Product Description

1.Feature and advantage:

Theme Park  Mini Track Train/ Locomotive with 120 Seats  

Manufacturer for Amusement Rides Mini Diesel  Track Train with High quality & conpetitive price you. Customer is welcome to visit our new showroom and factory located in HangZhou City, China. 

2.Specifications

DST01-7C-120G Transparent-type Sightseeing Mini Train

Gauge: 762/900/1435mm
Marshalling:  locomotive +coal water truck  + carriage*3
Speed: 10km/h
Crew: 40 *3=120
Mat limit slope: 30 per thousand
Restriction curve radius: 30m 
Power: diesel generating set (Cummins) 

2.1 Ambient conditions and vehicle parameters

1) Project location height is not more than 2000 meters above sea level.
2) The air temperature is between -10 and 40 degree.
3) Electronic components must not be activated without dehumidification in relative humidity greater than 95% or condensation.
4) Vehicles should be CZPT to withstand the invasion of wind and sand and the resistance to salt spray
5) Line gauge: 762mm
6) Limiting slope: 30 ‰ (reduction calculations for curves)
7) The radius of the line longitudinal curve is 200m
8) Line minimum curve radius 40m, difficult area 30m
   

              
2.2 Vehicle parameters

1) Style: European classical (see attachment renderings)
2) Gauge: 762mm
3) Formation mode: locomotive + coal water truck + compartment + compartment + compartment + compartment
4) Group size 38.2m (length) x 1.9m (width) x 2.8m (height)
5) Passenger Capacity: 120 seats
6) Limit curve radius: 40m, difficult section (station) 30m
7) Limit slope: <= 30‰, curve section needs to perform this calculation
8) Speed: 0-10km/H
9) Emergency braking distance: <4m
10) Xihu (West Lake) Dis.d tour system: The host is located on the bridge of the locomotive, the audio is located in each compartment, playing background music, site broadcast, temporary voice notification
11) Overall dimensions mm: 10170 (length) * 2000 (width) * 2830 (high)
12) Driver’s seat: seated 2 seats
13) Structure: Q235 profile, steel plate welding
14) Locomotive axis sequence: 2-2-0
15) Drive system:
16) Coal Waterwheels: Power Bogies
17) Drive Motor : 7.5KW*4 Variable Frequency Motor
18) Speed control method: frequency conversion speed control touch screen + plc + inverter S curve acceleration vector control 19) Main power source: CZPT diesel generator set 80kw, Stanford generator
20) Braking system: Working brake: Regenerative braking (motor fed brake) Emergency, parking brake: Electropneumatic braking
21) Forward driving video (improving driver’s view)
22) EffectSmokestack effect of continuous smoke \steam whistle\copper bell (12 inches)
23) Overall dimensions mm: 6.2 (L) * 1900 (W) * 2800 (H)
24) Cabin form: semi-open type, on both sides of the car, with car steps
25) Minimum height of passenger area: 1800mm
26) Floor height: 600mm (rail surface)
27) Step height: 400mm (rail surface)
28) Structure: Q235 profile, sheet metal welding, roof FRP composite
29) Running system: Bogie form (with automatic emergency braking)
30) Renovation: Roof interior wallsolid wood buckle + wood paint (6 degrees) Floor: bamboo plastic plate + pattern aluminum
31) Seats: 32 seats (wooden seats) Lamps: Antique LED Ceiling Lights Sound: Wood Effect Ceiling Speakers
32) Car side railing: solid wood (weathering wood oil 6 degrees)
33) Side door: 8 sided, FRP CZPT (inside solid wood) End window: Solid wood pHangZhou window
34) Urveillance: Camera (recording) 2pcs/car
35) European metal corner flower on the roof: 16 handrails on and off: 304 stainless steel
36) Weather curtain: transparent shutter (removable, fast retractable)

2.3 Company profile

HangZhou dising technologies Co., Ltd.Is located in the east lake new technology development zone in HangZhou, ZheJiang province.It is a professional supplier of tourist attraction, theme park, characteristic town, and commercial block slow rail transit system;Our service covers the whole process of slow rail transit system survey and design, special track vehicle design and so on.
We promise to improve our professional skills and be based on a careful design attitude, a profound understanding of customer needs and a rich experience in project implementation, to provide customers with high quality and reliable products and economic and reasonable projects.

2.4 Products Series

In the years of industry experience, the company created the ZheJiang tenyun steam locomotive replica plate, the Tianya  corner scenic spot in ZheJiang , the HangZhou Yuet square project, the tram, the ZheJiang lling National Agricultural Park sightseeing train, the Xihu (West Lake) Dis. Lu Jia Village sightseeing small train and so on. The main products covers 3 kinds of landscapes:tourism. Sightseeing trains, sightseeing trams and locomotives 3 kinds of landscapes.

1. Electric Train Sets
2. Electric Locomotive
3. Fun Train
4. Sightseeing Mini Train
5. Tram

2.5 Delivery and Shipment

Shipping by sea: Around 4 weeks to arrive.
Delivery Time: Around 30 working days after receipt of deposit.
MOQ: 1 set.
Payment Term:  30% T/T deposit, 70% T/T before delivery.

2.6 Warranty and post service 

Mini Electric Trackless Train for Tourist: 1 year full warranty,offer FREE components under EXW shipped term.
oversea engineer aftre sale service available

2.7 FAQ

Q1. What is your terms of packing?

A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.

Q2. What is your terms of payment?

A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.

Q3. What is your terms of delivery?

A: EXW, FOB, CFR, CIF, DDU.

Q4. How about your delivery time?

A: Generally, it will take 30 to 60 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.

Q5. Can you produce according to the samples?

A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?

A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.

Q7. Do you test all your goods before delivery?

A: Yes, we have 100% test before delivery

Q8: How do you make our business long-term and good relationship?

A:1. We keep good quality and competitive price to ensure our customers benefit ;

2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from.

How to Calculate the Diameter of a Worm Gear

In this article, we will discuss the characteristics of the Duplex, Single-throated, and Undercut worm gears and the analysis of worm shaft deflection. Besides that, we will explore how the diameter of a worm gear is calculated. If you have any doubt about the function of a worm gear, you can refer to the table below. Also, keep in mind that a worm gear has several important parameters which determine its working.

Duplex worm gear

A duplex worm gear set is distinguished by its ability to maintain precise angles and high gear ratios. The backlash of the gearing can be readjusted several times. The axial position of the worm shaft can be determined by adjusting screws on the housing cover. This feature allows for low backlash engagement of the worm tooth pitch with the worm gear. This feature is especially beneficial when backlash is a critical factor when selecting gears.
The standard worm gear shaft requires less lubrication than its dual counterpart. Worm gears are difficult to lubricate because they are sliding rather than rotating. They also have fewer moving parts and fewer points of failure. The disadvantage of a worm gear is that you cannot reverse the direction of power due to friction between the worm and the wheel. Because of this, they are best used in machines that operate at low speeds.
Worm wheels have teeth that form a helix. This helix produces axial thrust forces, depending on the hand of the helix and the direction of rotation. To handle these forces, the worms should be mounted securely using dowel pins, step shafts, and dowel pins. To prevent the worm from shifting, the worm wheel axis must be aligned with the center of the worm wheel’s face width.
The backlash of the CZPT duplex worm gear is adjustable. By shifting the worm axially, the section of the worm with the desired tooth thickness is in contact with the wheel. As a result, the backlash is adjustable. Worm gears are an excellent choice for rotary tables, high-precision reversing applications, and ultra-low-backlash gearboxes. Axial shift backlash is a major advantage of duplex worm gears, and this feature translates into a simple and fast assembly process.
When choosing a gear set, the size and lubrication process will be crucial. If you’re not careful, you might end up with a damaged gear or 1 with improper backlash. Luckily, there are some simple ways to maintain the proper tooth contact and backlash of your worm gears, ensuring long-term reliability and performance. As with any gear set, proper lubrication will ensure your worm gears last for years to come.

Single-throated worm gear

Worm gears mesh by sliding and rolling motions, but sliding contact dominates at high reduction ratios. Worm gears’ efficiency is limited by the friction and heat generated during sliding, so lubrication is necessary to maintain optimal efficiency. The worm and gear are usually made of dissimilar metals, such as phosphor-bronze or hardened steel. MC nylon, a synthetic engineering plastic, is often used for the shaft.
Worm gears are highly efficient in transmission of power and are adaptable to various types of machinery and devices. Their low output speed and high torque make them a popular choice for power transmission. A single-throated worm gear is easy to assemble and lock. A double-throated worm gear requires 2 shafts, 1 for each worm gear. Both styles are efficient in high-torque applications.
Worm gears are widely used in power transmission applications because of their low speed and compact design. A numerical model was developed to calculate the quasi-static load sharing between gears and mating surfaces. The influence coefficient method allows fast computing of the deformation of the gear surface and local contact of the mating surfaces. The resultant analysis shows that a single-throated worm gear can reduce the amount of energy required to drive an electric motor.
In addition to the wear caused by friction, a worm wheel can experience additional wear. Because the worm wheel is softer than the worm, most of the wear occurs on the wheel. In fact, the number of teeth on a worm wheel should not match its thread count. A single-throated worm gear shaft can increase the efficiency of a machine by as much as 35%. In addition, it can lower the cost of running.
A worm gear is used when the diametrical pitch of the worm wheel and worm gear are the same. If the diametrical pitch of both gears is the same, the 2 worms will mesh properly. In addition, the worm wheel and worm will be attached to each other with a set screw. This screw is inserted into the hub and then secured with a locknut.

Undercut worm gear

Undercut worm gears have a cylindrical shaft, and their teeth are shaped in an evolution-like pattern. Worms are made of a hardened cemented metal, 16MnCr5. The number of gear teeth is determined by the pressure angle at the zero gearing correction. The teeth are convex in normal and centre-line sections. The diameter of the worm is determined by the worm’s tangential profile, d1. Undercut worm gears are used when the number of teeth in the cylinder is large, and when the shaft is rigid enough to resist excessive load.
The center-line distance of the worm gears is the distance from the worm centre to the outer diameter. This distance affects the worm’s deflection and its safety. Enter a specific value for the bearing distance. Then, the software proposes a range of suitable solutions based on the number of teeth and the module. The table of solutions contains various options, and the selected variant is transferred to the main calculation.
A pressure-angle-angle-compensated worm can be manufactured using single-pointed lathe tools or end mills. The worm’s diameter and depth are influenced by the cutter used. In addition, the diameter of the grinding wheel determines the profile of the worm. If the worm is cut too deep, it will result in undercutting. Despite the undercutting risk, the design of worm gearing is flexible and allows considerable freedom.
The reduction ratio of a worm gear is massive. With only a little effort, the worm gear can significantly reduce speed and torque. In contrast, conventional gear sets need to make multiple reductions to get the same reduction level. Worm gears also have several disadvantages. Worm gears can’t reverse the direction of power because the friction between the worm and the wheel makes this impossible. The worm gear can’t reverse the direction of power, but the worm moves from 1 direction to another.
The process of undercutting is closely related to the profile of the worm. The worm’s profile will vary depending on the worm diameter, lead angle, and grinding wheel diameter. The worm’s profile will change if the generating process has removed material from the tooth base. A small undercut reduces tooth strength and reduces contact. For smaller gears, a minimum of 14-1/2degPA gears should be used.

Analysis of worm shaft deflection

To analyze the worm shaft deflection, we first derived its maximum deflection value. The deflection is calculated using the Euler-Bernoulli method and Timoshenko shear deformation. Then, we calculated the moment of inertia and the area of the transverse section using CAD software. In our analysis, we used the results of the test to compare the resulting parameters with the theoretical ones.
We can use the resulting centre-line distance and worm gear tooth profiles to calculate the required worm deflection. Using these values, we can use the worm gear deflection analysis to ensure the correct bearing size and worm gear teeth. Once we have these values, we can transfer them to the main calculation. Then, we can calculate the worm deflection and its safety. Then, we enter the values into the appropriate tables, and the resulting solutions are automatically transferred into the main calculation. However, we have to keep in mind that the deflection value will not be considered safe if it is larger than the worm gear’s outer diameter.
We use a four-stage process for investigating worm shaft deflection. We first apply the finite element method to compute the deflection and compare the simulation results with the experimentally tested worm shafts. Finally, we perform parameter studies with 15 worm gear toothings without considering the shaft geometry. This step is the first of 4 stages of the investigation. Once we have calculated the deflection, we can use the simulation results to determine the parameters needed to optimize the design.
Using a calculation system to calculate worm shaft deflection, we can determine the efficiency of worm gears. There are several parameters to optimize gearing efficiency, including material and geometry, and lubricant. In addition, we can reduce the bearing losses, which are caused by bearing failures. We can also identify the supporting method for the worm shafts in the options menu. The theoretical section provides further information.