CN2763098Y - Composite wheel for mine use drafter - Google Patents

Abstract

The composite wheel of the mining traction locomotive of the utility model is most suitable for the transportation locomotive in the underground of the mine. Composite wheel split structure with polymer or polymer-based tire and steel wheel core, the composite tire and the conical surface of the steel wheel core are fitted together, the steel wheel rim is overhanging with a shoulder for positioning the tire, and There is a positioning plate for pressing the tire, and the transition part of the wheel body adopts a large-curvature fillet transition, which not only reduces the stress concentration at the sudden change in the size of the wheel core, but also improves the bending strength of the root of the wheel flange, and increases the strength of the composite tire. The reliability and maintainability of the connection with the steel wheel core, the wheel-rail adhesion coefficient is large and the wheel strength is high, the installation is convenient, time-saving and labor-saving; the disassembly is good, the steel wheel core can be reused, and has a wide range of practicability.

Description

Composite wheel for mine traction locomotive

Technical field

The utility model relates to a composite wheel of a traction locomotive used in mines, and is especially suitable for transport locomotives underground in mines, and is also suitable for wheels that need to increase the braking force of the locomotive.

Background technique

Mining locomotives are the main transportation equipment in coal mines, and they are responsible for the transportation of raw coal, gangue, materials and personnel. When the mining locomotive is running, it mainly relies on the friction between the wheels and the track surface to make the locomotive run on the track. Therefore, the traction force of the locomotive is not only limited by the power of the traction motor (or internal combustion engine), but also by the friction between the wheels and the track surface. Most of the locomotive wheels currently in use are integral structures made of chilled cast iron and vanadium-titanium cast iron. Due to the harsh underground transportation conditions, large coal dust, and a lot of water, the friction coefficient between the traction locomotive and the track is low, making the transportation of mining locomotives difficult. Capabilities are limited. Under normal circumstances, the adhesion (friction) coefficient of the locomotive is only about 0.1 when no sand is sprinkled. If there is coal slime and sewage on the track, the friction coefficient between the wheel and rail is even lower. Because the traction force of the locomotive is proportional to the adhesion coefficient between the wheel and rail, the low adhesion coefficient limits the transportation capacity and climbing ability of the locomotive.

The rubber wheeled locomotive is a new type of underground transportation equipment developed in recent years. Compared with steel-wheeled locomotives, rubber-sheathed-wheeled locomotives have obvious advantages of large traction, strong climbing ability, and high speed. Rubber sheathed wheels are the key components of this type of locomotive, and their performance directly affects the transportation efficiency of the locomotive. Since the first rubber-sheathed electric locomotive was successfully developed in my country in the early 1990s, due to the short service life, high price and low reliability of the rubber-sheathed wheels, the promotion and use of this type of locomotive in the production site has been limited. And users are eager to improve the life of the rubber sleeve wheel and reduce the cost of the product. At present, the rubber-sleeved wheels used on locomotives mainly use bonding or interference suits to fix the rubber tires on the outside of the steel wheels. The structural form is not only inconvenient for installation and maintenance, but also easily causes the rubber sleeves to fall off during use, and the rubber sleeves are separated from the steel wheels. There are problems such as slipping between the steel wheel and the brake drum, and due to the installation requirements of the rubber tire, the overhang of the wheel rim becomes longer, which deteriorates the stress state of the wheel rim, and it is easy to cause the wheel rim to break when the train is running at high speed and turning , bringing hidden dangers to train operation. In addition, when the bonded rubber-sleeved wheel is damaged, the steel tire must be removed when replacing it, which not only wastes steel, but also increases the cost. Therefore, improving the structural form of the rubber-sleeved wheels and improving the reliability and service life of the wheelset has important practical significance for maintaining the normal operation of the locomotive, ensuring the turnover capacity of mine transportation, and reducing production costs.

Contents of Invention

In view of the existing problems in the prior art, the purpose of the utility model is to provide a composite wheel for mining traction locomotives with simple structure, good running effect, long service life, and convenient installation and maintenance.

The composite wheel of the mining traction locomotive of the utility model has a composite wheel split structure of a polymer or polymer-based composite material tire and a steel wheel core. There is an interference fit between the conical surfaces. One end of the rim of the steel wheel core is suspended with a shoulder for positioning the tyre. The rim and the wheel body have a large curvature fillet transition. The positioning plate and the steel wheel core are provided with locking bolts to prevent tangential misalignment of the tire.

The composite wheel of the mining traction locomotive of the utility model, the polymer or the polymer-based composite material used in the tire can be a nylon-based composite material, polyurethane material, or rubber. The positioning plate is provided with a spigot, and the gap fits between the spigot and the steel wheel core guide surface, and the described positioning plate is provided with a pressing device for expanding the composite tire on the outer cone surface of the steel wheel core. bolt.

The composite wheel of the mining traction locomotive of the utility model has the following advantages:

1) A new connection structure between the tire and the wheel core is adopted to increase the reliability and maintainability of the connection between the tire and the steel wheel core;

2) The tire and the steel wheel core are designed separately to give full play to the combined functional advantages of the tribological properties of the polymer or polymer-based composite material tire and the strength and reliability of the steel wheel core. The wheel-rail adhesion coefficient is large and the wheel strength is high. Improve the friction coefficient between the wheel and rail;

3) The transition part of the wheel body adopts a large curvature fillet transition, which reduces the stress concentration at the sudden change in the size of the wheel core and improves the bending strength of the root of the wheel rim;

4) The composite wheel adopts a split-set structure, which is easy to install and saves time and effort;

5) The wheel hoop is manufactured in a fixed shape, with good detachability, and the steel wheel core can be reused.

Description of drawings

The accompanying drawing is a structural view of the compound wheel of the mine traction locomotive of the utility model.

In the figure: 1——wheel tire 2——pressing bolt 3——steel wheel core 4——locating disc 5——locking bolt

Detailed ways

An embodiment of the utility model will be further described below in conjunction with accompanying drawing:

The composite wheel of the mining traction locomotive of the utility model is composed of a polymer or polymer-based composite tire 1, a steel wheel core 3, a positioning plate 4, a pressing bolt 2 and a locking bolt 5. The tire 1 is inlaid on the outer edge of the steel wheel core 3, and the conical surface interference fit between the tire 1 and the steel wheel core 3 forms a composite wheel in which the tread surface and the steel wheel core 3 are combined. The steel wheel core 3 wheels A shoulder for positioning the tire 1 hangs from one end of the rim, and the rim and the wheel body have a large curvature fillet transition. The other end surface of the steel wheel core 3 is provided with a positioning disc 4 for pressing the tire 1. There is a spigot, and there is a clearance fit between the spigot and the guide surface of the steel wheel core 3; the positioning plate 4 is equipped with a compression bolt 2, and when the compression bolt 2 is screwed in, the positioning plate 4 compresses the tire 1 so that the tire 1. Expand and tighten the outer cone surface of the steel wheel core 3; the overhanging part of the steel wheel rim is equipped with locking bolts 5, and the locking bolts 5 position the wheel rim 1 to prevent the tangential movement of the wheel rim 1. The wheel rim is made of polymer or polymer The object-based composite material can be nylon-based composite material, polyurethane material, or rubber.

When the tire 1 is worn and replaced, the positioning plate 4 is removed, and the tire is pushed back from the locking bolt hole to remove the tire 1. The steel wheel core 3 can be made of existing steel wheel materials, the wheel rim 1 is made of polymer or polymer-based composite materials, the overhanging part of the steel wheel rim is designed with equal strength theory, and the transition part with the wheel body adopts a large curvature fillet transition , can reduce the stress concentration at the sudden change in the size of the wheel core, and improve the bending strength of the root of the wheel rim. When the traction locomotive starts, the axle drives the composite wheel to rotate, and the high friction coefficient between the tire and the rail improves the traction adhesion coefficient of the locomotive, thereby improving the traction capacity. When the locomotive brakes, the brake shoe acts on the tread of the tire to form a braking torque, so that the compound wheel fixed together with it bears the reverse torque. When braking, the high friction coefficient between the tire and the rail increases the braking capacity of the locomotive and shortens the braking safety distance of the traction locomotive.

For the existing mining electric locomotive, it only needs to carry out corresponding transformation on its wheel set, and it can be refitted to the composite wheel in the cost technology, because the friction coefficient between the tire and the rail of the polymer or polymer-based composite material is much higher It is much larger than the friction coefficient between the steel wheel and the rail, so the traction force and braking force of the locomotive will increase accordingly when the locomotive is running, thereby improving the transportation capacity and climbing ability of the mining locomotive.

Claims (5)

1. mining hauling engine compound vehicle wheel, it is characterized in that: with the compound vehicle wheel split-type structural of poly-mer or polymer matrix composite rim (1) and steel core wheel (3), rim (1) cooperates suit with steel wheel core (3) circular conical surface, conical surface interference fit between rim (1) and the steel wheel core (3), the overhang shoulder of stationary tire (1) of steel wheel core (3) wheel rim one end, wheel rim and wheel body are the deep camber round-corner transition, and steel wheel core (3) other end is provided with the dowel disc (4) that compresses rim (1).

2. mining hauling engine compound vehicle wheel according to claim 1 is characterized in that: the poly-mer of described rim (1) or polymer matrix composite can be nylon based composites, also can be polyurethane materials, can also be rubber.

3. mining hauling engine compound vehicle wheel according to claim 1 is characterized in that: described dowel disc (4) is provided with seam, is free-running fit between seam and steel wheel core (3) spigot surface.

4. mining hauling engine compound vehicle wheel according to claim 1 and 2 is characterized in that: described dowel disc (4) is provided with the push bolt (2) of rim (1) swelling on steel wheel core (3) male cone (strobilus masculinus).

5. mining hauling engine compound vehicle wheel according to claim 1 is characterized in that: described steel wheel core (3) is provided with the lock(ing) bolt (5) that prevents the tangential changing of the relative positions of rim.

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