A modular polyurethane wheel set

Abstract

The utility model discloses a combined polyurethane wheel set, including mandrel and wheel tile module, the outer edge of mandrel is provided with a plurality of wheel tile module, every wheel tile module is along the axial setting of mandrel respectively, every wheel tile module is connected with mandrel through first screw respectively. In the utility model, the wheel tile module includes the connecting plate, the steel tile and the polyurethane layer, and is connected through the screw between the connecting plate and the steel tile, and is also connected through the screw between the connecting plate and the mandrel, so when the polyurethane layer and the steel tile bonding failure in any wheel tile module in the tunneling process, it is easy to dismantle and replace in time.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane wheel technology, and in particular to a combined polyurethane wheel assembly. Background Technology

[0002] Polyurethane wheel assemblies on tunnel boring machines (TBMs) are typically manufactured by press-fitting wheel sections with cylindrical steel mandrels using an interference fit. The wheel sections are made by casting polyurethane material onto the surface of a steel rim. The manufacturing process involves: sandblasting the steel rim, cleaning it with an organic solvent, coating the surface with adhesive, preheating the rim in an oven to activate the adhesive, placing the rim in a heated mold (with a release agent applied to the mold cavity), and then casting the polyurethane. Due to the large diameter and heavy weight of the steel rim, wheel production is usually done manually. The steel rim is easily contaminated during handling and transfer between multiple processes. Manual application of adhesive makes it difficult to ensure uniform adhesive film thickness, and uneven temperature distribution can occur during preheating of the adhesive-coated rim. Therefore, during use, polyurethane wheel assemblies frequently experience localized adhesion failure between the polyurethane layer and the steel rim, leading to the polyurethane layer peeling off the rim surface.

[0003] In actual operation, it is common for the polyurethane layer of the wheel to be punctured by bolts and other foreign objects on the tunnel concrete segments. If the punctured wheel is not replaced in time, the damage will be aggravated. During the tunnel excavation process of the shield machine, the wheel assembly is difficult to disassemble and the damaged wheel is difficult to replace in time. Therefore, the wheel with local bonding failure will eventually cause the entire polyurethane layer to fall off and break, causing the steel ring to press directly on the surface of the concrete segment and damage the segment. Utility Model Content

[0004] The purpose of this invention is to provide a combined polyurethane wheel assembly to solve the above-mentioned technical problems.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A composite polyurethane wheel assembly includes a spindle and wheel bearing modules. A plurality of wheel bearing modules are disposed on the outer edge of the spindle. Each wheel bearing module is disposed along the axial direction of the spindle and is connected to the spindle by a first screw.

[0007] Preferably, each of the wheel bearing modules includes two connecting plates and several steel bearings. The steel bearings have an arc-shaped structure. The two connecting plates are disposed on the inner side of the several steel bearings. Each steel bearing is connected to the two connecting plates by a second screw. The connecting plates are connected to the spindle by a first screw.

[0008] As a further preferred embodiment, the steel tiles are arranged independently, and two adjacent steel tiles are in contact with each other.

[0009] As a further preferred option, each of the steel tiles has a polyurethane layer cast onto its outer wall.

[0010] As a further preferred embodiment, the outer peripheral wall of the mandrel is provided with a plurality of mounting grooves, and each of the connecting plates is respectively disposed in one of the mounting grooves.

[0011] As a further preferred embodiment, the bottom wall of the mounting groove is provided with a threaded hole that mates with the first screw.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In this utility model, the wheel bearing module includes a connecting plate, a steel tile, and a polyurethane layer. The connecting plate and the steel tile are connected by screws, and the connecting plate and the mandrel are also connected by screws. In this way, if the polyurethane layer fails to bond with the steel tile in any wheel bearing module during tunnel excavation, it can be easily disassembled and replaced in a timely manner. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the combined polyurethane wheel assembly in this utility model;

[0015] Figure 2 This is a front view of the combined polyurethane wheel assembly in this utility model;

[0016] Figure 3 This is a side view of the combined polyurethane wheel assembly in this utility model;

[0017] Figure 4 This is a schematic diagram of the mandrel structure in this utility model;

[0018] Figure 5 This is a schematic diagram of the structure of the steel tile and the polyurethane layer in this utility model;

[0019] Figure 6 This is a structural schematic diagram of the wheel bearing module in this utility model.

[0020] In the diagram: 1. Mandrel; 101. Mounting groove; 102. Threaded hole; 2. Wheel bearing module; 201. Connecting plate; 202. Steel bearing; 203. Polyurethane layer; 3. First screw; 4. Second screw. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1 to 6 The diagram illustrates a preferred embodiment of a combined polyurethane wheel assembly, comprising a spindle 1 and wheel bearing modules 2. A plurality of wheel bearing modules 2 are disposed on the outer edge of the spindle 1, each wheel bearing module 2 being arranged along the axial direction of the spindle 1. Each wheel bearing module 2 is connected to the spindle 1 by a first screw 3. In this embodiment, see [reference needed]. Figure 1 As shown, there are four wheel bearing modules 2 in total. The four wheel bearing modules 2 form a ring structure and are located on the outer edge of the mandrel 1. The side walls of the steel bearings 202 between two adjacent wheel bearing modules 2 are in contact with each other. The wheel bearing modules 2 are connected to the mandrel 1 by the first screw 3, which facilitates the quick disassembly and replacement of the wheel bearing modules 2.

[0025] Furthermore, as a preferred embodiment, each wheel tile module 2 includes two connecting plates 201 and several steel tiles 202. The steel tiles 202 have an arc-shaped structure. The two connecting plates 201 are disposed on the inner side of the steel tiles 202. Each steel tile 202 is connected to the two connecting plates 201 by a second screw 4. The connecting plates 201 are connected to the mandrel 1 by a first screw 3. A polyurethane layer 203 is cast and molded on the outer wall of each steel tile 202. The steel tiles 202 are independently arranged, and two adjacent steel tiles 202 are in contact with each other. The steel tiles 202 are connected to the connecting plates 201 by the second screw 4, which facilitates the disassembly of the steel tiles 202. When the polyurethane layer 203 in a wheel tile module 2 is worn or damaged, the corresponding connecting plate 201 can be removed from the mandrel 1, and then the corresponding steel tile 202 can be removed and replaced, achieving a quick replacement effect.

[0026] Furthermore, as a preferred embodiment, a plurality of mounting grooves 101 are formed on the outer peripheral wall of the mandrel 1, and each connecting plate 201 is respectively disposed in a mounting groove 101. The plurality of mounting grooves 101 are distributed along the circumference of the mandrel 1, and each mounting groove 101 extends along the axial direction of the mandrel 1. A threaded hole 102 for cooperating with the first screw 3 is formed on the bottom wall of the mounting groove 101. After the connecting plate 201 is embedded into the mounting groove 101, the connecting plate 201 is then connected and fixed to the mandrel 1 by the first screw 3.

[0027] During installation, several steel tiles 202 with polyurethane layer 203 are connected to two connecting plates 201 by the second screw 4. Then, the connecting plates 201 are embedded into the mounting groove 101, and the connecting plates 201 are connected to the mandrel 1 by the first screw 3.

[0028] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A composite polyurethane wheel assembly, characterized in that, It includes a mandrel and wheel bearing modules. The outer edge of the mandrel is provided with a plurality of wheel bearing modules. Each wheel bearing module is arranged along the axial direction of the mandrel and is connected to the mandrel by a first screw.

2. The combined polyurethane wheel assembly as described in claim 1, characterized in that, Each of the wheel bearing modules includes two connecting plates and several steel bearings. The steel bearings have an arc-shaped structure. The two connecting plates are disposed on the inner side of the several steel bearings. Each steel bearing is connected to the two connecting plates by a second screw. The connecting plates are connected to the spindle by a first screw.

3. The combined polyurethane wheel assembly as described in claim 2, characterized in that, The steel tiles are independently arranged, and two adjacent steel tiles are in contact with each other.

4. The combined polyurethane wheel assembly as described in claim 2, characterized in that, Each of the steel tiles has a polyurethane layer cast onto its outer wall.

5. The combined polyurethane wheel assembly as described in claim 2, characterized in that, The outer peripheral wall of the mandrel is provided with several mounting grooves, and each of the connecting plates is respectively disposed in one of the mounting grooves.

6. The combined polyurethane wheel assembly as described in claim 5, characterized in that, The bottom wall of the mounting groove is provided with a threaded hole that mates with the first screw.

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