Bogie box unloading device and system

Abstract

The application relates to a shaft-holding box dismounting device and system, and belongs to the technical field of shaft-holding box dismounting equipment. The application provides a shaft-holding box dismounting device, which comprises a connecting piece, a limiting piece and two fixing pieces, the two fixing pieces are arranged on the connecting piece, a through hole is arranged on the fixing piece, a containing cavity is surrounded between the two fixing pieces and the connecting piece, the containing cavity is used for containing part of the shaft-holding box, the fixing piece is used for abutting against the abutting arm of a driving device, the limiting piece is inserted into the through hole and is detachably connected with the shaft-holding box. The two limiting pieces are used for stably connecting the dismounting device and the shaft-holding box, so that the shaft-holding box is subjected to the axial force generated by an oil press, the shaft-holding bearing seat no longer bears the torque during dismounting, and the shaft-holding bearing seat is prevented from being deformed due to excessive force.

Description

Technical Field

[0001] This application relates to the technical field of axle box disassembly and assembly equipment, and in particular to an axle box unloading device and system. Background Technology

[0002] The axle box, a key component of the locomotive's running gear, houses bearings through which the axle is connected. The axle box provides stable support for the axle, ensuring its accurate positioning during operation and maintaining the correct relative position between the wheels and the track, thus guaranteeing smooth locomotive movement. Because the axle and bearings are connected by an interference fit, disassembling the axle box is a crucial step during locomotive overhauls. Specialized equipment is required to separate the axle box from the axle, ensuring the smooth progress of subsequent maintenance and repair work.

[0003] The existing tooling for disassembling the axle box involves placing the tooling at the notch plane of the axle box, using the bearing seat at one end of the axle box as the force-bearing part, making it contact the tooling, and then performing the disassembly operation on a hydraulic press.

[0004] However, the tooling needs to be in direct contact with the bearing housing to remove the bearing housing, and the bearing housing will bear the entire torque during the removal process, which poses a risk of deformation. Utility Model Content

[0005] This application provides a bearing housing unloading device. By setting unloading devices on both sides of the bearing housing, and using the unloading devices to abut against the hydraulic press, the force applied by the hydraulic press is applied to the bearing housing, thus avoiding the bearing housing from being deformed by force.

[0006] In a first aspect, this application provides a bushing box unloading device, comprising:

[0007] Connectors;

[0008] Two fixing members are provided on the connecting member. The fixing members are provided with through holes. The two fixing members and the connecting member form a receiving cavity. The receiving cavity is used to accommodate part of the bearing box. The fixing members are used to abut against the abutment arm of the drive device.

[0009] A limiting member is inserted into the through hole and is detachably connected to the bearing housing.

[0010] In this embodiment of the application, the connector is provided with a clearance groove, which communicates with the receiving cavity.

[0011] In this embodiment, the fixing member is further provided with an inclined surface, which is inclined in a direction away from the connecting member, and the inclined surface is used to guide the axle box into the receiving cavity.

[0012] In this embodiment of the application, the connector is provided with a weight reduction groove.

[0013] In this embodiment of the application, the side of the weight-reducing groove is connected to the side of the connector.

[0014] In this embodiment, the connector and the two fasteners are integrally formed.

[0015] In this embodiment of the application, the limiting member is a bolt for matching the screw hole on the bearing housing.

[0016] In this embodiment of the application, the fixing member is provided with a lifting member.

[0017] Secondly, embodiments of this application also provide a bushing box unloading system, including a drive device and a bushing box unloading device as described in the first aspect, wherein the bushing box unloading device is used to abut against an abutment arm on the drive device.

[0018] In this embodiment of the application, a limiting groove is provided on the abutment arm, and the axle box unloading device is engaged in the limiting groove to restrict the movement of the axle box unloading device.

[0019] This application provides a bearing housing retraction device, including a connector, a limiting member, and two fixing members. Both fixing members are mounted on the connector, and each fixing member has a through hole. The two fixing members and the connector form a receiving cavity for accommodating a portion of the bearing housing. The fixing members abut against the abutment arm of the drive device. The limiting member is inserted into the through hole and detachably connected to the bearing housing. By using the two limiting members to securely connect the retraction device to the bearing housing, the axial force generated by the hydraulic press acts on the bearing housing, preventing the bearing housing from bearing the torque during retraction and thus avoiding deformation due to excessive force. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 This is a sectional view of the axle box unloading device provided in this application;

[0022] Figure 2 This is a front view of the axle box unloading device provided in this application;

[0023] Figure 3 A schematic diagram of the working structure of the axle box unloading device provided in this application;

[0024] Figure 4A diagram showing the fit between the axle box, bearing housing, and axle provided in this application;

[0025] Figure 5 for Figure 3 A schematic diagram of the structure in which the unloading device of the central bearing box is engaged with the limiting groove.

[0026] Figure label:

[0027] 10-Axle housing; 11-Screw hole; 12-Axle; 13-Bearing seat; 20-Drive unit; 21-Abutment arm; 22-Limiting groove;

[0028] 100 - Connector; 110 - Clearance groove; 120 - Weight reduction groove;

[0029] 200 - Fastener; 210 - Through hole; 220 - Bevel; 230 - Lifting component; 240 - Lifting hole;

[0030] 300 - Reception cavity;

[0031] 400 - Limiting component.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0034] As a key component of the locomotive's running gear, the axle box is interference-fitted to the axle via rolling bearings, and its normal operation is crucial to the overall performance of the locomotive. During locomotive overhauls, the disassembly of the axle box is a core procedure, requiring the use of disassembly tools to separate the axle box from the axle, ensuring the smooth progress of subsequent maintenance and other work.

[0035] Existing unloading fixtures for axle housings require the fixture to be abutted against the bearing housing of the axle housing, and then the axle on the bearing housing is pushed by a drive device (such as a hydraulic press). At this time, the unloading fixture is fixed by the fixed end of the drive device. The unloading fixture will exert a force in opposite directions on the axle housing and the bearing housing to make the axle detach from the bearing housing. During the process of the axle detaching, the bearing housing may be deformed due to the force of the unloading fixture, which will affect subsequent use.

[0036] However, this existing tooling has many drawbacks. On the one hand, the tooling contacts the bearing housing to disassemble the bearing housing, which bears the entire torque during the disassembly process, posing a risk of deformation, which could lead to the scrapping of the bearing housing in severe cases. On the other hand, the tooling is subjected to bending stress, which can easily cause bending deformation after prolonged use, resulting in a short service life. In addition, to meet the strength requirements of the tooling, it is made of solid iron blocks, making it relatively bulky and inconvenient to use.

[0037] Considering the risk of deformation due to the existing tooling causing the bearing housing to bear the entire unloading torque, a novel connection and force-bearing mechanism is conceived. By setting suitable connection structures on both sides of the bearing housing, and using bolts and other connectors to securely connect the unloading tooling to the bearing housing, the axial force generated by the hydraulic press is transmitted through these connectors, preventing the bearing housing from bearing the torque during unloading. This avoids deformation of the bearing housing due to excessive force, ensuring the integrity of the bearing housing and the safety of the entire unloading process. The following will further explain this embodiment with reference to the accompanying drawings.

[0038] in, Figure 1 This is a cross-sectional view of the axle box unloading device provided in this application. Figure 2 This is a front view of the axle box unloading device provided in this application. Figure 3 This is a schematic diagram of the working structure of the axle box unloading device provided in this application. Figure 4 A diagram showing the fit between the axle box, bearing housing, and axle provided in this application. Figure 5 for Figure 3 A schematic diagram of the structure in which the unloading device of the central bearing box is engaged with the limiting groove.

[0039] Combination Figure 1 and Figure 2 As shown in the embodiment of this application, a bushing box unloading device is provided, including a connector 100, a limiting member 400, and two fixing members 200. Both fixing members 200 are disposed on the connector 100, and each fixing member 200 has a through hole 210. The two fixing members 200 and the connector 100 form a receiving cavity 300, which is used to receive a portion of the bushing box 10. The fixing members 200 abut against the abutting arm 21 of the driving device 20. The limiting member 400 is inserted into the through hole 210 and is detachably connected to the bushing box 10.

[0040] In this embodiment, the axle clamping box 10 is accommodated in the receiving cavity 300 formed by the connecting member 100 and the fixing member 200. The axle clamping box 10 is fixed to the device by the limiting member 400. The fixing member 200 is abutted against the abutting arm 21 of the driving device 20, and the axle 12 is driven by the driving member of the driving device 20, so that the axle 12 and the axle clamping box 10 move in opposite directions. This achieves stable unloading of the axle clamping box 10 and the axle 12, avoiding the defects of traditional tooling that rely on the bearing seat 13 for force. The structure is simple and the operation is convenient.

[0041] Among them, the connector 100 is an important component of the entire device, serving the functions of connection and support. Its shape and size are designed according to the actual application scenario and the specifications of the bearing box 10 to be adapted. It is usually made of high-strength metal materials (such as alloy steel) to ensure sufficient strength to withstand the various forces generated during the unloading process.

[0042] The connector 100 has a cuboid structure. Two fasteners 200 are symmetrically arranged on opposite sides of the connector 100, together with the connector 100 forming a receiving cavity 300. The shape of the receiving cavity 300 is adapted to the outer contour of the axle box 10 to be unloaded, and is used to wrap and position the axle box 10 during unloading.

[0043] Each fastener 200 is provided with a through hole 210, which is used to insert a limiting member 400. The diameter of the hole is designed to match the specifications of the limiting member 400 (such as a bolt) to ensure a tight and detachable connection.

[0044] In this embodiment of the application, the connector 100 is provided with a relief groove 110, which communicates with the receiving cavity 300.

[0045] The clearance groove 110 is connected to the receiving cavity 300. Its function is to provide clearance space for some protruding structures or related components on the axle box 10 during the installation and removal of the axle box 10, so as to prevent interference.

[0046] In this embodiment, the fastener 200 is also provided with an inclined surface 220, which is inclined in a direction away from the connector 100. The inclined surface 220 is used to guide the axle box 10 into the receiving cavity 300, making the operation smoother.

[0047] In other embodiments, the receiving cavity 300 may also be a groove formed by the inward recess of the connector 100 and the two fasteners 200.

[0048] The cavity 300 has a trapezoidal cross-section, allowing the axle clamp 10 to be placed inside and secured by a wedge-like shape formed by the trapezoidal cavity walls. Compared to conventional shapes with rectangular cross-sections, the two sloping sides of the trapezoid provide oblique support to the axle clamp 10, restricting its displacement from multiple directions. This effectively prevents the axle clamp 10 from swaying or shifting laterally due to axial forces or other external forces during unloading, further ensuring that the axle clamp 10 maintains a stable position within the device and providing a reliable prerequisite for successful unloading.

[0049] Furthermore, the trapezoidal opening shape typically provides guidance, allowing operators to more easily guide the axle holder 10 into the receiving cavity 300 by following the slope of the cavity wall, unlike rectangular cavities where precise alignment is required. This reduces installation difficulty and improves efficiency. Moreover, this shape allows the axle holder 10 to slide naturally into the appropriate position, facilitating quick and accurate positioning. This ensures that the connection points on the axle holder 10 corresponding to the fixing member 200 align more smoothly with the through holes 210 on the fixing member 200, simplifying subsequent connection and fixing operations.

[0050] In this embodiment of the application, a weight-reducing groove 120 is provided on the connector 100, and the side of the weight-reducing groove 120 is connected to the side of the connector 100.

[0051] The connector 100 is provided with a weight reduction groove 120, which is located on the side adjacent to the receiving cavity 300. For example, the weight reduction groove 120 can be designed as a rectangle, trapezoid, or other shapes. By hollowing out part of the material, the weight of the device is effectively reduced without affecting the overall structural strength, making it convenient for handling and operation.

[0052] In this embodiment, the connector 100 and the two fasteners 200 are integrally formed.

[0053] The connector 100 and the two fasteners 200 are manufactured using an integral molding process. This design makes the overall structure more stable and avoids the situation where the performance of the device is affected by loose connections.

[0054] In this embodiment, the limiting member 400 is a bolt for matching the screw hole 11 on the bearing housing 10.

[0055] The limiting component 400 uses bolts, and the bearing housing 10 has corresponding screw holes 11. The number of bolts is determined based on the actual stress and the need for a secure connection; correspondingly, multiple through holes 210 are also provided. During installation, the bolts pass sequentially through the through holes 210 on the fixing component 200 and then threadedly connect to the screw holes 11 on the bearing housing 10. Tightening the nuts achieves a tight fixation, thus reliably connecting the bearing housing 10 within the receiving cavity 300 of the device, ensuring that there will be no loosening or displacement between the bearing housing 10 and the device during disassembly.

[0056] In this embodiment of the application, multiple limiting members 400 are provided, multiple through holes 210 are provided, and multiple screw holes 11 are provided. The fixing member 200, the through holes 210 and the first screw hole 11 are connected in a one-to-one correspondence.

[0057] The number of through holes 210 can be 2-3, that is, two or three through holes 210 are provided on one connector 100, and the number of fasteners 200 and screw holes 11 is also the same.

[0058] In this embodiment, the fixing member 200 is provided with a lifting member 230, and the fixing member 200 is provided with a threaded lifting hole 240. The lifting member 230 is a lifting ring, and the bottom of the lifting ring is provided with a threaded portion that mates with the lifting hole 240. The lifting ring is fixed in the lifting hole 240 by the threaded engagement. The unloading device is installed onto the limiting groove 22 of the drive device 20 by the cooperation of the lifting ring and the lifting system.

[0059] Regarding the assembly of this device: First, the two fasteners 200 and the connector 100 are integrally formed, or the pre-fabricated fasteners 200 and connector 100 are assembled together by reliable welding, bolting, or other methods, ensuring a firm connection between the three to form an overall structural frame with a receiving cavity 300. Check the dimensional accuracy of each part and the quality of the connections to ensure they meet design requirements.

[0060] Next, according to the position and number of screw holes 11 on the axle box 10, multiple bolts are passed through the through holes 210 of the fixing component 200, and then screwed into the corresponding screw holes 11 on the axle box 10. Using appropriate tools, the nuts are gradually tightened to secure the axle box 10 firmly within the receiving cavity 300. During tightening, care must be taken to ensure that the tightening degree of each bolt is uniform to avoid problems such as uneven installation of the axle box 10 due to uneven force. Then, the fixing component 200 is clamped into the limiting groove 22 of the corresponding abutment arm 21 of the hydraulic press using the hoisting system.

[0061] like Figure 3 and Figure 4 As shown in the figure, the disassembly process of the bearing box unloading device mentioned in this embodiment is as follows:

[0062] After the assembly of the above-mentioned device and its connection with the bearing housing 10 and the drive device 20 are completed, start the drive device 20 (for example, start the hydraulic press so that its piston begins to move and generate axial force).

[0063] The axial force generated by the drive component of the drive unit 20 is transmitted to the axle 12. Since the fixing component 200 and the limiting component 400 are a solidly connected integral structure, and the axle box 10 is firmly fixed in the receiving cavity 300 by the fixing component 200, the abutting arm 21 of the hydraulic press will give the unloading device a reverse force, so that the axle 12 and the axle box 10 are subjected to forces in opposite directions. The axle 12 begins to move relative to the axle box 10 along the preset direction (usually axial), and gradually realizes the unloading operation between the axle box 10 and the axle 12.

[0064] During the unloading process, the clearance groove 110 and its inclined surface 220 structure ensure that the relevant components on the bearing housing 10 can pass smoothly without interfering with the fixing part 200, thus ensuring the smooth progress of the entire unloading process. At the same time, the weight reduction groove 120 on the connecting part 100 does not affect the overall stress performance of the device, and the design of the weight reduction groove 120 can reduce the overall weight of the device, making the operation process both stable and relatively easy.

[0065] After the axle box 10 is completely removed from the axle 12, in the reverse order, first remove the fixing part 200 from the limiting groove 22, then remove the limiting part 400, and remove the axle box 10 from the receiving cavity 300 of the device to complete the unloading operation of the entire axle box 10.

[0066] In combination Figure 3 and Figure 5 As shown, this application embodiment also provides a bearing box unloading system, including a drive device 20 and a bearing box unloading device, the bearing box unloading device being used to abut against the abutment arm 21 on the drive device 20.

[0067] In this embodiment of the application, a limiting groove 22 is provided on the abutment arm 21, and the bearing box unloading device is engaged in the limiting groove 22 to restrict the movement of the bearing box unloading device.

[0068] It should be noted that the embodiments referred to in the specification, such as "one embodiment," "embodiment," "exemplary embodiment," and "some embodiments," may include specific features, structures, or characteristics, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0069] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "one" or "" can also be understood to convey either singular or plural usage.

[0070] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0071] Furthermore, for ease of explanation, spatial relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotational degrees or in other orientations), and the spatial relative descriptive terms used herein may be interpreted accordingly.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A device for unloading a bearing box, characterized in that, include: Connector (100); Two fasteners (200) are provided on the connector (100). Each fastener (200) has a through hole (210). The two fasteners (200) and the connector (100) form a receiving cavity (300). The receiving cavity (300) is used to receive part of the bearing housing (10). The fasteners (200) are used to abut against the abutting arm (21) of the drive device (20). A limiting member (400) is inserted into the through hole (210) and is detachably connected to the bearing box (10).

2. The axle box unloading device according to claim 1, characterized in that, The connector (100) is provided with a clearance groove (110), which is in communication with the receiving cavity (300).

3. The axle box unloading device according to claim 2, characterized in that, The fastener (200) is also provided with a ramp (220), which is inclined away from the connector (100) and is used to guide the axle box (10) into the receiving cavity (300).

4. The axle box unloading device according to any one of claims 1-3, characterized in that, The connector (100) is provided with a weight reduction groove (120).

5. The axle box unloading device according to claim 4, characterized in that, The side of the weight reduction groove (120) is connected to the side of the connector (100).

6. The axle box unloading device according to any one of claims 1-3, characterized in that, The connector (100) and the two fasteners (200) are integrally formed.

7. The axle box unloading device according to any one of claims 1-3, characterized in that, The limiting member (400) is a bolt used to match the screw hole (11) on the bearing box (10).

8. The axle box unloading device according to any one of claims 1-3, characterized in that, The fastener (200) is provided with a lifting component (230).

9. A system for unloading and removing axle-holding boxes, characterized in that, Includes a drive unit (20) and a bearing box retraction device as described in any one of claims 1-8, the bearing box retraction device being used to abut against an abutment arm (21) on the drive unit (20).

10. The axle box unloading system according to claim 9, characterized in that, The abutment arm (21) is provided with a limiting groove (22), and the axle box unloading device is engaged in the limiting groove (22) to restrict the movement of the axle box unloading device.

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