Axle press device

Abstract

The application relates to the technical field of rail vehicle assembly, in particular to an axle pressing device. The axle pressing device comprises a base, a pressing mechanism and an elastic adjusting assembly. The pressing mechanism is used for bearing and pressing an axle, and the elastic adjusting assembly is arranged between the base and the pressing mechanism. The elastic adjusting assembly can adjust the deviation force caused by the eccentric load of a gear box on the pressing mechanism. The axle pressing device adjusts the deviation force caused by the eccentric load of the gear box through the elastic adjusting assembly, avoids the deformation of a supporting mechanism caused by the deviation force of the eccentric load of the gear box on the pressing mechanism, is beneficial to prolonging the service life of the supporting mechanism, and does not need to frequently replace and maintain the supporting mechanism. Meanwhile, the elastic adjusting assembly can adapt to the deviation of the pressing force of the wheels pressed on both ends of the axle, avoids the difficulty in pressing the wheels caused by the slight eccentricity of the wheels and the axle, ensures the smooth pressing, avoids the damage to the axle in the wheel pressing process, and is beneficial to improving the success rate of the pressing process.

Description

Technical Field

[0001] This application relates to the field of rail vehicle assembly technology, and in particular to axle clamping devices. Background Technology

[0002] Gearbox wheelsets refer to the geared wheelsets commonly used in rail transit, such as those in subways, urban rail transit, high-power traction locomotives, and high-speed trains. The gearbox transmits power to the wheel-rail system, enabling rail transit operation. Therefore, the maintenance of gearbox wheelsets is of paramount importance for the safe operation of rail transit.

[0003] In related technologies, gearbox wheelsets include axles, gearboxes, and wheels. The gearbox has mounting holes through which the axle passes, and wheels are mounted to both ends of the axle while it is fixed. Currently, a commonly used structure for fixing the axle is an axle clamping device. The axle clamping device includes a support mechanism and a clamping mechanism. The support mechanism defines a bearing space for supporting the axle, and the clamping mechanism presses against the axle, thereby fixing the axle within the bearing space.

[0004] However, due to the excessive weight of the gearbox, the support mechanism is prone to deformation due to uneven pressure at different locations, resulting in a reduced service life. Simultaneously, slight misalignment between the wheels and axles leads to inconsistent pressing forces at both ends, hindering the pressing process and potentially damaging the axles. Utility Model Content

[0005] Therefore, it is necessary to provide an axle clamping device to address the problems of easy deformation of the support mechanism, reduced service life, and difficulty in wheel pressing.

[0006] An axle clamping device is used for a gearbox wheelset, the gearbox wheelset including a gearbox and an axle, the axle clamping device comprising:

[0007] Base;

[0008] A clamping mechanism is configured to carry and clamp the axle;

[0009] An elastic adjustment assembly is disposed between the base and the clamping mechanism, the elastic adjustment assembly being configured to adjust the biasing force caused by the gearbox's bias load on the clamping mechanism.

[0010] In one embodiment, the base is provided with a guide hole, and the elastic adjustment component includes:

[0011] A buffer element is disposed between the base and the clamping mechanism, with both ends of the buffer element abutting against the base and the clamping mechanism, respectively.

[0012] The guide rod, the buffer is sleeved on the guide rod, one end of the guide rod can slide through the guide hole, and the other end is connected to the clamping mechanism.

[0013] In one embodiment, the clamping mechanism includes:

[0014] A support assembly is disposed on the base, the support assembly defining a load-bearing space configured to bear the axle;

[0015] A clamping assembly, rotatably connected to the support assembly, is configured to clamp the axle in the bearing space.

[0016] In one embodiment, the clamping assembly includes:

[0017] transmission shaft;

[0018] A clamping arm is mounted on the drive shaft;

[0019] A clamping drive component is connected to the drive shaft, and the clamping drive component is configured to drive the drive shaft to rotate, thereby causing the clamping arm to move between an open position and a clamping position.

[0020] When the clamping arm is in the open position, the clamping arm is away from the bearing space;

[0021] When the clamping arm is in the clamping position, the clamping arm abuts against the axle.

[0022] In one embodiment, the clamping assembly further includes an identification plate disposed on the drive shaft, and the clamping assembly further includes:

[0023] A first sensor is used to sense the recognition plate when the clamping arm is in the open limit position;

[0024] And / or, a second sensor, the second sensor being used to sense the identification plate when the clamping arm is in the clamped limit position.

[0025] In one embodiment, the support component includes:

[0026] A first support and a second support are connected at an angle, and a load-bearing space is defined between the first support and the second support. The first support and the second support are used to support an axle placed in the load-bearing space.

[0027] In one embodiment, the support component further includes:

[0028] A third sensor is configured to sense whether the axle is carried in the carrying space.

[0029] In one embodiment, the axle clamping device further includes:

[0030] An off-center support mechanism is configured to support the gearbox on the axle.

[0031] In one embodiment, the off-center load support mechanism includes:

[0032] The connecting plate is connected to the base;

[0033] A support plate is connected to the connecting plate, and the support plate and the connecting plate are arranged in a stepped manner in a first direction. The support plate is configured to support the gearbox.

[0034] In one embodiment, the off-center load support mechanism further includes:

[0035] A guide assembly is disposed between the connecting plate and the base, the guide assembly being configured to provide guidance for the connecting plate to move on the base in a second direction perpendicular to the first direction.

[0036] The beneficial effects of this application are as follows:

[0037] This application provides an axle clamping device for a gearbox wheelset, which includes a gearbox and an axle. The axle clamping device includes a base, a clamping mechanism, and an elastic adjustment component. The clamping mechanism supports and clamps the axle, and the elastic adjustment component is disposed between the base and the clamping mechanism. The elastic adjustment component can adjust the bias force caused by the gearbox's biased load on the clamping mechanism. This axle clamping device adjusts the bias force caused by the gearbox's biased load through the elastic adjustment component, preventing the bias force from being applied to the clamping mechanism and causing deformation of the support mechanism. This helps to improve the service life of the support mechanism and eliminates the need for frequent replacement and maintenance. At the same time, the elastic adjustment component can adapt to the deviation of the clamping force at both ends of the axle when clamping the wheels, avoiding difficulties in wheel clamping due to slight misalignment between the wheels and the axle, ensuring smooth clamping, preventing damage to the axle during wheel clamping, and improving the success rate of the clamping process. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the working state of the axle clamping device provided in one embodiment of this application.

[0039] Figure 2 This is a schematic diagram of the axle clamping device provided in one embodiment of this application. Figure 1 .

[0040] Figure 3This is a schematic diagram of the axle clamping device provided in one embodiment of this application. Figure 2 .

[0041] Explanation of reference numerals in the attached figures:

[0042] 100 - Base;

[0043] 200-Clamping mechanism; 210-Support assembly; 211-Bearing space; 212-First support base; 213-Second support base; 214-Third sensor; 215-First pad; 220-Clamping assembly; 221-Clamping drive component; 222-Drive shaft; 223-Clamping arm; 224-Identification plate; 225-First sensor; 226-Second sensor;

[0044] 300 - Elastic adjustment component; 310 - Buffer; 320 - Guide rod;

[0045] 400 - Off-center load support mechanism; 410 - Connecting plate; 420 - Support plate; 430 - Guide assembly; 431 - Guide rail; 432 - Slider; 433 - Clamping device; 440 - Second pad;

[0046] 1000 - Axle; 2000 - Gearbox. Detailed Implementation

[0047] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0048] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0050] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0051] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0052] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0053] See Figure 1 , Figure 1 A schematic diagram of the working state of the axle clamping device provided in one embodiment of this application is shown. Figure 2 A schematic diagram of the axle clamping device provided in one embodiment of this application is shown. Figure 1 . Figure 3 A schematic diagram of the axle clamping device provided in one embodiment of this application is shown. Figure 2 .

[0054] like Figures 1-3 As shown, this embodiment provides an axle clamping device for a gearbox wheelset. The gearbox wheelset includes a gearbox 2000 and an axle 1000. Specifically, the axle clamping device is used to clamp the axle 1000 of the gearbox wheelset to facilitate wheel assembly. The axle clamping device includes a base 100, a clamping mechanism 200, and an elastic adjustment component 300. The clamping mechanism 200 supports and clamps the axle 1000. The elastic adjustment component 300 is disposed between the base 100 and the clamping mechanism 200, and can adjust the biasing force caused by the gearbox 2000's biased load on the clamping mechanism 200. This axle 1000 clamping device, through the elastic adjustment component 300, adjusts the biasing force caused by the gearbox 2000's biased load, preventing the biasing force from being applied to the clamping mechanism 200 and causing deformation of the support mechanism. This helps to improve the service life of the support mechanism and eliminates the need for frequent replacement and maintenance. Meanwhile, the elastic adjustment component 300 can adapt to the deviation of the pressing force of the wheels at both ends of the axle 1000, avoid the difficulty of pressing the wheels due to the slight misalignment of the wheels and the axle 1000, ensure the smooth pressing process, avoid damage to the axle 1000 during the wheel pressing process, and help improve the success rate of the pressing process.

[0055] Furthermore, the elastic adjustment assembly 300 includes a guide rod 320 and a buffer member 310. The buffer member 310 is disposed between the base 100 and the clamping mechanism 200, with both ends of the buffer member 310 abutting against the base 100 and the clamping mechanism 200 respectively. The elastic adjustment assembly 300 buffers the weight bias force of the clamping mechanism 200 through the buffer member 310. The buffer member 310 has a free deformation range and is highly flexible, which can flexibly adapt to the changes in weight bias force caused during the transfer of gearbox wheelsets.

[0056] For example, the buffer 310 is a spring. Springs are commonly used buffers because they are simple in structure and low in cost. Preferably, the buffer 310 is a rectangular spring, which has strong elasticity and can be used to bear a large weight. When the axle 1000 is fixed in the clamping mechanism 200, the rectangular spring is slightly compressed to adjust the bias force caused by the off-center load of the gearbox 2000.

[0057] Meanwhile, when the gearbox wheelset is pressed onto the axle 1000 by an external mechanism, due to slight misalignment between the wheel and the axle 1000, the pressing forces at both ends may be too strong, making the pressing process difficult and potentially damaging the wheel and axle 1000. At this point, the buffer 310's buffering adjustment function can adapt to the deviation in pressing forces at both ends, generating different degrees of compression to ensure smooth pressing.

[0058] Furthermore, there are multiple buffer elements 310 and multiple guide rods 320, with each buffer element 310 and multiple guide rods 320 corresponding to one another, and the multiple buffer elements 310 are arranged in an array to improve the buffering effect.

[0059] The base 100 is provided with a guide hole, and the buffer 310 is sleeved on the guide rod 320. One end of the guide rod 320 is slidably disposed in the guide hole, and the other end is connected to the pressing mechanism 200. This can prevent the buffer 310 from folding and becoming unable to recover under the action of pressure deviation, which is beneficial to improving the stability of the buffering effect of the buffer 310.

[0060] like Figures 1-3 As shown, in one embodiment, the clamping mechanism 200 includes a support assembly 210 and a clamping assembly 220. The support assembly 210 is disposed on the base 100 and defines a bearing space 211, which is configured to bear an axle 1000. The clamping assembly 220 is rotatably connected to the support assembly 210 and is configured to clamp the axle 1000 in the bearing space 211. This clamping mechanism 200 uses the clamping assembly 220 to fix and clamp the axle 1000, which helps to improve the stability of the axle 1000.

[0061] Optionally, the carrying space 211 is a V-shaped space, which can accommodate axles 1000 of different diameters. At the same time, the axle 1000 placed in the carrying space 211 can automatically align under the action of gravity.

[0062] The clamping assembly 220 includes a clamping drive 221, a drive shaft 222, and a clamping arm 223. The drive shaft 222 is connected to the clamping drive 221, and the clamping arm 223 is mounted on the drive shaft 222. The clamping drive 221 is configured to drive the drive shaft 222 to rotate, causing the clamping arm 223 to move between an open position and a clamping position. When the clamping arm 223 is in the open position, it is away from the bearing space 211. When the clamping arm 223 is in the clamping position, it abuts against the axle 1000. There can be two clamping arms 223, which are spaced apart circumferentially on the drive shaft 222 to prevent the axle 1000 from twisting during wheel assembly, thus improving the stability of the clamping assembly 220 in fixing the wheel.

[0063] Optionally, a nylon pad may be provided on the lower surface of the clamping arm 223 to prevent scratches on the surface of the axle 1000 during the clamping process.

[0064] Furthermore, the clamping assembly 220 also includes an identification plate 224 disposed on the drive shaft 222, and the clamping assembly 220 also includes a first sensor 225, which is used to sense the identification plate 224 when the clamping arm 223 is in the open limit position, thereby determining the maximum opening angle of the clamping arm 223.

[0065] Optionally, the clamping assembly 220 further includes a second sensor 226, which is used to sense the recognition plate 224 when the clamping arm 223 is in the clamped limit position, thereby preventing the clamping arm 223 from over-clamping the axle 1000. It also prevents the clamping arm 223 from accidentally performing a clamping action when there is no axle 1000 in the load-bearing space 211, thus avoiding accidents.

[0066] During operation, the clamping drive 221 opens the clamping arm 223, causing the identification plate 224 to rotate until the first sensor 225 detects the identification plate 224, at which point the clamping drive 221 stops working. After the axle 1000 is placed in position, the clamping drive 221 drives the clamping arm 223 to rotate in the opposite direction until it contacts the axle 1000 and the torque value reaches the standard, at which point the clamping arm 223 stably clamps the axle 1000. If the axle 1000 is not in the bearing space 211 and the clamping arm 223 mistakenly performs a clamping action, the second sensor 226 detects the identification plate 224, and the clamping drive 221 immediately stops working to avoid an accident.

[0067] The support assembly 210 includes a first support base 212 and a second support base 213 connected at an angle, thereby forming a V-shaped connection between the first support base 212 and the second support base 213. A load-bearing space 211 is defined between the first support base 212 and the second support base 213, which are used to support the axle 1000 placed in the load-bearing space 211.

[0068] Optionally, along the axial direction of the drive shaft 222, the first support seat 212 and the second support seat 213 are two sets, and the two sets are spaced apart. The axle 1000 is arranged parallel to the axial direction of the drive shaft 222 in the bearing space 211, thereby further improving the positioning effect of the axle 1000. In addition, the two sets of first support seats 212 and second support seats 213 help to increase the length of the axle 1000 in the third direction Y, improve the stability of fixing the axle 1000, and prevent the axle 1000 from overturning.

[0069] Optionally, the support assembly 210 further includes a first pad 215, which is disposed on the surfaces of the first support seat 212 and the second support seat 213 facing the bearing space 211. The first pad 215 is used to buffer the pressure between the axle 1000 and the first support seat 212 and the second support seat 213 to avoid damage to the axle 1000 during the pressing process.

[0070] For example, the first pad 215 may be made of nylon.

[0071] Optionally, the support assembly 210 further includes a third sensor 214, which is configured to sense whether the axle 1000 is carried in the bearing space 211, so that the axle clamping device can use the third sensor 214 to sense whether the axle 1000 is in the bearing space 211. When the axle 1000 is in the bearing space 211, a signal is sent, and the clamping assembly 220 can perform a clamping operation.

[0072] During operation, the clamping drive 221 receives the axle 1000 positioning signal from the third sensor 214 and then drives the clamping arm 223 to rotate. When the torque value of the clamping drive 221 reaches a preset torque value, the clamping drive 221 stops driving. This clamping drive 221 is a servo motor; preferably, it is a brake servo motor, which prevents the clamping force from disappearing after power failure, thus avoiding the axle 1000 tipping over and improving the safety of the axle clamping device.

[0073] The axle 1000 clamping device also includes an off-center support mechanism 400, which is configured to support the gearbox 2000 on the axle 1000, thereby supporting the weight of the gearbox 2000. This helps to improve the stability of the axle clamping device in fixing the axle 1000, and avoids the axle 1000 from falling off due to the off-center weight of the gearbox 2000 or uneven pressure on the support component 210. This also helps to effectively prevent the axle 1000 from tipping over.

[0074] Specifically, the off-center load support mechanism 400 includes a connecting plate 410 and a support plate 420. The connecting plate 410 is connected to the base 100, and the support plate 420 is connected to the connecting plate 410. The support plate 420 and the connecting plate 410 are arranged in a stepped manner in the first direction Z. The support plate 420 is configured to support the gearbox 2000. Herein, the first direction Z is the height direction. The connecting plate 410 is used to fix the off-center load support mechanism 400, and the support plate 420 is lower than the connecting plate 410 and is used to support the gearbox 2000, thereby preventing the axle 1000 from falling off due to the weight of the gearbox 2000 being off-center or causing uneven pressure on the support assembly 210.

[0075] The off-center load support mechanism 400 also includes a guide assembly 430 disposed between the connecting plate 410 and the base 100. The guide assembly 430 is configured to provide guidance for the connecting plate 410 to move on the base 100 along a second direction X, which is perpendicular to the first direction Z. Before using the off-center load support mechanism 400, the positions of the connecting plate 410 and the support plate 420 can be adjusted by the guide assembly 430, so that the position of the off-center load support mechanism 400 can be adapted to different models of gearbox wheelsets, thus expanding its application range.

[0076] Specifically, the guide assembly 430 includes a slidingly engaged guide rail 431 and a slider 432. One of the guide rail 431 and the slider 432 is disposed on the base 100, and the other is disposed on the connecting plate 410. The guide rail 431 extends along the second direction X, thereby improving the stability of the connecting plate 410 in the second direction X and preventing jamming.

[0077] In addition, the guide assembly 430 also includes a clamp 433, which fixes the relative position of the connecting plate 410 and the base 100 when the connecting plate 410 is adjusted to the corresponding position, preventing the connecting plate 410 from shifting during the fixing of the axle 1000 and thus failing to support the weight of the gearbox 2000. Before installing the axle 1000, the clamp 433 can be unlocked, and the position of the connecting plate 410 can be adjusted directionally along the guide rail 431.

[0078] Furthermore, the off-center load support mechanism 400 also includes a second pad 440, which is a nylon pad to prevent scratches on the gearbox 2000.

[0079] This axle clamping device eliminates the need for manual clamping of the axle, improving safety; the entire process is automated, increasing work efficiency; and it eliminates the need for high-precision wheel positioning, reducing operational difficulty.

[0080] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0081] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An axle clamping device for a gearbox wheelset, the gearbox wheelset comprising a gearbox and an axle, characterized in that, The axle clamping device includes: Base; A clamping mechanism is configured to carry and clamp the axle; An elastic adjustment assembly is disposed between the base and the clamping mechanism, the elastic adjustment assembly being configured to adjust the biasing force caused by the gearbox's bias load on the clamping mechanism.

2. The axle clamping device according to claim 1, characterized in that, The base is provided with a guide hole, and the elastic adjustment component includes: A buffer element is disposed between the base and the clamping mechanism, with both ends of the buffer element abutting against the base and the clamping mechanism, respectively. The guide rod, the buffer is sleeved on the guide rod, one end of the guide rod can slide through the guide hole, and the other end is connected to the clamping mechanism.

3. The axle clamping device according to claim 1, characterized in that, The clamping mechanism includes: A support assembly is disposed on the base, the support assembly defining a load-bearing space configured to bear the axle; A clamping assembly, rotatably connected to the support assembly, is configured to clamp the axle in the bearing space.

4. The axle clamping device according to claim 3, characterized in that, The clamping assembly includes: transmission shaft; A clamping arm is mounted on the drive shaft; A clamping drive component is connected to the drive shaft, and the clamping drive component is configured to drive the drive shaft to rotate, thereby causing the clamping arm to move between an open position and a clamping position. When the clamping arm is in the open position, the clamping arm is away from the bearing space; When the clamping arm is in the clamping position, the clamping arm abuts against the axle.

5. The axle clamping device according to claim 4, characterized in that, The clamping assembly further includes an identification plate disposed on the drive shaft, and the clamping assembly further includes: A first sensor is used to sense the recognition plate when the clamping arm is in the open limit position; And / or, a second sensor, the second sensor being used to sense the identification plate when the clamping arm is in the clamped limit position.

6. The axle clamping device according to claim 5, characterized in that, The support components include: A first support and a second support are connected at an angle, and a load-bearing space is defined between the first support and the second support. The first support and the second support are used to support an axle placed in the load-bearing space.

7. The axle clamping device according to claim 6, characterized in that, The support components also include: A third sensor is configured to sense whether the axle is carried in the carrying space.

8. The axle clamping device according to any one of claims 1-7, characterized in that, The axle clamping device also includes: An off-center support mechanism is configured to support the gearbox on the axle.

9. The axle clamping device according to claim 8, characterized in that, The off-center load support mechanism includes: The connecting plate is connected to the base; A support plate is connected to the connecting plate, and the support plate and the connecting plate are arranged in a stepped manner in a first direction. The support plate is configured to support the gearbox.

10. The axle clamping device according to claim 9, characterized in that, The off-center load support mechanism also includes: A guide assembly is disposed between the connecting plate and the base, the guide assembly being configured to provide guidance for the connecting plate to move on the base in a second direction perpendicular to the first direction.

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