Bushing dismounting and mounting tool

Abstract

The invention relates to the technical field of disassembly and assembly tools, and provides a bush disassembly and assembly tool which comprises a connecting device and a push-pull device, the connecting device comprises a base and a pair of resisting mechanisms, the base penetrates through an inner cavity of a bush, the resisting mechanisms are distributed in the axis direction of the base, and the distance between the resisting mechanisms is larger than the axial size of the bush. When the blocking mechanism is in the unfolded state, the blocking mechanism is partially located outside the base, and when the blocking mechanism is in the folded state, the blocking mechanism is located inside the base. The push-pull device comprises a fixing seat and a push-pull mechanism, the fixing seat is fixed to an installation part where the lining is located, the push-pull mechanism is arranged on the fixing seat, the push-pull mechanism is connected with the base, and the push-pull mechanism exerts pulling force or pushing force on the base in the axis direction of the base. Thus, disassembly of the outer side lining and the inner side lining of the brake hanging seat is achieved, when the inner side lining is disassembled, the installation process of the lining disassembly and assembly tool and the operation process of an operator are not limited by a narrow space between the brake hanging seat and the target longitudinal beam, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of disassembly and assembly tools, and provides a bushing disassembly and assembly tool. Background Art

[0002] The braking system of a rail vehicle is crucial for its safe operation, with the brake unit and brake hanger being key components. The brake unit is a collection of devices that perform specific braking functions, while the brake hanger is the structural component used to mount and secure the brake unit, primarily providing support and positioning to ensure stable and reliable operation. The brake hanger is typically fixed to the rail vehicle's bogie, with a pair of spaced-apart bushings positioned within its mounting hole.

[0003] During maintenance, the bushing needs to be disassembled and replaced. Due to the bushing's small size and high press-fitting force, the related art uses destructive grinding to remove the bushing material, grinding the bushing's inner wall point by point. This process is inefficient and requires high skill from the operator. The grinding process can also easily damage the mounting hole of the brake hanger, reducing the accuracy of the mounting hole. Furthermore, the brake hanger is located to the side of the frame's longitudinal beam. The distance between the pair of bushings closest to the frame's longitudinal beam and the beam is very small, limiting operating space and making disassembly impossible.

[0004] Therefore, how to solve the problem that the bushing in the mounting hole is inconvenient to remove in the related art has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] An embodiment of the present invention provides a bushing disassembly and assembly tool, which is used to solve the defect of inconvenient disassembly of the bushing in the mounting hole in the related art, and improve the disassembly efficiency of the bushing in the mounting hole.

[0006] The present invention provides a bushing disassembly and assembly tool, comprising: A connecting device comprising a base and a pair of resisting mechanisms, wherein the base is adapted to pass through an inner cavity of the bushing, the pair of resisting mechanisms being spaced apart along an axial direction of the base, the distance between the pair of resisting mechanisms being greater than an axial dimension of the bushing, and the resisting mechanisms being switchable between an open state and a closed state. In the open state, the resisting mechanisms are partially located outside the base to abut against an end surface of the bushing, and in the closed state, the resisting mechanisms are located inside the base. The push-pull device includes a fixed seat and a push-pull mechanism. The fixed seat is suitable for being fixed to the mounting component where the bushing is located. The push-pull mechanism is arranged on the fixed seat. The push-pull mechanism is connected to the base. The push-pull mechanism is suitable for applying a pulling force or a pushing force to the base along the axial direction of the base.

[0007] According to a bushing disassembly and assembly tool provided by the present invention, the resisting mechanism includes: at least two stoppers, each of the stoppers being spaced apart along the circumference of the base, the stoppers being slidably connected to the base to move closer to or away from the central axis of the base, and the stoppers being provided with a transmission rod; A transmission plate is rotatably disposed inside the base, wherein the rotation axis of the transmission plate relative to the base is parallel to the axis of the base, and a transmission hole is provided on the transmission plate, wherein the transmission hole is a strip-shaped hole, the length direction of the transmission hole is perpendicular to the axis of the base, and the sliding direction of the stopper relative to the base is arranged at an angle to the length direction of the transmission hole, and the distances between the two ends of the transmission hole in the length direction and the central axis of the base are different, and the transmission rod is located in the transmission hole, and the transmission rod is slidably engaged with the transmission hole; A driving member is fixedly connected to the transmission plate, the driving member is suitable for rotating relative to the base, and the rotation axis of the driving member relative to the base is parallel to the axis of the base.

[0008] According to a bushing disassembly and assembly tool provided by the present invention, a pair of transmission plates are provided, and the pair of transmission plates are respectively provided at both ends of the base, and the driving member includes: A drive shaft, the axis of the drive shaft is parallel to the axis of the base, the drive shaft passes through the transmission plate and the base, a rotation-stop structure is provided between the drive shaft and the transmission plate, both ends of the drive shaft extend to a side away from a pair of transmission plates, and a torque transmission part is formed at the end of the drive shaft.

[0009] According to a bushing disassembly and assembly tool provided by the present invention, a guide structure is provided between the stopper and the base, and the guide structure is suitable for guiding the sliding direction of the stopper relative to the base, and the guide structure includes: A guide hole is provided on the base, the guide hole is a strip-shaped hole, the length direction of the guide hole is perpendicular to the axis of the base, the length direction of the guide hole is parallel to the sliding direction of the stopper relative to the base, the transmission rod is located in the guide hole, and the transmission rod is slidably engaged with the guide hole.

[0010] According to a bushing disassembly and assembly tool provided by the present invention, the push-pull mechanism includes: a rotating block, disposed on the fixed seat, the rotating block being adapted to rotate only relative to the fixed seat, and a rotation axis of the rotating block relative to the fixed seat being parallel to an axis of the base; A threaded rod passes through the fixed seat and the rotating block, the axis of the threaded rod is parallel to the axis of the base, one end of the threaded rod is fixedly connected to the base, the threaded rod is threadedly connected to the rotating block, and the threaded rod can only slide relative to the fixed seat along its own axis.

[0011] According to a bushing disassembly and assembly tool provided by the present invention, the mounting component has a first end face and a second end face, the first end face and the second end face are distributed along the axial direction of the bushing, and the fixing seat includes: a first seat body, adapted to abut against the first end surface of the mounting component, the rotating block and the threaded rod being disposed on the first seat body; The second seat body is adapted to be pressed against the second end surface of the mounting component, and the first seat body and the second seat body are detachably connected.

[0012] According to a bushing disassembly and assembly tool provided by the present invention, the first end of the first seat body is adapted to be tightly pressed against the first end surface of the mounting component, the first end of the first seat body is provided with a first avoidance space, the first avoidance space being adapted to avoid the connecting device and the bushing, the push-pull mechanism passes through the second end of the first seat body and is fixedly connected to the base of the connecting device; The second base comprises: a pressing portion adapted to press against the second end surface of the mounting component, the pressing portion being provided with a second escape space adapted to escape the connecting device and the bushing; The connecting portion is adapted to be detachably connected to the first seat body.

[0013] According to a bushing disassembly and assembly tool provided by the present invention, a plug-in slot is provided on the side of the first seat body, the plug-in slot has a pair of side walls distributed along the axial direction of the base, and the connecting portion is suitable for extending into the plug-in slot.

[0014] According to a bushing disassembly and assembly tool provided by the present invention, the push-pull mechanism further includes: The rotating handle is fixedly arranged on the rotating block.

[0015] According to a bushing disassembly and assembly tool provided by the present invention, the base includes: The first base and the second base are coaxially arranged, the first base is provided with a threaded blind hole at one end close to the second base, the second base is provided with a protrusion at one end close to the first base, the protrusion is threadedly connected to the threaded blind hole, and a pair of the resisting mechanisms are respectively provided on the first base and the second base; At least two adjusting washers are provided, and any one of the adjusting washers is suitable for being placed in the threaded blind hole, and the protrusion is suitable for abutting against the adjusting washers.

[0016] The bushing assembly and disassembly tool provided by the present invention includes a connecting device and a push-pull device. The connecting device includes a base and a pair of resisting mechanisms, and the base is capable of passing through the inner cavity of the bushing. The pair of resisting mechanisms are spaced apart along the axial direction of the base, and the distance between the pair of resisting mechanisms is greater than the axial dimension of the bushing. When the base is located inside the bushing, the pair of resisting mechanisms are located at both ends of the bushing, with one resisting mechanism corresponding to each end of the bushing. The resisting mechanisms are capable of switching between an open state and a closed state. When the resisting mechanisms switch to the open state, the resisting mechanisms are partially located outside the base, and the resisting mechanisms can resist the end face of the bushing located between the pair of resisting mechanisms. The two resisting mechanisms can generate opposite forces on the end face of the bushing. When a positive force is applied to the base along the axial direction of the base, one resisting mechanism can generate a positive force on the bushing. When a negative force is applied to the base along the axial direction of the base, the other resisting mechanism can generate a negative force on the bushing. When the resisting mechanism is switched to the retracted state, the resisting mechanism is located inside the base, and neither resisting mechanism can abut the end face of the bushing. At this point, the connecting device can smoothly move in and out of the bushing. The push-pull device includes a fixed seat and a push-pull mechanism. The fixed seat is fixed to the mounting component where the bushing is located. The push-pull mechanism is disposed on the fixed seat and connected to the base. The push-pull mechanism can apply a pulling or pushing force to the base along the base's axis. When removing the bushing on the brake hanger that is relatively far from the target longitudinal beam of the frame (this bushing is called the outer bushing, and the bushing on the brake hanger that is relatively close to the target longitudinal beam of the frame is called the inner bushing, where the target longitudinal beam is the longitudinal beam on the frame closer to the brake hanger), the fixed seat can be first secured to the brake hanger, and the push-pull mechanism can be positioned on the side of the brake hanger that is away from the target longitudinal beam. Switching the resisting mechanism to the retracted state causes the base to be inserted into the outer bushing, with the base corresponding to the position between the pair of resisting mechanisms. The resisting mechanism is then switched to the open state, and the push-pull mechanism is used to apply a force to the base in a direction away from the target longitudinal beam. The resisting mechanism is used to apply a force to the end face of the outer bushing to drive the outer bushing to move relative to the brake hanger in a direction away from the target longitudinal beam, thereby removing the outer bushing from the brake hanger. When removing the inner bushing, the fixing seat is still installed to ensure that the push-pull mechanism is located on the side of the brake hanger away from the target longitudinal beam. After the connecting device and the inner bushing are matched according to the same steps, the push-pull mechanism is used to apply a force to the base in a direction close to the target longitudinal beam. The resisting mechanism is used to apply a force to the end face of the inner bushing to drive the inner bushing to move relative to the brake hanger in a direction close to the target longitudinal beam, thereby removing the inner bushing from the brake hanger.With such arrangement, the bushing disassembly and assembly tool provided by the present invention can realize the disassembly of the outer bushing and the inner bushing of the brake hanger. Moreover, when disassembling the inner bushing, the push-pull mechanism is located on the side of the brake hanger away from the target longitudinal beam, and the operator also operates on the side of the brake hanger away from the target longitudinal beam. The only difference is that the disassembled inner bushing is removed from the space between the brake hanger and the target longitudinal beam, which eliminates the restriction of the narrow space between the brake hanger and the target longitudinal beam on the installation of the bushing disassembly and assembly tool and the operator's operation process, improves the operational convenience, and solves the problem of inconvenient disassembly of the bushing in the mounting hole in the related art.

[0017] Furthermore, by adjusting the state of the resisting mechanism, the outer bushing to be installed is connected to the connecting device. After the fixing base is installed on the brake hanger, the outer bushing to be installed is aligned with the bushing mounting hole of the brake hanger on the side of the brake hanger away from the target longitudinal beam. The push-pull mechanism is used to apply a force to the base in a direction close to the target longitudinal beam. The resisting mechanism applies a force to the end face of the outer bushing to be installed, thereby press-fitting the outer bushing into the bushing mounting hole of the brake hanger. Similarly, when installing the inner bushing to be installed into the bushing mounting hole of the brake hanger, the push-pull mechanism is still ensured to be located on the side of the brake hanger away from the target longitudinal beam. The connecting device is passed through the bushing mounting hole of the brake hanger until the connecting device is located on the side of the brake hanger close to the target longitudinal beam, and the inner bushing to be installed is connected to the connecting device. Then, the inner bushing to be installed is aligned with the bushing mounting hole on the brake mount, and a force is applied to the base in a direction away from the target longitudinal beam by the push-pull mechanism. The inner bushing is pressed into the bushing mounting hole of the brake mount by the resisting mechanism. In this way, the bushing disassembly and assembly tool provided by the present invention can also realize the installation of the inner bushing and the outer bushing. Moreover, when installing the inner bushing, the push-pull mechanism is located on the side of the brake mount away from the target longitudinal beam, and the operator also operates on the side of the brake mount away from the target longitudinal beam. However, the inner bushing to be installed is installed on the connecting device from the space between the brake mount and the target longitudinal beam, eliminating the restriction of the narrow space between the brake mount and the target longitudinal beam on the installation of the bushing disassembly and assembly tool and the operator's operation process, thereby improving the operational convenience of the bushing installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1This is a schematic diagram of the distribution position of the bushing in the mounting component when the mounting component provided by the present invention is a brake hanger.

[0020] Figure 2 This is a structural schematic diagram of the bushing disassembly and assembly tool provided by the present invention when it is installed on the installation component (the first seat body and the second seat body are both tightly pressed against the installation component).

[0021] Figure 3 This is a structural schematic diagram of the bushing disassembly and assembly tool provided by the present invention when it is installed on the installation component (only the first seat is used to press against the installation component).

[0022] Figure 4 It is a structural schematic diagram of the bushing disassembly and assembly tool provided by the present invention from a certain perspective.

[0023] Figure 5 It is a structural schematic diagram of the bushing disassembly and assembly tool provided by the present invention from another perspective.

[0024] Figure 6 This is a schematic diagram of the bushing disassembly and assembly tool provided by the present invention when disassembling the inner bushing.

[0025] Figure 7 It is a schematic diagram of the bushing disassembly and assembly tool provided by the present invention when disassembling the outer bushing.

[0026] Figure 8 It is a structural schematic diagram of the connecting device provided by the present invention.

[0027] Figure 9 It is a structural schematic diagram of the guide structure position of the connecting device provided by the present invention.

[0028] Figure 10 It is a cross-sectional view of the connecting device provided by the present invention.

[0029] Reference numerals: 1. Outer bushing; 2. Inner bushing; 3. Mounting component; 4. Base; 5. Stopper; 6. Transmission rod; 7. Transmission plate; 8. Transmission hole; 9. Drive shaft; 10. Guide hole; 11. Rotating block; 12. Threaded rod; 13. First seat body; 14. Connecting plate; 15. Tightening part; 16. Connecting part; 17. Rotating handle; 18. First plug-in board; 19. Connecting sleeve. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention but are not intended to limit the scope of the present invention.

[0031] The following combination Figures 1 to 10 The bushing disassembly and assembly tool of the present invention is described.

[0032] like Figures 1 to 10 As shown, the bushing disassembly and assembly tool provided in the embodiment of the present invention includes a connecting device and a push-pull device.

[0033] Specifically, the connecting device includes a base 4 and a pair of resisting mechanisms, and the base 4 can pass through the inner cavity of the bushing. Specifically, the bushing is generally hollow cylindrical, and the cross section of the base 4 can be set to be circular, and the outer diameter of the base 4 needs to be smaller than the inner diameter of the bushing.

[0034] The pair of resisting mechanisms are spaced apart along the axis of the base 4, and the distance between the pair of resisting mechanisms is greater than the axial dimension of the bushing. When the base 4 is located inside the bushing, the pair of resisting mechanisms are respectively located at both ends of the bushing, with each end of the bushing corresponding to a resisting mechanism.

[0035] The resisting mechanism can switch between an open state and a retracted state. When the resisting mechanism switches to the open state, the resisting mechanism is partially located outside the base 4, and the resisting mechanism can resist the end face of the bushing located between a pair of resisting mechanisms. The two resisting mechanisms can generate forces in opposite directions on the end face of the bushing. When a positive force along the axial direction of the base 4 is applied to the base 4, one of the resisting mechanisms can generate a positive force on the bushing. When a reverse force along the axial direction of the base 4 is applied to the base 4, the other resisting mechanism can generate a reverse force on the bushing.

[0036] When the resisting mechanism is switched to the retracted state, the resisting mechanism is located inside the base 4, and any resisting mechanism cannot abut against the end face of the bushing. At this time, the connecting device can smoothly enter and exit the bushing.

[0037] The push-pull device includes a fixed seat and a push-pull mechanism. The fixed seat is used to be fixed to the mounting component 3 where the bushing is located. For the bushing of the brake hanger, the brake hanger serves as the above-mentioned mounting component 3. The distribution positions of the inner bushing 2 and the outer bushing 1 on the mounting component 3 are as follows: Figure 1 The fixing seat is used to fix to the brake hanger.

[0038] The push-pull mechanism is provided on the fixed seat, and is connected to the base 4 . The push-pull mechanism can apply a pulling force or a pushing force along the axial direction of the base 4 to the base 4 .

[0039] When removing the bushing on the brake mount that is relatively far from the target longitudinal beam of the frame (this bushing is called the outer bushing 1, and the bushing on the brake mount that is relatively close to the target longitudinal beam of the frame is the inner bushing 2, and the target longitudinal beam here is the longitudinal beam on the frame that is closer to the brake mount), you can first fix the fixing seat to the brake mount, and make the push-pull mechanism be located on the side of the brake mount away from the target longitudinal beam. Then switch the blocking mechanism to the retracted state, so that the base 4 is inserted into the outer bushing 1, and the base 4 corresponds to the position between a pair of blocking mechanisms. Then switch the blocking mechanism to the open state, refer to Figure 7 The push-pull mechanism is used to apply a force to the base 4 in a direction away from the target longitudinal beam, and the resisting mechanism is used to apply a force to the end face of the outer bushing 1 to drive the outer bushing 1 to move relative to the brake hanger in a direction away from the target longitudinal beam, thereby removing the outer bushing 1 from the brake hanger.

[0040] When removing the inner bushing 2, when installing the fixing seat, still ensure that the push-pull mechanism is located on the side of the brake hanger away from the target longitudinal beam. Figure 6 The push-pull mechanism is used to apply a force to the base 4 in a direction close to the target longitudinal beam, and the resisting mechanism is used to apply a force to the end face of the inner bushing 2 to drive the inner bushing 2 to move relative to the brake hanger in a direction close to the target longitudinal beam, thereby removing the inner bushing 2 from the brake hanger.

[0041] With such a configuration, the bushing disassembly and assembly tool provided in the embodiment of the present invention can be used to disassemble both the outer bushing 1 of the brake hanger and the inner bushing 2 of the brake hanger. Moreover, when disassembling the inner bushing 2, the push-pull mechanism is located on the side of the brake hanger away from the target longitudinal beam, and the operator also operates on the side of the brake hanger away from the target longitudinal beam. The inner bushing 2 to be disassembled is only removed from the space between the brake hanger and the target longitudinal beam, eliminating the restrictions imposed by the narrow space between the brake hanger and the target longitudinal beam on the installation of the bushing disassembly and assembly tool and the operator's operation process, thereby improving operational convenience and resolving the problem of inconvenient disassembly of the bushing in the mounting hole in the related art. Scratching of the inner wall surface of the bushing mounting hole of the mounting component 3 is effectively prevented, and the bushing extraction utilization rate is increased to 100%.

[0042] Furthermore, by adjusting the state of the resisting mechanism, the outer bushing 1 to be installed is connected to the connecting device. The fixing base is then mounted on the brake hanger, ensuring that the push-pull mechanism is located on the side of the brake hanger away from the target longitudinal beam. The outer bushing 1 to be installed is aligned with the bushing mounting hole on the brake hanger on the side of the brake hanger away from the target longitudinal beam. The push-pull mechanism applies a force to the base 4 in a direction toward the target longitudinal beam. The resisting mechanism applies a force to the end face of the outer bushing 1 to be installed, thereby press-fitting the outer bushing 1 into the bushing mounting hole of the brake hanger.

[0043] Similarly, when installing the inner bushing 2 to be installed in the bushing mounting hole of the brake mount, ensure that the push-pull mechanism is located on the side of the brake mount away from the target longitudinal beam. Pass the connecting device through the bushing mounting hole of the brake mount until the connecting device is located on the side of the brake mount closer to the target longitudinal beam and the inner bushing 2 to be installed is connected to the connecting device. Then, align the inner bushing 2 to be installed with the bushing mounting hole of the brake mount. Use the push-pull mechanism to apply a force to the base 4 in a direction away from the target longitudinal beam. Use the resisting mechanism to apply a force to the end face of the inner bushing 2 to be installed, and press-fit the inner bushing 2 into the bushing mounting hole of the brake mount.

[0044] With such arrangement, the bushing disassembly and assembly tool provided in the embodiment of the present invention can also realize the installation of the inner bushing 2 and the outer bushing 1. Moreover, when installing the inner bushing 2, the push-pull mechanism is located on the side of the brake mount away from the target longitudinal beam, and the operator also operates on the side of the brake mount away from the target longitudinal beam. The only difference is that the inner bushing 2 to be installed is installed on the connecting device from the space between the brake mount and the target longitudinal beam, which eliminates the restriction of the narrow space between the brake mount and the target longitudinal beam on the installation of the bushing disassembly and assembly tool and the operator's operation process, improves the operational convenience of the bushing installation, and increases the one-time assembly pass rate of the bushing to 100%.

[0045] It should be noted that when the bushing is disassembled and assembled using the bushing assembly and disassembly tool provided in the embodiments of the present invention, the resisting mechanism acts on the end face of the bushing, does not tighten the inner wall of the bushing, and does not increase the tension between the bushing and the bushing mounting hole of the brake hanger. Furthermore, as long as the distance between the outer contour of the resisting mechanism and the central axis of the base 4 is greater than the inner radius of the bushing when the resisting mechanism is in the open state, the resisting mechanism can abut against the end face of the bushing, thus requiring less dimensional accuracy for the resisting mechanism and making it adaptable to the assembly and disassembly of bushings with different inner diameters.

[0046] In addition, during the process of disassembling and assembling the bushing, there is no need to apply impact force to the bushing, which reduces the impact on the bushing and saves time and effort.

[0047] In the embodiment of the present invention, the resisting mechanism includes a stopper 5, a transmission plate 7 and a driving member, referring to Figures 8 to 10 .

[0048] Each retaining mechanism includes at least two stoppers 5, each of which is spaced apart along the circumference of the base 4. The stoppers 5 are slidably connected to the base 4 to move closer to or further away from the central axis of the base 4. Specifically, each retaining mechanism includes four stoppers 5, each of which is spaced apart along the circumference of the base 4. The stoppers 5 can be arranged radially of the base 4 relative to the sliding direction of the base 4. The end of the stopper 5 away from the central axis of the base 4 is configured in an arc shape.

[0049] A transmission plate 7 is rotatably disposed within the base 4. The axis of rotation of the transmission plate 7 relative to the base 4 is parallel to the axis of the base 4. A transmission hole 8 is provided on the transmission plate 7. The transmission hole 8 is a strip-shaped hole, the length of which is perpendicular to the axis of the base 4. The sliding direction of the stopper 5 relative to the base 4 is arranged at an angle to the length of the transmission hole 8. The distances between the two ends of the transmission hole 8 in the length direction and the central axis of the base 4 are different.

[0050] A transmission rod 6 is provided on the stopper 5 . The transmission rod 6 on the stopper 5 extends into a transmission hole 8 of the transmission plate 7 , and the transmission rod 6 and the transmission hole 8 are slidably matched.

[0051] The driving member is fixedly connected to the transmission plate 7, and the driving member can rotate relative to the base 4. The rotation axis of the driving member relative to the base 4 is parallel to the axis of the base 4. When the driving member rotates relative to the base 4, it can drive the transmission plate 7 to rotate relative to the base 4. Since the stopper 5 can only slide relative to the base 4 in the radial direction of the base 4, when the transmission plate 7 rotates relative to the base 4, the transmission hole 8 on the transmission plate 7 will also rotate relative to the base 4. The side wall of the transmission hole 8 will interact with the transmission rod 6, and the force exerted by the transmission hole 8 on the transmission rod 6 has a component along the radial direction of the base 4, so that the transmission rod 6 can drive the stopper 5 to slide relative to the base 4 in the radial direction of the base 4.

[0052] Specifically, when the driving member and the transmission plate 7 are rotated in a clockwise direction relative to the base 4, the transmission rod 6 and the stopper 5 are caused to slide in a direction close to the axis of the base 4; when the driving member and the transmission plate 7 are rotated in a counterclockwise direction relative to the base 4, the transmission rod 6 and the stopper 5 are caused to slide in a direction away from the axis of the base 4.

[0053] The transmission hole 8 can be set as follows Figure 8 The arc shown.

[0054] In this embodiment, a pair of transmission plates 7 are provided, and the pair of transmission plates 7 are respectively provided at both ends of the base 4. Each resisting mechanism corresponds to a transmission plate 7, which is beneficial to improving the driving force of the stopper 5 and making the resisting mechanism switch state smoothly.

[0055] The drive member includes a drive shaft 9, whose axis is parallel to the axis of the base 4 and extends through the transmission plates 7 and the base 4. A rotation stop is provided between the drive shaft 9 and each transmission plate 7. This stop restricts relative rotation between the drive shaft 9 and the transmission plates 7, thereby ensuring their relative fixation. Furthermore, both transmission plates 7 rotate synchronously with the drive shaft 9.

[0056] Specifically, the anti-rotation structure includes an anti-rotation hole and an anti-rotation block. The anti-rotation hole is set on the transmission plate 7, and the anti-rotation block is set on the drive shaft 9. Through the cooperation between the anti-rotation hole and the anti-rotation block, the relative rotation between the drive shaft 9 and the transmission plate 7 can be limited.

[0057] In a specific embodiment, the aforementioned anti-rotation hole may be a rectangular hole, and the aforementioned anti-rotation block may be a cubic block with a rectangular cross-section.

[0058] The ends of the drive shaft 9 extend to the side away from the pair of transmission plates 7, and the end of the drive shaft 9 is formed with a torque transmission part. A wrench is used to act on the torque transmission part to apply torque to the torque transmission part and the drive shaft 9, thereby rotating the drive shaft 9 relative to the base 4.

[0059] In some embodiments, a guide structure is provided between the stopper 5 and the base 4 , and the guide structure is used to guide the sliding direction of the stopper 5 relative to the base 4 , and at the same time can limit the stopper 5 from sliding in other directions relative to the base 4 .

[0060] The guide structure includes a guide hole 10, which is provided in the base 4. The guide hole 10 is a strip-shaped hole. The length direction of the guide hole 10 is perpendicular to the axis of the base 4 and parallel to the sliding direction of the stopper 5 relative to the base 4. Specifically, the length direction of the guide hole 10 is provided along the radial direction of the base 4.

[0061] The transmission rod 6 is located in the guide hole 10, and the transmission rod 6 and the guide hole 10 are slidably matched. Figure 9 shown.

[0062] When the transmission plate 7 rotates relative to the base 4, when the transmission hole 8 of the transmission plate 7 interacts with the transmission rod 6 of the stopper 5, the guide hole 10 can guide the transmission rod 6 so that the transmission rod 6 can only slide relative to the base 4 along the radial direction of the base 4.

[0063] The push-pull mechanism may be configured as a screw-driven structure.

[0064] In the embodiment of the present invention, the push-pull mechanism includes a rotating block 11 and a threaded rod 12 .

[0065] The rotating block 11 is arranged on the fixed seat, and the rotating block 11 can only rotate relative to the fixed seat, and the rotation axis of the rotating block 11 relative to the fixed seat is parallel to the axis of the base 4. Here, the rotating block 11 cannot be close to or away from the fixed seat along the axis of the base 4.

[0066] The threaded rod 12 passes through the fixed seat and the rotating block 11. The axis of the threaded rod 12 is parallel to the axis of the base 4. The threaded rod 12 can only slide relative to the fixed seat along its own axis. One end of the threaded rod 12 is fixedly connected to the base 4, and the threaded rod 12 is threadedly connected to the rotating block 11.

[0067] Specifically, for the fixed connection structure between the threaded rod 12 and the base 4, a connecting sleeve 19 can be set at the end of the threaded rod 12, one end of the connecting sleeve 19 is threadedly connected to the end of the threaded rod 12, and the other end of the connecting sleeve 19 is threadedly connected to the base 4.

[0068] By rotating the rotating block 11 relative to the fixed seat, the threaded rod 12 can slide along its own axis relative to the fixed seat. When the base 4 is connected to the threaded rod 12, the base 4 can move along its own axis relative to the fixed seat synchronously with the threaded rod 12. When the retaining mechanism on the base 4 interacts with the bushing, it can drive the bushing to move relative to the mounting component 3, thereby removing the bushing from the mounting component 3 or installing the bushing on the mounting component 3.

[0069] The mounting component has a first end surface and a second end surface, and the first end surface and the second end surface are distributed along the axial direction of the bushing.

[0070] Regarding the structure of the fixing seat, in the embodiment of the present invention, the fixing seat includes a first seat body 13 and a second seat body. The first seat body 13 is used to press against the first end surface of the mounting component 3, and the second seat body is used to press against the second end surface of the mounting component 3.

[0071] If the mounting component 3 is a brake mount, the end face of the brake mount away from the target longitudinal beam can be considered the first end face, and the end face of the brake mount closer to the target longitudinal beam can be considered the second end face. The side of the brake mount away from the target longitudinal beam has relatively more space, and the rotating block 11 and threaded rod 12 are disposed on the first base 13, which provides more operating space for the rotating block 11 and makes operation more convenient.

[0072] The first base body 13 and the second base body are detachably connected. When the first base body 13 and the second base body are connected together, the interaction between the first base body 13 and the first end face of the mounting component 3 and the interaction between the second base body and the second end face of the mounting component 3 can limit the displacement of the first base body 13 and the second base body relative to the mounting component 3 along the axial direction of the base 4, thereby providing stable support for the push-pull mechanism.

[0073] In some cases, it is only necessary to use the first seat 13 to abut against the first end surface of the mounting component 3, such as Figure 3 For example, when installing the inner bushing 2 or removing the outer bushing 1, the threaded rod 12 needs to drive the connecting device to move in a direction away from the second seat body.

[0074] In other cases, it is necessary to use the first base 13 to abut against the first end surface of the mounting component 3, and at the same time, it is necessary to use the second base to abut against the second end surface of the mounting component 3, such as Figure 2 For example, when installing the outer bushing 1 or removing the inner bushing 2, the threaded rod 12 needs to push the connecting device to move in a direction close to the second seat body.

[0075] In this embodiment, the first end of the first base 13 is used to press against the first end surface of the mounting component 3 , and the push-pull mechanism passes through the second end of the first base 13 and is fixedly connected to the base 4 of the connecting device.

[0076] A first avoidance space is provided at the first end of the first seat body 13 . The first avoidance space is used to avoid the connecting device and the bushing, so as to avoid interference between the first seat body 13 and the outer bushing 1 when disassembling or assembling the outer bushing 1 .

[0077] Specifically, the first seat body 13 can be configured as a cylindrical structure with an open first end. Along the axis of the base 4, the projection area of the connecting device and the bushing is located inside the projection area of the first avoidance space.

[0078] The dimension of the first avoidance space along the axial direction of the base 4 is larger than the dimension of the connecting device along the axial direction of the base 4 to ensure that the bushing and the connecting device can be completely located in the first avoidance space and that the outer bushing 1 can be completely removed.

[0079] Regarding the connection structure between the rotating block 11 and the first base body 13, a receiving cavity is provided at the second end of the first base body 13, the rotating block 11 is placed in the receiving cavity, and a cover plate is provided at the end of the receiving cavity away from the first end of the first base body 13. The cover plate is detachably connected to the first base body 13 and can abut against the rotating block 11 to prevent the rotating block 11 from moving away from the first base body 13. Bearings can be provided at both ends of the rotating block 11 to reduce resistance and wear when the rotating block 11 rotates.

[0080] The second base body includes a pressing portion 15 and a connecting portion 16. The pressing portion 15 is used to press against the second end surface of the mounting component 3, and the connecting portion 16 is used to be detachably connected to the first base body 13.

[0081] The pressing portion 15 is provided with a second avoidance space, and the second avoidance space is used to avoid the connecting device and the bushing, so as to avoid interference between the pressing portion 15 and the inner bushing 2 when the inner bushing 2 is disassembled.

[0082] Specifically, the abutting portion 15 of the second seat body can be configured as a flat plate structure.

[0083] In a further embodiment, a plug-in slot is provided on the side of the first base 13 . The plug-in slot has a pair of side walls distributed along the axis direction of the base 4 . The connecting portion 16 can extend into the plug-in slot.

[0084] Through the interaction between the connecting portion 16 and the side wall of the insertion slot, the connecting portion 16 and the pressing portion 15 can be restricted from moving relative to the first seat body 13 along the axial direction of the base 4, thereby ensuring the relative stability of the first seat body 13 and the second seat body along the axial direction of the base 4.

[0085] Two first plug-in boards 18 are positioned on the sides of the first base 13. These boards are perpendicular to the axis of the base 4 and spaced apart along the axis of the base 4. The space between these boards serves as the aforementioned insertion slot. The connecting portion 16 includes a second plug-in board, which is perpendicular to the axis of the base 4 and can be inserted between the two first plug-in boards 18.

[0086] The abutting portion 15 and the connecting portion 16 can be connected together by the connecting plate 14. Specifically, the abutting portion 15, the connecting plate 14 and the connecting portion 16 can be integrally formed.

[0087] In some embodiments, the push-pull mechanism further includes a rotating handle 17, which is fixed to the rotating block 11. This facilitates the operator to apply torque to the rotating block 11 and facilitates operation.

[0088] In a further embodiment, the base 4 is configured to be detachable and have an adjustable size in the axial direction.

[0089] The base 4 includes a first base, a second base and an adjusting gasket.

[0090] The first base and the second base are coaxially arranged. A threaded blind hole is provided at one end of the first base proximate to the second base. A raised portion is provided at one end of the second base proximate to the first base. The raised portion is threadably connected to the threaded blind hole. The threaded engagement of the raised portion with the threaded blind hole enables a detachable connection between the first and second bases.

[0091] There are at least two adjusting gaskets, any one of which can be placed in the threaded blind hole, and the protrusion can be against the adjusting gasket to ensure that a certain pre-tightening force can be generated when the protrusion is threadedly connected to the threaded blind hole, thereby ensuring a stable connection between the first base and the second base.

[0092] Each adjustment shim has a certain thickness. By placing different numbers of adjustment shims in the threaded blind hole, when the first and second bases are relatively rotated until the protrusions abut against the adjustment shims, the distance between the ends of the first and second bases that are separated from each other becomes different, that is, the resulting axial dimensions of the base 4 become different. By adjusting the number of adjustment shims used, the axial dimension of the base 4 can be adjusted.

[0093] A pair of resisting mechanisms of the connecting device are respectively arranged on the first base and the second base. By adjusting the number of adjusting gaskets used, the distance between the pair of resisting mechanisms can be adjusted, so that the connecting device can be suitable for connection with bushings of different axial sizes, so that the bushing disassembly and assembly tool provided in the embodiment of the present invention can adapt to the disassembly and assembly of bushings of different axial sizes, and is more adaptable.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A bushing disassembly and assembly tool, characterized in that: include: A connecting device comprises a base (4) and a pair of resisting mechanisms, wherein the base (4) is adapted to pass through an inner cavity of a bushing, the pair of resisting mechanisms are spaced apart along the axial direction of the base (4), the distance between the pair of resisting mechanisms is greater than the axial dimension of the bushing, and the resisting mechanisms are capable of switching between an open state and a closed state. In the open state, the resisting mechanisms are partially located outside the base (4) to abut against the end face of the bushing, and in the closed state, the resisting mechanisms are located inside the base (4); A push-pull device comprises a fixed seat and a push-pull mechanism, wherein the fixed seat is suitable for being fixed to the mounting component (3) where the bushing is located, the push-pull mechanism is arranged on the fixed seat, the push-pull mechanism is connected to the base (4), and the push-pull mechanism is suitable for applying a pulling force or a pushing force to the base (4) along the axial direction of the base (4).

2. The bushing disassembly and assembly tool according to claim 1, characterized in that: The resisting mechanism comprises: at least two stoppers (5), each of the stoppers (5) being spaced apart along the circumference of the base (4), the stoppers (5) being slidably connected to the base (4) to move closer to or farther away from the central axis of the base (4), and a transmission rod (6) being provided on the stoppers (5); A transmission plate (7) is rotatably arranged inside the base (4), the rotation axis of the transmission plate (7) relative to the base (4) is parallel to the axis of the base (4), a transmission hole (8) is provided on the transmission plate (7), the transmission hole (8) is a strip hole, the length direction of the transmission hole (8) is perpendicular to the axis of the base (4), and the sliding direction of the stopper (5) relative to the base (4) is arranged at an angle to the length direction of the transmission hole (8), the distances between the two ends of the length direction of the transmission hole (8) relative to the central axis of the base (4) are different, the transmission rod (6) is located in the transmission hole (8), and the transmission rod (6) is slidably matched with the transmission hole (8); A driving member is fixedly connected to the transmission plate (7), the driving member is suitable for rotating relative to the base (4), and the rotation axis of the driving member relative to the base (4) is parallel to the axis of the base (4).

3. The bushing disassembly and assembly tool according to claim 2, characterized in that: A pair of transmission plates (7) are provided, and the pair of transmission plates (7) are respectively provided at two ends of the base (4). The driving member includes: A drive shaft (9), wherein the axis of the drive shaft (9) is parallel to the axis of the base (4), the drive shaft (9) passes through the transmission plate (7) and the base (4), a rotation-stopping structure is provided between the drive shaft (9) and the transmission plate (7), both ends of the drive shaft (9) extend to a side away from a pair of transmission plates (7), and a torque transmission portion is formed at the end of the drive shaft (9).

4. The bushing disassembly and assembly tool according to claim 2, characterized in that: A guide structure is provided between the stopper (5) and the base (4), the guide structure being adapted to guide the sliding direction of the stopper (5) relative to the base (4), the guide structure comprising: A guide hole (10) is provided in the base (4), the guide hole (10) is a strip-shaped hole, the length direction of the guide hole (10) is perpendicular to the axis of the base (4), the length direction of the guide hole (10) is parallel to the sliding direction of the stopper (5) relative to the base (4), the transmission rod (6) is located in the guide hole (10), and the transmission rod (6) is in sliding engagement with the guide hole (10).

5. The bushing disassembly and assembly tool according to any one of claims 1 to 4, characterized in that: The push-pull mechanism comprises: A rotating block (11) is arranged on the fixed seat, the rotating block (11) is adapted to be able to rotate only relative to the fixed seat, and the rotation axis of the rotating block (11) relative to the fixed seat is parallel to the axis of the base (4); A threaded rod (12) passes through the fixed seat and the rotating block (11), the axis of the threaded rod (12) is parallel to the axis of the base (4), one end of the threaded rod (12) is fixedly connected to the base (4), the threaded rod (12) is threadedly connected to the rotating block (11), and the threaded rod (12) can only slide relative to the fixed seat along its own axis.

6. The bushing disassembly and assembly tool according to claim 5, characterized in that: The mounting component (3) has a first end surface and a second end surface, the first end surface and the second end surface are distributed along the axial direction of the bushing, and the fixing seat includes: A first seat (13) is adapted to be pressed against the first end surface of the mounting component (3), and the rotating block (11) and the threaded rod (12) are arranged on the first seat (13); The second seat body is suitable for pressing against the second end surface of the mounting component (3), and the first seat body (13) and the second seat body are detachably connected.

7. The bushing disassembly and assembly tool according to claim 6, characterized in that: The first end of the first seat (13) is adapted to be pressed against the first end surface of the mounting component (3); a first avoidance space is provided at the first end of the first seat (13); the first avoidance space is adapted to avoid the connecting device and the bushing; the push-pull mechanism passes through the second end of the first seat (13) and is fixedly connected to the base (4) of the connecting device; The second base comprises: A pressing portion (15) is adapted to press against the second end surface of the mounting component (3); the pressing portion (15) is provided with a second avoidance space, and the second avoidance space is adapted to avoid the connecting device and the bushing; The connecting portion (16) is suitable for being detachably connected to the first seat body (13).

8. The bushing disassembly and assembly tool according to claim 7, characterized in that: A plug-in slot is provided on the side of the first seat body (13), the plug-in slot having a pair of side walls distributed along the axial direction of the base (4), and the connecting portion (16) is suitable for extending into the plug-in slot.

9. The bushing disassembly and assembly tool according to claim 5, characterized in that: The push-pull mechanism also includes: A rotating handle (17) is fixedly mounted on the rotating block (11).

10. The bushing disassembly and assembly tool according to any one of claims 1 to 4, characterized in that: The base (4) comprises: The first base and the second base are coaxially arranged, the first base is provided with a threaded blind hole at one end close to the second base, the second base is provided with a protrusion at one end close to the first base, the protrusion is threadedly connected to the threaded blind hole, and a pair of the resisting mechanisms are respectively provided on the first base and the second base; At least two adjusting washers are provided, and any one of the adjusting washers is suitable for being placed in the threaded blind hole, and the protrusion is suitable for abutting against the adjusting washers.

Images