A disassembly device for a piston rod and a piston

Abstract

The application discloses a piston rod and piston disassembling device, and belongs to the technical field of brake cylinders. The piston rod and piston disassembling device comprises a rack, a rotating seat arranged on the rack and configured to bear a piston and a piston rod and drive the piston rod to rotate, a pressing mechanism arranged on one side of the rotating seat to press the piston on the rotating seat, a traction mechanism arranged on the rack and configured to have a traction direction being the direction in which the piston rod is separated from the piston, and a pin passing mechanism arranged on a movable part of the traction mechanism and configured to have a pin on the piston rod matched with a pinhole, wherein, when the piston rod is rotated to match the pinhole and the pin, the pin passing mechanism drives the pin to be embedded in the pinhole, so that the piston rod is pulled away from the piston when the traction mechanism is actuated. The piston rod and piston disassembling device provided by the application can conveniently realize the disassembly of the piston and the piston rod.

Description

Technical Field

[0001] This application belongs to the field of brake cylinder technology, and in particular relates to a device for disassembling a piston rod and a piston. Background Technology

[0002] The brake cylinder is a key component of the railway freight car braking system. During vehicle braking, compressed air drives the piston in the cylinder to extend, applying braking force to the brake shoes. Therefore, after prolonged operation, brake cylinders are prone to deformation, wear, and corrosion, requiring regular maintenance.

[0003] During brake cylinder maintenance, components such as piston rods, pistons, cylinder blocks, and front covers that show wear, corrosion, or deformation often require targeted repair or replacement. When replacing or repairing a piston or piston rod separately, it is necessary to disassemble the piston and piston rod; since pistons and piston rods often use an interference fit, disassembly is very inconvenient and can easily damage the piston or piston rod. Summary of the Invention

[0004] This application provides a piston rod and piston disassembly device, aiming to at least partially solve the technical problems of difficult piston operation and piston disassembly, which easily damages the piston or piston rod. Therefore,

[0005] This application provides a piston rod and piston disassembly device, comprising:

[0006] frame;

[0007] A rotating seat is mounted on the frame and is configured to support a piston and a piston rod, and drive the piston rod to rotate.

[0008] A clamping mechanism is provided on one side of the rotating seat to clamp the piston onto the rotating seat;

[0009] A traction mechanism is mounted on the frame, and the traction direction of the traction mechanism is configured such that the piston rod disengages from the piston.

[0010] A pin-threading mechanism is provided on the movable part of the traction mechanism, and a pin is provided on the pin-threading mechanism that is adapted to the pin hole on the piston rod. When the piston rod rotates to the point where the pin hole and the pin are matched and aligned, the pin-threading mechanism drives the pin to be embedded in the pin hole so as to pull the piston rod away from the piston when the traction mechanism is activated.

[0011] In some embodiments, the rotating seat includes:

[0012] The base is rotatably mounted on the frame;

[0013] A drive mechanism is connected to the base body and drives the base body to rotate.

[0014] In some embodiments, the drive mechanism includes:

[0015] A drive motor is mounted on the frame, and a drive gear is connected to the shaft of the drive motor;

[0016] A driven gear is connected to the base and meshes with the driving gear so that when the driving motor drives the driving gear to rotate, the driven gear drives the rotating base to rotate, thereby aligning the pin hole with the pin.

[0017] In some embodiments, the clamping mechanism includes:

[0018] A clamping bracket is mounted on the frame.

[0019] A clamping arm is pivotally connected to the clamping bracket in the middle, and a clamping part is provided at the first end of the clamping arm;

[0020] A first push-pull assembly is disposed on the frame and is connected to the second end of the clamping arm to push the clamping arm to deflect, thereby causing the clamping part to press or release the piston.

[0021] In some embodiments, the first push-pull component includes:

[0022] The first drive cylinder is mounted on the frame;

[0023] A wedge block is connected to the cylinder rod of the first drive cylinder. The wedge block is provided with a pushing inclined surface, which abuts against the second end of the clamping arm. The pushing inclined surface is configured to push the clamping arm to deflect when it slides relative to the second end of the clamping arm.

[0024] In some embodiments, the first push-pull assembly further includes a rotating wheel rotatably connected to the second end of the clamping arm, and the rotating wheel rolls against the push-up inclined surface.

[0025] In some embodiments, the traction mechanism includes

[0026] Guide cylinder, mounted on the frame;

[0027] A guide rod is slidably embedded in the guide cylinder, and the guide rod is connected to the pin insertion mechanism;

[0028] A second push-pull assembly is disposed on the frame and is connected to the guide rod to drive the guide rod to move relative to the guide cylinder.

[0029] In some embodiments, the second push-pull component includes:

[0030] A track plate is connected to the guide rod, and a track groove is formed on the track plate;

[0031] A second drive cylinder is mounted on the frame. A sliding pin is connected to the cylinder rod of the second drive cylinder. The sliding pin is slidably embedded in the track groove. The direction in which the second drive cylinder drives the sliding pin to move and the direction in which the guide cylinder guides are obliquely intersecting the direction in which the track groove guides, so that when the second drive cylinder drives the sliding pin to move in the track groove, it drives the track plate and the guide rod to move relative to the guide cylinder.

[0032] In some embodiments, the pin-feeding mechanism includes:

[0033] A pin-connected platform is attached to the guide rod.

[0034] A pin-connecting bracket is installed on the pin-connecting platform;

[0035] The pin arm is slidably mounted on the pin bracket, and the pin is mounted on the pin arm.

[0036] In some embodiments, the pin-threading mechanism further includes a third push-pull assembly disposed on the pin-threading platform and connected to the pin-threading arm.

[0037] In some embodiments, the third push-pull assembly includes:

[0038] The third drive cylinder is mounted on the pin-through platform;

[0039] A sliding member is connected to the cylinder rod of the third drive cylinder. The sliding member is slidably disposed on the pin arm, and the moving direction of the pin arm relative to the pin bracket and the moving direction of the sliding member driven by the third drive cylinder are respectively oblique to the moving direction of the sliding member relative to the pin arm.

[0040] In some embodiments, the pin support is provided with a guide groove, and the pin arm is provided with a guide boss, the guide boss being slidably disposed in the guide groove.

[0041] In some embodiments, the pin-feeding mechanism further includes a roller that is rotatably disposed between the guide boss and the guide groove.

[0042] In some embodiments, the end of the pin is provided with a ball bearing.

[0043] In some embodiments, the piston rod and piston disassembly device further includes:

[0044] A limit switch is disposed on the pin insertion mechanism, and the limit switch is configured to detect the depth of the pin in the pin hole;

[0045] The controller is connected to the limit switch, the rotating seat, and the pin insertion mechanism.

[0046] The embodiments of this application have at least the following beneficial effects:

[0047] The piston rod and piston disassembly device provided in this application includes a frame, a rotating seat, a clamping mechanism, a traction mechanism, and a pin insertion mechanism. The frame serves as the mounting base, supporting the rotating seat, clamping mechanism, traction mechanism, and pin insertion mechanism. The rotating seat supports and drives the piston and piston rod to rotate, adjusting the position of the pin hole on the piston rod so that it aligns with the pin on the pin insertion mechanism, allowing the pin to be accurately inserted into the pin hole on the piston rod. The clamping mechanism presses the piston against the rotating seat. The traction mechanism is connected to the pin insertion mechanism, thereby using the frame as a base to pull the pin insertion mechanism, pin, and piston rod, thus pulling the piston rod away from the piston, conveniently and efficiently disassembling the piston and piston rod. Furthermore, the clamping mechanism, in conjunction with clamping the piston, and the traction mechanism, pin insertion mechanism, pin, and pin hole, in conjunction with pulling the piston rod, can ensure the stability and smoothness of the traction force application process with a relatively stable contact force application mode, smoothly disassembling the piston, reducing the risk of repeated operations caused by unstable force application connection state, and reducing the risk of damage to the piston rod and piston. Attached Figure Description

[0048] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0049] Figure 1 A three-dimensional structural schematic diagram of the piston and piston rod disassembly device in an embodiment of this application is shown;

[0050] Figure 2 It shows Figure 1 A three-dimensional structural diagram of the piston and piston rod separation device from another angle;

[0051] Figure 3 It shows Figure 1 A top view of the piston and piston rod disassembly device;

[0052] Figure 4 It shows Figure 2 A magnified view of a portion of the image;

[0053] Figure 5 It shows Figure 1 A three-dimensional structural diagram of the clamping mechanism in the piston and piston rod disassembly device.

[0054] Figure 6 It shows Figure 1 A schematic diagram of the traction mechanism in the piston and piston rod disassembly device;

[0055] Figure 7 It shows Figure 6 DD sectional view;

[0056] Figure 8 It shows Figure 1 A three-dimensional structural diagram of the pin-threading mechanism in the piston and piston rod disassembly device.

[0057] Figure 9 It shows Figure 8 A top view of the pin-threading mechanism;

[0058] Figure 10 It shows Figure 3 Enlarged view of part B in the image;

[0059] Figure 11 It shows Figure 10 CC section view;

[0060] Figure 12 It shows Figure 8 A partial perspective view of the pin-and-pin mechanism in the image;

[0061] Figure 13 It shows Figure 1 The control principle block diagram of the piston and piston rod separation device in the process.

[0062] Figure label:

[0063] 1-Rack,

[0064] 2-Rotating seat, 21-Seat body, 22-Drive mechanism, 221-Drive motor, 222-Driving gear, 223-Driven gear

[0065] 3-Clamping mechanism, 31-Clamping bracket, 32-Clamping arm, 321-Clamping part, 321a-Boss, 33-First push-pull assembly, 331-First drive cylinder, 332-Wedge block, 332a-Pushing inclined surface, 333-Rotating wheel;

[0066] 4-Traction mechanism, 41-Guide cylinder, 42-Guide rod, 43-Second push-pull assembly, 431-Rail plate, 431a-Rail groove, 431b-Locking groove, 432-Second drive cylinder, 432a-Sliding pin;

[0067] 5-Pin mechanism, 51-Pin, 51a-Ball, 51b-Ball cover, 51c-Rolling groove, 52-Pin platform, 53-Pin bracket, 531-Sliding window, 532-Guide groove, 54-Pin arm, 541-Sliding part, 542-Extension arm, 543-Guide boss, 544-Adaptive inclined surface, 545-Guide plane, 55-Third push-pull assembly, 551-Third drive cylinder, 552-Sliding part, 56-Roller;

[0068] 61-Piston, 62-Piston rod, 62a-Pin hole;

[0069] 7-Controller, 71-Limit switch. Detailed Implementation

[0070] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0071] Furthermore, reference numerals and / or reference letters may be repeated in different examples in this application. Such repetition is for simplification and clarity purposes and does not in itself indicate a relationship between the various embodiments and / or settings discussed. In addition, this application provides examples of various specific processes and materials; however, those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0072] This application is described below with reference to the accompanying drawings and specific embodiments:

[0073] During the maintenance of railway vehicle brake cylinders, components such as piston rods, pistons, cylinder bodies, and front covers that show wear, corrosion, or deformation often require targeted repair or replacement. When replacing or repairing a piston or piston rod individually, it is necessary to disassemble the piston and piston rod. Since pistons and piston rods often use interference fits, disassembly is very inconvenient and can easily damage the piston or piston rod.

[0074] Therefore, this application provides a piston rod and piston disassembly device, which aims to improve the convenience of disassembling the piston and piston rod to a certain extent and reduce the risk of damage.

[0075] See Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 and Figure 10In some embodiments, the piston rod and piston disassembly device can fix the piston and piston rod respectively, and pull the piston and piston rod to move relative to each other to overcome the interference fit resistance, pull the piston rod and piston apart, and realize the disassembly of the piston rod and piston.

[0076] The device for disassembling the piston rod and piston may include: a frame 1, a rotating seat 2, a clamping mechanism 3, a traction mechanism 4, and a pin insertion mechanism 5.

[0077] The frame 1 serves as the mounting base for the entire disassembly device. The rotating seat 2, the clamping mechanism 3, and the traction mechanism 4 can be mounted on the frame 1. Simultaneously, the frame 1 forms a unified force-applying base to ensure the stability of the cooperation between the rotating seat 2, the clamping mechanism 3, the traction mechanism 4, and the pin-feeding mechanism 5, reducing the risk of misalignment caused by defects such as deformation of the force-applying base.

[0078] The rotating seat 2 serves as a support structure for the piston 61 and piston rod 62, and can drive the piston rod 62 to rotate around its central axis. The piston 61 can be mounted on the rotating seat 2, and the piston rod 62 can also be mounted on the rotating seat 2, so that when the rotating seat 2 rotates, the piston 61 and piston rod 62 will rotate with the rotating seat 2, causing the position of the pin hole on the piston rod 62 to change accordingly.

[0079] The clamping mechanism 3 is a structure for clamping the piston 61. The clamping mechanism 3 can be disposed adjacent to one side of the rotating seat 3 to clamp the piston 61 onto the rotating seat. Typically, the piston 61 can be clamped by the clamping mechanism 3 after the piston 61 and the piston rod 62 have been adjusted into position along with the rotating seat 2.

[0080] The traction mechanism 4 is used to connect to and pull the piston rod 62, and the traction direction of the traction mechanism 4 can be configured to the direction in which the piston rod 62 disengages from the piston 61; that is, the traction mechanism 4 can provide a driving force for the piston rod 62 to disengage from the piston 61.

[0081] The pin-connecting mechanism 5 is a structure for connecting and fixing the piston rod 62. Specifically, a pin 51 can be configured on the pin-connecting mechanism 5. By operating the pin-connecting mechanism 5, the pin 51 can be inserted into the pin hole 62a on the piston rod 62, thereby establishing a stable connection between the pin-connecting mechanism 5 and the piston rod 62. The pin-connecting mechanism 5 can also be connected to the movable part of the traction mechanism 4, so that the pin-connecting mechanism 5 can move together with the piston rod 62 under the drive of the traction mechanism 4 until the piston rod 62 disengages from the piston 61.

[0082] It is worth noting that when the piston rod 62 rotates to the point where the pin hole 62a and the pin 51 are matched and aligned, the pin insertion mechanism 5 can be activated to drive the pin 51 to be embedded in the pin hole 62a, thereby establishing a connection between the pin insertion mechanism 5 and the piston rod 62; then the traction mechanism 4 can be operated to indirectly pull the piston rod 62 away from the piston 61 through the pin insertion mechanism 5.

[0083] When it is necessary to disassemble the piston 61 and piston rod 62 in their assembled state, the piston 61 can be placed on the rotating seat 2. Then, the rotating seat 2 rotates, and the piston 61 and piston rod 62 rotate, adjusting the position of the pin hole 62a until the pin hole 62a matches and aligns with the pin 51. Then, the clamping mechanism 3 clamps the piston 61, and the pin insertion mechanism 5 drives the pin 51 to insert into the pin hole 62a. Then, the traction mechanism 4 pulls the pin insertion mechanism 5 and the piston rod 62 to move in the direction of disengaging from the piston 61 until the piston rod 62 is completely disengaged from the piston 61. Then, the pin insertion mechanism 5 drives the pin to disengage from the pin hole 62a, and the clamping mechanism 3 releases the clamping state on the piston 61.

[0084] See Figure 2 , Figure 3 , Figure 4 and Figure 10 In some embodiments, to achieve the functions of bearing and rotating, the rotating seat 2 may include a seat body 21 and a drive mechanism 22. The seat body 21 is rotatably mounted on the seat body 21 along a set axis, and the drive mechanism 22 is connected to the seat body 21 to drive the seat body 21 to rotate.

[0085] Generally, a mounting part for the matching piston 61 can be provided on the seat 21 to stably mount the piston 61. The position of the pivot of the seat 21 can also be coordinated so that the piston rod 62 is coaxially arranged with the pivot of the seat 21, so that when the seat 21 rotates, the piston rod 62 can rotate in place, stably and smoothly adjusting the position of the pin hole 62a and ensuring reliable alignment with the pin 51.

[0086] In some embodiments, the drive mechanism 22 may be a motor and gear transmission mechanism, which drives the base 21 to rotate via the motor driving the gear transmission mechanism.

[0087] The drive mechanism 22 may include a drive motor 221, a driving gear 222, and a driven gear 223. The drive motor 221 may be mounted on the frame 1. The driving gear 222 is connected to the shaft of the drive motor 221, and when the drive motor 221 is activated, it drives the driving gear 222 to rotate. The driven gear 223 is connected to the base 21, and the driven gear 223 meshes with the driving gear 222. When the drive motor 221 rotates, it drives the base 21 to rotate through the driving gear 222 and the driven gear 223.

[0088] Generally, the driven gear 223 can be coaxially arranged with the base 21, that is, the rotation axis center of the driven gear 223 and the base 21 is consistent, so that the rotation pace of the driven gear 223 and the base 21 is consistent, thereby enabling high-precision control of the rotation amplitude of the base 21.

[0089] In some embodiments, the driven gear 223 may be configured as a hollow gear ring, which is sleeved on the base 21.

[0090] In some embodiments, the rotational speed of the driven gear 223 can be controlled by adjusting the gear ratio of the driving gear 222 and the driven gear 223, thus preventing excessive rotational speed of the seat 21 from affecting the alignment accuracy and efficiency of the pin hole 62a and the pin 51. Alternatively, a reduction gear set or other reduction mechanism can be configured and connected between the driving gear 222 and the driven gear 223 to achieve speed reduction transmission.

[0091] See Figure 1 , Figure 2 , Figure 3 and Figure 5 In some embodiments, the pressing mechanism 3 may be mounted on the frame 1. After the piston rod 62 on the rotating seat 2 rotates into position, the piston 61 and the rotating seat 2 are pressed onto the frame 1 based on the frame 1.

[0092] The clamping mechanism 3 can be a lever-based mechanism, specifically including: a clamping bracket 31, a clamping arm 32, and a first push-pull assembly 33. The clamping bracket 1 serves as a supporting base and acts as a lever fulcrum; the middle part of the clamping arm 32 is pivotally connected to the clamping bracket 1, thus forming a lever in the lever principle structure; the first push-pull assembly 33 is connected to the second end of the clamping arm 32, and the first end of the clamping arm 32 is provided with a clamping part 321 that matches and contacts the piston 61. Thus, the first push-pull assembly 33 can push the clamping arm 32 to deflect it, thereby pressing the clamping part 321 towards or away from the piston 61, to achieve the operation of clamping and releasing the piston 61.

[0093] In some embodiments, the deflection direction of the clamping arm 32 can be set to be in the vertical plane, and the first push-pull assembly 33 can push the end of the clamping arm 32 to generate displacement in the vertical direction.

[0094] In some embodiments, the first push-pull assembly 33 may include a first drive cylinder 331 and the wedge block 332. The first drive cylinder 331 may be disposed on the frame 1. The wedge block 332 is connected to the first drive cylinder 331 and disposed on the frame 1. The wedge block 332 is provided with a pushing inclined surface 332a. The pushing inclined surface 332a abuts against the second end of the clamping arm 32, and the pushing inclined surface 332a is configured to push the clamping arm 32 to deflect when the pushing inclined surface slides relative to the second end of the clamping arm 32.

[0095] Generally, the first drive cylinder 331 can be configured to extend and retract horizontally, and the pushing slope 332a can be configured to have a unidirectional linear change in the vertical direction, that is, to smoothly increase or decrease in the vertical direction. Thus, during the horizontal movement of the wedge block 332 under the drive of the first drive cylinder 331, it can push the clamping arm 32 to deflect through the pushing slope 332a.

[0096] In some embodiments, in order to improve the smoothness of the pushing state between the pushing ramp 332a and the pressing arm 32, the first push-pull assembly 33 may further include a rotating wheel 333.

[0097] The rotating wheel 333 is rotatably connected to the second end of the pressing arm 32, and the rotating wheel 333 rolls against the pushing inclined surface 332a, thereby improving the smoothness of the pushing state between the pushing inclined surface 332a and the pressing arm 32 through the rotation of the rotating wheel 333.

[0098] Generally, the rotating wheel 333 can rise or fall in a straight line along the pushing inclined surface 332a, and the trajectory direction of the rotating wheel 333 on the horizontal plane can be parallel to the moving trajectory of the wedge block 332, thereby improving the pushing efficiency.

[0099] In some embodiments, the first push-pull assembly 33 may include a first drive cylinder 331, and the tail end of the cylinder body of the first drive cylinder 331 may be rotatably connected to the frame 1. The lever end of the first drive cylinder 331 is rotatably connected to the second end of the clamping arm 32, so that the clamping arm 32 may be deflected directly by the first drive cylinder 331, and the arcuate movement trajectory of the second end of the clamping arm 32 may be adapted by the rotatable connection of the first drive cylinder 331.

[0100] In some embodiments, the pressing part 321 may include a boss 321a protruding from the first end of the pressing arm 32. Generally, the boss 321a may protrude radially from the pressing arm 32, so that the pressing arm 32 can stably press the piston 61.

[0101] In some embodiments, a buffer pad may be provided on the pressing part 321 as a contact part between the pressing part 321 and the piston 61, so as to avoid the pressing part 321 directly abutting against the piston 61 and reduce the risk of scratching the piston 61.

[0102] See Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 In some embodiments, the traction mechanism 4 may include a guide cylinder 41, a guide rod 42, and a second push-pull assembly 43. The guide cylinder 41 is disposed on the frame 1, the guide rod 42 is slidably embedded within the guide cylinder 41, and the second push-pull assembly 43 is disposed on the frame 1 and connected to the guide rod 42 to drive the guide cylinder 41 to move. The pin-feeding mechanism 5 may be connected to the guide rod 42, so that the pin-feeding mechanism 5 can move with the guide rod 42 to pull the piston rod 62 away from the piston 61.

[0103] It is worth noting that the sliding connection between the guide cylinder 41 and the guide rod 42 can maintain the stability of the moving direction of the pin insertion mechanism 5, thereby ensuring the reliability of the alignment between the pin 51 on the pin insertion mechanism 5 and the pin hole 62a.

[0104] In some embodiments, the second push-pull assembly 43 may include: a track plate 431 and a second drive cylinder 432; the track plate 431 is connected to the guide rod 42 and has a track groove 431a; the second drive cylinder 432 is disposed on the frame 1 and a sliding pin 432a is connected to the cylinder rod of the second drive cylinder 432, and the sliding pin 432a is slidably embedded in the track groove 431a.

[0105] The direction in which the second drive cylinder 432 drives the sliding pin 432a to move is oblique to the guiding direction of the guide cylinder 41 and the guiding direction of the track groove 431a. Thus, when the second drive cylinder 432 is activated, the second sliding pin 432a moves back and forth along a straight line along the cylinder rod of the second drive cylinder 432, pushing and pulling the side wall of the track groove 431a, driving the track plate 431 and the guide rod 42 to move together along the guiding direction of the guide cylinder 41, thereby pulling the pin-through mechanism 5 to move, thereby pulling the piston rod 62 away from the piston 61.

[0106] In some embodiments, the guiding direction of the guide cylinder 41 forms a 45-degree angle with the guiding direction of the track groove 431a, and the driving direction of the second driving cylinder 432 is orthogonal to the driving direction of the guide cylinder 41, and the driving direction of the second driving cylinder 432 also forms a 45-degree angle with the guiding direction of the track groove 431a.

[0107] Generally, the guiding direction of the guide cylinder 41 can be set to vertical, and the driving direction of the second drive cylinder 432 can be set to horizontal.

[0108] In some embodiments, locking grooves 431b are also provided at both ends of the track groove 431a. When the sliding pin 432a is embedded in the locking groove 431b, the track plate 431 is in a locked state, and the guide rod 42 is relatively stationary relative to the guide cylinder 41.

[0109] Generally, the guide rod 42 can be set vertically, the locking groove 431b can be set as a horizontal groove, and the guiding direction of the track groove 431a is oblique to the vertical direction.

[0110] In some embodiments, the number of guide cylinders 41 and guide rods 42 can be set to multiple. Multiple guide cylinders 41 and guide rods 42 can form a frame structure with the frame 1 and the pin-threading mechanism 5, thereby improving the structural stability of the traction structure 4 and ensuring the positional accuracy and stability of the pin-threading mechanism 5.

[0111] Generally, the guide cylinder 41 and the guide rod 42 can be configured as four.

[0112] In some embodiments, in order to improve the reliability of the sliding pin 432a driving the track plate 431, the number of track plates 431 can be set to multiple pieces, and the track grooves 431a on the multiple track plates 431 are arranged in parallel. The sliding pin 432a can be slidably embedded in the track grooves 431a on the multiple track plates 431, thereby forming multiple sliding fulcrums to ensure the stability of the moving posture of the sliding pin 432a.

[0113] Generally, the number of track plates 431 can be set to two or three.

[0114] In some embodiments, the second push-pull assembly 43 may also be a second drive cylinder 432, with the cylinder body and cylinder rod of the second drive cylinder 432 connected to the frame 1 and the guide rod 42 respectively, and the driving direction of the second drive cylinder 432 may be consistent with the guiding direction of the guide cylinder 41, so that the guide rod 42 can be directly driven to reciprocate through the second drive cylinder 432.

[0115] See Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 9 , Figure 10 , Figure 11 and Figure 12 In some embodiments, the pin-threading mechanism 5 is used to push or pull the pin 51 into or out of the pin hole 62a. For this purpose, the pin-threading mechanism 5 may include: a pin-threading platform 52, a pin-threading bracket 53, and a pin-threading arm 54.

[0116] The pin-threading platform 52 serves as the connection base between the pin-threading mechanism 5 and the guide rod 42. The pin-threading bracket 53 can be mounted on the pin-threading platform 52, the pin-threading arm 54 is slidably mounted on the pin-threading bracket 53, and the pin 51 can be mounted on the pin-threading arm 54. Thus, the pin-threading platform 52, the pin-threading bracket 53, and the pin-threading arm 54 can form a stable sliding drive structure, stably driving the pin 51 to reciprocate, thereby achieving precise insertion and disengagement from the pin hole 62a.

[0117] In some embodiments, the number of pin holes 62a on the piston rod 62 is multiple. In order to improve the reliability and stability of applying force to the piston rod 62, the number of pin arms 54 can be set to be the same as the number of pin holes 62a. Correspondingly, the number of pins 51 is also set to be multiple, consistent with the number of pin holes 62a.

[0118] Generally, there are two pin holes 62a, and there can also be two pins 51.

[0119] When performing the pin insertion or pin removal operation, the pin insertion arm 54 can be driven to move, thereby causing the pin 51 to reciprocate along a set trajectory and insert into or disengage from the pin hole 62a.

[0120] In some embodiments, in order to improve the ease with which the pin 51 can be inserted into or removed from the pin hole 62a, the pin insertion mechanism 5 may further include a third push-pull component 55, which is disposed on the pin insertion platform 52 and connected to the pin insertion arm 54, thereby driving the pin insertion arm 54 to move through the third push-pull component 55.

[0121] In some embodiments, the third push-pull assembly 55 includes a third drive cylinder 551 and a slider 552. The second drive cylinder 551 is disposed on the pin-threading platform 52, and the slider 552 is connected to the cylinder rod of the third drive cylinder 551, so that the slider 552 can reciprocate along a straight line trajectory under the drive of the third drive cylinder 551. The slider 552 can slide along the pin-threading arm 54, and the direction of movement of the pin-threading arm 54 relative to the pin-threading bracket 53 and the direction of movement of the slider 552 driven by the third drive cylinder 551 are oblique to the direction of movement of the slider 552 relative to the pin-threading arm 54, so that the pin-threading arm 54 can be pushed and pulled during the movement of the slider 552.

[0122] It is worth noting that the moving direction of the pin-threading arm 54 relative to the pin-threading bracket 53 and the moving direction of the sliding member 552 driven by the third drive cylinder 551 are oblique to the moving direction of the sliding member 552 relative to the pin-threading arm 54, so that the pushing and pulling direction of the third drive cylinder 551 can have a large angle with the direction of the pressing arm 54, thereby reducing the volume of the entire pin-threading mechanism 5 to a certain extent.

[0123] In some embodiments, in order to ensure the reliability of the sliding connection between the slider 552 and the pin arm 54, a limiting groove can be formed on the pin arm 54, and the slider 552 can be slidably embedded in the limiting groove; and the slider 552 can be restricted from leaving the limiting groove by planning the opening specifications of the limiting groove.

[0124] Generally, the guiding direction of the limiting slide groove can be directly intersected with the pushing and pulling direction of the third drive cylinder 551 and the sliding direction of the pin arm 54.

[0125] In some embodiments, the pushing and pulling direction of the third drive cylinder 551 and the moving direction of the pin arm 54 are orthogonal, and the guiding direction of the limiting slide groove forms an angle of 45 degrees with the pushing and pulling direction of the third drive cylinder 551 and the moving direction of the pin arm 54.

[0126] In some embodiments, the pin arm 54 has a guide plane 545 that abuts against the sliding member 552, the sliding member 552 has a corresponding plane, and the angle between the pushing / pull direction of the third drive cylinder and the guide plane 545 is four or five degrees.

[0127] In some embodiments, a sliding window 531 may be provided in the pin-threading bracket 53, and the pin-threading arm 54 may be slidably embedded in the sliding window 531, thereby using the sliding window 531 to constrain the swing amplitude of the pin-threading arm 54 in the non-sliding direction, maintain the sliding posture, and maintain the pin-threading accuracy of the pin-threading arm 54.

[0128] In some embodiments, the pin support 53 is a ring frame, and the sliding window 531 is formed on the side wall of the pin support 53. The pin arm 54 includes a sliding part 541 and an extension arm 542. The sliding part 541 is slidably embedded in the sliding window 531, and one end of the extension arm 542 is connected to the sliding part 541, and the other end is connected to the pin 51.

[0129] In some embodiments, the sliding part 541 may be provided with a ring frame or a hollow part.

[0130] In some embodiments, the pin support 53 is configured as a polygonal ring frame, and the sliding window 531 is formed on two connecting outer peripheral walls of the pin support 53.

[0131] In some embodiments, in order to ensure the sliding stability of the pin arm 54, a guide groove 532 can be provided on the pin bracket 53, and a guide boss 543 can be provided on the pin arm 54. The guide boss 543 is slidably disposed in the guide groove 532, that is, the sliding engagement structure of the guide boss 543 and the guide groove 532 maintains the stability of the moving direction of the pin arm 54.

[0132] In some embodiments, in order to improve the sliding smoothness of the guide boss 543 and the guide groove 532, the pin-feeding mechanism 5 may further include a roller 56, which is rotatably disposed between the guide boss 543 and the guide groove 532. The rolling of the roller 56 can reduce the active friction between the guide boss 543 and the guide groove 532, thereby improving the sliding smoothness of the guide boss 543 and the guide groove 532.

[0133] In some embodiments, the guide groove 532 is formed on the inner surface of the sliding window 531.

[0134] In some embodiments, the number of guide bosses 543 and guide grooves 532 may be multiple.

[0135] In some embodiments, the piston rod 62 has a radially through hole forming two pin holes 62a. For this purpose, two coaxially arranged pins 51 can be provided on the pin-feeding mechanism 5, and the two pin-feeding arms 54 are used to move the two pin holes 62a closer or further apart, achieving pin insertion and disengagement. Correspondingly, the sliding member 552 can simultaneously push and pull the two pin-feeding arms 54.

[0136] In some embodiments, an elastic tensioning member, such as a spring, may be connected between the two pin-piercing arms 54 to continuously pull the two pin-piercing arms 54 closer together to maintain the pin-piercing force tendency; and the sliding member 552 is configured to abut against the two pin-piercing arms 54 only when the two pin-piercing arms 54 are pushed away, so that when the two pin-piercing arms 54 are opened during the pin removal or pin-piercing preparation stage, the third drive cylinder 551 drives the sliding member 552 to push the two pin-piercing arms 54 away, and during pin-piercing, the third drive cylinder 552 moves away from the two pin-piercing arms 54, so that the two pin-piercing arms 54 move closer to each other under the action of the elastic tensioning member until the pin-piercing operation is completed.

[0137] In some embodiments, in order to reduce the contact friction between the pin 51 and the piston rod 62 and reduce the risk of scratches, the end of the pin 51 is provided with a ball bearing 51a to improve the smoothness of the contact between the piston rod 62 and the pin 51.

[0138] In some embodiments, a rolling groove 51c may be formed at the end of the pin 51, and the ball 51a is rolled within the rolling groove and locked by the ball cover 51b, thereby locking the ball 51a inside.

[0139] See Figure 13 In some embodiments, to improve the automation level of the piston rod and piston disassembly device, the piston rod and piston disassembly device may further include: a controller 7 and a limit switch 71; the controller 7 is connected to the limit switch 71, the rotating seat 2, the clamping mechanism 3, the traction mechanism 4 and the pin insertion mechanism 5 respectively, so as to coordinately control the operation of the rotating seat 2, the clamping mechanism 3, the traction mechanism 4 and the pin insertion mechanism 5 based on the signal of the limit switch 71.

[0140] The limit switch 71 can be installed on the pin-feeding arm 54 of the pin-feeding mechanism 5 to detect the distance from the pin-feeding arm 54 to the piston rod 62, thereby monitoring the depth of the pin 51 in the pin hole and determining whether the pin 51 is embedded in the pin hole 62a.

[0141] During the pin insertion operation, the controller 7 acts as the control center, controlling the traction mechanism 4 to move to the height of the pin hole 62a. Then, the rotating seat 2 is controlled to rotate the piston rod 62 to a set position. Next, the pressing mechanism 2 is controlled to press the piston 61, thereby positioning the piston rod 62. Then, the pin insertion mechanism 5 is controlled to abut the pin 51 against the piston rod 62 and further insert it into the pin hole 62a. After the pin 51 is fully inserted into the pin hole 62a, the piston rod 62 triggers the limit switch 71, thereby causing the controller 7 to stop the rotating seat 2 and the pin insertion mechanism 5.

[0142] In some embodiments, the rotating seat 2, the pressing mechanism 3, the traction mechanism 4, and the pin-threading mechanism 5 can be operated independently, and the pin-threading and pin-removing operations can be performed by the operator in a semi-automatic manner.

[0143] The embodiments of this application have at least the following beneficial effects:

[0144] The piston rod and piston disassembly device provided in this application includes a frame, a rotating seat, a clamping mechanism, a traction mechanism, and a pin insertion mechanism. The frame serves as the mounting base, supporting the rotating seat, clamping mechanism, traction mechanism, and pin insertion mechanism. The rotating seat supports and drives the piston and piston rod to rotate, adjusting the position of the pin hole on the piston rod so that it aligns with the pin on the pin insertion mechanism, allowing the pin to be accurately inserted into the pin hole on the piston rod. The clamping mechanism presses the piston against the rotating seat. The traction mechanism is connected to the pin insertion mechanism, thereby using the frame as a base to pull the pin insertion mechanism, pin, and piston rod, thus pulling the piston rod away from the piston, conveniently and efficiently disassembling the piston and piston rod. Furthermore, the clamping mechanism, in conjunction with clamping the piston, and the traction mechanism, pin insertion mechanism, pin, and pin hole, in conjunction with pulling the piston rod, can ensure the stability and smoothness of the traction force application process with a relatively stable contact force application mode, smoothly disassembling the piston, reducing the risk of repeated operations caused by unstable force application connection state, and reducing the risk of damage to the piston rod and piston.

[0145] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0146] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this 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. Therefore, they should not be construed as limitations on this application.

[0147] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0148] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean 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 according to the specific circumstances.

[0149] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0150] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0151] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0152] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for disassembling a piston rod and a piston, characterized in that, include: frame; A rotating seat, mounted on the frame, is used to support the piston and piston rod and drive the piston rod to rotate; A clamping mechanism is provided on one side of the rotating seat to clamp the piston onto the rotating seat; A traction mechanism is mounted on the frame, and the traction direction of the traction mechanism is configured such that the piston rod disengages from the piston. A pin-threading mechanism is provided on the movable part of the traction mechanism, and a pin is provided on the pin-threading mechanism that is adapted to the pin hole on the piston rod. When the piston rod rotates to the point where the pin hole and the pin are matched and aligned, the pin-threading mechanism drives the pin to be embedded in the pin hole so as to pull the piston rod away from the piston when the traction mechanism is activated.

2. The piston rod and piston disassembly device as described in claim 1, characterized in that, The rotating seat includes: The base is rotatably mounted on the frame; A drive mechanism is connected to the base body and drives the base body to rotate.

3. The piston rod and piston disassembly device as described in claim 2, characterized in that, The drive mechanism includes: A drive motor is mounted on the frame, and a drive gear is connected to the shaft of the drive motor; A driven gear is connected to the base and meshes with the driving gear so that when the drive motor drives the driving gear to rotate, the driven gear drives the rotating base to rotate, thereby aligning the pin hole with the pin.

4. The piston rod and piston disassembly device as described in claim 1, characterized in that, The clamping mechanism includes: A clamping bracket is mounted on the frame. A clamping arm is pivotally connected to the clamping bracket in the middle, and a clamping part is provided at the first end of the clamping arm; A first push-pull assembly is disposed on the frame and is connected to the second end of the clamping arm to push the clamping arm to deflect, thereby causing the clamping part to press or release the piston.

5. The piston rod and piston disassembly device as described in claim 4, characterized in that, The first push-pull assembly includes: The first drive cylinder is mounted on the frame; A wedge block is connected to the cylinder rod of the first drive cylinder. The wedge block is provided with a pushing inclined surface, which abuts against the second end of the clamping arm. The pushing inclined surface is configured to push the clamping arm to deflect when it slides relative to the second end of the clamping arm.

6. The piston rod and piston disassembly device as described in claim 5, characterized in that, The first push-pull assembly further includes a rotating wheel, which is rotatably connected to the second end of the clamping arm and rolls against the push-top inclined surface.

7. The piston rod and piston disassembly device as described in claim 1, characterized in that, The traction mechanism includes Guide cylinder, mounted on the frame; A guide rod is slidably embedded in the guide cylinder, and the guide rod is connected to the pin insertion mechanism; A second push-pull assembly is disposed on the frame and is connected to the guide rod to drive the guide rod to move relative to the guide cylinder.

8. The piston rod and piston disassembly device as described in claim 7, characterized in that, The second push-pull assembly includes: A track plate is connected to the guide rod, and a track groove is formed on the track plate; A second drive cylinder is mounted on the frame. A sliding pin is connected to the cylinder rod of the second drive cylinder. The sliding pin is slidably embedded in the track groove. The direction in which the second drive cylinder drives the sliding pin to move and the direction in which the guide cylinder guides are obliquely intersecting the direction in which the track groove guides, so that when the second drive cylinder drives the sliding pin to move in the track groove, it drives the track plate and the guide rod to move relative to the guide cylinder.

9. The piston rod and piston disassembly device as described in claim 7, characterized in that, The transshipment mechanism includes: A pin-connected platform is attached to the guide rod. A pin-connecting bracket is installed on the pin-connecting platform; The pin arm is slidably mounted on the pin bracket, and the pin is mounted on the pin arm.

10. The piston rod and piston disassembly device as described in claim 9, characterized in that, The pin-threading mechanism further includes a third push-pull assembly, which is disposed on the pin-threading platform and connected to the pin-threading arm.

11. The piston rod and piston disassembly device as described in claim 10, characterized in that, The third push-pull assembly includes: The third drive cylinder is mounted on the pin-through platform; A sliding member is connected to the cylinder rod of the third drive cylinder. The sliding member is slidably disposed on the pin arm, and the direction of movement of the pin arm relative to the pin bracket and the direction of movement of the sliding member driven by the third drive cylinder are oblique to the direction of movement of the sliding member relative to the pin arm.

12. The piston rod and piston disassembly device as described in claim 9, characterized in that, The pin support is provided with a guide groove, and the pin arm is provided with a guide boss, which is slidably disposed in the guide groove.

13. The piston rod and piston disassembly device as described in claim 12, characterized in that, The pin-feeding mechanism also includes a roller, which is rotatably disposed between the guide boss and the guide groove.

14. The piston rod and piston disassembly device as described in claim 1, characterized in that, The end of the pin is provided with a ball bearing.

15. The piston rod and piston disassembly device as described in any one of claims 1 to 14, characterized in that, The piston rod and piston disassembly device also includes: A limit switch is disposed on the pin insertion mechanism, and the limit switch is configured to detect the depth of the pin in the pin hole; The controller is connected to the limit switch, the rotating seat, and the pin insertion mechanism.

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