Hydraulic pin shaft inserting and pulling device and using method thereof

Abstract

The invention relates to the technical field of hydraulic pin shaft inserting and pulling, in particular to a hydraulic pin shaft inserting and pulling device and a using method thereof. A pin shaft hole is formed in the side surface of a connecting frame, a mounting groove is formed in the inner wall of the pin shaft hole, a limiting gear and a rotating plate are movably arranged on the inner wall of the mounting groove, a threaded rod is movably arranged in a pin shaft, a push rod is movably arranged at the end of the threaded rod, an extrusion block is fixed to the end of the push rod, and a storage groove is formed in the portion, close to the end, of the pin shaft. The device has the beneficial effects that when a pin shaft generates outward displacement due to friction at the joint of a bearing block and a connecting frame, a limiting gear rotates clockwise at the moment, the limiting gear rotates clockwise to drive the lower end of a rotating plate to rotate anticlockwise, and the lower end of the rotating plate rotates anticlockwise; and the upper end of the rotating plate is blocked by the fixed plate, so that the phenomenon that the pin shaft displaces due to friction at the joint of the bearing block and the connecting frame is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic plug-in pin shafts, and in particular to a hydraulic plug-in pin shaft device and a use method thereof. Background Art

[0002] Pins are a type of standardized fasteners, mainly used at the hinge of two parts to form a hinge connection.

[0003] In the prior art, a Chinese invention with publication number CN114029719A discloses a hydraulic pin plugging and pulling device and a method for using the same. The hydraulic pin plugging and pulling device and the method for using the same insert the pin between the lifting device and the heavy object through a hydraulic device for connection, which is more convenient than manually installing the pin.

[0004] However, the pin part is a parallel shaft. After insertion and lifting of heavy objects, the pin will be displaced due to the friction between the heavy object and the connection, which may cause the pin to fall off and pose a risk. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic pin plugging and pulling device and a method of using the same to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic pin plugging and unplugging device, a connecting frame, a pin hole is provided on the side surface of the connecting frame, a mounting groove is provided on the inner wall of the pin hole, a limit gear and a rotating plate are movably provided on the inner wall of the mounting groove, a groove is provided on the inner surface of the connecting frame, a support plate is movably provided on the inner wall of the groove, and a load-bearing block is movably provided on the inner surface of the connecting frame;

[0007] A pin shaft has a screw rod movably arranged inside the pin shaft, a push rod movably arranged at the end of the screw rod, an extrusion block is fixed at the end of the push rod, a receiving groove is opened inside the end of the pin shaft, and a tooth block is movably arranged on the inner wall of the receiving groove.

[0008] Preferably, a suspension rope connecting roller is fixed to the upper end of the connecting frame, the pin shaft is movably arranged on the inner wall of the pin shaft hole, the diameter of the pin shaft is smaller than the diameter of the inner wall of the pin shaft hole, a slide rail is fixed to the inner wall of the pin shaft hole, a slide groove is provided on the outer surface of the pin shaft, the slide rail corresponds to the slide groove and is movably clamped, and the thickness of the slide rail is smaller than the thickness of the slide groove.

[0009] Preferably, a fan-shaped groove is opened on the inner wall of the installation groove, the fan-shaped groove is connected with the installation groove, a fixing plate is fixed on the inner wall of the fan-shaped groove, a rotating shaft is fixed at the center where the fan-shaped groove and the installation groove are connected, and the center of the rotating plate is movably sleeved on the outer surface of the rotating shaft.

[0010] Preferably, the fixed plate is located on the side of the rotating plate, the fixed plate is closer to the inner side of the connecting frame, the rotating plate is in contact with the side surface of the fixed plate when it is vertical due to gravity, and the lower end of the rotating plate corresponds to the limiting gear and is movably clamped.

[0011] Preferably, the groove is in the shape of a right-angled triangle, the upper side surface of the load-bearing block is provided with a connecting hole, the connecting hole penetrates the load-bearing block, and the lower side surface of the load-bearing block is provided with a supporting groove.

[0012] Preferably, the support plate corresponds to the support groove and is movably clamped. When the upper surface of the support plate is in contact with the upper surface of the inner wall of the support groove, the connecting hole corresponds to the pin shaft hole. When the upper surface of the support plate is in contact with the upper inclined surface of the groove, the end of the support plate will not contact the side surface of the load-bearing block.

[0013] Preferably, a through hole is provided inside the pin shaft, a threaded groove is provided on the inner wall of the through hole near the end, the through hole is communicated with the receiving groove, and the screw rod is movably disposed inside the through hole and movably clamped with the threaded groove.

[0014] Preferably, an annular groove is opened inside the end of the screw rod, an annular block is fixed to one end of the push rod, the annular groove corresponds to the annular block and is movably clamped, the extrusion block is located inside the receiving groove, and a transmission block is movably provided inside the receiving groove located on the upper side of the extrusion block.

[0015] Preferably, the tooth block is fixed to the upper surface of the transmission block, a positioning block is fixed to the side surface of the extrusion block, a positioning groove is opened on the side surface of the inner wall of the storage groove, and the positioning groove corresponds to the positioning block and is movably clamped.

[0016] A method for using the hydraulic pin plugging and unplugging device according to the above-mentioned method comprises the following steps:

[0017] Step 1: Anti-slip, use the hydraulic cylinder to completely squeeze the pin into the pin hole. Before installing the pin, turn the screw. Due to the thread fit, the screw rotates in the thread groove and drives the screw to move slowly along its axis. Since the push rod is movably connected to the screw, the screw will push the push rod to move horizontally while rotating. The movement of the push rod will drive the extrusion block to move along the positioning groove. Since the upper surface of the extrusion block is provided with an inclined surface, the lower surface of the transmission block is provided with an inclined surface, and the two inclined surfaces have the same slope but opposite inclination, the extrusion block will push the transmission block to move upward when moving. The upward movement of the transmission block will drive the gear block to move out of the storage groove. At this time, the connection The hole corresponds to the pin shaft hole, and the pin shaft is completely squeezed into the pin shaft hole by the hydraulic cylinder. Since the rotating plate is located on the side of the fixed plate and the fixed plate is closer to the inner side of the connecting frame, when the pin shaft is inserted into the pin shaft hole, the gear block moves to drive the limit gear to rotate without being blocked by the fixed plate. When the pin shaft is displaced outward due to friction at the connection between the load-bearing block and the connecting frame, the limit gear will rotate clockwise at this time, and the clockwise rotation of the limit gear will drive the lower end of the rotating plate to rotate counterclockwise. When the lower end of the rotating plate rotates counterclockwise, the upper end of the rotating plate will be blocked by the fixed plate, thereby avoiding the displacement of the pin shaft due to friction at the connection between the load-bearing block and the connecting frame.

[0018] Step 2: Support, drive the lifting rope to move the connecting frame downward so that the load-bearing block is stuck on the inner side of the connecting frame. Since the support plate is stuck in the support groove when it is laid flat due to gravity, when the connecting frame moves down on the side surface of the load-bearing block, the support plate will be blocked by the corners of the load-bearing block and flipped over. When the support plate moves down to the inside of the support groove, it will be horizontal due to gravity. At this time, drive the lifting rope to move the connecting frame slowly upward so that the upper surface of the support plate is completely fitted with the upper surface of the inner wall of the support groove. The support plate will support the load-bearing block, and the connecting hole will correspond to the pin shaft hole. Since the pin shaft is smaller than the diameter of the pin shaft hole, the support plate will play a major supporting role for the load-bearing block, thereby avoiding the pin shaft being the only force point of the load-bearing block, thereby causing the pin shaft to break and bend.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The connecting hole is aligned with the pin shaft hole, and the pin shaft is completely squeezed into the pin shaft hole by the hydraulic cylinder. When the pin shaft is inserted into the pin shaft hole, the gear block moves to drive the limit gear to rotate without being blocked by the fixed plate. When the pin shaft is displaced outward due to friction at the connection between the load-bearing block and the connecting frame, the limit gear will rotate clockwise at this time, and the clockwise rotation of the limit gear will drive the lower end of the rotating plate to rotate counterclockwise. When the lower end of the rotating plate rotates counterclockwise, the upper end of the rotating plate will be blocked by the fixed plate, thereby avoiding the displacement of the pin shaft due to friction at the connection between the load-bearing block and the connecting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 It is an exploded schematic diagram of the overall structure of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention;

[0024] Figure 4 It is a schematic cross-sectional view of the structure of the limit assembly of the present invention;

[0025] Figure 5 It is a schematic diagram of the explosion of the limit assembly structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the pin assembly structure of the present invention;

[0027] Figure 7 It is a schematic cross-sectional view of the pin assembly structure of the present invention;

[0028] Figure 8 It is a schematic diagram of the cross-section explosion of the pin assembly structure of the present invention;

[0029] Fig. 9 It is a schematic cross-sectional view of the storage tank structure of the present invention;

[0030] Fig.10 It is a schematic diagram of the cross-section explosion of the screw assembly structure of the present invention.

[0031] In the figure: 1. connecting frame; 2. hanging rope connecting roller; 3. pin shaft; 4. screw rod; 5. load-bearing block; 6. support plate; 7. connecting hole; 8. support groove; 9. limit gear; 10. transmission block; 11. extrusion block; 12. groove; 13. slide rail; 14. pin shaft hole; 15. fan-shaped groove; 16. fixed plate; 17. rotating plate; 18. installation groove; 19. slide groove; 20. gear block; 21. push rod; 22. through hole; 23. threaded groove; 24. storage groove; 25. positioning groove; 26. annular groove; 27. annular block; 28. positioning block. DETAILED DESCRIPTION

[0032] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figures 1 to 10 The present invention provides a technical solution: a hydraulic pin plugging and unplugging device and a method for using the same.

[0034] Embodiment 1, a hydraulic plug-in pin device and a method of using the same, comprising: a pin hole 14 is provided on the side surface of a connecting frame 1, a mounting groove 18 is provided on the inner wall of the pin hole 14, a limit gear 9 and a rotating plate 17 are movably provided on the inner wall of the mounting groove 18, the limit gear 9 rotates clockwise, and the clockwise rotation of the limit gear 9 will drive the lower end of the rotating plate 17 to rotate counterclockwise, and the lower end of the rotating plate 17 rotates counterclockwise, and the upper end of the rotating plate 17 will be blocked by a fixed plate 16, a groove 12 is provided on the inner surface of the connecting frame 1, a support plate 6 is movably provided on the inner wall of the groove 12, and a load-bearing block 5 is movably provided on the inner surface of the connecting frame 1, because the pin shaft 3 is smaller than the diameter of the pin shaft hole 14, the support plate 6 will play a major supporting role for the load-bearing block 5, thereby preventing the pin shaft 3 from being the only force bearing point of the load-bearing block 5, thereby causing the pin shaft 3 to break and bend.

[0035] A screw rod 4 is movably provided inside the pin shaft 3, and a push rod 21 is movably provided at the end of the screw rod 4. An extrusion block 11 is fixed to the end of the push rod 21. A receiving groove 24 is opened inside the end of the pin shaft 3, and a tooth block 20 is movably provided on the inner wall of the receiving groove 24. When the pin shaft 3 is displaced outward due to friction at the connection between the load-bearing block 5 and the connecting frame 1, the limit gear 9 will rotate clockwise at this time, and the clockwise rotation of the limit gear 9 will drive the lower end of the rotating plate 17 to rotate counterclockwise, and the lower end of the rotating plate 17 will rotate counterclockwise, and the upper end of the rotating plate 17 will be blocked by the fixed plate 16, thereby avoiding the displacement of the pin shaft 3 due to friction at the connection between the load-bearing block 5 and the connecting frame 1.

[0036] On the basis of Example 1, in order to achieve anti-displacement of the pin shaft 3 in the pin shaft hole 14, a rope connecting roller 2 is fixed to the upper end of the connecting frame 1, and the pin shaft 3 is movably arranged on the inner wall of the pin shaft hole 14. The diameter of the pin shaft 3 is smaller than the diameter of the inner wall of the pin shaft hole 14. A slide rail 13 is fixed to the inner wall of the pin shaft hole 14. A slide groove 19 is opened on the outer surface of the pin shaft 3. The slide rail 13 corresponds to the slide groove 19 and is movably clamped. The thickness of the slide rail 13 is smaller than the thickness of the slide groove 19. Since the pin shaft 3 is smaller than the diameter of the pin shaft hole 14, the support plate 6 will play a major supporting role for the load-bearing block 5.

[0037] A fan-shaped groove 15 is provided on the inner wall of the mounting groove 18, and the fan-shaped groove 15 is connected with the mounting groove 18. A fixing plate 16 is fixed on the inner wall of the fan-shaped groove 15, and a rotating shaft is fixed at the center where the fan-shaped groove 15 and the mounting groove 18 are connected. The center of the rotating plate 17 is movably sleeved on the outer surface of the rotating shaft, and the fixing plate 16 is located on the side of the rotating plate 17, and the fixing plate 16 is closer to the inner side of the connecting frame 1. When the rotating plate 17 is vertical due to gravity, it fits with the side surface of the fixing plate 16. The lower end of the rotating plate 17 corresponds to the limiting gear 9 and is movably clamped. The limiting gear 9 rotates clockwise, and the clockwise rotation of the limiting gear 9 will drive the lower end of the rotating plate 17 to rotate counterclockwise, and the lower end of the rotating plate 17 rotates counterclockwise, and the upper end of the rotating plate 17 will be blocked by the fixing plate 16, thereby avoiding the displacement of the pin shaft 3 due to the friction at the connection between the load-bearing block 5 and the connecting frame 1.

[0038] The groove 12 is in the shape of a right-angled triangle, and a connecting hole 7 is provided on the upper side surface of the load-bearing block 5, and the connecting hole 7 penetrates the load-bearing block 5. A supporting groove 8 is provided on the lower side surface of the load-bearing block 5, and the supporting plate 6 corresponds to the supporting groove 8 and is movably clamped. When the upper surface of the support plate 6 is in contact with the upper surface of the inner wall of the support groove 8, the connecting hole 7 corresponds to the pin shaft hole 14, and when the upper surface of the support plate 6 is in contact with the upper inclined surface of the groove 12, the end of the support plate 6 will not contact the side surface of the load-bearing block 5. When the connecting frame 1 moves down on the side surface of the load-bearing block 5, the support plate 6 will be blocked by the corners of the load-bearing block 5 and flipped over. When the support plate 6 moves down to the inside of the support groove 8, due to the horizontal gravity, the lifting rope is driven to slowly move the connecting frame 1 up, so that the upper surface of the support plate 6 is completely in contact with the upper surface of the inner wall of the support groove 8, and the support plate 6 will support the load-bearing block 5.

[0039] A through hole 22 is provided inside the pin shaft 3, a thread groove 23 is provided on the inner wall of the through hole 22 near the end, the through hole 22 is communicated with the receiving groove 24, the screw rod 4 is movably arranged inside the through hole 22 and is movably clamped with the thread groove 23, an annular groove 26 is provided inside the end of the screw rod 4, an annular block 27 is fixed at one end of the push rod 21, the annular groove 26 corresponds to the annular block 27 and is movably clamped, the extrusion block 11 is located inside the receiving groove 24, a transmission block 10 is movably provided inside the receiving groove 24 located on the upper side of the extrusion block 11, the gear block 20 is fixed to the upper surface of the transmission block 10, and a positioning block 28 is fixed to the side surface of the extrusion block 11. A positioning groove 25 is provided on the inner wall side surface of the storage groove 24, and the positioning groove 25 corresponds to the positioning block 28 and is movably arranged. Since the push rod 21 is movably connected to the screw rod 4, the screw rod 4 will push the push rod 21 to move horizontally while rotating. The movement of the push rod 21 will drive the extrusion block 11 to move along the direction of the positioning groove 25. Since an inclined surface is provided on the upper surface of the extrusion block 11 and an inclined surface is provided on the lower surface of the transmission block 10, and the two inclined surfaces have the same slope but opposite inclinations, the extrusion block 11 will push the transmission block 10 to move upward when moving, and the upward movement of the transmission block 10 will drive the gear block 20 to move out of the storage groove 24.

[0040] The present invention also discloses a method for using a hydraulic pin insertion and extraction device, comprising the following steps:

[0041] Step 1: Anti-slip, use the hydraulic cylinder to completely squeeze the pin shaft 3 into the pin shaft hole 14. Before installing the pin shaft, rotate the screw rod 4. Due to the thread matching, the rotation of the screw rod 4 in the thread groove 23 will drive the screw rod 4 to move slowly along its axial direction. Since the push rod 21 is movably connected to the screw rod 4, the screw rod 4 will push the push rod 21 to move horizontally while rotating. The movement of the push rod 21 will drive the extrusion block 11 to move along the direction of the positioning groove 25. Since the upper surface of the extrusion block 11 is provided with an inclined surface, the lower surface of the transmission block 10 is provided with an inclined surface, and the two inclined surfaces have the same slope but opposite inclinations, the extrusion block 11 will push the transmission block 10 to move upward when moving, and the upward movement of the transmission block 10 will drive the gear block 20 to move out of the storage groove 24. At this time, the connecting hole 7 Corresponding to the pin shaft hole 14, the pin shaft 3 is completely squeezed into the pin shaft hole 14 by the hydraulic cylinder. Since the rotating plate 17 is located on the side of the fixed plate 16, and the fixed plate 16 is closer to the inner side of the connecting frame 1, when the pin shaft 3 is inserted into the pin shaft hole 14, the tooth block 20 moves to drive the limit gear 9 to rotate without being blocked by the fixed plate 16. When the connection between the load-bearing block 5 and the connecting frame 1 causes the pin shaft 3 to be displaced outward due to friction, the limit gear 9 will rotate clockwise at this time, and the clockwise rotation of the limit gear 9 will drive the lower end of the rotating plate 17 to rotate counterclockwise, and the lower end of the rotating plate 17 will rotate counterclockwise, and the upper end of the rotating plate 17 will be blocked by the fixed plate 16, thereby avoiding the displacement of the pin shaft 3 due to the friction at the connection between the load-bearing block 5 and the connecting frame 1.

[0042] Step 2: Support, drive the lifting rope to move the connecting frame 1 downward, so that the load-bearing block 5 is stuck on the inner side of the connecting frame 1. Since the support plate 6 is stuck in the support groove 8 when it is laid flat due to gravity, when the connecting frame 1 moves down on the side surface of the load-bearing block 5, the support plate 6 will be blocked by the corners of the load-bearing block 5 and flipped over. When the support plate 6 moves down to the inside of the support groove 8, it will be horizontal due to gravity. At this time, the lifting rope is driven to move the connecting frame 1 slowly upward, so that the upper surface of the support plate 6 is completely in contact with the upper surface of the inner wall of the support groove 8. The support plate 6 will support the load-bearing block 5. At the same time, the connecting hole 7 will also correspond to the pin shaft hole 14. Since the pin shaft 3 is smaller than the diameter of the pin shaft hole 14, the support plate 6 will play a major supporting role for the load-bearing block 5, thereby avoiding the pin shaft 3 being the only force point of the load-bearing block 5, thereby causing the pin shaft 3 to break and bend.

[0043] In actual use, the connecting hole 7 is aligned with the pin hole 14, and the pin 3 is completely squeezed into the pin hole 14 by the hydraulic cylinder. Before installing the pin, the screw rod 4 is rotated. Due to the thread matching, the screw rod 4 rotates in the thread groove 23, which will drive the screw rod 4 to move slowly along its axial direction. Since the push rod 21 is movably connected to the screw rod 4, the screw rod 4 will push the push rod 21 to move horizontally while rotating. The movement of the push rod 21 will drive the extrusion block 11 to move along the direction of the positioning groove 25. Since the upper surface of the extrusion block 11 is provided with an inclined surface, the lower surface of the transmission block 10 is provided with an inclined surface, and the two inclined surfaces have the same slope but are inclined in opposite directions, the extrusion block 11 will push the transmission block 10 to move upward when moving, and the upward movement of the transmission block 10 will drive the gear block 20 to move out of the storage groove 24.

[0044] At this time, the connecting hole 7 is aligned with the pin hole 14, and the pin 3 is completely squeezed into the pin hole 14 by the hydraulic cylinder. Since the rotating plate 17 is located on the side of the fixed plate 16 and the fixed plate 16 is closer to the inner side of the connecting frame 1, when the pin 3 is inserted into the pin hole 14, the tooth block 20 moves to drive the limit gear 9 to rotate without being blocked by the fixed plate 16. When the bearing block 5 and the connecting frame 1 are connected, the friction causes the pin 3 to be displaced outward, and the limit gear 9 will rotate clockwise at this time, and the clockwise rotation of the limit gear 9 will drive the lower end of the rotating plate 17 to rotate counterclockwise, and the lower end of the rotating plate 17 will rotate counterclockwise, and the upper end of the rotating plate 17 will be blocked by the fixed plate 16, thereby avoiding the displacement of the pin 3 due to the friction at the connection between the bearing block 5 and the connecting frame 1.

[0045] The lifting rope is driven to move the connecting frame 1 downward, so that the load-bearing block 5 is stuck inside the connecting frame 1. Since the support plate 6 is stuck in the support groove 8 when it is laid flat due to gravity, when the connecting frame 1 moves down on the side surface of the load-bearing block 5, the support plate 6 will be blocked by the corner of the load-bearing block 5 and flipped over. When the support plate 6 moves down to the inside of the support groove 8, the gravity is horizontal at this time. At this time, the lifting rope is driven to slowly move the connecting frame 1 upward, so that the upper surface of the support plate 6 is completely in contact with the upper surface of the inner wall of the support groove 8, and the support plate 6 will support the load-bearing block 5.

[0046] At the same time, the connecting hole 7 will also correspond to the pin shaft hole 14. Since the pin shaft 3 is smaller than the diameter of the pin shaft hole 14, the support plate 6 will play a major supporting role for the load-bearing block 5, preventing the pin shaft 3 from being the only stress point of the load-bearing block 5, thereby preventing the pin shaft 3 from breaking and bending.

[0047] Although the above describes the illustrative specific implementation methods of the present application so that technicians in this technical field can understand the present application, the present application is not limited to the scope of the specific implementation methods. For ordinary technicians in this technical field, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations using the concept of the present application are protected.

Claims

1. A hydraulic pin insertion and extraction device, characterized in that: include: A connecting frame (1), wherein a pin hole (14) is provided on a side surface of the connecting frame (1), an installation groove (18) is provided on an inner wall of the pin hole (14), a limit gear (9) and a rotating plate (17) are movably provided on the inner wall of the installation groove (18), a groove (12) is provided on the inner surface of the connecting frame (1), a support plate (6) is movably provided on the inner wall of the groove (12), and a load-bearing block (5) is movably provided on the inner surface of the connecting frame (1); A pin shaft (3) is provided with a screw rod (4) movably inside the pin shaft (3), a push rod (21) is movably provided at the end of the screw rod (4), an extrusion block (11) is fixed at the end of the push rod (21), a receiving groove (24) is provided inside the end of the pin shaft (3), and a tooth block (20) is movably provided on the inner wall of the receiving groove (24).

2. A hydraulic pin plugging and pulling device according to claim 1, characterized in that: A rope connecting roller (2) is fixed to the upper end of the connecting frame (1); the pin shaft (3) is movably arranged on the inner wall of the pin shaft hole (14); the diameter of the pin shaft (3) is smaller than the diameter of the inner wall of the pin shaft hole (14); a slide rail (13) is fixed to the inner wall of the pin shaft hole (14); a slide groove (19) is provided on the outer surface of the pin shaft (3); the slide rail (13) corresponds to the slide groove (19) and is movably arranged; the thickness of the slide rail (13) is smaller than the thickness of the slide groove (19).

3. A hydraulic pin plugging and pulling device according to claim 2, characterized in that: The inner wall of the installation groove (18) is provided with a fan-shaped groove (15), the fan-shaped groove (15) is connected with the installation groove (18), a fixing plate (16) is fixed on the inner wall of the fan-shaped groove (15), a rotating shaft is fixed at the center where the fan-shaped groove (15) and the installation groove (18) are connected, and the center of the rotating plate (17) is movably sleeved on the outer surface of the rotating shaft.

4. A hydraulic pin plugging and pulling device according to claim 3, characterized in that: The fixed plate (16) is located on the side of the rotating plate (17). The fixed plate (16) is closer to the inner side of the connecting frame (1). When the rotating plate (17) is vertical due to gravity, it fits with the side surface of the fixed plate (16). The lower end of the rotating plate (17) corresponds to the limiting gear (9) and is movably clamped.

5. A hydraulic pin plugging and pulling device according to claim 4, characterized in that: The groove (12) is in the shape of a right-angled triangle. The upper side surface of the load-bearing block (5) is provided with a connecting hole (7), the connecting hole (7) penetrates the load-bearing block (5), and the lower side surface of the load-bearing block (5) is provided with a supporting groove (8).

6. A hydraulic pin plugging and pulling device according to claim 5, characterized in that: The support plate (6) corresponds to the support groove (8) and is movably arranged; when the upper surface of the support plate (6) is in contact with the upper surface of the inner wall of the support groove (8), the connecting hole (7) corresponds to the pin shaft hole (14); when the upper surface of the support plate (6) is in contact with the upper inclined surface of the groove (12), the end of the support plate (6) will not contact the side surface of the load-bearing block (5).

7. A hydraulic pin insertion and extraction device according to claim 6, characterized in that: The pin shaft (3) is provided with a through hole (22) inside, the through hole (22) is provided with a thread groove (23) on the inner wall near the end, the through hole (22) is connected with the receiving groove (24), and the screw rod (4) is movably arranged inside the through hole (22) and movably clamped with the thread groove (23).

8. A hydraulic pin insertion and extraction device according to claim 7, characterized in that: An annular groove (26) is provided inside the end of the screw rod (4); an annular block (27) is fixed to one end of the push rod (21); the annular groove (26) corresponds to the annular block (27) and is movably arranged; the extrusion block (11) is located inside the receiving groove (24); and a transmission block (10) is movably arranged inside the receiving groove (24) located on the upper side of the extrusion block (11).

9. A hydraulic pin plugging and pulling device according to claim 8, characterized in that: The tooth block (20) is fixed to the upper surface of the transmission block (10), a positioning block (28) is fixed to the side surface of the extrusion block (11), and a positioning groove (25) is provided on the side surface of the inner wall of the storage groove (24), and the positioning groove (25) corresponds to the positioning block (28) and is movably arranged.

10. A method for using the hydraulic pin plugging and pulling device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: Anti-slip, use the hydraulic cylinder to completely squeeze the pin shaft (3) into the pin shaft hole (14). Before installing the pin shaft, rotate the screw rod (4). Due to the thread matching, the screw rod (4) rotates in the thread groove (23) to drive the screw rod (4) to move slowly along its axial direction. Since the push rod (21) is movably connected to the screw rod (4), the screw rod (4) rotates and moves while supporting the push rod (21) to move horizontally. The movement of the push rod (21) drives the extrusion block (11) to move along the positioning groove (25). Since the upper surface of the extrusion block (11) is provided with an inclined surface, and the lower surface of the transmission block (10) is provided with an inclined surface, and the two inclined surfaces have the same slope but are inclined in opposite directions, the extrusion block (11) will support the transmission block (10) to move upward when moving. The upward movement of the transmission block (10) will drive the gear block (20) to move out of the storage groove (24). At this time, the connecting hole (7) and the pin shaft are connected. The rotating plate (17) is located on the side of the fixed plate (16) and the fixed plate (16) is closer to the inner side of the connecting frame (1). Therefore, when the pin shaft (3) is inserted into the pin shaft hole (14), the gear block (20) moves to drive the limit gear (9) to rotate without being blocked by the fixed plate (16). When the pin shaft (3) is displaced outwards due to friction at the connection between the load-bearing block (5) and the connecting frame (1), the limit gear (9) rotates clockwise at this time, and the clockwise rotation of the limit gear (9) drives the lower end of the rotating plate (17) to rotate counterclockwise. When the lower end of the rotating plate (17) rotates counterclockwise, the upper end of the rotating plate (17) is blocked by the fixed plate (16), thereby avoiding the displacement of the pin shaft (3) due to friction at the connection between the load-bearing block (5) and the connecting frame (1). Step 2: Support, drive the suspension rope to move the connecting frame (1) downward, so that the load-bearing block (5) is stuck inside the connecting frame (1). Since the support plate (6) is stuck in the support groove (8) when it is flat due to gravity, when the connecting frame (1) moves down on the side surface of the load-bearing block (5), the support plate (6) will be blocked by the corner of the load-bearing block (5) and flipped. When the support plate (6) moves down to the inside of the support groove (8), it will be horizontal due to gravity. At this time, the suspension rope is driven to make the connecting frame (1) ) is slowly moved upward so that the upper surface of the support plate (6) is completely in contact with the upper surface of the inner wall of the support groove (8). The support plate (6) will support the load-bearing block (5). At the same time, the connecting hole (7) will correspond to the pin hole (14). Since the pin (3) is smaller than the diameter of the pin hole (14), the support plate (6) will play a major supporting role for the load-bearing block (5), thereby preventing the pin (3) from being the only stress point of the load-bearing block (5) and causing the pin (3) to break and bend.

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