Hydraulic puller

Abstract

The invention relates to the technical field of hydraulic pullers, and discloses a hydraulic puller which comprises a hydraulic oil cylinder, a pressurizing rod is arranged above the hydraulic oil cylinder, an external thread is arranged below the outer surface of the hydraulic oil cylinder, the outer surface of the external thread is connected with a threaded sleeve through a thread, and the lower end face of the hydraulic oil cylinder is fixedly connected with a push rod. Six mounting seats are uniformly mounted on the outer surface of the threaded sleeve, and a bottom plate is fixedly mounted on one side of the outer surface of each of three of the mounting seats; according to the hydraulic puller, the problems that a pulling claw of the hydraulic puller is of a hook-shaped structure, the contact area between a pulling hook of the pulling claw and an accessory is small, and meanwhile the angle of the pulling claw cannot be fixed are solved, the angle of a movable plate can be fixed by arranging a rotary limiting mechanism, the contact area is enlarged by arranging a pressing and stretching mechanism, and the stability during disassembly is improved; accessories are prevented from being scratched or the touch plate is prevented from being popped out along with increase of force.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic pullers, in particular to a hydraulic puller. Background Art

[0002] The hydraulic puller moves forward directly with the hydraulic starter rod, so the push rod itself does not rotate. The hook seat can be adjusted forward and backward directly with the thread. When operating, just swing the handle back and forth slightly, the hydraulic starter rod moves forward, the hook moves back accordingly, and the object is pulled out. When maintenance personnel are performing maintenance work, they often encounter the disassembly of bearings, sealing sleeves, couplings and other accessories, which require the use of hydraulic pullers for disassembly.

[0003] Prior art patent publication number CN2584342Y discloses an integrated hydraulic puller, which is composed of a hydraulic cylinder, a hook group and a pressurizing handle. The hydraulic cylinder is assembled with the hook group. A push rod, a pressurizing rod, a fixed bracket, a pressure reducing valve and a handle sleeve are arranged on the hydraulic cylinder. One end of the handle sleeve is connected to the fixed bracket, and the other end is connected to the pressurizing rod. The outer sleeve of the hydraulic cylinder is provided with a thread. The hook group includes a hook, a movable connecting rod and a hook seat. The hook is connected to the hook seat through the movable connecting rod, and the hook seat is connected to the hydraulic cylinder through a thread. The integrated hydraulic puller has a compact structure, is easy to operate and saves effort. The parts can be disassembled by swinging the pressurizing handle slightly by hand, and are not restricted by the site or location.

[0004] However, the claw of the above-mentioned hydraulic puller is a hook-shaped structure, and the contact area between the hook of the claw and the accessory is relatively small. At the same time, the angle of the claw cannot be fixed. As the force increases, it is easy to scratch the accessory or the claw pops out, causing damage to the accessory or personal injury. Therefore, it does not meet the existing needs. We have proposed a hydraulic puller. Summary of the invention

[0005] The object of the present invention is to provide a hydraulic puller to solve the problem proposed in the above-mentioned background technology that the pulling claw of the above-mentioned hydraulic puller is a hook-shaped structure, the contact area between the pulling hook of the pulling claw and the accessory is relatively small, and the angle of the pulling claw cannot be fixed. As the force increases, it is easy to scratch the accessory or the pulling claw pops out, thereby causing damage to the accessory or personal injury.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a hydraulic puller comprises a hydraulic cylinder, a pressure rod is arranged above the hydraulic cylinder, an external thread is arranged below the outer surface of the hydraulic cylinder, the outer surface of the external thread is connected with a threaded sleeve through a thread, a push rod is fixedly connected to the lower end surface of the hydraulic cylinder, six mounting seats are evenly installed on the outer surface of the threaded sleeve, three of the mounting seats are fixedly installed with a bottom plate on one side of the outer surface, a baffle is arranged on the other side of the outer surface of the mounting seat, a cross bar is arranged on the side opposite to the outer surface of the bottom plate and the baffle, a movable plate is sleeved on the outer surface of the cross bar, the movable plate is movably connected with the bottom plate through a rotation limiting mechanism, the rotation limiting mechanism comprises a circular plate and a fixed column, the outer surface of the fixed column is fixedly sleeved with a rotating disk, a pressing and extending mechanism is arranged on the lower end surface of the movable plate, the pressing and extending mechanism comprises a touch plate, the upper end surface of the touch plate is provided with a groove, a pressure plate is arranged on the inner side of the groove, and limiting plates are arranged on both sides of the outer surface of the touch plate.

[0007] Preferably, a threaded column is provided on one side of the outer surface of the cross bar, the circular plate is fixedly connected to the outer surface of the base plate through a supporting column, a fixing plate is provided at one end of the circular plate, the circular plate and the fixing plate are an integral structure, a strip groove is provided on one side of the outer surface of the fixing plate, and a movable cavity is provided on the inner side of the strip groove.

[0008] Preferably, a spring A is fixedly installed on the inner wall of the movable cavity, and the other end of the spring A is fixedly connected to a strip plate, an opening is provided above one side of the outer surface of the strip plate, a circular groove is provided on one side of the opening, an insertion rod is provided on the inner side of the circular groove, a spring B is sleeved on one side of the outer surface of the insertion rod, and the inner side of the strip groove of the insertion rod is movable.

[0009] Preferably, the middle sleeve of the insertion rod is provided with a limiting ring, the size of the limiting ring is larger than the aperture of the opening, one end of the spring B is fixedly connected to the outer surface of the limiting ring, the other end of the spring B is fixedly connected to the inner wall of the circular groove, and two positioning holes are provided on one side of the inner wall of the movable cavity, and the insertion rod is adapted to the positioning holes.

[0010] Preferably, the lower end surface of the insertion rod is fixedly connected with an arc plate, the lower end surface of the arc plate is evenly installed with a plurality of saw teeth B, the outer surface of the turntable is evenly installed with a plurality of saw teeth A, and the saw teeth A are adapted to the saw teeth B, a fixing ring is provided on the outer periphery of one side of the outer surface of the fixing column, a sleeve is provided on the outer surface of the fixing ring, an annular groove A is provided below one side of the outer surface of the base plate, an annular groove B is provided on the inner wall of the annular groove A, the fixing ring is clamped into the inner side of the annular groove, and the sleeve is clamped into the inner side of the annular groove B.

[0011] Preferably, a through hole B is provided inside the fixing column, four slots are evenly provided on the inner wall of the through hole B, four plug blocks are evenly installed on the outer surface of one side of the cross bar, the plug blocks are matched with the slots, and the cross bar is matched with the round hole.

[0012] Preferably, a threaded hole is provided on one side of the outer surface of the mounting seat, a through hole C is provided through the upper and lower outer surfaces of the baffle, the cross bar is adapted to the through hole C, a through hole D is provided below the bottom plate, four strip grooves are provided on the inner wall of the through hole D, and the plug block is adapted to the strip grooves.

[0013] Preferably, the upper end surface of the touch plate is fixedly connected to the lower end surface of the movable plate, the pressure plate and the groove are movably connected through four springs C, trapezoidal blocks are fixedly installed below both sides of the outer surface of the pressure plate, storage grooves are provided on both sides of the inner wall of the groove, and transverse grooves are provided above both sides of the outer surface of the touch plate, and the transverse grooves are connected to the storage grooves through through holes A.

[0014] Preferably, a moving rod is provided on the inner side of the through hole A, a spring D is sleeved on the outer surface of the moving rod, one end of the moving rod is fixedly connected to a triangular block, the other end of the moving rod is fixedly connected to a moving plate, a square groove is provided on the upper end surface of the moving plate, springs E are installed on the four end corners of the upper end surface of the square groove, and the upper end surface of the spring E is fixedly connected to a lifting block.

[0015] Preferably, the movable plate is adapted to the transverse groove, the triangular block is adapted to the receiving groove, the two ends of the spring D are fixedly connected to the inner wall of the through hole A, the limit plate is fixedly connected to the outer surface of the movable plate, the upper end surface of the pressure plate is fixedly connected to the rubber pad A by an adhesive, and the upper end surface of the lifting block is fixedly connected to the rubber pad B by an adhesive.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a rotation limit mechanism, and the cross bar is passed through the through hole D, and the plug block is passed through the strip groove, so that one end of the cross bar is stuck in the inner side of the round hole, and the plug block is inserted into the inner side of the slot, so that the cross bar can drive the turntable to rotate while rotating. When the movable plate is installed, the baffle is placed on the other side of the movable plate, and a nut is screwed on the outer side of the threaded column at one end of the cross bar, and then a bolt is screwed on the inner side of the threaded hole to fix the baffle. First, the three plug rods are pulled outward to make the plug rod leave the inner side of one of the positioning holes, and then the plug rod is moved upward to drive the strip plate to move upward. The strip plate moves upward, thereby driving the arc plate The movable plate is moved downwards, driving the sawtooth B to leave the outer side of the sawtooth A, releasing the limit on the turntable. When the upper part of the pressing and extending mechanism is in contact and stable with the part to be disassembled, the angle of the movable plate needs to be fixed, and then the insertion rod is pulled to move the insertion rod downwards, and the other end of the insertion rod is inserted into the positioning hole below. At the same time, the strip plate is moved downwards, driving the arc plate downwards, driving the sawtooth B to be stuck into the inner side of the sawtooth A, limiting the turntable, thereby limiting the crossbar, limiting the angle of the movable plate, improving stability, and preventing the accessories from being scratched or the touch panel from being ejected as the force increases, thereby causing damage to the accessories or personal injury.

[0018] 2. The present invention is provided with a pressing and extending mechanism. When the upper end face of the pressing plate contacts the lower end face of the part to be disassembled, the pressing plate is held by gravity, the spring C is compressed, the pressing plate moves downward, driving the trapezoidal block to move downward, the inclined surface of the trapezoidal block contacts the triangular block 1008, pushing the triangular block to both sides, and the triangular block moves outward, driving the moving rod and the moving plate to move outward at the same time. When the moving plate extends out of the horizontal groove, the lifting block moves upward under the action of the spring E, and the upper end face of the lifting block fits tightly with the lower end face of the part to be disassembled, thereby expanding the contact area and improving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the rotation limiting mechanism of the present invention;

[0021] Figure 3 A top view of the present invention as a whole;

[0022] Figure 4 It is a structural schematic diagram of the rotation limiting mechanism of the present invention;

[0023] Figure 5 It is a schematic diagram of the partial structure of the fixing plate of the present invention;

[0024] Figure 6 It is a partial structural schematic diagram of the fixed column of the present invention;

[0025] Figure 7It is a structural schematic diagram of the pressing and extending mechanism of the present invention;

[0026] Figure 8 is a cross-sectional view of a touch panel of the present invention;

[0027] Fig. 9 It is a schematic diagram of the local structure of the movable plate of the present invention.

[0028] In the figure: 1, pressure rod; 2, hydraulic cylinder; 3, mounting seat; 4, rotation limit mechanism; 401, turntable; 402, sawtooth A; 403, arc plate; 404, strip plate; 405, plug rod; 406, opening; 407, fixed plate; 408, round plate; 409, strip groove; 410, sawtooth B; 411, spring A; 412, movable cavity; 413, positioning hole; 414, round groove; 415, spring B; 416, fixed column; 417, slot; 418, round hole; 5, movable plate; 6, external thread; 7, Push rod; 8. threaded sleeve; 9. baffle; 10. push-out mechanism; 1001. touch plate; 1002. limit plate; 1003. groove; 1004. pressure plate; 1005. spring C; 1006. trapezoidal block; 1007. lifting block; 1008. triangular block; 1009. moving rod; 1010. storage slot; 1011. spring D; 1012. through hole A; 1013. horizontal slot; 1014. moving plate; 1015. square slot; 1016. spring E; 11. bottom plate; 12. horizontal bar; 13. plug-in block. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] See also Figures 1 to 9, an embodiment of the present invention: a hydraulic puller, including a hydraulic cylinder 2, a pressure rod 1 is arranged above the hydraulic cylinder 2, an external thread 6 is arranged below the outer surface of the hydraulic cylinder 2, the outer surface of the external thread 6 is connected with a threaded sleeve 8 through a thread, the lower end surface of the hydraulic cylinder 2 is fixedly connected with a push rod 7, and the outer surface of the threaded sleeve 8 is evenly installed with six mounting seats 3, wherein one side of the outer surface of three mounting seats 3 is fixedly installed with a bottom plate 11, and the other side of the outer surface of the mounting seat 3 is provided with a baffle 9, and the side opposite to the outer surface of the bottom plate 11 and the baffle 9 is provided with a transverse The outer surfaces of the rod 12 and the cross bar 12 are sleeved with a movable plate 5, and the movable plate 5 is movably connected to the bottom plate 11 through a rotation limiting mechanism 4, and the rotation limiting mechanism 4 includes a circular plate 408 and a fixed column 416, and the outer surface of the fixed column 416 is fixedly sleeved with a turntable 401, and the lower end surface of the movable plate 5 is provided with a pressing and extending mechanism 10, and the pressing and extending mechanism 10 includes a touch plate 1001, and the upper end surface of the touch plate 1001 is provided with a groove 1003, and the inner side of the groove 1003 is provided with a pressure plate 1004, and the outer surfaces of the touch plate 1001 are provided with limiting plates 1002.

[0031] Furthermore, a threaded column is provided on one side of the outer surface of the cross bar 12, and the circular plate 408 is fixedly connected to the outer surface of the base plate 11 through a supporting column. A fixing plate 407 is provided at one end of the circular plate 408. The circular plate 408 and the fixing plate 407 are an integral structure. A strip groove 409 is provided on one side of the outer surface of the fixing plate 407, and a movable cavity 412 is provided on the inner side of the strip groove 409, thereby improving the stability of the circular plate 408 and the stability of the connection between the circular plate 408 and the fixing plate 407.

[0032] A spring A411 is fixedly installed on the inner wall of the movable cavity 412, and the other end of the spring A411 is fixedly connected to the strip plate 404. An opening 406 is provided above one side of the outer surface of the strip plate 404, and a circular groove 414 is provided on one side of the opening 406. A plug rod 405 is provided on the inner side of the circular groove 414. A spring B415 is sleeved on one side of the outer surface of the plug rod 405, and the inner side of the strip groove 409 of the plug rod 405 is movable. A limiting ring is sleeved in the middle of the plug rod 405, and the size of the limiting ring is larger than the aperture of the opening 406. One end of the spring B415 is fixedly connected to the outer surface of the limiting ring, and the other end of the spring B415 is fixedly connected to the inner wall of the circular groove 414. Two positioning holes 413 are provided on one side of the inner wall of the movable cavity 412, and the plug rod 405 is adapted to the positioning holes 413. To improve the stability of the insertion rod 405, the insertion rod 405 can only move a short distance inside the circular groove 414, so that the insertion rod 405 leaves the inner side of one of the positioning holes 413, and the strip plate 404 can be driven to move upward by moving the insertion rod 405 upward.

[0033] Furthermore, the lower end surface of the insertion rod 405 is fixedly connected to the arc plate 403, and a plurality of saw teeth B410 are evenly installed on the lower end surface of the arc plate 403, and a plurality of saw teeth A402 are evenly installed on the outer surface of the turntable 401, and the saw teeth A402 are adapted to the saw teeth B410, and a fixing ring is arranged on the outer periphery of one side of the outer surface of the fixing column 416, and a sleeve is arranged on the outer surface of the fixing ring, and an annular groove A is arranged below one side of the outer surface of the bottom plate 11, and an annular groove B is arranged on the inner wall of the annular groove A, the fixing ring is clamped into the inner side of the annular groove, and the sleeve is clamped into the inner side of the annular groove B, and the strip plate 404 moves upward, thereby driving the arc plate 403 to move upward, driving the saw teeth B410 to leave the outer side of the saw teeth A402, releasing the limit on the turntable 401, improving the stability between the fixing column 416 and the bottom plate 11, and improving the rotation stability of the turntable 401.

[0034] A through hole B is provided inside the fixing column 416, and four slots 417 are evenly provided on the inner wall of the through hole B. Four plugs 13 are evenly installed on the outer surface of one side of the cross bar 12, and the plugs 13 are matched with the slots 417, and the cross bar 12 is matched with the round hole 418. A threaded hole is provided on one side of the outer surface of the mounting seat 3, and through holes C are provided on the upper and lower outer surfaces of the baffle 9, and the cross bar 12 is matched with the through hole C. A through hole D is provided below the bottom plate 11, and four strip grooves are provided on the inner wall of the through hole D, and the plugs 13 are matched with the strip grooves. The cross bar 12 can pass through the through hole D, and the plug block 13 passes through the strip groove, so that one end of the cross bar 12 is inserted into the inner side of the round hole 418, and the plug block 13 is inserted into the inner side of the slot 417, so that the cross bar 12 can drive the turntable 401 to rotate while rotating. When the movable plate 5 is installed, the baffle 9 is placed on the other side of the movable plate 5, and a nut is screwed on the outer side of the threaded column at one end of the cross bar 12, and then a bolt is screwed on the inner side of the threaded hole to fix the baffle 9.

[0035] The upper end surface of the touch plate 1001 is fixedly connected to the lower end surface of the movable plate 5, the pressure plate 1004 is movably connected to the groove 1003 through four springs C1005, trapezoidal blocks 1006 are fixedly installed below both sides of the outer surface of the pressure plate 1004, storage grooves 1010 are arranged on both sides of the inner wall of the groove 1003, and transverse grooves 1013 are arranged above both sides of the outer surface of the touch plate 1001, and the transverse grooves 1013 are connected to the storage grooves 1010 through through holes A1012. A moving rod 1009 is provided on the inner side of the through hole A1012, and a spring D1011 is sleeved on the outer surface of the moving rod 1009. One end of the moving rod 1009 is fixedly connected to a triangular block 1008, and the other end of the moving rod 1009 is fixedly connected to a moving plate 1014. A square groove 1015 is provided on the upper end surface of the moving plate 1014, and springs E1016 are installed at the four end corners of the upper end surface of the square groove 1015. The upper end surface of the spring E1016 is fixedly connected to a lifting block 1007. When the upper end surface of the pressure plate 1004 is held by gravity, the spring C is compressed, and the pressure plate 1004 moves downward, driving the trapezoidal block 1006 to move downward. The inclined surface of the trapezoidal block 1006 contacts the triangular block 1008, pushing the triangular block 1008 to both sides. The triangular block 1008 moves outward, driving the moving rod 1009 and the moving plate 1014 to move outward at the same time. When the moving plate 1014 extends out of the horizontal groove 1013, the lifting block 1007 moves upward under the action of the spring E1016.

[0036] The moving plate 1014 is matched with the transverse groove 1013, the triangular block 1008 is matched with the storage groove 1010, the two ends of the spring D1011 are fixedly connected with the inner wall of the through hole A1012, the limit plate 1002 is fixedly connected with the outer surface of the moving plate 1014, the upper end surface of the pressing plate 1004 is fixedly connected with the rubber pad A through an adhesive, and the upper end surface of the lifting block 1007 is fixedly connected with the rubber pad B through an adhesive. The friction between the pressing plate 1004 and the lifting block 1007 and the object is improved.

[0037] When the hydraulic puller is in use, a rotation limit mechanism is provided to insert one end of the cross bar 12 into the inner side of the circular hole 418, and the plug block 13 is inserted into the inner side of the slot 417, so that the cross bar 12 can drive the turntable 401 to rotate while rotating. When the movable plate 5 is installed, the baffle plate 9 is placed on the other side of the movable plate 5, and a nut is screwed on the outer side of the threaded column at one end of the cross bar 12, and then a bolt is screwed on the inner side of the threaded hole to fix the baffle plate 9. First, the three plug rods 405 are pulled outward so that the plug rod 405 leaves one of the positioning holes 41 3, the insert rod 405 can be moved upward to drive the strip plate 404 to move upward, thereby driving the arc plate 403 to move upward, driving the sawtooth B410 to leave the outer side of the sawtooth A402, and releasing the limit of the turntable 401. When the upper end surface of the pressing plate 1004 contacts the lower end surface of the part to be disassembled, the pressing plate 1004 is held by gravity, the spring C is compressed, and the pressing plate 1004 moves downward, driving the trapezoidal block 1006 to move downward, and the inclined surface of the trapezoidal block 1006 contacts the triangular block 1008, which moves the triangular block 1008 to both sides. The triangular block 1008 moves outward, driving the moving rod 1009 and the moving plate 1014 to move outward at the same time. When the moving plate 1014 extends out of the horizontal groove 1013, the lifting block 1007 moves upward under the action of the spring E1016. The upper end surface of the lifting block 1007 is tightly fitted with the lower end surface of the part to be disassembled. When the pressing and extending mechanism 10 is in stable contact with the part to be disassembled, it is necessary to fix the angle of the movable plate 5, and then pull the insertion rod 405 to move the insertion rod 405 downward, and the other end of the insertion rod 405 is inserted into the lower The rotating plate 401 is positioned in the center of the positioning hole 413, and the strip plate 404 is moved downward, driving the arc plate 403 to move downward, driving the sawtooth B410 to engage with the inner side of the sawtooth A402, thereby limiting the turntable 401, thereby limiting the cross bar 12, and limiting the angle of the movable plate 5. The present invention can fix the angle of the movable plate 5 by providing a rotation limiting mechanism 4, and can expand the contact area by providing a pressing and extending mechanism 10, thereby improving the stability during disassembly, and preventing the accessories from being scratched or the touch panel 1001 from being ejected as the force increases.

[0038] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A hydraulic puller, comprising a hydraulic cylinder (2), a pressure rod (1) is arranged above the hydraulic cylinder (2), an external thread (6) is arranged below the outer surface of the hydraulic cylinder (2), the outer surface of the external thread (6) is connected to a threaded sleeve (8) through a thread, and a push rod (7) is fixedly connected to the lower end surface of the hydraulic cylinder (2), characterized in that: Six mounting seats (3) are evenly mounted on the outer surface of the threaded sleeve (8), wherein a bottom plate (11) is fixedly mounted on one side of the outer surface of three of the mounting seats (3), a baffle (9) is arranged on the other side of the outer surface of the mounting seat (3), a cross bar (12) is arranged on the side opposite to the outer surface of the bottom plate (11) and the baffle (9), a movable plate (5) is sleeved on the outer surface of the cross bar (12), and the movable plate (5) is movably connected to the bottom plate (11) via a rotation limiting mechanism (4), and the rotation limiting mechanism (4) comprises a circular plate (408) and a fixed column (416), the outer surface of the fixed column (416) is fixedly sleeved with a turntable (401), the lower end surface of the movable plate (5) is provided with a pressing and extending mechanism (10), the pressing and extending mechanism (10) comprises a touch plate (1001), the upper end surface of the touch plate (1001) is provided with a groove (1003), the inner side of the groove (1003) is provided with a pressure plate (1004), and both sides of the outer surface of the touch plate (1001) are provided with limit plates (1002).

2. A hydraulic puller according to claim 1, characterized in that: A threaded column is provided on one side of the outer surface of the cross bar (12); the circular plate (408) is fixedly connected to the outer surface of the bottom plate (11) via a supporting column; a fixing plate (407) is provided at one end of the circular plate (408); the circular plate (408) and the fixing plate (407) are an integral structure; a strip groove (409) is provided on one side of the outer surface of the fixing plate (407); and a movable cavity (412) is provided on the inner side of the strip groove (409).

3. A hydraulic puller according to claim 2, characterized in that: A spring A (411) is fixedly mounted on the inner wall of the movable cavity (412); the other end of the spring A (411) is fixedly connected to a strip plate (404); an opening (406) is provided above one side of the outer surface of the strip plate (404); a circular groove (414) is provided on one side of the opening (406); an insertion rod (405) is provided on the inner side of the circular groove (414); a spring B (415) is sleeved on one side of the outer surface of the insertion rod (405); and the insertion rod (405) is movable inside the strip groove (409).

4. A hydraulic puller according to claim 3, characterized in that: The middle sleeve of the insertion rod (405) is provided with a limiting ring, the size of the limiting ring is larger than the aperture of the opening (406), one end of the spring B (415) is fixedly connected to the outer surface of the limiting ring, and the other end of the spring B (415) is fixedly connected to the inner wall of the circular groove (414), and two positioning holes (413) are provided on one side of the inner wall of the movable cavity (412), and the insertion rod (405) is adapted to the positioning holes (413).

5. A hydraulic puller according to claim 4, characterized in that: The lower end surface of the insertion rod (405) is fixedly connected to an arc plate (403), and the lower end surface of the arc plate (403) is evenly installed with a plurality of saw teeth B (410). The outer surface of the turntable (401) is evenly installed with a plurality of saw teeth A (402), and the saw teeth A (402) are adapted to the saw teeth B (410). A fixing ring is arranged on the outer periphery of one side of the outer surface of the fixing column (416), and a sleeve is arranged on the outer surface of the fixing ring. An annular groove A is arranged below one side of the outer surface of the bottom plate (11), and an annular groove B is arranged on the inner wall of the annular groove A. The fixing ring is clamped into the inner side of the annular groove, and the sleeve is clamped into the inner side of the annular groove B.

6. The hydraulic puller according to claim 1, characterized in that: A through hole B is provided inside the fixing column (416), and four slots (417) are evenly provided on the inner wall of the through hole B. Four plug blocks (13) are evenly installed on the outer surface of one side of the cross bar (12), and the plug blocks (13) are matched with the slots (417), and the cross bar (12) is matched with the circular hole (418).

7. The hydraulic puller according to claim 1, characterized in that: A threaded hole is provided on one side of the outer surface of the mounting seat (3), a through hole C is provided on the upper and lower outer surfaces of the baffle plate (9), the cross bar (12) is adapted to the through hole C, a through hole D is provided below the bottom plate (11), four strip grooves are provided on the inner wall of the through hole D, and the plug block (13) is adapted to the strip grooves.

8. The hydraulic puller according to claim 1, characterized in that: The upper end surface of the touch plate (1001) is fixedly connected to the lower end surface of the movable plate (5); the pressure plate (1004) is movably connected to the groove (1003) via four springs C (1005); trapezoidal blocks (1006) are fixedly installed below both sides of the outer surface of the pressure plate (1004); receiving grooves (1010) are arranged on both sides of the inner wall of the groove (1003); transverse grooves (1013) are arranged above both sides of the outer surface of the touch plate (1001); and the transverse grooves (1013) are connected to the receiving grooves (1010) via through holes A (1012).

9. The hydraulic puller according to claim 1, characterized in that: A moving rod (1009) is arranged on the inner side of the through hole A (1012), and a spring D (1011) is sleeved on the outer surface of the moving rod (1009). One end of the moving rod (1009) is fixedly connected to a triangular block (1008), and the other end of the moving rod (1009) is fixedly connected to a moving plate (1014). A square groove (1015) is arranged on the upper end surface of the moving plate (1014), and springs E (1016) are installed at the four end corners of the upper end surface of the square groove (1015), and the upper end surface of the spring E (1016) is fixedly connected to a lifting block (1007).

10. The hydraulic puller according to claim 1, characterized in that: The movable plate (1014) is matched with the transverse groove (1013), the triangular block (1008) is matched with the storage groove (1010), the two ends of the spring D (1011) are fixedly connected to the inner wall of the through hole A (1012), the limit plate (1002) is fixedly connected to the outer surface of the movable plate (1014), the upper end surface of the pressure plate (1004) is fixedly connected to the rubber pad A by adhesive, and the upper end surface of the lifting block (1007) is fixedly connected to the rubber pad B by adhesive.

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