Hydraulic pin puller
By designing a hydraulic pin pulley, the guide pulley and limit clamping block are used to reduce wear and autonomous movement of the traction rope, and prevent the pin shaft from falling out through arc-shaped limiting parts, the problem of tilting and damage of the hydraulic pin puller after being pulled out is solved, and the service life and effect are improved.
Patent Information
- Application Number
- CN202422114854.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
After pulling out the pin, the hydraulic pin puller loses the force that is pressed against the hydraulic bracket, resulting in tilt, which can easily cause the pin to fall out, causing vibration and damage to the hydraulic pin puller, affecting the service life.
A hydraulic pin puller is designed, including a hydraulic jack, a positioning support frame, a limit sleeve, a traction rope and a curved limiting member. The wear of the traction rope is reduced by the first guide pulley and the second guide pulley, and the limiting of the pin shaft is achieved through the limit clamping block and the curved limiting member to prevent falling out.
It effectively reduces the autonomous movement and wear of the traction rope, prevents the pin shaft from falling out, avoids vibration and damage of the hydraulic pin puller, and improves service life and use effect.
Smart Images
Figure CN222806963U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pin pullers, and more specifically, particularly relates to a hydraulic pin puller. Background Art
[0002] When disassembling the hydraulic support, it is necessary to use a hydraulic pin puller to pull the pin out of the pin hole. When pulling the pin, it is necessary to first fix the connecting rod to the end of the pin, and then fix one end of the wire rope to the top of the hydraulic jack, and pass the other end of the wire rope through the sleeve and fix it to the end of the connecting rod. The support frame is pushed to move by the hydraulic jack, so that the wire rope slides along the guide pulley, and the pin is pulled out by the sliding of the wire rope.
[0003] Based on the above, after the pin shaft is pulled out, the hydraulic pin puller will lose the force to press against the hydraulic support. At this time, the hydraulic pin puller will tilt, which may easily cause the pin shaft to fall out of the sleeve. At this time, the pin shaft may easily hit the hydraulic pin puller, causing the hydraulic pin puller to vibrate greatly, which may easily cause damage to the hydraulic pin puller and affect the service life of the hydraulic pin puller. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides a hydraulic pin puller to solve the problem that after the pin shaft is pulled out, the hydraulic pin puller will lose the force to press against the hydraulic support. At this time, the hydraulic pin puller will be tilted, which may easily cause the pin shaft to fall out of the sleeve. At this time, the pin shaft may easily hit the hydraulic pin puller, causing the hydraulic pin puller to vibrate greatly, which may easily cause damage to the hydraulic pin puller and affect the service life of the hydraulic pin puller.
[0005] The purpose and effect of the hydraulic pin puller of the utility model are achieved by the following specific technical means:
[0006] A hydraulic pin puller comprises a hydraulic jack, a positioning support frame, a positioning structure, a limiting sleeve, a traction rope, a limiting structure, a positioning mounting plate, a positioning mounting shaft and an arc-shaped limiting piece; the positioning support frame is bolted to the left side of the piston rod of the hydraulic jack; the positioning structure is arranged on the left side of the hydraulic jack; the limiting sleeve is bolted to the upper part of the hydraulic jack; the traction rope is fixedly connected to the right side of the hydraulic jack; the limiting structure is arranged on the left side of the limiting sleeve; two groups of positioning mounting plates are provided, and the two groups of positioning mounting plates are respectively fixedly connected to the front and rear sides of the limiting sleeve; two positioning mounting shafts are provided, and the two positioning mounting shafts are respectively rotatably connected to the lower parts of the two groups of positioning mounting plates; two arc-shaped limiting pieces are provided, and the two arc-shaped limiting pieces are respectively fixedly connected to the right sides of the two positioning mounting shafts.
[0007] Furthermore, the limiting structure includes a limiting mounting frame and a connecting guide rod; the limiting mounting frame is fixedly connected to the left side of the limiting sleeve; two connecting guide rods are provided, and the two connecting guide rods are respectively fixedly connected to the front and rear sides of the limiting mounting frame.
[0008] Furthermore, the limiting structure also includes a limiting drive rack, a pressure inclined plate and a third return spring; two limiting drive racks are provided, and the two limiting drive racks are respectively connected to the front and rear sides of the limiting sleeve by sliding up and down; two pressure inclined plates are provided, and the two pressure inclined plates are respectively fixedly connected to the right end faces of the two limiting drive racks; two third return springs are provided, and the two limiting drive racks are elastically connected to the limiting mounting frame through the two third return springs.
[0009] Furthermore, the limiting structure also includes a limiting drive gear, an arc-shaped clamping plate and a fourth return spring; two limiting drive gears are provided, and the two limiting drive gears are respectively fixedly connected to the left sides of the two positioning mounting shafts, and the two limiting drive gears are respectively meshed with the two limiting drive racks; two arc-shaped clamping plates are provided, and multiple fourth return springs are provided, and the two arc-shaped clamping plates are elastically connected to the two arc-shaped limiting members through multiple fourth return springs.
[0010] Furthermore, the positioning structure includes a first guide pulley and a second guide pulley; the first guide pulley is rotatably connected to the lower part of the positioning support frame; the second guide pulley is rotatably connected to the upper part of the positioning support frame, and the outer circumferential array of the second guide pulley is fixedly connected with a plurality of meshing teeth.
[0011] Furthermore, the positioning structure also includes a positioning mounting frame, an extrusion bevel block and a first return spring; two positioning mounting frames are provided, and the two positioning mounting frames are respectively fixedly connected to the front and rear sides of the positioning support frame; a plurality of meshing teeth are evenly distributed and fixedly connected on the left side of the extrusion bevel block, and two extrusion bevel blocks are provided, and the two extrusion bevel blocks are respectively slidably connected to the lower parts of the two positioning mounting frames up and down; two first return springs are provided, and the two extrusion bevel blocks are elastically connected to the two positioning mounting frames through the two first return springs.
[0012] Furthermore, the positioning structure also includes a limiting guide rod, a limiting clamping block and a second return spring; two limiting guide rods are provided, and the two limiting guide rods are respectively connected to the upper parts of the two positioning mounting frames by sliding forward and backward; the upper part of the limiting clamping block is an arc-shaped structure, and the lower part of the limiting clamping block is a right-angled trapezoidal structure; two limiting clamping blocks are provided, and the two limiting clamping blocks are respectively fixedly connected to the inner sides of the two limiting guide rods; two second return springs are provided, and the two limiting clamping blocks are respectively elastically connected to the two positioning mounting frames through the two second return springs.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The utility model reduces the wear of the traction rope by the first guide pulley and the second guide pulley, and limits the traction rope by the limit clamping block after the traction rope stops moving, thereby effectively reducing the autonomous movement of the traction rope, thereby avoiding the traction rope from escaping from the positioning support frame, avoiding the repeated threading of the traction rope, and improving the use effect of the hydraulic pin puller. After the pin shaft moves to the end of the limiting sleeve, the arc-shaped limiting piece will automatically close to block the pin shaft, so that the pin shaft cannot fall out of the limiting sleeve, effectively avoiding the pin shaft from hitting the hydraulic pin puller, avoiding the hydraulic pin puller from causing large vibration and damage, and improving the service life of the hydraulic pin puller. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the position of the positioning mounting frame of the utility model.
[0017] Figure 3 It is a schematic diagram of the positional relationship between the extrusion inclined block and the limit clamping block of the utility model.
[0018] Figure 4 This utility model Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.
[0019] Figure 5 It is a schematic diagram of the positional relationship between the limiting sleeve and the limiting mounting frame of the utility model.
[0020] Figure 6 It is a structural schematic diagram of the arc-shaped clamping plate of the utility model.
[0021] Figure 7 It is a schematic diagram of the matching relationship between the limit drive rack and the limit drive gear of the utility model.
[0022] In the figure, the corresponding relationship between the component names and the figure numbers is as follows:
[0023] 1. Hydraulic jack; 2. Positioning support frame; 201. First guide pulley; 202. Second guide pulley; 203. Positioning mounting frame; 204. Extrusion inclined block; 205. First return spring; 206. Limit guide rod; 207. Limit clamping block; 208. Second return spring; 3. Limit sleeve; 301. Limit mounting frame; 302. Connecting guide rod; 303. Limit drive rack; 304. Pressure inclined plate; 305. Third return spring; 4. Traction rope; 5. Positioning mounting plate; 6. Positioning mounting shaft; 601. Limit drive gear; 7. Arc limit member; 701. Arc clamping plate; 702. Fourth return spring. DETAILED DESCRIPTION
[0024] The implementation of the utility model is further described in detail below in conjunction with the drawings and examples. Embodiment 1
[0025] As attached Figure 1 To Attachment Figure 4 As shown:
[0026] The utility model provides a hydraulic pin puller, comprising a hydraulic jack 1, a positioning support frame 2, a positioning structure, a limiting sleeve 3 and a traction rope 4; the positioning support frame 2 is bolted to the left side of the piston rod of the hydraulic jack 1; the positioning structure is arranged on the left side of the hydraulic jack 1; the limiting sleeve 3 is bolted to the upper part of the hydraulic jack 1; and the traction rope 4 is fixedly connected to the right side of the hydraulic jack 1.
[0027] Among them, the positioning structure includes a first guide pulley 201 and a second guide pulley 202; the first guide pulley 201 is rotatably connected to the lower part of the positioning support frame 2; the second guide pulley 202 is rotatably connected to the upper part of the positioning support frame 2, and the outer circumferential array of the second guide pulley 202 is fixedly connected with multiple meshing teeth.
[0028] Among them, the positioning structure also includes a positioning mounting frame 203, an extrusion bevel block 204 and a first return spring 205; two positioning mounting frames 203 are provided, and the two positioning mounting frames 203 are respectively fixedly connected to the front and rear sides of the positioning support frame 2; a plurality of meshing teeth are evenly distributed and fixedly connected on the left side of the extrusion bevel block 204, and two extrusion bevel blocks 204 are provided, and the two extrusion bevel blocks 204 are respectively slidably connected to the lower parts of the two positioning mounting frames 203; two first return springs 205 are provided, and the two extrusion bevel blocks 204 are elastically connected to the two positioning mounting frames 203 through two first return springs 205.
[0029] Among them, the positioning structure also includes a limiting guide rod 206, a limiting clamping block 207 and a second return spring 208; two limiting guide rods 206 are provided, and the two limiting guide rods 206 are respectively connected to the upper part of the two positioning mounting frames 203 by sliding forward and backward; the upper part of the limiting clamping block 207 is an arc-shaped structure, and the lower part of the limiting clamping block 207 is a right-angled trapezoidal structure. Two limiting clamping blocks 207 are provided, and the two limiting clamping blocks 207 are respectively fixedly connected to the inner sides of the two limiting guide rods 206; two second return springs 208 are provided, and the two limiting clamping blocks 207 are elastically connected to the two positioning mounting frames 203 through two second return springs 208.
[0030] The specific usage and function of this embodiment are as follows: the traction rope 4 is passed around the first guide pulley 201 and the second guide pulley 202 and then connected to the connecting rod fixed with the pin shaft, and the positioning support frame 2, the first guide pulley 201 and the second guide pulley 202 are pushed to move by the hydraulic jack 1. At this time, the traction rope 4 will pull the pin shaft to slide outward along the limiting sleeve 3 until the pin shaft is pulled out. When the traction rope 4 slides, it will push the first guide pulley 201 and the second guide pulley 202 to rotate under the action of friction. When the second guide pulley 202 rotates, it will push the extrusion inclined block 204 downward under the action of the meshing teeth. , causing the extrusion bevel block 204 to slide downward along the positioning mounting frame 203. At this time, the thrust on the limit clamping block 207 is reduced, and the second return spring 208 will pull the limit clamping block 207 to return away from the traction rope 4, reducing the resistance on the traction rope 4. When the traction rope 4 stops moving, the second guide pulley 202 is no longer subjected to friction, and the first return spring 205 pushes the extrusion bevel block 204 to return, and squeezes the limit clamping block 207 again, so that the limit clamping block 207 contacts with the traction rope 4, reducing the autonomous sliding of the traction rope 4, and the limit guide rod 206 can guide the movement of the limit clamping block 207. Embodiment 2
[0031] As attached Figure 3 To Attachment Figure 7 As shown:
[0032] On the basis of embodiment one, it also includes a limiting structure, a positioning mounting plate 5, a positioning mounting shaft 6 and an arc-shaped limiting member 7; the limiting structure is arranged on the left side of the limiting sleeve 3; two groups of positioning mounting plates 5 are arranged, and the two groups of positioning mounting plates 5 are respectively fixedly connected to the front and rear sides of the limiting sleeve 3; two positioning mounting shafts 6 are arranged, and the two positioning mounting shafts 6 are respectively rotatably connected to the lower parts of the two groups of positioning mounting plates 5; two arc-shaped limiting members 7 are arranged, and the two arc-shaped limiting members 7 are respectively fixedly connected to the right sides of the two positioning mounting shafts 6.
[0033] Among them, the limiting structure includes a limiting mounting frame 301 and a connecting guide rod 302; the limiting mounting frame 301 is fixedly connected to the left side of the limiting sleeve 3; two connecting guide rods 302 are provided, and the two connecting guide rods 302 are respectively fixedly connected to the front and rear sides of the limiting mounting frame 301.
[0034] Among them, the limiting structure also includes a limiting drive rack 303, a pressure inclined plate 304 and a third return spring 305; two limiting drive racks 303 are provided, and the two limiting drive racks 303 are respectively connected to the front and rear sides of the limiting sleeve 3 by sliding up and down; two pressure inclined plates 304 are provided, and the two pressure inclined plates 304 are respectively fixedly connected to the right end faces of the two limiting drive racks 303; two third return springs 305 are provided, and the two limiting drive racks 303 are elastically connected to the limiting mounting frame 301 through the two third return springs 305.
[0035] Among them, the limiting structure also includes a limiting drive gear 601, an arc-shaped clamping plate 701 and a fourth reset spring 702; two limiting drive gears 601 are provided, and the two limiting drive gears 601 are respectively fixedly connected to the left sides of the two positioning installation shafts 6, and the two limiting drive gears 601 are respectively meshed with the two limiting drive racks 303; two arc-shaped clamping plates 701 are provided, and multiple fourth reset springs 702 are provided, and the two arc-shaped clamping plates 701 are elastically connected to the two arc-shaped limiting members 7 through multiple fourth reset springs 702.
[0036] The specific usage and function of this embodiment are as follows: after the pin shaft moves to the left side of the limiting sleeve 3, it will squeeze the pressure inclined plate 304, causing the pressure inclined plate 304 and the limit driving rack 303 to slide downward along the connecting guide rod 302 on the limiting mounting frame 301. When the limit driving rack 303 moves, it will drive the limit driving gear 601 and the positioning mounting shaft 6 to rotate along the positioning mounting plate 5. When the positioning mounting shaft 6 rotates, it will drive the arc limit member 7 to rotate, so that the arc limit member 7 is blocked on the outside of the pin shaft. At this time, the arc clamping plate 701 will press the pin shaft under the action of the fourth reset spring 702, so that the pin shaft can no longer move. After the pin shaft is taken out from the other side of the limiting sleeve 3, the third reset spring 305 pushes the limit driving rack 303 and the arc limit member 7 to reset.
[0037] In this article, there are a few points to note:
[0038] 1. The drawings of the embodiments of the present disclosure only involve structures related to the embodiments of the present disclosure, and other structures may refer to general designs.
[0039] 2. In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.
[0040] The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.
Claims
1. A hydraulic pin puller, comprising a hydraulic jack (1), a positioning support frame (2), a positioning structure, a limiting sleeve (3), a traction rope (4), a limiting structure, a positioning mounting plate (5), a positioning mounting shaft (6) and an arc-shaped limiting member (7); the positioning support frame (2) is bolted to the left side of the piston rod of the hydraulic jack (1); the limiting sleeve (3) is bolted to the upper part of the hydraulic jack (1); the characteristics are: The positioning structure is arranged on the left side of the hydraulic jack (1); the traction rope (4) is fixedly connected to the right side of the hydraulic jack (1); the limiting structure is arranged on the left side of the limiting sleeve (3); two groups of positioning mounting plates (5) are arranged, and the two groups of positioning mounting plates (5) are respectively fixedly connected to the front and rear sides of the limiting sleeve (3); two positioning mounting shafts (6) are arranged, and the two positioning mounting shafts (6) are respectively rotatably connected to the lower parts of the two groups of positioning mounting plates (5); two arc-shaped limiting members (7) are arranged, and the two arc-shaped limiting members (7) are respectively fixedly connected to the right sides of the two positioning mounting shafts (6).
2. The hydraulic pin puller according to claim 1, characterized in that: The positioning structure comprises a first guide pulley (201) and a second guide pulley (202); the first guide pulley (201) is rotatably connected to the lower part of the positioning support frame (2); the second guide pulley (202) is rotatably connected to the upper part of the positioning support frame (2), and a plurality of meshing teeth are fixedly connected to an outer circumferential array of the second guide pulley (202).
3. The hydraulic pin puller according to claim 2, characterized in that: The positioning structure further comprises a positioning mounting frame (203), an extrusion bevel block (204) and a first return spring (205); two positioning mounting frames (203) are provided, and the two positioning mounting frames (203) are respectively fixedly connected to the front and rear sides of the positioning support frame (2); a plurality of meshing teeth are evenly distributed and fixedly connected on the left side of the extrusion bevel block (204), and two extrusion bevel blocks (204) are provided, and the two extrusion bevel blocks (204) are respectively slidably connected to the lower parts of the two positioning mounting frames (203); two first return springs (205) are provided, and the two extrusion bevel blocks (204) are respectively elastically connected to the two positioning mounting frames (203) through the two first return springs (205).
4. The hydraulic pin puller according to claim 3, characterized in that: The positioning structure further comprises a limit guide rod (206), a limit clamping block (207) and a second return spring (208); two limit guide rods (206) are provided, and the two limit guide rods (206) are respectively connected to the upper parts of the two positioning mounting frames (203) by sliding forward and backward; the upper part of the limit clamping block (207) is an arc-shaped structure, and the lower part of the limit clamping block (207) is a right-angled trapezoidal structure; two limit clamping blocks (207) are provided, and the two limit clamping blocks (207) are respectively fixedly connected to the inner sides of the two limit guide rods (206); two second return springs (208) are provided, and the two limit clamping blocks (207) are respectively elastically connected to the two positioning mounting frames (203) through the two second return springs (208).
5. The hydraulic pin puller according to claim 1, characterized in that: The limiting structure comprises a limiting mounting frame (301) and a connecting guide rod (302); the limiting mounting frame (301) is fixedly connected to the left side of the limiting sleeve (3); two connecting guide rods (302) are provided, and the two connecting guide rods (302) are respectively fixedly connected to the front and rear sides of the limiting mounting frame (301).
6. The hydraulic pin puller according to claim 5, characterized in that: The limiting structure further comprises a limiting drive rack (303), a pressure inclined plate (304) and a third return spring (305); two limiting drive racks (303) are provided, and the two limiting drive racks (303) are respectively connected to the front and rear sides of the limiting sleeve (3) by sliding up and down; two pressure inclined plates (304) are provided, and the two pressure inclined plates (304) are respectively fixedly connected to the right end surfaces of the two limiting drive racks (303); two third return springs (305) are provided, and the two limiting drive racks (303) are elastically connected to the limiting mounting frame (301) through the two third return springs (305).
7. The hydraulic pin puller according to claim 6, characterized in that: The limiting structure also includes a limiting drive gear (601), an arc-shaped clamping plate (701) and a fourth return spring (702); two limiting drive gears (601) are provided, and the two limiting drive gears (601) are respectively fixedly connected to the left sides of the two positioning installation shafts (6), and the two limiting drive gears (601) are respectively meshed with the two limiting drive racks (303); two arc-shaped clamping plates (701) are provided, and a plurality of fourth return springs (702) are provided, and the two arc-shaped clamping plates (701) are elastically connected to the two arc-shaped limiting members (7) through the plurality of fourth return springs (702).