CN215701359U

CN215701359U - Pressure type pin puller with double-jackscrew structure

Info

Publication number: CN215701359U
Application number: CN202121365305.4U
Authority: CN
Inventors: 王博龙
Original assignee: SHENYANG BOLONG AUTO PART MANUFACTURE CO LTD
Current assignee: SHENYANG BOLONG AUTO PART MANUFACTURE CO LTD
Priority date: 2021-06-19
Filing date: 2021-06-19
Publication date: 2022-02-01
Anticipated expiration: 2031-06-19

Abstract

The utility model discloses a pressure type pin puller with a double jackscrew structure, which comprises a shell, a guide hole, an oil hole, a piston rod, a jackscrew, a fixed block, a sliding sleeve, an inner cavity, an annular oil cavity, an inner hexagonal groove, a locking head, a first external thread, a polished rod, a groove, a second external thread and the like; according to the utility model, the transmission of the force is carried out through hydraulic oil, and the fixing block and the sliding sleeve are synchronously pushed to integrally move upwards to pull out the pin by matching with the double jackscrews, so that the stress is more uniform, and the pin is also pulled out; when the long pin is not completely pulled out, the adjusting sleeve body is pressed down alone to drive oil in the guide hole to flow back into the annular oil cavity, then the adjusting sleeve body is rotated to move upwards to pass through the inner hexagonal groove to tightly push the locking head again, then the pressing plate is continuously pressed down to drive the sliding sleeve to drive the adjusting sleeve body to move upwards again, and the moving upwards of the adjusting sleeve body drives the polished rod and the external thread II to move upwards to pull out the pin upwards through the locking head, so that the using effect is improved.

Description

Pressure type pin puller with double-jackscrew structure

Technical Field

The utility model relates to the technical field of disassembling tools, in particular to a pressure type pin puller with a double-jackscrew structure.

Background

At present, the pin puller used in the market mostly adopts a pin pulling mode that the force application direction is consistent with the movement direction of a pulled pin, and the pin is pulled out by utilizing the inertia of a sliding block through a sliding block.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide the pressure type pin puller with the double-jackscrew structure, and solves the problem that the existing pressure type pin puller is difficult to meet the pulling-out requirements of pins with different lengths.

The technical scheme adopted by the utility model for realizing the purpose is as follows: a pressure type pin puller with a double-jackscrew structure is characterized by comprising a shell, a guide hole, an oil hole, a piston rod, a jackscrew, a fixed block, a sliding sleeve, an inner cavity, an annular oil cavity, an annular piston, a connecting rod, an adjusting sleeve body, a pressure plate, an inner hexagonal groove, a locking head, a first external thread, a polished rod, a groove and a second external thread; an inner cavity is formed in the center of the shell, a sliding sleeve is vertically and movably connected to the center of the inner cavity, and an annular oil cavity is formed in the periphery of the upper side of the shell; the two guide holes are respectively arranged in the left lower side and the right lower side of the inner cavity, the upper sides of the two guide holes are vertically and movably connected with piston rods, and the lower sides of the two guide holes are communicated with the lower side of the annular oil cavity through oil holes; the two fixing blocks are respectively positioned right above the corresponding guide holes and are respectively fixedly connected to the outer parts of the left side and the right side of the sliding sleeve; the number of the jackscrews is two, the outer parts of the lower sides of the two jackscrews are respectively and fixedly connected to the inner parts of the centers of the upper sides of the corresponding piston rods, and the tops of the two jackscrews are respectively connected with the centers of the bottom surfaces of the corresponding fixed blocks; the annular piston is movably connected inside the annular oil cavity, and the left side and the right side of the upper surface of the annular piston are fixedly connected with vertical connecting rods; the left side and the right side of the bottom surface of the pressure plate are respectively fixedly connected with the tops of the corresponding connecting rods; the adjusting sleeve body is movably connected inside the center of the shell, an external thread I is arranged outside the lower side of the adjusting sleeve body and is connected with a vertical threaded hole arranged inside the sliding sleeve, and an inner hexagonal groove is formed inside an opening at the upper side of the adjusting sleeve body; the polished rod is movably connected inside the adjusting sleeve body, and the outer part of the lower side of the polished rod is provided with a second external thread; the locking head is movably connected to the lower side of the center inside the inner hexagonal groove, and the center of the bottom of the locking head is fixedly connected with the top of the polished rod; the groove is arranged in the center of the lower side of the shell.

Preferably, hydraulic oil is arranged inside the annular oil cavity.

Preferably, the center of the pressure plate is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the upper side of the adjusting sleeve body.

Preferably, the locking head is provided with a hexagon socket in the center of the upper side.

Preferably, the groove is flared.

The utility model has the beneficial effects that:

(1) according to the utility model, the transmission of the force is carried out through the hydraulic oil, and meanwhile, the double jackscrews are matched to synchronously push the fixed block and the sliding sleeve to integrally move upwards to pull out the pin, so that the uniform stress is ensured, and the pin is favorably pulled out.

(2) When the long pin is not completely pulled out, the adjusting sleeve body is pressed down alone to drive oil in the guide hole to flow back into the annular oil cavity, then the adjusting sleeve body is rotated to move upwards to pass through the inner hexagonal groove to tightly push the locking head again, then the pressing plate is continuously pressed down to drive the sliding sleeve to drive the adjusting sleeve body to move upwards again, and the moving upwards of the adjusting sleeve body drives the polished rod and the external thread II to move upwards to pull out the pin upwards through the locking head, so that the using effect is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a partial top view of the present invention.

In the figure: 1-a shell; 2-a guide hole; 3-oil hole; 4-a piston rod; 5-top thread; 6, fixing blocks; 7-a sliding sleeve; 8-inner cavity; 9-an annular oil chamber; 10-an annular piston; 11-a connecting rod; 12-adjusting sleeve body; 13-a platen; 14-inner hexagonal groove; 15-a locking head; 16-external thread one; 17-a polish rod; 18-a groove; 19-external thread two.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1-2, a double-jackscrew structure pressure type pin puller comprises a shell 1, a guide hole 2, an oil hole 3, a piston rod 4, a jackscrew 5, a fixed block 6, a sliding sleeve 7, an inner cavity 8, an annular oil cavity 9, an annular piston 10, a connecting rod 11, an adjusting sleeve body 12, a pressure plate 13, an inner hexagonal groove 14, a locking head 15, a first external thread 16, a polish rod 17, a groove 18 and a second external thread 19; an inner cavity 8 is formed in the center of the shell 1, a sliding sleeve 7 is vertically and movably connected to the center of the inner cavity 8, and an annular oil cavity 9 is formed in the periphery of the upper side of the shell 1; the number of the guide holes 2 is two, the two guide holes 2 are respectively arranged in the left lower side and the right lower side of the inner cavity 8, the upper sides of the two guide holes 2 are vertically and movably connected with piston rods 4, and the lower sides of the two guide holes 2 are communicated with the lower side of an annular oil cavity 9 through oil holes 3; the number of the fixed blocks 6 is two, the two fixed blocks 6 are respectively positioned right above the corresponding guide holes 2, and the two fixed blocks 6 are respectively and fixedly connected to the outer parts of the left side and the right side of the sliding sleeve 7; the number of the jackscrews 5 is two, the outer parts of the lower sides of the two jackscrews 5 are respectively and fixedly connected to the inner parts of the centers of the upper sides of the corresponding piston rods 4, and the tops of the two jackscrews 5 are respectively connected with the centers of the bottoms of the corresponding fixed blocks 6; the annular piston 10 is movably connected inside the annular oil cavity 9, and the left side and the right side of the upper surface of the annular piston 10 are fixedly connected with vertical connecting rods 11; the left side and the right side of the bottom surface of the pressure plate 13 are respectively fixedly connected with the tops of the corresponding connecting rods 11; the adjusting sleeve body 12 is movably connected to the inside of the center of the shell 1, an external thread I16 is arranged on the outer portion of the lower side of the adjusting sleeve body 12, the external thread I16 is connected with a vertical threaded hole formed in the inner portion of the sliding sleeve 7, and an inner hexagonal groove 14 is formed in the inner portion of an opening in the upper side of the adjusting sleeve body 12; the polish rod 17 is movably connected inside the adjusting sleeve body 12, and the outer part of the lower side of the polish rod 17 is provided with a second external thread 19; the locking head 15 is movably connected with the lower side of the center in the inner hexagonal groove 14, and the center of the bottom of the locking head 15 is fixedly connected with the top of the polish rod 17; said recess 18 is provided centrally inside the lower side of the housing 1.

Hydraulic oil is arranged inside the annular oil cavity 9; a through hole is formed in the center of the pressure plate 13, and the aperture of the through hole is larger than the outer diameter of the upper side of the adjusting sleeve body 12; an inner hexagonal hole is formed in the center of the upper side of the locking head 15; the recess 18 is flared.

When the utility model is used, firstly, the center of the bottom surface of the shell 1 is close to the pin, then the polish rod 17 is driven to rotate by the locking head 15, the rotation of the polish rod 17 can screw the second external thread 19 into the threaded hole on the pin, then the press plate 13 is pressed to push the annular piston 10 to move down integrally by the connecting rod 11, the downward movement of the annular piston 10 can press the hydraulic oil in the annular oil chamber 9 to the guide hole 2 by the oil hole 3, the hydraulic oil in the guide hole 2 can push the piston rod 4 to move upward, the upward movement of the piston rod 4 can push the fixed block 6 and the sliding sleeve 7 to move upward integrally by the jackscrew 5, the pin can be pulled out upward by the polish rod 17 and the second external thread 19 when the long pin guide hole is not pulled out completely, at this time, firstly, the adjusting sleeve body 12 is pressed downward to drive the hydraulic oil in the guide hole 2 to flow back into the annular oil chamber 9 alone, then the adjusting sleeve body 12 is rotated to move upward to tightly push the locking head 15 again by the internal hexagonal groove 14, then, the pressing plate 13 is continuously pressed to drive the sliding sleeve 7 to drive the adjusting sleeve body 12 to move upwards again, and the adjusting sleeve body 12 moves upwards to drive the polished rod 17 and the second external thread 19 to move upwards through the locking head 15 to pull out the pin upwards, so that the using effect is improved.

In the case of the control mode of the utility model, which is controlled by manual actuation or by means of existing automation techniques, the wiring diagram of the power elements and the provision of power are known in the art and the utility model is primarily intended to protect the mechanical means, so that the control mode and wiring arrangement are not explained in detail in the present invention.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

While there have been shown and described what are at present considered to be the fundamental principles of the utility model and its essential features and advantages, it will be understood by those skilled in the art that the utility model is not limited by the embodiments described above, which are merely illustrative of the principles of the utility model, but that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. A pressure type pin puller with a double-jackscrew structure is characterized by comprising a shell (1), a guide hole (2), an oil hole (3), a piston rod (4), a jackscrew (5), a fixed block (6), a sliding sleeve (7), an inner cavity (8), an annular oil cavity (9), an annular piston (10), a connecting rod (11), an adjusting sleeve body (12), a pressure plate (13), an inner hexagonal groove (14), a locking head (15), an external thread I (16), a polish rod (17), a groove (18) and an external thread II (19);

an inner cavity (8) is formed in the center of the shell (1), a sliding sleeve (7) is vertically and movably connected to the center of the inner cavity (8), and an annular oil cavity (9) is formed in the periphery of the upper side of the shell (1);

the two guide holes (2) are respectively arranged in the left lower side and the right lower side of the inner cavity (8), the upper sides of the two guide holes (2) are vertically and movably connected with piston rods (4), and the lower sides of the two guide holes (2) are communicated with the lower side of the annular oil cavity (9) through oil holes (3);

the number of the fixed blocks (6) is two, the two fixed blocks (6) are respectively positioned right above the corresponding guide holes (2), and the two fixed blocks (6) are respectively and fixedly connected to the outer parts of the left side and the right side of the sliding sleeve (7);

the two jackscrews (5) are arranged, the outer parts of the lower sides of the two jackscrews (5) are respectively and fixedly connected with the inner parts of the centers of the upper sides of the corresponding piston rods (4), and the tops of the two jackscrews (5) are respectively connected with the centers of the bottom surfaces of the corresponding fixed blocks (6);

the annular piston (10) is movably connected inside the annular oil cavity (9), and the left side and the right side of the upper surface of the annular piston (10) are fixedly connected with vertical connecting rods (11);

the left side and the right side of the bottom surface of the pressure plate (13) are respectively and fixedly connected with the tops of the corresponding connecting rods (11);

the adjusting sleeve body (12) is movably connected to the inner portion of the center of the shell (1), an external thread I (16) is arranged on the outer portion of the lower side of the adjusting sleeve body (12), the external thread I (16) is connected with a vertical threaded hole formed in the inner portion of the sliding sleeve (7), and an inner hexagonal groove (14) is formed in the opening portion of the upper side of the adjusting sleeve body (12);

the polished rod (17) is movably connected inside the adjusting sleeve body (12), and the outer part of the lower side of the polished rod (17) is provided with a second external thread (19);

the locking head (15) is movably connected to the lower side of the center in the inner hexagonal groove (14), and the center of the bottom of the locking head (15) is fixedly connected with the top of the polish rod (17);

the groove (18) is arranged in the center of the lower side of the shell (1).

2. The double-jackscrew pressure pin puller according to claim 1, characterized in that hydraulic oil is provided inside the annular oil chamber (9).

3. The double-jackscrew pressure pin puller according to claim 1, wherein the pressure plate (13) is provided with a through hole in the center, and the diameter of the through hole is larger than the outer diameter of the upper side of the adjusting sleeve body (12).

4. The double-jackscrew pressure pin puller according to claim 1, wherein the locking head (15) has a hexagonal socket formed in the center of the upper side.

5. A twin-jackscrew press pin puller as set forth in claim 1 in which said recess (18) is flared.