CN210081616U

CN210081616U - Hydraulic pin pulling device

Info

Publication number: CN210081616U
Application number: CN201920768943.7U
Authority: CN
Inventors: 孙如松; 孙玉华
Original assignee: Yangzhou Liliude Machinery Co Ltd
Current assignee: Yangzhou Liliude Machinery Co Ltd
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-02-18
Anticipated expiration: 2029-05-27

Abstract

The utility model provides a hydraulic pressure pulls out round pin device, comprising a cylinder body, the piston rod, a piston, pull out the round pin subassembly, supporting leg and pull out the round pin head, the piston rod is inserted and is established in the cylinder body and can be along cylinder body axial displacement, the both ends of piston rod all expose in the cylinder body, place the inside piston of cylinder body in setting firmly on the piston rod in, the piston is sealed to be set up inside the cylinder body and be used for cutting apart into first cavity and second cavity with the cylinder body, the cylinder body corresponds and has seted up an opening respectively with the both sides of piston, the one end of piston rod is provided with pulls out the round pin head, one end is provided with in addition. Adopt the utility model provides a hydraulic pressure pin pulling device can be fast, laborsaving realization is to the pulling out of locating pin.

Description

Hydraulic pin pulling device

Technical Field

The utility model relates to the field of machinary, especially, relate to a round pin device is pulled out to hydraulic pressure.

Background

When the frock location, people often can choose for use the locating pin. The locating pin is often required to be extracted by the pin extractor after the completion, the operating principle of the traditional pin extractor is that one end of a connecting rod is connected with the locating pin by using threads, the other end of the connecting rod is provided with a movable heavy hammer, the locating pin is extracted by using the impact force generated by the movable heavy hammer, in the actual use process, the gap between the locating pin and a cylinder body is often smaller, the locating pin and the cylinder body are fixed tightly, the stroke of the heavy hammer is limited, the connecting rod is impacted by the heavy hammer needing to be operated manually repeatedly, the working strength is higher, the force consumption during impact is not uniform, the connecting rod and the locating pin cannot be guaranteed to be perpendicular, so the locating pin is easy to deflect when moving outwards, the.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model provides a hydraulic pressure pulls out round pin device is convenient for pull out the locating pin of installing on the notch.

In order to achieve the above object, the utility model discloses a round pin device is pulled out to hydraulic pressure, include:

the piston rod is inserted in the cylinder body and can axially move along the cylinder body, two ends of the piston rod are exposed out of the cylinder body, the piston arranged in the cylinder body is fixedly arranged on the piston rod, the piston is arranged in the cylinder body in a sealing mode and divides the cylinder body into a first cavity and a second cavity, two sides of the cylinder body corresponding to the piston are respectively provided with an opening on a cylinder wall, the bottom end of the piston rod is provided with a pin pulling head used for fixing a positioning pin, the top end of the piston rod is connected with the pin pulling assembly, the pin pulling assembly comprises a bearing platform, a connecting piece, a hinge seat and a handle, the bearing platform comprises a fixing portion and a hinge portion, the fixing portion is fixed at the top of the cylinder body, a through hole is formed in the fixing portion, and the piston rod penetrates through the through hole and can axially move along the through hole, the hinge part is hinged with the first end shaft of the connecting piece, the second end of the connecting piece is hinged with the hinge seat, the hinge seat is hinged with the upper end shaft of the piston rod, and the axial direction of a hinge shaft between the hinge part and the connecting piece, the axial direction of a connecting shaft between the connecting piece and the hinge seat and the axial direction of the hinge shaft between the hinge seat and the piston rod are mutually parallel.

The beneficial effects of the utility model reside in that: the handle is matched with the piston rod, the positioning pin can be manually pulled out by pulling the handle under the condition of hydraulic and electric failure, and the handle adopts a lever principle, so that the pulling is more labor-saving; the supporting legs are arranged, so that the hydraulic pin pulling device is supported and fixed.

The utility model relates to a hydraulic pressure pulls out round pin device's further improvement lies in, the handle spiro union in articulated seat, handle one end is formed with the external screw thread, be formed with on the articulated seat cooperate in the internal thread hole of external screw thread.

The utility model relates to a hydraulic pressure pulls out round pin device's further improvement lies in, the piston rod with cylinder body sliding seal connects, the piston rod with the cylinder body passes through seal structure sliding seal and connects, seal structure including set firmly in the rubber packing ring at cylinder body top.

The utility model relates to a hydraulic pressure pulls out further improvement of round pin device lies in, supporting leg circumference evenly lays in the cylinder body bottom. The stability of hydraulic pressure pulling pin device support is guaranteed.

The utility model relates to a still further improvement of round pin device is pulled out to hydraulic pressure lies in, the supporting leg is L type landing leg, the one end and the cylinder body outer wall rigid coupling of L type landing leg, and one end is provided with the pars contractilis in addition. The telescopic length of the telescopic part is adjusted, so that the telescopic device can adapt to different use environments.

The utility model relates to a hydraulic pressure is pulled out and is sold device's further improvement lies in, pull out the round pin head and include the recess that matches with the locating pin, the side of recess is provided with the through-hole, the spiro union has the fixing bolt who is used for fixed locating pin in the through-hole. The positioning pins with different sizes can be positioned, and the positioning pin has good adaptability.

Drawings

Fig. 1 is a schematic structural view of a hydraulic pin pulling device of the present invention.

Fig. 2 is a partially enlarged schematic view of a portion a of fig. 1.

Fig. 3 is a sectional view of the cylinder body of the present invention.

Fig. 4 is a schematic structural view of the pin pulling head of the present invention.

Detailed Description

To facilitate understanding of the present invention, the following description is made with reference to the accompanying drawings and examples.

As can be seen from fig. 1 to 4, the present invention discloses a hydraulic pin pulling device for pulling out a positioning pin mounted on a notch; specifically, the device comprises a cylinder body 1, a piston rod 11, a piston 12, a shifting pin assembly 2, a supporting leg 3 and a shifting pin head 4, wherein the piston rod 11 is inserted into the cylinder body 1 and can move axially along the cylinder body 1, two ends of the piston rod 11 are exposed out of the cylinder body 1, the piston 12 arranged in the cylinder body 1 is fixedly arranged on the piston rod 11, the piston 12 is arranged in the cylinder body 1 in a sealing manner and divides the cylinder body 1 into a first (sealing) cavity and a second (sealing) cavity, two openings 13 are respectively arranged on the cylinder wall of the cylinder body 1 at two sides of the cylinder body 1 corresponding to the piston 12 and respectively used as an oil inlet and an oil outlet, the bottom end of the piston rod 11 is provided with the shifting pin head 4 exposed out of the cylinder body 1 and used for pulling out a positioning pin, the top end of the piston rod 11 is provided with the shifting pin assembly 2, the shifting pin assembly 2 comprises a bearing platform 21, a connecting, the fixing portion 211 is fixedly connected with the top of the cylinder 1, a through hole (not shown) is formed on the fixing portion 211, the piston rod 11 passes through the through hole and can move along the axial direction of the through hole, the hinge portion 212 is connected with the first end shaft of the connecting piece 22 in a hinged mode, the second end of the connecting piece 22 is connected with the hinge seat 23 in a hinged mode, the hinge seat 23 is connected with the top of the piston rod 11 in a hinged mode, the axial direction of a hinge shaft between the hinge portion 212 and the connecting piece 22, the axial direction of a connecting shaft between the connecting piece 22 and the hinge seat 23, and the axial direction of a hinge shaft between the hinge. In this embodiment, the platform 21, the connecting member 22, the hinge seat 23 and the piston rod 11 form a rocker-slider mechanism, and the piston rod is driven to slide up and down by the handle 24. In this embodiment, (1) the piston rod 11 can be moved upward by pressing the handle 24 downward, so as to drive the pin shifting head to move upward to shift out the positioning pin; (2) hydraulic oil can be fed through the opening 13 at the lower part, hydraulic oil can be discharged from the opening 13 at the upper part, the piston is pushed to move upwards by utilizing the pressure difference between the first cavity and the second cavity, the piston rod 11 and the pin pulling head 4 are further moved upwards, and finally the positioning pin positioned in the pin pulling head 4 is pulled out; the two pin pulling modes can be adaptively selected according to specific working conditions.

Preferably, the handle 24 is screwed with the hinge base 23, an external thread (not shown) is formed at one end of the handle 24, and an internal thread hole (not shown) matched with the external thread is formed on the hinge base 23; the handle 24 and the hinged seat 23 are detachably connected through threads, so that the use is convenient and the disassembly and assembly are convenient.

Preferably, the piston rod 11 is connected with the cylinder body 1 in a sliding and sealing manner through a sealing structure, the sealing structure comprises a rubber gasket 14 fixedly connected with the top of the cylinder body, a through hole for the piston rod 11 to penetrate through is formed in the rubber gasket 14, and the rubber gasket is fixedly arranged on the inner side of the cylinder body 1.

Preferably, the supporting legs 3 are uniformly distributed at the bottom of the cylinder body 1; specifically, supporting leg 3 is L type landing leg, and the one end and the 1 outer wall rigid coupling of cylinder body of L type landing leg, and the other end is provided with the pars contractilis. The length of the telescopic part is adjusted to adapt to different use environments, and for example, the positioning of the hydraulic pin pulling device on the inclined surface can be realized, so that the positioning pin on the inclined surface can be pulled out.

Preferably, as shown in fig. 4, the pin pulling head 4 includes a groove 41 matching with the positioning pin, a through hole 42 is provided on a side surface of the groove 41, and a fixing bolt 43 is screwed in the through hole 42. The end part of the positioning pin to be pulled is inserted into the groove, then the fixing bolt 43 is screwed down, the positioning pin can be fixed, and finally the piston rod 11 is driven to move upwards through the handle 24, so that the positioning pin can be pulled out quickly; and quick fixing and pulling out of positioning pins with different sizes can be realized.

Still preferably, the bottom end of the piston rod 11 is formed with an external thread, and the top of the pin pulling head 4 is formed with a fit, so as to facilitate the detachable connection between the pin pulling head 4 and the piston rod 11.

The utility model relates to a hydraulic pressure pulls out round pin device's theory of operation: when the device is used, the positioning pin is arranged in the groove 41 on the pin pulling head 4, the fixing bolt 43 is screwed, the positioning pin is fixed in the groove 41, and the supporting leg 3 is adjusted to a proper height; (1) the handle 24 is pressed down manually downwards to serve as a force arm, the lever principle is utilized, the piston rod 11 can move upwards by applying small force, the pin pulling head 4 is further driven to move upwards, the positioning pin on the slot is pulled out under the condition of electric failure, and (2) hydraulic oil is respectively fed into the two openings 13 and is discharged out of the two openings, the piston rod 11 moves up and down through hydraulic control, and therefore the positioning pin is pulled out.

The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the above preferred embodiments, but the present invention is not limited to the above embodiments, and any skilled person familiar with the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, but all the technical matters of the present invention are within the scope of the technical solution of the present invention.

It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the range that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention.

Claims

1. A hydraulic pin puller, comprising: the piston rod is inserted in the cylinder body and can axially move along the cylinder body, two ends of the piston rod are exposed out of the cylinder body, the piston arranged in the cylinder body is fixedly arranged on the piston rod, the piston is arranged in the cylinder body in a sealing mode and divides the cylinder body into a first cavity and a second cavity, two sides of the cylinder body corresponding to the piston are respectively provided with an opening on a cylinder wall, the bottom end of the piston rod is provided with a pin pulling head used for fixing a positioning pin, the top end of the piston rod is connected with the pin pulling assembly, the pin pulling assembly comprises a bearing platform, a connecting piece, a hinge seat and a handle, the bearing platform comprises a fixing portion and a hinge portion, the fixing portion is fixed at the top of the cylinder body, a through hole is formed in the fixing portion, and the piston rod penetrates through the through hole and can axially move along the through hole, the hinge part is hinged with the first end shaft of the connecting piece, the second end of the connecting piece is hinged with the hinge seat, the hinge seat is hinged with the upper end shaft of the piston rod, and the axial direction of a hinge shaft between the hinge part and the connecting piece, the axial direction of a connecting shaft between the connecting piece and the hinge seat and the axial direction of the hinge shaft between the hinge seat and the piston rod are mutually parallel.

2. A hydraulic pin puller as set forth in claim 1, wherein: the handle spiro union in articulated seat, handle one end is formed with the external screw thread, be formed with on the articulated seat cooperate in the internal thread hole of external screw thread.

3. A hydraulic pin puller as set forth in claim 1, wherein: the piston rod is connected with the cylinder body in a sliding and sealing mode, the piston rod is connected with the cylinder body in a sliding and sealing mode through a sealing structure, and the sealing structure comprises a rubber gasket fixedly arranged on the top of the cylinder body.

4. A hydraulic pin puller as set forth in claim 1, wherein: the supporting legs are evenly distributed at the bottom of the cylinder body in the circumferential direction.

5. A hydraulic pin drawing device according to claim 4, wherein: the supporting legs are L-shaped, one end of each L-shaped supporting leg is fixedly connected with the outer wall of the cylinder body, and the other end of each L-shaped supporting leg is provided with a telescopic part.

6. A hydraulic pin puller as set forth in claim 1, wherein: the pin pulling head comprises a groove matched with the positioning pin, a through hole is formed in the side face of the groove, and a fixing bolt used for fixing the positioning pin is screwed in the through hole.