CN215358221U

CN215358221U - Pin puller

Info

Publication number: CN215358221U
Application number: CN202120498243.8U
Authority: CN
Inventors: 刘洋; 孙纪光; 杨海星
Original assignee: DATANG CHENCUN HYDROPOWER PLANT
Current assignee: DATANG CHENCUN HYDROPOWER PLANT
Priority date: 2021-03-09
Filing date: 2021-03-09
Publication date: 2021-12-31
Anticipated expiration: 2031-03-09

Abstract

The utility model provides a pin puller, belonging to the technical field of mechanical devices; the pin puller comprises a screw rod, a backing ring is sleeved on the outer side of the screw rod, a hollow hydraulic cylinder is arranged at the top of the backing ring, a gland is arranged at the top of the hollow hydraulic cylinder, and a nut connected with the screw rod in a rotating mode is arranged at the top of the gland. Above-mentioned scheme, pin puller adopts hydraulic means as the power supply, and it is big to play to pull out the strength, and plays to pull out in-process pin atress at the uniform velocity, can not bounce and hinder the people, and is comparatively safe, can accomplish pin pulling out the operation safely, high-efficiently, and greatly reduced repair personnel's intensity of labour improves pin pulling out efficiency, strengthens the security that the process was pulled out to the pin, pin puller is applicable to the work of pulling out of all kinds of pins, and the advantage is obvious when the operation is pulled out to the difficult heavy pin of pulling out of contrast.

Description

Pin puller

Technical Field

The utility model relates to the technical field of mechanical devices, in particular to a pin puller.

Background

The pin pull-out is typically involved in the mechanical production, installation and repair processes. Small-size pin uses lead screw and nut combination to pull out usually, when utilizing the nut rotatory, forces the pulling force that the screw rod produced to drive the pin and pull out, whole process is manual operation entirely, and work efficiency is low, wastes time and energy, only is applicable to less and the loose pin of cooperation. There are also manual pullers on the market for pulling small pins, but they are only suitable for pins with small size and loose fit, and there is no way to touch pins that are difficult to pull. The large pin usually uses the lead screw to cooperate chain block to pull out, utilizes the pulling force of chain block to drive the pin and pulls out, and when the in-service use, chain block's use need arrange hoisting point and very big operating space, and service conditions are restricted, and chain block chain is easy to bounce in the twinkling of an eye that the pin was pulled out to cause the injury of personnel or equipment, very dangerous, if the hoisting point is improper still probably to pull the pin.

Therefore, the pins which are too tight in clearance fit, long in installation period or bad in working environment and generate rust are difficult to pull and disassemble, and especially when some large pins are matched with the chain block to be disassembled, potential safety hazards can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a pin puller to solve the problem that the existing pulling device is difficult to safely and efficiently pull out pins with too tight clearance fit or larger sizes.

In order to solve the technical problems, the utility model provides the following technical scheme:

the utility model provides a pin pull-out ware, includes the lead screw, the outside cover of lead screw is equipped with the backing ring, the top of backing ring is provided with hollow hydraulic cylinder, hollow hydraulic cylinder's top is provided with the gland, the top of gland be provided with the nut that the lead screw connects soon.

The gland is disc-shaped, and the middle part of the gland is provided with a through hole for the screw rod to pass through.

Wherein, the hollow hydraulic cylinder is connected with the hydraulic pump.

The cushion ring comprises a side wall and an upper end face, and a through hole for the screw rod to pass through is formed in the middle of the upper end face.

Wherein the inner diameter of the backing ring is 50mm or 100 mm.

Wherein the nominal diameter of the screw rod is 8mm, 10mm, 12mm, 14mm, 16mm or 20 mm.

Wherein, the length of silk pole is 350 mm.

Wherein the strength of the screw rod is 8.8 grades.

The technical scheme of the utility model has the following beneficial effects:

in the above scheme, pin pull-out ware adopts hydraulic means as the power supply, and it is big to play to pull out the strength, and plays to pull out in-process pin atress at the uniform velocity, can not bounce and hinder the people, and is comparatively safe, can accomplish pin pull-out operation safely, high-efficiently, and greatly reduced repair personnel's intensity of labour improves pin pull-out efficiency, strengthens the security that the process was pulled out to the pin.

Drawings

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

FIG. 2 is a front view of the gland of the present invention;

FIG. 3 is a top view of the gland of the present invention;

FIG. 4 is a front view of the grommet of the present invention;

fig. 5 is a top view of the grommet of the present invention.

[ reference numerals ]

1. A screw rod;

2. a backing ring;

3. a hollow hydraulic cylinder;

4. a gland;

5. and a nut.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 5, an embodiment of the present invention provides a pin extractor, including a screw rod 1, a backing ring 2 is sleeved outside the screw rod 1, a hollow hydraulic cylinder 3 is disposed at the top of the backing ring 2, a gland 4 is disposed at the top of the hollow hydraulic cylinder 3, and a nut 5 screwed to the screw rod 1 is disposed at the top of the gland 4.

As shown in fig. 3, the pressing cover 4 is disc-shaped, and a through hole for the screw rod 1 to pass through is formed in the middle of the pressing cover.

As shown in fig. 1, the hollow hydraulic cylinder 3 is sleeved on the screw rod 1 and is movably connected with the screw rod 1. The hollow hydraulic cylinder 3 is connected with a hydraulic pump, the hydraulic pump is used for providing a pressure oil source for the hollow hydraulic cylinder 3, and particularly, the hydraulic pump can be adapted to a manual hydraulic pump or an electric hydraulic pump according to conditions.

In this embodiment, the hollow hydraulic cylinder 3 is a hydraulic jack and a hydraulic pump matched with the hydraulic jack.

As shown in fig. 4, the backing ring 2 includes a side wall and an upper end surface, and a through hole for the screw rod 1 to pass through is formed in the middle of the upper end surface.

In this embodiment, the inner diameter of the backing ring 2 is 50mm or 100 mm. The backing ring 2 can be used as a base to support the hollow hydraulic cylinder 3, and can be used for separating the pin from the hollow hydraulic cylinder 3 to provide a lifting space for pulling the pin.

The screw rod 1, the backing ring 2, the hollow hydraulic cylinder 3 and the hydraulic pump can be matched with different specification parameters according to requirements.

Preferably, the nominal diameter of the screw rod 1 is 8mm, 10mm, 12mm, 14mm, 16mm or 20mm, so as to be suitable for pulling out pins with different diameters; the length of the screw rod 1 is 350 mm; the strength of the screw rod 1 is 8.8 grades.

The pin puller provided by the utility model has the following working process:

firstly, the external thread at the bottom of the screw rod 1 is connected with the internal thread of the pin body in a screwing mode, then the backing ring 2, the hollow hydraulic cylinder 3 and the gland 4 are sequentially sleeved on the screw rod 1, the gland 4 is locked and fixed through the nut 5 and the gasket, finally, the hydraulic pump is operated to lift the hollow hydraulic cylinder 3, the lifting force of the hollow hydraulic cylinder 3 is transmitted to the screw rod 1 through the gland 4, and therefore the pin is driven to be pulled out.

In the above scheme, pin pull-out ware adopts hydraulic means as the power supply, and it is big to play to pull out the strength, and plays to pull out in-process pin atress at the uniform velocity, can not bounce and hinder the people, and is comparatively safe, can accomplish pin pull-out operation safely, high-efficiently, and greatly reduced repair personnel's intensity of labour improves pin pull-out efficiency, strengthens the security that the process was pulled out to the pin. The pin puller is suitable for pulling various pins, and has obvious advantages when pulling heavy pins which are difficult to pull out.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model as defined in the appended claims.

Claims

1. The pin puller is characterized by comprising a lead screw, wherein a cushion ring is sleeved on the outer side of the lead screw, a hollow hydraulic cylinder is arranged at the top of the cushion ring, a gland is arranged at the top of the hollow hydraulic cylinder, and a nut connected with the lead screw in a screwing mode is arranged at the top of the gland.

2. The pin extractor of claim 1, wherein the gland has a disk shape with a central opening for the screw to pass through.

3. The pin extractor of claim 1, wherein said hollow hydraulic cylinder is connected to a hydraulic pump.

4. The pin extractor according to claim 1, wherein the backing ring comprises a side wall and an upper end surface, and a through hole for the screw rod to pass through is formed in the middle of the upper end surface.

5. The pin extractor of claim 1, wherein the inner diameter of the backing ring is 50mm or 100 mm.

6. The pin extractor of claim 1, wherein the lead screw has a nominal diameter of 8mm, 10mm, 12mm, 14mm, 16mm, or 20 mm.

7. A pin extractor according to claim 6, wherein the length of the said shank is 350 mm.

8. The pin extractor of claim 7, wherein the strength of the lead screw is on the order of 8.8.