CN216030573U

CN216030573U - Adjustable puller

Info

Publication number: CN216030573U
Application number: CN202122318500.8U
Authority: CN
Inventors: 李先德
Original assignee: Wenzhou Beiruide Precision Metal Co ltd
Current assignee: Wenzhou Beiruide Precision Metal Co ltd
Priority date: 2021-09-24
Filing date: 2021-09-24
Publication date: 2022-03-15
Anticipated expiration: 2031-09-24

Abstract

The utility model discloses an adjustable puller, which comprises a supporting part, wherein a first screw rod is arranged in the middle of the supporting part, a second screw rod is arranged on the supporting part, and the other end of the second screw rod is in threaded connection with a pull rod; the other end of the pull rod is provided with a spring, one end of the spring is connected with the clamping plate, and the other end of the spring is connected with the bolt; the clamping plate is provided with an arc groove; the device drives the clamping plate to move by utilizing the rotation of the first screw rod, so that the device can take down the bearing on the shaft; meanwhile, the distance between the pull rod and the supporting part can be adjusted by rotating the second screw rod, so that the drawing distance of the device is adjusted; utilize the circular arc groove on the splint and the laminating of axial plane for the device can follow the root of bearing and draw the operation, and more steady when making the bearing pulled out utilizes the spring to promote the laminating of splint and axial plane in addition and makes the device both can take off the bearing of different diameters, can make the splint further again with the root laminating of bearing.

Description

Adjustable puller

Technical Field

The utility model relates to the technical field of mechanical maintenance equipment, in particular to an adjustable puller.

Background

The puller is a removal tool for separating the bearing from the shaft. When the bearing pulling device is used, the three pulling feet hook the bearing, and then the ejector rod with the screw thread is rotated, so that the bearing is slowly pulled out of the shaft. The extension range of the traditional puller is determined by the diameter of a circle where three pulling feet are located, the extension distance is determined by the lengths of the pulling feet and the screw rods, the universality of the same puller on objects with different sizes is poor, a plurality of pullers are usually needed to complete one type of work, the working efficiency is low, and the workload is large.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an adjustable puller to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: an adjustable puller comprises a supporting part, wherein the middle part of the supporting part is in threaded fit with a first screw; two ends of the supporting part are in threaded connection with a second screw, and the other end of the second screw is in threaded connection with a pull rod; the middle part of the second screw is provided with a screw cap which is convenient for driving the second screw to rotate; one end of the pull rod is provided with a first internal threaded hole in threaded connection with the second screw rod, and the other end of the pull rod is provided with an abutting part for abutting against a bearing surface; a screw hole is formed in the abutting part, one end of the screw hole is connected with the cylindrical shaft in a sliding mode, and the other end of the screw hole is connected with a bolt in a threaded mode; a spring is arranged between the cylindrical shaft and the bolt; one end of the cylindrical shaft, which is far away from the spring, is also provided with a clamping plate, and the clamping plate is provided with an arc groove which is attached to the shaft surface.

As a preferred technical scheme of the utility model: still be equipped with the step face on the supporting part to sliding connection has the slider on the step face, the slider with second screw rod threaded connection.

As a preferred technical scheme of the utility model: the supporting part is in threaded fit with the second screw through a second internal thread hole.

As a preferred technical scheme of the utility model: the outer diameter of the bolt is equal to the inner diameter of the screw hole.

By adopting the technical scheme, the utility model has the beneficial effects that: 1. the device drives the clamping plate to move by utilizing the rotation of the first screw rod, so that the device can take down the bearing on the shaft; meanwhile, the distance between the pull rod and the supporting part can be adjusted by rotating the second screw rod, so that the drawing distance of the device is adjusted;

2. the arc groove on the clamping plate is attached to the shaft surface, so that the device can perform drawing operation from the root of the bearing, and the bearing is more stable when being pulled out;

3. the device can take off bearings with different diameters by utilizing the spring to push the clamping plate to be attached to the shaft surface, and can further attach the clamping plate to the root of the bearing, so that the problem that the puller is easy to unhook when the bearing is pulled is solved.

Drawings

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

FIG. 2 is a schematic view of the main structure of the slider;

fig. 3 is a schematic view of the main structure of the pull rod of the present invention.

In the figure: 1. a first screw; 2. a support portion; 3. a second screw; 4. a step surface; 5. a bolt; 6. a nut; 7. a pull rod; 8. a spring; 9. a contact part; 10. a cylindrical shaft; 11. an arc groove; 12. a splint; 13. a screw hole; 14. a first internally threaded bore; 15. a second internally threaded bore; 16. a slide block.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "upper surface", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-3, an embodiment of the present invention is shown: an adjustable puller comprises a supporting part 2, wherein the middle part of the supporting part 2 is in threaded fit with a first screw 1; rotating the first screw 1 such that the support 2 can move up and down on the first screw 1, e.g. rotating the first screw 1 clockwise, when the support 2 is moving towards the user, and when the first screw 1 is rotated counter clockwise, the support 2 is moving away from the user;

two ends of the supporting part 2 are in threaded connection with a second screw 3, and the other end of the second screw 3 is in threaded connection with a pull rod 7; the two second screw rods 3 are arranged, and the pull rods 7 can be symmetrically arranged on two sides of the supporting part 2, so that when the first screw rods 1 rotate, the bearing is uniformly stressed and moves along with the two pull rods 7;

the nut 6 is arranged in the middle of the second screw rod 3 and is convenient for driving the second screw rod 3 to rotate, and the distance between the pull rod 7 and the supporting part 2 can be adjusted by utilizing the rotation of the nut 6, so that the device can draw bearings with different depths, and particularly, when the first screw rod 1 rotates to the upper limit, the second screw rod 3 can be rotated at the moment, and the bearings can be further conveniently taken down;

one end of the pull rod 7 is provided with a first internal threaded hole 14 in threaded connection with the second screw rod 3, the other end of the pull rod 7 is provided with an abutting part 9 for abutting against a bearing surface, the abutting part 9 is used for contacting with the bearing surface, then the first screw rod 1 or the second screw rod 3 is rotated, and the bearing is taken down from the shaft;

in order to enable the device to be suitable for being taken down by bearings with different diameters, a screw hole 13 is formed in the interference part 9, one end of the screw hole 13 is connected with the cylindrical shaft 10 in a sliding mode, and the other end of the screw hole 13 is connected with a bolt 5 in a threaded mode; a spring 8 is arranged between the cylindrical shaft 10 and the bolt 5, and the cylindrical shaft 10 can be abutted against shaft surfaces with different diameters by utilizing the extension and contraction of the spring 8, so that the device is not easy to unhook;

in order to further avoid the unhooking phenomenon of the device, a clamping plate 12 is further arranged at one end, away from the spring 8, of the cylindrical shaft 10, and an arc groove 11 attached to the shaft surface is formed in the clamping plate 12.

In order to further enlarge the drawing distance of the device, a step surface 4 is further arranged on the supporting part 2, a slide block 16 is connected on the step surface 4 in a sliding mode, the slide block 16 is in threaded connection with the second screw rod 3, and the distance between the supporting part 2 and the pull rod 7 is enlarged through the slide block 16, so that the drawing distance of the device is further increased.

Because the supporting part 2 is in threaded fit with the second screw rod 3 through the second internal threaded hole 15, the rotation of the second screw rod 3 is reliable and stable.

Since the outer diameter of the bolt 5 is equal to the inner diameter of the screw hole 13, the bolt 5 can be completely positioned in the screw hole 13, and the space occupation of the bolt 5 is reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, and the scope of protection is still within the scope of the utility model.

Claims

1. An adjustable puller is characterized in that: the screw rod support comprises a support part (2), wherein the middle part of the support part (2) is in threaded fit with a first screw rod (1);

two ends of the supporting part (2) are in threaded connection with a second screw (3), and the other end of the second screw (3) is in threaded connection with a pull rod (7);

the middle part of the second screw rod (3) is provided with a screw cap (6) which is convenient for driving the second screw rod (3) to rotate;

one end of the pull rod (7) is provided with a first internal threaded hole (14) in threaded connection with the second screw (3), and the other end of the pull rod (7) is provided with an abutting part (9) for abutting against a bearing surface;

a screw hole (13) is formed in the abutting part (9), one end of the screw hole (13) is connected with a cylindrical shaft (10) in a sliding mode, and the other end of the screw hole (13) is connected with a bolt (5) in a threaded mode; a spring (8) is arranged between the cylindrical shaft (10) and the bolt (5);

one end of the cylindrical shaft (10), which is far away from the spring (8), is also provided with a clamping plate (12), and the clamping plate (12) is provided with an arc groove (11) which is attached to the shaft surface.

2. An adjustable puller as set forth in claim 1, wherein: still be equipped with step face (4) on supporting part (2), and sliding connection has slider (16) on step face (4), slider (16) with second screw rod (3) threaded connection.

3. An adjustable puller as set forth in claim 2, wherein: the supporting part (2) is in threaded fit with the second screw rod (3) through a second internal threaded hole (15).

4. An adjustable puller as set forth in claim 1 or claim 2 or claim 3, in which: the outer diameter of the bolt (5) is equal to the inner diameter of the screw hole (13).