CN211220524U

CN211220524U - Puller

Info

Publication number: CN211220524U
Application number: CN201922311619.5U
Authority: CN
Inventors: 崔宇峰; 洪啸虎; 王斌
Original assignee: Army Military Transportation University of PLA Zhenjiang
Current assignee: Army Military Transportation University of PLA Zhenjiang
Priority date: 2019-12-20
Filing date: 2019-12-20
Publication date: 2020-08-11
Anticipated expiration: 2029-12-20

Abstract

The utility model relates to a bearing dismouting technical field, concretely relates to bearing is dismantled special use and is drawn horse. The utility model provides a draw horse, draws claw including drawing seat, lead screw, two, the intermediate position of drawing the seat is equipped with the through-hole, and the through-hole in-connection is equipped with the nut, the nut is two half formula structures, and the left and right halves of nut is connected respectively on drawing the seat, the lead screw penetrates the nut and reciprocates, draw claw upper end knot on drawing the seat. Compared with the prior art, the utility model discloses the beneficial effect who has as follows: the nut is a split nut, so that the screw rod can conveniently return; the pull seat adopts a V-shaped structure, and anti-skid convex points are arranged on the pull seat to prevent the pull claw from slipping; the locking steel wire is arranged to prevent the pulling claw from being separated from the workpiece; the clamping head on the screw rod can be replaced so as to be suitable for disassembling different workpieces; the handle adopts a foldable structure, so that the space is saved.

Description

Puller

Technical Field

The utility model relates to a bearing dismouting technical field, concretely relates to bearing is dismantled special use and is drawn horse.

Background

The two-jaw puller is a tool often used in equipment maintenance work to separate the bearing from the support shaft. The essence of the puller is a screw pair consisting of a screw rod and a nut, the nut is usually changed into a wing shape and symmetrically distributed on two sides, and two pulling claws are connected through a hinge mechanism. One end of the pull claw is provided with a right-angle hook, and the other end of the pull claw is provided with an arc-shaped hook, so that the pull claw can be used for hooking the edge of a part to be disassembled and can adjust the direction according to the working requirement. When the puller is used for removing shaft sleeve type parts, the claw hook end is inserted into a gap between the bearing seat and the equipment rack, the rear part of the bearing seat is hooked, and then the screw rod is rotated until the tip of the screw rod is contacted with the center of the shaft end. According to the principle of screw transmission, the rotation of the screw rod is converted into the linear motion of the wing nut, and the pulling claw is applied with pulling force through the hinge mechanism, so that the bearing seat is pulled down from the shaft.

In the patent application with publication number CN 103753490A, disclose a draw horse, kind draw the horse, including drawing the seat, setting up at the lead screw that draws the seat center to and the equipartition draws the claw drawing at least three in a seat circumference, draw the seat center and offer the through-hole that is used for wearing to establish the lead screw, it is provided with annular location boss to draw seat bottom outer fringe, draw the claw to include that positioning mechanism, middle part pole and the lower part at top draw the claw, draw claw top positioning mechanism inlay and adorn in draw on the location boss of seat bottom. The puller can be used for adjusting the range of the pulling claw, and the application range of the puller is widened.

In the use of current manual puller, the puller is in the use, and when the bearing can not be drawn out, the lead screw can block on the bearing, hardly takes off.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the puller is clamped on a workpiece and then is quickly taken down.

The utility model aims at designing a horse drawing convenient to kick-back fast. Based on this purpose, the utility model discloses a technical scheme as follows:

the utility model provides a draw horse, draws claw including drawing seat, lead screw, two, the intermediate position of drawing the seat is equipped with the through-hole, and the through-hole in-connection is equipped with the nut, the nut is two half formula structures, and the left and right halves of nut is connected respectively on drawing the seat, the lead screw penetrates the nut and reciprocates, draw claw upper end knot on drawing the seat.

Furthermore, the pull seat comprises a first pull plate and a second pull plate, an included angle between the first pull plate and the second pull plate is larger than 150 degrees and smaller than 180 degrees, and the through hole is formed in the crossed position of the first pull plate and the second pull plate.

Furthermore, the upper surface of the pull seat is provided with anti-skidding salient points.

Further, the upper end of lead screw is connected and is equipped with the handle, the handle is folded cascade structure.

Furthermore, the lower extreme of lead screw is connected and is equipped with the dop, dop and lead screw can be dismantled and be connected.

Further, draw the claw to include fixed part and movable part, the fixed part is connected on drawing the seat, the movable part with the fixed part hub connection.

Furthermore, the wire rope is wound around the clamping part of the pulling claw and then wound at one end of the pulling seat.

Furthermore, one end of the pull seat is connected with a winding shaft, and the steel wire rope is wound on the winding shaft.

Compared with the prior art, the utility model discloses the beneficial effect who has as follows:

(1) the nut is a split nut, so that the screw rod can conveniently return;

(2) the pull seat adopts a V-shaped structure, and anti-skid convex points are arranged on the pull seat to prevent the pull claw from slipping;

(3) the locking steel wire is arranged to prevent the pulling claw from being separated from the workpiece;

(4) the clamping head on the screw rod can be replaced so as to be suitable for disassembling different workpieces;

(5) the handle adopts a foldable structure, so that the space is saved.

Drawings

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

fig. 2 is a schematic structural view of the nut 4 when fixed;

in the figure, 1-a pull seat, 11-a first pull plate, 12-a second pull plate, 13-an anti-skid salient point, 14-a winding shaft, 2-a screw rod, 3-a pull claw, 31-a fixed part, 32-a movable part, 4-a nut, 41-a fixed screw, 5-a handle, 6-a chuck and 7-a steel wire rope.

Detailed Description

The present invention will be further described with reference to the following examples and accompanying drawings.

Example 1

As shown in figure 1, the puller comprises a pulling seat 1, a screw rod 2 and two pulling claws 3, wherein a through hole is formed in the middle of the pulling seat 1, a nut 4 is connected and arranged in the through hole, the nut 4 is of a two-half structure, the left half and the right half of the nut 4 are respectively connected to the pulling seat 1, the screw rod 2 penetrates through the nut 4 to move up and down, and the upper ends of the pulling claws 3 are buckled on the pulling seat 1.

As shown in figure 2, two halves of the nut 4 are respectively connected on the pull seat 1 through fixing screws 41, when the screw rod and the bearing are separated, the screws fixed on the pull seat 1 are loosened, so that the screw rod can be quickly taken out.

Specifically, in order to prevent the puller from opening towards two sides of the puller in the using process, the puller 1 comprises a first pulling plate 11 and a second pulling plate 12, an included angle between the first pulling plate 11 and the second pulling plate 12 is larger than 150 degrees and smaller than 180 degrees, and a through hole is formed in the crossed position of the first pulling plate 11 and the second pulling plate 12. Even if the puller is used, the pulling claw 3 only moves inwards when moving along the pulling seat, and the use is not affected.

Specifically, in order to better prevent the pulling claw 3 from moving on the pulling seat 1, the upper surface of the pulling seat 1 is provided with anti-slip bumps 13.

Specifically, the manual puller needs to manually rotate the screw rod 2, and the screw rod 2 moves downwards to be pushed against the shaft. The upper end of the screw rod 2 is connected with a handle 5, and the handle 5 is of a foldable structure for saving space and particularly facilitating the use of narrow and small positions in some spaces. The handle 5 is divided into 2 parts, and the 2 parts are connected through a shaft.

Specifically, the lower end of the screw rod 2 is connected with a clamping head 6, and the clamping head 6 is detachably connected with the screw rod 2. The clamping head 2 is used for being propped against a shaft to be disassembled, the clamping head 6 is detachably connected with the screw rod 2, and the clamping head is convenient to replace so as to be suitable for shafts of different models and structures

Specifically, the pulling claw 3 comprises a fixed part 31 and a movable part 32, the fixed part 31 is connected to the pulling seat 1, and the movable part 32 is connected with the fixed part 31 through a shaft. The movable portion 32 rotates along the fixed portion to adjust the distance between the pulling claws, and the applicability is better.

The steel wire rope pulling device specifically comprises a steel wire rope 7, wherein the steel wire rope 7 winds around one end of the pulling seat 1 after bypassing the clamping part of the pulling claw 3. One end of the pull seat 1 is connected with a winding shaft 14, and the steel wire rope 7 is wound on the winding shaft 14. The wire rope is used for fixing the two pulling claws 3, and one end of the wire rope 7 is wound on the winding shaft 14.

The working process of the utility model is as follows:

when the wire rope pulling device is used, the handle 5 is held to rotate the screw rod 2, the clamping head 6 is pushed against the shaft, the two pulling claws 3 hook the edge of a part to be dismounted, and the wire rope 7 bypasses the pulling claws 3 and then winds on the winding shaft 14 to prevent the pulling claws 3 from loosening.

When the screw rod 2 is clamped on the shaft, the fixing screw of the nut 4 is loosened, the screw teeth of the nut 4 and the screw rod 2 are accordingly loosened, and the screw rod 2 can be smoothly taken down.

Finally, it should be noted that: the above embodiments are only used for illustrating the present invention and do not limit the technical solution described in the present invention; thus, while the present invention has been described in detail with reference to the various embodiments thereof, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted; all such modifications and variations are intended to be included herein within the scope of this disclosure and the present invention and within the scope and spirit of the following claims.

Claims

1. The utility model provides a draw horse, draws claw (3) including drawing seat (1), lead screw (2), two, its characterized in that: draw the intermediate position of seat (1) to be equipped with the through-hole, the through-hole in-connection is equipped with nut (4), nut (4) are two halves formula structures, and the left and right halves of nut (4) are connected respectively and are being drawn seat (1), lead screw (2) penetrate nut (4) and reciprocate, draw claw (3) upper end to detain on drawing seat (1).

2. The puller according to claim 1, wherein: the pull seat (1) comprises a first pull plate (11) and a second pull plate (12), an included angle between the first pull plate (11) and the second pull plate (12) is larger than 150 degrees and smaller than 180 degrees, and the through hole is formed in the crossed position of the first pull plate (11) and the second pull plate (12).

3. The puller according to claim 2, wherein: the upper surface of the pull seat (1) is provided with anti-skid salient points (13).

4. The puller according to claim 1, wherein: the upper end of the screw rod (2) is connected with a handle (5), and the handle (5) is of a foldable structure.

5. The puller according to claim 1, wherein: the lower end of the screw rod (2) is connected with a clamping head (6), and the clamping head (6) is detachably connected with the screw rod (2).

6. The puller according to claim 1, wherein: draw claw (3) including fixed part (31) and movable part (32), fixed part (31) are connected on drawing seat (1), movable part (32) with fixed part (31) hub connection.

7. The puller according to claim 6, wherein: the steel wire rope (7) is wound around the clamping part of the pull claw (3) and then wound at one end of the pull seat (1).

8. The puller according to claim 7, wherein: one end of the pull seat (1) is connected with a winding shaft (14), and a steel wire rope (7) is wound on the winding shaft (14).