CN211890622U

CN211890622U - Rotary crown block pulley puller

Info

Publication number: CN211890622U
Application number: CN202020254352.0U
Authority: CN
Inventors: 唐琳; 巴红明; 陈龙; 武峰; 尹成帅; 刘建钊; 王晓亮; 陈建东; 倪友君; 朱海彬
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-03-01
Filing date: 2020-03-01
Publication date: 2020-11-10
Anticipated expiration: 2030-03-01

Abstract

The utility model discloses a rotary crown block pulley puller, which is used for replacing the prior taking-out tool to achieve the purposes of reducing the difficulty of taking-out operation and improving the operation efficiency and the safety; a pair of positioning blocks, a positioning block I and a positioning block II are welded on the upper surface of the platform, guide grooves are formed in the positioning blocks I and the positioning blocks II along the longitudinal direction, and the guide grooves are matched with the legs of the U-shaped support; a threaded hole is transversely formed in the middle of the U-shaped support, and a screw rod is arranged through the threaded hole; the two sides of the U-shaped bracket are both provided with a grasping component along the transverse direction, and the grasping component is provided with a right-angle working part.

Description

Rotary crown block pulley puller

Technical Field

The utility model relates to a device to the driving force direct action on load surface specifically is to relate to a rotary type overhead traveling crane pulley pulls out trochus.

Background

The pulley block of the crown block is aged or deformed after being used for a long time, so that dangerous accidents such as clamping grooves or groove separation of steel wire ropes are easily caused, and therefore workers need to overhaul the crown block pulley regularly, and in the overhauling process, the workers need to take down the pulleys one by one and dredge and clean a butter channel by using a steel wire; for a part of scrapped crown blocks seriously damaged, the working personnel also need to replace the pulleys because the crown blocks cannot be used continuously.

Under above-mentioned two kinds of circumstances, the staff all need take off the pulley and maintain or change, but, because the compact type of wheel hub and bearing, it is great to the assembly pulley operation degree of difficulty that disintegrates, and at present, the mode of general use utilizes sledgehammer and iron bar cooperation ejecting with the pulley, and the operation process has the drawback of wasting time and energy, uses the sledgehammer not only to damage the pulley easily moreover, still causes the bodily injury accident easily.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a rotary type overhead traveling crane pulley pulls out trochus uses this to pull out trochus and replaces current instrument of taking out, reaches to reduce and takes out the operation degree of difficulty, improves the purpose of operating efficiency and security.

The technical scheme is as follows: the utility model provides a rotary type overhead traveling crane pulley pulls out trochus, characterized by: the device comprises a platform, wherein a U-shaped bracket with limited transverse displacement is erected at the upper part of the platform; a pair of positioning blocks, a positioning block I and a positioning block II are welded on the upper surface of the platform, guide grooves are formed in the positioning blocks I and the positioning blocks II along the longitudinal direction, and the guide grooves are matched with the legs of the U-shaped support; a threaded hole is formed in the middle of the U-shaped support along the transverse direction, and a screw rod is arranged through the threaded hole; and two sides of the U-shaped bracket are provided with grasping components along the transverse direction, and the grasping components are provided with right-angle working parts.

Further, the central line of the screw rod is superposed with the central line of the shaft of the pulley block.

Furthermore, the grasping component comprises a positioning claw with limited transverse displacement and a variable-angle claw movably connected with the positioning claw through a rotating shaft, and the right-angle working part is arranged at the tail part of the variable-angle claw.

Furthermore, rectangular holes are formed in the two sides of the U-shaped support in the transverse direction, and the positioning pull claws are clamped on the side faces of the U-shaped support through positioning pins after penetrating through the rectangular holes.

Furthermore, an arc-shaped groove is formed in the side face of the U-shaped support along the longitudinal direction, and the arc-shaped groove can be matched with the positioning pin.

Has the advantages that: the utility model discloses a through rotating the screw rod, thereby utilize when utilizing the thrust of screw rod promptly the subassembly to make the pulley axial displacement appear and take off the pulley, compare with the current operation mode that uses instruments such as sledgehammer to take out the pulley, have labour saving and time saving, the degree of difficulty is low, efficient, the outstanding advantage of security height, and this utility model simple structure, easy preparation.

Drawings

FIG. 1 is a schematic elevation structure of the utility model;

figure 2 is a side view of the utility model;

fig. 3 is a top view of the utility model.

Description of reference numerals:

1. a rotating shaft; 2. a platform; 3. a grasping assembly; 3a, variable angle pulling claws; 3b, positioning and pulling claws; 3c, a right-angle working part; 4. a U-shaped bracket; 5. a screw; 6. a guide groove; 7a, a positioning block I; 7b, a positioning block II; 8. an arc-shaped slot; 9. positioning pins; 10. a rectangular hole; 11. a threaded hole; 12. a pulley; 13. a shaft.

Detailed Description

The embodiments of the invention will be described in detail below with reference to fig. 1 to 3, but the invention can be implemented in many different ways as defined and covered by the claims.

It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed, unless otherwise specified, and all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

With reference to fig. 1 to 3, the rotary crown block pulley extractor provided by the present invention comprises a platform 2, wherein a U-shaped support 4 with limited lateral displacement is erected on the upper portion of the platform 2; a pair of positioning blocks, a positioning block I7 a and a positioning block II 7b are welded on the upper surface of the platform 2, guide grooves 6 are formed in the positioning blocks I7 a and the positioning blocks II 7b along the longitudinal direction, and the guide grooves 6 can be matched with the legs of the U-shaped support 4; a threaded hole 11 is formed in the middle of the U-shaped support 4 along the transverse direction, and a screw 5 penetrates through the threaded hole 11; the U-shaped bracket 4 is provided with a grasping component 3 at two sides along the transverse direction, and the grasping component 3 is provided with a right-angle working part 3 c.

According to the structure of the above embodiment, it can be seen that, since the grasping assembly 3 has the right-angle working portion 3c, when the right-angle inner side surface of the right-angle working portion 3c is fitted to the side surface of the pulley 12 and lateral displacement occurs, the pulley 12 and the shaft 13 can be caused to move relatively, and this relative movement is realized by rotating the screw 5, and in a specific operation process, when a worker rotates the screw 5 using a tool such as a pipe wrench, the screw 5 can push the shaft 13 to move because the lateral displacement of the U-shaped bracket 4 is limited, and the grasping assembly 3 connected to the U-shaped bracket 4 grasps the pulley 12, so that the pulley 12 and the shaft 13 move relatively until being removed.

With reference to fig. 1 to 3, the central line of the screw 5 coincides with the central line of the shaft 13 of the pulley block.

The utility model discloses an in above-mentioned embodiment, the central line coincidence of the central line of screw rod 5 and the axle 13 of assembly pulley can make the outer fringe of screw rod 5 and the outer fringe of axle 13 form the concentric circles, just so makes grasping the subassembly 3 of the both sides of U-shaped support 4 to the even application of force of pulley 12, reaches the laborsaving purpose of operation.

With reference to fig. 1 to 3, the grasping assembly 3 includes a positioning claw 3b limited in lateral displacement and a variable angle claw 3a movably connected to the positioning claw 3b through a rotating shaft 1, and the right angle working portion 3c is disposed at a tail portion of the variable angle claw 3 a.

The utility model discloses an in the above-mentioned embodiment, grasping assembly 3 uses the combination formula design, can be convenient for the staff to this utility model dismantle and change, prolong this utility model's life, specifically speaking, when right angle work portion 3c appears damaging or the condition of deformation after long-time work, the staff only need change a variable angle claw 3a can.

In addition, due to the characteristics of the variable-angle claws 3a, when the worker places the pulley block on the platform 2, the variable-angle claws 3a can be separated outward, and after placing the pulley block on the platform 2, the variable-angle claws 3a are rotated inward, which facilitates the right-angled working portions 3c of the variable-angle claws 3a to act on the side surfaces of the pulley 12.

With reference to fig. 1 to 3, rectangular holes 10 are transversely formed in both sides of the U-shaped bracket 4, and the positioning pull claw 3b is clamped on the side surface of the U-shaped bracket 4 by a positioning pin 9 after passing through the rectangular holes 10.

The utility model discloses an in the above-mentioned embodiment, preferred location pawl 3b is connected through locating pin 9 with U-shaped support 4, and this embodiment still possesses the advantage of being convenient for to maintain and change except possessing simple to operate's advantage, is favorable to prolonging this utility model's life.

With reference to fig. 1 to 3, an arc-shaped groove 8 is longitudinally formed in a side surface of the U-shaped bracket 4, and the arc-shaped groove 8 can be matched with the positioning pin 9.

The utility model discloses an in the above-mentioned embodiment, arc 8 and locating pin 9 complex embodiment can guarantee that locating pin 9 can not follow the side removal of U-shaped support 4, in the concrete manufacture process, should make the bore of arc 8 be greater than the diameter of locating pin 9 for locating pin 9 can imbed completely among the arc 8.

To sum up, this utility model realizes pulley 12 and axle 13's relative movement through rotating screw rod 5, and with the instrument contrast of current use, has the laborsaving operation, the high advantage of security, and this utility model's a plurality of components all are swing joint moreover, therefore still have the change of being convenient for, advantage that the live time limit is long.

The above only is the preferred embodiment of the utility model discloses, is not used for limiting the utility model discloses, to the technical personnel in this field, the utility model discloses can have multiple change and change, all according to the utility model discloses any modification, the equivalent transform etc. that technical scheme was done, the effect of its function and production does not surpass the utility model discloses a technical scheme's scope is all regarded as the utility model discloses a protection scope.

Claims

1. The utility model provides a rotary type overhead traveling crane pulley pulls out trochus, characterized by: the device comprises a platform, wherein a U-shaped bracket with limited transverse displacement is erected at the upper part of the platform; a pair of positioning blocks, a positioning block I and a positioning block II are welded on the upper surface of the platform, guide grooves are formed in the positioning blocks I and the positioning blocks II along the longitudinal direction, and the guide grooves are matched with the legs of the U-shaped support; a threaded hole is formed in the middle of the U-shaped support along the transverse direction, and a screw rod is arranged through the threaded hole; and two sides of the U-shaped bracket are provided with grasping components along the transverse direction, and the grasping components are provided with right-angle working parts.

2. A rotary crown block sheave puller according to claim 1, further comprising: the central line of the screw is superposed with the central line of the shaft of the pulley block.

3. A rotary crown block sheave puller according to claim 1, further comprising: the grasping assembly comprises a positioning pulling claw with limited transverse displacement and a variable-angle pulling claw movably connected with the positioning pulling claw through a rotating shaft, and the right-angle working part is arranged at the tail part of the variable-angle pulling claw.

4. A rotary crown block sheave puller according to claim 3, further comprising: rectangular holes are formed in the two sides of the U-shaped support in the transverse direction, and the positioning pull claws penetrate through the rectangular holes and are clamped on the side faces of the U-shaped support through positioning pins.

5. A rotary crown block sheave puller according to claim 4, further comprising: and an arc-shaped groove is formed in the side surface of the U-shaped support along the longitudinal direction and can be matched with the positioning pin.