TWM471956U - Tool for detaching vehicle pulley - Google Patents

Description

Pulley removal tool

The present invention relates to a technical field of a pulley removal tool, and more particularly to a pulley removal tool that can easily and quickly detach a multi-groove pulley from an axle.

A conventional conventional pulley removal tool, as shown in the Taiwan Patent No. M315636, is used in that it is necessary to first pivot the bolt to the central axis of the front axle, and then loosen the bolt on one of the clamp arms, and The bolt has been loosened by the clamping arm on the mast to cause the plurality of buckles to be engaged in the annular groove on one side of the circumference of the pulley, and then the bolt on the bolt is tightened to position it. Then, the bolts on the other clamp arm are loosened, and then the two clamp arms are respectively axially moved on the mast to move to the annular groove on the opposite side of the circumference of the pulley, and then tightened. The bolt is positioned to fix it, and then the bolt on the other clamp arm is loosened, and the other clamp arm is pushed on the mast so that the plurality of buckles are engaged on the opposite side of the circumference of the pulley. After the annular groove is in the groove, tighten the bolt on it to position it. In this way, the swaying pin can be rotated to the end surface of the axle, thereby forcing the two clamping arms to axially clamp the pulley from the axle to the outer axle to disassemble the pulley from the axle. purpose.

However, the conventional pulley removing tool is required to repeatedly unscrew, tighten, and push the arm when the pulley is disassembled, so that it is very time consuming and laborious in operation. . In particular, the operator can only rely on one hand to sway the center axis of the cock to the front axle, which is very unstable and inaccurate, especially after the operation of loosening, tightening the bolt and pushing the clamp arm with the other hand. The swaying tether is easily disengaged from the alignment position, and the distance between the two clamping arms and the swaying bolt cannot be consistent, so that the swaying bolt cannot be positioned on the central axis of the axle, thus causing its operation. The system needs to be adjusted several times to achieve the correct disassembly position, so the operation is very troublesome and inconvenient.

Conventional pulley removal tools are problematic in terms of operation, use, time, labor, and inconvenience.

The present invention provides a pulley removal tool comprising a guide rod, a two-way screw, two jaws and a plunger. Wherein, the two ends of the guiding rod respectively have a connecting member. The two-way screw is rotatably coupled to the two connecting members, and the two-way screw has two thread segments with opposite spiral directions. One end of the two-way screw passes through the connecting member and the end has a first driving joint. A tool is engaged to rotate it. The two clamping jaws are axially movably coupled to the guiding rod, and the opposite sides of the two clamping jaws respectively have a plurality of clamping portions for being engaged in the annular groove of the circumference of a pulley, and the two clamping members The claws are respectively passed through the two thread segments of the two-way screw in a screwed state. The ram is threaded through the guide rod, one end of which has an abutting top for the top end of the axle, and the other end has a second driving joint for the other The tool is engaged to rotate it.

The pulley removing tool provided by the present invention can rotate the two-way screw to rotate or reverse the first driving joint by rotating the first driving joint with a tool, so that the spiral direction of the two-way screw can be utilized. The threaded relationship between the two threaded segments and the two jaws drives the two jaws to be relatively close to or relatively far apart, so that the plurality of clip portions of the two jaws are simultaneously engaged or disengaged from the opposite sides of the circumference of the pulley. The purpose of the groove, so the operation is very time-saving and labor-saving. In particular, when the two claws in the opposite direction of the spiral direction of the two-way screw are in relative relationship with the screwing relationship of the two jaws, the distance between the two jaws and the plunger is the same. Therefore, as long as the two clamping jaws clamp the opposite sides of the pulley, the ejector rod must be positioned on the central axis of the axle, so that the operation and use are more simple and convenient, and the relative can be greatly improved. Pulley removal efficiency.

10‧‧‧guides

11‧‧‧Guided screw holes

12‧‧‧Combined bolts

13‧‧‧Connecting parts

20‧‧‧Two-way screw

21‧‧‧C buckle

22, 23‧‧ ‧ thread segments

24‧‧‧ fixing bolts

25‧‧‧First drive connector

30‧‧‧claw

31‧‧‧ pivot hole

32‧‧‧ screw holes

33‧‧‧Clamping Department

40‧‧‧Pole

41‧‧‧ arrive at the top

42‧‧‧Second drive connector

50‧‧‧ Pulley

51‧‧‧ annular groove

52‧‧‧Axle

The first picture is a three-dimensional diagram of the creation.

Figure 2 is a schematic diagram of the state of use of this creation.

Figure 3 is a schematic diagram of the action of clamping the pulley in this creation.

Fig. 4 is a schematic view showing the action of the pulley to be axially removed from the axle.

Referring to Figures 1 to 4, the pulley removal tool shown in the present application includes a guide rod 10, a bidirectional screw 20, two jaws 30 and a jack. 40, wherein: the guiding rod 10 is in the shape of a round rod, and has a guiding screw hole 11 passing through one of the opposite sides at the center thereof, and the two ends of the guiding rod 10 are respectively combined with two connecting bolts 12 Item 13.

The two-way screw 20 is rotatably disposed on the two connecting members 13 respectively, and two C-shaped buckles 21 are respectively fastened on the opposite inner sides of the two connecting members 13 on the two-way screw 20 to limit The two-way screw 20 can only be axially rotated on the two connecting members 13 and cannot be axially displaced. The two-way screw 20 has two thread segments 22, 23 having opposite spiral directions, one of which is a left-handed thread and the other of which is a right-handed thread. One end of the two-way screw 20 passes through the connecting member 13 , and the first driving joint 25 is fixedly fixed by a fixing bolt 24 . The first driving joint 25 has a hexagonal surface and an end surface. A quadrilateral groove allows a tool to be engaged to rotate it.

The two clamping jaws 30 respectively have a pivot hole 31 for axially slidingly sleeved on the guiding rod 10, and each of the two clamping jaws 30 has a screw hole 32 for each of the two-way screw 20 The thread segments 22, 23 are screwed. The opposite sides of the two jaws 30 respectively have a plurality of clip portions 33 for being engaged in the annular groove 51 of the circumference of a pulley 50.

The ejector 40 has a peripheral surface having an external thread for screwing through the guiding screw hole 11. One end of the ram 40 has an abutting top 41 which is convexly disposed at the center of the end surface of the ram 40 and is formed in a spherical shape to be placed on the end surface of the axle 52. The other end of the jack 40 has a second driving joint 42 of the second driving joint 42 The circumference is hexagonal, and the end face has a quadrangular groove so that another tool can be engaged to rotate it.

In FIG. 3, it is pointed out that when the first driving joint 25 is rotated by a tool (not shown), the first driving joint 25 can be caused to rotate or reverse the two-way screw 20, so that The screwing relationship between the two thread segments 22, 23 of the two-way screw 20 and the screw holes 32 of the two jaws 30 can be utilized to drive the two jaws 30 relatively close to or relatively far apart. When the two-way screw 20 rotates clockwise, the two clamping jaws 30 are relatively close to each other, so that the plurality of clamping portions 33 of the two clamping jaws 30 are simultaneously engaged with the annular concave surface on the opposite side of the circumference of the pulley 50. The purpose of the groove 51; when the two-way screw 20 rotates counterclockwise, the two clamping jaws 30 are interlocked relatively far apart, so that the plurality of clamping portions 33 of the two clamping jaws 30 simultaneously leave the ring on the opposite side of the circumference of the pulley 50 The purpose of the groove 51 is.

In FIG. 4, it is pointed out that when the second driving joint 42 is rotated by another tool (not shown) to interlock the rotation of the jack 40, the thread of the outer surface of the jack 40 can be utilized. The screwing relationship of the guiding screw hole 11 causes the abutting portion 41 of the jack 40 to push the axle 52, thereby forcing the two jaws 30 to clamp the pulley 50 outwardly from the axle 52. In order to achieve the purpose of disassembling the pulley 50 from the axle 52.

Since the present invention, the pulley removing tool can interlock the two clamping jaws 30 relatively close by the screwing of the two threaded segments 22, 23 of the two-way screw 20 and the screw holes 32 of the two clamping jaws 30. Far away, so no matter how the two-way screw 20 is rotated, the distance between the two jaws 30 and the jack 40 will be the same, and As long as the two clamping jaws 30 clamp the opposite sides of the pulley 50, the plunger 40 must be positioned on the central axis of the axle 52. Therefore, the present invention can be rotated once by rotating the two-way screw 20 during operation. The positioning and clamping action is more time-saving, labor-saving, simple and convenient in operation, and the relative efficiency of the pulley can be greatly improved.

10‧‧‧guides

11‧‧‧Guided screw holes

12‧‧‧Combined bolts

13‧‧‧Connecting parts

20‧‧‧Two-way screw

21‧‧‧C buckle

22, 23‧‧ ‧ thread segments

24‧‧‧ fixing bolts

25‧‧‧First drive connector

30‧‧‧claw

31‧‧‧ pivot hole

32‧‧‧ screw holes

33‧‧‧Clamping Department

40‧‧‧Pole

41‧‧‧ arrive at the top

42‧‧‧Second drive connector

50‧‧‧ Pulley

51‧‧‧ annular groove

52‧‧‧Axle

Claims (9)

A pulley removal tool comprising: a guide rod having a connecting member at each end; a bidirectional screw rotatably coupled to the two connecting members, wherein the two-way screw has two threads with opposite spiral directions a second end of the two-way screw passing through the connecting member and having a first driving joint for a tool to engage and rotate; the two clamping jaws are axially movably coupled to the guiding rod, The opposite sides of the two jaws respectively have a plurality of clip portions for engaging in the annular groove of the circumference of a pulley, and the two jaws respectively provide the two thread segments of the two-way screw in a screwed state. Passing through; and a rod passing through the guide rod in a screwed state, one end having an abutting top for the top end of the axle, and the other end having a second driving joint for the other tool to be inserted Then rotate it. The pulley removal tool of claim 1, wherein one of the two thread segments of the two-way screw is a left-handed thread and the other is a right-handed thread, and when the two-way screw rotates clockwise, the two jaws are relatively close to each other. When the two-way screw rotates counterclockwise, the two jaws are interlocked relatively far away. The pulley removing tool according to claim 1, wherein the first driving joint has a hexagonal surface on a circumferential surface thereof and a quadrangular groove on an end surface thereof. The pulley removal tool of claim 1, wherein the two jaws respectively have a pivot hole for slidingly sleeved on the guide rod, and each has a screw hole for the two thread segments of the two-way screw Screw setting. A pulley removal tool according to claim 1, wherein the guide is centrally located There is one of the two opposite sides guiding the screw hole, and the peripheral surface of the ram has an external thread for screwing with the guiding screw hole. The pulley removing tool according to claim 1, wherein the second driving joint has a hexagonal surface on a circumferential surface thereof and a quadrangular groove on an end surface thereof. The pulley removing tool according to claim 1, wherein the abutting top is convexly disposed at a center of one end surface of the jack and formed into a spherical arc shape. The pulley removing tool according to claim 1, wherein the two connecting members are respectively fixed on both end faces of the guiding rod by two coupling bolts, and the two ends of the two-way screw are rotatably passed through the two connecting members respectively. And two C-shaped buckles are respectively respectively fastened to the opposite inner sides of the two connecting members of the two-way screw. The pulley removal tool of claim 1, wherein the first drive joint is fixed to one end of the two-way screw by a fixing bolt.