Puller for disassembling coupler of vertically-mounted speed reducer

Abstract

The puller comprises a puller plate, a puller screw rod, a positioning screw rod and a baffle, and a threaded hole is formed in the center of the puller plate and used for installing the puller screw rod; the puller screw penetrates through the puller plate to act on a shaft connected with the coupler. A plurality of positioning holes are formed in the puller plate and used for installing positioning screws, one ends of the positioning screws are connected with the puller plate, and the other ends of the positioning screws are connected with the coupler; and a baffle plate is mounted at the bottom end of the puller screw rod. According to the puller for disassembling the coupler of the vertically-installed speed reducer, the puller screw rod is installed in the center of the puller plate, the positioning screw rods are symmetrically arranged around the center of the puller plate and used for connecting the puller plate and the coupler, and the puller can be suitable for couplings with different thicknesses by adjusting the distance, located between the coupler and the puller plate, of the puller screw rod.

Description

TECHNICAL FIELD

[0001] The utility model relates to a vertical installation speed reducer coupling dismounting puller. BACKGROUND

[0002] The puller, also known as a puller, is widely used in dismounting various couplings, gears, bearings, belt pulleys and other shaft fastening parts. According to its pushing mode, it is usually divided into a jack type puller and a screw rod type puller. The existing screw rod type puller comprises a pushing seat, a pushing screw rod and a hook claw, the pushing seat is provided with a threaded hole in the center for installing the pushing screw rod, and the hook claw is hinged to the pushing seat. The hook claw is usually a two-claw hook claw or a three-claw hook claw, which has poor versatility. Moreover, the contact position of the hook claw with the pushing seat is fixed and cannot be adjusted according to actual needs. The hook claw usually clamps the outer edge of the part to be dismounted. Since the hook claw cannot be adjusted according to the actual situation, the supporting effect of the hook claw on the part to be dismounted is limited, and there is a great safety hazard. SUMMARY

[0003] In view of the above defects of the prior art, the utility model provides a vertical installation speed reducer coupling dismounting puller, which connects the coupling and the puller plate through the positioning screw rod, avoiding the problem of falling of the coupling from the puller plate during dismounting.

[0004] In order to solve the above technical problems, the utility model provides a vertical installation speed reducer coupling dismounting puller, which comprises a puller plate, a puller screw rod, a positioning screw rod and a baffle. The puller plate is provided with a threaded hole in the center for installing the puller screw rod. The puller screw rod passes through the puller plate and acts on the shaft connected with the coupling. The puller plate is provided with a plurality of positioning grooves for installing the positioning screw rod. One end of the positioning screw rod is connected with the puller plate, and the other end is connected with the coupling. The bottom end of the puller screw rod is provided with a baffle.

[0005] By providing the positioning grooves on the puller plate and installing the positioning screw rod in the positioning grooves, the puller plate and the coupling are connected respectively, so that the coupling and the puller plate are in a relatively fixed state, avoiding the problem of falling of the coupling from the puller plate during dismounting.

[0006] In addition, since the puller plate and the coupling are connected through the positioning screw rod, the length of the puller screw rod between the puller plate and the coupling can be adjusted. When the thickness of the coupling is large, the length of the puller screw rod between the puller plate and the coupling can be reduced to maximize the length of the puller screw rod and achieve effective ejection. When the thickness of the coupling is small, the length of the puller screw rod between the puller plate and the coupling can be appropriately increased.

[0007] In summary, by adjusting the length of the puller screw rod between the coupling and the puller plate, the puller can be applied to couplings of different thicknesses

[0008] As a preferred embodiment, the length of the positioning slot is 120mm.

[0009] The positioning slot is set to a certain length, so that the puller of the application can be applied to different sizes of shaft couplings. When the size of the shaft coupling is small, the positioning screw is arranged close to the inner side of the positioning slot; when the size of the shaft coupling is large, the positioning screw is arranged at the outer side of the positioning slot.

[0010] As a preferred embodiment, the puller plate is circular, and a plurality of positioning slots are uniformly arranged on the puller plate.

[0011] As a preferred embodiment, the positioning slot is provided with 6.

[0012] As a preferred embodiment, a plurality of lifting rings are uniformly arranged at positions away from the center of the puller plate, one end of the lifting ring is connected to the puller plate, and the other end is connected to an upper fixing point.

[0013] When the shaft coupling and the shaft are about to be separated, the lower worker needs to lift for a long time, especially at the moment when the shaft coupling and the shaft are separated, the puller will fall together with the shaft coupling, and the lifting personnel is easy to be injured by the instantaneously falling puller and shaft coupling. By arranging the lifting ring on the puller plate, the lifting ring is connected to the upper structure, so that the puller plate and the shaft coupling are in a relatively stable state, and when the puller screw is rotated, no one is needed to lift the shaft coupling; in addition, the risk of injury when the shaft coupling is taken out is also reduced.

[0014] As a preferred embodiment, the lifting ring is provided with 3.

[0015] As a preferred embodiment, the top end of the puller screw is conical, and the bottom end is hexagonal.

[0016] The top end of the puller screw is conical and contacts the center point of the vertically mounted speed reducer shaft; the bottom end (at the tail) is hexagonal to prevent slipping when using a wrench.

[0017] As a preferred embodiment, the material of the puller plate is alloy steel or chromium vanadium steel.

[0018] As a preferred embodiment, the diameter of the top end of the puller screw is smaller than the outer diameter of the shaft.

[0019] As a preferred embodiment, the positioning screw is uniformly distributed in the circumferential direction.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] (1) The utility model discloses a puller for vertical mounting speed reducer coupling dismounting, puller screw rod is installed in the center of puller plate, and a plurality of positioning screw rods are symmetrically arranged around the center of puller plate, which are used for connecting the puller plate and the coupling, and the length of the puller screw rod between the coupling and the puller plate can be adjusted to be suitable for couplings of different thicknesses.

[0022] (2) The utility model discloses a puller for vertical mounting speed reducer coupling dismounting, a baffle is arranged at the bottom end of the puller screw rod to prevent the puller screw rod from falling and hurting people when being rotated by a wrench.

[0023] (3) The utility model discloses a puller for vertical mounting speed reducer coupling dismounting, the puller screw rod, the positioning screw rod and the positioning groove are used in cooperation to realize the dismounting of couplings of different thicknesses and different sizes, expand the use range of the puller and improve the safety in use.

[0024] The utility model will be further described below with reference to the drawings to fully understand the purpose, characteristics and effects of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is the structure schematic diagram of the puller for vertical mounting speed reducer coupling dismounting of the utility model;

[0026] Figure 2 It is the structure schematic diagram of the puller plate in the puller for vertical mounting speed reducer coupling dismounting of the utility model;

[0027] Figure 3 It is the structure schematic diagram of the puller screw rod in the puller for vertical mounting speed reducer coupling dismounting of the utility model;

[0028] Figure 4 It is the structure schematic diagram of the positioning screw rod in the puller for vertical mounting speed reducer coupling dismounting of the utility model;

[0029] Figure 5 It is the use state schematic diagram of the puller for vertical mounting speed reducer coupling dismounting of the utility model.

[0030] Among them: 1-puller screw rod, 2-puller plate, 3-positioning screw rod, 4-coupling, 5-shaft, 6-baffle, 7-lifting ring, 8-positioning groove. DETAILED DESCRIPTION

[0031] In order to make the technical means, the creation characteristics, the purpose and the effect of the utility model easy to understand, the utility model will be further described below with reference to the drawings. But the utility model is not limited to the following implementation cases.

[0032] It is to be understood that the structures, proportions, sizes, etc. shown in the drawings attached to the present specification are merely used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and are not used to limit the implementation conditions of the utility model, and therefore do not have the substantial technical significance, and any modification of structure, change of proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0033] Puller for disassembling various mechanical equipment in the pulley, gear, bearing and other circular workpiece. Puller is divided into jack type puller and screw rod type puller. The existing screw rod type puller is mostly two jaw type puller or three jaw type puller. Because the two jaw or three jaw type puller, the installation position of the hook claw relative to the pusher is fixed, and cannot be adjusted according to the actual needs, the use range is limited. When the size (outer diameter) of the coupling to be disassembled is too large or too small, the existing screw rod type puller cannot be used normally.

[0034] Vertical installation speed reducer, also known as vertical installation speed reducer, is a general term for speed reducer installed away from the ground. Its characteristics are that the output shaft of the speed reducer is placed vertically to the ground. This installation method is suitable for occasions with limited space and vertical transmission, such as some special production lines or mechanical equipment. Vertical speed reducer can effectively utilize vertical space and reduce horizontal floor area, and has high transmission efficiency because the transmission path is shorter and the energy loss is relatively less in vertical layout.

[0035] The utility model provides a kind of puller for disassembling vertical installation speed reducer coupling, such as Figure 1 , including puller plate 2, puller screw rod 1, positioning screw rod 3 and baffle 6, puller plate 2 center is provided with threaded hole, for installing puller screw rod 1;Puller screw rod 1 passes through puller plate 2 and acts on the shaft 5 connected with coupling 4;Puller plate 2 is provided with a plurality of positioning grooves 8, for installing positioning screw rod 3, one end of positioning screw rod 3 is connected with puller plate 2, the other end is connected with coupling 4;The bottom end of puller screw rod 1 is provided with baffle 6.

[0036] Puller screw rod 1, such as Figure 3, with a total length of 543mm, a conical top, and contact with the center point of the shaft of the vertically mounted reducer (when in use, the center point is the force point). The diameter of the top of the puller screw 1 is smaller than the outer diameter of the shaft 5, and the pitch of the middle thread is 2.5×440mm. It is installed vertically on the puller plate 2 through the center hole of the puller plate 2. The middle thread is 440mm long, and the installation distance can be adjusted according to different installation positions. If the thickness of the coupling 4 is relatively small, the length of the puller screw 1 between the puller plate 2 and the coupling 4 can be adjusted to a larger length to achieve complete jacking; however, if the thickness of the coupling 4 is relatively large, the length of the puller screw 1 between the puller plate 2 and the coupling 4 should be reduced. Otherwise, due to the small movable distance of the puller screw 1, it is impossible to achieve complete jacking of the shaft 5. It can be seen that by adjusting the movable distance of the puller screw 1, couplings of different thicknesses can be disassembled and used.

[0037] The puller screw 1 has an external hexagonal shape for 50mm from the tail. This shape near the tail prevents slipping when using a wrench. After the entire assembly is complete, use a thorn wrench to rotate it to remove the coupling 4. Drill an M8 x 30mm thread in the center of the tail end of the puller screw 1 for mounting the baffle 6.

[0038] Puller plate 2, such as Figure 2 , made of alloy steel or chrome vanadium steel, The center hole, M38 with a 2.5mm pitch, is used to mount the puller screw 1. The puller plate 2 is divided into six equal sections, each with an elliptical spline groove, or positioning groove 8, for mounting the positioning screw 3. The positioning groove 8 is 120mm long. The positioning groove 8 is identical in size and shape, and the positioning screw 3 can be installed in different positions within the positioning groove 8 depending on the coupling 4. If the coupling 4 is smaller, the positioning screw 3 is installed near the center of the puller plate 2; if the coupling 4 is larger, the positioning screw 3 is installed away from the center of the puller plate 2.

[0039] For two-jaw or three-jaw pullers, the contact position between the puller and the coupling 4 is fixed. If the size of the coupling 4 changes significantly, it will not work properly. The present invention cleverly designs the positioning groove 8, which allows the installation position of the positioning screw 3 to be flexibly adjusted, thereby expanding the application range of the puller of the present invention.

[0040] Positioning screw 3, such as Figure 4 , 300mm long, the positioning screw 3 passes through the oval spline groove and is connected to the coupling 4. According to the different thicknesses of the coupling 4, it can be adjusted to the optimal position as needed and then fixed with a nut, maximizing the length of the puller screw 1 to achieve effective ejection, so as to facilitate the disassembly of couplings 4 of different thicknesses and expand the scope of use.

[0041] Through the cooperation of the puller screw 1, the positioning screw 3 and the positioning groove 8, the different thicknesses and sizes of the shaft coupling 4 can be effectively and safely ejected.

[0042] The baffle 6, The intermediate The hole is used for connecting with the puller screw 1. The baffle 6 is fixedly installed on the puller screw 1 through the outer hexagonal screw. When the puller screw 1 is rotated by using the thorn wrench, there is uninterrupted force, and the wrench is easy to vertically drop in loosening, which causes the injury of the personnel below. Through the setting of the baffle 6, the problem that the wrench is accidentally dropped and the personnel is injured is effectively avoided. Moreover, through the setting of the baffle 6, the problem of the placement of the wrench in the use process is also solved.

[0043] The puller plate 2 is uniformly provided with a plurality of lifting rings 7 away from the position of the center of the circle. The lifting ring 7 is usually three, and can also be more. One end of the lifting ring 7 is connected with the puller plate 2, and the other end is connected to the upper fixed point.

[0044] When the shaft coupling 4 is about to be separated from the shaft 5, the personnel below needs to lift for a long time, especially at the moment when the shaft coupling 4 is separated from the shaft 5, the puller will fall together with the shaft coupling 4, and the lifting personnel is easy to be injured by the instantaneously falling puller and shaft coupling 4. Through the symmetrical installation of three lifting rings 7 on the puller plate 2, the lifting rings 7 are uniformly connected to the upper fixed point by using the rope, so that the shaft coupling 4 is prevented from falling together with the puller when being taken out and injuring people. At the same time, when the puller screw 1 is rotated, the personnel does not need to lift the shaft coupling 4, which not only reduces the disassembling personnel, but also eliminates the safety hidden danger.

[0045] The use method of the puller for disassembling the shaft coupling of the vertically installed speed reducer is as follows, such as Figure 5 :

[0046] 1) The three lifting rings 7 are connected by using the rope, the puller plate 2 is lifted, and the rope is fixed to the upper fixed point.

[0047] 2) The puller screw 1 is vertically arranged through the center threaded hole of the puller plate 2, and the puller screw 1 takes the shaft center of the vertically installed speed reducer as the fulcrum.

[0048] 3) The positioning screw 3 is arranged through the positioning groove 8, the six positioning screws 3 are distributed around the speed reducer shaft coupling, and are fixed on the puller plate 2 and the shaft coupling 4 by using the nuts, so that the puller is uniformly stressed on the shaft coupling 4.

[0049] 4) The puller screw 1 is rotated by using the thorn wrench, is stressed on the shaft 5, the shaft 5 is moved upward, the shaft 5 is gradually separated from the shaft coupling 4, and the shaft coupling 4 is completely taken off.

[0050] The utility model discloses a puller for the dismounting of vertical mounting speed reducer coupling, through the cooperation of puller screw rod 1 and positioning screw rod 3 and positioning groove 8, the dismounting use of different thickness and different size couplings can be realized, the use range of the puller is expanded, and the safety of use is improved.

[0051] The preferred embodiments of the utility model are described in detail above. It should be understood that ordinary technical personnel in the art can make many modifications and changes according to the concept of the utility model without creative labor. Therefore, any technical scheme obtained by logical analysis, reasoning or limited experiment on the basis of the prior art according to the concept of the utility model should be within the protection scope defined by the claims.

Claims

1. A puller for dismounting a vertical speed reducer coupling, comprising a puller plate, a puller screw, a positioning screw and a baffle, characterized in that, a threaded hole is arranged in the center of the puller plate for mounting the puller screw; the puller screw passes through the puller plate to act on a shaft connected with the coupling; a plurality of positioning slots are arranged on the puller plate for mounting the positioning screw, one end of the positioning screw being connected with the puller plate and the other end being connected with the coupling; a baffle is mounted at the bottom end of the puller screw.

2. The vertical mounted speed reducer coupling puller of claim 1, wherein, The length of the positioning slot is 120 mm.

3. The vertical mounted speed reducer coupling puller of claim 1, wherein, The puller plate is circular, and the plurality of positioning slots are uniformly arranged on the puller plate.

4. The vertical mounted speed reducer coupling puller of claim 3, wherein, The positioning slots are arranged in six.

5. The vertical mounted speed reducer coupling puller of claim 1, wherein, A plurality of lifting rings are uniformly arranged at positions away from the center of the puller plate, one end of the lifting ring being connected with the puller plate and the other end being connected with an upper fixed point.

6. The vertical mounted speed reducer coupling puller of claim 5, wherein, The lifting rings are arranged in three.

7. The vertical mounted speed reducer coupling puller of claim 1, wherein, The top end of the puller screw is conical, and the bottom end is hexagonal.

8. The vertical mounted speed reducer coupling puller of claim 1, wherein, The material of the puller plate is alloy steel or chromium vanadium steel.

9. The vertical mounted speed reducer coupling puller of claim 1, wherein, The diameter of the top end of the puller screw is smaller than the outer diameter of the shaft.

10. The vertical mounted speed reducer coupling puller of claim 1, wherein, The positioning screws are uniformly distributed in the circumferential direction.

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