Motor blind hole puller

Abstract

The utility model discloses a motor blind hole puller which comprises a pulling disc, an ejector rod and a lead screw, the ejector rod and the lead screw connected with the ejector rod in a threaded mode are installed on the pulling disc, an adjusting groove is formed in the pulling disc, a hook is installed in the adjusting groove through a shaft pin, a hook groove is formed in the outward side of the tail end of the hook, and a diagonal plane is arranged on the inward side of the tail end of the hook. A cone which pushes the hook to expand outwards through a diagonal plane is installed at the bottom of the lead screw, a thread is arranged on the outer side of the ejector rod, a nut is installed on the outer side of the thread, and the ejector rod is fixed to any position in the adjusting groove through clamping of the nut. According to the motor blind hole puller, the hook penetrates into a motor stator, the screw rod drives the cone to expand the hook outwards, the hook is expanded to be attached to the inner wall of the stator, the hook groove is clamped in the stator, at the moment, the stator can be taken out of a machine shell by pulling the hook, and the purpose of disassembling a blind hole mechanical structure of the puller is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a motor maintenance equipment technical field, specifically a blind hole puller equipment for motor maintenance. BACKGROUND

[0002] The electric puller is suitable for supporting of railway vehicle maintenance, mechanical installation, mine maintenance and building engineering and lifting and lowering of general heavy objects, and can also detach round workpieces such as pulley, gear and bearing in various mechanical equipment.

[0003] The puller is usually clamped by three-jaw or two-jaw type, and the hydraulic pressure is used to move the ejector rod to the detached part, the puller can be freely rotated according to the distance from the piston center point, and the center point of the pulled workpiece can be quickly contacted for operation, but it is usually suitable for perforated structure, and for blind hole, the detached part needs to be pulled out, for example, the motor stator is detached, therefore, the puller of the prior art is technically improved to be suitable for blind hole mechanical part detachment. SUMMARY

[0004] The utility model discloses a motor blind hole puller to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The motor blind hole puller comprises a puller plate, an ejector rod and a lead screw, the puller plate is provided with the ejector rod and the lead screw connected through threads, an adjusting groove is formed in the puller plate, a hook is installed in the adjusting groove through a shaft pin, a hook groove is formed on the outer side of the end of the hook, an inclined surface is formed on the inner side of the end of the hook, and a cone is installed at the bottom of the lead screw to push the hook outward and tighten the hook.

[0007] As a further scheme of the utility model, a thread is formed on the outer side of the ejector rod, a nut is installed on the outer side of the thread, and the ejector rod is fixed at any position in the adjusting groove through clamping of the nut.

[0008] As a further scheme of the utility model, a handle is formed at the top of the lead screw, and the lead screw and the handle form a T shape.

[0009] As a further scheme of the utility model, the top of the lead screw penetrates the handle and is connected to a connecting seat through a plane bearing.

[0010] As a further scheme of the utility model, a binding groove is formed on the outer side of the hook, and a ring spring is installed in the binding groove to tighten the hook inward.

[0011] As a further scheme of the utility model, the number of the ejector rods is not less than three, the lead screw is located at the center of the puller plate, and the ejector rods are distributed in a ring shape at equal distances from the center of the lead screw.

[0012] As a further scheme of the utility model: the cone is fixed through bolt and screw rod, the taper angle of the cone is same with the angle of the bevel surface.

[0013] Compared with the prior art, the utility model has the beneficial effects that:

[0014] The motor blind hole puller, through the hook, penetrates into the motor stator, the screw rod drives the cone to expand the hook outward, so that the hook is expanded to adhere to the inner wall of the stator, and the hook groove is clamped in the stator, at this time, the stator can be taken out from the shell by pulling the hook, so that the purpose of disassembling the blind hole mechanical structure of the puller is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a structural schematic view of a motor blind hole puller;

[0016] Fig. 2 It is a structural front view of a motor blind hole puller;

[0017] Fig. 3 It is a structural schematic view of a hook in a motor blind hole puller.

[0018] In the drawing: 1, pull plate; 2, top rod; 3, screw rod; 4, rotating handle; 5, connecting seat; 6, cone; 7, hook; 8, hook groove; 9, nut; 10, adjusting groove; 11, shaft pin; 12, plane bearing; 13, bevel surface. DETAILED DESCRIPTION

[0019] Please refer to Figs. 1-3 In the utility model embodiment, the motor blind hole puller, including pull plate 1, top rod 2 and screw rod 3, top rod 2 and screw rod 3 are installed on pull plate 1, and screw rod 3 is connected in screw thread on pull plate 1, adjusting groove 10 is formed on pull plate 1, hook 7 is installed in adjusting groove 10 through shaft pin 11, the one side outward of the end of hook 7 is provided with hook groove 8, the one side inward is provided with bevel surface 13, the bottom of screw rod 3 is installed with cone 6 that pushes hook 7 outward and tightens through bevel surface 13, cone 6 is fixed through bolt with screw rod 3, the taper angle of cone 6 is same with the angle of bevel surface 13, for some special motor blind hole, the present application is pre-tightened by using top rod 2, the outside of motor is fixed on the base of puller machine or other carrier through bolt, the shell of motor is fixed immovably, the top of screw rod 3 penetrates rotating handle 4, and is installed connecting seat 5 through plane bearing 12, connecting seat 5 is fixed with the hydraulic cylinder of puller machine, the hydraulic cylinder pushes screw rod 3 to move, until top rod 2 is pressed tightly motor shell, rotating handle 4 rotates screw rod 3 and makes cone 6 open hook 7, hook 7 opens hook groove 8 and is clamped on stator, after hook 7 is completely tight, the hydraulic cylinder drives screw rod 3 and pulls out stator, realizes the separation of motor rotor and motor shell.

[0020] In a preferred embodiment, the outer side of the top rod 2 is provided with a thread, a nut 9 is installed outside the thread, the top rod 2 is fixed at any position in the adjusting groove 10 through the clamping of the nut 9, the main function of the top rod 2 is to determine the depth of the hook 7 into the motor, too deep will touch the bottom of the blind hole, causing damage, too shallow cannot make the hook groove 8 be clamped on the stator, so the top rod 2 needs to be adjusted, the top rod 2 can not only adjust the length, but also adjust the position, and adapt to different sizes of motors.

[0021] In a preferred embodiment, the top of the lead screw 3 is provided with a handle 4, the lead screw 3 and the handle 4 form a T shape, for the output end of the puller hydraulic cylinder without rotation driving function, the handle 4 is mainly manually controlled, and for the output end of the puller hydraulic cylinder with rotation driving function, the handle 4 can be detached, and the lead screw 3 can be directly fixed with the output end.

[0022] In a preferred embodiment, the outer side of the hook 7 is provided with a binding groove, and a ring spring is installed in the binding groove to tightly bind the hook 7 inward, the hook 7 is rotatably installed in the adjusting groove 10 through the shaft pin 11, so that the hook 7 is perpendicular to the horizontal plane under the action of gravity, when the puller is working vertically to the horizontal plane, the hook 7 cannot be folded, causing inconvenience in work, so the ring spring is added to tightly bind the hook 7, and the hook 7 is more convenient to insert into the stator.

[0023] In a preferred embodiment, the number of the top rod 2 is not less than three, the lead screw 3 is located at the center of the puller disc 1, and the top rod 2 is distributed in a ring shape at equal distances with the lead screw 3 as the center, the top rod 2 needs to maintain a certain balance when pre-tightening and pressing the motor, so the number of the top rod 2 is at least three, and needs to be distributed with the lead screw 3 as the center.

[0024] It should be noted that the above embodiments all belong to the same utility model concept, the description of each embodiment has its own emphasis, and the description not described in detail in individual embodiments can be referred to the description in other embodiments.

[0025] The above-described embodiments only express the implementation of the utility model, the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A motor blind hole puller, comprising a puller plate (1), a ejector rod (2) and a screw rod (3), the ejector rod (2) and the screw rod (3) are installed on the puller plate (1) and connected by screwing, characterized in that, The adjusting groove (10) is arranged on the pull plate (1), the hook (7) is arranged in the adjusting groove (10) through the shaft pin (11), the hook groove (8) is arranged on the outer side of the end of the hook (7), the oblique surface (13) is arranged on the inner side of the end of the hook (7), the taper (6) is arranged on the bottom of the screw rod (3) and is used for pushing the hook (7) outward to be tight, the outer side of the top rod (2) is provided with the screw thread, the nut (9) is arranged on the outer side of the screw thread, and the top rod (2) is fixed at any position in the adjusting groove (10) through the clamping of the nut (9).

2. The motor blind hole puller of claim 1, wherein, The top of the screw rod (3) is provided with the handle (4), and the screw rod (3) and the handle (4) form a T shape.

3. The motor blind hole puller of claim 2, wherein, The top of the screw rod (3) penetrates the handle (4) and is connected with the connecting base (5) through the plane bearing (12).

4. The motor blind hole puller of claim 1, wherein, The outer side of the hook (7) is provided with the binding groove, and the annular spring is arranged in the binding groove to tightly bind the hook (7) inward.

5. The motor blind hole puller of claim 1, wherein, The number of the top rod (2) is not less than three, the screw rod (3) is located at the center of the pull plate (1), and the top rod (2) is arranged in a ring shape at equal distances with the screw rod (3) as the center.

6. The motor blind hole puller of claim 1, wherein, The taper (6) is fixed with the screw rod (3) through the bolt, and the taper angle of the taper (6) is the same as the angle of the oblique surface (13).

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