Special motor pinion shaft puller

Abstract

The utility model discloses a special motor pinion shaft puller, which relates to the field of pullers and comprises a first steel plate, the first steel plate and a second steel plate are mounted and connected through a first screw and a nut, and a third steel plate and a fourth steel plate are mounted between the first steel plate and the second steel plate in a staggered manner. The third steel plate and the fourth steel plate are installed and connected through a second screw and a nut, installation blocks are installed at the lower end of the first steel plate and the lower end of the second steel plate and slide in sliding grooves reserved in the base, and bolts are installed in the fourth steel plate in a threaded mode. The bolts are movably connected with the second steel plate through the limiting assemblies and do not fall off. The bolt moves to drive the steel plate III and the steel plate IV which are connected through the screw II and the nut to move, so that the steel plate III synchronously moves to realize drawing operation on the gear shaft, the gear shaft is pulled out, a special motor gear is pulled out, a motor bearing is convenient to overhaul, the utilization rate of equipment is improved, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of pullers, specifically to a special motor pinion shaft puller. Background Technology

[0002] The gear shaft of an electric motor is a key component used to transmit power and torque. The gear shaft puller is a special tool for disassembling gears, bearings and other parts on the shaft. By selecting the right puller and operating it in a standardized manner, the disassembly efficiency of the motor gear shaft can be effectively improved and the risk of damage to the parts can be reduced.

[0003] Existing pullers still have the following problems when in use: Some special motors have gears, which cannot be removed using traditional bearing pullers. The bearings of the motor cannot be replaced. If the bearings are damaged, the entire motor must be replaced, which increases the cost of use.

[0004] Therefore, it is necessary to invent a special motor pinion shaft puller to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a special motor pinion shaft puller to solve the problem mentioned in the background art that some special motors with gears cannot be removed using traditional bearing pullers, the bearings of the motor cannot be replaced, and the entire motor must be replaced after the bearings are damaged, which leads to increased usage costs.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a special motor pinion shaft puller, comprising a steel plate one, wherein the steel plate one and steel plate two are connected by a screw one and a nut, and steel plate three and steel plate four are alternately installed between steel plate one and steel plate two, and are connected by a screw two and a nut. Mounting blocks are installed at the lower ends of both steel plate one and steel plate two, and the mounting blocks slide within a pre-reserved sliding groove inside the base. Bolts are installed on the internal threads of steel plate four, and the bolts are connected to steel plate two by a limiting component to prevent them from falling off. A motor is fitted inside steel plate one, and a drive shaft is driven by the output shaft of the motor. A gear is fixedly installed at the end of the drive shaft, wherein the drive shaft and the gear together form a gear shaft, which is fitted between steel plates three.

[0007] Preferably, each of the four corners between the first steel plate and the second steel plate has a round hole, and a screw rod is movably installed in each of the four round holes. The second steel plate also has two square holes, and a screw rod is inserted into each of the two square holes.

[0008] Preferably, the steel plate three is composed of two independent rectangular plates, and a semi-circular hole is opened near the midpoint of one long side of the two rectangular plates. A circular body is welded to each of the two rectangular plates near the two short sides. The two circular bodies at the upper end and the two circular bodies at the lower end are respectively connected by a screw three and a nut.

[0009] Preferably, the steel plate four has two square holes inside, and the screw two passes through the square holes.

[0010] Preferably, the limiting component includes a long rod fixedly installed on both end walls of the steel plate, an annular block rotatably installed inside a pre-set annular groove at the front end of the long rod, and a limiting block fixedly installed on the outer wall of the annular block. The long rod and the groove reserved inside the bolt are movably connected. In this way, when the bolt is turned, the bolt rotates and the position of the steel plate changes without affecting the rotation of the bolt. The groove and the long rod are movably connected, so that the bolt will not detach from the long rod, and thus the bolt will not detach from the steel plate, making the bolt more convenient to use.

[0011] Preferably, the channel is composed of a columnar channel and a strip channel connected to the columnar channel. The inner wall of the columnar channel is attached to the outer wall of the long rod to achieve a sliding connection, and the inner wall of the strip channel is attached to the outer wall of the limiting block to achieve a sliding connection. The two ends of the strip channel are closed.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0013] This utility model uses the movement of bolts to drive the movement of steel plates three and four, which are connected by screw two and nuts. This causes steel plate three to move synchronously to pull out the gear shaft. The gear shaft is pulled out, and the special motor gear is pulled out, which facilitates the maintenance of the motor bearing and improves the utilization rate and service life of the equipment. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0015] Figure 1 This is a perspective view of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the base (partially cut out) and the overall connection structure of this utility model;

[0017] Figure 3 This is a perspective view of the four sets of steel plate connection structure of this utility model;

[0018] Figure 4 This is an exploded view of the four-plate connection structure of this utility model;

[0019] Figure 5 This is a top view of the overall structure of the puller of this utility model in its working state;

[0020] Figure 6 This is an exploded view of the internal structure of the bolt of this utility model (partially cut out).

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Steel plate one; 2. Steel plate two; 3. Steel plate three; 4. Steel plate four; 5. Screw one; 6. Screw two; 7. Circumferential body; 8. Screw three; 9. Bolt; 10. Restriction assembly; 101. Long rod; 102. Annular groove; 103. Annular block; 104. Restriction block; 105. Channel; 11. Motor; 12. Drive shaft; 13. Gear; 14. Mounting block; 15. Base; 16. Sliding groove. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0024] This utility model provides, for example Figure 1-6 The special motor pinion shaft puller shown includes a steel plate 1, which is connected to a steel plate 2 via a screw 5 and a nut. Steel plates 3 and 4 are alternately installed between steel plates 1 and 2, and are connected to each other via a screw 6 and a nut. Mounting blocks 14 are installed at the lower ends of both steel plates 1 and 2, and slide within a pre-reserved sliding groove 16 inside a base 15. Bolts 9 are threaded into the internal threads of steel plate 4, and are connected to steel plate 2 via a limiting component 10 to prevent them from falling off. A motor 11 is fitted inside steel plate 1, and a drive shaft 12 is driven by the output shaft of the motor 11. A gear 13 is fixedly installed at the end of the drive shaft 12. The drive shaft 12 and the gear 13 together form a gear shaft, which is fitted between steel plates 3 and 3.

[0025] Circular holes are provided at the four corners between steel plate 1 and steel plate 2. Screw 5 is movably installed in the four sets of circular holes. Steel plate 2 has two square holes, and screw 6 is inserted into the two square holes to ensure the connection between steel plate 1 and steel plate 2. At the same time, the end of screw 5 is connected to the bracket at the side extension of base 15 to ensure the stable use of screw 5.

[0026] Steel plate 3 consists of two independent rectangular plates, with a semi-circular hole at the midpoint of one long side of each plate. This allows the two semi-circular holes to enclose one side of the gear shaft (see reference). Figure 5 Furthermore, two rectangular plates are each welded with a circumferential body 7 near their two short ends. The two circumferential bodies 7 at the top and the two circumferential bodies 7 at the bottom are connected by screws 8 and nuts, respectively, which facilitates the adjustment of the gap between the two rectangular plates and is suitable for the processing of gear shafts of different sizes.

[0027] The steel plate 4 has two square holes inside, and the screw 6 passes through these square holes.

[0028] In this way, the gap between steel plate 1, steel plate 2, steel plate 3, and steel plate 4 can be adjusted. After adjustment, the position can be limited by the nut, thus ensuring that the puller is suitable for pulling motor gear shafts of different sizes.

[0029] The limiting component 10 includes a long rod 101 fixedly installed on the end wall of the steel plate 2, and an annular block 103 rotatably installed inside the annular groove 102 pre-set at the front end of the long rod 101. A limiting block 104 fixedly installed on the outer wall of the annular block 103 and a groove 105 reserved inside the long rod 101 and the bolt 9 are movably connected. The groove 105 is composed of a columnar groove and a strip groove connected to the columnar groove. The inner wall of the columnar groove is attached to the outer wall of the long rod 101 to achieve a sliding connection. The inner wall of the strip groove is attached to the outer wall of the limiting block 104 to achieve a sliding connection. The two ends of the strip groove are closed.

[0030] By turning the bolt 9 in this way, without affecting the rotation of the bolt 9, the groove 105 is movably connected to the long rod 101, so that the bolt 9 will not detach from the long rod 101, and thus the bolt 9 will not detach from the steel plate 4, ensuring that the bolt 9 is more convenient to use. Pushing the bolt 9 to move it will drive the steel plate 3 and steel plate 4 connected by the screw 2 6 and the nut to move, so that the steel plate 3 moves synchronously to pull out the gear shaft.

[0031] The above description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A special motor pinion shaft puller comprising a steel plate (1) characterized in that, The steel plate 1 (1) and steel plate 2 (2) are connected by screw 1 (5) and nut. Steel plate 3 (3) and steel plate 4 (4) are installed alternately between steel plate 1 (1) and steel plate 2 (2). Steel plate 3 (3) and steel plate 4 (4) are connected by screw 2 (6) and nut. The lower ends of steel plate 1 (1) and steel plate 2 (2) are each equipped with a mounting block (14). The mounting block (14) is located inside the sliding groove (16) reserved inside the base (15). The internal threads of the fourth steel plate (4) are fitted with bolts (9), and the bolts (9) are connected to the second steel plate (2) by the limiting component (10) to prevent them from falling off. The first steel plate (1) is fitted with a motor (11), and the output shaft of the motor (11) is driven by a drive shaft (12). The end of the drive shaft (12) is fixedly fitted with a gear (13), wherein the drive shaft (12) and the gear (13) together form a gear shaft, which is fitted between the third steel plate (3).

2. The special motor pinion shaft puller according to claim 1, characterized in that, The four corners between the first steel plate (1) and the second steel plate (2) are provided with round holes, and the first screw (5) is movably installed in the four sets of round holes. The second steel plate (2) is provided with two square holes, and the second screw (6) is inserted into the two square holes.

3. A special motor pinion shaft puller according to claim 1, characterized in that, The steel plate three (3) is composed of two independent rectangular plates, and a semi-circular hole is opened near the middle point of one long side of the two rectangular plates. A circular body (7) is welded to each of the two rectangular plates near the two short sides. The two circular bodies (7) at the upper end and the two circular bodies (7) at the lower end are connected by screw three (8) and nuts respectively.

4. A special motor pinion shaft puller according to claim 2, characterized in that, The steel plate four (4) has two square holes inside, and the screw two (6) passes through the square holes.

5. A special motor pinion shaft puller according to claim 2, characterized in that, The limiting component (10) includes a long rod (101) fixedly installed on the end wall of the steel plate (2), and an annular block (103) is rotatably installed inside the annular groove (102) preset at the front end of the long rod (101), and a limiting block (104) fixedly installed on the outer wall of the annular block (103), and the long rod (101) and the groove (105) reserved inside the bolt (9) are in a movable connection.

6. A special motor pinion shaft puller according to claim 5, characterized in that, The channel (105) is composed of a columnar channel and a strip channel connected to the columnar channel. The inner wall of the columnar channel is attached to the outer wall of the long rod (101) and is slidably connected. The inner wall of the strip channel is attached to the outer wall of the limiting block (104) and is slidably connected. The two ends of the strip channel are closed.

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