A shaft lock

Abstract

The present invention discloses a shaft lock, comprising a base, a through hole for the output shaft to pass through, and an adjusting plate movably arranged on the base through an adjusting structure, wherein the first end of the adjusting plate moves on the base to make the output shaft contact the inner wall of the through hole, so as to limit the rotation of the output shaft. The present invention has a simple structure, and since the output shafts of existing motors are mostly hexagonal, the through hole is also set to be hexagonal, and the through hole is passed through the output shaft of the motor, the motor output shaft can be locked, thereby stopping the movement of the transmission belt; the present invention adopts a bolt to enable the first end of the adjusting plate to move toward the through hole side, so as to adjust the size of the through hole, so as to be suitable for motor output shafts of various sizes.

Description

Technical Field

[0001] The present invention relates to the field of shaft locking structures, and in particular to a shaft lock. Background Art

[0002] With the development of society, conveyor belts used for conveying materials, sorting express delivery, etc. are widely used. When sorting materials, express delivery and other items, it is often necessary to stop the rotation of the transmission belt. Existing transmission belts often use motors for power output. Therefore, it is very important to obtain a shaft lock that can stop the rotation of the transmission belt, that is, the motor output shaft can stop transmission. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a shaft lock, including a base, a through hole for the output shaft to pass through, and an adjusting plate movably arranged on the base through an adjusting structure. The first end of the adjusting plate moves on the base so that the output shaft contacts the inner wall of the through hole to limit the rotation of the output shaft.

[0004] The adjustment structure includes a first through hole formed on the adjustment plate, a second through hole formed on the base and connected to the first through hole, and an adjustment block axially movable between the first through hole and the second through hole. A first inclined surface is formed on the inner wall of the first through hole, and the adjustment block is located at the first inclined surface and has a second inclined surface that cooperates with the first inclined surface.

[0005] The distance between the first through hole and the first end of the adjusting plate is longer than the distance between the second through holes.

[0006] A third slope is provided on the adjustment block located on the side of the second slope, and a fourth slope matching the third slope is provided on the inner wall of the second through hole. The second slope and the third slope have different inclination directions.

[0007] The adjusting block abuts between the first inclined surface and the fourth inclined surface.

[0008] The first through hole, the second through hole and the adjusting block are all in a truncated cone or a conical shape.

[0009] The adjusting structure also includes a bolt, and the bolt is threadedly connected to the adjusting block.

[0010] The adjusting plate is arranged on the first side of the perforation, and a fixing plate is welded on the base at the second side of the perforation. A nut is screwed on the bolt at the bottom of the base. An anti-loosening gasket is arranged outside the nut.

[0011] The three sides of the fixing plate in contact with the base are fixedly connected to the base by argon arc welding to ensure firmness. The fixing plate adopts 65Mn steel that has been heat-treated, which can ensure its hardness and toughness and increase the life of the present invention. The bolts, nuts and washers are all heat-treated to ensure sufficient tensile strength and strength, and increase the life of the present invention.

[0012] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, and since the output shafts of existing motors are mostly hexagonal, the through holes are also set to be hexagonal, and the through holes are passed through the output shaft of the motor, which can lock the motor output shaft and thus stop the movement of the transmission belt; the present invention uses bolts to enable the first end of the adjusting plate to move toward the side of the through hole, so as to adjust the size of the through hole to adapt to motor output shafts of various sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The cross-sectional view of the present invention Figure 1 ;

[0014] Figure 2 The cross-sectional view of the present invention Figure 2 ;

[0015] Figure 3 The cross-sectional view of the present invention Figure 3 ;

[0016] Figure 4 A top view of the present invention;

[0017] Figure 5 It is a cross-sectional perspective view of the present invention.

[0018] Figure markings: 1-base; 2-raised edge of base; 3-perforation; 4-adjusting plate; 501-first inclined plane; 502-second inclined plane; 503-third inclined plane; 504-fourth inclined plane; 6-first perforation; 7-second perforation; 8-adjusting block; 9-fixing plate; 10-nut; 11-anti-loosening gasket; 12-welding point; 13-motor output shaft; 14-fixing plate; 15-bolt; 16-first end; 17-second end. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the present invention, and thus to more clearly define the scope of the protection claimed in the present invention, the present invention is described in detail with respect to certain specific embodiments of the present invention. It should be noted that the following are only certain specific implementations of the present invention, which are only some embodiments of the present invention, wherein the specific and direct description of the relevant structures is only for the convenience of understanding the present invention, and each specific feature does not naturally and directly limit the scope of implementation of the present invention.

[0020] Referring to the accompanying drawings, the present invention adopts the following technical solution: a shaft lock, including a base, a through hole for the output shaft to pass through, and an adjusting plate movably arranged on the base through an adjusting structure. The first end of the adjusting plate moves on the base to make the output shaft contact with the inner wall of the through hole to limit the rotation of the output shaft.

[0021] The shape of the through hole 3 can be adjusted according to the cross-sectional shape of the motor output shaft 13, and the shape of the through hole 3 can adapt to the shape of the motor output shaft 13. The adjusting piece can also be: a plurality of linearly distributed screw holes are opened on the base, and the adjusting piece is fixed to the screw holes at different distances by bolts to adjust the size of the through hole.

[0022] The adjustment structure includes a first through-hole provided on the adjustment plate, a second through-hole provided on the base and connected to the first through-hole, and an adjustment block axially movable between the first through-hole and the second through-hole. A first inclined surface is provided on the inner wall of the first through-hole, and the adjustment block is provided with a second inclined surface matched with the first inclined surface at the first inclined surface. A third inclined surface is provided on the adjustment block located on the side of the second inclined surface, and a fourth inclined surface matched with the third inclined surface is provided on the inner wall of the second through-hole. The second inclined surface and the third inclined surface have different inclination directions. The adjustment block abuts between the first inclined surface and the fourth inclined surface. Figure 1 shown.

[0023] The distance between the first through hole and the first end of the adjusting plate is longer than the distance between the second through holes.

[0024] The adjustment structure also includes a bolt, which is threadedly connected to the adjustment block. Alternatively, the adjustment structure can be a threaded opening on the outer wall of the adjustment block, the first through hole and the inner wall of the second through hole, and the adjustment block is rotatably connected between the first inclined surface and the fourth inclined surface through the threaded connection. Figure 3 shown.

[0025] As a preferred embodiment, the first through hole, the second through hole and the adjusting block are all truncated cone or conical. Figure 2 shown.

[0026] It is worth mentioning that the adjustment structure can also be a cylinder fixed on the base, the output end of the cylinder is fixedly connected to the second end of the adjustment plate, and the movement of the adjustment plate is controlled by the operation of the cylinder, thereby controlling the rotation and locking of the output shaft.

[0027] The three sides of the fixing plate in contact with the base 1 are fixedly connected to the base 1 by argon arc welding. Figure 1As shown, the fixing plate and the raised edge 2 of the base are welded by welding points 12 to ensure firmness. The fixing plate 9 is made of heat-treated 65Mn steel, which can ensure its hardness and toughness and increase the life of the present invention. The bolts 15, nuts 10 and anti-loosening washers 11 are all heat-treated to ensure sufficient tensile strength and strength and increase the life of the present invention.

[0028] Compared with the prior art, the advantages of the present invention are: the present invention has a simple structure, and since the output shafts of existing motors are mostly hexagonal, the through holes are also set to be hexagonal, and the through holes are passed through the output shaft of the motor, which can lock the motor output shaft and thus stop the movement of the transmission belt; the present invention uses bolts to enable the first end of the adjusting plate to move toward the side of the through hole, so as to adjust the size of the through hole to adapt to motor output shafts of various sizes.

[0029] When the present invention is put into use, the base 1 of the present invention can be fixedly mounted on the fixing plate 14 by means of the bolts 13 and the nuts 8. When the transmission belt needs to stop working, the fixing plate 14 is moved, and the through hole 3 of the base 1 on the fixing plate 14 is inserted into the motor output shaft of the transmission belt, such as Figure 2 As shown, the motor output shaft 13 passes through the through hole 3, and the fixing plate 14 is fixed, so that the motor output shaft 13 cannot rotate in the through hole 3, thereby stopping the conveyor belt.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A shaft lock, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a through hole (3) for the output shaft to pass through, and further comprises an adjusting plate (4) movably arranged on the base (1) through an adjusting structure, wherein the first end of the adjusting plate (4) moves on the base (1) so that the output shaft contacts the inner wall of the through hole (3) to limit the rotation of the output shaft; The adjustment structure comprises a first through hole (6) formed on the adjustment plate (4), a second through hole (7) formed on the base (1) and connected to the first through hole (6), and an adjustment block (8) axially movable between the first through hole (6) and the second through hole (7), wherein a first inclined surface (501) is formed on the inner wall of the first through hole (6), and the adjustment block (8) is provided with a second inclined surface (502) cooperating with the first inclined surface (501) at the first inclined surface (501); The distance between the first through hole (6) and the first end of the adjustment plate (4) is longer than the distance between the second through hole (7) and the through hole (3); A third inclined surface (503) is provided on the adjustment block (8) located on the opposite side of the second inclined surface (502), and a fourth inclined surface (504) matching with the third inclined surface (503) is provided on the inner wall of the second through hole (7), and the second inclined surface (502) and the third inclined surface (503) have different inclination directions; The adjustment structure is a thread formed on the outer wall of the adjustment block (8), the first through hole (6) and the inner wall of the second through hole (7); the adjustment block is rotatably connected between the first inclined surface (501) and the fourth inclined surface (504) via the thread.

2. The shaft lock according to claim 1, characterized in that: The adjustment block (8) abuts between the first inclined surface (501) and the fourth inclined surface (504).

3. The shaft lock according to claim 1 or 2, characterized in that: The first through hole (6), the second through hole (7) and the adjustment block (8) are all truncated cone-shaped or conical-shaped.

4. The shaft lock according to claim 1, characterized in that: The adjusting plate (4) is arranged on a first side of the through hole (3), and a fixing plate (9) is welded on the base (1) located on a second side of the through hole (3).

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