Lifting platform push rod motor

Abstract

The utility model provides a lifting platform push rod motor, and solves the problem that the service life of the motor is affected due to the fact that the push rod motor shifts during working. The limiting grooves are evenly distributed in the circumferential direction of the machine shell, the limiting through grooves comprise the first through groove and the second through groove, and the width of the first through groove is smaller than that of the second through groove; the connecting piece is used for connecting the shell and the box body and comprises a first connecting part and a second connecting part, the first connecting part is used for being matched with the limiting groove, the second connecting part is provided with a connecting hole, and the top face of the second connecting part makes contact with the bottom face of the bearing; and the clamp spring is mounted on the worm shaft and positioned at the upper and lower ends of the bearing. The clamping spring is used for preventing the bearing from moving relative to the worm shaft, after the connecting piece is matched with the limiting groove, the first connecting part is matched with the first through groove and the second through groove, the connecting piece is vertically limited, the lower end of the bearing is limited through the second connecting part, the upper end of the bearing is limited through the mounting hole, and then the bolt penetrates through the box body to be connected with the connecting hole to achieve connection between the machine shell and the box body.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a lifting platform push rod motor. Background Art

[0002] The push rod motor of the lifting platform is an electric drive device that converts the rotational motion of the motor into the linear reciprocating motion of the push rod to realize the lifting and lowering of the lifting platform. In the push rod motor, such as the one disclosed in the Chinese patent authorization announcement number CN202111577U, in order to ensure the smooth rotation of the worm shaft, a bearing is set at the bottom of the turbine seat, but the worm shaft has an axial clearance due to the dimensional tolerance. When the worm shaft rotates, it will move, causing the bearing to move back and forth in the installation position, resulting in high noise and affecting the service life of the motor. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a lifting platform push rod motor, which solves the problem that the push rod motor moves when working and affects the service life of the motor.

[0004] The technical solution adopted by the utility model is as follows:

[0005] The lifting platform push rod motor comprises a worm shaft and a casing and a box body that cooperate with each other, a mounting hole is provided at the bottom of the box body, a bearing for cooperating with the worm shaft is installed in the mounting hole, and further comprises:

[0006] At least two limiting grooves are evenly distributed in the circumference of the housing, the limiting grooves include a first through groove and a second through groove arranged up and down, and the width of the first through groove is smaller than the width of the second through groove;

[0007] A connecting piece, used to connect the shell and the box body, the connecting piece includes a No. 1 connecting part and a No. 2 connecting part, the No. 1 connecting part is used to cooperate with the limiting groove, the No. 2 connecting part is provided with a connecting hole, and the top surface of the No. 2 connecting part contacts the bottom surface of the bearing;

[0008] The retaining ring is installed on the worm shaft and is located at the upper and lower ends of the bearing.

[0009] The outer wall of the bottom of the box body is provided with a positioning groove for cooperating with the second connecting part.

[0010] The limiting groove also includes a No. 3 through groove arranged above the No. 1 through groove, and the limiting groove is in an I-shape.

[0011] A lead plug is installed on the box body.

[0012] The bottom of the casing is provided with a No. 1 top block for cooperating with the bottom of the worm shaft, and the top of the box body is provided with a No. 2 top block for cooperating with the top of the worm shaft. The No. 2 top block is threadedly connected to the box body.

[0013] The box body comprises a box shell and a box cover, and a rubber gasket is arranged between the box shell and the box cover.

[0014] The box body is provided with a chip and a signal sensor installed on the worm shaft.

[0015] The beneficial effects of the utility model are:

[0016] The retaining ring is used to prevent the bearing from moving relative to the worm shaft. After the connecting piece cooperates with the limit groove, the No. 1 connecting part cooperates with the No. 1 through groove and the No. 2 through groove to limit the connecting piece up and down. The lower end of the bearing is limited by the No. 2 connecting part, and the upper end is limited by the mounting hole. Then the bolt passes through the box body and connects with the connecting hole to connect the casing and the box body. This structure can prevent the worm shaft from moving and ensure the service life of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the utility model.

[0018] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0019] Figure 3 It is a schematic diagram of the casing of the utility model.

[0020] Figure 4 It is a schematic diagram of a box body of the utility model.

[0021] Figure 5 It is a schematic diagram of the connecting piece of the utility model.

[0022] Bearing 1, limiting groove 2, through groove No. 1 21, through groove No. 2 22, through groove No. 3 23, connecting piece 3, connecting part No. 1 31, connecting part No. 2 32, connecting hole 4, retaining ring 5, lead plug 6, top block No. 1 7, top block No. 2 8, box shell 9, box cover 10, rubber gasket 11, chip 12, signal sensor 13, positioning groove 14. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0024] In the embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, the lifting platform push rod motor includes a worm shaft and a casing and a box body that cooperate with each other. The bottom of the box body is provided with a mounting hole, and the mounting hole is installed with a bearing 1 for cooperating with the worm shaft. It also includes:

[0025] At least two limiting grooves 2 are evenly distributed in the circumference of the housing, and the limiting grooves 2 include a first through groove 21 and a second through groove 22 arranged in an up-down manner, and the width of the first through groove 21 is smaller than the width of the second through groove 22;

[0026] A connecting member 3 is used to connect the shell and the box body. The connecting member 3 includes a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 is used to cooperate with the limiting groove 2. The second connecting portion 32 is provided with a connecting hole 4. The top surface of the second connecting portion 32 contacts the bottom surface of the bearing 1.

[0027] The retaining ring 5 is installed on the worm shaft and is located at the upper and lower ends of the bearing 1.

[0028] The retaining spring 5 is used to prevent the bearing 1 from moving relative to the worm shaft. After the connecting piece 3 cooperates with the limiting groove 2, the No. 1 connecting part 31 cooperates with the No. 1 through groove 21 and the No. 2 through groove 22 to limit the connecting piece 3 up and down. The lower end of the bearing 1 is limited by the No. 2 connecting part 32, and the upper end is limited by the mounting hole. Then the bolt passes through the box body and connects with the connecting hole 4 to connect the casing and the box body. This structure can prevent the shaft of the worm from moving and ensure the service life of the motor.

[0029] In the embodiment, Figure 4 As shown, the outer wall of the bottom of the box body is provided with a positioning groove 14 for cooperating with the second connecting portion 32. The second connecting portion 32 is positioned to facilitate the bolt to pass through the box body and connect with the connecting hole 4.

[0030] In the embodiment, Figure 3 As shown, the limiting groove 2 also includes a No. 3 through groove 23 arranged above the No. 1 through groove 21, and the limiting groove 2 is in an I-shape. The connecting member 3 is L-shaped, and the limiting groove 2 is in an I-shape, so that the No. 2 connecting portion 32 has a larger width, which can better support the bearing 1.

[0031] In the embodiment, Figure 1 , Figure 4 As shown, a lead plug 6 is installed on the box body to protect the lead and prevent the lead from being damaged due to bending or abrasion.

[0032] In the embodiment, Figure 2 As shown, the bottom of the housing is provided with a No. 1 top block 7 for cooperating with the bottom of the worm shaft, and the top of the box body is provided with a No. 2 top block 8 for cooperating with the top of the worm shaft, and the No. 2 top block 8 is threadedly connected to the box body. The No. 2 top block 8 can be rotated to move downward to ensure that the No. 1 top block 7 and the No. 2 top block 8 are always in contact with the worm shaft, and the No. 1 top block 7 and the No. 2 top block 8 are used to limit the upper and lower positions of the worm shaft to prevent the worm shaft from moving.

[0033] In the embodiment, Figure 1 , Figure 4As shown, the box body includes a box shell 9 and a box cover 10, and a rubber gasket 11 is provided between the box shell 9 and the box cover 10. The rubber gasket 11 plays a good sealing role and can also play a sound insulation role to reduce the noise in the box body.

[0034] In the embodiment, Figure 2 As shown, the housing is provided with a chip 12 and a signal sensor 13 mounted on the worm shaft. The chip 12 is arranged in the housing to make the housing structure more compact and to accurately control the rotation speed of the worm shaft.

[0035] Obviously, the above embodiments of the present invention are merely examples for illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to provide all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still fall within the scope of protection of the present invention.

Claims

1. A lifting platform push rod motor, comprising a worm shaft and a casing and a housing that cooperate with each other, wherein a mounting hole is provided at the bottom of the housing, and a bearing (1) for cooperating with the worm shaft is installed in the mounting hole, characterized in that: Also includes: At least two limiting grooves (2) are evenly distributed in the circumferential direction of the housing, the limiting grooves (2) comprising a first through groove (21) and a second through groove (22) arranged in an up-down manner, the width of the first through groove (21) being smaller than the width of the second through groove (22); A connecting member (3) for connecting the shell and the box body, the connecting member (3) comprising a first connecting portion (31) and a second connecting portion (32), the first connecting portion (31) being used to cooperate with the limiting groove (2), the second connecting portion (32) being provided with a connecting hole (4), and the top surface of the second connecting portion (32) being in contact with the bottom surface of the bearing (1); The retaining ring (5) is mounted on the worm shaft and is located at the upper and lower ends of the bearing (1).

2. The lifting platform push rod motor according to claim 1, characterized in that: The outer wall of the bottom of the box body is provided with a positioning groove (14) for cooperating with the second connecting portion (32).

3. The lifting platform push rod motor according to claim 1, characterized in that: The limiting groove (2) further comprises a third through groove (23) arranged above the first through groove (21); the limiting groove (2) is in an I-shape.

4. The lifting platform push rod motor according to claim 1, characterized in that: A lead plug (6) is installed on the box body.

5. The lifting platform push rod motor according to claim 1, characterized in that: The bottom of the housing is provided with a first top block (7) for cooperating with the bottom of the worm shaft, and the top of the box body is provided with a second top block (8) for cooperating with the top of the worm shaft. The second top block (8) is threadedly connected to the box body.

6. The lifting platform push rod motor according to claim 1, characterized in that: The box body comprises a box shell (9) and a box cover (10), and a rubber gasket (11) is provided between the box shell (9) and the box cover (10).

7. The lifting platform push rod motor according to claim 1, characterized in that: The box body is provided with a chip (12) and a signal sensor (13) mounted on the worm shaft.

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