Ball screw transmission device

Abstract

The utility model discloses a ball screw transmission device which comprises a screw body, a nut seat is arranged on the screw body, a connecting seat is fixedly installed on the nut seat, a clutch mechanism is fixedly installed at one end of the screw body, the clutch mechanism comprises a first shaft sleeve fixed at one end of the screw body, and a second shaft sleeve fixed at the other end of the screw body. A positioning shaft is fixedly installed in the first shaft sleeve, a spring is arranged on the positioning shaft in a sleeved mode, a connecting plate is movably installed on the positioning shaft, connecting openings are formed in the connecting plate, small balls are arranged on the connecting plate and located between the connecting openings, limiting clamping pins are arranged on the two sides of the first shaft sleeve, and a butt joint mechanism is arranged in the first shaft sleeve. According to the ball screw transmission device, power of the motor can be transmitted to the screw body through the butt joint mechanism, so that the screw body is driven to rotate, the clutch mechanism can disconnect the power of the motor after a mechanical part on the connecting base is clamped, and the motor is prevented from being burnt out.

Description

Technical Field

[0001] The utility model relates to the field of ball screws, in particular to a ball screw transmission device. Background Art

[0002] Ball screw, also known as ball screw, is a transmission element most commonly used in tool machinery and precision machinery. Its main function is to convert rotational motion into linear motion, or to convert torque into axial repetitive force. Ball screw has very small friction resistance, so it is widely used in various industrial equipment and precision instruments. During use, mechanical parts may get stuck. After the mechanical parts get stuck, the motor driving the screw is still running, but the screw cannot rotate, which may easily cause the motor driving the screw to burn out. For this reason, a ball screw transmission device is proposed. Utility Model Content

[0003] The main purpose of the utility model is to provide a ball screw transmission device, which can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A ball screw transmission device comprises a screw body, a nut seat is provided on the screw body, a connecting seat is fixedly installed on the nut seat, a clutch mechanism is fixedly installed on one end of the screw body, and the clutch mechanism comprises a first sleeve fixed to one end of the screw body, a positioning shaft is fixedly installed in the first sleeve, a spring is sleeved on the positioning shaft, a connecting plate is movably installed on the positioning shaft, a connecting port is provided on the connecting plate, a small ball is provided on the connecting plate between the connecting ports, limit pins are provided on both sides of the first sleeve, a docking mechanism is provided in the first sleeve, and the docking mechanism comprises a second sleeve connected to the first sleeve, a limit screw hole is provided on the second sleeve, a limit screw is provided in the limit screw hole, a connecting protrusion is fixedly installed on one end of the second sleeve, and a ball groove is provided around the connecting protrusion at one end of the second sleeve.

[0006] Furthermore, a movable groove is provided on the connecting plate, and the small ball is movably mounted on the connecting plate through the movable groove.

[0007] Furthermore, a movable hole is opened in the middle of the connecting plate, and the connecting plate is movably mounted on the positioning shaft through the movable hole. One end of the spring is connected to the connecting plate, and the other end of the spring is connected to one end of the first sleeve.

[0008] Furthermore, the connecting protrusion on the second sleeve is aligned with the connecting port on the connecting plate in the horizontal direction, the small ball on the connecting plate is aligned with the ball groove on the second sleeve in the horizontal direction, and the diameter of the ball groove is larger than the diameter of the small ball.

[0009] Furthermore, the limiting screw is connected to the second sleeve through the limiting screw hole, and the connecting protrusion is connected to the connecting plate through the connecting port.

[0010] Furthermore, the docking mechanism is installed on the screw body through a clutch mechanism.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The second sleeve can be fixed to the output shaft of the motor by a limit screw. After the second sleeve is fixed to the output shaft of the motor, the spring will push the connecting plate close to the second sleeve, so that the connecting plate is pressed against the second sleeve, so that the motor can drive the screw body. When the mechanical parts on the connecting seat are stuck, the motor will still drive the second sleeve to rotate, so that the connecting protrusion will be separated from the connecting port. After the connecting protrusion falls off the connecting port, it will rotate to the small ball, thereby squeezing the connecting plate to move backward. The connecting plate moving backward will be stuck by the limit pin, so that the second sleeve is separated from the connecting plate, stopping the transmission of the power of the motor, allowing the motor to idle, and preventing the motor from burning out. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Figure 3 It is a schematic diagram of the clutch mechanism of the utility model;

[0016] Figure 4 It is a schematic diagram of the docking mechanism of the utility model.

[0017] In the figure: 1. screw rod body; 2. nut seat; 3. connecting seat; 4. clutch mechanism; 401. first sleeve; 402. positioning shaft; 403. spring; 404. connecting plate; 405. connecting port; 406. small ball; 407. limiting latch; 5. docking mechanism; 501. second sleeve; 502. limiting screw; 503. limiting screw hole; 504. connecting protrusion; 505. ball groove. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1As shown, a ball screw transmission device includes a screw body 1, a nut seat 2 is provided on the screw body 1, a connecting seat 3 is fixedly installed on the nut seat 2, a clutch mechanism 4 is fixedly installed at one end of the screw body 1, a docking mechanism 5 is provided in the first sleeve 401, and the docking mechanism 5 is installed on the screw body 1 through the clutch mechanism 4. The power of the motor can be transmitted to the screw body 1 through the docking mechanism 5, thereby driving the screw body 1 to rotate, and after the mechanical parts on the connecting seat 3 are stuck, the clutch mechanism 4 will disconnect the power of the motor to prevent the motor from burning out.

[0020] like Figure 2 Figure 3 As shown, the clutch mechanism 4 includes a first sleeve 401 fixed at one end of the screw body 1, a positioning shaft 402 is fixedly installed in the first sleeve 401, a spring 403 is sleeved on the positioning shaft 402, a connecting plate 404 is movably installed on the positioning shaft 402, a connecting port 405 is opened on the connecting plate 404, and a small ball 406 is arranged between the connecting ports 405 on the connecting plate 404, limit pins 407 are arranged on both sides of the first sleeve 401, a movable groove is opened on the connecting plate 404, the small ball 406 is movably installed on the connecting plate 404 through the movable groove, a movable hole is opened in the middle position of the connecting plate 404, and the connecting plate 404 is movably installed on the positioning shaft 402 through the movable hole, one end of the spring 403 is connected to the connecting plate 404, and the other end of the spring 403 is connected to one end of the first sleeve 401.

[0021] Specifically, the spring 403 will provide elastic force for the connecting plate 404, so that the connecting plate 404 is pressed against one end of the second sleeve 501. After the connecting plate 404 is pressed against one end of the second sleeve 501, the connecting protrusion 504 will be embedded in the connecting port 405, so that the second sleeve 501 is used to drive the first sleeve 401. After the mechanical parts on the connecting seat 3 are stuck, the motor will still drive the second sleeve 501 to rotate, so that the connecting protrusion 504 falls off the connecting port 405. After the connecting protrusion 504 falls off the connecting port 405, it will rotate to the small ball 406, thereby squeezing the connecting plate 404 to move backward, and the connecting plate 404 is stuck at the limit pin 407, so that the second sleeve 501 is separated from the connecting plate 404, the power transmission of the motor is stopped, and the motor is allowed to idle.

[0022] like Figure 2 Figure 4As shown, the docking mechanism 5 includes a second sleeve 501 connected to the first sleeve 401, a limiting screw hole 503 is provided on the second sleeve 501, a limiting screw 502 is provided in the limiting screw hole 503, a connecting protrusion 504 is fixedly installed on one end of the second sleeve 501, a ball groove 505 is provided around the connecting protrusion 504 at one end of the second sleeve 501, the connecting protrusion 504 on the second sleeve 501 is aligned with the connecting port 405 on the connecting plate 404 in the horizontal direction, the small ball 406 on the connecting plate 404 is aligned with the ball groove 505 on the second sleeve 501 in the horizontal direction, and the diameter of the ball groove 505 is greater than the diameter of the small ball 406, the limiting screw 502 is connected to the second sleeve 501 through the limiting screw hole 503, and the connecting protrusion 504 is connected to the connecting plate 404 through the connecting port 405.

[0023] Specifically, the second sleeve 501 can be fixed to the output end of the motor by the limit screw 502, so that the second sleeve 501 can be driven to rotate by the motor. After the second sleeve 501 rotates, it will drive the screw body 1 on the first sleeve 401 to rotate.

[0024] It should be noted that the utility model is a ball screw transmission device. In actual use, the second sleeve 501 is first fixed to the output end of the motor. At this time, the spring 403 will push the connecting plate 404 close to the second sleeve 501, so that the connecting plate 404 is pressed against the second sleeve 501. The connecting plate 404 is pressed against the second sleeve 501 and the screw body 1 can be driven to rotate by the motor. Once the mechanical parts on the connecting seat 3 are stuck, the motor will still drive the second sleeve 501 to rotate, so that the connecting protrusion 504 falls off the connecting port 405. After the connecting protrusion 504 falls off the connecting port 405, it will rotate to the small ball 406, thereby squeezing the connecting plate 404 to move backward, and the connecting plate 404 is stuck at the limit pin 407, so that the second sleeve 501 is separated from the connecting plate 404, and the power transmission of the motor is stopped, allowing the motor to idle and prevent the motor from burning out. After the inspection is completed, the limit pin 407 can be loosened. After the limit pin 407 is loosened, the spring 403 will push the connecting plate 404 to reset and transmit power again.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A ball screw transmission device, comprising a screw body (1), characterized in that: The screw body (1) is provided with a nut seat (2), a connecting seat (3) is fixedly mounted on the nut seat (2), a clutch mechanism (4) is fixedly mounted on one end of the screw body (1), the clutch mechanism (4) comprises a first shaft sleeve (401) fixedly mounted on one end of the screw body (1), a positioning shaft (402) is fixedly mounted in the first shaft sleeve (401), a spring (403) is sleeved on the positioning shaft (402), a connecting plate (404) is movably mounted on the positioning shaft (402), a connecting port (405) is provided on the connecting plate (404), and a spring (403) is sleeved on the positioning shaft (402). 05), a small ball (406) is provided between the first sleeve (401), limiting pins (407) are provided on both sides of the first sleeve (401), a docking mechanism (5) is provided inside the first sleeve (401), the docking mechanism (5) comprises a second sleeve (501) connected to the first sleeve (401), a limiting screw hole (503) is provided on the second sleeve (501), a limiting screw (502) is provided in the limiting screw hole (503), a connecting protrusion (504) is fixedly installed at one end of the second sleeve (501), and a ball groove (505) is provided around the connecting protrusion (504) at one end of the second sleeve (501).

2. A ball screw transmission device according to claim 1, characterized in that: The connecting plate (404) is provided with a movable groove, and the small ball (406) is movably mounted on the connecting plate (404) through the movable groove.

3. A ball screw transmission device according to claim 2, characterized in that: A movable hole is provided in the middle of the connecting plate (404), and the connecting plate (404) is movably mounted on the positioning shaft (402) through the movable hole. One end of the spring (403) is connected to the connecting plate (404), and the other end of the spring (403) is connected to one end of the first shaft sleeve (401).

4. A ball screw transmission device according to claim 3, characterized in that: The connecting protrusion (504) on the second sleeve (501) is aligned with the connecting port (405) on the connecting plate (404) in the horizontal direction, the small ball (406) on the connecting plate (404) is aligned with the ball groove (505) on the second sleeve (501) in the horizontal direction, and the diameter of the ball groove (505) is greater than the diameter of the small ball (406).

5. A ball screw transmission device according to claim 4, characterized in that: The limiting screw (502) is connected to the second shaft sleeve (501) through the limiting screw hole (503), and the connecting protrusion (504) is connected to the connecting plate (404) through the connecting port (405).

6. A ball screw transmission device according to claim 5, characterized in that: The docking mechanism (5) is installed on the screw body (1) via a clutch mechanism (4).

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