Motor shifting fork mechanism

Abstract

The utility model relates to a motor shifting fork mechanism which comprises a motor assembly, a transmission assembly, a controller, a potentiometer, an overturning shaft and an overturning claw. The motor assembly comprises a Hall motor which is connected with one end of a transmission assembly, the other end of the transmission assembly is connected with one end of a turnover shaft, the other end of the turnover shaft is connected with a turnover claw, and a potentiometer is arranged on the turnover shaft. The potentiometer rotates along with the turnover shaft; the controller is electrically connected with the potentiometer and collects the resistance value of the potentiometer to judge the rotating angle of the overturning shaft so as to judge the overturning angle of the overturning claw. The potentiometer is arranged on the overturning shaft and rotates along with the overturning shaft, and the controller collects the resistance value of the potentiometer to judge the rotating angle of the overturning claw; when the transmission assembly breaks down and the torque of the Hall motor cannot be transmitted to the overturning shaft, the potentiometer and the overturning claw on the overturning shaft are in a static state, the controller collects the information that the resistance value of the potentiometer does not change and is consistent with the information that the overturning claw does not rotate, and the accuracy of the overturning and rotating information collected by the controller is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a motor fork mechanism. Background Art

[0002] A shuttle car type warehousing system is an automated warehousing logistics system that adds high-precision guide rails to traditional shelves and the shuttle car runs smoothly on the high-precision tracks. Multiple shuttle cars can work simultaneously in the same lane, greatly improving the utilization rate of warehousing space. The shuttle car (RGV) is an intelligent handling device in the shuttle car type warehousing system and has been increasingly applied due to its intelligent and flexible characteristics. The turning claw is an actuator of the shuttle car (RGV). When carrying out material handling, the turning claw needs to frequently switch between the working position (such as A in the attachment Figure 2 and the idle position (such as B in the attachment Figure 2 .

[0003] At present, the turning claw mechanism adopts a structural mode composed of a motor, a transmission shaft and a turning claw or a structural mode composed of a motor, a coupling, a transmission shaft and a turning claw. However, the position of the turning claw is detected by a proximity switch. Coupled with the backlash of the coupling itself, there is an error range in the position feedback of the turning claw. Therefore, there will be a position error when the proximity switch detects the position of the turning claw. Usually, the motor needs to be continuously stalled (physically prohibited from further turning) to maintain the accurate position of the turning claw. This method not only reduces the efficiency but also greatly damages the service life of the motor. The Chinese patent document with the patent number 201821420661.X discloses a shuttle car turning claw mechanism. The motor drives the transmission shaft and the turning claw to rotate, and the absolute position of the turning claw is controlled by an angle sensor in the middle. Compared with the prior art turning claw mechanism that detects the position of the turning claw through a proximity switch, the detection accuracy is improved, and there is no need to rely on stalling to maintain the position accuracy, greatly improving the service life of the motor. However, in the patent application scheme, the angle sensor is connected to the output shaft of the motor. After the motor rotates, there may be a failure or slipping of the transmission component, resulting in the situation that the output shaft of the motor rotates but actually cannot transmit the torque to the turning claw through the transmission component. At this time, the turning claw does not rotate, and because the angle sensor is arranged on the output shaft of the motor, the angle sensor detects the rotation of the output shaft of the motor, causing the information of the rotation of the turning claw collected by the controller to be incorrect, thus affecting the overall quality of taking and placing goods. Summary of the Utility Model

[0004] The utility model aims to at least solve one of the technical problems in the related technologies to some extent. For this reason, the utility model provides a motor fork mechanism.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a motor fork mechanism, comprising a motor assembly, a transmission assembly, a controller, a potentiometer, a turning shaft and a turning claw;

[0006] The motor assembly includes a Hall motor. One end of the Hall motor is connected to one end of a transmission assembly, and the other end of the transmission assembly is connected to one end of a turning shaft. The other end of the turning shaft is connected to a turning claw, and a potentiometer is provided on the turning shaft. The potentiometer rotates with the turning shaft.

[0007] The controller is electrically connected to the potentiometer. The controller collects the resistance value of the potentiometer to judge the rotation angle of the turning shaft so as to judge the turning angle of the turning claw.

[0008] In a preferred embodiment of the present utility model, the transmission assembly includes a coupling. The coupling and the output shaft of the Hall motor are located inside a motor base. The output shaft of the Hall motor is connected to the coupling, and a coupling cover plate is provided on one side of the motor base.

[0009] In a preferred embodiment of the present utility model, the potentiometer is provided with a through hole matching the outer diameter of the turning shaft, and the turning shaft passes through the through hole.

[0010] In a preferred embodiment of the present utility model, the turning shaft is provided with a flattened edge along the axial length direction, and the shape of the through hole on the potentiometer matches the outer contour of the turning shaft.

[0011] In a preferred embodiment of the present utility model, both the turning shaft and the potentiometer are located inside a base, and one end of the turning shaft also extends out of the base and is fixedly connected to a turning claw by a screw.

[0012] A taper-end lock washer is further provided between the screw and the turning claw.

[0013] In a preferred embodiment of the present utility model, a first bearing and a second bearing are respectively provided on the outer ring of the turning shaft. The turning shaft is arranged inside the base through the first bearing and the second bearing, and the base and the motor base are connected by screws.

[0014] The first bearing is located on the turning shaft near one end of the coupling, and the second bearing is located on the turning shaft near one side of the turning claw.

[0015] A first hole clip and a second hole clip are further provided on the turning shaft. The first hole clip abuts against one side of the first bearing, and the second hole clip abuts against one side of the second bearing.

[0016] In a preferred embodiment of the present utility model, a shaft clip and a washer are respectively provided on the turning shaft between the turning claw and the base. The shaft clip abuts against the base, and both sides of the washer abut against the base and the turning claw respectively.

[0017] The beneficial effects of the present utility model are as follows: In the motor fork mechanism of the present utility model, the potentiometer is arranged on the flipping shaft; the potentiometer rotates along with the flipping shaft. The controller collects the resistance value of the potentiometer to judge the rotation angle of the flipping claw. When the flipping shaft drives the flipping claw to rotate, the potentiometer rotates synchronously. When the transmission component fails to transmit the torque of the Hall motor to the flipping shaft, both the potentiometer and the flipping claw on the flipping shaft are in a static state. The controller collects that the resistance value of the potentiometer does not change, which is consistent with the information that the flipping claw does not rotate, ensuring the accuracy of the controller in collecting the flipping rotation information and guaranteeing the overall quality of picking and placing goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural view of the present utility model Figure 1 ;

[0019] Figure 2 is a schematic structural view of the present utility model Figure 2 ;

[0020] Figure 3 is an exploded structural schematic view of the present utility model;

[0021] Figure 4 is a schematic structural view of the coupling of the present utility model connected to the Hall motor and the flipping shaft Figure 1 ;

[0022] Figure 5 is a schematic structural view of the coupling of the present utility model connected to the Hall motor and the flipping shaft Figure 2 .

[0023] In the figures: motor assembly 1; Hall motor 101; motor base 102; coupling cover 103; transmission component 2; coupling 201; potentiometer 3; through hole 301; through hole 301; flipping shaft 4; flipping claw 5; base 6; screw 7; taper-end lock washer 8; first bearing 9; second bearing 10; first hole clip 11; second hole clip 12; shaft clip 13. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "a plurality of" is two or more, unless otherwise specifically defined.

[0026] As Figures 1 to 5 shown, a motor fork mechanism includes a motor assembly 1, a transmission assembly 2, a controller, a potentiometer 3, a turning shaft 4, and a turning claw 5;

[0027] The motor assembly 1 includes a Hall motor 101. One end of the Hall motor 101 is connected to one end of the transmission assembly 2. The other end of the transmission assembly 2 is connected to one end of the turning shaft 4. The other end of the turning shaft 4 is connected to the turning claw 5. A potentiometer 3 is provided on the turning shaft 4; the potentiometer 3 rotates with the turning shaft 4.

[0028] The controller is electrically connected to the potentiometer 3. The controller collects the resistance value of the potentiometer 3 to judge the rotation angle of the turning shaft 4 so as to judge the turning angle of the turning claw 5.

[0029] When the motor extraction mechanism of the present utility model is in use, the Hall motor 101 is started. Then the Hall motor 101 drives the turning shaft 4 to rotate through the transmission assembly 2, and further drives the turning claw 5 provided on the turning shaft 4 to rotate. During the rotation of the turning shaft 4, the potentiometer 3 on the turning shaft 4 is also driven to rotate. After the potentiometer 3 rotates, the controller collects the resistance value of the potentiometer, and judges the rotation angle of the turning claw driven by the turning shaft according to the resistance value of the potentiometer, realizing the controllable turning of the turning claw, realizing the slow stop of the turning claw, and ensuring the stability and safety of the turning of the turning claw.

[0030] During the rotation of the Hall motor driving the transmission component, there may be a failure or slippage of the transmission component. At this time, the transmission component cannot transmit the torque of the Hall motor to the turning shaft, so the turning shaft cannot rotate, and thus the rotation of the potentiometer on the turning shaft cannot be realized. When the potentiometer does not rotate with the turning shaft, the resistance value of the potentiometer collected by the controller is fixed, and it can be judged that the turning shaft 4 does not rotate. When the turning shaft 4 does not rotate, it cannot drive the turning claw 5 to rotate, making the information collected by the controller consistent with the action of the motor fork mechanism and ensuring the accuracy of the information collected by the controller.

[0031] As a preferred embodiment, the transmission component 2 in the present application includes a coupling 201; the coupling 201 and the output shaft of the Hall motor 101 are located in the motor base 102. The output shaft of the Hall motor 101 is connected to the coupling 201, and a coupling cover plate 103 is provided on one side of the motor base 102. The output shaft of the Hall motor 1 drives the coupling 201 to rotate, and the protection of the coupling 201 and the output shaft of the Hall motor 1 is realized through the motor base 102 and the coupling cover plate 103.

[0032] As a preferred embodiment, the potentiometer 3 is provided with a through hole 301 matching the outer diameter of the turning shaft 4, and the turning shaft 4 passes through the through hole 301. That is, a through hole 301 matching the turning shaft 4 is opened on the potentiometer 3, which is convenient for fixing the potentiometer on the turning shaft 4; more preferably, a flattened edge 401 is provided on the turning shaft 4 along the axial length direction, and the shape of the through hole 301 on the potentiometer 3 matches the outer contour of the turning shaft 4; the setting of the flattened edge 401 on the turning shaft 4 structurally ensures that the potentiometer 3 is stably fixed on the turning shaft 4, and the potentiometer 3 is not easily offset during work, and at the same time, the anti-fooling property of the installation is ensured.

[0033] As a preferred embodiment, the turning shaft 4 and the potentiometer 3 are both located in the base 6, and one end of the turning shaft 4 also extends out of the base 6 and is fixedly connected to a turning claw 5 by a screw 7; the protection of the turning shaft 4 and the potentiometer 3 is realized through the base 6;

[0034] A cone-end lock washer 8 is also provided between the screw 7 and the turning claw 5. When the turning claw 5 frequently switches between the working state and the idle state, the screw 7 is not loosened by vibration, improving the structural stability.

[0035] As a preferred embodiment, a first bearing 9 and a second bearing 10 are respectively provided on the outer ring of the turning shaft 4. The turning shaft 4 is arranged in the base 6 through the first bearing 9 and the second bearing 10, and the base 6 and the motor base 102 are connected by screws 7, increasing the connection tightness between the base 6 and the motor base 2;

[0036] The first bearing 9 is located on one end of the turning shaft 4 close to the coupling 201, and the second bearing 10 is located on one side of the turning shaft 4 close to the turning claw 5;

[0037] The turning shaft 4 is further provided with a first hole clamp 11 and a second hole clamp 12. The first hole clamp 11 abuts against one side of the first bearing 9, and the second hole clamp 12 abuts against one side of the second bearing 10. The stability of the first bearing 9 and the second bearing 10 on the turning shaft 4 is ensured by the arrangement of the first hole clamp 11 and the second hole clamp 12.

[0038] As a preferred embodiment, shaft clamps 13 and washers 14 are respectively arranged on the turning shaft 4 between the turning claws 5 and the base 6. The shaft clamps 13 are arranged in connection with the base 6, and both sides of the washer 14 respectively abut against the base 6 and the turning claws 5. The arrangement of the washer 14 ensures that the surfaces of the base 6 and the turning claws 5 will not be scratched, and the service life is prolonged.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "certain embodiments", "schematic embodiments", "examples", "specific examples" or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] In summary, although the present invention has been disclosed above with the preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those of ordinary skill in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention is subject to the scope defined by the claims.

Claims

1. A motor fork mechanism, characterized in that, It includes a motor assembly (1), a transmission assembly (2), a controller, a potentiometer (3), a turning shaft (4) and a turning claw (5); The motor assembly (1) includes a Hall motor (101). One end of the Hall motor (101) is connected to one end of the transmission assembly (2). The other end of the transmission assembly (2) is connected to one end of the turning shaft (4). The other end of the turning shaft (4) is connected to the turning claw (5). A potentiometer (3) is provided on the turning shaft (4). The potentiometer (3) rotates with the turning shaft (4); The controller is electrically connected to the potentiometer (3). The controller collects the resistance value of the potentiometer (3) to judge the rotation angle of the turning shaft (4) so as to judge the turning angle of the turning claw (5).

2. The motor fork mechanism according to claim 1, characterized in that, The transmission assembly (2) includes a coupling (201). The coupling (201) and the output shaft of the Hall motor (101) are located in the motor base (102). The output shaft of the Hall motor (101) is connected to the coupling (201). A coupling cover plate (103) is provided on one side of the motor base (102).

3. The motor fork mechanism according to claim 1, characterized in that, The potentiometer (3) is provided with a through hole (301) matching the outer diameter of the turning shaft. The turning shaft (4) passes through the through hole (301).

4. The motor fork mechanism according to claim 3, characterized in that A flattened edge (401) is provided on the turning shaft (4) along the axial length direction. The shape of the through hole (301) on the potentiometer (3) matches the outer contour of the turning shaft (4).

5. The motor fork mechanism according to claim 2, wherein, The turning shaft (4) and the potentiometer (3) are both located in the base (6). One end of the turning shaft (4) also extends out of the base (6) and is fixedly connected to the turning claw (5) by a screw (7); A taper-end lock washer (8) is also provided between the screw (7) and the turning claw (5).

6. The motor fork mechanism according to claim 5, wherein, First bearings (9) and second bearings (10) are respectively provided on the outer ring of the turning shaft (4). The turning shaft (4) is arranged in the base (6) through the first bearings (9) and the second bearings (10). The base (6) and the motor base (102) are connected by screws (7); The first bearing (9) is located at one end of the turning shaft (4) close to the coupling (201). The second bearing (10) is located on one side of the turning shaft (4) close to the turning claw (5); First hole cards (11) and second hole cards (12) are also provided on the turning shaft (4). The first hole card (11) abuts against one side of the first bearing (9). The second hole card (12) abuts against one side of the second bearing (10).

7. The motor fork mechanism according to any one of claims 1-6, characterized in that, Shaft cards (13) and washers (14) are respectively provided on the turning shaft (4) between the turning claw (5) and the base (6). The shaft card (13) abuts against the base (6). The two sides of the washer (14) respectively abut against the base (6) and the turning claw (5).

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