Motor shaft automatic clamping tool with protection function

Abstract

The automatic motor shaft clamping tool with the protection function comprises a machine frame, stand columns, a top plate, a connecting plate, a telescopic air cylinder, an upper clamping block, a lower clamping block, an upper pressing plate, a lower carrying plate, a limiting rod, a touch switch, a key switch and a control module, a cylinder body of the telescopic air cylinder is fixedly installed on the top plate, and a piston rod of the telescopic air cylinder is fixedly connected with the connecting plate. According to the tool, the limiting rod makes contact with the upper pressing plate for stopping and limiting, potential safety hazards caused when the telescopic air cylinder stretches out due to misoperation or equipment faults are avoided, the shaft of the hub motor is clamped and fixed, the telescopic air cylinder is started to push the upper clamping block and the lower clamping block to be matched to clamp the shaft, the tool further has the advantage of being convenient to clamp and operate, and the working efficiency is improved. Meanwhile, it can be guaranteed that the shaft can be clamped by the upper clamping block and the lower clamping block in the middle of the shaft, and the safety of the hub motor in the testing process is further improved.

Description

An automatic clamping fixture for motor shafts with protective functions Technical Field

[0001] This utility model belongs to the field of hub motor testing technology, and in particular relates to an automatic clamping fixture for motor shafts with protective functions. Background Technology

[0002] Hub motors embed the motor within the wheel hub, eliminating the need for traditional drive shafts and differentials, enabling direct power output, improving efficiency, and simplifying the structure. Hub motor testing includes power and torque testing, dynamic response testing, and durability testing. During testing, the hub motor is clamped and fixed to a positioning fixture. Existing hub motor shaft clamping fixtures pose a certain safety hazard; if the operator's fingers are positioned between the upper and lower clamping blocks, the operator's fingers could be trapped when the upper clamping block is activated. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to improve the automatic clamping fixture for motor shafts with high safety and protective function.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: an automatic clamping fixture for motor shafts with protective function, comprising a frame, columns, a top plate, a connecting plate, a telescopic cylinder, an upper clamping block, a lower clamping block, an upper pressure plate, a lowering plate, a limit rod, a touch switch, a push button switch, and a control module. Four columns are rectangularly distributed and fixedly installed on the frame. The top plate is fixedly installed on the top of the columns. The connecting plate is slidably sleeved on the columns. The cylinder body of the telescopic cylinder is fixedly installed on the top plate, and the piston rod of the telescopic cylinder is fixedly connected to the connecting plate. The upper and lower clamping blocks are respectively fixedly installed on the connecting plate and the frame, and upper V-shaped clamping jaws are provided on the upper and lower clamping blocks. The lower clamping jaw, upper pressure plate, and downloading plate are fixedly installed on the upper clamping block and lower clamping block, respectively. The downloading plate has a first through hole in the left and right direction, and a spring groove in the first through hole. The top surface of the downloading plate has a sliding groove that communicates with the first through hole. A guide rod is slidably installed in the first through hole. A limit rod is located in the sliding groove, and the lower end of the limit rod is fixedly connected to the guide rod. The upper pressure plate is provided with a second through hole that cooperates with the limit rod. A spring is sleeved on the guide rod. The two ends of the spring act on the left end of the spring groove and the limit rod, respectively. A touch switch is fixedly installed on the downloading plate, and a button switch is fixedly installed on the frame. The touch switch and the button switch are respectively connected to the control module through circuits.

[0005] Preferably, the right end of the guide rod extends 3-5cm beyond the right end face of the download plate, and a limiting stop ring acting on the right end face of the download plate is fixedly sleeved on the right end of the guide rod.

[0006] Preferably, the first through hole is configured as a square hole structure.

[0007] Preferably, the lower clamping block is fixedly mounted on the base, and the base is screwed and fixedly mounted on the frame.

[0008] Preferably, the outer edge of the top surface of the limiting rod is configured with an angled structure.

[0009] Compared with the prior art, the advantages of this utility model are: this tooling uses a limiting rod to contact and block the upper pressure plate, avoiding safety hazards caused by the extension of the telescopic cylinder due to misoperation or equipment failure. By clamping and fixing the shaft of the hub motor, the telescopic cylinder pushes the upper and lower clamping blocks to clamp the shaft after starting. This method also has the advantage of convenient clamping operation, and at the same time, it can ensure that the shaft can be clamped in the middle position by the upper and lower clamping blocks, further improving the safety of hub motor testing. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings.

[0011] Figure 1 is a front view of this utility model.

[0012] Figure 2 is an enlarged structural diagram of point M in Figure 1.

[0013] Figure 3 is a schematic diagram of the upper clamping block and the lower clamping block. Detailed Implementation

[0014] The present invention will now be described in detail with reference to specific embodiments:

[0015] As shown in Figures 1 to 3, an automatic motor shaft clamping fixture with protective function includes a frame 1, columns 2, a top plate 3, a connecting plate 4, a telescopic cylinder 31, an upper clamping block 61, a lower clamping block 62, an upper pressure plate 7, a lowering plate 8, a limit rod 9, a touch switch 91, a push button switch 92, and a control module. The four columns 2 are rectangularly distributed and fixedly installed on the frame 1. The top plate 3 is fixedly installed on the top of the columns 2. The connecting plate 4 is slidably fitted onto the columns 2. The cylinder body of the telescopic cylinder 31 is fixedly installed on the top plate 3, and the piston rod of the telescopic cylinder 31 is fixedly connected to the connecting plate 4. The upper clamping block 61 and the lower clamping block 62 are respectively fixedly installed on the connecting plate 4 and the frame 1. The upper clamping block 61 and the lower clamping block 62 are equipped with an upper V-shaped clamping jaw 611 and a lower V-shaped clamping jaw 621, respectively. Plate 7 and download plate 8 are fixedly installed on upper clamping block 61 and lower clamping block 62, respectively. Download plate 8 has a first through hole in the left and right direction. The first through hole has a spring groove 80. The top surface of download plate 8 has a sliding groove 84 that communicates with the first through hole. A guide rod 81 is slidably installed in the first through hole. A limiting rod 9 is located in the sliding groove 84, and the lower end of the limiting rod 9 is fixedly connected to the guide rod 81. The upper pressure plate 7 is provided with a second through hole 71 that cooperates with the limiting rod 9. A spring 82 is sleeved on the guide rod 81. The two ends of the spring 80 act on the left end of the spring groove 80 and the limiting rod 9, respectively. Touch switch 91 is fixedly installed on download plate 8, and button switch 92 is fixedly installed on frame 1. Touch switch 91 and button switch 92 are respectively connected to the control module through circuit.

[0016] The right end of the guide rod 81 extends 3-5cm beyond the right end face of the download plate 8. A limiting stop ring 83 is fixedly sleeved on the right end of the guide rod 81, acting on the right end face of the download plate 8. The limiting stop ring 83 is fixedly installed on the guide rod 81 by bolts. After loosening the bolts, the installation position of the limiting stop ring 83 can be adjusted. By contacting the right end face of the download plate 8 with the limiting stop ring 83, the extreme position of the leftward movement of the guide rod 81 and the limiting rod 9 assembly can be limited, so that the limiting rod 9 is not positioned by the left end face of the slide groove 84. At the same time, the extreme position of the leftward movement of the guide rod 81 and the limiting rod 9 assembly can be adjusted. The telescopic cylinder 31 is connected to the air pressure station through pipelines and a solenoid valve. The solenoid valve is connected to the control module through a circuit.

[0017] The first through hole is configured as a square hole structure, and the guide rod 81 is configured as a square shaft structure. The two are installed together to prevent the guide rod 81 from rotating and to ensure that the limit rod 9 is always in a vertical state.

[0018] The lower clamping block 62 is fixedly installed on the base 5, and the base 5 is screwed and fixedly installed on the frame 1. The installation height of the lower clamping block 62 can be increased by the base 5 to avoid interference between the tire of the hub motor 10 and the frame 1.

[0019] The outer edge of the top surface of the limiting rod 9 is set with an angled structure to provide guidance for the top of the limiting rod 9 to enter the second through hole 71.

[0020] Pressing the button switch 92 causes the control module to retract the piston rod of the telescopic cylinder 31 upwards, causing the upper clamping block 61 to separate from the lower clamping block 62. The combination of the limiting rod 9 and the guide rod 81 moves to the right under the action of the spring 82. The limiting rod 9 is located in a position not directly below the second through hole 71. Even if the piston rod of the telescopic cylinder 31 extends downwards to push the upper clamping block 61 downwards, it will be blocked by the contact between the limiting rod 9 and the upper pressure plate 7. The shaft 101 of the hub motor 10 is placed between the V-shaped clamp 611 and the lower clamp 621. The operator pushes the shaft 101 of the hub motor 10. When the limit rod 9 comes into contact with the limit rod 81, the combination of the limit rod 9 and the guide rod 81 moves to the left against the elastic force of the spring 82. When the limit rod 9 comes into contact with the touch switch 91, the limit rod 9 is located directly below the second through hole 71. After it is activated, the touch switch 91 sends an electrical signal to the control module. The control module controls the piston rod of the telescopic cylinder 31 to extend downward. The limit rod 9 slides into the second through hole 71, pushing the upper clamping block 61 to move downward, clamping and fixing the shaft 101 of the hub motor 10 between the V-shaped clamping mouth 611 and the lower clamping mouth 621.

Claims

1. An automatic clamping fixture for motor shafts with protective function, characterized in that: The system includes a frame (1), columns (2), a top plate (3), a connecting plate (4), a telescopic cylinder (31), an upper clamping block (61), a lower clamping block (62), an upper pressure plate (7), a download plate (8), a limit rod (9), a touch switch (91), a push button switch (92), and a control module. The four columns (2) are fixedly installed on the frame (1) in a rectangular arrangement. The top plate (3) is fixedly installed on the top of the columns (2). The connecting plate (4) is slidably installed on the columns (2). The cylinder body of the telescopic cylinder (31) is fixedly installed on the top plate (3). The piston rod of the telescopic cylinder (31) is fixedly connected to the connecting plate (4). The upper clamping block (61) and the lower clamping block (62) are respectively fixedly installed on the connecting plate (4) and the frame (1). The upper clamping block (61) and the lower clamping block (62) are equipped with an upper V-shaped clamping mouth (611) and a lower V-shaped clamping mouth (621). The upper pressure plate (7) and the download plate (8) are also included. The upper clamping block (61) and the lower clamping block (62) are fixedly installed on the upper clamping block (61) and the lower clamping block (62) respectively. The download plate (8) has a first through hole in the left and right direction. The first through hole has a spring groove (80). The top surface of the download plate (8) has a sliding groove (84) that communicates with the first through hole. The first through hole is slidably installed with a guide rod (81). The limit rod (9) is located in the sliding groove (84), and the lower end of the limit rod (9) is fixedly connected to the guide rod (81). The upper pressure plate (7) is provided with a second through hole (71) that cooperates with the limit rod (9). The guide rod (81) is sleeved with a spring (82). The two ends of the spring (82) act on the left end of the spring groove (80) and the limit rod (9) respectively. The touch switch (91) is fixedly installed on the download plate (8), and the button switch (92) is fixedly installed on the frame (1). The touch switch (91) and the button switch (92) are respectively connected to the control module through the circuit.

2. The automatic clamping fixture for motor shafts with protective function according to claim 1, characterized in that: The right end of the guide rod (81) extends 3-5cm beyond the right end face of the download plate (8), and a limiting stop ring (83) that acts on the right end face of the download plate (8) is fixedly sleeved on the right end of the guide rod (81).

3. The automatic motor shaft clamping fixture with protective function according to claim 1, characterized in that: The first through hole is configured as a square hole structure.

4. The automatic motor shaft clamping fixture with protective function according to claim 1, characterized in that: The lower clamping block (62) is fixedly installed on the base (5), and the base (5) is screwed and fixedly installed on the frame (1).

5. The automatic motor shaft clamping fixture with protective function according to claim 1, characterized in that: The outer edge of the top surface of the limiting rod (9) is set as an angled structure.

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