Motor fixing device and automatic brake testing system

Abstract

This application discloses a motor fixing device, including a first fixing plate, a second fixing plate, a first clamping plate, a second clamping plate, a drive mechanism, and a connecting plate for connecting a motor end cover. The first fixing plate and the second fixing plate are spaced apart, forming a first opening between them for engaging the motor end cover. The drive mechanism is connected to the first fixing plate, the first clamping plate is slidably connected to the first fixing plate, the drive mechanism is connected to the first clamping plate, and the second clamping plate is fixedly connected to the second fixing plate. A second opening is formed between the first clamping plate and the second clamping plate. The two sides of the connecting plate are clamped in the second opening by the first clamping plate and the second clamping plate, and the two ends of the connecting plate abut against the first fixing plate and the second fixing plate, respectively. This application also discloses an automatic braking test system. This application enables convenient and quick assembly and disassembly of the motor.

Description

Technical Field

[0001] This application relates to the field of motor assembly and disassembly technology, and in particular to a motor fixing device and an automatic braking test system. Background Technology

[0002] Most mainstream stepper motors have mounting holes and positioning flanges on the output shaft side face for reliable fixation and positioning. However, in some scenarios, the motor needs to be removed after use for convenient transportation. For example, in a pedestrian automatic braking test system, a stepper motor is needed to drag a dummy. The stepper motor is fixed to a large base plate. To avoid damaging the base plate due to the motor's weight during transportation, the motor needs to be removed after testing. However, the motor is close to the base plate, and space is limited, making installation and removal inconvenient. Moreover, the timing pulley needs to be removed before removing the motor, resulting in a significant waste of time during disassembly and assembly during testing.

[0003] Existing motors are generally fixed with flanges and multiple bolts, suitable for applications where they are fixed for long periods without disassembly and where there is sufficient space for disassembly and assembly. There are also devices that add L-shaped supports to simplify disassembly and assembly, but these still require tools such as wrenches to remove two bolts and cannot be quickly disassembled by hand without tools.

[0004] Therefore, it is necessary to design a motor fixing device and an automatic braking test system that can facilitate convenient and quick assembly and disassembly of the motor. Summary of the Invention

[0005] The purpose of this application is to overcome the shortcomings of the prior art and provide a motor fixing device and an automatic braking test system, which can quickly and conveniently disassemble and assemble the motor.

[0006] The technical solution of this application provides a motor fixing device, including a first fixing plate, a second fixing plate, a first clamping plate, a second clamping plate, a drive mechanism, and a connecting plate for connecting the motor end cover;

[0007] The first fixing plate and the second fixing plate are spaced apart, and a first opening is formed between the first fixing plate and the second fixing plate for inserting the motor end cover.

[0008] The driving mechanism is connected to the first fixed plate, the first clamping plate is slidably connected to the first fixed plate, the driving mechanism is connected to the first clamping plate, the second clamping plate is fixedly connected to the second fixed plate, and a second opening is formed between the first clamping plate and the second clamping plate, the second opening being larger than the first opening;

[0009] The width of the connecting plate is greater than the width of the motor end cover. The width of the first opening is greater than the width of the motor end cover but less than the width of the connecting plate. The two sides of the connecting plate are clamped in the second opening by the first clamping plate and the second clamping plate. The two ends of the connecting plate abut against the first fixing plate and the second fixing plate, respectively.

[0010] Preferably, the connecting plate is provided with a first engagement slope and a second engagement slope on both sides, the first clamping plate is provided with a third engagement slope that matches the first engagement slope, and the second clamping plate is provided with a fourth engagement slope that cooperates with the second engagement slope.

[0011] When the connecting plate is clamped, the third engagement slope presses against the first engagement slope, and the fourth engagement slope presses against the second engagement slope.

[0012] Preferably, the first and second joint inclined surfaces are symmetrically arranged along the centerline of the connecting plate;

[0013] The first joint inclined surface forms an angle greater than 90° with the end face of the first fixing plate, and the second joint inclined surface forms an angle greater than 90° with the end face of the second fixing plate;

[0014] When the connecting plate is clamped, the third engagement slope presses against the first engagement slope and the first clamping plate presses the connecting plate tightly against the end face of the first fixing plate, the fourth engagement slope presses against the second engagement slope and the second clamping plate presses the connecting plate tightly against the end face of the second fixing plate.

[0015] Preferably, the driving mechanism includes a third fixed plate, a clamping plate, and a driving screw. The clamping plate is spaced apart from the first fixed plate, the third fixed plate is fixedly disposed between the first fixed plate and the clamping plate, and the first clamping plate is slidably disposed between the first fixed plate and the clamping plate.

[0016] The drive screw is threadedly connected to the third fixing plate, and one end of the drive screw extends out of the third fixing plate and is connected to the first clamping plate.

[0017] Preferably, the first clamping plate is provided with a connection port, the connection port including a connecting hole and a bayonet, the connecting hole connecting the bayonet and the outside of the first clamping plate, the diameter of the bayonet being larger than the diameter of the connecting hole, the end of the drive screw being provided with a locking block, the drive screw passing through the connecting hole, and the locking block being engaged in the bayonet.

[0018] Preferably, the third fixing plate is provided with a connecting hole and a mounting port, the mounting port is in communication with the connecting hole, a first nut is provided in the mounting port, and the driving screw passes through the connecting hole and the mounting port and is threadedly connected to the first nut.

[0019] Preferably, one end of the drive screw is connected to the first clamping plate, and the other end extends out of the third fixing plate and is connected to a knob.

[0020] Preferably, the first clamping plate is provided with at least one elongated hole arranged along its sliding direction, and the first fixing plate, the first clamping plate and the clamping plate are connected by a first fixing bolt. The first fixing bolt passes through the elongated hole and connects the first fixing plate and the clamping plate respectively, and the first fixing bolt can slide relative to each other along the elongated hole.

[0021] The present invention also discloses an automatic braking test system, including a base plate and the aforementioned motor fixing device, wherein the motor fixing device is connected to the base plate.

[0022] Preferably, a plurality of fixing holes are arranged at intervals on the base plate, the first fixing plate is fixedly connected to the fixing holes on the base plate by a first fixing bolt, and the second fixing plate is fixedly connected to the fixing holes on the base plate by a second fixing bolt.

[0023] The above technical solution has the following beneficial effects:

[0024] This application enables a connecting plate to be fixedly connected to the motor end cover. The motor end cover is inserted into a first opening, which restricts the left and right movement of the motor. The connecting plate is located in a second opening, and its two sides abut against a first fixing plate and a second fixing plate, respectively, thereby restricting the forward and backward movement of the motor. A drive mechanism drives the first clamping plate to move toward the second clamping plate, so that the connecting plate is clamped and fixed in the second bayonet by the first and second clamping plates, thereby fixing the position of the motor. When it is necessary to disassemble the motor, it is only necessary to control the drive mechanism to move the first clamping plate away from the second clamping plate, which is convenient for disassembly and assembly. Attached Figure Description

[0025] The disclosure of this application will become more readily understood with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. In the drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of the motor fixing device in one embodiment of the present invention;

[0027] Figure 2This is an exploded view of the motor fixing device in one embodiment of the present invention;

[0028] Figure 3 This is a schematic diagram of the driving mechanism in one embodiment of the present invention.

[0029] Reference table for attached figures:

[0030] First fixing plate 10: First nut mounting port 101;

[0031] Second fixing plate 20: Second nut mounting port 201;

[0032] First clamping plate 30: third joint inclined surface 301, elongated hole 302, connecting hole 303, bayonet 304, first fixing bolt 305;

[0033] Second clamping plate 40: Fourth joint inclined surface 401, fourth nut mounting port 402;

[0034] Drive mechanism 50: third fixing plate 501, connecting hole 5011, mounting port 5012, first nut 5013, clamping plate 502, third nut mounting port 5021, drive screw 503, locking block 5031, knob 5032, connecting part 5033;

[0035] Connecting plate 70: First joint slope 701, second joint slope 702;

[0036] Motor end cover 60, base plate 80. Detailed Implementation

[0037] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0038] It is readily understood that, based on the technical solution of this application, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this application. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this application and should not be considered as the entirety of this application or as limitations or restrictions on the technical solution of the application.

[0039] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meanings of the above in this application according to the specific circumstances.

[0041] In one embodiment of the present invention, a motor fixing device is disclosed, such as... Figure 1 As shown, it includes a first fixing plate 10, a second fixing plate 20, a first clamping plate 30, a second clamping plate 40, a drive mechanism 50, and a connecting plate 70 for connecting the motor end cover 60.

[0042] The first fixing plate 10 and the second fixing plate 20 are spaced apart, and a first opening for inserting the motor end cover 60 is formed between the first fixing plate 10 and the second fixing plate 20.

[0043] The drive mechanism 50 is connected to the first fixed plate 10, the first clamping plate 30 is slidably connected to the first fixed plate 10, the drive mechanism 50 is connected to the first clamping plate 30, the second clamping plate 40 is fixedly connected to the second fixed plate 20, and a second opening is formed between the first clamping plate 30 and the second clamping plate 40, the second opening being larger than the first opening.

[0044] The width of the connecting plate 70 is greater than the width of the motor end cover 60. The width of the first opening is greater than the width of the motor end cover 60 but less than the width of the connecting plate 70. The two sides of the connecting plate 70 are clamped in the second opening by the first clamping plate 30 and the second clamping plate 40. The two ends of the connecting plate 70 abut against the first fixing plate 10 and the second fixing plate 20 respectively.

[0045] Among them, such as Figure 1 As shown, the forward and backward direction of the motor is defined as the X-axis, the left and right direction of the motor is defined as the Y-axis, and the height direction of the motor is defined as the Z-axis.

[0046] Furthermore, the positions of the first fixing plate 10 and the second fixing plate 20 are fixed, and the thicknesses of the first fixing plate 10 and the second fixing plate 20 are equal. The first clamping plate 30 and the second clamping plate 40 are respectively disposed on the same side of the first fixing plate 10 and the second fixing plate 20. The thicknesses of the first clamping plate 30 and the second clamping plate 40 are equal, and the end face of the first clamping plate 30 is in contact with the end face of the first fixing plate 10, and the end face of the second clamping plate 40 is in contact with the end face of the second fixing plate 20. The driving mechanism 50 is connected to the first fixing plate 10, and the driving mechanism 50 is connected to the first clamping plate 30 and can drive the first clamping plate 30 to move toward / away from the second clamping plate 40, thereby allowing the second opening formed between the first clamping plate 30 and the second clamping plate 40 to shrink / enlarge.

[0047] The width of the first opening formed by the first fixing plate 10 and the second fixing plate 20 is slightly larger than the width of the motor end cover 60. The width of the motor end cover 60 is equal to or greater than the width of the motor body. The motor end cover 60 can be inserted into the first opening. The two sides of the motor end cover 60 abut against the first fixing plate 10 and the second fixing plate 20 respectively, thereby restricting the Y-direction movement of the motor.

[0048] like Figure 2As shown, the connecting plate 70 has multiple first mounting holes, which correspond to the second mounting holes on the motor end cover 60. The first mounting holes and the second mounting holes are connected by first fastening screws to fix the connecting plate 70 to the surface of the motor end cover 60. The width of the connecting plate 70 is greater than the width of the motor end cover 60 and also greater than the width of the first opening. Both sides of the connecting plate 70 extend outwards to form extensions, the end faces of which abut against the end faces of the first fixing plate 10 and the second fixing plate 20, respectively, thereby restricting the X-axis movement of the motor. The driving mechanism 50 drives the first clamping plate 30 to move closer to the second clamping plate 40, thus reducing the width of the second opening. The first clamping plate 30 and the second clamping plate 40 then clamp the connecting plate 70 within the second opening, further restricting the motor's movement. When the motor needs to be secured, the operator first pre-fixes the connecting plate 70 to the motor end cover 60. Then, the drive mechanism 50 moves the first clamping plate 30 away from the second clamping plate 40, making the width of the second opening greater than the width of the connecting plate 70. Next, the motor is inserted into the fixing device along the Z-axis, so that the motor end cover 60 is engaged in the first opening and the connecting plate 70 is in the second opening. Then, the drive mechanism 50 moves the first clamping plate 30 closer to the second clamping plate 40, clamping the connecting plate 70 between the first and second clamping plates 30 and 40, thus fixing the motor's position. When disassembling the motor, the drive mechanism 50 moves the first clamping plate 30 away from the second clamping plate 40, allowing the motor to be lifted and removed along the Z-axis, making disassembly and assembly convenient and easy.

[0049] In some embodiments of the present invention, such as Figure 2 As shown, the connecting plate 70 has a first engagement slope 701 and a second engagement slope 702 on both sides, the first clamping plate 30 has a third engagement slope 301 that matches the first engagement slope 701, and the second clamping plate 40 has a fourth engagement slope 401 that cooperates with the second engagement slope 702.

[0050] When the connecting plate 70 is clamped, the third engagement slope 301 presses against the first engagement slope 701, and the fourth engagement slope 401 presses against the second engagement slope 702.

[0051] In some embodiments of the present invention, such as Figure 2 As shown, the first joint inclined surface 701 and the second joint inclined surface 702 are symmetrically arranged along the centerline of the connecting plate 70;

[0052] The first joint inclined surface 701 forms an angle greater than 90° with the end face of the first fixing plate 10, and the second joint inclined surface 702 forms an angle greater than 90° with the end face of the second fixing plate 20.

[0053] When the connecting plate 70 is clamped, the third engagement slope 301 presses against the first engagement slope 701 and the first clamping plate 30 presses the connecting plate 70 tightly against the end face of the first fixing plate 10, the fourth engagement slope 401 presses against the second engagement slope 702 and the second clamping plate 40 presses the connecting plate 70 tightly against the end face of the second fixing plate 20.

[0054] Furthermore, the first engagement slope 701 and the second engagement slope 702 are respectively disposed on the extensions on both sides of the connecting plate 70. The width of the end face of the connecting plate 70 connected to the motor end cover 60 is greater than the end face on the side away from the motor end cover 60, thereby forming the first engagement slope 701 and the second engagement slope 702. This results in an angle greater than 90° between the first engagement slope 701 and the end face of the first fixing plate 10, and an angle greater than 90° between the second engagement slope 702 and the end face of the second fixing plate 20. Correspondingly, the third engagement slope 301 is matched with the first engagement slope 701, and the fourth engagement slope 401 is matched with the second engagement slope 702. When the first clamping plate 30 and the second clamping plate 40 are connected... When plate 70 is clamped, the third engagement slope 301 presses tightly against the first engagement slope 701, and the fourth engagement slope 401 presses tightly against the second engagement slope 702. At this time, the first clamping plate 30 and the second clamping plate 40 apply a force to the connecting plate 70 in the direction of the first fixing plate 10 and the second fixing plate 20, so that both sides of the connecting plate 70 can be tightly pressed between the first clamping plate 30 and the first fixing plate 10, and between the second clamping plate 40 and the second fixing plate 20. This restricts the X-axis and Y-axis movement of the motor. At the same time, the force applied by the first clamping plate 30 and the second clamping plate 40 to the connecting plate 70 restricts the Z-axis movement of the motor, thereby preventing Z-axis swaying of the motor during testing. This makes the motor more stable and secure.

[0055] Optionally, an elastic sheet is provided between the first engagement slope 701 and the third engagement slope 301, and between the second engagement slope 702 and the fourth engagement slope 401. The elastic sheet can be made of rubber. When the first clamping plate 30 and the second clamping plate 40 clamp the connecting plate 70, the elastic sheet can prevent the gaps between the first engagement slope 701 and the third engagement slope 301, and between the second engagement slope 702 and the fourth engagement slope 401, so as to reduce the inability of the first clamping plate 30 and the second clamping plate 40 to firmly clamp the connecting plate 70 due to manufacturing errors or wear and tear. At the same time, the elastic sheet can also increase the friction between the first clamping plate 30, the second clamping plate 40 and the connecting plate 70, making the fixation more stable.

[0056] In some embodiments of the present invention, such as Figure 3As shown, the drive mechanism 50 includes a third fixed plate 501, a clamping plate 502 and a drive screw 503. The clamping plate 502 is spaced apart from the first fixed plate 10. The third fixed plate 501 is fixedly disposed between the first fixed plate 10 and the clamping plate 502. The first clamping plate 30 is slidably disposed between the first fixed plate 10 and the clamping plate 502.

[0057] The drive screw 503 is threadedly connected to the third fixing plate 501, and one end of the drive screw 503 extends out of the third fixing plate 501 and is connected to the first clamping plate 30.

[0058] Furthermore, the third fixing plate 501 and the first clamping plate 30 are both disposed between the first fixing plate 10 and the clamping plate 502. The third fixing plate 501 is disposed on the outside of the first clamping plate 30. The first fixing plate 10, the third fixing plate 501 and the clamping plate 502 are fixedly connected together by a plurality of second fastening screws.

[0059] Furthermore, such as Figure 3 As shown, the drive screw 503 is arranged along the Y direction. One end of the drive screw 503 passes through the third fixing plate 501 and is connected to the first clamping plate 30, while the other end extends to the outside of the third fixing plate 501 for easy rotation by the user. The operator can rotate the drive screw 503 externally, causing it to move along the Y direction under the action of its thread, thereby moving the first clamping plate 30 along the Y direction and achieving the function of clamping / releasing the connecting plate 70.

[0060] In some embodiments of the present invention, such as Figure 3 As shown, the first clamping plate 30 is provided with a connection port, which includes a connecting hole 303 and a bayonet 304. The connecting hole 303 connects the bayonet 304 and the outside of the first clamping plate 30. The diameter of the bayonet 304 is larger than the diameter of the connecting hole 303. The end of the drive screw 503 is provided with a locking block 5031. The drive screw 503 passes through the connecting hole 303, and the locking block 5031 is engaged in the bayonet 304.

[0061] Furthermore, such as Figure 3 As shown, the connecting hole 5011 and the bayonet 304 are open in the X direction and covered by the clamp 502. When installing the clamp 5031 for the first time, the clamp 502 can be removed first, and the operator can then insert the drive screw 503 and the clamp 5031 into the connecting hole 5011 and the bayonet 304 respectively in the X direction. Then the clamp 502 is installed to cover the connecting hole 5011 and the bayonet 304.

[0062] The locking block 5031 is fixedly connected to the end of the drive screw 503. When the drive screw 503 rotates, the locking block 5031 can rotate within the bayonet 304, and the end face of the locking block 5031 can abut against the end face of the bayonet 304 to drive the first clamping plate 30 to move along the Y direction. By using the drive screw 503 to drive the first clamping plate 30, the first clamping plate 30 can apply a stable clamping force to the connecting plate 70.

[0063] Furthermore, the locking block 5031 is connected to the end of the drive screw 503 via the connecting part 5033. The diameter of the connecting hole 303 is smaller than the diameter of the bayonet 304 and smaller than the diameter of the drive screw 503, but larger than the diameter of the connecting part 5033. The diameter of the locking block 5031 is larger than the diameter of the connecting hole 303. The connecting part 5033 passes through the connecting hole 303 and connects to the locking block 5031 located in the bayonet 304.

[0064] In some embodiments of the present invention, such as Figure 3 As shown, the third fixing plate 501 is provided with a connecting hole 5011 and a mounting port 5012. The mounting port 5012 communicates with the connecting hole 5011. A first nut 5013 is provided in the mounting port 5012. The driving screw 503 passes through the connecting hole 5011 and the mounting port 5012 and is threadedly connected to the first nut 5013.

[0065] Furthermore, such as Figure 3 As shown, the connecting hole 5011 extends through the mounting opening 5012 along the Y direction. The mounting opening 5012 is open in the X direction. When assembling this fixing device, the operator can insert the first nut 5013 into the mounting opening 5012 along the X direction, and then insert the drive screw 503 into the connecting hole 5011 along the Y direction to cooperate with the first nut 5013 in the mounting opening 5012. The first nut 5013 is fixed in the Y direction and cannot be rotated. Therefore, by rotating the drive screw 503, the drive screw 503 can be moved along the Y direction under the action of the thread, thereby driving the first clamping plate 30 to move along the Y direction. By setting the first nut 5013, there is no need to tap the third fixing plate 501, and when the first nut 5013 is worn, it is easy to replace the severely worn first nut 5013.

[0066] Optionally, the connecting hole 5011 is a threaded hole, and the drive screw 503 is threadedly connected to the connecting hole 5011.

[0067] In some embodiments of the present invention, such as Figure 3As shown, one end of the drive screw 503 is connected to the first clamping plate 30, and the other end extends out of the third fixing plate 501 and is connected to the knob 5032. The knob 5032 allows the user to easily rotate the drive screw 503. When disassembling or assembling the motor, the connecting plate 70 can be clamped and released simply by manually rotating the knob 5032.

[0068] In some embodiments of the present invention, such as Figure 3 As shown, the first clamping plate 30 is provided with at least one elongated hole 302 arranged along its sliding direction. The first fixing plate 10, the first clamping plate 30 and the clamping plate 502 are connected by a first fixing bolt 305. The first fixing bolt 305 passes through the elongated hole 302 and is respectively connected to the first fixing plate 10 and the clamping plate 502. The first fixing bolt 305 can slide relative to each other along the elongated hole 302.

[0069] Furthermore, the elongated hole 302 is provided along the Y direction, wherein the first fixing bolt 305 passes through the elongated hole 302. By providing the elongated hole 302, it can play a guiding role when the first clamping plate 30 slides.

[0070] Optionally, multiple sets of elongated holes 302 can be configured.

[0071] This invention also discloses an automatic braking test system, such as Figure 1 As shown, it includes a base plate 80 and the aforementioned motor fixing device, which is connected to the base plate 80.

[0072] In some embodiments of the present invention, a plurality of fixing holes are arranged at intervals on the base plate 80, the first fixing plate 10 is fixedly connected to the fixing holes on the base plate 80 by the first fixing bolt 305, and the second fixing plate 20 is fixedly connected to the fixing holes on the base plate 80 by the second fixing bolt.

[0073] Furthermore, such as Figure 2As shown, the first fixing plate 10 has multiple first fastening holes arranged along the Z-direction, and the ends of the first fastening holes have first nut mounting openings 101 that open in the X-direction, communicating with the first fastening holes. The second fixing plate 20 has multiple second fastening holes arranged along the Z-direction, and the ends of the second fastening holes have second nut mounting openings 201 that open in the X-direction, communicating with the second fastening holes. The clamping plate 502 has multiple third fastening holes arranged along the Z-direction, and the ends of the third fastening holes have third nut mounting openings 5021 that open in the X-direction, communicating with the third fastening holes. The second clamping plate 40 has multiple fourth fastening holes arranged along the Z-direction, and the ends of the fourth fastening holes have fourth nut mounting openings 402 that open in the X-direction, communicating with the fourth fastening holes. Nuts are provided in the first nut mounting port 101, the second nut mounting port 201, the third nut mounting port 5021 and the fourth nut mounting port 402, and are connected to the base plate 80 by the first fixing bolt 305 passing through the first fastening hole, the second fastening hole, the third fastening hole and the fourth fastening hole.

[0074] The above description is merely the principle and preferred embodiment of this application. It should be noted that, for those skilled in the art, several other modifications can be made based on the principle of this application, and these modifications should also be considered within the scope of protection of this application.

Claims

1. A motor fixing device, characterized in that, It includes a first fixing plate (10), a second fixing plate (20), a first clamping plate (30), a second clamping plate (40), a drive mechanism (50), and a connecting plate (70) for connecting the motor end cover (60); The first fixing plate (10) and the second fixing plate (20) are spaced apart, and a first opening is formed between the first fixing plate (10) and the second fixing plate (20) for inserting the motor end cover (60); The driving mechanism (50) is connected to the first fixed plate (10), the first clamping plate (30) is slidably connected to the first fixed plate (10), the driving mechanism (50) is connected to the first clamping plate (30), the second clamping plate (40) is fixedly connected to the second fixed plate (20), a second opening is formed between the first clamping plate (30) and the second clamping plate (40), and the second opening is larger than the first opening; The width of the connecting plate (70) is greater than the width of the motor end cover (60). The width of the first opening is greater than the width of the motor end cover (60) but less than the width of the connecting plate (70). The two sides of the connecting plate (70) are clamped in the second opening by the first clamping plate (30) and the second clamping plate (40). The two sides of the end face of the connecting plate (70) abut against the first fixing plate (10) and the second fixing plate (20) respectively.

2. The motor fixing device according to claim 1, characterized in that, The connecting plate (70) is provided with a first engagement slope (701) and a second engagement slope (702) on both sides respectively. The first clamping plate (30) is provided with a third engagement slope (301) that matches the first engagement slope (701). The second clamping plate (40) is provided with a fourth engagement slope (401) that cooperates with the second engagement slope (702). When the connecting plate (70) is clamped, the third engagement slope (301) presses against the first engagement slope (701), and the fourth engagement slope (401) presses against the second engagement slope (702).

3. The motor fixing device according to claim 2, characterized in that, The first jointing inclined surface (701) and the second jointing inclined surface (702) are symmetrically arranged along the centerline of the connecting plate (70); The first joint inclined surface (701) forms an angle greater than 90° with the end face of the first fixing plate (10), and the second joint inclined surface (702) forms an angle greater than 90° with the end face of the second fixing plate (20). When the connecting plate (70) is clamped, the third engagement slope (301) presses against the first engagement slope (701) and the first clamping plate (30) presses the connecting plate (70) tightly against the end face of the first fixing plate (10), the fourth engagement slope (401) presses against the second engagement slope (702) and the second clamping plate (40) presses the connecting plate (70) tightly against the end face of the second fixing plate (20).

4. The motor fixing device according to claim 1, characterized in that, The driving mechanism (50) includes a third fixing plate (501), a clamping plate (502) and a driving screw (503). The clamping plate (502) is spaced apart from the first fixing plate (10). The third fixing plate (501) is fixedly disposed between the first fixing plate (10) and the clamping plate (502). The first clamping plate (30) is slidably disposed between the first fixing plate (10) and the clamping plate (502). The drive screw (503) is threadedly connected to the third fixing plate (501), and one end of the drive screw (503) extends out of the third fixing plate (501) and is connected to the first clamping plate (30).

5. The motor fixing device according to claim 4, characterized in that, The first clamping plate (30) is provided with a connection port, which includes a connecting hole (303) and a bayonet (304). The connecting hole (303) connects the bayonet (304) and the outside of the first clamping plate (30). The diameter of the bayonet (304) is larger than the diameter of the connecting hole (303). The end of the drive screw (503) is provided with a locking block (5031). The drive screw (503) passes through the connecting hole (303), and the locking block (5031) is engaged in the bayonet (304).

6. The motor fixing device according to claim 4, characterized in that, The third fixing plate (501) is provided with a connecting hole (5011) and a mounting port (5012). The mounting port (5012) communicates with the connecting hole (5011). A first nut (5013) is provided in the mounting port (5012). The driving screw (503) passes through the connecting hole (5011) and the mounting port (5012) and is threadedly connected to the first nut (5013).

7. The motor fixing device according to claim 4, characterized in that, One end of the drive screw (503) is connected to the first clamping plate (30), and the other end extends out of the third fixing plate (501) and is connected to the knob (5032).

8. The motor fixing device according to any one of claims 4-7, characterized in that, The first clamping plate (30) is provided with at least one elongated hole (302) arranged along its sliding direction. The first fixing plate (10), the first clamping plate (30) and the clamping plate (502) are connected by a first fixing bolt (305). The first fixing bolt (305) passes through the elongated hole (302) and is respectively connected to the first fixing plate (10) and the clamping plate (502). The first fixing bolt (305) can slide relative to each other along the elongated hole (302).

9. An automatic braking test system, characterized in that, It includes a base plate (80) and a motor fixing device according to any one of claims 1-8, the motor fixing device being connected to the base plate (80).

10. The automatic braking test system according to claim 9, characterized in that, The base plate (80) has a plurality of fixing holes arranged at intervals. The first fixing plate (10) is fixedly connected to the fixing holes on the base plate (80) by a first fixing bolt (305), and the second fixing plate (20) is fixedly connected to the fixing holes on the base plate (80) by a second fixing bolt.

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