Hall type rotating speed sensor test bench

Abstract

The invention discloses a Hall type rotating speed sensor test bench which comprises a test bench body used for detecting a Hall type rotating speed sensor, a protective cover is arranged at the top end of the test bench body, a sealing piece is arranged on one side of the protective cover, an adjusting piece is arranged at the top end of the test bench body, and a transmission gear set and a conveying belt are arranged between the adjusting piece and the sealing piece. The bottom end of the test bench main body is provided with a test assembly. The three detachable signal gears with different sizes, tooth pitches and tooth numbers are arranged, parameters are preset through the PLC, the adjusting block moves to the position corresponding to the pressure sensor, the lifting piece is triggered to drive the target signal gear to ascend, the detection requirements of Hall type rotating speed sensors with different tooth pitches and tooth numbers can be met without overall replacement of the plate body, and the detection efficiency is improved. The problems that a traditional test bench is poor in adaptability and tedious in operation are solved.

Description

TECHNICAL FIELD

[0001] The application relates to a test bench device, in particular to a Hall type rotating speed sensor test bench. BACKGROUND

[0002] The Hall type rotating speed sensor is a magneto-electric sensor based on the Hall effect and is widely applied in many fields, for example, rotating speed detection of a crankshaft and a camshaft of an automobile engine and rotating speed monitoring of a motor of an industrial device. In the production and manufacturing process, the Hall type rotating speed sensor needs to be placed on a test bench for comprehensive and accurate testing to ensure product quality and performance.

[0003] According to the search, a signal detection device of a Hall rotating speed sensor is disclosed in Chinese Patent No. CN113252931A. In use, the sensor body is fixed on a mounting rack, and then the sensor body is electrically connected with a power supply device and an oscilloscope. After the sensor body is powered on, the Hall element of the sensor body moves above the signal tooth and outputs a signal by moving the mounting rack, and then the corresponding waveform is displayed on the display screen of the oscilloscope. Therefore, the signal detection device provided in the application can detect whether the Hall rotating speed sensor is normally connected or not, and can also detect whether the function of the Hall rotating speed sensor is normal, and has high detection efficiency, low detection cost and good economy. However, in the above-mentioned patent product, the signal tooth and the base are a fixed structure or need to be replaced as a whole, and it is difficult to quickly adapt to the sensor detection requirements of different tooth pitch and tooth number, and the operation is complicated. SUMMARY

[0004] The purpose of the application is to provide a Hall type rotating speed sensor test bench to solve the above problems.

[0005] The application achieves the above-mentioned purpose through the following technical scheme. A Hall type rotating speed sensor test bench comprises a test bench body for detecting a Hall type rotating speed sensor, a protective cover is arranged at the top end of the test bench body, a sealing element is arranged at one side of the protective cover, an adjusting element is arranged at the top end of the test bench body, a transmission gear set and a conveying belt are arranged between the adjusting element and the sealing element, and a test assembly is arranged at the bottom end of the test bench body.

[0006] The adjusting element is composed of an adjusting block, an adjusting groove and an electric control clamp. The adjusting groove is arranged at the top end of the test bench body. The adjusting block is provided with a gear plate at the bottom end. The side of the adjusting block close to the sealing element is provided with an electric control clamp.

[0007] The test assembly includes a lifting piece and a trigger, the lifting piece includes a telescopic cylinder and a detachable signal gear, one side of the bottom end of the adjusting block is provided with a protruding block, the inside of the bottom end of the test bench body is provided with a pressure sensor, when the protruding block moves to the position of the pressure sensor with the adjusting block, the trigger triggers the lifting piece to lift, the lifting piece drives the detachable signal gear to rise to the position of the electric control clamp;

[0008] The sealing piece is mainly composed of a through hole, an opening door and a first lead screw, one side of the protective cover is provided with a through hole, the inside of the through hole is provided with an opening door, the bottom end of the opening door is provided with a first lead screw, one end of the first lead screw is provided with a first gear;

[0009] The transmission gear set is composed of a first rotating gear set and a second rotating gear set, a transmission belt is arranged between the second rotating gear set and the first gear;

[0010] When the adjusting block moves to the position of the through hole, the gear plate drives the first rotating gear set to rotate forward, the transmission gear set, the transmission belt and the first lead screw rotate forward, the opening door opens, when the adjusting block moves to the reverse position of the through hole, the gear plate drives the first rotating gear set to rotate reversely, the transmission gear set, the transmission belt and the first lead screw rotate reversely, and the opening door resets and closes.

[0011] Preferably, the bottom end of the test bench body is provided with a placing box, three telescopic cylinders are horizontally and equidistantly arranged in the inside of the placing box, the execution end of the telescopic cylinder is provided with a lifting fixing ring, one side of the lifting fixing ring is fixedly connected with a rotating motor, the execution end of the rotating motor is provided with a rotating rod, and the rotating rod is provided with a detachable signal gear.

[0012] Preferably, the sizes, tooth pitches and tooth numbers of the three detachable signal gears are inconsistent.

[0013] Preferably, the first rotating gear set and the second rotating gear set are both composed of two gears with one large and one small, and the large gear of the second rotating gear set is engaged with the small gear of the first rotating gear set.

[0014] Preferably, the top end of the moving block is provided with a forward and reverse motor, the execution end of the forward and reverse motor is provided with a vertical plate, one side of the vertical plate is provided with a lifting block, and the electric control clamp is arranged on one side of the lifting block.

[0015] Preferably, the two sides of the electric control clamp are arc-shaped, the two sides of the electric control clamp are both provided with an adjusting screw, and a resisting block is arranged at the end position of the adjusting screw in the electric control clamp.

[0016] Preferably, the top end of the test bench body is provided with a sliding groove, and the sliding groove is provided with a notch away from one side of the adjusting groove, and the notch penetrates through the top end of the test bench body.

[0017] Preferably, the notch is located directly above the detachable signal gear, and a pressure sensor is arranged inside the sliding groove and close to the position of the detachable signal gear.

[0018] Preferably, the rotating rod is provided with a threaded rod at an end away from the rotating motor, and the threaded rod is provided with a limiting block in a threaded connection manner.

[0019] The present application has the following beneficial effects:

[0020] 1. Three detachable signal gears with inconsistent size, pitch and number of teeth are arranged in the test assembly, and the adjusting block is moved to the position of the corresponding pressure sensor through the preset parameters of the PLC controller, so that the lifting member drives the target signal gear to rise, without the need of replacing the whole plate body, the detection requirements of the Hall type rotating speed sensor with different pitch and number of teeth can be adapted, and the problems of poor adaptability and complicated operation of the traditional test bench are solved.

[0021] 2. The electric control clamp is designed in an arc shape on both sides and is provided with adjusting screws and abutting blocks, so that the sensor body with different sizes can be manually adjusted and fixed, and the universality of the equipment is further improved.

[0022] 3. During the movement of the adjusting block, the first lead screw is synchronously driven to rotate through the linkage of the gear plate and the transmission gear set, so that the automatic opening and reset closing of the door are realized, manual opening and closing of the door are not needed, and the operation process is simplified.

[0023] 4. The transmission gear set is composed of two rotating gear sets, and the precise synchronization of the movement of the adjusting block and the opening and closing actions of the door is ensured through gear meshing and transmission belt transmission, the mechanical transmission is stable and reliable, and the risk of signal delay or failure is reduced.

[0024] 5. The detachable signal gear is fixed through the threaded rod and the limiting block on the rotating rod, the signal gear can be quickly replaced by rotating out the limiting block, and the maintenance is convenient.

[0025] 6. The test bench is provided with a protective cover at the top end and a transparent tempered glass sliding door on the side, so that the internal detection condition can be observed, the detection area can be isolated, foreign matter interference or accidents can be avoided, and the safety of the operator is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Fig. 1 is a perspective view of the overall structure of the Hall type rotating speed sensor test bench according to the present application;

[0027] Figure 2A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0028] Figure 3 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0029] Figure 4 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0030] Figure 5 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0031] Figure 6 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0032] Figure 7 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0033] Figure 8 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application; Figure 2 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0034] Figure 9 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application; Figure 4 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application;

[0035] Figure 10 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application; Figure 7 A structural schematic diagram of a Hall type rotating speed sensor test bench is provided in the present application.

[0036] In the figure: 1, test bench main body; 2, protective cover; 3, opening door; 301, through hole; 302, moving block; 303, first screw rod; 304, first gear; 305, conveying belt; 4, first rotating gear set; 401, second rotating gear set; 5, large gear; 501, small gear; 6, driving motor; 601, second screw rod; 602, adjusting block; 603, forward and reverse motor; 604, vertical plate; 605, execution motor; 606, third screw rod; 607, moving groove; 608, adjusting groove; 609, lifting block; 610, gear plate; 7, electric control telescopic rod; 701, telescopic block; 702, electric control clamp; 8, adjusting screw rod; 801, abutting block; 9, test assembly; 901, telescopic cylinder; 902, lifting fixed ring; 903, rotating motor; 904, rotating rod; 905, detachable signal gear; 906, threaded rod; 907, limiting block; 908, sliding groove; 909, protruding block; 910, spherical contact block; 911, pressure sensor; 912, notch; 10, placing box; 1001, opening cover; 1002, bolt; 1003, fixed insertion ring. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0038] Embodiment one:

[0039] With reference to Figure 1-10 A Hall type rotating speed sensor test bench, comprising a test bench body 1 for detecting a Hall type rotating speed sensor, a protective cover 2 is arranged at the top end of the test bench body 1, a sealing element is arranged at one side of the protective cover 2, an adjusting element is arranged at the top end of the test bench body 1, a transmission gear set and a conveying belt 305 are arranged between the adjusting element and the sealing element, and a test assembly 9 is arranged at the bottom end of the test bench body 1.

[0040] The adjusting element is composed of an adjusting block 602, an adjusting groove 608 and an electric control clamp 702, the adjusting groove 608 is arranged at the top end of the test bench body 1, a gear plate 610 is arranged at the bottom end of the adjusting block 602, and the electric control clamp 702 is arranged at the side of the adjusting block 602 close to the sealing element.

[0041] The test assembly 9 comprises a lifting element and a triggering element, the lifting element comprises a telescopic cylinder 901 and a detachable signal gear 905, a protruding block 909 is arranged at one side of the bottom end of the adjusting block 602, a pressure sensor 911 is arranged inside the bottom end of the test bench body 1, when the protruding block 909 moves to the position of the pressure sensor 911 along with the adjusting block 602, the triggering element triggers the lifting element to lift, and the lifting element drives the detachable signal gear 905 to rise to the position of the electric control clamp 702.

[0042] The bottom end of the test bench body 1 is provided with a placing box 10, three telescopic cylinders 901 are horizontally and equidistantly arranged inside the placing box 10, a lifting fixing ring 902 is arranged at the executing end of the telescopic cylinder 901, a rotating motor 903 is fixedly connected to one side of the lifting fixing ring 902, a rotating rod 904 is arranged at the executing end of the rotating motor 903, a detachable signal gear 905 is arranged on the rotating rod 904, and the size, the pitch and the number of teeth of the three detachable signal gears 905 are inconsistent.

[0043] The top end of the test bench body 1 is provided with a sliding groove 908, a slot 912 is arranged at the side of the sliding groove 908 away from the adjusting groove 608, the slot 912 penetrates through the top end of the test bench body 1, the slot 912 is located directly above the detachable signal gear 905, a pressure sensor 911 is arranged inside the sliding groove 908 close to the position of the detachable signal gear 905, the width of the protruding block 909 is consistent with the groove width of the sliding groove 908, a threaded rod 906 is arranged at the end of the rotating rod 904 away from the rotating motor 903, a limiting block 907 is arranged at the threaded rod 906, and the limiting block 907 is threadedly connected with the threaded rod 906.

[0044] In the present embodiment, it should be noted that the driving motor 6, the forward and reverse motor 603, the execution motor 605, the electric control telescopic rod 7, the electric control clamp 702, the telescopic cylinder 901, the rotating motor 903, the pressure sensor 911 and the control panel are all electrically connected with the PLC controller of model "S7-1200".

[0045] When the Hall type rotating speed sensor is detected, the test bench body 1 is moved to the designated position in the workshop, the power is turned on, the top end of the test bench body 1 is provided with a protective cover 2, the side surface of the protective cover 2 is arranged in a trapezoidal shape, one side surface is provided with a sliding door, and the material of the sliding door is transparent tempered glass, so that the operator can observe the internal detection condition through the tempered glass.

[0046] The test bench body 1 is provided with a slot 912 near the sliding door, when the electric control clamp 702 clamps the Hall type rotating speed sensor body and the adjusting block 602 moves in the adjusting slot 608 to the inside of the test bench body 1, the convex block 909 will move in the sliding slot 908 at this time, and the top end of each detachable signal gear 905 is provided with a pressure sensor 911.

[0047] The test bench body 1 is provided with a control panel away from the opening door 3, the operator can touch screen on the operation panel, set the Hall type rotating speed sensor with different pitch and tooth number, move the Hall type rotating speed sensor to be detected to the position of the detachable signal gear 905 to be detected, the bottom end of the convex block 909 is provided with a spherical contact block 910, when the spherical contact block 910 on the convex block 909 contacts and continuously presses the pressure sensor 911 corresponding to the detachable signal gear 905 to be detected, the telescopic cylinder 901 and the rotating motor 903 at the position of the detachable signal gear 905 are triggered, and the telescopic cylinder 901 drives the lifting fixed ring 902 and the rotating motor 903 to rise.

[0048] As shown in Figure 10 When the telescopic cylinder 901 drives the lifting fixed ring 902 and the rotating motor 903 to rise, the top end of the detachable signal gear 905 is exposed at the top end of the test bench body 1 through the slot 912 at this time, the top end of the detachable signal gear 905 is opposite to the bottom end of the Hall type rotating speed sensor clamped by the electric control clamp 702, the rotating motor 903 is started, drives the rotating rod 904 and the detachable signal gear 905 to rotate, the detachable signal gear 905 is a missing tooth signal gear, when the detachable signal gear 905 rotates, the Hall type rotating speed sensor outputs a pulse signal by sensing the periodic change of "tooth blocking magnetic field (low level)-tooth gap passing magnetic field (high level)", and detects.

[0049] According to the detection requirements of sensors with different tooth pitches and numbers of teeth, the adjustment block 602 is moved to the corresponding position of the detachable signal gear 905 through the control panel. At the same time, the detachable signal gear 905 can be replaced according to different detection sensors.

[0050] like Figure 6 As shown, rotate the limit block 907 and unscrew it out of the threaded rod 906 to release the limit on the detachable signal gear 905. Pull out the detachable signal gear 905 and replace it. After replacement, screw the limit block 907 in again to limit the detachable signal gear 905.

[0051] Example 2:

[0052] The difference from the first embodiment is that, referring to Figure 1-2 、 Figure 4-5 as well as Figure 7-9 This embodiment further has the following contents: the sealing member mainly consists of a through hole 301, an opening door 3 and a first screw rod 303. A through hole 301 is provided on one side of the protective cover 2, an opening door 3 is provided inside the through hole 301, a first screw rod 303 is provided at the bottom end of the opening door 3, and a first gear 304 is provided at one end of the first screw rod 303;

[0053] The transmission gear set consists of a first rotating gear set 4 and a second rotating gear set 401. A transmission belt 305 is provided between the second rotating gear set 401 and the first gear 304.

[0054] When the adjustment block 602 moves toward the position of the through hole 301, the gear plate 610 drives the first rotating gear set 4 to rotate forward, the transmission gear set, the conveyor belt 305 and the first screw rod 303 rotate forward, and the door 3 is opened. When the adjustment block 602 moves to the reverse position of the through hole 301, the gear plate 610 drives the first rotating gear set 4 to rotate reversely, the transmission gear set, the conveyor belt 305 and the first screw rod 303 rotate reversely, and the door 3 is opened and reset to close.

[0055] The first rotating gear set 4 and the second rotating gear set 401 are both composed of two gears, one large and one small. The large gear 5 of the second rotating gear set 401 is meshed with the small gear 501 of the first rotating gear set 4 .

[0056] In this embodiment, it should be noted that the first rotating gear set 4 and the second rotating gear 401 are arranged inside the detection stand body 1 near the open door 3 , and a movable groove 306 is provided at the large gear position of the first rotating gear set 4 .

[0057] like Figure 9 As shown, a gear plate 610 is provided at the bottom end of the adjustment block 602 . The bottom end of the gear plate 610 is serrated, and the gear plate 610 moves in the movable slot 306 .

[0058] By default, the opening door 3 is closed, when the adjusting block 602 moves to the opening door 3 position, the gear plate 610 approaches the large gear 5 of the first rotating gear set 4, with the gradual movement of the adjusting block 602, the gear plate 610 meshes with the large gear 5 of the first rotating gear set 4 and drives the first rotating gear set 4 to rotate, at this time, the second rotating gear set 401 meshes with the small gear 501 of the first rotating gear set 4, and the small gear 5 of the second rotating gear set 401 rotates synchronously, driving the transmission belt 305 outside the small gear 5 of the second rotating gear set 401 to rotate, at this time, the first gear 304 rotates, the first lead screw 303 rotates forward, and the bottom end of the opening door 3 connected with the first lead screw 303 is provided with a moving block 302 connected with the first lead screw 303.

[0059] One side of the through hole 301 is provided with a groove located inside the protective cover 2, when the first lead screw 303 rotates forward, the moving block 302 and the opening door 3 move to the groove inside the through hole 301, until the opening door 3 is accommodated in the groove, and the through hole 301 is in an open state.

[0060] With the movement of the adjusting block 602, until the electric control clamp 702 is moved to the position of the through hole 301, it is convenient for the operator to clamp the Hall type rotating speed sensor to be detected in the electric control clamp 702, according to the size of the Hall type rotating speed sensor to be detected, the adjusting screw 8 on both sides of the electric control clamp 702 can be manually adjusted, so that the Hall type rotating speed sensor to be detected is fixed more stably.

[0061] When the Hall type rotating speed sensor to be detected is fixed, the adjusting block 602 moves to the inside of the protective cover 2, the gear plate 610 reversely meshes with the first rotating gear set 4, and then drives the second rotating gear set 401, the transmission belt 305 and the first lead screw 303 to rotate reversely, the opening door 3 resets, seals the position of the through hole 301, and ensures that the environment for detecting the Hall type rotating speed sensor is in a sealed state.

[0062] Embodiment three:

[0063] Referring to Figure 1-3 , Figure 7-9 Compared with the first embodiment and the second embodiment, in this embodiment, the top end of the moving block is provided with a forward and reverse motor 603, the execution end of the forward and reverse motor 603 is provided with a vertical plate 604, one side of the vertical plate 604 is provided with a lifting block 609, and the electric control clamp 702 is arranged on one side of the lifting block 609.

[0064] The two sides of the electric control clamp 702 are arranged in an arc shape, the electric control clamp 702 is provided with an adjusting screw 8 on both sides, and the end position of the adjusting screw 8 located in the electric control clamp 702 is provided with a block 801.

[0065] In this embodiment, it should be noted that: a second screw rod 601 is provided inside the adjustment slot 608 at the top of the detection stand body 1, a drive motor 6 is provided at one end of the second screw rod 601, and the adjustment block 602 is connected to the nut of the second screw rod 601. When the drive motor 6 is started, it drives the second screw rod 601 to rotate, thereby causing the adjustment block 602 to move laterally for adjustment.

[0066] A forward and reverse motor 603 is provided at the top of the adjustment block 602. The forward and reverse motor 603 rotates to drive the vertical plate 604 to rotate. A moving slot 607 is provided on the vertical plate 604. A third screw rod 606 is provided inside the moving slot 607. An executive motor 605 is provided at the top of the third screw rod 606. The lifting block 609 is connected to the nut of the third screw rod 606. When the executive motor 605 is started to drive the third screw rod 606 to rotate, the lifting block 609 moves up and down on the vertical plate 604. An electric-controlled telescopic rod 7 is provided on the side of the lifting block 609 away from the third screw rod 606. The executive end of the electric-controlled telescopic rod 7 is provided with a telescopic block 701. The electric-controlled clamp 702 is arranged on the telescopic block 701. When the electric-controlled telescopic rod 7 is started, it can drive the electric-controlled clamp 702 to move back and forth for adjustment.

[0067] like Figure 8-10 As shown, a power socket is provided at the top of the lifting block 609, and a power block is provided inside the lifting block 609. When the electric control fixture 702 clamps the Hall-type speed sensor, the power cord of the Hall-type speed sensor can be passed through the power socket to facilitate subsequent speed testing.

[0068] After the Hall-type speed sensor is placed in the electric-controlled fixture 702 at the position of opening the door 3, when the Hall-type speed sensor moves to the inside of the protective cover 2, the forward and reverse motors 603 rotate to rotate the electric-controlled fixture to the direction close to the detachable signal gear 905. According to the radius size of the detachable signal gear 905, the position of the electric-controlled fixture 702 can be adjusted by the driving motor 6, the height of the electric-controlled fixture 702 can be adjusted by the execution motor 605, and the front and rear distance of the electric-controlled fixture 702 can be adjusted by the electric-controlled telescopic rod 7 to align it with the top of the detachable signal gear 905 for easy detection.

[0069] like Figure 3 As shown, a rotating rod is provided at the bottom end of the placement box 10, and the rotating rod is connected to an opening cover 1001. The opening cover 1001 is opened and closed by rotating the rotating rod. Latch pins 1002 are provided on both sides of the placement box 10, and fixed insert rings 1003 are provided on both sides of the opening cover 1001. When the detachable signal gear 905 is inspected or replaced, the fixed insert ring 1003 is moved out of the latch 1002 to release the fixation of the opening door 1001, and the opening door 1001 can be opened. Similarly, after closing the opening door 1001, the ring mouth on the fixed insert ring 1003 is aligned with the latch 1002 and snapped in to fix the opening door 1001. At this time, the placement box 10 protects the internal test component 9.

Claims

1. A Hall-type speed sensor test bench, comprising a test bench body for detecting a Hall-type speed sensor, characterized in that: A protective cover is provided at the top of the test bench body, a sealing member is provided on one side of the protective cover, an adjusting member is provided at the top of the test bench body, a transmission gear set and a conveyor belt are provided between the adjusting member and the sealing member, and a test assembly is provided at the bottom of the test bench body; The adjusting member is composed of an adjusting block, an adjusting slot and an electric control fixture. The adjusting slot is provided at the top of the test bench body. A gear plate is provided at the bottom of the adjusting block. The electric control fixture is provided on the side of the adjusting block close to the sealing member. The test assembly includes a lifting member and a trigger member, the lifting member includes a telescopic cylinder and a detachable signal gear, a protrusion is provided on one side of the bottom end of the adjustment block, and a pressure sensor is provided inside the bottom end of the test bench body. When the protrusion moves with the adjustment block to the position of the pressure sensor, the trigger member triggers the lifting member to move up and down, and the lifting member drives the detachable signal gear to rise to the position of the electric control fixture; The sealing member is mainly composed of a through hole, an opening door and a first screw rod. A through hole is provided on one side of the protective cover, an opening door is provided inside the through hole, a first screw rod is provided at the bottom end of the opening door, and a first gear is provided at one end of the first screw rod. The transmission gear set is composed of a first rotating gear set and a second rotating gear set, and a transmission belt is provided between the second rotating gear set and the first gear; When the adjusting block moves toward the position of the through hole, the gear plate drives the first rotating gear set to rotate forward, the transmission gear set, the conveyor belt and the first screw rod rotate forward, and the open door opens. When the adjusting block moves to the reverse position of the through hole, the gear plate drives the first rotating gear set to rotate reversely, the transmission gear set, the conveyor belt and the first screw rod rotate reversely, and the open door resets and closes.

2. A Hall-type speed sensor test bench according to claim 1, characterized in that: A placement box is provided at the bottom end of the test bench body, and three telescopic cylinders are horizontally and equidistantly provided inside the placement box. The execution end of the telescopic cylinder is provided with a lifting fixed ring, and a rotating motor is fixedly connected to one side of the lifting fixed ring. The execution end of the rotating motor is provided with a rotating rod, and the rotating rod is provided with a detachable signal gear.

3. A Hall-type speed sensor test bench according to claim 2, characterized in that: The three detachable signal gears are different in size, tooth pitch and number of teeth.

4. The Hall-type speed sensor test bench according to claim 1, characterized in that: The first rotating gear set and the second rotating gear set are both composed of two gears, one large and one small. The large gear of the second rotating gear set is meshed with the small gear of the first rotating gear set.

5. The Hall-type speed sensor test bench according to claim 1, characterized in that: A forward and reverse motor is provided at the top of the moving block, a vertical plate is provided at the execution end of the forward and reverse motor, a lifting block is provided on one side of the vertical plate, and the electric control clamp is arranged on one side of the lifting block.

6. The Hall-type speed sensor test bench according to claim 5, characterized in that: Both sides of the electric control clamp are arranged in an arc shape. Adjustment screws are provided on both sides of the electric control clamp. Abutment blocks are provided at the ends of the adjustment screws located inside the electric control clamp.

7. The Hall-type speed sensor test bench according to claim 1, characterized in that: A sliding groove is provided at the top of the test bench body, and a notch is provided on a side of the sliding groove away from the adjustment groove, and the notch passes through the top of the test bench body.

8. The Hall-type speed sensor test bench according to claim 7, characterized in that: The notch is located just above the detachable signal gear, a pressure sensor is provided inside the sliding groove near the position of the detachable signal gear, and the width of the protruding block is consistent with the groove width of the sliding groove.

9. The Hall-type speed sensor test bench according to claim 2, characterized in that: A threaded rod is provided at one end of the rotating rod away from the rotating motor. The threaded rod is equipped with a limit block, which is threadedly connected to the threaded rod.

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