Detection device for new energy automobile steering gear output shaft

Abstract

The invention discloses a detection device for an output shaft of a new energy automobile steering gear, and relates to the technical field of automobile part testing, the detection device comprises a mounting seat, a detection host is mounted on the mounting seat, and a driving mechanism is mounted in the mounting seat. According to the detection device for the new energy automobile steering gear output shaft, the fixing mechanism drives circumferentially-distributed clamping plates through a second air cylinder, transmission of a second connecting rod and a sliding block is matched, automatic clamping of output shafts with different shaft diameters is achieved, the moving distances of the multiple clamping plates are equal, and it is ensured that the center line of the output shaft coincides with the central axis of a cylinder; the problem of single-side clamping unbalance loading of a traditional clamp is avoided, a zero-deviation reference is provided for torsional rigidity detection, input torque is collected through a torque sensor, the torsion angle of a first rotating shaft is monitored through a first angle encoder, and the deflection angle of an output shaft relative to a clamping plate is detected through a second angle encoder; therefore, the real torsional rigidity of the output shaft can be accurately calculated, and the accuracy of detection data is ensured.

Description

A detection device for the output shaft of the steering gear in new energy vehicles Technical Field

[0001] This invention relates to the field of automotive parts testing technology, specifically a testing device for the output shaft of a steering gear in a new energy vehicle. Background Technology

[0002] The steering output shaft of a new energy vehicle is a core transmission component connecting the steering wheel and the wheel steering knuckle. Its torsional stiffness (the ability to resist torsional deformation) directly affects steering feel, return-to-center accuracy, and driving safety, making it a key component of the mechanical transmission system. Therefore, after the steering output shaft is manufactured, its torsional stiffness needs to be tested. Existing testing devices, such as the transmission shaft torsion resistance test device and method disclosed in CN116124452B, belong to the field of transmission shafts. This device includes a base and a housing. The housing is characterized by being mounted on the upper left end of the base, having a control panel mounted on its side surface, and having a first motor installed inside the housing. The first motor is mounted on the upper surface of the base, and its output shaft is fixedly connected to a first gear. A second gear is meshed with the side surface of the first gear, and the internal center position of the second gear is fixed. A rotating shaft is connected, with one end of the rotating shaft passing through the housing and fixedly connected to a first fixed plate. This allows the first motor to drive the transmission shaft to move. When the transmission shaft moves, the right end will drive the second fixed plate and the first dynamic torque sensor to rotate together. The first dynamic torque sensor will monitor the torque change of the transmission shaft in real time, thus testing the transmission shaft. The existing detection device has the following defects in actual use: 1. Existing devices mostly change the torque by adjusting the motor current or speed, which is slow (adjustment time > 10 seconds) and cannot achieve precise torque adjustment under fixed power, making it difficult to meet the rapid switching detection of output shaft torque requirements of different vehicle models; 2. Existing devices only detect the input torque and the overall torsional angle of the output shaft, and cannot simultaneously monitor the relative deflection between the output shaft and the clamp (such as the angular deviation caused by sliding friction), making it difficult to comprehensively evaluate the torsional stiffness and clamping stability. Summary of the Invention

[0003] The purpose of this invention is to provide a detection device for the output shaft of the steering gear in new energy vehicles, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a detection device for the output shaft of a steering gear in a new energy vehicle, comprising a mounting base, a detection host mounted on the mounting base, a drive mechanism installed inside the mounting base, the drive mechanism realizing torque adjustment, a locking mechanism mounted on the drive mechanism, a second motor fixed on the right side of the mounting base, a threaded rod fixed at the output end of the second motor, the threaded rod being rotatably connected to the mounting base, the threaded rod being connected to a movable plate to drive the movable plate to move left and right, a torque sensor fixed on the movable plate, and a fixing mechanism fixed on both the torque sensor and the drive mechanism, the fixing mechanism being used for fixing and anti-slip of the steering gear output shaft.

[0005] Preferably, the drive mechanism includes a first motor fixed on the mounting base, and a turntable is fixed to the output end of the first motor. A first cylinder is fixed on the turntable. The first cylinder is rotatably connected to one end of the first connecting rod, and the other end of the first connecting rod is rotatably connected to the crossbar. Through the extension and retraction of the first cylinder, combined with the transmission action of the first connecting rod, a basic force can be provided for the movement of the crossbar, thereby providing a basic guarantee for the adjustment of torque.

[0006] Preferably, one end of the crossbar is slidably connected to the turntable, and the other end of the crossbar is fixed with a movable ring, which is slidably connected to the swing arm. The swing arm is fixed at an equal angle to the first rotating shaft, which is bearing-connected to the mounting base. The first rotating shaft is connected to a first angle encoder, which is also fixed to the mounting base. When the crossbar moves, the sliding action between the crossbar and the turntable, and between the movable ring and the swing arm, ensures the stability of the crossbar's movement. Furthermore, by sliding the movable ring on the swing arm, the distance between the movable ring and the swing arm's rotation center can be adjusted, thereby adjusting the lever arm length and consequently, the torque. The torque is proportional to the lever arm length. The first angle encoder detects the rotation angle of the first rotating shaft, providing data support for detecting the torsional stiffness of the steering gear output shaft.

[0007] Preferably, the locking mechanism includes an electromagnet fixed on the turntable, and the electromagnet and the annular iron form a magnetic attraction structure. The annular iron is located outside the first cylinder, and a toothed plate is fixed at an equal angle on the annular iron. The toothed plate and the locking block form a locking connection, and the locking block is fixed on the crossbar. Through the magnetic attraction between the electromagnet and the annular iron, a basic force can be provided for the movement of the annular iron, thereby providing a basic guarantee for the movement of the toothed plate. With the locking action between the toothed plate and the locking block, the position of the crossbar can be locked, thereby realizing the distance between the movable ring and the rotation center of the swing arm, thus ensuring that the lever arm length and torque remain unchanged, and thus ensuring the accuracy of the detection data.

[0008] Preferably, a sliding rod is fixed on the toothed plate, and the sliding rod is slidably connected to the turntable. A first spring is also fixed between the sliding rod and the turntable. When the toothed plate moves, the sliding guide between the sliding rod and the turntable can ensure the stability of the toothed plate's movement. Combined with the elasticity of the first spring, it can provide a force for the automatic reset of the toothed plate.

[0009] Preferably, the movable plate and the fixed rod are slidably connected, and the fixed rod is symmetrically distributed about the center line of the movable plate. The fixed rod is fixed on the mounting base. When the movable plate moves, the sliding guide between the movable plate and the fixed rod can ensure that the movable plate makes stable linear movement.

[0010] Preferably, the fixing mechanism includes a cylinder fixed to the first rotating shaft and the torque sensor, and a second cylinder is fixed inside the cylinder. A round rod is fixed to the output end of the second cylinder, and a movable block is slidably connected to the round rod. A second spring is fixed between the movable block and the output end of the second cylinder. The extension and retraction of the second cylinder can drive the round rod to move, thereby providing a basic force for adjusting the movable block. Furthermore, the sliding action between the movable block and the round rod can provide a basic guarantee for the anti-slip locking of the subsequent steering gear output shaft.

[0011] Preferably, the movable block is rotatably connected to one end of the second connecting rod, and the other end of the second connecting rod is rotatably connected to the slider. The slider and the guide rod are slidably connected, and the guide rod is fixed to the cylinder. A clamping plate is also fixed on the slider, and the clamping surface of the clamping plate is evenly distributed with anti-slip teeth. When the movable block moves, the slider and the clamping plate can move in conjunction with the transmission action of the second connecting rod. The sliding action between the slider and the guide rod can ensure the stability of the clamping plate movement, thereby realizing the position adjustment of the clamping plate to accommodate the fixed position of steering gear output shafts of different diameters.

[0012] Preferably, the cylinder is also connected to a second rotating shaft by a bearing, and one end of the second rotating shaft is fixed to a top plate. The contact surface between the top plate and the steering gear output shaft is evenly distributed with anti-slip teeth. At the same time, the top plate is connected to a second angle encoder, which is fixed on the cylinder. Through the action of the top plate, the steering gear output shaft can be clamped and positioned. Through the action of the second angle encoder, it can detect whether there is slippage between the steering gear output shaft and the clamping plate, thereby ensuring the accuracy of the detection data.

[0013] Preferably, a circular plate is fixed to the other end of the second rotating shaft, and a number of inclined protrusions are evenly distributed on the circular plate. The inclined protrusions are slidably connected to the push rods. At the same time, the push rods are evenly distributed on the movable block. The second rotating shaft rotates, and in conjunction with the sliding action of the inclined protrusions and the push rods, it can provide a basic force for the movement of the movable block. Thus, when sliding occurs between the steering gear output shaft and the clamping plate, it can achieve an auxiliary locking effect on the steering gear output shaft, ensuring the normal progress of the test.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. The detection device for the output shaft of the steering gear of new energy vehicles uses a fixing mechanism that drives circumferentially distributed clamping plates through a second cylinder. This, combined with the transmission of the second connecting rod and the slider, enables automatic clamping of output shafts with different diameters. The multiple clamping plates move equal distances, ensuring that the centerline of the output shaft coincides with the centerline of the cylinder, avoiding the problem of unilateral clamping and uneven load in traditional clamps. This provides a zero-deviation benchmark for torsional stiffness detection. Furthermore, the device uses a torque sensor to collect the input torque, a first angle encoder to monitor the torsion angle of the first rotating shaft, and a second angle encoder to detect the deflection angle of the output shaft relative to the clamping plates. These three components are synchronized to accurately calculate the true torsional stiffness of the output shaft, ensuring the accuracy of the detection data; 2. The detection device for the output shaft of the steering gear of new energy vehicles... The testing device, driven by a first cylinder, adjusts the distance between the rotating center of the movable ring and the swing arm (lever arm length) through the telescopic adjustment of the first cylinder. This achieves linear torque adjustment (torque = force × lever arm) while keeping the first motor power constant. This means that different torque requirements can be met without changing the motor parameters. Compared to traditional motor power adjustment, this effectively improves testing efficiency and meets the needs of rapid switching between multiple vehicle models. 3. This testing device for the output shaft of a new energy vehicle steering gear uses an electromagnet to attract a ring-shaped iron, causing the toothed plate to engage with the locking block on the crossbar, locking the lever arm length and preventing torque drift due to vibration during testing. Simultaneously, the second rotating shaft is linked to the top plate. When the output shaft slides, the inclined protrusion pushes the top rod to trigger the clamping plate for secondary clamping, effectively ensuring the stability of the steering gear output shaft clamping during testing. Attached Figure Description

[0015] Figure 1 is a frontal three-dimensional view of the overall structure of the device of the present invention; Figure 2 is a frontal cross-sectional three-dimensional view of the overall structure of the device of the present invention; Figure 3 is a frontal three-dimensional view of the driving mechanism of the present invention; Figure 4 is a side three-dimensional view of the driving mechanism of the present invention; Figure 5 is a frontal three-dimensional view of the driving mechanism and the locking mechanism of the present invention; Figure 6 is a side cross-sectional three-dimensional view of the fixing mechanism of the present invention; Figure 7 is a frontal cross-sectional three-dimensional view of the fixing mechanism of the present invention.

[0016] In the diagram: 1. Mounting base; 2. Detection host; 3. Drive mechanism; 301. First motor; 302. Turntable; 303. First cylinder; 304. First connecting rod; 305. Crossbar; 306. Movable ring; 307. Swing arm; 308. First rotating shaft; 309. First angle encoder; 4. Locking mechanism; 401. Electromagnet; 402. Ring iron; 403. Gear plate; 404. Slide rod; 405. First spring; 406. Locking block; 5. Second motor; 6. Threaded rod 7. Movable plate; 8. Fixed rod; 9. Torque sensor; 10. Fixing mechanism; 1001. Cylinder; 1002. Second cylinder; 1003. Round rod; 1004. Movable block; 1005. Second spring; 1006. Second connecting rod; 1007. Slider; 1008. Guide rod; 1009. Clamping plate; 1010. Second rotating shaft; 1011. Top plate; 1012. Second angle encoder; 1013. Round plate; 1014. Inclined protrusion; 1015. Top rod. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please refer to Figures 1-7. This invention provides a technical solution: a detection device for the output shaft of a steering gear in a new energy vehicle, including a mounting base 1, a detection host 2 mounted on the mounting base 1, a drive mechanism 3 installed inside the mounting base 1, the torque adjustment function is realized through the drive mechanism 3, a locking mechanism 4 is mounted on the drive mechanism 3, a second motor 5 is fixed on the right side of the mounting base 1, a threaded rod 6 is fixed at the output end of the second motor 5, the threaded rod 6 is rotatably connected to the mounting base 1, the threaded rod 6 is connected to a movable plate 7 to drive the movable plate 7 to move left and right, a torque sensor 9 is fixed on the movable plate 7, and a fixing mechanism 10 is fixed on both the torque sensor 9 and the drive mechanism 3, and the fixing mechanism 10 is used for fixing and anti-slip function of the steering gear output shaft.

[0019] The movable plate 7 and the fixed rod 8 are slidably connected, and the fixed rod 8 is symmetrically distributed about the center line of the movable plate 7, and the fixed rod 8 is fixed to the mounting base 1. When using this detection device for the output shaft of the steering gear of a new energy vehicle, as shown in Figures 1-7, the steering gear output shaft is first installed by placing it between the two fixed mechanisms 10 on the left and right. Then, the second motor 5 is started, which drives the threaded rod 6 to rotate, thereby driving the movable plate 7 to move. With the sliding guide effect between the movable plate 7 and the fixed rod 8, the stability of the movement of the movable plate 7 can be ensured, thereby adjusting the distance between the two fixed mechanisms 10 on the left and right until... The two ends of the steering gear output shaft contact the top plate 1011, thereby achieving left and right clamping and positioning of the steering gear output shaft; the fixing mechanism 10 includes a cylinder 1001 fixed to the first rotating shaft 308 and the torque sensor 9, and a second cylinder 1002 is fixed inside the cylinder 1001, and a round rod 1003 is fixed to the output end of the second cylinder 1002. At the same time, a movable block 1004 is slidably connected to the round rod 1003, and a second spring 1005 is fixed between the movable block 1004 and the output end of the second cylinder 1002; one end of the movable block 1004 is rotatably connected to the second connecting rod 1006, and the other end of the second connecting rod 1006 is rotatably connected to the slider 1007, and The slider 1007 and guide rod 1008 are slidably connected, and the guide rod 1008 is fixed to the cylinder 1001. A clamping plate 1009 is also fixed to the slider 1007, and the clamping surface of the clamping plate 1009 is evenly distributed with anti-slip teeth. After the two ends of the steering gear output shaft contact the top plate 1011, as shown in Figures 1-7, the second cylinder 1002 is controlled to retract, thereby driving the cylindrical rod 1003 and the movable block 1004 to move towards the side of the second cylinder 1002. Combined with the transmission action of the second connecting rod 1006, the slider 1007 and clamping plate 1009 can be moved under force. Combined with the sliding guidance action between the slider 1007 and guide rod 1008, this ensures... The stability of the movement of the clamping plate 1009 is ensured until the clamping surface of the clamping plate 1009 contacts the steering gear output shaft to achieve clamping and fixation. Since the movement distance of multiple clamping plates 1009 is equal, it can be ensured that after the steering gear output shaft is clamped and fixed, the centerline of the steering gear output shaft coincides with the centerline of the cylinder 1001, so as to facilitate subsequent testing. The drive mechanism 3 includes a first motor 301 fixed on the mounting base 1, and a turntable 302 is fixed to the output end of the first motor 301. A first cylinder 303 is fixed on the turntable 302. At the same time, one end of the first cylinder 303 is rotatably connected to the first connecting rod 304, and the other end of the first connecting rod 304 is rotatably connected to the crossbar 305.One end of the crossbar 305 is slidably connected to the turntable 302, and the other end of the crossbar 305 is fixed with a movable ring 306, which is slidably connected to the swing arm 307. The swing arm 307 is fixed at equal angles to the first rotating shaft 308, which is bearing-connected to the mounting base 1. The first rotating shaft 308 is connected to the first angle encoder 309, which is also fixed to the mounting base 1. After the steering gear output shaft is clamped and fixed, as shown in Figures 1-7, starting the first motor 301 can drive the turntable 302 to rotate. The crossbar 305, movable ring 306, and swing arm 307 rotate, thereby applying torque to the first rotating shaft 308. This causes the steering gear output bearing to experience a torque force. Combined with the torque sensor 9, this allows for the detection of the torque force. With the first angle encoder 309, it allows for the detection of the torsional angle of the first rotating shaft 308. By applying a fixed torque, the torsional stiffness of the steering gear output shaft can be detected. During operation, when adjusting the torque force, simply controlling the extension and retraction of the first cylinder 303, along with the transmission action of the first connecting rod 304, allows the crossbar 305 to rotate. The movable ring 306 moves under force, and in conjunction with the sliding guidance between the crossbar 305 and the turntable 302, and the sliding guidance between the movable ring 306 and the swing arm 307, the stability of the crossbar 305's movement can be ensured. Furthermore, when the movable ring 306 slides, the distance from the movable ring 306 to the rotation center of the swing arm 307 can be adjusted, thereby adjusting the length of the lever arm. Thus, while keeping the power of the first motor 301 constant, the torque force on the first rotating shaft 308 can be adjusted by changing the length of the lever arm, thereby adjusting the torque force acting on the steering gear output shaft to meet different requirements. The detection function under the same torque force; the locking mechanism 4 includes an electromagnet 401 fixed on the turntable 302, and the electromagnet 401 and the ring iron 402 form a magnetic attraction structure. The ring iron 402 is located outside the first cylinder 303. At the same time, a toothed plate 403 is fixed at an equal angle on the ring iron 402. The toothed plate 403 and the locking block 406 form a locking connection. The locking block 406 is fixed on the crossbar 305. A sliding rod 404 is fixed on the toothed plate 403. The sliding rod 404 and the turntable 302 are slidably connected. A first spring 405 is also fixed between the sliding rod 404 and the turntable 302.After the lever arm length adjustment is completed, during testing, power is supplied to the first motor 301 and electromagnet 401. The magnetic attraction between electromagnet 401 and ring iron 402 causes ring iron 402 and toothed plate 403 to move under force. Combined with the sliding guide effect between slide rod 404 and turntable 302, the stability of the movement of ring iron 402 and toothed plate 403 is ensured until toothed plate 403 engages with locking block 406, thereby locking the position of crossbar 305 and ultimately locking the movable ring 306 and the lever arm length. To ensure the stability of the output torque force during subsequent testing, thereby guaranteeing the accuracy of the test data; a second rotating shaft 1010 is also connected to the cylinder 1001 by a bearing, and a top plate 1011 is fixed to one end of the second rotating shaft 1010. The contact surface between the top plate 1011 and the steering gear output shaft is evenly distributed with anti-slip teeth. Simultaneously, the top plate 1011 is connected to a second angle encoder 1012, which is fixed to the cylinder 1001; a circular plate 1013 is fixed to the other end of the second rotating shaft 1010, and the circular plate 1013... Several inclined protrusions 1014 are evenly distributed on the 13, and the inclined protrusions 1014 are slidably connected to the push rod 1015. The push rod 1015 is also evenly distributed on the movable block 1004. When testing the torsional stiffness of the steering gear output shaft, when sliding occurs between the steering gear output shaft and the clamping plate 1009, the steering gear output shaft rotates relative to the clamping plate 1009, thereby synchronously driving the top plate 1011 and the second rotating shaft 1010 to rotate under force. Through the action of the second angle encoder 1012, the steering gear output can be detected. The deflection angle of the shaft relative to the clamping plate 1009, and when the second rotating shaft 1010 rotates, simultaneously drive the circular plate 1013 and the inclined protrusion 1014 to rotate. Through the sliding action between the inclined protrusion 1014 and the push rod 1015, the movable block 1004 can be forced to slide towards the second cylinder 1002 side on the circular rod 1003. Based on the above principle, in conjunction with the transmission action of the second connecting rod 1006, the clamping plate 1009 can move again to achieve the secondary clamping and fastening effect of the steering gear output shaft, so that subsequent testing can proceed normally.

[0020] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A detection device for the output shaft of a steering gear in a new energy vehicle, comprising a mounting base (1), characterized in that: The mounting base (1) is equipped with a detection host (2), and the mounting base (1) is equipped with a drive mechanism (3). The torque is adjusted by the drive mechanism (3). The drive mechanism (3) is equipped with a locking mechanism (4). The right side of the mounting base (1) is fixed with a second motor (5). The output end of the second motor (5) is fixed with a threaded rod (6). The threaded rod (6) is rotatably connected to the mounting base (1). The threaded rod (6) is connected to the movable plate (7) to drive the movable plate (7) to move left and right. The movable plate (7) is fixed with a torque sensor (9). The torque sensor (9) and the drive mechanism (3) are both fixed with a fixing mechanism (10). The fixing mechanism (10) is used to fix and prevent slippage of the steering gear output shaft.

2. The detection device for the output shaft of a steering gear in a new energy vehicle according to claim 1, characterized in that: The drive mechanism (3) includes a first motor (301) fixed on the mounting base (1), and a turntable (302) is fixed at the output end of the first motor (301), and a first cylinder (303) is fixed on the turntable (302). Meanwhile, one end of the first cylinder (303) is rotatably connected to one end of the first connecting rod (304), and the other end of the first connecting rod (304) is rotatably connected to the crossbar (305).

3. The detection device for the output shaft of a steering gear in a new energy vehicle according to claim 2, characterized in that: One end of the crossbar (305) is slidably connected to the turntable (302), and the other end of the crossbar (305) is fixed with a movable ring (306). The movable ring (306) is slidably connected to the swing arm (307). The swing arm (307) is fixed at an angle to the first rotating shaft (308). The first rotating shaft (308) is connected to the mounting base (1) by a bearing. The first rotating shaft (308) is connected to the first angle encoder (309), and the first angle encoder (309) is fixed to the mounting base (1).

4. The detection device for the output shaft of a steering gear in a new energy vehicle according to claim 3, characterized in that: The locking mechanism (4) includes an electromagnet (401) fixed on a turntable (302), and the electromagnet (401) and the ring iron (402) form a magnetic attraction structure. The ring iron (402) is located outside the first cylinder (303), and a toothed plate (403) is fixed at an equal angle on the ring iron (402). The toothed plate (403) and the locking block (406) form a locking connection, and the locking block (406) is fixed on the crossbar (305).

5. A detection device for the output shaft of a steering gear in a new energy vehicle according to claim 4, characterized in that: A slide rod (404) is fixed on the toothed plate (403), and the slide rod (404) is slidably connected to the turntable (302). A first spring (405) is also fixed between the slide rod (404) and the turntable (302).

6. The detection device for the output shaft of a steering gear in a new energy vehicle according to claim 1, characterized in that: The movable plate (7) and the fixed rod (8) are slidably connected, and the fixed rod (8) is symmetrically distributed about the center line of the movable plate (7), and the fixed rod (8) is fixed on the mounting base (1).

7. A detection device for the output shaft of a steering gear in a new energy vehicle according to claim 1, characterized in that: The fixing mechanism (10) includes a cylinder (1001) fixed to the first rotating shaft (308) and the torque sensor (9), and a second cylinder (1002) is fixed inside the cylinder (1001). A round rod (1003) is fixed to the output end of the second cylinder (1002), and a movable block (1004) is slidably connected to the round rod (1003). A second spring (1005) is fixed between the movable block (1004) and the output end of the second cylinder (1002).

8. A detection device for the output shaft of a steering gear in a new energy vehicle according to claim 7, characterized in that: The movable block (1004) is rotatably connected to one end of the second connecting rod (1006), and the other end of the second connecting rod (1006) is rotatably connected to the slider (1007). The slider (1007) is slidably connected to the guide rod (1008), and the guide rod (1008) is fixed on the cylinder (1001). A clamping plate (1009) is also fixed on the slider (1007), and the clamping surface of the clamping plate (1009) is evenly distributed with anti-slip teeth.

9. A detection device for the output shaft of a steering gear in a new energy vehicle according to claim 8, characterized in that: The cylinder (1001) is also connected to a second rotating shaft (1010) by a bearing, and a top plate (1011) is fixed to one end of the second rotating shaft (1010). The contact surface between the top plate (1011) and the steering gear output shaft is evenly distributed with anti-slip teeth. At the same time, the top plate (1011) is connected to a second angle encoder (1012), and the second angle encoder (1012) is fixed on the cylinder (1001).

10. A detection device for the output shaft of a steering gear in a new energy vehicle according to claim 9, characterized in that: The other end of the second rotating shaft (1010) is fixed with a circular plate (1013), and a number of inclined protrusions (1014) are evenly distributed on the circular plate (1013). The inclined protrusions (1014) and the push rod (1015) are slidably connected, and the push rod (1015) is evenly distributed on the movable block (1004).

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