Axle connection structure and debugging device for rotational speed sensor

Abstract

The utility model discloses a kind of axle connecting structure and debugging equipment for speed sensor, it is related to sensor testing equipment technical field, the axle connecting structure includes main shaft mechanism, first gear and bayonet, main shaft mechanism has insertion segment, clamping groove and limiting portion, clamping groove is located at the side of insertion segment, limiting portion is located on insertion segment or the side of deviating from clamping groove. First gear has insertion hole matched with insertion segment, moves first gear, makes insertion hole and insertion segment insertion, and abuts with limiting portion, to make first gear and main shaft mechanism coaxial. Bayonet is matched with clamping groove, when bayonet is inserted into clamping groove, and the part end surface of first gear is limited, to lock first gear. When bayonet is removed from clamping groove, move first gear, make insertion hole and insertion segment separate, to remove first gear. Locking or unlocking of first gear can be realized by inserting and pulling bayonet, convenient for its replacement, shorten the preparation time before the debugging of different sensors, reduce cost.

Description

Technical Field

[0001] This utility model belongs to the technical field of sensor testing equipment, specifically a wheel axle connection structure and debugging equipment for a speed sensor. Background Technology

[0002] Rotation speed sensors (also called wheel speed sensors) are commonly used to measure the rotational speed of rotating parts. A typical rotation speed sensor system consists of gears and a sensor. Before leaving the factory, rotation speed sensors undergo extensive testing to ensure their performance meets requirements.

[0003] In related technologies, a gearbox is usually used to debug the sensor. The gearbox contains a rotating gear, and the sensor to be tested is fixed on the gearbox. The sensor is aligned with and close to the circumferential teeth of the rotating gear to measure the rotation speed.

[0004] However, most existing gearboxes used for speed sensor calibration are one-to-one, meaning they can only calibrate sensors of a specific model. Calibrating different sensor models requires replacing gears, making the process cumbersome. Developing a new gearbox would significantly increase costs and is unsuitable for new product development requirements. Utility Model Content

[0005] The purpose of this invention is to provide a wheel-axle connection structure and a debugging device for a speed sensor, so as to solve at least one aspect of the problems and defects mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: In a first aspect, this utility model provides a wheel and axle connection structure, comprising: The spindle mechanism has a connector section, a slot and a limiting part. The slot is located on one side of the connector section, and the limiting part is located on the connector section or on the side opposite to the slot. The first gear has a insertion hole that matches the insertion section. The first gear is moved along the first direction so that the insertion hole is inserted into the insertion section and abuts against the limiting part, so that the first gear is coaxial with the main shaft mechanism. A locking pin, which matches a slot, locks the first gear when it is inserted into the slot and limits a portion of the end face of the first gear. When the locking pin is removed from the slot, the first gear moves in a direction away from the first direction, causing the insertion hole to separate from the insertion section, so as to remove the first gear.

[0007] As a further embodiment of this utility model: the spindle mechanism includes a spindle assembly, a connecting shaft and an elastic element, with the insertion section and the limiting part located on the spindle assembly; The connecting shaft is coaxially mounted at the end of the spindle assembly and moves along the axis of the spindle assembly, with the slot located on the connecting shaft; The elastic element connects the main shaft assembly and the connecting shaft respectively, so as to elastically tighten part of the end face of the first gear through the connecting shaft and the locking pin.

[0008] As a further embodiment of this utility model: the end of the spindle assembly has a connecting hole, which is located within the insertion section; The end of the connecting shaft opposite to the slot has a connecting section, which is inserted into the connecting hole; The elastic element is sleeved outside the connecting section and embedded in the connecting hole. One end of the elastic element is connected to the inner wall of the connecting hole near the connecting shaft, and the other end of the elastic element is connected to the outer wall of the connecting section near the spindle assembly.

[0009] As a further embodiment of this utility model: the spindle assembly includes a spindle and a chuck, with a plug section, a limiting part and a connecting hole located on the chuck, and a portion of the spindle is plugged into the connecting hole on the side opposite to the connecting shaft.

[0010] As a further embodiment of this utility model: one of the chuck and the first gear has at least one positioning pin, and the other has a positioning hole that matches the positioning pin, with the positioning pin and the positioning hole correspondingly connected.

[0011] As a further embodiment of this utility model: the locking pin has a groove, and when the locking pin is inserted into the slot, the inner wall of the slot on the side opposite to the main shaft assembly abuts against the groove.

[0012] As a further embodiment of this utility model: the cross section of the plug segment passing through the axis of the main shaft mechanism is tapered, and the cross section gradually increases along the first direction.

[0013] Secondly, this utility model also provides a debugging device for a speed sensor, including a housing, a rotary drive, a first mounting plate, and a wheel-axle connection structure provided in any one of the first aspects. The main shaft mechanism is rotatably mounted on the housing and is connected to the rotary drive for transmission. The first mounting plate is set on the housing, and the first mounting plate has a first station for placing the speed sensor. The first station is used to detect the circumferential tooth speed of the first gear.

[0014] As a further embodiment of this utility model, it also includes a first driving mechanism, wherein the first mounting plate moves relative to the housing in a second direction; The first drive mechanism is connected to the first mounting plate to adjust the radial distance between the speed sensor and the first gear at the first station. And / or, it also includes a second mounting plate and a second drive mechanism, the second mounting plate having a second station for mounting a speed sensor, the second station for detecting the end face tooth speed of the first gear; The second mounting plate is moved along a third direction and mounted on the first mounting plate. The second drive mechanism is connected to the second mounting plate to adjust the distance between the speed sensor and the end face of the first gear on the second station.

[0015] As a further embodiment of this utility model, it also includes a third mounting plate disposed on the housing, and a plurality of second gears are spaced apart on the main shaft mechanism; The third mounting plate has multiple third stations for mounting speed sensors. Each third station corresponds to a second gear and is used to detect the circumferential tooth speed of the corresponding second gear.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the wheel axle connection structure includes a main shaft mechanism, a first gear, and a locking pin. By providing an insertion section, a slot, and a limiting part on the main shaft mechanism, the slot is located on one side of the insertion section, and the limiting part is located on the insertion section or on the side opposite to the slot. By providing an insertion hole on the first gear that matches the insertion section, the first gear moves along a first direction, causing the insertion hole to engage with the insertion section and abut against the limiting part, so that the first gear is coaxial with the main shaft mechanism, allowing the first gear to be inserted only from one end of the main shaft mechanism. The locking pin matches the slot. When the locking pin is inserted into the slot and limits part of the end face of the first gear, the first gear is locked to enable the adjustment of the speed sensor. When the locking pin is removed from the slot, the first gear is moved in a direction away from the first direction to separate the insertion hole from the insertion section, so that the first gear can be removed and replaced with other types of first gears to enable the adjustment of different types of speed sensors. The locking or unlocking of the first gear can be achieved simply by inserting and removing the locking pin, which facilitates its replacement, shortens the preparation time before adjusting different types of speed sensors, and greatly reduces the cost of new product development. It is simple to operate and easy to use. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 A schematic diagram of the structure of the debugging device for the speed sensor provided by this utility model; Figure 2 for Figure 1 Exploded view in the middle; Figure 3 for Figure 1 A sectional view along section AA; Figure 4 for Figure 3 A magnified view of a section at point B in the middle; Figure 5 A schematic diagram of the structure of the debugging device for the speed sensor provided by this utility model; Figure 6 for Figure 5A schematic diagram of the internal structure after part of the box has been removed; Figure 7 for Figure 6 A sectional view along the CC section; Figure 8 for Figure 6 A schematic diagram showing the connection relationship between the middle housing, the first mounting plate, and the second mounting plate.

[0019] Figure label: 10. Housing; 20. Rotary drive; 30. First mounting plate; 31. First station; 40. First drive mechanism; 50. Second mounting plate; 51. Second station; 60. Second drive mechanism; 70. Third mounting plate; 71. Third station; 100. Spindle mechanism; 101. Insertion section; 102. Slot; 103. Limiting part; 104. Connecting hole; 105. Positioning pin; 106. Second gear; 110. Spindle assembly; 111. Spindle; 112. Chuck; 120. Connecting shaft; 130. Elastic element; 200, First gear; 210, Insertion hole; 220, Positioning hole; 300, locking pin; 310, groove. Detailed Implementation

[0020] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0021] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0023] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] Firstly, please refer to Figure 1-4 As shown, this utility model embodiment provides a wheel and axle connection structure, including a main shaft mechanism 100, a first gear 200, and a locking pin 300.

[0027] The spindle mechanism 100 has a plug section 101, a slot 102 and a limiting part 103. The slot 102 is located on one side of the plug section 101, and the limiting part 103 is located on the plug section 101 or on the side away from the slot 102.

[0028] The first gear 200 has a plug hole 210 that matches the plug section 101. The first gear 200 is moved along the first direction so that the plug hole 210 is plugged into the plug section 101 and abuts against the limiting part 103, so that the first gear 200 is coaxial with the main shaft mechanism 100.

[0029] The locking pin 300 matches the locking slot 102. When the locking pin 300 is inserted into the locking slot 102 and limits a portion of the end face of the first gear 200, it locks the first gear 200. When the locking pin 300 is removed from the locking slot 102, the first gear 200 moves in a direction away from the first direction, causing the insertion hole 210 to separate from the insertion section 101, so that the first gear 200 can be removed.

[0030] In this embodiment, the spindle mechanism 100 is used for debugging the speed sensor. It can be mounted on the housing and provides a mounting base for at least the first gear 200 and the retaining pin 300. The insertion section 101 on the spindle mechanism 100 is used to mount the first gear 200 and ensure that the first gear 200 and the spindle mechanism 100 remain coaxial.

[0031] Additionally, the slot 102 on the spindle mechanism 100 is used to insert the locking pin 300. It can be a through slot opened radially along the spindle mechanism 100, and the slot 102 is located on one side of the insertion section 101. The limiting part 103 on the spindle mechanism 100 can be a conical surface located on the insertion section 101. When the first gear 200 is fitted onto the insertion section 101, the first gear 200 cannot pass through the large end of the conical surface. Alternatively, the limiting part 103 can be a protrusion located on the side opposite to the slot 102. When the first gear 200 is fitted onto the insertion section 101, the protrusion can block and limit the end face of the first gear 200.

[0032] In this embodiment, the teeth on the first gear 200 used for adjusting the sensor can be located on the circumference of the first gear 200, or on the end face of the first gear 200 and close to the outer circle. The first gear 200 is provided with a coaxial insertion hole 210, which matches the insertion section 101.

[0033] In this embodiment, the locking pin 300 matches the locking slot 102, and it can be block-shaped, column-shaped, strip-shaped, etc.

[0034] Specifically, the first gear 200 is moved along the first direction, such as along... Figure 3 With the X-axis pointing in the positive direction, the insertion hole 210 is inserted into the insertion section 101 and abuts against the limiting part 103, restricting the left side of the first gear 200 onto the main shaft mechanism 100. The first gear 200 is coaxial with the main shaft mechanism 100. Then, the locking pin 300 is inserted into the slot 102, and the right end face of the first gear 200 is limited to lock the first gear 200. Next, the speed sensor to be tested can be fixed on the bracket, with its probe aligned with the circumferential teeth or end face teeth of the first gear 200, for speed sensor debugging. If different models of sensors need to be debugged, the locking pin 300 is removed from the slot 102, and the first gear 200 is moved in a direction away from the first direction, such as along... Figure 3 As shown by the reverse orientation of the X-axis, the insertion hole 210 is separated from the insertion section 101 to remove the first gear 200. The corresponding model of the first gear 200 can then be replaced.

[0035] Therefore, the application of the wheel and axle connection structure provided by this utility model embodiment can lock or unlock the first gear 200 simply by inserting and removing the locking pin 300, which facilitates its replacement, shortens the preparation time before debugging different models of speed sensors, greatly reduces the cost of new product development, and is simple to operate and easy to use.

[0036] In some embodiments, the spindle mechanism 100 includes a spindle assembly 110, a connecting shaft 120, and an elastic member 130, with a plug section 101 and a limiting portion 103 located on the spindle assembly 110.

[0037] The connecting shaft 120 is coaxially disposed at the end of the spindle assembly 110 and moves along the axial direction of the spindle assembly 110, and the slot 102 is located on the connecting shaft 120.

[0038] The elastic element 130 connects the main shaft assembly 110 and the connecting shaft 120 respectively, so as to elastically tighten a portion of the end face of the first gear 200 through the connecting shaft 120 and the locking pin 300.

[0039] Specifically, such as Figure 2 , Figure 3 , Figure 4 As shown, the connecting shaft 120 can be connected to the end of the spindle assembly 110 via a plug-in structure, guide structure, etc., so that it can move relative to the spindle assembly 110 along its axis, such as along... Figure 3 The positive or negative direction of the X-axis is shown. The elastic element 130 can be a spring or similar component, connected to the main shaft assembly 110 and the connecting shaft 120 respectively, to apply pressure along the connecting shaft 120. Figure 3 Elastic force in the positive X-axis direction.

[0040] In this way, when the thickness of the first gear 200 of different models is different or there is a deviation, the elastic element 130 can still ensure the stability of the first gear 200 under the elastic tensioning action of the first gear 200 through the connecting shaft 120 and the locking pin 300, thereby avoiding interference with the locking pin 300 due to the different thickness of the first gear 200, and the adaptability is better.

[0041] Furthermore, in this embodiment, the end of the spindle assembly 110 has a connection hole 104, which is located within the insertion section 101.

[0042] The end of the connecting shaft 120 that is away from the slot 102 has a connecting section, which is inserted into the connecting hole 104.

[0043] The elastic element 130 is sleeved outside the connecting section and embedded in the connecting hole 104. One end of the elastic element 130 is connected to the inner wall of the connecting hole 104 near the connecting shaft 120, and the other end of the elastic element 130 is connected to the outer wall of the connecting section near the main shaft assembly 110.

[0044] For example, such as Figure 2 , Figure 3 , Figure 4 As shown, a connecting hole 104 is coaxially formed at the end of the spindle assembly 110, which matches the connecting section on the connecting shaft 120. That is, after the connecting section is inserted into the connecting hole 104, it can move along the axial direction of the spindle assembly 110.

[0045] Among them, the elastic element 130 is a cylindrical spring, which is sleeved on the outer periphery of the connecting section and nested within the connecting hole 104, such as... Figure 4 As shown, the left end of the cylindrical spring can be connected to the end of the connecting section away from the slot 102 by means of welding, snap-fit, screwing, etc., and the right end of the cylindrical spring can be connected to the end of the connecting hole 104 near the slot 102 by means of welding, snap-fit, screwing, etc., so that the connecting shaft 120 can be elastically pressed to the left.

[0046] In addition, to facilitate limiting the movement of the cylindrical spring, such as Figure 4 As shown, a flange can also be provided at the end of the connecting section opposite to the slot 102, and an inner ring can be provided at the end of the connecting hole 104 near the slot 102 for limiting the position. This structure is convenient for processing and installation.

[0047] Furthermore, in this embodiment, the spindle assembly 110 includes a spindle 111 and a chuck 112. The insertion section 101, the limiting part 103 and the connecting hole 104 are located on the chuck 112, and part of the spindle 111 is inserted into the side of the connecting hole 104 opposite to the connecting shaft 120.

[0048] Specifically, such as Figure 4 As shown, the spindle 111 is a smooth shaft with an external thread at one end near the connecting shaft 120, and an internal thread at the end of the connecting hole 104 on the chuck 112 away from the connecting shaft 120. The internal thread and the external thread are matched and connected. This facilitates single-piece machining and assembly.

[0049] Of course, the connection between the spindle 111 and the chuck 112 can also be replaced by other types of connection structures. The specific structure and shape of the spindle 111 and the chuck 112 can be determined according to actual needs. This embodiment does not impose too many restrictions.

[0050] Furthermore, in this embodiment, one of the chuck 112 and the first gear 200 has at least one positioning pin 105, and the other has a positioning hole 220 that matches the positioning pin 105, with the positioning pin 105 correspondingly connected to the positioning hole 220.

[0051] For example, two positioning pins 105 can be provided at intervals on the side of the chuck 112 facing the first gear 200. Correspondingly, two positioning holes 220 are provided on the side of the first gear 200 facing the chuck 112, which facilitates the positioning between the first gear 200 and the chuck 112, and at the same time facilitates the main shaft 111 to transmit torque to the first gear 200 through the chuck 112.

[0052] Of course, the positioning pin 105 can also be set on the first gear 200, and the positioning hole 220 can also be set on the chuck 112. The specific setting position and quantity of the two can be determined according to actual needs, and no restrictions are imposed in this embodiment.

[0053] In some embodiments, the locking pin 300 has a groove 310, and when the locking pin 300 is inserted into the slot 102, the inner wall of the slot 102 on the side opposite to the spindle assembly 110 abuts against the groove 310.

[0054] Specifically, such as Figure 1 , Figure 2 As shown, the locking pin 300 has a groove 310 in the middle of the side facing away from the spindle assembly 110. The groove 310 matches the inner wall of the slot 102 on the side facing away from the spindle assembly 110. In this way, the locking pin 300 is not easy to detach freely from the slot 102, and the connection is more stable.

[0055] In some embodiments, the cross-section of the insertion segment 101 passing through the axis of the spindle mechanism 100 is tapered, and the cross-section gradually increases along the first direction. Correspondingly, the cross-section of the insertion hole 210 is tapered, and gradually increases along the first direction.

[0056] Specifically, such as Figure 4 As shown, when the first gear 200 is fitted onto the insertion section 101, the concentricity of the first gear 200 and the main shaft mechanism 100 is ensured through tapered positioning, reducing installation difficulty and guaranteeing the adjustment accuracy of the sensor. The taper size of the insertion section 101 can be determined according to actual needs, and is not specifically limited in this embodiment.

[0057] Secondly, such as Figures 5 to 8 As shown, this utility model embodiment also provides a debugging device for a speed sensor, including a housing 10, a rotary drive 20, a first mounting plate 30, and a wheel axle connection structure of any of the above embodiments. The main shaft mechanism 100 is rotatably mounted on the housing 10 and is connected to the rotary drive 20 for transmission.

[0058] The first mounting plate 30 is disposed on the housing 10. The first mounting plate 30 has a first station 31 for placing a speed sensor. The first station 31 is used to detect the circumferential tooth speed of the first gear 200.

[0059] Specifically, such as Figure 5As shown, the housing 10 in this embodiment can be a modular structure, providing a mounting base for the rotary drive 20, the first mounting plate 30, and the wheel axle connection structure of any of the above embodiments. The rotary drive 20 can be a servo motor with an adjustable speed of 0-4000 r / min and an accuracy of ±1%. The first mounting plate 30 is used to fix the new speed sensor and has a first station 31, such as a socket. The speed sensor can be inserted into the first station 31 and can be fixed by bolts or by a fastening structure composed of springs, steel balls, and positioning pins to meet the requirements of quick disassembly and assembly. The probe of the speed sensor is aligned with the circumferential teeth of the first gear 200 to measure its circumferential tooth speed.

[0060] Therefore, the speed sensor debugging device provided in this embodiment of the present invention, by configuring a wheel-axle connection structure, can lock or unlock the first gear 200 simply by inserting and removing the locking pin 300, which facilitates its replacement, shortens the preparation time before debugging different models of speed sensors, greatly reduces the cost of new product development, and is simple to operate and convenient to use.

[0061] In some embodiments, a first drive mechanism 40 is also included, wherein the first mounting plate 30 moves relative to the housing 10 in a second direction.

[0062] The first drive mechanism 40 is connected to the first mounting plate 30 to adjust the radial distance between the speed sensor and the first gear 200 on the first station 31.

[0063] And / or, it also includes a second mounting plate 50 and a second drive mechanism 60, the second mounting plate 50 having a second station 51 for mounting a speed sensor, the second station 51 being used to detect the end face tooth speed of the first gear 200.

[0064] The second mounting plate 50 is moved along a third direction and mounted on the first mounting plate 30. The second drive mechanism 60 is connected to the second mounting plate 50 to adjust the distance between the speed sensor on the second station 51 and the end face of the first gear 200.

[0065] In some embodiments, such as Figure 6 As shown, the first mounting plate 30 moves relative to the housing 10 in the second direction, that is, in the vertical direction, as follows: Figure 6 As shown in the Y-axis direction, the first mounting plate 30 can be mounted on the housing 10 via a slide rail structure, guide rail structure, etc. Moreover, the first drive mechanism 40 can be composed of a motor, a lead screw, and a guide rod, which is mounted on the housing 10 and its drive end is connected to the first mounting plate 30 for transmission, so as to drive it to move in the vertical direction, thereby adjusting the radial distance between the speed sensor and the first gear 200 on the first station 31, replacing manual adjustment.

[0066] The first drive mechanism 40 can be composed of a cylinder and a guide rail; however, this embodiment does not impose too many restrictions.

[0067] In other embodiments, such as Figures 6-8 As shown, the second mounting plate 50 is used to fix another type of speed sensor. It has a second station 51, such as a socket, on which the speed sensor can be inserted. It can also be fixed by bolts or by a fastening structure composed of springs, steel balls and positioning pins to meet the requirements of quick disassembly and quick assembly. The probe of the speed sensor is aligned with the end face teeth of the first gear 200 to measure its end face tooth speed.

[0068] Additionally, the second mounting plate 50 can be mounted on the first mounting plate 30 via a slide rail, guide rail, guide rod, or other mechanism, and can move along a third direction, such as... Figure 6 As shown on the X-axis, the second drive mechanism 60 can be fine-tuned using a manual adjustment mechanism. This is only for certain models and does not require a separate electrically controlled drive mechanism. The specific types of the second mounting plate 50 and the second drive mechanism 60 can be determined according to actual needs; this embodiment does not impose specific limitations.

[0069] Furthermore, in this embodiment, a third mounting plate 70 is also provided on the housing 10, and a plurality of second gears 106 are provided at intervals on the main shaft mechanism 100.

[0070] The third mounting plate 70 has multiple third stations 71 for mounting speed sensors. Each third station 71 corresponds to a second gear 106 and is used to detect the circumferential tooth speed of the corresponding second gear 106.

[0071] For example, such as Figures 5-7 As shown, there are three third mounting plates 70, and correspondingly, there are also three second gears 106, which are in one-to-one correspondence. The main unit of the third station 71 is used to debug conventional sensor products. Therefore, the three third stations 71 are in fixed positions, mainly to take into account the debugging of fixed products.

[0072] Of course, the third station 71 on the third mounting plate 70 and the second gear 106 on the spindle mechanism 100 can be set to more or fewer quantities, depending on actual needs. This embodiment does not impose too many restrictions.

[0073] In addition, the third station 71 can also be fixed by bolts or by a fastening structure consisting of springs, steel balls and positioning pins to meet the requirements of quick disassembly and assembly, save the time of fixing the sensor and improve the debugging efficiency.

[0074] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of this utility model.

Claims

1. A wheel-axle connection structure, characterized in that, include: The spindle mechanism (100) has a plug section (101), a slot (102) and a limiting part (103), wherein the slot (102) is located on one side of the plug section (101) and the limiting part (103) is located on the plug section (101) or on the side opposite to the slot (102). The first gear (200) has a plug hole (210) that matches the plug section (101). The first gear (200) is moved along the first direction so that the plug hole (210) is plugged into the plug section (101) and abuts against the limiting part (103) so that the first gear (200) is coaxial with the main shaft mechanism (100). A locking pin (300) is matched with the slot (102). When the locking pin (300) is inserted into the slot (102) and limits a portion of the end face of the first gear (200), the first gear (200) is locked. When the locking pin (300) is removed from the slot (102), the first gear (200) is moved in a direction away from the first direction, so that the insertion hole (210) is separated from the insertion section (101) to remove the first gear (200).

2. The wheel and axle connection structure according to claim 1, characterized in that, The spindle mechanism (100) includes a spindle assembly (110), a connecting shaft (120), and an elastic element (130), wherein the insertion section (101) and the limiting part (103) are located on the spindle assembly (110); The connecting shaft (120) is coaxially disposed at the end of the main shaft assembly (110) and moves along the axial direction of the main shaft assembly (110), and the slot (102) is located on the connecting shaft (120); The elastic element (130) connects the main shaft assembly (110) and the connecting shaft (120) respectively, so as to elastically tighten a portion of the end face of the first gear (200) through the connecting shaft (120) and the locking pin (300).

3. The wheel and axle connection structure according to claim 2, characterized in that, The end of the spindle assembly (110) has a connection hole (104) located within the plug section (101); The connecting shaft (120) has a connecting section at one end opposite to the slot (102), and the connecting section is inserted into the connecting hole (104); The elastic element (130) is sleeved outside the connecting section and embedded in the connecting hole (104). One end of the elastic element (130) is connected to the inner wall of the connecting hole (104) near the connecting shaft (120), and the other end of the elastic element (130) is connected to the outer wall of the connecting section near the main shaft assembly (110).

4. The wheel and axle connection structure according to claim 3, characterized in that, The spindle assembly (110) includes a spindle (111) and a chuck (112). The insertion section (101), the limiting part (103) and the connecting hole (104) are located on the chuck (112). A portion of the spindle (111) is inserted into the connecting hole (104) on the side opposite to the connecting shaft (120).

5. The wheel and axle connection structure according to claim 4, characterized in that, One of the chuck (112) and the first gear (200) has at least one locating pin (105), and the other has a locating hole (220) that matches the locating pin (105), with the locating pin (105) correspondingly connected to the locating hole (220).

6. The wheel-axle connection structure according to claim 2, characterized in that, The locking pin (300) has a groove (310). When the locking pin (300) is inserted into the slot (102), the inner wall of the slot (102) on the side opposite to the spindle assembly (110) abuts against the groove (310).

7. The wheel and axle connection structure according to any one of claims 1 to 6, characterized in that, The cross section of the plug segment (101) passing through the axis of the main shaft mechanism (100) is tapered, and the cross section gradually increases along the first direction.

8. A debugging device for a speed sensor, characterized in that, It includes a housing (10), a rotary drive (20), a first mounting plate (30), and a wheel and axle connection structure as described in any one of claims 1 to 7, wherein the main shaft mechanism (100) is rotatably mounted on the housing (10) and is connected to the rotary drive (20) in a transmission manner; The first mounting plate (30) is disposed on the housing (10), and the first mounting plate (30) has a first station (31) for placing a speed sensor, the first station (31) for detecting the circumferential tooth speed of the first gear (200).

9. The debugging device for a speed sensor according to claim 8, characterized in that, It also includes a first drive mechanism (40), wherein the first mounting plate (30) moves relative to the housing (10) in a second direction; The first drive mechanism (40) is connected to the first mounting plate (30) to adjust the radial distance between the speed sensor and the first gear (200) on the first work station (31); And / or, also includes a second mounting plate (50) and a second drive mechanism (60), the second mounting plate (50) having a second station (51) for mounting the speed sensor, the second station (51) for detecting the end face tooth speed of the first gear (200); The second mounting plate (50) is moved along a third direction and mounted on the first mounting plate (30). The second drive mechanism (60) is connected to the second mounting plate (50) to adjust the distance between the speed sensor on the second station (51) and the end face of the first gear (200).

10. The debugging device for a speed sensor according to claim 9, characterized in that, It also includes a third mounting plate (70) disposed on the housing (10), and a plurality of second gears (106) are disposed at intervals on the main shaft mechanism (100); The third mounting plate (70) has a plurality of third stations (71) for placing the speed sensor. Each third station (71) corresponds to one of the second gears (106) and is used to detect the circumferential tooth speed of the corresponding second gear (106).

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