A heavy-duty double-bridge vehicle hub test centering device and use method

Abstract

The present application relates to a heavy-duty double-bridge vehicle hub test centering device and a method of use, wherein the heavy-duty double-bridge vehicle hub test centering device includes an axle clamp, a connecting cross bar and a level; the axle clamp includes two separate parts that can be clamped on two axles of the test vehicle respectively, the connecting cross bar is connected between the axle clamps, and the level is installed on the connecting cross bar. The present invention is conducive to guiding the double-bridge vehicle to travel on the hub roller, so that the two tires of the vehicle can be accurately centered with the hub roller, so that the hub roller is located in the middle of the two tires, avoiding the deviation of the vehicle test results due to the misaligned double-bridge vehicle being in a climbing or descending state when testing on the hub roller, and ensuring the accuracy of the test results.

Description

Technical Field

[0001] The present application relates to the field of vehicle detection technology, and in particular to a heavy-duty double-axle vehicle hub test centering device and a method of use. Background Art

[0002] At present, the exhaust emission problem of heavy-duty diesel vehicles has gradually become a focus of mobile sources. According to the requirements of "Emission Limits and Measurement Methods of Pollutants for Heavy-Duty Diesel Vehicles (China Phase VI)" GB 17691-2018 and "Fuel Consumption Limits for Heavy-Duty Commercial Vehicles" GB 30510-2018, when measuring exhaust pollutants and fuel consumption of heavy-duty diesel vehicles, the vehicle under test must be fixed on the chassis dynamometer hub drum according to the chassis dynamometer method, and the hub drum must be used to simulate the actual road resistance for testing.

[0003] Among them, before the test of heavy-duty diesel double-axle vehicles, observers guide the driver around the vehicle, drive the vehicle onto the hub roller of the chassis dynamometer, and keep the two tires of the vehicle in a centering relationship with the hub roller, so that the hub roller is located in the center of the two tires.

[0004] Due to visual deviations in human observation, when guiding the driver to drive the vehicle onto the hub roller, the two tires on the vehicle cannot be accurately aligned with the hub roller, and it is difficult to achieve the corresponding position relationship of the hub roller in the center of the two tires. Summary of the invention

[0005] The purpose of the present application is to provide a heavy-duty double-axle vehicle hub test centering device and use method, which is beneficial to guide the double-axle vehicle to travel on the hub roller so that the two tires of the vehicle can be accurately centered with the hub roller, so that the hub roller is located in the middle of the two tires, and avoid the misaligned double-axle vehicle being in a climbing or descending condition when testing on the hub roller, resulting in deviations in the vehicle test results.

[0006] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a heavy-duty double-bridge vehicle hub test centering device, comprising an axle clamp, a connecting cross bar and a level;

[0007] The axle clamps include two separately arranged ones, and can be respectively clamped on two axles of the test vehicle, the connecting cross bar is connected between the axle clamps, and the level is installed on the connecting cross bar;

[0008] The axle clamp comprises clamp plates which are overlapped and arranged in parallel, the clamp plates comprise a clamp installation plate and a limit rotation plate, the clamp installation plate and the limit rotation plate can be coaxially installed at the axial center of the axle, the clamp installation plate is provided with a plurality of clamp claws which pass over the limit rotation plate and are perpendicular to the disk surfaces of the two clamp plates, the plurality of clamp claws can be clamped on the side wall of the wheel rim of the axle and can rotate with the axle;

[0009] A connecting shaft is connected between the limit follower turntable and the fixture installation plate, the root of the connecting shaft is fixedly connected to the axis of the limit follower turntable, and a fixture bearing is arranged between the fixture installation plate and the connecting shaft;

[0010] The connecting cross bar is provided with a slidable clamping block, the clamping block is installed with a clamping block bearing, and the connecting shaft is installed on the clamping block through the clamping block bearing.

[0011] In an optional embodiment, the clamp mounting plate is fixedly connected to a clamp arm, the clamp arm is tilted outward relative to the radial direction of the clamp mounting plate, and the root of the clamp claw is fixedly connected to the outward end of the clamp arm;

[0012] The limit frame is fixedly connected to the limit follower turntable, the root of the limit frame is fixedly connected to the disk surface of the limit follower turntable and the limit frame extends radially outward relative to the limit follower turntable, and a through groove for the clamp claw to pass through is arranged on the limit frame.

[0013] In an optional embodiment, the through slot is arranged in the length direction of the limit frame and includes a closed slot with at least a certain length, and the clamp claw can move linearly along the extension direction of the through slot following the rotation of the clamp mounting plate relative to the limit rotating plate.

[0014] In an optional embodiment, the clamp arm and the limiting frame respectively include a plurality of an even number, and the clamp arm and the limiting frame correspond one to one, and the clamp arm and the limiting frame obliquely intersect;

[0015] The clamp arms and the limiting frames are evenly arranged in the circumferential directions of the clamp mounting plate and the limiting rotating plate, respectively.

[0016] In an optional embodiment, the side facing the axle is the inner side, and the side facing away from the axle is the outer side;

[0017] Each of the clamp arms comprises a pair of clamp arm plates, which are distributed on both sides of the clamp mounting plate and the bases of the clamp arm plates are clamped and mounted on the edge of the clamp mounting plate;

[0018] Each of the limit frames comprises limit frame plates arranged in pairs, the limit frame plates are distributed on the inner and outer sides of the limit follower turntable and the root portions are clamped and installed in the middle part of the limit follower turntable in the radial direction;

[0019] The connection points of the plurality of clamp arms on the clamp mounting plate are located in the same circumferential direction;

[0020] The connection points of the plurality of limit frames on the limit follower turntable are located in the same circumferential direction and are relatively arranged on the radial inner side of the connection point of the clamp arm.

[0021] In an optional embodiment, a linkage assembly is further included, wherein the linkage assembly includes a clamp spring disposed between adjacent clamp arms, and the clamp spring includes a tension spring;

[0022] One end of the clamp spring is connected to the root of the clamp arm and is arranged at the connection position between the clamp arm and the clamp mounting plate, and the other end of the clamp spring is connected to the middle position of the adjacent clamp arm;

[0023] The clamp spring is disposed outside the clamp mounting plate.

[0024] In an optional embodiment, the connecting shaft extends vertically relative to the outer side of the fixture installation plate, and the fixture claw extends vertically relative to the inner side of the limit rotating plate;

[0025] The connecting shaft includes a screw shaft provided with threads, the root of the screw shaft is fixedly connected to the axis of the limit follower turntable and extends outward from the inner side of the limit follower turntable, and the clamp bearing is arranged at the connecting part between the screw shaft and the axis of the clamp mounting disk.

[0026] In an optional embodiment, the connecting cross bar includes a slide rail rod, the slide rail rod is provided with a slide platform and slide grooves located at the front and rear sides, the slide platform includes two pairs of pulleys located at both sides of the bottom, and the pulleys are respectively accommodated in the slide grooves;

[0027] A guide groove is arranged on the top of the slide rail rod, and a guide block is arranged on the bottom of the slide platform, and the guide block is slidably fitted in the guide groove;

[0028] The clamping block is connected to the slide and includes a clamping opening at the top, and the clamping block bearing is installed on the clamping opening;

[0029] It also includes a horizontally arranged screw-on short section for docking with the screw shaft, the screw-on short section protruding from the outer side wall of the clamping block, the screw-on short section including a screw-on sleeve and a connecting rod, the screw-on sleeve is used for threaded connection with the screw shaft, the root of the connecting rod is connected to the inner ring of the clamping block bearing, and the clamping block fixes the outer ring hoop of the clamping block bearing;

[0030] A limit block is arranged on the connecting cross bar, and the limit block is slidably connected to the connecting cross bar and can be locked on the connecting cross bar after abutting and limiting the position of the slide.

[0031] In an optional embodiment, the level comprises a laser level, and the laser level is arranged in the middle of the two axle clamps.

[0032] In a second aspect, the present invention provides a method for using the heavy-duty double-bridge vehicle hub test centering device according to any one of the aforementioned embodiments, comprising the following steps:

[0033] Determine the wheelbase of the two tires of the vehicle to be tested, and make the center distance between the clamping blocks consistent with the determined wheelbase;

[0034] Install the connecting shaft on the clamping block through the clamping block bearing to complete the connection between the axle clamp, the clamping block and the connecting crossbar;

[0035] The axle fixture is clamped and installed on the axle by the fixture claws, and the installation position of the axle fixture is adjusted so that the center of the fixture installation plate and the limit follower turntable coincides with the axis of the axle, and the assembly and installation of the heavy-duty double-axle vehicle hub test centering device between the two tires is completed;

[0036] After the assembly and installation are completed, the vehicle to be tested drives the hub test centering device to the hub drum. Based on the setting of the fixture bearing, the axle clamped with the fixture claw can drive the limiter to rotate synchronously with the turntable, the fixture installation plate and the connecting shaft during the driving process;

[0037] Based on the setting of the clamping block bearing, the clamping block can be kept stationary and fixed when the connecting shaft rotates during driving, and the connecting cross bar can be kept horizontal when driving horizontally;

[0038] After driving onto the hub drum, whether the two tires on the vehicle are in a centering relationship with the hub drum is determined by judging whether the connecting cross bar is in a horizontal state.

[0039] By clamping the axle clamps on the two axles of the test vehicle respectively, installing a connecting cross bar between the two axle clamps, and installing a spirit level on the connecting cross bar, the levelness detected by the spirit level can be used to determine whether the two axle tires are at the same height, thereby providing an intermittent judgment basis for the turning roller to maintain a centering relationship between the two tires and to make the turning roller located in the middle of the two tires.

[0040] Through the heavy-duty double-axle vehicle hub test centering device and use method of the present invention, the driver can be accurately guided to drive the vehicle onto the hub drum with simple structure and steps, and the vehicle to be tested can be kept in an ideal testing state where the two tires are aligned with the hub drum, thereby ensuring the accuracy of the vehicle test results.

[0041] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 This is a schematic diagram of the overall structure of the centering device for the heavy-duty double-bridge vehicle hub test in this application;

[0044] Figure 2 This is a schematic diagram of the outer structure of the axle clamp in this application;

[0045] Figure 3 This is a schematic diagram of the inner structure of the axle clamp in this application;

[0046] Figure 4 It is a structural schematic diagram of the slide and the clamping block in this application.

[0047] icon:

[0048] 1- axle clamp; 11- connecting shaft;

[0049] 2-connecting crossbar; 21-clamping block; 22-clamping block bearing; 23-slide; 24-slideway; 25-pulley; 26-clamping port; 27-threaded short section; 28-threaded sleeve; 29-connecting rod;

[0050] 3-Level;

[0051] 4-clamp mounting plate; 41-clamp claw; 42-clamp arm; 42a-clamp arm plate;

[0052] 5-limiting turntable; 51-limiting frame; 51a-limiting frame plate; 52-through slot;

[0053] 6-Clamp spring;

[0054] 7-Limiting block. DETAILED DESCRIPTION

[0055] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0056] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0057] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0058] The heavy-duty double-axle vehicle hub test centering device and use method in the present application are mainly used in the exhaust emission test detection of heavy-duty diesel double-axle vehicles. By setting up necessary structures, it is possible to examine whether the two tires are at the same level to determine whether the two tires maintain a centering relationship with the hub roller, ensuring that after the vehicle drives to the hub roller, the hub roller is located in the center of the two tires, thereby ensuring the accuracy of the test results.

[0059] See also Figure 1 , and combined with Figure 2-Figure 4 The heavy-duty double-bridge vehicle hub test centering device of the present invention comprises an axle clamp 1, a connecting cross bar 2 and a level 3.

[0060] The axle clamp 1 is mainly used for clamping and installing on the axle, the connecting cross bar 2 is connected between the two axle clamps 1, and the spirit level 3 is installed on the connecting cross bar 2. Through the above-mentioned different main structures, the two axle clamps 1 are connected through the connecting cross bar 2, and the spirit level 3 is used to detect and judge whether the connecting cross bar 2 is in a horizontal state, thereby providing a basis for determining whether the two tires and the rotating drum maintain a centering relationship.

[0061] The heavy-duty double-axle vehicle hub test centering device of the present invention can monitor and adjust the positional relationship of the two tires on the hub roller according to the driving dynamics of the vehicle. When the vehicle is traveling on a horizontal ground, since the axles of the two tires are located at the same height, the connecting cross bar 2 is bound to be able to maintain a relatively horizontal state.

[0062] When the vehicle drives onto the turning roller, since the two tires need to stay on both sides of the turning roller and the turning roller needs to be located in the middle of the two tires, to ensure that the vehicle returns to a horizontal driving state on the turning roller, it is necessary to ensure that the connecting cross bar 2 installed between the two axle clamps 1 remains horizontal.

[0063] In order to achieve the above-mentioned alignment relationship which is conducive to guiding the two tires and the rotating drum, the axle clamp 1 includes two separately arranged ones, which can be clamped on the two axles of the test vehicle respectively, the connecting cross bar 2 is connected between the axle clamps 1, and the spirit level 3 is installed on the connecting cross bar 2.

[0064] The axle clamp 1 is mainly used for clamping the axle and can rotate synchronously with the axle as the vehicle travels. Specifically, the axle clamp 1 includes two clamp plates that are overlapped and arranged in parallel, and the two clamp plates include a clamp installation plate 4 and a limit rotation plate 5 respectively.

[0065] The clamp installation plate 4 is mainly used to install the clamp claws 41 for clamping the axle, and the limit follower turntable 5 is used to guide and limit the opening and closing degree of the clamp claws 41.

[0066] Based on the relationship that the two clamp disks are stacked, overlapped and arranged in parallel, the clamp installation disk 4 and the limit rotating disk 5 can be coaxially installed on the axial center of the axle.

[0067] The axle clamp 1 in the present invention can clamp axles with different shaft diameters. The clamp mounting plate 4 is equipped with multiple clamp claws 41 that cross the limit follower turntable 5 and are perpendicular to the disk surfaces of the two clamp disks. The multiple clamp claws 41 can be clamped on the rim side wall of the axle and can rotate with the axle.

[0068] From the perspective of the connection between the two clamp disks, a connecting shaft 11 is passed through the limit follower disk 5 and the clamp mounting disk 4, and the root of the connecting shaft 11 is fixedly connected to the axis of the limit follower disk 5. A clamp bearing is arranged between the clamp mounting disk 4 and the connecting shaft 11, which can enable the clamp mounting disk 4 to rotate relative to the limit follower disk 5 during the process of adjusting the opening and closing degree of the clamp claw 41, thereby changing the circumferential opening and closing range of the clamp claw 41 connected to the clamp mounting disk 4, so as to achieve clamping of axles with different shaft diameters.

[0069] In view of the wheelbase of different vehicles, a slidable clamping block 21 is provided on the connecting cross bar 2 in the present invention, a clamping block bearing 22 is installed on the clamping block 21, and the connecting shaft 11 is installed on the clamping block 21 through the clamping block bearing 22.

[0070] Through the above-mentioned structural composition, the axle clamp 1 as a whole can be connected to the clamping block 21 for relative rotation. When the vehicle is driving, the axle is clamped by the clamp claw 41 so that the axle clamp 1 is attached and fixed to the axle, and the clamp mounting plate 4 and the limit follower turntable 5 can rotate synchronously with the axle.

[0071] At the same time, under the action of the clamping block bearing 22, the connecting shaft 11 and the axle clamp 1 as a whole can be idle on the clamping block 21 without affecting the judgment of the connecting beam on whether the two axles are at the same height.

[0072] The definition of the clamp mounting disk 4 and the limit follower turntable 5 in the present application is mainly carried out during the clamping process. The main technical purpose of the clamp mounting disk 4 is to connect the clamp claw 41, and the main technical purpose of the limit follower turntable 5 is to first be able to limit the position so that the clamp claw 41 can be opened and closed in the radial direction of the overall axle clamp 1 to adapt to different axle clamping, and then rotate with the wheel when the vehicle is driving, and then through the connection of the clamp claw 41 on the clamp mounting disk 4, the limit follower turntable 5 drives the clamp mounting disk 4 to rotate synchronously with the wheel.

[0073] In one specific embodiment, the clamp mounting disk 4 is fixedly connected to a clamp arm 42, and the clamp arm 42 is radially inclined and outwardly extended relative to the clamp mounting disk 4. Furthermore, the end of the inclined outwardly extended portion radially protrudes from the disk surface of the clamp mounting disk 4, and the root of the clamp claw 41 is fixedly connected to the outwardly extended end of the clamp arm 42, so that the clamp claw 41 can pass the limit and follow the turntable 5.

[0074] The limiting rotating disk 5 is fixedly connected to a limiting frame 51, the root of which is fixedly connected to the disk surface of the limiting rotating disk 5 and the limiting frame 51 extends radially outward relative to the limiting rotating disk 5, and a through groove 52 for the clamp claw 41 to pass through is provided on the limiting frame 51.

[0075] Through this arrangement, the clamp arm 42 can be tilted relative to the limit frame 51. During the clamping process, the clamp arm 42 can follow the rotation of the clamp mounting plate 4 relative to the limit follower turntable 5 and change its circumferential and radial positions. At the same time, combined with the radial outward extension of the limit frame 51 relative to the limit follower turntable 5, the clamp claw 41 connected at the root to the clamp arm 42 can be restricted from telescopic movement in the radial direction of the limit follower turntable 5 in the through groove 52 on the limit frame 51, thereby realizing the adjustment of the circumferential opening and closing size of the clamp claw.

[0076] Specifically, the through groove 52 is arranged in the length direction of the limit frame 51, and includes a closed groove with a through-length structure of at least a certain length. The clamp claw 41 can follow the rotation of the clamp mounting plate 4 relative to the limit follower turntable 5 and move linearly along the extension direction of the through groove 52, so that the through groove 52 constitutes a regulating structure for the radial linear movement of the clamp claw 41 along the limit follower turntable 5.

[0077] The clamp arm 42 and the limit frame 51 in this embodiment respectively include a plurality of evenly distributed ones. Specifically, in order to form effective and reliable clamping, the clamp arm 42 and the limit frame 51 respectively include a plurality of even numbers. Similarly, the number of clamp claws 41, clamp arms 42 and the limit frame 51 is the same, and the clamp arms 42 and the limit frame 51 correspond one-to-one. On this basis, the clamp claws 41 also correspond one-to-one with the clamp arms 42 and the limit frame 51.

[0078] According to the technical descriptions described above, each clamp arm 42 and each limit frame 51 intersect obliquely. Further, the clamp arms 42 and the limit frames 51 are evenly arranged on the circumference of the clamp mounting plate 4 and the limit follower turntable 5, respectively, and the setting of an even number of clamp arms 42, clamp claws 41 and limit frames 51 can be more conducive to the uniform distribution of the clamping force. The setting of an even number can facilitate the uniform arrangement of the clamp arms 42, clamp claws 41 and limit frames 51 on the clamp mounting plate 4 and the limit follower turntable 5, ensuring the stable and uniform distribution of the clamping force.

[0079] In order to make the technical description clearer and more direct, in the present invention, the side facing the axle is positioned as the inner side, and the side away from the axle is positioned as the outer side.

[0080] From the perspective of enhancing the structural strength of the axle clamp 1 and ensuring stable clamping, each clamp arm 42 includes a pair of clamp arm plates 42a, which are distributed on the inner and outer sides of the clamp mounting plate 4 and the roots are clamped and installed on the edge of the clamp mounting plate 4.

[0081] Each of the limit frames 51 includes limit frame plates 51a arranged in pairs, and the limit frame plates 51a are distributed on the inner and outer sides of the limit follower turntable 5 and the roots are clamped and installed in the radial middle part of the limit follower turntable 5. Through this arrangement, on the one hand, the structural strength of the clamping assembly can be enhanced, and on the other hand, through the different connection points at the edge and the radial middle part, the clamp arm 42 can maintain a relative inclination relationship with respect to the limit frame 51. At the same time, during the axle clamping process, along with the rotation of the clamp mounting plate 4 relative to the limit follower turntable 5, the clamp claw 41 connected to the end of the clamp arm 42 can adjust the clamping opening and closing degree during the sliding process of the through slot 52 of the limit frame 51.

[0082] Based on the fact that the clamp claw 41 can clamp the axle in the circumferential direction, and the clamp mounting plate 4 and the limit turntable 5 are installed concentrically with the axis of the axle, the multiple clamp arms 42 have the same shape, and the connection points of the multiple clamp arms 42 on the clamp mounting plate 4 are located in the same circumferential direction.

[0083] Furthermore, the shapes of multiple limit frames 51 are also the same structure, and their connection points on the limit turntable 5 are also located in the same circumferential direction, and the connection points of the limit frames 51 on the limit turntable 5 are relatively arranged on the radial inner side of the connection points of the clamp arms 42 on the clamp mounting disk 4, thereby providing an inclination angle for the clamp claws 41 during the clamping process and facilitating the provision of opening and closing space.

[0084] In another specific embodiment, all the clamp arms 42 connected to the clamp mounting plate 4 are in a linkage action relationship, and the linkage action is specifically performed by a linkage component provided on the clamp mounting plate 4 .

[0085] Specifically, the linkage component includes a clamp spring 6 arranged between adjacent clamp arms 42. During the process of adjusting the opening and closing degree of the clamp claw 41, the position of the clamp claw 41 on the through slot 52 of the limit frame 51 is adjusted by driving the inclination angle of any clamp arm 42 relative to the limit frame 51, thereby enabling the linkage of all clamp arms 42 to be achieved through the clamp spring 6.

[0086] During the joint movement of the clamp arm 42 and the clamp claw 41, the clamp spring 6 on the clamp arm 42 will be in a telescopic state, thereby generating a reverse force to enable the axle clamp 1 to be fixed on axles of different diameters. From this perspective, the clamp spring 6 includes a tension spring, which can complete the clamping and fixing of the clamp claw 41 on the axle under the tensile force of the tension spring.

[0087] Based on this, one end of the clamp spring 6 is connected to the root of the clamp arm 42 and is arranged at the connection position between the clamp arm 42 and the clamp mounting plate 4. The other end of the clamp spring 6 is connected to the middle position of the adjacent clamp arm 42, which can realize stable and effective linkage of the clamp arm 42.

[0088] At the same time, in order to facilitate operation, the clamp spring 6 is arranged on the outside of the clamp mounting plate 4. Furthermore, clamping handles are respectively connected on the two opposite clamping arms and at the ends of the limit frames 51 corresponding to the clamping arms, so that the clamping and adjustment operations can be performed by holding the clamping handles.

[0089] From the perspective of connecting the axle clamp 1 with the connecting shaft 11 , the connecting shaft 11 extends perpendicularly relative to the outer side of the clamp mounting plate 4 and can be connected to the clamp block bearing 22 on the clamp block 21 .

[0090] The clamp claws 41 are relatively limited and extend vertically along the inner side of the turntable 5 to clamp the side wall of the wheel rim of the axle.

[0091] Furthermore, the connecting shaft 11 includes a screw shaft provided with a thread, the root of which is fixedly connected to the axis of the limit follower turntable 5, and extends outward from the inner side of the limit follower turntable 5. When passing through the axis of the clamp mounting disk 4, the clamp mounting disk 4 is rotated relative to the limit follower turntable 5 during the clamping process through the clamp bearing at the center of the clamp mounting disk 4.

[0092] The clamp bearing is arranged at the connecting part between the screw shaft and the axis of the clamp mounting plate 4. Specifically, the screw shaft is connected to the inner circle of the clamp bearing, the clamp mounting plate 4 is connected to the outer circle of the clamp bearing, and the connecting shaft 11 in the form of a screw shaft is connected to the limit follower turntable 5 as an integrated structure, which can constitute the above-mentioned relative rotation matching relationship.

[0093] The connecting cross bar 2 in this embodiment includes a slide rail rod, a slide table 23 is provided on the slide rail rod, and slide grooves 24 are provided on the slide rail rod at the front and rear sides. The slide table 23 includes two pairs of pulleys 25 at the bottom sides, and the pulleys 25 are respectively accommodated in the slide grooves 24. Specifically, the spacing of the slide tables 23 on the connecting cross bar 2 can be adjusted according to the specific wheelbase to meet the connection requirements of different vehicle models. The setting of the pulleys 25 ensures the smoothness of the adjustment of the spacing of the slide tables 23.

[0094] A guide groove is arranged at the top of the slide rail rod, and a guide block is arranged at the bottom of the slide platform 23. The guide block is slidably fitted in the guide groove, which can play a good positioning and guiding effect.

[0095] From the perspective of the connection between the connecting shaft 11 and the clamping block 21 , the clamping block 21 is connected to the slide 23 and includes a clamping opening 26 at the top, and the clamping block bearing 22 is installed on the clamping opening 26 .

[0096] Furthermore, it also includes a horizontally arranged screw-on short section 27 for docking with the screw shaft, the screw-on short section 27 protrudes from the outer wall of the clamping block 21, and specifically includes a screw-on sleeve 28 and a connecting rod 29, the screw-on sleeve 28 is used for threaded connection of the screw shaft, the root of the connecting rod 29 is connected to the inner ring of the clamping block bearing 22, and the clamping block 21 fixes the outer ring clamp of the clamping block bearing 22. Through this arrangement, after the axle clamp 1 is clamped on the axle, during the driving of the vehicle, the connecting shaft 11 can rotate synchronously with the axle clamp 1 while idling on the clamping block 21, thereby avoiding affecting the state of the connecting beam.

[0097] For different wheelbases, a limit block 7 is provided on the connecting cross bar 2. The limit block 7 is slidably connected to the connecting cross bar 2 and can be locked on the connecting cross bar 2 after the position of the slide 23 is abutted and limited, thereby fixing the slide 23 and correspondingly stabilizing the distance between the slides 23.

[0098] The level meter 3 in the present invention includes a laser level meter 3 installed on the connecting cross bar 2. The laser level meter 3 is set in the middle part of the two axle clamps 1. It can reflect whether the connecting cross bar 2 is in a horizontal state in the middle part, and then can truly restore the position state of the two axles, providing a reliable judgment basis for dynamic driving adjustment.

[0099] The present invention also provides a method for using the above-mentioned heavy-duty double-axle vehicle hub test centering device, which is mainly used to dynamically guide the driving of the vehicle, so that when the tires drive on the hub roller, the hub roller is centered between the two tires, and the test is carried out with the two axles at the same horizontal height. After the axles are clamped by the two axle clamps 1 of the heavy-duty double-axle vehicle hub test centering device, combined with the real-time feedback of the horizontality of the connecting beam between the two axle clamps 1, the driver can be guided to keep the tires in an ideal test state.

[0100] Specifically, the method of use comprises the following steps:

[0101] Determine the wheelbase of the two tires of the vehicle to be tested, and make the center distance between the clamping blocks 21 consistent with the determined wheelbase;

[0102] The connecting shaft 11 is installed on the clamping block 21 through the clamping block bearing 22, and the connection between the axle clamp 1 and the clamping block 21 and the connecting cross bar 2 is completed;

[0103] The axle clamp 1 is clamped and installed on the axle by the clamp claw 41, and the installation position of the axle clamp 1 is adjusted so that the center of the clamp installation plate 4 and the limit follower turntable 5 coincides with the axis of the axle, and the assembly and installation of the heavy-duty double-bridge vehicle hub test centering device between the two tires is completed;

[0104] After the assembly and installation are completed, the vehicle to be tested drives the hub test centering device to the hub drum. Based on the setting of the fixture bearing, the axle clamped with the fixture claw 41 can drive the limiter to rotate synchronously with the turntable 5, the fixture installation plate 4 and the connecting shaft 11 during the driving process;

[0105] Based on the arrangement of the clamping block bearing 22, the clamping block 21 can be kept stationary and fixed when the connecting shaft 11 rotates during driving, and the connecting cross bar 2 can be kept horizontal in the horizontal driving state;

[0106] After driving onto the hub drum, whether the two tires on the vehicle are in a centering relationship with the hub drum is determined by determining whether the connecting cross bar 2 is in a horizontal state.

[0107] The heavy-duty double-axle vehicle rotating hub test centering device and use method of the present invention have simple structure, convenient operation, easy installation and can conveniently observe and judge whether the axles of two tires are at the same height, thereby ensuring the accuracy of the test results.

[0108] By fixing the axle clamp 1 on the central axle of the two sets of tires of the double-bridge vehicle and connecting it with the connecting cross bar 2 as a whole, the spirit level 3 on the connecting cross bar 2 can measure the horizontal angle between the two sets of tires on both sides of the hub drum, and adjust the front and rear position of the vehicle according to the change of the angle, so as to reduce the horizontal deviation of the tires on both sides when the vehicle is parked on the hub.

[0109] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0110] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A heavy-duty double-bridge vehicle hub test centering device, characterized in that: Includes axle clamps, connecting crossbars, and a level; The axle clamps include two separately arranged ones, and can be respectively clamped on two axles of the test vehicle, the connecting cross bar is connected between the axle clamps, and the level is installed on the connecting cross bar; The axle clamp comprises clamp plates which are overlapped and arranged in parallel, the clamp plates comprise a clamp installation plate and a limit rotation plate, the clamp installation plate and the limit rotation plate can be coaxially installed at the axial center of the axle, the clamp installation plate is provided with a plurality of clamp claws which pass over the limit rotation plate and are perpendicular to the disk surfaces of the two clamp plates, the plurality of clamp claws can be clamped on the side wall of the wheel rim of the axle and can rotate with the axle; A connecting shaft is connected between the limit follower turntable and the fixture installation plate, the root of the connecting shaft is fixedly connected to the axis of the limit follower turntable, and a fixture bearing is arranged between the fixture installation plate and the connecting shaft; The connecting cross bar is provided with a slidable clamping block, the clamping block is installed with a clamping block bearing, and the connecting shaft is installed on the clamping block through the clamping block bearing.

2. The heavy-duty double-bridge vehicle hub test centering device according to claim 1, characterized in that: The clamp mounting plate is fixedly connected to a clamp arm, the clamp arm is tilted and stretched outward relative to the radial direction of the clamp mounting plate, and the root of the clamp claw is fixedly connected to the outward end of the clamp arm; The limit frame is fixedly connected to the limit follower turntable, the root of the limit frame is fixedly connected to the disk surface of the limit follower turntable and the limit frame extends radially outward relative to the limit follower turntable, and a through groove for the clamp claw to pass through is arranged on the limit frame.

3. The heavy-duty double-bridge vehicle hub test centering device according to claim 2, characterized in that: The through slot is arranged in the length direction of the limit frame and comprises a closed slot with at least a certain length. The clamp claw can move linearly along the extension direction of the through slot following the rotation of the clamp mounting plate relative to the limit rotating plate.

4. The heavy-duty double-bridge vehicle hub test centering device according to claim 2, characterized in that: The clamp arms and the limiting frames respectively include a plurality of an even number, and the clamp arms correspond to the limiting frames one by one, and the clamp arms and the limiting frames obliquely intersect each other; The clamp arms and the limiting frames are evenly arranged in the circumferential directions of the clamp mounting plate and the limiting rotating plate, respectively.

5. The heavy-duty double-bridge vehicle hub test centering device according to claim 2, characterized in that: The side facing the axle is the inner side, and the side facing away from the axle is the outer side. Each of the clamp arms comprises a pair of clamp arm plates, which are distributed on both sides of the clamp mounting plate and the bases of the clamp arm plates are clamped and mounted on the edge of the clamp mounting plate; Each of the limit frames comprises limit frame plates arranged in pairs, the limit frame plates are distributed on the inner and outer sides of the limit follower turntable and the root portions are clamped and installed in the middle part of the limit follower turntable in the radial direction; The connection points of the plurality of clamp arms on the clamp mounting plate are located in the same circumferential direction; The connection points of the plurality of limit frames on the limit follower turntable are located in the same circumferential direction and are relatively arranged on the radial inner side of the connection point of the clamp arm.

6. The heavy-duty double-bridge vehicle hub test centering device according to claim 2, characterized in that: Also included is a linkage assembly, the linkage assembly including a clamp spring disposed between adjacent clamp arms, the clamp spring including a tension spring; One end of the clamp spring is connected to the root of the clamp arm and is arranged at the connection position between the clamp arm and the clamp mounting plate, and the other end of the clamp spring is connected to the middle position of the adjacent clamp arm; The clamp spring is disposed outside the clamp mounting plate.

7. The heavy-duty double-bridge vehicle hub test centering device according to any one of claims 1 to 6, characterized in that: The connecting shaft extends vertically relative to the outer side of the fixture installation plate, and the fixture claw extends vertically relative to the inner side of the limit rotating plate; The connecting shaft includes a screw shaft provided with threads, the root of the screw shaft is fixedly connected to the axis of the limit follower turntable and extends outward from the inner side of the limit follower turntable, and the clamp bearing is arranged at the connecting part between the screw shaft and the axis of the clamp mounting disk.

8. The heavy-duty double-bridge vehicle hub test centering device according to claim 7, characterized in that: The connecting cross bar comprises a slide rail rod, the slide rail rod is provided with a slide platform and slide grooves located at the front and rear sides, the slide platform comprises two pairs of pulleys located at the bottom sides, and the pulleys are respectively accommodated in the slide grooves; A guide groove is arranged on the top of the slide rail rod, and a guide block is arranged on the bottom of the slide platform, and the guide block is slidably fitted in the guide groove; The clamping block is connected to the slide and includes a clamping opening at the top, and the clamping block bearing is installed on the clamping opening; It also includes a horizontally arranged screw-on short section for docking with the screw shaft, the screw-on short section protruding from the outer side wall of the clamping block, the screw-on short section including a screw-on sleeve and a connecting rod, the screw-on sleeve is used for threaded connection with the screw shaft, the root of the connecting rod is connected to the inner ring of the clamping block bearing, and the clamping block fixes the outer ring hoop of the clamping block bearing; A limit block is arranged on the connecting cross bar, and the limit block is slidably connected to the connecting cross bar and can be locked on the connecting cross bar after abutting and limiting the position of the slide.

9. The heavy-duty double-bridge vehicle hub test centering device according to claim 1, characterized in that: The level comprises a laser level, and the laser level is arranged at the center of the two axle clamps.

10. A method for using the heavy-duty double-bridge vehicle hub test centering device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Determine the wheelbase of the two tires of the vehicle to be tested, and make the center distance between the clamping blocks consistent with the determined wheelbase; Install the connecting shaft on the clamping block through the clamping block bearing to complete the connection between the axle clamp, the clamping block and the connecting crossbar; The axle fixture is clamped and installed on the axle by the fixture claws, and the installation position of the axle fixture is adjusted so that the center of the fixture installation plate and the limit follower turntable coincides with the axis of the axle, and the assembly and installation of the heavy-duty double-axle vehicle hub test centering device between the two tires is completed; After the assembly and installation are completed, the vehicle to be tested drives the hub test centering device to the hub drum. Based on the setting of the fixture bearing, the axle clamped with the fixture claw can drive the limiter to rotate synchronously with the turntable, the fixture installation plate and the connecting shaft during the driving process; Based on the setting of the clamping block bearing, the clamping block can be kept stationary and fixed when the connecting shaft rotates during driving, and the connecting cross bar can be kept horizontal when driving horizontally; After driving onto the hub drum, whether the two tires on the vehicle are in a centering relationship with the hub drum is determined by judging whether the connecting cross bar is in a horizontal state.

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