Centering device and chassis dynamometer

Abstract

The present disclosure relates to a centering device and a chassis dynamometer, the centering device comprising a base body, a driving mechanism and a centering mechanism. The driving mechanism is arranged on the base body, and the centering mechanism comprises two support assemblies movably arranged on the base body. The driving mechanism is drivingly connected to the two support assemblies to drive the two support assemblies to move closer to or away from each other in a first direction. Each support assembly comprises a support roller which is adjustable in position in a second direction. The support roller extends in a third direction. The first direction, the second direction and the third direction are perpendicular to each other. The centering device is used to adjust the centering of a wheel and a hub. The centering device has higher efficiency, is simple and reliable to operate, and the support roller of the support assembly can be adjusted in height in the second direction according to different types of hub to adapt to different types of hub, and has good compatibility.

Description

Technical Field

[0001] This disclosure relates to vehicle testing equipment, specifically, to a centering device and a chassis dynamometer. Background Technology

[0002] When automotive engineers conduct whole vehicle tests on a chassis dynamometer, in order to improve test safety and accuracy, it is usually necessary to ensure the alignment of the vehicle and the chassis dynamometer. However, in related technologies, the alignment of the vehicle and the chassis dynamometer is inefficient. Utility Model Content

[0003] The purpose of this disclosure is to provide a centering device and a chassis dynamometer. When performing whole vehicle testing on the chassis dynamometer, the centering device can be used to center the vehicle and the chassis dynamometer with high efficiency.

[0004] To achieve the above objectives, a first aspect of this disclosure provides a centering device, comprising: Matrix; A drive mechanism is disposed on the base; and The centering mechanism includes two support components movably disposed on the base. The drive mechanism is driven to connect the two support components to drive the two support components to move closer or further apart from each other in a first direction. Each support component includes a support roller whose position is adjustable in a second direction. The support roller extends along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0005] In the above embodiments, the alignment device is an independent device that can be applied to different chassis dynamometers, thus giving it high versatility. When the alignment device is applied to a chassis dynamometer, the drive mechanism drives two support components to move closer or further apart in a first direction. This allows the support rollers on the support components to move closer or further away from the wheel placed on the chassis dynamometer. During the process of the two support components moving closer together, the support rollers of the two support components clamp the wheel, enabling the vehicle to move at least in the longitudinal direction of the chassis dynamometer. This ensures that the contact point between the wheel and the hub is located at the highest point of the hub, thus achieving alignment (i.e., longitudinal alignment) between the wheel and the hub in the longitudinal direction of the chassis dynamometer. Furthermore, using this alignment device to adjust the alignment between the wheel and the hub is more efficient and simple and reliable to operate.

[0006] In addition, each support assembly includes a support roller whose position is adjustable in the second direction, allowing adjustment of the support roller's position and height in the second direction to adapt to different types of hubs when the centering device is applied to a chassis dynamometer, thus providing good compatibility.

[0007] In some possible implementations, the support assembly further includes a support frame movably connected to the base along the first direction, the support frame comprising at least two mounting structures positioned differently in the second direction, to which the support roller can be selectively connected. Thus, by selectively connecting to different mounting structures, the position of the support roller in the second direction is adjustable, adapting to different types of hubs when the alignment device is applied to a chassis dynamometer, thereby improving compatibility.

[0008] In some possible implementations, the mounting structure includes at least two mounting slots spaced apart in the support frame along a third direction, the support roller extending along the third direction and rotatably engaging with the at least two mounting slots. This configuration simplifies the support frame structure and facilitates the installation of the support roller into the mounting slots.

[0009] In some possible implementations, the support frame includes a base plate and at least two support plates spaced apart on the base plate in a third direction, and the at least two mounting slots of the mounting structure are correspondingly disposed on the at least two support plates.

[0010] In some possible implementations, the base includes a base portion and a positioning portion. The centering mechanism is disposed on the base portion, and the positioning portions are disposed at opposite ends of the base portion along the first direction. The two positioning portions are symmetrically arranged about a first symmetrical plane in the first direction, and the two support rollers are symmetrically arranged about a second symmetrical plane in the first direction, with the first and second symmetrical planes coinciding. This arrangement allows the positioning portions to be used for positioning the centering device, ensuring that the centering device is in a preset position, facilitating more precise wheel alignment subsequently.

[0011] In some possible implementations, the positioning part includes a positioning plate extending in a third direction, which can stably support the centering device in the third direction and further prevent the centering device from tipping over in the third direction.

[0012] In some possible implementations, the base includes a base portion and a connecting rod portion connected to the base portion and extending along or inclined to the second direction. The centering mechanism is disposed on the base portion, and the base portion is provided with a movable member that allows the centering device to move. This arrangement positions the end of the connecting rod portion away from the base portion higher, facilitating operator control of the connecting rod portion to move the centering device. The movable member further enhances the ease of movement of the centering device.

[0013] In some possible implementations, the moving element includes a first rolling element disposed at the bottom of the base, enabling the centering device to move via the first rolling element. And / or, The moving element includes a second rolling element disposed on the side wall of the base portion opposite to the support roller, so that the centering device can be moved by the second rolling element.

[0014] In some possible implementations, the drive mechanism includes a drive element and a transmission assembly, the drive element being drively connected to the two support assemblies via the transmission assembly; The driving component is disposed on the connecting rod portion, and the transmission assembly is disposed on the base portion and the connecting rod portion. This arrangement allows for a more rational distribution of the driving component and the transmission assembly between the base portion and the connecting rod portion; or... Both the driving component and the transmission assembly are mounted on the base portion, which allows for a more compact arrangement of the driving component and the transmission assembly.

[0015] In some possible implementations, the transmission assembly includes a lead screw extending along the first direction and two sliders. The lead screw includes a first threaded section and a second threaded section, the first threaded section and the second threaded section having opposite directions of rotation. The two sliders are respectively threaded to the first threaded section and the second threaded section. The two sliders are respectively connected to the two support assemblies. The driving member is driven to the lead screw so as to drive the two support assemblies closer to or further away from each other through the two sliders.

[0016] In some possible implementations, the transmission assembly further includes a drive sprocket, a chain, and a driven sprocket, the driven sprocket being connected to the lead screw, the chain being sleeved on the drive sprocket and the driven sprocket, the drive sprocket being rotatably mounted on the connecting rod portion, and the drive member including a rocker arm connected to the drive sprocket.

[0017] In some possible implementations, the base portion includes a guide rail extending along the first direction, and the support component is slidably connected to the guide rail via a guide member, which can be used to guide the movement of the support component and make the movement of the support component more stable.

[0018] In some possible implementations, the end of the connecting rod away from the base is provided with a handle that allows the operator to grip it, making it easier for the operator to push and pull the centering device.

[0019] A second aspect of this disclosure provides a chassis dynamometer, the chassis dynamometer including a frame and a plurality of hubs disposed on the frame, the frame being detachably connected to a limiting assembly for positioning a centering device as described in the first aspect of this disclosure relative to the frame and / or at least one of the hubs.

[0020] In the above embodiments, the centering device is positioned relative to the platform and / or at least one hub by the limiting component, so that the centering device can be moved more accurately to the position where the centering device is used for the wheel centering of the vehicle, thereby ensuring the accurate positioning of the vehicle's wheels by the subsequent centering device.

[0021] In some possible implementations, at least one hub cooperates with the limiting assembly, which includes two limiting plates spaced apart on the frame along the longitudinal direction of the chassis dynamometer, the limiting plates extending along the lateral direction of the chassis dynamometer, the two limiting plates being symmetrical about a third symmetry plane, and a centering device for inserting between the two limiting plates along the lateral direction, the centering device contacting the two limiting plates respectively, so that the second symmetry plane of the two support rollers of the centering device coincides with the third symmetry plane; The third symmetry plane is a plane passing through the central axis of the hub and parallel to the left-right direction of the chassis dynamometer, and the third symmetry plane is perpendicular to the front-back direction.

[0022] In the above embodiment, the centering device is positioned in the front-rear direction of the chassis dynamometer by two limiting plates, so that the second symmetry plane and the third symmetry plane of the two support rollers in the centering device coincide, thereby completing the positioning of the centering device, so that the subsequent centering device can achieve more accurate centering of the wheel.

[0023] In some possible implementations, the platform includes a floor groove extending along the front-rear direction, the floor groove having a first mounting position and a second mounting position, one of the two limiting plates being detachably connected to the first mounting position and the other being detachably connected to the second mounting position.

[0024] In the above embodiments, by pre-setting a first installation position and a second installation position on the floor groove for the installation of the two limiting plates, the positioning and installation of the two limiting plates can be facilitated, and the precise installation of the two limiting plates can be achieved.

[0025] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0026] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the centering device provided in an exemplary embodiment of this disclosure; Figure 2 This disclosure differs from the exemplary embodiments provided herein. Figure 1 A schematic diagram of the angle structure; Figure 3 This is a partial structural schematic diagram of the centering device provided in an exemplary embodiment of this disclosure; Figure 4 This is a schematic diagram of the structure of the support component, base portion, positioning portion, and transmission component provided in the exemplary embodiments of this disclosure; Figure 5 The support assembly, base portion, positioning portion, and transmission assembly provided in the exemplary embodiments of this disclosure are different from those of the support assembly, base portion, positioning portion, and transmission assembly provided in this disclosure. Figure 4 A schematic diagram of the structure of the viewpoint; Figure 6 This is a schematic diagram of the support frame provided in an exemplary embodiment of this disclosure; Figure 7 This is a schematic diagram of the structure including the limiting component, the centering device, and the wheel in an exemplary embodiment of this disclosure; Figure 8 This is a schematic diagram of the structure of some chassis dynamometers, limit components and centering devices provided in the exemplary embodiments of this disclosure; Figure 9 This is a schematic diagram of the chassis dynamometer and limit assembly provided in the disclosed exemplary embodiment.

[0027] Explanation of reference numerals in the attached figures 10-Base; 11-Base section; 111-Guide rail; 12-Positioning section; 121-Positioning plate; 13-Connecting rod section; 14-Guide component; 20-Drive mechanism; 21-Drive component; 211-Rock arm; 22-Transmission assembly; 221-Lead screw; 2211-First threaded section; 2212-Second threaded section; 222-Slider; 223-Drive sprocket; 224-Chain; 225-Driven sprocket; 30-Centering mechanism; 31-Support assembly; 311-Support roller; 312- Support frame; 3121-Base plate; 3122-Support plate; 3123-Mounting structure; 31231-Mounting slot; 40-Moving component; 41-First rolling element; 411-Ball-type caster wheel; 42-Second rolling element; 421-Roller; 50-Handle; 60-Chassis dynamometer; 61-Bench; 611-Floor groove; 62-Drum; 70-Limiting assembly; 71-Limiting plate; 80-First mounting position; 90-Second mounting position; 100-Alignment device; 200-Wheel; A - First plane of symmetry; B - Second plane of symmetry; C - Third plane of symmetry. Detailed Implementation

[0028] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0029] In this disclosure, an XYZ coordinate system is established for the centering device, where the X direction is the first direction, which is the direction of movement of the support component of the centering device; the Y direction is the third direction, which is the direction of extension of the positioning plate; and the Z direction is the second direction, which is the height direction of the centering device during normal use, with the arrow pointing upwards and downwards.

[0030] The chassis dynamometer is defined with "vertical, horizontal, and front-back directions." The vertical direction refers to the up-and-down movement of the chassis dynamometer during normal operation; the horizontal direction refers to the left-and-right movement; and the front-back direction refers to the front-and-back movement. Unless otherwise stated, directional terms such as "inner" and "outer" refer to the inner or outer contour relative to the component or structure itself. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description referring to the accompanying drawings, the same reference numerals in different drawings denote the same element.

[0031] When automotive engineers conduct whole-vehicle testing on a chassis dynamometer, to improve test safety and accuracy, they typically need to ensure alignment between the vehicle and the dynamometer. When a vehicle has four wheels, the dynamometer usually has four hubs. Before testing, the vehicle is typically driven onto the dynamometer, with each of the four wheels resting on a hub. However, misalignment between the wheels and their corresponding hubs is a common problem. This misalignment generally includes two types: longitudinal misalignment and lateral misalignment. Longitudinal misalignment occurs when the contact point between the wheel and the hub is not at the highest point of the hub in the vertical direction of the chassis dynamometer. Lateral misalignment occurs when the wheel's central axis is not parallel to the hub's central axis. To ensure vehicle wheels are aligned with their corresponding hubs—that is, the contact point between the vehicle wheels and the hubs should be at the highest point of the hubs, and the central axis of the vehicle wheels should be parallel to the central axis of the corresponding hubs—vehicle wheels and hubs must be aligned before the vehicle is tested using a chassis dynamometer. Alignment with the chassis dynamometer typically involves using reference lines, laser alignment devices, etc., and requires the cooperation of the test personnel to adjust the vehicle. The inventors discovered that using reference lines and laser alignment devices for vehicle alignment is inefficient.

[0032] Based on this, the first aspect of this disclosure provides a centering device 100, such as... Figures 1 to 7 As shown, the centering device 100 includes a base 10, a drive mechanism 20, and a centering mechanism 30. The drive mechanism 20 is disposed on the base 10, and the centering mechanism 30 includes two support components 31 movably disposed on the base 10. The drive mechanism 20 is driven to connect to the two support components 31 to drive the two support components 31 to move closer or further apart from each other in a first direction. Each support component 31 includes a support roller 311 whose position is adjustable in a second direction. The support roller 311 extends along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

[0033] In the above embodiments, the centering device 100 is an independent device that can be applied to different chassis dynamometers 60, thus giving it high versatility. When the centering device 100 is applied to the chassis dynamometer 60, the drive mechanism 20 drives the two support components 31 to move closer or further apart in a first direction. This allows the support rollers 311 on the support components 31 to move closer or further away from the wheel 200 placed on the chassis dynamometer 60. During the process of the two support components 31 moving closer together, the support rollers 311 of the two support components 31 clamp the wheel 200, which at least allows the vehicle to move in the longitudinal direction of the chassis dynamometer 60. This ensures that the contact point between the wheel 200 and the hub 62 is located at the highest point of the hub 62, thereby achieving centering (i.e., longitudinal centering) of the wheel 200 and the hub 62 in the longitudinal direction of the chassis dynamometer 60. In addition, using the centering device 100 to adjust the centering of the wheel 200 and the hub 62 is more efficient and simple and reliable to operate.

[0034] In addition, each support assembly 31 includes a support roller 311 whose position is adjustable in the second direction, which can adjust the position height of the support roller 311 in the second direction to adapt to different types of hubs 62 when the centering device 100 is applied to the chassis dynamometer 60, thus achieving good compatibility.

[0035] In some implementations, the type of hub 62 of the chassis dynamometer 60 is different in order to match the tires of different vehicles, and the height of the hub 62 protruding from the platform 61 is different. The support roller 311 of the support assembly 31 can be adjusted in the second direction according to the different types of hub 62 to adapt to the different types of hub 62, so that the compatibility is good.

[0036] It should be noted that while the vehicle's wheels 200 are longitudinally aligned using the support rollers 311 of the alignment device 100, the wheels 200 can also be laterally aligned.

[0037] To more clearly describe how the centering device 100 centers the wheels 200 of the vehicle, the process of longitudinal and lateral centering of the wheels 200 by the centering device 100 is briefly described below.

[0038] First, the front wheel 200 of the vehicle to be aligned is pressed onto the corresponding hub 62 of the chassis dynamometer 60. Then, the support rollers 311 of the two support components 31 of the alignment device 100 are positioned on both sides of the wheel 200 in the longitudinal direction of the chassis dynamometer 60. The central axis of the hub 62 is on the plane of symmetry of the two support rollers 311 in the longitudinal direction of the chassis dynamometer 60. Then, the two support rollers 311 are brought closer to each other. After at least one of the two support rollers 311 contacts the wheel 200 of the vehicle, the hub 62 rotates. The hub 62 can provide assistance for the movement of the wheel 200. The two support rollers 311 continue to move closer to move the wheel 200 in the longitudinal direction of the chassis dynamometer 60, so that the wheel 200 moves to the point where the contact point between the wheel 200 and the hub 62 is located at the highest point of the hub 62, and longitudinal alignment is achieved between the wheel 200 and the hub 62.

[0039] Furthermore, when the central axis of the wheel 200 is set at an angle to the central axis of the hub 62, during the process of the wheel 200 being clamped and moved by the two support rollers 311, the wheel 200 will slowly return to its original position after being supported by the support rollers 311, so that the central axis of the wheel 200 is parallel to the central axis of the hub 62, thereby completing the lateral alignment of the wheel 200 and the hub 62.

[0040] In some implementations, such as Figures 1 to 6 As shown, the support assembly 31 also includes a support frame 312 movably connected to the base 10 along a first direction. The support frame 312 includes at least two mounting structures 3123 positioned differently in a second direction, and the support roller 311 can be selectively connected to one of the mounting structures 3123. Thus, the position of the support roller 311 in the second direction can be adjusted by selectively connecting to different mounting structures 3123, thereby adapting the centering device 100 to different types of hubs 62 when applied to the chassis dynamometer 60, improving compatibility.

[0041] In addition, mounting structures 3123 at different positions in the second direction can be pre-set on the support frame 312 to facilitate the subsequent installation of the support roller 311.

[0042] In some embodiments, the mounting structure 3123 can be constructed in any suitable manner. For example, the mounting structure 3123 includes at least two mounting slots 31231 spaced apart along a third direction in the support frame 312, and the support roller 311 extends along the third direction and is rotatably engaged in the at least two mounting slots 31231. The support roller 311 is engaged in the support frame 312 via the mounting slots 31231. This arrangement simplifies the structure of the support frame 312 and facilitates the operation of mounting the support roller 311 in the mounting slots 31231.

[0043] In the above embodiment, the support roller 311 is rotatably engaged with at least two mounting slots 31231, so that the support roller 311 can rotate about its own axis in the mounting slots 31231.

[0044] In some possible implementations, the support frame 312 includes a base plate 3121 and at least two support plates 3122 spaced apart on the base plate 3121 along a third direction, and at least two mounting slots 31231 of the mounting structure 3123 are correspondingly disposed on the at least two support plates 3122.

[0045] like Figure 1 and Figure 6 As shown, the support frame 312 includes a base plate 3121 and two support plates 3122 spaced apart on the base plate 3121 along a third direction. The two support plates 3122 are provided with two mounting structures 3123 positioned differently in a second direction. Each mounting structure 3123 includes two mounting slots 31231 correspondingly disposed on the two support plates 3122 along a third direction.

[0046] In some implementations, such as Figures 1 to 6 As shown, the base 10 includes a base portion 11 and a positioning portion 12. The centering mechanism 30 is disposed on the base portion 11. The base portion 11 is provided with positioning portions 12 at opposite ends along the first direction. The two positioning portions 12 are symmetrically arranged about the first symmetry plane A in the first direction. The two support rollers 311 are symmetrically arranged about the second symmetry plane B in the first direction. The first symmetry plane A and the second symmetry plane B coincide.

[0047] In the above embodiments, the positioning part 12 can be used to position the centering device 100 so that the centering device 100 can be in a preset position, which facilitates more accurate centering of the wheel 200 in the future.

[0048] Furthermore, the first symmetry plane A of the two positioning parts 12 in the first direction and the second symmetry plane B of the two support components 31 in the first direction coincide. In this way, the relative position of the second symmetry plane B of the two support rollers 311 with the first symmetry plane A is avoided due to the adjustment of the two support components 31 in the first direction, thereby avoiding affecting the alignment accuracy of the subsequent alignment device 100.

[0049] It should be noted that the aforementioned centering device 100 can be in a preset position that enables the centering device 100 to center the wheel 200. This position can be determined according to actual needs and will not be elaborated here.

[0050] In some implementations, such as Figures 1 to 5As shown, the base portion 11 is provided with positioning portions 12 at opposite ends along the first direction. The two positioning portions 12 can also be used to support the centering device 100, so that the centering device 100 is more stable during the centering process of the vehicle. During the centering process of the wheel 200, the two positioning portions 12 can also prevent the centering device 100 from overturning in the first direction.

[0051] For example, the positioning part 12 includes a positioning plate 121 extending in a third direction. The positioning plates 121, which are respectively provided at both ends of the base part 11 in the first direction, both extend in a third direction, which can stably support the centering device 100 in the third direction and further prevent the centering device 100 from tipping over in the third direction.

[0052] like Figure 1 As shown, the base 10 includes a base portion 11 and a connecting rod portion 13 connected to the base portion 11 and extending along or inclined to the second direction. The centering mechanism 30 is disposed on the base portion 11, and the base portion 11 is provided with a movable member 40 that allows the centering device 100 to move.

[0053] In the above embodiment, the connecting rod 13 is connected to the base 11 and extends along or inclined to the second direction. With this arrangement, the end of the connecting rod 13 away from the base 11 is positioned higher, which makes it easier for the operator to operate the connecting rod 13 to move the centering device 100. The moving part 40 makes it easier to move the centering device 100.

[0054] It should be understood that the movable part 40 can be constructed in any suitable form.

[0055] For example, in some possible implementations, the moving part 40 may include a first rolling element 41 disposed at the bottom of the base 10, so that the centering device 100 can be moved by the first rolling element 41.

[0056] like Figures 1 to 5 As shown, the first rolling element 41 may include a ball-type omnidirectional wheel 411 disposed at the bottom of the base 10. The centering device 100 can move via the ball-type omnidirectional wheel 411 disposed at the bottom of the base 10, wherein the number of ball-type omnidirectional wheels 411 may be multiple. Of course, the first rolling element 41 may also be constructed in other forms, such as omnidirectional roller 421.

[0057] In some embodiments, the first rolling element 41 may be disposed at the bottom of the positioning portion 12 of the base 10. For example... Figure 4 and Figure 5 As shown, in the two positioning plates 121 of the base 10, each positioning plate 121 is provided with two ball-type universal wheels 411 at intervals along the third direction.

[0058] In other embodiments, the movable element 40 includes a second rolling element 42 disposed on the side wall of the base portion 11 opposite to the support roller 311. The centering device 100 is movable via the second rolling element 42.

[0059] It should be understood that the second rolling element 42 can be constructed in any suitable form.

[0060] like Figure 1 As shown, the second rolling element 42 may include rollers 421 disposed on the side wall of the base portion 11 opposite to the support roller 311. The number of rollers 421 is at least two, and at least two rollers 421 are spaced apart from the base portion 11 along a first direction for movement of the centering device 100. Of course, the second rolling element 42 may also be constructed in other forms. For example, a caster wheel; this is not a limitation.

[0061] In some embodiments, the movable element 40 includes a first rolling element 41 disposed at the bottom of the base 10 and a second rolling element 42 disposed on the side wall of the base portion 11 opposite to the support roller 311. The first rolling element 41 is a ball-type caster 411, and the second rolling element 42 is a roller 421. Multiple rollers 421 are disposed at the bottom of the positioning plate 121. The second rolling element 42 includes rollers 421 disposed on the side wall of the base portion 11 opposite to the support roller 311, and the number of rollers 421 is at least two. When the centering device 100 is moved a short distance, the operator can move the centering device 100 using the ball-type caster 411 disposed at the bottom of the positioning plate 121. When the centering device 100 is moved a long distance, the rollers 421 disposed on the side wall of the base portion 11 opposite to the support roller 311 can be used to move the centering device 100.

[0062] It should be noted that, as Figure 3 As shown, the drive mechanism 20 may include a drive member 21 and a transmission assembly 22. The drive member 21 is driven to two support assemblies 31 through the transmission assembly 22. The drive member 21 can drive the two support assemblies 31 to move closer or further apart in a first direction through the transmission assembly 22.

[0063] The driving component 21 and the transmission assembly 22 can be disposed in different parts of the base 10 as needed. For example, in some embodiments, the driving component 21 is disposed in the connecting rod portion 13, and the transmission assembly 22 is disposed in the base portion 11 and the connecting rod portion 13. This arrangement allows the driving component 21 and the transmission assembly 22 to be more rationally distributed in the base portion 11 and the connecting rod portion 13.

[0064] In some other embodiments not shown, both the drive member 21 and the transmission assembly 22 are disposed on the base portion 11, which allows the drive member 21 and the transmission assembly 22 to be arranged more compactly.

[0065] It should be understood that the transmission assembly 22 can be constructed in any suitable form.

[0066] In some implementations, such as Figure 3 and Figure 4 As shown, the transmission assembly 22 includes a lead screw 221 extending along a first direction and two sliders 222. The lead screw 221 includes a first threaded section 2211 and a second threaded section 2212, with the first threaded section 2211 and the second threaded section 2212 having opposite rotation directions. The two sliders 222 are respectively threaded to the first threaded section 2211 and the second threaded section 2212. The two sliders 222 are respectively connected to two support assemblies 31. The driving member 21 is driven to the lead screw 221 so that the two support assemblies 31 can be moved closer or further apart through the two sliders 222.

[0067] In some embodiments, the base portion 11 includes a guide rail 111 extending along a first direction, and the support component 31 is slidably connected to the guide rail 111 via a guide member 14, which can be used to guide the movement of the support component 31 and make the movement of the support component 31 more stable.

[0068] In the above embodiments, the guide member 14 and the guide rail 111 can be slidably connected in any suitable form. For example, the guide member 14 is provided with a groove that cooperates with the guide rail 111, and the guide member 14 is slidably connected to the guide rail 111 through the groove.

[0069] In addition, the transmission assembly 22 also includes a drive sprocket 223, a chain 224 and a driven sprocket 225. The driven sprocket 225 is connected to the lead screw 221. The chain 224 is sleeved on the drive sprocket 223 and the driven sprocket 225. The drive sprocket 223 is rotatably mounted on the connecting rod portion 13. The drive member 21 includes a rocker arm 211 connected to the drive sprocket 223.

[0070] In the above embodiment, the drive sprocket 223 can be rotated by rocking the rocker arm 211. The drive sprocket 223 drives the driven sprocket 225 to rotate via the chain 224. The driven sprocket 225 drives the lead screw 221 to rotate. The lead screw 221 drives the two support components 31 to move closer or further apart via the nut that is threaded into the lead screw 221.

[0071] In addition, the drive sprocket 223 is rotatably mounted on the connecting rod portion 13, and the drive member 21 includes a rocker arm 211 connected to the drive sprocket 223. When using the centering device 100, the rocker arm 211 can be placed in a higher position, which is convenient for the operator to operate.

[0072] In some implementations, such as Figure 1 As shown, a handle 50 is provided at the end of the connecting rod 13 away from the base 11, which provides a grip for the staff and makes it easier for the staff to push and pull the centering device 100.

[0073] The following is a brief description of the usage process of the centering device 100. When the centering device 100 is used on the chassis dynamometer 60, the vehicle can be driven onto the chassis dynamometer 60, and the vehicle's wheels 200 can contact the hub 62 of the chassis dynamometer 60. The operator can first manually crank the rocker arm 211 to move the support rollers 311 of the two support components 31 away from each other. Then, the operator holds the handle 50 to tilt the centering device 100 so that the rollers 421 of the centering device 100 contact the ground or the platform of the chassis dynamometer 60, thereby moving the centering device 100 to the hub 62 where it contacts the wheel 200 to be centered, so that the wheel 200 to be centered is in a position where it is in contact with the hub 62. The centering device 100 is positioned between two limiting plates 71, and then the centering device 100 is moved by ball-bearing casters so that the central axis of the hub 62 is located on the first symmetry plane A of the centering device 100. Then, the operator manually cranks the rocker arm 211 so that the two support rollers 311 move closer to each other and at least one of the support rollers 311 contacts the wheel 200. Then the hub 62 is started to rotate, and the rocker arm 211 is continued to be cranked. The wheel 200 is clamped by the two support rollers 311 so that the wheel 200 and the hub 62 are longitudinally aligned, and the wheel 200 and the hub 62 are also laterally aligned.

[0074] The second aspect of this disclosure provides a chassis dynamometer 60, such as Figures 7 to 9 As shown, the chassis dynamometer 60 includes a frame 61 and a plurality of hubs 62 disposed on the frame 61. The frame 61 is detachably connected to a limiting assembly 70, which is used to position the centering device 100 as described in the first aspect of this disclosure relative to the frame 61 and / or at least one hub 62.

[0075] In the above-described embodiments, the positioning device 100 is positioned relative to the frame 61 and / or at least one hub 62 by the limiting component 70, so that the positioning device 100 can be moved more accurately to the position where the positioning device 100 is used to center the wheels 200 of the vehicle, thereby ensuring the accurate positioning of the wheels 200 of the vehicle by the subsequent positioning device 100.

[0076] It should be noted that the chassis dynamometer 60 can be of various types. For example, a chassis dynamometer 60 for measuring vehicle NVH (Noise, Vibration, Harshness) can be used, that is, the chassis dynamometer 60 can be used to detect vehicle noise, vibration and acoustic roughness.

[0077] In some embodiments, at least one hub 62 cooperates with a limiting assembly 70, which includes two limiting plates 71 spaced apart on a platform 61 along the longitudinal direction of the chassis dynamometer 60. The limiting plates 71 extend along the lateral direction of the chassis dynamometer 60, and the two limiting plates 71 are symmetrically arranged about a third symmetry plane C. A centering device 100 is inserted between the two limiting plates 71 in the lateral direction, and the centering device 100 contacts the two limiting plates 71 respectively, so that the second symmetry plane B of the two support rollers 311 of the centering device 100 coincides with the third symmetry plane C. The third symmetry plane C is a plane passing through the central axis of the hub 62 and parallel to the lateral direction of the chassis dynamometer 60, and the third symmetry plane C is perpendicular to the longitudinal direction.

[0078] In the above embodiment, the centering device 100 is positioned in the front-rear direction of the chassis dynamometer 60 by two limiting plates 71, so that the second symmetry plane B and the third symmetry plane C of the two support rollers 311 in the centering device 100 coincide, thereby completing the positioning of the centering device 100, so that the centering device 100 can achieve more accurate centering of the wheel 200 in the future.

[0079] It should be understood that the centering device 100 can center the wheels 200 of any one of the vehicles; of course, multiple centering devices 100 can also be used to center multiple vehicles separately. There is no limitation here.

[0080] In some embodiments, the stand 61 includes a floor groove 611 extending in a front-rear direction, on which a first mounting position 80 and a second mounting position 90 are provided, and one of two limiting plates 71 is detachably connected to the first mounting position 80 and the other is detachably connected to the second mounting position 90.

[0081] In the above embodiment, by pre-setting a first mounting position 80 and a second mounting position 90 on the floor groove 611 for the installation of the two limiting plates 71, the positioning and installation of the two limiting plates 71 can be facilitated, so as to achieve precise installation of the two limiting plates 71.

[0082] like Figures 7 to 9As shown, one of the two limiting plates 71 can be bolted to the first mounting position 80, and the other of the two limiting plates 71 can be bolted to the second mounting position 90. The threaded hole that mates with the bolt can be part of the floor groove 611 itself or a separately provided threaded hole; there are no specific restrictions.

[0083] The following combines 1 to... Figure 9 As shown, the process of centering the vehicle's wheels 200 using the centering device 100 and the limiting component 70 will be briefly described.

[0084] First, determine the wheel 200 of the vehicle that needs to be aligned and the hub 62 that needs to be aligned with the wheel 200. For example, the right front wheel of the vehicle and the hub 62 corresponding to the right front wheel can be aligned.

[0085] Drive the vehicle onto the hub 62 of the chassis dynamometer 60, ensuring that the vehicle's wheels 200 are in contact with the hub 62 of the chassis dynamometer 60, and put the vehicle into P gear. Use a car tie chain to initially restrain the vehicle, that is, to fasten the vehicle's crossbeams with a car tie chain. Two limiting plates 71 are installed such that the two limiting plates 71 are symmetrical about the third symmetry plane C. The third symmetry plane C is a plane passing through the center line of the hub 62 and parallel to the left-right direction of the chassis dynamometer 60, and the third symmetry plane C is perpendicular to the front-back direction. The distance between the two limiting plates 71 in the front-back direction of the chassis dynamometer 60 is the width of the centering device 100. Then the centering device 100 is moved between the two limiting plates 71, so that the two positioning plates 121 of the centering device 100 contact the two limiting plates 71 for positioning the centering device 100, so that the second symmetry plane B of the two support rollers 311 of the centering device 100 coincides with the third symmetry plane C of the two limiting plates 71. Loosen the chain and then rock the rocker arm 211 to bring the support rollers 311 of the centering device 100 closer together so that at least one of the two support rollers 311 contacts the wheel 200. Then the vehicle is put into neutral (N) gear, causing the hub 62 to rotate and the two support rollers 311 to move, thereby moving the wheels 200 to the highest point of the hub 62 to achieve longitudinal alignment. Since the wheelbases of the wheels 200 are equal, when the vehicle is longitudinally aligned with the corresponding wheel 200, the other wheels 200 are longitudinally aligned with the corresponding hub 62.

[0086] At the same time, as the two support rollers 311 of the centering device 100 approach each other, the wheel 200 gradually returns to center to complete the lateral centering of the wheel 200 and the hub 62. When the left front of the vehicle completes the longitudinal and lateral centering, the other wheels 200 of the wheel 200 will also complete the lateral and longitudinal centering.

[0087] After the vehicle is aligned, tighten the binding chain, open the support roller 311 of the alignment device 100, push out the alignment device 100, and remove the limit plate 71.

[0088] As can be seen from the above, the centering device 100 and the two limiting plates 71 enable the vehicle to be quickly and accurately centered on the chassis dynamometer 60, improving testing efficiency and safety. The limiting plates 71 and the supporting limiting rollers work together to ensure the accuracy of lateral and longitudinal centering and reduce human error. At the same time, the centering device 100 and the limiting plates 71 have a simple structure and low manufacturing and maintenance costs.

[0089] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0090] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0091] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A centering device, characterized in that, include: Matrix; The drive mechanism is mounted on the base. as well as The centering mechanism includes two support components movably disposed on the base. The drive mechanism is driven to connect the two support components to drive the two support components to move closer or further apart from each other in a first direction. Each support component includes a support roller whose position is adjustable in a second direction. The support roller extends along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other.

2. The centering device according to claim 1, characterized in that, The support assembly further includes a support frame movably connected to the base along the first direction, the support frame including at least two mounting structures positioned differently in the second direction, and the support roller selectively connected to one of the mounting structures.

3. The centering device according to claim 2, characterized in that, The mounting structure includes at least two mounting slots spaced apart in the support frame along a third direction, the support roller extending along the third direction and rotatably engaging with the at least two mounting slots.

4. The centering device according to claim 3, characterized in that, The support frame includes a base plate and at least two support plates spaced apart on the base plate along a third direction, and the at least two mounting slots of the mounting structure are correspondingly disposed on the at least two support plates.

5. The centering device according to claim 1, characterized in that, The base includes a base portion and a positioning portion. The centering mechanism is disposed on the base portion. The positioning portion is disposed at opposite ends of the base portion along the first direction. The two positioning portions are symmetrically disposed about a first symmetrical plane in the first direction. The two support rollers are symmetrically disposed about a second symmetrical plane in the first direction. The first symmetrical plane and the second symmetrical plane coincide.

6. The centering device according to claim 5, characterized in that, The positioning part includes a positioning plate extending in a third direction.

7. The centering device according to claim 1, characterized in that, The base includes a base portion and a connecting rod portion connected to the base portion and extending along or inclined to the second direction. The centering mechanism is disposed on the base portion, and the base portion is provided with a movable member that allows the centering device to move.

8. The centering device according to claim 7, characterized in that, The moving part includes a first rolling element disposed at the bottom of the base; and / or, The moving part includes a second rolling element disposed on the side wall of the base portion opposite to the support roller.

9. The centering device according to claim 7, characterized in that, The driving mechanism includes a driving component and a transmission assembly, and the driving component is drivenly connected to the two support assemblies through the transmission assembly; Wherein, the driving component is disposed on the connecting rod portion, and the transmission assembly is disposed on the base portion and the connecting rod portion; or... Both the driving component and the transmission assembly are mounted on the base portion.

10. The centering device according to claim 9, characterized in that, The transmission assembly includes a lead screw extending along the first direction and two sliders. The lead screw includes a first threaded section and a second threaded section, with the first threaded section and the second threaded section having opposite directions of rotation. The two sliders are respectively threaded to the first threaded section and the second threaded section, and the two sliders are respectively connected to the two support assemblies. The driving member is driven to the lead screw so as to drive the two support assemblies closer to or further away from each other through the two sliders.

11. The centering device according to claim 10, characterized in that, The transmission assembly further includes a drive sprocket, a chain, and a driven sprocket. The driven sprocket is connected to the lead screw. The chain is sleeved on the drive sprocket and the driven sprocket. The drive sprocket is rotatably mounted on the connecting rod. The driving component includes a rocker arm connected to the drive sprocket.

12. The centering device according to claim 10, characterized in that, The base portion includes a guide rail extending along the first direction, and the support component is slidably connected to the guide rail via a guide member.

13. The centering device according to claim 7, characterized in that, A handle is provided at the end of the connecting rod that is away from the base.

14. A chassis dynamometer, characterized in that, The chassis dynamometer includes a frame and a plurality of rotating hubs disposed on the frame. The frame is detachably connected to a limiting assembly, which is used to position the centering device according to any one of claims 1-13 relative to the frame and / or at least one of the rotating hubs.

15. The chassis dynamometer according to claim 14, characterized in that, At least one hub cooperates with the limiting assembly, the limiting assembly including two limiting plates spaced apart on the frame along the front-rear direction of the chassis dynamometer, the limiting plates extending along the left-right direction of the chassis dynamometer, the two limiting plates being symmetrical about a third symmetry plane, the centering device being inserted between the two limiting plates along the left-right direction, the centering device contacting the two limiting plates respectively, so that the second symmetry plane of the two supporting rollers of the centering device coincides with the third symmetry plane; The third symmetry plane is a plane passing through the central axis of the hub and parallel to the left-right direction of the chassis dynamometer, and the third symmetry plane is perpendicular to the front-back direction.

16. The chassis dynamometer according to claim 15, characterized in that, The platform includes a floor groove extending along the front-rear direction, and a first mounting position and a second mounting position are provided on the floor groove. One of the two limiting plates is detachably connected to the first mounting position, and the other is detachably connected to the second mounting position.

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