CN216051799U - All-wheel-drive commercial vehicle speedometer inspection bench system - Google Patents

Abstract

The utility model provides a speedometer inspection bench system of a full-drive commercial vehicle, belonging to the technical field of vehicle detection equipment. The full-drive commercial vehicle speedometer inspection bench system comprises a base, a first inspection bench assembly and a second inspection bench assembly. The base includes first installation cavity and second installation cavity. The first inspection bench assembly is arranged in the first installation cavity and comprises two first speed benches which are arranged at intervals along a first direction, and each first speed bench comprises a first bench, a plurality of first rollers and a first speed measurement sensor. The second inspection bench component is arranged in the second installation cavity and comprises a first slide rail, a sliding table and two second speed tables, each second speed table comprises a second table frame, a plurality of second rollers and a second speed measuring sensor, and two ends of each sliding table are connected with plate chain transmission devices used for bearing the car body. The system can be used for detecting the speedometer of the all-wheel-drive commercial vehicle with various different wheel bases, and effectively reduces the detection cost and the whole occupied space.

Description

All-wheel-drive commercial vehicle speedometer inspection bench system

Technical Field

The utility model relates to the technical field of automobile detection equipment, in particular to a speedometer inspection bench system of a full-drive commercial vehicle.

Background

The driving speed of an automobile is related to driving safety and transportation productivity, and in order to improve the transportation productivity of the automobile, the speed should be as high as possible while the performance of the automobile is exerted, and in order to accurately grasp the driving speed when the automobile is driven, a speedometer of the automobile needs to be checked when the automobile is subjected to a performance test. Therefore, the automobile detection line is an indispensable device for automobile detection and can be used for detecting various performances of automobiles. The automobile speedometer inspection bench is one of main devices in an automobile inspection line and is used for detecting the speedometer and the rotating speed of tires of an automobile.

In the related art, a speedometer of an automobile is tested when the automobile is subjected to a performance test, and a common speedometer test bench is a drum-type speedometer test bench and comprises a drum, a lifter, a speedometer, a display instrument, a driving device and other parts. The vehicle to be tested runs to the corresponding position of the speedometer inspection bench to enable the wheels to be matched with the roller, the roller on the inspection bench is driven to rotate by the wheels, the rotating speed of the wheels is calculated by measuring the rotating speed of the roller, and the rotating speed is verified with the indicating number of the speedometer.

For commercial vehicles using an all-wheel-drive system, a plurality of drive axles of the vehicle need to be tested synchronously to check the function of the transfer case. And commercial car product kind is more, often covers the multiple product that whole car length is 5 meters to 12 meters, to the all-wheel-drive commercial car of different wheel bases, often need set up multiple corresponding speedometer checkout stand and detect respectively, and inspection cost is high, and occupation space is big.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a speedometer inspection bench system of a full-drive commercial vehicle, which can be used for inspecting speedometers of various full-drive commercial vehicles with different wheelbases, and effectively reduces inspection cost and overall occupied space.

The technical scheme is as follows:

the utility model provides a speedometer checkout stand system of a full-drive commercial vehicle, which comprises:

a base including a first mounting cavity and a second mounting cavity, the first mounting cavity and the second mounting cavity being sequentially arranged along a first direction,

the first inspection table assembly is arranged in the first installation cavity and comprises two first speed tables, the two first speed tables are arranged at intervals along the first direction, each first speed table comprises a first table frame and a plurality of first rollers, the first rollers are rotatably arranged on the upper end face of the first table frame through first rotating shafts, the first rotating shafts are arranged along the second direction, the second direction is perpendicular to the first direction, and one end of each first rotating shaft is provided with a first speed measurement sensor for detecting the rotating speed of the first roller;

the second inspection bench subassembly sets up in the second installation cavity, the second inspection bench subassembly includes first slide rail, slip table and two second speed platforms, first slide rail is followed first direction is arranged, slip table slidable installs on the first slide rail, two second speed platforms are followed first direction interval arrangement be in on the slip table and with slip table fixed connection, the second speed platform includes second rack and a plurality of second cylinder, the second cylinder rotationally installs through the second pivot the up end of second rack, the second pivot is followed the second direction is arranged, the one end of second pivot is provided with and is used for detecting the second sensor that tests the speed of second cylinder rotational speed, the slip table is in both ends on the first direction are connected with the plate chain transmission who is used for bearing the automobile body.

Optionally, the spacing between the two first speed stages is adjustable.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a second slide rail, the second slide rail is arranged in the first installation cavity, the second slide rail is parallel to the first slide rail, and the two first speed benches are slidably installed on the second slide rail.

Optionally, the two first speed stages comprise a first limit speed stage distal from the second inspection stage assembly and a first compliant speed stage proximal to the second inspection stage assembly, the first limit speed stage comprising two of the first rollers, the number of the first rollers in the first compliant speed stage being greater than the number of the first rollers in the first limit speed stage; the two second speed stations include a second limit speed station proximate the first inspection station assembly and a second compliant speed station distal the first inspection station assembly, the second limit speed station including two of the second rollers, the number of the second rollers in the second compliant speed station being greater than the number of the second rollers in the second limit speed station.

Optionally, the diameter of the first roller in the first compatible speed stage is less than the diameter of the first roller in the first limit speed stage; the diameter of the second roller in the second compatible speed stage is less than the diameter of the second roller in the second limit speed stage.

Optionally, the system for the checking platform of the full-drive commercial vehicle speedometer further comprises a first lifting assembly and a second lifting assembly, the first lifting assembly is located inside the first rack of the first limit speed platform, the first lifting assembly comprises a first lifting device and a first lifting plate, the first lifting plate is connected with the first lifting device and located between the two first rollers, and the first lifting assembly is configured to be capable of driving the first lifting plate to lift in the vertical direction through the first lifting device; the second lifting assembly is located inside the second rack of the second limiting speed table and comprises a second lifting device and a second lifting plate, the second lifting plate is connected with the second lifting device and located between the two second rollers, and the second lifting assembly is configured to be capable of driving the second lifting plate to lift in the vertical direction through the second lifting device.

Optionally, first brake pads matched with the first roller are connected to two opposite sides of the first lifting device in the first direction, and the first brake pads are configured to be capable of being driven by the first lifting device to lift in the vertical direction to lock the first roller; the second lifting device is connected with second brake pads matched with the second roller on two opposite sides of the first direction, and the second brake pads are configured to be capable of being driven by the second lifting device to lift in the vertical direction so as to lock the second roller.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a first tire guide device and a second tire guide device, wherein the first tire guide device comprises two first tire guide wheels, the axes of the first tire guide wheels are arranged in the vertical direction, and the two first tire guide wheels are arranged on the first rack and are symmetrically arranged relative to the first lifting plate; the second tire guide device comprises two second tire guide wheels, the axes of the second tire guide wheels are arranged along the vertical direction, and the two second tire guide wheels are arranged on the second rack and are symmetrically arranged relative to the second lifting plate.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a horizontal oil cylinder, the horizontal oil cylinder is arranged at one end of the first sliding rail, and a push rod of the horizontal oil cylinder is connected with the sliding table.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a pneumatic band-type brake, the pneumatic band-type brake is arranged on the sliding table, and the sliding table is configured to be capable of being relatively locked with the first sliding rail through the pneumatic band-type brake.

The technical scheme provided by the embodiment of the utility model has the beneficial effects that at least:

when the speedometer of the commercial vehicle adopting the all-wheel-drive system needs to be detected, the vehicle uploads corresponding data such as a wheel base and the like to a detection line control system in a login room, and after receiving the data of the drive-by-wire system, the detection platform assembly of the speedometer of the commercial vehicle drives the sliding platform to slide along the length direction of the first sliding rail to drive the two second speed platforms to move in the first direction, so that the distance between the two first speed platforms and the two second speed platforms is adjusted to be matched with the wheel base of the vehicle to be detected. And then driving the vehicle to run to a speedometer inspection table system from one end of the base, wherein the vehicle sequentially passes through the plate chain transmission device at one side of the two second speed tables, which is far away from the first inspection table assembly, the two second speed tables and the plate chain transmission device between the two second speed tables and the first inspection table assembly in the running process until the vehicle runs to the first inspection table assembly, and the front wheels of the vehicle are matched with a plurality of first rollers in the first speed table, which is far away from the second inspection table assembly, in the two first speed tables. At this time, since the rear wheels of the vehicle are adjusted in advance according to the wheel base of the vehicle, the rear wheels of the vehicle are engaged with the plurality of second rollers of the second speed stage. After the driver starts the vehicle again, the first roller and the second roller can be driven to rotate through the rotation of the tires, the rotating speed of the front wheel of the vehicle is measured through the first speed measuring sensor located at one end of the first rotating shaft, and the rotating speed of the rear wheel of the vehicle is measured through the second speed measuring sensor located at one end of the second rotating shaft.

By providing two first speed tables in the first inspection table assembly, each of the first speed tables can detect a set of front wheels of the vehicle in the longitudinal direction of the vehicle, by providing two second speed tables in the second inspection table assembly, each of the second speed tables can detect a set of rear wheels of the vehicle in the longitudinal direction of the vehicle, and by adjusting the distance between the two second speed tables and the two first speed tables, the detection of the vehicle models of 6 drive types, i.e., 4 × 2, 4 × 4, 6 × 2, 6 × 4, 8 × 2, and 8 × 4, can be finally achieved. The one set of speedometer inspection platform system is adopted to be used for inspecting the speedometers of all-drive commercial vehicles with different wheel bases, and various speedometer inspection platforms corresponding to vehicle types do not need to be arranged to carry out detection respectively, so that the inspection cost and the whole occupied space are effectively reduced.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic front view structure diagram of a speedometer inspection bench system of a full-drive commercial vehicle provided by an embodiment of the utility model;

FIG. 2 is a schematic diagram of a top view structure of a speedometer inspection bench system of an all-drive commercial vehicle, provided by the embodiment of the utility model;

FIG. 3 is a schematic diagram of a first inspection station assembly according to an embodiment of the present invention;

fig. 4 is a schematic top view of a first limiting speed table according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a second inspection station assembly according to an embodiment of the present invention;

fig. 6 is a schematic top view of a second limiting speed table according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the related art, a speedometer of an automobile is tested when the automobile is subjected to a performance test, and a common speedometer test bench is a drum-type speedometer test bench and comprises a drum, a lifter, a speedometer, a display instrument, a driving device and other parts. The vehicle to be tested runs to the corresponding position of the speedometer inspection bench to enable the wheels to be matched with the roller, the roller on the inspection bench is driven to rotate by the wheels, the rotating speed of the wheels is calculated by measuring the rotating speed of the roller, and the rotating speed is verified with the indicating number of the speedometer.

For commercial vehicles using an all-wheel-drive system, two drive axles of the vehicle need to be tested synchronously to check the function of the transfer case. And commercial car product kind is more, often covers the multiple product that whole car length is 5 meters to 12 meters, to the all-wheel-drive commercial car of different wheel bases, often need set up multiple corresponding speedometer checkout stand and detect respectively, and inspection cost is high, and occupation space is big.

FIG. 1 is a schematic front view of a full-drive commercial vehicle speedometer checkout stand system according to an embodiment of the utility model. FIG. 2 is a schematic top view of a speedometer inspection bench system of an all-drive commercial vehicle according to an embodiment of the utility model. FIG. 3 is a schematic structural diagram of a first inspection station assembly according to an embodiment of the present invention. Fig. 4 is a schematic top view of a first limiting speed table according to an embodiment of the present invention. FIG. 5 is a schematic structural diagram of a second inspection station assembly according to an embodiment of the present invention. Fig. 6 is a schematic top view of a second limit speed table according to an embodiment of the present invention, as shown in fig. 1 to 6, and in practice, the applicant provides an all-wheel-drive commercial vehicle speedometer check table system, which includes a base 1, a first check table assembly 2 and a second check table assembly 3.

The base 1 includes a first mounting cavity 11 and a second mounting cavity 12, and the first mounting cavity 11 and the second mounting cavity 12 are sequentially arranged along a first direction.

The first inspection stage assembly 2 is disposed in the first mounting chamber 11, and the first inspection stage assembly 2 includes two first speed stages 21, the two first speed stages 21 being arranged at intervals in the first direction. The first speed stage 21 includes a first stage 211 and a plurality of first rollers 212, the first rollers 212 are rotatably mounted on an upper end surface of the first stage 211 by a first rotating shaft 23, the first rotating shaft 23 is arranged along a second direction, the second direction is perpendicular to the first direction, and one end of the first rotating shaft 23 is provided with a first speed sensor 231 for detecting a rotating speed of the first rollers 212.

The second inspection table assembly 3 is disposed in the second mounting cavity 12, the second inspection table assembly 3 includes a first slide rail 31, a slide table 32 and two second speed tables 33, the first slide rail 31 is disposed along the first direction, the slide table 32 is slidably mounted on the first slide rail 31, and the two second speed tables 33 are disposed on the slide table 32 at intervals along the first direction and are fixedly connected with the slide table 32. The second speed table 33 comprises a second table 331 and a plurality of second rollers 332, the second rollers 332 are rotatably mounted on the upper end surface of the second table 331 through second rotating shafts 333, the second rotating shafts 333 are arranged along the second direction, one end of each second rotating shaft 333 is provided with a second speed measuring sensor 3331 for detecting the rotating speed of the second roller 332, and two ends of the sliding table 32 in the first direction are connected with plate chain transmission devices 4 for bearing the vehicle body.

In the embodiment of the utility model, when the vehicle speedometer of the commercial vehicle adopting the all-wheel-drive system needs to be detected, the vehicle m uploads the corresponding data such as the wheel base and the like to the detection and control system in a login room, and after receiving the data of the drive-by-wire system, the detection platform assembly of the speedometer of the commercial vehicle drives the sliding platform 32 to slide along the length direction of the first sliding rail 31, so as to drive the two second speed platforms 33 to move in the first direction, and the distance between the two first speed platforms 21 and the two second speed platforms 33 is adjusted to be matched with the wheel base of the vehicle m to be detected. And then driving the vehicle m to run onto the speedometer inspection platform system from one end of the base 1, wherein the vehicle m sequentially passes through the plate chain transmission device 4 at one side of the two second speed platforms 33 far away from the first inspection platform assembly 2, the two second speed platforms 33 and the plate chain transmission device 4 between the two second speed platforms 33 and the first inspection platform assembly 2 in the running process until the vehicle m runs to the first inspection platform assembly 2, and the front wheels of the vehicle m are matched with the plurality of first rollers 212 in the first speed platform 21 far away from the second inspection platform assembly 3 in the two first speed platforms 21. At this time, since the rear wheel of the vehicle m is adjusted in advance in accordance with the wheel base of the vehicle m, the rear wheel of the vehicle m also engages with the plurality of second rollers 332 of the second speed stage 33. After the driver starts the vehicle m again, the first roller 212 and the second roller 332 are driven to rotate by the rotation of the tires, the rotating speed of the front wheel of the vehicle m is measured by the first speed measuring sensor 231 located at one end of the first rotating shaft 23, and the rotating speed of the rear wheel of the vehicle m is measured by the second speed measuring sensor 3331 located at one end of the second rotating shaft 333. By providing two first speed tables 21 in the first inspection table assembly 2, each first speed table 21 can detect a set of front wheels of the vehicle m in the longitudinal direction of the vehicle m, by providing two second speed tables 33 in the second inspection table assembly 3, each second speed table 33 can detect a set of rear wheels of the vehicle m in the longitudinal direction of the vehicle m, and by adjusting the distance between the two second speed tables 33 and the two first speed tables 21, the vehicle types of 6 drive types of 4 × 2, 4 × 4, 6 × 2, 6 × 4, 8 × 2, and 8 × 4 can be finally detected. The one set of speedometer inspection platform system is adopted to be used for inspecting the speedometers of all-drive commercial vehicles with different wheel bases, and various speedometer inspection platforms corresponding to vehicle types do not need to be arranged to carry out detection respectively, so that the inspection cost and the whole occupied space are effectively reduced.

Optionally, the spacing between the two first speed stages 21 is adjustable. For example, for a vehicle type in which the vehicle m has two sets of front wheels in the longitudinal direction, the wheel base between the two sets of front wheels may be different according to the size of the vehicle m. In the embodiment of the utility model, the two first speed tables 21 are arranged in a mode of adjustable distance, and the distance between the two first speed tables 21 is adjusted according to the wheelbase between the front wheels of a specific vehicle type, so that when a vehicle m runs onto the first inspection table assembly 2, two groups of front wheels can be accurately matched with the two first speed tables 21 respectively, and the practicability of the speedometer inspection table system of the full-drive commercial vehicle is further improved.

Optionally, the all-wheel-drive commercial vehicle speedometer check platform system further includes a second slide rail 213, the second slide rail 213 is disposed in the first mounting cavity 11, the second slide rail 213 is parallel to the first slide rail 31, and the two first speed platforms 21 are slidably mounted on the second slide rail 213. Illustratively, in the embodiment of the utility model, when a vehicle meter of a commercial vehicle adopting a full-drive system needs to be detected, the vehicle m uploads wheel base data corresponding to two groups of front wheels to a detection and control system in a login room, and after receiving the data of the drive-by-wire system, the vehicle meter and test bench assembly of the commercial vehicle drives two first speed benches 21 to slide on a second slide rail 213 so as to adjust to a target wheel base, so that when the vehicle m runs on a first test bench assembly 2, the two groups of front wheels can be accurately matched with the two first speed benches 21 respectively.

Illustratively, in the embodiment of the present invention, after the adjustment of the distance between the two first speed stages 21 is completed, the gap between the two first speed stages 21 is filled by providing the support stand 26 between the two first speed stages 21, so as to prevent the edges of the first stands 211 of the two first speed stages 21 from being crushed by the vehicle m during traveling as a support member when the vehicle m travels over the two first speed stages 21. Because in aforementioned 6 motorcycle types, the wheel base between two sets of front wheels is fixed relatively, can customize in advance the size of support rack 26 according to actual wheel base, conveniently in time cooperate the installation after the interval adjustment between two first speed platforms 21, improves detection efficiency.

Optionally, the two first speed stages 21 comprise a first limit speed stage 21a distant from the second inspection station assembly 3 and a first compatible speed stage 21b close to the second inspection station assembly 3, the first limit speed stage 21a comprising two first rollers 212, the number of first rollers 212 in the first compatible speed stage 21b being greater than the number of first rollers 212 in the first limit speed stage 21 a; the two second speed stages 33 include a second limit speed stage 33a close to the first inspection stage assembly 2 and a second compatible speed stage 33b far from the first inspection stage assembly 2, the second limit speed stage 33a includes two second rollers 332, and the number of the second rollers 332 in the second compatible speed stage 33b is greater than the number of the second rollers 332 in the second limit speed stage 33 a. For example, in the embodiment of the present invention, after the vehicle m travels to the first inspection platform assembly 2, if the vehicle m to be tested is of a vehicle type including two sets of front wheels, after the first set of front wheels of the vehicle m travels to the first limit speed platform 21a, the tire is in tangential fit with the two first rollers 212 to complete positioning. The second group of front tires of the vehicle m can be matched with any two first rollers 212 in the plurality of first rollers 212 on the first compatible speed platform 21b in a tangent way so as to adapt to different wheelbases between two groups of front wheels in different vehicle types; correspondingly, if the vehicle m to be tested is of a vehicle type including two groups of rear wheels, after the first group of rear wheels of the vehicle m runs to the second limiting speed table 33a, the tire is in tangential fit with the two second rollers 332 to complete positioning. And the second set of rear tires of the vehicle m may be tangentially fitted to any two second rollers 332 of the plurality of second rollers 332 on the second compatible speed stage 33b to accommodate different wheel bases between the two sets of rear wheels in different vehicle types. The practicability of the speedometer check bench system of the full-drive commercial vehicle is further improved.

Optionally, the diameter of the first roller 212 in the first compatible speed stage 21b is smaller than the diameter of the first roller 212 in the first limit speed stage 21 a; the diameter of the second roller 332 in the second compatible speed stage 33b is smaller than the diameter of the second roller 332 in the second limiting speed stage 33 a. Illustratively, in the embodiment of the present invention, since the first compatible speed table 21b and the second limiting speed table 33a do not play a role in positioning the wheels, the first roller 212 and the second roller 332 contact the tire in a point contact manner, and the wheel base between the two sets of front wheels is relatively fixed, the diameter of the first roller 212 in the first compatible speed table 21b is set to be smaller than the diameter of the first roller 212 in the first limiting speed table 21a, so that the effects of driving along the wheels to detect the wheel speed and adapting to the wheel base between the front wheels of different sets can be achieved, and at the same time, the overall size of the first compatible speed table 21b in the first direction can be reduced, and the overall occupied space of the inspection table system of the full-drive commercial vehicle speedometer can be further reduced.

For example, the principle of setting the diameter of the second roller 332 in the second compatible speed stage 33b to be smaller than the diameter of the second roller 332 in the second limiting speed stage 33a is the same as that of the first compatible speed stage 21b, and the description of the present invention is omitted here.

Illustratively, in the utility model embodiment, the first inspection bench assembly 2 can be compatible with vehicle models with a front wheel base range of 1.8m-2 m; the second inspection bench component 3 is compatible with the vehicle model with the rear wheel base of 1.3 m-1.6.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a first lifting assembly 24 and a second lifting assembly 34, the first lifting assembly 24 is located inside the first rack 211 of the first limit speed table 21a, the first lifting assembly 24 comprises a first lifting device 241 and a first lifting plate 242, the first lifting plate 242 is connected with the first lifting device 241 and located between the two first rollers 212, and the first lifting assembly 24 is configured to be capable of driving the first lifting plate 242 to lift in the vertical direction through the first lifting device 241; the second lifting assembly 34 is located inside the second stage 331 of the second limit speed stage 33a, the second lifting assembly 34 includes a second lifting device 341 and a second lifting plate 342, the second lifting plate 342 is connected to the second lifting device 341 and located between the two second rollers 332, and the second lifting assembly 34 is configured to be capable of driving the second lifting plate 342 to lift in a vertical direction by the second lifting device 341. For example, in the embodiment of the present invention, after the vehicle m travels to the first inspection platform assembly 2 and the front wheel of the vehicle m travels to the first limit speed platform 21a, the first lifting assembly 24 is in a lifted state, the front wheel of the vehicle m first presses on the first lifting plate 242, and then the first lifting device 241 drives the first lifting plate 242 to descend, so that the front wheel of the vehicle m descends a certain distance to tangentially cooperate with the two first rollers 212 to complete the positioning. Accordingly, after the rear wheel of the vehicle m travels to the second limit speed table 33a, the second lifting assembly 34 is in a lifted state, the rear wheel of the vehicle m is firstly pressed on the second lifting plate 342, and then the first lifting plate 342 is driven to descend by the second lifting device 341, so that the rear wheel of the vehicle m descends a certain distance to be in tangential fit with the two second rollers 332 to complete positioning. Therefore, when the vehicle m is of a vehicle type with two groups of front wheels and/or two groups of rear wheels, the first group of front wheels and the first group of rear wheels of the vehicle m are limited in the first direction, the vehicle m is prevented from moving back and forth during testing, and the detection stability of the speedometer check table system of the all-wheel-drive commercial vehicle is further improved.

Optionally, the first lifting device 241 is provided with first brake pads 243 matched with the first roller 212 at two opposite sides in the first direction, and the first brake pads 243 are configured to be capable of being driven by the first lifting device 241 to lift in the vertical direction to lock the first roller 212; the second lifting device 341 is connected to and provided with second brake pads 343 matched with the second roller 332 at two opposite sides in the first direction, and the second brake pads 343 are configured to be capable of being lifted in the vertical direction by the second lifting device 341 to lock the second roller 332. For example, in the embodiment of the present invention, the first speed limit table 21a is taken as an example for description. When the wheel of the vehicle m just runs to the first limiting speed table 21a or the rotation speed of the wheel is detected, the first lifting plate 242 is driven by the first lifting device 241 to ascend to jack the wheel, the first lifting assembly 24 is wholly in a lifting state, meanwhile, the first brake pads 243 on two sides of the first lifting device 241 ascend together and press the two first rollers 212 against each other to lock the first rollers 212, the detection result of the rotation speed of the wheel is prevented from being influenced by the rotation of the first rollers 212 when the first rollers are not in contact with the wheel, and the detection accuracy of the speedometer inspection table system of the full-drive commercial vehicle is further improved.

Illustratively, in the embodiment of the present invention, the function of the second brake pad 343 in the second test stand assembly 3 is the same as the function of the first brake pad 243 in the first test stand assembly 2, and the detailed description thereof is omitted.

Optionally, the all-wheel-drive commercial vehicle speedometer check platform system further comprises a first tire guiding device 25 and a second tire guiding device 35, wherein the first tire guiding device 25 comprises two first tire guiding wheels 251, the axes of the first tire guiding wheels 251 are arranged along the vertical direction, and the two first tire guiding wheels 251 are arranged on the first rack 211 and are symmetrically arranged relative to the first lifting plate 242; the second tire guiding device 35 includes two second tire guiding wheels 351, axes of the second tire guiding wheels 351 are arranged in a vertical direction, and the two second tire guiding wheels 351 are provided on the second stage 331 and are symmetrically arranged with respect to the second lifting plate 342. Exemplarily, in the embodiment of the present invention, two first tire guide wheels 251 are disposed on two opposite sides of two first rollers 212 in the first direction, the two first tire guide wheels 251 can be respectively in contact with a tire side end surface of a front wheel of the vehicle m, two second tire guide wheels 351 are disposed on two opposite sides of two second rollers 332 in the first direction, and the two second tire guide wheels 351 can be respectively in contact with a tire side end surface of a rear wheel of the vehicle m, so that the vehicle m is limited and guided in the first direction, the vehicle m is prevented from shaking in the second direction during the detection process, and the detection stability of the all-drive commercial vehicle speedometer inspection bench system is further improved.

Optionally, the all-drive commercial vehicle speedometer inspection bench system further comprises a horizontal oil cylinder 36, the horizontal oil cylinder 36 is arranged at one end of the first slide rail 31, and a push rod of the horizontal oil cylinder 36 is connected with the sliding table 32. Illustratively, in a possible implementation example, the horizontal oil cylinder 36 is used for receiving a signal instruction of a linear control system, and the push rod pushes the sliding table 32 to slide on the first sliding rail 31, so that the adaptive adjustment corresponding to the m-axle distance of the vehicle is realized, the structure is simple, and the control is convenient.

Optionally, the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a pneumatic internal contracting brake 37, the pneumatic internal contracting brake 37 is arranged on the sliding table 32, and the sliding table 32 is configured to be capable of keeping relative locking with the first sliding rail 31 through the pneumatic internal contracting brake 37. For example, in the embodiment of the present invention, after the position of the sliding table 32 on the first sliding rail 31 is adjusted, the sliding table 32 may be locked and fixed with the first sliding rail 31 by the pneumatic band-type brake 37, and the sliding table 32 slides relative to the first sliding rail 31 due to vibration generated during speed measurement detection, so as to further improve the detection stability of the platform system for checking a speedometer of a full-drive commercial vehicle.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, which may also change accordingly when the absolute position of the object being described changes.

The utility model is not to be considered as limited to the particular embodiments shown and described, but is to be understood that various modifications, equivalents, improvements and the like can be made without departing from the spirit and scope of the utility model.

Claims (10)

1. The utility model provides a full drive commercial car speedometer checkout stand system which characterized in that includes:

the base (1), the base (1) comprises a first mounting cavity (11) and a second mounting cavity (12), the first mounting cavity (11) and the second mounting cavity (12) are sequentially arranged along a first direction,

a first inspection table assembly (2) disposed in the first mounting cavity (11), the first inspection table assembly (2) including two first speed tables (21), the two first speed tables (21) being spaced apart in the first direction, the first speed tables (21) including a first stage (211) and a plurality of first rollers (212), the first rollers (212) being rotatably mounted on an upper end surface of the first stage (211) by a first rotating shaft (23), the first rotating shaft (23) being disposed in a second direction, the second direction being perpendicular to the first direction, one end of the first rotating shaft (23) being provided with a first speed measuring sensor (231) for detecting a rotating speed of the first rollers (212);

a second inspection table component (3) disposed in the second installation cavity (12), wherein the second inspection table component (3) comprises a first slide rail (31), a sliding table (32) and two second speed tables (33), the first slide rail (31) is arranged along the first direction, the sliding table (32) is slidably mounted on the first slide rail (31), the two second speed tables (33) are arranged along the first direction at intervals on the sliding table (32) and fixedly connected with the sliding table (32), the second speed table (33) comprises a second table frame (331) and a plurality of second rollers (332), the second rollers (332) are rotatably mounted on the upper end face of the second table frame (331) through second rotating shafts (333), the second rotating shafts (333) are arranged along the second direction, one end of each second rotating shaft (333) is provided with a second sensor (3331) for detecting the rotating speed of the second rollers (332), and two ends of the sliding table (32) in the first direction are connected with plate chain transmission devices (4) for bearing a vehicle body.

2. An all-drive commercial vehicle speedometer checkout stand system according to claim 1, characterised in that the spacing between the two first speed stands (21) is adjustable.

3. The all-wheel-drive commercial vehicle speedometer check bench system according to claim 2, characterized in that the all-wheel-drive commercial vehicle speedometer check bench system further comprises a second slide rail (213), the second slide rail (213) is arranged in the first mounting cavity (11), the second slide rail (213) is parallel to the first slide rail (31), and the two first speed benches (21) are slidably mounted on the second slide rail (213).

4. The all-drive commercial vehicle speedometer check stand system according to claim 1, characterized in that the two first speed stands (21) comprise a first limit speed stand (21a) far from the second check stand assembly (3) and a first compatible speed stand (21b) close to the second check stand assembly (3), the first limit speed stand (21a) comprises two first rollers (212), and the number of the first rollers (212) in the first compatible speed stand (21b) is larger than the number of the first rollers (212) in the first limit speed stand (21 a); the two second speed stations (33) comprise a second limit speed station (33a) close to the first inspection station assembly (2) and a second compatible speed station (33b) far from the first inspection station assembly (2), the second limit speed station (33a) comprises two second rollers (332), and the number of the second rollers (332) in the second compatible speed station (33b) is larger than the number of the second rollers (332) in the second limit speed station (33 a).

5. The all-drive commercial vehicle speedometer check stand system according to claim 4, characterized in that the diameter of the first roller (212) in the first compatible speed stand (21b) is smaller than the diameter of the first roller (212) in the first limit speed stand (21 a); the diameter of the second roller (332) in the second compatible speed stage (33b) is smaller than the diameter of the second roller (332) in the second limiting speed stage (33 a).

6. The all-wheel-drive commercial vehicle speedometer checkout stand system according to claim 4, characterized in that the all-wheel-drive commercial vehicle speedometer checkout stand system further comprises a first lifting assembly (24) and a second lifting assembly (34), the first lifting assembly (24) is located inside the first stand (211) of the first limit speed station (21a), the first lifting assembly (24) comprises a first lifting device (241) and a first lifting plate (242), the first lifting plate (242) is connected with the first lifting device (241) and located between the two first rollers (212), and the first lifting assembly (24) is configured to drive the first lifting plate (242) to lift and lower in a vertical direction through the first lifting device (241); the second lifting assembly (34) is located inside the second table frame (331) of the second limit speed table (33a), the second lifting assembly (34) comprises a second lifting device (341) and a second lifting plate (342), the second lifting plate (342) is connected with the second lifting device (341) and located between the two second rollers (332), and the second lifting assembly (34) is configured to be capable of driving the second lifting plate (342) to lift in the vertical direction through the second lifting device (341).

7. The all-wheel-drive commercial vehicle speedometer checkout stand system according to claim 6, wherein the first lifting device (241) is connected with a first brake pad (243) matched with the first roller (212) at two opposite sides in the first direction, and the first brake pad (243) is configured to be lifted in a vertical direction under the driving of the first lifting device (241) to lock the first roller (212); the second lifting device (341) is connected with a second brake pad (343) matched with the second roller (332) at two opposite sides of the first direction, and the second brake pad (343) is configured to be capable of being driven by the second lifting device (341) to lift in the vertical direction to lock the second roller (332).

8. The all-wheel-drive commercial vehicle speedometer check bench system according to claim 6, characterized in that the all-wheel-drive commercial vehicle speedometer check bench system further comprises a first tire guide device (25) and a second tire guide device (35), the first tire guide device (25) comprises two first tire guide wheels (251), the axes of the first tire guide wheels (251) are arranged along a vertical direction, the two first tire guide wheels (251) are arranged on the first rack (211) and are symmetrically arranged relative to the first lifting plate (242); the second tire guide device (35) includes two second tire guide wheels (351), axes of the second tire guide wheels (351) are arranged in a vertical direction, and the two second tire guide wheels (351) are provided on the second stage (331) and are symmetrically arranged with respect to the second lifting plate (342).

9. The all-wheel-drive commercial vehicle speedometer checkout stand system according to any one of claims 1 to 7, characterized in that the all-wheel-drive commercial vehicle speedometer checkout stand system further comprises a horizontal oil cylinder (36), the horizontal oil cylinder (36) is arranged at one end of the first slide rail (31), and a push rod of the horizontal oil cylinder (36) is connected with the sliding table (32).

10. The all-wheel-drive commercial vehicle speedometer inspection bench system according to any one of claims 1 to 7, characterized in that the all-wheel-drive commercial vehicle speedometer inspection bench system further comprises a pneumatic brake (37), the pneumatic brake (37) is arranged on the sliding table (32), and the sliding table (32) is configured to be capable of keeping relative locking with the first sliding rail (31) through the pneumatic brake (37).

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