Chassis dynamometer with variable inertia

Abstract

The utility model belongs to the technical field of whole vehicle data acquisition, and particularly relates to a variable inertia chassis dynamometer, which comprises a bottom rod and a baffle plate, the baffle plate is fixedly connected to the upper side of the bottom rod, the left end and the right end of the lower side of the bottom rod are fixedly connected with universal wheels, and the upper end of the bottom rod is connected with an acquisition mechanism. When the chassis dynamometer with the variable inertia is used, a rotating handle is rotated to drive a threaded rod to rotate in a threaded hole, so that the threaded rod moves relative to a bottom rod and drives a supporting plate at the lower end to move to make contact with the ground, the whole device is supported and fixed, and then an output shaft of a motor is started to rotate to drive a gear at the right end to rotate; the gear rotates along the upper end of the toothed bar and moves at the same time, so that the motor and the moving rod at the lower end of the motor are driven to move together, and the infrared distance measuring sensor at the upper end of the moving rod passes through the lower portion of the automobile chassis to detect the distance between each automobile part in the chassis and the ground.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle data collection, in particular to a chassis dynamometer with variable inertia. Background Art

[0002] When collecting benchmarking data, the ground height of the vehicle's chassis components needs to be measured.

[0003] The traditional measurement method is to measure manually while lying on the ground, which is difficult, inefficient and cannot achieve automated measurement.

[0004] For example, a variable inertia automobile chassis dynamometer disclosed in Chinese patent CN218628146U can comprehensively measure the automobile chassis, automatically detect the chassis ground clearance through an infrared ranging sensor, and detect the ground clearance of various parts. At the same time, the wavy track increases the lateral detection range, making the detection more comprehensive, and the structure is simple and easy to use.

[0005] However, the chassis dynamometer can only detect the upper part of the automobile chassis. When other parts of the automobile chassis need to be detected, the position of the started automobile must be adjusted, which is very inconvenient.

[0006] For this reason, we urgently need to provide a chassis dynamometer with variable inertia that is convenient for rapid detection of automobile chassis. Utility Model Content

[0007] The purpose of the utility model is to provide a chassis dynamometer with variable inertia, so as to solve the problem in the above-mentioned background technology that the chassis dynamometer can only detect the upper part of the automobile chassis, and when other parts of the automobile chassis need to be detected, the position of the started automobile must be adjusted, which is very inconvenient.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a chassis dynamometer with variable inertia, comprising a bottom bar and a baffle, wherein the baffle is fixedly connected to the upper side of the bottom bar, and universal wheels are fixedly connected to the left and right ends of the lower side of the bottom bar, and a collection mechanism is connected to the upper end of the bottom bar, wherein the collection mechanism comprises a collection unit and a fixing unit, wherein the collection unit is arranged at the upper end of the bottom bar, and the fixing unit is arranged at the upper and lower ends of the bottom bar.

[0009] The acquisition unit includes a limit frame, a moving rod, an infrared ranging sensor, a motor, a transmission member, a fixed block, a spring, an insertion rod and a fixed frame. The limit frame is symmetrically fixedly connected to the left and right ends of the adjacent side of the baffle at the front and rear ends, the moving rod is connected to the inside of the limit frame, the infrared ranging sensor is fixedly connected to the upper side of the moving rod, the motor is fixedly connected to the upper right end of the moving rod, the transmission member is connected to the right end of the motor, the fixed block is fixedly connected to the middle position of the front and rear ends of the limit frame away from the moving rod, the spring is connected to the inside of the fixed block, the insertion rod is fixedly connected to the upper end of the spring, and the fixed frame is connected to the outer end of the fixed block.

[0010] A further improvement is that the outer sides of the left and right ends of the moving rod are slidably connected to the inner side of the limiting frame, so that when the moving rod moves, its left and right ends will slide inside the limiting frame.

[0011] A further improvement is that a circular groove is provided at the upper end of the inner middle position of the fixed block, the lower end of the spring is fixedly connected to the inner bottom end of the circular groove, and the outer side of the insertion rod is slidably connected to the inner side of the circular groove, so that when the spring bounces, the insertion rod can be driven to slide along the inner side of the circular groove.

[0012] A further improvement is that holes are provided at the left and right ends of the upper interior of the fixed frame, the outer side of the fixed block is slidably connected to the inner side of the fixed frame, and the outer side of the upper end of the insertion rod is plugged into the inner side of the hole, so that the insertion rod is pushed up by the spring rebound, and the upper end of the insertion rod is pushed to the inner side of the hole at the upper end of the fixed frame, so that the fixed frame can be fixed to the outer side of the fixed block, so that the two contacting fixed blocks are relatively fixed.

[0013] A further improvement is that the fixing unit comprises a threaded rod, a rotating handle and a support plate, the threaded rod is connected to the inside of the bottom rod, the rotating handle is fixedly connected to the upper end of the threaded rod, and the support plate is fixedly connected to the lower end of the threaded rod.

[0014] A further improvement is that a threaded hole is opened in the middle position of the inner part of the bottom rod, and the outer side of the threaded rod is threadedly connected to the inner side of the threaded hole, so that when the rotating handle is turned to drive the threaded rod in the threaded hole to rotate, the threaded rod can move relative to the bottom rod.

[0015] A further improvement is that a rubber pad is fixedly connected to the lower side of the support plate, so that when the support plate is moved to contact the ground, the rubber pad at its lower end will contact the ground, which can make the device supported and fixed more firmly.

[0016] In summary, the present application discloses a chassis dynamometer with variable inertia.

[0017] The technical solution connects two limit frames, and after the fixed blocks on the outsides of the two limit frames are in contact, the insertion rod is pressed down to the inside of the circular groove, and then the fixed frame is slid to the outside of the two contacting fixed blocks. The spring then rebounds and pushes the insertion rod upward to push the upper end of the insertion rod to the inside of the insertion hole at the upper end of the fixed frame. The fixed frame can be fixed to the outside of the fixed block, so that the two contacting fixed blocks are relatively fixed, and the two adjacent limit frames can be relatively fixed, so that the required number of limit frames can be fixed between the two baffles, and the device can be adjusted to the required length as a whole, so as to detect the entire automobile chassis of different lengths.

[0018] Furthermore, by turning the rotating handle to drive the threaded rod in the threaded hole to rotate, the threaded rod can move relative to the bottom rod, thereby driving the support plate at the lower end to move together, so that the support plate can be moved to contact the ground, and the entire device is supported and fixed, thereby facilitating the device to be moved to different detection positions and then fixed again. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the limit frame of the utility model;

[0021] Figure 3 This is a structural schematic diagram of the fixed block of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the fixing unit of the utility model.

[0023] In the figure: 1, bottom rod; 2, baffle; 3, universal wheel; 401, limit frame; 402, moving rod; 403, infrared ranging sensor; 404, motor; 405, transmission part; 406, fixed block; 407, spring; 408, plug rod; 409, fixed frame; 501, threaded rod; 502, rotating handle; 503, support plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-Figure 4 , the utility model provides a technical solution: Embodiment 1

[0026] A chassis dynamometer with variable inertia comprises a bottom bar 1 and a baffle 2, wherein the baffle 2 is fixedly connected to the upper side of the bottom bar 1, and universal wheels 3 are fixedly connected to the left and right ends of the lower side of the bottom bar 1. The upper end of the bottom bar 1 is connected to a collection mechanism, and the collection mechanism comprises a collection unit and a fixing unit. The collection unit is arranged at the upper end of the bottom bar 1, and the fixing unit is arranged at the upper and lower ends of the bottom bar 1.

[0027] The acquisition unit includes a limit frame 401, a moving rod 402, an infrared distance sensor 403, a motor 404, a transmission member 405, a fixed block 406, a spring 407, an insertion rod 408 and a fixed frame 409. The limit frame 401 is symmetrically fixedly connected to the left and right ends of the adjacent side of the baffle 2 at the front and rear ends, and the moving rod 402 is connected to the inside of the limit frame 401. The outer sides of the left and right ends of the moving rod 402 are slidably connected to the inner side of the limit frame 401. Therefore, when the moving rod 402 moves, its left and right ends will slide inside the limit frame 401, thereby limiting the movement of the limit frame 401.

[0028] The infrared distance sensor 403 is fixedly connected to the upper side of the moving rod 402, the motor 404 is fixedly connected to the upper right end of the moving rod 402, the transmission member 405 is connected to the right end of the motor 404, the fixed block 406 is fixedly connected to the middle position of the front and rear ends of the limit frame 401 away from the moving rod 402, the spring 407 is connected to the inside of the fixed block 406, the plug 408 is fixedly connected to the upper end of the spring 407, and the fixed frame 409 is connected to the outer end of the fixed block 406. A circular groove is provided at the upper end of the inner middle position of the fixed block 406, the lower end of the spring 407 is fixedly connected to the inner bottom end of the circular groove, and the outer side of the plug 408 is slidably connected to the inner side of the circular groove. Therefore, when the spring 407 bounces, it can drive the plug 408 to slide along the inner side of the circular groove, thereby limiting the movement of the plug 408.

[0029] The transmission member 405 includes a gear and a toothed rod. The gear is fixedly connected to the right end of the output shaft of the motor 404, and the toothed rod is fixedly connected to the upper right end of the limit frame 401 at the right end. The outer side of the gear is meshed with the upper end of the toothed rod. Therefore, after the device is moved under the chassis of the car, when the motor 404 is started and its output shaft rotates to drive the gear at the right end to rotate, the gear will move while rotating along the upper end of the toothed rod, thereby driving the motor 404 and the moving rod 402 at its lower end to move together, so that the infrared ranging sensor 403 at the upper end of the moving rod 402 will pass under the chassis of the car to detect the distance between each car part in the chassis and the ground.

[0030] Insertion holes are provided at the left and right ends of the upper interior of the fixed frame 409, the outer side of the fixed block 406 is slidably connected to the inner side of the fixed frame 409, and the outer side of the upper end of the insertion rod 408 is plugged into the inner side of the insertion hole. Therefore, after the two limit frames 401 are connected and the fixed blocks 406 on the outsides of the two limit frames 401 are in contact, the insertion rod 408 is pressed down to the inside of the circular groove, and then the fixed frame 409 is slid to the outside of the two contacting fixed blocks 406, and then the spring 407 rebounds and pushes the insertion rod 408, pushing the upper end of the insertion rod 408 to the inside of the insertion hole at the upper end of the fixed frame 409, so that the fixed frame 409 can be fixed to the outside of the fixed block 406, so that the two contacting fixed blocks 406 are relatively fixed, and the two adjacent limit frames 401 can be relatively fixed, so that the required number of limit frames 401 can be fixed between the two baffles 2, so that the device as a whole can be adjusted to the required length, so as to detect automobile chassis of different lengths. Embodiment 2

[0031] On the basis of the first embodiment: the fixing unit includes a threaded rod 501, a rotating handle 502 and a support plate 503, the threaded rod 501 is connected to the inside of the bottom rod 1, the rotating handle 502 is fixedly connected to the upper end of the threaded rod 501, and the support plate 503 is fixedly connected to the lower end of the threaded rod 501. A threaded hole is provided in the middle position of the inside of the bottom rod 1, and the outer side of the threaded rod 501 is threadedly connected to the inner side of the threaded hole. Therefore, when the rotating handle 502 is rotated to drive the threaded rod 501 located in the threaded hole to rotate, the threaded rod 501 can be moved relative to the bottom rod 1, thereby driving the support plate 503 at the lower end to move together, so as to facilitate the support plate 503 to be moved to contact the ground, and the device as a whole is supported and fixed, so as to facilitate the device to be moved to different detection positions and then fixed again.

[0032] A rubber pad is fixedly connected to the lower side of the support plate 503. Therefore, when the support plate 503 is moved to contact the ground, the rubber pad at the lower end thereof will contact the ground, so that the device can be supported and fixed more firmly.

[0033] Working principle: When in use, first push the device as a whole, and move the device as a whole under the car by rotating the universal wheel 3 at the bottom, then turn the rotating handle 502 to drive the threaded rod 501 in the threaded hole to rotate, so that the threaded rod 501 moves relative to the bottom rod 1, and drives the support plate 503 at the lower end to move to contact the ground, so as to support and fix the device as a whole, and then start the motor 404 and its output shaft to rotate to drive the gear at the right end to rotate, and the gear will move while rotating along the upper end of the gear rod, thereby driving the motor 404 and the moving rod 402 at its lower end to move together, so that the infrared ranging sensor 403 at the upper end of the moving rod 402 passes under the car chassis, and detects the distance between each car part in the chassis and the ground.

[0034] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A chassis dynamometer with variable inertia, comprising a bottom bar (1) and a baffle (2), wherein the baffle (2) is fixedly connected to the upper side of the bottom bar (1), characterized in that: Universal wheels (3) are fixedly connected to the left and right ends of the lower side of the bottom rod (1), and a collection mechanism is connected to the upper end of the bottom rod (1), wherein the collection mechanism comprises a collection unit and a fixing unit, wherein the collection unit is arranged at the upper end of the bottom rod (1), and the fixing unit is arranged at the upper and lower ends of the bottom rod (1); The acquisition unit comprises a limit frame (401), a moving rod (402), an infrared distance measuring sensor (403), a motor (404), a transmission member (405), a fixed block (406), a spring (407), an insertion rod (408) and a fixed frame (409); the limit frame (401) is symmetrically fixedly connected to the left and right ends of the adjacent side of the baffle (2) at the front and rear ends; the moving rod (402) is connected to the inside of the limit frame (401); and the infrared distance measuring sensor (403) is fixedly connected to the moving rod (409). 02), the motor (404) is fixedly connected to the upper right end of the moving rod (402), the transmission member (405) is connected to the right end of the motor (404), the fixed block (406) is fixedly connected to the middle position of the front and rear ends of the limit frame (401) away from the moving rod (402), the spring (407) is connected to the inside of the fixed block (406), the insertion rod (408) is fixedly connected to the upper end of the spring (407), and the fixed frame (409) is connected to the outer end of the fixed block (406).

2. A variable inertia chassis dynamometer according to claim 1, characterized in that: The outer sides of the left and right ends of the moving rod (402) are slidably connected to the inner side of the limiting frame (401).

3. A variable inertia chassis dynamometer according to claim 1, characterized in that: A circular groove is provided at the upper middle end of the fixed block (406), the lower end of the spring (407) is fixedly connected to the inner bottom end of the circular groove, and the outer side of the insertion rod (408) is slidably connected to the inner side of the circular groove.

4. A variable inertia chassis dynamometer according to claim 1, characterized in that: Insertion holes are provided at the left and right ends of the upper interior of the fixing frame (409); the outer side of the fixing block (406) is slidably connected to the inner side of the fixing frame (409); and the outer side of the upper end of the insertion rod (408) is inserted into the inner side of the insertion hole.

5. The variable inertia chassis dynamometer according to claim 1, characterized in that: The fixing unit comprises a threaded rod (501), a rotating handle (502) and a support plate (503); the threaded rod (501) is connected to the inside of the bottom rod (1); the rotating handle (502) is fixedly connected to the upper end of the threaded rod (501); and the support plate (503) is fixedly connected to the lower end of the threaded rod (501).

6. A variable inertia chassis dynamometer according to claim 5, characterized in that: A threaded hole is provided at the middle position inside the bottom rod (1), and the outer side of the threaded rod (501) is threadedly connected to the inner side of the threaded hole.

7. A variable inertia chassis dynamometer according to claim 5, characterized in that: A rubber pad is fixedly connected to the lower side of the support plate (503).

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