Vehicle centering device for chassis dynamometer

Abstract

The utility model belongs to the technical field of vehicle detection, and particularly relates to a vehicle centering device for a chassis dynamometer, which comprises a chassis dynamometer and a fixed bottom plate, the fixed bottom plate is fixedly mounted on the bottom surface of the chassis dynamometer, a square groove is formed in the middle of the upper surface of the chassis dynamometer, and the inner wall of the square groove is movably connected with a driving wheel through a rotating shaft. A centering mechanism is arranged on the side face of the chassis dynamometer and comprises an adjusting unit and a connecting unit, and the adjusting unit comprises an air cylinder, a telescopic piece, a trapezoidal connecting column and a guide plate. According to the vehicle centering device for the chassis dynamometer, by arranging the adjusting unit, the air cylinder can push the telescopic piece to drive the trapezoidal connecting column and the guide plate to move and adjust to keep the trapezoidal connecting column and the guide plate in the middle of the chassis dynamometer when facing wheel distances of different automobiles, so that the adjustment is convenient; by arranging the tire fixing device, the immovable wheel can be kept fixed during chassis power measurement of the automobile, so that the situation that the immovable wheel displaces during power measurement is avoided, and power measurement can be carried out smoothly.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle detection, in particular to a vehicle centering device for a chassis dynamometer. Background Technique

[0002] A chassis dynamometer is a special metering device used to measure the output power, torque (or driving force), and rotational speed (or speed) of an automobile's driving wheels. The main parts of a chassis dynamometer are a roller mechanism, a power absorption device, a control and measurement system, and auxiliary devices.

[0003] At present, when some new vehicle centering mechanisms on existing chassis dynamometers are in use, they cannot calibrate the vehicle, resulting in the vehicle being skewed during testing. This will make the test results inaccurate and bring inconvenience to users, and it can no longer meet the usage requirements of users.

[0004] For example, a new vehicle centering mechanism for a chassis dynamometer disclosed in Chinese Patent CN217466048U. This new vehicle centering mechanism for a chassis dynamometer includes a first frame and a second frame. The upper surfaces of the first frame and the second frame are both provided with sliding grooves. Sliders are slidably connected inside the sliding grooves. A cover plate is fixedly connected to the upper surface of the sliders. A pulling block is fixedly connected to the upper surface of the cover plate. A jack hole is opened inside the cover plate. Positioning boxes are fixedly connected to the rear surfaces of the first frame and the second frame. A top spring is fixedly connected to the inner bottom of the positioning boxes. In this utility model, by setting sliding grooves, sliders, and cover plates on the first frame and the second frame, when the centering mechanism is not in use, the pulling block is used to control the cover plate to drive the slider to slide in the sliding groove and cover the roller on the centering mechanism, avoiding pedestrians from stepping on it and also avoiding pedestrians' legs from getting stuck inside the centering mechanism and being injured, reducing potential safety hazards.

[0005] However, when this new vehicle centering mechanism for a chassis dynamometer is in use, it cannot calibrate the vehicle, resulting in the vehicle being skewed during testing. This will make the test results inaccurate and bring inconvenience to users.

[0006] Therefore, we have proposed a vehicle centering device for a chassis dynamometer to solve the above problems. Content of the Utility Model

[0007] The purpose of the utility model is to provide a vehicle centering device for a chassis dynamometer to solve the problems raised in the above background technique.

[0008] To achieve the above object, the present utility model provides the following technical solution: A vehicle centering device for a chassis dynamometer, comprising a chassis dynamometer and a fixed base plate. The fixed base plate is fixedly installed on the bottom surface of the chassis dynamometer. A square groove is provided at the middle position of the upper surface of the chassis dynamometer. A driving wheel is movably connected to the inner wall of the square groove through a rotating shaft. A first sliding groove is provided at the lower part of one side of the chassis dynamometer, and a centering mechanism is arranged on the side surface of the chassis dynamometer;

[0009] The centering mechanism includes an adjusting unit and a connecting unit. The adjusting unit includes a cylinder, a telescopic member, a trapezoidal connecting column and a guiding plate. The cylinder is fixedly installed on the upper surface of the fixed base plate. The telescopic member is installed at the output end of the cylinder. The trapezoidal connecting column is fixedly installed on the side surface of one end of the telescopic member. The guiding plate is fixedly installed on the inclined side surface of the trapezoidal connecting column.

[0010] Preferably, the connecting unit includes a lower sliding module and an upper sliding module. The lower sliding module includes a first guiding column and a first sliding block. The first guiding column is fixedly installed on the inner wall of the first sliding groove. The first sliding block is installed on the outer surface of the first guiding column. The side surface of the first sliding block is fixedly connected to the side surface of the trapezoidal connecting column.

[0011] Preferably, the upper sliding module includes a cross column, a second sliding groove, a second guiding column and a second sliding block. The cross column is fixedly installed on the upper part of the side surface of the chassis dynamometer. The second sliding groove is provided on the upper surface of the cross column. The second guiding column is fixedly installed on the inner wall of the second sliding groove. The second sliding block is installed on the outer surface of the second guiding column. The upper surface of the second sliding block is fixedly connected to the bottom surface of one end of the guiding plate.

[0012] Preferably, a tire fixing device is provided on one side of the upper surface of the fixed base plate. The tire fixing device includes a third sliding groove, a third guiding column, a fixing block, a mounting column, a through hole and a connecting member. The third sliding groove is provided on the side surface of the fixed base plate. The third guiding column is fixedly installed on the inner wall of the third sliding groove. The fixing block is installed on the outer surface of the third guiding column. The mounting column is fixedly installed on one side of the upper surface of the fixing block. The through hole penetrates through the side surface of the mounting column. The connecting member is installed on the inner wall of the through hole.

[0013] Preferably, the cylinders are symmetrically distributed on both sides of the upper surface of the fixed base plate. The first sliding blocks are symmetrically distributed on both sides of the outer surface of the first guiding column.

[0014] Preferably, the gap between the bottom surface of the trapezoidal connecting column and the upper surface of the fixed base plate is between 6 cm and 10 cm. A protrusion is provided on one side of the upper surface of the fixed base plate. The bottom surface of one end of the guiding plate contacts the upper surface of the protrusion, which is convenient for the bottom surface of one end of the guiding plate to move at the protrusion provided on one side of the upper surface of the fixed base plate when the trapezoidal connecting column drives the guiding plate to move.

[0015] Preferably, the mounting posts are symmetrically distributed on the side surfaces of both ends of the fixed base plate, the through holes sequentially penetrate through the side surfaces of the mounting posts at equal intervals, the outer surface of the connecting member contacts the inner wall of the through hole, and the connecting member passes through the through hole and is connected and locked with the vehicle tire to maintain fixation.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. For the vehicle centering device used in this chassis dynamometer, by setting the adjusting unit, when facing the wheel spacing of different vehicles, the air cylinder can push the telescopic member to drive the trapezoidal connecting column and the guiding plate to move and adjust to maintain the middle position of the chassis dynamometer, and the adjustment is convenient.

[0018] 2. For the vehicle centering device used in this chassis dynamometer, by setting the tire fixing device, the non-driving wheel can be fixed during the chassis dynamometer test of the vehicle to avoid the displacement of the non-driving wheel during the dynamometer test, so that the dynamometer test can proceed smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the front view structural schematic diagram of the present utility model;

[0020] Figure 2 is the structural schematic diagram of the centering mechanism of the present utility model;

[0021] Figure 3 is Figure 2 the partial enlarged structural schematic diagram at A in

[0022] Figure 4 is the structural schematic diagram of the tire fixing device of the present utility model.

[0023] In the figure: 1, chassis dynamometer; 2, square groove; 3, rotating shaft; 4, driving wheel; 5, fixed base plate; 501, first chute; 502, first guiding column; 503, first slider; 504, air cylinder; 505, telescopic member; 506, trapezoidal connecting column; 507, guiding plate; 508, cross column; 509, second chute; 510, second guiding column; 511, second slider; 512, third chute; 513, third guiding column; 514, fixing block; 515, mounting post; 516, through hole; 517, connecting member. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0026] Embodiment 1: A vehicle centering device for a chassis dynamometer, including a chassis dynamometer 1 and a fixed base plate 5. The fixed base plate 5 is fixedly installed on the bottom surface of the chassis dynamometer 1. A square groove 2 is opened at the middle position of the upper surface of the chassis dynamometer 1. A driving wheel 4 is movably connected to the inner wall of the square groove 2 through a rotating shaft 3. A first sliding groove 501 is opened at the lower part of one side surface of the chassis dynamometer 1, and a centering mechanism is arranged on the side surface of the chassis dynamometer 1;

[0027] The centering mechanism includes an adjusting unit and a connecting unit. The adjusting unit includes a cylinder 504, a telescopic member 505, a trapezoidal connecting column 506 and a guiding plate 507. The cylinder 504 is fixedly installed on the upper surface of the fixed base plate 5. The telescopic member 505 is installed at the output end of the cylinder 504. The trapezoidal connecting column 506 is fixedly installed on the side surface of one end of the telescopic member 505. The guiding plate 507 is fixedly installed on the inclined side surface of the trapezoidal connecting column 506. The cylinders 504 are symmetrically distributed on both sides of the upper surface of the fixed base plate 5. The cylinders 504 are symmetrically distributed on both sides of the upper surface of the fixed base plate 5. The first sliders 503 are symmetrically distributed on both sides of the outer surface of the first guiding column 502.

[0028] The connecting unit includes a lower sliding module and an upper sliding module. The lower sliding module includes a first guiding column 502 and a first slider 503. The first guiding column 502 is fixedly installed on the inner wall of the first sliding groove 501. The first slider 503 is installed on the outer surface of the first guiding column 502. The side surface of the first slider 503 is fixedly connected to the side surface of the trapezoidal connecting column 506. The upper sliding module includes a cross column 508, a second sliding groove 509, a second guiding column 510 and a second slider 511. The cross column 508 is fixedly installed on the upper part of the side surface of the chassis dynamometer 1. The second sliding groove 509 is opened on the upper surface of the cross column 508. The second guiding column 510 is fixedly installed on the inner wall of the second sliding groove 509. The second slider 511 is installed on the outer surface of the second guiding column 510. The upper surface of the second slider 511 is fixedly connected to the bottom surface of one end of the guiding plate 507. The gap between the bottom surface of the trapezoidal connecting column 506 and the upper surface of the fixed base plate 5 is between 6 cm and 10 cm. A protrusion is arranged on one side of the upper surface of the fixed base plate 5. The bottom surface of one end of the guiding plate 507 contacts the upper surface of the protrusion. By setting the adjusting unit, when facing the wheel spacing of different vehicles, the cylinder 504 can push the telescopic member 505 to drive the trapezoidal connecting column 506 and the guiding plate 507 to move and adjust to keep them at the middle position of the chassis dynamometer 1, and the adjustment is convenient.

[0029] The vehicle travels through the guiding plate 507 so that the wheel for dynamometer testing is located on the upper surface of the driving wheel 4 for dynamometer testing. The non-driving wheels of the vehicle are located on the upper surface of the guiding plate 507. When dynamometer testing is performed, if the vehicle body deflects, the cylinder 504 works to push the telescopic member 505 to drive the trapezoidal connecting column 506 to move, thereby pushing the guiding plate 507 to move and adjust the position of the vehicle body. When the guiding plate 507 moves, it drives the first slider 503 and the second slider 511 to move to the middle position of the chassis dynamometer 1.

[0030] Embodiment 2: Based on Embodiment 1, a tire fixing device is provided on one side of the upper surface of the fixed base plate 5. The tire fixing device includes a third chute 512, a third guiding column 513, a fixing block 514, a mounting column 515, a through hole 516, and a connecting member 517. The third chute 512 is opened on the side surface of the fixed base plate 5. The third guiding column 513 is fixedly installed on the inner wall of the third chute 512. The fixing block 514 is installed on the outer surface of the third guiding column 513. The mounting column 515 is fixedly installed on one side of the upper surface of the fixing block 514. The through hole 516 penetrates through the side surface of the mounting column 515. The connecting member 517 is installed on the inner wall of the through hole 516.

[0031] The mounting columns 515 are symmetrically distributed on both side surfaces of the two ends of the fixed base plate 5. The through holes 516 sequentially penetrate through the side surfaces of the mounting columns 515 at equal intervals. The outer surface of the connecting member 517 contacts the inner wall of the through hole 516. By providing the tire fixing device, the non-driving wheels can be fixed during the chassis dynamometer testing of the vehicle, avoiding the displacement of the non-driving wheels during the dynamometer testing, so that the dynamometer testing can proceed smoothly.

[0032] When the non-driving wheels of the vehicle are located on the upper surface of the guiding plate 507, they push the fixing block 514 to drive the mounting column 515 to move to the side of the wheel. By inserting the connecting member 517 into the through hole 516, the connecting member 517 is connected to the vehicle wheel to keep it fixed during the dynamometer testing.

[0033] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitations, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

Claims

1. A vehicle centering device for a chassis dynamometer, comprising a chassis dynamometer (1) and a fixed base plate (5), wherein the fixed base plate (5) is fixedly mounted on the bottom surface of the chassis dynamometer (1), and a square groove (2) is provided in the middle of the upper surface of the chassis dynamometer (1), characterized in that: The inner wall of the square groove (2) is movably connected to a driving wheel (4) via a rotating shaft (3); a first sliding groove (501) is provided at the lower part of the side surface of one end of the chassis dynamometer (1); and a centering mechanism is provided on the side surface of the chassis dynamometer (1); The centering mechanism comprises an adjustment unit and a connection unit, wherein the adjustment unit comprises a cylinder (504), a telescopic member (505), a trapezoidal connection column (506) and a guide plate (507), wherein the cylinder (504) is fixedly mounted on the upper surface of a fixed base plate (5), the telescopic member (505) is mounted on the output end of the cylinder (504), the trapezoidal connection column (506) is fixedly mounted on the side surface of one end of the telescopic member (505), and the guide plate (507) is fixedly mounted on the oblique side surface of the trapezoidal connection column (506).

2. The vehicle centering device for a chassis dynamometer according to claim 1, characterized in that: The connecting unit comprises a lower sliding module and an upper sliding module, the lower sliding module comprises a first guide column (502) and a first sliding block (503), the first guide column (502) is fixedly mounted on the inner wall of the first sliding groove (501), the first sliding block (503) is mounted on the outer surface of the first guide column (502), and the side surface of the first sliding block (503) is fixedly connected to the side surface of the trapezoidal connecting column (506).

3. The vehicle centering device for a chassis dynamometer according to claim 2, characterized in that: The upper sliding module comprises a transverse column (508), a second slide groove (509), a second guide column (510) and a second slider (511); the transverse column (508) is fixedly mounted on the upper side of the chassis dynamometer (1); the second slide groove (509) is opened on the upper surface of the transverse column (508); the second guide column (510) is fixedly mounted on the inner wall of the second slide groove (509); the second slider (511) is mounted on the outer surface of the second guide column (510); and the upper surface of the second slider (511) is fixedly connected to the bottom surface of one end of the guide plate (507).

4. The vehicle centering device for a chassis dynamometer according to claim 1, characterized in that: A tire fixing device is provided on one side of the upper surface of the fixed base plate (5), and the tire fixing device comprises a third slide groove (512), a third guide column (513), a fixing block (514), a mounting column (515), a through hole (516) and a connecting piece (517). The third slide groove (512) is opened on the side of the fixed base plate (5), the third guide column (513) is fixedly mounted on the inner wall of the third slide groove (512), the fixing block (514) is mounted on the outer surface of the third guide column (513), the mounting column (515) is fixedly mounted on one side of the upper surface of the fixing block (514), the through hole (516) runs through the side of the mounting column (515), and the connecting piece (517) is mounted on the inner wall of the through hole (516).

5. The vehicle centering device for a chassis dynamometer according to claim 2, characterized in that: The cylinders (504) are symmetrically distributed on both sides of the upper surface of the fixed base plate (5); the first sliding blocks (503) are symmetrically distributed on both sides of the outer surface of the first guide column (502).

6. The vehicle centering device for a chassis dynamometer according to claim 2, characterized in that: The gap between the bottom surface of the trapezoidal connecting column (506) and the upper surface of the fixed bottom plate (5) is between 6 cm and 10 cm. A protrusion is provided on one side of the upper surface of the fixed bottom plate (5), and the bottom surface of one end of the guide plate (507) contacts the upper surface of the protrusion.

7. The vehicle centering device for a chassis dynamometer according to claim 4, characterized in that: The mounting columns (515) are symmetrically distributed on the side surfaces of both ends of the fixed base plate (5), the through holes (516) are arranged in sequence and at equal intervals through the side surfaces of the mounting columns (515), and the outer surface of the connecting piece (517) is in contact with the inner wall of the through hole (516).

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