Four-wheel drive chassis dynamometer

Abstract

The utility model belongs to the technical field of dynamometers, and provides a four-wheel drive chassis dynamometer, which comprises a dynamometer frame assembly, four mounting grooves distributed in an array are arranged on the dynamometer frame assembly, and a unit dynamometer is correspondingly mounted in each mounting groove; the unit dynamometer comprises a unit dynamometer main body and a weight regulator; the weight adjuster comprises a limiting piece and a weight adjusting base, and the limiting piece is assembled on the weight adjusting base; the weight adjusting base comprises an air cylinder, the air cylinder is fixed to the limiting piece, the pressure between one automobile wheel and the unit dynamometer body is correspondingly adjusted through telescopic adjustment of the air cylinder, and adjustment of the pressure between one or more automobile wheels and the unit dynamometer body is completed. The situation that the gravity center of the vehicle-mounted heavy object is not always at the parallel point and one or more automobile wheels may exist is accurately dealt with, and the test reasonability and precision are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamometers, in particular to a four-wheel drive chassis dynamometer. Background Art

[0002] Chassis dynamometer is a device used to test the dynamic performance of a vehicle. It is widely used in the automotive industry, R&D fields, and performance testing centers. By simulating the process of a vehicle driving on an actual road, the chassis dynamometer can evaluate key performance indicators such as the vehicle's power, torque, and fuel efficiency.

[0003] The chassis dynamometer uses advanced sensors and control systems to monitor and record the power and torque output of the vehicle under different working conditions in real time. This enables the chassis dynamometer to provide high-precision and high-reliability data during the test, providing a reliable basis for vehicle performance evaluation.

[0004] In the actual vehicle test, it is necessary to refer to the vehicle's own weight and factors related to its load, especially the center of gravity of the heavy objects on the vehicle is not necessarily at the parallel point, it is very likely to be at one or more wheels, which is also a reason for measuring the rationality and accuracy of the test, and the existing dynamometer only tests the whole vehicle; for example, a Chinese patent for a four-wheel drive performance chassis dynamometer for automobile testing (authorization announcement number CN214748567U) records that "during the test, the lifting cylinder drives the chassis support plate of the vehicle body to rise and lifts the bottom of the chassis of the vehicle, so that the four driving wheels of the vehicle are in a just contact state with the test roller at the bottom, which greatly reduces the extrusion friction of the driving wheels on the test roller." It also lifts up to reduce the overall weight of the vehicle. On the one hand, it cannot adjust the load of the vehicle, and on the other hand, it cannot increase the weight at one or more wheels according to the center of gravity position of the heavy objects on the vehicle for rationality and accuracy testing.

[0005] Therefore, in view of the above problems, a four-wheel drive chassis dynamometer is proposed. Summary of the invention

[0006] The purpose of the utility model is to solve the shortcomings existing in the prior art: in the actual test of the vehicle, it is necessary to refer to the vehicle's own weight and factors related to its load, especially the center of gravity of the heavy objects on the vehicle is not necessarily at the parallel point, it is very likely to exist at one or more wheels, which is also a reason for measuring the rationality and accuracy of the test, while the existing dynamometer only performs the test as a whole, and a four-wheel drive chassis dynamometer is proposed.

[0007] Specifically: a four-wheel drive chassis dynamometer, including a dynamometer frame assembly, the dynamometer frame assembly is provided with four mounting slots distributed in an array, each mounting slot has a corresponding unit dynamometer installed inside, the unit dynamometer is used to test the wheels of a vehicle; the vehicle is driven onto the dynamometer frame assembly, and the vehicle wheels are limited on the unit dynamometer, and the vehicle wheels are tested using the unit dynamometer; the unit dynamometer includes a unit dynamometer body and a weight adjuster, and the weight adjuster is installed on the unit dynamometer body; the weight adjuster includes a limiter and a weight adjustment base, the limiter is assembled on the weight adjustment base, and the limiter is used to be rotatably assembled on the vehicle wheel; after the vehicle wheel is limited on the unit dynamometer, the limiter is used to be rotatably assembled on the vehicle wheel, and then the pressure between one of the vehicle wheels and the unit dynamometer body is correspondingly adjusted by the weight adjuster to complete the adjustment of the pressure between one or more vehicle wheels and the unit dynamometer body. The pressure between the two can be accurately dealt with. The center of gravity of the heavy object on the vehicle is not necessarily at the parallel point, and there may be one or more of the vehicle wheels. The rationality and accuracy of the test are improved, and finally the vehicle wheel is tested using the unit dynamometer body; the weight adjustment base includes a cylinder, which is fixed on a limit piece. The pressure between the vehicle wheel and the unit dynamometer body is adjusted by telescopic adjustment of the cylinder to achieve corresponding adjustment; after the vehicle wheel is limited on the unit dynamometer, the limit piece is used to rotate and assemble it on the vehicle wheel, and then the pressure between one of the vehicle wheels and the unit dynamometer body is adjusted by telescopic adjustment of the cylinder to complete the adjustment of the pressure between one or more of the vehicle wheels and the unit dynamometer body, so as to accurately deal with the situation that the center of gravity of the heavy object on the vehicle is not necessarily at the parallel point, and there may be one or more of the vehicle wheels. The rationality and accuracy of the test are improved, and finally the vehicle wheel is tested using the unit dynamometer body.

[0008] The technical solution of this application is further described below:

[0009] In one embodiment, the dynamometer frame assembly includes a dynamometer frame plate, four mounting slots distributed in an array are correspondingly opened on the dynamometer frame plate, and a supporting foot is fixed at each corner around the dynamometer frame plate.

[0010] Furthermore, insertion slots are formed on the inner wall of the installation groove. The unit dynamometer body is slidably assembled inside the installation groove. A hydraulic telescopic rod is fixed on each of the two side surfaces of the unit dynamometer body, and the other end of the hydraulic telescopic rod is fixed on the inner wall of the installation groove. A insertion plate is fixed on each of the two side surfaces of the unit dynamometer body, and the insertion plate is movably assembled inside the insertion slot; the insertion plate is located above the hydraulic telescopic rod. The hydraulic telescopic rod is used to adjust the position of the unit dynamometer body inside the installation groove according to the actual vehicle model. Then, the vehicle is driven onto the dynamometer frame assembly, and the vehicle wheels are limited on the unit dynamometer, and the unit dynamometer is used to test the vehicle wheels.

[0011] In one embodiment, the unit dynamometer body includes a top plate and an installation table. The installation table is assembled at the bottom of the top plate. An installation cavity is formed on the installation table, and a plurality of rollers are rotatably assembled inside the installation cavity.

[0012] Furthermore, an adjustment groove body one is formed on the top plate. The weight adjuster is slidably assembled inside the adjustment groove body one, and the weight adjuster is installed on the unit dynamometer body.

[0013] Optimally, a pneumatic telescopic rod one is installed inside the adjustment groove body one. One end of the pneumatic telescopic rod one is fixed on the weight adjuster, and the other end is fixed on the inner wall of the adjustment groove body one.

[0014] In one embodiment, the weight adjustment base further includes an adjustment slider. The adjustment slider is in a "soil" shape and is slidably assembled on the unit dynamometer body; an installation ring is fixed at the end of the cylinder, and the installation ring is installed on the adjustment slider through a plurality of installation bolts.

[0015] In one embodiment, the limiting member includes a support plate. An adjustment groove two is formed on the support plate, and a side clamping plate is slidably assembled on the adjustment groove two; there are two side clamping plates, which are symmetrically distributed on the adjustment groove two; the support plate is fixed on the cylinder.

[0016] Furthermore, an inner cushion plate is laid on the inner side of the side clamping plate, and the surface of the inner cushion plate is smooth.

[0017] Furthermore, a pneumatic telescopic rod two is installed inside the adjustment groove two. By adjusting the telescopic movement of the pneumatic telescopic rod two, the two symmetrically distributed side clamping plates can rotate and clamp on the vehicle wheels.

[0018] Compared with the prior art, the four-wheel drive chassis dynamometer of the present invention can achieve:

[0019] After limiting the position of the automobile wheel on the unit dynamometer, use the limiter to rotate and assemble it on the automobile wheel, and then adjust the pressure between one of the automobile wheels and the unit dynamometer body by telescopic adjustment of the cylinder to adjust the pressure between one or more automobile wheels and the unit dynamometer body, so as to accurately deal with the situation that the center of gravity of the heavy object on the vehicle is not necessarily at the parallel point, and may exist at one or more automobile wheels, so as to improve the rationality and accuracy of the test, and finally use the unit dynamometer body to test the automobile wheel;

[0020] Use a hydraulic telescopic rod to adjust the position of the unit dynamometer body inside the installation slot according to the actual vehicle model. Then drive the car onto the dynamometer frame assembly, limit the car wheels on the unit dynamometer, and use the unit dynamometer to test the car wheels. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a structural schematic diagram of a four-wheel drive chassis dynamometer in one embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a dynamometer frame assembly in one embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a unit dynamometer in one embodiment of the utility model;

[0025] Figure 4 for Figure 3 Demonstration picture of a car wheel being tested on a medium unit dynamometer;

[0026] Figure 5 It is a structural schematic diagram of a unit dynamometer body in one embodiment of the utility model;

[0027] Figure 6 It is a structural schematic diagram of a weight adjuster in one embodiment of the utility model;

[0028] Figure 7 It is a schematic structural diagram of a position-limiting member in one embodiment of the utility model;

[0029] Figure 8 It is a structural schematic diagram of a weight adjustment base in one embodiment of the utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] Dynamometer frame assembly 100; through slot 110, mounting slot 120, dynamometer frame plate 130, support foot 140;

[0032] Unit dynamometer 200; unit dynamometer body 210, weight adjuster 220; adjusting tank body 1 2101, top plate 2102, mounting cavity 2103, insertion plate 2104, roller 2105, mounting platform 2106; stopper 2201, weight adjustment base 2202; side clamping plate 22011, inner pad 22012, adjusting tank 22013, support plate 22014; cylinder 22021, mounting bolt 22022, mounting ring 22023, adjusting slider 22024;

[0033] Power shaft 300;

[0034] Car wheels 400. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. The specific implementation of the utility model is described in detail in conjunction with the specific embodiments.

[0036] In the embodiment of the utility model, Figure 1-4 6-8: A four-wheel drive chassis dynamometer, comprising a dynamometer frame assembly 100, wherein the dynamometer frame assembly 100 is provided with four mounting slots 120 distributed in an array, wherein a unit dynamometer 200 is correspondingly mounted inside each mounting slot 120, and the unit dynamometer 200 is used to test a vehicle wheel 400;

[0037] Therefore, summarizing the above-mentioned situation, it can be known that: the automobile is driven onto the dynamometer frame assembly 100, and the automobile wheel 400 is limited on the unit dynamometer 200 (it should be noted that: the method of limiting the automobile wheel 400 on the unit dynamometer 200 is a prior art, and its detailed structure can be learned from existing literature journals, and can also be directly purchased on the market, or can be purchased on the market. Components are assembled, etc.; it is not what the present invention wants to protect, and will not be elaborated here, nor drawn in the drawings), and the automobile wheel 400 is tested using the unit dynamometer 200;

[0038] The unit dynamometer 200 includes a unit dynamometer body 210 and a weight adjuster 220, wherein the weight adjuster 220 is mounted on the unit dynamometer body 210; the weight adjuster 220 includes a stopper 2201 and a weight adjustment base 2202, wherein the stopper 2201 is mounted on the weight adjustment base 2202, and the stopper 2201 is used to be rotatably mounted on a vehicle wheel 400;

[0039] It should be noted that the position where the limiter 2201 is rotatably assembled on the automobile wheel 400 can be rotatably assembled on the power shaft 300 fixed on the automobile wheel 400, or rotatably assembled on the main body of the automobile wheel 400, etc., which are all prior arts, and the specific structure is not limited, as long as the limiter 2201 can be rotatably assembled on the automobile wheel 400; at the same time, it can be directly purchased on the market, and there are related descriptions in the corresponding journals, which are not to be protected by the present invention, and will not be elaborated here;

[0040] Therefore, summarizing the above-mentioned situation, it can be known that: after limiting the automobile wheel 400 on the unit dynamometer 200, the limiting member 2201 is used to rotate and assemble on the automobile wheel 400, and then the pressure between one of the automobile wheels 400 and the unit dynamometer body 210 is correspondingly adjusted by the weight adjuster 220, so as to complete the adjustment of the pressure between one or more automobile wheels 400 and the unit dynamometer body 210, so as to achieve accurate response to the situation that the center of gravity of the vehicle-borne heavy object is not necessarily at the parallel point, and there may be one or more automobile wheels 400, so as to improve the rationality and accuracy of the test, and finally use the unit dynamometer body 210 to test the automobile wheel 400;

[0041] The weight adjustment base 2202 includes a cylinder 22021, which is fixed on the limiter 2201. The cylinder 22021 is adjusted to extend and retract to adjust the pressure between the vehicle wheel 400 and the unit dynamometer body 210.

[0042] It should be noted that the air cylinder 22021 can be replaced by a hydraulic cylinder, or an electric telescopic rod, etc., which are all existing technologies, and there is no restriction on the specific structure, as long as it can meet the telescopic adjustment; at the same time, it can be directly purchased on the market, and there are related descriptions in corresponding journals, which are not what the present invention wants to protect, and will not be elaborated here;

[0043] Therefore, summarizing the above-mentioned situation, it can be learned that: after limiting the automobile wheel 400 on the unit dynamometer 200, use the limiter 2201 to rotate and assemble it on the automobile wheel 400, and then use the cylinder 22021 to telescopically adjust the pressure between one of the automobile wheels 400 and the unit dynamometer body 210 to adjust the pressure between one or more automobile wheels 400 and the unit dynamometer body 210, so as to accurately deal with the situation that the center of gravity of the heavy object on the vehicle is not necessarily at the parallel point, and there may be one or more automobile wheels 400, thereby improving the rationality and accuracy of the test, and finally use the unit dynamometer body 210 to test the automobile wheel 400.

[0044] In the embodiment of the utility model, Figure 2 As shown: the dynamometer frame assembly 100 includes a dynamometer frame plate 130, four mounting slots 120 distributed in an array are correspondingly opened on the dynamometer frame plate 130, and a supporting foot 140 is fixed at each corner around the dynamometer frame plate 130.

[0045] In the embodiment of the utility model, Figure 1 , 2 As shown in Figure 5: a through slot 110 is provided on the inner wall of the installation slot 120, and the unit dynamometer body 210 is slidably assembled inside the installation slot 120. A hydraulic telescopic rod is fixed to each side surface of the unit dynamometer body 210, and the other end of the hydraulic telescopic rod is fixed to the inner wall of the installation slot 120. A through plate 2104 is fixed to each side surface of the unit dynamometer body 210, and the through plate 2104 is movably assembled inside the through slot 110.

[0046] The insertion plate 2104 is located above the hydraulic telescopic rod.

[0047] Therefore, summarizing the above situation, it can be learned that: using a hydraulic telescopic rod, the position of the unit dynamometer body 210 inside the mounting groove 120 is adjusted according to the actual vehicle model, and then the car is driven onto the dynamometer frame assembly 100, and the car wheel 400 is limited on the unit dynamometer 200, and the unit dynamometer 200 is used to test the car wheel 400.

[0048] In the embodiment of the utility model, Figure 5 As shown: the unit dynamometer body 210 includes a top plate 2102 and a mounting platform 2106. The mounting platform 2106 is mounted on the bottom of the top plate 2102. A mounting cavity 2103 is provided on the mounting platform 2106. A plurality of rollers 2105 are rotatably mounted inside the mounting cavity 2103.

[0049] In the embodiment of the utility model, Figure 3 and Figure 5As shown: An adjustment groove 2101 is provided on the top plate 2102, and the weight adjuster 220 is slidably assembled inside the adjustment groove 2101, thus completing the installation of the weight adjuster 220 on the unit dynamometer main body 210.

[0050] In the embodiment of the present utility model, as Figure 5 shown: An air pressure telescopic rod 1 is installed inside the adjustment groove 2101. One end of the air pressure telescopic rod 1 is fixed on the weight adjuster 220, and the other end is fixed on the inner wall of the adjustment groove 2101.

[0051] In the embodiment of the present utility model, as Figure 8 shown: The weight adjustment base 2202 further includes an adjustment slider 22024. The adjustment slider 22024 is in the shape of a Chinese character 'tu' and is slidably assembled on the unit dynamometer main body 210 (specifically, the adjustment slider 22024 is slidably assembled on the adjustment groove 2101);

[0052] The cylinder 22021 is fixed with an installation ring 22023 at its end. The installation ring 22023 is installed on the adjustment slider 22024 through a plurality of installation bolts 22022.

[0053] In the embodiment of the present utility model, as Figure 6 and Figure 7 shown: The limiting member 2201 includes a support plate 22014. An adjustment groove 22013 is provided on the support plate 22014, and a side clamping plate 22011 is slidably assembled on the adjustment groove 22013; There are two side clamping plates 22011, which are symmetrically distributed on the adjustment groove 22013; The support plate 22014 is fixed on the cylinder 22021.

[0054] In the embodiment of the present utility model, as Figure 7 shown: An inner cushion plate 22012 is laid inside the side clamping plate 22011, and the surface of the inner cushion plate 22012 is smooth.

[0055] In the embodiment of the present utility model, an air pressure telescopic rod 2 is installed inside the adjustment groove 22013. Through the telescopic adjustment of the air pressure telescopic rod 2, the two symmetrically distributed side clamping plates 22011 can rotate and clamp on the vehicle wheel 400.

[0056] In view of the fact that in actual vehicle tests, it is necessary to refer to factors related to the vehicle's own weight and its load capacity. In particular, the center of gravity of the vehicle load may not be at the parallel point, and it is very likely to be at one or more wheels. This is also one of the reasons for measuring the rationality and accuracy of the test. However, the existing dynamometers only conduct overall tests; the four-wheel drive chassis dynamometer of the present utility model can achieve:

[0057] After the automobile wheel 400 is limited on the unit dynamometer 200, the limiting member 2201 is used to rotate and assemble on the automobile wheel 400, and then the pressure between one of the automobile wheels 400 and the unit dynamometer body 210 is adjusted by the cylinder 22021 to adjust the pressure between one or more automobile wheels 400 and the unit dynamometer body 210, so as to accurately deal with the situation that the center of gravity of the vehicle-borne heavy object is not necessarily at the parallel point, and there may be one or more automobile wheels 400, so as to improve the rationality and accuracy of the test, and finally use the unit dynamometer body 210 to test the automobile wheel 400. Use a hydraulic telescopic rod to adjust the position of the unit dynamometer body 210 inside the mounting groove 120 according to the actual vehicle model, and then drive the car to the dynamometer frame assembly 100, and limit the automobile wheel 400 on the unit dynamometer 200, and use the unit dynamometer 200 to test the automobile wheel 400.

[0058] In the description of the present invention, unless otherwise specified, "multiple" means two or more. The present invention is described in detail with reference to schematic diagrams. When describing the implementation of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0059] In the description of the present invention, although the embodiments of the present invention have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A four-wheel drive chassis dynamometer, characterized in that: The dynamometer frame assembly (100) is provided with four mounting slots (120) distributed in an array, each mounting slot (120) correspondingly having a unit dynamometer (200) mounted therein, the unit dynamometer (200) being used to test a vehicle wheel (400); The unit dynamometer (200) comprises a unit dynamometer body (210) and a weight adjuster (220), wherein the weight adjuster (220) is mounted on the unit dynamometer body (210); the weight adjuster (220) comprises a limiter (2201) and a weight adjustment base (2202), wherein the limiter (2201) is mounted on the weight adjustment base (2202), and the limiter (2201) is used for being rotatably mounted on a vehicle wheel (400); The weight adjustment base (2202) includes a cylinder (22021) which is fixed on the limiter (2201). The cylinder (22021) is adjusted by telescoping to adjust the pressure between the automobile wheel (400) and the unit dynamometer body (210).

2. A four-wheel drive chassis dynamometer according to claim 1, characterized in that: The dynamometer frame assembly (100) comprises a dynamometer frame plate (130), four mounting slots (120) distributed in an array are correspondingly provided on the dynamometer frame plate (130), and a supporting foot (140) is respectively fixed at the corners around the dynamometer frame plate (130).

3. A four-wheel drive chassis dynamometer according to claim 2, characterized in that: The inner wall of the installation groove (120) is provided with a through slot (110), the unit dynamometer body (210) is slidably mounted inside the installation groove (120), a hydraulic telescopic rod is fixed to each side surface of the unit dynamometer body (210), the other end of the hydraulic telescopic rod is fixed to the inner wall of the installation groove (120), and a through plate (2104) is fixed to each side surface of the unit dynamometer body (210), the through plate (2104) is movably mounted inside the through slot (110); The insertion plate (2104) is located above the hydraulic telescopic rod.

4. A four-wheel drive chassis dynamometer according to claim 1, characterized in that: The unit dynamometer body (210) comprises a top plate (2102) and a mounting platform (2106); the mounting platform (2106) is mounted on the bottom of the top plate (2102); a mounting cavity (2103) is provided on the mounting platform (2106); a plurality of rollers (2105) are rotatably mounted inside the mounting cavity (2103).

5. A four-wheel drive chassis dynamometer according to claim 4, characterized in that: The top plate (2102) is provided with an adjustment slot body (2101), and the weight adjuster (220) is slidably assembled inside the adjustment slot body (2101), thereby completing the installation of the weight adjuster (220) on the unit dynamometer body (210).

6. A four-wheel drive chassis dynamometer according to claim 5, characterized in that: A pneumatic telescopic rod is installed inside the adjusting tank body (2101), one end of the pneumatic telescopic rod is fixed on the weight adjuster (220), and the other end is fixed on the inner wall of the adjusting tank body (2101).

7. The four-wheel drive chassis dynamometer according to claim 1, characterized in that: The weight adjustment base (2202) further includes an adjustment slider (22024). The adjustment slider (22024) is in the shape of a Chinese character 'tu' and is slidably assembled on the unit dynamometer main body (210). A mounting ring (22023) is fixed at the end of the cylinder (22021), and the mounting ring (22023) is mounted on the adjustment slider (22024) through a plurality of mounting bolts (22022).

8. The four-wheel drive chassis dynamometer according to claim 1, characterized in that: The limiting member (2201) includes a support plate (22014). An adjustment groove II (22013) is formed on the support plate (22014), and a side clamping plate (22011) is slidably assembled on the adjustment groove II (22013). There are two side clamping plates (22011), which are symmetrically distributed on the adjustment groove II (22013). The support plate (22014) is fixed on the cylinder (22021).

9. A four-wheel drive chassis dynamometer according to claim 8, characterized in that: An inner cushion plate (22012) is laid inside the side clamping plate (22011), and the surface of the inner cushion plate (22012) is smooth.

10. The four-wheel drive chassis dynamometer according to claim 8, characterized in that: An air pressure telescopic rod II is installed inside the adjustment groove II (22013). By adjusting the telescopic movement of the air pressure telescopic rod II, the two symmetrically distributed side clamping plates (22011) are rotated to clamp the vehicle wheel (400).

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