Limiting device for testing power of four-wheel drive chassis

Abstract

The utility model is applicable to the technical field of four-wheel-drive chassis power measurement, and provides a limiting device for four-wheel-drive chassis power measurement, which comprises a dynamometer main body and a side limiting assembly, a lifting plate is arranged on the dynamometer main body, and the lifting plate is linked to an automobile limiting assembly through an electric signal; after the automobile limiting assembly is separated from the vehicle which is dragged and limited, the lifting plate is triggered to lift, the vehicle is lifted, and the vehicle is driven to be separated from the dynamometer main body to lose the adhesion road holding force; vehicles are prevented from rushing out, and the overall safety is achieved; the side limiting assembly comprises a rear supporting seat and a limiting disc, the rear supporting seat is installed on the dynamometer body, the limiting disc is installed on the rear supporting seat through a telescopic rod, the limiting disc comprises a limiting disc body and a plurality of balls, and the balls are hinged to the limiting disc body; after the dragged and limited vehicle deviates, the position of the limiting disc body is adjusted through the telescopic rod, and the plurality of balls are used for abutting against and limiting the vehicle, so that the stability of the whole test is realized.

Description

Technical Field

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

[0002] Chassis dynamometer testing is of great significance for evaluating vehicle performance, optimizing drive system design, and conducting product development; "four-wheel drive chassis dynamometry" refers to the power measurement and performance testing of the chassis of four-wheel drive vehicles. In this kind of testing, the vehicle is placed on a device called a chassis dynamometer, which simulates the vehicle's driving situation on an actual road. Through rollers connected to the vehicle wheels, the chassis dynamometer can measure parameters such as the vehicle's power output, the efficiency of the drive system, and the friction between the tires and the ground.

[0003] For four-wheel drive vehicles, chassis dynamometer testing usually considers the power output of the four wheels and their distribution. Through this kind of testing, the performance, dynamic response of the four-wheel drive system, and driving stability under different road surfaces and driving conditions can be evaluated.

[0004] A chassis dynamometer is a device specifically used to evaluate vehicle performance, and the method of fixing the vehicle is crucial for the test results. Some common vehicle fixing methods are: 1. Four-wheel alignment fixtures, which are a common fixing method. The four wheels of the vehicle are firmly fixed on the rollers of the dynamometer through the fixtures; this method ensures the stability and safety of the vehicle during the test and makes the test data more accurate; 2. Safety ropes. In addition to fixture fixing, safety ropes are usually used to fix the vehicle to the dynamometer to prevent accidents during the test; 3. Hub adapters. The dynamometer may need to use special hub adapters to ensure compatibility with the vehicle wheels and provide better connection and fixation.

[0005] However, after using the four-wheel alignment fixture to limit and fix the vehicle, there will be a problem of incompatibility, that is, some vehicles with special sizes or shapes may not be suitable for standard four-wheel alignment fixtures and require customized or specially designed fixtures; however, when using safety ropes, the vehicle will deviate, and when the safety ropes fail, the vehicle is likely to rush out.

[0006] Therefore, in order for the four-wheel drive chassis dynamometer to simultaneously have "compatibility", "stability", and "safety", a limiting device for four-wheel drive chassis dynamometry is specifically proposed. Content of the Utility Model

[0007] The purpose of the embodiment of the utility model is to provide a limiting device for four-wheel drive chassis dynamometry, aiming to solve the problem that the four-wheel drive chassis dynamometer simultaneously has "compatibility", "stability", and "safety".

[0008] Specifically: A limit device for four-wheel drive chassis dynamometer, comprising a dynamometer body, and a vehicle limit assembly mounted on the dynamometer body; the vehicle limit assembly is used to limit the vehicle towing on the dynamometer body, and the dynamometer body is equipped with multiple test roller groups, the test roller groups are used to perform dynamometer tests on the vehicle, so as to adapt to a variety of vehicles and improve adaptability; a lifting plate is installed on the dynamometer body, and the lifting plate electrical signal is linked to the vehicle limit assembly, and the lifting plate is triggered to lift after the vehicle limit assembly is separated from the vehicle limited by the towing, so as to lift the vehicle The vehicle is lifted and driven away from the dynamometer body to lose its adhesion and grip; the vehicle is prevented from rushing out, and the overall safety is achieved; a side limit assembly is installed on the side of the test roller group, and the side limit assembly includes a rear support seat and a limit plate, the rear support seat is installed on the dynamometer body, and the limit plate is installed on the rear support seat through a telescopic rod, and the limit plate includes a limit plate body and a plurality of balls, and the plurality of balls are hinged on the limit plate body; after the towed and limited vehicle is offset, the position of the limit plate body is adjusted by the telescopic rod, and the vehicle is limited by the plurality of balls;

[0009] The vehicle is dragged and limited on the dynamometer body by the vehicle limiting assembly, and the vehicle is directly tested by the test roller group, so as to adapt to a variety of vehicles and improve adaptability; after the vehicle limiting assembly is separated from the vehicle, the lifting plate is triggered to lift the vehicle, and drive the vehicle to separate from the dynamometer body and lose its adhesion and grip, so as to avoid the vehicle from rushing out and achieve overall safety; the vehicle is dragged and limited on the dynamometer body by the vehicle limiting assembly, and the vehicle is tested by the test roller group. If the towed and limited vehicle is offset, the position of the limit plate is adjusted by the telescopic rod, and the vehicle is limited by multiple balls; the vehicle is limited on the test roller group for testing, so as to achieve the stability of the overall test.

[0010] The technical solution of this application is further described below:

[0011] In one of the embodiments, the dynamometer body includes a support plate, and multiple groups of test roller arrays are distributed on the support plate; an installation cavity A is opened on the support plate, and the installation cavity A is used to accommodate and place a lifting plate; a lifting rod is installed on the lifting plate, and the lifting rod is placed inside the installation cavity A and fixed at the bottom of the installation cavity A.

[0012] Furthermore, the lifting rod and the telescopic rod are electric telescopic rods.

[0013] In one embodiment, the rear support seat includes a support plate, a mounting cavity B is formed on the support plate, and the telescopic rod is installed inside the mounting cavity B.

[0014] Further, the rear support seat further includes a vertical plate, one end of the vertical plate is fixed on the support disk, and the other end is fixed with a mounting plate; a plurality of mounting bolts are inserted through the mounting plate, and the mounting plate is mounted on the dynamometer main body through the plurality of mounting bolts.

[0015] In one embodiment, the vehicle limiting assembly includes a fixing plate integrally fixed on the dynamometer main body; the vehicle limiting assembly further includes a positioning block slidably assembled on an adjustment chute opened on the fixing plate; a plurality of limiting holes are opened on the adjustment chute, and the positioning block is inserted into the limiting holes through limiting pins.

[0016] Further, a locking column is fixed on the positioning block, and an infrared sensor is installed at the connection of the locking column; the infrared sensor is electrically connected to the lifting plate; a locking chain is fixed on the locking column, and the locking chain is used to drag and limit the vehicle on the dynamometer main body.

[0017] According to the vehicle models of different vehicles at the root, pull out the limiting pin from the limiting hole, slide and adjust the positioning block on the adjustment chute, and then re-insert the limiting pin into the positioning hole to complete the fixing of the positioning block on the fixing plate; use the locking chain to drag and limit the vehicle on the dynamometer main body, and then use the test roller set to perform a dynamometer test on the vehicle; realize the applicability to vehicles of different models;

[0018] After the vehicle limiting assembly is separated from the vehicle, when the infrared sensor detects that the locking column is separated from the positioning block, or after the vehicle is separated from the locking chain, the lifting plate is triggered to lift the vehicle, and the vehicle is driven to separate from the dynamometer main body and lose the attachment and grip, avoiding the vehicle from rushing out and realizing the overall safety.

[0019] In one embodiment, a lifting plate is arranged on the dynamometer main body in cooperation with the side limiting assembly, the side limiting assembly is installed on the lifting plate, a storage cavity is opened on the dynamometer main body in cooperation with the lifting plate, the lifting plate is placed inside the storage cavity, and a cylinder is installed in the storage cavity, and the cylinder is fixed on the lifting plate.

[0020] Compared with the prior art, the limiting device for four-wheel drive chassis dynamometer of the present utility model can achieve:

[0021] When the vehicle limiting assembly drags and limits the vehicle on the dynamometer main body, directly use the test roller set to perform a dynamometer test on the vehicle, realizing the adaptation to a variety of vehicles and improving the adaptability; after the vehicle limiting assembly is separated from the vehicle, trigger the lifting plate to lift the vehicle, and drive the vehicle to separate from the dynamometer main body and lose the attachment and grip, avoiding the vehicle from rushing out and realizing the overall safety;

[0022] The vehicle is dragged and limited on the dynamometer main body by the vehicle limiting assembly. When the dragged and limited vehicle deviates during the dynamometer test using the test roller set, the position of the limiting disc body is adjusted through the telescopic rod, and the vehicle is abutted and limited by multiple spheres; this ensures that the vehicle is limited on the test roller set for testing, achieving the stability of the overall test.

[0023] According to different vehicle models, pull out the limit pin from the limit hole. After the positioning block slides and adjusts on the adjustment chute, insert the limit pin into the hole again to complete the fixation of the positioning block on the fixed plate; use the locking chain to drag and limit the vehicle on the dynamometer main body, and then use the test roller set to perform the dynamometer test on the vehicle; this enables the device to be applicable to vehicles of different models. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a structural schematic diagram of the limiting device for a four-wheel drive chassis dynamometer of the present invention;

[0026] Figure 2 It is a demonstration diagram of the limiting device for a four-wheel drive chassis dynamometer of the present invention with the lifting plate lifted;

[0027] Figure 3 It is Figure 1 a structural schematic diagram of the vehicle limiting assembly in

[0028] Figure 4 It is Figure 1 a structural schematic diagram of the dynamometer main body in

[0029] Figure 5 It is Figure 4 a structural schematic diagram after removing the side limiting component;

[0030] Figure 6 It is Figure 4 a structural schematic diagram of the side limiting component in

[0031] Figure 7 It is Figure 6 a demonstration diagram of the side limiting component with the limiting disc extended in

[0032] Figure 8 It is Figure 6 a structural schematic diagram of the rear support seat in

[0033] Figure 9The present invention is a schematic structural diagram of another embodiment of the limit device for measuring dynamometer of a four-wheel drive chassis.

[0034] In the reference numerals:

[0035] Dynamometer body 100; support plate 110, test roller group 120, side limit assembly 130, lifting plate 140, installation cavity A 150, lifting rod 160, lifting plate 170, storage cavity 180; rear support seat 131, limit plate 132; support plate 1311, installation cavity B 1312, telescopic rod 1313, vertical plate 1314, installation plate 1315, installation bolt 1316; limit plate body 1321, ball 1322;

[0036] The automobile limiting assembly 200 includes a locking chain 210 , a locking column 220 , a positioning block 230 , a fixing plate 240 , and an adjusting slide groove 250 . DETAILED DESCRIPTION

[0037] 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.

[0038] In the embodiment of the utility model, Figure 1 , 2 4-8: A limit device for four-wheel drive chassis dynamometer, comprising a dynamometer body 100, and a vehicle limit assembly 200 mounted on the dynamometer body 100; the vehicle limit assembly 200 is used to drag and limit the vehicle on the dynamometer body 100, and the dynamometer body 100 is equipped with multiple test roller groups 120, and the test roller groups 120 are used to perform dynamometer tests on the vehicle;

[0039] It should be noted that the test roller set 120 is a prior art, and its detailed structure can be found in existing literature journals, and can also be purchased directly on the market, or can be assembled from components purchased on the market, etc. It is not what the present invention intends to protect, and will not be elaborated in detail here;

[0040] A lifting plate 140 is installed on the dynamometer body 100, and the lifting plate 140 is electrically linked to the vehicle limit assembly 200. After the vehicle limit assembly 200 is separated from the towed and limited vehicle, the lifting plate 140 is triggered to lift up, lift the vehicle, and drive the vehicle to separate from the dynamometer body 100 and lose its adhesion and grip;

[0041] It should be noted that the method of linking the lifting plate 140 with the vehicle limit assembly 200 by electrical signals is a prior art, for example, it can be linked with electrical signals through optical fiber cables, or wireless Bluetooth electrical signals, etc., and its detailed structure can be learned from existing literature journals, and it can also be directly purchased on the market, or components can be purchased on the market to form it, etc.; it is not what the present invention is intended to protect, and will not be elaborated here;

[0042] Therefore, summarizing the above-mentioned situations, it can be known that: when the vehicle limiting assembly 200 drags and limits the vehicle on the dynamometer body 100, the test roller group 120 is directly used to perform dynamometer testing on the vehicle, so as to adapt to a variety of vehicles and improve adaptability; when the vehicle limiting assembly 200 is separated from the vehicle, the lifting plate 140 is triggered to lift the vehicle, and the vehicle is driven to separate from the dynamometer body 100 and lose the adhesion and grip, so as to prevent the vehicle from rushing out and achieve overall safety;

[0043] A side limit assembly 130 is installed on the side of the test roller assembly 120. The side limit assembly 130 includes a rear support seat 131 and a limit plate 132. The rear support seat 131 is installed on the dynamometer body 100. The limit plate 132 is installed on the rear support seat 131 through a telescopic rod 1313. The limit plate 132 includes a limit plate body 1321 and a plurality of balls 1322. The plurality of balls 1322 are spherically hinged on the limit plate body 1321.

[0044] When the vehicle being dragged and limited is offset, the position of the limiting plate 1321 is adjusted by the telescopic rod 1313, and the plurality of balls 1322 are used to abut against and limit the vehicle;

[0045] Therefore, summarizing the above-mentioned situation, it can be learned that: when the vehicle limiting assembly 200 drags and limits the vehicle on the dynamometer body 100, and uses the test roller group 120 to perform a dynamometer test on the vehicle, after the dragged and limited vehicle is offset, the position of the limiting disk body 1321 is adjusted by the telescopic rod 1313, and the vehicle is limited by using multiple balls 1322 to ensure that the vehicle is limited on the test roller group 120 for testing, thereby achieving the stability of the overall test.

[0046] In the embodiment of the utility model, Figure 1 , 2 , 4 and 5: the dynamometer body 100 includes a support plate 110, and a plurality of test roller groups 120 are distributed in an array on the support plate 110;

[0047] The support plate 110 is provided with an installation cavity A150 for accommodating the lifting plate 140 ; ​​a lifting rod 160 is installed on the lifting plate 140 , and the lifting rod 160 is placed inside the installation cavity A150 and fixed at the bottom of the installation cavity A150 .

[0048] In the embodiment of the present utility model, as Figure 2 and Figure 8 shown: The lifting rod 160 and the telescopic rod 1313 are electric telescopic rods.

[0049] It should be noted that: In addition to being electric telescopic rods, the lifting rod 160 and the telescopic rod 1313 can also be pneumatic telescopic rods, or can be hydraulic telescopic rods, etc., which are all prior arts. There is no limitation on their specific structure, as long as they can meet the telescopic adjustment; at the same time, they can be directly purchased on the market, and there are also relevant descriptions in the corresponding periodical literature, which are not what the present invention aims to protect and will not be elaborated in detail here.

[0050] In the embodiment of the present utility model, as Figure 8 shown: The rear support base 131 includes a support disk 1311, and an installation cavity B1312 is opened on the support disk 1311. The telescopic rod 1313 is installed inside the installation cavity B1312.

[0051] In the embodiment of the present utility model, as Figure 8 shown: The rear support base 131 further includes a vertical plate 1314. One end of the vertical plate 1314 is fixed on the support disk 1311, and an installation plate 1315 is fixed at the other end; A plurality of installation bolts 1316 are inserted through the installation plate 1315, and the rear support base 131 is installed on the dynamometer main body 100 through the plurality of installation bolts 1316.

[0052] In the embodiment of the present utility model, as Figure 3 shown: The vehicle limiting assembly 200 includes a fixing plate 240, and the fixing plate 240 is integrally fixed on the dynamometer main body 100;

[0053] The vehicle limiting assembly 200 further includes a positioning block 230, and the positioning block 230 is slidably assembled on an adjustment chute 250 opened on the fixing plate 240; A plurality of limiting holes are opened on the adjustment chute 250, and the positioning block 230 is inserted inside the limiting holes through a limiting pin.

[0054] In the embodiment of the present utility model, as Figure 3 shown: A locking column 220 is fixed on the positioning block 230, and an infrared sensor is installed at the connection of the locking column 220; The electric signal of the infrared sensor is linked to the lifting plate 140;

[0055] A locking chain 210 is fixed on the locking column 220, and the locking chain 210 is used to drag and limit the vehicle on the dynamometer main body 100.

[0056] Therefore, summarizing the above-mentioned situations, it can be known that: for different vehicle models, the limit pin is pulled out from the limit hole, the positioning block 230 is slid and adjusted on the adjustment slide groove 250, and then the limit pin is inserted into the position hole again to complete the fixing of the positioning block 230 on the fixing plate 240; the locking chain 210 is used to drag the vehicle to the dynamometer body 100, and then the test roller group 120 is used to perform dynamometer test on the vehicle; so as to achieve the application of vehicles of different models;

[0057] When the automobile limiting assembly 200 is separated from the vehicle, the infrared sensor detects that the locking column 220 is separated from the positioning block 230, or the vehicle is separated from the locking chain 210, triggering the lifting plate 140 to lift the vehicle and drive the vehicle to separate from the dynamometer body 100 and lose its adhesion and grip, thereby preventing the vehicle from rushing out and achieving overall safety.

[0058] In the embodiment of the utility model, Figure 9 As shown: the dynamometer body 100 is provided with a lifting plate 170 in cooperation with the side limit assembly 130, the side limit assembly 130 is installed on the lifting plate 170, the dynamometer body 100 is provided with a storage cavity 180 in cooperation with the lifting plate 170, the lifting plate 170 is placed inside the storage cavity 180, the storage cavity 180 is installed with a cylinder, and the cylinder is fixed to the lifting plate 170.

[0059] After the four-wheel alignment fixture is used to limit and fix the vehicle, there will be a problem of incompatibility, that is, some vehicles of special size or shape may not be suitable for standard four-wheel alignment fixtures, and require customized or specially designed fixtures; however, when the safety rope is used, it will cause the vehicle to deviate, and when the safety rope fails, the vehicle is easy to rush out; in order to make the four-wheel drive chassis dynamometer have both "adaptability", "stability" and "safety"; the limit device for four-wheel drive chassis dynamometer of the utility model can do the following:

[0060] When the vehicle limiting assembly 200 drags and limits the vehicle on the dynamometer body 100, the test roller group 120 is directly used to perform dynamometer tests on the vehicle, so as to adapt to a variety of vehicles and improve adaptability; after the vehicle limiting assembly 200 is separated from the vehicle, the lifting plate 140 is triggered to lift the vehicle, and drive the vehicle to separate from the dynamometer body 100 and lose its adhesion and grip, so as to avoid the vehicle rushing out and achieve overall safety; when the vehicle limiting assembly 200 drags and limits the vehicle on the dynamometer body 100, and the test roller group 120 is used to perform dynamometer tests on the vehicle, after the towed and limited vehicle deviates, the position of the limiting disk 1321 is adjusted by the telescopic rod 1313, and the vehicle is restrained and limited by a plurality of balls 1322; the vehicle is ensured to be limited on the test roller group 120 for testing, so as to achieve the stability of the overall test.

[0061] In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more. The present utility model is described in detail in conjunction with schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of explanation, the cross-sectional views showing the device structure will be enlarged locally not in accordance with the general scale, and the said schematic diagrams are only examples, which should not limit the scope of protection of the present utility model herein. In addition, in actual production, three-dimensional spatial dimensions including length, width and depth should be included.

[0062] In the description of the present utility model, although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A limit device for four-wheel drive chassis dynamometer, characterized in that: The dynamometer comprises a main body (100), and a vehicle position limiting assembly (200) mounted on the main body (100); the vehicle position limiting assembly (200) is used to drag and position a vehicle on the main body (100); a plurality of test roller groups (120) are mounted on the main body (100); the test roller groups (120) are used to perform a dynamometer test on the vehicle; A lifting plate (140) is installed on the dynamometer body (100), and an electrical signal of the lifting plate (140) is linked to the vehicle limit assembly (200). After the vehicle limit assembly (200) is separated from the towed and limited vehicle, the lifting plate (140) is triggered to lift up, thereby lifting the vehicle and driving the vehicle to separate from the dynamometer body (100) and lose its adhesion and grip; A side limit assembly (130) is installed on the side of the test roller group (120), the side limit assembly (130) comprising a rear support seat (131) and a limit plate (132), the rear support seat (131) is installed on the dynamometer body (100), the limit plate (132) is installed on the rear support seat (131) via a telescopic rod (1313), the limit plate (132) comprises a limit plate body (1321) and a plurality of balls (1322), and the plurality of balls (1322) are spherically hinged on the limit plate body (1321); After the towed and limited vehicle is deviated, the position of the limit plate body (1321) is adjusted by means of the telescopic rod (1313), and the plurality of balls (1322) are used to abut against and limit the vehicle.

2. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 1, characterized in that: The dynamometer body (100) comprises a support plate (110), and a plurality of test roller groups (120) are distributed in an array on the support plate (110); The support plate (110) is provided with an installation cavity A (150), and the installation cavity A (150) is used to accommodate and place the lifting plate (140); a lifting rod (160) is installed on the lifting plate (140), and the lifting rod (160) is placed inside the installation cavity A (150) and fixed to the bottom of the installation cavity A (150).

3. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 2, characterized in that: The lifting rod (160) and the telescopic rod (1313) are electric telescopic rods.

4. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 1, characterized in that: The rear support seat (131) comprises a support plate (1311), a mounting cavity B (1312) is provided on the support plate (1311), and the telescopic rod (1313) is mounted inside the mounting cavity B (1312).

5. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 4, characterized in that: The rear support seat (131) further comprises a vertical plate (1314), one end of the vertical plate (1314) is fixed to the support plate (1311), and the other end is fixed to a mounting plate (1315); the mounting plate (1315) is penetrated by a plurality of mounting bolts (1316), and is mounted on the dynamometer body (100) via the plurality of mounting bolts (1316).

6. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 1, characterized in that: The automobile limiting assembly (200) comprises a fixing plate (240), wherein the fixing plate (240) is fixed integrally to the dynamometer body (100); The automobile limiting assembly (200) further comprises a positioning block (230), wherein the positioning block (230) is slidably mounted on an adjustment slide groove (250) provided on the fixing plate (240); a plurality of limiting holes are provided on the adjustment slide groove (250), and the positioning block (230) is inserted into the limiting holes via limiting pins.

7. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 6, characterized in that: A locking column (220) is fixed on the positioning block (230), and an infrared sensor is installed at the connection between the locking column (220) and the lifting plate (140); an electrical signal of the infrared sensor is linked to the lifting plate (140); A locking chain (210) is fixed on the locking column (220), and the locking chain (210) is used to drag the vehicle to a position on the dynamometer body (100).

8. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 1, characterized in that: The dynamometer body (100) is provided with a lifting plate (170) in cooperation with the side limit assembly (130), and the side limit assembly (130) is mounted on the lifting plate (170).

9. The limit device for measuring dynamometer of a four-wheel drive chassis according to claim 8, characterized in that: A storage chamber (180) is provided on the dynamometer body (100) in cooperation with the lifting plate (170). The lifting plate (170) is placed inside the storage chamber (180). A cylinder is installed in the storage chamber (180) and the cylinder is fixed to the lifting plate (170).

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