Improved motor vehicle chassis dynamometer

Abstract

An improved motor vehicle chassis dynamometer comprises a rack and a support, the support is slidably connected to the interior of the rack, a dismounting mechanism is arranged above the support, a vertical plate is slidably connected to the upper portion of the support, a cooling mechanism is arranged in the vertical plate, and a second connecting cylinder is rotatably connected to the interior of the support through a bearing. Tooth-shaped belt wheels are fixedly connected to the ends of the second connecting cylinders, and the two tooth-shaped belt wheels are both connected with a tooth-shaped belt in an engaged mode. The roller drives the first connecting rod to rotate, the first connecting rod drives the first connecting cylinder to rotate, the first connecting cylinder drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the rotating rod to rotate, the rotating rod drives the fan to rotate, and when the fan rotates, the interior of the dynamometer is cooled. No extra driving source or power supply is needed during cooling, and no extra energy is consumed during heat dissipation of the dynamometer.

Description

Technical Field

[0001] The utility model relates to the technical field of dynamometers, in particular to an improved motor vehicle chassis dynamometer. Background Art

[0002] Chassis dynamometer is an indoor bench test equipment used to test vehicle dynamics, multi-operating emission indicators, fuel indicators and other performance.

[0003] For example, the patent number CN216012555U is an improved chassis dynamometer, including a frame and an outer cover installed at the side end of the frame, characterized in that: the upper surface of the frame is processed with a groove, a roller is movably installed inside the groove, and a protective mechanism is movably installed on both sides of the frame. There are two groups of grooves, and the middle part of the two groups of grooves is provided with a driving mechanism. A heat sink is installed on the upper surface of the frame. The above document still has shortcomings. When in use, it includes a frame and an outer cover installed at the side end of the frame. When the roller rotates, gear A can rotate, and gear A is meshed with gear B, that is, gear A It can drive gear B to rotate, and the outer end of the protective cover is connected to gear B, so that the angle of the protective cover can be changed, and the protective cover is gradually lifted up, which is convenient for protecting both ends of the wheel. There are two groups of protective mechanisms, and the two groups of protective mechanisms are symmetrically installed about the longitudinal center line of the screw rod. However, the dynamometer in the above document dissipates heat from the dynamometer through a separate heat sink when in use, which increases the energy consumption of the dynamometer. Additional energy needs to be consumed when dissipating heat from the dynamometer. At the same time, the roller will have certain wear and tear after long-term use. After the roller is worn out, it is not convenient to disassemble and replace the roller. Summary of the invention

[0004] The utility model aims to solve the problem in the prior art that extra energy needs to be consumed when cooling the dynamometer, and provides an improved motor vehicle chassis dynamometer.

[0005] The utility model adopts a technical solution to solve the technical problem: this improved motor vehicle chassis dynamometer comprises a frame and a bracket, the frame is slidably connected to the inside of the frame, a disassembly mechanism is arranged above the bracket, a vertical plate is slidably connected to the top of the bracket, a cooling mechanism is arranged inside the vertical plate, the inside of the bracket is rotatably connected to a second connecting cylinder through a bearing, a toothed belt pulley is fixedly connected to the end of the second connecting cylinder, and the two toothed belt pulleys are meshed and connected with the toothed belt.

[0006] For further improvement, the cooling mechanism includes a rotating rod, the outer wall of which is rotatably connected to the vertical plate through a bearing, one end of the rotating rod is fixedly connected to a fan, and the other end of the rotating rod is fixedly connected to a first gear, and the first gear is meshed with a second gear.

[0007] To be further improved, the disassembly mechanism includes a screw and a first connecting tube, the outer walls at both ends of the screw are rotatably connected to the bracket through bearings, a handle is fixedly connected to the end of the screw, the outer wall of the screw is threadedly connected to a screw nut, the outer wall of the screw nut is fixedly connected to the vertical plate, the outer wall of the first connecting tube is rotatably connected to the vertical plate through a bearing, the end of the first connecting tube is fixedly connected to the second gear, and the interior of the first connecting tube is slidably connected to a first connecting rod.

[0008] For further improvement, a second connecting rod is slidably connected inside the second connecting cylinder, a roller is fixedly connected to the end of the second connecting rod, and the roller is fixedly connected to the end of the first connecting rod.

[0009] For further improvement, a sleeve is fixedly connected to the interior of the frame, a slide rod is slidably connected to the interior of the sleeve, and an end of the slide rod is fixedly connected to the bracket.

[0010] For further improvement, the outer walls of the sleeve and the slide rod are sleeved with a spring, and the two ends of the spring are respectively fixedly connected to the frame and the bracket.

[0011] The beneficial effects of the utility model are as follows: in the utility model, through the cooperation between the rotating rod, the fan, the first gear and the second gear, the roller drives the first connecting rod to rotate, the first connecting rod drives the first connecting tube to rotate, the first connecting tube drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the rotating rod to rotate, the rotating rod drives the fan to rotate, and when the fan rotates, the interior of the dynamometer is dissipated and cooled, and no additional driving source or power supply is required during cooling, and no additional energy is consumed when dissipating the heat of the dynamometer.

[0012] Through the cooperation between the lead screw, the handle, the lead screw nut, the first connecting tube and the first connecting rod, the handle drives the lead screw to rotate, the lead screw drives the lead screw nut to move, the lead screw nut drives the vertical plate to slide, the vertical plate drives the first connecting tube to move, the first connecting tube is separated from the first connecting rod, the roller, the first connecting rod and the second connecting rod are removed for replacement, the second connecting rod at the end of the new roller is inserted into the interior of the second connecting tube so that the first connecting rod corresponds to the position of the first connecting tube, the handle is rotated in the opposite direction, the vertical plate is opposite to the above-mentioned movement direction, the vertical plate drives the first connecting tube to move, the first connecting tube is sleeved on the outer wall of the first connecting rod, and the replacement of the roller is completed. After the roller is worn out, it is convenient to disassemble and replace the roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is a cross-sectional view of the mechanism of the utility model;

[0015] Figure 3It is a structural schematic diagram of the connection between the frame, the bracket and the spring in the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the connection between the bracket, the vertical plate and the roller in the utility model;

[0017] Figure 5 It is a schematic diagram of the structure of the connection between the first gear, the second gear and the rotating rod in the utility model;

[0018] Figure 6 It is a structural schematic diagram of the connection between the toothed belt pulley and the toothed belt in the utility model.

[0019] Explanation of the accompanying drawings: 1. frame, 2. bracket, 3. cooling mechanism, 301. rotating rod, 302. fan, 303. first gear, 304. second gear, 4. disassembly mechanism, 401. screw, 402. handle, 403. screw nut, 404. first connecting cylinder, 405. first connecting rod, 4a1. rubber sleeve, 5. vertical plate, 6. second connecting cylinder, 7. toothed belt pulley, 8. toothed belt, 9. second connecting rod, 10. roller, 11. sleeve, 12. slide rod, 13. spring. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings: Example

[0021] Refer to the attached Figure 1-6 : In this embodiment, an improved chassis dynamometer for motor vehicles includes a frame 1 and a bracket 2. The frame 1 is slidably connected to the bracket 2. A disassembly mechanism 4 is arranged above the bracket 2. The disassembly mechanism 4 is convenient for disassembling the roller 10. A vertical plate 5 is slidably connected to the bracket 2. A cooling mechanism 3 is arranged inside the vertical plate 5. The cooling mechanism 3 cools the dynamometer. A second connecting cylinder 6 is rotatably connected to the inside of the bracket 2 through a bearing. A toothed belt pulley 7 is fixedly connected to the end of the second connecting cylinder 6. The second connecting cylinder 7 rotates together with the toothed belt pulley 7. The toothed belt pulley 7 is connected to an external power source. The connection method with the external power source is the same as that in an improved chassis dynamometer with patent number CN216012555U;

[0022] The two toothed belt pulleys 7 are meshed and connected with the toothed belt 8. The two toothed belt pulleys 7 rotate together under the action of the toothed belt 8. The second connecting cylinder 6 is slidably connected to the inside with the second connecting rod 9. The first connecting cylinder 6 drives the second connecting rod 9 to rotate when it rotates. The end of the second connecting rod 9 is fixedly connected to the roller 10. The second connecting rod 9 drives the roller 10 to rotate. The roller 10 is fixedly connected to the end of the first connecting rod 405. The roller 10 drives the first connecting rod 405 to rotate. The frame 1 is fixedly connected to the inside with a sleeve 11. The sleeve 11 is slidably connected to the inside with a sliding rod 12. The sliding rod 12 slides inside the sleeve 11. The end of the sliding rod 12 is fixedly connected to the bracket 2. The outer walls of the sleeve 11 and the sliding rod 12 are sleeved with a spring 13. The model of the spring 13 is the same as that in an improved chassis dynamometer with patent number CN216012555U. The two ends of the spring 13 are respectively fixedly connected to the frame 1 and the bracket 2.

[0023] The cooling mechanism 3 includes a rotating rod 301, a fan 302, a first gear 303 and a second gear 304. The outer wall of the rotating rod 301 is rotatably connected to the vertical plate 5 through a bearing. The fan 302 is fixedly connected to one end of the rotating rod 301, and the rotating rod 301 drives the fan 302 to rotate. The first gear 303 is fixedly connected to the other end of the rotating rod 301, and the first gear 303 drives the rotating rod 301 to rotate. The first gear 303 is meshed and connected with the second gear 304, and the second gear 304 drives the first gear 303 to rotate.

[0024] The drum 10 drives the first connecting rod 405 to rotate, the first connecting rod 405 drives the first connecting tube 404 to rotate, the first connecting tube 404 drives the second gear 304 to rotate, the second gear 304 drives the first gear 303 to rotate, the first gear 303 drives the rotating rod 301 to rotate, the rotating rod 301 drives the fan 302 to rotate, and when the fan 302 rotates, the interior of the dynamometer is cooled and cooled, and no additional driving source or power supply is required for cooling, and no additional energy is consumed when dissipating heat from the dynamometer.

[0025] The disassembly mechanism 4 includes a lead screw 401, a handle 402, a lead screw nut 403, a first connecting tube 404 and a first connecting rod 405. The outer walls of both ends of the lead screw 401 are rotatably connected to the bracket 2 through bearings. The end of the lead screw 401 is fixedly connected with a handle 402, and the handle 402 drives the lead screw 401 to rotate. The outer wall of the lead screw 401 is threadedly connected with a lead screw nut 403. The lead screw 401 drives the lead screw nut 403 to move. The outer wall of the lead screw nut 403 is fixedly connected to the vertical plate 5, and the lead screw nut 403 drives the vertical plate 5 to slide.

[0026] The outer wall of the first connecting cylinder 404 is rotatably connected to the vertical plate 5 through a bearing, and the vertical plate 5 drives the first connecting cylinder 404 to move. The end of the first connecting cylinder 404 is fixedly connected to the second gear 304, and the first connecting cylinder 404 drives the second gear 304 to rotate. The first connecting cylinder 404 is slidably connected to the first connecting rod 405 inside, and the first connecting rod 405 drives the first connecting cylinder 404 to rotate when rotating.

[0027] The handle 402 drives the screw 401 to rotate, the screw 401 drives the screw nut 403 to move, the screw nut 403 drives the vertical plate 5 to slide, the vertical plate 5 drives the first connecting tube 404 to move, the first connecting tube 404 is separated from the first connecting rod 405, the roller 10, the first connecting rod 405 and the second connecting rod 9 are removed for replacement, the second connecting rod 9 at the end of the new roller 10 is inserted into the interior of the second connecting tube 6, so that the first connecting rod 405 corresponds to the position of the first connecting tube 404, the handle 402 is rotated in the opposite direction, the vertical plate 5 is opposite to the above-mentioned movement direction, the vertical plate 5 drives the first connecting tube 404 to move, the first connecting tube 404 is sleeved on the outer wall of the first connecting rod 405, and the replacement of the roller 10 is completed. After the roller 10 is worn out, it is convenient to disassemble and replace the roller 10.

[0028] Working principle:

[0029] When measuring the dynamometer of the chassis of a motor vehicle, the wheels of the vehicle move between two groups of rollers 10. Two groups of rollers 10 are provided, and the two groups of rollers 10 are connected through a toothed belt pulley 7 and a toothed belt 8. The toothed belt pulley 7 is externally connected to the output end of the motor. When the motor is turned on, the two groups of rollers 10 can rotate, and the chassis can be measured (the specific dynamometer principle is the same as that in an improved chassis dynamometer with patent number CN216012555U). The rollers 10 are arranged inside the bracket 2, and a spring 13 is installed at the lower end of the bracket 2. Due to the heavy gravity of the vehicle itself, when the vehicle moves to the upper end of the rollers 10, the bracket 2 is driven to move downward, that is, the spring 12 is gradually compressed, which can have a certain buffering effect on the vehicle, and the compression range of the spring 13 is small, and it can be quickly restored, which does not affect its dynamometer work;

[0030] Dynamometer cooling stage:

[0031] The toothed belt pulley 7 drives the second connecting cylinder 6 to rotate, the second connecting cylinder 6 drives the second connecting rod 9 to rotate, the second connecting rod 9 drives the roller 10 to rotate, the roller 10 drives the first connecting rod 405 to rotate, the first connecting rod 405 drives the first connecting cylinder 404 to rotate, the first connecting cylinder 404 drives the second gear 304 to rotate, the second gear 304 drives the first gear 303 to rotate, the first gear 303 drives the rotating rod 301 to rotate, the rotating rod 301 drives the fan 302 to rotate, and the fan 302 rotates to dissipate heat and cool down the inside of the dynamometer, and no additional driving source or power supply is required during cooling, and no additional energy is consumed when dissipating heat from the dynamometer;

[0032] Drum replacement phase:

[0033] After long-term use, when the drum 10 is worn out and needs to be replaced, the corresponding handle 402 is turned, and the handle 402 drives the screw 401 to rotate, and the screw 401 drives the screw nut 403 to move, and the screw nut 403 drives the vertical plate 5 to slide, and the vertical plate 5 drives the first connecting tube 404 to move, and the first connecting tube 404 is separated from the first connecting rod 405, and the drum 10, the first connecting rod 405 and the second connecting rod 9 are removed for replacement, and the second connecting rod 9 at the end of the new drum 10 is inserted into the interior of the second connecting tube 6, so that the first connecting rod 405 corresponds to the position of the first connecting tube 404, and the handle 402 is turned in the opposite direction. The vertical plate 5 is opposite to the above-mentioned movement direction, and the vertical plate 5 drives the first connecting tube 404 to move, and the first connecting tube 404 is sleeved on the outer wall of the first connecting rod 405, and the replacement of the drum 10 is completed. After the drum 10 is worn out, it is convenient to disassemble and replace the drum 10. Example

[0034] Refer to the attached Figure 1-6 : In this embodiment, an improved motor vehicle chassis dynamometer, the disassembly mechanism 4 further includes a rubber sleeve 4a1, the rubber sleeve 4a1 is wrapped around the outer wall of the handle 402, and the rubber sleeve 4a1 protects the friction between the hand and the handle 402;

[0035] Due to the effect of the rubber sleeve 4a1 , when the user turns the handle 402 , the user's hand contacts the handle 402 through the rubber sleeve 4a1 , and the rubber sleeve 4a1 protects the friction between the hand and the handle 402 .

[0036] Working principle:

[0037] When the user turns the handle 402 , the user's hand contacts the handle 402 through the rubber sleeve 4 a 1 , and the rubber sleeve 4 a 1 protects the friction between the hand and the handle 402 .

[0038] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. An improved motor vehicle chassis dynamometer, comprising a frame (1) and a bracket (2), wherein the frame (1) is slidably connected to the bracket (2), and wherein: A disassembly mechanism (4) is arranged above the bracket (2), a vertical plate (5) is slidably connected to the bracket (2), a cooling mechanism (3) is arranged inside the vertical plate (5), a second connecting cylinder (6) is rotatably connected inside the bracket (2) via a bearing, a toothed belt pulley (7) is fixed to the end of the second connecting cylinder (6), and both of the toothed belt pulleys (7) are meshed and connected to a toothed belt (8).

2. The improved motor vehicle chassis dynamometer according to claim 1, characterized in that: The cooling mechanism (3) comprises a rotating rod (301), the outer wall of which is rotatably connected to the vertical plate (5) via a bearing, one end of the rotating rod (301) being fixedly connected to a fan (302), the other end of the rotating rod (301) being fixedly connected to a first gear (303), and the first gear (303) being meshingly connected to a second gear (304).

3. The improved motor vehicle chassis dynamometer according to claim 1, characterized in that: The disassembly mechanism (4) comprises a lead screw (401) and a first connecting tube (404); the outer walls at both ends of the lead screw (401) are rotatably connected to the bracket (2) via bearings; a handle (402) is fixedly connected to the end of the lead screw (401); a lead screw nut (403) is threadedly connected to the outer wall of the lead screw (401); the outer wall of the lead screw nut (403) is fixedly connected to the vertical plate (5); the outer wall of the first connecting tube (404) is rotatably connected to the vertical plate (5) via a bearing; the end of the first connecting tube (404) is fixedly connected to the second gear (304); and the interior of the first connecting tube (404) is slidably connected to a first connecting rod (405).

4. The improved vehicle chassis dynamometer according to claim 1, characterized in that: A second connecting rod (9) is slidably connected inside the second connecting tube (6), a roller (10) is fixedly connected to the end of the second connecting rod (9), and the roller (10) is fixedly connected to the end of the first connecting rod (405).

5. The improved vehicle chassis dynamometer according to claim 1, characterized in that: A sleeve (11) is fixedly connected to the interior of the frame (1), a slide rod (12) is slidably connected to the interior of the sleeve (11), and an end of the slide rod (12) is fixedly connected to the bracket (2).

6. The improved vehicle chassis dynamometer according to claim 5, characterized in that: A spring (13) is sleeved on the outer walls of the sleeve (11) and the slide rod (12), and two ends of the spring (13) are fixedly connected to the frame (1) and the bracket (2) respectively.

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