Chassis dynamometer with variable inertia
By designing a jaw-type electromagnetic clutch and braking mechanism, the versatility and reliability of the chassis dynamometer have been improved, solving the integration problem of testing needs for light and heavy vehicles, and improving testing efficiency and equipment durability.
Patent Information
- Application Number
- CN202520475592.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-18
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-03-18
AI Technical Summary
Existing variable inertia chassis dynamometers have limited functionality and cannot simultaneously meet the testing needs of both light and heavy vehicles. Furthermore, friction plate clutches are prone to slippage during loading, resulting in low reliability.
The design employs a jaw-type electromagnetic clutch and braking mechanism. By controlling the working state of one or two flywheels, it integrates the testing requirements of light and heavy vehicles. Combined with the contact between the braking mechanism and the outer circumference of the flywheel, the contact area is increased to improve braking reliability. Synchronous rotation of the roller assembly is achieved through a synchronous pulley and coupling, thereby improving dynamometer accuracy.
It improves the versatility and testing efficiency of the equipment, reduces the waste of multiple devices, enhances the durability and braking reliability of the equipment, reduces vibration and wear, and extends the service life.
Smart Images
Figure CN223815234U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle detection technical field, especially to a variable inertia chassis dynamometer. BACKGROUND
[0002] The chassis dynamometer is a kind of automobile power test equipment, simulates running resistance by roller device, reproduces vehicle translational mass inertia by inertia device, and then real-time data acquisition is carried out by high-precision torque / speed sensor.But the inertia provided by dynamometer needs to be different for light vehicle and heavy vehicle, and most of existing dynamometers can only preset one inertia, cannot meet the detection needs of two vehicle types simultaneously.The existing variable inertia chassis dynamometer in market mostly selects friction plate clutch, and has the defect of easy slippage when loading.
[0003] The utility model solves the technical problems that: how to solve the problems, such as single function and low reliability, of the existing variable inertia chassis dynamometer. UTILITY MODEL CONTENTS
[0004] In order to overcome the insufficient of prior art, the utility model provides a variable inertia chassis dynamometer, which has the characteristics of simple structure, good versatility and high reliability.
[0005] The utility model adopts the technical scheme that: a variable inertia chassis dynamometer, including frame, roller mechanism and drive motor respectively installed on the frame, the roller mechanism includes the first roller group and the second roller group that are arranged in parallel, the first roller group is transmissionally connected with the output end of drive motor, the second roller group is transmissionally connected with the first roller group through transmission mechanism, and the end of the second roller group is provided with transmission shaft;
[0006] It further includes first flywheel, second flywheel, clutch and eddy current machine that are sleeved on the outer surface of transmission shaft, the first flywheel and clutch are fixedly connected with transmission shaft, bearing is arranged between the second flywheel and transmission shaft, the clutch is arranged on one side of second flywheel, the clutch is toothed type electromagnetic clutch, and brake mechanism is further installed on the frame, and the brake mechanism is arranged on one side of the outer circumferential surface of second flywheel.
[0007] The variable inertia chassis dynamometer of the application can integrate different requirements of light and heavy vehicle dynamometer into the same equipment by controlling one flywheel or two flywheels to work simultaneously, improve the versatility of the equipment, effectively improve the detection efficiency of the detection station, and reduce the waste of manpower and material resources caused by the installation of multiple equipment due to different requirements; moreover, the toothed electromagnetic clutch can withstand heavy load and impact without slipping, and can also efficiently and stably transmit torque, so that the dynamometer is more durable and reliable; in addition, the brake mechanism is arranged on one side of the outer periphery of the second flywheel, and the brake is realized by the contact between the brake mechanism and the outer periphery of the second flywheel, which can increase the contact area of the brake mechanism and the second flywheel, make the brake more reliable, and also improve the stress condition of the second flywheel during braking to avoid deformation of the second flywheel.
[0008] In some embodiments, the brake mechanism comprises a telescopic power member and a brake disc, the telescopic power member is installed on the rack, and the brake disc is normal to the outer periphery of the second flywheel, the telescopic power member drives the brake disc to contact or separate from the outer periphery of the second flywheel.
[0009] By adopting the above technical scheme, the brake disc is normal to the outer periphery of the second flywheel, which can provide a larger braking force arm to ensure the braking effect.
[0010] In some embodiments, the brake mechanism further comprises a mounting bracket, the mounting bracket is detachably connected with the rack, and the telescopic power member is installed on the mounting bracket.
[0011] By adopting the above technical scheme, the mounting bracket can facilitate the installation of the telescopic power member and the brake disc.
[0012] In some embodiments, one end of the mounting bracket close to the second flywheel is provided with a mounting surface, and the mounting surface is normal to the outer periphery of the second flywheel.
[0013] By adopting the above technical scheme, the difficulty of installing and debugging the brake disc can be reduced, and the installation process is simplified.
[0014] In some embodiments, the first roller group, the second roller group and the eddy current machine are fixed on the rack through a vertical bearing seat.
[0015] By adopting the above technical scheme, the stability of the first roller group, the second roller group and the eddy current machine can be improved during work, the vibration and wear are reduced, and the service life is prolonged.
[0016] In some embodiments, the transmission mechanism comprises a first synchronous wheel, a second synchronous wheel and a synchronous belt, the first synchronous wheel is connected with the first roller group, the second synchronous wheel is connected with the second roller group, and the synchronous belt is engaged with the first synchronous wheel and the second synchronous wheel.
[0017] The first roller group and the second roller group can be synchronously rotated, and the power measurement accuracy is improved.
[0018] In some embodiments, the first roller group comprises two coaxially arranged first rollers, the two first rollers are connected through a first connecting shaft, the first connecting shaft is connected with the two first rollers through a second coupling, and the driving motor is connected with one of the first rollers through a first coupling.
[0019] In some embodiments, the second roller group comprises two coaxially arranged second rollers, the two second rollers are connected through a second connecting shaft, the second connecting shaft is connected with the two second rollers through a third coupling, and one of the second rollers is connected with the first roller away from the driving motor through a transmission mechanism.
[0020] In some embodiments, the first flywheel and the second flywheel are arranged at the same end of the second roller group, and the clutch is arranged between the first flywheel and the second flywheel and connected with the first flywheel through a fourth coupling. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 It is a structure schematic view of the variable inertia chassis dynamometer of a preferred embodiment of the present application.
[0022] Figure 2 It is a structure schematic view of the variable inertia chassis dynamometer of a preferred embodiment of the present application. Figure 1 It is another view structure schematic view of the variable inertia chassis dynamometer.
[0023] Figure 3 It is a structure schematic view of the brake mechanism and the second flywheel in the variable inertia chassis dynamometer. Figure 1 It is a structure schematic view of the brake mechanism and the second flywheel in the variable inertia chassis dynamometer.
[0024] Figure 4 It is an axial section structure schematic view of the clutch and the second flywheel in the variable inertia chassis dynamometer. Figure 1
[0025] In the figure: 100, variable inertia chassis dynamometer; 10, rack; 20, roller mechanism; 21, first roller group; 211, first roller; 212, first connecting shaft; 213, first coupling; 214, second coupling; 22, second roller group; 221, second roller; 222, second connecting shaft; 223, third coupling; 224, transmission shaft; 225, fourth coupling; 30, driving motor; 40, first flywheel; 50, second flywheel; 51, bearing; 60, clutch; 70, eddy current machine; 80, brake mechanism; 81, telescopic power piece; 82, brake disc; 83, mounting bracket; 831, mounting surface; 90, transmission mechanism; 91, first synchronous wheel; 92, second synchronous wheel; 93, synchronous belt. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0027] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. When an element is referred to as being "comprise a plurality of" it can be any number of two or more. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are used for illustrative purposes only and are not intended to be limiting.
[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this description, the terms "therefore" and "because" are used in their plain, ordinary sense and are not used in a conjunctive sense (i.e., to mean because of the fact, but not because of the hypothesis). The term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
[0029] Please refer to Figures 1 to 4 A variable inertia chassis dynamometer 100 of a preferred embodiment of the present application comprises a frame 10, a roller mechanism 20 and a driving motor 30 mounted on the frame 10 respectively, the roller mechanism 20 comprises a first roller group 21 and a second roller group 22 arranged in parallel, the first roller group 21 is in transmission connection with the output end of the driving motor 30, the second roller group 22 is in transmission connection with the first roller group 21 through a transmission mechanism 90, and the end portion of the second roller group 22 is provided with a transmission shaft 224.
[0030] It also comprises a first flywheel 40, a second flywheel 50, a clutch 60 and an eddy current machine 70 sleeved on the outer surface of the transmission shaft 224, the first flywheel 40 and the clutch 60 are fixedly connected with the transmission shaft 224, a bearing 51 is arranged between the second flywheel 50 and the transmission shaft 224, the clutch 60 is arranged on one side of the second flywheel 50, the clutch 60 is a toothed electromagnetic clutch 60, and a brake mechanism 80 is also mounted on the frame 10 and arranged on one side of the outer circumferential surface of the second flywheel 50.
[0031] The chassis dynamometer 100 of the present application can integrate the different requirements of light and heavy vehicle dynamometer into the same equipment by controlling one or two flywheels through the clutch 60, improve the versatility of the equipment, effectively improve the detection efficiency of the detection station, and reduce the waste of manpower and material resources caused by the installation of multiple equipment due to different requirements; moreover, the electromagnetic clutch 60 can withstand heavy load and impact without slipping, and can also stably transmit torque, so that the dynamometer is more durable and durable; in addition, the brake mechanism 80 is arranged on one side of the outer periphery of the second flywheel 50, and the brake is realized by the contact between the brake mechanism 80 and the outer periphery of the second flywheel 50, which can increase the contact area between the brake mechanism 80 and the second flywheel 50, and the brake is more reliable, and the stress condition of the second flywheel 50 during braking can be improved to avoid deformation of the second flywheel 50.
[0032] It should be noted that the end of the second roller group 22 is provided with a transmission shaft 224, which means that the transmission shaft 224 can be arranged at only one end of the second roller group 22 or at both ends of the second roller group 22.
[0033] As shown in Figure 3 Specifically, the brake mechanism 80 includes an extension power piece 81 and a brake disc 82, the extension power piece 81 is installed on the rack 10, the brake disc 82 is parallel to the normal direction of the outer periphery of the second flywheel 50, and the extension power piece 81 drives the brake disc 82 to contact or separate from the outer periphery of the second flywheel 50. The brake disc 82 is parallel to the normal direction of the outer periphery of the second flywheel 50, which can provide a larger brake force arm to ensure the braking effect. Compared with the way of arranging the brake disc 82 on the inner side of the second flywheel 50, the present application arranges the brake disc 82 parallel to the normal direction of the outer periphery of the second flywheel 50, which can increase the contact area and provide a larger braking force. Compared with the way of arranging the brake disc 82 on the end of the second flywheel 50, the stress condition of the second flywheel 50 during braking can be improved to avoid deformation of the second flywheel 50.
[0034] Optionally, the extension power piece 81 can be one of a pneumatic cylinder, a hydraulic cylinder, an electric push rod or a motor.
[0035] Further, the brake mechanism 80 further includes a mounting bracket 83, the mounting bracket 83 is detachably connected with the rack 10, and the extension power piece 81 is installed on the mounting bracket 83. By arranging the mounting bracket 83, the extension power piece 81 and the brake disc 82 can be conveniently installed.
[0036] Still further, one end of the mounting bracket 83 close to the second flywheel 50 is provided with a mounting surface 831, and the mounting surface 831 is parallel to the normal direction of the outer periphery of the second flywheel 50. Arranging the mounting surface 831 parallel to the normal direction of the outer periphery of the second flywheel 50 can reduce the difficulty of installing and debugging the brake disc 82, and simplify the installation process.
[0037] As Figure 1 With Figure 2 As shown in the drawings, preferably, the first roller group 21, the second roller group 22 and the vortex machine 70 are fixed on the frame 10 through vertical bearing seats. When working, the stability of the first roller group 21, the second roller group 22 and the vortex machine 70 can be improved, the vibration and wear can be reduced, and the service life can be prolonged.
[0038] As Figure 1 As shown in the drawings, in an embodiment, the transmission mechanism 90 includes a first synchronous wheel 91, a second synchronous wheel 92 and a synchronous belt 93, the first synchronous wheel 91 is connected with the first roller group 21, the second synchronous wheel 92 is connected with the second roller group 22, and the synchronous belt 93 is engaged with the first synchronous wheel 91 and the second synchronous wheel 92. The synchronous rotation of the first roller group 21 and the second roller group 22 can be ensured, and the measurement accuracy can be improved.
[0039] In other embodiments, the transmission mechanism 90 can also be provided with a chain wheel matched with a chain, a gear set engaged, etc. to realize synchronous transmission.
[0040] Specifically, the first roller group 21 includes two coaxially arranged first rollers 211, the two first rollers 211 are connected through a first connecting shaft 212, the first connecting shaft 212 is connected with the two first rollers 211 through a second coupling 214, and one of the first rollers 211 is connected with the driving motor 30 through a first coupling 213. By connecting the two first rollers 211 through the first connecting shaft 212, the distance between the two first rollers 211 can be adjusted according to the requirements, different wheelbase vehicles can be adapted, and the flexibility is high. In addition, when maintaining, the parts can be individually disassembled or replaced, the maintenance difficulty is reduced, and the maintenance cost is reduced.
[0041] Further, the second roller group 22 includes two coaxially arranged second rollers 221, the two second rollers 221 are connected through a second connecting shaft 222, the second connecting shaft 222 is connected with the two second rollers 221 through a third coupling 223, one of the second rollers 221 is connected with the first roller 211 away from the driving motor 30 through the transmission mechanism 90, and the first roller 211 and the second roller 221 are arranged in parallel.
[0042] In an embodiment, the first flywheel 40 and the second flywheel 50 are arranged at the same end of the second roller group 22, the clutch 60 is arranged between the first flywheel 40 and the second flywheel 50, and the clutch 60 is connected with the first flywheel 40 through a fourth coupling 225.
[0043] In other embodiments, the first flywheel 40 and the second flywheel 50 can also be arranged at two ends of the second roller group 22 respectively.
[0044] As Figure 1As shown in the embodiment, the rack 10 is welded by section bar and steel plate.
[0045] As Figure 4 As shown, optionally, the cog-type electromagnetic clutch 60 is fixed with the second flywheel 50 by bolts.
[0046] When measuring, when the detection object is a light vehicle, the clutch 60 is powered off and separated from the second flywheel 50, no longer driving the second flywheel 50 to rotate, at the same time, the brake mechanism 80 drives the brake disc 82 to extend and contact with the outer circumferential surface of the second flywheel 50, so that the second flywheel 50 remains stationary, at this time, the dynamometer only has the first flywheel 40 working, and the running provides the correlation to meet the light vehicle measurement requirement; when the detection object is a heavy vehicle, the clutch 60 is powered on and combined with the second flywheel 50 to drive the second flywheel 50 to rotate, so as to increase the basic inertia of the dynamometer, at the same time, the brake mechanism 80 drives the brake disc 82 to retract and separate from the second flywheel 50, the first flywheel 40 and the second flywheel 50 rotate at the same time, so as to provide the inertia required for the heavy vehicle measurement.
[0047] Finally, it should be noted that the above only for the preferred examples of the present application, and not for limiting the present application, although the foregoing detailed description of the present application, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the scope of protection of the present application.
Claims
1. A chassis dynamometer with variable inertia, comprising a frame (10), a roller mechanism (20) and a drive motor (30) respectively mounted on the frame (10), wherein the roller mechanism (20) comprises a first roller group (21) and a second roller group (22) arranged in parallel, the first roller group (21) being drivenly connected to the output end of the drive motor (30), the second roller group (22) being drivenly connected to the first roller group (21) via a transmission mechanism (90), and a transmission shaft (224) being provided at the end of the second roller group (22), characterized in that: It also includes a first flywheel (40), a second flywheel (50), a clutch (60), and an eddy current machine (70) sleeved on the outer surface of the drive shaft (224). The first flywheel (40) and the clutch (60) are fixedly connected to the drive shaft (224). A bearing (51) is provided between the second flywheel (50) and the drive shaft (224). The clutch (60) is located on one side of the second flywheel (50). The clutch (60) is a jaw-type electromagnetic clutch (60). A braking mechanism (80) is also installed on the frame (10). The braking mechanism (80) is located on one side of the outer circumferential surface of the second flywheel (50).
2. The chassis dynamometer with variable inertia according to claim 1, characterized in that, The braking mechanism (80) includes a telescopic power component (81) and a brake disc (82). The telescopic power component (81) is mounted on the frame (10). The brake disc (82) is parallel to the normal direction of the outer peripheral surface of the second flywheel (50). The telescopic power component (81) drives the brake disc (82) to contact or separate from the outer peripheral surface of the second flywheel (50).
3. The chassis dynamometer with variable inertia according to claim 2, characterized in that, The braking mechanism (80) also includes a mounting bracket (83), which is detachably connected to the frame (10), and the telescopic power component (81) is mounted on the mounting bracket (83).
4. The chassis dynamometer with variable inertia according to claim 3, characterized in that, The mounting bracket (83) has a mounting surface (831) at one end near the second flywheel (50), and the mounting surface (831) is parallel to the normal of the outer peripheral surface of the second flywheel (50).
5. The chassis dynamometer with variable inertia according to claim 1, characterized in that, The first roller assembly (21), the second roller assembly (22), and the vortex generator (70) are fixed on the frame (10) by vertical bearing seats.
6. The chassis dynamometer with variable inertia according to claim 1, characterized in that, The transmission mechanism (90) includes a first synchronous pulley (91), a second synchronous pulley (92), and a synchronous belt (93). The first synchronous pulley (91) is connected to the first roller group (21), the second synchronous pulley (92) is connected to the second roller group (22), and the synchronous belt (93) meshes with the first synchronous pulley (91) and the second synchronous pulley (92).
7. The chassis dynamometer with variable inertia according to claim 1, characterized in that, The first roller assembly (21) includes two coaxially arranged first rollers (211), the two first rollers (211) are connected by a first connecting shaft (212), the first connecting shaft (212) is connected to the two first rollers (211) by a second coupling (214), and the drive motor (30) is connected to one of the first rollers (211) by a first coupling (213).
8. The chassis dynamometer with variable inertia according to claim 7, characterized in that, The second roller assembly (22) includes two coaxially arranged second rollers (221), which are connected by a second connecting shaft (222). The second connecting shaft (222) is connected to the two second rollers (221) by a third coupling (223). One of the second rollers (221) is connected to the first roller (211) away from the drive motor (30) by a transmission mechanism (90).
9. The chassis dynamometer with variable inertia according to claim 1, characterized in that, The first flywheel (40) and the second flywheel (50) are located at the same end of the second roller assembly (22), and the clutch (60) is located between the first flywheel (40) and the second flywheel (50). The clutch (60) is connected to the first flywheel (40) via a fourth coupling (225).