WO2011110061A1

WO2011110061A1 - Vehicle shock absorber test-bed with sine transmission device

Info

Publication number: WO2011110061A1
Application number: PCT/CN2011/070538
Authority: WO
Inventors: 谢伟东
Original assignee: 浙江工业大学
Priority date: 2010-03-11
Filing date: 2011-01-24
Publication date: 2011-09-15
Also published as: CN101793613A; CN101793613B

Abstract

A vehicle shock absorber test-bed with a sine transmission device is provided. The test-bed comprises a base (1), vertical columns (2a, 2b) set on the base (1), a cross beam (3) set on the vertical columns (2a, 2b), and an upper fixture set on the cross beam. A rotation shaft of a crank disk (6) is connected with a transmission device. The transmission device is connected with an electric motor. A crank shaft (7) is set on the crank disk (6), and the shaft center of the crank shaft is positioned in an eccentric position of the crank disk. The vehicle shock absorber test-bed also comprises a sine transmission device. The sine transmission device comprises a main sliding block (8) and an auxiliary sliding block (9). One end of the auxiliary sliding block (9) is provided with a bearing seat hole. A bearing is arranged between the bearing seat hole and the crank shaft. The other end of the auxiliary sliding block (9) is connected with the transverse guide rail of the main sliding block (8) through a linear rolling guide rail and can slide left and right. The main sliding block (8) is sleeved on the base (1) or the vertical columns (2a, 2b) and can slide up and down. The test-bed can remove the mechanism kinematic error of the prior shock absorber test-bed and has the advantages of high reliability, convenience of manufacturing and repairing and a long service life.

Description

Vehicle damper test bench with sinusoidal transmission

The invention relates to a shock absorber test bench for performance test of a motor vehicle damper such as an automobile or a railway vehicle

Background technique

The damper test rig is one of the key equipment in the production process of vehicle dampers such as automobiles and railway vehicles. So far, the damper test bench developed in China has adopted a crank-link mechanism as a sinusoidal excitation motion generator (see Chinese Patent 95226272. X, 200820160048. 9 Theoretically, the crank-link mechanism does not produce sinusoidal motion.

The crank-link mechanism is widely used as an excitation mechanism in the damper test rig because of its simple implementation, strong bearing capacity and close to the movement law of the sinusoidal mechanism. However, the resulting motion error of the mechanism has been plaguing the test accuracy of the damper test rig, causing the distortion of the dynamometer and often obscuring the defects of the damper under test. Journal of Liaoning Institute of Technology, No.1, 2003, Wang Tianli, et al., “Analysis of Compensation and Compensation Measures for Shock Absorber Test Bench”, attempting to solve the problem of mechanism motion error by correcting the original data collected by the test system. The computational process is complicated and increases the cost of software development. More importantly, it can only reduce and not eliminate the mechanism motion error. In addition, in recent years, there have been some published papers and postgraduate thesis studies that solve the problem of mechanism motion error by correcting the raw data collected by the test system.

Summary of the invention

In order to overcome the problem that the test results of the existing damper test rig cannot eliminate the motion error of the mechanism, the present invention provides a mechanism for completely eliminating the aforementioned mechanism.

Replacement page (Article 26) Shock absorber test bench with sinusoidal transmission for dynamic error, long machine life, and easy manufacturing and maintenance.

The technical solution adopted by the present invention to solve the technical problem thereof is:

A vehicle damper test bench using a sinusoidal transmission device includes a base, a column is mounted on the frame, a beam is mounted on the column, a clamp is mounted on the beam, and a crank disk is mounted in the frame a crankshaft, a transmission, and an electric motor, wherein a crankshaft of the crankshaft is coupled to a transmission, the transmission is coupled to an electric motor, the crankshaft is mounted on a crankshaft, and an axle of the crankshaft is located on the crankshaft The eccentric position, the vehicle damper test stand further includes a sinusoidal transmission device, the sinusoidal transmission device includes a main slider and a sub-slider, and one end of the sub-slider is provided with a bearing housing hole, and the bearing housing hole A bearing is disposed between the crankshaft and the crankshaft, and the other end of the sub-slider is connected to the main slider by a linear rolling guide, and the main slider is slidably mounted on the base or the column. The main slider is provided with a lower clamp that cooperates with the upper clamp to mount the vehicle damper test piece.

Further, the linear rolling guide includes a lateral slider and a lateral rail, and an upper end of the sub-slider is fixedly connected to the lateral slider, and the lateral slider is slidably fitted on the lateral rail, the lateral rail Fixed connection to the lower end of the main slider.

Alternatively, the linear rolling guide includes a lateral slider and a lateral rail, and the upper end of the sub-slider is fixedly connected to the lateral rail, and the lateral slider is slidably fitted on the lateral rail, and the lateral sliding The block is fixedly connected to the lower end of the main slider.

Still further, the upper portion of the main slider is fixedly coupled to the longitudinal slider, and the longitudinal rail is fixedly coupled to the base, and the longitudinal slider is slidably fitted on the longitudinal rail.

Alternatively, the upper portion of the main slider is fixedly connected to the longitudinal rail, and the longitudinal slider is fixedly connected to the base, and the longitudinal rail is slidably fitted on the longitudinal slider. Or the: the machine base is provided with a vertical guide sleeve disposed above and below, and the upper portion of the main slider is a guide post, and the guide post can be vertically slidably fitted in the longitudinal guide sleeve.

Or alternatively, the main slider is provided with a longitudinal guide sleeve, and the base is provided with a guide post, and the longitudinal guide sleeve is slidably fitted on the guide post.

Further, a linear rolling guide sleeve or a friction reducing guide sleeve is disposed between the guide post and the longitudinal guide sleeve.

The technical idea of the present invention is as follows: The rotary motion of the motor output drives the crank disk to rotate at a constant speed, and the eccentric crank shaft on the crank disk drives the sub-slider to move through the bearing, and the sub-slider drives the main slider to straight up and down through the linear rolling guide. The reciprocating motion finally realizes that the clamp on the main slider drives one end of the damper to reciprocate linearly up and down, and the up and down linear reciprocating motion of one end of the damper is expanded in time coordinate to be a sinusoidal curve.

The technical idea of the present invention further includes: extending a main slider of the sinusoidal transmission to a sufficiently high position through a pillar and connecting with the upper clamp, and setting a lower clamp at a lower portion of the base, and sinusoidal excitation by the upper clamp Movement, it is also possible to test the vehicle damper; in addition, the sinusoidal transmission can be placed above a sufficiently high base, and the lower end of the main slide is provided with an upper clamp, which is arranged at the lower part of the base The lower clamp can also test the vehicle damper by the sinusoidal excitation motion of the upper clamp. In addition, the upper and lower sinusoidal transmissions can be set in a sufficiently high base, respectively, through the upper and lower clamps. The sinusoidal excitation motion realizes the double acting fatigue test of the vehicle damper.

A sinusoidal transmission device capable of meeting the sinusoidal excitation motion requirements of the damper test rig is designed, which can completely eliminate the mechanism motion error of the prior art, and has the advantages of long mechanism life, low manufacturing cost and convenient maintenance.

The beneficial effects of the present invention are mainly manifested in: capable of completely eliminating the existing damper test bench The mechanism motion error of the excitation mechanism can produce high-precision sinusoidal excitation motion, which is of great significance for improving the product performance quality testing and testing technology level of the vehicle damper industry. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic illustration of one embodiment of a damper test rig employing a sinusoidal transmission.

Fig. 2 is a schematic view showing the structure of another embodiment of a damper test stand using a sinusoidal transmission.

Fig. 3 is a schematic view showing the structure of still another embodiment of a damper test stand using a sinusoidal transmission.

Fig. 4 is a schematic view showing the construction of still another embodiment of the damper test stand using the sinusoidal transmission.

detailed description

The invention is further described below in conjunction with the drawings.

Embodiment 1 Referring to Figure 1, a vehicle damper test stand using a double-rail sinusoidal transmission includes a base 1 on which guide posts 2a and 2b are mounted, on the guide posts 2a and 2b The cross member 3 is mounted on the beam 3, and the upper clamp 4 is provided with a crank disk 6, a crank shaft 7, a transmission device and an electric motor. The rotation shaft of the crank plate 6 is connected with a transmission device. The device is coupled to an electric motor, the crank shaft 7 is mounted on a crank disk 6, the axis of the crank axle is located at an eccentric position of the crank disk 6, and the vehicle damper test stand further includes a sinusoidal transmission device. The sinusoidal transmission device includes a main slider 8 and a sub-slider 9 . The lower end of the sub-slider 9 has a bearing housing hole 16 , and a bearing 17 is disposed between the bearing housing hole 16 and the crank shaft 7 . The other end of the sub-slider 9 and the main slider 8 are linearly rolled The movable rails are slidably coupled to each other, and the linear rolling guides include a lateral slider 10a and a lateral rail 10b. The upper end of the secondary slider 9 is fixedly coupled to the lateral slider 10a, and the lateral rail 10b and the main slider 8 are The lower end is fixedly connected, and the lateral slider 10a is slidably fitted to the lateral rail 10b. Of course, the lateral slider 10a can also be formed as a part with the sub-slider 9, and the lateral rail 10b and the main slider 8 are formed as one piece.

The linear rolling guide may include a lateral slider 10a and a lateral rail 10b. The sub-slider 9 is fixedly connected to the lateral rail 10b, and the lateral slider 10a is fixedly connected to the main slider 8. The lateral rail 10b is slidably fitted to the lateral slider 10a.

The main slider 8 is fixedly coupled to the longitudinal sliders 11a and 12a, and the longitudinal rails lib and 12b are fixedly coupled to the base 1, and the longitudinal sliders 11a and 12a are respectively fitted on the longitudinal rails lib and 12b and are associated with the main The slider 8 slides up and down.

The lateral rails 10b and the longitudinal rails lib and 12b are spatially arranged perpendicular to each other, i.e., the linear rolling rails and the longitudinal rails do not necessarily intersect, but spatially, the two are staggered vertically.

The main slider 8 is provided with a lower jig 5 which cooperates with the upper jig 4 on the beam 3 for mounting the vehicle damper test piece.

In this embodiment, the lateral slider 10a and the lateral rail 10b constitute a slider type linear rolling guide assembly, and the longitudinal sliders 11a and 12a are respectively associated with the longitudinal rail lib and

The 12b constitutes two slider-type linear rolling guide assemblies, which are available from a range of products from specialist manufacturers.

The working process of the embodiment is as follows: the rotary motion of the motor output drives the crank disk 6 to rotate at a constant speed, and the eccentric crank shaft 7 on the crank disk 6 drives the sub-slider 9 to pass the bearing, and the sub-slider 9 passes the horizontal direction. The guide rail 10b and the lateral slider 10a drive the main slider 8 The upper and lower lines reciprocate linearly, and finally the lower end of the damper is linearly reciprocated by the clamp on the lower clamp, and the upper and lower linear reciprocating motion of the lower end of the damper is expanded in time coordinate to be a sinusoidal curve.

Example 2

Referring to FIG. 2, a vehicle damper test stand using a single-rail sinusoidal transmission device includes a base 1 on which a guide post 2 is mounted, and a beam 3 is mounted on the guide post 2, the beam 3 is provided with an upper clamp 4, in which the crank disk 6, the crank shaft 7, the transmission device and the electric motor are mounted, the rotating shaft of the crank disk 6 is connected with a transmission device, and the transmission device is connected with an electric motor, The crankshaft 7 is mounted on a crank disk 6 having an axis centered at an eccentric position of the crank disk 6. The vehicle damper test stand further includes a sinusoidal transmission device including a main slide a block 8 and a sub-slider 9, a lower end of the sub-slider 9 is provided with a bearing housing hole 16, and a bearing 17 is disposed between the bearing housing hole 16 and the crank shaft 7, and the other end of the sub-slider 9 The main slider 8 is connected to the main slider 8 so as to be slidably coupled to the left and right by a linear rolling guide. The linear rolling guide includes a lateral slider 10a and a lateral rail 10b. The upper end of the secondary slider 9 is fixedly coupled to the lateral slider 10a. Lateral rail 10b and main slide Fixedly connected to the lower end 8, the left and right lateral slider 10a is slidably mounted on the sleeve transverse rail 10b. Of course, the lateral slider 10a can also be formed as a part with the sub-slider 9, and the lateral rail 10b and the main slider 8 are formed as one piece.

The following structure may also be adopted: the linear rolling guide includes a lateral slider 10a and a lateral rail 10b, the secondary slider 9 is fixedly connected to the lateral rail 10b, and the lateral slider 10a is fixedly connected with the main slider 8 The lateral rail 10b is slidably fitted to the lateral slider 10a.

The upper portion of the main slider 8 is a longitudinal rail, and the longitudinal slider group 13a, 13b, 13c And 13d are fixedly connected to the base 1, and the longitudinal rails on the main slider 8 are fitted in the longitudinal slider groups 13a, 13b, 13c and 13d, and slide up and down with the main slider 8.

The lateral rails 10b are spatially perpendicular to the longitudinal rails on the main slider 8.

The main slider 8 is provided with a lower mounting member 5 for engaging the upper clamp 4 on the beam 3 for mounting the specimen holder.

In this embodiment, the lateral slider 10a and the lateral rail 10b constitute a slider type linear rolling guide assembly, and the longitudinal sliders 13a, 13b, 13c and 13d and the longitudinal rails on the main slider 8 constitute another Slide-type linear rolling guide assemblies, these components are available from a range of products from professional manufacturers.

Embodiment 3 Referring to FIG. 3, a vehicle damper test stand using a double guide column type sinusoidal transmission includes a base 1 on which guide posts 2a and 2b are mounted, the guide posts 2a and 2b The upper beam 3 is disposed on the beam 3, and the upper clamp 4 is disposed on the beam 3. The crankset 6, the crankshaft 7, the transmission device and the electric motor are mounted in the base 1, and the rotating shaft of the crank disk 6 is connected with the transmission device. The transmission device is connected to the motor, the crank shaft 7 is mounted on the crank plate 6, the axis of the crank shaft 7 is located at an eccentric position of the crank disk 6, and the vehicle damper test stand further includes a sinusoidal transmission device. The sinusoidal transmission device includes a main slider 8 and a sub-slider 9 . The lower end of the sub-slider 9 has a bearing housing hole 16 , and a bearing 17 is disposed between the bearing housing hole 16 and the crank shaft 7 . The other end of the sub-slider 9 and the main slider 8 are slidably coupled to each other by a linear rolling guide, and the linear rolling guide includes a lateral slider 10a and a lateral rail 10b, and the upper end of the sub-slider 9 is horizontally The slider 10a is fixedly connected, and the lateral rail 10b is fixed to the lower end of the main slider 8. Connecting, the lateral slider 10a can slide left and right The ground is placed on the lateral rail 10b. Of course, the lateral slider 10a can also be formed as a part with the sub-slider 9, and the lateral rail 10b and the main slider 8 are formed as one piece.

Alternatively, the linear rolling guide includes a lateral slider 10a and a lateral rail 10b, the secondary slider 9 is fixedly connected to the lateral rail 10b, and the lateral slider 10a is fixedly connected with the main slider 8, the lateral direction The guide rail 10b is slidably fitted to the lateral slider 10a.

The main slider 8 is provided with two longitudinal guide sleeves 8a and 8b (not shown in FIG. 8b). The base 1 is provided with two guide posts 2a and 2b, and the longitudinal guide sleeves 8a and 8b are provided. They are respectively fitted on the guide columns 2a and 2b and slide up and down with the main slider 8. Straight rolling guide sleeves 14a and 14b are provided between the guide posts 2a and 2b and the longitudinal guide sleeves 8a and 8b, and the linear rolling guide sleeves 14a and 14b are fixedly coupled to the longitudinal guide sleeves 8a and 8b of the main slider 8. At the office.

The lateral rails 10b and the guide columns 2a and 2b are spatially arranged perpendicular to each other. The main slider 8 is provided with a lower jig 5 which cooperates with the upper jig 4 on the beam 3 for mounting the test piece holder.

In this embodiment, the guide posts 2a and 2b and the linear rolling guide sleeves 14a and 14b constitute two linear rolling guide pillar assemblies, wherein the linear rolling guide bushings can be obtained from a series of products provided by a professional manufacturer; The lateral slider 10a and the lateral rail 10b constitute a slider type linear rolling guide assembly which can be purchased from a series of products provided by a professional manufacturer.

The main slider 8 is provided with a lower clamp 5, and the cross beam 3 is provided with an upper clamp 4 for mounting various clamps for mounting the shock absorber test piece ( Including electric clamps, pneumatic clamps, etc.).

The working process of this embodiment is as follows: the rotary motion of the motor output drives the crank disk 6 to rotate at a constant speed, and the eccentric crank shaft 7 on the crank disk 6 drives the sub-slider 9 through the bearing. As a translation, the sub-slider 9 drives the main slider 8 to reciprocate up and down linearly through the lateral rail 10b and the lateral slider 10a, and finally drives the lower end of the damper (test piece) to reciprocate up and down linearly, the damper The upper and lower linear reciprocating motion at the lower end is a sinusoidal curve when expanded in time coordinates.

Example 4

Referring to FIG. 4, a vehicle damper test bench using a single-guide column sinusoidal transmission device includes a base 1 on which a guide post 2 is mounted, and a beam 3 is mounted on the guide post 2, The cross member 3 is provided with an upper clamp 4, in which the crank disk 6, the crank shaft 7, the transmission device and the electric motor are mounted, and the rotating shaft of the crank disk 6 is connected with a transmission device, and the transmission device is connected with the motor. The crankshaft 7 is mounted on a crank disk 6. The axle center of the crankshaft 7 is located at an eccentric position of the crank disk 6. The vehicle damper test stand further includes a sinusoidal transmission device including a main a slider 8 and a sub-slider 9, a lower end of the sub-slider 9 is provided with a bearing housing hole 16, and a bearing 17 is disposed between the bearing housing hole 16 and the crank shaft 7, and the sub-slider 9 is further One end and the main slider 8 are slidably connected to each other by a linear rolling guide. The linear rolling guide includes a lateral slider 10a and a lateral rail 10b, and the upper end of the sub-slider 9 is fixedly connected with the lateral slider 10a. Horizontal rail 10b and main slide Fixedly connected to the lower end 8, the left and right lateral slider 10a is slidably mounted on the sleeve transverse rail 10b. Of course, the lateral slider 10a can also be formed as a part with the sub-slider 9, and the lateral rail 10b and the main slider 8 are formed as one piece.

Alternatively, the linear rolling guide includes a lateral slider 10a and a lateral rail 10b, the secondary slider 9 is fixedly connected to the lateral rail 10b, and the lateral slider 10a is fixedly connected with the main slider 8, the lateral direction The guide rail 10b is slidably fitted to the lateral slider 10a. The base 1 is provided with a longitudinal guide sleeve 11 , and the main slider 8 is provided with a guide post. The guide post on the main slide 8 is set in the longitudinal guide sleeve 11 and is connected with the main slider 8 . slide. A linear rolling guide sleeve 15a and 15b is disposed between the guide post on the main slider 8 and the longitudinal guide sleeve 11, and the linear rolling guide sleeves 15a and 15b are fixedly coupled to the longitudinal guide sleeve 11 on the base 1.

The lateral rails 10b and the guide posts on the main slider 8 are spatially arranged perpendicular to each other. The main slider 8 is provided with a lower mounting member 5 for engaging the upper clamp 4 on the beam 3 for mounting the specimen holder.

In this embodiment, the guide post and the linear rolling guide sleeves 15a and 15b on the main slider 8 constitute a linear rolling guide pillar assembly, wherein the linear rolling guide sleeve can be purchased from a series of products provided by a professional manufacturer; The lateral slider 10a and the lateral rail 10b constitute a slider type linear rolling guide assembly which can be purchased from a series of products provided by a professional manufacturer.

The working process of the embodiment is as follows: the rotary motion of the motor output drives the crank disk 6 to rotate at a constant speed, and the eccentric crank shaft 7 on the crank disk 6 drives the sub-slider 9 to pass the bearing, and the sub-slider 9 passes the horizontal direction. The guide rail 10b and the lateral slider 10a drive the main slider 8 to reciprocate up and down linearly, and finally drive the lower end of the damper (test piece) to reciprocate up and down linearly, and the upper and lower linear reciprocating motion of the lower end of the damper is in time coordinate Expanding is a sinusoid.

Claims

Claim

A vehicle damper test bench using a sinusoidal transmission device, comprising a base, a column mounted on the base, a beam mounted on the column, an upper clamp is arranged on the beam, and the frame is mounted a crank disk, a crank shaft, a transmission, and an electric motor, wherein a crank shaft of the crank plate is coupled to a transmission, the transmission device is coupled to an electric motor, the crank shaft is mounted on a crank plate, and an axis of the crank shaft is located at the crankshaft The eccentric position of the crank disk is characterized in that: the vehicle damper test stand further comprises a sinusoidal transmission device, the sinusoidal transmission device comprises a main slider and a sub-slider, and one end of the sub-slider is provided with a bearing housing hole a bearing is disposed between the bearing housing hole and the crank shaft, and the other end of the auxiliary slider and the main slider are slidably connected to each other by a linear rolling guide, and the main slider can be slidably arranged On the base or the column, the main slider is provided with a lower clamp that cooperates with the upper clamp to mount the vehicle damper test piece.

2. The vehicle damper test stand using a sinusoidal transmission according to claim 1, wherein: said linear rolling guide comprises a lateral slider and a lateral rail, and an upper end of said sub-slider is fixed to a lateral slider The lateral slider is slidably fitted on the lateral rail, and the lateral rail is fixedly connected to the lower end of the main slider.

3. The vehicle damper test stand using a sinusoidal transmission according to claim 1, wherein: the linear rolling guide comprises a lateral slider and a lateral rail, and an upper end of the sub-slider is fixedly connected to the lateral rail. The lateral slider is slidably fitted on the lateral rail, and the lateral slider is fixedly connected to the lower end of the main slider.

4. The vehicle damper test stand using a sinusoidal transmission device according to any one of claims 1 to 3, wherein: an upper portion of the main slider is fixedly connected to the longitudinal slider, and a longitudinal guide rail is fixedly connected to the base. The longitudinal slider is slidably fitted on the longitudinal rail.

5. The vehicle damper test stand using a sinusoidal transmission according to any one of claims 1 to 3, wherein: an upper portion of the main slider is fixedly connected to the longitudinal rail, and a longitudinal slider is fixedly connected to the base. The longitudinal rails are slidably fitted up and down on the longitudinal slider.

6. The vehicle damper test stand using a sinusoidal transmission device according to any one of claims 1 to 3, wherein: the machine base is provided with a longitudinal guide sleeve disposed above and below, and an upper portion of the main slider is a guide post, the guide post is slidably fitted in the longitudinal guide sleeve.

7. The vehicle damper test stand using a sinusoidal transmission device according to claim 13, wherein: the main slider is provided with a longitudinal guide sleeve, and the base is provided with a guide pillar. The longitudinal guide sleeve is slidably fitted on the guide post.

A vehicle damper test stand using a sinusoidal transmission according to claim 6, wherein: a linear rolling guide sleeve or a friction reducing guide sleeve is disposed between the guide post and the longitudinal guide sleeve.

A vehicle damper test stand using a sinusoidal transmission according to claim 7, wherein: a linear rolling guide sleeve or a friction reducing guide sleeve is disposed between the guide post and the longitudinal guide sleeve.