CN111397875B

CN111397875B - Eccentricity adjusting structure and shock absorber detection device

Info

Publication number: CN111397875B
Application number: CN202010237979.XA
Authority: CN
Inventors: 刘波; 刘海
Original assignee: Sichuan Zhongzhi Rongchuang Technology Co ltd
Current assignee: Sichuan Zhongzhi Rongchuang Technology Co ltd
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2022-03-11
Anticipated expiration: 2040-03-30
Also published as: CN111397875A

Abstract

The invention relates to the technical field of eccentric connection, in particular to an eccentricity adjusting structure which comprises a rotating wheel and an eccentric shaft, wherein the rotating wheel is connected with a sliding block in a sliding manner along the diameter direction, and the eccentric shaft is rotationally connected with the sliding block; be provided with on the runner and be used for driving the gliding hydro-cylinder of slider along runner diameter direction, sliding connection has the piston in the hydro-cylinder, and the piston is fixed with the telescopic link, and the telescopic link is worn out hydro-cylinder and slider fixed connection, and the hydro-cylinder is provided with the adjusting part who is used for adjusting piston position and fixed piston position. The invention also relates to a damper detection device, which comprises a base and a detection table arranged on the base in a sliding manner, wherein the base is also provided with the eccentricity adjusting structure, one end, far away from the rotating wheel, of an eccentric shaft of the eccentricity adjusting structure is rotatably connected with the detection table, and the base is also provided with a driving piece for driving the rotating wheel to rotate. The invention can adjust the eccentricity of the eccentric shaft and the rotating wheel without stopping the machine, and the adjusting speed is high.

Description

Eccentricity adjusting structure and shock absorber detection device

Technical Field

The invention relates to the technical field of eccentric connection, in particular to an eccentricity adjusting structure and a shock absorber detection device.

Background

The shock Absorber (Absorber) is used to suppress the shock when the spring absorbs the shock and then rebounds and the impact from the road surface. The damping device is widely applied to automobiles and is used for accelerating the attenuation of the vibration of a frame and an automobile body so as to improve the driving smoothness of the automobiles.

The performance of the shock absorber needs to be detected and tested before leaving a factory, and the test result can directly check out a good ring of the performance of the shock absorber, so that the safety and reliability of the vehicle are guaranteed. In the test, standard simple harmonic motion excitation is applied to one end of the shock absorber, and then the indicator characteristic, the speed characteristic and the like of the shock absorber are detected. At present, a general damper detection device mainly adopts a motor as a power source in an excitation mode, an output shaft of the motor is connected with a rotating wheel, the rotating wheel is eccentrically connected with an eccentric shaft, one end, far away from the rotating wheel, of the eccentric shaft is connected with a test bed, and the excitation frequency is adjusted by changing the eccentricity of the connection of the eccentric shaft and the rotating wheel.

However, when the excitation frequency is adjusted, the motor needs to be stopped, then the eccentric shaft needs to be detached and then installed at other positions again, the adjustment speed is very slow, and the adjustment without stopping the machine cannot be achieved.

Disclosure of Invention

The invention provides an eccentricity adjusting structure which can quickly adjust the eccentricity between a rotating wheel and an eccentric shaft under the condition that a motor does not stop.

In order to solve the technical problems, the invention adopts the following technical scheme:

an eccentricity adjusting structure comprises a rotating wheel and an eccentric shaft, wherein the rotating wheel is connected with a sliding block in a sliding mode along the diameter direction, and the eccentric shaft is connected with the sliding block in a rotating mode; be provided with on the runner and be used for the drive the gliding hydro-cylinder of runner diameter direction is followed to the slider, sliding connection has the piston in the hydro-cylinder, the piston is fixed with the telescopic link, the telescopic link is worn out the hydro-cylinder with slider fixed connection, the hydro-cylinder is provided with the adjusting part who is used for adjusting piston position and fixed piston position.

Furthermore, an inner cavity is formed in the rotating wheel, a rotating shaft is fixed on a central axis of the rotating wheel, one end, close to the rotating wheel, of the rotating shaft is located in the inner cavity of the rotating wheel, the rotating shaft is arranged in a hollow mode, two ends of the rotating shaft are connected with a first rotating joint and a second rotating joint respectively, and the first rotating joint is located in the inner cavity of the rotating wheel; the piston separates the hydro-cylinder for first grease chamber and second grease chamber, the adjusting part is including being used for the first oil circuit to first grease chamber oil feed or oil extraction and being used for the second oil circuit to second grease chamber oil feed or oil extraction, first oil circuit, second oil circuit wear out through first rotary joint and second rotary joint the pivot, first oil circuit, second oil circuit are connected with the oil pump, the oil pump is used for controlling first oil circuit and second oil circuit defeated oil or oil extraction.

Further, the first oil path comprises a first oil valve arranged in the first oil chamber, a first oil pipe connected between the first oil valve and the first rotary joint, a second oil pipe connected between the first rotary joint and the second rotary joint, and a third oil pipe connected between the second rotary joint and the oil pump; the second oil circuit comprises a second oil valve arranged in the second oil chamber, a fourth oil pipe connected between the second oil valve and the first rotary joint, a fifth oil pipe connected between the first rotary joint and the second rotary joint, and a sixth oil pipe connected between the second rotary joint and the oil pump.

Furthermore, the runner is provided with a sliding groove for the sliding connection of the sliding block, and the oil cylinder is located at one end of the sliding groove in the length direction.

Furthermore, the end part, close to the sliding block, of the oil cylinder is provided with a sealing block, the telescopic rod penetrates through the sealing block to be connected with the sliding block, and the telescopic rod and the sealing block are mechanically sealed.

Furthermore, a sealing ring is arranged in front of the outer side of the piston.

The invention also provides a shock absorber detection device which can rapidly adjust the eccentricity between the rotating wheel and the eccentric shaft under the condition that the motor does not stop.

a bumper shock absorber detection device which characterized in that: the eccentric wheel detecting device comprises a base, a detecting platform arranged on the base in a sliding mode, an eccentricity adjusting structure, a driving piece used for driving the rotating wheel to rotate, and one end, far away from the rotating wheel, of an eccentric shaft of the eccentricity adjusting structure is rotatably connected with the detecting platform.

Further, the driving part comprises a motor, an output shaft of the motor is connected with a gearbox, and the gearbox is in line transmission connection with the rotating wheel.

The invention has the beneficial effects that: this bumper shock absorber detection device can be under the condition of not stopping driving piece the eccentricity of eccentric shaft and runner through eccentricity adjustment structure, and governing speed is very fast, and then improves detection device's detection rate and detection precision.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

FIG. 1 is a front view of the shock absorber testing apparatus of the present invention;

FIG. 2 is a side view of the shock absorber testing device of FIG. 1;

FIG. 3 is an internal schematic view of the eccentricity adjustment structure of FIG. 1;

fig. 4 is an enlarged schematic view of a portion a in fig. 3.

Description of reference numerals: 100. an eccentricity adjustment structure; 110. a rotating wheel; 111. a slider; 112. a chute; 113. a rotating shaft; 114. a first swivel joint; 115. a second swivel joint; 120. an eccentric shaft; 130. an oil cylinder; 131. a piston; 132. a telescopic rod; 133. a sealing block; 134. a first oil chamber; 135. a second oil chamber; 136. a seal ring; 141. a first oil valve; 142. a first oil pipe; 143. a second oil pipe; 144. a third oil pipe; 151. a second oil valve; 152. a fourth oil pipe; 153. a fifth oil pipe; 154. a sixth oil pipe; 160. an oil pump; 200. a damper detection device; 210. a base; 220. a detection table; 230. a gearbox; 240. a drive member.

Detailed Description

Unless defined otherwise, 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 invention belongs; the terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, e.g., the terms "length," "width," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., refer to an orientation or position based on that shown in the drawings, are for convenience of description only and are not to be construed as limiting of the present disclosure.

The terms "including" and "having," and any variations thereof, in the description and claims of this invention and the description of the above figures are intended to cover non-exclusive inclusions; the terms "first," "second," and the like in the description and in the claims, or in the drawings, are used for distinguishing between different objects and not necessarily for describing a particular sequential order. The meaning of "plurality" is two or more unless specifically limited otherwise.

In the description and claims of the present invention and in the description of the above figures, when an element is referred to as being "fixed" or "mounted" or "disposed" or "connected" to another element, it may be directly or indirectly located on the other element. For example, when an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

Furthermore, reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to facilitate understanding of those skilled in the art, the present invention will be further described with reference to the following examples and drawings, which are not intended to limit the present invention.

Examples

As shown in fig. 1 to 4, the shock absorber detecting device 200 provided by the present invention comprises a base 210, a detecting table 220 slidably disposed on the base 210, the base 210 further being provided with an eccentricity adjusting structure 100, the rotating wheel 110 being slidably connected with a sliding block 111 along a diameter direction, the eccentric shaft 120 being rotatably connected with the sliding block 111; the rotating wheel 110 is provided with an oil cylinder 130 for driving the sliding block 111 to slide along the diameter direction of the rotating wheel 110, a piston 131 is connected in the oil cylinder 130 in a sliding manner, an expansion link 132 is fixed on the piston 131, the expansion link 132 penetrates through the oil cylinder 130 to be fixedly connected with the sliding block 111, and the oil cylinder 130 is provided with an adjusting assembly for adjusting the position of the piston 131 and fixing the position of the piston 131; one end of the eccentric shaft 120 of the eccentricity adjusting structure 100, which is far away from the rotating wheel 110, is rotatably connected to the detecting table 220, and the base 210 is further provided with a driving member 240 for driving the rotating wheel 110 to rotate. The damper detection device 200 can directly adjust the eccentricity of the eccentric shaft 120 and the rotating wheel 110 without stopping the driving part 240 through the eccentricity adjusting structure 100, the adjusting speed is high, and the detection speed and the detection precision of the detection device are further improved.

Specifically, the test station 220 is commercially available directly, and the driving member 240 includes a motor having an output shaft connected to a gearbox 230, which is in line drive connection with the wheel 110.

As shown in fig. 3 and 4, an inner cavity is disposed inside the rotating wheel 110, a rotating shaft 113 is fixed on a central axis of the rotating wheel 110, one end of the rotating shaft 113 close to the rotating wheel 110 is located in the inner cavity of the rotating wheel 110, the rotating shaft 113 is disposed in a hollow manner, two ends of the rotating shaft 113 are respectively connected to a first rotating joint 114 and a second rotating joint 115, and the first rotating joint 114 is located in the inner cavity of the rotating wheel 110; piston 131 separates hydro-cylinder 130 for first grease chamber 134 and second grease chamber 135, and first grease chamber 134 is close to slider 111, the adjusting part is including the first oil circuit that is used for to first grease chamber 134 oil feed or oil extraction and the second oil circuit that is used for to second grease chamber 135 oil feed or oil extraction, first oil circuit, second oil circuit wear out through first rotary joint 114 and second rotary joint 115 pivot 113, first oil circuit, second oil circuit are connected with oil pump 160, oil pump 160 is used for controlling first oil circuit and second oil circuit oil delivery or oil extraction. Specifically, the swivel joint can be directly purchased from the market, and the arrangement of the first swivel joint 114 and the second swivel joint 115 can avoid the first oil path and the second oil path from rotating along with the rotating shaft 113, avoid the first oil path and the second oil path from winding, and simultaneously seal the oil paths. In this embodiment, the mode that the motor is mounted on the rotating wheel 110, the output shaft of the motor is connected with the lead screw, the lead screw is connected with the sliding block 111, and the sliding block 111 is driven to move by the rotation of the lead screw is used for controlling the reaction time of the motor which needs a certain time for starting the positive rotation or turning over, and a certain time delay exists for adjusting the eccentricity. The eccentricity adjusting structure 100 adopts the oil cylinder 130 to push the piston 131 to move, so as to drive the sliding block 111 to move, and can respond in time, so that the measurement error of the detection table 220 is not easily caused by response delay. And, through the oil feed and the oil extraction of two oil circuits first grease chamber 134 and second grease chamber 135 of respectively controlling, first grease chamber 134 and second grease chamber 135 coordinate the operation, can stably adjust the position of second slider 111. Meanwhile, because the pressure of the oil in the first oil chamber 134 and the second oil chamber 135 to the piston 131 is much greater than the sum of the centrifugal force of the slider 111 and the resistance of the detection table 220, the slider 111 is not easy to displace after being fixed.

As shown in fig. 3 and 4, the first oil path includes a first oil valve 141 provided to the first oil chamber 134, a first oil pipe 142 connected between the first oil valve 141 and the first rotary joint 114, a second oil pipe 143 connected between the first rotary joint 114 and the second rotary joint 115, and a third oil pipe 144 connected between the second rotary joint 115 and the oil pump 160; the second oil path includes a second oil valve 151 provided in the second oil chamber 135, a fourth oil pipe 152 connected between the second oil valve 151 and the first rotary joint 114, a fifth oil pipe 153 connected between the first rotary joint 114 and the second rotary joint 115, and a sixth oil pipe 154 connected between the second rotary joint 115 and the oil pump 160.

In this embodiment, the rotating wheel 110 is provided with a sliding groove 112 for the sliding connection of the sliding block 111, and the oil cylinder 130 is located at one end of the sliding groove 112 in the length direction. Specifically, the cross section of the sliding groove 112 is i-shaped, the sliding block 111 is in sliding clamping connection with the sliding groove 112, the sliding block 111 is more stable when sliding, and the sliding block 111 is not easy to separate from the rotating wheel 110.

As shown in fig. 4, a sealing block 133 is disposed at an end of the cylinder 130 close to the sliding block 111, the extension rod 132 passes through the sealing block 133 to connect to the sliding block 111, and the extension rod 132 is mechanically sealed with the sealing block 133.

The working principle is as follows:

the output shaft of the motor is connected with a speed changer, the speed changer is connected with a rotating shaft 113, the rotating shaft 113 drives a rotating wheel 110 to rotate, the rotating wheel 110 drives an eccentric shaft 120 to move so as to drive the test bench to move, and the rotating wheel 110 and the eccentric shaft 120 convert the rotating motion of the motor into the linear motion of the test bench; when eccentricity is adjusted, the first oil way discharges oil, the second oil way feeds oil, eccentricity of the sliding block 111 is increased, stroke of the test bench is increased, and otherwise, the eccentricity is reduced; through this bumper shock absorber detection device 200, can adjust the eccentricity of eccentric shaft 120 and runner 110 under the circumstances of not stopping motor work, and then change the stroke of testboard to change test pressure, the governing speed is very fast, and the reaction is nimble, improves detection device's detection rate and detection precision.

The above embodiments are preferred implementations of the present invention, and the present invention can be implemented in other ways without departing from the spirit of the present invention.

Claims

1. The utility model provides an eccentricity adjustment structure, includes runner and eccentric shaft, its characterized in that: the rotating wheel is connected with a sliding block in a sliding mode along the diameter direction, and the eccentric shaft is connected with the sliding block in a rotating mode; the rotating wheel is provided with an oil cylinder for driving the sliding block to slide along the diameter direction of the rotating wheel, a piston is connected in the oil cylinder in a sliding mode, a telescopic rod is fixed on the piston, the telescopic rod penetrates out of the oil cylinder to be fixedly connected with the sliding block, and the oil cylinder is provided with an adjusting assembly for adjusting the position of the piston and fixing the position of the piston;

an inner cavity is formed in the rotating wheel, a rotating shaft is fixed on a central axis of the rotating wheel, one end of the rotating shaft, which is close to the rotating wheel, is located in the inner cavity of the rotating wheel, the rotating shaft is arranged in a hollow mode, two ends of the rotating shaft are respectively connected with a first rotating joint and a second rotating joint, and the first rotating joint is located in the inner cavity of the rotating wheel; the piston divides the oil cylinder into a first oil chamber and a second oil chamber, the adjusting assembly comprises a first oil path for feeding or discharging oil to the first oil chamber and a second oil path for feeding or discharging oil to the second oil chamber, the first oil path and the second oil path penetrate out of the rotating shaft through a first rotary joint and a second rotary joint, the first oil path and the second oil path are connected with oil pumps, and the oil pumps are used for controlling the first oil path and the second oil path to feed or discharge oil;

the runner is provided with a sliding groove for sliding connection of the sliding block, the oil cylinder is located at one end of the sliding groove in the length direction, the cross section of the sliding groove is I-shaped, and the sliding block is connected with the sliding groove in a sliding manner.

2. An eccentricity adjustment structure as set forth in claim 1, wherein: the first oil way comprises a first oil valve arranged in the first oil chamber, a first oil pipe connected between the first oil valve and the first rotary joint, a second oil pipe connected between the first rotary joint and the second rotary joint, and a third oil pipe connected between the second rotary joint and the oil pump; the second oil circuit comprises a second oil valve arranged in the second oil chamber, a fourth oil pipe connected between the second oil valve and the first rotary joint, a fifth oil pipe connected between the first rotary joint and the second rotary joint, and a sixth oil pipe connected between the second rotary joint and the oil pump.

3. An eccentricity adjustment structure as set forth in claim 1, wherein: the end part of the oil cylinder close to the sliding block is provided with a sealing block, the telescopic rod penetrates through the sealing block to be connected with the sliding block, and the telescopic rod and the sealing block are mechanically sealed.

4. An eccentricity adjustment structure as set forth in claim 3, wherein: and a sealing ring is arranged in front of the outer side of the piston.

5. A bumper shock absorber detection device which characterized in that: the eccentricity adjusting mechanism comprises a base and an inspection table arranged on the base in a sliding mode, the base is further provided with an eccentricity adjusting structure according to any one of claims 1 to 4, one end, away from a rotating wheel, of an eccentric shaft of the eccentricity adjusting structure is rotatably connected with the inspection table, and the base is further provided with a driving piece used for driving the rotating wheel to rotate.

6. The shock absorber testing device according to claim 5, wherein: the driving part comprises a motor, an output shaft of the motor is connected with a gearbox, and the gearbox is in line transmission connection with the rotating wheel.