CN115924409A - Deviation correcting device and method for steel belt - Google Patents
Deviation correcting device and method for steel belt Download PDFInfo
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- CN115924409A CN115924409A CN202211517091.7A CN202211517091A CN115924409A CN 115924409 A CN115924409 A CN 115924409A CN 202211517091 A CN202211517091 A CN 202211517091A CN 115924409 A CN115924409 A CN 115924409A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to the field of automobile detection equipment, and particularly discloses a deviation rectifying device and a deviation rectifying method for a steel belt. The steel belt deviation correcting device comprises two adjusting units, wherein the two adjusting units are respectively positioned on two sides of a driven wheel, each adjusting unit comprises a connecting rod, a pushing piece, a fixed seat and a swinging seat, the swinging seats are hinged with the fixed seats through balls, and the pushing pieces are connected with the fixed seats through balls; the two connecting rods are respectively connected with the two fixed seats in a rotating way. A method for correcting the deviation of a steel strip comprises the following steps: step 1: detecting the position of the steel belt, and calculating the offset of the steel belt; and 2, step: when the offset of the steel belt is larger than N, the end part of the driven wheel close to the steel belt is pushed to one side far away from the driving wheel. The deviation correcting device and the deviation correcting method for the steel belt can adjust the position of the steel belt running at a high speed in the test process, and improve the test safety and the running reliability of the steel belt.
Description
Technical Field
The invention relates to the field of automobile detection equipment, in particular to a deviation rectifying device and a deviation rectifying method for a steel belt.
Background
When the whole automobile of the automobile is designed and produced, the test needs to be carried out after the whole automobile is assembled, the whole automobile test based on road simulation is a vital test, and the tests mainly test the main performances of the automobile, such as dynamic property, fuel economy (oil consumption), multi-working-condition emission, electric vehicle endurance mileage, whole automobile engine cooling and heat dissipation capacity, and the like, and the tests of continuous climbing of the whole automobile on steep slopes and hills, constant-speed continuous downhill simulation (II type and IIA type), and the like. The traditional whole vehicle test is carried out on an outdoor road, but along with the development of vehicle technology, the test requires higher precision and more used devices, the test on the road can cause that the precision is easily influenced by various factors in the outdoor environment and cannot be ensured, the road construction cost is high, the test safety cannot be guaranteed, and various detection devices are difficult to use because of high-speed movement of the vehicle, so the test is more prone to be carried out in a laboratory at present, and special devices are required to be connected with the vehicle to simulate the driving of the vehicle.
Because the test is more convenient, the cost is lower and the measuring accuracy is higher, the degree of difficulty is littleer etc. reason, adopt chassis dynamometer machine to support the car at present usually, simulation automobile driving state detects, but add the simulation of turning resistance again at present mostly on the basis of simulation road longitudinal resistance, this must need dynamometer machine system to follow the wheel rotation, and the drum quality is big, it is very difficult to want whole rotation to get up, its inertia is big simultaneously, also be difficult to adapt to the quick demand of current electrodynamic response, so dynamometer machine system follows the wheel rotation and is difficult to realize. In order to solve the above problems, some dynamometers detect the car with the tires removed, but this causes the transmission direction and the working direction of the acting force to be different from those of the car when the car runs on the actual road, the detection precision is also affected, and if the precision is to be improved, a high-precision and real tire model needs to be established, which causes the detection cost to be higher.
Based on the above problems, i developed a new dynamometer system, which includes an annular steel belt, during testing, the tire of the automobile is dropped on the steel belt, and the tire is supported by the steel belt, and when the tire rotates, the steel belt moves along with the steel belt, so that the tire moves relative to the steel belt, but the automobile does not move relative to the external environment.
In the actual use process, however, the driving wheel and the driven wheel which support and drive the steel belt to transmit are found to have the condition of non-parallel axial directions due to the manufacturing and mounting errors of the driving wheel and the driven wheel, and the steel belt can generate deviation in the operation process; meanwhile, the steel belt can be subjected to external load, if the steel belt is used for tire testing, the steel belt can be subjected to transverse load from a tire, and when the external acting force on the steel belt is greater than the maximum friction force generated by the pretightening force of the steel belt, the steel belt can also deflect, so that a steel belt deviation correcting device is needed, and the position of the steel belt can be adjusted in time.
Disclosure of Invention
The invention aims to provide a steel belt deviation rectifying device and a deviation rectifying method, which are used for adjusting the position of a steel belt running at a high speed in a test process, and improving the test safety and the running reliability of the steel belt.
In order to achieve the purpose, the invention adopts the following technical scheme: a deviation correcting device for a steel belt comprises two adjusting units, wherein the two adjusting units are respectively positioned on two sides of a driven wheel, each adjusting unit comprises a connecting rod, a pushing piece, a fixed seat and a swinging seat, the swinging seat is hinged with a fixed seat ball, the pushing pieces are connected with the fixed seat balls and used for pushing the fixed seat to swing, and the connecting position of the swinging seat and the fixed seat deviates from the pushing direction of the pushing pieces; the two connecting rods are respectively connected with the two fixing seats in a rotating way.
The beneficial effect of this scheme does:
the traditional steel belt is mainly used for conveying products on a production line, the running speed of the traditional steel belt is usually less than 2m/s, and under the condition of low-speed running, the steel belt is simple in stress and is not easy to shift transversely. However, the technical scheme is mainly directed to automobile testing equipment, particularly to a tire testing bench, because an automobile needs to simulate a running state, the rotating speed of automobile tires reaches 60m/s at most, in order to avoid that the automobile tires run forwards relative to a steel belt due to the fact that the rotating speed of the automobile tires is higher than that of the steel belt, the automobile tires drop from the steel belt, the steel belt needs to be transmitted at the same high speed, and under the condition of high-speed transmission, the steel belt is difficult to adjust transversely, so that the deviation of the steel belt is corrected.
Two connecting rods in this scheme respectively with be used for supporting the steel band and the both ends coaxial coupling of the follow driving wheel of transmission, after the steel band takes place the skew, promote the fixing base through the impeller and can drive from the driving wheel swing through the connecting rod, make the swing from the driving wheel, because the steel band is by the tensioning from the driving wheel, after from the driving wheel swing, the tensioning force of driving wheel both ends to the steel band changes, thereby make the steel band slide to one side that the tensioning force reduces, so this scheme need not directly can adjust the steel band with the steel band contact, the adjustment is safer, and examine time measuring to the car that weighs is bigger, can also promote the tensioning effect to the improvement steel band to one side of keeping away from the action wheel from the driving wheel through the impeller, avoid the steel band crooked.
Furthermore, the adjusting unit also comprises a base, the pushing piece is hinged with the base, and the pushing piece is hinged with the fixed seat through a ball.
The beneficial effect of this scheme does: because the impeller can rotate relative to the fixed seat, the impeller in the scheme can adopt a structure of linear pushing such as an oil cylinder, and the like, and has simple structure and convenient control.
Further, the pushing piece is an oil cylinder or an air cylinder.
The beneficial effect of this scheme does: the pushing piece in the scheme can provide enough acting force for the fixed seat to swing, and the swing angle and speed of the fixed seat can be controlled more conveniently by controlling the amount or pressure of the introduced hydraulic oil or compressed gas.
Furthermore, the pushing pieces of the two adjusting units are respectively a first pushing piece and a second pushing piece, and are provided with at least one servo valve, and a rod cavity of the first pushing piece and a rodless cavity of the second pushing piece are communicated with the same outlet of the servo valve; the rodless cavity of the first pushing piece and the rod cavity of the second pushing piece are also communicated with the same outlet of the servo valve.
The beneficial effect of this scheme does: the rod cavity is a cavity where the push rod of the first pushing piece is located, and the rodless cavity is a cavity where the push rod is not arranged on the first pushing piece. The scheme can quickly correct the deviation of the steel belt under the condition that the steel belt moves at a high speed through the differential connection of the oil cylinders.
Further, the adjusting unit further comprises a sensor electrically connected with the pushing member.
The beneficial effect of this scheme does: the position of the steel belt can be detected in real time through the sensor, and the deviation can be timely corrected after the steel belt deviates.
Furthermore, a cylindrical roller bearing is arranged between one of the connecting rods and the fixed seat.
The beneficial effect of this scheme does: when the deviation is corrected, the rotation angle of the driven wheel is about 1 degree at most, and the steel belt can be reversely reset by adjusting a small angle. When the driven wheel rotates, the cylindrical roller bearing can provide an axial movement space of several millimeters for the connecting rod, and the axial length variation between the driven wheel shaft and the connecting bearing seat of the driven wheel in the inclination process of the driven wheel is compensated.
The invention also discloses a steel belt deviation rectifying method, which adopts any one of the steel belt deviation rectifying devices and comprises the following steps:
step 1: detecting the position of the steel belt, and calculating the offset of the steel belt;
and 2, step: when the offset of the steel belt is larger than N, the end part of the driven wheel close to the steel belt is pushed to one side far away from the driving wheel.
The beneficial effect of this scheme does: n in the scheme is a constant larger than 0, and can be actually determined according to factors such as the width of the steel belt, the weight of the automobile, the running speed and the like, so that the automobile can not fall off from the steel belt. The N is used as the basis for judging whether the deviation needs to be corrected or not, so that the deviation can be prevented from being corrected when the steel belt has extremely small deviation, the deviation needs to be corrected for many times in the whole testing process, and the workload of an operator is reduced.
Further, the step 1 also comprises the steps of determining the load loaded on the steel belt as a steel belt pretightening force F, a pump station oil supply pressure P, the area A1 of the cross section of the rodless cavity of the pushing piece and the area A2 of the cross section of the rod cavity of the pushing piece, and calculating the pressure T of the oil return port by adopting a formula F = (P + T) (A1-A2);
The beneficial effect of this scheme does: when the pressure of an oil return opening of the pushing piece is T, the driven wheel can tension the steel belt and prevent the steel belt from being excessively stretched, and the service life of the steel belt is effectively prolonged.
And further, step 2 simultaneously pushes the end part of the driven wheel at the far side of the steel strip to the side close to the driving wheel.
The beneficial effect of this scheme does: follow driving wheel swing back in this scheme, increase from the pretightning force of driving wheel one end to the steel band, the pretightning force of the other end to the steel band reduces for the pretightning force that the steel band received is unchangeable or the range of variation is less, when guaranteeing the tensioning steel band, avoids the steel band by overstretching, thereby prolongs the life of steel band, further promotes the reliability of steel band operation.
Drawings
FIG. 1 is a perspective view of a steel strip deviation rectifying device according to an embodiment of the present invention;
FIG. 2 is a schematic view of the driven wheel of FIG. 1 being oscillated;
FIG. 3 is a diagram illustrating steps of a deviation rectifying method for steel strip according to an embodiment of the present invention.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a base 1, a driven wheel 11, a pushing piece 2, a connecting rod 3, a swinging seat 4, a bulge 41 and a steel belt 5.
Examples
A steel belt deviation correcting device is shown in figures 1 and 2 and comprises two adjusting units, wherein the two adjusting units are respectively located on the front side and the rear side of a driven wheel 11, each adjusting unit comprises a connecting rod 3, a pushing piece 2, a fixed seat, a swinging seat 4, a base 1 and a sensor, and the fixed seats and the base 1 are integrally formed. The connecting rod 3 is connected with the rotating shafts at the front end and the rear end of the driven wheel 11 through a coupler, and the rotating shaft connected with the driven wheel 11 can be used as the connecting rod 3 in practical implementation.
In this embodiment, the two swing seats 4 are bearing seats, and a bearing is disposed between the connecting rod 3 and the swing seat 4, specifically, in this embodiment, a ball bearing is disposed between the connecting rod 3 on the rear side and the swing seat 4 on the rear side, and a cylindrical roller bearing is disposed between the connecting rod 3 on the front side and the swing seat 4 on the front side. In this embodiment, the pushing member 2 on the rear side is denoted as a first pushing member 2, the pushing member 2 on the front side is denoted as a second pushing member 2, both the first pushing member 2 and the second pushing member 2 are oil cylinders, and taking the second pushing member 2 as an example, the left end of the second pushing member 2 is hinged to the base 1. The lower end of the swing seat 4 is hinged with the fixed seat ball, and the upper end is integrally formed with a bulge 41; the push rod of the second pusher 2 faces to the right and is ball-hinged with the protrusion 41. The servo valve is provided with a servo valve with two outlets, the two outlets of the servo valve are respectively an outlet A and an outlet B, a rodless cavity of the first pushing piece 2 and a rod cavity of the second pushing piece 2 are communicated with the outlet A at the same time, the rod cavity of the first pushing piece 2 and the rodless cavity of the second pushing piece 2 are communicated with the outlet B at the same time, and the servo valve in the embodiment is also communicated with an overflow valve.
The two sensors are respectively located at the front side and the rear side of the steel belt 5, specifically, the sensors in the embodiment adopt pressure sensors, the pressure sensors at the front side are taken as an example, the pressure sensors are located below the front end of the steel belt 5, and measuring heads of the pressure sensors are abutted against the bottom of the steel belt 5. The pressure sensor in this embodiment is electrically connected to a controller, the controller is electrically connected to the servo valve, and when the pressure sensor on the front side does not detect pressure, an electrical signal is sent to the controller, and the controller sends an electrical signal to the two pushing members 2 to control the push rod of the pushing member 2 on the rear side to extend out. The push rod of the pusher 2 on the front side is retracted. In actual implementation, the sensor may be a distance sensor, a position sensor, or the like, as long as the position of the steel strip 5 can be detected.
The embodiment also discloses a steel belt deviation rectifying method, which adopts the steel belt deviation rectifying device and is shown in fig. 3, and comprises the following steps:
step 1: determining a load loaded on a steel belt 5 as a pretightening force F of the steel belt 5, an oil supply pressure P of a pump station, an area A1 of a cross section of a rodless cavity of a pushing member 2 and an area A2 of a cross section of a rod cavity of the pushing member 2, wherein the pretightening force F of the steel belt 5 is determined according to factors such as the speed, the wind resistance and the elastic modulus of the steel belt 5 of an automobile to be tested, and in practical implementation, the pretightening force F of the steel belt 5 corresponding to the speed in the current environment can be determined by gradually increasing the speed or reducing the pretightening force F of the steel belt 5 under the condition that the steel belt 5 cannot be bent when the automobile runs on the steel belt 5;
after the measurement, the oil return port pressure T is calculated by adopting a formula F = (P + T) (A1-A2), and the actual oil return port pressure T of the pushing piece 2 is measured 0 When | (T) 0 -T) is greater than 5% of T, T being introduced into or discharged from the push member 2 0 Adjusting to be the same as T;
then detecting the position of the steel strip 5, and calculating the offset of the steel strip;
step 2: when the offset of the steel belt is larger than N, the end part of the driven wheel 11 close to the steel belt 5 is pushed to the side far away from the driving wheel, and the end part of the driven wheel 11 far away from the steel belt 5 is pushed to the side close to the driving wheel. Specifically, N in the present invention is a constant greater than 0 predetermined according to the width of the steel strip 5, and it is sufficient to ensure that the automobile does not slide off the steel strip 5.
When the actual pressure of the oil return port is adjusted in the step 1, the push rods of the first pushing piece 2 and the second pushing piece 2 extend or retract along with the actual pressure, so that the driven wheel 11 is driven to translate, the steel belt 5 is tensioned or loosened, the steel belt 5 is kept in a tensioned state but not in an over-stretched state, and the service life of the steel belt 5 is prolonged.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (9)
1. The utility model provides a be used for steel band deviation correcting device which characterized in that: the device comprises two adjusting units, wherein the two adjusting units are respectively positioned at two sides of a driven wheel, each adjusting unit comprises a connecting rod, a pushing part, a fixed seat and a swinging seat, the swinging seat is hinged with a fixed seat ball, the pushing part is connected with the fixed seat ball and used for pushing the fixed seat to swing, and the connecting position of the swinging seat and the fixed seat deviates from the pushing direction of the pushing part; the two connecting rods are respectively connected with the two fixing seats in a rotating way.
2. A deviation rectifying device for steel strip according to claim 1, characterized in that: the adjusting unit further comprises a base, the pushing piece is hinged with the base, and the pushing piece is hinged with the fixing seat through a ball.
3. A deviation rectifying device for steel strip according to claim 2, characterized in that: the pushing piece is an oil cylinder or an air cylinder.
4. A deviation rectifying device for steel strip according to claim 3, characterized in that: the pushing pieces of the two adjusting units are respectively a first pushing piece and a second pushing piece, and are provided with at least one servo valve, and a rod cavity of the first pushing piece and a rodless cavity of the second pushing piece are communicated with the same outlet of the servo valve; the rodless cavity of the first pushing piece and the rod cavity of the second pushing piece are also communicated with the same outlet of the servo valve.
5. A deviation rectifying device for steel strip according to claim 1, characterized in that: the adjustment unit further comprises a sensor electrically connected to the push member.
6. A deviation rectifying device for steel strip according to claim 1, characterized in that: a cylindrical roller bearing is arranged between one of the connecting rods and the fixed seat.
7. A deviation rectifying method for steel belts is characterized in that: use according to any one of claims 3 to 6 for a steel strip deviation correction device, comprising the steps of:
step 1: detecting the position of the steel belt, and calculating the offset of the steel belt;
and 2, step: when the offset of the steel belt is larger than N, the end part of the driven wheel close to the steel belt is pushed to one side far away from the driving wheel.
8. The steel strip deviation rectifying method according to claim 7, wherein: step 1, determining a load loaded on a steel belt as a steel belt pretightening force F, a pump station oil supply pressure P, an area A1 of a cross section of a rodless cavity of a pushing piece and an area A2 of a cross section of a rod cavity of the pushing piece, and calculating an oil return port pressure T by adopting a formula F = (P + T) (A1-A2);
step 2 also comprises measuring the actual pressure T of the oil return port 0 And the actual pressure T of the oil return port is adjusted 0 Controlling the temperature to be between T and 1.05 times of T.
9. The steel strip deviation rectifying method according to claim 7, wherein: and 2, simultaneously pushing the end part of the driven wheel, far away from the steel belt, to one side close to the driving wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211517091.7A CN115924409A (en) | 2022-11-29 | 2022-11-29 | Deviation correcting device and method for steel belt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211517091.7A CN115924409A (en) | 2022-11-29 | 2022-11-29 | Deviation correcting device and method for steel belt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115924409A true CN115924409A (en) | 2023-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211517091.7A Pending CN115924409A (en) | 2022-11-29 | 2022-11-29 | Deviation correcting device and method for steel belt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115924409A (en) |
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2022
- 2022-11-29 CN CN202211517091.7A patent/CN115924409A/en active Pending
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