CN115096583A - Rail transit vehicle window wiper transmission mechanism torque fatigue testing device - Google Patents
Rail transit vehicle window wiper transmission mechanism torque fatigue testing device Download PDFInfo
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- CN115096583A CN115096583A CN202210765650.XA CN202210765650A CN115096583A CN 115096583 A CN115096583 A CN 115096583A CN 202210765650 A CN202210765650 A CN 202210765650A CN 115096583 A CN115096583 A CN 115096583A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/025—Test-benches with rotational drive means and loading means; Load or drive simulation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
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Abstract
The invention discloses a torque fatigue testing device for a transmission mechanism of a windscreen wiper of a rail transit vehicle, which comprises a cross beam, a bearing seat, a driving shaft, a driving mechanism, a wiping arm seat, a hydraulic cylinder, a transmission mechanism and an oil tank, wherein the cross beam is connected with the driving shaft; the bearing seat is arranged on the cross beam; the driving shaft is rotatably arranged in the bearing seat; the driving mechanism is arranged at one end of the driving shaft and provides acting force for rotating the driving shaft; the scraping arm seat is sleeved at the other end of the driving shaft and can rotate under the rotating action force of the driving shaft; the hydraulic cylinder is arranged outside one side of the scraping arm seat; the transmission mechanism is arranged between the hydraulic shaft of the hydraulic cylinder and the scraping arm seat and converts the acting force of the rotary motion of the scraping arm seat into the acting force for pushing the hydraulic shaft to move linearly; the oil tank is arranged on one side of the hydraulic cylinder, and a regulating valve and a pressure detection device are arranged on a pipeline connected with the oil tank and the hydraulic cylinder. Compared with the prior art, the invention has the beneficial effects that: the maximum torque and the limit use state of the windscreen wiper transmission mechanism can be effectively detected.
Description
Technical Field
The invention belongs to the field of window wipers, and particularly relates to a torque fatigue test device for a transmission mechanism of a window wiper of a rail transit vehicle.
Background
The wiper is an indispensable important part of the motor train unit, has the function of cleaning the windshield of the motor train unit train, can keep clear driving vision, and is a key part for guaranteeing the high-speed running safety of the motor train unit train in rainy days. As the motor train unit is in a high-speed state in the running process, the using environment condition of the wiper is more complicated, and when the transmission of the wiper is in a problem, great potential safety hazards can appear.
The existing windscreen wiper drives a wiping arm seat provided with a wiping arm to rotate through rotation of an output shaft, so that the windscreen wiper function is realized.
However, a testing device capable of detecting torque fatigue between an output shaft and a wiper arm seat in a wiper transmission mechanism is not developed at present, so that workers often do not have data to rely on judgment when installing, replacing and overhauling the wiper transmission mechanism of the motor train unit. Therefore, firstly, the cost is increased, and secondly, certain potential safety hazards exist.
Disclosure of Invention
The details of one or more embodiments of the invention are set forth in the accompanying drawings and the description below to provide a more thorough understanding of the invention.
The invention provides a torque fatigue testing device for a transmission mechanism of a windscreen wiper of a rail transit vehicle, which is used for detecting the maximum torque and the limit use state of the transmission mechanism of the windscreen wiper and optimizing, upgrading and improving the performance index of the transmission mechanism of the windscreen wiper.
The invention discloses a torque fatigue testing device for a transmission mechanism of a windscreen wiper of a rail transit vehicle, which comprises
A cross beam mounted on the frame;
the bearing seat is arranged on the cross beam;
the driving shaft is rotatably arranged in the bearing seat;
the driving mechanism is arranged at one end of the driving shaft and provides acting force for rotating the driving shaft;
the scraping arm seat is sleeved at the other end of the driving shaft and can rotate under the rotating action force of the driving shaft;
the hydraulic cylinder is arranged outside one side of the scraping arm seat;
the transmission mechanism is arranged between the hydraulic shaft of the hydraulic cylinder and the scraping arm seat and converts the acting force of the rotary motion of the scraping arm seat into the acting force for pushing the hydraulic shaft to move linearly;
the oil tank is arranged on one side of the hydraulic cylinder and is connected with the liquid outlet pipeline through a liquid inlet pipeline, and the liquid inlet pipeline and the liquid outlet pipeline are provided with regulating valves and pressure detection devices; the pressure values obtained by the pressure detection device under different opening sizes are obtained by changing the opening size of the regulating valve, and the resistance moment applied to the scraper arm seat by the transmission mechanism is calculated according to the obtained pressure values.
In some embodiments, the transmission mechanism comprises
The gear is fixedly sleeved outside the scraping arm seat;
and the rack guide rail is meshed with the gear and is connected with a hydraulic shaft of the hydraulic cylinder.
In some embodiments, the transmission mechanism further comprises
And the sliding guide rail is arranged on one side of the cross beam through the cross beam bottom plate and is arranged between the rack guide rail and the cross beam bottom plate.
In some embodiments, the glide rail comprises
The guide rail is arranged below the rack guide rail;
and the guide rail seat is transversely arranged on the bottom plate of the cross beam.
In some embodiments, the transmission mechanism further comprises
The gear guide arm is arranged on the gear and extends outwards by taking the geometric center of the gear as an axis;
the gear guide plate is in an arc plate structure shape, and the geometric center of the gear guide plate is superposed with the geometric center of the gear;
and the guide device is arranged on the gear guide arm and is in sliding clamping connection with two end faces of the gear guide plate.
In some embodiments, the guide device comprises
The first telescopic rod is arranged on the gear guide arm, the tail end of the first telescopic rod is elastically abutted against one surface of the gear guide plate, and a universal ball is arranged at the abutted position of the first telescopic rod;
the second telescopic rod is arranged on the gear guide arm, the tail end of the second telescopic rod extends to the other surface of the gear guide plate and is in elastic butt joint with the other surface of the gear guide plate, and a universal ball is arranged at the butt joint position of the second telescopic rod.
In some embodiments, the drive mechanism comprises
The servo motor, the speed reducer, and the crank, the transmission handle and the rocking handle which are hinged in sequence;
the servo motor is fixedly connected with the crank;
the rocking handle is fixedly connected with the driving shaft.
In some embodiments, the wiper arm mount and the drive shaft are connected by a keyed or expanding sleeve connection or an interference connection.
In some embodiments, the end of the drive shaft that is connected with the scraper arm seat is of a conical structure; the scraping arm seat is provided with a conical groove matched with the conical structure; the conical structure is attached to the conical groove.
In some embodiments, the tapered structure extends through the tapered slot and is provided with a threaded post at its outer end and is securely attached by a nut socket.
In some embodiments, the tapered structure has a plurality of slots uniformly distributed around its circumference.
Compared with the prior art, the invention has the following beneficial effects:
1. the motion simulation through actuating mechanism scrapes the reciprocating swing's motion process of rain ware to the speed of oil feed and oil return between aperture through control governing valve changes hydraulic cylinder and the oil tank, thereby changes the size of the pressure value in the pipeline, and the rethread pressure value calculates drive mechanism and applies the resistance moment size for scraping the arm seat, realizes the maximum torque test and the fatigue test between the arm seat to the drive shaft and scraping.
2. In order to ensure that the transmission mechanism can more effectively convert the acting force of the rotary motion into the acting force of the linear motion, the structure of a gear and a rack guide rail is adopted, and corresponding double guidance is configured, so that the transmission direction of the force is more stably excessive when being changed, and the detection accuracy is ensured.
3. The structure form of the driving shaft and the scraper arm seat is further optimized, and the friction area between the driving shaft and the scraper arm seat is increased by adopting the conical surface, so that the friction force between the driving shaft and the scraper arm seat is improved, the anti-rotation effect is improved, and the upper limit value of the maximum torque is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not limit the invention.
In the drawings:
fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a schematic structural view of the first and second telescopic rods of the present invention.
Fig. 4 is a schematic view showing the construction of the driving shaft and the wiper arm base of the present invention.
Fig. 5 is a schematic perspective view of the driving mechanism of the present invention.
Description of the drawings: the device comprises a cross beam 1, a bearing seat 2, a driving shaft 3, a scraping arm seat 4, a gear 5, a rack guide rail 6, a guide rail 7, a cross beam bottom plate 8, a threaded column 9, a nut seat 10, a hydraulic cylinder 11, a gear guide arm 12, a gear guide plate 13, a first telescopic rod 14, a second telescopic rod 15, a universal ball 16, an oil tank 17, a liquid inlet pipeline 18, a liquid outlet pipeline 19, an adjusting valve 20, a pressure detection device 21, a servo motor 22, a speed reducer 23, a crank 24, a transmission handle 25 and a rocking handle 26.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments provided by the present invention, belong to the protection scope of the present invention.
It is obvious that the drawings in the following description are only examples or embodiments of the invention, from which it is possible for a person skilled in the art, without inventive effort, to apply the invention also in other similar contexts. Moreover, it should be appreciated that such a development effort might be complex and tedious, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, given the benefit of this disclosure, without departing from the scope of this disclosure.
Reference in the specification 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 of ordinary skill in the art that the described embodiments of the present invention can be combined with other embodiments without conflict.
As shown in fig. 1 and 4, the torque fatigue testing device for the transmission mechanism of the windshield wiper of the rail transit vehicle comprises a cross beam 1, a bearing seat 2, a driving shaft 3, a driving mechanism, a wiping arm seat 4, a hydraulic cylinder 11, a transmission mechanism and an oil tank 17. Wherein, the beam 1 is arranged at the middle part of the upper end of the frame; a bearing seat 2 for placing a driving shaft 3 is arranged on the cross beam 1; bearings for supporting the rotation of the driving shaft 3 are arranged at two ends in the bearing seat 2; one end of the driving shaft 3 is provided with a driving mechanism; the other end of the driving shaft 3 is sleeved with a scraping arm seat 4; a hydraulic cylinder 11 is arranged outside one side of the scraping arm seat 4; a transmission mechanism is arranged between the hydraulic shaft of the hydraulic cylinder 11 and the scraping arm seat 4; an oil tank 17 is arranged on one side of the hydraulic cylinder 11; a liquid inlet pipeline 18 and a liquid outlet pipeline 19 are arranged between the liquid cylinder 11 and the oil tank 17 and connected, and a regulating valve 20 and a pressure detection device 21 are arranged on the liquid inlet pipeline 18 and the liquid outlet pipeline 19. The pressure values measured by the pressure detection device 21 under different opening sizes are obtained by changing the opening sizes of the regulating valve, and the resistance moment applied to the arm scraping seat 4 by the transmission mechanism is calculated according to the measured pressure values.
The driving shaft 3 and the wiper arm seat 4 are used as transmission mechanisms of the window wiper and are detection parts for maximum torque test and fatigue test; the scraping arm seat 4 can be driven to rotate under the rotating action force of the driving shaft 3; the rotary acting force on the scraping arm seat 4 driven to rotate is converted into acting force for pushing the hydraulic shaft to do linear motion through a transmission mechanism arranged between the hydraulic shaft of the hydraulic cylinder 11 and the scraping arm seat 4; by controlling the opening of the regulating valve 20, the pressure value in the pipeline is changed, the resistance moment applied to the arm scraping seat 4 is further calculated, and when the driving shaft 3 cannot drive the arm scraping seat 4 to rotate, the maximum torque between the driving shaft 3 and the arm scraping seat 4 is measured. When the pressure detecting device 21 is a pressure gauge, the pressure gauge measures a pressure, and therefore the pressure is required to be converted into a pressure value according to the condition inside the pipe, and then the resisting moment applied to the arm rest 4 is further calculated.
In the process of the above embodiment, the manner of converting the rotational force on the wiper arm base 4 into the force pushing the hydraulic shaft to move linearly may be implemented by using a multi-stage articulated link mechanism. However, it has been found in practical design use that the above structure causes complication of the connection structure and instability in the force transmission process.
In order to solve the above problem, as shown in fig. 1 and 2, the transmission mechanism performs conversion of the transmission direction of force by the cooperation of the gear 5 and the rack rail 6. The gear 5 is fixedly sleeved outside the scraping arm seat 4; the rack guide 6 is engaged with the gear 5 and connected with a hydraulic shaft of the hydraulic cylinder 11. The rack guide rail 6 is driven to do reciprocating linear motion through the reciprocating rotation of the gear 5, so that the force is more directly transmitted to the hydraulic shaft of the hydraulic cylinder 11, and the testing accuracy is improved.
In the above process, a downward force is applied to the gear 5 and the rack guide 6 during the force transmission process, and the rack guide 6 itself cannot be precisely overlapped with the horizontal base line due to gravity, which may cause deviation of the applied force during the force transmission process, thereby affecting the testing accuracy.
In order to solve the above problem, as shown in fig. 4, a sliding guide rail is further added on the basis of the transmission mechanism, and the sliding guide rail is installed on one side of the cross beam through the cross beam bottom plate and is arranged between the rack guide rail and the cross beam bottom plate. Further, the sliding guide rail comprises a guide rail 7 and a guide rail seat; a guide rail 7 installed below the rack guide rail 6; and the guide rail seat is transversely arranged on the beam bottom plate 8. The movement guiding function and the supporting force function for the rack guide 6 are provided by the design.
In the implementation process, as the driving shaft 3 drives the scraper arm seat 4 to rotate, the device inevitably generates mechanical vibration in the movement process, so that the driving shaft 3 and the scraper arm seat 4 may be displaced and deviated in the axial direction, and then the dislocation phenomenon of the gear 5 and the rack guide rail 6 occurs.
As shown in fig. 2 and fig. 3, a gear guide arm 12, a gear guide plate 13 and a guide device are further arranged on the transmission mechanism; the gear guide arm 12 is arranged on the gear 5 and extends outwards by taking the geometric center of the gear 5 as an axis; the gear guide plate 13 is in an arc plate structure shape, and the geometric center of the gear guide plate is coincided with that of the gear 5; the guide device is arranged on the gear guide arm 12 and is in sliding clamping connection with two end faces of the gear guide plate 13. The gear 5 is limited not to shift in the axial direction under the action of the guide device, so that the stability of the equipment in the running state is ensured, and the detection precision is guaranteed.
In the implementation process, the device is used as a detection device, so that the detection part can be continuously replaced, certain offset can be generated on the gear 5 inevitably in the installation and fixing processes, and the friction force on one surface of the guide device is suddenly increased due to excessive offset, so that the subsequent test is inevitably influenced.
In order to solve the above problem, as shown in fig. 3, the guide means comprises a first telescopic rod 14 and a second telescopic rod 15; the first telescopic rod 14 is arranged on the gear guide arm 12, the tail end of the first telescopic rod is elastically abutted against one surface of the gear guide plate 13, and a universal ball 16 is arranged at the abutted position of the first telescopic rod 14; the second telescopic rod 15 is provided on the gear guide arm 12, and the end thereof extends to the other surface of the gear guide plate 13 and elastically abuts against the other surface, and a universal ball 16 is provided at the abutting position of the first telescopic rod 14. The telescopic structure of the first telescopic rod 14 and the second telescopic rod 15 and the elastic components arranged inside, such as springs and the like, provide corresponding elastic buffer spaces, and the sliding and rolling connection through the universal ball 16 greatly reduces the contact area between the gear guide plate 13 and the elastic components, so that the friction force between the gear guide plate and the elastic components is reduced, and the influence on detection is reduced.
In some embodiments, the driving mechanism comprises a servo motor 22, a reducer 23, and a crank 24, a transmission handle 25, and a rocking handle 26, which are hinged to each other in sequence; the servo motor 22 is fixedly connected with the crank 24; the rocking handle 26 is fixedly connected with the driving shaft 3. Since the driving mechanism is to simulate the reciprocating swing action of the wiper blade, if a belt connection or the like is adopted, the driving shaft 3 cannot swing rotationally, and the reciprocating swing of the wiper blade is difficult to simulate. In the embodiment, the servo motor 22 drives the crank 24 to rotate, so as to drive the transmission handle 25 to move, further realize the reciprocating swing of the rocking handle 26 by taking the geometric center of the rocking handle as an axis, and well simulate the use state of the windscreen wiper, and the speed reducer 23 can adjust the speed of the servo motor, so as to further improve the fatigue test speed of the structure dynamics.
In the above embodiment, mainly for the purpose of detecting the maximum transmission torque between the wiper arm base 4 and the drive shaft 3, the transmission structure between the wiper arm base 4 and the drive shaft 3 may be a key connection or an expansion sleeve connection or an interference connection. Corresponding tests are of course the maximum torque and fatigue tests between the wiper arm support 4 and the drive shaft 3 in the current state of the connection. Therefore, the torque fatigue testing device of the present application can detect the different structural configurations of the wiper drive mechanism.
Furthermore, based on the torque fatigue testing device, a new transmission mechanism of the windscreen wiper of the rail transit vehicle is further designed, and one end of the driving shaft 3, which is connected with the wiper arm seat 4, is of a conical structure; the scraping arm seat 4 is provided with a conical groove matched with the conical structure; a plurality of slots are uniformly distributed on the periphery of the conical structure. The conical structure is attached to the conical groove, and transmission friction connection is formed. While increasing the friction between the drive shaft 3 and the wiper arm base 4 by means of the conical structure and the slots, while further penetrating the conical structure into the conical slots and being provided at its outer end with a threaded stud 9 and being firmly connected by means of a nut base 10. Thereby ensuring reliability of torque transmission.
The working principle is as follows:
an operator selects a driving shaft 3 and a scraping arm seat 4 to be tested (here, the driving shaft 3 with a conical structure and the scraping arm seat 4 with a conical groove are selected as examples), and respectively installs the driving shaft 3 and the scraping arm seat 4 in corresponding bearing seats 2 and gears 5, wherein the driving shaft 3 and the bearing seats 2 are rotatably connected through bearings, and the gears 5 are fixedly sleeved outside the scraping arm seat 4; the end of the driving shaft 3 connected with the scraping arm seat 4 is in a conical structure, the outer end of the driving shaft is provided with a threaded column 9, a conical groove is arranged in the scraping arm seat 4, the conical structure and the conical groove are attached to each other, the threaded column 9 penetrates through the conical groove and extends to the outside of the conical groove, a nut seat 10 is additionally arranged at the outside of the conical groove for fastening connection, and meanwhile, a gasket can be added at the joint of the conical groove and the conical groove to improve the reliability of torque transmission.
The servo motor 22 starts to work, and simulates the reciprocating swing use state of the windscreen wiper through the cooperative motion of the crank 24, the transmission handle 25 and the rocking handle 26, so that the driving shaft 3 rotates in a reciprocating swing mode, the driving shaft 3 can drive the scraping arm seat 4 to rotate in a swinging mode under the action of friction force, the gear 5 rotates in a swinging mode and drives the rack guide rail 6 to do reciprocating linear motion, and the rack guide rail 6 pulls the hydraulic shaft of the hydraulic cylinder 11 in a reciprocating mode. At this time, the opening degree of the regulating valve 20 on the liquid inlet pipeline 18 and the liquid outlet pipeline 19 between the hydraulic cylinder 11 and the oil tank 17 is regulated, so that the pressure values of the oil inlet pipeline and the oil return pipeline between the hydraulic cylinder 11 and the oil tank 17 are changed, finally, the resistance moment applied to the arm scraping seat 4 is obtained through calculation, and when the driving shaft 3 cannot drive the arm scraping seat 4 to rotate, the maximum torque between the driving shaft 3 and the arm scraping seat 4 is measured.
Meanwhile, the fatigue limit values of the driving shaft 3 and the scraping arm seat 4 in a normal use state can be simulated, the swinging frequency of the driving mechanism is changed through the speed reducer 23 for accelerating data measurement, and a corresponding counter can be additionally arranged for reading the fatigue limit values.
In conclusion, in terms of driving, the reciprocating swing using state of the windscreen wiper is simulated through the connecting rod mechanism of the crank, the transmission handle and the rocking handle, the transmission mode is simple and reliable, and meanwhile, the driving frequency of the windscreen wiper can be adjusted through the arrangement of the speed reducer, so that the fatigue detection efficiency is improved; in terms of transmission, the invention adopts a transmission mode of a gear and a rack guide rail to convert a rotating acting force into a linear acting force to act on the hydraulic cylinder, so that the hydraulic shaft of the hydraulic cylinder is stressed more directly, and the force transmission loss is reduced; meanwhile, in order to ensure the stability of the force in a transmission state, corresponding gear guide and rack guide are arranged, and further through optimizing components, the interference of friction force in the guide is reduced. According to the invention, from the structural principle, the hydraulic cylinder and the oil tank are adopted as structural components for applying the resisting moment, corresponding dynamic simulation is realized through the good circular swing of the liquid inlet pipeline and the liquid outlet pipeline and the windscreen wiper, the resisting moments applying different magnitudes can be simulated by controlling the opening degree of the regulating valve, and the invention has the advantages of simple operation and convenient control.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a rail transit vehicle window wiper drive mechanism moment of torsion fatigue test device which characterized in that: comprises that
A beam (1) mounted on the frame;
the bearing seat (2) is arranged on the cross beam (1);
the driving shaft (3) is rotatably arranged in the bearing seat (2);
the driving mechanism is arranged at one end of the driving shaft (3) and provides acting force for rotating the driving shaft (3);
the scraping arm seat (4) is sleeved at the other end of the driving shaft (3) and can rotate under the rotating action force of the driving shaft (3);
the hydraulic cylinder (11) is arranged outside one side of the scraping arm seat (4);
the transmission mechanism is arranged between the hydraulic shaft of the hydraulic cylinder (11) and the scraping arm seat (4) and converts the acting force of the rotary motion of the scraping arm seat (4) into the acting force for pushing the hydraulic shaft to move linearly;
the oil tank (17) is arranged on one side of the hydraulic cylinder (11) and is connected with the liquid outlet pipeline (19) through the liquid inlet pipeline (18), and the liquid inlet pipeline (18) and the liquid outlet pipeline (19) are provided with a regulating valve (20) and a pressure detection device (21); the opening degree of the regulating valve (20) is changed to obtain pressure values obtained by the pressure detection device (21) under different opening degrees, and the resistance moment applied to the scraper arm seat (4) by the transmission mechanism is calculated according to the obtained pressure values.
2. The rail transit vehicle wiper transmission torque fatigue testing device of claim 1, wherein: the transmission mechanism comprises
The gear (5) is fixedly sleeved outside the scraping arm seat (4);
and the rack guide rail (6) is meshed with the gear (5) and is connected with a hydraulic shaft of the hydraulic cylinder (11).
3. The rail transit vehicle wiper transmission torque fatigue testing device according to claim 2, wherein: the transmission mechanism also comprises
And the sliding guide rail is arranged on one side of the cross beam (1) through a cross beam bottom plate (8) and is arranged between the rack guide rail (6) and the cross beam bottom plate (8).
4. The rail transit vehicle wiper transmission torque fatigue testing device according to claim 2 or 3, wherein: the transmission mechanism also comprises
The gear guide arm (12) is arranged on the gear (5) and extends outwards by taking the geometric center of the gear (5) as an axis;
the gear guide plate (13) is in an arc plate structure shape, and the geometric center of the gear guide plate coincides with the geometric center of the gear (5);
and the guide device is arranged on the gear guide arm (12) and is in sliding clamping connection with two end surfaces of the gear guide plate (13).
5. The rail transit vehicle wiper transmission torque fatigue testing device according to claim 4, wherein: the guide device comprises
A first telescopic rod (14) which is arranged on the gear guide arm (12), the tail end of the first telescopic rod is elastically abutted against one surface of the gear guide plate (13), and a universal ball (16) is arranged at the abutted position;
and the second telescopic rod (15) is arranged on the gear guide arm (12), the tail end of the second telescopic rod extends to the other surface of the gear guide plate (13) and is in elastic abutting joint, and a universal ball (16) is arranged at the abutting joint.
6. The rail transit vehicle wiper transmission torque fatigue testing device of claim 1, wherein: the driving mechanism comprises
A servo motor (22), a speed reducer (23), and a crank (24), a transmission handle (25) and a rocking handle (26) which are sequentially hinged;
the servo motor (22) is fixedly connected with the crank (24);
the rocking handle (26) is fixedly connected with the driving shaft (3).
7. The rail transit vehicle wiper transmission torque fatigue testing device of claim 1, wherein:
the scraper arm seat (4) and the driving shaft (3) are connected through key connection or expansion sleeve connection or interference connection.
8. The rail transit vehicle wiper transmission torque fatigue testing device of claim 1, wherein: one end of the driving shaft (3) connected with the scraping arm seat (4) is of a conical structure; a conical groove matched with the conical structure is arranged on the scraping arm seat (4); the conical structure and the conical groove are jointed.
9. The rail transit vehicle wiper transmission torque fatigue testing device of claim 8, wherein: the conical structure penetrates through the conical groove, and is provided with a threaded column (9) at the outer end of the conical structure and is fixedly connected through a nut seat (10).
10. The rail transit vehicle wiper transmission torque fatigue testing device according to claim 8 or 9, wherein: a plurality of open grooves are uniformly distributed on the periphery of the conical structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210765650.XA CN115096583A (en) | 2022-07-01 | 2022-07-01 | Rail transit vehicle window wiper transmission mechanism torque fatigue testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210765650.XA CN115096583A (en) | 2022-07-01 | 2022-07-01 | Rail transit vehicle window wiper transmission mechanism torque fatigue testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115096583A true CN115096583A (en) | 2022-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210765650.XA Pending CN115096583A (en) | 2022-07-01 | 2022-07-01 | Rail transit vehicle window wiper transmission mechanism torque fatigue testing device |
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| Country | Link |
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| CN (1) | CN115096583A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825032A (en) * | 2024-02-21 | 2024-04-05 | 东莞市理彬五金制品有限公司 | Service life testing equipment for spring |
-
2022
- 2022-07-01 CN CN202210765650.XA patent/CN115096583A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117825032A (en) * | 2024-02-21 | 2024-04-05 | 东莞市理彬五金制品有限公司 | Service life testing equipment for spring |
| CN117825032B (en) * | 2024-02-21 | 2024-06-07 | 东莞市理彬五金制品有限公司 | Service life testing equipment for spring |
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