CN109696317B - Test equipment for variable-gauge wheel pair - Google Patents
Test equipment for variable-gauge wheel pair Download PDFInfo
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- CN109696317B CN109696317B CN201910005829.3A CN201910005829A CN109696317B CN 109696317 B CN109696317 B CN 109696317B CN 201910005829 A CN201910005829 A CN 201910005829A CN 109696317 B CN109696317 B CN 109696317B
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- 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
- G01M17/10—Suspensions, axles or wheels
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Abstract
The invention provides a test device for a variable-gauge wheel pair. The test apparatus includes: a base; the power assembly is arranged on the base and connected with an axle of the track-variable wheel pair so as to drive the axle to rotate; the pressure loading assembly is arranged on the base and comprises a pressure applying device which applies pressure to the axle so as to enable the axle to operate under the pressure action of a preset pressure value; the unlocking assembly is arranged on the base and comprises an abutting part and a first driving device for driving the abutting part to move, and the first driving device drives the abutting part to move towards an unlocking disc of the variable-track-pitch wheel pair so as to be in contact with the unlocking disc and push the unlocking disc to move to an unlocking position; and the pushing assembly comprises a second driving device, and the second driving device drives the wheels of the variable-gauge wheel pair to move along the axial direction of the axle so as to adjust the distance between the two wheels. The invention solves the problem of lower accuracy of the test equipment for the variable-gauge wheel pair in the prior art.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a test device for a track-variable wheel pair.
Background
At present, a variable-gauge wheel set is a core component of a variable-gauge bogie, and directly influences the performance and the service life of the variable-gauge bogie. The fatigue test is an important test for verifying whether the track-variable wheel set reaches the design performance and the service life.
However, in the prior art, in the test process of the test equipment for the fatigue test of the variable-gauge wheel set, no load is applied to the variable-gauge wheel set, so that the fatigue test accuracy of the variable-gauge wheel set is low, and the accuracy of the test result is affected.
Disclosure of Invention
The invention mainly aims to provide test equipment for a variable-gauge wheel pair, and solves the problems that in the prior art, the test equipment for the variable-gauge wheel pair is low in accuracy and influences the test result.
In order to achieve the above object, the present invention provides a testing apparatus for a variable gauge wheel set, comprising: a base; the power assembly is arranged on the base and connected with an axle of the track-variable wheel pair so as to drive the axle to rotate; the pressure loading assembly is arranged on the base and comprises a pressure applying device which applies pressure to the axle so as to enable the axle to operate under the pressure action of a preset pressure value; the unlocking assembly is arranged on the base and comprises an abutting part and a first driving device for driving the abutting part to move, and the first driving device drives the abutting part to move towards an unlocking disc of the variable-track-pitch wheel pair so as to be in contact with the unlocking disc and push the unlocking disc to move to an unlocking position; and the pushing assembly comprises a second driving device, and when the unlocking disc is in the unlocking position, the second driving device drives the wheels of the track-variable wheel pair to move along the axial direction of the axle so as to adjust the distance between the two wheels.
Further, the test apparatus further comprises: the sensor assembly comprises a rotating speed sensor for detecting the rotating speed of the wheel and a pressure sensor for detecting the pressure value applied to the axle by the pressure applying device; and the control system is connected with the sensor assembly, the sensor assembly transmits the rotating speed value of the wheel and the pressure value applied to the axle by the pressure applying device to the control system, and the control system stores and/or displays the rotating speed value and the pressure value.
Further, the power assembly comprises a motor, the motor is connected with the axle, the rotating speed sensor converts the rotating speed value of the wheel into a first digital signal and transmits the first digital signal to the control system, and the control system adjusts the rotating speed of the motor according to the first digital signal so that the rotating speed of the axle reaches a preset rotating speed value.
Further, the pressure loading assembly further comprises: the bearing structure is sleeved on the axle; the bearing structure is provided with a pressure sensor, the pressure sensor is arranged on the bearing structure and used for detecting a pressure value received by the bearing structure, the pressure sensor converts the pressure value into a second digital signal and then transmits the second digital signal to the control system, and the control system adjusts the pressure value of the pressure device according to the second digital signal so as to enable the pressure value to reach a preset pressure value.
Further, the pressure loading assembly further comprises: the first support is arranged on the base, the bearing structure is connected with the first support, the pressure applying device is an oil cylinder, a hydraulic cylinder or an air cylinder, a cylinder body of the oil cylinder, the hydraulic cylinder or the air cylinder is arranged on the first support, and a piston rod of the oil cylinder, the hydraulic cylinder or the air cylinder moves towards the bearing structure to apply pressure to the bearing structure.
Further, the unlocking assembly further comprises: the second bracket is arranged on the base; the pivot structure is provided with a pivot part and a connecting part, the pivot part is in pivot connection with one end, far away from the base, of the second support, the abutting part is arranged on the pivot structure, and the connecting part is connected with the driving end of the first driving device so as to drive the pivot structure to rotate around the second support through the first driving device, so that the abutting part pushes the unlocking disc to move to the unlocking position.
Furthermore, the pivot structure is also provided with a protruding part, the abutting part is an annular structure, the annular structure is sleeved on the protruding part and can rotate relative to the protruding part, and the protruding part is positioned between the pivot part and the connecting part.
Further, the pushing assembly further comprises: and the pushing structure is connected with the second driving device and provided with a clamping part for clamping the wheel, when the unlocking disc is positioned at the unlocking position, the clamping part clamps the wheel, and the second driving device drives the clamping part to move along the axial direction of the axle.
Further, the pushing assembly further comprises: the guide rail is arranged on the base, the pushing structure is slidably arranged on the guide rail, and the extending direction of the guide rail is consistent with the axial direction of the axle.
Further, the pushing assembly further comprises: the wheel-shaped structure is arranged in the clamping part and is rotatably connected with the clamping part, and the wheel-shaped structure is positioned below the wheel so as to support the wheel; wherein, the axial direction of the wheel-shaped structure is consistent with the axial direction of the wheel.
Furthermore, the number of the pressure loading assemblies is two, and the two pressure loading assemblies respectively apply pressure to two ends of the axle.
By applying the technical scheme of the invention, the power assembly is connected with the axle of the track-variable wheel pair so as to drive the axle to rotate. In the axle rotating process, the pressure applying device of the pressure loading assembly applies pressure to the axle of the variable-gauge wheel set so that the axle operates under the pressure action of the preset pressure value, the loading effect is achieved, the simulation precision of the test equipment for the variable-gauge wheel set is improved, and the problems that the accuracy of the test equipment for the variable-gauge wheel set in the prior art is low and the test result is influenced are solved. When the track of the track-variable wheel pair needs to be adjusted, the first driving device of the unlocking assembly drives the abutting portion to move towards the unlocking disc of the track-variable wheel pair so as to be in contact with the unlocking disc and push the unlocking disc to move to the unlocking position. The second drive of the thrust assembly then drives the wheels of the pair of gauge wheels in axial movement along the axle to adjust the spacing between the two wheels.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows a front view of an embodiment of a test rig for a variable gauge wheel pair according to the invention;
FIG. 2 shows a top view of the test rig for a variable gauge wheel set of FIG. 1;
FIG. 3 shows a side view of the test rig for a variable gauge wheel set of FIG. 1;
FIG. 4 shows a cross-sectional view of the test rig for a variable gauge wheel set of FIG. 1;
FIG. 5 is a schematic structural diagram illustrating the variable gauge wheel set unlocking assembly for the variable gauge wheel set of FIG. 1; and
fig. 6 shows a schematic structural diagram of the push assembly for the variable-gauge wheel set in fig. 1 after being assembled with the variable-gauge wheel set.
Wherein the figures include the following reference numerals:
10. a base; 20. a power assembly; 21. a motor; 30. a track-pitch-variable wheel pair; 31. an axle; 32. unlocking the disc; 33. a wheel; 40. a pressure loading assembly; 41. a pressure applying device; 43. a load bearing structure; 44. a first bracket; 50. an unlocking assembly; 51. an abutting portion; 52. a first driving device; 53. a second bracket; 54. a pivot structure; 541. a pivot portion; 542. a connecting portion; 543. a protrusion; 60. a pushing assembly; 61. a second driving device; 62. a pushing structure; 621. a clamping portion; 622. an inner rolling contact; 623. an outer rolling contact; 63. a guide rail; 64. a wheel-like structure; 72. a pressure sensor; 80. and (5) controlling the system.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.
In order to solve the problem that the accuracy of the test equipment for the variable-gauge wheel set in the prior art is lower and the experimental result is influenced, the application provides the test equipment for the variable-gauge wheel set.
As shown in fig. 1 to 4, the testing equipment for the variable-gauge wheel pair comprises a base 10, a power assembly 20, a pressure loading assembly 40, an unlocking assembly 50 and a pushing assembly 60. Wherein. The power assembly 20 is arranged on the base 10, and the power assembly 20 is connected with the axle 31 of the track-variable wheel pair 30 to drive the axle 31 to rotate. The pressure loading assembly 40 is disposed on the base 10, and the pressure loading assembly 40 includes a pressing device 41, and the pressing device 41 presses the axle 31 so that the axle 31 operates under the pressure of a preset pressure value. The unlocking assembly 50 is arranged on the base 10, the unlocking assembly 50 comprises an abutting part 51 and a first driving device 52 for driving the abutting part 51 to move, and the first driving device 52 drives the abutting part 51 to move towards the unlocking disc 32 of the variable-gauge wheel pair 30 so as to be in contact with the unlocking disc 32 and push the unlocking disc 32 to move to the unlocking position. The pushing assembly 60 includes a second driving device 61, and when the unlocking disc 32 is in the unlocking position, the second driving device 61 drives the wheels 33 of the track-changing wheel pair 30 to move along the axial direction of the axle 31 so as to adjust the distance between the two wheels 33.
By applying the technical solution of the present embodiment, the power assembly 20 is connected to the axle 31 of the track-variable wheel pair 30 to drive the axle 31 to rotate. In the rotation process of the axle 31, the pressure applying device 41 of the pressure loading assembly 40 applies pressure to the axle 31 of the variable-gauge wheel set 30, so that the axle 31 operates under the pressure action of a preset pressure value, the loading effect is further realized, the simulation precision of the test equipment for the variable-gauge wheel set is improved, and the problems that the accuracy of the test equipment for the variable-gauge wheel set in the prior art is low and the test result is influenced are further solved. Wherein, when the track width of the track-variable wheel pair 30 needs to be adjusted, the first driving device 52 of the unlocking assembly 50 drives the abutting part 51 to move towards the unlocking disc 32 of the track-variable wheel pair 30 so as to contact the unlocking disc 32 and push the unlocking disc 32 to move to the unlocking position. Then, the second driving device 61 of the pushing assembly 60 drives the wheels 33 of the track-changing wheel pair 30 to move along the axial direction of the axle 31, so as to adjust the distance between the two wheels 33.
In the present embodiment, the above-mentioned arrangement of the pressure loading assembly 40 makes the load applying position the same as the actual operation condition, so as to improve the simulation accuracy of the testing apparatus.
In the embodiment, the test equipment can perform the running and fatigue test of the track-variable wheel set and the track-variable fatigue test of the wheel set. Wherein, the operation and fatigue test of wheel pair are: the wheel set is rotationally operated in a locking state, and the fatigue reliability of the variable-gauge wheel set in a normal operation state is checked. The wheel set track gauge-variable fatigue test comprises the following steps: under the load of the heavy vehicle, the track gauge is repeatedly changed in the operation process of the track gauge changing wheel pair 30, and the function and the abrasion condition of a locking mechanism of the track gauge changing wheel pair are examined.
As shown in FIG. 3, the test rig further includes a sensor assembly and control system 80. The sensor assembly includes a rotational speed sensor for detecting the rotational speed of the wheel 33 and a pressure sensor 72 for detecting the pressure value applied to the axle 31 by the pressure applying device 41. The control system 80 is connected with a sensor assembly, the sensor assembly transmits the rotating speed value of the wheel 33 and the pressure value of the pressure applied to the axle 31 by the pressure applying device 41 to the control system 80, and the control system 80 stores and displays the rotating speed value and the pressure value. Like this, control system 80 can show the rotational speed value of the wheel pair of the variable gauge and the pressure value that receives on axletree 31, and then the staff of being convenient for carries out real time monitoring to test equipment, ensures experimental security.
Specifically, in the process of fatigue test of the test equipment, the rotation speed sensor can detect the rotation speed of the wheel 33 (axle 31), and convert the detection value into a digital signal and transmit the digital signal to the control system 80, and the control system 80 stores, processes and displays the detection value, so that the staff can conveniently acquire the rotation speed of the variable-gauge wheel pair 30, and the staff can conveniently control the power applied to the axle 31 by the power assembly 20. Meanwhile, the pressure sensor 72 can detect the load applied to the axle 31 by the pressing device 41, and the control can store, process and display the load value, so that the worker can conveniently obtain the load value in real time, and the load value of the pressing device 41 can be conveniently controlled.
In this embodiment, the control system 80 can record data such as the number of revolutions, the rotational speed, the load, the axle temperature, the time, the mileage, etc. of the gauge wheel set 30 during the fatigue test in real time. When the data are abnormal, the control system 80 can control the audible and visual alarm to give an alarm and automatically stop.
As shown in fig. 1 to 3, the power assembly 20 includes a motor 21, the motor 21 is connected to the axle 31, a rotation speed sensor converts a rotation speed value of the wheel 33 into a first digital signal and transmits the first digital signal to the control system 80, and the control system 80 adjusts the rotation speed of the motor 21 according to the first digital signal so as to enable the rotation speed of the axle 31 to reach a preset rotation speed value. Like this, in power component 20 drives axletree 31 operation in-process, speed sensor transmits first digital signal to control system 80 in real time to ensure that axletree 31 operates under predetermineeing the rotational speed value, and then promote test equipment's test accuracy.
Specifically, the power assembly 20 also includes a conveyor belt. Wherein the transfer belt is connected with a motor shaft of the motor 21 to transmit power of the motor shaft to the axle 31. In the process that the motor 21 drives the axle 31 to operate, the rotating speed sensor monitors the rotating speed of the axle 31 in real time to ensure that the track-variable wheel pair operates at a preset rotating speed value, so that a fatigue test of the track-variable wheel pair at a constant rotating speed is performed.
As shown in fig. 1 and 3, the pressure loading assembly 40 further includes a bearing structure and a load-bearing structure 43. Wherein the bearing structure is sleeved on the axle 31. The pressure device 41 applies pressure to the bearing structure through the bearing structure 43, the pressure sensor 72 is disposed on the bearing structure 43 and is used for detecting a pressure value applied to the bearing structure 43, the pressure sensor 72 converts the pressure value into a second digital signal and transmits the second digital signal to the control system 80, and the control system 80 adjusts the pressure value of the pressure device 41 according to the second digital signal so that the pressure value reaches a preset pressure value. Like this, because axletree 31 is the rotation that does not stop under motor 21's drive, can learn the pressure that axletree 31 received through detecting the pressure that bearing structure 43 received, and then make the control of the load value of staff to loading load on axletree 31 easier, reduced the operation degree of difficulty. Meanwhile, the pressure loading assembly 40 forms a closed-loop control system 80 by the arrangement, and the purpose of accurately simulating the working condition of the heavy vehicle is achieved.
Specifically, in the process that the axle 31 of the track-changing wheel pair drives the wheel 33 to rotate, the pressure applying device 41 applies pressure to the bearing structure through the bearing structure 43, the pressure sensor 72 is used for detecting the pressure value received by the bearing structure 43, so as to obtain the pressure received by the axle 31, and the pressure value of the pressure can be obtained through the control system 80, so that the track-changing wheel pair is loaded under the preset pressure value, and the fatigue test is performed on the loaded track-changing wheel pair, so that the experimental requirements are met.
As shown in fig. 1-3, the pressure loading assembly 40 further includes a first bracket 44. Wherein the first support 44 is arranged on the base 10, the carrying structure 43 is connected with the first support 44, the pressure applying device 41 is an oil cylinder, a cylinder body of the oil cylinder is arranged on the first support 44, and a piston rod of the oil cylinder moves towards the carrying structure 43 to apply pressure to the carrying structure 43. Specifically, bearing structure 43 and first support 44 sliding connection, and then guarantee that bearing structure 43 can slide along the direction of height under the promotion of piston rod, promote test equipment's reliability.
Note that the type of the pressing device 41 is not limited to this. Alternatively, the pressing device 41 is a hydraulic cylinder or an air cylinder.
In the present embodiment, the rotation speed sensor is provided on the first bracket 44 at a position close to the axle 31. Like this, the rigidity of speed sensor is guaranteed to above-mentioned setting, and then promotes speed sensor's detection precision.
As shown in fig. 1, 4 and 5, the unlocking assembly 50 further includes a second bracket 53 and a pivoting structure 54. Wherein the second bracket 53 is disposed on the base 10. The pivoting structure 54 has a pivoting portion 541 and a connecting portion 542, the pivoting portion 541 is pivotally connected to one end of the second bracket 53 away from the base 10, the abutting portion 51 is disposed on the pivoting structure 54, and the connecting portion 542 is connected to the driving end of the first driving device 52, so that the pivoting structure 54 is driven by the first driving device 52 to rotate around the second bracket 53, so that the abutting portion 51 pushes the unlocking disk 32 to move to the unlocking position. In this way, the first driving device 52 drives the abutting part 51 to move, so that the abutting part 51 pushes the unlocking disc 32 to move to the unlocking position, and further, the variable-track-pitch wheel pair is easier and simpler to unlock, and the labor intensity of workers is reduced.
In this embodiment, the unlocking assembly 50 is capable of periodically unlocking or locking the unlocking disk 32 to meet experimental requirements.
Optionally, the pivot structure 54 is a door-type structure, and the axle 31 is inserted into the door-type structure, so as to ensure that the axle 31 does not structurally interfere with the pivot structure 54.
Specifically, the connecting portion 542 is disposed close to the base 10, and when the track width of the track-variable wheel pair needs to be adjusted, the first driving device 52 drives the connecting portion 542 to move toward the unlocking disk 32, so as to rotate the pivot structure 54 around the pivot portion 541, so as to move the abutting portion 51 toward the unlocking disk 32, and push the unlocking disk 32 to move to the unlocking position, so that the worker can adjust the track width. After the track adjustment is completed, the elastic piece in the track-changing wheel pair pushes the unlocking disc 32 to move, so that the unlocking disc 32 is reset and moves to the locking position.
As shown in fig. 4 and fig. 5, the pivot structure 54 further has a protruding portion 543, the abutting portion 51 is a ring structure, the ring structure is sleeved on the protruding portion 543 and can rotate relative to the protruding portion 543, and the protruding portion 543 is located between the pivot portion 541 and the connecting portion 542. Thus, the arrangement makes rolling friction between the abutting part 51 and the unlocking disc 32 so as to reduce the friction force between the abutting part 51 and the unlocking disc 32, reduce the abrasion degree of the abutting part 51 and the unlocking disc 32 and prolong the service life of the test equipment and the track-variable wheel pair.
In the present embodiment, the operation principle of the unlocking assembly 50 is as follows: the second driving device 61 outputs a pushing force F4, and applies the pushing force F4 to the connecting portion 542 of the pivoting structure 54, so that the pivoting structure 54 rotates around the pivoting portion 541, the abutting portion 51 approaches and contacts the unlocking disk 32, and the unlocking disk 32 is pushed until the unlocking state is achieved, that is, the variable-gauge operation can be performed. After the moment changing operation is completed, the second driving device 61 retracts to withdraw the pushing force F4, and the locked state is restored.
As shown in fig. 1, 4 and 6, the pushing assembly 60 further includes a pushing structure 62. Wherein the pushing structure 62 is connected with the second driving device 61, the pushing structure 62 has a clamping portion 621 for clamping the wheel 33, when the unlocking disk 32 is in the unlocking position, the clamping portion 621 clamps the wheel 33, and the second driving device 61 drives the clamping portion 621 to move along the axial direction of the axle 31. Thus, when the unlocking disc 32 is located at the unlocking position, the pushing structure 62 pushes the wheel 33 to move along the axial direction of the axle 31, so as to adjust the wheel track, further, the adjustment of the wheel track by the worker is easier and more labor-saving, and the labor intensity of the worker is reduced.
Optionally, the second drive means 61 is a two-way servo cylinder. The control system 80 controls the bidirectional servo oil cylinder to repeatedly act so as to realize cyclic loading of periodic unlocking and locking functions and complete a fatigue test.
As shown in fig. 1, 4 and 6, the pushing assembly 60 further includes a guide rail 63. Wherein, the guide rail 63 is disposed on the base 10, the pushing structure 62 is slidably disposed on the guide rail 63, and the extending direction of the guide rail 63 is consistent with the axial direction of the axle 31. Thus, in the process of adjusting the wheel track, the pushing structure 62 drives the wheel 33 to move along the extending direction of the guide rail 63, so that the adjustment of the wheel track is more labor-saving and convenient.
As shown in fig. 1, 4 and 6, the pushing assembly 60 further includes a wheel-like structure 64. The wheel-shaped structure 64 is disposed in the clamping portion 621 and rotatably connected to the clamping portion 621, and the wheel-shaped structure 64 is located below the wheel 33 to support the wheel 33. The axial direction of the wheel-like structure 64 coincides with the axial direction of the wheel 33. In this way, the wheel structure 64 functions to support the wheel 33, ensuring that both the weight of the wheel 33 and the wheel 33 can be supported and can roll freely.
In the present embodiment, the working principle of the pushing assembly 60 is as follows: when the unlocking disc 32 is in the unlocking state, the second driving device 61 pushes or pulls the pushing structure 62 to move along the guide rail 63, and the inner rolling contact 622 or the outer rolling contact 623 of the pushing structure 62 pushes the wheel 33 to move, so that the track change is realized.
As shown in fig. 1, 2 and 4, the number of the pressure applying units 40 is two, and the two pressure applying units 40 respectively apply pressure to both ends of the axle 31. Thus, the arrangement enables the test equipment to respectively load the two wheels 33 of the variable-gauge wheel set so as to simulate fatigue of the variable-gauge wheel set under the conditions of turning, straight running and the like, and further broaden the application range of the test equipment.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the power assembly is connected with the axle of the track-variable wheel pair to drive the axle to rotate. In the axle rotating process, the pressure applying device of the pressure loading assembly applies pressure to the axle of the variable-gauge wheel set so that the axle operates under the pressure action of the preset pressure value, the loading effect is achieved, the simulation precision of the test equipment for the variable-gauge wheel set is improved, and the problems that the accuracy of the test equipment for the variable-gauge wheel set in the prior art is low and the test result is influenced are solved. When the track of the track-variable wheel pair needs to be adjusted, the first driving device of the unlocking assembly drives the abutting portion to move towards the unlocking disc of the track-variable wheel pair so as to be in contact with the unlocking disc and push the unlocking disc to move to the unlocking position. The second drive of the thrust assembly then drives the wheels of the pair of gauge wheels in axial movement along the axle to adjust the spacing between the two wheels.
It is to be understood that the above-described embodiments are only a few, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The utility model provides a test equipment for gauge-variable wheel pair, includes base (10), power component (20) and pressure loading subassembly (40), power component (20) set up on base (10), power component (20) are connected with axletree (31) of gauge-variable wheel pair (30) to the drive axletree (31) rotate, pressure loading subassembly (40) set up on base (10), pressure loading subassembly (40) include biasing means (41), biasing means (41) to axletree (31), so that axletree (31) operate under the pressure effect of default pressure value, its characterized in that, test equipment still includes:
the unlocking assembly (50) is arranged on the base (10), the unlocking assembly (50) comprises an abutting part (51) and a first driving device (52) for driving the abutting part (51) to move, and the first driving device (52) drives the abutting part (51) to move towards an unlocking disc (32) of the track-variable wheel pair (30) so as to be in contact with the unlocking disc (32) and push the unlocking disc (32) to move to an unlocking position;
a push assembly (60) comprising a second drive means (61), said second drive means (61) driving the wheels (33) of said pair (30) of track-changing wheels to move axially along said axle (31) to adjust the spacing between the two wheels (33) when said unlocking disc (32) is in said unlocked position.
2. The testing apparatus of claim 1, further comprising:
a sensor assembly including a rotational speed sensor for detecting a rotational speed of the wheel (33) and a pressure sensor (72) for detecting a pressure value of the pressing device (41) to the axle (31);
the control system (80) is connected with the sensor assembly, the sensor assembly transmits the rotating speed value of the wheel (33) and the pressure value of the pressure device (41) for pressing the axle (31) to the control system (80), and the control system (80) stores and/or displays the rotating speed value and the pressure value.
3. The test apparatus according to claim 2, wherein the power assembly (20) comprises an electric motor (21), the electric motor (21) is connected with the axle (31), the rotation speed sensor converts the rotation speed value of the wheel (33) into a first digital signal and transmits the first digital signal to the control system (80), and the control system (80) adjusts the rotation speed of the electric motor (21) according to the first digital signal so as to enable the rotation speed of the axle (31) to reach a preset rotation speed value.
4. The testing apparatus of claim 2, wherein the pressure loading assembly (40) further comprises:
the bearing structure is sleeved on the axle (31);
the bearing structure is provided with a bearing structure (43), the pressure applying device (41) applies pressure to the bearing structure through the bearing structure (43), the pressure sensor (72) is arranged on the bearing structure (43) and used for detecting a pressure value applied to the bearing structure (43), the pressure sensor (72) converts the pressure value into a second digital signal and then transmits the second digital signal to the control system (80), and the control system (80) adjusts the pressure applying value of the pressure applying device (41) according to the second digital signal so that the pressure value reaches a preset pressure value.
5. The testing apparatus of claim 4, wherein the pressure loading assembly (40) further comprises:
the first support (44) is arranged on the base (10), the bearing structure (43) is connected with the first support (44), the pressure applying device (41) is an oil cylinder or an air cylinder, a cylinder body of the oil cylinder or the air cylinder is arranged on the first support (44), and a piston rod of the oil cylinder or the air cylinder moves towards the bearing structure (43) to apply pressure to the bearing structure (43).
6. Test rig according to claim 1, wherein the unlocking assembly (50) further comprises:
a second bracket (53) provided on the base (10);
the pivoting structure (54) is provided with a pivoting part (541) and a connecting part (542), the pivoting part (541) is pivotally connected with one end, away from the base (10), of the second bracket (53), the abutting part (51) is arranged on the pivoting structure (54), and the connecting part (542) is connected with the driving end of the first driving device (52) so that the pivoting structure (54) can be driven to rotate around the second bracket (53) through the first driving device (52) to enable the abutting part (51) to push the unlocking disc (32) to move to the unlocking position.
7. The testing apparatus according to claim 6, wherein the pivot structure (54) further comprises a protrusion portion (543), the abutting portion (51) is a ring-shaped structure, the ring-shaped structure is sleeved on the protrusion portion (543) and can rotate relative to the protrusion portion (543), and the protrusion portion (543) is located between the pivot portion (541) and the connecting portion (542).
8. The testing apparatus of claim 1, wherein the pushing assembly (60) further comprises:
the pushing structure (62) is connected with the second driving device (61), the pushing structure (62) is provided with a clamping portion (621) used for clamping the wheel (33), when the unlocking disc (32) is located at the unlocking position, the clamping portion (621) clamps the wheel (33), and the second driving device (61) drives the clamping portion (621) to move along the axial direction of the axle (31).
9. The testing apparatus of claim 8, wherein the pushing assembly (60) further comprises:
and the guide rail (63) is arranged on the base (10), the pushing structure (62) is arranged on the guide rail (63) in a sliding mode, and the extending direction of the guide rail (63) is consistent with the axial direction of the axle (31).
10. The testing apparatus of claim 8, wherein the pushing assembly (60) further comprises:
the wheel-shaped structure (64) is arranged in the clamping part (621) and is rotatably connected with the clamping part (621), and the wheel-shaped structure (64) is positioned below the wheel (33) to support the wheel (33);
wherein the axial direction of the wheel-like structure (64) coincides with the axial direction of the wheel (33).
11. Test device according to claim 1, characterized in that said pressure loading assemblies (40) are two, said two pressure loading assemblies (40) respectively pressing both ends of said axle (31).
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| CN110501148B (en) * | 2019-07-25 | 2021-05-11 | 中车青岛四方机车车辆股份有限公司 | Fatigue test equipment and fatigue test method for variable-gauge bogie axle |
| CN110441078B (en) * | 2019-08-12 | 2021-01-29 | 中车青岛四方车辆研究所有限公司 | Brake clamp unit testing device and method for variable-gauge bogie |
| CN110702432A (en) * | 2019-10-28 | 2020-01-17 | 中车青岛四方机车车辆股份有限公司 | Variable-track-pitch wheel set testing device and method |
| CN110631847B (en) * | 2019-10-28 | 2024-10-29 | 吉林大学 | Rail-changing function detection and fatigue reliability test bed for gauge-changing wheel set |
| CN111504670B (en) * | 2020-04-28 | 2021-10-29 | 中车青岛四方车辆研究所有限公司 | Comprehensive performance test bed for variable-gauge wheel set |
| CN111366385B (en) * | 2020-05-06 | 2024-05-07 | 吉林大学 | Double-driving-wheel track change mechanism suitable for track change performance research |
| CN111537248B (en) * | 2020-05-09 | 2021-11-16 | 中车长春轨道客车股份有限公司 | Ground track-changing test device for track gauge-changing bogie |
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