A vibration detection device for urban rail train running gear

Abstract

The present invention relates to the field of vibration detection technology, and discloses a vibration detection device for a running part of an urban rail train, comprising two track frames and rails arranged at the upper ends thereof, a base and a detection component are installed under the rails, the detection component is used for vibration detection, and is characterized in that it also comprises a simulation component for simulating the operation of a running part of a train; the simulation component comprises a double-headed motor, the double-headed motor is installed on a base, and two gear boxes are mirror-mounted on the base. Through the cooperation of the simulation component and the detection component, when the running part of the train stops on the rails, the wheelset is lifted up by two sets of test wheels, and the wheelset is driven to rotate, thereby simulating the running of the running part of the train on the track, obtaining the amplitude of the running part of the train through contacts, and displaying the detection results through a detector, so that the running part of the train can be subjected to vibration detection in a maintenance station without long-distance movement, thereby improving the convenience of detection.

Description

Technical Field

[0001] The present invention relates to the technical field of vibration detection, and in particular to a vibration detection device for a running part of an urban rail train. Background Art

[0002] The running gear of an urban rail train is the lower part of an urban rail train that guides the train to run along the track and transfers the entire weight of the train to the rail. It is mainly composed of wheel sets, axle box lubrication devices, side frames, bolsters, and spring damping devices. Urban rail transit will generate vibrations during operation, which will directly affect the passengers' riding experience. The running gear of the train needs to be regularly tested for vibration. A vibration meter is used to detect the vibration of the running gear to determine whether there is a problem of excessive vibration. Abnormal vibration may be caused by suspension failure, bearing failure, etc. Vibration detection can be used to evaluate the impact of the running gear on passenger comfort. If the vibration is found to be too large, the operator can take corresponding measures to improve it, such as adjusting the track structure, improving the vehicle suspension system, etc., thereby improving passenger comfort, while ensuring the safe operation of the train and optimizing train performance.

[0003] The Chinese patent "CN215003917U" discloses "a train vibration detection device", including a vibration detector body, a shock absorber is provided at the lower end of the vibration detector body, a display screen is provided at the upper end of one side of the vibration detector body, a key area is provided at the lower end of the display screen, a vibration measuring mechanism is provided inside the vibration detector body, the display screen and the key area are connected to the vibration measuring mechanism inside the vibration detector body, and a transmission line is connected to the middle position of the lower side of one end of the vibration detector body. This patent uses the eddy current output mechanism inside the vibration detector body to send out two eddy currents in succession. The vibration measurement operation mechanism compares and operates the two eddy currents in succession, calculates the consumed eddy current flow, determines whether the train generates vibration, detects the vibration of the train and represents it through data visualization, which is convenient for observation and recording, and determines whether it causes safety hazards to the train operation according to the vibration size.

[0004] However, the prior art has the following problems:

[0005] The prior art usually adopts the method of installing a detection device at the bottom of the train running part to perform vibration detection during the operation of the train. The train running part needs to run a certain distance on the track so that the detection device can detect the vibration generated by the train running on the track to achieve the detection purpose. When the train is located in a maintenance station, due to the small space in the maintenance station, it is not convenient for the train to run for a long distance, and thus it is not convenient to perform vibration detection on the running part. At the same time, a failure of the vibration detector cannot be detected in time, thereby affecting the detection result of the running part. Summary of the invention

[0006] The purpose of the present invention is to provide a vibration detection device for the running part of an urban rail train in order to solve the above-mentioned problems and overcome the defects of the prior art, as described in detail below.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] The present invention provides a vibration detection device for the running part of an urban rail train, comprising two track frames and rails arranged at the upper ends thereof, a base and a detection component are installed under the rails, the detection component is used for vibration detection, and is characterized in that it also includes a simulation component for simulating the operation of the running part of the train; the simulation component includes a double-headed motor, the double-headed motor is installed on the base, two gear boxes are mirror-mounted on the base, a No. 1 gear is rotatably installed in the gear box, the double-headed motor is provided with two output ends, the two output ends of the double-headed motor are respectively connected to two No. 1 gears, the gear box is also rotatably installed with a No. 2 gear and two No. 3 gears, four supports are installed on the base, a wheel axle is rotatably installed on the support, a test wheel is connected to the wheel axle, the four test wheels are divided into two groups, one group of the test wheels is two, and the two groups of the test wheels are mirror-mounted, a notch is provided on the rail, and the two groups of the test wheels are respectively movable in the notches of the two rails;

[0009] The detection component includes a detector, a telescopic rod is installed on the detector, the fixed end of the telescopic rod is installed on the base, the telescopic end of the telescopic rod is connected to a contact, a spring is arranged between the contact and the fixed end of the telescopic rod, and four hydraulic support rods are also installed at the bottom of the base.

[0010] Preferably, the number one gear is meshed at the lower side of the number two gear, the two number three gears are meshed at the top of the number two gear, and the four wheel axles are respectively connected to the four number three gears.

[0011] Preferably, an adjusting screw is threadedly connected to the inner wall of the wheel axle, a handle is provided at one end of the adjusting screw, a frustum block is connected to the other end of the adjusting screw, and four inner sliding blocks are slidably mounted on the inner wall of the test wheel.

[0012] Preferably, the inner slider has a transverse H-shape, one end of the inner slider is located on the outer surface of the test wheel, the other end of the inner slider is located inside the test wheel, the four inner sliders are arranged in a circular array with the center of the test wheel as the center, the frustum block is located inside the test wheel, the four inner sliders are in sliding contact with the frustum block, and a reset spring is arranged between the inner slider and the inner wall of the test wheel.

[0013] Preferably, the simulation component also includes two slide frames, which are slidably mounted on two gear boxes respectively, and a portion of the slide frames is located inside the gear box. A cam is connected to the end of the third gear away from the axle, and a mounting plate is connected to the top of the slide frame, on which a plurality of hammers are mounted.

[0014] Preferably, the cam is eccentrically arranged on the third gear, and two slide grooves are arranged on the slide groove frame, and the two slide grooves of the slide groove frame are in contact with the two cams respectively.

[0015] Preferably, it also includes a drawing component for converting the vibration amplitude into a waveform graph, the drawing component includes a ball slider, the ball slider is slidably installed on the base, a ball screw is connected between the two No. 2 gears, the ball screw is provided with a threaded groove, the ball slider is slidably connected to the threaded groove of the ball screw via a ball, the ball slider is connected to a mounting box, the interior of the mounting box is connected to an inner support plate via a spring sheet, a fulcrum frame is installed on the top of the detector, a movable rod is rotatably installed on the fulcrum frame, one end of the movable rod is connected to a drawing pen, and the other end of the movable rod is hinged to the contact via a sliding hinge.

[0016] Preferably, the installation box is provided with a cover, a plurality of drawing papers are placed between the cover and the inner support plate of the installation box, and the drawing pen is in contact with one of the drawing papers.

[0017] Preferably, paper outlets are respectively provided on both sides of the installation box, and two friction wheels are rotatably installed on the installation box, the two friction wheels are respectively located above the two paper outlets, the friction wheels are in contact with one of the drawing papers, and the outer walls of the two gear boxes are respectively fixedly connected with friction blocks, and the two friction wheels are respectively in contact with two friction blocks during movement.

[0018] Preferably, four rollers are installed at the bottom of the base.

[0019] The beneficial effects are:

[0020] 1. The vibration detection device for the running part of an urban rail train, through the cooperation of a simulation component and a detection component, enables the running part of the train to stop on the rail, and then the wheels are lifted up by two sets of test wheels, driving the wheels to rotate, thereby simulating the running of the running part of the train on the track, and obtaining the amplitude of the running part of the train through the contacts, and displaying the detection results through the detector, so that the running part of the train can be vibration-detected in the maintenance station without moving a long distance, thereby improving the convenience of detection; through the setting of the inner slider, the four inner sliders on the test wheel can be raised, thereby simulating the running of the running part of the train on the track with protrusions, and the adjusting screw can also adjust the amplitude of the protrusion of the inner slider to simulate the working condition of the presence of large protrusions on the track; through the setting of multiple hammers, during the vibration detection of the running part of the train, multiple hammers can continuously hit the bottom of the running part of the train, simulating the working condition that small stones and foreign objects hit the bottom of the running part of the train when the running part is actually running, further improving the working condition simulation range of the simulation component.

[0021] 2. The vibration detection device for the running part of the urban rail train, through the setting of the drawing component, enables the drawing pen to use the lever principle to amplify the vibration of the contact, and then convert the amplitude into a waveform graph and draw it on the drawing paper. The waveform graph can observe the amplitude more intuitively, and can replace the detector to perform vibration detection in the event of a detector failure. At the same time, it can also regularly compare and check the detection accuracy of the detector to avoid minor faults of the detector that are not discovered in time, resulting in inaccurate vibration detection results and affecting subsequent work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the structure of the simulation component and the drawing component of the present invention;

[0025] Figure 3 is a schematic diagram of the structure of the simulation component of the present invention;

[0026] Figure 4 is a schematic diagram of the longitudinal cross-sectional structure of a simulation component of the present invention;

[0027] Figure 5 is a schematic diagram of the test wheel structure of the present invention;

[0028] Figure 6 is a schematic diagram of the internal structure of the test wheel of the present invention;

[0029] Figure 7 It is a structural schematic diagram of a drawing component of the present invention;

[0030] Figure 8 It is a structural schematic diagram of the second drawing component of the present invention;

[0031] Fig. 9 It is a schematic diagram of the inner support plate structure of the present invention;

[0032] Fig.10 It is a schematic diagram of the friction wheel structure of the present invention.

[0033] The accompanying drawings are marked as follows: 1. Base; 2. Detection component; 21. Detector; 22. Telescopic rod; 23. Contact; 3. Simulation component; 31. Double-headed motor; 32. Gear box; 33. Gear No. 1; 34. Gear No. 2; 35. Gear No. 3; 36. Support; 37. Axle; 38. Test wheel; 39. Adjustment screw; 310. Cone block; 311. Inner slider; 312. Cam; 313. Slide rack; 314. Mounting plate; 315. Hammer; 4. Drawing component; 41. Ball screw; 42. Ball slider; 43. Mounting box; 44. Inner support plate; 45. Drawing paper; 46. Fulcrum rack; 47. Movable rod; 48. Drawing pen; 49. Friction wheel; 410. Friction block; 5. Roller; 6. Hydraulic support rod; 7. Track rack; 8. Rail. DETAILED DESCRIPTION

[0034] To make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention. Example 1

[0035] See also Figure 1 - Figure 2 A vibration detection device for the running part of an urban rail train comprises two track frames 7 and rails 8 arranged on the upper ends thereof, a base 1 and a detection assembly 2 are installed under the rails 8, the track frames 7 can raise the track to facilitate the staff to inspect the bottom of the running part of the train, and a notch is arranged on the rails 8. Four rollers 5 are installed at the bottom of the base 1, and the base 1 can be moved by the rollers 5. Four hydraulic struts 6 are also installed at the bottom of the base 1, and the four hydraulic struts 6 can prop up the base 1. The device also comprises a detection assembly 2 for vibration detection, and the detection assembly 2 is arranged on the base 1. Please refer to Figure 3 and Figure 7The detection assembly 2 includes a detector 21, on which a telescopic rod 22 is installed. The fixed end of the telescopic rod 22 is installed on the base 1. The telescopic end of the telescopic rod 22 is connected to a contact 23, and a spring is provided between the contact 23 and the fixed end of the telescopic rod 22. The contact 23 is in close contact with the bottom surface of the train running part. Due to the elastic force of the spring between the contact 23 and the telescopic rod 22, the contact 23 maintains pressure on the bottom of the train running part. The train running part transmits vibration to the contact 23, causing the contact 23 to shake up and down with the vibration. The contact 23 transmits the amplitude of the up and down shaking to the detector 21. The detector 21 can accurately detect the vibration as the pressure changes. The detector 21 can display the vibration data, thus achieving the purpose of vibration detection. Please refer to Figure 4 and Figure 7 The simulation component 3 is used to simulate the operation of the running part of the train. The simulation component 3 is arranged on the base 1. The simulation component 3 includes a double-headed motor 31. The double-headed motor 31 is installed on the base 1. Two gear boxes 32 are mirror-mounted on the base 1. A No. 1 gear 33 is rotatably installed in the gear box 32. The double-headed motor 31 is provided with two output ends. The two output ends of the double-headed motor 31 are respectively connected to the two No. 1 gears 33. A No. 2 gear 34 and two No. 3 gears 35 are also rotatably installed in the gear box 32. The No. 1 gear 33 is meshed at the side and lower part of the No. 2 gear 34. The two No. 3 gears 35 are both meshed at the top of the No. 2 gear 34. The double-headed motor 31 drives the two No. 1 gears 33 to rotate. The two No. 1 gears 33 respectively drive the two No. 2 gears 34 to rotate. The two No. 3 gears 35 located on the same side are a group. The two No. 2 gears 34 respectively drive the two groups of No. 3 gears 35 to rotate. Please refer to Figure 5 Four supports 36 are mounted on the base 1, and axles 37 are rotatably mounted on the supports 36. The four axles 37 are respectively connected to four No. 3 gears 35. A test wheel 38 is connected to the axle 37. The four test wheels 38 are divided into two groups, and each group of test wheels 38 consists of two. Figure 1 and Figure 4 The two groups of test wheels 38 are mirror-imaged. The two groups of test wheels 38 are respectively movable in the gaps of the two rails 8. The four wheel axles 37 are divided into two groups. When the two groups of No. 3 gears 35 rotate, they respectively drive the two groups of wheel axles 37 to rotate. The two groups of wheel axles 37 respectively drive the two groups of test wheels 38 to rotate. The train running part moves along the rails 8 so that the train wheelset is located on the two groups of test wheels 38. After the four hydraulic struts 6 prop up the base 1, the two groups of test wheels 38 lift the wheelset. The two test wheels 38 in the same group lift one train wheel, so that the wheelset of the train running part is separated from the rails 8. The four No. 3 gears 35 respectively drive the four test wheels 38 to rotate through the four wheel axles 37. The four test wheels 38 drive the train wheelset to rotate by rotating. The four test wheels 38 transmit the impact and load to the train wheelset, thereby achieving the effect of simulating the running of the train running part on the track at a fixed position in the maintenance station. Please refer to Figure 6The inner wall of the wheel shaft 37 is threadedly connected with an adjusting screw 39, and a handle is provided at one end of the adjusting screw 39, through which the staff can rotate the adjusting screw 39, and the other end of the adjusting screw 39 is connected to a frustum block 310, and four inner sliding blocks 311 are slidably installed on the inner wall of the test wheel 38, and the shape of the inner sliding block 311 is a horizontal H-shape, one end of the inner sliding block 311 is located on the outer surface of the test wheel 38, and the other end of the inner sliding block 311 is located inside the test wheel 38, and the four inner sliding blocks 311 are arranged in a circular array with the center of the test wheel 38 as the center, and the frustum block 310 is located inside the test wheel 38, and the four inner sliding blocks 311 are all in sliding contact with the frustum block 310, and when the adjusting screw 39 is rotated, it can drive the frustum block 310 to approach the four inner sliding blocks 31 1, so that the conical surface of the cone block 310 squeezes the four inner sliders 311. Since the cone block 310 limits the inner sliders 311, the inner sliders 311 can only move in a direction perpendicular to the adjusting screw 39, so that the four inner sliders 311 are squeezed and move in a direction away from the center of the test wheel 38, so that the four inner sliders 311 protrude from the outer surface of the test wheel 38, which can simulate the working condition of the protrusions on the track, thereby achieving the effect of vibration detection when the train running part is running on the track with protrusions. A reset spring is arranged between the inner slider 311 and the inner wall of the test wheel 38. The staff can drive the cone block 310 to reset by rotating the adjusting screw 39 in the opposite direction, and the four inner sliders 311 are reset by the elastic force of the reset spring. Please refer to Figure 4 The simulation component 3 also includes two slide racks 313, which are slidably mounted on the two gear boxes 32, and a portion of the slide rack 313 is located inside the gear box 32. The end of the third gear 35 away from the wheel shaft 37 is connected to a cam 312, and the cam 312 is eccentrically arranged on the third gear 35. The movement trajectory of the cam 312 is a circle. Two slide slots are arranged on the slide rack 313, and the two slide slots of the slide rack 313 are in contact with the two cams 312 respectively. When the two cams 312 rotate synchronously, the slide rack 313 is driven by the two slide slots in the gear box 32 The top of the slide frame 313 is connected to a mounting plate 314, on which a plurality of hammers 315 are mounted. The plurality of hammers 315 on the mounting plate 314 continuously strike the bottom of the train running part during the up and down reciprocating movement. The hammers 315 themselves have a certain elastic force and will not cause damage to the bottom of the train running part, thereby achieving the effect of simulating the collision of some small stones or foreign objects on the train running part when the train running part is on the track. The hammers 315 are arranged to be detachable, and the staff can adjust the number of hammers 315 on the two mounting plates 314.

[0036] See also Figure 1-Figure 3, through the cooperation of the simulation component 3 and the detection component 2, when the train running part stops on the rail 8, the two sets of test wheels 38 are used to lift the wheelset and drive the wheelset to rotate, thereby simulating the train running on the track, and obtaining the amplitude of the train running part through the contact 23. The detection result is displayed through the detector 21, so that the train running part is simulated to run on the track and perform vibration detection at a fixed position in the maintenance station, thereby improving the convenience of detection. Through the setting of the inner slider 311, the four inner sliders 311 on the test wheel 38 can be raised, thereby simulating the running of the train running part on the track with protrusions, and the adjusting screw 39 can also adjust the amplitude of the inner slider 311, thereby increasing the range of working condition simulation. Through the setting of multiple hammers 315, when the train running part is vibrating, the multiple hammers 315 can continuously hit the bottom of the train running part, simulating the working condition of small stones and foreign objects hitting the bottom of the train running part when the train running part is actually running, further improving the working condition simulation range of the simulation component 3. Example 2

[0037] Based on the above examples, please refer to Figure 7 - Figure 8 , the drawing component 4 is used to convert the vibration amplitude into a waveform graph. The drawing component 4 is arranged on the base 1. The drawing component 4 includes a ball slider 42. The ball slider 42 is slidably installed on the base 1. A ball screw 41 is connected between the two No. 2 gears 34. The ball screw 41 is provided with a threaded groove. The ball slider 42 is slidably connected to the threaded groove of the ball screw 41 through the ball. The ball slider 42 is connected to the installation box 43. When the ball screw 41 rotates, the ball slider 42 is driven to move back and forth left and right through the cooperation of the ball and the threaded groove. The ball slider 42 drives the installation box 43 to move synchronously. The interior of the installation box 43 is connected to an inner support plate 44 through a spring sheet, and a fulcrum frame 46 is installed on the top of the detector 21. Please refer to Fig. 9A movable rod 47 is rotatably mounted on the fulcrum frame 46, one end of the movable rod 47 is connected to a drawing pen 48, and the other end of the movable rod 47 is hinged to the contact 23 through a sliding hinge. The distance from the connection point between the fulcrum frame 46 and the movable rod 47 to the contact 23 is smaller than the distance from the connection point to the drawing pen 48. When the contact 23 shakes up and down, the lever principle is used to make the drawing pen 48 expand the range of up and down movement while following the up and down shaking of the contact 23. A cover is provided on the installation box 43, and a plurality of drawing papers 45 are placed between the cover of the installation box 43 and the inner support plate 44. The inner support plate 44 in the installation box 43 props up the plurality of drawing papers 45 so that the uppermost The drawing paper 45 of the first layer always keeps in contact with the cover, and the drawing pen 48 is in contact with one of the drawing papers 45. While the drawing pen 48 is moving up and down, the installation box 43 moves from right to left, so that the drawing pen 48 draws the amplitude in the form of a waveform on the drawing paper 45. There is a range line on the drawing paper 45. If the peak of the waveform does not exceed the range line, the amplitude meets the requirement. When the installation box 43 moves to the leftmost side, a cycle of vibration test is completed, and the staff can take out the top layer of drawing paper 45 and observe the waveform. The drawing pen 48 is set to be detachable. After the drawing pen 48 is removed, the drawing component 4 will no longer draw the waveform. Please refer to Figure 8 and Fig.10 , paper outlets are respectively provided on both sides of the installation box 43, and two friction wheels 49 are rotatably installed on the installation box 43. The two friction wheels 49 are respectively located above the two paper outlets, and the friction wheel 49 contacts one of the drawing papers 45, and there is a large friction force between the friction wheel 49 and the drawing paper 45. The outer walls of the two gear boxes 32 are respectively fixedly connected with friction blocks 410, and the two friction wheels 49 contact the two friction blocks 410 respectively during the movement, and there is a large friction force between the friction wheels 49 and the friction blocks 410, so that the friction blocks 410 drive the friction wheels 49 to rotate during the contact with the friction wheels 49. When the friction wheels 49 rotate, they can push the top layer of the drawing paper 45 to one side, and the drawing paper 45 slides out through the paper outlet on one side of the installation box 43, which is convenient for the staff to take.

[0038] Since the detector 21 and the contact 23 operate in a vibrating environment for a long time, the sensor inside the detector 21 is prone to failure. The staff can regularly install the drawing pen 48, compare the waveform graph with the data of the detector 21 to check the data accuracy of the detector 21. In the case of a failure of the detector 21, the drawing component 4 can also be used for vibration detection to avoid affecting the detection work due to the failure of the detector 21. Through the setting of the drawing component 4, the drawing pen 48 uses the lever principle to amplify the vibration of the contact 23, and then converts the amplitude into a waveform graph and draws it on the drawing paper 45. The waveform graph can observe the amplitude more intuitively, and can replace the detector 21 for vibration detection in the case of a failure of the detector 21. At the same time, it can also regularly compare and check the detection accuracy of the detector 21 to avoid minor failures of the detector 21 that are not discovered in time, resulting in inaccurate vibration detection results, which affects subsequent work. Through the setting of two friction wheels 49, when a cycle of vibration detection is completed, the friction wheel 49 can slide out by rotating the action drawing 45, which is convenient for the staff to take.

[0039] With the above structure, the working principle of this case is that the train running part moves along the rail 8 so that the wheelset of the train is located on the two groups of test wheels 38. The track frame 7 can raise the track to facilitate the staff to inspect the bottom of the train running part. The base 1 can be moved by rollers 5. After the wheelset of the train is located on the two groups of test wheels 38, the four hydraulic struts 6 are started so that the four hydraulic struts 6 prop up the base 1. The four supports 36 on the base 1 move upward with the base 1. The four supports 36 drive the two groups of test wheels 38 to move upward so that the two groups of test wheels 38 lift the wheelset. The two test wheels 38 of the same group lift up one train wheel, so that the wheelset of the train running part is separated from the rail 8. The double-headed motor 31 is started, and the double-headed motor 31 drives the two No. 1 gears 33 to rotate. The two No. 1 gears 33 drive the two No. 2 gears 34 to rotate, the two No. 2 gears 34 drive the four No. 3 gears 35 to rotate, the four No. 3 gears 35 respectively drive the four test wheels 38 to rotate through the four wheel axles 37, and the four test wheels 38 drive the train wheels to rotate by rotating, thereby achieving the effect of simulating the running of the train running part on the track, the contact 23 is close to the bottom surface of the train running part, due to the elastic force of the spring between the contact 23 and the telescopic rod 22, the contact 23 maintains pressure on the bottom of the train running part, the train running part transmits the vibration to the contact 23, so that the contact 23 shakes up and down with the vibration, and the contact 23 transmits the amplitude of the up and down shaking to the detector 21, the detector 21 can display the vibration data, thereby achieving the effect of vibration detection. The staff can rotate the adjusting screw 39 by the handle. When the adjusting screw 39 rotates, the frustum block 310 can be driven to move toward a position close to the four inner sliders 311, so that the frustum block 310 squeezes one end of the four inner sliders 311 located inside the test wheel 38. Due to the limiting effect of the test wheel 38 on the four inner sliders 311, the four inner sliders 311 are squeezed and move in a direction away from the center of the test wheel 38. Before the movement, the end of the inner slider 311 away from the frustum block 310 is located on the same curved surface as the outer surface of the test wheel 38. When the end of the inner slider 311 moves away from the center of the test wheel 38, the inner slider 311 moves in a direction away from the center of the test wheel 38. After moving in the direction of the center, the inner slider 311 protrudes from the outer surface of the test wheel 38. The number of rotations of the adjusting screw 39 can adjust the height of the protrusion of the inner slider 311. After the four inner sliders 311 are protruded, the test wheel 38 can simulate the working condition of the presence of protrusions on the track when driving the wheelset to rotate, thereby achieving the effect of vibration detection of the train running on the track with protrusions. The staff can drive the cone block 310 to reset by rotating the adjusting screw 39 in the opposite direction. The four inner sliders 311 are reset by the elastic force of the reset spring, and the surface of the test wheel 38 is no longer protruding.When the two No. 3 gears 35 in the same gear box 32 rotate, they drive the two cams 312 to rotate. The cams 312 are eccentrically set, and the movement trajectory of the cams 312 is a circle. Since the gear box 32 limits the slide frame 313, when the two cams 312 rotate synchronously, the slide frame 313 is driven to slide back and forth on the gear box 32 through the two slides. The slide frame 313 drives the mounting plate 314 to move back and forth up and down. The multiple hammers 315 on the mounting plate 314 continuously hit the bottom of the train running part during the up and down reciprocating movement. The hammers 315 themselves have a certain elastic force and will not cause damage to the bottom of the train running part, thereby achieving the effect of simulating the collision of some small stones or foreign objects on the train running part when the train running part is running on the track. The hammers 315 are set to be detachable, and the staff can adjust the number of hammers 315 on the two mounting plates 314. Through the cooperation of the simulation component 3 and the detection component 2, when the train running part stops on the rail 8, the two sets of test wheels 38 lift up the wheelset and drive the wheelset to rotate, thereby simulating the train running on the track. The amplitude of the train running part is obtained through the contact 23, and the detection result is displayed through the detector 21, so that the train running part can be vibrated in the maintenance station without moving long distances, which improves the convenience of detection. Through the setting of the inner slider 311, the four inner sliders 311 on the test wheel 38 can be raised, thereby simulating the running of the train running part on the track with protrusions. The adjusting screw 39 can also adjust the amplitude of the protrusion of the inner slider 311, which increases the range of working condition simulation. Through the setting of multiple hammers 315, the multiple hammers 315 can continuously hit the bottom of the train running part during vibration detection, simulating the working condition of small stones and foreign objects hitting the bottom of the train running part when the train running part is actually running, further improving the working condition simulation range of the simulation component 3.

[0040] The two No. 2 gears 34 drive the ball screw 41 to rotate when rotating, and the base 1 limits the ball slider 42. When the ball screw 41 rotates, the ball slider 42 is driven to move back and forth by the cooperation between the ball and the thread groove. The ball slider 42 drives the installation box 43 to move synchronously. When the contact 23 shakes up and down, it drives the movable rod 47 to swing back and forth. Since the distance from the connection point of the fulcrum frame 46 and the movable rod 47 to the contact 23 is smaller than the distance from the connection point to the drawing pen 48, the lever principle is used to make the drawing pen 48 expand the range of up and down movement while following the up and down shaking of the contact 23. The inner support plate 44 in the installation box 43 props up multiple drawing papers 45, so that the top drawing paper 4 5 always keeps contact with the cover, while the drawing pen 48 moves up and down, the installation box 43 moves from right to left, so that the drawing pen 48 draws the amplitude in the form of a waveform on the drawing paper 45. The drawing paper 45 is provided with a range line. If the peak of the waveform does not exceed the range line, the amplitude meets the requirement. When the installation box 43 moves to the leftmost side, a cycle of vibration test is completed, and the staff can take out the top layer of the drawing paper 45 and observe the waveform. In the next stage, the double-headed motor 31 is reversed to simulate the working condition of the reverse operation of the train running part. In this process, the ball slider 42 drives the installation box 43 to move from left to right, and the drawing pen 48 draws the waveform on the new drawing paper 45. When the installation box 43 is about to move to the far left, a friction wheel 49 on the left side of the installation box 43 contacts the friction block 410 on the left gear box 32. Since there is a large friction force between the friction wheel 49 and the friction block 410, the friction block 410 drives the friction wheel 49 to rotate during the contact with the friction wheel 49. The friction wheel 49 contacts the top layer of the drawing paper 45, and there is also a large friction force between the friction wheel 49 and the drawing paper 45. When the friction wheel 49 rotates, it can push the top layer of the drawing paper 45 to the left, and the drawing paper 45 slides out through the paper outlet on the left side of the installation box 43, which is convenient for the staff to take. Similarly, when the installation box 43 moves to the right, the friction wheel 49 on the right side contacts the friction block 410 on the right side. The drawing paper 45 on the top layer slides out from the paper outlet on the right side of the installation box 43. After each cycle of testing, the drawing paper 45 with the waveform graph drawn can slide out automatically, which is convenient for the staff to take. The drawing pen 48 is set to be detachable. After the drawing pen 48 is removed, the drawing component 4 no longer draws the waveform graph. Since the detector 21 and the contact 23 operate in a vibrating environment for a long time, the sensor inside the detector 21 is prone to failure. The staff can regularly install the drawing pen 48 to compare the waveform graph with the data of the detector 21 to check the data accuracy of the detector 21. In the case of a failure of the detector 21, the drawing component 4 can also be used for vibration detection to avoid affecting the detection work due to the failure of the detector 21.By setting the drawing component 4, the drawing pen 48 uses the lever principle to amplify the vibration of the contact 23, and then converts the amplitude into a waveform diagram and draws it on the drawing paper 45. The waveform diagram can observe the amplitude more intuitively, and can replace the detector 21 for vibration detection in the event of a failure of the detector 21. At the same time, it can also regularly compare and check the detection accuracy of the detector 21 to avoid minor failures of the detector 21 that are not discovered in time, resulting in inaccurate vibration detection results and affecting subsequent work. By setting two friction wheels 49, when a cycle of vibration detection is completed, the friction wheel 49 can slide out by rotating the action drawing 45, making it easy for the staff to take it.

[0041] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A vibration detection device for a running part of an urban rail train, comprising two track frames (7) and rails (8) arranged at their upper ends, a base (1) and a detection component (2) being installed below the rails (8), the detection component (2) being used for vibration detection, characterized in that: Also includes: The simulation component (3) is used to simulate the operation of the running part of the train; the simulation component (3) comprises a double-headed motor (31), the double-headed motor (31) is mounted on a base (1), two gear boxes (32) are mounted on the base (1) in a mirror-like manner, a first gear (33) is rotatably mounted in the gear box (32), the double-headed motor (31) is provided with two output ends, the two output ends of the double-headed motor (31) are respectively connected to the two first gears (33), and the gear box (32) is also rotatably mounted. A No. 2 gear (34) and two No. 3 gears (35) are installed on the base (1). Four supports (36) are installed on the supports (36). A wheel axle (37) is rotatably installed on the support (36). A test wheel (38) is connected to the wheel axle (37). The four test wheels (38) are divided into two groups. One group of test wheels (38) has two test wheels. The two groups of test wheels (38) are arranged in a mirror image. A notch is arranged on the steel rail (8). The two groups of test wheels (38) are respectively movable in the notches of the two steel rails (8). The detection assembly (2) comprises a detector (21), a telescopic rod (22) is mounted on the detector (21), a fixed end of the telescopic rod (22) is mounted on the base (1), a contact (23) is connected to the telescopic end of the telescopic rod (22), a spring is arranged between the contact (23) and the fixed end of the telescopic rod (22), and four hydraulic support rods (6) are also mounted on the bottom of the base (1); The first gear (33) is meshed with the lower side of the second gear (34), the two third gears (35) are meshed with the upper side of the second gear (34), and the four wheel shafts (37) are respectively connected to the four third gears (35); The inner wall of the wheel shaft (37) is threadedly connected with an adjusting screw (39), one end of the adjusting screw (39) is provided with a handle, the other end of the adjusting screw (39) is connected with a frustum block (310), and the inner wall of the test wheel (38) is slidably mounted with four inner sliding blocks (311); The inner slider (311) has a transverse H-shaped shape, one end of the inner slider (311) is located on the outer surface of the test wheel (38), and the other end of the inner slider (311) is located inside the test wheel (38). The four inner sliders (311) are arranged in a circular array with the center of the test wheel (38) as the center. The frustum block (310) is located inside the test wheel (38), and the four inner sliders (311) are all in sliding contact with the frustum block (310). A reset spring is arranged between the inner slider (311) and the inner wall of the test wheel (38).

2. A vibration detection device for a running part of an urban rail train according to claim 1, characterized in that: The simulation component (3) further comprises two slide slot frames (313), wherein the two slide slot frames (313) are respectively slidably mounted on two gear boxes (32), wherein a portion of the slide slot frames (313) is located inside the gear box (32), and a cam (312) is connected to one end of the third gear (35) away from the wheel shaft (37), and a mounting plate (314) is connected to the top of the slide slot frame (313), and a plurality of hammers (315) are mounted on the mounting plate (314).

3. A vibration detection device for a running part of an urban rail train according to claim 2, characterized in that: The cam (312) is eccentrically arranged on the third gear (35), and two slide grooves are arranged on the slide groove frame (313), and the two slide grooves of the slide groove frame (313) are in contact with the two cams (312) respectively.

4. The vibration detection device for the running part of an urban rail train according to claim 3, characterized in that: The invention also comprises a drawing component (4) for converting the vibration amplitude into a waveform diagram, wherein the drawing component (4) comprises a ball slider (42), wherein the ball slider (42) is slidably mounted on the base (1), a ball screw (41) is connected between the two second gears (34), the ball screw (41) is provided with a thread groove, the ball slider (42) is slidably connected to the thread groove of the ball screw (41) via a ball, the ball slider (42) is connected to a mounting box (43), the interior of the mounting box (43) is connected to an inner support plate (44) via a spring sheet, a fulcrum frame (46) is mounted on the top of the detector (21), a movable rod (47) is rotatably mounted on the fulcrum frame (46), one end of the movable rod (47) is connected to a drawing pen (48), and the other end of the movable rod (47) is hinged to the contact (23) via a sliding hinge.

5. The vibration detection device for the running part of an urban rail train according to claim 4, characterized in that: The installation box (43) is provided with a cover, a plurality of drawing papers (45) are placed between the cover of the installation box (43) and the inner support plate (44), and the drawing pen (48) is in contact with one of the drawing papers (45).

6. The urban rail train running gear vibration detection device according to claim 5, characterized in that: Paper outlets are respectively arranged on both sides of the installation box (43); two friction wheels (49) are rotatably mounted on the installation box (43); the two friction wheels (49) are respectively located above the two paper outlets; the friction wheels (49) are in contact with one of the drawing papers (45); the outer walls of the two gear boxes (32) are respectively fixedly connected with friction blocks (410); the two friction wheels (49) are in contact with the two friction blocks (410) during movement.

7. The urban rail train running gear vibration detection device according to claim 6, characterized in that: Four rollers (5) are installed at the bottom of the base (1).

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