Pantograph detection device

Abstract

A pantograph detection device comprises a base and a master control device, a mounting frame, a detection device and a mounting part which are arranged on the base, a pantograph is mounted on the base through the mounting part, the detection device is mounted on the mounting frame, and the detection device is arranged above the pantograph and can move up and down along the mounting frame; the detection device comprises a test frame, a tension and pressure sensor, a stress frame, a mounting plate, a driving device and two position sensors, the mounting frame is provided with a guide rail, the mounting plate is mounted on the guide rail, the stress frame is mounted on the mounting plate, the tension and pressure sensor is arranged on the bottom surface of the mounting plate, and the driving device is arranged on the bottom surface of the mounting plate. The testing frame is arranged at the bottom end of the tension and pressure sensor, and the two position sensors are arranged at the upper end and the lower end of the mounting frame respectively. The detection device is simple in structure, accurate and direct in detection and capable of testing static pressure of different positions of the pantograph. The detection device can be repeatedly used, has no abrasion problem and is long in service life; the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pantograph detection, in particular to a pantograph detection device. Background Art

[0002] The pantographs used in railway locomotives and EMUs have aging problems in their movement mechanisms and springs during long-term operation, so their performance needs to be regularly tested and adjusted to avoid pantograph-net accidents that affect the safe operation of electric locomotives. At present, the pantograph test benches equipped in my country's railway system generally use a steel wire rope hanging under the bow head, and control the lifting and lowering of the pantograph through a driving mechanism to detect the pantograph pressure, height and time information. However, after long-term use, this structure will have the disadvantages of the steel wire rope getting stuck in the groove, wear, and poor test accuracy and safety.

[0003] At present, there are also other structural detections, such as Chinese patent CN202022216407.1, which discloses a test mechanism for the pantograph raising and lowering time, which includes a pressure detection device, a displacement detection device and a timing device; the pressure detection device is used to detect whether there is a pressure change at the pressure interface of the pneumatic device, and the pressure interface is connected to the pantograph raising pipeline of the pantograph; the displacement detection device is used to detect whether the pantograph reaches a preset height; the timing device is used to record the time from the pressure change at the pressure interface to the pantograph reaching the preset height. However, this kind of detection device is relatively complex to detect, and is not suitable for the detection of static pressure at any different heights of the pantograph, and the positioning and detection accuracy of the pantograph is also poor. Utility Model Content

[0004] Therefore, in view of the deficiencies in the prior art, the purpose of the utility model is to provide a pantograph detection device.

[0005] A pantograph detection device comprises a base and a main control device, a mounting frame, a detection device and a mounting piece arranged on the base, wherein the mounting piece fixes the pantograph to the base, the detection device is mounted on the mounting frame, and the detection device is arranged directly above the pantograph and can move up and down along the mounting frame; the detection device comprises a test frame, a tension and pressure sensor, a force frame, a mounting plate, a drive device and two position sensors, the mounting frame is provided with a guide rail extending up and down, the mounting plate is mounted on the guide rail and can move up and down along the guide rail, the force frame is mounted on the mounting plate, the tension and pressure sensor is arranged on the bottom surface of the mounting plate, the test frame is mounted on the bottom end of the tension and pressure sensor, and the two position sensors are respectively arranged at the upper and lower ends of the mounting frame.

[0006] Furthermore, the driving device includes a motor arranged on a mounting plate, and the motor is provided with an encoder capable of calculating position distance.

[0007] Furthermore, it also includes a positioning insulating member, which is installed on the bottom surface of the pantograph, and the mounting member is installed in the limiting hole to lock it on the fixing member.

[0008] Furthermore, the bottom of the positioning insulating member is provided with an outer edge and a raised portion, the raised portion is provided on the inner side of the outer edge, and the downwardly extending length of the raised portion is longer than the outer edge, and the raised portion is embedded in the limiting hole.

[0009] Furthermore, a downward limiting groove is arranged on the fixing member corresponding to the position of the limiting hole, the shape and size of the limiting groove are consistent with the raised portion of the pantograph, and the limiting hole is arranged on the bottom surface of the limiting groove.

[0010] Furthermore, a rack extending up and down is provided on the mounting frame, and a driving gear is provided at the inner end of the motor, and the driving gear is meshed with the rack.

[0011] Furthermore, the test frame includes two pressing plates and a connecting plate connected to the two pressing plates, the connecting plate is arranged above the two pressing plates, and the length of the pressing plate is longer than the overall width of a plurality of carbon slide plates on the pantograph.

[0012] Furthermore, the base is also provided with a slide rail corresponding to the position of the mounting frame, and the mounting frame is mounted on the slide rail and can move left and right and front and back along the slide rail.

[0013] In summary, a pantograph detection device of the utility model positions the pantograph by setting a fixing part, the test frame detects the static pressure at any position of the pantograph, and the main control device, position sensor, and drive device detect the pantograph raising and lowering time and height. During the entire test process, the positioning is precise, the lifting and lowering is smooth, and the detection of static contact force is also extremely accurate and intuitive. In addition, the overall structure is simple and the connection is good. The utility model is highly practical and has a strong promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the use status of a pantograph detection device of the utility model;

[0015] Figure 2 for Figure 1 The structural diagram of the pantograph detection device;

[0016] Figure 3 for Figure 2 A schematic diagram of the structure of the detection device from another perspective;

[0017] Figure 4 for Figure 2 A schematic diagram of the side structure of the detection device;

[0018] Figure 5 for Figure 1 A schematic diagram of the structure of the fixing device in use;

[0019] Figure 6 for Figure 5 Another implementation structure in . DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0021] like Figures 1 to 6 As shown, the utility model provides a pantograph detection device 100, which is used to detect the static contact force, pantograph raising time, and pantograph raising time of a tram pantograph 200. Four positioning insulators 210 are arranged at the bottom of the pantograph 200, and the positioning insulators 210 are locked on the pantograph 200 by fasteners.

[0022] In this embodiment, the positioning insulator 210 is provided in a semi-spherical shape, with a mounting plane provided at the top, an outer edge 211 and a raised portion 212 provided at the bottom, the raised portion 212 is provided at the inner side of the outer edge 211, and the length of the raised portion 212 extending downward is longer than the outer edge. The outer diameter of the raised portion 212 is gradually reduced from top to bottom; the bottom end of the raised portion 212 is provided with a horizontally extending positioning surface 213, and a positioning hole 214 is provided on the positioning surface 213. In addition, a bow head is provided at the top of the pantograph 200, and a plurality of carbon slide plates 220 arranged in a row are provided on the bow head.

[0023] The pantograph detection device includes a base 10 and a main control device 20, a mounting frame 30, a detection device 40, and a mounting component 50 arranged on the base 10. The mounting component 50 fixes the pantograph 200 on the base 10. The detection device 40 is installed on the mounting frame 30. The detection device 40 is arranged directly above the pantograph 200 and can move up and down along the mounting frame 30.

[0024] On the bottom surface of the base 10, support feet 11 and universal wheels 12 are provided to facilitate movement and the stability of placement. On the top surface of the base 10, a plurality of fixing members 13 are provided. In this embodiment, four fixing members 13 are evenly arranged, and the four fixing members are distributed in a square shape. The fixing member 13 is arranged in a "ji" shape, and a limiting hole 131 penetrating up and down is provided at the top of the fixing member 13. The aperture of the limiting hole 131 is the same as the outer diameter of the middle part of the convex part 212 of the pantograph 200. During installation, the bottom end of the outer edge part 211 of the pantograph 200 is limited on the top surface of the fixing member 13, the convex part 212 is embedded in the limiting hole 131, and the mounting member 50 is screwed into the positioning hole 214 from below the fixing member 13, and the top end of the handle of the mounting member 50 abuts against the bottom surface of the top of the fixing member 13, so as to realize the fixed installation of the pantograph 200.

[0025] In addition, in another embodiment, a downward limiting groove 132 is provided at the position corresponding to the limiting hole 131a on the fixing member 13a. The shape and size of the limiting groove 132 are the same as those of the convex part 212 of the pantograph, and it is arranged in an arc surface structure with a larger upper part and a smaller lower part, so as to facilitate guiding and positioning during installation. The limiting hole 131a is provided on the bottom surface of the limiting groove 132; the aperture of the limiting hole 131a only needs to be the same as the outer diameter of the screw of the mounting member 50, so that no special structure bolt is required.

[0026] On both sides of the front end surface of the mounting frame 30, two guide rails 31 extending in the up and down direction are provided, and a rack 32 extending in the up and down direction is provided between the two guide rails 31. The detection device 40 includes a test frame 41, a tensile and compressive force sensor 42, a force-bearing frame 43, a mounting plate 44 and a driving device 45. Both ends of the mounting plate 44 are clamped and installed on the guide rails 31 and can move up and down along the guide rails 31. The force-bearing frame 43 is installed on the mounting plate 44. The tensile and compressive force sensor 42 is arranged on the bottom surface of the mounting plate 44. The test frame 41 is installed at the bottom end of the tensile and compressive force sensor 42. The driving device 45 includes a motor and a driving gear. The motor is installed on the mounting frame 30, and the driving gear meshes with the rack 32.

[0027] The motor drives the driving gear to rotate, and the driving gear moves up and down along the rack 32 to drive the detection device 40 to adjust its position. In addition, the detection device 40 further includes two position sensors 46, and the two position sensors 46 are respectively arranged at the set highest stroke position and lowest stroke position points. In addition, buffer blocks are further provided at the top and bottom ends between the two guide rails 31 of the mounting frame 30 to prevent the detection device 40 from being damaged due to out-of-control upward or downward movement of the program.

[0028] In this embodiment, the test frame 41 is roughly H-shaped, including two pressing plates 411 and a connecting plate 412 connected to the two pressing plates 411, and the connecting plate 412 is arranged above the two pressing plates 411. The length of the pressing plate is longer than the overall width of the carbon slide plates 220 on the pantograph 200, so that the force can be evenly applied and accurately pressed during the pressing process. Furthermore, a plurality of baffles are also provided at the bottom end of the pressing plate 411, and the distance between two adjacent baffles is consistent with the distance between the carbon slide plates, so that the carbon slide plates can be preliminarily positioned well to ensure that the test frame 41 is in the most central position; at the same time, it is easy to promptly discover whether the installation is balanced.

[0029] The base 10 is also provided with a slide rail (not shown) corresponding to the position of the mounting frame 30. The mounting frame 30 is installed on the slide rail and can move left and right, front and back along the slide rail to adjust the position appropriately, so that the test frame 41 is always in the center position for pantograph detection of different specifications, ensuring the accuracy of tension and pressure. In addition, a CCD detection device is provided on the mounting frame 30, and the CCD detection device is used to detect a number of carbon slides 220 and the flatness of the carbon slides 220 in the horizontal direction. The CCD detection device takes a photo of the carbon slide and transmits the information to the main control device 10. The main control device 10 compares the photo with the set photo to ensure that the carbon slides 220 are set horizontally and the flatness of the carbon slides 220 themselves. If the carbon slides 220 are not on the same horizontal plane, there may be a problem of uneven force during the pressure test; after the problem is discovered, it is easy to repair.

[0030] During operation, the pantograph 200 is first installed on the pantograph detection device 100. The pneumatic structure of the pantograph 200 drives the bow head to rise. During the rising process, the main control device 20 receives the signal of the position sensor 46, rises from the bow drop height to the highest working height, and automatically calculates the bow raising time. The same method is then used to calculate the bow lowering time. During this process, it can be checked whether the bow raising process is smooth and whether there is any impact. In this embodiment, the motor 45 is equipped with an encoder, which can accurately calculate the displacement, so that the bow raising height can be converted by the main control device 20. When testing the static contact force, the test frame 41 is moved to the height of the static pressure position required for testing, and the pantograph is pneumatically raised until the bottom surface of the test frame 41 contacts the top surface of the carbon slide plate. The tension pressure sensor senses the static pressure of the pantograph at this position and transmits the pressure information to the main control device 20. When the static pressure at a lower position or a higher position needs to be tested, the test frame 41 presses the bow head down to the required position or moves up with the bow head to the required position for another test. The main control device 20 detects and analyzes the state and value during the test, processes data and stores information.

[0031] In summary, a pantograph detection device of the utility model positions the pantograph by setting a fixing part, the test frame detects the static pressure at any position of the pantograph, and the main control device 20, the position sensor 46, and the drive device 45 detect the pantograph raising and lowering time and height. During the entire test process, the positioning is precise, the lifting and lowering is stable, and the detection of the static contact force is also extremely accurate and intuitive. In addition, the overall structure is simple and the connection is good. The utility model is highly practical and has a strong promotion significance.

[0032] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it is not to be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the patent of the utility model shall be based on the attached claims.

Claims

1. A pantograph detection device, characterized in that: It includes a base and a main control device, a mounting bracket, a detection device, and a mounting member disposed on the base. The mounting member mounts a pantograph on the base. The detection device is installed on the mounting bracket. The detection device is disposed directly above the pantograph and can move up and down along the mounting bracket. The detection device includes a test frame, a tensile and compressive force sensor, a force-bearing frame, a mounting plate, a driving device, and two position sensors. A vertically extending guide rail is provided on the mounting bracket. The mounting plate is installed on the guide rail and can move up and down along the guide rail. The force-bearing frame is mounted on the mounting plate. The tensile and compressive force sensor is disposed on the bottom surface of the mounting plate. The test frame is installed at the bottom end of the tensile and compressive force sensor. The two position sensors are respectively disposed at the upper and lower ends of the mounting bracket.

2. A pantograph detection device as claimed in claim 1, characterized in that: The driving device includes a motor disposed on the mounting plate, and an encoder capable of calculating position distance is provided on the motor.

3. A pantograph detection device as claimed in claim 2, characterized in that: A plurality of fixing members are provided on the top surface of the base. The fixing members are arranged in a "ji" shape, and a vertically penetrating limiting hole is provided at the top of the fixing member.

4. A pantograph detection device as claimed in claim 3, characterized in that: It further includes a positioning insulating member. The positioning insulating member is installed on the bottom surface of the pantograph. The mounting member is installed in the limiting hole to lock it on the fixing member.

5. A pantograph detection device as claimed in claim 4, characterized in that: An outer edge and a protruding portion are provided at the bottom of the positioning insulating member. The protruding portion is disposed inside the outer edge, and the length of the protruding portion extending downward is longer than that of the outer edge. The protruding portion is embedded in the limiting hole.

6. A pantograph detection device as claimed in claim 4, characterized in that: A downward limiting groove is provided on the fixing member corresponding to the position of the limiting hole. The shape and size of the limiting groove are consistent with those of the protruding portion of the pantograph. The limiting hole is provided on the bottom surface of the limiting groove.

7. A pantograph detection device as claimed in claim 5, characterized in that: A vertically extending rack is provided on the mounting bracket. A driving gear is provided at the inner end of the motor. The driving gear meshes with the rack.

8. A pantograph detection device as claimed in claim 1, characterized in that: The test frame includes two pressing plates and a connecting plate connecting the two pressing plates. The connecting plate is disposed above the two pressing plates. The length of the pressing plate is longer than the overall width of a plurality of carbon sliding plates on the pantograph.

9. A pantograph detection device as claimed in claim 1, characterized in that: A slide rail is further provided on the base corresponding to the position of the mounting bracket. The mounting bracket is installed on the slide rail and can move left and right, forward and backward along the slide rail.

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