Calibration ruler for contact network detection

Abstract

The utility model discloses a contact network detection calibration ruler, which belongs to the field of rail transit and comprises a scale base, the bottom of the scale base is fixedly connected with a bottom plate, the scale base is provided with a scale plate capable of moving along the height direction of the scale base through a sliding chute, and the bottom of the scale plate is provided with a limiting assembly. The scale plate is detachably mounted on the scale base, the scale plate is positioned and fixed on the scale base through a limiting assembly, a wire clamp mechanism is detachably mounted on the scale plate through a positioning hole, a calibration plate is embedded in the position, below the positioning hole, of the scale plate, and the limiting assembly comprises a mounting groove formed in the position close to the bottom of the scale plate; and a limiting end is arranged in the mounting groove. According to the overhead line system detection calibration ruler, overhead line systems with different guide heights can be simulated during calibration of overhead line system detection equipment, so that the calibration efficiency and accuracy are improved in a comparison mode, components of the calibration ruler can be stored and detached, and the calibration ruler is convenient to carry and use.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transportation, in particular to a contact network detection calibration ruler. Background Art

[0002] As a device that directly supplies power to electric locomotives, the operating status of the contact network is directly related to the safe operation of the train and the transportation efficiency. Contact network detection is a crucial link in the field of rail transportation, especially in electrified railways and urban rail transportation systems. Contact network detection is based on the principle of triangulation, and the detection work is completed through industrial cameras and various sensors installed on the baseline. Before the contact network is detected, the industrial cameras and various sensors used for detection need to be calibrated to correct the corresponding parameter values.

[0003] At present, the calibration test of contact network detection is realized through a calibration ruler, which uses a calibration ruler of fixed length to simulate the contact line position of the contact network, and then performs sensor detection calibration. However, due to the fixed size of the calibration ruler, the simulated contact network is always in the same height position. When calibrating the sensor detection, the calibration is performed through a single height data and cannot be repeatedly verified, which can easily lead to errors in contact network detection. Moreover, when calibrating the industrial camera, the calibration ruler cannot meet the calibration needs and a calibration plate needs to be added, resulting in low calibration efficiency of the calibration ruler. Utility Model Content

[0004] The utility model aims to propose a contact network detection calibration ruler in order to solve the problem that the existing calibration ruler cannot guarantee the repeatability of the calibration result during calibration, resulting in low accuracy of the calibration result and thus easily causing contact network detection errors.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technology: a contact network detection calibration ruler, including a scale base, the bottom of the scale base is fixedly connected to a bottom plate, a scale plate that can move along the height direction of the scale base is arranged on the scale base through a slide groove, a limiting component is arranged at the bottom of the scale plate, and the scale plate is positioned and fixed on the scale base through the limiting component, a wire clamp mechanism is detachably installed on the scale plate through a positioning hole, and a calibration plate is embedded and installed on the scale plate at a position below the positioning hole.

[0006] As a further description of the above technical solution: the limit assembly includes an installation groove opened near the bottom of the scale plate, a limit end is arranged in the installation groove, and a spring is arranged between the limit end and the inner wall of the installation groove, and a limit hole matching the limit end is opened on the scale base.

[0007] As a further description of the above technical solution: a through hole connected to the mounting groove is provided on the rear side of the scale plate, a pull rod is provided on the limit end which passes through the through hole and extends to the rear of the scale plate, and a slot matching with the pull rod is provided on the scale base.

[0008] As a further description of the above technical solution: the wire clamp mechanism includes a baffle, a plug plate matching the positioning hole is arranged on one side of the baffle, a limiting block is arranged on one end of the plug plate away from the baffle, and a clamp assembly is arranged on the other side of the baffle through a bracket.

[0009] As a further description of the above technical solution: the number of the positioning holes is several and they are evenly arranged along the height direction of the scale plate, the plug plate passes through the positioning holes and the limit block is against the rear side of the scale plate.

[0010] As a further description of the above technical solution: the clamp assembly includes a C-shaped fixing frame, a cushion block is arranged on the fixing frame, and a clamping plate is arranged on the top of the fixing frame through a screw.

[0011] As a further description of the above technical solution: an arc-shaped groove is opened on the top of the cushion block, and the shape of the clamping plate matches the groove.

[0012] As a further description of the above technical solution: the front side surface of the calibration plate is flush with the front side surface of the scale plate.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. The simulated contact wire height data is adjusted through the positioning holes on the scale plate, so that the calibration of the contact network detection sensor is no longer limited to a single calibration data, and the factors can be adjusted conveniently and quickly, so as to repeat the verification, thereby effectively improving the calibration accuracy of the calibration ruler, avoiding the error of the contact network detection sensor after the calibration is completed, and visual calibration can be performed in conjunction with the calibration plate on the scale plate. When calibrating the industrial camera, there is no need to add a calibration plate, which improves the calibration efficiency;

[0015] 2. The calibration ruler adopts the combination of a scale base and a scale plate. The scale plate can be stored in the scale base, and the wire clamp mechanism used to fix the contact line can be easily disassembled, so that the entire component of the calibration ruler can be stored and disassembled, thereby saving space when carrying and transporting the calibration ruler and improving the carrying and transportation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The overall structure provided according to the embodiment of the utility model is shown Figure 1 ;

[0017] Figure 2 The overall structure provided by the embodiment of the utility model is shown Figure 2 ;

[0018] Figure 3 A schematic structural diagram of a scale base provided according to an embodiment of the utility model is shown;

[0019] Figure 4 A schematic diagram of the structure of a scale plate provided according to an embodiment of the utility model is shown;

[0020] Figure 5 A schematic structural diagram of a wire clamp mechanism provided according to an embodiment of the utility model is shown;

[0021] Figure 6 A structural schematic diagram of a clamp assembly provided according to an embodiment of the utility model is shown.

[0022] Legend:

[0023] 1. Scale base; 11. Limit hole; 12. Notch; 2. Bottom plate; 3. Slide groove; 4. Scale plate; 41. Mounting groove; 42. Limit end; 43. Spring; 44. Pull rod; 45. Through hole; 5. Positioning hole; 6. Wire clamp mechanism; 61. Baffle; 62. Insert plate; 63. Limit block; 64. Bracket; 65. Clamp assembly; 651. Fixing frame; 652. Spacer block; 653. Screw; 654. Clamp; 7. Calibration plate. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Reference Figure 1-Figure 6 The present embodiment provides a contact network detection calibration ruler, comprising a scale base 1, a bottom of the scale base 1 is fixedly connected to a bottom plate 2, a scale plate 4 movable along the height direction of the scale base 1 is arranged on the scale base 1 through a slide groove 3, a limit assembly is arranged at the bottom of the scale plate 4, and the scale plate 4 is positioned and fixed on the scale base 1 through the limit assembly, a wire clamp mechanism 6 is detachably installed on the scale plate 4 through a positioning hole 5, the number of the positioning holes 5 is several and is evenly arranged along the height direction of the scale plate 4, and a calibration plate 7 is embedded and installed at a position below the positioning hole 5 on the scale plate 4.

[0026] In the utility model, the scale base 1 is fixed by the bottom base plate 2, and then the scale plate 4 in the slide groove 3 is pulled out upward and fixed by the limit assembly. During calibration, the wire clamp mechanism 6 is installed on the scale plate 4 through the positioning hole 5, and then the contact wire of the contact network is clamped on the wire clamp mechanism 6 to simulate the position of the contact wire. The contact network sensor to be calibrated is fixed on the baseline, and then the detection data of the sensor is collected and compared with the calibration data. After that, the height position of the wire clamp mechanism 6 is adjusted to adjust the guide height of the contact wire, and then the detection data is re-collected and compared with the calibration data. The accuracy of calibration is improved by repeated collection and comparison. When the industrial camera performs visual calibration, calibration can be performed through the calibration plate 7 on the scale plate 4.

[0027] It should be noted that when the scale plate 4 is pulled out from the scale base 1 and fixed, the height formed by the scale base 1 and the scale plate 4 is fixed, and height scales are engraved on the scale base 1 and the scale plate 4, so that the scale base 1 and the scale plate 4 can form a calibrated height.

[0028] Specifically, Figure 2-Figure 4 As shown, the limit assembly includes a mounting groove 41 opened near the bottom of the scale plate 4, a limit terminal 42 is arranged in the mounting groove 41, and a spring 43 is arranged between the limit terminal 42 and the inner wall of the mounting groove 41, and a limit hole 11 matching with the limit terminal 42 is opened on the scale base 1.

[0029] Among them, there are two pairs of limiting holes 11 and they are respectively distributed near the bottom and near the top of the scale base 1. When the calibration ruler is transported and carried, the scale plate 4 is stored in the slide groove 3. At this time, the limiting end 42 is engaged in the limiting hole 11 near the bottom of the scale base 1. When calibration is required, the limiting end 42 compresses the spring 43 and shrinks in the mounting groove 41, so that the limiting end 42 is separated from the limiting hole 11, and then the scale plate 4 is pulled upward. When the limiting end 42 moves to the limiting hole 11 near the upper end of the scale base 1, the limiting end 42 pops out under the action of the spring 43 and is engaged in the upper limiting hole 11, so that the scale plate 4 and the scale base 1 form a calibration ruler.

[0030] Specifically, Figure 2 and Figure 3 As shown, a through hole 45 connected to the mounting groove 41 is provided on the rear side of the scale plate 4, a pull rod 44 is provided on the limit end 42, which penetrates the through hole 45 and extends to the rear of the scale plate 4, and a notch 12 is provided on the scale base 1 to match the pull rod 44. The pull rod 44 can be used to pull the limit end 42 to move more labor-savingly and quickly, so that when the scale plate 4 is pulled out from the scale base 1 and the scale plate 4 is stored, the limit end 42 can be quickly compressed and moved into the mounting groove 41, thereby improving the efficiency of pulling out and storing the scale plate 4.

[0031] Specifically, Figure 1 and Figure 5 As shown, the wire clamp mechanism 6 includes a baffle 61, and a plug plate 62 matching the positioning hole 5 is arranged on one side of the baffle 61, a limit block 63 is arranged on the end of the plug plate 62 away from the baffle 61, and a clamp assembly 65 is arranged on the other side of the baffle 61 through a bracket 64, the plug plate 62 passes through the positioning hole 5 and the limit block 63 is against the rear side of the scale plate 4.

[0032] Among them, the plug plate 62 is a straight plate structure with a certain degree of elasticity. When the clamp assembly 65 is installed, the two plug plates 62 are first squeezed together toward the middle, and then the plug plate 62 is inserted into the positioning hole 5 together with the limit block 63. As the plug plate 62 moves backward, the limit block 63 passes through the positioning hole 5 and then the plug plate 62 is reset and the limit block 63 is against the rear side of the scale plate 4, thereby realizing the fixation of the clamp assembly 65 on the bracket 64. When disassembling, only the two limit blocks 63 need to be squeezed toward the middle, and then the bracket 64 drives the baffle 61 to be pulled forward, which facilitates the disassembly of the clamp assembly 65, making it more convenient to transport and carry the calibration ruler. In addition, through this plug-in structure, the height of the clamp assembly 65 can be adjusted quickly and conveniently, and then the contact line guide height position can be adjusted conveniently during calibration.

[0033] Specifically, Figure 5 and Figure 6 As shown, the clamp assembly 65 includes a C-shaped fixed frame 651, a cushion block 652 is arranged on the fixed frame 651, a clamp plate 654 is arranged on the top of the fixed frame 651 through a screw 653, an arc-shaped groove is opened on the top of the cushion block 652, and the shape of the clamp plate 654 matches the groove. When performing the contact line height simulation, the contact line is placed on the cushion block 652 of the fixed frame 651, and then the screw 653 is rotated. The screw 653 rotates and descends to drive the clamp plate 654 to descend and contact the contact line. As the screw 653 continues to descend, the clamp plate 654 cooperates with the cushion block 652 to clamp and fix the contact line of the contact network;

[0034] It should be noted that both the pad 652 and the clamp 654 are made of rubber material, which can prevent the contact line from being crushed when the contact line is clamped, and the bottom of the screw 653 is rotatably connected to the clamp 654. After the clamp 654 descends with the screw 653 and contacts the contact line, one hand fixes the clamp 654 so that it matches the groove of the pad 652, and then the other hand continues to rotate the screw 653 to enable the clamp 654 to perform the clamping work.

[0035] Among them, the front side surface of the calibration plate 7 is flush with the front side surface of the scale plate 4, which can prevent the calibration plate 7 from protruding, so that the scale plate 4 can be stored in the slide groove 3 when the calibration ruler is transported and carried, avoiding the protruding calibration plate 7 from affecting the storage work of the scale plate 4.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A contact network detection calibration ruler, characterized in that: The invention comprises a scale base (1), the bottom of the scale base (1) is fixedly connected to a bottom plate (2), a scale plate (4) movable along the height direction of the scale base (1) is arranged on the scale base (1) through a slide groove (3), a limit assembly is arranged at the bottom of the scale plate (4), and the scale plate (4) is positioned and fixed on the scale base (1) through the limit assembly, a wire clamp mechanism (6) is detachably installed on the scale plate (4) through a positioning hole (5), and a calibration plate (7) is embedded and installed at a position below the positioning hole (5) on the scale plate (4).

2. The contact network detection calibration ruler according to claim 1, characterized in that: The limit assembly comprises a mounting groove (41) provided near the bottom of the scale plate (4), a limit terminal (42) being arranged in the mounting groove (41), a spring (43) being arranged between the limit terminal (42) and the inner wall of the mounting groove (41), and a limit hole (11) matching with the limit terminal (42) being provided on the scale base (1).

3. The contact network detection calibration ruler according to claim 2, characterized in that: The rear side of the scale plate (4) is provided with a through hole (45) connected to the mounting groove (41); the limit end (42) is provided with a pull rod (44) penetrating the through hole (45) and extending to the rear of the scale plate (4); and the scale base (1) is provided with a notch (12) matching with the pull rod (44).

4. The contact network detection calibration ruler according to claim 1, characterized in that: The wire clamp mechanism (6) comprises a baffle (61), a plug plate (62) matching with the positioning hole (5) is arranged on one side of the baffle (61), a limit block (63) is arranged at one end of the plug plate (62) away from the baffle (61), and a clamp assembly (65) is arranged on the other side of the baffle (61) via a bracket (64).

5. The contact network detection calibration ruler according to claim 4, characterized in that: The number of the positioning holes (5) is several and they are evenly arranged along the height direction of the scale plate (4); the insert plate (62) passes through the positioning holes (5) and the limit block (63) abuts against the rear side of the scale plate (4).

6. The contact network detection calibration ruler according to claim 4, characterized in that: The clamp assembly (65) comprises a C-shaped fixing frame (651), a cushion block (652) is arranged on the fixing frame (651), and a clamping plate (654) is arranged on the top of the fixing frame (651) via a screw rod (653).

7. A contact network detection calibration ruler according to claim 6, characterized in that: The top of the cushion block (652) is provided with an arc-shaped groove, and the shape of the clamping plate (654) matches the groove.

8. The contact network detection calibration ruler according to claim 1, characterized in that: The front side surface of the calibration plate (7) is flush with the front side surface of the scale plate (4).

Images