Automatic retraction and storage device for current guide wire of direct current detection instrument of overhead line system
By designing the automatic retraction and storage device of the flow wire used in the contact network DC electrical tester, the problems of long consolidation and storage time and large volume of the flow wire are solved, and the rapid recycling and automatic limit of the flow wire is realized, which improves the detection efficiency and is easy to carry.
Patent Information
- Application Number
- CN202421915472.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-08
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-08-08
AI Technical Summary
During the use of existing DC electrical appliances in contact networks, the diversion wires are easily twisted and knotted to each other, which causes operators to spend a lot of time sorting and storing, and the storage box is large in size, making it inconvenient to carry.
A contact network DC detection instrument automatic retraction and storage device is designed, including a storage box, a winding assembly and a limiting assembly. The winding assembly is used to wrap and store the flow wires, and the limit assembly is used to fix the flow wires to ensure that the flow wires are automatically limited when in use.
It realizes rapid recycling and automatic limiting of the diversion wire, reduces the time for operators to organize and store, improves detection efficiency, and has a smaller storage box size and more convenient to carry.
Smart Images
Figure CN223002520U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catenary DC electroscopes, and particularly relates to an automatic retractable storage device for a current-carrying wire of a catenary DC detection instrument. Background Art
[0002] Article 6.1.1 of "GB 26859-2011 Code for Electric Power Safety Work - Electric Power Line Part" stipulates that when working on lines and distribution equipment, technical measures to ensure safety such as power outage, voltage testing, installation of grounding wires and personal safety wires, hanging warning signs, and installation of barriers (fences) shall be taken. Therefore, voltage testing is an essential operation before working on the rail transit catenary. An electroscope is a special tool for voltage testing operations.
[0003] Article 15.3.21 of "GB 50157—2013 Code for Design of Subways" stipulates that the height of the contact wire above the rail surface for overground lines shall preferably be 4600 mm, and shall not be less than 4400 mm in difficult sections; the height of the contact wire above the rail surface for overground lines in vehicle depots shall preferably be 5000 mm. The height of the contact wire above the rail surface in tunnels shall not be less than 4040 mm. Article 155 of the "Regulations on Railway Technical Management" stipulates that the height of the contact wire above the top surface of the rail shall not exceed 6500 mm; in sections and intermediate stations, it shall not be less than 5700 mm (not less than 5330 mm for old line reconstruction); in marshalling yards, section stations, and individual larger intermediate station yards, it shall not be less than 6200 mm; the height shall preferably be the same for station yards and sections; for lines for double-stack container transportation, it shall not be less than 6330 mm. The elevation range of the railway catenary is 5150 mm to 6500 mm. Considering the above two codes, when the rail transit system adopts the catenary form as the traction power supply network, the height range of the contact wire above the rail surface is 4 - 7 m. In summary, the working interval height of the rail transit catenary DC electroscope is generally not less than 4 m.
[0004] The main components of the catenary DC electroscope are a telescopic insulating rod, a grounding current-carrying wire, and an alarm. To ensure safety and convenience in use, generally, the extended length of the insulating rod of the catenary DC electroscope is not shorter than 4 m, the length of the grounding current-carrying wire is not shorter than 7 m, and the grounding current-carrying wire and the insulating rod are assembled separately.
[0005] During the use of the existing catenary DC electroscope, due to the random placement of the current-carrying wire, the current-carrying wires often twist and knot with each other. During use, operators need to spend a lot of time organizing the current-carrying wires. Moreover, after the detection is completed, the long current-carrying wires need to be organized and placed in a storage box. However, since only grooves are provided in the storage box to place the current-carrying wires, when using it next time, the current-carrying wires need to be combed again, which takes a lot of combing time. In addition, in the existing storage box, the telescopic insulating rod is also placed in the storage box, resulting in a large volume of the storage box and occupying a large space when carrying. Utility Model Content
[0006] Purpose of the utility model: to provide an automatic retractable and retractable device for the guide wire of a contact network DC detection instrument, which solves the above-mentioned problems existing in the prior art.
[0007] Technical solution: A device for automatically retracting and storing the guide wire of a contact network DC detection instrument, comprising a storage box, a first mounting portion being installed in the transverse direction on the top wall of the storage box, a second mounting portion being installed in the longitudinal direction on one side wall of the storage box, the first mounting portion and the second mounting portion being installed on adjacent side walls, the first mounting portion and the second mounting portion being used for installing insulating rods, a winding assembly being installed in the storage box, a guide wire being wound around the winding assembly, a limiting assembly being installed on the top surface of the storage box, the guide wire passing through the limiting assembly and being connected to a grounding clamp.
[0008] Preferably, the winding assembly includes a base, which is installed in the storage box, a rotating shaft is installed on the base, a chassis is sleeved on the rotating shaft, a mainspring is sleeved on the rotating shaft, one end of the mainspring is connected to the rotating shaft, the mainspring is located in the chassis, a winding drum is installed on the chassis, the winding drum is connected to the other end of the mainspring, and the guide wire is wound on the winding drum.
[0009] Preferably, the limit assembly includes a guide column, which is a column with a hollow middle part. A limit ring is installed at the bottom of the guide column, and the inner diameter of the limit ring is smaller than the inner diameter of the guide column. Two groups of limit cards are installed on the top of the guide column, and the limit cards are arranged opposite to each other. A clamping part is slidably installed in the guide column, and a reset spring is installed on the limit ring. The other end of the reset spring is connected to the lower end of the clamping part. When the clamping part is located in the guide column, the clamping part clamps and limits the guide wire, and the reset spring is in a compressed state. The limit card abuts against the top of the clamping part. Under the action of the limit card, the clamping part maintains a clamped state and is located in the guide column.
[0010] Preferably, the clamping portion includes a sliding ring, the bottom of which is connected to the return spring, the sliding ring is slidably installed in the guide column, a plurality of inclined plates are installed in a circumferential array on the top of the sliding ring, the inclined plate and the sliding ring form a trumpet shape, a first protrusion with a triangular cross-section is installed on the side of the top of the inclined plate close to the guide column, and a second protrusion with an obtuse triangular cross-section is installed on the side wall of the inclined plate opposite to the first protrusion, when the guide column presses the inclined plate and the inclined plates approach each other, the second protrusion is used to clamp the guide wire and limit it, and at this time, the first protrusion is used to abut against the limit card to keep the clamping portion in a clamped state in the guide column.
[0011] Preferably, the limit card includes a rectangular block located inside the guiding column. A rectangular hole is formed in the inner wall of the guiding column, and the rectangular hole communicates with the hollow part of the guiding column. The rectangular block operatively passes through the rectangular hole. A connecting rod is installed on the side wall of the rectangular block, and a compression spring is installed on the connecting rod. One end of the compression spring is connected to the rectangular block, and the other end of the compression spring is connected to the inner wall of the hollow part of the guiding column. A circular hole is formed in the guiding column, and the circular hole is oppositely arranged with the rectangular hole. The connecting rod passes through the circular hole, and a control board is installed at the other end of the connecting rod. By applying an external force to the control board, the rectangular block and the connecting rod are driven to reciprocate along the axis of the circular hole.
[0012] Preferably, the clockwork spring is made of a metal material.
[0013] Preferably, the first mounting part and the second mounting part have the same structure and are both made of an elastic material.
[0014] Preferably, it further includes two handlebars installed on the opposite outer walls of the storage box.
[0015] Beneficial effects: The present utility model relates to an automatic retracting and storing device for a current-carrying wire of a catenary DC detection instrument. By installing a wire winding assembly in the storage box, after the detection is completed, the current-carrying wire can be wound and placed into the storage box through the wire winding assembly, thereby realizing the rapid recovery of the current-carrying wire. There is no need for an operator to separately organize the current-carrying wire, which speeds up the organization speed of the current-carrying wire.
[0016] Secondly, when it is necessary to use a catenary DC voltage detector, only an external force needs to be applied to the current-carrying wire, and the current-carrying wire wound on the wire winding assembly can be moved out of the storage box. After the current-carrying wire reaches the required length, under the action of the wire winding assembly, the current-carrying wire is limited, and the current-carrying wire can be kept outside the storage box, so that it can be used without organizing the current-carrying wire before use, improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;
[0018] Figure 2 is a schematic diagram of the internal structure of the present utility model;
[0019] Figure 3 is a schematic diagram of the wire winding assembly of the present utility model;
[0020] Figure 4 is an exploded view of the wire winding assembly of the present utility model;
[0021] Figure 5 is a sectional view of the wire winding assembly of the present utility model.
[0022] Figures 1 to 5The reference numerals in the drawings are: 1, storage box; 2, first mounting portion; 3, second mounting portion; 4, insulating rod; 5, winding assembly; 6, diversion wire; 7, winding assembly; 8, handle; 9, grounding wire outlet; 51, base; 52, rotating shaft; 53, chassis; 54, spring; 55, winding disc; 71, guiding post; 72, limiting ring; 73, return spring; 74, sliding ring; 75, inclined plate; 76, first convex block; 77, second convex block; 78, rectangular block; 79, connecting rod; 710, compression spring; 711, control board. Detailed implementation manner
[0023] As Figures 1 to 5 shown, the present utility model provides a technical solution: an automatic retractable storage device for the diversion wire of a catenary DC detection instrument, including a storage box 1. Among them, the storage box 1 is made of transparent organic material, and handles 8 are respectively installed on the mutually opposite outer walls of the storage box 1. The storage box 1 is a hollow structure and is made of acrylonitrile-butadiene-styrene copolymer material. As Figure 1 shown, a first mounting portion 2 is installed horizontally on the top wall of the storage box 1, and a second mounting portion 3 is installed vertically on one side wall of the storage box 1. The first mounting portion 2 and the second mounting portion 3 are installed on adjacent side walls. The first mounting portion 2 and the second mounting portion 3 are used to install the insulating rod 4, that is, the insulating rod 4 can be placed in a horizontal state or a vertical state according to the current placement space environment. The first mounting portion 2 and the second mounting portion 3 have the same structure and are both made of elastic material. In this embodiment, the first mounting portion 2 and the second mounting portion 3 are installed on the outer wall of the storage box 1 by screws. A winding assembly 5 is installed in the storage box 1, and a diversion wire 6 is wound on the winding assembly 5. A limiting assembly 7 is installed on the top surface of the storage box 1. The diversion wire 6 passes through the limiting assembly 7 and is connected to the electroscope rod. A grounding wire outlet 9 is installed on the top surface of the storage box 1. The diversion wire 6 passes through the grounding wire outlet 9 and is connected to the grounding clip. When the portable catenary DC electroscope is used, the grounding clip is grounded, an external force is applied to the diversion wire 6 to make the diversion wire 6 disengage from the winding assembly 5, and the electroscope rod is connected to the high-altitude cable. At this time, the storage box is placed on the ground. After the detection is completed, the electroscope rod disengages from the high-altitude cable, and the diversion wire 6 is wound into the storage box 1 through the winding assembly 5, so that the rapid recovery of the diversion wire 6 can be realized, and the operator does not need to separately organize the diversion wire 6, shortening the organization and storage time of the diversion wire 6.
[0024] In a further embodiment, the winding assembly 5 includes a base 51 installed in the storage box 1. A rotating shaft 52 is installed on the base 51. A chassis 53 is sleeved on the rotating shaft 52. A clockwork spring 54 is sleeved on the rotating shaft 52. The clockwork spring 54 is made of a metal material. In this embodiment, the clockwork spring 54 is made of 65Mn. The width of the clockwork spring 54 is 8 mm and the load is 20 N. One end of the clockwork spring 54 is connected to the rotating shaft 52. The clockwork spring 54 is located inside the chassis 53. In this embodiment, the inner radius of the chassis 53 is 32 mm. A winding disc 55 is installed on the chassis 53. The winding disc 55 is rotatably connected to the rotating shaft 52. The winding disc 55 is connected to the other end of the clockwork spring 54. The diversion wire 6 is wound around the winding disc 55. When an external force is applied to pull the diversion wire 6 outwards, the winding disc 55 rotates accordingly, and the clockwork spring 54 gradually tightens. Until the diversion wire 6 stops moving, the clockwork spring 54 stops tightening. At this time, the diversion wire 6 is limited and fixed under the action of the limiting assembly 7. When the use is over, the limiting and fixing of the limiting assembly 7 is cancelled. At this time, the clockwork spring 54 expands, drives the winding disc 55 to rotate, and the diversion wire 6 will automatically wind around the winding disc 55 to complete the collection of the diversion wire 6.
[0025] In a further embodiment, the limiting component 7 includes a guiding column 71 which is a hollow column in the middle. A limiting ring 72 is installed at the bottom of the guiding column 71. The inner diameter of the limiting ring 72 is smaller than that of the guiding column 71. Two groups of limiting cards are installed at the top of the guiding column 71 and are arranged oppositely to each other. The limiting card includes a rectangular block 78 located inside the guiding column 71. A rectangular hole is formed in the inner wall of the guiding column 71, and the rectangular hole communicates with the hollow part of the guiding column 71. The rectangular block 78 operatively passes through the rectangular hole. A connecting rod 79 is installed on the side wall of the rectangular block 78, and a compression spring 710 is installed on the connecting rod 79. One end of the compression spring 710 is connected to the rectangular block 78, and the other end of the compression spring 710 is connected to the inner wall of the hollow part of the guiding column 71. A circular hole is formed in the guiding column 71 and is arranged oppositely to the rectangular hole. The connecting rod 79 passes through the circular hole, and the other end of the connecting rod 79 is installed with a control plate 711. By applying an external force to the control plate 711, the rectangular block 78 and the connecting rod 79 are driven to reciprocate along the axis of the circular hole. A clamping part is slidably installed in the guiding column 71. A return spring 73 is installed on the limiting ring 72, and the other end of the return spring 73 is connected to the lower end of the clamping part. When the clamping part is located inside the guiding column 71, the clamping part clamps and limits the diversion line 6. The clamping part includes a sliding ring 74. The bottom of the sliding ring 74 is connected to the return spring 73, and the sliding ring 74 is slidably installed in the guiding column 71. A plurality of inclined plates 75 are circumferentially arranged at the top of the sliding ring 74. The inclined plates 75 and the sliding ring 74 form a horn shape. A first convex block 76 with a triangular cross-section is installed on the side of the top of the inclined plate 75 close to the guiding column 71. A second convex block 77 with an obtuse triangular cross-section is installed on the side wall of the inclined plate 75 opposite to the first convex block 76. When the guiding column 71 squeezes the inclined plates 75 and the inclined plates 75 approach each other, the second convex block 77 is used to tightly hold and limit the diversion line 6. At this time, the first convex block 76 is abutted against the rectangular block 78 of the limiting card, so that the clamping part maintains a clamped state inside the guiding column 71, and the return spring 73 is in a compressed state. When it is necessary to cancel the limitation of the diversion line 6, an external force is applied to the control plate 711 of the limiting card, driving the whole limiting card to move along the axis of the circular hole, so that the rectangular block 78 is separated from the second convex block 77. At this time, the sliding ring 74 moves circumferentially along the guiding column 71 under the action of the return spring 73. When the inclined plates 75 move away from the guiding column 71 and move away from each other, the limitation of the diversion line 6 is cancelled. At this time, the diversion line 6 is wound around the winding disc 55 under the action of the clockwork spring 54.
[0026] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various equivalent transformations can be made to the technical solutions of the present invention, and these equivalent transformations all belong to the protection scope of the present invention.
Claims
1. An automatic retractable device for the guide wire of a direct current detection instrument for a contact network, characterized in that: The invention comprises a storage box (1), wherein a first mounting portion (2) is installed on a top wall of the storage box (1) in a horizontal direction, and a second mounting portion (3) is installed on a side wall of the storage box (1) in a longitudinal direction, wherein the first mounting portion (2) and the second mounting portion (3) are installed on adjacent side walls, and the first mounting portion (2) and the second mounting portion (3) are used to install an insulating rod (4), wherein a winding assembly (5) is installed in the storage box (1), and a guide wire (6) is wound around the winding assembly (5), and a limit assembly (7) is installed on the top surface of the storage box (1), and the guide wire (6) passes through the limit assembly (7) and is connected to a grounding clamp.
2. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 1 is characterized in that: The winding assembly (5) comprises a base (51) installed in the storage box (1); a rotating shaft (52) is installed on the base (51); a chassis (53) is sleeved on the rotating shaft (52); a spring (54) is sleeved on the rotating shaft (52); one end of the spring (54) is connected to the rotating shaft (52); the spring (54) is located in the chassis (53); a winding reel (55) is installed on the chassis (53); the winding reel (55) is connected to the other end of the spring (54); and the guide wire (6) is wound on the winding reel (55).
3. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 1 is characterized in that: The limiting assembly (7) comprises a guide column (71), the guide column (71) being a column with a hollow center, a limiting ring (72) being installed at the bottom of the guide column (71), the inner diameter of the limiting ring (72) being smaller than the inner diameter of the guide column (71), two groups of limiting cards being installed at the top of the guide column (71), the limiting cards being arranged opposite to each other, a clamping portion being slidably installed inside the guide column (71), a return spring (73) being installed on the limiting ring (72), the other end of the return spring (73) being connected to the lower end of the clamping portion, when the clamping portion is located inside the guide column (71), the clamping portion clamps and limits the guide wire (6), the return spring (73) is in a compressed state, the limiting card abuts against the top of the clamping portion, and under the action of the limiting card, the clamping portion is kept in a clamped state and located inside the guide column (71).
4. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 3 is characterized in that: The clamping portion comprises a sliding ring (74), the bottom of which is connected to the return spring (73), the sliding ring (74) being slidably mounted in the guide column (71), a plurality of inclined plates (75) being mounted in a circumferential array on the top of the sliding ring (74), the inclined plates (75) and the sliding ring (74) forming a trumpet shape, a first protrusion (76) having a triangular cross section being mounted on the side of the top of the inclined plate (75) close to the guide column (71), and a second protrusion (77) having an obtuse triangular cross section being mounted on the side wall of the inclined plate (75) opposite to the first protrusion (76), when the guide column (71) presses the inclined plate (75) and the inclined plates (75) approach each other, the second protrusion (77) is used to clamp and limit the guide wire (6), and at this time, the first protrusion (76) is used to abut against the limit card, so that the clamping portion is kept in a clamped state in the guide column (71).
5. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 3 is characterized in that: The limit card comprises a rectangular block (78) which is located inside the guide column (71). A rectangular hole is formed on the inner wall of the guide column (71). The rectangular hole is connected to the hollow part of the guide column (71). The rectangular block (78) can be operatively passed through the rectangular hole. A connecting rod (79) is installed on the side wall of the rectangular block (78). A compression spring (710) is installed on the connecting rod (79). One end of the compression spring (710) is connected to the rectangular block (78). The other end of the compression spring (710) is connected to the inner wall of the hollow part of the guide column (71). A circular hole is formed on the guide column (71). The circular hole is arranged opposite to the rectangular hole. The connecting rod (79) passes through the circular hole. A control plate (711) is installed on the other end of the connecting rod (79). By applying an external force to the control plate (711), the rectangular block (78) and the connecting rod (79) are driven to move back and forth along the axis of the circular hole.
6. The automatic retractable and retractable device for conducting wire of a contact network DC detection instrument according to claim 2, characterized in that: The clockwork spring (54) is made of metal material.
7. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 1 is characterized in that: The first mounting portion (2) and the second mounting portion (3) have the same structure and are both made of elastic material.
8. The automatic retractable storage device for the current guide wire of the contact network DC detection instrument according to claim 1 is characterized in that: It also includes two sets of handles (8) installed on mutually opposing outer walls of the storage box (1).