Rigid-flexible transition device replacement auxiliary device

Abstract

The utility model discloses a rigid-flexible transition device replacement auxiliary device which comprises a supporting frame made of square steel, a plurality of clamping feet arranged at the bottom of the supporting frame and used for being fixedly connected with a vehicle track in a clamping mode. The front end of the transmission lever is of a bevel structure, and the middle of the transmission lever is rotatably arranged between the supporting rods on the two sides of the top of the supporting frame through a rotating shaft. The hoisting clamp comprises a flexible connecting piece and an electric connecting wire clamp, one end of the flexible connecting piece is connected with the bevel structure of the transmission lever, the other end of the flexible connecting piece is movably connected with the electric connecting wire clamp, and the electric connecting wire clamp is used for clamping a busbar contact wire; the adjusting mechanism comprises an adjusting bolt and a fixing clamp, the fixing clamp is used for being fixedly connected with the busbar, one end of the adjusting bolt is in threaded connection with the bevel structure, the other end of the adjusting bolt is in threaded connection with the fixing clamp, and the adjusting bolt is connected to the lower portion of the tail end of the transmission lever through a balance weight structure and a suspension wire.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit contact network maintenance equipment technical field especially, and relates to a rigid flexible transition device replacement auxiliary device. BACKGROUND

[0002] In the rail transit electrification contact network system, the suspension mode is divided into rigid suspension and flexible suspension, generally under the condition of adapting to different line demand, the contact network suspension of a line often simultaneously adopts the two types, and in the combination part of the two suspensions, rigid flexible transition area, its structure is more special.

[0003] When the rigid flexible transition contact line or busbar is replaced, there are many problems, such as the tension of the flexible section contact line, when the busbar terminal inclined segment is embedded in the contact line, the pressure between the pay-off trolley and the contact line is too large, so that the pay-off trolley is difficult to push to embed the contact line operation. The existing solution is to hold the contact line upwards by multiple people, and simultaneously push and pull the pay-off trolley by multiple people. This operation method has the following obvious defects: the operation process is difficult and complicated, multiple people are needed to work together, and the manpower investment is large; the operation time is long, which leads to low work efficiency; and in the operation process, there are uncertain safety hazards that endanger personal and equipment safety, which can easily cause safety accidents.

[0004] Therefore, a new auxiliary device is needed to solve these problems. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a rigid flexible transition device replacement auxiliary device which is light in structure, convenient to operate and safe and reliable, realizes controllable lifting of the contact line through optimization design of the lever principle, adjusting mechanism and counterweight structure, and solves the problems of manpower dependence, low efficiency and safety hazards in the existing operation.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical means:

[0007] A rigid flexible transition device replacement auxiliary device comprises:

[0008] The support frame is made of square steel, the bottom of which is provided with a plurality of clamping feet for clamping and fixing with the vehicle track, and the support frame provides a stable support foundation for the entire auxiliary device. The clamping feet are used for clamping with the vehicle track, so that the support frame can be stably placed on the vehicle track, ensuring the stability of the device during operation.

[0009] The transmission lever is provided with an angle structure at the front end, and the middle part of the transmission lever is rotatably arranged between the two side supporting rods on the top of the supporting frame. The transmission lever uses the principle of lever to transmit the force applied by the adjusting mechanism to the lifting clamp to realize the lifting operation of the contact line.

[0010] The lifting clamp comprises a flexible connecting piece and an electric connecting wire clamp. One end of the flexible connecting piece is connected with the angle structure of the transmission lever, and the other end is movably connected with the electric connecting wire clamp. The electric connecting wire clamp is used for clamping the busbar contact line. The electric connecting wire clamp is used for clamping the contact line. Through the connection with the transmission lever, the height of the contact line can be lifted or lowered under the action of the lever.

[0011] The adjusting mechanism comprises an adjusting bolt and a fixing clamp. The fixing clamp is used for fixedly connecting with the busbar. One end of the adjusting bolt is connected with the angle structure through threads, and the other end is connected with the fixing clamp. By rotating the adjusting bolt, the distance between the busbar and the contact line is lifted or lowered.

[0012] The counterweight structure is connected below the end of the transmission lever through a lifting wire. The counterweight structure is suspended at the end of the transmission lever through the lifting wire. The weight of the counterweight block can be adjusted according to the tension of the contact line to offset part of the tension and further reduce the operation difficulty, especially for large tension scenes.

[0013] Preferably, the included angle between the transmission lever and the angle structure is 140°-160°, preferably 150°. The angle design makes the ratio of the power arm and the resistance arm of the lever higher than that of the traditional 180° straight rod, which improves the force transmission efficiency and saves labor.

[0014] Preferably, the supporting frame is welded by square steel. The rotating shaft is arranged at the middle part of the two groups of transversely arranged supporting rods on the top of the supporting frame. The rotating shaft penetrates the transmission lever and makes the transmission lever rotate around the rotating shaft as the fulcrum. The rotating shaft penetrates the middle part of the transmission lever to form a rigid fulcrum, which ensures smooth rotation of the lever without jamming.

[0015] Preferably, the flexible connecting piece comprises a fixed ring connected with the angle structure and a connecting wire. The connecting wire is galvanized iron wire or steel wire rope. The flexible connecting piece and the electric connecting wire clamp are movably connected by the connecting wire in an "8" shape. The flexible connecting piece is wrapped around the electric connecting wire clamp in an "8" shape, which ensures the connection strength and adapts to the spatial position deviation of the contact line.

[0016] Preferably, the fixed clamp is a U-shaped seat structure, the fixed clamp is provided with a clamping bolt in a matched mode, and the closed end of the fixed clamp is connected with the end of the adjusting bolt through a threaded structure, the clamping bolt penetrates through the open end of the front end of the fixed clamp, the fixed clamp is locked on the busbar, the U-shaped open end of the fixed clamp is inserted into the busbar, and the fixed clamp can be fixed in a short time by being tightened through the clamping bolt, the efficiency is obviously improved compared with traditional welding fixation, and the fixed clamp is suitable for various cross-section busbars such as rectangular busbars and T-shaped busbars.

[0017] Preferably, the length of the threaded section of the adjusting bolt is 100-150 mm, the length can provide sufficient adjusting stroke, the adjusting accuracy can be ensured, and different installation environments can be adapted.

[0018] Preferably, the electric connection wire clamp is a wedge-shaped wire clamp or a bolt-shaped wire clamp, the clamping surface of the electric connection wire clamp is provided with anti-skid tooth patterns or rubber pad layers, the contact wire clamping friction force is improved, and the contact wire is prevented from slipping off during the adjusting process.

[0019] Preferably, the bottom clamping leg of the support frame is provided with a concave recess on the inner side, and the recess facilitates mutual clamping with the rail.

[0020] Preferably, the threaded holes are arranged below the transmission lever and the rotating shaft, the threaded holes are provided with fixing bolts, the fixing bolts are connected with the rotating shaft after penetrating through the threaded holes below the transmission lever, the transmission lever and the rotating shaft are relatively locked, the position of the transmission lever can be locked after adjustment, the position of the contact wire is prevented from changing due to vibration such as train passing, and the operation process is safe and reliable.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The operation is simple: the height of the contact wire is accurately controlled by rotating the adjusting bolt, and one person can complete the operation without the cooperation of multiple people.

[0023] Safe and reliable: the recess design of the clamping leg of the support frame increases the friction force to prevent sliding; the flexible connecting piece adopts an "8" winding mode to ensure stable connection and flexible adjustment.

[0024] Strong adaptability: the optimized design of the folding angle of the transmission lever provides the best force arm ratio, and the counterweight structure is adapted to busbars of different heights; various types of electric connection wire clamps are designed to adapt to contact wires of different specifications.

[0025] Light structure: square steel and light connecting pieces are used, the overall weight is light, the operation is convenient, and the operation strength is reduced.

[0026] High efficiency and durability: the length of the threaded section of the adjusting bolt is designed to ensure sufficient adjusting stroke, the bolt head operation part is convenient for tool cooperation, and the elastic anti-skid pad and the anti-skid tooth pattern prolong the service life. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is the overall structure schematic diagram of the rigid-flexible transition device replacement auxiliary device of the utility model;

[0028] Figure 2 is the adjusting mechanism structure schematic diagram of the rigid-flexible transition device replacement auxiliary device of the utility model;

[0029] Figure 3 is the flexible connecting piece and electric connecting line clamp connection structure schematic diagram of the rigid-flexible transition device replacement auxiliary device of the utility model;

[0030] Figure 4 is the transmission lever and rotating shaft connection structure schematic diagram of the rigid-flexible transition device replacement auxiliary device of the utility model;

[0031] Figure 5 is the clamping leg structure schematic diagram of the rigid-flexible transition device replacement auxiliary device of the utility model.

[0032] Among them, the reference signs are:

[0033] Support frame 1, counterweight structure 2, hanging line 3, support rod 4, rotating shaft 5, transmission lever 6, angle structure 7, adjusting bolt 8, fixed clamp 9, clamping bolt 10, fixed ring 11, connecting line 12, electric connecting line clamp 13, clamping leg 14, recess 15, threaded hole 16, fixed bolt 17. DETAILED DESCRIPTION

[0034] The technical solutions of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without making creative labor belong to the protection scope of the utility model.

[0035] As Figures 1-5 shown:

[0036] The working principle of the rigid-flexible transition device replacement auxiliary device product of the utility model is:

[0037] The rigid-flexible transition device replacement auxiliary device of the utility model is based on the lever principle and screw transmission design, and realizes the accurate lifting and positioning of the contact line through the mechanical structure.

[0038] Its working process is as follows: the support frame 1 is stably connected with the vehicle track through the bottom clamping leg 14, forms a fixed fulcrum, rotates the adjusting bolt 8, is used for adjusting the extension distance of the fixed clamp 9, and at the same time, the transmission lever transmits the force to the lifting clamp after amplification with the rotating shaft 5 as the fulcrum, realizes the lifting or lowering of the contact line.

[0039] The folding angle of the transmission lever 6, preferably 150°, and the length ratio help to reduce the manual operation strength; the end of the transmission lever 6 is connected to the counterweight structure 2 through the lifting wire 3, and the weight of the counterweight structure 2 can be adjusted to balance the force on the lever.

[0040] The flexible connecting piece 12 is connected with the electric connecting clamp 13 in an "8" shape winding mode, which not only ensures the connection reliability, but also allows the angle to be adjusted to adapt to different positions of the contact wire; the anti-skid teeth or rubber pad layer of the electric connecting clamp 13 cooperates with the elastic anti-skid pad 16 to reduce the sliding displacement when the device bears the tension of the contact wire;

[0041] The length of the threaded section of the adjusting bolt 8 is 120 mm, the pitch is 3 mm, the head is provided with a hexagonal operation part, the closed end of the U-shaped clamping seat of the fixing clamp 9 is processed with internal threads, and the end of the adjusting bolt 8 is processed with external threads; the opening end width is adapted to the cross section of the busbar, the clamping bolt 10 penetrates the opening end to fix and limit the busbar.

[0042] Example 1: Replacement operation of contact wire in rigid-flexible transition section of subway

[0043] Device assembly and positioning:

[0044] Support frame fixation: align the bottom clamping leg 14 of the support frame 1 with the busbar rail surface, embed the inner side recess 15 of the clamping leg into the rail surface groove, push the device to a position 100 mm away from the terminal head of the busbar, and ensure that the clamping leg is tightly attached to the rail surface.

[0045] Fixing clamp 9 installation: the opening end of the U-shaped clamping seat is sleeved with the side surface of the busbar, the end of the adjusting bolt 8 is screwed into the closed end of the U-shaped clamping seat, and the fixing clamp 9 is locked with the busbar to form a rigid connection.

[0046] Contact wire clamping and tension adjustment:

[0047] Lifting clamp connection: the bolt type wire clamp is selected for the electric connecting clamp 13, the rubber pad layer of the clamping surface is wrapped around the contact wire, and then the bolt is tightened; the galvanized iron wire of the flexible connecting piece 11 is wound around the tail of the wire clamp in an "8" shape for 3 turns, with a reserved adjustment margin of 50 mm.

[0048] Counterweight and adjustment: a 3 kg counterweight structure 2 is hung at the end of the transmission lever 6, and the lever is adjusted to be horizontal through the lifting wire 3; the adjusting bolt 8 is rotated clockwise, and the contact wire is lifted by 3 mm per turn; after 5 turns of adjustment, the distance between the contact wire and the terminal inclined section of the busbar is reduced from 20 mm to 5 mm, which can be monitored by a laser range finder.

[0049] Replacement operation and disassembly:

[0050] The single person pushes the pay-off trolley along the busbar, and it takes 10 minutes to embed the contact wire; after the replacement is completed, the tension is released by rotating the adjusting bolt counterclockwise, the fixing bolt 17 and each component are removed, and the total disassembly time is 5 minutes.

[0051] Embodiment 2: Overhaul of rigid-flexible transition section in high-speed railway tunnel

[0052] In the rigid-flexible transition section of the high-speed railway tunnel, the busbar is T-shaped in cross section, the contact wire tension is 30kN, the operation space is narrow, and the busbar bolt needs to be tightened without interrupting power supply. The traditional method cannot use large equipment due to space limitations.

[0053] Operation steps

[0054] Device adaptation and installation:

[0055] Clamping foot 14 and clamping seat adjustment: replace the U-shaped clamping seat matched with the T-shaped busbar, match the T-shaped rail surface arc of the recessed part 15 of the support frame clamping foot 14 to ensure tight clamping; adjust the height of the rotating shaft 5 to 4.8 meters to adapt to the tunnel clearance.

[0056] High-strength connection: the flexible connecting piece 11 adopts a steel wire rope with a diameter of 5mm, and the electric connecting clamp 13 selects a wedge-shaped clamp with a non-slip tooth pattern depth of 1mm, and the pulling force test after clamping the contact wire is ≥40kN.

[0057] Precise adjustment and locking:

[0058] Counterweight and pre-tightening: hang the 5kg counterweight structure 2 to balance part of the tension, rotate the adjusting bolt 8 clockwise to generate a 5kN upward pulling force on the contact wire, monitor through the pulling force sensor, and offset the sag caused by the self-weight of the busbar; screw in the fixing bolt 17 to lock the rotating shaft 5, and through vibration test, the vibration frequency of the train passing through is usually 50Hz, and the displacement of the contact wire is ≤0.5mm.

[0059] Bolt tightening: use a torque wrench to apply a torque of 40N·m to the busbar bolt, monitor the height of the contact wire through a dial gauge during the process, and the adjusting bolt does not loosen, and the bolt tightening standard rate is 100%.

[0060] Special scene adaptation:

[0061] In the narrow space, the width of the support frame is smaller than that of the traditional hydraulic device, the operation space requirement is reduced, and a single person can complete the device movement and adjustment.

[0062] For those skilled in the art, other different forms of changes or variations can be made on the basis of the above description, and here it is not necessary or impossible to exhaust all the embodiments, and the obvious changes or variations derived therefrom are still within the protection scope of the utility model.

Claims

1. An auxiliary device for replacing a rigid-flexible transition device, characterized in that, These include: The support frame (1) is made of square steel and has multiple clips (14) at its bottom for engaging and fixing with the vehicle track. The transmission lever (6) has a bend structure (7) at its front end and is rotatably mounted between the two support rods (4) at the top of the support frame (1) via a pivot (5). The lifting clamp includes a flexible connector and an electrical connection clamp (13). One end of the flexible connector is connected to the bend structure (7) of the transmission lever (6), and the other end is movably connected to the electrical connection clamp (13). The electrical connection clamp (13) is used to clamp the busbar contact wire. The adjustment mechanism includes an adjustment bolt (8) and a fixing clamp (9). The fixing clamp (9) is used to fix the busbar. One end of the adjustment bolt (8) is connected to the angle structure (7) by a thread, and the other end is connected to the fixing clamp (9). The counterweight structure (2) is connected to the lower end of the transmission lever (6) via a suspension line (3) and is used to adjust the balance of the transmission lever (6).

2. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The angle between the transmission lever (6) and the angled structure (7) is 140°-160°.

3. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The support frame (1) is welded from square steel. The rotating shaft (5) is located in the middle of the two sets of horizontally placed support rods (4) at the top of the support frame (1). The rotating shaft (5) passes through the transmission lever (6) and causes the transmission lever (6) to rotate with the rotating shaft (5) as the fulcrum.

4. The auxiliary device for replacing the rigid-flexible transition device according to claim 3, characterized in that: Both the rotating shaft (5) and the transmission lever (6) are provided with threaded holes (16) below. The threaded holes (16) are equipped with fixing bolts (17). The fixing bolts (17) are connected to the rotating shaft (5) after passing through the threaded holes (16) below the transmission lever (6), thereby locking the transmission lever (6) and the rotating shaft (5) relative to each other.

5. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The flexible connector includes a fixing ring (11) connected to the angled structure (7) and a connecting line (12). The connecting line (12) is a galvanized iron wire or a steel wire rope. The flexible connector and the electrical connection clamp (13) are movably connected by the connecting line (12) using an "8" winding method.

6. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The fixing clamp (9) is a U-shaped card seat structure. The fixing clamp (9) is equipped with a clamping bolt (10). The closed end sleeve of the fixing clamp (9) is connected to the end of the threaded adjusting bolt (8). The clamping bolt (10) passes through the open end of the front end of the fixing clamp (9) to lock the fixing clamp (9) on the busbar.

7. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The thread length of the adjusting bolt (8) is 100-150mm.

8. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The electrical connection clamp (13) is a wedge-shaped clamp or a bolt-shaped clamp, and the clamping surface of the electrical connection clamp (13) is provided with anti-slip teeth or a rubber pad layer.

9. The auxiliary device for replacing the rigid-flexible transition device according to claim 1, characterized in that: The bottom foot (14) of the support frame (1) has an upwardly recessed part (15) on the inner side.

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