Cantilever insulator replacement auxiliary device

Abstract

The utility model relates to a cantilever insulator replacement auxiliary device, which comprises a first connecting section, a second connecting section and a third connecting section, one end of the first connecting section and one end of the third connecting section are provided with sockets, the second connecting section comprises a first sliding rod and a second sliding rod, the first sliding rod is internally provided with a cavity, the second sliding rod is inserted into the cavity, and the second sliding rod is inserted into the cavity. The second sliding rod is in sliding connection with the first sliding rod, connecting ends are arranged at the ends, away from each other, of the first sliding rod and the second sliding rod, the two connecting ends are inserted into the inserting openings of the first connecting section and the third connecting section respectively, and a driving unit is installed on the first sliding rod and used for driving the second sliding rod to move axially.

Description

TECHNICAL FIELD

[0001] The utility model relates to railway contact network maintenance technical field especially is a kind of auxiliary device for replacing wrist arm insulator. BACKGROUND

[0002] Contact network wrist arm is contact network support device, to bear the weight of contact suspension, is the indispensable part in contact network, its structure is composed of flat wrist arm, oblique wrist arm and the connecting component on wrist arm, and wrist arm support is arranged between flat oblique wrist arm, to ensure the stability of wrist arm structure.Wrist arm is connected with support column by rod insulator, to ensure the insulation distance between support column and wrist arm, so that railway train can normally operate.Rod insulator reaches service life after a certain period of railway operation, or insulator is broken down by lightning, or foreign matter falls on insulator, resulting in insufficient creepage distance, causing wrist arm and support column short circuit, causing tripping, causing train to stop operating, unable to normally travel.In this case, emergency rescue needs to be started immediately, and rod insulator replacement is completed in skylight point.

[0003] Traditional wrist arm insulator replacement scheme is fixed on support column by hand-operated hoist at one end, and fixed on load-bearing cable seat position at the other end, and wrist arm has an upward tension by tightening hand-operated hoist, so that wrist arm is unloaded, wrist arm and insulator are separated, wrist arm insulator to be replaced is disassembled and replaced, then hoist is slowly loosened, wrist arm and insulator are reconnected, so as to achieve the purpose of replacing wrist arm insulator.

[0004] Existing wrist arm insulator replacement scheme requires a certain distance between wrist arm base position and column top, if the distance is insufficient, the upward tension of wrist arm is small, wrist arm and insulator cannot be separated, in this case, wrist arm needs to be lifted manually on ladder car, which is not good and time-consuming and laborious, and skylight point is easily delayed.Moreover, in this case, the horizontal pressure between wrist arm and support column sharply rises, which easily causes damage to support column, especially concrete support column, which easily causes concrete to fall off or support column to break, causing more serious accidents.

[0005] Therefore, a wrist arm insulator replacement auxiliary device is needed to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model provides a kind of auxiliary device for replacing wrist arm insulator to solve the technical problems in prior art.

[0007] The utility model discloses a technical scheme that solves the above technical problem is as follows: a wrist arm insulator replacement auxiliary device, including first connecting section, second connecting section, third connecting section, the first connecting section, third connecting section one end all is provided with the spigot, the second connecting section includes first sliding rod, second sliding rod, the inside of first sliding rod is provided with the cavity, second sliding rod inserts in the cavity, second sliding rod with first sliding rod sliding connection, first sliding rod with second sliding rod away from each other one end all is provided with the connecting end, and two connecting ends are inserted respectively in the spigot of first connecting section, third connecting section, drive unit is installed on first sliding rod, and drive unit is used for driving the axial movement of second sliding rod.

[0008] Preferably, the drive unit includes a transmission box mounted on the side of the first sliding rod, a rotating shaft, a first bevel gear, a second bevel gear and a worm are installed in the transmission box, one end of the rotating shaft is inserted into the transmission box, a hand wheel is installed on one end of the rotating shaft, the first bevel gear is installed on the other end of the rotating shaft, the second bevel gear is installed on the worm, the first bevel gear is engaged with the second bevel gear, and a rack is axially arranged on the side of the second sliding rod, and the worm is engaged with the rack.

[0009] Preferably, bearings are installed at both ends of the worm, and the bearings are installed in the transmission box.

[0010] Preferably, the rotating shaft is perpendicular to the worm.

[0011] Preferably, a positioning strip is axially arranged on the inner wall of the first sliding rod, a positioning groove is axially arranged on the side of the second sliding rod, the positioning strip is embedded in the positioning groove, and the positioning strip is slidingly connected with the positioning groove.

[0012] Preferably, a U-shaped clamping seat is fixed to one end of the third connecting section away from the second connecting section.

[0013] Preferably, a support seat is fixed to one end of the first connecting section away from the second connecting section.

[0014] Preferably, a first fixing hole and a second fixing hole are respectively formed in the side of the spigot of the first connecting section and the third connecting section, threaded holes are formed in the sides of the two connecting ends, and the two threaded holes are respectively matched with the second fixing hole and the first fixing hole.

[0015] Preferably, the cross-sectional outer diameters of the first connecting section, the second connecting section and the third connecting section are the same.

[0016] The utility model discloses an advantageous effect is: the utility model discloses through the upward thrust of the bottom of flat wrist arm, and through the rotation hand wheel and the device elongation to push flat wrist arm upward to avoid the operation of manual lifting wrist arm on the ladder car when traditional replacement mode, improve wrist arm insulator replacement work efficiency, operation is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is whole structure schematic diagram of the utility model;

[0018] Figure 2 It is internal structure schematic diagram of second connecting section of the utility model;

[0019] Figure 3 It is Figure 2 the local enlarged view of A in the middle.

[0020] In the drawings, the component list represented by each sign is as follows:

[0021] 1, first connecting section, 2, support seat, 3, first fixed hole, 4, second connecting section, 41, first sliding rod, 42, second sliding rod, 43, connecting end, 44, screw hole, 45, inner chamber, 46, rack, 47, first helical gear, 48, second helical gear, 49, worm, 410, bearing, 411, rotating shaft, 5, transmission box, 6, hand wheel, 7, third connecting section, 8, second fixed hole, 9, U-shaped clamping seat. DETAILED DESCRIPTION

[0022] The principles and characteristics of the utility model are described below in combination with the drawings, and the examples are only used to explain the utility model and not used to limit the scope of the utility model.

[0023] As Figures 1-3 shown, the scheme designs a wrist arm insulator replacement auxiliary device according to the structural characteristics of wrist arm, provides an upward component force through the device at the position of load bearing cable seat, and completes the replacement of insulator in cooperation with hand-operated hoist.

[0024] The device adopts three-section splicing form, including first connecting section 1, second connecting section 4, third connecting section 7, the first section is about three meters and five long, the second section is about two meters and five to four meters long (the maximum length and the minimum length before and after stretching), the third section is about half a meter long, the three sections are stainless steel material. The first connecting section 1 and the third connecting section 7 are provided with a socket at one end. The second connecting section 4 includes a first sliding rod 41 and a second sliding rod 42, the first sliding rod 41 is provided with a cavity 45 inside, the second sliding rod 42 is inserted into the cavity 45, and the second sliding rod 42 is in sliding connection with the first sliding rod 41. The first sliding rod 41 and the second sliding rod 42 are provided with a connecting end 43 at the end away from each other, and the two connecting ends 43 are inserted into the sockets of the first connecting section 1 and the third connecting section 7 respectively. Thus, the first connecting section 1, the second connecting section 4 and the third connecting section 7 are connected into an integral structure. The cross-sectional outer diameter of the first connecting section 1, the second connecting section 4 and the third connecting section 7 is the same. In order to make the connection between the sections more firm, the first fixed hole 3 and the second fixed hole 8 are respectively penetrated through the side of the socket of the first connecting section 1 and the third connecting section 7, the side of the two connecting ends 43 is provided with a threaded hole 44, and the two threaded holes 44 are respectively matched with the second fixed hole 8 and the first fixed hole 3 and one-to-one corresponding. Two bolts are respectively passed through the first fixed hole 3, the second fixed hole 8 and the corresponding threaded hole 44 to realize the stability of the connection part and prevent the connection part from falling off. The end of the third connecting section 7 away from the second connecting section 4 is welded with a U-shaped clamping seat 9, and the U-shaped clamping seat 9 is used to support the flat wrist arm. When supporting, the flat wrist arm is located inside the U-shaped clamping seat 9 to prevent sliding off. The end of the first connecting section 1 away from the second connecting section 4 is fixed with a support seat 2.

[0025] A driving unit is mounted on the first sliding rod 41, and the driving unit is used to drive the second sliding rod 42 to move axially. The driving unit comprises a transmission box 5 fixedly mounted on the side of the first sliding rod 41, and a rotating shaft 411, a first bevel gear 47, a second bevel gear 48 and a worm 49 are mounted in the transmission box 5. One end of the rotating shaft 411 is inserted into the transmission box 5, and the other end of the rotating shaft 411 is provided with a hand wheel 6, and the first bevel gear 47 is mounted on the rotating shaft 411 and away from the hand wheel 6. The second bevel gear 48 is fixedly mounted on the worm 49, the first bevel gear 47 is engaged with the second bevel gear 48, the side of the second sliding rod 42 is axially provided with a rack 46, and the worm 49 is engaged with the rack 46. Both ends of the worm 49 are provided with bearings 410, the bearings 410 are mounted in the transmission box 5, and the rotating shaft 411 is perpendicular to the worm 49. When the hand wheel 6 is rotated, the rotating shaft 411 is rotated, so that the first bevel gear 47 and the second bevel gear 48 are rotated, and then the worm 49 is rotated, the worm 49 and the rack 46 interact to push the rack 46 and the second sliding rod 42 to move axially, so that the second sliding rod 42 is extended and retracted. In order to prevent the second sliding rod 42 from rotating radially relative to the first sliding rod 41, a positioning strip is axially arranged on the inner wall of the first sliding rod 41, and a positioning groove is axially arranged on the side of the second sliding rod 42, the positioning strip is embedded in the positioning groove, and the positioning strip and the positioning groove are in sliding connection.

[0026] Working principle: before the replacement of the wrist arm insulator, the device is transported to the position to be replaced, and the assembly is completed on the ground. Then install the hand-operated hoist (market-purchased manual lifting device), one end of the hand-operated hoist is fixed on the support, and the other end is fixed on the load-bearing cable seat position. The ground personnel and the personnel on the ladder car cooperate to make the device vertical, the U-shaped clamping seat 9 is opposite to the load-bearing cable seat position of the flat wrist arm pipe, the ground personnel shakes the hand wheel 6, so that the second sliding rod 42 is extended, the device is elongated, and the U-shaped clamping seat 9 is in contact with the flat wrist arm pipe. The personnel operating the hand-operated hoist on the ladder car and the ground personnel cooperate with each other, and simultaneously apply force to the wrist arm (the hand-operated hoist provides upward pulling force, and the device provides upward pushing force), so that the wrist arm is unloaded, the wrist arm and the insulator are separated, then the wrist arm insulator to be replaced is disassembled for replacement, then the hand-operated hoist is slowly loosened, and the ground personnel shakes the U-shaped clamping seat 9 to make the device unloaded and separated from the wrist arm, the wrist arm and the insulator are reconnected, and the replacement of the wrist arm insulator is completed. The personnel on the ladder car and the ground personnel cooperate to slowly lay the device on the ground, the ground personnel disassembles the device into three sections for transportation and carrying, and then moves to the outside of the line.

[0027] The above describes one embodiment of the present application in detail, but the content described is only a preferred embodiment of the present application, and cannot be considered as limiting the implementation range of the present application. Any equivalent changes and improvements made according to the application range of the present application should still belong to the patent coverage range of the present application.

Claims

1. An auxiliary device for replacing a cantilever insulator, characterized in that: The device includes a first connecting segment (1), a second connecting segment (4), and a third connecting segment (7). One end of the first connecting segment (1) and the third connecting segment (7) is provided with a socket. The second connecting segment (4) includes a first sliding rod (41) and a second sliding rod (42). The first sliding rod (41) has a cavity (45) inside. The second sliding rod (42) is inserted into the cavity (45) and is slidably connected to the first sliding rod (41). The ends of the first sliding rod (41) and the second sliding rod (42) that are far apart from each other are provided with a connecting end (43). The two connecting ends (43) are respectively inserted into the sockets of the first connecting segment (1) and the third connecting segment (7). A driving unit is installed on the first sliding rod (41). The driving unit is used to drive the second sliding rod (42) to move axially.

2. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The drive unit includes a transmission box (5) installed on the side of the first sliding rod (41). The transmission box (5) contains a rotating shaft (411), a first helical gear (47), a second helical gear (48), and a worm gear (49). One end of the rotating shaft (411) is inserted into the transmission box (5), and a hand crank (6) is installed on one end of the rotating shaft (411). The first helical gear (47) is installed on the other end of the rotating shaft (411), and the second helical gear (48) is installed on the worm gear (49). The first helical gear (47) meshes with the second helical gear (48). A rack (46) is axially arranged on the side of the second sliding rod (42), and the worm gear (49) meshes with the rack (46).

3. The auxiliary device for replacing the cantilever insulator according to claim 2, characterized in that: Bearings (410) are installed at both ends of the worm (49), and the bearings (410) are installed inside the transmission box (5).

4. The auxiliary device for replacing the cantilever insulator according to claim 3, characterized in that: The rotating shaft (411) is perpendicular to the worm (49).

5. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The first sliding rod (41) has a positioning strip axially arranged on its inner wall, and the second sliding rod (42) has a positioning groove axially arranged on its side. The positioning strip is embedded in the positioning groove and is slidably connected to the positioning groove.

6. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The third connecting segment (7) is fixed with a U-shaped card holder (9) at the end away from the second connecting segment (4).

7. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The first connecting segment (1) is fixed with a support base (2) at the end away from the second connecting segment (4).

8. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The first connecting segment (1) and the third connecting segment (7) have a first fixing hole (3) and a second fixing hole (8) respectively through their socket sides. The two connecting ends (43) are provided with threaded holes (44) on their sides. The two threaded holes (44) are respectively adapted to the second fixing hole (8) and the first fixing hole (3).

9. The auxiliary device for replacing the cantilever insulator according to claim 1, characterized in that: The first connecting segment (1), the second connecting segment (4), and the third connecting segment (7) have the same cross-sectional outer diameter.

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