Wall buffer connecting device for overhauling lifeline in well

Abstract

A wall buffer connecting device for a lifeline in an overhaul well comprises a threading seat and a connecting seat plate, the connecting seat plate is installed on the well wall of the overhaul well through expansion bolts, a shell is arranged on the connecting seat plate, one end of the shell is open, a movable buffer piece is arranged in the shell, and the movable buffer piece is connected with the threading seat. One end of the movable buffer piece extends out of the opening end of the shell and is connected with the connecting base plate. By the adoption of the structure, in the daily maintenance process, looseness between the connecting base plate and the maintenance well wall caused by walking and pulling of personnel can be effectively avoided, and the safety protection effect of the lifeline is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection for maintenance construction of a hydropower station, in particular to a wall buffer connection device for a lifeline in a maintenance well. Background Art

[0002] During the maintenance of the hydraulic gate hoist in a hydropower station, personnel need to go down to the U-shaped maintenance platform in the maintenance well to carry out the corresponding maintenance work. Since the maintenance work is an aerial work, personnel are generally required to wear corresponding protective safety ropes to avoid safety accidents. When personnel move around, the sliding seat on the lifeline usually moves unsmoothly, which causes the steel cable to be pulled. Long-term pulling force will cause the steel cable support seat and the concrete well wall to loosen. Once a fall accident occurs, the lifeline will not be able to play an effective protective role. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a wall buffer connection device for the lifeline in the inspection well, which can effectively prevent the loosening between the connection seat plate and the inspection well wall caused by the pulling of people walking during the daily inspection process, thereby ensuring the safety protection effect of the lifeline.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a wall buffer connection device for the lifeline in the inspection well, including a threading seat and a connecting seat plate, the connecting seat plate is installed on the wall of the inspection well through expansion bolts, and a shell is provided on the connecting seat plate, one end of the shell is open, and a movable buffer is provided in the shell, one end of the movable buffer extends from the open end of the shell and is connected to the connecting seat plate.

[0005] In a preferred embodiment, the movable buffer comprises an end cylinder and a hollow rod. The hollow rod is fixedly arranged on the side wall of the end cylinder. The end cylinder is movably arranged in the shell through a vertical fixed axis. One end of the hollow rod is open away from the end cylinder. A movable rod is arranged in the hollow rod. One end of the movable rod extends out from the end opening of the hollow rod and is connected to the connecting seat plate.

[0006] In a preferred embodiment, the threading seat is used for threading guide of the steel cable, a connecting thread groove is provided on one side of the threading seat, a connecting thread head matching the thread groove is provided on one end of the movable rod, and the connecting thread head and the thread groove are threadedly connected.

[0007] In a preferred embodiment, a semicircular rod located on a horizontal plane is provided in the shell, the semicircular rod is arranged outside the end cylinder and is arranged concentrically with the end cylinder, two symmetrical fixing plates are provided on the semicircular rod, a convex plate is provided on the outer wall of the end cylinder, and the semicircular rod passes through the convex plate;

[0008] The protruding piece is located on the semicircular rod between the two fixing pieces, and horizontal buffer springs are sleeved on both sides of the protruding piece and the semicircular rod between the two fixing pieces.

[0009] In the preferred embodiment, the diameter of the movable rod is smaller than the inner diameter of the hollow rod, a limit plate with the same diameter as the inner diameter of the hollow rod is provided at one end of the movable rod inside the hollow rod, and an axial buffer spring is sleeved on the movable rod between the limit plate and the open end of the hollow rod.

[0010] In a preferred solution, an end cap is provided on the open end of the hollow rod, and the end cap is connected to the end of the hollow rod by threaded fitting.

[0011] The utility model provides a wall buffer connection device for a lifeline in a maintenance well, which has the following beneficial effects by adopting the above structure:

[0012] (1) The end cylinder is provided with a semicircular rod with a horizontal buffer spring, so that when the steel cable is pulled, the threading seat can rotate a certain angle in the pulling direction together with the movable buffer member to achieve the buffering purpose;

[0013] (2) The axial buffer spring can buffer the vertical force received by the steel cable, thereby achieving the purpose of force buffering of the connecting seat plate and preventing loosening between the connecting seat plate and the well wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0015] Figure 1 It is a schematic diagram of the overall top view structure of the utility model.

[0016] In the figure: steel cable 1, threading seat 2, connecting thread groove 3, connecting seat plate 4, expansion bolt 5, shell 6, movable buffer 7, end cylinder 701, hollow rod 702, fixed shaft 8, semicircular rod 9, protruding piece 10, fixed plate 11, horizontal buffer spring 12, movable rod 13, connecting thread head 131, limit plate 14, axial buffer spring 15, end cover 16. DETAILED DESCRIPTION

[0017] like Figure 1 A wall buffer connection device for a lifeline in a maintenance well comprises a threading seat 2 and a connection seat plate 4. The connection seat plate 4 is installed on the wall of the maintenance well through expansion bolts 5. A shell 6 is provided on the connection seat plate 4. One end of the shell 6 is open. A movable buffer 7 is provided in the shell 6. One end of the movable buffer 7 extends out from the open end of the shell 6 and is connected to the connection seat plate 4.

[0018] In a preferred embodiment, the movable buffer member 7 includes an end cylinder 701 and a hollow rod 702. The hollow rod 702 is fixedly arranged on the side wall of the end cylinder 701. The end cylinder 701 is movably arranged in the shell 6 through a vertical fixed axis 8. One end of the hollow rod 702 is open away from the end cylinder 701. A movable rod 13 is arranged in the hollow rod 702. One end of the movable rod 13 extends out from the end opening of the hollow rod 702 and is connected to the connecting seat plate 4.

[0019] In the preferred embodiment, the threading seat 2 is used for threading guidance of the steel cable 1. A connecting thread groove 3 is provided on one side of the threading seat 2. A connecting thread head 131 matching the thread groove 3 is provided on one end of the movable rod 13. The connecting thread head 131 is threadedly connected to the thread groove 3.

[0020] In a preferred embodiment, a semicircular rod 9 located on a horizontal plane is provided in the housing 6, the semicircular rod 9 is arranged outside the end cylinder 701 and is arranged concentrically with the end cylinder 701, two symmetrical fixing plates 11 are provided on the semicircular rod 9, a convex plate 10 is provided on the outer wall of the end cylinder 701, and the semicircular rod 9 passes through the convex plate 10;

[0021] The protruding piece 10 is located on the semicircular rod 9 between the two fixing pieces 11 , and horizontal buffer springs 12 are sleeved on both sides of the protruding piece 10 and the semicircular rod 9 between the two fixing pieces 11 .

[0022] In the preferred embodiment, the diameter of the movable rod 13 is smaller than the inner diameter of the hollow rod 702, and a limit plate 14 with the same diameter as the inner diameter of the hollow rod 702 is provided at one end of the movable rod 13 inside the hollow rod 702, and an axial buffer spring 15 is sleeved on the movable rod 13 between the limit plate 14 and the open end of the hollow rod 702.

[0023] In a preferred embodiment, an end cap 16 is provided on the open end of the hollow rod 702, and the end cap 16 is connected to the end of the hollow rod 702 by threaded engagement.

[0024] The wall buffer connection device for the lifeline in the inspection well disclosed by the present invention is used for supporting the middle node of the double steel cable lifeline:

[0025] Press the device as Figure 1 The method shown is installed on the double steel cable lifeline, and then the adjustment knob 11 is rotated to adjust the expansion state of the cross brace 2, so that the middle node spacing of the double steel cable lifeline is the same as that of the two ends, ensuring the smooth movement of the slide on the lifeline.

[0026] During the above adjustment process, the telescopic joint 14 can realize adaptive telescopic expansion and contraction through the spring, ensuring that the guide wheel 3 clamps the steel cable to achieve a stable connection between the device and the steel cable.

[0027] The wall buffer connection device for the lifeline in the inspection well disclosed by the present invention is installed as follows:

[0028] The connecting seat plate 4 is installed on the wall of the inspection well by means of expansion bolts 5, and then the movable rod 13 and the axial buffer spring 15 are inserted into the hollow rod 702. After that, the end cover 16 is installed on the end of the movable rod 13 by means of threads, and finally the threading seat 2 is installed on the connecting thread head 131 at the end of the movable rod 13.

[0029] When people move and pull the steel cable 1, the steel cable is subjected to tension. At this time, the threading seat and the steel cable move in the direction of the force, and the movable rod 13 moves in the hollow rod 702 and compresses the axial buffer spring 15 to achieve the purpose of buffering the pulling force perpendicular to the direction of the inspection well wall. At the same time, the movable buffer part 7 rotates around the fixed axis 8, and the protrusion 10 compresses the horizontal buffer spring 12 on one side, thereby achieving the purpose of buffering the pulling force parallel to the direction of the inspection well wall.

Claims

1. A wall buffer connection device for a lifeline in a manhole, comprising a threading seat (2) and a connection seat plate (4), characterized in that: The connecting seat plate (4) is mounted on the wall of the inspection well by means of expansion bolts (5); a shell (6) is provided on the connecting seat plate (4); one end of the shell (6) is open; a movable buffer (7) is provided in the shell (6); one end of the movable buffer (7) extends out from the open end of the shell (6) and is connected to the connecting seat plate (4).

2. A wall buffer connection device for a lifeline in a manhole according to claim 1, characterized in that: The movable buffer (7) comprises an end cylinder (701) and a hollow rod (702), wherein the hollow rod (702) is fixedly arranged on the side wall of the end cylinder (701), and the end cylinder (701) is movably arranged in the housing (6) via a vertical fixed shaft (8), and one end of the hollow rod (702) away from the end cylinder (701) is open, and a movable rod (13) is arranged in the hollow rod (702), and one end of the movable rod (13) extends out from the end opening of the hollow rod (702) and is connected to the connecting seat plate (4).

3. A wall buffer connection device for a lifeline in a manhole according to claim 2, characterized in that: The threading seat (2) is used for threading guide of the steel cable (1). A connecting thread groove (3) is provided on one side of the threading seat (2). A connecting thread head (131) matching the thread groove (3) is provided on one end of the movable rod (13). The connecting thread head (131) is threadedly connected to the thread groove (3).

4. A wall buffer connection device for a lifeline in a manhole according to claim 1, characterized in that: A semicircular rod (9) located on a horizontal plane is provided in the shell (6). The semicircular rod (9) is arranged outside the end cylinder (701) and is arranged concentrically with the end cylinder (701). Two symmetrical fixing plates (11) are provided on the semicircular rod (9). A convex plate (10) is provided on the outer wall of the end cylinder (701). The semicircular rod (9) passes through the convex plate (10). The protruding piece (10) is located on the semicircular rod (9) between the two fixing pieces (11), and horizontal buffer springs (12) are sleeved on both sides of the protruding piece (10) and the semicircular rod (9) between the two fixing pieces (11).

5. A wall buffer connection device for a lifeline in a manhole according to claim 2, characterized in that: The diameter of the movable rod (13) is smaller than the inner diameter of the hollow rod (702); a limit plate (14) having a diameter the same as the inner diameter of the hollow rod (702) is provided at one end of the movable rod (13) inside the hollow rod (702); an axial buffer spring (15) is sleeved on the movable rod (13) between the limit plate (14) and the open end of the hollow rod (702).

6. A wall buffer connection device for a lifeline in a manhole according to claim 5, characterized in that: An end cap (16) is provided on the open end of the hollow rod (702), and the end cap (16) is connected to the end of the hollow rod (702) by threaded engagement.

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