Folding guide rail for top drive device

Abstract

The present invention discloses a folding guide rail for a top drive device, which is used for the walking of a top drive drilling trolley and transmitting torque to the derrick counter torque beam. It includes a folding guide rail group formed by hinging several guide rails with the same structure end to end. A protruding torque transmission block is arranged on the side surface of the end of the guide rail, and an assembly groove adapted to the torque transmission block is provided at the top end of the guide rail; a fixed ear seat for a connecting pin shaft is arranged at the hinge joint of two adjacent guide rails, and the guide rail can rotate 180° around the connecting pin shaft; raised trolley tracks are arranged on the front side wall and the rear side wall along the axial length direction of the guide rail. The present invention can make all guide rails in a straight state, the torque transmission block can transmit the torque generated during the operation of the top drive drilling equipment, effectively protects the connecting pin shaft, improves the reliability of the product, reduces the damage of the connecting pin shaft, and prolongs the service life of the guide rail.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and specifically relates to a folding guide rail for a top drive device. Background Art

[0002] In existing top drive drilling equipment, the top drive guide rails are connected by connecting pin shafts. Two connecting pin shafts are used to fix two adjacent sections of guide rails among several guide rails. Each disassembly is time-consuming and laborious, which affects the installation and disassembly man-hours. Moreover, the removed guide rails are scattered and not easy to manage. After long-term use, the pin holes of the guide rails will be deformed or the connecting pin shafts will be deformed, affecting the reliability of the guide rail operation.

[0003] When such a guide rail protection mechanism encounters an accident, such as fatigue failure of the guide rail and fracture, it will cause the guide rail to fall and damage the drilling rig, posing a great safety hazard. Therefore, its safety is not high. Summary of the Invention

[0004] The purpose of the present invention is to provide a folding guide rail for a top drive device to solve the problem of low safety of the existing guide rail connected by a connecting pin shaft.

[0005] To achieve the above purpose, the present invention is realized through the following technical solutions:

[0006] A folding guide rail for a top drive device, which is used for the walking of a top drive drilling trolley and transmitting torque to the derrick counter torque beam. It includes a folding guide rail group formed by several guide rails with the same structure hinged end to end. A protruding torque transmission block is arranged on the side surface of the end of the strip-shaped guide rail, and an assembly groove adapted to the torque transmission block is opened at the top end of the guide rail; fixing lugs for connecting pin shafts are arranged on the opposite bottom or top surfaces at the hinge joints of two adjacent guide rails. The two guide rails connected end to end can rotate 180° around the connecting pin shaft and be in a horizontal state; a cushion block is fixedly installed at the other end of the guide rail on the same side as the fixing lug, and the fixing lug and the cushion block have the same height; raised trolley tracks are arranged on the front side wall and the rear side wall along the axial length direction of the guide rail.

[0007] Preferably, a positioning groove is opened on the back surface of the fixing lug at the end of the guide rail, and a protruding positioning block is arranged on the upper surface of the assembly groove at the front end of the guide rail. The positioning block is adapted to the positioning groove, and a pin hole penetrating the guide rail horizontally is opened at the connection of the positioning block and the positioning groove. When two adjacent guide rails are in a 180° horizontal state, a locking pin is installed in the pin hole for positioning.

[0008] The present invention forms a folding guide rail group by hinging the heads and tails of several guide rails. The adjacent guide rails are connected by connecting pin shafts and can rotate 180° around the connecting pin shafts. When the adjacent guide rails rotate, the torque transmission block at the end of one guide rail gradually inserts into the assembly groove at the front end of the other guide rail. When the two guide rails are on the same 180° straight line, the positioning block coincides with the positioning groove, and then it is fixed by a locking pin, enabling all the guide rails to be in a straight state. The torque transmission block can transmit the torque generated when the top drive drilling equipment works, effectively protecting the connecting pin shaft, improving the reliability of the product, reducing the damage of the connecting pin shaft, and extending the service life of the guide rail.

[0009] During transportation, the present invention can be folded and stored, reducing the occupied area and preventing the loss of components. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of the present invention;

[0011] Figure 2 is Figure 1 a schematic structural diagram of the middle guide rail;

[0012] Figure 3 is a schematic structural diagram of the connection part of adjacent guide rails of the present invention;

[0013] In the figure: 1, connecting pin shaft; 2, assembly groove; 3, torque transmission block; 4, guide rail; 401, fixed ear seat; 402, spacer block; 403, positioning groove; 404, positioning block; 405, pin through hole; 5, guide rail assembly, 6, trolley track. DETAILED DESCRIPTION OF THE INVENTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings.

[0015] As Figures 1 to 3 shown, a folding guide rail for a top drive device is used for the walking of a top drive drilling trolley and transmitting torque to the derrick counter torque beam. It includes a folding guide rail group 5 formed by hinging the heads and tails of several guide rails 4 with the same structure. A protruding torque transmission block 3 is provided on the side surface of the end of the long strip-shaped guide rail 4, and an assembly groove 2 adapted to the torque transmission block 3 is provided at the top end of the guide rail 4. Fixed ear seats 401 for the connecting pin shaft 1 are provided on the opposite bottom or top surfaces at the hinged part of two adjacent guide rails 4. The two guide rails 4 connected end to end can rotate 180° around the connecting pin shaft 1 and be in a horizontal state. A spacer block 402 is fixedly installed at the other end of the guide rail 4 on the same side as the fixed ear seat 401, and the fixed ear seat 401 and the spacer block 402 have the same height. Raised trolley tracks 6 are provided on the front side wall and the rear side wall along the axial length direction of the guide rail 4.

[0016] On the back surface of the fixing lug 401 at the end of the guide rail 4, a positioning groove 403 is provided. On the upper surface of the assembly groove 2 at the front end of the guide rail 4, a protruding positioning block 404 is provided. The positioning block 404 is adapted to the positioning groove 403. A pin hole 405 penetrating the guide rail 4 horizontally is provided at the connection between the positioning block 404 and the positioning groove 403. When two adjacent guide rails 4 are in a 180° horizontal state, a locking pin is installed in the pin hole 405 for positioning.

[0017] In the present invention, several guide rails 4 are hinged end to end to form a folding guide rail group 5. Adjacent guide rails 4 are connected by a connecting pin shaft 1 and can rotate 180° around the connecting pin shaft 1. When the adjacent guide rails 4 rotate, the torque transmission block 4 at the end of one guide rail 4 gradually inserts into the assembly groove 2 at the front end of the other guide rail. When the two guide rails 4 are on the same 180° straight line, the positioning block 404 also coincides with the positioning groove 403, and then it is fixed by a locking pin, so that all the guide rails 4 can be in a straight state; the torque transmission block 3 can transmit the torque generated when the top drive drilling equipment works, effectively protecting the connecting pin shaft 1, improving the reliability of the product, reducing the damage of the connecting pin shaft 1, and prolonging the service life of the guide rail.

Claims

1. A folding guide rail for a top drive device, which is used for the walking of a top drive drilling carriage and transmitting torque to the derrick counter torque beam, and is characterized in that: It includes a folding guide rail group (5) formed by end-to-end hinging of several guide rails (4) with the same structure. A protruding torque transmission block (3) is provided on the side surface at the end of the strip-shaped guide rail (4), and an assembly groove (2) adapted to the torque transmission block (3) is provided at the top end of the guide rail (4); Fixed lugs (401) for connecting pins (1) are provided on the bottom or top surface opposite to the hinge joint of two adjacent guide rails (4). The two guide rails (4) connected end to end can rotate 180° around the connecting pin (1) and be in a horizontal state; A cushion block (402) is fixedly installed at the other end of the guide rail (4) on the same side as the fixed lug (401), and the fixed lug (401) and the cushion block (402) have the same height; Raised trolley tracks (6) are provided on the front side wall and the rear side wall along the axial length direction of the guide rail (4); A positioning groove (403) is provided on the back surface of the fixed lug (401) at the end of the guide rail (4), and a protruding positioning block (404) is provided on the upper surface of the assembly groove (2) at the front end of the guide rail (4). The positioning block (404) is adapted to the positioning groove (403), and a pin through hole (405) penetrating the guide rail (4) horizontally is provided at the connection between the positioning block (404) and the positioning groove (403). When two adjacent guide rails (4) are in a 180° horizontal state, a locking pin is installed in the pin through hole (405) for positioning.

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