Rope winch for well repair

Abstract

A rope winch for well repair relates to the technical field of oilfield well repair vehicles. The rope winch for well repair comprises a winch roller, one side of the winch roller has a concave arc surface, a tensioner is installed at the junction of the concave arc surface and the cylindrical surface of the winch roller, and the tensioner is connected to the winch roller by bolts. The beneficial effect of the utility model is that when installing and disassembling the wire rope, it is only necessary to use a crowbar to press the unlocking rod inward, the unlocking rod pushes the pad to move inward, the clamping sleeve pushes the propulsion sleeve open under the action of its own elasticity, and the clamping sleeve is in a loosened state. After the installation is completed, the pressure of the unlocking rod is released, and the clamping sleeve automatically clamps the wire rope under the action of the compression spring. No professional tools are required, and the installation efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of oilfield workover vehicles, in particular to a hoisting rope winch used for well workover. Background Art

[0002] The conventional method of fixing the wire rope of the hoist winch of the well repair vehicle is to fix the wire rope to the outside of the winch drum wall plate through a fixed pressure plate, bolts and nuts. The disadvantage of using this structure is that when the wire rope needs to be replaced after a certain period of use, it is extremely difficult for the operator to replace it in the field oil field because it has left the environment of the production plant. A special wrench needs to be used, and it is also difficult to loosen the bolts of the pressure plate. Utility Model Content

[0003] In order to solve the problem that it is time-consuming and laborious to install a steel wire rope in the field on a rope winch currently used for a well repair vehicle, the utility model provides a rope winch for well repair.

[0004] The technical solution provided by the utility model is: a rope winch for well repair, comprising a winch roller, one side of the winch roller has a concave arc surface, a tensioner is installed at the junction of the concave arc surface and the cylindrical surface of the winch roller, and the tensioner is connected to the winch roller by bolts;

[0005] The tensioner is composed of an inner half body and an outer half body, which are connected together by bolts. A stepped hole is opened on the left side of the outer half body, wherein the large diameter hole is located on the right side, a clamping sleeve is installed in the large diameter hole, the outer circle of the clamping sleeve is conical, a propulsion sleeve is sleeved on the outer side of the clamping sleeve, the inner hole of the propulsion sleeve is conical, and the conicity of the propulsion sleeve and the clamping sleeve are consistent, a pad is provided on the right side of the propulsion sleeve, a compression spring is installed between the pad and the inner half body, a transverse through hole is processed on the outer half body, an unlocking rod is installed in the through hole, the right side of the unlocking rod is against the pad, and a limit block is provided on the left side of the unlocking rod of the outer half body, and a distance is left between the limit block and the unlocking rod;

[0006] The clamping sleeve is made of elastic steel, a slit evenly distributed in the circumference is opened on the right side of the clamping sleeve toward the left, and the inner hole of the clamping sleeve is processed into a one-way gear ring toward the left direction.

[0007] The left side of the stepped hole of the outer half body is processed with a bell mouth with an enlarged diameter.

[0008] The inner half body is processed with a countersunk hole at the stepped hole position.

[0009] The beneficial effects of the utility model are as follows: by arranging a concave arc surface on the winch drum to install the tensioner, the wire rope is installed along the tangent direction of the cylindrical surface of the winch drum, and the wire rope is not hard-bent during installation, and the strength of the wire rope is not reduced. The tensioner with a separate structure is connected to the winch drum by bolts, which is convenient for maintenance and replacement.

[0010] When installing and removing the wire rope, you only need to use a crowbar to press the unlocking rod inward. The unlocking rod pushes the pad inward, and the clamping sleeve pushes the propulsion sleeve open under its own elasticity. The clamping sleeve is in a loosened state. After the installation is completed, release the pressure of the unlocking rod. The clamping sleeve automatically clamps the wire rope under the action of the compression spring. No professional tools are required, and the installation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Attached Figure 1 It is a structural schematic diagram of the utility model;

[0012] Attached Figure 2 Yes Figure 1 AA section view;

[0013] Attached Figure 3 Yes Figure 2 A magnified view of point B;

[0014] Attached Figure 4 This is a structural diagram of the tensioner in the utility model.

[0015] Attached Figure 5 It is a schematic diagram of the structure of the outer half of the utility model;

[0016] Attached Figure 6 It is a structural schematic diagram of the clamping sleeve in the utility model.

[0017] In the figure, 1-winch roller, 2-tightener, 3-concave arc surface, 4-inner half, 5-outer half, 6-clamping sleeve, 7-propulsion sleeve, 8-pad, 9-compression spring, 10-countersunk hole, 11-unlocking rod, 12-limiting block, 13-step hole, 14-bell mouth, 15-through hole, 16-slit, 17-one-way gear ring. DETAILED DESCRIPTION

[0018] like Figures 1 to 6 As shown, a rope winch for well repair includes a winch drum 1, one side of the winch drum 1 has a concave arc surface 3, a tensioner 2 is installed at the junction of the concave arc surface 3 and the cylindrical surface of the winch drum 1, and the tensioner 2 is connected to the winch drum 1 by bolts;

[0019] The tensioner 2 is composed of an inner half body 4 and an outer half body 5, which are connected together by bolts. A stepped hole 13 is opened on the left side of the outer half body 5, wherein the large diameter hole is located on the right side, and a clamping sleeve 6 is installed in the large diameter hole. The outer circle of the clamping sleeve 6 is conical, and a propulsion sleeve 7 is sleeved on the outer side of the clamping sleeve 6. The inner hole of the propulsion sleeve 7 is conical, and the conicity of the propulsion sleeve 7 and the clamping sleeve 6 are consistent. A pad 8 is provided on the right side of the propulsion sleeve 7, and a compression spring 9 is installed between the pad 8 and the inner half body 4. A transverse through hole 15 is processed on the outer half body 5, and an unlocking rod 11 is installed in the through hole 15. The right side of the unlocking rod 11 is against the pad 8. The outer half body 5 is provided with a limit block 12 on the left side of the unlocking rod 11, and a distance is left between the limit block 12 and the unlocking rod 11.

[0020] The clamping sleeve 6 is made of elastic steel. A circumferentially uniform slit 16 is opened on the right side of the clamping sleeve 6 to the left. The slit 16 opens naturally without external force. The inner hole of the clamping sleeve 6 is processed into a one-way toothed ring 17 in the left direction to increase the clamping force.

[0021] By arranging a concave arc surface 3 on the winch drum 1 to install the tensioner 2, the wire rope is installed along the tangent direction of the cylindrical surface of the winch drum 1. The wire rope will not be hard bent during installation, and the strength of the wire rope will not be reduced. The tensioner 2 with a separate structure is connected to the winch drum 1 by bolts, which is convenient for maintenance and replacement.

[0022] When installing and removing the wire rope, you only need to use a crowbar to insert the gap between the limit block and the unlocking rod, pry the unlocking rod 11 inward, and the unlocking rod 11 pushes the pad 8 to move inward. The clamping sleeve 6 pushes the propulsion sleeve 7 open under its own elasticity, and the clamping sleeve 6 is in a loosened state. At this time, it is very convenient to insert or pull out the wire rope, loosen the unlocking rod 11, and the clamping sleeve 6 automatically clamps the wire rope under the action of the compression spring 9. There is no need to use professional tools, and the installation efficiency is high.

[0023] The left side of the stepped hole 13 of the outer half body 5 is processed with a bell mouth 14 with an enlarged diameter for guiding the steel wire rope to enter.

[0024] The inner half body 4 is provided with a counterbore 10 at the stepped hole 13 for accommodating the inserted wire rope.

Claims

1. A rope winch for well repair, comprising a winch roller (1), characterized in that: A concave arc surface (3) is provided on one side of the winch roller (1), a tensioner (2) is installed at the junction of the concave arc surface (3) and the cylindrical surface of the winch roller (1), and the tensioner (2) is connected to the winch roller (1) by bolts; The tensioner (2) is composed of an inner half body (4) and an outer half body (5), wherein the outer half body (5) and the inner half body (4) are connected together by bolts, a stepped hole (13) is opened on the left side of the outer half body (5), wherein the large diameter hole is located on the right side, a clamping sleeve (6) is installed in the large diameter hole, the outer circle of the clamping sleeve (6) is conical, a propulsion sleeve (7) is sleeved on the outer side of the clamping sleeve (6), the inner hole of the propulsion sleeve (7) is conical, and the cones of the propulsion sleeve (7) and the clamping sleeve (6) are The thrust sleeve (7) has a uniform degree of tension, a backing plate (8) is provided on the right side, a compression spring (9) is installed between the backing plate (8) and the inner half body (4), a transverse through hole (15) is processed on the outer half body (5), an unlocking rod (11) is installed in the through hole (15), the right side of the unlocking rod (11) is against the backing plate (8), and the outer half body (5) is provided with a limit block (12) on the left side of the unlocking rod (11), and a distance is left between the limit block (12) and the unlocking rod (11); The clamping sleeve (6) is made of elastic steel. A slit (16) evenly distributed around the circumference is opened on the right side of the clamping sleeve (6) toward the left. The inner hole of the clamping sleeve (6) is processed into a unidirectional toothed ring (17) toward the left.

2. The rope winch for well repairing according to claim 1, characterized in that: The left side of the stepped hole (13) of the outer half body (5) is processed with a bell mouth (14) with an enlarged diameter.

3. The rope winch for well repairing according to claim 1, characterized in that: The inner half body (4) is processed with a countersunk hole (10) at the position of the stepped hole (13).

Images