Anti-falling chain for high-pressure oil pipe

Abstract

The anti-falling chain comprises two hoops and a steel wire rope, each hoop comprises a C-shaped hoop sleeve, pin shafts and a radial bolt, each hoop sleeve is made of an aluminum alloy belt, the aluminum alloy belts are reversely bent at the positions of the two pin shafts to form installation openings of the pin shafts, the two ends of each aluminum alloy belt are buckled through L-shaped openings, and the two ends of each aluminum alloy belt are connected with the steel wire rope in a sleeved mode. A plurality of turnbuckles distributed in the length direction of the aluminum alloy belt are arranged in the middle of the aluminum alloy belt, a wear-resisting sleeve is arranged on the outer side of the hoop sleeve, Y-shaped clamping sleeves are arranged at the positions, close to the two ends of the steel wire rope, of the steel wire rope, and compression bolts are arranged at the positions, close to forking openings, of the Y-shaped clamping sleeves. The threaded surface of the compression bolt is in frictional contact with the rope surface part, located in the Y-shaped clamping sleeve, of the steel wire rope, a positioning hole is formed in one side of the Y-shaped clamping sleeve, and a positioning column used for being matched with the positioning hole is arranged on the rope surface of the steel wire rope. The connection structure is reasonable in design, good in connection reliability, high in repeated utilization rate, high in safety and suitable for large-scale popularization.

Description

Technical Field

[0001] The utility model belongs to the field of anti - chain - detachment, and particularly relates to an anti - chain - detachment for high - pressure oil pipes. Background Technique

[0002] Quick connectors are used at the soft - connection nodes of high - pressure oil pipes. Due to the pressure existing between the high - pressure oil pipe and the equipment it is connected to, there may be a tendency for the pipe to become detached. Therefore, anti - chain - detachments are generally installed on the quick connectors at both ends or on the pipe body of the oil pipe. After the oil pipe and the fuel tank or oil pump produce a separation action, the anti - chain - detachment can effectively control the movement range of the oil pipe and prevent the oil pipe from swinging randomly under the action of pressure.

[0003] At present, general anti - chain - detachments use two clamps and a steel wire rope. The two ends of the steel wire rope are tied to the closing nodes of the clamps. There is also a simpler anti - chain - detachment where one end uses a connecting ring and the other end uses a steel wire rope to close and tighten in the opposite direction. For example, an adjustable - length anti - chain - detachment for oil pipes disclosed in the existing patent CN212107433U includes a rope and a connecting plate. One end of the rope passes through the connecting plate, and the rope passing through one end of the connecting plate is fixed by a second fixing block. The other end of the rope is fixed by a first fixing block, and the rope is bent at one end of the first fixing block and then an adjusting mechanism is installed. However, there are still some problems in the actual use of the existing anti - chain - detachments. First, the steel wire rope is generally tightened by a cylindrical ring at the reverse - closing node. Although closing is achieved, there is a certain probability of breakage, which affects the anti - detachment connection effect. Second, for the anti - chain - detachment with a double - clamp structure, most of the clamps use single - layer steel rings, and their reuse rate is relatively low. Especially after experiencing a strong pull during actual use, it is not conducive to ensuring their safety and reliability for multiple uses. Content of the Utility Model

[0004] In view of the technical problems existing in the above - mentioned anti - chain - detachment, the utility model provides an anti - chain - detachment for high - pressure oil pipes with reasonable design, simple structure, good connection reliability, high reuse rate and high safety.

[0005] To achieve the above object, the technical solution adopted by the present utility model is that a chain anti - detachment device for a high - pressure oil pipe provided by the present utility model includes two hoop clamps and a steel wire rope. Each hoop clamp includes a C - shaped hoop sleeve. At the C - shaped opening of the hoop sleeve, there are two pin shafts. Radial holes are provided on the pin shafts, and radial bolts for adjusting the ring opening of the hoop sleeve are arranged in the radial holes. The hoop sleeve is made of an aluminum alloy strip. At both ends of the aluminum alloy strip, there are two L - shaped openings for mutual fastening. The aluminum alloy strip is bent reversely at the positions of the two pin shafts to form mounting openings for the pin shafts, and the two ends of the aluminum alloy strip are buckled. Multiple screw threads distributed along its length direction are arranged in the middle of the aluminum alloy strip. A wear - resistant sleeve distributed along its C - shaped track is arranged on the outer side of the hoop sleeve. Y - shaped ferrules are arranged at positions near both ends of the steel wire rope. The steel wire rope passes through from the bottom of the Y - shaped ferrule and then bends back from above and is threaded into an Ω - shaped track. Compression holes are arranged at positions near the fork openings of the Y - shaped ferrule. Compression bolts are arranged in the compression holes. The threaded surface of the compression bolt is in frictional contact with the rope surface part of the steel wire rope located inside the Y - shaped ferrule. A positioning hole is arranged on one side of the Y - shaped ferrule, and a positioning post for cooperating with the positioning hole is arranged on the rope surface of the steel wire rope.

[0006] Preferably, flattened petals are arranged at the end of the steel wire rope through pressurization, and a buffer spring elastically cooperating with the flattened petals is arranged at the end of the Y - shaped ferrule.

[0007] Preferably, a through - hole is arranged in each of the two forked directions at the top of the Y - shaped ferrule, and two symmetrically distributed through - holes are arranged at the bottom of the Y - shaped ferrule.

[0008] Preferably, the inner wall of the wear - resistant sleeve protrudes towards the direction where the screw threads are located and is provided with a dovetail groove. The dovetail groove is arranged along the length direction of the wear - resistant sleeve and is used to cover the direction where the screw threads are located. An overlapping layer is arranged on the outer side of the wear - resistant sleeve covering the hoop sleeve, and the overlapping layer covers the end of the screw thread.

[0009] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0010] 1. The chain anti - detachment device for a high - pressure oil pipe provided by the present utility model. The double - layer structure hoop sleeve made of an aluminum alloy strip not only has sufficient tensile strength and anti - deformation strength. Using its L - shaped opening and screw threads can further improve the tensile strength of the hoop clamp, thereby improving the reuse rate of the hoop sleeve structure. Using the wear - resistant sleeve can improve the clamping effect between the hoop clamp and the high - pressure oil pipe, which is beneficial to improving the anti - detachment effect of this chain anti - detachment device. Moreover, the design of the steel wire rope using the Y - shaped ferrule, compression bolt and positioning post can reduce the probability of the chain anti - detachment device breaking, and further improve the anti - detachment effect of this chain anti - detachment device. This device is reasonably designed, has good connection reliability, high reuse rate and high safety, and is suitable for large - scale promotion. Brief Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0012] Figure 1 A three-dimensional view of an anti - detachment chain for a high - pressure oil pipe provided for the embodiment;

[0013] Figure 2 An axonometric view of the hoop and wear - resistant sleeve provided for the embodiment;

[0014] Figure 3 A side view of an anti - detachment chain for a high - pressure oil pipe provided for the embodiment;

[0015] Figure 4 A side view of the wear - resistant sleeve provided for the embodiment;

[0016] Figure 5 An axonometric view of the wear - resistant sleeve provided for the embodiment;

[0017] In the above figures: 1, hoop; 11, hoop sleeve; 111, aluminum alloy strip; 112, L - shaped opening; 113, installation opening; 114, screw thread; 12, pin shaft; 13, radial bolt; 2, steel wire rope; 21, positioning column; 22, flattened lobe; 3, wear - resistant sleeve; 31, dovetail groove; 32, overlapping layer; 4, Y - type ferrule; 41, compression bolt; 42, positioning hole; 5, buffer spring. Detailed Embodiments

[0018] In order to more clearly understand the above - mentioned objects, features and advantages of the present utility model, the present utility model will be further described below in conjunction with the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. For the convenience of narration, words such as "upper", "lower", "left", and "right" hereinafter only indicate the same direction as the upper, lower, left, and right directions of the drawings themselves, and do not limit the structure.

[0019] Many specific details are set forth in the following description in order to provide a thorough understanding of the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0020] Embodiment, as Figures 1 to 5As shown in the figure, a chain anti - detachment device for a high - pressure oil pipe provided by the utility model includes two hoop clamps 1 and a steel wire rope 2. The hoop clamp 1 includes a C - shaped sleeve 11. At the C - shaped opening of the sleeve 11, two pin shafts 12 are provided. Radial holes are provided on the pin shafts 12, and radial bolts 13 for adjusting the circular opening of the sleeve 11 are arranged in the radial holes. Among them, the two pin shafts 12 are at both ends of the sleeve 11 and serve as control nodes for the caliber of the sleeve 11. By adjusting the relative distance between the two pin shafts 12 with the radial bolts 13, the purpose of controlling the circular opening of the sleeve 11 can be achieved.

[0021] In order to improve the comprehensive utilization rate of this chain anti - detachment device, the sleeve 11 provided by the utility model is made of an aluminum alloy strip 111. At both ends of the aluminum alloy strip 111, two L - shaped openings 112 for mutual buckling are provided. The aluminum alloy strip 111 is bent reversely at the positions of the two pin shafts 12 to form mounting openings 113 for the pin shafts 12, and the two ends of the aluminum alloy strip 111 are buckled. A plurality of screw buckles 114 are arranged in the middle of the aluminum alloy strip 111 along its length direction. A wear - resistant sleeve 3 is arranged on the outer side of the sleeve 11 along its C - shaped track. At positions near both ends of the steel wire rope 2, a Y - shaped socket 4 is provided. The steel wire rope 2 passes through the bottom of the Y - shaped socket 4 and then bends back from above and passes through to form an Ω - shaped track. At a position near the fork of the Y - shaped socket 4, a pressing hole is provided, and a pressing bolt 41 is arranged in the pressing hole. The threaded surface of the pressing bolt 41 is in frictional contact with the rope surface part of the steel wire rope 2 inside the Y - shaped socket 4. A positioning hole is provided on one side of the Y - shaped socket 4, and a positioning post 21 for cooperating with the positioning hole is arranged on the rope surface of the steel wire rope 2.

[0022] Specifically, the sleeve 11 made of the aluminum alloy strip 111 is a double - layer structure. On the one hand, it not only has sufficient tensile strength and anti - deformation strength. On the other hand, by buckling the L - shaped openings 112 at its ends and using the screw buckles 114 to press the double layers, the tensile strength of the hoop clamp 1 can be further improved, and the probability of the sleeve 11 breaking due to explosion - induced pulling can be reduced, which is beneficial to improving the reuse rate of the structure of the sleeve 11. The wear - resistant sleeve 3 plays a role in increasing friction, which can improve the clamping effect between the hoop clamp 1 and the high - pressure oil pipe, improve the stability of the two hoop clamps 1 at a given position after the chain anti - detachment device is subjected to explosion - induced pulling, reduce the sliding distance of the chain anti - detachment device along the explosion - induced pulling direction, and is beneficial to improving the anti - detachment effect of this chain anti - detachment device. At the same time, for the steel wire rope 2 of the utility model, the Y - shaped socket 4 enables the end of the steel wire rope 2 to form an effective loop structure, and the bent part of the steel wire rope 2 can be squeezed in the Y - shaped socket 4. Moreover, the pressing bolt 41 increases the anti - detachment friction force of the steel wire rope 2. Coupled with the positioning effect of the positioning post 21 and the positioning hole, the probability of the chain anti - detachment device breaking and coming off the buckle can be reduced, and the anti - detachment effect and use safety of this chain anti - detachment device can be further improved.

[0023] In order to improve the performance of preventing the wire rope 2 from popping out at both ends, the end of the wire rope 2 of the present utility model is provided with flattened petals 22 through pressurization. The width of the flattened petals 22 is greater than the diameter of the through-hole of the Y-shaped ferrule 4, and a buffer spring 5 elastically cooperating with the flattened petals 22 is provided at the end of the Y-shaped ferrule 4. The spiral diameter of the buffer spring 5 is also smaller than the width of the flattened petals 22. The wire rope 2 itself has a certain diameter and rigidity after being made of multiple steel wires twisted together. After passing through the Y-shaped ferrule 4, its end is flattened by a pressurizing device. The formed flattened petals 22 can increase the difficulty of breaking free from the end of the Y-shaped ferrule 4, and in the actual use process, the buffer spring 5 provides buffering, jointly with the positioning post 21 and the positioning hole, to ensure the stability and reliability of the wire rope 2 after forming a loop.

[0024] Further, the present utility model provides that a through-hole is respectively provided in each of the two forking directions at the top of the Y-shaped ferrule 4, and two symmetrically distributed through-holes are provided at the bottom of the Y-shaped ferrule 4. The two through-holes at the top thereof have a certain minimum limiting diameter after the wire rope 2 is bent, that is, the formed loop can effectively be sleeved on the radial bolt 13, and the distance between the through-holes at the bottom is smaller, which can cause a certain squeezing effect on the rope surface of the wire rope 2, and in cooperation with the compression bolt 41, a better anti-detachment performance can be obtained.

[0025] In order to improve the frictional mating performance between the wear-resistant sleeve 3 and the high-pressure oil pipe, the inner wall of the wear-resistant sleeve 3 provided by the present utility model protrudes towards the direction where the screw thread 114 is located and is provided with a dovetail groove 31. The dovetail groove 31 is arranged along the length direction of the wear-resistant sleeve 3 and is used to cover the direction where the screw thread 114 is located. The wear-resistant sleeve 3 is provided with an overlapping layer 32 on the outer side of the ferrule 11, and the overlapping layer 32 covers the end of the screw thread 114. In this way, the dovetail groove 31 conceals the protruding part of the screw thread 114, and the parts on both sides of the dovetail groove 31 can compensate for the gap existing between the oil pipe and the ferrule 11 due to the protrusion of the screw thread 114, thereby obtaining a corresponding frictional area to improve the frictional mating performance between the wear-resistant sleeve 3 and the high-pressure oil pipe, and the screw thread 114 will not scratch the oil pipe. The overlapping layer 32 of the wear-resistant sleeve 3 can provide anti-rust protection and anti-loosening protection for the outer end of the screw thread 114, which is beneficial to improving the reliability of the ferrule 11 after the diameter is limited and extending the actual service life of the ferrule 11.

[0026] The above is only the preferred embodiment of the present utility model, and it is not a limitation to the present utility model in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present utility model still fall within the protection scope of the technical solution of the present utility model.

Claims

1. An anti-drop chain for a high-pressure oil pipe, comprising two clamps and a steel wire rope, wherein the clamp comprises a C-shaped clamp sleeve, two pins are arranged at the C-shaped opening of the clamp sleeve, the pins are provided with radial holes, and radial bolts for adjusting the ring opening of the clamp sleeve are arranged in the radial holes, characterized in that: The hoop is made of an aluminum alloy strip, and two L-shaped openings for interlocking are arranged at both ends of the aluminum alloy strip. The aluminum alloy strip is reversely bent at two pin shaft positions to form a mounting opening for the pin shaft and the two ends of the aluminum alloy strip are buckled. A plurality of screw buckles distributed along its length direction are arranged in the middle of the aluminum alloy strip, and a wear-resistant sleeve distributed along its C-shaped track is arranged on the outside of the hoop. The steel wire rope is provided with a Y-shaped ferrule at a position near its two ends, and the steel wire rope is inserted from the bottom of the Y-shaped ferrule and then bent back from the top to form an Ω-shaped track. The Y-shaped ferrule is provided with a clamping hole at a position near its bifurcation, and a clamping bolt is arranged in the clamping hole. The threaded surface of the clamping bolt is in frictional contact with the rope surface portion of the steel wire rope located inside the Y-shaped ferrule. A positioning hole is arranged on one side of the Y-shaped ferrule, and a positioning column for cooperating with the positioning hole is arranged on the rope surface of the steel wire rope.

2. The anti-drop chain for high-pressure oil pipe according to claim 1, characterized in that: The end of the steel wire rope is provided with a flattening flap by applying pressure, and the end of the Y-shaped ferrule is provided with a buffer spring elastically matched with the flattening flap.

3. The anti-drop chain for high-pressure oil pipe according to claim 2, characterized in that: The top of the Y-shaped ferrule is provided with a through opening in each of the two bifurcated directions, and the bottom of the Y-shaped ferrule is provided with two symmetrically distributed through openings.

4. The anti-drop chain for high-pressure oil pipe according to claim 3, characterized in that: The inner wall of the wear-resistant sleeve is convex toward the direction of the turnbuckle and is provided with a dovetail groove. The dovetail groove is arranged along the length direction of the wear-resistant sleeve and is used to cover the direction of the turnbuckle. The wear-resistant sleeve is provided with an overlapping layer on the outside of the hoop, and the overlapping layer covers the end of the turnbuckle.

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