Stress adjusting structure of high-strength and high-toughness anchor cable

Abstract

The utility model discloses a stress adjusting structure of high-strength high-toughness anchor cable belongs to anchor cable installation technical field. A stress adjusting structure of high-strength high-toughness anchor cable, including hydraulic casing, both ends of hydraulic casing all are provided with adjusting sleeve, wherein, the outer surface of adjusting sleeve is provided with the integrated sealing disc, and the outer surface of sealing disc is provided with anchor cable slot, anchor cable slot extends inwards through sealing disc, and one end of anchor cable slot is provided with locking cone sleeve, and locking cone sleeve is connected through the clamping groove with anchor cable slot. To solve the problem that one -way tensioner locks after anchor cable, can not reverse supplement, long -term prestress is insufficient, leads to the problem of rock and soil body displacement out of control, and hydraulic casing adopts two -way tension structure, when the stratum occurs reverse displacement, can pass through the adjusting sleeve of both ends and timely release reverse stress, prevent rock and soil body displacement.

Description

Technical Field

[0001] This utility model relates to the field of anchor cable installation technology, specifically to a stress adjustment structure for a high-strength and high-toughness anchor cable. Background Technology

[0002] The stress adjustment structure of the anchor cable is a key component in the anchor cable support system used to apply, adjust and maintain prestress, which directly affects the reinforcement effect and long-term stability of the anchor cable.

[0003] Existing hydraulic tensioning devices are mostly unidirectional. After the anchor cable is locked, the prestress will gradually decrease due to the slack of the steel strand, the creep of the soil and rock, or changes in the external load. The unidirectional tensioning device cannot reverse the tension, resulting in insufficient prestress over a long period of time, which leads to uncontrolled displacement of the soil and rock. Furthermore, when the stratum undergoes reverse displacement, the unidirectional tensioning device cannot release the reverse stress. Utility Model Content

[0004] The purpose of this invention is to provide a stress adjustment structure for a high-strength and high-toughness anchor cable. The hydraulic sleeve adopts a bidirectional tensioning structure. When the stratum undergoes reverse displacement, the reverse stress can be released in time through the adjusting sleeves at both ends to prevent the displacement of the rock and soil, thus solving the problems in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a stress adjustment structure for a high-strength and high-toughness anchor cable, comprising a hydraulic sleeve, wherein both ends of the hydraulic sleeve are provided with adjusting sleeves, wherein the outer surface of the adjusting sleeve is provided with an integrally formed sealing plate, the outer surface of the sealing plate is provided with an anchor cable through groove, the anchor cable through groove extends inward through the sealing plate, one end of the anchor cable through groove is provided with a locking cone sleeve, the locking cone sleeve and the anchor cable through groove are connected by a slot, the interior of the hydraulic sleeve is provided with an oil cavity, and one side of the surface of the hydraulic sleeve is provided with an oil passage interface, the oil passage interface and the oil cavity are interconnected.

[0006] Through the above technical solution, the hydraulic sleeve adopts a bidirectional tensioning structure. The anchor cable is inserted into the anchor cable groove on the surface of the adjusting sleeve at one end and then exits from the adjusting sleeve at the other end. The anchor cable and the anchor cable groove are locked together by a locking cone sleeve. When the stratum undergoes reverse displacement, the reverse stress can be released in time through the adjusting sleeves at both ends to prevent the soil and rock from shifting.

[0007] Preferably, the adjusting sleeve and the hydraulic sleeve are connected by a telescopic cavity, the inner side of the adjusting sleeve is provided with an integrally formed piston, and the outer side of the telescopic cavity is provided with a limit oil seal, wherein the limit oil seal and the adjusting sleeve are connected by a flange.

[0008] Preferably, the telescopic cavity is provided with an integrally formed piston tube, the piston tube is provided with an oil injection hole, and a central oil passage is provided between the telescopic cavities, the central oil passage and the oil cavity are interconnected.

[0009] Preferably, a dual oil control valve is provided between the piston passage pipes, and the dual oil control valve is connected to the oil injection hole through an internal thread.

[0010] The above technical solution allows for the control of oil flow into the corresponding piston pipes at both ends via a dual control valve.

[0011] Preferably, an internal connecting pipe is provided on both sides of the central oil circuit, and the two ends of the internal connecting pipe extend into the interior of the telescopic cavity.

[0012] Through the above technical solution, the inner connecting pipe 104 can avoid contact between the anchor cable and the internal oil.

[0013] Preferably, the piston tube and the adjusting sleeve are connected by an internal pressure chamber.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. In this utility model, the hydraulic sleeve adopts a bidirectional tensioning structure. The size and type of the adjusting sleeve can be selected according to the number and size of the anchor cables used. The anchor cable is inserted into the anchor cable groove on the surface of one end of the adjusting sleeve and then exits from the adjusting sleeve at the other end. The anchor cable and the anchor cable groove are locked together by a locking cone sleeve. When the stratum undergoes reverse displacement, the reverse stress can be released in time through the adjusting sleeves at both ends to prevent the soil and rock from shifting.

[0016] 2. This utility model can control the oil to enter the piston pipes at both ends through the dual control valve, thereby realizing the arbitrary unidirectional adjustment of the adjusting sleeve or the simultaneous adjustment of both ends. The inner connecting pipe can prevent the anchor cable from contacting the internal oil. Attached Figure Description

[0017] Figure 1 This is the overall front view of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the overall exploded structure of this utility model.

[0020] In the diagram: 1. Hydraulic sleeve; 2. Adjusting sleeve; 3. Locking cone sleeve; 101. Limiting oil seal; 102. Oil circuit interface; 103. Oil chamber; 104. Internal connecting pipe; 105. Telescopic chamber; 1031. Dual control oil valve; 1032. Piston through pipe; 1033. Oil injection hole; 1034. Central oil circuit; 201. Sealing plate; 202. Internal pressure chamber; 203. Piston; 2011. Anchor cable through groove. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] To address the issue of uncontrolled soil and rock displacement caused by the inability to reverse tension after the anchor cable is locked in a unidirectional tensioning device, resulting in insufficient prestress over a long period; please refer to... Figure 1-3 The present invention provides the following solution:

[0023] Reference Figure 1-2 A stress adjustment structure for a high-strength and high-toughness anchor cable includes a hydraulic sleeve 1, with adjusting sleeves 2 at both ends of the hydraulic sleeve 1. The outer surface of the adjusting sleeve 2 is provided with an integrally formed sealing plate 201, and the outer surface of the sealing plate 201 is provided with an anchor cable through groove 2011. The anchor cable through groove 2011 extends inward through the sealing plate 201, and a locking cone sleeve 3 is provided at one end of the anchor cable through groove 2011. The locking cone sleeve 3 is connected to the anchor cable through groove 2011 through a slot. The hydraulic sleeve 1 is provided with an oil cavity 103 inside, and an oil passage interface 102 is provided on one side of the surface of the hydraulic sleeve 1. The oil passage interface 102 and the oil cavity 103 are interconnected.

[0024] In this embodiment, the hydraulic sleeve 1 adopts a bidirectional tensioning structure. The anchor cable is inserted into the anchor cable groove 2011 on the surface of the adjusting sleeve 2 at one end and then out from the adjusting sleeve 2 at the other end. The anchor cable and the anchor cable groove 2011 are locked together by the locking cone sleeve 3. When the stratum undergoes reverse displacement, the reverse stress can be released in time through the adjusting sleeves 2 at both ends to prevent the soil and rock from shifting.

[0025] It should be noted that the size type of the adjusting sleeve 2 can be selected according to the quantity and size of the anchor cables used.

[0026] Reference Figure 1-2 The adjusting sleeve 2 and the hydraulic sleeve 1 are connected by a telescopic cavity 105. An integrally formed piston 203 is provided on the inner side of the adjusting sleeve 2, and a limit oil seal 101 is provided on the outer side of the telescopic cavity 105. The limit oil seal 101 is connected to the adjusting sleeve 2 by a flange. An integrally formed piston pipe 1032 is provided inside the telescopic cavity 105. An oil injection hole 1033 is provided inside the piston pipe 1032. A central oil passage 1034 is provided between the telescopic cavities 105, and the central oil passage 1034 is interconnected with the oil cavity 103.

[0027] In this embodiment, oil is injected into the oil chamber 103 through the oil passage interface 102, and then enters the central oil passage 1034 through the oil chamber 103. After that, the oil is squeezed into the piston tube 1032 through the central oil passage 1034. The oil in the piston tube 1032 pushes the adjusting sleeve 2 outward. Conversely, when the oil is withdrawn, the adjusting sleeve 2 will also retract inward.

[0028] Reference Figure 2-3 A double oil control valve 1031 is provided between the piston passage pipe 1032. The double oil control valve 1031 is connected to the oil injection hole 1033 by an internal thread. An internal connecting pipe 104 is provided on both sides of the central oil passage 1034. The two ends of the internal connecting pipe 104 extend into the interior of the telescopic cavity 105 respectively. The piston passage pipe 1032 and the adjusting sleeve 2 are telescopically connected through the internal pressure cavity 202.

[0029] In this embodiment, the oil can be controlled to enter the piston pipes 1032 at both ends by the dual control oil valve 1031, thereby realizing the arbitrary unidirectional adjustment of the adjusting sleeve 2 or the simultaneous adjustment of both ends. The inner connecting pipe 104 can prevent the anchor cable from contacting the internal oil.

[0030] The working principle is as follows: the anchor cable is inserted into the anchor cable groove 2011 on the surface of the adjusting sleeve 2 at one end, and then out of the adjusting sleeve 2 at the other end. The anchor cable and the anchor cable groove 2011 are locked together by the locking cone sleeve 3. Oil is injected into the oil chamber 103 through the oil passage interface 102, and then enters the central oil passage 1034 through the oil chamber 103. After that, the oil is squeezed into the piston pipe 1032 through the central oil passage 1034. The oil at the piston pipe 1032 pushes the adjusting sleeve 2 outward. Conversely, when the oil is withdrawn, the adjusting sleeve 2 will also contract inward. When the stratum undergoes reverse displacement, the reverse stress can be released in time through the adjusting sleeves 2 at both ends to prevent the soil and rock mass from shifting.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stress adjustment structure for a high-strength, high-toughness anchor cable, characterized in that, The device includes a hydraulic sleeve (1), both ends of which are provided with adjusting sleeves (2). The outer surface of the adjusting sleeve (2) is provided with an integrally formed sealing plate (201). The outer surface of the sealing plate (201) is provided with an anchor cable through groove (2011). The anchor cable through groove (2011) extends inward through the sealing plate (201). One end of the anchor cable through groove (2011) is provided with a locking cone sleeve (3). The locking cone sleeve (3) and the anchor cable through groove (2011) are connected by a slot. The interior of the hydraulic sleeve (1) is provided with an oil cavity (103). One side of the surface of the hydraulic sleeve (1) is provided with an oil circuit interface (102). The oil circuit interface (102) and the oil cavity (103) are interconnected.

2. The stress adjustment structure for a high-strength, high-toughness anchor cable according to claim 1, characterized in that: The adjusting sleeve (2) is connected to the hydraulic sleeve (1) through a telescopic cavity (105). An integrally formed piston (203) is provided on the inner side of the adjusting sleeve (2), and a limit oil seal (101) is provided on the outer side of the telescopic cavity (105). The limit oil seal (101) is connected to the adjusting sleeve (2) through a flange.

3. The stress adjustment structure for a high-strength, high-toughness anchor cable according to claim 2, characterized in that: The telescopic cavity (105) is provided with an integrally formed piston pipe (1032), the piston pipe (1032) is provided with an oil injection hole (1033), and a central oil passage (1034) is provided between the telescopic cavities (105), and the central oil passage (1034) is interconnected with the oil cavity (103).

4. The stress adjustment structure for a high-strength, high-toughness anchor cable according to claim 3, characterized in that: A double oil control valve (1031) is provided between the piston passage pipe (1032), and the double oil control valve (1031) is connected to the oil injection hole (1033) by an internal thread.

5. The stress adjustment structure for a high-strength, high-toughness anchor cable according to claim 4, characterized in that: Both sides of the central oil passage (1034) are provided with internal connecting pipes (104), and the two ends of the internal connecting pipes (104) extend into the interior of the telescopic cavity (105).

6. The stress adjustment structure for a high-strength, high-toughness anchor cable according to claim 4, characterized in that: The piston tube (1032) and the adjusting sleeve (2) are connected by an internal pressure chamber (202).

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