Integrated hydraulic self-locking anchor cable tensioning jack

Abstract

The present application relates to tensioning jack technical field, especially to a kind of integrated hydraulic self-locking anchor cable tensioning jack.It includes integrated cylinder, anchor ring and anchor piece, integrated cylinder is provided with hydraulic self-locking control valve, hydraulic self-locking control valve is opened with main oil inlet, anchor head oil inlet and total oil return, integrated cylinder includes outer cylinder, tensioning middle cylinder and inner cylinder core, inner cylinder core is provided with hydraulic linkage clamping assembly, tensioning middle cylinder extends the one end of outer cylinder and is fixedly connected with integrated anchor head, integrated anchor head is provided with hydraulic drive anchor head assembly.The present application is integrally fixed with hydraulic self-locking control valve and integrated cylinder, greatly reduces the space occupied by equipment;Hydraulic drive anchor head assembly replaces traditional structure, cooperates with the linkage of hydraulic linkage clamping assembly, realizes the automation linkage of clamping, anchor head, tensioning action, improves construction efficiency, while hydraulic self-locking structure can continuously and stably keep anchor cable anchoring force, guarantees prestressed construction quality.

Description

Technical Field

[0001] This invention relates to the field of tensioning jacks, and more particularly to an integrated hydraulic self-locking anchor cable tensioning jack. Background Technology

[0002] As a core piece of equipment in prestressed construction engineering, tensioning jacks are widely used in coal mine roadways, highway bridges, railway bridges, hydropower dams, and high-rise buildings. Their anchoring force retention capacity and the level of automation directly affect the quality of the project and the efficiency of construction.

[0003] Existing anchor cable tensioning jacks mostly employ a spring-driven top-anchor structure. Due to spatial constraints, the spring force is prone to attenuation, making it impossible to continuously and stably push the anchor plate to clamp the anchor cable during tensioning deformation, resulting in a low anchoring force retention coefficient. Furthermore, the clamping, top-anchoring, and tensioning actions of traditional equipment have poor coordination, requiring manual assistance for anchor plate installation and positioning, resulting in low automation and a cumbersome construction process. In addition, the traditional jack's cylinder and hydraulic control components are separate, leading to a loose overall structure, occupying a large construction space, and limiting its applicability in confined construction environments. Summary of the Invention

[0004] To overcome the shortcomings of non-compact structure, low degree of automation, and inability to continuously and stably clamp the anchor cable during tensioning, this invention provides an integrated hydraulic self-locking anchor cable tensioning jack.

[0005] The technical solution is as follows: An integrated hydraulic self-locking anchor cable tensioning jack, comprising an integrated cylinder body, an anchor ring, and an anchor plate, characterized in that: the integrated cylinder body is equipped with a hydraulic self-locking control valve, which has a main oil inlet, a top anchor oil inlet, and a total oil return port; the integrated cylinder body includes an outer cylinder, a tensioning cylinder, and an inner cylinder core; the outer cylinder, the tensioning cylinder, and the inner cylinder core are all tubular structures; one end of the outer cylinder is closed; the outer cylinder is sleeved outside the inner cylinder core and the two are fixedly connected; the tensioning cylinder... The inner cylinder core is sleeved outside the outer cylinder core and located inside the outer cylinder. Both the outer cylinder and the inner cylinder core are slidably connected to the tensioning cylinder. A hydraulic linkage clamping assembly is provided on the side of the inner cylinder core away from the closed end of the outer cylinder. An integrated top anchor head is fixedly connected to one end of the tensioning cylinder extending out of the outer cylinder. A hydraulically driven top anchor assembly is provided at the integrated top anchor head. The hydraulically driven top anchor assembly is connected to the top anchor oil inlet of the hydraulic self-locking control valve. The hydraulically connected clamping assembly is linked and cooperates with the hydraulically driven top anchor assembly.

[0006] Furthermore, the hydraulic linkage clamping assembly includes a conical anchor cup, a self-locking tool anchor, an elastic reset member, and a linkage push plate. The conical anchor cup is threadedly connected to one end of the inner cylinder core near the integrated top anchor head. The inner wall of the conical anchor cup has a conical structure. The self-locking tool anchor is slidably connected inside the conical anchor cup. The side of the self-locking tool anchor facing the conical anchor cup is a conical surface that fits with the conical anchor cup. The elastic reset member is slidably connected between the conical anchor cup and the inner cylinder core. The linkage push plate is located on the side of the self-locking tool anchor away from the integrated top anchor head. Both sides of the self-locking tool anchor that contact the linkage push plate have fitting spherical structures. The linkage push plate is fixedly connected to the elastic reset member. The hydraulically driven top anchor assembly can push the self-locking tool anchor to move away from the integrated top anchor head.

[0007] Furthermore, the hydraulically driven top anchor assembly includes a hydraulic top anchor pipe and a linkage piston. The hydraulic top anchor pipe is slidably connected inside the integrated top anchor head. The linkage piston is slidably disposed between the tensioning cylinder and the integrated top anchor head. A hydraulic guide hole is provided inside the tensioning cylinder. One end of the hydraulic guide hole is connected to the top anchor oil inlet, and the other end extends to the linkage piston. The connection between the linkage piston and the tensioning cylinder forms a hydraulic drive chamber. The hydraulic guide hole is connected to the hydraulic drive chamber. One end of the linkage piston abuts against the hydraulic top anchor pipe, and the other end of the linkage piston is slidably connected to the conical anchor cup. An elastic abutment is slidably connected inside the conical anchor cup. One end of the elastic abutment abuts against the linkage piston, and the other end abuts against the self-locking tool anchor.

[0008] Furthermore, the inner wall of the outer cylinder is provided with a hydraulic return channel along its own length. One end of the hydraulic return channel is connected to the main oil return port, and the other end extends to the sliding fit between the outer cylinder and the tensioning cylinder. A sealing element is provided at the sliding fit between the outer cylinder and the tensioning cylinder to isolate the hydraulic return channel from the tensioning chamber.

[0009] Furthermore, a positioning component is provided on the side of the integrated top anchor head facing the anchor ring. The positioning component includes an elastic clip, which is slidably connected to the integrated top anchor head. The anchor ring is provided with a positioning slot adapted to the elastic clip. The integrated top anchor head is rotatably connected to an unlocking ring. The elastic clip is slidably connected to a limit rod, which is slidably connected to the integrated top anchor head. The unlocking ring is provided with a spiral limit groove adapted to the limit rod.

[0010] Furthermore, the self-locking tool anchor is composed of multiple arc-shaped anchor claws, which are evenly distributed around the circumference of the conical anchor cup. The inner side of the arc-shaped anchor claws is provided with anti-slip teeth, which extend along the length of the arc-shaped anchor claws.

[0011] Furthermore, the hydraulic self-locking control valve has an integrated valve block structure, and the hydraulic self-locking control valve is internally equipped with a one-way pressure holding valve and a flow diverter valve. The one-way pressure holding valve is located on the connecting pipeline between the main oil inlet and the tensioning chamber, and the flow diverter valve is located on the connecting pipeline between the main oil inlet and the top anchor oil inlet, so as to realize the synchronous flow diversion control of tensioning hydraulic and top anchor hydraulic.

[0012] Furthermore, an annular pushing surface is provided at one end of the hydraulic jacking anchor pipe near the anchor piece, the annular pushing surface being adapted to the end face of the anchor piece, and a guide sleeve is provided between the outer wall of the hydraulic jacking anchor pipe and the inner wall of the integrated jacking anchor head, the guide sleeve being a wear-resistant and self-lubricating structure.

[0013] Compared with the prior art, the present invention has the following advantages: The present invention creates a compact integrated structure by integrally fixing the hydraulic self-locking control valve with the integrated cylinder body, which greatly reduces the space occupied by the equipment; the hydraulically driven top anchor component replaces the traditional structure, and with the linkage of the hydraulic linkage clamping component, the clamping, top anchoring and tensioning actions are automatically linked, reducing manual operation and improving construction efficiency. At the same time, the hydraulic self-locking structure can continuously and stably maintain the anchoring force of the anchor cable, ensuring the quality of prestressed construction.

[0014] By matching the conical surface of the anchor cup with the conical surface of the self-locking tool anchor, and with the arc-shaped anchor claw with anti-slip teeth, a self-locking clamping effect is achieved as the anchor cable is pulled tighter, improving clamping stability and anchoring reliability. Through the precise design of the guide hole and hydraulic drive cavity, the hydraulic power is efficiently transmitted to the top anchor component. The fit between the annular push surface and the guide sleeve ensures that the top anchoring force is applied evenly, avoiding anchor plate skewing, while reducing component friction and improving the service life and smooth operation of the equipment.

[0015] By integrating a one-way pressure-holding valve and a flow-diverting valve through a hydraulic self-locking control valve, the internal flow control of the tensioning and top anchor hydraulics is achieved in the same part, simplifying the pipeline layout. The one-way pressure-holding valve can also achieve hydraulic self-locking pressure holding, eliminating the need for continuous oil supply and solving energy problems. The external cylinder has a built-in hydraulic return channel with seals to achieve orderly return of hydraulic oil and prevent leakage, ensuring the smooth reset of the tensioning cylinder. The anchor ring is quickly and coaxially positioned by the elastic clamp, avoiding uneven tensioning of the anchor cable and further improving the portability and precision of construction. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional cross-sectional view of the hydraulic linkage clamping assembly of the present invention.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the hydraulically driven top anchor assembly of the present invention.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the positioning component of the present invention.

[0021] Component names and serial numbers in the diagram: 1. Integrated cylinder body, 101. Outer cylinder, 102. Tensioning cylinder, 103. Inner cylinder core, 2. Anchor ring, 3. Anchor plate, 4. Hydraulic self-locking control valve, 401. Main oil inlet, 402. Top anchor oil inlet, 403. Main return oil inlet, 5. Hydraulic linkage clamping assembly, 501. Conical anchor cup, 502. Self-locking tool anchor, 503. Elastic reset component, 504. Linkage push plate, 6. Integrated top anchor head, 7. Hydraulic drive top anchor assembly, 701. Hydraulic top anchor pipe, 702. Linkage piston, 703. Hydraulic guide hole, 704. Elastic abutment component, 8. Positioning assembly, 801. Elastic clamp, 802. Unlocking ring, 803. Limit rod. Detailed Implementation

[0022] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] Example 1

[0024] An integrated hydraulic self-locking anchor cable tensioning jack, such as Figure 1-5As shown, the device includes an integrated cylinder body 1, an anchor ring 2, and an anchor plate 3. Its key feature is that the integrated cylinder body 1 is equipped with a hydraulic self-locking control valve 4. The hydraulic self-locking control valve 4 has a main oil inlet 401, a top anchor oil inlet 402, and a total return oil inlet 403. The main oil inlet 401 connects to external high-pressure oil, providing total power for the top anchor and tensioning. The top anchor oil inlet 402 delivers the diverted hydraulic oil to the top anchor oil circuit, driving the top anchor and clamping action. The total return oil inlet 403 centrally recovers the hydraulic oil from each oil circuit, assisting in equipment reset and realizing hydraulic oil circulation. The hydraulic self-locking control valve has a 4-position integrated valve block structure. The self-locking control valve 4 is internally equipped with a one-way pressure holding valve and a flow diverter valve. The one-way pressure holding valve is located on the connecting pipeline between the main oil inlet 401 and the tensioning chamber, and the flow diverter valve is located on the connecting pipeline between the main oil inlet 401 and the top anchor oil inlet 402, realizing synchronous flow diversion control of tensioning hydraulic fluid and top anchor hydraulic fluid. The integrated cylinder body 1 includes an outer cylinder barrel 101, a tensioning cylinder 102, and an inner cylinder core 103. The outer cylinder barrel 101, the tensioning cylinder 102, and the inner cylinder core 103 are all tubular structures. The outer cylinder barrel 101 is a basic fixing component and is equipped with a hydraulic return channel. The tensioning cylinder 102 slides axially to provide tensioning. The system features a built-in hydraulic guide hole; the inner cylinder core 103 is a fixed core body, attached to the clamping assembly, and the three work together to achieve tensioning, anchoring, and resetting. One end of the outer cylinder 101 is closed, and the outer cylinder 101 is sleeved on the outside of the inner cylinder core 103 and the two are fixedly connected. The tensioning cylinder 102 is sleeved on the outside of the inner cylinder core 103 and located inside the outer cylinder 101. Both the outer cylinder 101 and the inner cylinder core 103 are slidably connected to the tensioning cylinder 102. A hydraulic linkage clamping assembly 5 is provided on the side of the inner cylinder core 103 away from the closed end of the outer cylinder core 101. One end of the tensioning cylinder 102 extending out of the outer cylinder 101 is fixedly connected. An integrated top anchor head 6 is connected, and a hydraulically driven top anchor assembly 7 is installed at the integrated top anchor head 6. The hydraulically driven top anchor assembly 7 is connected to the top anchor oil inlet 402 of the hydraulic self-locking control valve 4. The hydraulically connected clamping assembly and the hydraulically driven top anchor assembly 7 work together in a coordinated manner. The hydraulic-hydraulic linkage clamping assembly 5 performs self-locking clamping on the anchor cable and ensures that the anchor cable is stably clamped without slipping during the tensioning process, providing a reliable anchoring foundation for the anchor cable tensioning. The hydraulically driven top anchor assembly 7 receives hydraulic power to push the anchor plate 3 to press the anchor cable, and at the same time, it is linked with the hydraulic linkage clamping assembly 5 to realize the self-locking clamping of the anchor cable in a synchronized manner, laying the foundation for tensioning.

[0025] like Figure 3As shown, the hydraulic linkage clamping assembly 5 includes a conical anchor cup 501, a self-locking tool anchor 502, an elastic reset member 503, and a linkage push plate 504. The conical anchor cup 501 is threadedly connected to the left end of the inner cylinder core 103. The inner wall of the conical anchor cup 501 has a conical structure. The self-locking tool anchor 502 is slidably connected inside the conical anchor cup 501. The self-locking tool anchor 502 is composed of multiple arc-shaped anchor claws, which are evenly distributed around the circumference of the conical anchor cup 501. The inner side of the arc-shaped anchor claws is provided with anti-slip teeth, which extend along the length of the arc-shaped anchor claws. The side of the self-locking tool anchor 502 facing the conical anchor cup 501 is a conical surface that fits with the conical anchor cup 501. Through the fit between the conical surface of the conical anchor cup 501 and the self-locking tool anchor 502, the self-locking tool anchor 502 is tensioned towards the conical anchor cup 501 during tensioning. 1. The internal sliding mechanism and the tightening of the anchor claws create a self-locking effect that tightens as the anchor is pulled, ensuring stable clamping of the anchor cable. The elastic reset component 503 is slidably connected between the conical anchor cup 501 and the inner cylinder core 103. The linkage push plate 504 is located on the right side of the self-locking tool anchor 502. Both sides of the self-locking tool anchor 502 and the linkage push plate 504 that come into contact with each other are fitted spherical structures, which are adapted to the slight sliding and angle fine adjustment of the self-locking tool anchor 502, making the force transmission more uniform and without jamming, and ensuring smooth clamping and unlocking actions. The linkage push plate 504 is fixedly connected to the elastic reset component 503. The hydraulically driven top anchor assembly 7 can push the self-locking tool anchor 502 to the right. Through the fit of the conical and spherical surfaces and the setting of the elastic reset component, the self-locking clamping and smooth unlocking of the anchor cable are realized, providing an anchoring foundation for tensioning, while ensuring the linkage between the clamping action and the top anchor assembly.

[0026] like Figure 4 As shown, the hydraulically driven top anchor assembly 7 includes a hydraulic top anchor pipe 701 and a linkage piston 702. The hydraulic top anchor pipe 701 is slidably connected to the integrated top anchor head 6. The linkage piston 702 is slidably disposed between the tensioning cylinder 102 and the integrated top anchor head 6. A hydraulic guide hole 703 is provided inside the tensioning cylinder 102. One end of the hydraulic guide hole 703 communicates with the top anchor oil inlet 402, and the other end extends to the linkage piston 702. The connection between the linkage piston 702 and the tensioning cylinder 102 forms a hydraulic drive chamber. The hydraulic guide hole 703... 3. The hydraulic drive chamber is connected. One end of the linkage piston 702 abuts against the hydraulic top anchor pipe 701, and the other end of the linkage piston 702 is slidably connected to the conical anchor cup 501. An elastic abutment 704 is slidably connected inside the conical anchor cup 501. One end of the elastic abutment 704 abuts against the linkage piston 702, and the other end abuts against the self-locking tool anchor 502. The linkage piston links the hydraulic top anchor pipe and the self-locking tool anchor, and the anchor plate is pressed and the anchor cable is self-locked and clamped simultaneously. This provides specific structural support for the linkage of the top anchor and the clamping, and ensures accurate power transmission.

[0027] like Figure 2As shown, the inner wall of the outer cylinder 101 is provided with a hydraulic return channel along its length. One end of the hydraulic return channel is connected to the main oil return port 403, and the other end extends to the sliding fit between the outer cylinder 101 and the tensioning cylinder 102. A seal is provided at the sliding fit between the outer cylinder 101 and the tensioning cylinder 102. The seal isolates the hydraulic return channel from the tensioning chamber. By setting up the hydraulic return channel and the seal in the outer cylinder 101, a return path for the hydraulic oil in the tensioning chamber is established, realizing the orderly recovery of hydraulic oil after tensioning. At the same time, the seal isolates the return channel from the tensioning chamber, ensuring the pressure-holding seal and pushing the tensioning cylinder to return smoothly.

[0028] like Figure 5 As shown, a positioning component 8 is provided on the side of the integrated top anchor head 6 facing the anchor ring 2. The positioning component 8 includes an elastic clip 801, which is slidably connected to the integrated top anchor head 6. The anchor ring 2 is provided with a positioning slot adapted to the elastic clip 801. The integrated top anchor head 6 is rotatably connected to an unlocking ring 802. The elastic clip 801 is slidably connected to a limiting rod 803, which is slidably connected to the integrated top anchor head 6. The unlocking ring 802 is provided with a spiral limiting groove adapted to the limiting rod 803. Rapid coaxial positioning is achieved through the adaptation of the elastic clip 801 to the slot of the anchor ring 2. The system features an unlocking ring 802 and a spiral limiting groove for easy unlocking, preventing uneven tensioning of the anchor cable and improving construction accuracy and ease of operation. The hydraulic jacking anchor pipe 701 has an annular jacking surface near the anchor plate 3, which matches the end face of the anchor plate 3. A guide sleeve is provided between the outer wall of the hydraulic jacking anchor pipe 701 and the inner wall of the integrated jacking anchor head 6. This guide sleeve has a wear-resistant, self-lubricating structure, ensuring that the jacking force is evenly applied to the end face of the anchor plate 3, preventing uneven loading. The self-lubricating guide sleeve reduces sliding friction of the hydraulic jacking anchor pipe 701, improving equipment smoothness and service life, and ensuring precise and stable jacking action.

[0029] When using this jack to tension the anchor cable, first, the anchor cable is positioned and connected. One end of the anchor cable is inserted into the gap between the anchor ring 2 and the anchor plate 3. The cylinder is moved so that the positioning component 8 of the integrated top anchor head 6 is inserted into the positioning slot of the anchor ring 2. The elastic clip 801 engages to achieve coaxial positioning. At this time, the annular pushing surface of the hydraulic top anchor pipe 701 is aligned with the end face of the anchor plate 3. The other end of the anchor cable passes through the top anchor head, the hydraulically driven top anchor component 7, etc., and extends into the inner cylinder core 103.

[0030] After the anchor cable extends into the inner cylinder core 103, the main oil inlet 401 is opened, and the hydraulic oil is diverted through the diversion valve. One path flows into the hydraulic drive chamber through the top anchor oil inlet 402 and the hydraulic guide hole 703 of the tensioning cylinder 102, pushing the linkage piston 702 to move towards the top anchor head. One end of the piston pushes the hydraulic top anchor pipe 701 to press the anchor plate 3, so that the anchor plate 3 is tightly attached to the anchor cable. At the same time, the linkage piston 702 moves to drive the elastic abutment 704 to release the limit on the self-locking tool anchor 502. The elastic reset key pushes the linkage push plate 504, causing the self-locking tool anchor 502 to retract in the conical anchor cup 501. The arc-shaped anchor claw anti-slip teeth engage with the anchor cable, completing the self-locking clamping.

[0031] After the anchor cable is self-locked, oil is continuously injected through the main oil inlet 401. The hydraulic oil enters the tensioning chamber where the outer cylinder 101 and the tensioning cylinder 102 are connected. The increased pressure pushes the tensioning cylinder 102 to slide outward along the inner cylinder core 103. Because the anchor cable is self-locked and the top anchor head and anchor ring 2 are fixed, the sliding of the tensioning cylinder 102 increases the distance between the clamping assembly and the anchor ring 2, applying tension force to the anchor cable until the preset construction value is reached.

[0032] After the anchor cable tension reaches the preset construction value, the main oil inlet 401 and the top anchor oil inlet 402 are closed. The one-way pressure holding valve in the hydraulic self-locking control valve 4 is closed, sealing the hydraulic oil in the tensioning chamber and the hydraulic drive chamber, realizing hydraulic self-locking pressure holding, so that the two chambers maintain a constant pressure, allowing the anchor plate 3 and the self-locking tool anchor 502 to continuously and stably clamp the anchor cable, and the anchoring force can be maintained for a long time without continuous oil supply.

[0033] After construction is completed, the main return port 403 is opened, and the hydraulic oil in the tensioning chamber flows back through the hydraulic return channel of the outer cylinder 101. The tensioning cylinder 102 resets under the action of gravity and hydraulic return. The hydraulic oil in the hydraulic drive chamber flows back through the guide hole and the top anchor inlet 402 under the action of the spring. The reduction of hydraulic oil drives the linkage piston 702 to move in the opposite direction, pushing the self-locking tool anchor 502 to open and release the clamp. The anchor plate 3 resets under the elastic restoring force of the anchor cable, and the equipment returns to its initial state, ready for the next operation.

[0034] The above embodiments are provided for those skilled in the art to implement or use the present invention. Those skilled in the art can make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope that conforms to the innovative features mentioned in the claims.

Claims

1. An integrated hydraulic self-locking anchor cable tensioning jack, characterized in that, The integrated cylinder body (1), anchor ring (2), and anchor plate (3) are characterized in that: the integrated cylinder body (1) is provided with a hydraulic self-locking control valve (4), the hydraulic self-locking control valve (4) has a main oil inlet (401), a top anchor oil inlet (402), and a total oil return port (403), the integrated cylinder body (1) includes an outer cylinder (101), a tensioning cylinder (102), and an inner cylinder core (103), the outer cylinder (101), the tensioning cylinder (102), and the inner cylinder core (103) are all tubular structures, one end of the outer cylinder (101) is closed, the outer cylinder (101) is sleeved on the outside of the inner cylinder core (103) and the two are fixedly connected, the tensioning cylinder (102) is sleeved on the outside of the inner cylinder core (103), and the tensioning cylinder (102) is sleeved on the inner cylinder core (103). The inner cylinder core (103) is located outside the outer cylinder (101) and inside the outer cylinder (101). Both the outer cylinder (101) and the inner cylinder core (103) are slidably connected to the tensioning cylinder (102). A hydraulic linkage clamping assembly (5) is provided on the side of the inner cylinder core (103) away from the closed end of the outer cylinder (101). An integrated top anchor head (6) is fixed to one end of the tensioning cylinder (102) extending out of the outer cylinder (101). A hydraulically driven top anchor assembly (7) is provided at the integrated top anchor head (6). The hydraulically driven top anchor assembly (7) is connected to the top anchor oil inlet (402) of the hydraulic self-locking control valve (4). The hydraulically connected clamping assembly is linked and cooperates with the hydraulically driven top anchor assembly (7).

2. The integrated hydraulic self-locking anchor cable tensioning jack as described in claim 1, characterized in that, The hydraulic linkage clamping assembly (5) includes a conical anchor cup (501), a self-locking tool anchor (502), an elastic reset component (503), and a linkage push plate (504). The conical anchor cup (501) is threadedly connected to one end of the inner cylinder core (103) near the integrated top anchor head (6). The inner wall of the conical anchor cup (501) has a conical structure. The self-locking tool anchor (502) is slidably connected inside the conical anchor cup (501). The side of the self-locking tool anchor (502) facing the conical anchor cup (501) is a conical surface that matches the conical anchor cup (501). The elastic reset member (503) is slidably connected between the conical anchor cup (501) and the inner cylinder core (103). The linkage push plate (504) is located on the side of the self-locking tool anchor (502) away from the integrated top anchor head (6). Both sides of the self-locking tool anchor (502) and the linkage push plate (504) that come into contact with each other are fitted spherical structures. The linkage push plate (504) is fixedly connected to the elastic reset member (503). The hydraulically driven top anchor assembly (7) can push the self-locking tool anchor (502) to move away from the integrated top anchor head (6).

3. The integrated hydraulic self-locking anchor cable tensioning jack as described in claim 2, characterized in that, The hydraulically driven top anchor assembly (7) includes a hydraulic top anchor pipe (701) and a linkage piston (702). The hydraulic top anchor pipe (701) is slidably connected to the integrated top anchor head (6). The linkage piston (702) is slidably disposed between the tensioning cylinder (102) and the integrated top anchor head (6). A hydraulic guide hole (703) is provided inside the tensioning cylinder (102). One end of the hydraulic guide hole (703) is connected to the top anchor oil inlet (402), and the other end extends to the linkage piston (702). The connection between the plug (702) and the tensioning cylinder (102) forms a hydraulic drive chamber. The hydraulic guide hole (703) is connected to the hydraulic drive chamber. One end of the linkage piston (702) abuts against the hydraulic top anchor pipe (701). The other end of the linkage piston (702) is slidably connected to the conical anchor cup (501). An elastic abutment (704) is slidably connected inside the conical anchor cup (501). One end of the elastic abutment (704) abuts against the linkage piston (702), and the other end abuts against the self-locking tool anchor (502).

4. The integrated hydraulic self-locking anchor cable tensioning jack as described in claim 3, characterized in that, The inner wall of the outer cylinder (101) is provided with a hydraulic return channel along its length. One end of the hydraulic return channel is connected to the main oil return port (403), and the other end extends to the sliding fit between the outer cylinder (101) and the tensioning cylinder (102). A sealing element is provided at the sliding fit between the outer cylinder (101) and the tensioning cylinder (102), and the sealing element isolates the hydraulic return channel from the tensioning chamber.

5. An integrated hydraulic self-locking anchor cable tensioning jack as described in claim 4, characterized in that, The integrated top anchor head (6) is provided with a positioning component (8) on the side facing the anchor ring (2). The positioning component (8) includes an elastic clip (801). The elastic clip (801) is slidably connected to the integrated top anchor head (6). The anchor ring (2) is provided with a positioning slot that is compatible with the elastic clip (801). The integrated top anchor head (6) is rotatably connected with an unlocking ring (802). The elastic clip (801) is slidably connected with a limiting rod (803). The limiting rod (803) is slidably connected to the integrated top anchor head (6). The unlocking ring (802) is provided with a spiral limiting groove that is compatible with the limiting rod (803).

6. The integrated hydraulic self-locking anchor cable tensioning jack as described in claim 5, characterized in that, The self-locking tool anchor (502) is composed of multiple arc-shaped anchor claws. The multiple arc-shaped anchor claws are evenly distributed around the conical anchor cup (501). The inner side of the arc-shaped anchor claws is provided with anti-slip teeth, which extend along the length direction of the arc-shaped anchor claws.

7. An integrated hydraulic self-locking anchor cable tensioning jack as described in claim 6, characterized in that, The hydraulic self-locking control valve (4) has an integrated valve block structure. The hydraulic self-locking control valve (4) is equipped with a one-way pressure holding valve and a diversion valve. The one-way pressure holding valve is located on the connecting pipeline between the main oil inlet (401) and the tensioning chamber, and the diversion valve is located on the connecting pipeline between the main oil inlet (401) and the top anchor oil inlet (402) to realize the synchronous diversion control of tensioning hydraulic and top anchor hydraulic.

8. The integrated hydraulic self-locking anchor cable tensioning jack as described in claim 7, characterized in that, The hydraulic jacking anchor pipe (701) has an annular jacking surface at one end near the anchor piece (3), which is adapted to the end face of the anchor piece (3). A guide sleeve is provided between the outer wall of the hydraulic jacking anchor pipe (701) and the inner wall of the integrated jacking anchor head (6), and the guide sleeve is a wear-resistant and self-lubricating structure.

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