Hydraulic pushing type top anchor head applied to hydraulic lock anchor tensioning jack
The hydraulic push-type top anchor head uses hydraulic oil to drive the movement of the anchor plate, which solves the problems of anchor cable deformation and anchor plate clamping in the prior art, and improves the anchor force holding coefficient and tensioning efficiency.
Patent Information
- Application Number
- CN202510290353.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2025-05-02
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The existing tension jacks are prone to deformation of the anchor cable during the tensioning process of anchor cable, making the anchor piece difficult to continuously clamp and fix, and the operation is time-consuming and labor-intensive, resulting in low anchor force maintenance coefficient and low tension efficiency.
The hydraulic push-type top anchor head is adopted to drive the second insertion rod and anchor plate to move through hydraulic oil, achieving stable clamping of the anchor cable, and ensuring that the anchor plate is always clamped and fixed through the continuous thrust of the hydraulic oil.
The maintenance coefficient of anchoring force is improved, the operating time is reduced, the working efficiency of anchor cable tension is improved, and the time-consuming and labor-intensive operation of manual tools is avoided.
Smart Images
Figure CN119914333A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of tensioning jacks, and in particular to a hydraulic push-type top anchor head used for hydraulic anchor tensioning jacks. Background Art
[0002] A tensioning jack is a jack specially used for tensioning prestressed tendons such as steel strands. It needs to be used in conjunction with a tensioning oil pump. It uses high-pressure oil to provide the power for tensioning and returning to the top. It has the characteristics of high precision, high speed and high efficiency. It is widely used in anchor tensioning operations in engineering construction such as buildings, bridges, subways, and tunnels.
[0003] The existing tensioning jack structure includes an anchor ring, multiple anchor plates and a cylinder. These anchor plates are arranged in order along the circumferential inner wall of the anchor ring and are slidably connected to the anchor ring. The cylinder is equipped with components specifically used for anchor cable fixing. When tensioning the anchor cable, the operation process is as follows: First, the anchor cable is passed through the anchor ring, and then the staff uses a tool to knock the anchor plate into the anchor ring. With the synergistic effect of multiple anchor plates, the anchor cable is firmly clamped. Next, the anchor cable is passed through one end of the anchor ring and then through the cylinder body, while ensuring that one end of the cylinder body is tightly in contact with the anchor ring. After that, the tensioning oil pump is connected, and the cylinder body is driven by the oil pump to move, and the fixing component in the cylinder body completes the fixing of the anchor cable. As the cylinder body continues to stretch, the distance between the fixing component and the anchor ring gradually increases. When the cylinder body stretches to the preset length, the tensioning operation of the anchor cable is completed.
[0004] Afterwards, the cylinder body is reset, the fixing assembly releases the grip on the anchor cable, and the cylinder body can be removed from the anchor cable. Then, the staff again uses tools to pull the anchor plate out of the anchor ring, release the grip of the anchor plate on the anchor cable, and finally remove the anchor ring from the anchor cable.
[0005] With regard to the above-mentioned related technologies, during the process of tensioning the anchor cable, the anchor cable is prone to deformation, which makes it difficult for the anchor plate to continue to clamp and fix the anchor cable. At the same time, in the process of the anchor plate fixing the anchor cable and releasing its clamping and fixing of the anchor cable, the staff are required to manually operate the tools to complete the process. This process is time-consuming and laborious, and thus there are defects such as low anchoring force retention coefficient and low anchor cable tensioning efficiency. Summary of the invention
[0006] In order to improve the anchoring force retention coefficient and improve the working efficiency of anchor cable tensioning, the present application provides a hydraulic push top anchor head used for a hydraulic locking anchor tensioning jack.
[0007] The present application provides a hydraulic push top anchor head for a hydraulic anchor tensioning jack, which adopts the following technical solution: A hydraulic push top anchor head used for a hydraulic locking anchor tensioning jack, suitable for an anchor ring and an anchor plate, comprises a cylinder body, a plurality of anchor plates are arranged in sequence along the circumferential inner wall of the anchor ring, the anchor plate and the anchor ring are slidably connected, one end of the cylinder body is connected to the top anchor head, a first plug rod is fixedly arranged at an end of the top anchor head away from the cylinder body, a first slot is provided on a side of the anchor ring facing the cylinder body, the first plug rod is plugged and adapted to the first slot, a first clamping assembly for clamping and fixing with the anchor ring is provided on the first plug rod, a moving assembly capable of driving the anchor plate to move is provided on the end of the cylinder body close to the top anchor head, a plurality of second plug rods are fixedly arranged on the moving assembly, a second clamping assembly capable of clamping and fixing with the second plug rods is provided at the anchor plate, and the plurality of second plug rods correspond one to one to the anchor plates.
[0008] By adopting the above technical solution, after the anchor cable passes through the anchor ring, the cylinder body is moved so that the anchor cable passes through the cylinder body, and then the cylinder body is moved toward the anchor ring direction, the cylinder body drives the top anchor head to move, and the top anchor head drives the first plug rod to move, the first plug rod is gradually inserted into the first slot, and the first clamping assembly completes the clamping and fixing of the first plug rod and the anchor ring. After the clamping and fixing, the cylinder body and the tensioning oil pump are connected, and the tensioning oil pump conveys hydraulic oil into the cylinder body to cause the cylinder body to extend. During the extension process, the hydraulic oil inside the cylinder body causes the moving assembly to move toward the anchor plate, and the moving assembly drives the second plug rod to move. When the second plug rod moves to the anchor plate, the second clamping assembly completes the connection between the anchor plate and the second plug rod, and then the second plug rod pushes the anchor plate to move toward the inside of the anchor ring. After reaching the set position, the anchor plate completes the clamping of the anchor cable. At the same time, during the tensioning process of the anchor cable, as the hydraulic pressure in the cylinder body continues to rise, the hydraulic oil always exerts a thrust on the moving component, so that the anchor plate can always clamp and fix the anchor cable. After the tensioning of the anchor cable is completed, the cylinder body is reset, driving the moving component to move away from the anchor ring, and the moving component drives the second plug rod to move, and the second plug rod drives the anchor plate to move, so that the anchor plate releases the clamping and fixing of the anchor cable. After the cylinder body returns to its original position, the anchor cable is pulled out of the anchor ring and the cylinder body to complete the tensioning of the anchor cable. In the process of the anchor plate fixing the anchor cable and releasing its clamping and fixing of the anchor cable, there is no need for the staff to manually operate tools to complete it, which saves time, thereby improving the retention coefficient of the anchoring force and improving the working efficiency of the anchor cable tensioning.
[0009] Optionally, the anchor ring is provided with a first slot at one side wall of the first slot, the first slot passes through the outer side wall of the anchor ring, a first movable slot is provided on one side wall of the first plug rod, the first clamping assembly includes a first clamping block and a first spring, the first clamping block is arranged in the first movable slot, the first clamping block and the first plug rod are slidably connected, the first spring is fixed between the first clamping block and the bottom wall of the first movable slot, the side of the first clamping block away from the first spring is set as an inclined surface, the first clamping block and the first slot are clamped and adapted, and the anchor ring is provided with a pushing assembly at the first slot that can push the first clamping block.
[0010] By adopting the above technical solution, in the process of the first plug rod moving toward the first slot, the first plug rod drives the first clamping block to move, the inclined surface of the first clamping block first abuts against the side wall of the first slot, and under the guidance of the side wall of the first slot, the first clamping block moves toward the first moving slot, the first spring is compressed, and after the top anchor head and the anchor ring abut, the first clamping block and the first clamping slot are aligned, the first spring releases the elastic force, and pushes the first clamping block to move upward, and one end of the first clamping block is clamped into the first clamping slot, thereby realizing the clamping and fixing of the first plug rod and the anchor ring, and then realizing the connection between the top anchor head and the anchor ring, so that the first clamping assembly realizes the function of clamping and fixing the first plug rod and the anchor ring.
[0011] Optionally, the pushing assembly includes a push rod and a push plate, one end of the push rod extends into the first slot, the push rod and the anchor ring are slidably connected, one end of the push rod outside the first slot is fixedly connected to the push plate, a second spring is fixed between the push plate and the anchor ring, the second spring is sleeved outside the push rod, and the elastic force of the second spring is smaller than the elastic force of the first spring.
[0012] By adopting the above technical scheme, in the process of the first clamping block moving toward the first clamping slot, the first clamping block first contacts with the push rod and pushes the push rod to move in the direction away from the anchor ring, the push rod drives the push plate to move, the second spring is stretched, and when it is necessary to contact the clamping fixation of the first plug rod and the anchor ring, the push plate is pressed toward the anchor ring, the push plate drives the push rod to move, the push rod pushes the first clamping block to move, so that the first clamping block and the first clamping slot are disengaged, the cylinder body is moved in the direction away from the anchor ring, the cylinder body drives the first plug rod to move, the first plug rod is removed from the first slot, the setting of the second spring makes it difficult for the push rod to disengage from the anchor ring, and the setting of the push rod and the push plate provides convenience for releasing the clamping fixation of the first plug rod and the anchor ring.
[0013] Optionally, a plurality of mounting grooves are provided on the inner wall of the anchor ring, and the anchor plates are slidably connected to the mounting grooves of the anchor ring and correspond one to one, the mounting grooves penetrate through a side wall of the anchor ring facing the top anchor head, and a side wall of the mounting groove away from the top anchor head is arranged as an inclined surface, and the anchor ring is slidably connected to a linkage plate at the mounting groove, the linkage plate is located on the side of the anchor plate facing the top anchor head, a fixing rod is fixedly provided on the side of the anchor plate facing the linkage plate, an end of the fixing rod away from the anchor plate is slidably connected to the linkage plate, and a second clamping assembly is arranged on the linkage plate.
[0014] By adopting the above technical solution, when the second plug rod moves to the linkage plate, the second clamping assembly completes the clamping and fixing of the second plug rod and the linkage plate. In the process that the second plug rod continues to move toward the anchor ring, the second plug rod drives the linkage plate to move through the second clamping assembly, the linkage plate drives the fixing rod to move, the fixing rod drives the anchor plate to move, and under the guidance of the inclined side wall of the mounting groove, the anchor plate moves toward the anchor cable, and at the same time, the anchor plate drives the fixing rod to move toward the anchor cable, thereby clamping and fixing the anchor cable. The setting of the linkage plate and the fixing rod facilitates the connection between the second plug rod and the anchor plate and the movement of the anchor plate toward the anchor cable.
[0015] Optionally, the linkage plate is provided with a second slot, the second plug rod is plugged and adapted into the second slot, a second slot is provided on one side of the second plug rod, a second movable slot is provided on a side wall of the second slot, the second clamping assembly includes a second clamping block and a third spring, the second clamping block is arranged in the second movable slot, the second clamping block and the linkage plate are slidably connected, the second clamping block and the second slot are clamped and adapted, a side of the second clamping block close to the second slot is set as an inclined surface, a side wall of the second movable slot is provided with a first sliding slot along the length direction of the second movable slot, the linkage plate is slidably connected with a slider in the first sliding slot, the slider is fixedly connected to the second clamping block on the side facing the second movable slot, and the third spring is fixedly arranged between the second clamping block and a side wall of the first sliding slot.
[0016] By adopting the above technical solution, in the process of the moving component driving the second plug rod to move toward the anchor plate, the second plug rod is gradually inserted into the second slot, and as the second plug rod moves, the second plug rod first contacts the inclined surface of the second block and pushes the second block to move toward the second moving groove, the second block drives the slider to move, and the third spring is stretched. After the moving component and the linkage plate are abutted, the second block and the second slot are aligned, the third spring contracts, driving the slider to move, the slider drives the second block to move, and one end of the second block moves into the second slot, completing the clamping and fixation of the second plug rod and the linkage plate.
[0017] Optionally, a sliding rod is fixed on the side of the push plate facing the anchor ring, the end of the sliding rod away from the push plate passes through the anchor ring, the sliding rod and the anchor ring are slidably connected, and a second sliding groove is opened on the side of the linkage plate facing the push plate, and the sliding rod and the second sliding groove are plug-fitted.
[0018] By adopting the above technical solution, in the initial state, the end of the sliding rod away from the push plate extends into the second sliding groove, and the linkage plate is locked, so that the anchor plate is not easy to move at will in the placement groove. At the same time, in the process of the anchor cable passing through the anchor ring, the anchor plate is not easy to affect the movement of the anchor cable. In the process of the push plate moving in the direction away from the anchor ring, the push plate drives the sliding rod to move, and the sliding rod moves out of the second sliding groove, thereby releasing the lock on the linkage plate.
[0019] Optionally, the second slide groove is connected to the second movable groove, a push groove is provided on the side of the second clamping block facing the second slide groove, a side of the slide rod away from the push plate is set as an inclined surface, and the push grooves of the slide rod and the push plate are plug-fitted.
[0020] By adopting the above technical scheme, when the sliding rod locks the linkage plate, the end of the sliding rod away from the push plate extends into the push groove of the second clamping block. After the sliding rod releases the lock of the linkage plate, the lock of the second clamping block is also released. In the process of the staff pushing the push plate toward the anchor ring, the inclined surface of the sliding rod extends to the push groove of the second clamping block. Under the guidance and squeezing action of the inclined surface of the sliding rod, the second clamping block moves in the direction away from the second slot, so that the second clamping assembly releases the clamping fixation of the second plug rod, thereby providing convenience for the second clamping assembly to release the clamping fixation of the linkage plate and the second plug rod through the setting of the push groove.
[0021] Optionally, the cylinder body includes an outer cylinder, a middle cylinder and an inner cylinder, the outer cylinder, the middle cylinder and the inner cylinder are all tubular, one end of the outer cylinder is closed, the outer cylinder is sleeved outside the middle cylinder, the middle cylinder and the outer cylinder are slidably connected, the middle cylinder is sleeved outside the inner cylinder, the middle cylinder and the inner cylinder are slidably connected, the top anchor head is fixed to the end of the middle cylinder away from the closed end of the outer cylinder, the inner cylinder and the closed end of the outer cylinder are fixedly connected, and the movable component is arranged at the end of the middle cylinder close to the top anchor head.
[0022] By adopting the above technical solution, after the cylinder body is connected to the tensioning oil pump, the tensioning oil pump transports hydraulic oil into the cylinder body. As the hydraulic pressure inside the cylinder body increases, the hydraulic oil pushes the middle cylinder to move toward the outside of the outer cylinder, and the middle cylinder drives the top anchor head and the moving assembly to move, so that the cylinder body realizes the function of driving the top anchor head and the moving assembly to move.
[0023] Optionally, the moving component includes a top anchor tube and a small piston, both of which are arranged in the middle cylinder, and both of which are slidably connected to the middle cylinder, and the small piston is arranged on the side of the top anchor tube away from the top anchor head, and the second insertion rod is fixedly connected to the side of the top anchor tube away from the small piston, and a guide hole is provided on the side of the middle cylinder away from the top anchor head, and the length direction of the guide hole is parallel to the length direction of the middle cylinder, and the middle cylinder is provided with a chamber at the small piston, and the end of the guide hole close to the top anchor head is connected to the chamber.
[0024] By adopting the above technical solution, in the process of conveying hydraulic oil into the cylinder body, the hydraulic oil in the cylinder body flows into the chamber through the guide hole and is on the side of the small piston away from the top anchor tube. As the hydraulic pressure continues to increase, the hydraulic oil pushes the small piston toward the anchor ring, and the small piston pushes the top anchor tube to move, and the top anchor tube drives the second plug rod to move. After the second plug rod and the linkage plate are clamped and fixed, the linkage plate is pushed to move by the second plug rod, and the linkage plate causes the anchor plate to move, thereby pushing the assembly to realize the function of pushing the anchor plate to move.
[0025] Optionally, a fourth spring is fixedly provided between the top anchor head and the top anchor tube, and the fourth spring is sleeved outside the top anchor tube.
[0026] By adopting the above technical solution, the fourth spring is compressed during the movement of the top anchor tube toward the anchor plate. When the clamping and fixation of the anchor cable is released, as the hydraulic pressure inside the cylinder gradually decreases, the fourth spring releases its elastic force to push the top anchor tube to move, and the top anchor tube drives the second plug rod to move, and the second plug rod drives the linkage plate to move, and the linkage plate drives the anchor plate to move, so that the anchor plate releases the clamping and fixation of the anchor cable. Therefore, the setting of the fourth spring facilitates the anchor plate to release the clamping and fixation of the anchor cable.
[0027] In summary, the present application includes at least one of the following beneficial technical effects: 1. The hydraulic oil pushes the moving assembly to drive the second plug rod to move, and the second plug rod and the anchor plate are connected through the second clamping assembly. The second plug rod drives the anchor plate to move, so that the anchor plate completes the clamping and fixing of the anchor cable. At the same time, as the hydraulic oil is continuously delivered to the cylinder body, the hydraulic pressure in the cylinder body gradually increases. At the same time, the hydraulic oil always exerts a thrust on the moving assembly, so that the anchor plate can always clamp and fix the anchor cable. When the cylinder body is reset, the moving assembly drives the second plug rod to move in the direction away from the anchor ring, and the moving assembly drives the second plug rod to move, and the second plug rod drives the anchor plate to move, and the anchor plate releases the clamping and fixing of the anchor cable, so that the staff does not need to use tools to knock the anchor plate and pull the anchor plate out of the anchor ring, which saves time, thereby improving the retention coefficient of the anchoring force and improving the working efficiency of the anchor cable tensioning; 2. By pressing the push plate, the push plate drives the push rod to move, and the push rod pushes the first clamping block to move, so that the first plug rod is released from the clamping fixation with the anchor ring. Thus, the setting of the push rod and the push plate provides convenience for releasing the clamping fixation of the first plug rod and the anchor ring; 3. By moving one end of the inclined surface of the slide rod into the push slot, the second clamping block is driven to move away from the second slot, so that the second clamping block and the second slot are disengaged, thereby facilitating the release of the clamping fixation of the second plug rod and the linkage plate. BRIEF DESCRIPTION OF THE DRAWINGS
[0028] Figure 1 It is a structural schematic diagram of a hydraulic push top anchor head applied to a hydraulic locking anchor tensioning jack according to an embodiment of the present application; Figure 2 This is a cross-sectional view of the structure of the cylinder body in the embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 It is a structural cross-sectional view of the second clamping assembly in the embodiment of the present application.
[0029] In the figure, 1, cylinder body; 11, outer cylinder; 12, middle cylinder; 121, guide hole; 122, chamber; 123, fourth spring; 13, inner cylinder; 2, anchor ring; 21, anchor plate; 22, first slot; 23, first clamping slot; 24, second spring; 25, placement slot; 26, linkage plate; 261, second slot; 262, second movable slot; 263, first slide slot; 264, slider; 27, fixing rod; 28, slide Rod; 29, second slide groove; 3, top anchor head; 31, first plug rod; 311, first moving groove; 4, first clamping assembly; 41, first clamping block; 42, first spring; 5, moving assembly; 51, top anchor pipe; 52, small piston; 6, second plug rod; 61, second clamping groove; 7, second clamping assembly; 71, second clamping block; 711, push groove; 72, third spring; 8, pushing assembly; 81, push rod; 82, push plate. DETAILED DESCRIPTION
[0030] The following is combined with Figure 1-Figure 4 This application is described in further detail.
[0031] The embodiment of the present application discloses a hydraulic push top anchor head applied to a hydraulic locking anchor tensioning jack.
[0032] refer to Figure 1 A hydraulic push top anchor head used for a hydraulic anchor tensioning jack comprises an anchor ring 2 and a top anchor head 3. The top anchor head 3 is arranged on one side of the anchor ring 2, and the top anchor head 3 and the anchor ring 2 are in contact with each other.
[0033] refer to Figure 1 and Figure 2 A cylinder body 1 is arranged at the top anchor head 3, and the cylinder body 1 comprises an outer cylinder 11, a middle cylinder 12 and an inner cylinder 13. The outer cylinder 11, the middle cylinder 12 and the inner cylinder 13 are all tubular, one end of the outer cylinder 11 is closed, the inner cylinder 13 is arranged in the outer cylinder 11, the length direction of the inner cylinder 13 is parallel to the length direction of the outer cylinder 11, one end of the inner cylinder 13 is fixedly connected to the closed end of the outer cylinder 11, the middle cylinder 12 is sleeved outside the inner cylinder 13 and is in the outer cylinder 11, the middle cylinder 12 is slidably connected to the two, the top anchor head 3 is fixedly connected to the end of the middle cylinder 12 away from the closed end of the outer cylinder 11, and the top anchor head 3 is annular.
[0034] The cylinder body 1 is connected to the tensioning oil pump, which delivers hydraulic oil into the cylinder body 1. The hydraulic oil flows between the closed ends of the middle cylinder 12 and the outer cylinder 11. As the hydraulic pressure in the cylinder body 1 gradually increases, the hydraulic oil pushes the middle cylinder 12 to move away from the outer cylinder 11, and the middle cylinder 12 drives the top anchor head 3 to move.
[0035] refer to Figure 1 , Figure 2 and Figure 3A plurality of first plug rods 31 are fixedly provided on the side of the top anchor head 3 facing away from the middle cylinder 12, and the plurality of first plug rods 31 are arranged in sequence along the circumferential side wall of the top anchor head 3, and the length direction of the first plug rods 31 is parallel to the length direction of the middle cylinder 12, and a plurality of first slots 22 are provided on the side of the anchor ring 2 facing the top anchor head 3, and the first plug rods 31 and the first slots 22 are plug-fitted and correspond one to one, and a first clamping groove 23 is provided on one side wall of the first slot 22 of the anchor ring 2, and the first clamping groove 23 penetrates the outer side wall of the anchor ring 2, and a first movable groove 311 is provided on a side wall of the first plug rod 31 away from one end of the top anchor head 3, and a first clamping component 4 for clamping and fixing the anchor ring 2 is provided at the first movable groove 311.
[0036] The first clamping assembly 4 includes a first clamping block 41 and a first spring 42. The first clamping block 41 is arranged in the first movable groove 311. The first clamping block 41 and the first insertion rod 31 are slidably connected. The first spring 42 is fixed between the first clamping block 41 and the inner bottom wall of the first movable groove 311. The first clamping block 41 and the first clamping groove 23 are plug-fitted and adapted. The side of the first clamping block 41 away from the first spring 42 is set as an inclined surface.
[0037] After the anchor cable passes through the anchor ring 2 and the cylinder body 1, the cylinder body 1 is moved toward the anchor ring 2, and the cylinder body 1 drives the top anchor head 3 to move, and the top anchor head 3 drives the first plug rod 31 to move, and the first plug rod 31 drives the first clamping block 41 to move. In the process of the first plug rod 31 moving toward the first slot 22, the inclined surface of the first clamping block 41 first abuts against the side wall of the first slot 22, and under the guidance of the side wall of the first slot 22, the first clamping block 41 moves toward the first moving groove 311, and the first spring 42 is compressed. After the top anchor head 3 and the anchor ring 2 abut, the first clamping block 41 and the first clamping groove 23 are aligned, and the first spring 42 releases the elastic force, pushing the first clamping block 41 to move toward the first clamping groove 23, and one end of the first clamping block 41 is clamped into the first clamping groove 23, thereby realizing the clamping and fixing of the anchor ring 2 and the first plug rod 31, and then realizing the connection between the top anchor head 3 and the anchor ring 2.
[0038] refer to Figure 1 , Figure 2 and Figure 3 The anchor ring 2 is provided with a pushing assembly 8 at the first slot 23 for pushing the first block 41 toward the first movable slot 311. The pushing assembly 8 includes a push rod 81 and a push plate 82. One end of the push rod 81 is in the first slot 23. The push rod 81 is slidingly connected to the anchor ring 2. One end of the push rod 81 outside the first slot 23 is fixedly connected to the push plate 82. A second spring 24 is fixedly provided between the push plate 82 and the anchor ring 2. The second spring 24 is sleeved outside the push rod 81. The elastic force of the second spring 24 is less than the elastic force of the first spring 42.
[0039] In the process of the first clamping block 41 moving toward the first clamping slot 23, the first clamping block 41 first contacts with the push rod 81 and pushes the push rod 81 to move out of the first clamping slot 23, the push rod 81 drives the push plate 82 to move, and the second spring 24 is stretched. When the clamping fixation between the first plug rod 31 and the anchor ring 2 needs to be released, the push plate 82 is pushed toward the direction of the anchor ring 2, and the push plate 82 drives the push rod 81 to move. The push rod 81 first releases from the first clamping block 41 and pushes the first clamping block 41 to move toward the first moving groove 311, so that the first clamping block 41 and the first clamping slot 23 are disengaged, the clamping fixation between the first plug rod 31 and the anchor ring 2 is released, and convenience is provided for the first plug rod 31 to be moved out of the first slot 22.
[0040] refer to Figure 2 , Figure 3 and Figure 4 A plurality of placement grooves 25 are provided on the inner wall of the anchor ring 2, and the plurality of placement grooves 25 are arranged in sequence along the circumferential inner wall of the anchor ring 2. The placement groove 25 passes through one side wall of the anchor ring 2, and a side wall of the placement groove 25 away from the top anchor head 3 is set as an inclined surface. An anchor sheet 21 is slidably connected in the placement groove 25 of the anchor ring 2, and a side wall of the anchor sheet 21 facing the inclined surface of the placement groove 25 is set as an inclined surface and fits each other. A fixing rod 27 is fixedly provided on the side of the anchor sheet 21 facing the top anchor head 3, and a linkage plate 26 is provided at one end of the fixing rod 27 away from the anchor sheet 21, the fixing rod 27 is slidably connected to the linkage plate 26, and the linkage plate 26 is slidably connected to the anchor ring 2, and a moving component 5 that can drive the linkage plate 26 to move is provided at one end of the middle cylinder 12 close to the top anchor head 3.
[0041] The moving component 5 includes a top anchor tube 51 and a small piston 52, which are both arranged at one end of the middle cylinder 12 close to the top anchor head 3. The top anchor tube 51 and the small piston 52 are both closed-loop shaped, and the small piston 52 is located on the side of the top anchor tube 51 away from the top anchor head 3. The middle cylinder 12 is provided with a chamber 122 at the end of the small piston 52 away from the top anchor tube 51, and a guide hole 121 is provided on the side of the middle cylinder 12 away from the top anchor head 3, and the end of the guide hole 121 close to the top anchor head 3 is connected to the chamber 122, and a plurality of second plug rods 6 are fixedly provided at the end of the top anchor tube 51 away from the small piston 52, and the plurality of second plug rods 6 are arranged in sequence along the circumferential side wall of the top anchor tube 51, and a second slot 261 is provided on the side of the linkage plate 26 away from the fixed plate, and the second plug rod 6 and the second slot 261 are plug-fitted and corresponding to each other, and the linkage plate 26 is provided with a second clamping component 7 for clamping and fixing with the second plug rod 6 at the second slot 261.
[0042] The second plug rod 6 is provided with a second slot 61 at one end away from the top anchor head 3, and the linkage plate 26 is provided with a second movable slot 262 on the side wall of the second slot 261. The second clamping assembly 7 includes a second clamping block 71 and a third spring 72. The second clamping block 71 is arranged in the second movable slot 262. The second clamping block 71 and the linkage plate 26 are slidably connected. The side of the second clamping block 71 close to the second slot 261 is set as an inclined surface. The second clamping block 71 and the second slot 61 are clamped and adapted. The linkage plate 26 is in the second movable slot 262. A first sliding groove 263 is opened on one side wall, and the linkage plate 26 is slidably connected with a slider 264 in the first sliding groove 263. The slider 264 is fixedly connected to the second clamping block 71 on one side facing the second movable groove 262. The third spring 72 is fixedly arranged between the slider 264 and a side wall of the first sliding groove 263. The extension and contraction direction of the third spring 72 is parallel to the moving direction of the second clamping block 71. A fourth spring 123 is fixedly arranged between the top anchor tube 51 and a side wall of the top anchor head 3. The fourth spring 123 is sleeved outside the top anchor tube 51.
[0043] After the top anchor head 3 and the anchor ring 2 are abutted, as the hydraulic oil is continuously transported into the cylinder body 1, the hydraulic oil flows into the chamber 122 through the guide hole 121. As the hydraulic pressure in the chamber 122 gradually increases, the hydraulic oil pushes the small piston 52 to move toward the anchor ring 2. The small piston 52 pushes the top anchor tube 51 to move, and the top anchor tube 51 drives the second plug rod 6 to move. The second plug rod 6 is inserted into the second slot 261, and the fourth spring 123 is compressed. During the movement of the second plug rod 6 in the second slot 261, the second plug rod 6 first abuts against the inclined surface of the second clamping block 71 and pushes the second clamping block 71 to move toward the second moving groove 262. The second clamping block 71 drives the slider 264 to move, and the third spring 72 is stretched. After the top anchor tube 51 and the anchor plate 21 are abutted, the second clamping groove 61 on the second plug rod 6 is aligned with the second clamping block 71, and the third spring 7 2 contracts, driving the slider 264 to move, the slider 264 drives the second clamping block 71 to move, and one end of the second clamping block 71 is clamped into the second clamping groove 61, thereby realizing the clamping and fixing of the second plug rod 6 and the linkage plate 26. As the top anchor tube 51 continues to move, the second plug rod 6 drives the linkage plate 26 to move, the linkage plate 26 drives the fixing rod 27 to move, and the fixing rod 27 drives the anchor plate 21 to move, and the anchor plate 21 realizes the clamping and fixing of the anchor cable. After the anchor cable is tensioned, the hydraulic oil flows back, so that the hydraulic pressure inside the cylinder body 1 is gradually reduced, and the fourth spring 123 releases its elastic force, pushing the top anchor tube 51 to move away from the anchor ring 2, and the top anchor tube 51 drives the second plug rod 6 to move, the second plug rod 6 drives the linkage plate 26 to move, the linkage plate 26 drives the fixing rod 27 to move, and the fixing rod 27 drives the anchor plate 21 to move, so that the anchor plate 21 releases the clamping of the anchor cable.
[0044] refer to Figure 2 , Figure 3 and Figure 4A sliding rod 28 is fixedly provided on the side of the push plate 82 facing the anchor ring 2, and the end of the sliding rod 28 away from the push plate 82 passes through a side wall of the placement groove 25, the sliding rod 28 and the anchor ring 2 are slidably connected, a second sliding groove 29 is provided on one side wall of the linkage plate 26, the second sliding groove 29 is communicated with the second movable groove 262, the sliding rod 28 and the second sliding groove 29 are plugged and adapted, a push groove 711 is provided on the side of the second clamping block 71 facing the second sliding groove 29, the sliding rod 28 and the push groove 711 are plugged and adapted, and the side of the sliding rod 28 away from the push plate 82 is set as an inclined surface.
[0045] When the first insertion rod 31 is not in the first slot 22, the end of the slide rod 28 away from the push plate 82 extends into the push groove 711. At this time, the third spring 72 is in a stretched state. During the process of the first insertion rod 31 and the anchor ring 2 being clamped and fixed, the push rod 81 moves upward, the push rod 81 drives the push plate 82 to move, the second spring 24 is stretched, the push plate 82 drives the slide rod 28 to move, and the slide rod 28 moves out of the second slide groove 29, releasing the lock on the linkage plate 26 and the second clamping block 71, providing convenience for the clamping and fixing of the second insertion rod 6 and the linkage plate 26, and the linkage plate 26 can move at the same time. When the top anchor tube 51 drives the linkage plate 26 to move toward the outside of the anchor ring 2, when the second slide groove 29 and the slide rod 28 are aligned, the push plate 82 is pressed toward the anchor ring 2, and the push plate 82 drives the push rod 81 and the slide rod 28 to move. One end of the inclined surface of the slide rod 28 gradually moves into the push groove 711. Under the push of the slide rod 28, the second clamping block 71 moves in the direction away from the second slot 261, so that the second clamping block 71 and the second clamping groove 61 are disengaged, thereby releasing the clamping fixation of the second plug rod 6 and the linkage plate 26. At the same time, the slide rod 28 completes the locking of the linkage plate 26.
[0046] The implementation principle of a hydraulic push top anchor head used in a hydraulic anchor tensioning jack in the embodiment of the present application is as follows: after the anchor cable passes through the anchor ring 2 and the cylinder body 1, the cylinder body 1 moves toward the anchor ring 2, causing the top anchor head 3 to be in close contact with the anchor ring 2, and realizing the clamping and fixing of the first plug rod 31 and the anchor ring 2. Subsequently, hydraulic oil is injected into the cylinder body 1. As the hydraulic pressure in the cylinder body 1 continues to rise, the outer cylinder 11 moves away from the anchor ring 2 relative to the middle cylinder 12. At the same time, the hydraulic oil provides power for the moving component 5, driving it to drive the second plug rod 6 to move toward the linkage plate 26. When the top anchor pipe 51 contacts the anchor plate 21, the second clamping component 7 completes the clamping and fixing of the second plug rod 6 and the anchor plate 21. Under the push of the second plug rod 6, the linkage plate 26, the fixed plate and the anchor plate 21 move in sequence, and finally the anchor plate 21 firmly clamps the anchor cable. During the tensioning of the anchor cable, the hydraulic oil continuously provides power for the pushing component 8 to ensure that the anchor cable is always firmly fixed. The hydraulic oil is used to supply energy to the top anchor pipe 51, which effectively compensates for the possible lack of spring elastic force, thereby improving the retention coefficient of the anchoring force of the anchor cable. At the same time, after the tensioning is completed, the second plug rod 6 is driven by the moving component 5 to move away from the anchor ring 2, and the second plug rod 6 prompts the anchor sheet 21 to move toward the outside of the anchor ring 2. The anchor sheet 21 releases the clamping fixation of the anchor cable, and the staff does not need to manually move the anchor sheet 21 with the help of tools, which saves time and improves the working efficiency of the anchor cable tensioning.
[0047] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A hydraulic push top anchor head used for a hydraulic anchor tensioning jack, suitable for an anchor ring (2) and an anchor sheet (21), comprising a cylinder body (1), wherein a plurality of anchor sheets (21) are provided, wherein the plurality of anchor sheets (21) are arranged in sequence along the circumferential inner wall of the anchor ring (2), and the anchor sheet (21) and the anchor ring (2) are slidably connected, characterized in that: One end of the cylinder body (1) is connected to a top anchor head (3), and a first plug rod (31) is fixedly arranged at one end of the top anchor head (3) away from the cylinder body (1). A first slot (22) is provided on the side of the anchor ring (2) facing the cylinder body (1), and the first plug rod (31) and the first slot (22) are plugged and adapted. A first clamping assembly (4) for clamping and fixing with the anchor ring (2) is arranged on the first plug rod (31), and a moving assembly (5) capable of driving the anchor plate (21) to move is arranged at one end of the cylinder body (1) close to the top anchor head (3), and a plurality of second plug rods (6) are fixedly arranged on the moving assembly (5), and a second clamping assembly (7) capable of clamping and fixing with the second plug rods (6) is arranged at the anchor plate (21), and the plurality of second plug rods (6) and the anchor plate (21) correspond one to one.
2. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 1, characterized in that: The anchor ring (2) is provided with a first clamping groove (23) at one side wall of the first slot (22), the first clamping groove (23) penetrates the outer side wall of the anchor ring (2), a first movable groove (311) is provided at one side wall of the first insertion rod (31), the first clamping assembly (4) comprises a first clamping block (41) and a first spring (42), the first clamping block (41) is arranged in the first movable groove (311), the first clamping block (41) and the first insertion rod (31) are slidably connected, the first spring (42) is fixed between the first clamping block (41) and the inner bottom wall of the first movable groove (311), the side of the first clamping block (41) away from the first spring (42) is arranged as an inclined surface, the first clamping block (41) and the first clamping groove (23) are clamped and adapted, and the anchor ring (2) is provided with a pushing assembly (8) capable of pushing the first clamping block (41) at the first clamping groove (23).
3. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 2, characterized in that: The pushing assembly (8) comprises a push rod (81) and a push plate (82), one end of the push rod (81) extends into the first slot (23), the push rod (81) and the anchor ring (2) are slidably connected, one end of the push rod (81) outside the first slot (23) is fixedly connected to the push plate (82), a second spring (24) is fixedly arranged between the push plate (82) and the anchor ring (2), the second spring (24) is sleeved outside the push rod (81), and the elastic force of the second spring (24) is smaller than the elastic force of the first spring (42).
4. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 1, characterized in that: The inner wall of the anchor ring (2) is provided with a plurality of placement grooves (25), the anchor sheet (21) is slidably connected in the placement grooves (25) of the anchor ring (2) and corresponds to each other one by one, the placement grooves (25) penetrate a side wall of the anchor ring (2) facing the top anchor head (3), and a side wall of the placement groove (25) away from the top anchor head (3) is arranged as an inclined surface, the anchor ring (2) is slidably connected with a linkage plate (26) at the placement groove (25), the linkage plate (26) is located on a side of the anchor sheet (21) facing the top anchor head (3), a fixing rod (27) is fixed on a side of the anchor sheet (21) facing the linkage plate (26), an end of the fixing rod (27) away from the anchor sheet (21) is slidably connected to the linkage plate (26), and a second clamping assembly (7) is arranged on the linkage plate (26).
5. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 4, characterized in that: The linkage plate (26) is provided with a second slot (261), the second insertion rod (6) and the second slot (261) are plugged and adapted, a second card slot (61) is provided on one side of the second insertion rod (6), a second movable slot (262) is provided on a side wall of the linkage plate (26) in the second slot (261), the second card assembly (7) comprises a second card block (71) and a third spring (72), the second card block (71) is arranged in the second movable slot (262), the second card block (71) and the linkage plate (26) are slidably connected, the second card block (71) and the second card slot (61) are connected to each other, and the second card block (71) and the second card slot (61) are connected to each other. 1) Card-fitting, a side of the second card block (71) close to the second slot (261) is set as an inclined surface, a side wall of the linkage plate (26) is provided with a first slide groove (263) along the length direction of the second movable groove (262) on the side wall of the second movable groove (262), the linkage plate (26) is slidably connected with a slider (264) in the first slide groove (263), the side of the slider (264) facing the second movable groove (262) is fixedly connected to the second card block (71), and the third spring (72) is fixedly arranged between the second card block (71) and a side wall of the first slide groove (263).
6. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 5, characterized in that: A sliding rod (28) is fixedly arranged on the side of the push plate (82) facing the anchor ring (2), and one end of the sliding rod (28) away from the push plate (82) passes through the anchor ring (2), the sliding rod (28) and the anchor ring (2) are slidably connected, and a second sliding groove (29) is provided on the side of the linkage plate (26) facing the push plate (82), and the sliding rod (28) and the second sliding groove (29) are plug-fitted.
7. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 6, characterized in that: The second slide groove (29) is connected to the second movable groove (262); a push groove (711) is provided on the side of the second clamping block (71) facing the second slide groove (29); a side of the slide rod (28) away from the push plate (82) is arranged as an inclined surface; and the push grooves (711) of the slide rod (28) and the push plate (82) are plug-fitted.
8. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 5, characterized in that: The cylinder body (1) comprises an outer cylinder (11), a middle cylinder (12) and an inner cylinder (13); the outer cylinder (11), the middle cylinder (12) and the inner cylinder (13) are all tubular; one end of the outer cylinder (11) is closed; the outer cylinder (11) is sleeved outside the middle cylinder (12); the middle cylinder (12) and the outer cylinder (11) are slidably connected; the middle cylinder (12) is sleeved outside the inner cylinder (13); the middle cylinder (12) and the inner cylinder (13) are slidably connected; the top anchor head (3) is fixedly arranged at the end of the middle cylinder (12) away from the closed end of the outer cylinder (11); the inner cylinder (13) and the closed end of the outer cylinder (11) are fixedly connected; and the moving component (5) is arranged at the end of the middle cylinder (12) close to the top anchor head (3).
9. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 8, characterized in that: The moving assembly (5) comprises a top anchor tube (51) and a small piston (52), both of which are arranged in the middle cylinder (12), and both of which are slidably connected to the middle cylinder (12). The small piston (52) is arranged on a side of the top anchor tube (51) away from the top anchor head (3), and the second insertion rod (6) is fixedly connected to a side of the top anchor tube (51) away from the small piston (52). A guide hole (121) is provided on a side of the middle cylinder (12) away from the top anchor head (3), and the length direction of the guide hole (121) is parallel to the length direction of the middle cylinder (12). The middle cylinder (12) is provided with a chamber (122) at the small piston (52), and an end of the guide hole (121) close to the top anchor head (3) is connected to the chamber (122).
10. The hydraulic push top anchor head used for hydraulic anchor tensioning jack according to claim 9, characterized in that: A fourth spring (123) is fixedly arranged between the top anchor head (3) and the top anchor pipe (51), and the fourth spring (123) is sleeved outside the top anchor pipe (51).