Adjustable anchor withdrawing base and device for prestressed steel strand double-top anchor withdrawing

Abstract

The utility model provides an adjustable anchor withdrawing base and a device for prestressed steel strand double-top anchor withdrawing. The problem that in the prior art, an anchor withdrawing base cannot adapt to the inclination angle of concrete and the length, stretching out of the concrete, of a prestressed steel strand is solved. The length of the anchor withdrawing base is adjusted by driving the second base body to be close to or away from the second base body through the first driving assembly so as to adapt to the lengths of different preset steel strands extending out of a preset supporting surface, and the inclination of the first supporting piece relative to the second base body is adjusted by driving the first supporting piece to rotate through the second driving assembly. The anchor withdrawing base is adapted to the inclination angles of different preset supporting surfaces; and therefore, the anchor withdrawing base can adapt to various application scenes, the construction cost is reduced, and the construction period is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of prestressed steel strand anchor withdrawal, in particular to an adjustable anchor withdrawal base and a device for double-top anchor withdrawal of prestressed steel strand. Background Art

[0002] Prestressed steel strand is a stranded steel cable composed of 2, 3, 7 or 19 high-strength steel wires. After stress relief treatment (stabilization treatment), it is suitable for prestressed concrete and similar purposes. There is also a double-top anchor withdrawal device for prestressed steel strand in the prior art, which includes an anchor withdrawal base, a through-type jack, a working anchor and a front-clip jack. The side of the anchor withdrawal base is usually provided with a working hole. Through the cooperation of the four, the operator can replace the working clip of the working anchor through the working hole to achieve anchor withdrawal.

[0003] In this way, the anchor base is usually set according to different use environments, such as the inclination of the concrete to set the inclination of the connection surface between the anchor base and the concrete, and the length of the prestressed steel strand extending out of the concrete to set the height of the anchor base. The customized anchor base is scrapped after the anchor removal operation is completed. However, in the same construction project or different construction projects, multiple anchor bases are usually required. If multiple anchor bases are customized, it will increase the construction cost and slow down the construction progress because it takes a certain period of time to complete the customized development. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of the utility model is to provide an adjustable anchor withdrawal base and a device for double-top anchor withdrawal of prestressed steel strands, which is used to solve the problems in the prior art that the anchor withdrawal base cannot adapt to the inclination angle of concrete and the length of the prestressed steel strands extending out of the concrete.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides an adjustable anchor unloading base, which includes: a first base body, a second base body, a first support member, a first drive assembly and a second drive assembly; one end of the second base body is slidably connected to the first base body, and the other end is rotatably connected to the first support member; one end of the first base body away from the second base body is connected to a through-type jack; one end of the first support member away from the second base body is connected to a preset support surface; a working hole is provided at the connection between the first base body and the second base body; the first drive assembly is used to drive the first base body to approach or move away from the second base body to adjust the length of the anchor unloading base; the second drive assembly is used to drive the first support member to rotate to adjust the inclination of the first support member relative to the second base body.

[0006] Optionally, the second base body includes a flange and a second support member. The second support member is disposed on the flange, and one end of the second support member away from the flange is slidably connected to the first base body. The first driving assembly is disposed on the flange. The first driving assembly includes a cylinder, a liquid storage cavity, and a sliding cavity. The liquid storage cavity is disposed within the flange, the sliding cavity is disposed within the second support member, and the first base body is slidably disposed within the sliding cavity. The cylinder is disposed on the flange. The cylinder is used to drive the liquid within the liquid storage cavity to be transferred into the sliding cavity, and is used to drive the first base body to slide within the sliding cavity, so that the first base body moves away from the flange.

[0007] Optionally, the driving assembly further includes a pressure relief member, and the pressure relief member is used to transfer the liquid within the sliding cavity into the liquid storage cavity, so as to drive the first base body to slide within the sliding cavity, so that the first base body approaches the flange.

[0008] Optionally, there are two second support members, and sliding cavities are respectively disposed on the two second support members. The two second support members are spaced apart and symmetrically disposed on the flange. Two working holes are formed between the two second support members. The cylinder is disposed corresponding to one of the working holes. There are two liquid storage cavities, which are respectively disposed corresponding to one of the second support members. The cylinder is used to simultaneously drive the liquid stored in the two liquid storage cavities to be transferred into the sliding cavities of the corresponding second support members. The pressure relief member is connected to the two liquid storage cavities and the two sliding cavities, and is used to simultaneously drive the liquid within the two sliding cavities to be transferred into the corresponding liquid storage cavities.

[0009] Optionally, the cylinder includes two pressure supply boxes and a plunger assembly. The two pressure supply boxes are respectively disposed with the sliding cavity and the liquid storage box of one of the support members. The plunger assembly includes a first plunger, a second plunger, and a third plunger. One end of the first plunger is disposed within one of the pressure supply boxes, and the other end extends out of the pressure supply box and is connected to the third plunger. One end of the second plunger is disposed within the other pressure supply box, and the other end extends out of the pressure supply box and is connected to the third plunger. The third plunger is used to simultaneously drive the first plunger and the second plunger to move within the pressure supply box.

[0010] Optionally, an installation portion is disposed on the flange, and the installation portion is an arc-shaped structure. A rotating portion is disposed on the first support member, and the rotating portion is an arc-shaped structure adapted to the installation portion. And / or, a first installation member is disposed on the flange. A first rotating shaft is disposed on the rotating portion of the first support member, and the rotating portion of the first support member is rotatably connected to the first installation member through the first rotating shaft.

[0011] Optionally, a second installation member is further disposed on the flange, and the second driving assembly is disposed on the second installation member. The second driving assembly includes a driving member and a transmission member. The driving member is rotatably connected to the transmission member and is used to drive the transmission member to move linearly. The transmission member passes through the second installation member and is rotatably connected to the first support member. The included angle formed by the central axis of the transmission member and the center line of the flange is an acute angle.

[0012] Optionally, a third mounting member is provided on the first supporting member, and the third mounting member is provided at one end of the first supporting member close to the flange, and an avoidance portion is provided on the flange, and the transmission member passes through the avoidance portion and is rotatably connected to the third mounting member; there are two third mounting members; a waist-shaped hole is provided on the third mounting member; the second driving assembly also includes a second rotating shaft provided on the transmission member, and the transmission member is rotatably connected to the third mounting member through the second rotating shaft; one end of the second rotating shaft is provided in the waist-shaped hole of a third mounting member, and the other end is provided in the waist-shaped hole of another third mounting member.

[0013] Optionally, a fixing member is further provided on the second supporting member, and the fixing member is used to fix the supporting member on a preset supporting surface.

[0014] The utility model also provides a device for double-top anchor withdrawal of prestressed steel strands, comprising the above-mentioned adjustable anchor withdrawal base, and also comprising a through-type jack, a tool anchor and a front-clip jack; the through-type jack is sleeved on the prestressed steel strand, one end of which is connected to the adjustable anchor withdrawal base, and the other end is connected to the tool anchor; the tool anchor is arranged on the prestressed steel strand; the front-clip jack is arranged on the prestressed steel strand, and one end of which is connected to an end of the tool anchor away from the through-type jack.

[0015] As described above, the utility model provides an adjustable anchor removal base and device for double-top anchor removal of prestressed steel strands, which has at least the following beneficial effects: the first driving component drives the second seat body to approach or move away from the second seat body to adjust the length of the anchor removal base to adapt to different preset lengths of the steel strand extension and the preset support surface, and the second driving component drives the first support member to rotate to adjust the inclination of the first support member relative to the second seat body, so that the anchor removal base can adapt to different inclination angles of the preset support surface; thereby, the anchor removal base can adapt to a variety of applicable scenarios, reduce construction costs and speed up the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Shown is a schematic diagram of an angle structure of the adjustable anchor withdrawal base of the utility model.

[0017] Figure 2 Shown is a schematic structural diagram of the adjustable anchor withdrawal base at another angle of the present invention.

[0018] Figure 3 Shown is a top view schematic diagram of the adjustable anchor withdrawal base of the utility model.

[0019] Figure 4 Display as Figure 3 Sectional view taken along AA.

[0020] Figure 5 It is a schematic structural diagram showing the connection between the second support member and the first seat body.

[0021] Figure 6 Shown is a cross-sectional view of the flange of the present invention.

[0022] Figure 7 Display as Figure 3 Sectional view taken along BB.

[0023] Figure 8 Shown is a schematic diagram of the structure of the anchor release device.

[0024] Component number description

[0025] 1. First seat body, 2. Second seat body, 21. Flange, 211. Mounting portion, 212. First mounting member, 213. Avoiding portion, 214. Second mounting member, 22. Second supporting member, 3. First supporting member, 31. Rotating portion, 32. Third mounting member, 4. First driving assembly, 41. Cylinder, 411. Pressure supply box, 412. Plunger assembly, 4121. First plunger, 4122. Second plunger, 4123. Third plunger, 42. Liquid storage chamber, 43. Sliding chamber, 44. Pressure relief member, 5. Second driving assembly, 51. Driving member, 52. Transmission member, 53. Second rotating shaft, 6. Working hole, 7. Through-type jack, 8. Tool anchor, 9. Front card jack. DETAILED DESCRIPTION

[0026] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0027] Please refer to all the following drawings. It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the utility model without affecting the effects and purposes that can be achieved by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change in the technical content.

[0028] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0029] See also Figures 1-7, the present utility model provides an adjustable anchor retraction base for prestressed steel strands with double-top anchor retraction, which includes: a first seat body 1, a second seat body 2, a first support member 3, a first driving assembly 4, and a second driving assembly 5; one end of the second seat body 2 is slidably connected to the first seat body 1, and the other end is rotatably connected to the first support member 3; the end of the first seat body 1 away from the second seat body 2 is connected to a through-hole jack 7; the end of the first support member 3 away from the second seat body 2 is connected to a preset support surface; a working hole 6 is provided at the connection between the first seat body 1 and the second seat body 2; the first driving assembly 4 is used to drive the first seat body 1 to approach or move away from the second seat body 2 to adjust the length of the anchor retraction base; the second driving assembly 5 is used to drive the first support member 3 to rotate to adjust the inclination of the first support member 3 relative to the second seat body 2. Specifically, the first seat body 1 and the second seat body 2 are respectively hollow frustum-shaped structures, and their interiors are used to accommodate prestressed steel strands. After the first body and the second seat body 2 are installed together, a working hole 6 is formed at the connection between the first seat body 1 and the second seat body 2, that is, a part of the structure of the working hole 6 is provided at the circumferentially corresponding positions of the first seat body 1 and the second seat body 2, and the two parts of the structure are combined to form the working hole 6 after the first seat body 1 and the second seat body 2 are connected. When the first driving assembly 4 drives the first seat body 1 to approach or move away from the second seat body 2, on the one hand, the length of the anchor retraction base is changed to adapt to different construction scenarios, and on the other hand, the working hole 6 on the first seat body 1 and the second seat body 2 is enlarged, facilitating the operator to replace the working clip of the working anchor. It can be understood that the preset support surface can be the support surface on the concrete provided with prestressed steel strands or other components with prestressed steel strands, and this embodiment does not limit this. When facing a preset support surface with an inclination angle, the second driving assembly 5 can drive the first support member 3 to rotate, and then the first support member 3 can be attached to the preset support surface to ensure that the entire anchor retraction operation can proceed normally.

[0030] The second seat body 2 includes a flange 21 and a second support member 22; the second support member 22 is provided on the flange 21, and the end of the second support member 22 away from the flange 21 is connected to the first seat body 1; the first driving assembly 4 is provided on the flange 21. The flange 21 is a hollow cylindrical structure, the second support member 22 is provided on one side surface of the flange 21, and the first driving assembly 4 is also provided on this side surface; the other side surface of the flange 21 is used for rotatably connecting with the first support member 3. The second support member 22 can be a hollow frustum structure provided with a part of the structure of the working hole 6, or it can be an arc-shaped side plate. Two side plates are arranged at intervals on the flange 21, and the interval between the two forms a part of the structure of the working hole 6. This embodiment does not limit this.

[0031] The first driving component 4 includes a cylinder 41, a liquid storage cavity 42 and a sliding cavity 43; the liquid storage cavity 42 is arranged in the flange 21, the sliding cavity 43 is arranged in the second support member 22, and the first seat body 1 is slidably arranged in the sliding cavity 43; the cylinder 41 is arranged on the flange 21; the cylinder 41 is used to drive the liquid in the liquid storage cavity 42 to transfer into the sliding cavity 43, and is used to drive the first seat body 1 to slide in the sliding cavity 43, so that the first seat body 1 moves away from the flange 21. A liquid storage tank for containing hydraulic oil is formed inside the flange 21, and a sliding cavity 43 for containing hydraulic oil is arranged inside the second support member 22. Specifically, the liquid storage tank and the sliding cavity 43 are connected to the cylinder 41 through a liquid inlet pipe, and a one-way valve is arranged on the pipe. During use, the cylinder 41 transfers the hydraulic oil in the liquid storage cavity 42 into the sliding cavity 43, that is, the hydraulic oil in the sliding cavity 43 increases, and then drives the first seat body 1 to slide along the sliding cavity 43 in the direction away from the flange 21, thereby increasing the length of the anchor retraction base.

[0032] The first driving component 4 further includes a pressure relief member 44, and the pressure relief member 44 is used to transfer the liquid in the sliding cavity 43 into the liquid storage cavity 42, so as to drive the first seat body 1 to slide in the sliding cavity 43, so that the first seat body 1 approaches the flange 21. Specifically, the sliding cavity 43 and the liquid storage tank are connected through a liquid outlet pipe, and the pressure relief member 44 is connected to the liquid outlet pipe. When the pressure relief member 44 is opened, the hydraulic oil in the sliding cavity 43 is transferred into the liquid storage tank through the pipe, thereby driving the first seat body 1 to approach the flange 21. The pressure relief member 44 can be a one-way valve, that is, the hydraulic oil in the sliding cavity 43 can flow into the liquid storage tank through the liquid outlet pipe, but the hydraulic oil in the liquid storage tank cannot flow into the sliding cavity 43 through the liquid outlet pipe.

[0033] There are two second support members 22, and sliding cavities 43 are respectively arranged on the two second support members 22; the two second support members 22 are spaced apart and symmetrically arranged on the flange 21; two working holes 6 are formed between the two second support members 22; the air cylinder 41 is arranged corresponding to one of the working holes 6; there are two liquid storage cavities 42, which are respectively arranged corresponding to one of the second support members 22; the air cylinder 41 is used to simultaneously drive the liquid stored in the two liquid storage cavities 42 to transfer into the sliding cavity 43 of the corresponding second support member 22; the pressure relief member 44 is connected to the two liquid storage cavities 42 and the two sliding cavities 43, and is used to simultaneously drive the liquid in the two sliding cavities 43 to transfer into the corresponding liquid storage cavity 42. In this embodiment, there are two second support members 22, specifically two support plates with an arc-shaped cross-section. The two second support members 22 are spaced apart and symmetrically arranged on the flange 21. Since they are spaced apart, a part of the two working holes 6 is formed on the second seat body 2. When the first seat body 1 and the second seat body 2 are connected, the two working holes 6 are formed. Each second support member 22 is provided with a sliding cavity 43, and two liquid storage boxes are arranged on the flange 21, which are respectively arranged corresponding to one of the second support members 22. The air cylinder 41 is used to simultaneously drive the liquid in the two liquid storage cavities 42 to move into the sliding cavity 43, and then drive the first seat body 1 arranged in the two second support members 22 to rise synchronously, avoiding the first seat body 1 from deviating to one side. After the through-hole jack 7 is installed on the first seat body 1, the force is uneven, affecting the stability of the operation of the entire device.

[0034] The air cylinder 41 includes two pressure supply boxes 411 and a plunger assembly 412; the two pressure supply boxes 411 are respectively arranged with the sliding cavity 43 and the liquid storage box of one of the second support members 22; the plunger assembly 412 includes a first plunger 4121, a second plunger 4122 and a third plunger 4123; one end of the first plunger 4121 is arranged in one of the pressure supply boxes 411, and the other end extends out of the pressure supply box 411 and is connected to the third plunger 4123; one end of the second plunger 4122 is arranged in the other pressure supply box 411, and the other end extends out of the pressure supply box 411 and is connected to the third plunger 4123; the third plunger 4123 is used to simultaneously drive the first plunger 4121 and the second plunger 4122 to move in the pressure supply box 411. The first plunger and the second plunger 4122 are respectively arranged corresponding to one of the liquid storage cavities 42 and the sliding cavity 43, and the third plunger 4123 connects the two together. Then when the operator drives the third plunger 4123 to move, the second plunger 4122 and the first plunger 4121 move synchronously. It can be understood that the two pressure supply boxes 411 can be two sub-pressure supply boxes 411 formed by separating a box body with a partition, or two independent pressure supply boxes 411. This embodiment does not limit this.

[0035] An installation part 211 is provided on the flange 21, and the installation part 211 is an arc-shaped structure; a rotating part 31 is provided on the first support member 3, and the rotating part 31 is an arc-shaped structure adapted to the installation part 211. Specifically, in this embodiment, the arc-shaped structure is provided on the side of the flange 21 away from the second support member 22. Correspondingly, the rotating part 31 is also provided on the side of the first support member 3 close to the second support member 22. When in use, when the transmission member 52 of the second driving assembly 5 drives the first support member 3 to rotate, the first support member 3 rotates with the rotating part 31 as the fulcrum, that is, with the installation part 211 as the fulcrum. After the flange 21 supports on the preset support surface, since both the installation part 211 and the rotating part 31 are arc-shaped structures, the arc-shaped outer side surface of the rotating part 31 and the arc-shaped inner side surface of the installation part 211 always remain in contact. As the first stress structure, the connection part between the transmission member 52 and the first support member 3 is used as the second stress structure. The two act together to enable the first support member 3 to always remain in contact with the preset support surface, ensuring that the anchor retraction base stays in the predetermined position and guaranteeing the stability of the operation of the anchor retraction device. It can be understood that when not in use, since the transmission member 52 and the first support member 3 always remain connected, the relative position between the first support member 3 and the flange 21 will not change.

[0036] In one embodiment, a first installation part 212 is provided on the flange 21; a first rotating shaft is provided on the rotating part 31 of the first support member 3, and the rotating part 31 of the first support member 3 is rotatably connected to the first installation part 212 through the first rotating shaft. Specifically, the first installation part 212 is provided corresponding to the rotating part 31. When not in use, the first installation part 212 and the transmission member 52 act together, that is, fixed at two points, to ensure that the relative position between the first support member 3 and the flange 21 will not change. When in use, the first installation part 212, the installation part 211, and the transmission member 52 are stressed to ensure that the first support member 3 can always remain in contact with the preset support surface.

[0037] A second installation part 214 is further provided on the flange 21. The second driving assembly 5 is provided on the second installation part 214. The second driving assembly 5 includes a driving part 51 and a transmission member 52. The driving part 51 is rotatably connected to the transmission member 52 and is used to drive the transmission member 52 to move linearly; the transmission member 52 passes through the second installation part 214 and is rotatably connected to the first support member 3; the included angle formed by the central axis of the transmission member 52 and the central line of the flange 21 is an acute angle. The included angle formed by the straight line perpendicular to the connection surface between the second installation part 214 and the second driving assembly 5 and the central line of the flange 21 is an acute angle.

[0038] A third mounting member 32 is provided on the first support member 3. The third mounting member 32 is disposed at one end of the first support member 3 close to the flange 21. An avoidance portion 213 is provided on the flange 21. The transmission member 52 passes through the avoidance portion 213 and is rotatably connected to the third mounting member 32. There are two third mounting members 32; the third mounting member 32 is provided with a waist-shaped hole; the second driving assembly 5 further includes a second rotating shaft 53 provided on the transmission member 52. The transmission member 52 is rotatably connected to the third mounting member 32 through the second rotating shaft 53; one end of the second rotating shaft 53 is disposed in the waist-shaped hole of one third mounting member 32, and the other end is disposed in the waist-shaped hole of the other third mounting member 32. The second driving assembly 5 includes a driving member 51. The driving member 51 is used to drive the transmission member 52 to move linearly; the driving member 51 is a linear motor or a cylinder 41, preferably a cylinder 41. The transmission member can be a lead screw or a transmission shaft coaxially arranged with the driving shaft of the driving member 32. Of course, it can also be other structures, and this embodiment does not limit this.

[0039] Specifically, a flange 21 is provided at the large end of the flange 21. A second mounting member 214 is provided on the side surface of the flange 21 facing the small end. The first support member 3 is disposed on the side surface of the flange 21 away from the flange 21. The connection surface between the second mounting member 214 and the second driving assembly 5 and the connection surface between the second mounting member 214 and the base are not perpendicular, that is, the angle formed by the straight line perpendicular to the connection surface between the second mounting member 214 and the second driving assembly 5 and the center line of the flange 21 is an acute angle. An avoidance portion 213 is provided on the flange 21. The avoidance portion 213 is a notch to facilitate the connection between the transmission member 52 and the third mounting member 32. The third mounting member 32 is provided in two. The two third mounting members 32 are arranged oppositely, and the transmission member 52 is located between them. When the driving member 51 drives the transmission member 52 to move linearly, the second rotating shaft 53 slides in the waist-shaped hole to drive the first support member 3 to rotate; optionally, a bearing is provided on the second rotating shaft 53. The second rotating shaft 53 slides in the waist-shaped hole through the bearing. The setting of the bearing reduces the friction between the second rotating shaft 53 and the inner side wall of the waist-shaped hole and facilitates the transmission member 52 to slide in the waist-shaped hole. The avoidance portion 213 is a notch provided on the flange 21.

[0040] The first support member 3 is further provided with a fixing member for fixing the anchor withdrawal base on a preset support surface; the fixing member can be a ground nail or a bolt provided on the side surface of the first support member 3 away from the first seat body 1. In one embodiment, both the ground nail and the bolt are provided on the first support member 3. During use, the ground nail and / or the bolt penetrate into the preset support surface to fix the anchor withdrawal base on the preset support surface.

[0041] Please refer to Figure 8, the present utility model further provides a device for double-top anchor withdrawal of prestressed steel strands, which includes the adjustable anchor withdrawal base described above, and further includes a through-hole jack 7, a tool anchor 8 and a front-caliper jack 9; the through-hole jack is sleeved on the prestressed steel strand, one end of which is connected to the first seat body 1 of the adjustable anchor withdrawal base, and the other end is connected to the tool anchor 8; the tool anchor 8 is arranged on the prestressed steel strand; the front-caliper jack 9 is arranged on the prestressed steel strand, and one end of which is connected to the end of the tool anchor 8 away from the through-hole jack 7.

[0042] Specifically, during use, first install the adjustable anchor withdrawal base, and then install the through-hole jack 7. The through-hole jack 7 extends a certain distance in advance, for example, 18 cm. Then install the tool anchor 8 and the front-caliper jack 9 on the prestressed steel strand. Then, use the front-caliper jack 9 to tension the prestressed steel strand for anchor withdrawal. When the working wedges of the working anchor are easy to remove, stop tensioning the prestressed steel strand. The operator takes out the working wedges through the working hole 6, returns the oil and jacks back the hollow jack, so that the cylinder of the hollow jack retracts a certain distance (for example, 17 cm), and then reinstalls the working wedges to re-anchor the prestressed steel strand on the working anchor. Then, retract the cylinder of the hollow jack by another certain distance (for example, 1 cm) until the prestressed steel strand is only anchored to the working anchor by the working wedges. Then, remove the tension force of the prestressed steel strand applied by the front-caliper jack 9, that is, complete the first unloading of the prestressed steel strand; until all the prestressed steel strands are unloaded, the device can be removed.

[0043] In summary, the adjustable anchor withdrawal base provided by the present utility model includes a first seat body 1, a second seat body 2, a first support member 3, a first drive assembly 4 and a second drive assembly 5; by driving the second seat body 2 to approach or move away from the second seat body 2 through the first drive assembly 4, the length of the anchor withdrawal base is adjusted to adapt to the lengths of different preset steel strand extensions and preset support surfaces, and the second drive assembly 5 drives the first support member 3 to rotate to adjust the inclination of the first support member 3 relative to the second seat body 2, so that the anchor withdrawal base can adapt to different preset support surface inclination angles; thereby enabling the anchor withdrawal base to adapt to a variety of application scenarios, reducing construction costs and accelerating the construction cycle. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0044] The above embodiments are only illustrative of the principles and effects of the present utility model and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. An adjustable anchor undocking base, characterized in that: The adjustable anchor-removing base comprises: a first base body, a second base body, a first support member, a first drive assembly and a second drive assembly; One end of the second seat body is slidably connected to the first seat body, and the other end is rotatably connected to the first support member; one end of the first seat body away from the second seat body is connected to a through-type jack; one end of the first support member away from the second seat body is connected to a preset support surface; A working hole is provided at the connection between the first seat body and the second seat body; The first driving assembly is used to drive the first seat body to move closer to or away from the second seat body to adjust the length of the unanchoring base; The second driving assembly is used to drive the first supporting member to rotate so as to adjust the inclination of the first supporting member relative to the second base.

2. The adjustable anchor removal base according to claim 1, characterized in that: The second seat body comprises a flange and a second support member, the second support member is arranged on the flange, and one end of the second support member away from the flange is slidably connected to the first seat body; the first driving assembly is arranged on the flange; The first driving assembly includes a cylinder, a liquid storage chamber, and a sliding chamber; The liquid storage cavity is arranged in the flange, the sliding cavity is arranged in the second support member, and the first seat body is slidably arranged in the sliding cavity; the cylinder is arranged on the flange; The cylinder is used to drive the liquid in the liquid storage cavity to transfer to the sliding cavity, and to drive the first seat body to slide in the sliding cavity, so as to move the first seat body away from the flange.

3. The adjustable anchor removal base according to claim 2, characterized in that: The first driving assembly further includes a pressure relief member, which is used to transfer the liquid in the sliding cavity to the liquid storage cavity to drive the first seat body to slide in the sliding cavity, so that the first seat body is close to the flange.

4. The adjustable anchor removal base according to claim 3, characterized in that: There are two second supporting members, and each of the two second supporting members is provided with a sliding cavity; The two second support members are spaced apart and symmetrically arranged on the flange; two working holes are formed between the two second support members; The cylinder is arranged corresponding to one of the working holes; There are two liquid storage chambers, each corresponding to one of the second support members; the cylinder is used to simultaneously drive the liquid stored in the two liquid storage chambers to be transferred to the corresponding sliding chamber of the second support member; The pressure relief member is connected to the two liquid storage chambers and the two sliding chambers, and is used for simultaneously driving the liquid in the two sliding chambers to be transferred to the corresponding liquid storage chamber.

5. The adjustable anchor removal base according to claim 4, characterized in that: The cylinder comprises two pressure supply boxes and a plunger assembly; the two pressure supply boxes are respectively arranged with the sliding cavity of one of the second supporting members and the liquid storage tank; The plunger assembly includes a first plunger, a second plunger and a third plunger; one end of the first plunger is arranged in one of the pressure supply boxes, and the other end extends out of the pressure supply box to be connected to the third plunger; one end of the second plunger is arranged in the other pressure supply box, and the other end extends out of the pressure supply box to be connected to the third plunger; the third plunger is used to simultaneously drive the first plunger and the second plunger to move in the pressure supply box.

6. An adjustable anchor removal base according to any one of claims 2 to 5, characterized in that: The flange is provided with a mounting portion, and the mounting portion is an arc-shaped structure; The first support member is provided with a rotating portion, and the rotating portion is an arc-shaped structure adapted to the mounting portion; And / or, a first mounting member is disposed on the flange; a first rotating shaft is disposed on the rotating portion of the first supporting member, and the rotating portion of the first supporting member is rotatably connected to the first mounting member via the first rotating shaft.

7. The adjustable anchor removal base according to claim 6, characterized in that: A second mounting member is also provided on the flange, and the second driving assembly is provided on the second mounting member; The second driving assembly includes a driving member and a transmission member, wherein the driving member is rotatably connected to the transmission member and is used to drive the transmission member to move linearly; The transmission member passes through the second mounting member and is rotatably connected to the first supporting member; the angle formed by the central axis of the transmission member and the center line of the flange is an acute angle.

8. The adjustable anchor removal base according to claim 7, characterized in that: A third mounting member is provided on the first supporting member, the third mounting member is provided at one end of the first supporting member close to the flange, an escape portion is provided on the flange, and the transmission member passes through the escape portion and is rotatably connected to the third mounting member; There are two third mounting members; each of the third mounting members is provided with a waist-shaped hole; The second driving assembly also includes a second rotating shaft arranged on the transmission member, and the transmission member is rotatably connected to the third mounting member through the second rotating shaft; one end of the second rotating shaft is arranged in a waist-shaped hole of one of the third mounting members, and the other end is arranged in a waist-shaped hole of another of the third mounting members.

9. The adjustable anchor removal base according to claim 8, characterized in that: The first supporting member is also provided with a fixing member, and the fixing member is used to fix the first supporting member on the preset supporting surface.

10. A device for double top anchoring of prestressed steel strand, characterized in that: It comprises the adjustable anchor withdrawal base as claimed in any one of claims 1 to 9, and also comprises a through-type jack, a tool anchor and a front-clip jack; The through-type jack is sleeved on the prestressed steel strand, one end of which is connected to the adjustable anchor withdrawal base, and the other end is connected to the tool anchor; The tool anchor is arranged on the prestressed steel strand; the front cardan-type jack is arranged on the prestressed steel strand, and one end of the front cardan-type jack is connected to the end of the tool anchor away from the through-type jack.

Images