CN113309361B - Prestressed automatic tensioning anchoring equipment and tensioning method - Google Patents
Prestressed automatic tensioning anchoring equipment and tensioning method Download PDFInfo
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- CN113309361B CN113309361B CN202110494009.2A CN202110494009A CN113309361B CN 113309361 B CN113309361 B CN 113309361B CN 202110494009 A CN202110494009 A CN 202110494009A CN 113309361 B CN113309361 B CN 113309361B
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- lifting screw
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/12—Mounting of reinforcing inserts; Prestressing
Abstract
The invention discloses a prestressed automatic tensioning anchoring device and a tensioning method, wherein the prestressed automatic tensioning anchoring device comprises: the containing barrel is provided with a free end and a closed end, the closed end is provided with a first through hole, a supporting partition plate is formed inside the containing barrel, the supporting partition plate is provided with a second through hole which is coaxial with the first through hole, and a butt joint bin and an installation bin are formed among the supporting partition plate, the closed end and the free end; the traction structure comprises a lifting screw rod, an electric clamp and a limiting piece, wherein the lifting screw rod is axially movably arranged in the second through hole in a penetrating manner, the lifting screw rod extends into the butt joint bin and is connected with the electric clamp, the limiting piece is provided with a threaded through hole, and the lifting screw rod extends into the mounting bin and is screwed in the threaded through hole of the limiting piece; the driving device for the torsion limiting part is arranged in the installation bin; and the controller is arranged in the mounting bin and connected to the electric clamp and the driving device. The invention solves the problems that the traditional hydraulic prestress tensioning equipment is large in size, is greatly influenced by the limitation of construction environment and is low in construction efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to prestressed automatic tensioning and anchoring equipment and a tensioning method.
Background
The prestress technology is an effective way for improving the crack resistance of the concrete member, and compressive stress is applied to a tensile area of the concrete member in advance before the concrete member bears external load, so that the tensile stress generated by the external load can be partially or completely counteracted, and the occurrence of cracks is delayed or avoided.
The traditional hydraulic type prestress tensioning equipment is large in size, is greatly influenced by construction environment limitation, and is low in construction efficiency.
Disclosure of Invention
In order to overcome the defects in the prior art, a prestressed automatic tensioning and anchoring device and a tensioning method are provided so as to solve the problems that the traditional hydraulic prestressed tensioning device is large in size, is greatly influenced by the limitation of construction environment and is low in construction efficiency.
In order to achieve the above object, there is provided a prestressed automatic tension anchoring apparatus, comprising:
the supporting partition plate is provided with a second through hole which is coaxial with the first through hole, a butt joint bin is formed between the supporting partition plate and the closed end, and an installation bin is formed between the supporting partition plate and the free end;
the traction structure comprises a lifting screw rod, an electric clamp and a limiting piece, wherein the lifting screw rod can be movably arranged in the second through hole in the axial direction of the second through hole in a penetrating mode, the electric clamp is used for clamping the prestressed cable, the first end of the lifting screw rod extends into the butt joint bin and is connected to the electric clamp, the limiting piece is provided with a threaded through hole, and the second end of the lifting screw rod extends into the installation bin and is screwed in the threaded through hole of the limiting piece;
the driving device is used for twisting the limiting piece and is arranged in the mounting bin; and
and the controller is arranged in the mounting bin and connected with the electric clamp and the driving device.
Furthermore, a limiting groove for embedding the anchorage device is formed on the end face of the closed end.
Furthermore, a guide sleeve is formed in the mounting bin and is coaxial with the lifting screw rod, a sliding block is connected to the second end of the lifting screw rod, and the sliding block is slidably arranged in the guide sleeve.
Further, the guide sleeve has a square inner hole, and the shape and the size of the sliding block are matched with those of the square inner hole.
Further, the driving device includes:
the torque wrench is occluded with the limiting piece; and
and the motor is arranged in the mounting bin and is in transmission connection with the torque wrench.
Furthermore, one end of the second through hole facing the free end forms a diameter expanding hole, and the limiting piece is rotatably embedded in the diameter expanding hole.
Further, a displacement sensor is installed at the first end of the lifting screw rod and connected to the controller.
Furthermore, the prestressed cable is provided with a pressure sensor for acquiring the stress value of the prestressed cable, and the pressure sensor is connected to the controller.
Furthermore, the controller is connected with an alarm device.
The invention provides a tensioning method of prestressed automatic tensioning anchoring equipment, which comprises the following steps:
supporting the closed end of the accommodating cylinder against an anchorage of a prestressed concrete member, so that a prestressed cable of the prestressed concrete member penetrates through the first through hole of the closed end and extends into a butt joint bin of the accommodating cylinder;
the controller starts an electric clamp of the traction structure to clamp the prestressed cable;
after the electric clamp clamps the prestressed cable, the controller starts the driving device, the driving device twists the limiting part of the traction structure, the limiting part abuts against one side, far away from the closed end, of the supporting partition plate of the containing barrel, and the pulling screw of the traction structure moves towards the free end of the containing barrel along the axial direction of the second through hole so as to stretch the prestressed cable.
The prestressed automatic tensioning and anchoring device has the advantages that the closed end of the accommodating barrel is supported on the anchorage device, the controller starts the electric clamp to clamp the prestressed cable, and then the driving device is started to twist the limiting piece, so that the lifting screw rod moves towards the free end of the accommodating barrel, and the prestressed cable is tensioned. The prestress automatic tensioning and anchoring device takes the reverse operation of the lifting screw transmission combined with the supporting clapboard as a core principle, provides the tensioning stress for the prestress cable, realizes automatic tensioning and anchoring by considering the linkage of various links of multiple parts of the system, and is matched with a construction method during prestress tensioning and anchoring. Compared with the traditional hydraulic tensioning equipment, the prestressed automatic tensioning and anchoring equipment has small volume and small environmental limitation, can be more suitable for complex construction environments, can realize the automation of tensioning and anchoring and is convenient to operate; the prestress tensioning operation efficiency can be relatively improved in a specific environment, one-step forming is realized, and the prestress effect and the finished product quality are ensured.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural view of a prestressed automatic tension anchoring device according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a single prestressed cable of the prestressed automatic tensioning and anchoring device according to the embodiment of the present invention.
Fig. 3 is a schematic view illustrating a plurality of prestressed wires of the prestressed automatic tension anchoring apparatus according to the embodiment of the present invention.
Fig. 4 is a schematic structural view of an anchor pad according to an embodiment of the present invention.
Detailed Description
The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 to 4, the present invention provides a prestressed automatic tension anchoring apparatus, including: the device comprises an accommodating barrel 1, a traction structure, a driving device and a controller 4.
Specifically, the accommodating cylinder 1 has a free end and a closed end opposite to each other, wherein the closed end of the accommodating cylinder 1 is used for supporting against the anchorage device 6. The closed end of the containing cylinder 1 is provided with a prestressed cable 61 for a prestressed concrete member to penetrate through.
The receiving cylinder 1 is formed with a support partition 11 inside. The support bulkhead 11 is perforated with a second through hole. The second through-hole is arranged coaxially with the first through-hole 10. In this embodiment, the first through hole and the second through hole are coaxially disposed with the accommodating cylinder. The supporting partition plate divides the inner cavity of the containing cylinder into two parts, specifically, a butt joint cabin a is formed between the supporting partition plate 11 and the closed end of the containing cylinder 1, and an installation cabin b is formed between the supporting partition plate 11 and the free end of the containing cylinder 1. The butt joint bin of the accommodating barrel is provided with an operation opening which is communicated with the butt joint bin.
The traction structure comprises a lifting screw 21, an electric clamp 22 and a limiting piece 23.
Specifically, the pulling screw 21 is inserted into the second through hole so as to be movable in the axial direction of the second through hole. The first end of the lifting screw 21 extends into the butt joint cabin a, and the second end of the lifting screw 21 extends into the installation cabin b. The electric clamp 22 is used for clamping the prestressed cable 61. A first end of the lifting screw 21 is connected to the electric clamp 22. The limiting member 23 is provided with a threaded through hole, and the second end of the lifting screw 21 is screwed in the threaded through hole of the limiting member 23. When the prestressed cable is tensioned, the limiting piece abuts against one side, far away from the plugging end of the accommodating barrel, of the supporting partition plate so as to limit the lifting screw rod.
The driving device is arranged in the mounting bin b. The driving device is used for twisting the limiting piece 23 to enable the lifting screw rod to move towards the free end of the accommodating cylinder, and then the prestressed cable is tensioned.
The controller 4 is installed in the installation bin b. The controller 4 is connected to the electric clamp 22 and the driving device.
According to the automatic prestressed tensioning and anchoring device, the closed end of the accommodating cylinder is supported on the anchorage device, the controller starts the electric clamp to clamp the prestressed cable, and then the driving device is started to twist the limiting piece, so that the lifting screw rod moves towards the free end of the accommodating cylinder, and the prestressed cable is tensioned. The prestress automatic tensioning and anchoring device takes the reverse operation of the lifting screw transmission combined with the supporting clapboard as a core principle, provides the tensioning stress for the prestress cable, realizes automatic tensioning and anchoring by considering the linkage of various links of multiple parts of the system, and is matched with a construction method during prestress tensioning and anchoring. Compared with the traditional hydraulic tensioning equipment, the prestressed automatic tensioning and anchoring equipment has small volume and small environmental limitation, can be more suitable for complex construction environments, can realize the automation of tensioning and anchoring, and is convenient to operate; the prestress tensioning working efficiency can be relatively improved in a specific environment, the prestress tensioning working efficiency can be achieved in one step, and the prestress effect and the finished product quality are guaranteed through one-step forming.
In this embodiment, a limiting groove for embedding the anchor 6 is formed on the end surface of the closed end of the accommodating cylinder. The limiting groove is positioned on one side of the first through hole, which is far away from the free end of the containing cylinder, and the groove bottom of the limiting groove is communicated with the first through hole. The limiting groove at the closed end of the accommodating cylinder is used for embedding the anchorage device in the limiting groove to avoid displacement of the accommodating cylinder during tensioning when a prestressed cable of the prestressed concrete member is tensioned.
In a preferred embodiment, a guide sleeve 12 is formed in the mounting chamber b coaxially with the lifting screw 21. The second end of the lifting screw 21 is connected with a slide block which is arranged in the guide sleeve 12 in a sliding way. The guide sleeve is provided with a square inner hole, and the shape and the size of the sliding block are matched with those of the square inner hole, so that the sliding block can only move along the axial direction of the guide sleeve.
As a preferred embodiment, an end of the second through hole facing the free end of the accommodating barrel 1 forms a diameter expanding hole, and the limiting member is rotatably embedded in the diameter expanding hole. The limiting piece rotates in the diameter-expanding hole under the torsion of the driving device. In this embodiment, the outer diameter of the pulling screw is adapted to the inner diameter of the second through hole, and the outer diameter of the limiting member is larger than the inner diameter of the second through hole.
In this embodiment, the driving device includes: a torque wrench 31 and a motor 32. Wherein the torque wrench 31 is engaged with the limiting member. The motor 32 is installed in the installation bin b. The motor 32 is drivingly connected to the torque wrench 31. Further, the torque wrench is a jaw type torque wrench, such as a pipe wrench.
In some embodiments, the output end of the motor is coaxially arranged with the lifting screw, the output end of the motor is connected with a transmission shaft through a universal joint, and the transmission shaft is connected with the torque wrench.
The invention provides a tensioning method of prestressed automatic tensioning anchoring equipment, which comprises the following steps:
s1: the closed end of the accommodating cylinder 1 is supported against the anchorage 6 of the prestressed concrete member 5, so that the prestressed cable 61 of the prestressed concrete member 5 is inserted into the first through hole 10 of the closed end and extends into the butt-joint bin a of the accommodating cylinder 1.
S2: the controller 4 opens the power clamp 22 of the towing structure to clamp the pre-stressed cable 61.
S3: after the electrical fixture 22 clamps the prestressed cable 61, the controller 4 starts the driving device, the driving device twists the limiting member 23 of the pulling structure, the limiting member 23 abuts against one side of the supporting partition 11 of the accommodating cylinder 1 away from the closed end, and the pulling screw 21 of the pulling structure moves toward the free end of the accommodating cylinder 1 along the axial direction of the second through hole to stretch the prestressed cable 61.
In this embodiment, a displacement sensor is mounted to a first end of the pull screw 21, and the displacement sensor is connected to the controller 4. The prestressed cable 61 is equipped with a pressure sensor for acquiring a stress value of the prestressed cable 61. The pressure sensor is connected to the controller 4. An alarm device 42 is connected to the controller 4.
Specifically, the controller 4 is connected to a control panel 41, and when the prestressed cable is tensioned, a preset stress limit value and a preset displacement limit value are input through an interface of the control panel.
When the prestressed cable is stretched, the switch is started through the control panel, the electric clamp is started by the controller, and the electric clamp is controlled to lock the end of the prestressed cable; the controller starts the motor, and the torque wrench twists the limiting piece, so that the lifting screw moves towards the free end of the accommodating barrel, and further stress is applied to the prestressed cable.
When the lifting screw moves, the pressure sensor and the displacement sensor collect stress and displacement changes of the prestressed cable when the prestressed cable is loaded, the stress measurement is taken as a main part, the displacement measurement is taken as an auxiliary part, when a preset limit value is reached, the sensor transmits a signal to the controller, the controller starts the alarm device and closes the motor, and the alarm device gives out audible and visual alarm.
After the prestressed cable reaches the preset stress limit value and the displacement limit value, the controller controls the electric clamp to be opened, the prestressed cable is drawn back, the wedge-shaped working clamping piece 63 between the prestressed cable and the anchorage device is self-locked and fixedly clamps the end of the prestressed cable to hold the load, and the prestressed automatic tensioning and anchoring device is taken down.
In the present embodiment, as shown in fig. 3 and 4, the same applies to a prestressed concrete member having a plurality of prestressed cables.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention according to the present application is not limited to the specific combination of the above-mentioned features, but also covers other embodiments where any combination of the above-mentioned features or their equivalents is made without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (8)
1. An automatic prestressed tension anchoring device, comprising:
the accommodating barrel is provided with a free end and a closed end for supporting against an anchorage device, the closed end is provided with a first through hole for a prestressed cable to penetrate through, a supporting partition plate is formed inside the accommodating barrel, the supporting partition plate is provided with a second through hole which is coaxial with the first through hole, a butt joint bin is formed between the supporting partition plate and the closed end, and an installation bin is formed between the supporting partition plate and the free end;
the traction structure comprises a lifting screw rod, an electric clamp and a limiting piece, wherein the lifting screw rod can penetrate through the second through hole in a movable mode along the axial direction of the second through hole, the electric clamp is used for clamping the prestressed cable, the first end of the lifting screw rod extends into the butt joint bin and is connected to the electric clamp, the limiting piece is provided with a threaded through hole, and the second end of the lifting screw rod extends into the installation bin and is screwed in the threaded through hole of the limiting piece;
the driving device is used for twisting the limiting piece and is arranged in the mounting bin; and
the controller is arranged in the mounting bin and connected to the electric clamp and the driving device;
a guide sleeve is formed in the mounting bin and is coaxial with the lifting screw rod, a sliding block is connected to the second end of the lifting screw rod, and the sliding block is slidably arranged in the guide sleeve;
the guide sleeve has a square inner bore, and the shape and size of the slider are adapted to the shape and size of the square inner bore.
2. The prestressed, automatic tension-tension anchoring device according to claim 1, wherein a limiting groove for the anchorage to be embedded is formed on the end surface of the closed end.
3. The pre-stressed automatic tension-anchoring device of claim 1, wherein the driving means comprises:
the torque wrench is occluded with the limiting piece; and
and the motor is arranged in the mounting bin and is in transmission connection with the torque wrench.
4. The pre-stressed automatic tension-anchor apparatus of claim 1, wherein an end of the second through-hole facing the free end is formed with a diameter-expanding hole, and the stopper is rotatably inserted into the diameter-expanding hole.
5. The prestressed, automatic tension-anchoring device according to claim 1, wherein a displacement sensor is mounted to a first end of said lifting screw, said displacement sensor being connected to said controller.
6. The prestressed automatic tension-anchoring apparatus according to claim 5, wherein the prestressed cable is installed with a pressure sensor for obtaining a stress value of the prestressed cable, and the pressure sensor is connected to the controller.
7. The prestressed, automatic tension-anchoring device according to claim 6, wherein an alarm device is connected to said controller.
8. A method of tensioning a prestressed automatic tensioning anchor device according to any one of claims 1 to 7, comprising the steps of:
supporting the closed end of the accommodating cylinder against an anchorage of a prestressed concrete member, so that a prestressed cable of the prestressed concrete member penetrates through the first through hole of the closed end and extends into a butt joint bin of the accommodating cylinder;
the controller starts an electric clamp of the traction structure to clamp the prestressed cable;
after the electric clamp clamps the prestressed cable, the controller starts the driving device, the driving device twists the limiting part of the traction structure, the limiting part abuts against one side, far away from the closed end, of the supporting partition plate of the containing barrel, and the pulling screw of the traction structure moves towards the free end of the containing barrel along the axial direction of the second through hole so as to stretch the prestressed cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110494009.2A CN113309361B (en) | 2021-05-07 | 2021-05-07 | Prestressed automatic tensioning anchoring equipment and tensioning method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110494009.2A CN113309361B (en) | 2021-05-07 | 2021-05-07 | Prestressed automatic tensioning anchoring equipment and tensioning method |
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| CN113309361A CN113309361A (en) | 2021-08-27 |
| CN113309361B true CN113309361B (en) | 2022-12-09 |
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| CN202110494009.2A Active CN113309361B (en) | 2021-05-07 | 2021-05-07 | Prestressed automatic tensioning anchoring equipment and tensioning method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113982194A (en) * | 2021-11-05 | 2022-01-28 | 衡阳市新德力交通材料有限公司 | Anchor for flat prestressed tendon |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089038U (en) * | 1990-11-14 | 1991-11-20 | 陕西省建筑科学研究设计院 | Numeric control prestressing wire drawing machine |
| JP2010007248A (en) * | 2008-06-24 | 2010-01-14 | Shimizu Corp | Prestress tension device and tensioning force control method using the same |
| CN107762157A (en) * | 2017-11-02 | 2018-03-06 | 顾开明 | A kind of electric screw stretching machine |
| CN109594721A (en) * | 2018-12-04 | 2019-04-09 | 东南大学 | A kind of prestressed FRP rebar pre-tensioning system stretch-draw anchor equipment |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862608B (en) * | 2016-05-20 | 2017-09-19 | 东南大学 | The automation tensioning system and method for a kind of pre-stress fibre plate reinforcing slab plate |
| CN208052257U (en) * | 2018-03-14 | 2018-11-06 | 福建森德工贸有限公司 | A kind of electric steel wire stretching device |
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2021
- 2021-05-07 CN CN202110494009.2A patent/CN113309361B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2089038U (en) * | 1990-11-14 | 1991-11-20 | 陕西省建筑科学研究设计院 | Numeric control prestressing wire drawing machine |
| JP2010007248A (en) * | 2008-06-24 | 2010-01-14 | Shimizu Corp | Prestress tension device and tensioning force control method using the same |
| CN107762157A (en) * | 2017-11-02 | 2018-03-06 | 顾开明 | A kind of electric screw stretching machine |
| CN109594721A (en) * | 2018-12-04 | 2019-04-09 | 东南大学 | A kind of prestressed FRP rebar pre-tensioning system stretch-draw anchor equipment |
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| CN113309361A (en) | 2021-08-27 |
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