CN218932898U - Convenient hogging moment stretch-draw platform - Google Patents
Convenient hogging moment stretch-draw platform Download PDFInfo
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- CN218932898U CN218932898U CN202223246805.3U CN202223246805U CN218932898U CN 218932898 U CN218932898 U CN 218932898U CN 202223246805 U CN202223246805 U CN 202223246805U CN 218932898 U CN218932898 U CN 218932898U
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- jack
- lifting
- support frame
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- pump station
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Abstract
The patent discloses a convenient hogging moment stretch-draw platform, it includes: the support frame, be equipped with the stretch-draw host computer on the support frame, the one end of support frame is equipped with fixed frame, and fixed frame is connected with elevating gear, and elevating gear is connected with the jack, and elevating gear is equipped with lift drive arrangement, and the stretch-draw host computer includes controlling means and pump station, and the pump station passes through the control valve and connects the jack, and the control valve is connected controlling means. The jack is convenient to reach the bottom of the beam flange plate through the wet joint, so that constructors can conveniently install the jack in a narrow space, and the tensioning operation of the steel strand is performed.
Description
Technical Field
The utility model relates to an auxiliary instrument for construction, in particular to a convenient hogging moment tensioning platform.
Background
Before the engineering structural member bears external load, pre-stressing is applied to the steel strands in the tension module to enable the steel strands to generate certain deformation, so that the load borne by the structure is dealt with, the bending resistance and rigidity of the member are improved, the occurrence time of cracks is delayed, and the durability of the member is improved. The prestress anchoring device for the hogging moment area of the beam is usually arranged on the top surface of the beam, and the tensioning operation of the prestress anchoring device adopts devices such as a jack, an anchor, a clamp and the like, so that the operation is more convenient. However, the prestress anchoring device in the hogging moment area of the current beam is arranged at the bottom of the beam flange plate, and the existing equipment is very inconvenient to place and operate the jack under the beam surface, so that the construction difficulty of operators is increased, the safety risk is high, and the construction progress is greatly influenced.
Disclosure of Invention
The utility model aims to provide a convenient hogging moment tensioning platform which can solve the problem that a jack is inconvenient to place and operate in the prior art.
The utility model comprises the following steps: the support frame, be equipped with the stretch-draw host computer on the support frame, the one end of support frame is equipped with fixed frame, and fixed frame is connected with elevating gear, and elevating gear is connected with the jack, and elevating gear is equipped with lift drive arrangement, and the stretch-draw host computer includes controlling means and pump station, and the pump station passes through the control valve and connects the jack, and the control valve is connected controlling means.
The other end of the supporting frame is provided with a buckle.
And a traction rope is arranged between the support frame and the buckle.
The lifting device includes: the uide bushing is equipped with the lifter in the uide bushing, and lift drive includes: and the traction block is arranged on the fixed frame and is clamped with a chain block, and a lifting chain of the chain block is connected with the lifting plate.
The lifting device includes: the uide bushing is equipped with the lifter in the uide bushing, is equipped with the rack on the lifter, and lift drive arrangement includes: and the lifting driving motor is connected with a climbing gear which is meshed with the rack.
The elevating gear is the lift pneumatic cylinder, and elevating drive unit includes: and the lifting control valve is connected with the pump station.
The control device is connected with a pressure sensor and a displacement sensor.
The pressure sensor is positioned in a pipeline connected with the pump station and the jack; or the displacement sensor is positioned on the jack; or the pressure sensor is positioned in a pipeline connected with the pump station and the jack, and the displacement sensor is positioned on the jack.
The support frame is provided with wheels.
The bottom of the lifting device is connected with a lifting plate, a jack is connected to the lifting plate, and the jack is movably connected with the lifting plate.
According to the utility model, the lifting device is arranged at the front end frame of the support frame and is connected with the jack, so that the jack can conveniently reach the bottom of the beam flange plate through the wet joint, and constructors can conveniently install the jack in a narrow space and perform tensioning operation of the steel strand. Secondly, the support frame is provided with a group of wheels so as to conveniently move the whole platform to change positions. And thirdly, the control device is connected with a pressure sensor and a displacement sensor, and detects tensioning parameters in real time so as to accurately control tensioning stress. Fourth, the support bar at the rear end of the support frame is provided with a traction rope and a buckle, and the buckle is used for being hung on a steel bar of a wet joint to ensure that the support frame body is balanced and stable in the tensioning process. Fifthly, the jack is movably connected with the lifting plate, so that the position of the jack can be conveniently adjusted according to the site situation, and the tensioning operation is further facilitated.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model, and fig. 2 is a right side view of fig. 1.
Reference numerals in the drawings: 1. the device comprises a support frame, 2, a host machine support, 3, a tensioning host machine, 4, a fixed frame, 5, lifting rods, 6, lifting plates, 7, jacks, 8, traction blocks, 9, chain blocks, 10, lifting chains, 11, guide sleeves, 12, connecting frames, 13, wheels, 14, slotted holes, 15, traction ropes, 16 and buckles.
Detailed Description
Embodiment 1 of the present utility model as shown in fig. 1 and 2 includes: the support frame 1, support frame 1 pass through link 12 swing joint wheel 13. The tensioning host 3 is arranged in the host bracket 2 on the support frame 1, a fixed frame 4 is arranged at one end of the support frame 1, a buckle 16 is arranged at the other end of the support frame 1, a traction rope 15 is arranged between the support frame 1 and the buckle 16, and the traction rope 15 is convenient for adjusting the fixed position. The fixed frame 4 is connected with a lifting device, the lifting device is provided with a lifting driving device, and the lifting device is connected with a jack 7. The tensioning host 3 comprises a control device and a pump station, the pump station is connected with the jack 7 through a control valve, the control valve is connected with the control device, and the control device is connected with a pressure sensor and a displacement sensor. The pressure sensor is located in the pipeline where the pump station is connected to the jack 7 and is used to measure the oil pressure in the pipeline. The displacement sensor is a magnetostrictive displacement sensor, the fixed end of the displacement sensor is connected to the cylinder body of the jack 7, the movable end of the displacement sensor is connected to the piston rod of the jack 7, and the displacement sensor is used for measuring the expansion and contraction amount of the jack 7. The control device adjusts the opening and closing of the control valve in real time through the detected pressure value and displacement, and further realizes accurate tensioning of the steel strand in the hogging moment area.
The lifting device comprises: the lifting rod 5 is sleeved in the guide sleeve 11, and the lifting rod 5 can slide up and down along the guide sleeve 11. The lifter plate 6 is connected to the bottom of lifter 5, and lifter plate 6 is equipped with the slot, and the cylinder body both sides of jack 7 are equipped with the slide respectively, and the slide card slides in the slot, still is connected with locking bolt on the cylinder body of jack 7, thereby when jack adjustment is put in place, with locking bolt unscrew jack on lifter plate 6 thereby locking jack 7's position. The lift driving device includes: the traction block 8 is arranged on the fixed frame 4, a slotted hole 14 matched with the chain block 9 is arranged on the traction block 8, the main body of the chain block 9 is hung in the slotted hole 14, and the lifting chain 10 of the chain block 9 is connected with the lifting plate. The constructor realizes the extension and retraction of the lifting chain 10 by pulling the manual chain, thereby driving the lifting plate 6 to lift, and further enabling the lifting plate 6 to drive the jack 7 to drop below the bottom surface of the beam flange plate during tensioning operation.
Embodiment 2 of the present utility model includes: the support frame is movably connected with the wheels through the connecting frame. The stretching host is arranged in the host bracket on the supporting frame, a fixing frame is arranged at one end of the supporting frame, a buckle is arranged at the other end of the supporting frame, a traction rope is arranged between the supporting frame and the buckle, and the traction rope is convenient to adjust the fixing position. The fixed frame is connected with a lifting device, the lifting device is provided with a lifting driving device, and the lifting device is connected with a jack. The tensioning host comprises a control device and a pump station, the pump station is connected with the jack through a control valve, the control valve is connected with the control device, the control device is connected with a pressure sensor and a displacement sensor, the support frame is provided with the tensioning host, one end of the support frame is provided with a fixed frame, the fixed frame is connected with a telescopic rod, the bottom end of the telescopic rod is connected with a lifting plate, the lifting plate is movably connected with the jack, the lifting plate is provided with a lifting driving device, the tensioning host comprises a control device and the pump station, the pump station is connected with the jack through the control valve, the control valve is connected with the control device, and the control device is connected with the pressure sensor and the displacement sensor. The pressure sensor is positioned in a pipeline connected with the pump station and the jack, and is used for measuring the oil pressure in the pipeline. The displacement sensor is a magnetostrictive displacement sensor, the fixed end of the displacement sensor is connected to the cylinder body of the jack, the movable end of the displacement sensor is connected to the piston rod of the jack, and the displacement sensor is used for measuring the expansion and contraction amount of the jack. The control device adjusts the opening and closing of the control valve in real time through the detected pressure value and displacement, and further realizes accurate tensioning of the steel strand in the hogging moment area.
The lifting device comprises: the guide sleeve is sleeved with a lifting rod, a rack is arranged on the lifting rod, and the lifting rod can slide up and down along the guide sleeve. The lifting plate is connected to the bottom of lifter, and the lifter is equipped with the slot, and the cylinder body both sides of jack are equipped with the slide respectively, and the slide card slides in the slot, still is connected with locking bolt on the cylinder body of jack, thereby the jack is adjusted in place after, with locking bolt unscrewing jack on the lifter position locking jack. The lift driving device includes: and the lifting driving motor is connected with a climbing gear which is meshed with the rack. The lifting driving motor rotates to drive the climbing gear, and the climbing gear is meshed with the rack on the lifting rod, so that the lifting plate is driven to lift, and the lifting plate drives the jack to fall below the bottom surface of the beam flange plate during tensioning operation.
Embodiment 3 of the present utility model includes: the support frame is movably connected with the wheels through the connecting frame. The stretching host is arranged in the host bracket on the supporting frame, a fixing frame is arranged at one end of the supporting frame, a buckle is arranged at the other end of the supporting frame, a traction rope is arranged between the supporting frame and the buckle, and the traction rope is convenient to adjust the fixing position. The fixed frame is connected with a lifting device, the lifting device is provided with a lifting driving device, and the lifting device is connected with a jack. The tensioning host comprises a control device and a pump station, the pump station is connected with the jack through a control valve, the control valve is connected with the control device, the control device is connected with a pressure sensor and a displacement sensor, the support frame is provided with the tensioning host, one end of the support frame is provided with a fixed frame, the fixed frame is connected with a telescopic rod, the bottom end of the telescopic rod is connected with a lifting plate, the lifting plate is movably connected with the jack, the lifting plate is provided with a lifting driving device, the tensioning host comprises a control device and the pump station, the pump station is connected with the jack through the control valve, the control valve is connected with the control device, and the control device is connected with the pressure sensor and the displacement sensor. The pressure sensor is positioned in a pipeline connected with the pump station and the jack, and is used for measuring the oil pressure in the pipeline. The displacement sensor is a magnetostrictive displacement sensor, the fixed end of the displacement sensor is connected to the cylinder body of the jack, the movable end of the displacement sensor is connected to the piston rod of the jack, and the displacement sensor is used for measuring the expansion and contraction amount of the jack. The control device adjusts the opening and closing of the control valve in real time through the detected pressure value and displacement, and further realizes accurate tensioning of the steel strand in the hogging moment area.
The lifting device is a lifting hydraulic cylinder. The lifting plate is connected to the bottom of lifter, and the lifter is equipped with the slot, and the cylinder body both sides of jack are equipped with the slide respectively, and the slide card slides in the slot, still is connected with locking bolt on the cylinder body of jack, thereby the jack is adjusted in place after, with locking bolt unscrewing jack on the lifter position locking jack. The lift driving device includes: and the lifting control valve is connected with the pump station. The lifting control valve controls the lifting hydraulic cylinder to control the lifting of the lifting rod, so that the lifting plate drives the jack to fall below the bottom surface of the beam flange plate during tensioning operation.
Before tensioning, the utility model is arranged at the wet joint of the beam surface and the buckle is fixed on the wet joint steel bar of the bridge, then the lifting device is driven to stretch and retract by the lifting driving device, then the jack is lowered below the bottom surface of the beam flange plate by the wet joint, then the jack is started by the tensioning host machine to carry out hogging moment tensioning construction, then the fixation of the jack and the steel strand is released, the jack is in situ by the lifting driving device, the buckle at the tail part of the support frame is released, and the tensioning platform can be moved to the next tensioning position for construction.
The above examples merely represent a few embodiments of the present utility model and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the utility model, which are within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A portable negative moment tensioning platform comprising: the support frame, its characterized in that is equipped with the stretch-draw host computer on the support frame, the one end of support frame is equipped with fixed frame, and fixed frame is connected with elevating gear, and elevating gear is connected with the jack, and elevating gear is equipped with lift drive arrangement, and the stretch-draw host computer includes controlling means and pump station, and the pump station passes through the control valve and connects the jack, and the control valve is connected controlling means.
2. The portable hogging moment tensioning platform of claim 1, wherein the other end of the support frame is provided with a buckle.
3. The portable hogging moment tensioning platform of claim 2, wherein a traction rope is arranged between the support frame and the buckle.
4. A portable hogging moment tensioning platform according to claim 1, 2 or 3, wherein the lifting means comprises: the uide bushing is equipped with the lifter in the uide bushing, and lift drive includes: and the traction block is arranged on the fixed frame and is clamped with a chain block, and a lifting chain of the chain block is connected with the lifting plate.
5. A portable hogging moment tensioning platform according to claim 1, 2 or 3, wherein the lifting means comprises: the uide bushing is equipped with the lifter in the uide bushing, is equipped with the rack on the lifter, and lift drive arrangement includes: and the lifting driving motor is connected with a climbing gear which is meshed with the rack.
6. A portable hogging moment tensioning platform according to claim 1, 2 or 3, wherein the lifting means is a lifting hydraulic cylinder and the lifting drive means comprises: and the lifting control valve is connected with the pump station.
7. A portable negative moment tension platform according to claim 1, 2 or 3, wherein the control device is connected with a pressure sensor and a displacement sensor.
8. A portable negative moment tensioning platform according to claim 7, wherein the pressure sensor is located in a pipeline connecting the pump station to the jack; or the displacement sensor is positioned on the jack; or the pressure sensor is positioned in a pipeline connected with the pump station and the jack, and the displacement sensor is positioned on the jack.
9. A portable negative moment tension platform as claimed in claim 1, 2 or 3 wherein the support frame is provided with wheels.
10. A portable hogging moment tensioning platform according to claim 1, 2 or 3 wherein the bottom of the lifting means is connected to a lifting plate, the lifting plate being connected to a jack, the jack being movably connected to the lifting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246805.3U CN218932898U (en) | 2022-12-05 | 2022-12-05 | Convenient hogging moment stretch-draw platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223246805.3U CN218932898U (en) | 2022-12-05 | 2022-12-05 | Convenient hogging moment stretch-draw platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218932898U true CN218932898U (en) | 2023-04-28 |
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ID=86063638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223246805.3U Active CN218932898U (en) | 2022-12-05 | 2022-12-05 | Convenient hogging moment stretch-draw platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218932898U (en) |
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2022
- 2022-12-05 CN CN202223246805.3U patent/CN218932898U/en active Active
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