CN212292489U - Hoisting device suitable for four-point hoisting of precast tubular pile - Google Patents
Hoisting device suitable for four-point hoisting of precast tubular pile Download PDFInfo
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- CN212292489U CN212292489U CN202021051702.XU CN202021051702U CN212292489U CN 212292489 U CN212292489 U CN 212292489U CN 202021051702 U CN202021051702 U CN 202021051702U CN 212292489 U CN212292489 U CN 212292489U
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Abstract
The utility model discloses a hoisting accessory suitable for four-point hoisting of precast tubular pile, it includes steelframe, lifting rope, hoist cable, rod iron and control system, the four corners of steelframe top respectively links firmly one end of a lifting rope, the middle part interval of steelframe installs two fixed pulleys, install a hoist cable on each fixed pulley, the both ends of hoist cable are connected respectively on the rod iron, wherein one end is located the inboard of precast tubular pile, the rod iron is used for wearing through the preformed hole of precast tubular pile, its both ends are located the outside of precast tubular pile, the rod iron sets up with the steelframe parallel; the control system comprises a control console, a wireless transmitter, two strain sensors and a high-precision real-time tilt angle sensor, wherein the control console is connected with the two strain sensors and the high-precision real-time tilt angle sensor through the wireless transmitter. The utility model discloses a hoisting accessory can solve that the tubular pile local stress that traditional two point hoist and mount arouses is too big, interim hoist and mount facility is huge and lift by crane and assemble the unable vertical problem of stable holding of in-process tubular pile.
Description
Technical Field
The utility model relates to a hoist and mount construction field, in particular to hoisting accessory suitable for precast tubular pile four-point lifts by crane, its specially adapted to the bridge stake integration substructure tubular pile that needs four-point to lift by crane.
Background
Due to the defects of serious environmental pollution, intensive labor force on construction sites, long construction period, large influence on traffic and the like in the traditional bridge construction, the assembly type construction technology is developed at the same time. Although the development of fabricated bridges in China began in the 90 s of the 20 th century, the introduction of national and local policies led to the strong development of fabricated construction technology in recent years. However, as the application range of the assembly technology in the bridge is larger and larger, the assembly technology is gradually developed from partial prefabrication to full prefabrication. The mode is prefabricated and processed in factories and then transported to the site for assembly. One of the important processes is the on-site hoisting and assembling of prefabricated parts, which is directly related to the safety of the construction process. At present, two-point hoisting is mostly adopted in engineering, namely three points are generally considered to be incapable of achieving the average distribution force, and four-point hoisting is not considered. However, to reduce the number of onsite splices, the prefabricated sections are often designed larger. Especially, the construction hoisting weight of the precast tubular pile with the pile-column integrated construction process is often over 100 tons. If the structure of wanting to hoist such big weight still adopts two points to lift by crane, then the local atress of tubular pile in hoisting point position department will grow, and the setting of interim hoist and mount facility also needs to be designed very powerful simultaneously, leads to the tubular pile prefabrication degree of difficulty to increase. And the positioning in the hoisting process is not facilitated, and the pipe pile needs to be stable and vertical particularly in the assembling process of the pipe pile.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a lifting device suitable for lifting a precast tubular pile at four points, so as to solve the problems of excessive local stress of the tubular pile, huge temporary lifting facilities, and incapability of stably and vertically lifting the tubular pile during the lifting and assembling process caused by the conventional two-point lifting.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a hoisting device suitable for four-point hoisting of a precast tubular pile is characterized in that one end of the precast tubular pile is provided with a preformed hole transversely penetrating through the wall of the precast tubular pile, and the axial direction of the preformed hole is perpendicular to the length direction of the precast tubular pile; the hoisting device comprises a steel frame, hoisting ropes, slings, a steel bar and a control system, wherein one end of each hoisting rope is fixedly connected to each of four corners of the top of the steel frame, the other end of each hoisting rope is used for being connected with a crane hook, two fixed pulleys are installed in the middle of the steel frame at intervals, wheel shafts of the two fixed pulleys are arranged in parallel, each fixed pulley is provided with one sling, two ends of each sling are respectively connected to the steel bar, one end of each sling is located on the inner side of the precast tubular pile, the steel bar is used for penetrating through a preformed hole of the precast tubular pile, two ends of each sling are located on the outer side of the precast tubular pile, and the steel;
the control system comprises a console, a wireless transmitter, two strain sensors and a high-precision real-time inclination angle sensor, wherein the console is wirelessly connected with the two strain sensors and the high-precision real-time inclination angle sensor through the wireless transmitter; the two strain sensors are respectively arranged on the steel bar and positioned between the joints of the two ends of each sling connecting the steel bar, and the high-precision real-time tilt angle sensor is arranged on the steel frame.
Preferably, the diameter of the fixed pulley is greater than the thickness of the pipe wall of the precast pipe pile, the two fixed pulleys have the same size, the lengths of the slings on the two fixed pulleys are the same, and the lengths of the four slings are the same.
Preferably, the fixed pulleys are positioned between the joints of the four lifting ropes and the steel frame.
Preferably, the steel frame comprises two longitudinal beams, two cross beams, four steel frame hanging points, two wheel shafts, two steel frame cross braces and two fixed pulleys, the two longitudinal beams and the two cross beams form a profile of the steel frame, the profile of the steel frame is of a rectangular structure, the top of each longitudinal beam is symmetrically provided with the two steel frame hanging points, the connecting lines of the four steel frame hanging points form the rectangular structure, each steel frame hanging point is connected with a hanging rope, the two wheel shafts are perpendicular to the length direction of the longitudinal beams, the two ends of each wheel shaft are respectively erected on the two longitudinal beams, the fixed pulley is installed in the middle of each wheel shaft, the distance between each wheel shaft and the nearest steel frame hanging point at the joint of the longitudinal beams is the same, the two steel frame cross braces are arranged between the two wheel shafts and are symmetrical about the center of the profile of the steel frame, and the two ends; and the wireless transmitter and the high-precision real-time tilt angle sensor on the steel frame are arranged on a longitudinal beam.
Preferably, the high-precision real-time tilt angle sensor is an HVT826T-Modbus output type high-precision double-shaft tilt angle sensor.
Compared with the prior art, the utility model discloses following beneficial effect has:
(1) the utility model provides a hoisting accessory suitable for precast tubular pile four-point lifts by crane, it divides original single-point power of lifting by crane into two parts on average ingeniously through the fixed pulley to two-point lifts by crane becomes four-point and lifts by crane, even make hoisting accessory can realize the requirement that four-point lifted by crane, make the four-point of precast tubular pile lift by crane the atress evenly; moreover, because the fixed pulley is adopted, the stress of the steel bar is changed from two points to four points, so that the sling force for lifting the steel bar at the two points is reduced by half, the local stress of the steel bar is reduced, and the requirement on the vertical degree of the tubular pile can be easily met; furthermore, the length of the lifting rope and the sling of the lifting device is manufactured by a factory, and the length and the quality of the lifting rope and the sling can be easily ensured.
(2) The utility model provides a hoisting accessory is provided with the strain sensor who is used for detecting the rod iron and lifts by crane the process strain condition to the tolerance of control rod iron, and the real-time inclination sensor detectable of high accuracy that sets up lifts by crane the levelness of process steelframe, and then detects the straightness that hangs down of precast tubular pile, consequently, use this hoisting accessory at precast tubular pile lifting by crane the in-process, not only can ensure hoisting accessory's safety, and can ensure the levelness of the in-process steelframe of lifting by crane in real time, thereby ensure the verticality of tubular pile.
Drawings
Fig. 1 is a schematic structural diagram of the lifting device of the present invention.
Fig. 2 is a view from a-a in fig. 1.
Description of the main elements
In the figure: the system comprises a crane hook 1, a lifting rope 2, a fixed pulley 3, a sling 4, a steel bar 5, a strain sensor 6, a wireless transmitter 7, a control console 8, a high-precision real-time tilt angle sensor 9, a steel frame lifting point 10, a steel frame cross brace 11, a wheel shaft 12, a cross beam 13, a steel frame 14, a longitudinal beam 15 and a precast tubular pile 16.
The following detailed description of the invention will be further described in conjunction with the above-identified drawings.
Detailed Description
Referring to fig. 1-2, in a preferred embodiment of the present invention, a hoisting device suitable for hoisting precast tubular piles at four points is designed based on the following precast tubular piles 16: preformed hole that transversely runs through its pipe wall is seted up to preformed pipe pile 16's one end, the axial perpendicular to preformed pipe pile 16's of preformed hole length direction.
The lifting device comprises a steel frame 14, four lifting ropes 2, four lifting ropes 4, a steel bar 5 and a control system. Four corners of the top of the steel frame 14 are fixedly connected with one end of a lifting rope 2, the other end of the lifting rope 2 is used for connecting a crane lifting hook 1, two fixed pulleys 3 are installed in the middle of the steel frame 14 at intervals, wheel shafts 12 of the two fixed pulleys 3 are arranged in parallel, each fixed pulley 3 is provided with a sling 4, two ends of each sling 4 are connected to a steel bar 5 respectively, one end of each sling 4 is located on the inner side of the precast tubular pile 16, the steel bars 5 are used for penetrating preformed holes of the precast tubular piles 16, two ends of each steel bar are located on the outer sides of the precast tubular piles 16, the steel bars 5 are arranged in parallel with the steel frame 14, and preferably, the steel bars 5 are solid steel bars 5 which transmit the weight of the precast tubular piles 16 to the slings 4; that is, the utility model discloses a fixed pulley 3 and hoist cable 4 make 5 one end atresss of bar steel become two points from a bit, and because fixed pulley 3's effect, can make two point's atresss even, and this application adopts two fixed pulleys 3, this just makes precast tubular pile 16 bar steel 5 be four point atresss when lifting by crane, and the atress is even, single-point atress is little when every point atress and original 5 point's atresss of bar steel, fall to half of original single-point atress, this just makes the local atress of bar steel 5 reduce, lift by crane more easily and easily satisfy the requirement of 16 verticality of precast tubular pile. Referring to fig. 2, in the present embodiment, the steel frame 14 includes two longitudinal beams, two cross beams 13, four steel frame suspension points 10, two axles 12, two steel frame crossbars 11, and two fixed pulleys 3, the two longitudinal beams and the two cross beams 13 form a profile of the steel frame 14, which is also a weighing system of the steel frame 14, the profile of the steel frame 14 is a rectangular structure, two steel frame suspension points 10 are symmetrically disposed at the top of each longitudinal beam, a connection line of the four steel frame suspension points 10 forms a rectangular structure, the connection line of the two diagonal steel frame suspension points 10 passes through the center of the profile of the steel frame 14, each steel frame suspension point 10 is connected to one lifting rope 2, the two axles 12 are disposed perpendicular to the longitudinal beam in the length direction, two ends of each axle are respectively mounted on the two longitudinal beams, a fixed pulley 3 is mounted in the middle of each axle 12, the force borne by the fixed pulley 3 is transmitted to the steel, the distance between each wheel axle 12 and the nearest steel frame hanging point 10 at the joint of the longitudinal beam is the same, the two steel frame cross braces 11 are arranged in a crossed mode and are located between the two wheel axles 12 and are symmetrical with respect to the outline center of the steel frame 14, two ends of each steel frame cross brace 11 are fixedly connected to the two longitudinal beams, and the steel frame cross braces 11 are used for improving the stability of the whole steel frame 14. Preferably, the diameter of the fixed pulleys 3 is larger than the thickness of the pipe wall of the precast pipe pile 16, the two fixed pulleys 3 have the same size, the lengths of the slings 4 on the two fixed pulleys 3 are the same, and the lengths of the four slings 2 are the same; the fixed pulleys 3 are positioned between the joints of the four lifting ropes 2 and the steel frame 14, and the two fixed pulleys 3 are positioned on the same plane.
The control system comprises a console 8, a wireless transmitter 7, two strain sensors 6 and a high-precision real-time inclination angle sensor 9, wherein the console 8 is wirelessly connected with the two strain sensors 6 and the high-precision real-time inclination angle sensor 9 through the wireless transmitter 7, the wireless transmitter 7 is installed on a steel bar 5 and a steel frame 14, the wireless transmitter 7 on the steel bar 5 is connected with the two strain sensors 6, the wireless transmitter 7 on the steel frame 14 is connected with the high-precision real-time inclination angle sensor 9, and the wireless transmitter 7 is used for transmitting data generated by the strain sensors 6 and the high-precision real-time inclination angle sensor 9 to the console 8 through Wifi; the two strain sensors 6 are respectively arranged on the steel bar 5 and positioned between the joints of two ends of each sling 4 connected with the steel bar 5, specifically, the two strain sensors are arranged at the positions where the bending stress of the steel bar 5 is maximum, and are used for detecting the strain condition of the steel bar 5 in the hoisting process and transmitting the strain data to the console 8 through the wireless transmitter 7 connected with the strain sensors, and the console 8 acquires the deformation condition of the steel bar 5 in the hoisting process by monitoring the real-time strain data so as to timely replace the steel bar 5 when the strain data exceeds a reasonable range, thereby improving the use safety of the device and the safety of the hoisting process; high accuracy real-time tilt angle sensor 9 installs on steelframe 14, and it is used for detecting the inclination state of lifting by crane process steelframe 14 to give control cabinet 8 with inclination data transmission through wireless transmitter 7 rather than being connected, control cabinet 8 learns the levelness that steelframe 14 lifted by crane the process through monitoring real-time inclination data, thereby learns the vertical degree of precast tubular pile 16, and the length of adjusting hoist cable 4 is not in reasonable scope as inclination data, thereby guarantees the vertical degree of precast tubular pile 16. Preferably, in the embodiment, the wireless transmitter 7 and the high-precision real-time tilt sensor 9 on the steel frame 14 are mounted on a longitudinal beam; the high-precision real-time tilt angle sensor 9 adopts an HVT826T-Modbus output type high-precision double-shaft tilt angle sensor 9, can simultaneously measure the tilt angles of two shafts, and can ensure the integral levelness and precision of a steel frame 14 plane during lifting: 0.007 °, power-on start time: 0.2s, response time: 0.01 s.
Based on above-mentioned hoisting accessory, the utility model provides a control method suitable for precast tubular pile four-point lifts by crane, and this control method uses foretell hoisting accessory suitable for precast tubular pile four-point lifts by crane, specifically includes following step:
(1) after the precast tubular pile 16 is transported to the site, the precast tubular pile 16 meets the hoisting posture;
(2) assembling a steel frame 14, a lifting rope 2 and a sling 4 of the lifting device, and hanging the lifting rope 2 on a crane hook 1;
(3) installing the two strain sensors 6 and a wireless transmitter 7 at corresponding positions of the steel bar 5, enabling the steel bar 5 to penetrate through a preformed hole of the precast tubular pile 16 and penetrate through the sling 4 in the penetrating process, and enabling the sling 4 to be connected with the steel bar 5;
(4) installing a high-precision real-time tilt angle sensor 9 and another wireless transmitter 7 at corresponding positions on the top of a steel frame 14;
(5) turning on all power supplies of the wireless transmitter 7 and the console 8, and starting to collect data after zero clearing until the console 8 has normal data;
(6) slowly hoisting the precast tubular pile 16 by using a crane, so that the precast tubular pile 16 is converted into a vertical state from a horizontal state, detecting the strain condition of the steel bar 5 in real time by using a strain sensor 6 in the whole conversion process, transmitting the detected strain data to a control console 8 by using a wireless transmitter 7 connected with the strain sensor, observing the strain data in real time by using the control console 8, and enabling the strain data to be in a reasonable range;
(7) after the precast tubular pile 16 is completely vertical, the crane lifts the lower edge of the precast tubular pile 16 off the ground by 5cm and keeps for a period of time, meanwhile, the strain sensor 6 continuously detects the strain condition of the steel bar 5 in real time, the high-precision real-time inclination angle sensor 9 detects the inclination angle condition of the steel frame 14 in real time, the strain sensor 6 and the high-precision real-time inclination angle sensor 9 transmit data to the control console 8 through the wireless transmitter 7, the control console 8 observes the strain data and the inclination angle data in real time, and the formal lifting is started after the strain data and the inclination angle data are in a reasonable range.
Preferably, in the step (7), if the strain data exceeds a reasonable range, the hoisting is stopped, and the precast tubular pile 16 is put down and then a new steel bar 5 with better bearing capacity is searched again, which indicates that the steel bar 5 cannot bear the hoisting and the steel bar 5 with better bearing capacity needs to be replaced; and if the inclination angle data is not in the allowed range, stopping hoisting, putting the prefabricated pipe pile down, and readjusting the lengths of the four lifting ropes 2.
The above description is for the detailed description of the preferred possible embodiments of the present invention, but the embodiments are not intended to limit the scope of the present invention, and all equivalent changes or modifications accomplished under the technical spirit suggested by the present invention should fall within the scope of the present invention.
Claims (5)
1. A hoisting device suitable for four-point hoisting of a precast tubular pile is characterized in that one end of the precast tubular pile is provided with a preformed hole transversely penetrating through the wall of the precast tubular pile, and the axial direction of the preformed hole is perpendicular to the length direction of the precast tubular pile; the method is characterized in that: the hoisting device comprises a steel frame, hoisting ropes, slings, a steel bar and a control system, wherein one end of each hoisting rope is fixedly connected to each of four corners of the top of the steel frame, the other end of each hoisting rope is used for being connected with a crane hook, two fixed pulleys are installed in the middle of the steel frame at intervals, wheel shafts of the two fixed pulleys are arranged in parallel, each fixed pulley is provided with one sling, two ends of each sling are respectively connected to the steel bar, one end of each sling is located on the inner side of the precast tubular pile, the steel bar is used for penetrating through a preformed hole of the precast tubular pile, two ends of each sling are located on the outer side of the precast tubular pile, and the steel;
the control system comprises a console, a wireless transmitter, two strain sensors and a high-precision real-time inclination angle sensor, wherein the console is wirelessly connected with the two strain sensors and the high-precision real-time inclination angle sensor through the wireless transmitter; the two strain sensors are respectively arranged on the steel bar and positioned between the joints of the two ends of each sling connecting the steel bar, and the high-precision real-time tilt angle sensor is arranged on the steel frame.
2. The hoisting device suitable for four-point hoisting of the precast tubular pile according to claim 1, characterized in that: the diameter of the fixed pulley is greater than the thickness of the pipe wall of the precast pipe pile, the two fixed pulleys are the same in size, the lengths of slings on the two fixed pulleys are the same, and the lengths of the four slings are the same.
3. The hoisting device suitable for four-point hoisting of the precast tubular pile according to claim 1, characterized in that: the fixed pulleys are positioned between the joints of the four lifting ropes and the steel frame.
4. The hoisting device suitable for four-point hoisting of the precast tubular pile according to claim 1, characterized in that: the steel frame comprises two longitudinal beams, two cross beams, four steel frame hanging points, two wheel shafts, two steel frame cross braces and two fixed pulleys, the two longitudinal beams and the two cross beams form the outline of the steel frame, the outline of the steel frame is of a rectangular structure, the top of each longitudinal beam is symmetrically provided with the two steel frame hanging points, the connecting lines of the four steel frame hanging points form the rectangular structure, each steel frame hanging point is connected with a hanging rope, the two wheel shafts are arranged perpendicular to the length direction of the longitudinal beams, the two ends of each wheel shaft are respectively erected on the two longitudinal beams, the middle part of each wheel shaft is provided with one fixed pulley, the distance between the connecting part of each wheel shaft and the longitudinal beam and the nearest steel frame hanging point is the same, the two steel frame cross braces are arranged between the two wheel shafts and are symmetrical relative to the outline center of the steel frame, and; and the wireless transmitter and the high-precision real-time tilt angle sensor on the steel frame are arranged on a longitudinal beam.
5. The hoisting device suitable for four-point hoisting of the precast tubular pile according to claim 1, characterized in that: the high-precision real-time tilt angle sensor adopts an HVT826T-Modbus output type high-precision double-shaft tilt angle sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051702.XU CN212292489U (en) | 2020-06-10 | 2020-06-10 | Hoisting device suitable for four-point hoisting of precast tubular pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021051702.XU CN212292489U (en) | 2020-06-10 | 2020-06-10 | Hoisting device suitable for four-point hoisting of precast tubular pile |
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| Publication Number | Publication Date |
|---|---|
| CN212292489U true CN212292489U (en) | 2021-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021051702.XU Active CN212292489U (en) | 2020-06-10 | 2020-06-10 | Hoisting device suitable for four-point hoisting of precast tubular pile |
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| Country | Link |
|---|---|
| CN (1) | CN212292489U (en) |
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2020
- 2020-06-10 CN CN202021051702.XU patent/CN212292489U/en active Active
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