CN117071560A - Positioning and supporting device for construction of prefabricated pipe piles - Google Patents

Abstract

The invention provides a positioning and supporting device for construction of a precast tubular pile, which relates to the technical field of pile foundation construction and comprises the following components: the lifting mechanism comprises a portal frame, a lifting cross beam is arranged in the portal frame, and a lifting hook is arranged at the bottom of the lifting cross beam; the clamping assembly comprises two clamping vertical rods, clamping blocks are arranged at the lower ends of the clamping vertical rods, lifting connecting rods are connected to the tops of the clamping vertical rods, and the two lifting connecting rods are rotatably arranged on the connecting rotating shafts; and the lifting assembly is arranged on the working platform and is connected with the connecting rotating shaft. The device can realize self-adaptive clamping and fixing according to the diameters of different tubular piles, thereby ensuring the stability of tubular pile construction and positioning, greatly improving the working efficiency and positioning precision of tubular pile positioning construction, and having simple operation and convenient use.

Description

Positioning and supporting device for construction of prefabricated pipe piles

Technical Field

The invention belongs to the technical field of pile foundation construction, and particularly relates to a positioning and supporting device for precast tubular pile construction.

Background

Along with the continuous promotion of the building industry level, the precast tubular pile is widely applied, and the pile foundation has high bearing capacity, can bear vertical load and horizontal load, can resist the pull-up load and also can bear vibration load, and is the most widely applied deep foundation form. The construction quality of the pile foundation plays a vital role in the safety and stability of the upper structure, and the pile position deviation and the pile body perpendicularity in the construction process can have an important influence on the overall quality of the engineering, so that the control of the position deviation and the perpendicularity deviation in the horizontal plane is a key element in the construction process of the pile foundation in the construction process of the precast tubular pile.

The prior traditional pile foundation positioning usually adopts an instrument to measure the central position of a pile foundation, marks are made, then a pile is lifted, in the pile driving operation process, a worker mainly observes and controls the position of a pile body, and the pile body is lifted through an upper lifting point, so that the position of the pile body is adjusted, and as the pile body is lifted, only one fixed point is arranged at the upper part of the pile body, the lower part of the pile body is always in a free swinging state, so that the plane position of the pile body and the perpendicularity of the pile body are extremely difficult to adjust, the construction experience and the technical level requirements of operators are higher, the plane position deviation and the pile body perpendicularity of a pile are usually determined by the technical level and the responsibility center of the worker, the construction quality and the precision are difficult to control, the pile position deviation is easy to be overlarge, and the like, and the pile body is not in line with the standard behavior, and the great economic loss and the construction period loss are caused.

Disclosure of Invention

The embodiment of the invention aims to provide a positioning and supporting device for construction of a precast tubular pile, and aims to solve the problems in the prior art.

The embodiment of the invention is realized in such a way that the prefabricated pipe pile construction positioning and supporting device comprises a working platform, wherein a moving mechanism is arranged at the bottom of the working platform, and the working platform is rotatably arranged on the moving mechanism, and the device further comprises:

the hoisting mechanism comprises a portal frame arranged on a working platform, a hoisting cross beam is arranged in the portal frame in a sliding manner along the vertical direction, a hoisting station (groove-shaped) is formed in the vertical projection area of the hoisting cross beam by the working platform, and a lifting hook is arranged at the bottom of the hoisting cross beam;

the clamping assembly is used for adaptively clamping the tubular pile hoisted at the lifting hook, the clamping assembly comprises two clamping vertical rods symmetrically arranged in the hoisting cross beam, the clamping vertical rods are slidably arranged in the hoisting cross beam along the horizontal direction, the two clamping vertical rods are connected with the inside of the hoisting cross beam through elastic reset elements, the lower ends of the two clamping vertical rods are respectively provided with a clamping block, the two clamping blocks are relatively arranged on the clamping vertical rods, the tops of the two clamping vertical rods are respectively connected with a hoisting connecting rod in a rotating mode, and one ends, far away from the clamping vertical rods, of the two hoisting connecting rods are respectively rotatably arranged on a connecting rotating shaft; and

the lifting assembly is installed on the working platform and connected with the connecting rotating shaft, and is used for driving the clamping assembly to adaptively clamp the side wall of the pipe pile and synchronously driving the lifting cross beam to install and position the clamped pipe pile.

According to a further technical scheme, guide rollers are rotatably mounted on two sides of the hoisting cross beam, and guide sliding grooves for the guide rollers to linearly slide in the vertical direction are formed in the portal frame.

According to a further technical scheme, the elastic reset element can be a reset spring or an elastic telescopic rod, and when the device is in a free state, the elastic reset force of the elastic reset element can maximize the distance between the two clamping upright rods.

Further technical scheme, lifting by crane the subassembly including installing the wind-up roll on work platform, the wind-up roll is connected with driving motor, drives the wind-up roll through driving motor and rotates, the rolling has the receipts rope on the wind-up roll, the fixed pulley is installed at the top of portal frame, just the winding rope winds the fixed pulley and is connected with the connection pivot.

According to a further technical scheme, the connecting rotating shaft is provided with the hanging ring, and one end of the winding rope is connected with the connecting rotating shaft through the hanging ring.

Further technical scheme, work platform's bottom still is provided with the auxiliary stay subassembly that is used for carrying out auxiliary stay to work platform, just four supplementary stay subassemblies of group are installed to work platform's bottom pairwise symmetry.

Further technical scheme, auxiliary stay subassembly is including rotating backup pad and the first telescopic element of installing on work platform diapire, just the expansion end of first telescopic element is connected with the lateral wall of backup pad, the second telescopic element is installed to the free end of backup pad, the bottom of second telescopic element is connected with the support chassis.

According to a further technical scheme, the first telescopic element and the second telescopic element are hydraulic telescopic rods.

According to a further technical scheme, the moving mechanism adopts a crawler-type moving mechanism with high bearing capacity.

Another object of the embodiments of the present invention is to provide a method for positioning a prefabricated pipe pile, based on the above-mentioned device for positioning and supporting the prefabricated pipe pile, which includes the following specific steps:

step 1, driving a second telescopic element to rotate through telescopic movement of the first telescopic element, so that the second telescopic element is adjusted to a designated position, and then enabling a supporting chassis to be in stable contact with the ground through controlling the telescopic amount of the second telescopic element, so that a working platform is stably supported;

step 2, lowering a hoisting beam to a specified height through a hoisting assembly, hoisting a tubular pile at a hoisting station on a lifting hook, driving a winding roller to wind a winding rope through a driving motor, driving a connecting rotating shaft to move upwards through a lifting ring by the winding rope, driving two clamping vertical rods to move in opposite directions simultaneously through a hoisting connecting rod by the connecting rotating shaft, and driving two clamping blocks to be close to each other by the clamping vertical rods so as to clamp the side wall of the tubular pile to be hoisted;

step 3, after the side wall of the pipe pile is clamped and fixed, the clamping upright rod drives the lifting beam to integrally move upwards, the lifting beam drives the pipe pile to synchronously rise through the lifting hook, so that the lifting of the pipe pile can be realized, and then the pipe pile is moved to a designated mounting position for lowering;

and 4, after the pipe pile is lowered in place, the hoisting cross beam does not move downwards under the supporting action of the pipe pile, and at the moment, the elastic reset element can drive the clamping upright rod to slide to one side far away from the pipe pile along with the continuous unreeling of the reeling rope, and the clamping upright rod drives the clamping block to be automatically separated from the pipe pile, so that the positioning and the installation of the pipe pile are completed.

Advantageous effects

According to the prefabricated pipe pile construction positioning and supporting device provided by the embodiment of the invention, the lifting beam is firstly lowered to the designated height through the lifting assembly, then the top of the pipe pile is lifted on the lifting hook, and then the pipe pile is lifted through the lifting assembly. After the side wall of the pipe pile is clamped and fixed, the clamping upright rod can drive the lifting beam to integrally move upwards, and the lifting beam drives the pipe pile to synchronously rise through the lifting hook, so that the lifting of the pipe pile can be realized. In the process of lowering the pipe pile, the clamping assembly can always keep a stable clamping state due to the gravity action of the pipe pile, so that the pipe pile is prevented from swinging when the pipe pile is positioned and installed. In the process of lowering the pipe pile, the clamping assembly can always maintain a stable clamping state due to the gravity action of the pipe pile, so that the pipe pile can not swing when being positioned and installed, and the working efficiency and positioning accuracy of pipe pile positioning construction are greatly improved. When the pipe pile is put in place, the hoisting cross beam does not move downwards under the supporting action of the pipe pile, and at the moment, the elastic reset element can drive the clamping upright rod to slide to one side far away from the pipe pile along with the continuous unreeling of the reeling rope, and the clamping upright rod drives the clamping block to be automatically separated from the pipe pile, so that the follow-up construction operation can be performed. The device can realize self-adaptation centre gripping and fixed according to the diameter of different tubular pile to guarantee the stability when tubular pile construction location, improved tubular pile location construction's work efficiency and positioning accuracy greatly, easy operation, facilitate the use.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a positioning and supporting device for construction of a precast tubular pile according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a hoisting beam and a guide roller in a positioning and supporting device for precast tubular pile construction according to an embodiment of the present invention;

fig. 3 is a schematic structural view of a clamping assembly in a positioning and supporting device for construction of a precast tubular pile according to an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of a clamping assembly in a positioning and supporting device for construction of a precast tubular pile according to an embodiment of the present invention;

fig. 5 is a schematic structural view of an auxiliary supporting component in a positioning and supporting device for construction of a precast tubular pile according to an embodiment of the present invention;

fig. 6 is an enlarged view of a position a in fig. 1 in a positioning and supporting device for construction of a precast tubular pile according to an embodiment of the present invention.

In the accompanying drawings: a working platform 1; a moving mechanism 11; a hoisting station 12; an auxiliary support assembly 2; a support plate 21; a first telescopic element 22; a second telescopic element 23; a support chassis 24; a hoisting mechanism 3; a gantry 31; hoisting the cross beam 32; a hook 33; a guide roller 34; a guide chute 35; a clamping assembly 4; a hanging ring 41; a connecting shaft 42; a lifting link 43; clamping upright 44; an elastic return element 45; a clamp block 46; a hoisting assembly 5; a wind-up roller 51; winding up the rope 52; a fixed pulley 53.

The achievement of the objects, functional features and advantages of the present invention will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Specific implementations of the invention are described in detail below in connection with specific embodiments.

As shown in fig. 1 to 4, the positioning and supporting device for construction of a precast tubular pile provided by an embodiment of the present invention includes a working platform 1, a moving mechanism 11 is disposed at the bottom of the working platform 1, and the working platform 1 is rotatably mounted on the moving mechanism 11, and further includes:

the hoisting mechanism 3 comprises a portal frame 31 arranged on the working platform 1, a hoisting beam 32 is slidably arranged in the portal frame 31 along the vertical direction, the working platform 1 is provided with a hoisting station 12 (groove-shaped) in the vertical projection area of the hoisting beam 32, and the bottom of the hoisting beam 32 is provided with a lifting hook 33;

the clamping assembly 4 is used for adaptively clamping the tubular pile hoisted at the lifting hook 33, the clamping assembly 4 comprises two clamping vertical rods 44 symmetrically arranged in the lifting beam 32, the clamping vertical rods 44 are slidably arranged in the lifting beam 32 along the horizontal direction, the two clamping vertical rods 44 are connected with the inside of the lifting beam 32 through elastic reset elements 45, a clamping block 46 is arranged at the lower ends of the two clamping vertical rods 44, the two clamping blocks 46 are oppositely arranged on the clamping vertical rods 44, the tops of the two clamping vertical rods 44 are rotatably connected with a lifting connecting rod 43, and one ends of the two lifting connecting rods 43 far away from the clamping vertical rods 44 are rotatably arranged on a connecting rotating shaft 42; and

the lifting assembly 5 is arranged on the working platform 1, the lifting assembly 5 is connected with the connecting rotating shaft 42, and the lifting assembly 5 is used for driving the clamping assembly 4 to adaptively clamp the side wall of the pipe pile and synchronously driving the lifting beam 32 to install and position the clamped pipe pile.

In the embodiment of the invention, the installation position of the portal frame 31 can be as close to the center of the working platform 1 as possible by arranging the hoisting station 12, so that the center of gravity of the whole device is as close to the center of the working platform 1 as possible when hoisting work is carried out, and the stability of the device is improved. When in use, the hoisting beam 32 is firstly lowered to a specified height through the hoisting component 5, and then the top of the pipe pile is hoisted on the lifting hook 33. Then lift by crane subassembly 5 to tubular pile, in this in-process, because the action of the gravity of tubular pile, lift by crane subassembly 5 can drive the connection pivot 42 upward movement at first, the connection pivot 42 drives two centre gripping pole setting 44 simultaneously and moves in opposite directions through lifting by crane connecting rod 43, drive two grip blocks 46 through centre gripping pole setting 44 and be close to each other, in order to realize the lateral wall of tubular pile that treats the hoist and mount and carry out the centre gripping, and after grip block 46 contacts with the lateral wall of tubular pile, centre gripping pole setting 44 just is not sliding, thereby reach the purpose of carrying out self-adaptation centre gripping according to the diameter of tubular pile. After the side wall of the pipe pile is clamped and fixed, the clamping upright rod 44 can drive the lifting beam 32 to integrally move upwards, and the lifting beam 32 drives the pipe pile to synchronously rise through the lifting hook 33, so that the lifting of the pipe pile can be realized. In the process of lowering the pipe pile, the clamping assembly 4 can always keep a stable clamping state due to the gravity action of the pipe pile, so that the pipe pile can not swing when being positioned and installed, and the working efficiency and positioning accuracy of pipe pile positioning construction are greatly improved. In the process of lowering the pipe pile, the clamping assembly 4 can always keep a stable clamping state due to the gravity action of the pipe pile, so that the pipe pile can not swing when being positioned and installed, and the working efficiency and positioning accuracy of pipe pile positioning construction are greatly improved. When the pipe pile is put in place, the lifting beam 32 does not move downwards under the supporting action of the pipe pile, and at the moment, along with the continuous unreeling of the reeling rope, the elastic reset element 45 can drive the clamping upright rod 44 to slide to one side far away from the pipe pile, and the clamping upright rod 44 drives the clamping block 46 to be automatically separated from the pipe pile, so that the follow-up construction operation can be performed.

As shown in fig. 1 and 2, as a preferred embodiment of the present invention, guide rollers 34 are rotatably mounted on both sides of the lifting beam 32, and a guide chute 35 for allowing the guide rollers 34 to slide linearly in a vertical direction is formed in the gantry 31.

In the embodiment of the invention, in the process of up-and-down movement of the lifting beam 32, the lifting beam 32 can drive the guide rollers 34 to synchronously slide in the guide sliding grooves 35, so that the lifting beam 32 cannot relatively shake with the portal frame 31 in the process of up-and-down movement, and the stability in installation and positioning is ensured. Meanwhile, rolling friction is adopted between the guide roller 34 and the guide chute 35, abrasion among the components is small, and damping effect can not be generated in the movement process of the hoisting beam 32.

As shown in fig. 3 and 4, the elastic restoring element 45 may be a restoring spring or an elastic telescopic rod, and the elastic restoring force of the elastic restoring element 45 maximizes the distance between the two clamping uprights 44 when the device is in a free state.

As shown in fig. 1, 3, 4 and 6, as a preferred embodiment of the present invention, the lifting assembly 5 includes a winding roller 51 installed on the working platform 1, the winding roller 51 is connected with a driving motor, the winding roller 51 is driven to rotate by the driving motor, a winding rope 52 is wound on the winding roller 51, a fixed pulley 53 is installed on the top of the gantry 31, and the winding rope 52 is wound on the fixed pulley 53 and is connected with the connecting rotating shaft 42.

In the embodiment of the present invention, the connection shaft 42 is provided with a hanging ring 41, and one end of the winding rope 52 is connected to the hanging ring 41. When in use, the winding roller 51 is driven by the driving motor to wind (or unwind) the winding rope 52, and the winding rope 52 can drive the connecting rotating shaft 42 to move up and down through the hanging ring 41, so that the clamping assembly 4 is adjusted.

As shown in fig. 1 and 5, as a preferred embodiment of the present invention, the bottom of the working platform 1 is further provided with auxiliary supporting components 2 for supporting the working platform 1 in an auxiliary manner, and four groups of auxiliary supporting components 2 are symmetrically installed at the bottom of the working platform 1 in pairs, so as to increase the stability of the working platform 1 in lifting and positioning.

In the embodiment of the present invention, the auxiliary supporting assembly 2 includes a supporting plate 21 rotatably mounted on the bottom wall of the working platform 1 and a first telescopic element 22, wherein the movable end of the first telescopic element 22 is connected with the side wall of the supporting plate 21, the free end of the supporting plate 21 is mounted with a second telescopic element 23, and the bottom of the second telescopic element 23 is connected with a supporting chassis 24. Specifically, the first telescopic element 22 and the second telescopic element 23 are hydraulic telescopic rods.

In use, the supporting chassis 24 is in stable contact with the ground only by controlling the amount of extension and retraction of the second extension and retraction element 23. Under the cooperation of four supporting chassis 24, alright support work platform 1, prevent that the device is whole to take place to turn on one's side and slope when hoist and mount location to through the timely regulation to individual mutually independent second telescopic element 23, can keep work platform 1 in the horizontality all the time, and then guarantee the levelness when tubular pile is fixed a position, reduce the operation error that relies on manual positioning to bring. Simultaneously, before the supporting chassis 24 contacts with the ground, the second telescopic element 23 can be driven to rotate through the telescopic movement of the first telescopic element 22, so that the contact position of the supporting chassis 24 and the ground can be adjusted, and the operation flexibility and the environmental adaptability of the device can be improved according to the working area in actual working.

As shown in fig. 1, as a preferred embodiment of the present invention, the moving mechanism 11 is a crawler-type moving mechanism, which has a strong carrying capacity and good trafficability, and is convenient to move and work in a construction area.

Working principle: before the pipe pile is constructed and positioned, the second telescopic element 23 is driven to rotate through the telescopic movement of the first telescopic element 22, so that the contact position of the supporting chassis 24 and the ground is adjusted, and then the supporting chassis 24 and the ground are stably contacted through controlling the telescopic amount of the second telescopic element 23, so that the working platform 1 can be stably supported. When the hoisting device is used, the hoisting beam 32 is firstly lowered to a specified height through the hoisting assembly 5, then the top of the pipe pile is hoisted on the lifting hook 33, and the pipe pile can be hoisted through the hoisting assembly 5. Specifically, the wind-up roller 51 is driven by the driving motor to wind the winding rope 52, in the process, due to the gravity action of the pipe pile, the winding rope 52 drives the connecting rotating shaft 42 to move upwards through the hanging ring 41, the connecting rotating shaft 42 drives the two clamping uprights 44 to move in opposite directions simultaneously through the lifting connecting rod 43, the clamping uprights 44 drive the two clamping blocks 46 to approach each other, the two clamping blocks 46 clamp the side wall of the pipe pile to be lifted, and after the clamping blocks 46 clamp the side wall of the pipe pile stably, the clamping uprights 44 do not slide, so that the purpose of self-adaptive clamping according to the diameter of the pipe pile is achieved. After the side wall of the pipe pile is clamped and fixed, the clamping upright rod 44 can drive the lifting beam 32 to integrally move upwards, and the lifting beam 32 drives the pipe pile to synchronously rise through the lifting hook 33, so that the lifting of the pipe pile can be realized. In the process of lowering the pipe pile, the clamping assembly 4 can always keep a stable clamping state due to the gravity action of the pipe pile, so that the pipe pile can not swing when being positioned and installed, and the working efficiency and positioning accuracy of pipe pile positioning construction are greatly improved. When the pipe pile is put in place, the lifting beam 32 does not move downwards under the supporting action of the pipe pile, and at the moment, along with the continuous unreeling of the reeling rope, the elastic reset element 45 can drive the clamping upright rod 44 to slide to one side far away from the pipe pile, and the clamping upright rod 44 drives the clamping block 46 to be automatically separated from the pipe pile, so that the follow-up construction operation can be performed.

The embodiment of the invention also discloses a prefabricated pipe pile construction positioning method, which is based on the prefabricated pipe pile construction positioning and supporting device and mainly comprises the following steps:

step 1, driving a second telescopic element 23 to rotate through telescopic movement of a first telescopic element 22, so as to adjust the second telescopic element 23 to a designated position, and then enabling a supporting chassis 24 to be in stable contact with the ground through controlling the telescopic amount of the second telescopic element 23, so as to stably support a working platform 1;

step 2, lowering the lifting beam 32 to a specified height through the lifting assembly 5, lifting the pipe pile at the lifting station 12 on the lifting hook 33, driving the winding roller 51 to wind the winding rope 52 through the driving motor, driving the connecting rotating shaft 42 to move upwards through the lifting ring 41 by the winding rope 52, driving the two clamping upright rods 44 to move oppositely through the lifting connecting rod 43 by the connecting rotating shaft 42, and driving the two clamping blocks 46 to be close to each other by the clamping upright rods 44, so as to clamp the side wall of the pipe pile to be lifted;

step 3, after the side wall of the pipe pile is clamped and fixed, the clamping upright rod 44 drives the lifting beam 32 to integrally move upwards, the lifting beam 32 drives the pipe pile to synchronously rise through the lifting hook 33, so that the lifting of the pipe pile can be realized, and then the pipe pile is moved to a designated mounting position for lowering;

and 4, after the pipe pile is lowered in place, the lifting beam 32 does not move downwards under the supporting action of the pipe pile, and at the moment, along with the continuous unreeling of the reeling rope, the elastic reset element 45 drives the clamping upright rod 44 to slide to one side far away from the pipe pile, and the clamping upright rod 44 drives the clamping block 46 to be automatically separated from the pipe pile, so that the positioning and the installation of the pipe pile are completed.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a prefabricated tubular pile construction location strutting arrangement, includes work platform (1), the bottom of work platform (1) is provided with moving mechanism (11), just work platform (1) rotate and install on moving mechanism (11), its characterized in that still includes:

the lifting mechanism (3), the lifting mechanism (3) comprises a portal frame (31) arranged on the working platform (1), a lifting cross beam (32) is slidably arranged in the portal frame (31) along the vertical direction, and a lifting hook (33) is arranged at the bottom of the lifting cross beam (32);

the clamping assembly (4), the clamping assembly (4) is used for carrying out self-adaptive clamping on the pipe pile hoisted at the lifting hook (33), the clamping assembly (4) comprises two clamping vertical rods (44) symmetrically arranged in the hoisting cross beam (32), the clamping vertical rods (44) are slidably arranged in the hoisting cross beam (32) along the horizontal direction, the two clamping vertical rods (44) are connected with the inside of the hoisting cross beam (32) through elastic reset elements (45), one clamping block (46) is arranged at the lower end of each clamping vertical rod (44), the two clamping blocks (46) are oppositely arranged on the clamping vertical rods (44), the tops of the two clamping vertical rods (44) are rotatably connected with one hoisting connecting rod (43), and one ends of the two hoisting connecting rods (43) far away from the clamping vertical rods (44) are rotatably arranged on the connecting rotating shaft (42); and

lifting by crane subassembly (5), lifting by crane subassembly (5) install on work platform (1), just lifting by crane subassembly (5) are connected with connecting pivot (42), lifting by crane subassembly (5) are used for driving clamping component (4) and carry out self-adaptation centre gripping to the lateral wall of tubular pile to synchronous drive hoist and mount crossbeam (32) and install the location to the tubular pile that is held.

2. The precast tubular pile construction positioning and supporting device according to claim 1, wherein the working platform (1) is provided with a groove-shaped hoisting station (12) in a vertically projected area of the hoisting cross beam (32).

3. The positioning and supporting device for the construction of the prefabricated pipe pile according to claim 1, wherein guide rollers (34) are rotatably mounted on two sides of the hoisting cross beam (32), and guide sliding grooves (35) for the guide rollers (34) to linearly slide in the vertical direction are formed in the portal frame (31).

4. A precast tubular pile construction positioning support device according to claim 1, characterized in that the elastic return element (45) is a return spring or an elastic telescopic rod, and that when the device is in a free state, the elastic restoring force of the elastic return element (45) will bring the distance between the two clamping uprights (44) to a maximum value.

5. The precast tubular pile construction positioning and supporting device according to claim 1, wherein the hoisting assembly (5) comprises a winding roller (51) installed on the working platform (1), the winding roller (51) is connected with a driving motor, a winding rope (52) is wound on the winding roller (51), a fixed pulley (53) is installed at the top of the portal frame (31), and the winding rope (52) bypasses the fixed pulley (53) and is connected with the connecting rotating shaft (42).

6. The precast tubular pile construction positioning and supporting device according to claim 5, wherein the connecting rotating shaft (42) is provided with a hanging ring (41), and one end of the winding rope (52) is connected with the connecting rotating shaft (42) through the hanging ring (41).

7. The precast tubular pile construction positioning and supporting device according to claim 1, wherein an auxiliary supporting component (2) for carrying out auxiliary supporting on the working platform (1) is further arranged at the bottom of the working platform (1), and four groups of auxiliary supporting components (2) are symmetrically arranged at the bottom of the working platform (1) in pairs.

8. The precast tubular pile construction positioning and supporting device according to claim 7, characterized in that the auxiliary supporting assembly (2) comprises a supporting plate (21) and a first telescopic element (22) rotatably mounted on the bottom wall of the working platform (1), the movable end of the first telescopic element (22) is connected with the side wall of the supporting plate (21), a second telescopic element (23) is mounted at the free end of the supporting plate (21), and a supporting chassis (24) is connected to the bottom of the second telescopic element (23).

9. The precast tubular pile construction positioning and supporting device according to claim 8, characterized in that the first telescopic element (22) and the second telescopic element (23) are both hydraulic telescopic rods.

10. A method for positioning a precast tubular pile in construction, characterized in that the apparatus for positioning a precast tubular pile in construction according to any one of claims 1 to 9 comprises the steps of:

step 1, driving a second telescopic element (23) to rotate through telescopic movement of a first telescopic element (22), so that the second telescopic element (23) is adjusted to a designated position, and then enabling a supporting chassis (24) to be in stable contact with the ground through controlling the telescopic amount of the second telescopic element (23), so that a working platform (1) is stably supported;

step 2, lowering a hoisting beam (32) to a specified height through a hoisting assembly (5), hoisting a tubular pile at a hoisting station (12) on a lifting hook (33), driving a winding roller (51) to wind a winding rope (52) through a driving motor, driving a connecting rotating shaft (42) to move upwards through a lifting ring (41), driving two clamping upright rods (44) to move in opposite directions simultaneously through a hoisting connecting rod (43) by the connecting rotating shaft (42), and driving two clamping blocks (46) to be close to each other by the clamping upright rods (44), so that the side wall of the tubular pile to be hoisted is clamped;

step 3, after the side wall of the pipe pile is clamped and fixed, the clamping upright rod (44) drives the lifting beam (32) to integrally move upwards, the lifting beam (32) drives the pipe pile to synchronously rise through the lifting hook (33), namely, the lifting of the pipe pile is realized, and then the pipe pile is moved to a designated mounting position for lowering;

and 4, after the pipe pile is lowered in place, the lifting cross beam (32) does not move downwards under the supporting action of the pipe pile, at the moment, along with the continuous unreeling of the reeling rope (52), the elastic reset element (45) drives the clamping upright rod (44) to slide to one side far away from the pipe pile, and the clamping upright rod (44) drives the clamping block (46) to be automatically separated from the pipe pile, so that the positioning and the installation of the pipe pile are completed.