CN220684450U

CN220684450U - Hoisting device

Info

Publication number: CN220684450U
Application number: CN202322420174.0U
Authority: CN
Inventors: 鲁成林; 刘玉飞; 逯鹏; 郭小亮; 余刚; 张清涛; 赵辉; 崔文涛; 闫雨成; 郭少帅
Original assignee: Huadian Heavy Industries Co Ltd
Current assignee: Huadian Heavy Industries Co Ltd
Priority date: 2023-09-06
Filing date: 2023-09-06
Publication date: 2024-03-29
Anticipated expiration: 2033-09-06

Abstract

The utility model relates to the technical field of building hoisting, and discloses a hoisting device. Specifically, the upper surface of the first cross beam is provided with at least two lifting lugs which are arranged at intervals; the clamping jaw assembly comprises a first clamping jaw and a second clamping jaw, one ends of the first clamping jaw and the second clamping jaw are connected with the first cross beam through the connecting assembly, and the other ends of the first clamping jaw and the second clamping jaw are suitable for clamping PHC pipe piles; two ends of the connecting plate are respectively hinged with the first clamping jaw and the second clamping jaw; the second cross beam is arranged between the adjacent clamping jaw assemblies and is connected with the connecting plate; the driving piece is arranged between the adjacent clamping jaw assemblies, the fixed end of the driving piece is connected with the lower end face of the first beam, the driving end of the driving piece is connected with the second beam, and the driving end of the driving piece is suitable for controlling the opening or closing of the first clamping jaw and the second clamping jaw through driving the second beam. According to the utility model, the driving piece is used for controlling the clamping assembly to be opened or closed, so that the safety and reliability of the clamping assembly can be improved, the participation of manpower is reduced, and the construction efficiency is improved.

Description

Hoisting device

Technical Field

The utility model relates to the technical field of building hoisting, in particular to a hoisting device.

Background

PHC tubular pile (namely prestressed high-strength concrete tubular pile) is a hollow cylinder type concrete prefabricated component, and is easy to crush when being knocked, so that the protection requirement for hoisting is higher.

At present, after a hanging strip or a steel wire rope is wound on a PHC pipe pile manually, the PHC pipe pile is hoisted, and then the hanging strip or the steel wire rope is pulled out manually, so that the working efficiency is low, and the risk of injury of personnel due to irregular operation exists.

Disclosure of Invention

In view of the above, the utility model provides a lifting device to solve the problems of low working efficiency and high risk coefficient of the existing lifting device.

The utility model provides a hoisting device, comprising:

the PHC pipe pile comprises a first cross beam, wherein the upper surface of the first cross beam is provided with at least two lifting lugs arranged at intervals, the lower surface of the first cross beam is provided with at least two clamping jaw assemblies arranged at intervals, each clamping jaw assembly comprises a first clamping jaw and a second clamping jaw, one ends of the first clamping jaw and the second clamping jaw are connected with the first cross beam through a connecting assembly, and the other ends of the first clamping jaw and the second clamping jaw are suitable for clamping PHC pipe piles;

the two ends of the connecting plate are respectively hinged with the first clamping jaw and the second clamping jaw;

the second cross beam is arranged between the adjacent clamping jaw assemblies and is connected with the connecting plate;

the driving piece is arranged between the adjacent clamping jaw assemblies and is provided with a fixed end and a driving end, the fixed end of the driving piece is connected with the lower end face of the first beam, the driving end of the driving piece is connected with the second beam, and the driving end of the driving piece is suitable for controlling the opening or closing of the first clamping jaw and the second clamping jaw through driving the second beam.

The beneficial effects are that: according to the utility model, the driving end of the driving piece is connected with the second cross beam, and two ends of the second cross beam are respectively connected with two connecting plates, and as the connecting plates are hinged with the first clamping jaw and the second clamping jaw, when the driving end of the driving piece drives the second cross beam to be close to the first cross beam, the first clamping jaw and the second clamping jaw are opened; the first jaw and the second jaw are closed when the drive end of the drive member drives the second beam away from the first beam. The PHC pipe pile lifting device has the advantages that the participation quantity of workers in the PHC pipe pile lifting process is reduced, meanwhile, the safety and reliability of the clamping jaw assembly in the lifting process can be guaranteed, and the construction efficiency is improved.

In an alternative embodiment, the connection ends of the first clamping jaw and the second clamping jaw are arranged in a crossed manner; the connecting assembly comprises a first connecting piece, a second connecting piece and a third connecting piece, one end of the first connecting piece is fixedly connected with the first cross beam, and the other end of the first connecting piece is hinged with the second connecting piece and the third connecting piece; one end of the second connecting piece and one end of the third connecting piece, which are far away from the first connecting piece, extend towards a direction far away from each other respectively; one end of the second connecting piece, which is far away from the first connecting piece, is hinged with the second clamping jaw, and one end of the third connecting piece, which is far away from the first connecting piece, is hinged with the first clamping jaw.

The beneficial effects are that: according to the utility model, a parallelogram structure is formed between the connecting assembly and the first clamping jaw and the second clamping jaw, and the parallelogram structure can be extended along the direction vertical to the ground by utilizing the dead weight of the PHC pipe pile in the lifting process, so that the first clamping jaw and the second clamping jaw always have a tendency of closing, the self-locking of the clamping jaw assembly is realized, and the reliability of the clamping assembly is improved. In addition, the distance between the first cross beam and the clamping jaw assembly is shortened through extrusion external force extrusion or the driving end is contracted through the driving piece, so that the parallelogram structure stretches along the width direction of the first cross beam, the first clamping jaw and the second clamping jaw are opened, the PHC pipe pile is released or enters a space surrounded by the first clamping jaw and the second clamping jaw, the working efficiency is improved, and the labor cost is reduced.

In an alternative embodiment, the first connecting member includes a pair of first sub-connecting members disposed opposite to each other along a length direction of the first beam, one end of the first sub-connecting member is fixedly connected to the first beam, one of the other ends of the first sub-connecting members is hinged to one of the second connecting member and the third connecting member, and the other end of the first connecting member is hinged to the other of the second connecting member and the third connecting member.

The beneficial effects are that: according to the utility model, the second connecting piece and the third connecting piece are connected with different first sub-connecting pieces, so that the phenomenon of local stress concentration on the first connecting piece can be avoided, the structural strength and stability between the first connecting piece and the second connecting piece and between the first connecting piece and the third connecting piece are improved, and the working efficiency of the hoisting device is ensured.

In an alternative embodiment, the first connector includes a pair of first sub-connectors disposed opposite each other along the length of the first beam, the second connector includes a pair of second sub-connectors disposed opposite each other along the length of the first beam, and the third connector includes a pair of third sub-connectors disposed opposite each other along the length of the first beam; one end of the first sub-connecting piece is fixedly connected with the first cross beam, and the other end of the first sub-connecting piece is arranged on the outer sides of the second sub-connecting piece and the third sub-connecting piece, and is hinged with the second sub-connecting piece and the third sub-connecting piece.

The beneficial effects are that: according to the utility model, the first sub-connecting piece, the second sub-connecting piece and the third sub-connecting piece are arranged, so that the contact area between the second connecting piece, the third connecting piece and the first connecting piece is increased, the stress of the connecting points of the second connecting piece, the third connecting piece and the first connecting piece in the lifting process is more uniform, and the stability and the rigidity of the whole structure are effectively improved.

In an alternative embodiment, the first clamping jaw is provided with a pair of fourth sub-connectors oppositely arranged along the length direction of the first cross beam, and the pair of fourth sub-connectors are arranged between the pair of third sub-connectors and hinged with the pair of third sub-connectors; the second clamping jaw is provided with a pair of fifth sub-connecting pieces which are oppositely arranged along the length direction of the first cross beam, and the pair of fifth sub-connecting pieces are arranged between the pair of second sub-connecting pieces and hinged with the pair of second sub-connecting pieces.

The beneficial effects are that: according to the utility model, the second sub-connecting piece, the third sub-connecting piece, the fourth sub-connecting piece and the fifth sub-connecting piece are arranged, so that the contact area between the second connecting piece and the second clamping jaw and between the third connecting piece and the first clamping jaw is increased, the stress of the connecting points between the second connecting piece and the second clamping jaw and between the third connecting piece and the first clamping jaw in the lifting process is more uniform, the load on each connecting point is reduced, the stress concentration is avoided, and the stability and the rigidity of the whole structure are effectively improved.

In an alternative embodiment, the first connecting piece, the second connecting piece and the third connecting piece are provided with first through holes which are coaxially arranged, the second connecting piece and the second clamping jaw are provided with second through holes which are coaxially arranged, and the third connecting piece and the first clamping jaw are provided with third through holes which are coaxially arranged; and pin shafts are arranged in the first through hole, the second through hole and the third through hole in a penetrating manner, and the pin shafts are arranged along the length direction of the first cross beam.

The beneficial effects are that: according to the utility model, through the arrangement of the first through hole, the second through hole and the third through hole, accurate positioning of each subsequent part in the installation process is facilitated, and errors and deviations are reduced. In addition, the pin shafts are arranged in the through holes, so that the components can be rotationally connected, the connection relation of the components can be conveniently and rapidly released, and necessary maintenance and replacement can be performed.

In an alternative embodiment, one end of the lifting lug penetrates through the first cross beam, and the other end of the lifting lug is suitable for being connected with a lifting device in a matching mode.

The beneficial effects are that: according to the PHC pipe pile lifting device, one end of the lifting lug is arranged in the first cross beam in a penetrating mode, so that the connection strength between the lifting lug and the first cross beam can be increased, and the PHC pipe pile can be lifted smoothly.

In an alternative embodiment, the hoisting device comprises a plurality of first beams, and adjacent first beams are fixedly connected or detachably connected through a third beam.

The beneficial effects are that: according to the utility model, the plurality of first cross beams are assembled and matched, so that the length of the hoisting device can be adjusted adaptively, and the hoisting requirements of PHC pipe piles with different length specifications can be met.

In an alternative embodiment, the lifting device further comprises a controller, wherein the controller is in signal connection with the driving piece and is suitable for controlling the driving end of the driving piece to extend or retract.

The beneficial effects are that: according to the utility model, the controller is arranged, so that the driving end of the driving piece can be remotely controlled to extend or retract, the participation amount of workers in a hoisting site can be further reduced, and the possibility of injury accidents of the workers is reduced.

In an alternative embodiment, a rubber sheath is disposed between the first jaw and the second jaw.

The beneficial effects are that: according to the utility model, the rubber protective layer is arranged between the first clamping jaw and the second clamping jaw, so that the PHC pipe pile is prevented from being in direct contact with the first clamping jaw and the second clamping jaw, and damage to the PHC pipe pile caused by the first clamping jaw and the second clamping jaw in the lifting process is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a hoisting device according to an embodiment of the present utility model;

fig. 2 is a schematic structural diagram of a portion of a lifting device according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a first cross beam; 101. lifting lugs; 2. a jaw assembly; 201. a first jaw; 202. a second jaw; 2021. a fifth sub-connector; 203. a rubber sheath; 3. a connection assembly; 301. a first connector; 3011. a first sub-connector; 3012. a first through hole; 302. a second connector; 3021. a second sub-connector; 3022. a second through hole; 303. a third connecting member; 3031. a third through hole; 4. a connecting plate; 5. a second cross beam; 6. a driving member.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Aiming at the problems of low working efficiency and higher risk coefficient of the existing hoisting device, the utility model provides the hoisting device.

An embodiment of the present utility model is described below with reference to fig. 1 to 2.

As shown in fig. 1 and 2, the present utility model provides a lifting device, including: a first cross beam 1, a connecting plate 4, a second cross beam 5 and a driving member 6.

Specifically, the upper surface of the first cross beam 1 is provided with at least two lifting lugs 101 which are arranged at intervals, and the lower surface of the first cross beam is provided with at least two clamping jaw assemblies 2 which are arranged at intervals; the clamping jaw assembly 2 comprises a first clamping jaw 201 and a second clamping jaw 202, one ends of the first clamping jaw 201 and the second clamping jaw 202 are connected with the first cross beam 1 through the connecting assembly 3, and the other ends are suitable for clamping PHC pipe piles; two ends of the connecting plate 4 are respectively hinged with a first clamping jaw 201 and a second clamping jaw 202; the second cross beam 5 is arranged between the adjacent clamping jaw assemblies 2 and is connected with the connecting plate 4; the driving piece 6 is arranged between the adjacent clamping jaw assemblies 2 and is provided with a fixed end and a driving end, the fixed end of the driving piece 6 is connected with the lower end face of the first transverse beam 1, the driving end of the driving piece 6 is connected with the second transverse beam 5, and the driving end of the driving piece 6 is suitable for controlling the opening or closing of the first clamping jaw 201 and the second clamping jaw 202 through driving the second transverse beam 5.

In the embodiment of the utility model, the driving end of the driving piece 6 is connected with the second cross beam 5, and two connecting plates 4 are respectively arranged at two ends of the second cross beam 5, and as the connecting plates 4 are hinged with the first clamping jaw 201 and the second clamping jaw 202, when the driving end of the driving piece 6 drives the second cross beam 5 to approach the first cross beam 1, the second cross beam 5 applies a force for keeping the first clamping jaw 201 and the second clamping jaw 202 away from each other through the connecting plates 4, so that the first clamping jaw 201 rotates clockwise along the width direction of the first cross beam 1, the second clamping jaw 202 rotates anticlockwise along the width direction of the first cross beam 1, and the first clamping jaw 201 and the second clamping jaw 202 enter an open state; when the driving end of the driving member 6 drives the second cross member 5 away from the first cross member 1, the second cross member 5 applies a force to bring the first and second jaws 201 and 202 toward each other through the connecting plate 4, so that the first jaw 201 rotates counterclockwise in the width direction of the first cross member 1, so that the second jaw 202 rotates clockwise in the width direction of the first cross member 1, and the first and second jaws 201 and 202 enter a closed state. So set up, reduced PHC tubular pile handling in-process staff's participation quantity, can also guarantee clamping jaw assembly 2 at handling in-process fail safe nature simultaneously, improved the efficiency of construction.

It will be appreciated that a plurality of drives 6 may be provided in this embodiment to further ensure that the jaw assembly 2 is continuously and stably maintained in either the open or closed condition. The cross-sectional shapes of the first beam 1 and the second beam 5 in the embodiment of the present utility model may be circular, square or "i" shaped, and are not particularly limited herein.

According to one embodiment of the present utility model, the connecting ends of first jaw 201 and second jaw 202 are disposed in a cross-over arrangement; the connecting assembly 3 comprises a first connecting piece 301, a second connecting piece 302 and a third connecting piece 303, wherein one end of the first connecting piece 301 is fixedly connected with the first cross beam 1, and the other end of the first connecting piece 301 is hinged with the second connecting piece 302 and the third connecting piece 303; the ends of the second and third connection members 302 and 303, respectively, remote from the first connection member 301 extend in directions away from each other; the second connecting member 302 is hinged to the second jaw 202 at an end remote from the first connecting member 301, and the third connecting member 303 is hinged to the first jaw 201 at an end remote from the first connecting member 301.

It will be appreciated that when the driving member 6 fails, the present embodiment of the utility model also completes the handling process of the entire PHC pile by forming a "parallelogram" structure between the connecting assembly 3 and the first and second clamping jaws 201 and 202. The following is a detailed description of specific operating conditions.

Working condition one:

when the PHC pipe pile is required to be released, the distance between the first cross beam 1 and the clamping jaw assembly 2 is shortened through external force extrusion, so that the parallelogram structure stretches along the width direction of the first cross beam 1, the first clamping jaw 201 generates a torque rotating clockwise along the width direction of the first cross beam 1, the second clamping jaw 202 rotates anticlockwise along the width direction of the first cross beam 1, a space for releasing the PHC pipe pile is formed between the first clamping jaw 201 and the second clamping jaw 202, and the clamping jaw assembly 2 enters an open state.

Working condition II:

when the PHC pipe pile is required to be lifted and lifted, the self-weight of the PHC pipe pile can be utilized to enable the parallelogram structure to extend along the direction perpendicular to the ground, so that the first clamping jaw 201 and the second clamping jaw 202 always have a closed trend, self-locking of the clamping jaw assembly 2 is achieved, and the reliability of the clamping assembly is improved.

In addition, by engaging the "parallelogram" structure with the driving member 6, the utility of the clamping assembly can be further increased. Specifically, in the lifting process of the PHC pipe pile, the self weight of the PHC pipe pile and the extension of the driving end of the driving piece 6 are facilitated, the closing clamping force between the first clamping jaw 201 and the second clamping jaw 202 can be further increased, and the safety is improved. When the PHC pipe pile is required to be released, the distance between the first cross beam 1 and the clamping jaw assembly 2 and the shrinkage of the driving end of the driving piece 6 are shortened through external force extrusion, so that the PHC pipe pile can be released more simply and conveniently.

It should be noted that shortening the distance between the first beam 1 and the clamping jaw assembly 2 by external force extrusion is not an essential step in the PHC pile release process. When the driving member 6 is able to operate normally, the control of the opening of the jaw assembly 2 is preferably accomplished by retraction of the driving end of the driving member 6.

According to an embodiment of the present utility model, the first link 301 includes a pair of first sub-links 3011 disposed opposite to each other along the length of the first cross member 1, one end of the first sub-link 3011 is fixedly connected to the first cross member 1, the other end of one of the first sub-links 3011 is hinged to one of the second link 302 and the third link 303, and the other end of the other first link 301 is hinged to the other of the second link 302 and the third link 303. According to the embodiment of the utility model, the second connecting piece 302 and the third connecting piece 303 are connected with different first sub-connecting pieces 3011, so that the phenomenon of local stress concentration on the first connecting piece 301 can be avoided, the structural strength and stability between the first connecting piece 301 and the second connecting piece 302 as well as between the first connecting piece 303 and the third connecting piece 303 are improved, and the working efficiency of the hoisting device is ensured.

According to one embodiment of the present utility model, the first connector 301 includes a pair of first sub-connectors 3011 disposed opposite each other along the length of the first beam 1, the second connector 302 includes a pair of second sub-connectors 3021 disposed opposite each other along the length of the first beam 1, and the third connector 303 includes a pair of third sub-connectors disposed opposite each other along the length of the first beam 1; one end of the pair of first sub-connectors 3011 is fixedly connected to the first cross member 1, and the other end is disposed outside the pair of second sub-connectors 3021 and the pair of third sub-connectors and hinged to the pair of second sub-connectors 3021 and the pair of third sub-connectors. According to the embodiment of the utility model, the first sub-connecting piece 3011, the second sub-connecting piece 3021 and the third sub-connecting piece are arranged, so that the contact area between the second connecting piece 302 and the third connecting piece 303 and the first connecting piece 301 is increased, the stress of the connecting points of the second connecting piece 302 and the third connecting piece 303 and the first connecting piece 301 in the lifting process is more uniform, and the stability and rigidity of the whole structure are effectively improved.

In this embodiment, a pair of third sub-connectors may be disposed between a pair of second sub-connectors 3021, and then a pair of second sub-connectors 3021 may be disposed between a pair of first sub-connectors 3011; a pair of second sub-connectors 3021 may be disposed between a pair of third sub-connectors, and then disposed between a pair of first sub-connectors 3011; it is also possible to dispose the pair of first sub-connectors 3011 between the pair of second sub-connectors 3021 and then dispose the pair of second sub-connectors 3021 between the pair of third sub-connectors. The positional relationship among the first sub-connector 3011, the second sub-connector 3021, and the third sub-connector is not particularly limited as long as rotatable connection between the three can be achieved.

According to one embodiment of the present utility model, the first clamping jaw 201 is provided with a pair of fourth sub-connectors oppositely arranged along the length direction of the first cross beam 1, and the pair of fourth sub-connectors are arranged between the pair of third sub-connectors and hinged with the pair of third sub-connectors; the second clamping jaw 202 is provided with a pair of fifth sub-connectors 2021 which are oppositely arranged along the length direction of the first cross beam 1, and the pair of fifth sub-connectors 2021 are arranged between the pair of second sub-connectors 3021 and hinged with the pair of second sub-connectors 3021. By arranging the second sub-connector 3021, the third sub-connector, the fourth sub-connector and the fifth sub-connector 2021, the embodiment of the utility model increases the contact area between the second connector 302 and the second clamping jaw 202 and between the third connector 303 and the first clamping jaw 201, so that the connection points between the second connector 302 and the second clamping jaw 202 and between the third connector 303 and the first clamping jaw 201 are stressed more uniformly in the lifting process, the load on each connection point is reduced, the stress concentration is avoided, and the stability and the rigidity of the whole structure are effectively improved.

In this embodiment, a pair of two second sub-connectors may be provided between a pair of fifth sub-connectors 2021, and a pair of third sub-connectors may be provided between a pair of fourth sub-connectors. The positional relationship between the second sub-connector 3021 and the fifth sub-connector 2021 and the positional relationship between the third sub-connector and the fourth sub-connector are not particularly limited herein as long as rotatable connection therebetween can be achieved.

According to one embodiment of the present utility model, first through holes 3012 are coaxially arranged on first connecting member 301, second connecting member 302 and third connecting member 303, second through holes 3022 are coaxially arranged on second connecting member 302 and second clamping jaw 202, and third through holes 3031 are coaxially arranged on third connecting member 303 and first clamping jaw 201; pin shafts are arranged in the first through hole 3012, the second through hole 3022 and the third through hole 3031 in a penetrating manner, and the pin shafts are arranged along the length direction of the first cross beam 1.

The embodiment of the utility model facilitates accurate positioning of each subsequent component in the installation process and reduces errors and deviations by arranging the first through hole 3012, the second through hole 3022 and the third through hole 3031. In addition, the pin shafts are arranged in the through holes, so that the components can be rotationally connected, the connection relation of the components can be conveniently and rapidly released, and necessary maintenance and replacement can be performed.

According to one embodiment of the utility model, one end of the lifting lug 101 is arranged through the interior of the first cross beam 1, and the other end is adapted to be connected in a mating manner with a lifting device. According to the embodiment of the utility model, one end of the lifting lug 101 is penetrated into the first cross beam 1, so that the connection strength between the lifting lug and the first cross beam 1 can be increased, and the PHC pipe pile can be lifted smoothly.

According to one embodiment of the utility model, the hoisting device comprises a plurality of first cross beams 1, and the adjacent first cross beams 1 are fixedly connected or detachably connected through a third cross beam. According to the embodiment of the utility model, the lengths of the hoisting devices can be adaptively adjusted by assembling and matching the plurality of first cross beams 1, so that the requirements of PHC pipe piles with different length specifications on hoisting are met.

According to an embodiment of the utility model, the lifting device further comprises a controller in signal connection with the driving member 6, adapted to control the extension or retraction of the driving end of the driving member 6. According to the embodiment of the utility model, the controller is arranged, so that the driving end of the driving piece 6 can be remotely controlled to extend or retract, the participation amount of workers in a hoisting site can be further reduced, and the possibility of injury accidents of the workers is reduced.

In the embodiment of the present utility model, the driving member 6 may be an oil cylinder or an air cylinder, which is not particularly limited herein.

According to one embodiment of the present utility model, a rubber sheath 203 is disposed between first jaw 201 and second jaw 202. According to the embodiment of the utility model, the rubber sheath 203 is arranged between the first clamping jaw 201 and the second clamping jaw 202, so that the PHC pipe pile is prevented from being in direct contact with the first clamping jaw 201 and the second clamping jaw 202, and damage to the PHC pipe pile caused by the first clamping jaw 201 and the second clamping jaw 202 in the lifting process is reduced.

Although embodiments of the present utility model have been described in connection with the accompanying drawings, various modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations fall within the scope of the utility model as defined by the appended claims.

Claims

1. A lifting device, comprising:

the clamping jaw assembly comprises a first cross beam (1), wherein the upper surface of the first cross beam is provided with at least two lifting lugs (101) which are arranged at intervals, and the lower surface of the first cross beam is provided with at least two clamping jaw assemblies (2) which are arranged at intervals; the clamping jaw assembly (2) comprises a first clamping jaw (201) and a second clamping jaw (202), one end of the first clamping jaw (201) and one end of the second clamping jaw (202) are connected with the first cross beam (1) through a connecting assembly (3), and the other end of the first clamping jaw is suitable for clamping PHC pipe piles;

the two ends of the connecting plate (4) are respectively hinged with the first clamping jaw (201) and the second clamping jaw (202);

the second cross beam (5) is arranged between the adjacent clamping jaw assemblies (2) and is connected with the connecting plate (4);

the driving piece (6) is arranged between the adjacent clamping jaw assemblies (2) and is provided with a fixed end and a driving end, the fixed end of the driving piece (6) is connected with the lower end face of the first transverse beam (1), the driving end of the driving piece (6) is connected with the second transverse beam (5), and the driving end of the driving piece (6) is suitable for controlling the opening or closing of the first clamping jaw (201) and the second clamping jaw (202) through driving the second transverse beam (5).

2. Hoisting device according to claim 1, characterized in that the connection ends of the first clamping jaw (201) and the second clamping jaw (202) are arranged crosswise; the connecting assembly (3) comprises a first connecting piece (301), a second connecting piece (302) and a third connecting piece (303), one end of the first connecting piece (301) is fixedly connected with the first cross beam (1), and the other end of the first connecting piece is hinged with the second connecting piece (302) and the third connecting piece (303); -one end of the second (302) and third (303) connecting members remote from the first connecting member (301) respectively extend in a direction away from each other; the second connecting piece (302) is far away from one end of the first connecting piece (301) and hinged with the second clamping jaw (202), and the third connecting piece (303) is far away from one end of the first connecting piece (301) and hinged with the first clamping jaw (201).

3. Hoisting device according to claim 2, wherein the first connecting member (301) comprises a pair of first sub-connecting members (3011) arranged opposite to each other along the length direction of the first cross beam (1), one end of the first sub-connecting member (3011) is fixedly connected to the first cross beam (1), the other end of one of the first sub-connecting members (3011) is hinged to one of the second connecting member (302) and the third connecting member (303), and the other end of the other first connecting member (301) is hinged to the other of the second connecting member (302) and the third connecting member (303).

4. The lifting device according to claim 2, wherein the first connecting member (301) comprises a pair of first sub-connecting members (3011) arranged opposite each other along the length direction of the first beam (1), the second connecting member (302) comprises a pair of second sub-connecting members (3021) arranged opposite each other along the length direction of the first beam (1), and the third connecting member (303) comprises a pair of third sub-connecting members arranged opposite each other along the length direction of the first beam (1); one end of the first sub-connecting piece (3011) is fixedly connected with the first cross beam (1), and the other end of the first sub-connecting piece is arranged on the outer sides of the second sub-connecting piece (3021) and the third sub-connecting piece, and is hinged with the second sub-connecting piece (3021) and the third sub-connecting piece.

5. Hoisting device according to claim 4, characterized in that the first clamping jaw (201) is provided with a pair of fourth sub-connectors oppositely arranged along the length direction of the first cross beam (1), and the pair of fourth sub-connectors are arranged between the pair of third sub-connectors and hinged with the pair of third sub-connectors; the second clamping jaw (202) is provided with a pair of fifth sub-connectors (2021) which are oppositely arranged along the length direction of the first cross beam (1), and the pair of fifth sub-connectors (2021) are arranged between the pair of second sub-connectors (3021) and hinged with the pair of second sub-connectors (3021).

6. Hoisting device according to any one of claims 2-5, characterized in that the first connecting piece (301) and the second connecting piece (302) and the third connecting piece (303) are provided with coaxially arranged first through holes (3012), the second connecting piece (302) and the second clamping jaw (202) are provided with coaxially arranged second through holes (3022), and the third connecting piece (303) and the first clamping jaw (201) are provided with coaxially arranged third through holes (3031); pin shafts are arranged in the first through hole (3012), the second through hole (3022) and the third through hole (3031) in a penetrating mode, and the pin shafts are arranged along the length direction of the first cross beam (1).

7. Hoisting device according to any one of claims 1-5, characterized in that one end of the lifting lug (101) is arranged inside the first cross beam (1) in a penetrating manner, and the other end is adapted to be connected with a hoisting device in a mating manner.

8. Hoisting device according to any one of claims 1-5, characterized in that it comprises a plurality of said first beams (1), adjacent said first beams (1) being fixedly connected or detachably connected by means of a third beam.

9. Hoisting device according to any one of claims 1-5, further comprising a controller in signal connection with the driving member (6), adapted to control the driving end of the driving member (6) to extend or retract.

10. Hoisting device according to any one of claims 1-5, characterized in that a rubber sheath (203) is arranged between the first clamping jaw (201) and the second clamping jaw (202).