CN111977532A

CN111977532A - Be used for construction machinery and construction synchronous elevation structure

Info

Publication number: CN111977532A
Application number: CN202010802161.8A
Authority: CN
Inventors: 牛林会
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2020-11-24

Abstract

The invention provides a synchronous lifting structure for construction machinery and construction, which comprises a base; the bottom of the base is provided with four universal wheels, and a rectangular baffle is fixed on the base through bolts; the base is provided with a lifting mechanism, and the other end of the lifting mechanism is connected with the connecting mechanism; the bottom of the connecting mechanism is provided with a driving shaft and a transmission shaft A, the driving shaft is provided with a labor-saving worm, and the middle position of the transmission shaft A is provided with a turbine. The feeding structure is improved, the crank is arranged on the guardrail, the crank and the movable pulley are connected through the steel wire rope, the other end of the steel wire rope is fixed on the guardrail, an arm of force is saved between the movable pulley and the crank, when the crank is rotated to wind the steel wire rope, the movable pulley can ascend, the convenience is brought to the independent feeding of constructors on the support plate B, the ratchet wheel is arranged at one end of the crank, and the ratchet wheel is arranged to enable the feeding to be safer.

Description

Be used for construction machinery and construction synchronous elevation structure

Technical Field

The invention belongs to the technical field of house construction, and particularly relates to a synchronous lifting structure for construction machinery and building construction.

Background

The house building is an entity for providing life, production, work or other activities for users or investors in a planning and designing place, the house building structure is divided into categories according to building materials of main bearing members such as beams, columns and walls of a house, the design of the house structure aims to ensure that the built structure is safe and applicable, requirements of various expected functions can be met within a specified year, the house building is economical and reasonable, a support can be used in a small house building, the structure flexibility of lifting of the existing support is poor, and the structure capable of synchronously lifting according to the house building needs to be improved.

The existing Chinese invention patent with the patent number CN201910757580.1, for example, discloses an elevator for indoor building construction, which comprises a bottom box body, a workbench and a ladder hinged on the workbench, wherein a base is arranged in the base space in a sliding way, wheels are symmetrically and rotatably arranged on the base left and right, when the bottom box body needs to be moved, a rotating wheel is rotated and drives a rotating wheel shaft to rotate, the rotating wheel shaft rotates and drives a first bevel gear to rotate, the first bevel gear rotates and drives a second bevel gear and a threaded rod to rotate, the threaded rod can push the base to slide downwards, so that the wheels are contacted with the ground, the bottom box body can be conveniently moved and can be freely moved, the peripheral anti-falling base can be opened during working, the falling accident can be prevented, the lifting can be carried out up and down, and workers can conveniently take various raw materials and tools during decoration, the workstation can rotate, can be timely with the position locking, make the workstation stable can not take place to rock.

Based on the search for patent numbers, the defects in the prior art are combined to find that:

the simple and easy support frame can be used to most among the current small-size housing construction, perhaps constructs through the mode that wooden board was built, because the support frame can be fixed at same height, can not carry out synchronous lift according to the construction, can be more hard when the construction, lacks feed mechanism when the material loading, needs the special messenger to carry out the material loading through the instrument with the spade of similarity, not only increases the manpower when the material loading, and the material loading is more hard moreover.

In view of the above, research and improvement are made on the existing structure and defects, and a synchronous lifting structure for construction machinery and construction is provided, so as to achieve the purpose of higher practical value.

Disclosure of Invention

In order to solve the technical problems, the invention provides a synchronous lifting structure for construction machinery and construction, which aims to solve the problems that a simple support frame is mostly used in the existing small-sized house buildings, or construction is carried out in a wood plate building mode, the support frame can be fixed at the same height, synchronous lifting cannot be carried out according to the construction, construction is laborious, a feeding mechanism is lacked during feeding, a specially-assigned person is required to feed materials through a tool similar to a shovel, manpower is increased during feeding, and the feeding is laborious.

The invention is used for the purpose and the effect of a synchronous lifting structure for construction machinery and construction, and is achieved by the following specific technical means:

a synchronous lifting structure for construction machinery and construction comprises a base; the bottom of the base is provided with four universal wheels, and a rectangular baffle is fixed on the base through bolts; the base is provided with a lifting mechanism, and the other end of the lifting mechanism is connected with the connecting mechanism; the bottom of the connecting mechanism is provided with a driving shaft and a transmission shaft A, the driving shaft is provided with a labor-saving worm, and the middle position of the transmission shaft A is provided with a turbine; the driving shaft is connected with the transmission shaft A through a worm gear and a worm, a rotating hand wheel is arranged on the driving shaft, and the transmission shaft A is rotatably connected to the connecting mechanism through a supporting block; a support plate B is arranged between the two connecting mechanisms, and a transmission shaft B in rotary connection is arranged on the support plate B; two guardrails are fixed on the supporting plate B through bolts, a protective net is installed on each guardrail, and a feeding mechanism is installed in the middle of each guardrail.

Further, the base is including the supporting seat, two T shape sliding tray that agree with mutually with sliding block B are seted up to the symmetry on the base, and have the rectangular block of four L shapes through the bolt fastening on the base, set up the screw hole that agrees with mutually with the support seat on the rectangular block, install the threaded rod that runs through the rectangular block on the circular shape supporting seat.

Further, elevating system is equipped with two fixed connection's connecting seat including scissors support arm, sliding block A, screw axis of rotation, sliding block B and clean piece on the base, just the one end of scissors support arm is rotated and is connected on the connecting seat, and the other end of scissors support arm rotates and connects on sliding block A and sliding block B, and sliding block A and sliding block B be sliding connection respectively on backup pad A, base, set up the screw hole that agrees with screw axis of rotation on the sliding block A, and an elastic connection's clean piece is installed to the last symmetry of sliding block B.

Further, sliding block B's bottom symmetry is equipped with the fillet, and installs two circular gag lever posts on the clean piece of rectangle, and the gag lever post supports through sliding block B, and the bottom of clean piece agrees with mutually with the sliding tray of base, has seted up the rectangular channel on the sliding tray of base.

Furthermore, the circular driving shaft is rotatably connected to the supporting plate A, two supporting blocks for supporting the driving shaft are mounted on the supporting plate A, bevel gears are symmetrically mounted on the transmission shaft A, the bevel gears are also mounted on the threaded rotating shaft and the driving shaft, and the bevel gears meshed with the driving shaft are mounted on the transmission shaft B.

Further, coupling mechanism is including backup pad A and connecting block, the rectangle two sliding tray that agree with mutually with T shape sliding block A are seted up to backup pad A's bottom symmetry, and the last symmetry of backup pad A has seted up two sets of rectangular channels, and processing has the rectangular block that agrees with mutually with the rectangular channel on the connecting block of L shape, and the connecting block passes through the bolt fastening on backup pad A, has seted up the rectangular hole on the connecting block, and clamping bolt is installed to one side of connecting block.

Furthermore, a conical sewage discharge hole is formed in the support plate B, an anti-slip pad is mounted on the support plate B, a through hole which is aligned with the sewage discharge hole is formed in the anti-slip pad, and two groups of inverted U-shaped clamping blocks are symmetrically mounted on the support plate B.

Furthermore, two rectangular grooves matched with the guardrails are symmetrically formed in the supporting plate B, two rectangular holes facilitating installation of the protective net are formed in the guardrails, and a group of elastic belts is installed on the inner sides of the guardrails.

Further, feed mechanism is including movable pulley, crank and ratchet, the couple is installed to the bottom of movable pulley, and the winding has wire rope on the movable pulley, and wire rope's one end is fixed on the guardrail, and the other end winding forms one and economizes the arm of force on the crank, installs the supporting shoe of a U-shaped structure on the crank, and the supporting shoe passes through the bolt fastening on the guardrail, and the crank runs through the ratchet and is connected with the rolling wheel, and the ratchet passes through the bolt fastening on the rolling wheel, and the elastic component is installed to one side-mounting of ratchet, installs the couple that conveniently outwards stimulates fixedly on the elastic component, installs the link that makes things convenient for the couple to fix on the U-shaped supporting shoe.

Compared with the prior art, the invention has the following beneficial effects:

the invention improves the synchronous lifting mechanism of the support plate B during building, the scissor support arms are arranged between the base and the support plate A, so that the scissor support arms can push the support plate A to lift, the support plate A drives the support plate B to lift, the worm gear and the worm are arranged between the driving shaft and the transmission shaft A, labor is saved when the driving shaft is rotated, one driving shaft B is arranged between the two driving shafts, the other driving shaft can also rotate when the other driving shaft is rotated, so that the two sets of scissor support arms can lift synchronously, and the arrangement of the driving shafts is convenient for engineers to operate independently according to the building height.

The feeding structure is improved, the crank is arranged on the guardrail, the crank and the movable pulley are connected through the steel wire rope, the other end of the steel wire rope is fixed on the guardrail, an arm of force is saved between the movable pulley and the crank, when the crank is rotated to wind the steel wire rope, the movable pulley can ascend, the convenience is brought to the independent feeding of constructors on the support plate B, the ratchet wheel is arranged at one end of the crank, and the ratchet wheel is arranged to enable the feeding to be safer.

The supporting base is characterized in that a rectangular block convenient for the support plate B to be clamped is arranged on the support plate A, a clamping bolt capable of enabling the support plate B to be firmer is arranged on the rectangular block, a cleaning block is arranged on the sliding block B, dust in a sliding groove of the base can be scraped during the moving process of the cleaning block, and the supporting base is convenient to hide and support through a supporting base which is provided with threaded connection on the base.

Drawings

Fig. 1 is a schematic view of a first perspective axis of the present invention as a whole.

Fig. 2 is a schematic view of the second viewing angle of fig. 1 according to the present invention.

Fig. 3 is a schematic view of the third viewing angle of fig. 1 according to the present invention.

Fig. 4 is a schematic view of the invention in partial section and partial exploded axial view of fig. 1.

Fig. 5 is a schematic view of the second viewing angle of fig. 4 according to the present invention.

Fig. 6 is a schematic view of the third viewing angle of fig. 4 according to the present invention.

FIG. 7 is a schematic view of a partial axial view of the ratchet and the take-up wheel of the present invention.

FIG. 8 is an axial view of the slider B and the cleaning block of the present invention.

Fig. 9 is an enlarged schematic axial view of fig. 1 at a according to the present invention.

Fig. 10 is an enlarged schematic axial view at B of fig. 1 according to the present invention.

FIG. 11 is an enlarged schematic axial view at C of FIG. 2 in accordance with the present invention.

Fig. 12 is an enlarged schematic axial view at D of fig. 3 according to the present invention.

In the drawings, the corresponding relationship between the component names and the reference numbers is as follows:

1. a base; 101. a supporting seat; 2. a lifting mechanism; 201. a scissor support arm; 202. a sliding block A; 203. a threaded rotating shaft; 204. a sliding block B; 205. a cleaning block; 3. a drive shaft; 4. a transmission shaft A; 5. a transmission shaft B; 6. a connecting mechanism; 601. a support plate A; 602. connecting blocks; 7. a support plate B; 8. a guardrail; 9. a feeding mechanism; 901. a movable pulley; 902. a crank; 903. and (4) ratchet wheels.

Detailed Description

The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in figures 1 to 12:

the invention provides a synchronous lifting structure for construction machinery and construction, which comprises a base 1; the bottom of the base 1 is provided with four universal wheels, and a rectangular baffle is fixed on the base 1 through bolts; the base 1 comprises a supporting seat 101, two T-shaped sliding grooves matched with the sliding blocks B204 are symmetrically formed in the base 1, four L-shaped rectangular blocks are fixed on the base 1 through bolts, threaded holes matched with the supporting seat 101 are formed in the rectangular blocks, threaded rods penetrating through the rectangular blocks are installed on the circular supporting seat 101, when the universal wheel is used, the supporting seat 101 in threaded connection is convenient to adjust supporting height, the rectangular blocks are convenient to replace, the supporting seat 101 can effectively support the universal wheel, and the threads of the supporting seat 101 are convenient to rotate upwards and hide, so that the universal wheel is convenient to move; the base 1 is provided with a lifting mechanism 2, and the other end of the lifting mechanism 2 is connected with a connecting mechanism 6; the lifting mechanism 2 comprises a scissor support arm 201, a sliding block A202, a threaded rotating shaft 203, a sliding block B204 and a cleaning block 205, two connecting seats fixedly connected are arranged on the base 1, one end of the scissor support arm 201 is rotatably connected to the connecting seats, the other end of the scissor support arm 201 is rotatably connected to the sliding block A202 and the sliding block B204, the sliding block A202 and the sliding block B204 are respectively and slidably connected to the support plate A601 and the base 1, a threaded hole matched with the threaded rotating shaft 203 is formed in the sliding block A202, and the cleaning block 205 which is elastically connected is symmetrically arranged on the sliding block B204; the bottom of the sliding block B204 is symmetrically provided with fillets, two round limiting rods are mounted on the rectangular cleaning block 205, the limiting rods are supported through the sliding block B204, the bottom of the cleaning block 205 is matched with the sliding groove of the base 1, and a rectangular groove is formed in the sliding groove of the base 1; the bottom of the connecting mechanism 6 is provided with a driving shaft 3 and a transmission shaft A4, the driving shaft 3 is provided with a labor-saving worm, and the middle position of the transmission shaft A4 is provided with a turbine; the driving shaft 3 is connected with the transmission shaft A4 through a worm gear, a rotating hand wheel is arranged on the driving shaft 3, and the transmission shaft A4 is rotatably connected with the connecting mechanism 6 through a supporting block; a support plate B7 is arranged between the two connecting mechanisms 6, and a transmission shaft B5 which is rotatably connected is arranged on the support plate B7; two guardrails 8 are fixed on the supporting plate B7 through bolts, a protective net is installed on each guardrail 8, and a feeding mechanism 9 is installed in the middle of each guardrail 8.

The circular driving shaft 3 is rotatably connected to the supporting plate A601, two supporting blocks used for supporting the driving shaft 3 are installed on the supporting plate A601, bevel gears are symmetrically installed on the driving shaft A4, the bevel gears are also installed on the threaded rotating shaft 203 and the driving shaft 3, the bevel gears meshed with the driving shaft 3 are installed on the driving shaft B5, when the driving device is used, the threaded rotating shaft 203 and the driving shaft A4 are connected through the bevel gears, the driving shaft A4 is driven to rotate when the driving shaft 3 is rotated, the threaded rotating shaft 203 is driven to rotate by the driving shaft A4, the driving shaft 3 is manually controlled to rotate, when one driving shaft 3 is rotated, the other driving shaft 3 is also rotated under the meshing of the bevel gears, the sliding blocks A202 and the sliding blocks B204 extrude the scissor support arm 201 to ascend and descend, and descend conveniently and independently.

Wherein, coupling mechanism 6 is including backup pad A601 and connecting block 602, two sliding tray that agree with mutually with T shape sliding block A202 are seted up to the bottom symmetry of the backup pad A601 of rectangle, and two sets of rectangular channels have been seted up to the symmetry on the backup pad A601, processing has the rectangular block that agrees with mutually with the rectangular channel on the connecting block 602 of L shape, connecting block 602 passes through the bolt fastening on backup pad A601, the rectangular hole has been seted up on connecting block 602, clamping bolt is installed to one side of connecting block 602, in the use, the rectangular hole on the connecting block 602 makes things convenient for backup pad B7 to install and dock, clamping bolt on the connecting block 602 makes backup pad B7 install the back more firm, the rectangular channel on the backup pad A601 has increased the holding power of connecting.

Wherein, set up conical blowhole on the backup pad B7, and install the slipmat on the backup pad B7, set up on the slipmat with the through-hole that the blowhole was adjusted well, and the symmetry installs the card of two sets of shapes of falling U on the backup pad B7 fast, during the use, the U-shaped card makes things convenient for the joint fast on backup pad A601, and conical blowhole has reduced piling up of water stain, makes things convenient for constructor to make a round trip to walk on backup pad B7.

Wherein, two rectangular channels that agree with mutually with guardrail 8 are seted up to the symmetry on backup pad B7, and set up two rectangular holes that make things convenient for the protection network to install on the guardrail 8, and a set of elastic webbing is installed to guardrail 8's inboard, and during the use, the rectangular channel on the backup pad B7 makes things convenient for guardrail 8's installation, and the supporting force to guardrail 8 that the rectangular channel still increases, and the construction tool is conveniently placed to the elastic webbing.

Wherein, the feeding mechanism 9 comprises a movable pulley 901, a crank 902 and a ratchet 903, the bottom of the movable pulley 901 is provided with a hook, the movable pulley 901 is wound with a steel wire rope, one end of the steel wire rope is fixed on a guardrail 8, the other end of the steel wire rope is wound on the crank 902 to form a force saving arm, the crank 902 is provided with a U-shaped supporting block, the supporting block is fixed on the guardrail 8 through a bolt, the crank 902 penetrates through the ratchet 903 and is connected with a winding wheel, the ratchet 903 is fixed on the winding wheel through a bolt, one side of the ratchet 903 is provided with an elastic part, the elastic part is provided with a hook which is convenient for pulling outwards and fixing, the U-shaped supporting block is provided with a hanging ring which is convenient for fixing the hook, when in use, when the crank 902 is rotated to wind the steel wire rope, the movable pulley 901 can rise, which is convenient for constructors on a supporting plate B7 to independently feed, the arrangement of the, the elastic member on the ratchet 903 facilitates the downward movement of the movable pulley 901.

The specific use mode and function of the embodiment are as follows:

when the device is used, the support seat 101 is firstly rotated upwards to be hidden, the device is pushed to a construction position, the support seat 101 is rotated to support the device, the handle on the driving shaft 3 is rotated to enable the lifting mechanism 2 to descend to the lowest height, the support plate B7 is clamped on the rectangular block of the support plate A601 through the inverted U-shaped clamping block, the clamping bolt on the rectangular block is rotated to clamp and fix the support plate B7, a constructor moves onto the support plate B7, the handle on the driving shaft 3 is rotated to enable the lifting mechanism 2 to ascend after the height of each construction end is up, the sliding block A202 and the sliding block B204 extrude the scissor support arm 201 to ascend and descend, the constructor can independently operate according to the building height, a spare construction tool can be placed on the elastic belt of the guardrail 8 in the construction process, the constructor can move more conveniently on the support plate B7, the cleaning block 205 can effectively scrape off dust in the sliding groove of the base 1 in the sliding process of the, rectangular channel on the base 1 sliding tray makes things convenient for the dust to flow downwards, it stops in the base 1 sliding tray to have reduced the dust, make things convenient for sliding block B204's slip, during the material loading, place the construction material on movable pulley 901's couple, then constructor rotates crank 902 and twines wire rope, when rotating crank 902 with the wire rope winding, movable pulley 901 can rise, make things convenient for the constructor on the backup pad B7 material loading alone, it is more laborsaving when the material loading to set up movable pulley 901, ratchet 903's setting makes the material loading safer a little, during crank 902 antiport, the elastic component on outside pulling ratchet 903, fix the elastic component on guardrail 8 through the couple, antiport crank 902 makes movable pulley 901 descend, make things convenient for the material loading.

The embodiments of the present invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiment was chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. The utility model provides a be used for construction machinery and construction synchronous elevation structure which characterized in that: comprises a base (1); the bottom of the base (1) is provided with four universal wheels, and a rectangular baffle is fixed on the base (1) through bolts; the lifting mechanism (2) is arranged on the base (1), and the other end of the lifting mechanism (2) is connected with the connecting mechanism (6); a driving shaft (3) and a transmission shaft A (4) are installed at the bottom of the connecting mechanism (6), a labor-saving worm is installed on the driving shaft (3), and a turbine is installed in the middle of the transmission shaft A (4); the driving shaft (3) is connected with the transmission shaft A (4) through a worm gear, a rotating hand wheel is installed on the driving shaft (3), and the transmission shaft A (4) is rotatably connected to the connecting mechanism (6) through a supporting block; a support plate B (7) is arranged between the two connecting mechanisms (6), and a transmission shaft B (5) in rotary connection is arranged on the support plate B (7); two guardrails (8) are fixed on the supporting plate B (7) through bolts, a protective net is installed on each guardrail (8), and a feeding mechanism (9) is installed in the middle of each guardrail (8).

2. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: base (1) is including supporting seat (101), the symmetry is seted up two T shape sliding tray that agree with mutually with sliding block B (204) on base (1), and has the rectangular block of four L shapes through the bolt fastening on base (1), sets up the screw hole that agrees with mutually with supporting seat (101) on the rectangular block, installs the threaded rod that runs through the rectangular block on circular shape supporting seat (101).

3. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: elevating system (2) is including scissors support arm (201), sliding block A (202), screw thread axis of rotation (203), sliding block B (204) and cleaning block (205), be equipped with two fixed connection's connecting seat on base (1), and the one end of scissors support arm (201) rotates and connects on the connecting seat, the other end of scissors support arm (201) rotates and connects on sliding block A (202) and sliding block B (204), sliding block A (202) and sliding block B (204) sliding connection respectively are in backup pad A (601), on base (1), set up the screw hole that agrees with mutually with screw thread axis of rotation (203) on sliding block A (202), cleaning block (205) of an elastic connection are installed to the symmetry on sliding block B (204).

4. A synchronous lifting structure for construction machinery and construction work as claimed in claim 3, wherein: the bottom symmetry of sliding block B (204) is equipped with the fillet, and installs two circular gag lever posts on the clean piece (205) of rectangle, and the gag lever post supports through sliding block B (204), and the bottom of clean piece (205) agrees with mutually with the sliding tray of base (1), has seted up the rectangular channel on the sliding tray of base (1).

5. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: the circular driving shaft (3) is rotatably connected to the supporting plate A (601), two supporting blocks used for supporting the driving shaft (3) are installed on the supporting plate A (601), bevel gears are symmetrically installed on the transmission shaft A (4), the bevel gears are also installed on the threaded rotating shaft (203) and the driving shaft (3), and the bevel gears meshed with the driving shaft (3) are installed on the transmission shaft B (5).

6. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: connecting mechanism (6) including backup pad A (601) and connecting block (602), the rectangle the bottom symmetry of backup pad A (601) is seted up two sliding tray that agree with mutually with T shape sliding block A (202), and two sets of rectangular channels have been seted up to the symmetry on backup pad A (601), processing has the rectangular block that agrees with mutually with the rectangular channel on the connecting block (602) of L shape, connecting block (602) are passed through the bolt fastening on backup pad A (601), the rectangular hole has been seted up on connecting block (602), clamping bolt is installed to one side of connecting block (602).

7. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: the supporting plate B (7) is provided with a conical sewage discharge hole, the supporting plate B (7) is provided with an anti-slip pad, the anti-slip pad is provided with a through hole which is aligned with the sewage discharge hole, and the supporting plate B (7) is symmetrically provided with two groups of inverted U-shaped clamping blocks.

8. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: two rectangular channels matched with the guardrails (8) are symmetrically formed in the supporting plate B (7), two rectangular holes facilitating installation of the protective net are formed in the guardrails (8), and a set of elastic belt is installed on the inner side of each guardrail (8).

9. The synchronous lifting structure for construction machinery and construction work of claim 1, wherein: the feeding mechanism (9) comprises a movable pulley (901), a crank (902) and a ratchet wheel (903), a hook is installed at the bottom of the movable pulley (901), a steel wire rope is wound on the movable pulley (901), one end of the steel wire rope is fixed on a guardrail (8), the other end of the steel wire rope is wound on the crank (902) to form a force saving arm, a supporting block of a U-shaped structure is installed on the crank (902), the supporting block is fixed on the guardrail (8) through a bolt, the crank (902) penetrates through the ratchet wheel (903) to be connected with a winding wheel, the ratchet wheel (903) is fixed on the winding wheel through a bolt, an elastic part is installed on one side of the ratchet wheel (903), a hook convenient to pull outwards and fix is installed on the elastic part, and a hanging ring convenient for fixing the hook is installed on the U-.