CN115198677A

CN115198677A - Over-and-under type portal convenient to adjust

Info

Publication number: CN115198677A
Application number: CN202210992551.5A
Authority: CN
Inventors: 毛学水
Original assignee: Ping An Traffic Construction Engineering Co Ltd
Current assignee: Ping An Traffic Construction Engineering Co Ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-10-18
Anticipated expiration: 2042-08-18
Also published as: CN115198677B

Abstract

The utility model relates to an over-and-under type portal convenient to adjust relates to the technical field of portal, including the crossbeam with set up two sets of strutting arrangement that support the crossbeam at crossbeam both ends, strutting arrangement includes base, plummer and telescopic machanism. This application is through fixed connection spliced pole on the base, telescopic machanism sets up on the base and is located the removal intracavity and is connected with the plummer, the plummer supports the crossbeam, when needs carry out the dismouting to the signboard on the portal, telescopic machanism starts to drive the plummer and moves down, the plummer moves down and drives the crossbeam and move down, the crossbeam moves down to the high back of pasting near ground, the staff can carry out dismouting work to the signboard on the crossbeam subaerial, after the dismouting is accomplished, it can with the crossbeam removal to appointed high department to start telescopic machanism, whole work flow convenient and fast, it ascends a height work with the help of equipment to need not the staff, the efficiency and the security of work have been improved.

Description

Over-and-under type portal convenient to adjust

Technical Field

The application relates to the technical field of gantries, in particular to an elevation type gantry convenient to adjust.

Background

Modern highway generally can be built for two-way four-lane when building to make the whole width broad of road, and because the large-scale freight train is more on the highway, consequently set up the signboard and lead to the vehicle driver that is located the road middle part easily to see the signboard clearly in highway both sides, increased the risk that takes place the traffic accident. In order to make drivers in all lanes clearly see the signboard, the problem is generally solved by arranging a portal frame on a highway and then arranging the signboard on the portal frame.

Among the correlation technique, can refer to the chinese utility model patent that the grant bulletin number is CN202482785U, it discloses a traffic sign portal, including stand, crossbeam and basic lower margin, the crossbeam is truss structure, comprises upper chord, lower chord and web member, and upper chord and lower chord are connected to the web member, and the cross-section of crossbeam is the rectangle, and the stand setting is in the both sides of crossbeam, connects crossbeam and basic lower margin, and the traffic sign is hung and is put on the crossbeam. Neotype portal structure has adopted the truss-like structure, compares with current traffic portal structure, under the equal atress (including internal force etc.) circumstances, span increases to 4 lanes, and its intensity, rigidity and stability can both reach the requirement, and safe and reliable is in the portal of the same stride footpath height, and this utility model saves steel 50% -60%. This novel simple structure, easy to process can effectually reduce the processing cost of product.

However, after the portal frame is built, the upright columns and the cross beams are fixed, and the height and the span of the portal frame are large, so that when a worker hangs the signboard on the portal frame, the signboard needs to be dismounted and mounted at the height of the cross beams by means of a climbing facility, and the portal frame is low in working efficiency and high in danger.

Disclosure of Invention

In order to facilitate the signboard to the portal to carry out the dismouting, this application provides a over-and-under type portal convenient to adjust.

The application provides a pair of over-and-under type portal convenient to adjust adopts following technical scheme:

the utility model provides a over-and-under type portal convenient to adjust, includes the crossbeam and sets up two sets of strutting arrangement that support the crossbeam at crossbeam both ends, strutting arrangement includes:

the base is arranged on the ground;

the connecting column is arranged on the base;

the bearing table is vertically arranged on the connecting column in a sliding manner and is used for supporting the cross beam;

the telescopic mechanism, vertical removal chamber has been seted up to spliced pole inside, telescopic mechanism sets up on the base and is located the removal intracavity, telescopic mechanism is connected with the plummer, the plummer rises or descends under telescopic mechanism's effect.

Through adopting the above technical scheme, fixed connection spliced pole on the base, telescopic machanism sets up on the base and is located the removal intracavity and is connected with the plummer, the plummer supports the crossbeam, when needs carry out the dismouting to the signboard on the portal, telescopic machanism starts to drive the plummer and moves down, the plummer moves down and drives the crossbeam and move down, the crossbeam moves down to the height back of being close to ground, the staff can carry out dismouting work to the signboard on the crossbeam subaerial, after the dismouting was accomplished, it can with the crossbeam removal to appointed high department to start telescopic machanism, whole work flow convenient and fast, need not the staff and ascend a height the work with the help of equipment, the efficiency and the security of work have been improved.

Optionally, the relative both sides wall in the spliced pole horizontal direction comprises a plurality of connecting plates, the lateral wall in the other both sides in the spliced pole horizontal direction is the tarpaulin, telescopic machanism includes:

the scissor-type lifting platform is arranged on the base and positioned in the moving cavity, and the bearing platform is arranged on the scissor-type lifting platform;

the folding plates are arranged between two adjacent connecting plates;

the actuating lever, the actuating lever setting is just connected with the folded sheet on cutting fork elevating platform, when cutting fork elevating platform and descend, the folded sheet is folded under the actuating lever effect and is made two adjacent connecting plates conflict together.

By adopting the technical scheme, the scissor-fork type lifting platform is started to drive the bearing platform to move up and down and simultaneously drive the driving rod to move, the driving rod moves to drive the folding plate to move, and when the scissor-fork type lifting platform is lifted, the driving rod moves to drive the folding plate to be in an upright state, so that the folding plate supports the bearing platform and is matched with waterproof cloth on the other two side walls to seal the side walls of the connecting column; when the scissor-fork type lifting platform descends, the plurality of folding plates are folded under the driving of the driving rod, so that the descending of the bearing platform is not influenced.

Optionally, the scissor lift platform comprises:

the hydraulic cylinder is arranged on the base;

the platform is connected with the top end of the waterproof cloth and the two connecting plates at the highest height;

the lifting unit is provided with a plurality of hydraulic cylinders and is connected with the platform, and the lifting unit drives the platform to move under the action of the hydraulic cylinders.

By adopting the technical scheme, the hydraulic cylinder is started to drive the lifting unit to move, the lifting unit moves to drive the platform to move, and the platform moves to drive the bearing platform and the cross beam to move, so that the height of the cross beam can be adjusted and controlled by controlling the hydraulic cylinder.

Optionally, the lift unit includes first scissors pole and second scissors pole, is located the bottom first scissors pole among the lift unit rotates and sets up on the base, the second scissors pole rotates and the level slides and sets up on the base, the platform sets up on high highest lift unit, the first scissors pole on the highest lift unit rotates and sets up on the platform, the second scissors pole rotates and the level slides and sets up on the platform, first scissors pole and second scissors pole among the lift unit rotate through the pivot and link together, the pneumatic cylinder is connected with the pivot, actuating lever one end sets up in the pivot, the actuating lever other end is connected with the folded sheet.

By adopting the technical scheme, the hydraulic cylinder is started to drive the rotating shaft to move, the rotating shaft moves to drive the first scissor rod and the second scissor rod to rotate, and the first scissor rod and the second scissor rod rotate to drive the platform to move; the pivot removes and drives the actuating lever removal simultaneously, and the actuating lever removes and drives the folded sheet and removes to drive the folded sheet cooperation platform and go up and down and fold or upright when realizing the pivot removal.

Optionally, the folding plate includes:

the two rotating plates are respectively and rotatably connected to the two adjacent connecting plates;

the connecting frame is arranged on the rotating plate;

the rotating rods are rotatably arranged on the connecting frames, and the connecting frames on the two rotating plates share one rotating rod.

Through adopting above-mentioned technical scheme, rotate the bull stick and set up on the link of two adjacent commentaries on classics boards for two adjacent commentaries on classics boards all use the bull stick to rotate as the axle when rotating, thereby realized the rotation work of connecting plate, and guaranteed adjacent connecting plate mutual noninterference when rotating.

Optionally, the platform and the plummer are detachably connected through an assembly, the assembly includes:

one end of the assembling bolt vertically penetrates through the platform and the bearing platform in sequence and extends above the bearing platform, and the head of the assembling bolt abuts against the platform;

the adjusting nut is in threaded connection with the assembling bolt and is positioned between the platform and the bearing table;

and the assembling nut is in threaded connection with the assembling bolt and is tightly abutted against the bearing table.

By adopting the technical scheme, the assembling nut is screwed to be separated from the assembling bolt, the assembling bolt is taken down, so that the fixed connection between the bearing table and the platform is removed, the bearing table can be replaced according to the size of the cross beam, after the replacement is finished, the assembling bolt is moved to vertically and upwards penetrate through the platform and the bearing table, and the assembling nut is screwed to be tightly abutted against the upper surface of the bearing table to fix the bearing table; the adjusting nut is arranged between the bearing platform and the platform in a cushioning mode, and the probability of abrasion caused by long-term rigid contact between the bearing platform and the platform is reduced.

Optionally, the cross beam is a truss beam, and the cross beam includes:

the two upright columns are respectively arranged on the two bearing tables;

the two ends of the upper chord and the two ends of the lower chord are respectively connected with the two upright posts, the upper chord and the lower chord are in a horizontal state and are axially parallel, and the upper chord is positioned above the lower chord;

the web members are arranged between the upper chord and the lower chord and are connected with the upper chord and the lower chord, and the web members are arranged in a pairwise crossing manner.

Through adopting above-mentioned technical scheme, with two stand fixed connection on two plummer, the equal fixed connection of upper chord and lower chord is on two stands, two liang of alternately fixed connection of a plurality of web members are between upper chord and lower chord to through this kind of truss structure lightened the holistic weight of crossbeam, and guaranteed crossbeam overall structure's intensity again when lightening weight through setting up crisscross web member.

Optionally, the stand passes through fixed subassembly and can dismantle the setting on the plummer, fixed subassembly includes:

the fixing plate is arranged on the upright post and is abutted against the surface of the bearing table;

the positioning frame is arranged on the bearing table, and the fixing plate is positioned in the positioning frame;

and the fixing bolt vertically penetrates through the fixing plate downwards and is in threaded connection with the bearing table.

Through adopting above-mentioned technical scheme, when installing the stand, remove the stand and drive the fixed plate and move into the locating frame, then twist and move fixing bolt and pass fixed plate and plummer threaded connection and fixing bolt head and support tightly on the fixed plate to the location and the fixed work of stand position on the plummer have been realized.

Optionally, the locating frame is provided with a plurality of apron of last rotation, and is a plurality of the apron concatenation is in the same place and is sheltered from the fixed plate, be provided with the handle on the apron.

Through adopting above-mentioned technical scheme, rotate on the posting and connect a plurality of laps, under the normal condition, the apron covers the fixed plate to reduced fixing bolt and exposed in the environment for a long time and rusty probability, and connect the handle on the apron, made the staff when dismantling the fixed plate, be convenient for open the apron, improved work efficiency.

Optionally, a bubble level meter is arranged on the bearing table.

Through adopting above-mentioned technical scheme, set up the bubble spirit level on the plummer for the staff can master the horizontality on plummer surface through observing the bubble spirit level, when plummer surface slope, can adjust the levelness of plummer through twisting adjusting nut, thereby has guaranteed the holistic levelness of crossbeam through the level of guaranteeing the plummer.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the connecting column is fixedly connected to the base, the telescopic mechanism is arranged on the base, is positioned in the moving cavity and is connected with the bearing table, the bearing table supports the cross beam, when the signboard on the portal frame needs to be disassembled and assembled, the telescopic mechanism is started to drive the bearing table to move downwards, the bearing table moves downwards to drive the cross beam to move downwards, the cross beam moves downwards to a height close to the ground, a worker can disassemble and assemble the signboard on the cross beam on the ground, after the disassembly and assembly are completed, the telescopic mechanism is started to move the cross beam to a specified height, the whole working process is convenient and rapid, the worker does not need to perform climbing work with equipment, and the working efficiency and safety are improved;

2. the hydraulic cylinder is started to drive the lifting unit to move, the lifting unit moves to drive the platform to move, and the platform moves to drive the bearing table and the cross beam to move, so that the height of the cross beam can be adjusted and controlled by controlling the hydraulic cylinder;

3. through setting up the bubble spirit level on the plummer for the staff can master the horizontality on plummer surface through observing the bubble spirit level, when plummer surface slope, can adjust the levelness of plummer through twisting adjusting nut, thereby has guaranteed the holistic levelness of crossbeam through the level of guaranteeing the plummer.

Drawings

FIG. 1 is a schematic perspective view of the present application;

FIG. 2 is a schematic view of the support device of the present application;

FIG. 3 is an enlarged schematic view of section A of FIG. 2;

FIG. 4 is an enlarged schematic view of section B of FIG. 2;

FIG. 5 is an enlarged schematic view of section C of FIG. 2;

fig. 6 is a schematic structural view of the fixing assembly of the present application.

Reference numerals: 1. a cross beam; 11. a moving chamber; 12. a connecting plate; 13. waterproof cloth; 2. a support device; 21. a base; 22. connecting columns; 23. a bearing table; 24. a telescoping mechanism; 25. a scissor lift platform; 251. a hydraulic cylinder; 252. a platform; 253. a lifting unit; 254. a first scissor lever; 255. a second scissor lever; 256. a rotating shaft; 26. folding the board; 261. rotating the plate; 262. a connecting frame; 263. a rotating rod; 27. a drive rod; 3. assembling the components; 31. assembling a bolt; 32. adjusting the nut; 33. assembling a nut; 34. a bubble level; 41. a column; 42. an upper chord; 43. a lower chord; 44. a web member; 5. a fixing assembly; 51. a fixing plate; 52. a positioning frame; 53. fixing the bolt; 54. a cover plate; 55. a handle.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

The embodiment of the application discloses over-and-under type portal convenient to adjust.

Referring to fig. 1, the lifting type portal frame convenient to adjust comprises a cross beam 1 and two groups of supporting devices 2 which are arranged at two ends of the cross beam 1 and support the cross beam 1.

Referring to fig. 1 and 2, the supporting device 2 includes a base 21, a connection column 22, a bearing table 23, and a telescopic mechanism 24. The base 21 is fixedly connected to the ground. The connection post 22 is fixedly connected to the upper surface of the base 21. The connecting column 22 is internally provided with a vertical moving cavity 11. The telescoping mechanism 24 is arranged on the base 21 and located in the moving cavity 11, and the bearing platform 23 is connected with the telescoping mechanism 24 and vertically moves under the action of the telescoping mechanism 24.

Referring to fig. 1 and 2, both opposite side walls of the connecting column 22 in the same horizontal direction are formed by a plurality of connecting plates 12, and both opposite side walls of the connecting column 22 in the other horizontal direction are formed by waterproof cloths 13.

Referring to fig. 2 and 3, telescoping mechanism 24 includes scissor lift 25, folding plate 26, and drive rod 27. A scissor lift 25 is fixedly attached to the upper surface of base 21 and is located within the movement chamber 11. Scissor lift 25 includes a hydraulic cylinder 251, a platform 252, and a lift unit 253.

Referring to fig. 2 and 3, the lifting unit 253 is vertically disposed in the moving chamber 11, and the lifting unit 253 includes a first scissor bar 254 and a second scissor bar 255, and the first scissor bar 254 and the second scissor bar 255 intersect with each other and the intersection points are rotatably connected together by a rotating shaft 256. A lifting unit 253 which is positioned on the upper surface of the base 21 and connected with the base 21, wherein the bottom end of the first scissor rod 254 is rotatably connected on the upper surface of the base 21; the bottom end of second scissor bar 255 rotates and is slidably mounted on the upper surface of base 21 in a direction toward and away from the bottom end of first scissor bar 254. The top ends of the first scissor rod 254 and the second scissor rod 255 are rotatably connected with the second scissor rod 255 and the first scissor rod 254 of the upper lifting unit 253 respectively.

Referring to fig. 3 and 4, the bottom end of the hydraulic cylinder 251 is rotatably connected to the upper surface of the base 21, and the piston rod of the hydraulic cylinder 251 is fixedly connected to the rotating shaft 256. The platform 252 is connected to a lifting unit 253 at the highest height. The top end of the first scissor bar 254 of the lifting unit 253 at the top end is rotatably connected to the lower surface of the platform 252, and the second scissor bar 255 is slidably mounted on the lower surface of the platform 252 in a direction approaching and departing from the bottom end of the first scissor bar 254.

Referring to fig. 2 and 5, the folding plate 26 is located between two adjacent vertical connecting plates 12 and is connected to the rotating shaft 256 through the driving lever 27. The folding plate 26 includes two rotating plates 261, a connecting frame 262 and a rotating rod 263. One end of each of the two rotating plates 261 is rotatably connected to a side wall of one of the two adjacent connecting plates 12 close to the moving cavity 11, and the other ends of the two rotating plates 261 abut against each other. The link frame 262 is fixedly connected to a side wall of the rotating plate 261 remote from the moving chamber 11. The rotating rod 263 is rotatably installed on the connecting frame 262. The connecting frames 262 on the two rotating plates 261 share one rotating rod 263. One end of the driving rod 27 is rotatably connected to the rotating shaft 256, and the other end of the driving rod 27 is rotatably connected to a side wall of the rotating plate 261 near the rotating shaft 256.

Referring to fig. 3 and 5, the hydraulic cylinder 251 is activated to drive the rotating shaft 256 to move, the rotating shaft 256 moves to drive the first scissor rod 254 and the second scissor rod 255 to rotate, and the first scissor rod 254 and the second scissor rod 255 rotate to drive the platform 252 to lift. When the first rotating shaft 256 moves and simultaneously drives the driving rod 27 to move, the driving rod 27 moves and drives the rotating plates 261 to rotate, and when the first scissor lever 254 and the second scissor lever 255 drive the platform 252 to descend, the two rotating plates 261 are folded under the action of the driving rod 27; when the first scissor bar 254 and the second scissor bar 255 drive the platform 252 to ascend, the two rotating plates 261 are vertically abutted against each other by the driving rod 27.

Referring to fig. 1 and 2, the carrier 23 is detachably attached to the platform 252 by the mounting assembly 3, and the mounting assembly 3 includes a mounting bolt 31, an adjusting nut 32, and a mounting nut 33. One end of the assembling bolt 31 vertically and upwards sequentially penetrates through the platform 252 and the bearing platform 23 to extend above the bearing platform 23, and the head part of the assembling bolt abuts against the lower surface of the platform 252. The adjusting nut 32 is screwed onto the mounting bolt 31 and is located between the platform 252 and the carrier table 23. The mounting nut 33 is screwed onto the mounting bolt 31 and abuts against the upper surface of the carrier table 23. The bubble level 34 is fixedly connected to the upper surface of the bearing table 23.

Referring to fig. 1, the cross member 1 is disposed on a bearing table 23. The cross beam 1 is a truss beam, and the cross beam 1 comprises two upright columns 41, an upper chord 42, a lower chord 43 and web members 44. The upright 41 is detachably connected to the carrier table 23 by means of a fastening assembly 5. The upper chord 42 and the lower chord 43 are fixedly connected to two opposite side walls of the two upright posts 41, and the upper chord 42 is positioned above the lower chord 43. The web members 44 are provided in plural and connected at both ends thereof to the upper chord 42 and the lower chord 43, respectively, and the web members 44 are fixedly connected between the upper chord 42 and the lower chord 43 in a pairwise crossing manner.

Referring to fig. 1 and 6, the fixing assembly 5 includes a fixing plate 51, a positioning frame 52, and a fixing bolt 53. The fixed plate 51 is fixedly attached to the lower surface of the column 41. The positioning frame 52 is fixedly connected to the upper surface of the carrier 23. When the column 41 is connected to the supporting platform 23, the fixing plate 51 abuts against the upper surface of the supporting platform 23 and is located in the positioning frame 52, and the side wall of the fixing plate 51 abuts against the inner side wall of the positioning frame 52. The fixing bolt 53 vertically passes through the fixing plate 51 downwards to be in threaded connection with the bearing table 23, and the head of the fixing bolt 53 abuts against the upper surface of the fixing plate 51.

Referring to fig. 2 and 6, cover plates 54 are rotatably connected to four sides of the upper surface of the positioning frame 52, the four cover plates 54 shield the upper opening of the positioning frame 52 when rotating to the horizontal direction, and a handle 55 is fixedly connected to the upper surface of the cover plate 54.

The working principle of the embodiment of the application is as follows:

when the signboard on the beam 1 needs to be disassembled and assembled, the hydraulic cylinder 251 is started to drive the rotating shaft 256 to rotate, the rotating shaft 256 rotates to drive the first scissor rod 254 and the second scissor rod 255 to rotate, the first scissor rod 254 and the second scissor rod 255 rotate to drive the platform 252 to descend, meanwhile, the rotating shaft 256 moves to drive the driving rod 27 to move, and the driving rod 27 drives the two rotating plates 261 between the adjacent connecting plates 12 to be folded. Platform 252 descends to contradict each other between the adjacent connecting plate 12, and platform 252 descends and drives crossbeam 1 position decline to be convenient for the staff and directly carry out the dismouting to the signboard on crossbeam 1 subaerial, after the dismouting was accomplished, pneumatic cylinder 251 started to drive crossbeam 1 and moves back to original high department.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an over-and-under type portal convenient to adjust which characterized in that: including crossbeam (1) and set up two sets of strutting arrangement (2) that support crossbeam (1) at crossbeam (1) both ends, strutting arrangement (2) include:

a base (21), the base (21) being disposed on a ground surface;

a connection column (22), the connection column (22) being provided on the base (21);

the bearing table (23), the bearing table (23) is vertically arranged on the connecting column (22) in a sliding mode, and the bearing table (23) is used for supporting the cross beam (1);

telescopic machanism (24), vertical removal chamber (11) have been seted up to spliced pole (22) inside, telescopic machanism (24) set up on base (21) and are located and remove chamber (11), telescopic machanism (24) are connected with plummer (23), plummer (23) rise or descend under telescopic machanism (24) effect.

2. The easy-to-adjust lift mast of claim 1, wherein: the relative both sides wall on spliced pole (22) horizontal direction comprises a plurality of connecting plates (12), the other both sides lateral wall on spliced pole (22) horizontal direction is tarpaulin (13), telescopic machanism (24) include:

the scissor type lifting platform (25) is arranged on the base (21) and positioned in the moving cavity (11), and the bearing platform (23) is arranged on the scissor type lifting platform (25);

the folding plates (26) are arranged between two adjacent connecting plates (12);

the driving rod (27), the driving rod (27) sets up on scissors fork elevating platform (25) and is connected with folded plate (26), when scissors fork elevating platform (25) descend, folded plate (26) are folded up under driving rod (27) effect and are made two adjacent connecting plates (12) conflict together.

3. The easy-to-adjust lift mast of claim 2, wherein: the scissor lift (25) comprises:

a hydraulic cylinder (251), the hydraulic cylinder (251) being provided on a base (21);

the platform (252), the said platform (252) is connected with two pieces of connecting plates (12) of the top and highest position of the tarpaulin (13);

the lifting units (253) are arranged in a plurality of numbers and are connected with the hydraulic cylinder (251) and the platform (252), and the lifting units (253) drive the platform (252) to move under the action of the hydraulic cylinder (251).

4. The easy-to-adjust lift mast of claim 3, wherein: the lifting unit (253) comprises a first scissor rod (254) and a second scissor rod (255), the first scissor rod (254) in the lifting unit (253) at the bottommost end is rotatably arranged on the base (21), and the second scissor rod (255) is rotatably and horizontally arranged on the base (21) in a sliding manner; the platform (252) is arranged on a lifting unit (253) with the highest height, a first scissor rod (254) on the lifting unit (253) is rotatably arranged on the platform (252), a second scissor rod (255) is rotatably arranged on the platform (252) in a horizontal sliding manner, the first scissor rod (254) and the second scissor rod (255) in the lifting unit (253) are rotatably connected together through a rotating shaft (256), a hydraulic cylinder (251) is connected with the rotating shaft (256), one end of a driving rod (27) is arranged on the rotating shaft (256), and the other end of the driving rod (27) is connected with a folding plate (26).

5. The easy-to-adjust lift mast of claim 2, wherein: the folding plate (26) comprises:

the two rotating plates (261) are respectively and rotatably connected to the two adjacent connecting plates (12);

a link frame (262), the link frame (262) being disposed on the rotating plate (261);

the rotating rod (263) is rotatably arranged on the connecting frames (262), and the connecting frames (262) on the two rotating plates (261) share one rotating rod (263).

6. The easy-to-adjust lift mast of claim 3, wherein: the platform (252) and the bearing platform (23) are detachably connected through an assembly component (3), and the assembly component (3) comprises:

one end of the assembling bolt (31) vertically penetrates through the platform (252) and the bearing table (23) in sequence and extends above the bearing table (23), and the head of the assembling bolt (31) abuts against the platform (252);

the adjusting nut (32), the said adjusting nut (32) is screwed on the assembly bolt (31) and located between the platform (252) and the plummer (23);

and the assembling nut (33), wherein the assembling nut (33) is in threaded connection with the assembling bolt (31) and is tightly propped against the bearing table (23).

7. The easy-to-adjust lift mast of claim 1, wherein: crossbeam (1) is the truss girder, crossbeam (1) includes:

the two upright columns (41), the two upright columns (41) are respectively arranged on the two bearing tables (23);

the two ends of the upper chord (42) and the two ends of the lower chord (43) are respectively connected with the two upright posts (41), the upper chord (42) and the lower chord (43) are both in a horizontal state and are axially parallel, and the upper chord (42) is positioned above the lower chord (43);

web member (44), web member (44) are provided with a plurality of roots, and are a plurality of web member (44) set up between last chord (42) and lower chord (43) and all be connected with last chord (42) and lower chord (43), two liang of crisscross settings of web member (44).

8. The easy-to-adjust lift mast of claim 7, wherein: stand (41) can dismantle the setting on plummer (23) through fixed subassembly (5), fixed subassembly (5) include:

the fixing plate (51) is arranged on the upright post (41) and abutted against the surface of the bearing table (23);

the positioning frame (52), the positioning frame (52) is arranged on the bearing table (23), and the fixing plate (51) is positioned in the positioning frame (52);

and the fixing bolt (53) vertically penetrates through the fixing plate (51) downwards and is in threaded connection with the bearing table (23).

9. The easy-to-adjust lift mast of claim 8, wherein: the positioning frame (52) is rotatably provided with a plurality of cover plates (54), the cover plates (54) are spliced together to cover the fixing plate (51), and the cover plates (54) are provided with handles (55).

10. The easy-to-adjust lift mast of claim 6, wherein: and a bubble level meter (34) is arranged on the bearing table (23).