CN115126207A

CN115126207A - Movable scaffold

Info

Publication number: CN115126207A
Application number: CN202210832212.0A
Authority: CN
Inventors: 杨琴; 贺志荣; 汪跃飞; 贺小强; 俞宽裕; 李骏; 王启超
Original assignee: Shenzhen China Railway Second Bureau Engineering Co Ltd
Current assignee: Shenzhen China Railway Second Bureau Engineering Co Ltd
Priority date: 2022-07-15
Filing date: 2022-07-15
Publication date: 2022-09-30

Abstract

The application relates to the technical field of cantilever scaffold disassembly and assembly, in particular to a movable scaffold, which comprises a cantilever steel beam fixedly installed on a building wall, wherein the cantilever steel beam is fixedly provided with a same supporting plate, a plurality of vertically arranged vertical rods are inserted in the supporting plate, a plurality of horizontal frames horizontally arranged on the vertical rods are sleeved on the vertical rods in a sliding mode in the vertical direction, and meanwhile, the horizontal frames are arranged into a plurality of horizontal frames which are sequentially overlapped and are all sleeved on the vertical rods; and each transverse frame is also provided with a locking part which enables each transverse frame to be locked at different installation heights on the vertical rod. This application has through can reciprocate and each crossbearer of locking replaces the effect of original big, little horizontal pole that needs the dismouting one by one, has the big and not enough problem of stability of work load when improving the scaffold and putting up.

Description

Movable scaffold

Technical Field

The application relates to a scaffold frame dismouting technical field that encorbelments especially relates to a movable scaffold frame.

Background

The scaffold is in order to guarantee that the building work progress goes on smoothly and the work platform who sets up, and the common scaffold frame that has to fall to the ground and the scaffold frame of encorbelmenting etc. wherein the scaffold frame of encorbelmenting is the simple and easy facility that uses in a high-rise building, divide into mode such as every layer is once encorbelmented, the multilayer is encorbelmented. The installation and the removal of the overhanging scaffold are indispensable working links in modern high-altitude construction operation.

Among the correlation technique, when setting up the scaffold frame of encorbelmenting, need earlier fix girder steel and the building of encorbelmenting, then with the pole setting in proper order vertically install the girder steel that encorbelments in proper order and stretch out the outside one end of building, later through the big horizontal pole of pipe clamp layering installation in the pole setting to install a plurality of little horizontal poles in proper order on the big horizontal pole on every layer, lay the scaffold board on the little horizontal pole on every layer at last, form scaffold frame body.

In view of the above related technologies, the inventor thinks that the number of the small cross bars required in the process of layer assembly is large, the connecting points of the small cross bars and the large cross bars need to be installed and fixed one by one, the workload is large, and the horizontal plane formed by each layer of small cross bars can be inclined, so that the scaffold board is inclined, and the stability and the safety are affected.

Disclosure of Invention

Have the big and stability not enough problem of work load when improving the scaffold and build, this application provides a movable scaffold.

The application provides a movable scaffold frame adopts following technical scheme:

a movable scaffold comprises an overhanging steel beam fixedly mounted on a building wall, wherein the same supporting plate is fixedly mounted on the overhanging steel beam, a plurality of vertically arranged vertical rods are inserted in the supporting plate, a plurality of horizontal frames which are horizontally arranged are sleeved on the vertical rods in a sliding mode in the vertical direction, the horizontal frames are arranged in a plurality of numbers, and the horizontal frames are sequentially overlapped and are all sleeved on the vertical rods; and each transverse frame is also provided with a locking part which enables each transverse frame to be locked at different mounting heights on the vertical rod.

By adopting the technical scheme, when the cantilever scaffold is installed, the prefabricated crossbearers are locked and installed on different heights of the vertical rods to replace the original installation layers formed by installing or disassembling the large cross rods and the small cross rods one by one, so that the steps of installing the large cross rods and the small cross rods on site are simplified, the workload of installing and disassembling the scaffold on site is reduced, and the working efficiency is improved; in addition, each layer of cross frame is sleeved on all the vertical rods simultaneously, so that the cross frame can be kept horizontal all the time when moving, the problems of safety and stability caused by the inclination of the scaffold boards are also reduced, and the problems of large workload and insufficient stability when the scaffold is built are solved.

Optionally, the locking portion includes an insertion block slidably disposed in the cross frame, the upright rod is uniformly provided with a plurality of locking grooves for defining the mounting position of each layer of the cross frame, the insertion block can be inserted into the locking grooves, and meanwhile, the insertion block is further provided with a locking spring for driving the insertion block to be inserted into the locking grooves; and the upper surface that the inserted block inserted locking groove one end is seted up and is used for forcing the inserted block to shrink into the arc surface in the crossbearer, the lower surface butt that the inserted block inserted locking groove one end is in locking inslot wall.

By adopting the technical scheme, when the cross frame moves upwards, the arc surface is abutted against the inner wall of the upper part of the locking groove, the insertion block can be completely retracted into the cross frame under the guidance of the arc surface, and the cross frame can continue to move upwards; on the contrary, when the cross frame moves downwards, the lower surface of the insertion block can be inserted and abutted to the inner wall of the lower part of the locking groove to be limited, so that the installation position of the cross frame is locked; the cross frame can only move upwards and cannot move downwards after being inserted into the locking groove; before the installation, can pile up to the pole setting bottom earlier with all crossbearers that need the installation, again in proper order from last to installing each crossbearer promotion respectively extremely relative mounting height and locking to simplified the step of on-the-spot installation big horizontal pole and little horizontal pole, work load when having reduced the installation scaffold frame promotes work efficiency.

Optionally, the same chain is connected between every two adjacent cross frames at the same time, and the length of the chain is equal to the installation height difference between every two adjacent cross frames.

By adopting the technical scheme, all cross frames are connected through the chains, and when the cross frame at the uppermost layer is lifted through crane equipment such as a tower crane, all cross frames can be lifted together through the traction of the chains; when the cross frames on the uppermost layer are lifted to the corresponding mounting heights, all the cross frames can be driven to reach the corresponding mounting heights and are locked through the locking parts, the lifting steps of the cross frames are simplified, workload when the scaffold is mounted is reduced, and working efficiency is improved.

Optionally, a linkage rod is horizontally and movably arranged in the cross frame, a first slot for the insertion of the insertion block is formed in the linkage rod along the vertical direction, the horizontal diameter of the first slot is greater than that of the insertion block, and the difference between the horizontal diameters of the first slot and the insertion block is not less than the distance between the insertion block and the locking slot; and meanwhile, a driving piece for driving the linkage rod to slide and leave the locking groove is further arranged in the transverse frame, and the insertion block is abutted against the inner wall, close to the vertical rod, of the first slot when the linkage rod slides.

By adopting the technical scheme, when the cross frame moves upwards for installation, and the inserting block passes through the locking groove in the upwards moving process, the first slot can provide a sliding distance for the inserting block to retract into the cross frame, and the inserting block can be completely retracted into the cross frame; when the cross frame needs to be disassembled, the driving piece can be driven by external force to move downwards, so that the linkage rod and the insertion block are driven to slide and be away from the vertical rod, the insertion block can be unlocked and locked in the locking groove, and the disassembly of the cross frame is facilitated.

Optionally, the driving part is arranged as a driving rod which is arranged in the cross frame and slides along the vertical direction, a driving block which is used for driving the linkage rod to slide transversely is fixedly arranged on the driving rod, meanwhile, a sliding hole is formed in the linkage rod along the vertical direction, the upper portion, far away from the inner wall of the insertion block, of the sliding hole is provided with a guide surface which is used for forcing the linkage rod to slide and far away from the insertion block, and the driving block can be abutted against the guide surface.

Through adopting above-mentioned technical scheme, can drive the drive block butt in the spigot surface when the actuating lever moves down to push the gangbar under the guiding action of spigot surface and slide and keep away from the pole setting, thereby make the inserted block slide and leave the locking groove, simple structure and practicality.

Optionally, a protruding block is fixedly arranged on the side wall of the driving rod, a compression spring for bearing the weight of the driving rod is fixedly arranged on the lower surface of the protruding block, and one end of the compression spring, which is far away from the protruding block, is fixed to the cross frame.

By adopting the technical scheme, when the cross frame moves upwards, the compression spring can enable the driving rod to maintain the initial state before installation, and the probability that the driving rod moves downwards due to dead weight in the process of moving upwards the cross frame to cause the sliding of the linkage rod and the incapability of locking the cross frame and the vertical rod is reduced.

Optionally, the bottom end of the driving rod is flush with the bottom of the cross frame when the cross frame and the vertical rod are locked, the top end of the driving rod penetrates out of the cross frame and is fixedly provided with a pressed plate, and the pressed plate can be abutted to the lower surface of the upper cross frame.

By adopting the technical scheme, when the upper-layer cross frame falls down, the lower surface of the upper-layer cross frame can apply pressure on the pressed plate, so that the pressed plate and the driving rod can be driven to move downwards, and the inserted block and the locking groove can be unlocked by the downwards-moving driving rod; therefore, all the cross frames can fall down in sequence, and the locking state of the cross frame of the layer can be released when each cross frame falls down one layer until the cross frames fall down to the supporting plate of the lowest layer; the cross frame is more convenient to disassemble, the workload of disassembling the scaffold on site is reduced, and the working efficiency is improved.

Optionally, a connecting rod is hinged to the vertical side wall of the cross frame, and one end of the linkage rod can slide out of the cross frame and abut against the bottom end of the connecting rod; and meanwhile, the top of the connecting rod is provided with a buckling block on the side wall facing the direction of the cross frame, and the buckling block can be buckled on the upper-layer cross frame after the connecting rod rotates.

By adopting the technical scheme, when the scaffold is disassembled and assembled, the upper-layer cross frame falls to drive the pressed plate and the driving rod to move downwards, the locking state of the upper-layer cross frame can be relieved, and the upper-layer cross frame can be buckled into a whole through the upper-layer cross frame, so that the cross frame is more stable and safer when falling; meanwhile, the pressed plate can be always kept in a state of being abutted against the upper surface of the cross frame by being buckled into a whole, and the inserted block in the disassembled and assembled cross frame is kept in a state of being retracted into the cross frame, so that the cross frame is convenient to disassemble subsequently.

Optionally, one end of the top of the connecting rod, which is far away from the buckle block, is provided with a heavy block, and the mass of the heavy block is greater than that of the buckle block.

Through adopting above-mentioned technical scheme for the connecting rod can keep outside open state when the crossbearer installation, and the probability that each crossbearer blocked the crossbearer when piling up is detained the piece to reduce.

Optionally, the compression plate and the upper surface of the cross frame are simultaneously abutted with a same locking plate, and the locking plate is detachably connected to the upper surface of the cross frame.

Through adopting above-mentioned technical scheme, when crossbearer and pole setting locking, can additionally install lockplate between receiving board and crossbearer for it moves down to block to receive the board, reduces because of the mistake bumps the probability that receives the board and lead to crossbearer and pole setting mistake unblock in the crossbearer use, improves the security.

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

the pre-assembled crossbars replace the original large crossbars and small crossbars which need to be assembled or disassembled one by one, so that the workload of on-site assembly and disassembly is reduced, and the working efficiency is improved; meanwhile, each layer of cross frame is sleeved on all the upright posts and slides, so that the movement of the cross frame can be ensured to be always kept horizontal, the problems of safety and stability caused by the inclination of the scaffold boards are also reduced, and the problems of large workload and insufficient stability during the construction of the scaffold are solved;

when the cross frames on the uppermost layer are lifted by crane equipment such as a tower crane and the like, all the cross frames can be lifted together by the traction of the chains; when the cross frames on the uppermost layer are lifted to the corresponding mounting heights, all the cross frames can be driven to reach the corresponding mounting heights and are locked through the locking parts, and the step of lifting the cross frames is simplified;

when the crossbearers are disassembled, the crossbearers at the uppermost layer fall first, the locking of the crossbearers at the layer can be released when the crossbearers fall one layer, all the crossbearers which are unlocked are buckled into a whole until the crossbearers fall onto the supporting plate at the lowermost layer, and the steps of disassembling the crossbearers are simplified.

Drawings

Fig. 1 is an external view of a single floor slab according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of the embodiment of the present application located outside a floor slab.

Fig. 3 is an enlarged view at a in fig. 1.

Fig. 4 is a schematic structural view of a locking part of an embodiment of the present application.

FIG. 5 is a schematic view of the independent structure of the linkage rod and the driving rod according to the embodiment of the present application.

Fig. 6 is a cross-sectional view of a locking portion of an embodiment of the subject application.

Description of the reference numerals: 1. cantilever steel beam; 2. a support plate; 3. erecting a rod; 4. a transverse frame; 5. a mounting member; 6. mounting holes; 7. a long screw; 8. a through hole; 9. a locking groove; 10. a locking portion; 11. a chain; 12. a sliding groove; 13. a linkage rod; 14. a first slot; 15. a second slot; 16. inserting a block; 17. a guide block; 18. a guide groove; 19. a locking spring; 20. a circular arc surface; 21. a drive member; 22. a drive slot; 23. a drive rod; 24. a drive aperture; 25. a drive block; 26. a sliding hole; 27. a guide surface; 28. a bump; 29. a compression spring; 30. a connecting rod; 31. buckling blocks; 32. a circular groove; 33. a weight; 34. buckling grooves; 35. a ball-touch pin; 36. a pressure receiving plate; 37. locking plates.

Detailed Description

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

The embodiment of the application discloses a movable scaffold, which is shown in figure 1 and comprises a plurality of cantilever steel beams 1 fixedly connected to a floor slab in a reinforcing steel bar bundling mode, wherein the cantilever steel beams 1 are parallel to each other, and one ends of the cantilever steel beams 1 on the same side extend out of the floor slab; cantilever girder steel 1 stretches out one end fixed surface of floor and is provided with backup pad 2, and 2 upper surface evenly distributed of backup pad and fixed the inserting pole setting 3 that is equipped with a plurality of vertical settings, slide the cover along vertical direction simultaneously on a plurality of pole settings 3 and be equipped with crossbearer 4 that same level set up to 4 quantity of crossbearer set up to a plurality ofly, a plurality of crossbearers 4 overlap in proper order and all overlap on locating pole setting 3 in vertical direction.

Referring to fig. 1 and 2, 2 fixed a plurality of installed parts 5 that are provided with in backup pad bottom to per two installed parts 5 correspond girder steel 1 of encorbelmenting, per two installed parts 5 homoenergetic are pegged graft and are passed through bolt fixed connection in the upper portion of corresponding girder steel 1 of encorbelmenting, thereby make backup pad 2 and girder steel 1 fixed connection of encorbelmenting.

Referring to fig. 1 to 3, a mounting hole 6 for the vertical rod 3 to pass through is formed in the cross frame 4 in a penetrating manner along the vertical direction, a long screw 7 for connecting the vertical rod 3 is formed in the vertical side wall of the support plate 2 in a penetrating manner through a thread, and a through hole 8 for the long screw 7 to pass through is formed in the side wall of the vertical rod 3 near the bottom end in a penetrating manner; during installation, the bottom end of the vertical rod 3 sequentially penetrates through the installation holes 6 of the cross frames 4 and is inserted into the supporting plate 2, and then the long screws 7 sequentially penetrate through the outer wall of the supporting plate 2, the through holes 8 and are connected into the supporting plate 2 in a threaded mode, so that the vertical rod 3 is fixedly connected with the supporting plate 2.

Referring to fig. 1 to 3, each upright rod 3 is uniformly provided with a plurality of locking grooves 9 along the vertical direction for limiting the mounting position of each layer of cross frame 4, and the orientation of the locking grooves 9 is perpendicular to that of the mounting holes 6; and each layer of cross frame 4 is provided with a plurality of locking parts 10 matched with the locking grooves 9, and the number of the locking parts 10 on each cross frame 4 is the same as that of the upright rods 3 and corresponds to that of the upright rods one by one. Meanwhile, chains 11 used for connecting adjacent crossbearers 4 are arranged at two ends of each crossbearer 4 in the length direction, and the length of each chain 11 is the same as the mounting height difference between every two adjacent crossbearers 4.

Referring to fig. 4 to 6, a sliding groove 12 is formed in the cross frame 4 in a penetrating manner along the horizontal direction, the sliding groove 12 is communicated with the mounting hole 6, the locking portion 10 comprises a linkage rod 13 connected in the sliding groove 12 in a sliding manner along the horizontal direction, a first slot 14 is formed in the linkage rod 13 in a penetrating manner along the vertical direction, a second slot 15 communicated with the first slot 14 is further formed in the cross frame 4, the horizontal width of the upper portion of the second slot 15 is larger than that of the first slot 14, the horizontal width of the middle portion of the second slot 15 is equal to that of the first slot 14, and the lower portion of the second slot 15 is communicated with the mounting hole 6.

Referring to fig. 4 to 6, an insertion block 16 is slidably arranged in the first slot 14, the insertion block 16 is L-shaped, the part of the insertion block 16 extending out of the linkage rod 13 can be synchronously slidably connected to the inner wall of the second slot 15, and the protruding end of the lower part of the insertion block 16 can be inserted into the locking slot 9 of the upright rod 3; the diameter size of the first slot 14 in the horizontal direction is larger than the horizontal diameter size of the insertion block 16, and the difference between the horizontal diameter sizes of the first slot 14 and the insertion block 16 is not smaller than the distance of the insertion block 16 inserted into the locking groove 9; when the insertion block 16 is locked with the locking groove 9, the insertion block 16 abuts against the inner wall of the first slot 14 close to the upright rod 3.

Referring to fig. 4 to 6, a guide block 17 is further fixedly arranged on the side wall of the insertion block 16, the guide block 17 is T-shaped, a corresponding guide groove 18 is formed in the inner wall of the second slot 15, and the guide block 17 can be slidably connected in the guide groove 18 along the horizontal direction; a locking spring 19 which is horizontally arranged is fixedly arranged on the side wall of the upper part of the inserting block 16 far away from the mounting hole 6, and one end of the locking spring 19 far away from the inserting block 16 is fixedly connected to the inner wall of the second slot 15; meanwhile, the upper surface of one end, inserted into the vertical rod 3, of the insertion block 16 is provided with an arc surface 20 for forcing the insertion block 16 to retract into the cross frame 4, and the lower surface, inserted into one end of the vertical rod 3, of the insertion block 16 abuts against the inner wall of the locking groove 9, so that the cross frame 4 can only move upwards and cannot move downwards after being inserted into the locking groove 9.

Referring to fig. 4 to 6, a driving part 21 for driving the linkage rod 13 to slide and move away from the insertion block 16 is further arranged in the cross frame 4, a driving groove 22 is formed in the cross frame 4 in a penetrating manner along the vertical direction, the driving groove 22 is communicated with the sliding groove 12, the driving part 21 is arranged on a driving rod 23 arranged in the driving groove 22 in a sliding manner along the vertical direction, and the height of the driving rod 23 is greater than that of the cross frame 4; the driving rod 23 is provided with a driving hole 24 for the linkage rod 13 to be inserted and slide along the horizontal direction, the height of the driving hole 24 is twice of the height of the linkage rod 13, a driving block 25 with the width smaller than that of the linkage rod 13 is fixedly arranged on the inner wall of the top of the driving hole 24, and the height of the driving block 25 is equal to that of the linkage rod 13.

Referring to fig. 4 to 6, a sliding hole 26 is formed through the linkage rod 13 along the vertical direction, and a guide surface 27 for forcing the linkage rod 13 to slide away from the insertion block 16 is formed on the upper portion of the inner wall of the sliding hole 26 away from the insertion block 16. When the driving block 25 moves downwards along the vertical direction, the driving block 25 can abut against the guide surface 27, and the linkage rod 13 slides away from the vertical rod 3 under the guide action of the guide surface 27, so that the inserting block 16 is driven to synchronously slide away from the locking groove 9, and the locking state of the transverse frame 4 and the vertical rod 3 is released.

Referring to fig. 4 to 6, two opposite side walls of the driving rod 23 are both fixedly provided with a protrusion 28, a compression spring 29 for offsetting the self weight of the driving rod 23 is further fixedly arranged on the lower surface of the protrusion 28, the expansion direction of the compression spring 29 is vertical, and one end of the compression spring 29, which is far away from the protrusion 28, is fixed on the cross frame 4.

Referring to fig. 3 and 6, the upper part of the vertical side wall of the cross frame 4 is hinged with a connecting rod 30, and the hinge axis of the connecting rod 30 is arranged to be horizontal; a buckling block 31 for connecting the upper layer of the cross frame 4 is fixedly arranged on the side wall of the top end of the connecting rod 30 facing the cross frame 4, a circular groove 32 is formed in the lower surface of the buckling block 31, and a weight 33 with the weight larger than that of the buckling block 31 is fixedly arranged on the side wall of the top end of the connecting rod 30 facing away from the cross frame 4; meanwhile, the lower part of the vertical side wall of the transverse frame 4 is provided with a buckling groove 34 for the buckling block 31 of the next layer of transverse frame 4 to be inserted, and the inner wall of the lower part of the buckling groove 34 is fixedly provided with a ball-touching pin 35 for being inserted in the circular groove 32. When the linkage rod 13 slides and moves away from the insertion block 16, one end of the linkage rod 13, which is away from the insertion block 16, can penetrate through the cross frame 4, and one end of the linkage rod 13, which penetrates through the cross frame 4, can abut against the bottom of the connecting rod 30, so that the connecting rod 30 is pushed to rotate, and the buckling block 31 is buckled in the buckling groove 34 of the upper layer.

Referring to fig. 3 and 6, the top end of the driving rod 23 is fixedly provided with a horizontally arranged pressed plate 36, the pressed plate 36 and the upper surface of the cross frame 4 are simultaneously abutted by a same locking plate 37, the locking plate 37 is provided with a plurality of blocks, the locking plates 37 can be spliced into a ring, and each locking plate 37 is detachably connected to the upper surface of the cross frame 4 through a screw, so that the probability of mistakenly unlocking the cross frame 4 and the vertical rod 3 due to mistaken collision in the use process of the cross frame 4 is reduced.

The implementation principle of this application embodiment movable scaffold does: when the overhanging type scaffold is installed, firstly, the overhanging steel beam 1 is installed on a floor slab, and the support plate 2 is fixedly connected to the overhanging steel beam 1 through the installation part 5; after a plurality of crossbars 4 are stacked on the support plate 2, the upright rods 3 are inserted, and the upright rods 3 are fixed on the support plate 2 through long screws 7; then, lifting the cross frames 4 at the uppermost layer by using crane equipment such as a tower crane and the like, and enabling the cross frames 4 at all layers to be positioned at corresponding mounting positions by mutually dragging the chains 11 between the cross frames 4 at all layers, wherein the inserting blocks 16 inside the cross frames 4 at all layers can be inserted into the corresponding locking grooves 9 under the pushing of the locking springs 19; finally, the locking plates 37 are sequentially installed, so that the overall safety is improved;

when the scaffold is used and needs to be disassembled, the locking plates 37 are firstly disassembled in sequence; simultaneously pressing the pressed plate 36 of the uppermost cross frame 4 to make the driving rod 23 move downwards to drive the linkage rod 13 to slide away from the vertical rod 3 and drive the inserting block 16 to leave the locking groove 9, thereby releasing the locking state of the uppermost cross frame 4; when the cross frame 4 at the uppermost layer falls onto the cross frame 4 at the next layer due to self weight, the compression plate 36 on the cross frame 4 at the next layer is pressed at the same time to release the locking state of the cross frame 4 at the next layer, at the moment, the linkage rod 13 can push the connecting rod 30 to rotate after sliding, the buckling block 31 of the cross frame 4 at the next layer is buckled in the buckling groove 34 of the cross frame 4 at the upper layer, and the cross frames 4 at the two layers are buckled into a whole and then fall together; each layer of transverse frames 4 sequentially fall, the locking of the transverse frames 4 can be released when each layer falls, and all the transverse frames 4 which are unlocked are buckled into a whole until the transverse frames fall onto the supporting plate 2 at the lowest layer; finally, the upright rods 3 are sequentially detached, and then the connecting rods 30 are manually shifted to enable the buckling blocks 31 to be disconnected from the upper-layer crossbearers 4 so as to detach the crossbearers 4, and the detachment of the scaffold is completed.

The above is a preferred embodiment of the present application, and the scope of protection of the present application is not limited by the above, 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 a movable scaffold, includes girder steel (1) of encorbelmenting of fixed mounting in building wall, its characterized in that: the cantilever steel beam (1) is fixedly provided with the same supporting plate (2), a plurality of vertical rods (3) are inserted into the supporting plate (2), a plurality of horizontal frames (4) which are horizontally arranged are sleeved on the vertical rods (3) in a sliding mode along the vertical direction, the horizontal frames (4) are arranged in a plurality, and the horizontal frames (4) are sequentially overlapped and are all sleeved on the vertical rods (3); and each transverse frame (4) is also provided with a locking part (10) which enables each layer of transverse frame (4) to be locked at different installation heights on the vertical rod (3).

2. A portable scaffolding according to claim 1, wherein: the locking part (10) comprises an insertion block (16) which is arranged in the cross frame (4) in a sliding manner, a plurality of locking grooves (9) used for limiting the installation position of each layer of cross frame (4) are uniformly formed in the upright rod (3), the insertion block (16) can be inserted into the locking grooves (9), and meanwhile, a locking spring (19) used for driving the insertion block (16) to be inserted into the locking grooves (9) is further arranged on the insertion block (16); and the upper surface of the end, inserted into the locking groove (9), of the insertion block (16) is provided with an arc surface (20) used for forcing the insertion block (16) to retract into the cross frame (4), and the lower surface of the end, inserted into the locking groove (9), of the insertion block (16) abuts against the inner wall of the locking groove (9).

3. A portable scaffolding according to claim 2, wherein: the same chain (11) is connected between every two adjacent transverse frames (4) at the same time, and the length of the chain (11) is equal to the mounting height difference between every two adjacent transverse frames (4).

4. A portable scaffolding according to claim 2, wherein: a linkage rod (13) is horizontally and smoothly arranged in the transverse frame (4), a first slot (14) for inserting an insertion block (16) is formed in the linkage rod (13) along the vertical direction, the horizontal diameter of the first slot (14) is larger than that of the insertion block (16), and the difference between the horizontal diameters of the first slot (14) and the insertion block (16) is not smaller than the distance of the insertion block (16) inserted into the locking groove (9); meanwhile, a driving piece (21) used for driving the linkage rod (13) to slide away from the locking groove (9) is further arranged in the transverse frame (4), and the inserting block (16) abuts against the inner wall, close to the vertical rod (3), of the first slot (14) when the linkage rod (13) slides.

5. A mobile scaffolding according to claim 4, in which: driving piece (21) set up to slide along vertical direction and set up actuating lever (23) in crossbearer (4), fixedly on actuating lever (23) be provided with be used for driving linkage bar (13) horizontal drive block (25) that slide, simultaneously hole (26) of sliding have been seted up along vertical direction in linkage bar (13), and the hole (26) of sliding are kept away from the upper portion of inserted block (16) inner wall and are offered and are used for forcing linkage bar (13) to slide and keep away from spigot block (16) spigot surface (27), drive block (25) can butt in spigot surface (27).

6. A portable scaffold according to claim 5 in which: the driving rod (23) is fixedly provided with a convex block (28) on the side wall, the lower surface of the convex block (28) is fixedly provided with a compression spring (29) used for bearing the weight of the driving rod (23), and one end, far away from the convex block (28), of the compression spring (29) is fixed on the cross frame (4).

7. A mobile scaffolding according to claim 6, in which: the bottom of drive lever (23) is parallel and level with crossbearer (4) bottom when crossbearer (4) and pole setting (3) lock, and crossbearer (4) and fixed being provided with receive flitch (36) are worn out on the top of drive lever (23), simultaneously receive flitch (36) can with the lower surface butt of upper crossbearer (4).

8. A portable scaffold according to claim 7 in which: a connecting rod (30) is hinged to the vertical side wall of the cross frame (4), and one end of the linkage rod (13) can slide out of the cross frame (4) and abut against the bottom end of the connecting rod (30); meanwhile, a buckling block (31) is arranged on the side wall of the top of the connecting rod (30) facing the direction of the cross frame (4), and the buckling block (31) can be buckled on the upper-layer cross frame (4) after the connecting rod (30) rotates.

9. A portable scaffolding according to claim 8, wherein: one end of the top of the connecting rod (30), which is far away from the buckling block (31), is provided with a heavy block (33), and the mass of the heavy block (33) is greater than that of the buckling block (31).

10. A portable scaffold according to claim 7 in which: compression plate (36) with it has same lockplate (37) to have supported simultaneously between crossbearer (4) upper surface, lockplate (37) can be dismantled and connect in crossbearer (4) upper surface.