CN113404272B

CN113404272B - Improved generation over-and-under type scaffold frame

Info

Publication number: CN113404272B
Application number: CN202110881553.2A
Authority: CN
Inventors: 姬国华
Original assignee: Wanhong Shuangxi Group Hebei Co ltd
Current assignee: Wanhong Shuangxi Group Hebei Co ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2022-10-04
Anticipated expiration: 2041-08-02
Also published as: CN113404272A

Abstract

The invention relates to an improved lifting scaffold, which comprises a square-shaped frame and a folding device, wherein the square-shaped frame is arranged in bilateral symmetry; the improved lifting scaffold can move relatively or oppositely through the matching between the clip-shaped frames and the lever, so that the distance between the two clip-shaped frames can be adjusted, the two clip-shaped flat plates can be folded through the matching between the circular shaft, the clip-shaped flat plates, the pore plates and the second bolt, the width of the clip-shaped flat plates can be conveniently adjusted in a limited construction space, the floor area of the improved lifting scaffold can be reduced when the improved lifting scaffold is idle, various friction forces can be added to the ground through the left and right asymmetrically arranged protruding blocks and the circular rollers, the positions of the universal wheels are locked and fixed, the operation is simple and convenient, the locking force is strong, the improved lifting scaffold is higher in stability and is not easy to move under collision, and the safety of constructors and the construction positions are ensured.

Description

Improved generation over-and-under type scaffold frame

Technical Field

The invention relates to construction equipment in the field of buildings, in particular to an improved lifting scaffold.

Background

The scaffold is a temporary building tool which is erected for workers to operate and solve vertical and horizontal transportation on a construction site, and is mainly used for outer walls, interior decoration or places with higher floor height and incapable of being directly constructed. The scaffold can be divided into the following steps according to the scaffold erection method: floor type scaffold, overhanging type scaffold, hanging type scaffold and lifting type scaffold, lifting type scaffold is the scaffold fully taken along the outer surface of the structure, and can be gradually lifted along with the structure construction through mutual supporting and mutual lifting between scaffold members or between scaffold and wall body.

With the development of technology, the lifting scaffold is also continuously improved, but most of the improved lifting scaffolds still have the following problems: 1. most of improved lifting scaffolds need to be transported to a construction site for assembly and combination, and need to be manually and repeatedly assembled and disassembled, so that the preparation time before construction is long, and time and labor are wasted; 2. most improved generation over-and-under type scaffold can set up universal wheel and button mechanism in the bottom, and the scaffold of being convenient for can be easily moved and fixed, but button mechanism only need upwards or break down with the fingers and thumb downwards and can lock and the unblock the universal wheel, takes place to remove easily under the collision for the scaffold position is unstable, arouses personnel's potential safety hazard and construction position easily, and factor of safety is low.

Therefore, the invention provides an improved lifting scaffold.

Disclosure of Invention

In order to achieve the purpose, the invention provides an improved lifting scaffold, which comprises a square-shaped frame and two levers, wherein the square-shaped frame is arranged in a bilateral symmetry mode, the two levers are hinged to the front ends of the two square-shaped frames in a crossed mode, the two levers are connected in a hinged mode, the two levers are symmetrically arranged in two groups in the front and at the back, the left end of the square-shaped frame is in a square-shaped structure, the opposite sides of the vertical section of the square-shaped frame are provided with lifting grooves, the side wall of the vertical section of the square-shaped frame is provided with a plurality of threaded holes, the threaded holes are arranged at equal intervals along the height direction of the square-shaped frame, the front end and the back end of the top of the horizontal section above the square-shaped frame are symmetrically provided with round holes, and the front end and the back end of the bottom of the square-shaped frame are symmetrically provided with universal wheels;

the back sides of the horizontal sections below the two square frames are provided with two positioning mechanisms, the front and back of each positioning mechanism are symmetrically provided with two positioning mechanisms, each positioning mechanism comprises a side extension plate arranged on the side wall of the square frame, the front and back ends of the bottom of each side extension plate are symmetrically provided with L-shaped guide rods, a lifting plate is in sliding fit between the vertical sections of the two L-shaped guide rods, the top of each side extension plate is in threaded connection with an adjusting screw rod, the bottom end of each adjusting screw rod penetrates through the bottom end of each side extension plate and is connected with the top of the lifting plate through a bearing, one end of the bottom of each lifting plate, which is far away from the universal wheel, is fixedly connected with a round rod, and the bottom end of each round rod is fixedly connected with a pressing plate;

two be provided with folding device between the type frame of returning, folding device includes the elevator of sliding fit in the inside of lift groove, the inside spiro union of two adjacent screw holes has a screw rod, a screw rod is located the upper and lower both ends of elevator, the equal fixedly connected with fixed plate of two elevator opposite sides of front and back symmetry, be provided with the round axle between two fixed plates of front and back symmetry, be connected through the telescopic link between two fixed plates of bilateral symmetry, the outer wall movable sleeve of round axle is equipped with the type flat board of returning, two about the dull and stereotyped both ends of type of returning just are located two dull and stereotyped symmetry of meeting of returning and are provided with the orifice plate, and the orifice plate front and back symmetry sets up two, the mounting hole has been seted up to the position that the dull and stereotyped upper and lower both ends of returning correspond the orifice plate upper hole, wear to be equipped with No. two bolts jointly in the orifice plate hole of upper and lower symmetry, no. two bolts's bottom is through nut and the dull and stereotyped fixed connection of returning.

Preferably, the bottom of clamp plate is provided with a plurality of protruding pieces, and the protruding piece on left side all is along the length direction evenly distributed of clamp plate, and the protruding piece on right side all is along the width direction evenly distributed of clamp plate.

Preferably, the bottom of the lifting plate is provided with a mounting frame near one end of the universal wheel, the left lifting plate is symmetrically provided with two mounting frames, the right lifting plate is symmetrically provided with two mounting frames, and a round roller is rotatably connected between the two mounting frames.

Preferably, a rack is arranged at the center of the top of the clip-shaped frame.

Preferably, the front end welding at type frame top returns has L type frame, and the front end of the vertical section of L type frame is provided with the multiunit pole of climbing, climbs the direction of height evenly distributed of pole along the vertical section of L type frame.

Preferably, the side wall of the fixed plate is provided with a supporting mechanism, the supporting mechanism comprises two L-shaped support plates which are rotatably connected to one end, far away from the pore plate, of the fixed plate, the two L-shaped support plates are arranged symmetrically up and down, the width of each L-shaped support plate is equal to that of the fixed plate, the opposite sides of the two horizontal sections of each L-shaped support plate are respectively contacted with the upper end and the lower end of the corresponding bent flat plate, a first T-shaped groove is formed in the position, close to one end of each L-shaped support plate and below the corresponding L-shaped support plate, of the fixed plate, and an I-shaped sliding plate is arranged inside each T-shaped groove in a sliding fit mode.

Preferably, two the looks dorsal part of returning the type frame all is provided with elevating system, elevating system is including setting up returning the vertical section bottom of type frame and being close to the overhanging plate of climbing pole one side, rotate between two overhanging plates and be connected with the rolling axle, the fixed cover of outer wall of rolling axle is equipped with the wind-up roll, both ends symmetry rolling around the wind-up roll outer wall has wire rope, two wire rope's end passes two round holes respectively and is connected with the top of two fixed plates respectively, the rear end that the rear end of wind-up axle runs through overhanging plate is fixed the cover and is equipped with the plectane, the outer wall of plectane prolongs its circumference evenly distributed and has the multiunit bull stick.

Preferably, a second T-shaped groove is formed in the center of the rear end of the rear side outward extending plate, a T-shaped sliding block is in sliding butt joint with the inside of the second T-shaped groove, and a Contraband type clamping plate is fixedly connected to the rear end of the T-shaped sliding block.

Advantageous effects

1. According to the invention, the two clip-shaped frames can move relatively or oppositely through the matching between the clip-shaped frames and the lever, so that the distance between the two clip-shaped frames can be adjusted, the two clip-shaped flat plates can be folded through the matching between the circular shaft, the clip-shaped flat plates, the pore plates and the second bolt, the width of the clip-shaped flat plates can be conveniently adjusted in a limited construction space, convenience is provided for the transportation of the improved lifting scaffold, and the occupied area of the improved lifting scaffold when the improved lifting scaffold is idle can be reduced;

2. according to the improved lifting scaffold, multiple friction forces can be added to the ground through the left and right asymmetrically arranged convex blocks and the round rollers, so that the positions of the universal wheels are locked and fixed, the operation is simple and convenient, the locking force is strong, the stability of the improved lifting scaffold is higher, the improved lifting scaffold is not easy to move under collision, and the safety of constructors and the construction positions are ensured;

3. according to the invention, the steel wire rope is wound or unwound by the winding roller, so that the return type flat plate can be lifted, the construction condition of manual movement is improved, and more construction operation ranges are provided.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a perspective view of the present invention;

FIG. 2 is an enlarged schematic view of area A of FIG. 1 in accordance with the present invention;

FIG. 3 is an enlarged schematic view of the area B of FIG. 1 in accordance with the present invention;

FIG. 4 is a front view of the present invention;

FIG. 5 is a perspective view of the paperclip and the support mechanism of the present invention;

FIG. 6 is a front view of the plate and well plate of the present invention;

FIG. 7 is a cross-sectional view of the clip plate and retaining plate of the present invention;

FIG. 8 is a top view of the present invention;

FIG. 9 is a perspective view of the frame, fixing plate and elevating mechanism of the present invention;

FIG. 10 is an enlarged schematic view of region C of FIG. 9 in accordance with the present invention;

FIG. 11 is a perspective view of a T-shaped slider and Contraband card of the present invention.

In the figure: 10. a clip frame; 101. a lifting groove; 102. a threaded hole; 103. a circular hole; 11. a lever; 12. a universal wheel; 13. a positioning mechanism; 131. a side extension plate; 132. an L-shaped guide rod; 133. a lifting plate; 134. adjusting the screw rod; 135. a round bar; 136. pressing a plate; 137. a mounting frame; 138. a round roller; 14. a storage plate; 15. an L-shaped frame; 16. climbing a pole; 20. a folding device; 21. a lifting block; 211. a first bolt; 22. a fixing plate; 221. a circular shaft; 222. a telescopic rod; 23. a clip-shaped flat plate; 24. an orifice plate; 25. a second bolt; 26. a support mechanism; 261. an L-shaped support plate; 262. a first T-shaped groove; 263. an i-shaped slide plate; 27. a lifting mechanism; 271. an overhang plate; 272. a wind-up roll; 273. a wire rope; 274. a circular plate; 275. a rotating rod; 276. a second T-shaped groove; 277. a T-shaped slider; 278. contraband card.

Detailed Description

Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1, 8 and 9, an improved lifting scaffold comprises a clip frame 10 and two levers 11 which are symmetrically arranged left and right and are hinged at the front ends of the two clip frames 10 in a crossed manner, the two levers 11 are connected with each other in a hinged manner, the two levers 11 are symmetrically arranged in two groups in front and back, the left end of the clip frame 10 is in a clip structure, the opposite sides of the vertical section of the clip frame 10 are provided with lifting grooves 101, the side wall of the vertical section of the clip frame 10 is provided with a plurality of threaded holes 102, the threaded holes 102 are arranged at equal intervals along the height direction of the clip frame 10, the lifting grooves 101 are communicated with the threaded holes 102, the front end and the back end of the top of the horizontal section above the clip frame 10 are symmetrically provided with round holes 103, and the front end and the back end of the bottom of the clip frame 10 are symmetrically provided with universal wheels 12;

referring to fig. 1, 2 and 3, the back sides of the horizontal sections below the two circular frames 10 are provided with two positioning mechanisms 13, the positioning mechanisms 13 are symmetrically provided with two front and back ends, the positioning mechanisms 13 include side extension plates 131 arranged on the side walls of the circular frames 10, the front and back ends of the bottoms of the side extension plates 131 are symmetrically provided with L-shaped guide rods 132, a lifting plate 133 is slidably fitted between the vertical sections of the two L-shaped guide rods 132 and above the horizontal section of the L-shaped guide rods 132, the top of the side extension plates 131 is in threaded connection with an adjusting screw 134, the bottom end of the adjusting screw 134 penetrates through the bottom end of the side extension plate 131 and is connected with the top of the lifting plate 133 through a bearing, one end of the bottom of the lifting plate 133, which is far away from the universal wheel 12, is fixedly connected with a circular rod 135, the bottom end of the circular rod 135 is fixedly connected with a pressing plate 136, the bottom end of the pressing plate 136 is provided with a plurality of protruding blocks, the left protruding blocks are uniformly distributed along the length direction of the pressing plate 136, the right protruding blocks are uniformly distributed along the width direction of the pressing plate 136, one end of the bottom of the lifting plate 133, one end of the lifting plate 133, the bottom of the lifting plate is provided with two symmetrical front and back ends, the left side is provided with two protruding blocks 137, the left side, the two symmetrical lifting roller 137, the two left lifting roller 137, the two symmetrical lifting roller are provided with the bottom ends of the left lifting roller 137, the left lifting roller 133, the left lifting roller and right roller 138, and right roller is connected with the lifting roller 137, and the lifting roller 138;

referring to fig. 1, 4, 8 and 9, a shelf 14 is disposed at the center of the top of the clip frame 10 and between two circular holes 103, so as to facilitate placement of construction articles, an L-shaped frame 15 is welded to the front end of the top of the clip frame 10, a space exists between the vertical section of the L-shaped frame 15 and the clip frame 10, a plurality of groups of climbing rods 16 are disposed at the front end of the vertical section of the L-shaped frame 15, and the climbing rods 16 are uniformly distributed along the height direction of the vertical section of the L-shaped frame 15;

referring to fig. 4, 5, 6 and 8, a folding device 20 is arranged between two rectangular frames 10, the folding device 20 includes a lifting block 21 which is slidably fitted inside a lifting groove 101, a first screw 211 is screwed inside two adjacent threaded holes 102, the first screw 211 is located at the upper and lower ends of the lifting block 21, opposite sides of the two lifting blocks 21 which are symmetrical front and back are fixedly connected with fixing plates 22, a circular shaft 221 is arranged between the two fixing plates 22 which are symmetrical front and back, the two fixing plates 22 which are symmetrical left and right are connected through a telescopic rod 222, a rectangular flat plate 23 is movably sleeved on the outer wall of the circular shaft 221 and between the two fixing plates 22 which are symmetrical front and back, two rectangular plates 24 are symmetrically arranged at the connecting positions of the two rectangular flat plates 23 at the upper and lower ends of the two rectangular flat plates 23, two rectangular plates 24 are symmetrically arranged front and back, mounting holes are arranged at positions, which correspond to holes on the rectangular plates 24, a second bolt 25 is commonly penetrated in the holes of the rectangular flat plates 24, and the bottom end of the second bolt 25 is fixedly connected with the rectangular flat plates 23 through a nut;

referring to fig. 4, 5, 7 and 8, a supporting mechanism 26 is disposed on a side wall of the fixing plate 22, the supporting mechanism 26 includes two L-shaped support plates 261 rotatably connected to an end of the fixing plate 22 away from the orifice plate 24, the two L-shaped support plates 261 are symmetrically disposed up and down, a width of the L-shaped support plate 261 is equal to a width of the fixing plate 22, opposite sides of two horizontal sections of the L-shaped support plate 261 are respectively contacted with upper and lower ends of the rectangular flat plate 23, one end of a vertical section of the L-shaped support plate 261 is in an arc structure, a first T-shaped groove 262 is disposed at a position, below the L-shaped support plate 261, of the fixing plate 22, close to one end of the L-shaped support plate 261, an i-shaped sliding plate 263 is slidably fitted inside the first T-shaped groove 262, and the i-shaped sliding plate 263 plays a role in supporting and limiting for a bottom of the L-shaped support plate 261, so as to prevent the L-shaped support plate 261 from rotating downwards;

referring to fig. 8, 9, 10 and 11, the lifting mechanisms 27 are disposed on opposite back sides of the two clip frames 10, each lifting mechanism 27 includes an outward extending plate 271 disposed at the bottom end of a vertical section of the clip frame 10 and close to one side of the climbing rod 16, a winding shaft is rotatably connected between the two outward extending plates 271, a winding roller 272 is fixedly sleeved on an outer wall of the winding shaft, steel wire ropes 273 are symmetrically wound on front and rear ends of an outer wall of the winding roller 272, ends of the two steel wire ropes 273 respectively pass through two circular holes 103 and are connected with tops of the two fixing plates 22, a circular plate 274 is fixedly sleeved on a rear end of the winding shaft and penetrates through a rear end of the outward extending plate 271, a plurality of sets of rotating rods 275 are uniformly distributed on an outer wall of the circular plate 274 along the circumferential direction, a second T-shaped groove 276 is formed in the center of the rear end of the outward extending plate 271, a T-shaped slider 277 is slidably abutted inside the second T-shaped groove 276, a rear end of the T-shaped slider 277 is fixedly connected with a 3238 zxft-shaped clamping plate 278, and 3262 zxft-shaped 3262-shaped clamping plate 3262-shaped 32278 is fixedly connected with two horizontal sections, and has the same diameter as the diameter of the rotating rods 275.

The working principle is as follows: the method comprises the following steps that a clip-shaped frame 10 is pushed to a position to be constructed, two clip-shaped frames 10 are pulled to move oppositely or oppositely, at the moment, levers 11 are driven by the clip-shaped frame 10 to rotate, when the two levers 11 are close to each other and gradually positioned in a vertical state, the two clip-shaped frames 10 move oppositely, and when the two levers 11 are far away from each other and gradually positioned in a horizontal state, the two clip-shaped frames 10 move oppositely, so that the distance between the two clip-shaped frames 10 can be adjusted;

after the width between the two square-shaped frames 10 is adjusted, the adjusting screw 134 is rotated to rotate and move downwards, the lifting plate 133 synchronously moves downwards under the screw driving of the adjusting screw 134 and the guiding action of the L-shaped guide rod 132, the lifting plate 133 drives the round rod 135, the pressing plate 136 and the round roller 138 to synchronously move downwards to the ground, various friction forces can be added to the ground through the left and right asymmetrically arranged convex blocks and the round roller 138, and then the position of the universal wheel 12 is locked and fixed, the operation is simple and convenient, the locking force is strong, the improved lifting scaffold is higher in stability and is not easy to move easily under collision, and the safety of constructors and the construction position are ensured;

when the height of the returning flat plate 23 needs to be adjusted, the first screw 211 is screwed out from the threaded hole 102, the I-shaped sliding plate 263 moves towards the inside of the first T-shaped groove 262, the I-shaped sliding plate 263 does not contact with the L-shaped support plate 261 at the moment, the L-shaped support plate 261 can rotate to a vertical state, the L-shaped support plate 261 does not clamp and support the upper end and the lower end of the returning flat plate 23 at the moment, the Contraband type clamping plate 278 is pushed towards the returning frame 10, the Contraband type clamping plate 278 drives the T-shaped sliding block 277 to move along the second T-shaped groove 276, the Contraband type clamping plate 278 gradually gets away from the rotating rod 275, the circular plate 274 is rotated at the moment, the circular plate 274 drives the coaxially connected winding roller 272 to rotate together, and the winding roller 272 winds or unwinds the steel wire rope 273, the fixed plate 22 drives the lifting block 21 to move up and down along the lifting groove 101 under the driving of the steel wire rope 273, the fixed plate 22 drives the circular shaft 221 and the reverse flat plate 23 to move together, so that the reverse flat plate 23 is lifted, the construction condition of manual movement is improved, more construction operation ranges are provided, after the height of the reverse flat plate 23 is adjusted, the first screw 211 is screwed into the corresponding threaded hole 102, the Contraband type clamping plate 278 is pushed towards the direction of the rotating rod 275, at the moment, the 3536 type clamping plate 278 drives the T-shaped sliding block 277 to move along the second T-shaped groove 276, one rotating rod 275 is inserted between two horizontal sections of the Contraband type clamping plate 278, and at the moment, the position of the circular plate 274 is locked, so that the circular plate 274 cannot rotate;

when the improved lifting scaffold is not used, the I-shaped sliding plate 263 moves towards the inside of the first T-shaped groove 262, the I-shaped sliding plate 263 is not in contact with the L-shaped supporting plate 261, the L-shaped supporting plate 261 can be rotated to be in a vertical state, the L-shaped supporting plate 261 does not clamp and support the upper end and the lower end of the loop-shaped flat plate 23, the second bolt 25 is detached, the two loop-shaped flat plates 23 are in a separated state, the loop-shaped flat plate 23 rotates to be in a vertical section state around the circular shaft 221 and is erected at the bottom end of the inner wall of the loop-shaped frame 10, the two loop-shaped frames 10 move oppositely, and the telescopic rod 222 gradually contracts, so that the two loop-shaped flat plates 23 can be folded, and the width of the two loop-shaped flat plates 23 can be conveniently adjusted by the two loop-shaped frames 10.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an improved generation over-and-under type scaffold, includes two levers (11) that return type frame (10) and cross-over hinge at two return type frame (10) front ends that bilateral symmetry set up, its characterized in that: the two levers (11) are connected in a hinged mode, two groups of levers (11) are symmetrically arranged in the front and back direction, the left end of the clip-shaped frame (10) is of a clip-shaped structure, the opposite sides of the vertical section of the clip-shaped frame (10) are provided with lifting grooves (101), the side wall of the vertical section of the clip-shaped frame (10) is provided with a plurality of threaded holes (102), the threaded holes (102) are distributed at equal intervals along the height direction of the clip-shaped frame (10), the front end and the back end of the top of the horizontal section above the clip-shaped frame (10) are symmetrically provided with round holes (103), and the front end and the back end of the bottom of the clip-shaped frame (10) are symmetrically provided with universal wheels (12);

the back sides of the horizontal sections below the two square-shaped frames (10) are provided with two positioning mechanisms (13), the front and back of each positioning mechanism (13) are symmetrically provided with two positioning mechanisms, each positioning mechanism (13) comprises a side extension plate (131) arranged on the side wall of the square-shaped frame (10), the front end and the back end of the bottom of each side extension plate (131) are symmetrically provided with L-shaped guide rods (132), a lifting plate (133) is in sliding fit between the vertical sections of the two L-shaped guide rods (132), the top of each side extension plate (131) is in threaded connection with an adjusting screw (134), the bottom end of each adjusting screw (134) penetrates through the bottom end of each side extension plate (131) and is connected with the top of each lifting plate (133) through a bearing, one end, far away from the universal wheel (12), of the bottom of each lifting plate (133) is fixedly connected with a round rod (135), and the bottom end of each round rod (135) is fixedly connected with a pressing plate (136);

two be provided with folding device (20) between type frame (10) back, folding device (20) include sliding fit at inside elevator (21) of lift groove (101), the inside spiro union of two adjacent screw holes (102) has screw rod (211) No. one, screw rod (211) are located the upper and lower both ends of elevator (21), the equal fixedly connected with fixed plate (22) of two elevator (21) opposite sides of front and back symmetry, be provided with round axle (221) between two fixed plate (22) of front and back symmetry, be connected through telescopic link (222) between two fixed plate (22) of bilateral symmetry, the outer wall movable sleeve of round axle (221) is equipped with back type flat board (23), the upper and lower both ends of two back type flat board (23) just are located two back type flat board (23) and meet the department symmetry and are provided with orifice plate (24), and orifice plate (24) front and back symmetry sets up two, the mounting hole has been seted up to the position that the upper and lower both ends of back type flat board (23) correspond hole on orifice plate (24), the orifice plate (24) downthehole of up and down symmetry wears to be equipped with No. two, no. two number bolt (25) are connected through nut (23) fixed plate (23).

2. An improved lifting scaffold according to claim 1 wherein: the bottom of clamp plate (136) is provided with a plurality of protruding pieces, and the protruding piece on left side all is along the linear evenly distributed of the length direction of clamp plate (136), and the protruding piece on right side all is along the linear evenly distributed of the width direction of clamp plate (136).

3. An improved lifting scaffold according to claim 1 wherein: the universal wheel lifting device is characterized in that an installation frame (137) is arranged at one end, close to the universal wheel (12), of the bottom of the lifting plate (133), two installation frames (137) are symmetrically arranged on the front and back of the lifting plate (133) on the left side, two installation frames (137) are symmetrically arranged on the left and right of the lifting plate (133) on the right side, and a round roller (138) is rotatably connected between the two installation frames (137).

4. An improved lifting scaffold according to claim 1 wherein: the top center of the clip-shaped frame (10) is provided with a shelf (14).

5. An improved lifting scaffold according to claim 1 wherein: the front end welding at the time of returning type frame (10) top has L type frame (15), and the front end of the vertical section of L type frame (15) is provided with multiunit pole-climbing (16), and pole-climbing (16) are along the direction of height evenly distributed of the vertical section of L type frame (15).

6. An improved lifting scaffold according to claim 1 wherein: the side wall of fixed plate (22) is provided with supporting mechanism (26), supporting mechanism (26) are including rotating L type extension board (261) of connecting in fixed plate (22) and keeping away from orifice plate (24) one end, L type extension board (261) longitudinal symmetry is provided with two, the width of L type extension board (261) equals with the width of fixed plate (22), the opposite side of two horizontal segments of L type extension board (261) contacts with the upper and lower both ends of returning type dull and stereotyped (23) respectively, fixed plate (22) are close to the one end of L type extension board (261) and are located the position of L type extension board (261) below and have seted up No. one T type groove (262), the inside sliding fit of No. one T type groove (262) has i-shaped slide (263).

7. An improved lifting scaffold according to claim 1 wherein: two the looks dorsal part of returning type frame (10) all is provided with elevating system (27), elevating system (27) are including setting up overhanging plate (271) in returning type frame (10) vertical section bottom and being close to pole (16) one side of climbing, it is connected with the rolling axle to rotate between two overhanging plate (271), the fixed cover of outer wall of rolling axle is equipped with wind-up roll (272), both ends symmetry rolling has wire rope (273) around wind-up roll (272) outer wall, the end of two wire rope (273) passes two round holes (103) respectively and is connected with the top of two fixed plates (22) respectively, the rear end of rolling axle runs through the rear end of overhanging plate (271) and fixed cover is equipped with plectane (274), the outer wall of plectane (274) extends its circumference evenly distributed has multiunit bull stick (275).

8. An improved lifting scaffold according to claim 7 wherein: the center of the rear end of the extending plate (271) at the rear side is provided with a second T-shaped groove (276), a T-shaped sliding block (277) is in sliding butt joint with the inside of the second T-shaped groove (276), and the rear end of the T-shaped sliding block (277) is fixedly connected with a Contraband type clamping plate (278).