CN212835920U

CN212835920U - Movable electric lifting scaffold

Info

Publication number: CN212835920U
Application number: CN202021544073.4U
Authority: CN
Inventors: 周杰锋; 刘艳梅; 章静; 丰龙俊; 林双双; 任化伦; 常琳琳; 严婷
Original assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Current assignee: Shanghai Zhenghua Heavy Industries Co Ltd
Priority date: 2020-07-30
Filing date: 2020-07-30
Publication date: 2021-03-30
Anticipated expiration: 2030-07-30

Abstract

The utility model discloses a movable electric lifting scaffold, which comprises a lifting scaffold body, a steel frame plate arranged on the lifting scaffold body, and a movable railing arranged on the lifting scaffold body; the two lifting scaffold bodies respectively comprise a T-shaped frame, a lifting device arranged on the T-shaped frame, a plurality of trundles arranged at the bottoms of the T-shaped frame and T-shaped frame supporting legs which are arranged on the side edges of the T-shaped frame and the number of the T-shaped frame supporting legs is consistent with that of the trundles; the T-shaped frame comprises a rectangular T-shaped frame base, four corner positions at the bottom of the T-shaped frame base are respectively provided with a caster mounting flange plate, four corner positions on the side edge of the T-shaped frame base are respectively provided with a supporting leg support, the T-shaped frame base is provided with a lifting device separation seat, the upper surface of the T-shaped frame base is provided with an upright post, and the upright post is provided with a plurality of limiting pin holes; the lifting device comprises a lower driving mechanism and an upper driving mechanism connected with the lower driving mechanism. The utility model discloses satisfy the constructor demand such as altitude mixture control and safety protection when ascending a height the operation.

Description

Movable electric lifting scaffold

Technical Field

The utility model relates to a scaffold frame of operation usefulness of ascending a height, more specifically say, relate to a movable electric lift scaffold frame.

Background

In the process of manufacturing large steel structure projects such as shore bridges, bulk cargos and bridges, various accessories in large quantity are often installed or maintenance and coating operations are performed in a mode of ascending operation. The used ascending equipment is generally a built-up steel pipe scaffold (steel frame plates or wood frame plates are laid on the scaffold to be used as a working platform for constructors). The disadvantages of this mode of operation are: the required auxiliary materials are more, the involved operation links are more, the safety problem is solved, the workload is large, the labor intensity is high, the efficiency is low, the maneuverability is poor, and the like. It is just for the above-mentioned factor that "this" scaffold frame "of" a movable electric lifting scaffold frame has been designed and manufactured, also can be used for the ascending operation of engineering such as house decoration and painting.

SUMMERY OF THE UTILITY MODEL

To the above-mentioned defect that exists among the prior art, the utility model aims at providing a movable electric lift scaffold, satisfy demands such as altitude mixture control and safety protection of constructor when going on the operation of ascending a height.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a movable electric lifting scaffold comprises a lifting scaffold body, a steel frame plate arranged on the lifting scaffold body, and a movable railing arranged on the lifting scaffold body;

the two lifting scaffold bodies respectively comprise a T-shaped frame, a lifting device arranged on the T-shaped frame, a plurality of trundles arranged at the bottoms of the T-shaped frames and T-shaped frame support legs which are arranged on the side edges of the T-shaped frames and the number of the support legs is consistent with that of the trundles;

the two end parts of the steel frame plate are respectively erected on the lifting device;

the T-shaped frame comprises a rectangular T-shaped frame base, four corner positions at the bottom of the T-shaped frame base are respectively provided with a caster mounting flange plate for mounting the caster, four corner positions at the side edge of the T-shaped frame base are respectively provided with a support leg support for mounting the support leg of the T-shaped frame, the T-shaped frame base is provided with a lifting device partition seat for mounting the lifting device, the upper surface of the T-shaped frame base is provided with an upright post, the upright post is provided with a plurality of limiting pin holes, and the upright post is also connected with a ladder;

the lifting device comprises a lower driving mechanism arranged on the lifting device separation seat and an upper driving mechanism connected with the lower driving mechanism, and the end part of the steel frame plate is erected on the upper driving mechanism;

the movable railing is inserted on the upper driving mechanism.

Preferably, the number of the stand columns is two, the two stand columns are symmetrically arranged, a plurality of limiting pin holes are formed in opposite surfaces of the two stand columns, and the limiting pin holes in the two stand columns are arranged in a mirror image mode.

Preferably, the lower driving mechanism comprises a lower supporting seat, a first speed reducer is arranged on the lower surface of the lower supporting seat, a first forward-rotation lead screw and a first backward-rotation lead screw are respectively connected to the side surface of the first speed reducer facing the direction of the upright column, and a first limiting pin matched with the limiting pin hole is respectively connected to the first forward-rotation lead screw and the first backward-rotation lead screw;

the upper surface of the lower supporting seat is provided with an electric push rod;

and first sliding rail baffles are arranged at the two end parts of the lower supporting seat.

Preferably, the upper driving mechanism comprises an upper support seat connected with the electric propulsion rod, a second speed reducer is arranged on the lower surface of the upper support seat, a second forward screw rod and a second backward screw rod are respectively connected to the side surface of the second speed reducer facing the direction of the upright column, and second limiting pins matched with the limiting pin holes are respectively connected to the second forward screw rod and the second backward screw rod;

and second sliding rail baffles are arranged at the two end parts of the upper supporting seat.

The better, the bottom suspension seat includes the bottom suspension seat body, the lower surface of bottom suspension seat body is equipped with and is used for placing the spacer pin guide support of first spacer pin and is used for installing the speed reducer installation panel of first speed reducer, all be equipped with on the both sides limit of bottom suspension seat body and be used for installing the electric push rod installation otic placode of electric push rod.

The preferred, go up the supporting seat and include the supporting seat body, the lower surface of going up the supporting seat body is equipped with and is used for placing the spacer pin guide support of second spacer pin, is used for installing the speed reducer installation panel of second speed reducer and be used for with the connection support that electric propulsion pole links to each other, all be equipped with on the both sides edge of going up the supporting seat body and be used for erectting the frame plate dead lever of steel frame plate, the both ends of frame plate dead lever all are equipped with movable railing jack.

Preferably, the support leg of the T-shaped frame comprises a screw rod arranged on the support leg support, and a pressure foot connected to the bottom of the screw rod through a pressure foot fastening nut.

Preferably, the steel frame plate is provided with a plurality of anti-skid lightening holes.

Preferably, the movable handrail comprises a movable handrail body and a handrail plug which is connected to the lower end of the movable handrail and is matched with the movable handrail plug hole.

In the technical scheme, the movable electric lifting scaffold provided by the utility model has the advantages that the use of the lifting scaffold can completely replace the mode of erecting the scaffold by steel pipes and then laying steel frame plates or wood frame plates layer by layer. Has the following advantages: 1) the labor and the working hours required for installing the lifting scaffold are less than those required for building the steel pipe scaffold, and the labor intensity is relatively low; 2) the disassembly and the moving are convenient; 3) the potential safety hazard created by removal or installation is relatively low; 4) the transportation of the required vehicles and the cost are relatively low; 5) the auxiliary materials needed are relatively less, and the waste of the manufactured materials is also relatively less; 5) the space required to store the material is relatively small.

Drawings

Fig. 1 is a schematic structural view of the movable electric lifting scaffold of the present invention;

fig. 2 is a schematic structural view of a lifting scaffold body in the movable electric lifting scaffold of the present invention;

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

fig. 4 is a schematic structural view of a T-shaped frame in the lifting scaffold body of fig. 2;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

FIG. 6 is an enlarged schematic view of portion C of FIG. 4;

FIG. 7 is an enlarged schematic view of portion D of FIG. 4;

fig. 8 is a schematic view of the structure of the lifting device in the lifting scaffold body of fig. 2;

FIG. 9 is an exploded view of the lower drive mechanism of the lift device of FIG. 8;

FIG. 10 is a schematic view of a lower support base of the lower driving mechanism of FIG. 9;

FIG. 11 is an exploded view of the upper drive mechanism of the lift device of FIG. 8;

FIG. 12 is a schematic view of the upper support seat of the driving mechanism of FIG. 11;

fig. 13 is a schematic structural view of a T-shaped frame leg of the lifting scaffold body of fig. 2;

fig. 14 is a schematic structural view of a steel frame plate in the movable electric lifting scaffold of the present invention;

fig. 15 is a schematic structural view of a movable rail in the movable electric lifting scaffold of the present invention;

FIG. 16 is an enlarged schematic view of section E of FIG. 15;

FIG. 17 is a schematic view of the lower drive mechanism of the lift of FIG. 8 in an operational position at a fulcrum;

FIG. 18 is a schematic view of the lifting device of FIG. 8 with the upper drive mechanism as the fulcrum;

fig. 19 is a schematic view showing a state where an up/down driving mechanism is fixed to a column in the lifting device of fig. 8;

FIG. 20 is a schematic view showing a state where an up/down driving mechanism is not fixed to a column in the elevating device of FIG. 8;

FIG. 21 is a schematic view of the elevator assembly of FIG. 8 bottoming out;

fig. 22 is an enlarged schematic view of portion F of fig. 21;

fig. 23 is a schematic diagram of the field layout of the mobile electric lifting scaffold of the present invention;

fig. 24 is an enlarged schematic view of portion G of fig. 23;

fig. 25 is an enlarged schematic view of portion H of fig. 23;

fig. 26 is a schematic view of the mobile power scaffolding of fig. 23 raised to the highest point.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings and examples.

Please combine fig. 1, the utility model provides a portable electric lift scaffold, including lift scaffold body 1, erect the steel frame plate 2 on lift scaffold body 1, and install movable railing 3 on lift scaffold body 1, the utility model discloses portable electric lift scaffold has the function and satisfies the workman demand such as height adjustment and safety protection when ascending a height the operation.

As shown in fig. 2 to 3, the two lifting scaffold bodies 1 are used for supporting the steel frame plate 2 (a worker stands on the steel frame plate 2 to perform a construction operation, and a required tool material is also placed on the steel frame plate 2). The lifting scaffold body 1 comprises a T-shaped frame 11, a lifting device 12 arranged on the T-shaped frame 11, trundles 13 arranged at four corner positions at the bottom of the T-shaped frame 11, and T-shaped frame support legs 14 which are arranged at the side edges of the T-shaped frame 11 and have the same number with the trundles 13.

The two ends of the steel frame plate 2 are respectively erected on the lifting device 12.

As shown in fig. 4 to 7, the T-shaped frame 11 includes a rectangular T-shaped frame base 1101, caster mounting flange plates 1102 for mounting casters 13 are mounted at four corners of the bottom of the T-shaped frame base 1101, leg supports 1103 for mounting T-shaped frame legs 14 are mounted at four corners of the side of the T-shaped frame base 1101, a lifting device partition 1104 for mounting a lifting device 12 is mounted on the T-shaped frame base 1101, two symmetrically arranged columns 1105 are mounted on the upper surface of the T-shaped frame base 1101, top ends of the two columns 1105 are connected and fixed by a connecting rod, a plurality of limiting pin holes 1106 arranged in a mirror image are formed in opposite side surfaces of the two columns 1105, and a ladder 1107 is connected to any one of the columns 1105.

T-frame mount 1101 is used to mount and carry elevator apparatus 12.

The function of the upright 1105 is to mount the lifting device 12, and also to be a guide rail for the lifting device 12 to reciprocate vertically.

The casters 13 include rigid casters and universal casters, each mounted on the caster mounting flange plate 1102.

The limiting pin hole 1106 is used for limiting and controlling the lifting height of the lifting device 12 in cooperation with the first limiting pin 12107/the second limiting pin 12209 on the lifting device 12.

The ladder 1107 functions to allow the worker to climb up and down to reinforce the column 1105.

The elevator spacing block 1104 functions to support the elevator 12 at the bottom by the elevator spacing block 1104 when the first 12107/second 12209 stopper pin is in a non-operating state (not inserted into the stopper pin hole 1106), so as to prevent the elevator 12 from moving downward without limit and from hitting the first T4 reducer 12103 and the electric push rod 12109 disposed at the bottom of the elevator 12. The height of the steel deck plate 2 laid on the lifting device 12 from the ground is the lowest when the lifting device 12 rests on the lifting device stand 1104.

As shown in fig. 8, the lifting device 12 is used for supporting the steel frame plate 2, the operator, the tool material, etc., and adjusting the height (height from the ground) of the steel frame plate 2 according to the construction operation. The lifting device 12 comprises a lower driving mechanism 121 arranged on the lifting device base 1104 and an upper driving mechanism 122 connected with the lower driving mechanism 121, the end part of the steel frame plate 2 is erected on the upper driving mechanism 122, and the movable handrail 3 is also inserted on the upper driving mechanism 122.

As shown in fig. 9, the lower driving mechanism 121 includes a lower supporting base 12101, a first T4 speed reducer 12103 is mounted on a lower surface of the lower supporting base 12101 through a fastening screw 12102, a first forward rotation lead screw 12104 and a first backward rotation lead screw 12105 are respectively connected to two side surfaces of the first T4 speed reducer 12103 facing the two columns 1105 directions, a first limit pin 12107 adapted to the limit pin hole 1106 is connected to outer ends of the first forward rotation lead screw 12104 and the first backward rotation lead screw 12105 through fastening screws 12106, and a limit pin rotation preventing key 12112 is further provided on the first limit pin 12107.

The upper surface of the lower support base 12101 is provided with an electric push rod 12109 by a fastening screw 12108.

The two ends of the lower support seat 12101 are respectively provided with a first slide rail baffle 12111 via a fastening screw 12110.

The lower driving mechanism 121 is used for jacking and pulling the upper driving mechanism 122 above through the jacking and pulling functions of the electric push rod 12109 (the jacking stroke is set to be 500mm, and also can be set to be 250mm) so as to achieve the purpose of adjusting the height of the steel frame plate 2. During the jacking operation, the lower driving mechanism 121 and the upper driving mechanism 122 act on each other as a fulcrum. When the lifting scaffold body 1 is in initial lifting operation, a lifting fulcrum of the electric pushing rod 12109 is a lower support base 12101 (the electric pushing rod 12109 is mounted on the lower support base 12101), two end portions of a first limiting pin 12107 arranged below the lower support base 12101 are driven by a first T4 speed reducer 12103 (when the first T4 speed reducer 12103 rotates forwards, a first forward lead screw 12104 and a first backward lead screw 12105 extend outwards, and when the first T4 speed reducer 12103 rotates backwards, the first forward lead screw 12104 and the first backward lead screw 12105 retract inwards, because the first limiting pin 12107 is mounted at the end portions of the first forward lead screw 12104 and the first backward lead screw 12105, the first limiting pin 12107 extends or retracts simultaneously while the first forward lead screw 12104 and the first backward lead screw 12105 extend or retract simultaneously) and is inserted into limiting pin holes 1106 of two upright posts 1105 respectively. When the lifter 12 is at the lowest position and the first stopper pin 12107 is not inserted into the stopper pin hole 1106 and functions as a support, the lifter 12 is supported from below by the lifter spacer 1104. The lower support seat 12101 is supported by the cooperation of the first limit pin 12107 and the limit pin hole 1106, so that the lower support seat 12101 does not move downward under the action of its own weight and the counter-weight force generated by the lifting of the electric push rod 12109.

As shown in fig. 10, the lower support 12101 is used for supporting and mounting the components related to the lower driving mechanism 121. The lower support 12101 includes a lower support body 12112, two end portions of a lower surface of the lower support body 12112 are respectively provided with a stopper pin guide support 12113 for placing a first stopper pin 12107, a reducer mounting panel 12114 for mounting a first T4 reducer 12103 is provided between the two stopper pin guide supports 12113, and two side edges of the lower support body 12112 are respectively provided with an electric actuator rod mounting lug 12115 for mounting an electric actuator rod 12109.

As shown in fig. 11, the upper driving mechanism 122 includes an upper supporting base 12203 connected to the top of the electric driving rod 12109 through a combination of a connecting pin and a retainer ring 12201 and a cotter pin 12202, a second T4 speed reducer 12205 is mounted on the lower surface of the upper supporting base 12203 through a fastening screw 12204, a second forward rotation lead screw 12206 and a second reverse rotation lead screw 12207 are respectively connected to two side surfaces of the second T4 speed reducer 12205 facing the direction of the two columns 1105, a second limiting pin 12209 adapted to the limiting pin hole 1106 is connected to the outer end of each of the second forward rotation lead screw 12206 and the second reverse rotation lead screw 12207 through a fastening screw 12208, and a limiting pin rotation preventing key 12210 is further provided on each of the second limiting pin 12209.

The two ends of the upper supporting seat 12203 are respectively provided with a second slide rail baffle 12212 through a fastening screw 12211.

The upper drive mechanism 122 serves to carry and lay the steel deck plate 2 and serves as a support point for the lower drive mechanism 121 when the lifting device 12 is moving up or down.

As shown in fig. 12, the upper supporting base 12203 includes an upper supporting base body 12213, two end portions of the lower surface of the upper supporting base body 12213 are respectively provided with a limiting pin guiding support 12214 for placing a second limiting pin 12209, a speed reducer mounting panel 12215 for mounting a second T4 speed reducer 12205 and a connecting support 12216 for connecting with the top of the electric propulsion rod 12109 are disposed between the two limiting pin guiding supports 12214, two side edges of the upper supporting base body 12213 are respectively provided with a frame plate fixing rod 12217 for erecting the steel frame plate 2, and two end portions of the frame plate fixing rod 12217 are respectively provided with a movable railing insertion hole 12218.

The effect of frame plate dead lever 12217 is the contact surface of increase steel frame plate 2 and upper support 12203, can use rope or iron wire to fix steel frame plate 2 on frame plate dead lever 12217 simultaneously to avoid steel frame plate 2 to drop and guarantee construction operation safety.

The stopper pin guide support 12113/12214 functions to mount the first stopper pin 12107/second stopper pin 12209 and provide a guide function for the first stopper pin 12107/second stopper pin 12209.

In addition, the first sliding rail baffle 12111/the second sliding rail baffle 12212 are used to ensure that the lower support 12101/the upper support 12203 will not be separated from the two columns 1105 during the upward or downward movement along the two columns 1105, which may result in safety accidents or equipment damage.

Referring to fig. 13, the T-frame leg 14 includes a lead screw 1401 mounted on the leg support 1103, and a presser foot 1403 connected to the bottom of the lead screw 1401 by a presser foot fastening nut 1402.

The effect of T type frame landing leg 14 is when lifting scaffold body 1 arranges the back well at the scene, in order to prevent the utility model discloses portable electric lifting scaffold moves by oneself and reduces bottom truckle 13 and bear the load, and supports the reinforcement with lifting scaffold body 1 through T type frame landing leg 14 (rotate lead screw 1401 down, lean on presser foot 1403 top subaerial).

As shown in fig. 14, the steel frame plate 2 is a metal plate product, and is laid on the lifting scaffold body 1 to serve as a platform for workers to perform construction work and temporarily store tool materials, and a plurality of anti-skid lightening holes 201 are formed thereon.

As shown in fig. 15 to 16, the movable rail 3 includes a movable rail body 301, and a rail plug 302 connected to the lower end of the movable rail 301 and matching with the movable rail insertion hole 12218.

The movable railing 3 plays a role of safety protection and can make the utility model discloses the constructor of the operation on the movable electric lifting scaffold effectively avoids the accident of falling from the high altitude.

As shown in fig. 17 to 20, the lifting driving operation of the lifting scaffold body 1 is performed in an electric driving mode, and the height adjustment of the steel frame plate 2 is performed by the combined action of the lifting device 12 and the T-shaped frame 11. In the lifting drive operating state, the T-shaped frame 11 provides a supporting and guiding function (a sliding rail function) to the lifting device 12, and the lifting device 12 provides an up (lifting) or down (lowering) driving function to the steel frame plate 2. During the lifting process of the lifting device 12, the lower driving mechanism 121 and the upper driving mechanism 122 in the lifting device 12 work synchronously with each other as a fulcrum. When the lower driving mechanism 121 is used as a fulcrum, the electric push rod 12109 pushes the upper driving mechanism 122 upward (as shown in fig. 17); when the upper driving mechanism 122 is used as a fulcrum, the electric push rod 12109 pulls the lower driving mechanism 121 upward (as shown in fig. 18); when the lower driving mechanism 121 and the upper driving mechanism 122 are respectively used as a fulcrum to perform positioning and fixing, a mode (a fixed state is shown in fig. 19, an unfixed state is shown in fig. 20) is adopted in which the first limit pin 12107 and the second limit pin 12209 (provided at the bottom of the lower driving mechanism 121 and the upper driving mechanism 122) are inserted into the limit pin holes 1106 (provided inside the two columns 1105 on the T-shaped frame 11 and arranged in the vertical direction with a spacing of 250mm), and the lifting device 12 is controlled to adopt a programmed control mode.

Control sequence of the lifting device 12 (taking the lifting device 12 in the lowest point state as an example):

1) starting a first T4 reducer 12103 in the lower driving mechanism 121 to insert a first stopper pin 12107 into the stopper pin hole 1106;

2) starting the electric push rod 12109 to make the electric push rod 12109 push the upper driving mechanism 122 upward (setting the stroke to 500mm or 250mm, determining the set value according to the operation requirement);

3) starting a second T4 reducer 12205 in the upper driving mechanism 122 to enable a second limit pin 12209 to be inserted into the limit pin hole 1106;

4) starting a first T4 reducer 12103 to enable a first limit pin 12107 to be separated from a limit pin hole 1106;

5) the electric plunger 12109 is actuated to pull the lower drive mechanism 121 upward using the upper drive mechanism 122 as a fulcrum by the electric plunger 12109.

The above steps 1) to 5) are an operation cycle, and the operation steps of the lifting device 12 in the downward operation are the same as those in the upward operation, except that the operation sequence is reversed. After each cycle of operation, the elevator apparatus 12 may be raised or lowered 500mm (or 250mm, the height being determined according to a set value).

At least two of the lifting scaffold bodies 1 are in a group and adopt a synchronous control mode.

Referring to fig. 21 to 26, the movable electric lifting scaffold of the present invention is used as follows:

1. the utility model discloses portable electric lift scaffold's lectotype:

according to the ascending demand of building or other type structures when making, installing or decorating, whitewashing the operation and select the utility model discloses portable electric lift scaffold.

2. The utility model discloses portable electric lift scaffold's concrete operation operates according to following step:

1) arranging the lifting scaffold body 1 at the position of a building (or other types of structures) needing decoration, painting or installation and modification according to the figure;

2) support the T-frame legs 14 to the ground;

3) the power supply is switched on, and the control cables of the lifting scaffold bodies 1 are connected;

4) starting the control system to lower the lifting device 12 to the lowest point (as shown in fig. 21 and 22);

5) the steel frame plate 2 is placed on an upper supporting seat 12203 in the upper driving mechanism 122 and then is bound and fixed by using an iron wire or a rope;

6) inserting the movable rail 3 into the movable rail insertion hole 12218 in the upper support base 12203;

7) the control system is activated to sequentially drive the elevator apparatus 12 upward (upward) as required by the construction work height. After finishing the finishing or renovating work, the operating system is started again to lower the lifting device 12 to the lowest point state, and then the power supply is cut off to remove the steel frame plate 2 (the installation and arrangement state of the lifting scaffold is shown in fig. 23 to 25, and the highest state of the lifting scaffold is shown in fig. 26).

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that changes and modifications to the above described embodiments will fall within the scope of the claims of the present invention as long as they are within the spirit and scope of the present invention.

Claims

1. The utility model provides a portable electric lift scaffold which characterized in that: the scaffold comprises a lifting scaffold body, a steel frame plate arranged on the lifting scaffold body, and a movable railing arranged on the lifting scaffold body;

the movable railing is inserted on the upper driving mechanism.

2. The mobile power-driven lifting scaffold of claim 1, wherein: the stand is equipped with two, two the stand symmetry sets up, two all seted up a plurality ofly on the opposite face of stand spacing pinhole, two on the stand spacing pinhole is the mirror image and arranges.

3. A mobile power lifting scaffold according to claim 2 wherein: the lower driving mechanism comprises a lower supporting seat, a first speed reducer is arranged on the lower surface of the lower supporting seat, a first forward screw and a first backward screw are respectively connected to the side surface of the first speed reducer facing the direction of the upright post, and a first limiting pin matched with the limiting pin hole is respectively connected to the first forward screw and the first backward screw;

4. A mobile power lifting scaffold according to claim 3 wherein: the upper driving mechanism comprises an upper supporting seat connected with the electric push rod, a second speed reducer is arranged on the lower surface of the upper supporting seat, the side surface of the second speed reducer facing the direction of the upright column is respectively connected with a second forward-rotating lead screw and a second reverse-rotating lead screw, and the second forward-rotating lead screw and the second reverse-rotating lead screw are respectively connected with a second limiting pin matched with the limiting pin hole;

5. A mobile power lifting scaffold according to claim 3 wherein: the lower supporting seat comprises a lower supporting seat body, the lower surface of the lower supporting seat body is provided with a limiting pin guide support used for placing the first limiting pin and a speed reducer mounting panel used for mounting the first speed reducer, and two side edges of the lower supporting seat body are provided with electric push rod mounting lug plates used for mounting the electric push rod.

6. The mobile power-driven lifting scaffold of claim 4, wherein: the upper supporting seat comprises an upper supporting seat body, the lower surface of the upper supporting seat body is provided with a limiting pin guide support for placing a second limiting pin, a connecting support for installing a speed reducer installing panel of a second speed reducer and a connecting support for connecting the electric push rod, frame plate fixing rods for erecting the steel frame plate are arranged on two side edges of the upper supporting seat body, and two end portions of each frame plate fixing rod are provided with movable railing jacks.

7. The mobile power-driven lifting scaffold of claim 1, wherein: the T-shaped frame supporting leg comprises a screw rod arranged on the supporting leg support and a pressure foot connected to the bottom of the screw rod through a pressure foot fastening nut.

8. The mobile power-driven lifting scaffold of claim 1, wherein: a plurality of anti-skidding lightening holes are formed in the steel frame plate.

9. The mobile power-driven lifting scaffold of claim 6, wherein: the movable railing comprises a movable railing body and a railing plug which is connected to the lower end of the movable railing and is matched with the movable railing plug hole.