CN116335378A

CN116335378A - Liftable scaffold and construction method thereof

Info

Publication number: CN116335378A
Application number: CN202310308396.5A
Authority: CN
Inventors: 盛庆萍; 盛晶; 徐爱玲; 邱向军
Original assignee: Jinhua Yahu Tools Co Ltd
Current assignee: Jinhua Yahu Tools Co Ltd
Priority date: 2023-03-27
Filing date: 2023-03-27
Publication date: 2023-06-27

Abstract

The invention relates to a liftable scaffold, which comprises a horizontal workbench and supporting frames arranged on two sides of the workbench, wherein the supporting frames comprise two longitudinal rods; according to the invention, the lifting of the workbench is realized through a single power source, the synchronous consistency is ensured, and the operation of the workbench is convenient for operators to stand on. By utilizing the characteristics of the anti-falling mechanism, the anti-falling mechanism is used as a climbing fulcrum in a locking state, so that the workbench can stably lift under the starting of the power device, and the operation efficiency is improved. The lifting structure of the workbench can achieve cross-layer arrival or discharge, and is very convenient for erecting a multi-layer scaffold.

Description

Liftable scaffold and construction method thereof

Technical Field

The invention relates to the technical field of scaffolds, in particular to a lifting scaffold.

Background

The scaffold is used as a construction tool, and aims to provide a safety platform for operators, so that the construction process is more efficient and safer. Various types of scaffolds have appeared in the market, such as traditional set-up scaffolds, mobile scaffolds, liftable scaffolds, etc.

In the traditional erection type scaffold, the supporting legs, the cross beams and other parts need to be installed one by one, the construction process is complicated, and potential safety hazards exist. The movable scaffold can move at any time by installing casters, but the stability is generally suitable for smaller construction areas. The lifting scaffold is a scaffold with lifting function, can be adjusted in height according to the requirement, and improves the construction efficiency, but the integral structure of the lifting scaffold is generally heavier than that of the traditional building scaffold and the traditional movable scaffold, mainly because the lifting mechanism and the supporting structure of the lifting scaffold cannot be easily detached.

First, the lifting mechanism of the lifting scaffold comprises lifting rods, ratchet bars, gears, motors and the like, which are connected together by connectors to form a complex lifting mechanism. Secondly, the lifting scaffolding requires stabilizers and fixtures on the undercarriage to increase its stability, and these additional structures also add weight and complexity to the overall scaffolding.

Chinese patent CN205804909U discloses a liftable scaffold comprising a base frame and a cross ladder arranged on top of the base frame. The underframe is composed of four vertical supporting legs and pull rods connected between the four supporting legs. Wherein, the supporting leg is inside to be provided with the lifter, and the top of lifter links to each other with horizontal ladder to support horizontal ladder and be located the top of chassis. The transverse ladder is provided with a ratchet bar, and the underframe is provided with a gear meshed with the ratchet bar and a motor for driving the gear to rotate. The motor drives the gear to rotate, so that the ratchet bar is driven to act, and the transverse ladder is lifted on the underframe. However, the scaffold is heavy and the lifting table is limited to the current layer, and cannot be lifted across multiple layers, so that the construction height range is limited. This is because the scaffold is structurally designed to be able to be lifted up and down only on the same horizontal plane, and cannot be lifted up and down across different horizontal planes. The need for multi-layer composite stacking construction needs to be achieved using other types of scaffolding or in combination with other devices.

In addition to limiting the height range of construction, there is another problem with existing lifting scaffolds, namely that in double-deck and above construction, the table top thereof needs to be delivered upwards from the ground for installation, at least two persons are required to operate, the labor intensity is high and potential safety hazards exist. Meanwhile, as the construction heights of the double layers and above are higher, the operation process has a larger safety risk, so that the structural design of the scaffold needs to be further researched and developed and improved to improve the stability, the safety and the operation convenience of the scaffold, and the construction requirements of different heights are met.

Disclosure of Invention

The invention aims at the problems and provides a lifting scaffold which is convenient to split structurally, and the working table surface of the scaffold can automatically achieve cross-layer arrival.

The invention aims at realizing the following technical scheme: the utility model provides a liftable scaffold frame, includes horizontal table and installs the support frame in the workstation both sides, the support frame includes two longitudinal bars, its characterized in that is equipped with first slider on the support frame, and first slider is installed on the longitudinal bar slidably, and the upper end of first slider is equipped with bellied supporting shoe, and the four corners lock joint of horizontal table is on the supporting shoe, is equipped with bellied fixture block on the supporting shoe, and horizontal table bottom is equipped with the draw-in groove of adaptation fixture block, and horizontal table passes through the mode that the fixture block detained into the draw-in groove and installs on the supporting shoe;

the horizontal workbench slides up and down on the longitudinal rod through the first sliding piece so as to realize lifting.

Preferably, the longitudinal rod is further provided with a second sliding part, the second sliding part is located below the first sliding part, the lower end of the horizontal workbench is provided with a transmission supporting assembly, the transmission supporting assembly comprises two pairs of frames and a transmission rod, the frames are located at two ends of the transmission rod respectively and are symmetrical with the transmission rod as a center, the horizontal workbench is provided with a power device, one end of the transmission rod is connected with the power device, the power device drives the transmission rod to rotate, the transmission rod is provided with a first threaded part and a second threaded part with opposite threaded directions, the first threaded part and the second threaded part are respectively provided with a first moving block and a second moving block, and the first moving block and the second moving block move on the first threaded part and the second threaded part in a threaded rotation mode.

Preferably, the frame comprises support rods on two sides and a connecting rod for connection between the two support rods, the two pairs of frames respectively penetrate through the first moving block and the second moving block through the connecting rod, the frames are respectively connected with the first moving block and the second moving block, and the support rods are detachably hinged to the second sliding piece.

Preferably, the two sides of the horizontal workbench are provided with sliding grooves, two ends of the connecting rod protrude out and are positioned in the sliding grooves, two ends of the connecting rod are provided with limiting blocks, and the outer diameter of each limiting block is larger than the corresponding sliding groove.

Preferably, the power device comprises a motor, a transmission shaft, a fixing piece and a shell, wherein the shell is positioned on the horizontal workbench, the motor is arranged in the shell, the motor and the transmission shaft are connected and transmitted through a transmission belt, and the transmission shaft extends to the lower end of the horizontal workbench and is connected with the end part of the transmission shaft in a transmission way.

Preferably, the fixing piece is arranged at the lower end of the horizontal workbench, the transmission rod and the transmission shaft penetrate through the fixing piece, and the first sliding piece is provided with an anti-falling locking mechanism.

Preferably, each anti-falling locking mechanism comprises a locking seat, a locking cover and a claw in the locking seat, the locking cover covers the locking seat, a ratchet bar with the same length as the length of the longitudinal bar is arranged on one outward side of each longitudinal bar, and the claw is adapted to the ratchet bar.

Preferably, the claw is hinged on the locking seat, a spring is arranged between the locking cover and the claw, a pressing block and a stirring bar are arranged between the locking cover and the locking seat, the lower end of the stirring bar is fixedly arranged on the claw, and the upper end of the stirring bar is abutted against the pressing block. The front end of the locking cover is provided with a knob, the knob is propped against the pressing block, the upper end of the locking cover is also provided with a button, the pressing block is provided with a lug for adapting to the button, the lug is in an inclined plane shape, and the lower end of the button is also in an inclined plane shape.

Preferably, the second sliding piece is provided with an adjusting button, and the second sliding piece can also slide on the longitudinal rod and is locked by the adjusting button.

The invention also provides a construction method for the scaffold, which comprises the following steps:

s1, building scaffold

a. Preparing a matched set, namely preparing a corresponding matched set according to the number of layers required by the scaffold;

b. building a first layer of scaffold: the four longitudinal rods are respectively provided with pulleys and placed at four corners of the horizontal workbench, then the first sliding piece and the second sliding piece are arranged on the longitudinal rods, the second sliding piece is fixed by an adjusting button, then the transmission supporting component is arranged at the lower end of the horizontal workbench and connected with the first sliding piece, and finally, the power device is arranged to be connected with the transmission rod;

c. building a second layer and the above scaffold: the four longitudinal rods are extended to a preset height, a horizontal workbench is arranged at the joint position of each layer, a first sliding piece and a second sliding piece are installed, the second sliding piece is fixed by an adjusting button, the joint position of each layer covers the joint positions of the upper layer and the lower layer at the same time, and the second sliding piece is locked;

d. installing an anti-falling locking mechanism: each longitudinal rod is provided with a ratchet bar, and the anti-falling locking mechanism is clamped on the ratchet bars through the clamping jaws;

e. installing a guardrail: guard rails are arranged on two sides of each layer of workbench;

f. debugging and checking: after the scaffold is built, checking all connecting parts, locking mechanisms and power devices to ensure that all parts are firmly connected and normally run, and then performing test running on the scaffold to ensure that the scaffold can safely and stably lift;

s2, adjusting up-down position of horizontal workbench

And (3) lifting and adjusting the horizontal workbench: after the assembly of the components is completed, the ascending operation is performed:

a. ensuring that the adjusting button is in a released state;

b. starting the power device and rotating the power device to enable the first moving block and the second moving block to move towards the center respectively, stopping the power device when the second sliding piece moves to be close to the bottom of the first sliding piece, and locking the second sliding piece;

c. restarting the power device and reversely rotating to enable the first moving block and the second moving block to respectively move outwards, pushing the whole horizontal workbench upwards through the supporting rods, stopping the power device after reaching a proper height, and locking the second sliding piece, so that single lifting operation is completed;

and (3) lowering and adjusting the horizontal workbench, and after the assembly of each component is completed, performing lowering operation:

a. the adjusting button is in a locking state, and the anti-falling locking mechanism is unlocked;

b. starting a power device and rotating the power device to enable the first moving block and the second moving block to move towards the center respectively, enabling the supporting angle of the supporting rod to turn towards the horizontal direction from the vertical direction, driving the horizontal workbench to descend, stopping the power device when the horizontal workbench descends to a preset position, and adjusting the anti-falling locking mechanism to an effective state at the moment to enable the horizontal workbench to stably stop;

c. the adjusting button is adjusted to be in a loosening state, then the power device is restarted and reversely rotates, the first moving block and the second moving block respectively move outwards, the supporting angle of the supporting rod is turned from the trend level to the trend vertical, the second sliding piece slides downwards along with the second sliding piece in the process, and the horizontal workbench can be gradually lowered by repeating the actions.

In summary, compared with the prior art, the invention has the following advantages:

1. the lifting of the workbench is realized through a single power source, so that synchronous consistency is ensured, and operators can conveniently stand on the workbench to operate. By utilizing the characteristics of the anti-falling mechanism, the anti-falling mechanism is used as a climbing fulcrum in a locking state, so that the workbench can stably lift under the starting of the power device, and the operation efficiency is improved.

2. The lifting structure of the workbench can achieve cross-layer arrival or discharge, and is very convenient for erecting a multi-layer scaffold. Through the cooperation of power device and adjusting knob, knob or button, realize the workstation and jump the layer step by step, avoided the trouble of delivering from ground.

3. All the parts are the same as the quick-dismantling scaffold on the market, and are easy to disassemble and convenient to transport and store.

4. In the aspect of safety, the first sliding part is provided with the anti-falling mechanism, and the anti-falling mechanism is in a locking state in a normal state, so that the first sliding part is prevented from sliding downwards, and the safety of a user standing on the workbench is ensured. Locking of supporting component and workstation four corners lock joint have further improved the stability of workstation on first slider, have ensured user's safety and good experience.

In a word, the lifting stability, safety and convenience of the workbench are realized through ingenious design, and the efficiency and the safety coefficient of scaffold operation are improved.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is an exploded view of the present invention.

Fig. 3 is a perspective view of the second embodiment of the present invention.

Fig. 4 is an exploded view of the power plant of the present invention.

Fig. 5 is a schematic view of the anti-falling mechanism of the present invention.

Fig. 6 is a partial enlarged view at a in fig. 2.

Reference numerals: 1. horizontal work table 2, support frame 3, vertical pole, 4, horizontal pole, 5, first slider, 6, second slider, 7, supporting shoe, 8, fixture block, 9, draw-in groove, 10, transmission subassembly, 11, frame, 12, transmission pole, 13, power device, 14, first screw thread portion, 15, second screw thread portion, 16, first movable block, 17, second movable block, 18, bracing piece, 19, connecting rod, 20, motor, 21, transmission shaft, 22, mounting, 23, anti-falling locking mechanism, 24, ratchet bar, 25, locking block, 26, locking cover, 27, jack catch, 28, spring, 29, press block, 30, press bar, 31, knob, 32, button, 33, lug, 34, adjusting button, 35, guardrail, 37, chute, 38, stopper, 39, casing.

Detailed Description

The invention is further described below with reference to embodiments shown in the drawings in which:

example 1

As shown in fig. 1-2, a liftable scaffold comprises a horizontal workbench 1 and supporting frames 2 arranged on two sides of the workbench. The support frame 2 comprises two longitudinal bars 3 and a transverse bar 4 arranged between the two longitudinal bars 3. The support frame 2 is provided with a first slider 5, and the first slider 5 is slidably mounted on the side rail 3. The upper end of the first sliding piece 5 is provided with a raised supporting block 7, and four corners of the horizontal workbench 1 are buckled on the supporting block 7. The supporting block 7 is provided with a raised clamping block 8, and the bottom of the horizontal workbench 1 is provided with a clamping groove 9 for adapting to the clamping block 8. The horizontal workbench 1 is arranged on the supporting block 7 in a mode that the clamping block 8 is buckled into the clamping groove 9, so that the situation that the workbench falls off in the use process can be effectively reduced, and meanwhile, the horizontal workbench 1 is convenient to detach. The top and bottom of the longitudinal bars 3 can be closely nested with each other, thereby cooperating to complete a continuous multi-layer erection of the scaffold upwards.

The horizontal table 1 slides up and down on the vertical rod 3 through the first sliding member 5 to achieve lifting. The longitudinal bar 3 is further provided with a second slider 6, the second slider 6 being located below the first slider 5. The lower end of the horizontal workbench 1 is provided with a transmission supporting assembly 10, the transmission supporting assembly 10 comprises two pairs of frames 11 and transmission rods 12, and the frames 11 are respectively positioned at two ends of the transmission rods 12 and are symmetrical with the transmission rods 12 as the center. The horizontal workbench 1 is provided with a power device 13, and the first sliding piece 5 is lifted and lowered through the power device 13 and the transmission supporting component 10. One end of the transmission rod 12 is connected with a power device 13, and the power device 13 drives the transmission rod 12 to rotate. The transmission rod 12 is provided with a first threaded part 14 and a second threaded part 15 with opposite threaded directions, the first threaded part 14 and the second threaded part 15 are respectively provided with a first moving block 16 and a second moving block 17, and the first moving block 16 and the second moving block 17 move on the first threaded part 14 and the second threaded part 15 in a threaded rotation mode.

The frame 11 includes support bars 18 on both sides and a connection bar 19 for connection between the two support bars 18. The two pairs of frames 11 pass through the first moving block 16 and the second moving block 17 respectively by connecting rods 19, so that the frames 11 are connected with the first moving block 16 and the second moving block 17 respectively. The support bar 18 is detachably hinged to the second slider 6. When the second slider 6 is fixed, the power device 13 drives the transmission rod 12 to rotate. Since the screw directions of the first screw part 14 and the second screw part 15 are opposite, the first moving block 16 and the second moving block 17 are reversely displaced. When the first moving block 16 is displaced leftward, the second moving block 17 is displaced rightward, the support bar 18 is rotated upward at the hinge point, and the transmission bar 12 is lifted and drives the first slider 5 to be lifted, thereby lifting the horizontal table 1. When the first moving block 16 is displaced rightward, the second moving block 17 is displaced leftward, the support bar 18 is rotated downward at the hinge point, and the transmission bar 12 descends and drives the first slider 5 to descend, thereby lowering the horizontal table 1.

The two sides of the horizontal workbench 1 are provided with sliding grooves 37, and two ends of the connecting rod 19 protrude and are positioned in the sliding grooves 37. During the lifting and lowering of the horizontal table 1, the connecting rod 19 moves in the chute 37. In addition, the two ends of the connecting rod 19 are provided with limiting blocks 38, and the outer diameter of each limiting block 38 is larger than that of each sliding groove 37, so that the horizontal workbench 1 can be further fixed, and the stability of the horizontal workbench is improved.

The power unit 13 includes a motor 20, a transmission shaft 21, a fixing member 22, and a housing 39. The housing 39 is located on the horizontal table 1, and the motor 20 is installed in the housing 39. The motor 20 and the transmission shaft 21 are connected and transmitted through a transmission belt. The transmission shaft 21 extends to the lower end of the horizontal workbench 1 and is in transmission connection with the end part of the transmission rod 12. When the motor 20 rotates, power is transmitted to the transmission rod 12 through the transmission shaft 21 to drive the transmission rod 12 to rotate, so that the horizontal workbench 1 is lifted.

The fixing member 22 is installed at the lower end of the horizontal table 1, and the transmission rod 12 and the transmission shaft 21 pass through the fixing member 22. Therefore, the transmission mechanism can be effectively protected, foreign matters are prevented from falling into the transmission mechanism in the operation process, and the safety and reliability of the equipment are ensured. The first sliding part 5 is provided with an anti-falling locking mechanism 23, and the first sliding part 5 is locked through the anti-falling locking mechanism 23, so that the horizontal workbench 1 is prevented from falling accidentally in the use process.

Each fall arrest lock mechanism 23 includes a lock seat 25, a lock cover 26, and a claw 27 in the lock seat 25, the lock cover 26 covering the lock seat 25. A ratchet bar 24 which is equal to the length of the longitudinal bars 3 is arranged on the outward side of each longitudinal bar 3, and a claw 27 is matched with the ratchet bar 24. The anti-falling locking mechanism 23 is clamped on the ratchet bar 24 through the clamping jaw 27, so that the first sliding piece 5 can ascend and cannot descend in a normal state, and the safety of a user during working is guaranteed.

The claw 27 is hinged on the locking seat 25, and a spring 28 is arranged between the locking cover 26 and the claw 27. A pressing block 29 and a toggle bar 30 are arranged between the locking cover 26 and the locking seat 25. The lower end of the toggle bar 30 is fixedly arranged on the claw 27, and the upper end is abutted against the pressing block 29. The pressing block 29 is triggered to move to the abutting side, so that the lower end of the claw 27 is opened, and the clamping state of the claw 27 and the ratchet bar 24 is released. At this time, the horizontal table 1 can be raised or lowered by the cooperation of the transmission support assembly 10 and the power unit 13. In a normal state, the anti-falling locking mechanism 23 is in a locking state, and the claw 27 is pressed by the spring 28, so that the claw 27 and the ratchet bar are kept in a clamping state.

The front end of the locking cover 26 is provided with a knob 31, and the knob 31 abuts against the pressing block 29. The user can screw in the knob 31 to push the pressing block 29 to displace inward, releasing the limit of the fall preventing locking mechanism 23. The upper end of the locking cover 26 is also provided with a button 32, and the pressing block 29 is provided with a lug 33 for adapting to the button. The bump 33 is inclined, and the lower end of the button 32 is also inclined. By pressing the button 32, the inclined surface at the lower end of the button 32 pushes the inclined surface on the projection 33, thereby pushing the pressing block 29 to displace inward and releasing the limit of the anti-falling locking mechanism 23. These two ways of releasing the limit make the operation more convenient: the user can quickly operate the table by pressing the button 32, and can select one mode to release the limit according to personal preference on the ground.

The second sliding piece 6 is provided with an adjusting button 34, and the second sliding piece 6 can also slide on the longitudinal rod 3 and is locked by the adjusting button 34. The higher the maximum lifting distance of the horizontal table 1 is, the higher the second slider 6 is slid to the higher position; if the second sliding member 6 is slid to the lower position, the lower the maximum lifting distance of the horizontal table 1 is, so as to meet the use requirements of users on different heights.

According to the workbench disclosed by the invention, each adjusting button 34 can be replaced by an electric cylinder for locking or an electric motor for locking, so that an operator can independently stand on the workbench 1 for operating and lifting, and the labor efficiency can be greatly improved.

Guard rails 35 are arranged on two sides of the workbench 1 to provide protection for a user and reduce the falling situation from the workbench 1 during working. The guard rail 35 is inserted on the first slider 5, and is convenient to detach.

The pulley is arranged at the bottom of the longitudinal rod 3, so that a user can conveniently move to different positions to work. The design ensures that the workbench not only has a safety protection function, but also can conveniently adjust the position, thereby meeting the requirements of users in different scenes.

The construction method of the scaffold refers to the following steps:

1. scaffold for construction

1. The preparation of the fittings, according to the number of layers required for the scaffold, the corresponding fittings are prepared, assuming three layers are set up, and all the fittings are arranged in three sets, the horizontal table 1 needs to be provided with at least three sets and more, because at the junction position of each layer, one horizontal table 1 must be arranged for bridging, i.e. the first sliding member 5 covers the junction position of the upper layer and the lower layer at the same time, and the second sliding member 6 locks, thus achieving the effect of stabilizing the whole.

2. Building a first layer of scaffold: the four vertical bars 3 are respectively provided with pulleys 36 and placed at four corners of the table 1. Then, the first slider 5 and the second slider 6 are attached to the side rail 3, and the second slider 6 is fixed by the adjustment knob 34. Next, the driving support assembly 10 is installed at the lower end of the horizontal table 1, and the first slider 5 is coupled. Finally, the power unit 13 is installed so as to be connected to the transmission rod 12.

3. Building a second layer scaffold and a third layer scaffold: four vertical bars 3 are extended to a predetermined height, and a horizontal table 1 is provided at the junction position of each layer. The first slider 5 and the second slider 6 are installed, and the second slider 6 is fixed with the adjusting knob 34. The upper and lower layers of the connection position are covered at the same time at each layer of connection position, and the second sliding piece 6 is locked, so that the whole stabilization effect is achieved.

4. Installing a falling-preventing locking mechanism 23: the ratchet bar 24 is arranged on each longitudinal rod 3, and the anti-falling locking mechanism 23 is clamped on the ratchet bar 24 through the clamping jaw 27, so that the first sliding piece 5 can be lifted up and cannot be lowered down, and the safety of a user is ensured.

5. Mounting guardrail 35: guard rails 35 are installed on both sides of each layer of the work table 1 to provide protection for a user and reduce the falling off from the work table 1 during work. Ensuring that the rail 35 is firmly inserted on the first slider 5.

6. Debugging and checking: after the scaffold is built, all the connecting parts, the locking mechanism and the power device are inspected, so that all the parts are firmly connected and normally operated. Then, the scaffold is subjected to trial operation, so that the scaffold can be safely and stably lifted.

2. Vertical position adjustment of horizontal workbench

1. And (3) lifting and adjusting the horizontal workbench: after the assembly of the components is completed, the ascending operation is performed:

a. ensuring that the knob 34 is in the released condition, in which the fall arrest lock mechanism 23 is in an active fall arrest condition without operation, can be accomplished by depressing the knob 32 or rotating the knob 31 to disengage the pawl 27 from the ratchet bar 24;

b. the power device 13 is started and rotated to move the first moving block 16 and the second moving block 17 toward the center, respectively. Thereby, the support bar 18 will drag the second slider 6 to move upwards. When the second slider 6 moves to near the bottom of the first slider 5, the power means 13 is stopped and the second slider 6 is locked;

c. the power unit 13 is restarted and rotated in the reverse direction, so that the first moving block 16 and the second moving block 17 are moved to the outside, respectively. The horizontal table 1 is pushed up as a whole by the support bar 18. When the proper height is reached, the power means 13 is stopped and the second slider 6 is locked. This completes a single ascent operation.

2. And (3) lowering and adjusting the horizontal workbench, and after the assembly of each component is completed, performing lowering operation:

a. the adjusting button 34 is in a locking state, and the anti-falling locking mechanism 23 is unlocked, namely in an invalid anti-falling state;

b. the power device 13 is started and rotated to move the first moving block 16 and the second moving block 17 toward the center, respectively. Since the anti-falling locking mechanism 23 is in a failure state, the supporting angle of the supporting rod 18 turns from vertical to horizontal, so that the horizontal workbench is driven to descend. When the horizontal workbench falls to a preset position, the power device 13 is stopped, and the anti-falling locking mechanism 23 is adjusted to an effective state at the moment, so that the horizontal workbench 1 is stably parked;

c. the adjusting knob 34 is adjusted to a released state, and then the power device 13 is restarted and rotated in the reverse direction, so that the first moving block 16 and the second moving block 17 are moved to the outside, respectively. The support angle of the support bar 18 turns from horizontal to vertical and the second slide 6 slides down in the process. The descending of the horizontal workbench can be gradually completed by repeating the above actions.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a liftable scaffold frame, includes horizontal table (1) and installs support frame (2) in the workstation both sides, support frame (2) are equipped with first slider (5) including two vertical bars (3) on support frame (2), a serial communication port, first slider (5) slidable installs on vertical bars (3), the upper end of first slider (5) is equipped with bellied supporting shoe (7), the four corners lock joint of horizontal table (1) is on supporting shoe (7), be equipped with bellied fixture block (8) on supporting shoe (7), horizontal table (1) bottom is equipped with draw-in groove (9) of adaptation fixture block (8), horizontal table (1) are installed on supporting shoe (7) through the mode of fixture block (8) lock income draw-in groove (9);

the horizontal workbench (1) slides up and down on the vertical rod (3) through the first sliding piece (5) so as to realize lifting.

2. Scaffolding according to claim 1, characterized in that the vertical rod (3) is further provided with a second sliding part (6), the second sliding part (6) is located below the first sliding part (5), the lower end of the horizontal workbench (1) is provided with a transmission supporting component (10), the transmission supporting component (10) comprises two pairs of frames (11) and a transmission rod (12), the frames (11) are located at two ends of the transmission rod (12) respectively and are symmetrical with the transmission rod (12) as a center, the horizontal workbench (1) is provided with a power device (13), one end of the transmission rod (12) is connected with the power device (13), the power device (13) drives the transmission rod (12) to rotate, the transmission rod (12) is provided with a first threaded part (14) and a second threaded part (15) with opposite thread directions, the first threaded part (14) and the second threaded part (15) are respectively provided with a first moving block (16) and a second moving block (17), and the first moving block (16) and the second moving block (17) are in a threaded rotation mode on the first threaded part (14) and the second threaded part (15).

3. Scaffolding according to claim 2, characterized in that the frame (11) comprises two side support bars (18) and a connecting bar (19) for connection between the two support bars (18), the two pairs of frames (11) respectively passing through the first moving block (16) and the second moving block (17) by means of the connecting bar (19), the frames (11) being respectively connected to the first moving block (16) and the second moving block (17), the support bars (18) being detachably hinged to the second slide (6).

4. Scaffolding according to claim 1, characterized in that the horizontal table (1) is provided with sliding grooves (37) on both sides, the connecting rods (19) are provided with limiting blocks (38) on both ends, protruding from both ends and located in the sliding grooves (37), the limiting blocks (38) are provided with outer diameters larger than the sliding grooves (37).

5. Scaffolding according to claim 2, characterized in that the power unit (13) comprises a motor (20), a transmission shaft (21), a fixing element (22) and a housing (39), the housing (39) is located on the horizontal table (1), the motor (20) is mounted in the housing (39), the motor (20) and the transmission shaft (21) are connected and transmitted by means of a transmission belt, and the transmission shaft (21) extends to the lower end of the horizontal table (1) and is in transmission connection with the end of the transmission rod (12).

6. Scaffolding according to claim 5, characterized in that the fixing element (22) is mounted at the lower end of the horizontal table (1), the transmission rod (12) and the transmission shaft (21) pass through the fixing element (22), and the first sliding element (5) is provided with a fall-preventing locking mechanism (23).

7. Scaffolding according to claim 6, characterized in that each fall arrest locking mechanism (23) comprises a locking seat (25), a locking cover (26) and a claw (27) in the locking seat (25), the locking cover (26) covers the locking seat (25), each longitudinal bar (3) is provided with a ratchet bar (24) on the outward side of the length of the longitudinal bar (3), the claw (27) being adapted to the ratchet bar (24).

8. The scaffold according to claim 7, wherein the claw (27) is hinged on the locking seat (25), a spring (28) is arranged between the locking cover (26) and the claw (27), a pressing block (29) and a stirring bar (30) are arranged between the locking cover (26) and the locking seat (25), the lower end of the stirring bar (30) is fixedly arranged on the claw (27), the upper end of the stirring bar is abutted against the pressing block (29), a knob (31) is arranged at the front end of the locking cover (26), the knob (31) is abutted against the pressing block (29), a button (32) is further arranged at the upper end of the locking cover (26), a lug (33) for adapting to the button is arranged on the pressing block (29), the lug (33) is in an inclined plane shape, and the lower end of the button (32) is also in an inclined plane.

9. Scaffolding according to claim 1, characterized in that the second slide (6) is provided with an adjusting knob (34), and that the second slide (6) is also slidable on the longitudinal bar (3) and is locked by means of the adjusting knob (34).

10. The construction method of the scaffold refers to the following steps:

a construction method using the scaffold of any one of claims 1 to 9, characterized by the steps of:

s1, building scaffold

b. building a first layer of scaffold: the four longitudinal rods (3) are respectively provided with pulleys (36) and are placed at four corners of the horizontal workbench (1), then the first sliding piece (5) and the second sliding piece (6) are arranged on the longitudinal rods (3), the second sliding piece (6) is fixed by an adjusting button (34), then the transmission supporting component (10) is arranged at the lower end of the horizontal workbench (1) and connected with the first sliding piece (5), and finally the power device (13) is arranged to be connected with the transmission rod (12);

c. building a second layer and the above scaffold: the four longitudinal bars (3) are extended to a preset height, a horizontal workbench (1) is arranged at the joint position of each layer, a first sliding piece (5) and a second sliding piece (6) are installed, the second sliding piece (6) is fixed by an adjusting button (34), the joint position of each layer is covered at the joint position of the upper layer and the lower layer, and the second sliding piece (6) is locked;

d. installing an anti-falling locking mechanism (23): a ratchet bar (24) is arranged on each longitudinal rod (3), and the anti-falling locking mechanism (23) is clamped on the ratchet bar (24) through a claw (27);

e. mounting guardrail (35): guard rails (35) are arranged on two sides of each layer of workbench 1;

s2, adjusting up-down position of horizontal workbench

a. ensuring that the adjusting knob (34) is in a released state;

b. starting the power device (13) and rotating to enable the first moving block (16) and the second moving block (17) to move towards the center respectively, stopping the power device (13) when the second sliding piece (6) moves to be close to the bottom of the first sliding piece (5), and locking the second sliding piece (6);

c. restarting the power device (13) and reversely rotating to enable the first moving block (16) and the second moving block (17) to respectively move outwards, pushing the whole horizontal workbench (1) upwards through the supporting rod (18), stopping the power device (13) and locking the second sliding piece (6) after the horizontal workbench reaches a proper height, and thus completing single lifting operation;

a. the adjusting button (34) is in a locking state, and the anti-falling locking mechanism (23) is unlocked;

b. starting a power device (13) and rotating the power device to enable a first moving block (16) and a second moving block (17) to respectively move towards the center, wherein the supporting angle of a supporting rod (18) is from tending to vertical steering to tending to horizontal, so that a horizontal workbench is driven to descend, and when the horizontal workbench descends to a preset position, stopping the power device (13), and at the moment, adjusting an anti-falling locking mechanism (23) to an effective state to enable the horizontal workbench (1) to stably park;

c. the adjusting button (34) is adjusted to be in a loosening state, then the power device (13) is restarted and reversely rotates, the first moving block (16) and the second moving block (17) respectively move outwards, the supporting angle of the supporting rod (18) turns from horizontal to vertical, the second sliding piece (6) slides downwards along with the supporting angle in the process, and the horizontal workbench can be gradually lowered by repeating the actions.