CN212078614U - Semi-automatic conversion scaffold - Google Patents

Abstract

The utility model discloses a semi-automatic conversion scaffold, which comprises an inner frame component (1), an outer frame component (2), a pedal plate group (3) and a conversion brace rod (4); the pulley blocks (1-3) at the bottom of the inner frame assembly (1) can realize convenient movement of a semi-automatic conversion scaffold; the inclined supports (1-2) can improve the stability and safety of the semi-automatic conversion scaffold; the inner frame assembly (1) and the outer frame assembly (2) are simple in structure and convenient and fast to assemble; the conversion stay bar (4) is simple to operate, can realize the conversion that the inner frame component (1) and the outer frame component (2) simultaneously touch the ground and the inner frame component (1) independently touches the ground, ensures that an operator can safely work on the semi-automatic conversion scaffold, simultaneously realizes convenient movement, saves the time of the operator, and improves the working efficiency and the safety factor; the semi-automatic conversion scaffold is simple in structure, convenient to operate, practical, stable, safe, reliable and high in applicability.

Description

Semi-automatic conversion scaffold

Technical Field

The utility model relates to an engineering apparatus, especially a can safe handling and convenient scaffold frame that removes.

Background

In engineering construction, safety is particularly important, and safe production is used as a basic condition for protecting the property safety of people and developing social productivity and promoting the sustainable, healthy and rapid development of society and economy and is an important mark for social civilization and progress; the safety guarantee is the embodiment of the life quality of people and is the important content for comprehensively building the ambitious goal of the well-off society.

The chinese invention with patent number 201410601071.7 discloses a scaffold, which comprises upright posts, a long horizontal tube, a first connecting fastener, a second connecting fastener and a bearing plate; the first connecting fastener is used for connecting the two stand columns, so that the device is convenient and quick, and materials are saved; fixing the long transverse pipe on the upright post by using a second connecting fastener; the loading board is recycled, hangs and establishes on long violently managing, has both played the load effect, plays the connection effect in the scaffold again, builds the scaffold and makes things convenient for easily, but poor stability, and the workman can't remove the scaffold according to the work needs on the scaffold during operation, removes inconveniently.

The chinese utility model with patent number 201821116955.3 discloses a scaffold, which comprises a standing plate, wherein two ends of the standing plate are respectively connected with a side frame, the side frame comprises two vertical pipes which are vertically arranged, a plurality of cross rods which are vertically arranged are fixed between the two vertical pipes at the same end of the standing plate, and universal wheels are fixed at the lower ends of the vertical pipes; the utility model discloses can realize the quick adjustment board height of standing, solve board height control operation difficulty of standing, but the security is low, and the workman may change the scaffold position because of the flexibility of universal wheel when working on the scaffold, and the workman of just being in the operation brings the personal safety problem.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the problem, a scaffold that can safe handling and convenient removal has been designed.

Realize above-mentioned purpose the utility model discloses a technical scheme does: a semi-automatic conversion scaffold, its characteristics include: the device comprises an inner frame assembly, an outer frame assembly, a pedal group and a conversion support rod;

the inner frame component comprises upright rods vertically arranged at two sides, inclined supports for fixing the two upright rods and a pulley block welded at the bottoms of the upright rods;

one side of the vertical rod is of a climbing type vertical ladder structure; an inner frame conversion buckle is arranged at the upper position of the middle part of one side of the vertical ladder; inner sleeve fixing buckles are respectively distributed at the upper position and the lower position of the middle part of the two sides of the vertical rod, and inclined support fixing buckles are respectively arranged at the upper part and the lower part of the vertical rod; the inner sleeve fixing buckle is made of flexible materials;

the inclined support is of a hollow cylindrical structure, and inclined support fixing through holes are formed in two ends of the inclined support respectively; one of the inclined supports is provided with an inclined support assembly through hole in the middle, and the other inclined support is provided with an inclined support fixing pin protruding in a cylindrical shape in the middle;

the pulley block is a known universal wheel structure with a self-locking device;

the outer frame assembly is formed by welding a cylindrical cross rod and two cylindrical vertical rods in 90 degrees respectively; the middle upper position and the middle lower position of the vertical rod are respectively sleeved with a fixed sleeve;

one side of the fixed sleeve is a hollow cylindrical outer frame sleeved with a through hole, the middle of the fixed sleeve is in a welded hollow rectangular shape, and the other side of the fixed sleeve is a hollow cylindrical inner frame sleeved with a through hole; an inner frame sleeve through hole is formed in the middle of one side of the inner frame sleeved through hole;

the pedal group comprises a lower pedal and an upper pedal;

the lower pedal is of a rectangular structure in a shape like Chinese character 'tian', and a lower pedal fixing hook is welded on the short side of the lower pedal; the long side surface of the lower pedal close to one side of the upper pedal is provided with a conversion stay bar fixing ring; the upper pedal is of a rectangular structure in a shape like Chinese character 'tian', and an upper pedal fixing hook is welded on the short side of the upper pedal;

the conversion support rod comprises a central conversion rod in the middle, a conversion cross rod and conversion vertical rods on two sides;

the top of the central conversion rod is a cake-shaped pressing platform, the lower part of the central conversion rod is of an inverted U-shaped structure, and the middle part of the central conversion rod is provided with a central rod through hole;

one end of the conversion cross rod close to the central conversion rod is a central rod connecting end; one end of the conversion transverse rod, which is close to the conversion vertical rod, is of a V-shaped structure, and a transverse rod through hole is formed at the tail of the conversion transverse rod;

the top of the conversion vertical rod is a hollow circular outer frame sleeve ring, the middle part of the conversion vertical rod is an upper conversion vertical rod, and the lower part of the conversion vertical rod is a lower conversion vertical rod;

the upper conversion vertical rod is integrally cuboid, one side of the lower part of the upper conversion vertical rod is protruded cuboid, and the outer edge of the protruded side of the upper conversion vertical rod is provided with a hollow cylindrical upper vertical rod ring with the length of 1/2; the lower conversion vertical rod is integrally cuboid, the upper part of the lower conversion vertical rod is of a protrusion structure which can be correspondingly spliced with the protrusion on the lower part of the upper conversion vertical rod, and the inner edge on the side which does not protrude is provided with a hollow cylindrical lower vertical rod ring with the integral length of 1/2; the lower part of the lower conversion vertical rod is provided with an inner frame fixing through hole;

the conversion stay bar applies a dead point principle;

the connection mode of the semi-automatic conversion scaffold is as follows: the outer frame component is sleeved on the vertical rod of the inner frame component through a fixed sleeve welded on the vertical rod; the lower pedal of the pedal group is assembled and fixed on the upright rod of the inner frame component through the lower pedal fixing hook; the upper pedal of the pedal group is assembled and fixed on the cross rod of the outer frame component through the upper pedal fixing hook; the central conversion rod of the conversion support rod penetrates through the conversion support rod fixing ring on one side of the lower pedal, and the lower conversion vertical rod is hinged with the inner frame conversion buckle of the inner frame assembly through the inner frame fixing through hole; the outer frame of the conversion vertical rod is sleeved with a ring and fixed on the cross rod of the outer frame component;

the inner frame assembly is connected in the following mode: the upright rod is hinged with an inclined support fixing through hole of the inclined support through an inclined support fixing buckle; the inclined support is hinged with an inclined support fixing pin through an inclined support assembling through hole; the pulley block is welded at the bottom of the vertical rod; the vertical ladder is welded in the middle and one side of the vertical rod;

the connecting mode of the fixed sleeve is as follows: the outer frame is sleeved with through holes which are respectively sleeved and welded at the upper middle part and the lower middle part of the vertical rod; the inner frame sleeve through hole is movably sleeved on the vertical rod and is matched and fixed with the inner sleeve fixing buckle of the vertical rod through the inner frame sleeve through hole;

the connection mode of the conversion supporting rod is as follows: the through hole of the central rod of the central conversion rod is respectively hinged with the connecting end of the central rod of the conversion cross rod; the conversion cross rod is connected with the lower conversion vertical rod of the conversion vertical rod in a binding manner through the cross rod through hole; the lower conversion vertical rod is hinged with the upper vertical rod ring of the upper conversion vertical rod through the lower vertical rod ring;

the semi-automatic conversion scaffold uses the principle: when the semi-automatic conversion scaffold needs to be moved, a worker stands on the upper pedal and drives the central conversion rod to move downwards by pressing or treading the pressing table of the conversion support rod; the central conversion rod moves downwards to pull the conversion cross rod; the conversion cross rod pushes the upper conversion vertical rod and the lower conversion vertical rod to the same straight line, so that the outer frame assembly can be lifted off the ground; after the vertical rod of the outer frame assembly leaves the ground, the semi-automatic conversion scaffold is moved to a proper position, the vertical rod is made to contact the ground through the lifting and pulling pressing platform, and therefore the safe use and convenient movement of the semi-automatic conversion scaffold are guaranteed.

The center conversion rod, the conversion cross rod, the upper conversion vertical rod and the lower conversion vertical rod of the conversion support rod form a dead point mechanism.

The conversion horizontal pole can be binded with the conversion montant through rope made of hemp and iron wire in the conversion vaulting pole and be connected.

The whole size of the upper pedal is larger than that of the lower pedal.

The utility model relates to a semi-automatic conversion scaffold, the pulley block at the bottom of the inner frame component can realize the convenient movement of the semi-automatic conversion scaffold; the inclined supports are arranged in a crossed manner, so that the stability and the safety of the semi-automatic conversion scaffold can be improved; the inner frame assembly and the outer frame assembly are simple in structure and easy and convenient to assemble; the conversion support rods are matched with the fixed sleeves, so that the inner frame assembly and the outer frame assembly can be contacted with the ground simultaneously, and the safety of operation workers during working on the semi-automatic conversion scaffold is ensured; the conversion support rod can change the grounding mode through simple operation, realizes independent grounding of the inner frame assembly, facilitates the pushing of the semi-automatic conversion scaffold, saves the time of operating workers working on the semi-automatic conversion scaffold, and improves the working efficiency; the semi-automatic conversion scaffold is simple in structure, convenient to operate, practical, stable, safe, reliable and high in applicability.

Drawings

Fig. 1 is a perspective view of the semi-automatic conversion scaffold of the present invention;

figure 2 is a perspective view of the inner frame assembly of the present invention

Fig. 3 is a perspective view of the vertical rod of the present invention;

fig. 4 is a perspective view of the diagonal brace of the present invention;

fig. 5 is a perspective view of the outer frame assembly of the present invention;

fig. 6 is a perspective view of the fixing sleeve of the present invention;

fig. 7 is a perspective view of the pedal set of the present invention;

fig. 8 is a perspective view of the lower pedal and the upper pedal of the present invention;

fig. 9 is a perspective view of the conversion stay bar of the present invention;

fig. 10 is a perspective view of the central transfer bar, transfer cross bar and transfer vertical bar of the present invention;

fig. 11 is a perspective view of the center switching lever of the present invention;

fig. 12 is a perspective view of the upper and lower switching poles of the present invention;

fig. 13 is a perspective view of the conversion cross bar and the conversion vertical bar of the present invention.

In the drawings, 1, an inner frame assembly; 2. an outer frame assembly; 3. a pedal group; 4. a conversion stay bar;

1-1, erecting a rod; 1-2, obliquely supporting; 1-3, a pulley block; 2-1, a cross bar; 2-2, a vertical rod; 2-3, fixing the sleeve; 3-1, a lower pedal; 3-2, mounting a pedal; 4-1, a central transfer lever; 4-2, switching the cross bar; 4-3, converting vertical rods;

1-1-1, vertical ladder; 1-1-2, inner frame conversion buckle; 1-1-3, an inner sleeve fixing buckle; 1-1-4, obliquely supporting and fixing buckles; 1-2-1, fixing a through hole by an inclined support; 1-2-2, assembling through holes by using inclined supports; 1-2-3, an inclined support fixing pin;

2-3-1, sleeving a through hole on the outer frame; 2-3-2, sleeving a through hole on the inner frame; 2-3-3, inner frame sleeve through holes;

3-1-1, fixing a hook by a lower pedal; 3-1-2, a conversion stay bar fixing ring; 3-2-1, fixing a hook on the upper pedal;

4-1-1, a pressing table; 4-1-2, a central rod through hole; 4-2-1, connecting end of central rod; 4-2-2, through holes of the cross bars; 4-3-1, sleeving a ring on the outer frame; 4-3-2, up-conversion vertical rods; 4-3-3, converting the vertical rod downwards;

4-3-2-1, and an upper vertical rod ring; 4-3-3-1, a lower vertical rod ring; 4-3-3-2 and inner frame fixing through holes.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings, and as shown in fig. 1, a semi-automatic conversion scaffold is characterized by comprising an inner frame component 1, an outer frame component 2, a pedal group 3 and a conversion brace 4;

as shown in fig. 2, the inner frame assembly 1 comprises upright rods 1-1 vertically arranged at two sides, inclined supports 1-2 for fixing the two upright rods 1-1, and pulley blocks 1-3 welded at the bottoms of the upright rods 1-1;

as shown in fig. 2 and 3, one side of the upright 1-1 is of a climbing type vertical ladder 1-1-1 structure; an inner frame conversion buckle 1-1-2 is arranged at the upper position of the middle part of one side of the vertical ladder 1-1-1; inner sleeve fixing buckles 1-1-3 are respectively distributed at the upper position and the lower position of the middle parts of the two sides of the upright rod 1-1, and inclined support fixing buckles 1-1-4 are respectively arranged at the upper part and the lower part; the inner sleeve fixing buckle 1-1-3 is made of flexible materials;

as shown in fig. 2 and 4, the inclined support 1-2 is a hollow cylindrical structure, and two ends of the inclined support are respectively provided with an inclined support fixing through hole 1-2-1; one of the inclined supports 1-2 is provided with an inclined support assembly through hole 1-2-2 in the middle, and the other inclined support fixing pin 1-2-3 in the middle is in a protruding cylindrical shape;

as shown in fig. 2, the pulley blocks 1-3 are known universal wheel structures with self-locking devices;

as shown in fig. 5, the outer frame assembly 2 is formed by welding a cylindrical cross bar 2-1 and two cylindrical vertical bars 2-2 at 90 degrees; the middle upper position and the middle lower position of the vertical rod 2-2 are respectively sleeved with a fixed sleeve 2-3;

as shown in fig. 6, a hollow cylindrical outer frame is sleeved with a through hole 2-3-1 at one side of the fixed sleeve 2-3, a welded hollow rectangular shape is arranged in the middle, and a hollow cylindrical inner frame is sleeved with a through hole 2-3-2 at the other side; the middle part of one side of the inner frame sleeved through hole 2-3-2 is provided with an inner frame sleeve through hole 2-3-3;

as shown in fig. 7, the pedal group 3 includes a lower pedal 3-1 and an upper pedal 3-2;

as shown in FIG. 8, the lower pedal 3-1 is a rectangular structure shaped like a Chinese character 'tian', and a lower pedal fixing hook 3-1-1 is welded on the short side; the long side surface of the lower pedal 3-1, which is close to the upper pedal 3-2, is provided with a conversion stay bar fixing ring 3-1-2; the upper pedal 3-2 is of a rectangular structure shaped like a Chinese character 'tian', and an upper pedal fixing hook 3-2-1 is welded on the short side of the upper pedal 3-2;

as shown in fig. 9, the conversion stay bar 4 comprises a central conversion bar 4-1 at the middle part, a conversion cross bar 4-2 and conversion vertical bars 4-3 at both sides;

as shown in fig. 10 and 11, the top of the central conversion rod 4-1 is a cake-shaped pressing table 4-1-1, the lower part is an inverted U-shaped structure, and the middle part is provided with a central rod through hole 4-1-2;

as shown in fig. 10:

one end of the conversion cross rod 4-2, which is close to the central conversion rod 4-1, is a central rod connecting end 4-2-1; one end of the conversion transverse rod 4-2, which is close to the conversion vertical rod 4-3, is of a V-shaped structure, and a transverse rod through hole 4-2-2 is formed at the tail part;

the top of the conversion vertical rod 4-3 is a hollow circular outer frame sleeved ring 4-3-1, the middle part is an upper conversion vertical rod 4-3-2, and the lower part is a lower conversion vertical rod 4-3-3;

as shown in fig. 10 and 12, the upper conversion vertical rod 4-3-2 is a cuboid, one side of the lower part of the upper conversion vertical rod is a protruding cuboid, and the outer edge of the protruding side of the upper conversion vertical rod is provided with a hollow cylindrical upper vertical rod ring 4-3-2-1 with the length of 1/2; the lower conversion vertical rod 4-3-3 is integrally cuboid, the upper part of the lower conversion vertical rod is of a protrusion structure which can be correspondingly spliced with the protrusion at the lower part of the upper conversion vertical rod 4-3-2, and the inner edge at the side which is not protruded is provided with a hollow cylindrical lower vertical rod ring 4-3-3-1 with the integral length of 1/2; the lower part of the lower conversion vertical rod 4-3-3 is provided with an inner frame fixing through hole 4-3-3-2;

as shown in fig. 9, the conversion stay 4 applies the dead-point principle;

as shown in fig. 1-13:

the connection mode of the semi-automatic conversion scaffold is as follows: the outer frame component 2 is sleeved on the upright rods 1-1 of the inner frame component 1 through fixed sleeves 2-3 welded on the upright rods 2-2; a lower pedal 3-1 of the pedal group 3 is assembled and fixed on an upright rod 1-1 of the inner frame component through a lower pedal fixing hook 3-1-1; an upper pedal 3-2 of the pedal group 3 is assembled and fixed on a cross rod 2-1 of the outer frame component 2 through an upper pedal fixing hook 3-2-1; the central conversion rod 4-1 of the conversion support rod 4 penetrates through the conversion support rod fixing ring 3-1-2 of the lower pedal 3-1, and the lower conversion vertical rod 4-3-3 is hinged with the inner frame conversion buckle 1-1-2 of the inner frame component 1 through the inner frame fixing through hole 4-3-3-2; the outer frame sleeving ring 4-3-1 of the conversion vertical rod 4-3 is sleeved and fixed on the cross rod 2-1 of the outer frame component 2;

the inner frame assembly 1 is connected in the following manner: the upright rod 1-1 is hinged with an inclined support fixing through hole 1-2-1 of the inclined support 1-2 through an inclined support fixing buckle 1-1-4; the inclined support 1-2 is hinged with an inclined support fixing pin 1-2-3 through an inclined support assembling through hole 1-2-2; the pulley block 1-3 is welded at the bottom of the vertical rod 1-1; the vertical ladder 1-1-1 is welded at the middle part and one side of the vertical bar 1-1;

the connecting mode of the fixed sleeve 2-3 is as follows: the outer frame is sleeved with the through hole 2-3-1 and is respectively sleeved and welded at the upper middle part and the lower middle part of the vertical rod 2-2; the inner frame sleeve through hole 2-3-2 is movably sleeved on the vertical rod 1-1 and is matched and fixed with an inner sleeve fixing buckle 1-1-3 of the vertical rod 1-1 through the inner frame sleeve through hole 2-3-3;

the connection mode of the conversion stay bar 4 is as follows: the central rod through hole 4-1-2 of the central conversion rod 4-1 is hinged with the central rod connecting end 4-2-1 of the conversion cross rod 4-2 respectively; the conversion transverse rod 4-2 is bound and connected with a lower conversion vertical rod 4-3-3 of the conversion vertical rod 4-3 through a transverse rod through hole 4-2-2; the lower conversion vertical rod 4-3-3 is hinged with the upper vertical rod ring 4-3-2-1 of the upper conversion vertical rod 4-3-2 through the lower vertical rod ring 4-3-3-1;

the semi-automatic conversion scaffold uses the principle: when the semi-automatic conversion scaffold is used daily, an operator can complete the operation on the pedal group 3, the bottoms of the inner frame component 1 and the outer frame component 2 touch the ground simultaneously, the operator stands on the upper pedal 3-2 when the semi-automatic conversion scaffold needs to be moved, and the central conversion rod 4-1 is driven to move downwards by pressing or treading the pressing table 4-1-1 of the conversion support rod 4; the central conversion rod 4-1 moves downwards to pull the conversion cross rod 4-2; the conversion cross rod 4-2 pushes the upper conversion vertical rod 4-3-2 and the lower conversion vertical rod 4-3-3 to the same straight line, so that the outer frame component 2 can be lifted off the ground; after the vertical rods 2-2 of the outer frame assembly 2 leave the ground, the semi-automatic conversion scaffold is moved to a proper position, and the vertical rods 2-2 are contacted with the ground by lifting and pulling the pressing platform 4-1-1, so that the safe use and convenient movement of the semi-automatic conversion scaffold are ensured.

The center conversion rod 4-1, the conversion cross rod 4-2, the upper conversion vertical rod 4-3-2 and the lower conversion vertical rod 4-3-3 of the conversion support rod 4 form a dead point mechanism.

The conversion cross rod 4-2 and the conversion vertical rod 4-3 in the conversion support rod 4 can be bound and connected through hemp ropes and iron wires.

The overall size of the upper pedal 3-2 is larger than that of the lower pedal 3-1.

The characteristics of this embodiment are: the pulley block at the bottom of the inner frame assembly can solve the problem that a common scaffold is inconvenient to move; the inclined support can improve the stability and the safety of the semi-automatic conversion scaffold; the inner frame assembly and the outer frame assembly are simple and convenient to assemble; the conversion support rod can realize that the inner frame assembly and the outer frame assembly simultaneously touch the ground and the inner frame assembly independently touch the ground, so that an operator can safely work on the semi-automatic conversion scaffold, and meanwhile, the convenient movement is realized, the time of the operator is saved, and the working efficiency is improved; the conversion support rod is simple to operate, safe and reliable; the semi-automatic conversion scaffold is simple in structure, convenient to operate, practical, stable, safe, reliable and high in applicability.

Above-mentioned technical scheme has only embodied the utility model discloses technical scheme's preferred technical scheme, some changes that this technical field's technical personnel probably made to some parts wherein have all embodied the utility model discloses a principle belongs to within the protection scope of the utility model.

Claims (4)

1. A semi-automatic conversion scaffold is characterized by comprising an inner frame assembly (1), an outer frame assembly (2), a pedal group (3) and a conversion stay bar (4);

the inner frame component (1) comprises upright posts (1-1) vertically arranged at two sides, inclined supports (1-2) for fixing the two upright posts (1-1) and pulley blocks (1-3) welded at the bottoms of the upright posts (1-1);

one side of the vertical rod (1-1) is of a climbing type vertical ladder (1-1-1) structure; an inner frame conversion buckle (1-1-2) is arranged at the upper position of the middle part of one side of the vertical ladder (1-1-1); inner sleeve fixing buckles (1-1-3) are respectively distributed at the upper position and the lower position of the middle parts of the two sides of the upright rod (1-1), and inclined support fixing buckles (1-1-4) are respectively arranged at the upper part and the lower part; the inner sleeve fixing buckle (1-1-3) is made of flexible materials;

the inclined support (1-2) is of a hollow cylindrical structure, and inclined support fixing through holes (1-2-1) are formed in two ends of the inclined support; one of the inclined supports (1-2) is provided with an inclined support assembly through hole (1-2-2) in the middle, and the other inclined support fixing pin (1-2-3) protrudes out of the middle; the pulley block (1-3) is a known universal wheel structure with a self-locking device;

the outer frame assembly (2) is formed by welding a cylindrical cross rod (2-1) and two cylindrical vertical rods (2-2) at an angle of 90 degrees respectively; the upper middle position and the lower middle position of the vertical rod (2-2) are respectively sleeved with a fixed sleeve (2-3);

one side of the fixed sleeve (2-3) is a hollow cylindrical outer frame sleeved with a through hole (2-3-1), the middle part of the fixed sleeve is in a welded hollow rectangular shape, and the other side of the fixed sleeve is a hollow cylindrical inner frame sleeved with a through hole (2-3-2); an inner frame sleeve through hole (2-3-3) is formed in the middle of one side of the inner frame sleeve through hole (2-3-2);

the pedal group (3) comprises a lower pedal (3-1) and an upper pedal (3-2);

the lower pedal (3-1) is of a rectangular structure shaped like Chinese character 'tian', and a lower pedal fixing hook (3-1-1) is welded on the short side of the lower pedal; the long side surface of one side of the lower pedal (3-1) close to the upper pedal (3-2) is provided with a conversion stay bar fixing ring (3-1-2); the upper pedal (3-2) is of a rectangular structure shaped like Chinese character 'tian', and an upper pedal fixing hook (3-2-1) is welded on the short side;

the conversion support rod (4) comprises a central conversion rod (4-1) in the middle, a conversion cross rod (4-2) and conversion vertical rods (4-3) on two sides;

the top of the central conversion rod (4-1) is a cake-shaped pressing platform (4-1-1), the lower part of the central conversion rod is of an inverted U-shaped structure, and the middle part of the central conversion rod is provided with a central rod through hole (4-1-2);

one end of the conversion cross bar (4-2) close to the central conversion bar (4-1) is a central bar connecting end (4-2-1); one end of the conversion transverse rod (4-2) close to the conversion vertical rod (4-3) is of a V-shaped structure, and a transverse rod through hole (4-2-2) is formed at the tail of the conversion transverse rod;

the top of the conversion vertical rod (4-3) is a hollow circular ring-shaped outer frame sleeve ring (4-3-1), the middle part is an upper conversion vertical rod (4-3-2), and the lower part is a lower conversion vertical rod (4-3-3);

the upper conversion vertical rod (4-3-2) is integrally cuboid, one side of the lower part of the upper conversion vertical rod is protruded cuboid, and the outer edge of the protruded side is provided with a hollow cylindrical upper vertical rod ring (4-3-2-1) with the length of 1/2; the lower conversion vertical rod (4-3-3) is integrally cuboid, the upper part of the lower conversion vertical rod is of a protruding structure which can be correspondingly spliced with the protrusion at the lower part of the upper conversion vertical rod (4-3-2), and the inner edge at the side which is not protruded is provided with a hollow cylindrical lower vertical rod ring (4-3-3-1) with the integral length of 1/2; the lower part of the lower conversion vertical rod (4-3-3) is provided with an inner frame fixing through hole (4-3-3-2);

the conversion stay bar (4) applies a dead point principle;

the connection mode of the semi-automatic conversion scaffold is as follows: the outer frame component (2) is sleeved on the vertical rod (1-1) of the inner frame component (1) through a fixed sleeve (2-3) welded on the vertical rod (2-2); a lower pedal (3-1) of the pedal group (3) is assembled and fixed on the upright rod (1-1) of the inner frame component through a lower pedal fixing hook (3-1-1); an upper pedal (3-2) of the pedal group (3) is assembled and fixed on a cross rod (2-1) of the outer frame component (2) through an upper pedal fixing hook (3-2-1); a central conversion rod (4-1) of the conversion support rod (4) penetrates through a conversion support rod fixing ring (3-1-2) on one side of the lower pedal (3-1), and a lower conversion vertical rod (4-3-3) is hinged with an inner frame conversion buckle (1-1-2) of the inner frame component (1) through an inner frame fixing through hole (4-3-3-2); the outer frame sleeving ring (4-3-1) of the conversion vertical rod (4-3) is sleeved and fixed on the cross rod (2-1) of the outer frame component (2);

the inner frame assembly (1) is connected in the following mode: the upright rod (1-1) is hinged with an inclined support fixing through hole (1-2-1) of the inclined support (1-2) through an inclined support fixing buckle (1-1-4); the inclined support (1-2) is hinged with an inclined support fixing pin (1-2-3) through an inclined support assembling through hole (1-2-2); the pulley block (1-3) is welded at the bottom of the upright stanchion (1-1); the vertical ladder (1-1-1) is welded at the middle part and one side of the vertical bar (1-1);

the connecting mode of the fixed sleeve (2-3) is as follows: the outer frame is sleeved with the through hole (2-3-1) and welded at the upper middle part and the lower middle part of the vertical rod (2-2) respectively; the inner frame sleeve through hole (2-3-2) is movably sleeved on the vertical rod (1-1) and is matched and fixed with an inner sleeve fixing buckle (1-1-3) of the vertical rod (1-1) through the inner frame sleeve through hole (2-3-3);

the connection mode of the conversion stay bar (4) is as follows: a central rod through hole (4-1-2) of the central conversion rod (4-1) is hinged with a central rod connecting end (4-2-1) of the conversion cross rod (4-2) respectively; the conversion transverse rod (4-2) is bound and connected with a lower conversion vertical rod (4-3-3) of the conversion vertical rod (4-3) through a transverse rod through hole (4-2-2); the lower conversion vertical rod (4-3-3) is hinged with an upper vertical rod ring (4-3-2-1) of the upper conversion vertical rod (4-3-2) through a lower vertical rod ring (4-3-3-1);

the semi-automatic conversion scaffold uses the principle: when the semi-automatic conversion scaffold is required to be moved, a worker stands on the upper pedal (3-2) and drives the central conversion rod (4-1) to move downwards by pressing or treading the pressing table (4-1-1) of the conversion support rod (4); the central conversion rod (4-1) moves downwards to pull the conversion cross rod (4-2); the conversion cross rod (4-2) pushes the upper conversion vertical rod (4-3-2) and the lower conversion vertical rod (4-3-3) to the same straight line, so that the outer frame component (2) can be lifted off the ground; after the vertical rod (2-2) of the outer frame component (2) leaves the ground, the semi-automatic conversion scaffold is moved to a proper position, and the vertical rod (2-2) is contacted with the ground by lifting the pressing platform (4-1-1), so that the safe use and convenient movement of the semi-automatic conversion scaffold are ensured.

2. Semi-automatic conversion scaffold according to claim 1, characterized in that: the center conversion rod (4-1), the conversion cross rod (4-2), the upper conversion vertical rod (4-3-2) and the lower conversion vertical rod (4-3-3) of the conversion support rod (4) form a dead point mechanism.

3. Semi-automatic conversion scaffold according to claim 1, characterized in that: the conversion cross rod (4-2) and the conversion vertical rod (4-3) in the conversion support rod (4) can be bound and connected through hemp ropes and iron wires.

4. Semi-automatic conversion scaffold according to claim 1, characterized in that: the overall size of the upper pedal (3-2) is larger than that of the lower pedal (3-1).

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