A mobile scaffolding for building construction

Abstract

The present invention relates to the technical field of scaffolding, and particularly to a mobile scaffolding for building construction, which includes a support frame, a working platform, connecting members, and a roller mechanism. The working platform is arranged on the upper part of the support frame, and there are four connecting members, which are arranged at the four corners of the lower part of the support frame. The present invention is provided with a support shaft, a wheel body, and a switching assembly. When moving the mobile scaffolding for building construction, the outer peripheral surface of the wheel body is in rolling contact with the ground, which helps to reduce the moving resistance. After the mobile scaffolding for building construction reaches the target position, the staff can then switch the wheel body to a form in which the outer side surface of the wheel body is in surface contact with the ground through the switching assembly. Since the contact area between the outer side surface of the wheel body and the ground is much larger than the contact area between the outer peripheral surface of the wheel body and the ground at this time, the pressure exerted on the ground by the wheel body will be significantly reduced, thereby avoiding the wheel body from sinking into the ground under the long-term pressure effect.

Description

Technical Field

[0001] The present invention relates to the technical field of scaffolding, and particularly to a mobile scaffolding for building construction. Background Art

[0002] A mobile scaffolding for building construction is a device that provides a temporary working platform for construction workers. It can be moved conveniently at the construction site to meet the working requirements at different positions. The main structure of the mobile scaffolding includes a frame unit, a working platform, connecting pieces, and wheels. Among them, the working platform is fixed on the horizontal structure of the frame unit for workers to stand and place tools, materials, etc. The connecting pieces are installed at the lower part of the frame unit, and four wheels are installed at the bottom of the connecting pieces so that the entire scaffolding can be moved and locked when needed.

[0003] Since the contact area between the rolling surfaces of the four wheels and the ground is very small, and the weight of the entire scaffolding is completely borne by the four wheels, the pressure on the four wheels is very large, and the wheels are extremely prone to sink into the ground under long-term pressure. Summary of the Invention

[0004] Based on this, it is necessary to provide a mobile scaffolding for building construction to solve the problem that the wheels are extremely prone to sink into the ground under long-term pressure in view of the problems existing in the current mobile scaffolding.

[0005] The above object is achieved by the following technical solutions:

[0006] A mobile scaffolding for building construction includes:

[0007] A support frame;

[0008] A working platform, arranged on the upper part of the support frame;

[0009] Connecting pieces, there are four connecting pieces, and the four connecting pieces are arranged at the four corners of the lower part of the support frame;

[0010] Rolling wheel mechanisms, there are four rolling wheel mechanisms, and the four rolling wheel mechanisms correspond to the four connecting pieces one by one. The rolling wheel mechanism includes a support shaft, a wheel body, and a switching component;

[0011] The support shaft is arranged at the lower part of the connecting piece;

[0012] The wheel body is rotationally engaged with one end of the support shaft away from the connecting member. The wheel body has a first contact form and a second contact form with the ground. When the wheel body is in the first contact form with the ground, the outer peripheral surface of the wheel body is in rolling contact with the ground, and the axis of the wheel body coincides with the axis of the support shaft. When the wheel body is in the second contact form with the ground, the outer side surface of the wheel body is in surface contact with the ground, and the axis of the wheel body is perpendicular to the axis of the support shaft;

[0013] The switching component is used to switch the contact form between the wheel body and the ground. The switching component is arranged inside the wheel body and is connected between the support shaft and the wheel body.

[0014] Preferably, the switching component includes a hemispherical body. The hemispherical body is coaxially and fixedly connected to one end of the support shaft, and the hemispherical body is rotatably arranged inside the wheel body. A rotating ring is coaxially and rotatably arranged inside the wheel body. There is a preset distance between the rotating ring and the hemispherical body. An elastic member is arranged within the preset distance, and both ends of the elastic member are respectively connected to the rotating ring and the hemispherical body. The elastic member is used to make the rotating ring and the hemispherical body move away from each other;

[0015] An avoidance groove is formed on one circumferential side of the wheel body. The avoidance groove communicates with the inside of the wheel body, and the width of the avoidance groove is adapted to the diameter of the support shaft.

[0016] Preferably, a first annular plane is provided at one end of the hemispherical body coaxially and fixedly connected to the support shaft, and a second annular plane is formed inside the wheel body;

[0017] When the circumferential surface of the wheel body is in rolling contact with the ground, the first annular plane and the second annular plane are mutually attached.

[0018] Preferably, a first annular plane is provided at one end of the hemispherical body coaxially and fixedly connected to the support shaft, and a second annular plane is formed inside the wheel body. A plurality of balls are equidistantly arranged circumferentially on the second annular plane;

[0019] When the circumferential surface of the wheel body is in rolling contact with the ground, the first annular plane is in rotational abutment with the balls.

[0020] Preferably, a guiding block is arranged on the end face of the elastic member facing the hemispherical body, and a guiding arc groove adapted to the guiding block is formed on the spherical surface of the hemispherical body;

[0021] When the guiding block slides from the upper end of the guiding arc groove to the lower end of the guiding arc groove, the wheel body switches from the form of its outer peripheral surface being in rolling contact with the ground to the form of its outer side surface being in surface contact with the ground.

[0022] Preferably, a first spherical arc groove is formed inside the wheel body, and the axis of the first spherical arc groove coincides with the axis of the wheel body.

[0023] Preferably, a second spherical arc groove is formed inside the wheel body and on the circumferential side close to the avoidance groove, and the axis of the second spherical arc groove is biased toward the side where the avoidance groove is located;

[0024] An inclined protrusion is provided at the connection position between the first spherical arc groove and the second spherical arc groove. The inclined protrusion is used to gradually increase the resistance received by the hemispherical body when the hemispherical body moves from the first spherical arc groove into the second spherical arc groove.

[0025] Preferably, support rods are detachably arranged at the four corners of the support frame.

[0026] Preferably, a guardrail is arranged outside the support frame and around the working platform.

[0027] Preferably, reinforcing rib plates are arranged inside the support frame.

[0028] The beneficial effects of the present invention are as follows:

[0029] The present invention is provided with a support shaft, a wheel body and a switching component. When moving the mobile scaffolding for building construction, the outer peripheral surface of the wheel body is in rolling contact with the ground, which helps to reduce the moving resistance and conveniently move the mobile scaffolding for building construction to the target position. After the mobile scaffolding for building construction reaches the target position, the staff can then switch the wheel body to a form in which the outer side surface of the wheel body is in surface contact with the ground through the switching component. Since the contact area between the outer side surface of the wheel body and the ground is much larger than the contact area between the outer peripheral surface of the wheel body and the ground at this time, the pressure exerted on the ground by the wheel body will be significantly reduced, thereby preventing the wheel body from sinking into the ground under the long-term pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is an overall schematic diagram of a mobile scaffolding for building construction according to the present invention;

[0031] Figure 2 is a side view of a mobile scaffolding for building construction according to the present invention;

[0032] Figure 3 is Figure 2 the A-A cross-sectional view in

[0033] Figure 4 is Figure 3 a schematic enlarged view of the structure at B in

[0034] Figure 5Schematic diagram of the support state of the roller mechanism in a mobile scaffolding for building construction according to the present invention;

[0035] Figure 6 Schematic diagram of the moving state of the roller mechanism in a mobile scaffolding for building construction according to the present invention;

[0036] Figure 7 Exploded view of the roller mechanism in a mobile scaffolding for building construction according to the present invention;

[0037] Figure 8 is Figure 7 top view of;

[0038] Figure 9 is Figure 8 C-C cross-sectional view in;

[0039] Figure 10 is Figure 9 schematic diagram of the enlarged structure at D in;

[0040] Wherein:

[0041] 100, support frame; 110, support rod; 120, guardrail; 130, reinforcing rib plate;

[0042] 200, working platform;

[0043] 300, connecting piece;

[0044] 400, roller mechanism; 410, support shaft; 420, wheel body; 421, avoidance groove; 422, second annular plane; 423, ball; 424, first spherical arc groove; 425, second spherical arc groove; 426, inclined protrusion; 430, switching component;

[0045] 431, hemisphere; 4311, first annular plane; 4312, guiding arc groove; 432, rotating ring; 433, elastic member; 434, guiding block. Detailed implementation manners

[0046] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] The serial numbers assigned to the components in this text itself, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, both include direct and indirect connection (coupling). In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the present invention.

[0048] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0049] As Figures 1 to 10 shown, a mobile scaffolding for building construction includes a support frame 100, a working platform 200, a connecting member 300, and a roller mechanism 400. The working platform 200 is disposed at the upper part of the support frame 100. There are four connecting members 300, and the four connecting members 300 are disposed at the four corners of the lower part of the support frame 100. There are four roller mechanisms 400, and the four roller mechanisms 400 correspond to the four connecting members 300 one by one. The roller mechanism 400 includes a support shaft 410, a wheel body 420, and a switching assembly 430. The support shaft 410 is disposed at the lower part of the connecting member 300. The wheel body 420 is rotationally engaged with one end of the support shaft 410 away from the connecting member 300. The wheel body 420 has a first contact form and a second contact form with the ground. When the wheel body 420 is in the first contact form with the ground, the outer peripheral surface of the wheel body 420 is in rolling contact with the ground, and the axis of the wheel body 420 coincides with the axis of the support shaft 410. When the wheel body 420 is in the second contact form with the ground, the outer side surface of the wheel body 420 is in surface contact with the ground, and the axis of the wheel body 420 is perpendicular to the axis of the support shaft 410. The switching assembly 430 is used to switch the contact form between the wheel body 420 and the ground. The switching assembly 430 is disposed inside the wheel body 420, and the switching assembly 430 is connected between the support shaft 410 and the wheel body 420.

[0050] When moving the mobile scaffolding for building construction, the staff first switch the contact form between the wheel body 420 and the ground to the first contact form through the switching component 430. At this time, the circumferential surface of the wheel body 420 is in rolling contact with the ground. Next, the staff push the mobile scaffolding for building construction by hand. After the mobile scaffolding for building construction moves to the target position, the staff then switch the contact form between the wheel body 420 and the ground to the second contact form through the switching component 430. At this time, the outer side surface of the wheel body 420 is in surface contact with the ground. Since the contact area between the outer side surface of the wheel body 420 and the ground is much larger than the contact area between the outer circumferential surface of the wheel body 420 and the ground at this time, the pressure exerted on the ground by the wheel body 420 will be significantly reduced, thus preventing the wheel body 420 from sinking into the ground under long-term pressure. After the mobile scaffolding for building construction is used up at the target position, the staff make the contact form between the wheel body 420 and the ground switch to the first contact form through the switching component 430, and then the support frame 100 can push the mobile scaffolding for building construction to the next target position, which will not be elaborated here.

[0051] In this embodiment, as Figure 4 and Figure 5 shown, the switching component 430 includes a hemispherical body 431. The hemispherical body 431 is coaxially and fixedly connected to one end of the support shaft 410, and the hemispherical body 431 is rotatably arranged inside the wheel body 420. A rotating ring 432 is coaxially and rotatably arranged inside the wheel body 420. There is a preset distance between the rotating ring 432 and the hemispherical body 431. An elastic member 433 is arranged within the preset distance. The two ends of the elastic member 433 are respectively connected to the rotating ring 432 and the hemispherical body 431. The elastic member 433 is used to make the rotating ring 432 and the hemispherical body 431 move away from each other. An avoidance groove 421 is formed on one circumferential side of the wheel body 420. The avoidance groove 421 communicates with the inside of the wheel body 420, and the width of the avoidance groove 421 is adapted to the diameter of the support shaft 410.

[0052] When the contact form of the wheel body 420 with the ground is the first contact form, the axes of the support shaft 410, the wheel body 420, the hemisphere 431 and the rotating ring 432 coincide, and the support shaft 410 and the wheel body 420 rotate in coordination. Therefore, when the staff pushes the mobile scaffold for construction by hand, the wheel body 420 rotates around the axis of the support shaft 410 and moves to the target position. After the wheel body 420 moves to the target position, if the opening of the avoidance groove 421 is not facing downward, the staff uses the foot to move the wheel body 420 to rotate the wheel body 420 so that the avoidance groove 421 is facing downward. Next, the staff lightly kicks the lower part of the wheel body 420 with the foot. Since there is a preset distance between the rotating ring 432 and the hemisphere 431, as the wheel body 420 gradually swings downward, the wheel body 420 moves toward the center of the support shaft 410 relative to the support shaft 410, so that the wheel body 4 A sufficient rotation gap is left between 20 and the support shaft 410, so that the support shaft 410 gradually rotates into the avoidance groove 421. At the same time, since the wheel body 420 moves toward the center of the support shaft 410 relative to the support shaft 410, the elastic member 433 is gradually compressed. When the support shaft 410 rotates to the inside of the avoidance groove 421, the elastic member 433 is in the maximum compressed state. At this time, since the elastic member 433 is in the maximum compressed state, after the staff stands on the work platform 200, the work platform 200 as a whole is not easy to shake and has better stability. After the staff stands on the work platform 200, the support shaft 410 is subjected to an increased downward force, the elastic member 433 will be further compressed, and the overall stability of the work platform 200 will be further improved to ensure the safety of the staff standing on the work platform 200 when working.

[0053] It should also be noted that the elastic member 433 is provided between the rotating ring 432 and the hemispherical body 431 to limit the axial sliding of the wheel body 420 relative to the support shaft 410 when the wheel body 420 is in the first contact form, so as to ensure the stability of the mobile scaffolding for construction during movement.

[0054] It should be added that, in order to increase the support stability between the support shaft 410 and the wheel body 420 when the wheel body 420 is in the second contact form, specifically, an arc groove matching the diameter of the support shaft 410 is opened on the inner side of the wheel body 420. When the wheel body 420 is in the second contact form, after the worker stands on the working platform 200, the pressure on the support shaft 410 increases, so that the support shaft 410 sinks into the arc groove. At this time, even if the support shaft 410 is subjected to a lateral force from the supporting frame 100 or the working platform 200, under the action of the arc groove, the support shaft 410 will not have a large displacement relative to the wheel body 420, thereby improving the safety of the workers during construction.

[0055] In this embodiment, one end of the hemispherical body 431 fixedly connected to the support shaft 410 coaxially is provided with a first annular plane 4311, and a second annular plane 422 is formed inside the wheel body 420. When the circumferential surface of the wheel body 420 comes into rolling contact with the ground, the first annular plane 4311 and the second annular plane 422 are mutually attached.

[0056] When the outer circumferential surface of the wheel body 420 comes into rolling contact with the ground, under the action of the elastic member 433, the hemispherical body 431 and the rotating ring 432 move away from each other, so that the first annular plane 4311 and the second annular plane 422 are mutually attached. At this time, through the limiting action of the first annular plane 4311 and the second annular plane 422, the wheel body 420 can maintain stable circumferential rolling without axially sliding relative to the support shaft 410 during the circumferential rolling process.

[0057] In this embodiment, as Figure 4 shown, one end of the hemispherical body 431 fixedly connected to the support shaft 410 coaxially is provided with a first annular plane 4311, and a second annular plane 422 is formed inside the wheel body 420. A plurality of balls 423 are equidistantly arranged in the circumferential direction of the second annular plane 422. When the circumferential surface of the wheel body 420 comes into rolling contact with the ground, the first annular plane 4311 rotates and abuts against the balls 423.

[0058] When the outer circumferential surface of the wheel body 420 comes into rolling contact with the ground, under the action of the elastic member 433, the hemispherical body 431 and the rotating ring 432 move away from each other, so that the balls 423 rotate and abut against the first annular plane 4311. At this time, it is not necessary to make the first annular plane 4311 and the second annular plane 422 mutually attached. Through the rotating abutment of the balls 423 and the first annular plane 4311, the wheel body 420 can be limited, so that the wheel body 420 can maintain stable circumferential rolling without axially sliding relative to the support shaft 410 during the circumferential rolling process.

[0059] In this embodiment, as Figure 4 、 Figure 5 and Figure 10 shown, one end face of the elastic member 433 facing the hemispherical body 431 is provided with a guide block 434, and a guide arc groove 4312 adapted to the guide block 434 is formed on the spherical surface of the hemispherical body 431. When the guide block 434 slides from the upper end of the guide arc groove 4312 to the lower end of the guide arc groove 4312, the wheel body 420 switches from the state where its circumferential surface comes into rolling contact with the ground to the form where its outer side surface is in surface contact with the ground.

[0060] When it is necessary to switch the wheel body 420 from the state where its outer peripheral surface is in rolling contact with the ground to the form where its outer side surface is in surface contact with the ground, the staff gently kicks the lower part of the wheel body 420 with their foot. At this time, the guiding block 434 slides downward along the guiding arc groove 4312, and the wheel body 420 switches from the state where its outer peripheral surface is in rolling contact with the ground to the form where its outer side surface is in surface contact with the ground. Conversely, when it is necessary to switch the wheel body 420 from the form where its outer side surface is in surface contact with the ground to the form where its outer peripheral surface is in rolling contact with the ground, the staff uses their hand to dial the wheel body 420 upward, so that the hemispherical body 431 slides upward along the guiding arc groove 4312 from bottom to top, so that the wheel body 420 rotates until its axis coincides with the axis of the support shaft 410.

[0061] In this embodiment, as Figure 10 shown, a first spherical arc groove 424 is formed inside the wheel body 420, and the axis of the first spherical arc groove 424 coincides with the axis of the wheel body 420.

[0062] The first spherical arc groove 424 is provided to guide and limit the rotation of the hemispherical body 431 when the outer peripheral surface of the wheel body 420 is in rolling contact with the ground, so as to further enhance the stability of the circumferential rotation of the wheel body 420.

[0063] In this embodiment, as Figure 10 shown, a second spherical arc groove 425 is formed inside the wheel body 420 and on the circumferential side close to the avoidance groove 421. The axis of the second spherical arc groove 425 is biased toward the side where the avoidance groove 421 is located. An inclined protrusion 426 is provided at the communication position of the first spherical arc groove 424 and the second spherical arc groove 425. The inclined protrusion 426 is used to make the resistance received by the hemispherical body 431 gradually increase when the hemispherical body 431 moves from the first spherical arc groove 424 into the second spherical arc groove 425.

[0064] In the state where the outer peripheral surface of the wheel body 420 is in rolling contact with the ground, if the mobile scaffolding for building construction is subjected to a large instantaneous acceleration, such as inertial collision, the wheel body 420 is forced to rotate circumferentially. When the wheel body 420 rotates until the avoidance groove 421 faces downward, at this time, under the action of inertial force, the hemispherical body 431 overcomes the resistance of the inclined protrusion 426 and moves until the outer spherical surface of the hemispherical body 431 is in surface contact with the second spherical arc groove 425. At this time, the axis of the hemispherical body 431 no longer coincides with the axis of the wheel body 420, and there is a gap between the hemispherical body 431 and the upper wall surface inside the wheel body 420. Therefore, when the wheel body 420 continues to rotate, the wheel body 420 will rotate to the "inward eight" state, so that the wheel body 420 can be quickly braked, preventing safety accidents due to excessive accidental movement distance of the mobile scaffolding for building construction.

[0065] It can be understood that when the staff pushes the mobile scaffolding for building construction to move at a uniform speed, the wheel body 420 rotates circumferentially under force. When the wheel body 420 rotates until the avoidance groove 421 faces downward, at this time, the gravity of the support frame 100, the working platform 200, and the connecting member 300 is insufficient to overcome the resistance of the inclined protrusion 426. Therefore, the outer spherical surface of the hemispherical body 431 still rotates in cooperation with the first spherical arc groove 424 and cannot overcome the resistance of the inclined protrusion 426 to move from the first spherical arc groove 424 into the second spherical arc groove 425.

[0066] In this embodiment, as Figure 2 shown, support rods 110 are detachably arranged at the four corners of the support frame 100.

[0067] The support rods 110 are provided to increase the stability of the mobile scaffolding for building construction.

[0068] In this embodiment, as Figure 2 shown, guardrails 120 are arranged outside the support frame 100 and around the working platform 200.

[0069] The guardrails 120 are provided to improve the safety of the staff when working on the working platform 200.

[0070] In this embodiment, as Figure 2 shown, reinforcing rib plates 130 are arranged inside the support frame 100.

[0071] The reinforcing rib plates 130 are provided to enhance the support strength of the support frame 100.

[0072] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0073] The above-described embodiments only represent several implementation manners of the present invention. Their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A mobile scaffold for construction, characterized in that: include: Support frame; A working platform, arranged on the upper part of the supporting frame; Connecting parts, there are four connecting parts, and the four connecting parts are arranged at the four corners of the lower part of the supporting frame; Roller mechanisms, there are four of the roller mechanisms, the four roller mechanisms correspond to the four connecting members one by one, and the roller mechanisms include a support shaft, a wheel body and a switching assembly; The support shaft is arranged at the lower part of the connecting member; The wheel body is rotatably matched with an end of the support shaft away from the connecting member, and the wheel body has a first contact form and a second contact form with the ground. When the wheel body is in the first contact form with the ground, the outer peripheral surface of the wheel body is in rolling contact with the ground, and the axis of the wheel body and the support shaft coincide with each other. When the wheel body is in the second contact form with the ground, the outer side surface of the wheel body is in surface contact with the ground, and the axis of the wheel body and the axis of the support shaft are perpendicular to each other. The switching component is used to switch the contact form between the wheel body and the ground. The switching component is arranged in the wheel body and is connected between the support shaft and the wheel body; the switching component includes a hemisphere, the hemisphere is coaxially fixed with one end of the support shaft, and the hemisphere is rotatably arranged in the wheel body, a rotating ring is coaxially rotatably arranged in the wheel body, a preset distance is provided between the rotating ring and the hemisphere, an elastic member is arranged in the preset distance, two ends of the elastic member are respectively connected to the rotating ring and the hemisphere, the elastic member is used to make the rotating ring and the hemisphere keep away from each other, an avoidance groove is opened on one circumferential side of the wheel body, the avoidance groove is connected with the inside of the wheel body, and the width of the avoidance groove is adapted to the diameter of the support shaft.

2. A mobile scaffold for construction according to claim 1, characterized in that: One end of the hemispherical body coaxially fixed to the support shaft is provided with a first annular plane, and a second annular plane is provided inside the wheel body; When the circumferential surface of the wheel body is in rolling contact with the ground, the first annular plane and the second annular plane are in contact with each other.

3. A mobile scaffold for construction according to claim 1, characterized in that: One end of the hemispherical body coaxially fixed to the support shaft is provided with a first annular plane, a second annular plane is provided inside the wheel body, and a plurality of balls are provided at equal intervals in the circumferential direction of the second annular plane; When the circumferential surface of the wheel body is in rolling contact with the ground, the first annular plane is in rotational contact with the ball.

4. A mobile scaffold for construction according to claim 3, characterized in that: The elastic member is provided with a guide block on one end surface facing the hemisphere, and a guide arc groove matching the guide block is provided on the spherical surface of the hemisphere; When the guide block slides from the upper end of the guide arc groove to the lower end of the guide arc groove, the wheel body switches from a form in which its outer peripheral surface is in rolling contact with the ground to a form in which its outer side surface is in surface contact with the ground.

5. A mobile scaffold for construction according to claim 4, characterized in that: A first spherical arc groove is provided inside the wheel body, and the axis of the first spherical arc groove coincides with the axis of the wheel body.

6. A mobile scaffold for construction according to claim 5, characterized in that: A second spherical arc groove is provided inside the wheel body and on one circumferential side close to the avoidance groove, and the axis of the second spherical arc groove is biased toward the side where the avoidance groove is located; An inclined protrusion is provided at the connecting position between the first spherical arc groove and the second spherical arc groove, and the inclined protrusion is used to gradually increase the resistance encountered by the hemisphere when the hemisphere moves from the first spherical arc groove to the second spherical arc groove.

7. A mobile scaffold for construction according to claim 1, characterized in that: The four corners of the support frame are detachably provided with support rods.

8. The mobile scaffold for construction according to claim 1, characterized in that: Guardrails are arranged outside the support frame and around the working platform.

9. A mobile scaffold for construction according to claim 1, characterized in that: A reinforcing rib is arranged inside the support frame.

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