Movable scaffold for building construction

Abstract

The invention relates to the technical field of scaffolds, in particular to a movable scaffold for building construction, which comprises a support frame, a working platform, four connecting pieces and a roller mechanism, the support frame is arranged at the upper part of the support frame, and the four connecting pieces are arranged at four corners of the lower part of the support frame. According to the movable scaffold for building construction, the supporting shafts, the wheel bodies and the switching assemblies are arranged, when the movable scaffold for building construction is moved, the peripheral surfaces of the wheel bodies make rolling contact with the ground, and therefore the movement resistance can be reduced, and after the movable scaffold for building construction reaches the target position, the movement is facilitated; a worker switches the wheel body to the form that the outer side face of the wheel body is in surface contact with the ground through the switching assembly, and the contact area between the outer side face of the wheel body and the ground is far larger than the contact area between the peripheral face of the wheel body and the ground at the moment, so that the intensity of pressure borne by the ground from the wheel body can be remarkably reduced; and therefore, the wheel body is prevented from sinking into the ground under the long-time pressure effect.

Description

Technical Field

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

[0002] Mobile scaffolding for construction is a kind of equipment that provides a temporary working platform for construction workers. It can be easily moved around the construction site to meet the work needs of different locations. The main structure of the mobile scaffolding consists of a frame unit, a working platform, connectors and wheels. The working platform is fixed on the horizontal structure of the frame unit for workers to stand and place tools and materials. The connector is installed at the bottom of the frame unit, and four wheels are installed at the bottom of the connector so that the entire scaffolding can be moved and locked when needed.

[0003] Since the contact area between the rolling surface of the four wheels and the ground is very small, and the weight of the entire scaffolding is completely pressed on the four wheels, the four wheels are subjected to a large pressure, and the wheels are easily sunk into the ground under long-term pressure. Summary of the invention

[0004] Based on this, it is necessary to provide a mobile scaffold for construction to solve the problem that the wheels are easily sunk into the ground under long-term pressure.

[0005] The above purpose is achieved through the following technical solutions: A mobile scaffold for building construction comprises: 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 the switching component is connected between the support shaft and the wheel body.

[0006] Preferably, the switching assembly includes a hemisphere, the hemisphere is coaxially fixed to 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 provided in the preset distance, two ends of the elastic member are respectively connected to the rotating ring and the hemisphere, and the elastic member is used to make the rotating ring and the hemisphere move away from each other; A circumferential side of the wheel body is provided with an escape groove, the escape groove is communicated with the interior of the wheel body, and the width of the escape groove is adapted to the diameter of the support shaft.

[0007] Preferably, 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.

[0008] Preferably, 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.

[0009] Preferably, 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.

[0010] Preferably, a first spherical arc groove is opened inside the wheel body, and the axis of the first spherical arc groove coincides with the axis of the wheel body.

[0011] Preferably, 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.

[0012] Preferably, support rods are detachably provided at the four corners of the support frame.

[0013] Preferably, guardrails are provided outside the support frame and around the working platform.

[0014] Preferably, reinforcing ribs are provided inside the support frame.

[0015] The beneficial effects of the present invention are: The present invention is provided with a support shaft, a wheel body and a switching assembly. When the mobile scaffold for construction is moved, the outer peripheral surface of the wheel body is in rolling contact with the ground, which helps to reduce the movement resistance and conveniently move the mobile scaffold for construction to the target position. After the mobile scaffold for construction reaches the target position, the staff switches the wheel body through the switching assembly until the outer side surface of the wheel body is in surface contact with the ground. 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 on the ground from the wheel body will be significantly reduced, thereby preventing the wheel body from sinking into the ground under long-term pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an overall schematic diagram of a mobile scaffold for building construction according to the present invention; Figure 2 A side view of a mobile scaffold for building construction according to the present invention; Figure 3 for Figure 2 Middle AA section view; Figure 4 for Figure 3 Schematic diagram of the enlarged structure at B in the middle; Figure 5 It is a schematic diagram of the supporting state of a roller mechanism in a mobile scaffold for building construction according to the present invention; Figure 6 It is a schematic diagram of the moving state of a roller mechanism in a mobile scaffold for building construction according to the present invention; Figure 7 This is an exploded view of a roller mechanism in a mobile scaffold for building construction according to the present invention; Figure 8 for Figure 7 A top view of Fig. 9 for Figure 8 Middle CC section view; Fig.10 for Fig. 9 Schematic diagram of the enlarged structure at D in the middle.

[0017] in: 100, support frame; 110, support rod; 120, guardrail; 130, reinforcement rib; 200. Working platform; 300, connector; 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 assembly; 431, hemisphere; 4311, first annular plane; 4312, guide arc groove; 432, rotating ring; 433, elastic member; 434, guide block. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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.

[0019] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which 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 understood as a limitation to the present invention.

[0020] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean 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, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0021] like Figures 1 to 10As shown, a mobile scaffold for construction includes a support frame 100, a working platform 200, a connecting member 300 and a roller mechanism 400. The support frame 100 is arranged at the upper part of the support frame 100. There are four connecting members 300, and the four connecting members 300 are arranged 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 arranged at the lower part of the connecting member 300, and the wheel body 420 is rotatably matched with the 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 and the axis of the support shaft 410 coincide with each other. 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 and the axis of the support shaft 410 are perpendicular to each other. The switching component 430 is used to switch the contact form of the wheel body 420 with the ground. The switching component 430 is arranged in the wheel body 420, and the switching component 430 is connected between the support shaft 410 and the wheel body 420.

[0022] When moving the mobile scaffold for construction, the staff first switches the contact form between the wheel body 420 and the ground to the first contact form through the switching assembly 430. At this time, the peripheral surface of the wheel body 420 is in rolling contact with the ground. Next, the staff pushes the mobile scaffold for construction by hand. After the mobile scaffold for construction moves to the target position, the staff switches the contact form between the wheel body 420 and the ground to the second contact form through the switching assembly 430. At this time, the outer side surface of the wheel body 420 is in surface contact with the ground. The contact area between the outer side surface and the ground is much larger than the contact area between the outer peripheral surface of the wheel body 420 and the ground. Therefore, the pressure on the ground from the wheel body 420 will be significantly reduced, thereby preventing the wheel body 420 from sinking into the ground under long-term pressure. After the mobile scaffolding for construction is used at the target position, the staff switches the contact form between the wheel body 420 and the ground to the first contact form through the switching component 430, and the support frame 100 then pushes the mobile scaffolding for construction to the next target position. The details are not repeated here.

[0023] In this embodiment, if Figure 4 and Figure 5As shown, the switching assembly 430 includes a hemispherical body 431, which is coaxially fixed to one end of the support shaft 410, and the hemispherical body 431 is rotatably arranged in the wheel body 420, and a rotating ring 432 is coaxially rotatably arranged in the wheel body 420, and there is a preset spacing between the rotating ring 432 and the hemispherical body 431, and an elastic member 433 is arranged in the preset spacing, and the two ends of the elastic member 433 are respectively connected to the rotating ring 432 and the hemispherical body 431, and the elastic member 433 is used to make the rotating ring 432 and the hemispherical body 431 keep away from each other, and an avoidance groove 421 is opened on one circumferential side of the wheel body 420, and the avoidance groove 421 is connected to 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] In this embodiment, a first annular plane 4311 is provided at one end of the hemisphere 431 coaxially fixed to the support shaft 410, and a second annular plane 422 is opened inside the wheel body 420. When the circumference of the wheel body 420 rolls in contact with the ground, the first annular plane 4311 and the second annular plane 422 fit each other.

[0028] When the outer circumference of the wheel body 420 rolls in contact with the ground, under the action of the elastic member 433, the hemisphere 431 and the rotating ring 432 move away from each other so that the first annular plane 4311 and the second annular plane 422 fit together. At this time, through the limiting effect 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.

[0029] In this embodiment, if Figure 4 As shown, a first annular plane 4311 is provided at one end of the hemispherical body 431 coaxially fixed to the support shaft 410, a second annular plane 422 is provided inside the wheel body 420, and a plurality of balls 423 are provided at equal intervals in the circumferential direction of the second annular plane 422. When the circumferential surface of the wheel body 420 rolls in contact with the ground, the first annular plane 4311 and the balls 423 rotate and abut against each other.

[0030] When the outer peripheral surface of the wheel body 420 rolls in contact with the ground, under the action of the elastic member 433, the hemisphere 431 and the rotating ring 432 move away from each other, so that the ball 423 rotates and abuts against the first annular plane 4311. At this time, there is no need to make the first annular plane 4311 and the second annular plane 422 fit each other. The wheel body 420 can be limited by the rotational abutment between the ball 423 and the first annular plane 4311, so that the wheel body 420 can maintain stable circumferential rolling without axially sliding relative to the support shaft 410 during the circumferential rolling.

[0031] In this embodiment, if Figure 4 , Figure 5 and Fig.10As shown, a guide block 434 is provided on one end face of the elastic member 433 facing the hemisphere 431, and a guide arc groove 4312 matched with the guide block 434 is provided on the spherical surface of the hemisphere 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 a state in which its circumference is in rolling contact with the ground to a state in which its outer side surface is in surface contact with the ground.

[0032] When it is necessary to switch the wheel body 420 from a state in which its outer peripheral surface is in rolling contact with the ground to a state in which its outer side surface is in surface contact with the ground, the staff lightly kicks the lower part of the wheel body 420 with their foot. At this time, the guide block 434 slides downward along the guide arc groove 4312, and the wheel body 420 switches from a state in which its outer peripheral surface is in rolling contact with the ground to a state in which its outer side surface is in surface contact with the ground. Conversely, when it is necessary to switch the wheel body 420 from a state in which its outer side surface is in surface contact with the ground to a state in which its outer peripheral surface is in rolling contact with the ground, the staff manually pushes the wheel body 420 upward, so that the hemisphere 431 slides from bottom to top along the guide arc groove 4312, so that the wheel body 420 rotates until its axis coincides with the axis of the support shaft 410.

[0033] In this embodiment, if Fig.10 As shown, a first spherical arc groove 424 is defined inside the wheel body 420 , and the axis of the first spherical arc groove 424 coincides with the axis of the wheel body 420 .

[0034] 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 rolls in contact with the ground, so as to further enhance the stability of the circumferential rotation of the wheel body 420 .

[0035] In this embodiment, if Fig.10 As shown, a second spherical arc groove 425 is provided inside the wheel body 420 and on one circumferential side close to the avoidance groove 421, and 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 connecting position between the first spherical arc groove 424 and the second spherical arc groove 425, and the inclined protrusion 426 is used to gradually increase the resistance encountered by the hemisphere 431 when it moves from the first spherical arc groove 424 to the second spherical arc groove 425.

[0036] When the outer peripheral surface of the wheel body 420 is in rolling contact with the ground, if the mobile scaffold for construction is subjected to a large instantaneous acceleration, such as an inertial collision, the wheel body 420 is forced to rotate in the circumferential direction. When the wheel body 420 rotates to the point where the avoidance groove 421 is facing downward, under the action of inertia, the hemisphere 431 overcomes the resistance of the inclined protrusion 426 and moves to the point where the outer spherical surface of the hemisphere 431 is in contact with the second spherical arc groove 425. At this time, the axis of the hemisphere 431 and the axis of the wheel body 420 no longer coincide with each other, and there is a gap between the hemisphere 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 "inner eight" state, thereby causing the wheel body 420 to stop quickly, thereby preventing safety accidents caused by the accidental movement distance of the mobile scaffold for construction.

[0037] It is understandable that when the staff pushes the mobile scaffolding for construction to move at a constant speed, the wheel body 420 is forced to rotate circumferentially. When the wheel body 420 rotates to the point where the avoidance groove 421 is facing downward, 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 hemisphere 431 still rotates in coordination with the first spherical arc groove 424, and cannot overcome the resistance of the inclined protrusion 426 and move from the first spherical arc groove 424 to the second spherical arc groove 425.

[0038] In this embodiment, if Figure 2 As shown, support rods 110 are detachably provided at the four corners of the support frame 100 .

[0039] The support rods 110 are provided to increase the stability of the mobile scaffolding for construction.

[0040] In this embodiment, if Figure 2 As shown, guardrails 120 are arranged outside the support frame 100 and around the working platform 200 .

[0041] The guardrail 120 is provided to improve the safety of workers when working on the working platform 200 .

[0042] In this embodiment, if Figure 2 As shown, a reinforcing rib 130 is disposed inside the supporting frame 100 .

[0043] The reinforcing ribs 130 are provided to enhance the supporting strength of the supporting frame 100 .

[0044] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.

[0045] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached 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 the switching component is connected between the support shaft and the wheel body.

2. A mobile scaffold for construction according to claim 1, characterized in that: The switching assembly includes a hemisphere, the hemisphere is coaxially fixed to 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 provided in the preset distance, two ends of the elastic member are respectively connected to the rotating ring and the hemisphere, and the elastic member is used to make the rotating ring and the hemisphere move away from each other; A circumferential side of the wheel body is provided with an escape groove, the escape groove is communicated with the interior of the wheel body, and the width of the escape groove is adapted to the diameter of the support shaft.

3. A mobile scaffold for construction according to claim 2, 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.

4. A mobile scaffold for construction according to claim 2, 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.

5. A mobile scaffold for construction according to claim 4, 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.

6. A mobile scaffold for construction according to claim 5, 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.

7. A mobile scaffold for construction according to claim 6, 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.

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

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

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

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