Tunnel mobile folding scaffold

Abstract

The application relates to the field of scaffolds, in particular to a tunnel movable folding scaffold, which comprises multiple stand columns, the stand columns are connected through connecting columns between upper and lower parts, the connecting columns are fixedly connected to the middle parts of the bottom ends of the stand columns, the stand columns are provided with uniformly distributed bayonets on one side of the periphery, multiple sliding mounting frames are mounted on the periphery of the stand columns, the sliding mounting frames comprise multiple connecting sleeves and fixing rods, the connecting sleeves are connected through the fixing rods, frame plates are arranged on the upper parts of the two sides of the sliding mounting frames, clamping plates are fixedly connected to one side of the periphery of the connecting sleeves, the connecting sleeves are mounted with moving bases through the clamping plates, driving wheels are arranged in the moving bases, the connecting sleeves are used for reinforcing and limiting the interfaces, the scaffold can adapt to the operation height requirements of different sections in the tunnel, can avoid the safety risks of high-altitude erection, can reduce the construction strength and can reduce the physical consumption of construction personnel.

Description

Technical Field

[0001] This invention relates to the field of scaffolding, and more particularly to a tunnel-type mobile folding scaffolding. Background Technology

[0002] In tunnel construction, scaffolding is an indispensable piece of equipment for working at heights. However, traditional scaffolding reveals many shortcomings under the special conditions of tunnels. Tunnels have narrow interior spaces, varying cross-sectional heights, and uneven, unleveled ground surfaces. Traditional scaffolding, mostly fixed or simple prefabricated structures, requires manual erection and transport of scaffolding panels layer by layer. This not only results in low construction efficiency but also poses safety hazards due to the height of the work. Furthermore, it is difficult to adapt to the varying working heights required for different tunnel cross-sections. Additionally, the support structures of traditional scaffolding are often of fixed length, making it impossible to adjust to changes in tunnel surface slope. The flexible distribution of debris can easily lead to slippage and instability. When construction machinery vibrates or workers shake during operation, there is a high risk of overturning. In addition, traditional scaffolding guardrails are mostly integral, which take up a lot of space when stored. When moving them in the narrow passages of tunnels, they are prone to scraping against surrounding facilities. Moreover, the disassembly and assembly process is cumbersome, which seriously affects the overall construction period of tunnels. It is difficult to meet the high standards of equipment mobility, safety and adaptability required for tunnel construction. Therefore, we propose a mobile folding scaffolding for tunnels to solve the above-mentioned problems. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of the prior art by proposing a tunnel-type mobile folding scaffold.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a tunnel mobile folding scaffold, comprising multiple columns, the upper and lower parts of which are connected by connecting columns, each connecting column being fixedly connected to the middle of the bottom end of the column; each column has evenly distributed slots on one side of its outer perimeter; multiple sliding mounting frames are installed on the outer perimeter of each column; each sliding mounting frame includes multiple connecting sleeves and fixing rods; the connecting sleeves are connected by fixing rods; frame plates are mounted on both sides of the upper part of each sliding mounting frame; each connecting sleeve is fixedly connected to a clamping plate on one side of its outer perimeter; and each connecting sleeve is mounted with a clamping plate. The movable base has a drive wheel installed inside. A servo motor is installed at one end of the central shaft of each drive wheel. The servo motor is installed inside the movable base. Each drive wheel engages with a bayonet through a ball bearing installed on its outer periphery. The side of each drive wheel near the column passes through the end of the movable base. A stop plate is rotatably connected to the bottom of the movable base near the column. A set plate is fixedly connected to one end of each stop plate with evenly distributed locking pins. The locking pins are used to engage with the bayonet. An electric push rod is rotatably connected to the bottom of the movable base away from the column. The end of the electric push rod away from the movable base is rotatably connected to the stop plate.

[0005] Preferably, a connecting seat is installed on both sides of the top of the frame plate, and a side frame is rotatably connected to one side of each connecting seat. Each side frame includes multiple crossbars, and a slot is opened at one end of each crossbar. Limiting grooves are opened on both sides of each slot, and a connecting frame is provided inside each slot. Limiting posts are installed at the ends of each connecting frame, and the limiting posts are slidably connected to the inside of the limiting grooves. The tops of adjacent side frames are connected to fixing bolts through connecting plates.

[0006] Preferably, a connecting seat 2 is provided on one side of the top center of each of the frame plates, and a side frame 2 is rotatably connected to one side of each connecting seat 2. Each side frame 2 includes multiple side plates, and the side plates are slidably connected to each other by a guide rod 1. A guide rod 2 is fixedly connected to one side of the bottom of each side plate, and the guide rod 2 is movably connected to the connecting seat 2. Multiple sliding rods are provided between each side plate, and rotating rods are slidably connected to both ends of the outer periphery of each sliding rod. The end of each rotating rod away from the sliding rod is rotatably connected to the side plate.

[0007] Preferably, each of the columns is equipped with an installation ring at the center of its outer perimeter, and a connecting plate is fixedly connected to the center of one side of each installation ring. The end of each connecting plate is connected to the end crossbar by a fixing bolt.

[0008] Preferably, one side of the connecting plate is connected to the side plate of the edge by fixing bolts, and the bottom of the bottom column is equipped with casters.

[0009] Preferably, a straight rod is installed on the side of the lower mounting ring away from the connecting plate, and a connecting rod is rotatably connected to the end of the straight rod away from the mounting ring.

[0010] Preferably, the end of the connecting rod away from the straight rod is fixedly connected to a limiting rod, the outer periphery of the end of the limiting rod is slidably connected to a throwing rod, and the end of the throwing rod away from the limiting rod is rotatably connected to a base.

[0011] Preferably, each of the limiting rods is rotatably connected to a threaded rod, the outer threaded portion of the threaded rod is threadedly connected to the inside of the throwing rod, and the upper outer part of the threaded rod is fixedly connected to a driven bevel gear.

[0012] Preferably, each of the driven bevel gears is meshed with a driving bevel gear on one side, and each driving bevel gear is fixedly connected to a handwheel in the middle, with each handwheel mounted on one side of the connecting rod.

[0013] Preferably, both the driving bevel gear and the driven bevel gear are disposed inside the connecting rod, and both the threaded rod and the handwheel are rotatably connected to the connecting rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. This invention uses a servo motor inside the moving base to drive the drive wheel to rotate along the column clamp, thereby raising and lowering the entire sliding mounting frame without the need for manual climbing and carrying of the frame panels. Construction workers can first raise the sliding mounting frame to the designated height before laying the frame panels, and all sliding mounting frames can move synchronously to the column connection point. The interface is reinforced and limited using the connecting sleeve. This not only adapts to the working height requirements of different cross-sections in tunnels, but also avoids the safety risks of high-altitude erection, reduces construction intensity, and reduces the physical exertion of construction workers.

[0016] 2. After the sliding mounting frame is moved into place, the electric push rod can push the bottom plate to flip, so that the locking post on the bottom plate is embedded in the column locking slot, forming a double fixing structure of active wheel engagement and locking post engagement. This can effectively resist the influence of external forces such as vibration of construction machinery and shaking of personnel in the tunnel, prevent scaffolding from overturning, and ensure construction safety in the narrow space of the tunnel. The double fixing can effectively ensure the stability of operation in the tunnel.

[0017] 3. This invention uses a lower mounting ring to form an adjustable support system consisting of a straight rod, a connecting rod, and a throwing rod. This system can not only adjust the support angle of the connecting rod according to the slope and unevenness of the tunnel surface, but also drive the threaded rod to adjust the extension length of the throwing rod by rotating the handwheel to drive the bevel gear transmission, so that the base can be stably attached to the ground. This structure can adapt to the uneven and debris-filled complex ground in tunnels, greatly improve the overall anti-overturning ability of the scaffolding, and solve the problem of traditional scaffolding being prone to slipping and instability on tunnel surfaces.

[0018] 4. The present invention features two side frames that can be folded and stored together, which can be retracted when the scaffolding is moved or when working at a low position, reducing the space occupied in the narrow passage of the tunnel. When working at a high position, they can be quickly unfolded. The protective range can be flexibly extended through the sliding and rotating cooperation of the connecting frame, sliding rod and rotating rod. It can also be fixed by the connecting plate and the column mounting ring to form a closed protective railing. The foldable protective railing is suitable for the limited working space in the tunnel, which not only ensures the safety of personnel working at height in the tunnel, but also avoids the protective structure from occupying too much construction space. Attached Figure Description

[0019] Figure 1 This is a frontal three-dimensional structural diagram of a tunnel mobile folding scaffold according to the present invention;

[0020] Figure 2 This is a schematic diagram of the unfolded side frame of a tunnel mobile folding scaffold according to the present invention;

[0021] Figure 3 This is a partial structural diagram of the launching rod of a tunnel mobile folding scaffold according to the present invention;

[0022] Figure 4 This is a partial structural diagram of the movable seat of a tunnel-type mobile folding scaffold according to the present invention;

[0023] Figure 5 This is a partial structural diagram of the abutment of a tunnel-type mobile folding scaffold according to the present invention;

[0024] Figure 6 This is a schematic diagram of a partial structure inside the crossbar of a tunnel-type mobile folding scaffold according to the present invention.

[0025] Figure 7 This is a schematic diagram of a partial structure inside the side plate of a tunnel-type mobile folding scaffold according to the present invention.

[0026] 101. Fixed rod; 102. Casters; 103. Base; 104. Throwing rod; 105. Movable seat; 106. Upright column; 107. Connecting seat one; 108. Electric push rod; 109. Straight rod; 110. Handwheel; 111. Limiting rod; 112. Connecting rod; 113. Horizontal bar; 114. Connecting seat two; 115. Side plate; 116. Shelf plate; 117. Bayonet; 118. Threaded rod; 119. Driven cone 120. Gear; 121. Drive bevel gear; 122. Mounting ring; 123. Connecting plate one; 124. Guide rod one; 125. Connecting frame; 126. Drive wheel; 127. Clamping plate; 128. Connecting sleeve; 129. Abutment plate; 130. Clamping post; 131. Connecting plate two; 132. Limiting groove; 133. Limiting post; 134. Groove; 135. Slide rod; 136. Rotating rod; 137. Guide rod two. Detailed Implementation

[0027] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0028] like Figures 1-7 The tunnel mobile folding scaffold shown includes multiple uprights 106, with the upper and lower uprights 106 connected by connecting columns 130. Each connecting column 130 is fixedly connected to the middle of the bottom end of the upright 106. Evenly distributed slots 117 are provided on one side of the outer perimeter of each upright 106. Multiple sliding mounting frames are installed on the outer perimeter of each upright 106. Each sliding mounting frame includes multiple connecting sleeves 127 and fixing rods 101, with the connecting sleeves 127 connected to each other by the fixing rods 101. The upper two... Each side is equipped with a frame plate 116. Each side of the outer circumference of the connecting sleeve 127 is fixedly connected with a clamping plate 126. Each connecting sleeve 127 is equipped with a movable seat 105 through the clamping plate 126. Each movable seat 105 is equipped with a drive wheel 125. Each drive wheel 125 is equipped with a servo motor at one end of the shaft in the middle. Each servo motor is installed inside the movable seat 105. Each drive wheel 125 is engaged with the clamping slot 117 through the protruding ball installed on the outer circumference. The side of the drive wheel 125 near the column 106 passes through the end of the movable seat 105.

[0029] Furthermore, in specific implementation, the connecting column 130 at the bottom of the column 106 enables docking and positioning of the column 106, ensuring that after docking, the latches 117 on one side are aligned. The required number of connecting sleeves 127 are then fitted onto each column 106 according to the desired number of layers. The sliding mounting brackets are then assembled using the threads on the fixing rod 101. These brackets allow the columns 106 to be combined. After assembling all the sliding mounting brackets, the movable seat 105 is installed onto the clamping plate 126 using fixing bolts. Once installed, the protruding ball on the drive wheel 125 engages with the latch 117, and then the internal mechanism of the movable seat 105 is activated. The servo motor drives the drive wheel 125 to rotate. When the drive wheel 125 rotates, it drives the sliding mounting frame to move up and down as a whole through the clamping plate 126 and the connecting sleeve 127. In use, people can first control the sliding mounting frame to rise a section, and then people can set up the frame plate 116 on the upper part of the sliding mounting frame. Then repeat the above steps to continue installing the lower movable seat 105. After all the movable seats 105 are installed, people can control the servo motor to move each sliding mounting frame upward, so that each sliding mounting frame can move to the connection point of each column 106, so that the connecting sleeve 127 can further protect and limit the connection point of the column 106 to prevent overturning.

[0030] Among them, the bottom of the movable seat 105 is rotatably connected to the side of the column 106, and the side of the column 106 is fixedly connected to the end of the side plate 128. The evenly distributed locking pins 129 are fixedly connected to one end of the side plate 128. The locking pins 129 are used to engage with the locking slot 117. The bottom of the movable seat 105 is rotatably connected to the side of the column 106, and the side of the electric push rod 108 is rotatably connected to the side plate 128. The middle of the outer perimeter of the column 106 is equipped with an installation ring 121. The middle of one side of the installation ring 121 is fixedly connected to a connecting plate 122. The end of the connecting plate 122 is connected to the end crossbar 113 by fixing bolts. The side of the connecting plate 122 is connected to the side plate 115 by fixing bolts. The bottom of the bottom column 106 is equipped with a caster wheel 102.

[0031] Furthermore, in practical implementation, after the sliding mounting frame is moved into place, people activate the electric push rod 108, which pushes the abutment plate 128, causing the abutment plate 128 to flip and fit tightly against the column 106. This allows the locking post 129 on the abutment plate 128 to engage with the locking slot 117, thus limiting and fixing the sliding mounting frame. In practical use, the casters 102 facilitate convenient movement of the scaffolding.

[0032] The frame 116 has connecting seats 107 installed on both sides of its top. Each connecting seat 107 is rotatably connected to a side frame 1. Each side frame 1 includes multiple crossbars 113. A slot 134 is opened at the adjacent end of each crossbar 113. Limiting grooves 132 are opened on both sides of each slot 134. Connecting frames 124 are installed inside each slot 134. Limiting posts 133 are installed at the ends of each connecting frame 124. The limiting posts 133 are slidably connected to the inside of the limiting grooves 132. The tops of adjacent side frames 1 are connected to fixing bolts via connecting plates 131. A connecting seat 2 114 is provided on one side of the top center of 116. A side frame 2 is rotatably connected to one side of the connecting seat 2 114. The side frame 2 includes multiple side plates 115. The side plates 115 are slidably connected to each other through a guide rod 123. A guide rod 2 137 is fixedly connected to one side of the bottom of the side plate 115. The guide rod 2 137 is movably connected to the connecting seat 2 114. Multiple sliding rods 135 are provided between the side plates 115. A rotating rod 136 is slidably connected to both ends of the outer periphery of the sliding rod 135. The end of the rotating rod 136 away from the sliding rod 135 is rotatably connected to the side plate 115.

[0033] Furthermore, in practical implementation, after the frame is installed, people can climb the scaffolding using auxiliary ladders. After climbing onto the scaffolding board 116, people can install the mounting ring 121 onto the upright 106 using fixing bolts. Then, side frame one and side frame two are flipped up in sequence. After that, people can stretch the horizontal bar 113 and the side plate 115. After unfolding side frame one and side frame two, people can install and connect the horizontal bar 113 and the side plate 115 to the connecting plate one 122 using fixing bolts to achieve the installation of the guardrail.

[0034] Among them, a straight rod 109 is installed on the side of the lower mounting ring 121 away from the connecting plate 122. A connecting rod 112 is rotatably connected to the end of the straight rod 109 away from the mounting ring 121. A limit rod 111 is fixedly connected to the end of the connecting rod 112 away from the straight rod 109. A throwing rod 104 is slidably connected to the outer periphery of the end of the limit rod 111. A base 103 is rotatably connected to the end of the throwing rod 104 away from the limit rod 111. A threaded rod 118 is rotatably connected inside the limit rod 111. The outer circumferential threaded portion of the threaded rod 118 is threadedly connected to the inside of the throwing rod 104. The upper part of the outer circumference of the threaded rod 118 is fixedly connected to the driven bevel gear 119. The driven bevel gear 119 is meshed with the driving bevel gear 120 on one side. The middle part of the driving bevel gear 120 is fixedly connected to the handwheel 110. The handwheel 110 is installed on one side of the connecting rod 112. The driving bevel gear 120 and the driven bevel gear 119 are both located inside the connecting rod 112. The threaded rod 118 and the handwheel 110 are rotatably connected to the connecting rod 112.

[0035] Furthermore, in practical implementation, the straight rod 109 can be installed onto the lower mounting ring 121 via the connecting thread. The connecting rod 112 and the throwing rod 104 can support the bottom column 106. In actual use, the support angle of the connecting rod 112 and the throwing rod 104 can be adjusted according to the height of the scaffold. After adjustment, the handwheel 110 can be turned, which drives the active bevel gear 120 to rotate. The active bevel gear 120 drives the driven bevel gear 119 that meshes with it to rotate. The driven bevel gear 119 drives the threaded rod 118 to rotate, thus facilitating the adaptive adjustment of the length of the throwing rod 104, which is beneficial to improving the support effect and adapting to the complex ground construction conditions during tunnel construction.

[0036] Working principle:

[0037] During installation, the connecting column 130 at the bottom of the column 106 is used to connect and position the column 106, ensuring that the latches 117 on one side are aligned after the column 106 is connected. The corresponding number of connecting sleeves 127 are then fitted onto each column 106 according to the required number of layers. The sliding mounting brackets are then assembled using the threads on the fixing rod 101. These brackets allow the columns 106 to be combined. After assembling all the sliding mounting brackets, the movable base 105 is installed onto the clamping plate 126 using fixing bolts. Once installed, the ball bearings on the drive wheel 125 engage with the latches 117. The servo motor inside the movable base 105 is then activated, driving the main... The drive wheel 125 rotates, and when the drive wheel 125 rotates, it drives the sliding mounting bracket to move up and down as a whole through the clamping plate 126 and the connecting sleeve 127. In use, people can first control the sliding mounting bracket to rise a section, and then people can place the bracket plate 116 on the upper part of the sliding mounting bracket. Then, the above steps are repeated to continue installing the lower movable seat 105. After all the movable seats 105 are installed, people can control the servo motor to move each sliding mounting bracket upward, so that each sliding mounting bracket can move to the connection point of each column 106, so that the connecting sleeve 127 can further protect and limit the connection point of the column 106 to prevent overturning. After the sliding mounting bracket moves into place, people can start the electric push rod 108, which drives the sliding mounting bracket to move up and down through the electric motor. Push rod 108 can push the stop plate 128, causing the stop plate 128 to flip and fit tightly against the column 106, so that the locking pin 129 on the stop plate 128 will engage with the slot 117, thereby limiting and fixing the sliding mounting bracket. Then, the straight rod 109 can be installed onto the lower mounting ring 121 via the connecting thread. The connecting rod 112 and the throwing rod 104 provide support for the bottom column 106. In actual use, the support angles of the connecting rod 112 and the throwing rod 104 can be adjusted according to the height of the scaffold. After adjustment, the handwheel 110 can be turned, which drives the driving bevel gear 120 to rotate. The driving bevel gear 120 then drives the driven bevel gear 119 meshing with it to rotate. The driven bevel gear 119 can drive the threaded rod 118 to rotate, which allows for convenient adjustment of the length of the throwing rod 104, improving the support effect and adapting to the complex ground construction conditions during tunnel construction. After the frame is installed, people can climb the scaffolding using the auxiliary ladder. After climbing onto the frame plate 116, people can install the mounting ring 121 onto the column 106 using fixing bolts. Then, side frame one and side frame two are flipped up in sequence. After that, people can stretch the crossbar 113 and the side plate 115. After unfolding side frame one and side frame two, people can install and connect the crossbar 113 and the side plate 115 to the connecting plate 122 using fixing bolts to complete the installation of the guardrail.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A tunnel-type mobile folding scaffold, comprising multiple columns (106), characterized in that: The upper and lower columns (106) are connected by connecting columns (130), which are fixedly connected to the middle of the bottom of the column (106). Each column (106) has evenly distributed slots (117) on one side of its outer perimeter. Multiple sliding mounting brackets are installed on the outer perimeter of each column (106). Each sliding mounting bracket includes multiple connecting sleeves (127) and fixing rods (101). The connecting sleeves (127) are connected by fixing rods (101). Mounting plates (116) are mounted on both sides of the upper part of each sliding mounting bracket. A locking plate (126) is fixedly connected to one side of each connecting sleeve (127). Each connecting sleeve (127) has a movable seat (105) installed through the locking plate (126). Each movable seat (105) has a drive wheel (125) installed inside. A servo motor is installed at one end of the central shaft of each wheel (125). The servo motors are installed inside the moving seat (105). The driving wheels (125) are engaged with the bayonet (117) through the outer circumference of the protruding balls. The side of the driving wheel (125) near the column (106) passes through the end of the moving seat (105). The bottom of the moving seat (105) near the column (106) is rotatably connected to a stop plate (128). One end of the stop plate (128) is fixedly connected to evenly distributed locking pins (129). The locking pins (129) are used to engage with the bayonet (117). The bottom of the moving seat (105) away from the column (106) is rotatably connected to an electric push rod (108). The end of the electric push rod (108) away from the moving seat (105) is rotatably connected to the stop plate (128).

2. The tunnel mobile folding scaffolding according to claim 1, characterized in that: The top two sides of the frame plate (116) are each equipped with a connecting seat (107). Each side of the connecting seat (107) is rotatably connected to a side frame. Each side frame includes multiple crossbars (113). Each crossbar (113) has a slot (134) at one end close to each other. Each slot (134) has a limiting groove (132) on both sides. Each slot (134) has a connecting frame (124) on the inside. Each connecting frame (124) has a limiting post (133) installed at the end. Each limiting post (133) is slidably connected to the inside of the limiting groove (132). The tops of adjacent side frames are connected to fixing bolts through a connecting plate (131).

3. The tunnel mobile folding scaffolding according to claim 2, characterized in that: Each of the top middle sections of the frame plate (116) is provided with a connecting seat 2 (114), and each of the connecting seat 2 (114) is rotatably connected to a side frame 2. Each of the side frames 2 includes multiple side plates (115). The side plates (115) are slidably connected to each other by a guide rod 1 (123). Each of the side plates (115) is fixedly connected to a guide rod 2 (137) on one side of the bottom. The guide rod 2 (137) is movably connected to the connecting seat 2 (114). Each of the side plates (115) is provided with multiple sliding rods (135). Each of the two ends of the outer periphery of the sliding rod (135) is slidably connected to a rotating rod (136). The end of the rotating rod (136) away from the sliding rod (135) is rotatably connected to the side plate (115).

4. A tunnel mobile folding scaffold according to claim 3, characterized in that: Each of the columns (106) has an installation ring (121) installed in the middle of its outer periphery. Each of the installation rings (121) has a connecting plate (122) fixedly connected to the middle of one side. The ends of the connecting plate (122) are connected to the end crossbar (113) by fixing bolts.

5. A tunnel mobile folding scaffold according to claim 4, characterized in that: One side of the connecting plate (122) is connected to the side plate (115) by fixing bolts, and the bottom of the column (106) is equipped with casters (102).

6. A tunnel mobile folding scaffold according to claim 5, characterized in that: A straight rod (109) is installed on the side of the lower mounting ring (121) away from the connecting plate (122), and a connecting rod (112) is rotatably connected to the end of the straight rod (109) away from the mounting ring (121).

7. A tunnel mobile folding scaffold according to claim 6, characterized in that: The end of the connecting rod (112) away from the straight rod (109) is fixedly connected to a limiting rod (111), and a throwing rod (104) is slidably connected to the outer periphery of the end of the limiting rod (111). The end of the throwing rod (104) away from the limiting rod (111) is rotatably connected to a base (103).

8. A tunnel mobile folding scaffold according to claim 7, characterized in that: Each of the limiting rods (111) is rotatably connected to a threaded rod (118), and the threaded portion of the outer periphery of the threaded rod (118) is threadedly connected to the inside of the throwing rod (104). Each of the upper outer periphery of the threaded rod (118) is fixedly connected to a driven bevel gear (119).

9. A tunnel mobile folding scaffold according to claim 8, characterized in that: Each driven bevel gear (119) is meshed with a driving bevel gear (120) on one side. Each driving bevel gear (120) is fixedly connected to a handwheel (110) in the middle. Each handwheel (110) is installed on one side of the connecting rod (112).

10. A tunnel mobile folding scaffold according to claim 9, characterized in that: The driving bevel gear (120) and the driven bevel gear (119) are both located inside the connecting rod (112), and the threaded rod (118) and the handwheel (110) are rotatably connected to the connecting rod (112).

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