Trolley for mounting segmented reinforcement cage at top of tunnel

Abstract

The invention provides a trolley for mounting a segmented reinforcement cage at the top of a tunnel, and belongs to the technical field of tunnel construction devices. A first arc-shaped track and a second arc-shaped track are arranged at the top of the trolley, and a hoist trolley is mounted on the first arc-shaped track; a reinforcement cage in a longitudinal placement state in a reinforcement cage storage area is firstly lifted from the outer side of a ventilation pipe to the height higher than the ventilation pipe through the hoist trolley, then the hoist trolley lifts the reinforcement cage to move towards the middle position below a first arc-shaped rail, and the reinforcement cage is conveniently rotated from the longitudinal direction to the transverse direction; a reinforcement cage mounting trolley is mounted on the second arc-shaped track and is used for grabbing a reinforcement cage and conveying the reinforcement cage to a specified mounting position on the top surface of the tunnel; a longitudinal moving trolley is further arranged on the trolley body and used for conveying the reinforcement cage which is hoisted by the hoist trolley and is in the transverse state to the reinforcement cage installation trolley. The working efficiency can be greatly improved, the personnel investment is reduced, and the accuracy of the installation position of the reinforcement cage can be effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel construction device, and particularly relates to a trolley for installing tunnel top segmental reinforcement cage. BACKGROUND

[0002] In the tunnel construction process, reinforcement cage binding is a necessary process, and only after the reinforcement is bound can the tunnel secondary lining concrete be poured, and the quality and efficiency of reinforcement cage binding directly affect the subsequent process and even the quality and progress of the entire tunnel construction. The existing tunnel reinforcement installation adopts a binding mode, which requires multiple people to stand at different positions on the reinforcement trolley to jointly relay and deliver the reinforcement to the trolley, and then jointly lift and fix the reinforcement, which is low in work efficiency, requires many people, is high in labor intensity, and cannot effectively guarantee the accuracy of the installation position of the reinforcement cage. At present, the existing reinforcement operation trolley only serves as a scaffold function and cannot meet the assembly type reinforcement installation demand.

[0003] For assembly type reinforcement cage installation, the reinforcement cage at the top of the tunnel is in an arc shape and needs to be installed in segments (can be divided into three segments, that is, three arc-shaped reinforcement cages are arranged in sequence at the top of the tunnel at a construction position of a section, so as to form a large arc-shaped reinforcement cage at the top of the tunnel), and in the construction process, the weight of each segmental reinforcement cage is about 800 kg, which is relatively heavy and cannot be installed by pure manual mode, so an equipment for installing the segmental reinforcement cage at the top of the tunnel needs to be designed. SUMMARY

[0004] The present application aims at solving the problems of the prior art and provides a trolley for installing a segmental reinforcement cage at the top of a tunnel.

[0005] The present application is implemented by the following technical solutions: A trolley for installing a segmental reinforcement cage at the top of a tunnel comprises a trolley body, a first arc-shaped track and a second arc-shaped track are arranged on the top of the trolley body, a reinforcement cage storage area is arranged at the position of the trolley body below the first arc-shaped track, a hoist trolley is installed on the first arc-shaped track to provide hoisting and moving functions for the reinforcement cage, a reinforcement cage installation trolley is installed on the second arc-shaped track to grab the reinforcement cage and transport the reinforcement cage to a designated installation position on the top surface of the tunnel, and a longitudinal moving trolley is arranged on the trolley body to transport the reinforcement cage hoisted by the hoist trolley to the reinforcement cage installation trolley.

[0006] In the above technical solution, the radii of the first arc-shaped track and the second arc-shaped track are consistent with the radius of the top surface of the tunnel, the first arc-shaped track and the second arc-shaped track are arranged at intervals, and the upper surfaces of the first arc-shaped track and the second arc-shaped track are provided with teeth.

[0007] In the above technical solution, the reinforcement cage storage area is located on the outer side of the ventilation pipe.

[0008] In the above technical solution, the longitudinal moving trolley is installed on the longitudinal rail at the middle position of the top of the trolley body, can move along the longitudinal direction, and the height of the longitudinal moving trolley is less than the height of the first arc-shaped rail, so that the longitudinal moving trolley can pass through the first arc-shaped rail.

[0009] In the above technical solution, the reinforcement cage storage area has a bracket for carrying the reinforcement cage in the longitudinal state.

[0010] In the above technical solution, the bracket of the reinforcement cage storage area is hoisted by the winch on the trolley body.

[0011] In the above technical solution, the main framework of the trolley body includes a lower portal frame and an upper portal frame, the middle left area of the upper portal frame is used to accommodate two parallel ventilation pipes, the right area of the upper portal frame serves as the reinforcement cage storage area, the longitudinal rail is arranged at the middle position of the top of the upper portal frame for the longitudinal moving trolley to travel, a step ladder is further arranged on the trolley body for workers to go up and down, a through pipe guide cylinder is arranged at each end of the trolley body for the ventilation pipe to pass through, the first arc-shaped rail is installed on the upper portal frame, and the second arc-shaped rail is installed on the lower portal frame, the height of the first arc-shaped rail is greater than the height of the second arc-shaped rail.

[0012] In the above technical solution, the bottom end of the hoisting rope of the gourd trolley is connected to a hoisting bracket, the hoisting bracket is arc-shaped, and a plurality of hoisting hooks are arranged on the hoisting bracket at intervals.

[0013] In the above technical solution, the longitudinal moving trolley has the following structure: a bottom plate is arranged, walking wheels are arranged at the bottom of the bottom plate, a vertical frame is arranged on the bottom plate, a lifting arm driven by a lifting drive cylinder is arranged on the vertical frame, and the lifting arm is used to insert into the bottom of the reinforcement cage to lift the reinforcement cage.

[0014] In the technical scheme, the structure of the reinforcing cage installation trolley comprises a base shell, a wheel set is installed on the base shell and matched with the second arc-shaped track to realize the reinforcing cage installation trolley walking along the second arc-shaped track, two reinforcing cage grabbing and positioning mechanisms are symmetrically arranged on the base shell to realize the grabbing and positioning of the reinforcing cage, the reinforcing cage grabbing and positioning mechanism comprises a longitudinally arranged supporting frame, two sliding seats are slidingly installed on the supporting frame, a grabbing hook is arranged on each sliding seat, the grabbing hook is installed on the outer side wall of the sliding seat through a rotating shaft and a rotating shaft connecting lug ear, a grabbing driving cylinder is arranged between the bottom end of the grabbing hook and the bottom end of the sliding seat, a longitudinal moving driving cylinder is arranged on the supporting frame, the longitudinal moving driving cylinder is connected with one of the sliding seats, and the two sliding seats are connected through a connecting plate, so that the two sliding seats are synchronously driven to slide along the supporting frame through the longitudinal moving driving cylinder, a lifting driving cylinder is arranged in the base shell, the supporting frame is installed on the top of the lifting driving cylinder through a hinged support, the hinge shaft of the hinged support is arranged perpendicularly to the longitudinal supporting frame, and a pitching driving cylinder is arranged between the hinged support and the supporting frame.

[0015] The advantages and beneficial effects of the present application are as follows: The first arc-shaped track and the second arc-shaped track are arranged on the top of the trolley, the position of the trolley body below the first arc-shaped track is arranged as a reinforcing cage storage area, a hoist trolley is installed on the first arc-shaped track, the hoist trolley is used to first hoist the reinforcing cage in a longitudinal placement state from the outer side of the ventilation pipe to a height higher than the ventilation pipe, then the hoist trolley is used to move the reinforcing cage to a middle position below the first arc-shaped track, so that the reinforcing cage has sufficient space to rotate from the longitudinal state to the transverse state, a reinforcing cage installation trolley is installed on the second arc-shaped track, the reinforcing cage installation trolley can walk along the second arc-shaped track, can grab the reinforcing cage and transport the reinforcing cage to a designated installation position on the top surface of the tunnel, and a longitudinal transporting trolley is further arranged on the trolley body, the longitudinal transporting trolley is used to transport the reinforcing cage in the transverse state hoisted by the hoist trolley to the reinforcing cage installation trolley. The trolley of the present application utilizes the cooperative work of the hoist trolley, the longitudinal transporting trolley and the reinforcing cage installation trolley, can greatly improve the work efficiency, reduce the personnel investment, and can effectively ensure the accuracy of the reinforcing cage installation position. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a front view structural schematic diagram of the trolley for installing the reinforcing cage of the tunnel top section.

[0017] Figure 2 It is a side view structural schematic diagram of the trolley for installing the reinforcing cage of the tunnel top section.

[0018] Figure 3 It is a hoisting structure schematic diagram of the bracket.

[0019] Figure 4 Structure diagram of main frame of trolley body.

[0020] Figure 5 Structure diagram of hanging rope connecting hanging frame of gourd trolley.

[0021] Figure 6 Structure diagram of longitudinal moving trolley.

[0022] Figure 7 Structure diagram of longitudinal moving trolley after lifting arm is lifted up.

[0023] Figure 8 Three-dimensional structure diagram of steel cage installation trolley.

[0024] Figure 9 Side view internal structure diagram of steel cage installation trolley.

[0025] Figure 10 Front view internal structure diagram of steel cage installation trolley.

[0026] Figure 11 Front view structure diagram of another embodiment of trolley for installing tunnel top segment steel cage.

[0027] For those skilled in the art, other related drawings can be obtained according to the above drawings without creative labor. DETAILED DESCRIPTION

[0028] In order to make the person in the art better understand the technical scheme of the present application, the technical scheme of the present application is further explained below in combination with specific embodiments.

[0029] The present embodiment provides a trolley for installing tunnel top segment steel cage, referring to the drawings of Figure 1 and Figure 2, including the trolley body 1, the trolley body bottom is provided with a walking wheel device 101, for realizing the trolley along the tunnel walking; The trolley body 1 top is provided with first arc track 11 and second arc track 12, the radian of first arc track 11 and second arc track 12 is consistent with the radian of tunnel top surface, first arc track and second arc track are spaced apart;In the trolley body position below first arc track 11, it is set to be the reinforcement cage storage area 2, reinforcement cage 3 is stored in the reinforcement cage storage area 2, it needs to be explained that the reinforcement cage storage area is located at the outside of ventilation pipe 4, for longitudinally accommodating reinforcement cage 3;Hoist trolley 5 is installed on first arc track 11, hoist trolley 5 can walk on first arc track 11, for providing hoisting and moving function for reinforcement cage 3 (here, hoisting and moving function refers to the function of vertical lifting and horizontal moving, first, the reinforcement cage 3 in longitudinal placement state of reinforcement cage storage area 2 is lifted from the outside of ventilation pipe 4 to the height higher than ventilation pipe, then hoist trolley 5 moves with reinforcement cage 3 to the middle position below first arc track 11, so that reinforcement cage 3 has enough activity space in the middle position, for rotating reinforcement cage 3 from longitudinal to horizontal);Reinforcement cage installation trolley 6 is installed on second arc track 12, reinforcement cage installation trolley 6 can walk on second arc track 12, for grabbing reinforcement cage and sending reinforcement cage to the designated installation position of tunnel top surface;Longitudinal moving trolley 7 is arranged on the trolley body 1, the longitudinal moving trolley 7 is installed on the longitudinal track 8 in the middle position of trolley body 1 top, can move along the longitudinal direction, and the height of longitudinal moving trolley 7 is less than the height of first arc track 11, so that longitudinal moving trolley 7 can pass through first arc track 11, longitudinal moving trolley 7 is used to send reinforcement cage 3 hoisted by hoist trolley 5 to reinforcement cage installation trolley 6.

[0030] It needs to be explained that the longitudinal direction in the embodiment refers to the direction along the length of the tunnel.

[0031] As a preferred mode, further, the reinforcement cage storage area 2 has bracket 9, for carrying longitudinal state reinforcement cage 3, preferably, three longitudinal state reinforcement cages 3 are carried on bracket 9, and the three reinforcement cages are three sectional reinforcement cages to be installed on the tunnel top surface.

[0032] As a preferred mode, further, the bracket 9 of reinforcement cage storage area is hoisted by winch 91 on trolley body 1. Figure 1 and attached Figure 3Two winches 91 are symmetrically arranged at both sides of the reinforcement cage storage area 2 on the trolley body 1, and a pulley assembly 92 is arranged above the winch 91. The lifting rope of the winch 91 is connected to the bracket 9 through the pulley assembly 92, so as to realize the lifting and lowering of the bracket 9, and realize the material transfer with the ground material transport vehicle (i.e. the bracket carrying the reinforcement cage is transported to the position below the trolley by the ground material transport vehicle, and then the bracket 9 is connected to the lifting rope of the winch, and the bracket 9 carrying the reinforcement cage is lifted to the reinforcement cage storage area 2 by the winch).

[0033] As a preferred mode, further referring to the accompanying Figure 4 The main framework of the trolley body 1 includes a lower portal 102 and an upper portal 103. The middle left area 1031 of the upper portal 103 is used to accommodate two parallel ventilation pipes 4, and the right area 1032 of the upper portal 103 serves as the reinforcement cage storage area 2. A longitudinal rail 8 is arranged at the top middle position of the upper portal 103, and the longitudinal moving trolley 7 runs on the longitudinal rail 8. A step ladder 104 is arranged on the trolley body 1, which is used for the construction personnel to go up and down. A through pipe guide cylinder 105 is arranged at both ends of the trolley body 1, and the ventilation pipe 4 penetrates into the through pipe guide cylinder 105.

[0034] The first arc-shaped rail 11 is arranged on the upper portal 103, and the second arc-shaped rail 12 is arranged on the lower portal 102. The length of the second arc-shaped rail 12 is large enough, so that the running range of the reinforcement cage installation trolley 6 on the second arc-shaped rail 12 can reach the construction positions of the three segments of the tunnel top surface. In addition, the height of the first arc-shaped rail 11 is greater than the height of the second arc-shaped rail 12, and there is enough space between the second arc-shaped rail 12 and the tunnel top surface for installing the reinforcement cage installation trolley 6. The upper surfaces of the first arc-shaped rail 11 and the second arc-shaped rail 12 are provided with teeth, which are used to realize the running of the hoist trolley 5 and the reinforcement cage installation trolley 6 on the rails.

[0035] As a preferred mode, further referring to the accompanying Figure 5 The bottom end of the lifting rope of the hoist trolley 5 is connected to a lifting bracket 51, the lifting bracket 51 is arc-shaped, a plurality of lifting hooks 52 are arranged on the lifting bracket 51 at intervals, and the lifting hooks 52 are connected to the reinforcement cage 3.

[0036] As a preferred mode, further referring to the accompanying Figure 6 and the accompanying Figure 7The structure of the longitudinal moving trolley 7 comprises a bottom plate 71, the bottom of the bottom plate 71 is provided with walking wheels 72, the walking wheels 72 are driven by a motor to realize the walking of the longitudinal moving trolley 7; a vertical stand 73 is arranged on the bottom plate 71, a lifting arm 74 is installed on the vertical stand 73 through a sliding block 75, a lifting driving cylinder 76 is arranged on the vertical stand 73, the action end of the lifting driving cylinder 76 is connected with the sliding block 75 through a connecting piece, and then the lifting arm 74 is controlled to ascend and descend through the lifting driving cylinder 76; during work, the lifting arm 74 is inserted into the bottom of the reinforcement cage 3, then the lifting driving cylinder 76 controls the lifting arm 74 to lift, so that the reinforcement cage 3 is lifted. Further, the bottom of the vertical stand 73 is connected with the bottom plate 71 through a rotating shaft 77, an inclination driving cylinder 78 is arranged on the bottom plate 71, the inclination of the vertical stand 73 is adjusted through the inclination driving cylinder 78, and then the pitch angle of the reinforcement cage is adjusted.

[0037] As a preferred mode, further, referring to the accompanying drawings Figure 8 - the accompanying drawings Figure 10The structure of the reinforcement cage installation trolley 6 is as follows: a base shell 61 is provided, wheels matched with the second arc-shaped track 12 are installed on the base shell 61, so as to realize the walking of the reinforcement cage installation trolley along the second arc-shaped track 12; two reinforcement cage grabbing and positioning mechanisms 62 are symmetrically arranged on the base shell 61, and are used for realizing the grabbing and positioning of the reinforcement cage; specifically, the reinforcement cage grabbing and positioning mechanism 62 comprises a longitudinally arranged support frame 621, two sliding seats 622 are slidingly installed on the support frame 621, a grabbing hook 623 is arranged on each sliding seat 622, the grabbing hook 623 is installed on the outer side wall of the sliding seat 622 through a rotating shaft 624 and a rotating shaft connecting lug 6241, a grabbing driving cylinder 625 is arranged between the bottom end of the grabbing hook 623 and the bottom end of the sliding seat 622, the grabbing hook 623 is driven to move by the grabbing driving cylinder 625, so as to realize the grabbing of the reinforcement cage and stably fix the reinforcement cage on the sliding seat 622; further, the upper surface of the sliding seat 622 is inclined, so as to better adapt to the shape of the reinforcement cage and better support the reinforcement cage; a longitudinal movement driving cylinder 626 is arranged on the support frame 621, the longitudinal movement driving cylinder 626 is connected with one of the sliding seats 622, and the two sliding seats 622 are connected through a connecting plate 6221, so that the two sliding seats 622 are driven to synchronously slide along the support frame 621 by the longitudinal movement driving cylinder 626, and then the overall longitudinal position of the reinforcement cage is adjusted when the longitudinal movement driving cylinders 626 of the two reinforcement cage grabbing and positioning mechanisms 62 synchronously move, and the deflection angle of the reinforcement cage is adjusted when the longitudinal movement driving cylinders 626 of the two reinforcement cage grabbing and positioning mechanisms 62 asynchronously move; a lifting driving cylinder 627 is arranged in the base shell 61, the support frame 621 is installed on the top of the lifting driving cylinder 627 through a hinged support 628, the lifting of the support frame 621 is controlled by the lifting driving cylinder 627, and then the overall radial movement position of the reinforcement cage is adjusted when the lifting driving cylinders 627 of the two reinforcement cage grabbing and positioning mechanisms 62 synchronously move (since the reinforcement cage installation trolley walks on the arc-shaped track, the lifting here refers to the adjustment along the radial direction of the tunnel), and the overturning angle of the reinforcement cage is adjusted when the lifting driving cylinders 627 of the two reinforcement cage grabbing and positioning mechanisms 62 asynchronously move; the hinge shaft of the hinged support 628 is arranged perpendicularly to the longitudinal support frame 621, so that the support frame 621 has the freedom of rotating around the hinge shaft, which can be called the pitch freedom, a pitch driving cylinder 629 is arranged between the hinged support 628 and the support frame 621, so as to adjust the pitch angle of the support frame 621, that is, to realize the adjustment of the pitch angle of the reinforcement cage. In summary, the longitudinal movement, deflection, radial movement, overturning and pitch, and the circumferential movement of the reinforcement cage installation trolley 6 along the second arc-shaped track 12 are combined, so as to realize the six-degree-of-freedom adjustment of the reinforcement cage, and the reinforcement cage can be accurately installed to the target position.

[0038] Further, the wheel set comprises a driven wheel set 63 and a driving wheel set 64. The driven wheel set 63 is arranged on the two side walls of the base shell 61, and two sets of driven wheels are arranged on each side wall, each set of driven wheels comprising two driven wheels arranged in an up-down staggered manner, the two driven wheels being respectively located on the upper side and the lower side of the flange of the second arc-shaped track 12, so that the base shell 61 is stably mounted on the second arc-shaped track 12 and cannot be separated from the second arc-shaped track 12. The driving wheel set 64 is arranged inside the base shell and is connected with the driving motor 65 inside the base shell. The driving wheel set 64 is engaged with the teeth on the upper surface of the second arc-shaped track 12, so as to realize the driving of the reinforcement cage mounting trolley 6 to move on the second arc-shaped track 12. Further, a clamping type parking device 66 is arranged on the side wall of the base shell 61. When the reinforcement cage mounting trolley 6 is stopped at a certain position, the clamping type parking device 66 clamps the flange of the second arc-shaped track 12, so that the reinforcement cage mounting trolley 6 is stably parked. Alternatively, in the case where the clamping type parking device 66 is not arranged, a driving motor 65 with good braking function can also be selected, and the reinforcement cage mounting trolley 6 can also be stably stopped at the required position on the second arc-shaped track 12.

[0039] As a preferred mode, further, referring to the accompanying drawings, Figure 11 Two first arc-shaped tracks 11 and two reinforcement cage storage areas 2 are arranged on the trolley body 1. A cage trolley 5 is arranged on each first arc-shaped track 11. A bracket 9 is arranged on each reinforcement cage storage area 2. Each bracket 9 is hoisted by a winch 91 on the trolley body 1. The winch 91 is arranged at a position on the two sides of the reinforcement cage storage area 2. Three longitudinally arranged reinforcement cages 3 are stacked on each bracket 9. Thus, two sets of reinforcement cages 3 (each set comprising three stacked reinforcement cages) can be loaded on one trolley.

[0040] For ease of description, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to describe the relationship of one element or feature to another element or feature shown in the drawings. It should be understood that, in addition to the orientation shown in the drawings, the spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the drawings is inverted, the element described as being "below" other elements or features will be positioned "above" the other elements or features. Therefore, the exemplary term "below" can include both the upper and lower orientations. The device can be positioned in other ways (rotated by 90 degrees or positioned in other orientations), and the spatial relative description used herein can be interpreted accordingly.

[0041] Moreover, relational terms such as "first" and "second" and the like are merely used to distinguish one component from another component with the same name, and do not necessarily require or imply any such actual relationship or order between the components.

[0042] The above has made the exemplary description to the present application, should indicate that, in not departing from the core of the present application, any simple change, modification or other field technicians can not spend the equivalent replacement of creative labor falls into the protection scope of the present application.

Claims

1. A trolley for installing a tunnel roof segment reinforcement cage, characterised in that: The trolley body is provided with a first arc-shaped track and a second arc-shaped track on the top, and a reinforcing cage storage area is arranged below the first arc-shaped track; a hoist block is installed on the first arc-shaped track to provide hoisting and moving functions for the reinforcing cage; a reinforcing cage installation trolley is installed on the second arc-shaped track to grab the reinforcing cage and transport it to a designated installation position on the top surface of the tunnel; a longitudinal moving trolley is arranged on the trolley body to transport the reinforcing cage hoisted by the hoist block to the reinforcing cage installation trolley.

2. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The first arc-shaped track and the second arc-shaped track have the same curvature as the curvature of the top surface of the tunnel, and are arranged in a spaced manner, and the upper surfaces of the first arc-shaped track and the second arc-shaped track are provided with teeth.

3. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The reinforcing cage storage area is located on the outer side of the ventilation pipe.

4. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The longitudinal moving trolley is installed on the longitudinal track at the middle position of the top of the trolley body, and the height of the longitudinal moving trolley is less than the height of the first arc-shaped track.

5. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The reinforcing cage storage area has a bracket for carrying the reinforcing cage in a longitudinal state.

6. The trolley for installing a tunnel top segment reinforcement cage according to claim 5, characterized in that: The bracket of the reinforcing cage storage area is hoisted by a winch on the trolley body.

7. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The main framework of the trolley body includes a lower portal and an upper portal, the middle left area of the upper portal is used to accommodate two parallel ventilation pipes, and the right area of the upper portal serves as the reinforcing cage storage area; a longitudinal track is arranged at the middle position of the top of the upper portal for the longitudinal moving trolley to travel; a step ladder is further arranged on the trolley body for workers to go up and down; a through pipe guide cylinder is arranged at both ends of the trolley body for the ventilation pipe to pass through; the first arc-shaped track is installed on the upper portal, and the second arc-shaped track is installed on the lower portal; the height of the first arc-shaped track is greater than the height of the second arc-shaped track.

8. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The bottom end of the hoisting rope of the hoist block is connected to a hanger, the hanger is arc-shaped, and a plurality of hangers are arranged on the hanger in a spaced manner.

9. The trolley for installing a tunnel top segment reinforcement cage according to claim 1, characterized in that: The longitudinal moving trolley includes a bottom plate provided with traveling wheels at the bottom; a stand is arranged on the bottom plate, and a lifting arm driven by a lifting drive cylinder is arranged on the stand, the lifting arm is used to insert into the bottom of the reinforcing cage to lift the reinforcing cage.

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