Assembled tunnel spraying maintenance trolley

Abstract

The utility model relates to a kind of assembled tunnel spray maintenance trolley, including two groups of running gear, the top of each group of running gear is detachably connected with first vertical frame, second vertical frame, first platform frame from below to above in turn, second platform frame is detachably connected between two groups of first platform frame, first vertical frame and first platform frame, second platform frame detachably install with inclined strut between, the outside of first vertical frame and second vertical frame is detachably connected with stair module and overhanging platform, detachably connected with the side spray mechanism of tunnel side face water spraying on the overhanging platform of tunnel spray maintenance trolley same side, install a group of upper spray mechanism on each first platform frame Tunnel top water spraying, each first vertical frame is hung with a water tank, and one water pump is installed in the top of each group of running gear.Affirmative effect is: using modular design, and each module is detachably connected, so that the tunnel spray maintenance trolley is convenient to install, detach and transport.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction equipment, and in particular to an assembled tunnel spray curing trolley. Background Technology

[0002] In the concrete pouring stage of tunnel construction, if the weather is hot and dry during construction, and curing is not carried out promptly after pouring, the moisture in the concrete will evaporate rapidly, leading to dehydration. This situation hinders the full hydration of cement particles that have formed a gel, preventing them from transforming into a stable crystalline structure. This results in insufficient internal bonding strength in the concrete, ultimately causing flaking or powdering on the concrete surface. Furthermore, premature moisture loss before the concrete reaches sufficient strength can cause significant shrinkage deformation, leading to drying shrinkage cracks. Therefore, post-concrete curing is crucial.

[0003] Typically, after the tunnel concrete is poured, a tunnel spraying trolley is used to spray and cure the inner walls of the tunnel. However, existing tunnel spraying trolleys are large in size, making installation, disassembly, and transportation difficult, resulting in high relocation costs. Utility Model Content

[0004] The purpose of this utility model is to overcome the above-mentioned problems in the existing technology and provide a modular tunnel spraying maintenance trolley.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A modular tunnel spraying maintenance trolley includes two sets of mirror-symmetrically arranged traveling devices. Each set of traveling devices has a first upright, a second upright, and a first platform frame detachably connected from bottom to top at its top. A second platform frame is detachably connected between the two sets of first platform frames. Diagonal braces are detachably installed between the first upright, the first platform frame, and the second platform frame. A stair module and a cantilever platform are detachably connected to the outer sides of both the first and second uprights. A side spraying mechanism for spraying water onto the tunnel side is detachably connected to the cantilever platform on the same side of the tunnel spraying maintenance trolley. An upper spraying mechanism for spraying water onto the tunnel top is installed on each first platform frame. A water tank is suspended on each first upright. A water pump is installed at the top of each set of traveling devices. The water pump's inlet is connected to the bottom of an adjacent water tank via a water pipe, and the water pump's outlet is connected to the upper spraying mechanism directly above it via a water pipe. The side spraying mechanism and the upper spraying mechanism on the same side of the tunnel spraying maintenance trolley are connected by water pipes.

[0007] The traveling device includes a double-I-beam, a spray table motor drive wheel, and a spray table driven wheel. The spray table motor drive wheel and the spray table driven wheel are respectively installed at the bottom end of the double-I-beam with fasteners. Four parallel and perpendicular first connecting columns are welded to the top of the double-I-beam.

[0008] The first support frame includes four parallel first vertical square tubes and six first horizontal bars. Two parallel first horizontal bars are welded between two adjacent first vertical square tubes. A second connecting post is welded to the top of each first vertical square tube. The bottom of the first vertical square tube is fitted onto the first connecting post, and the bottom of the first vertical square tube is detachably connected to the first connecting post with fasteners.

[0009] The second upright includes four parallel second vertical square tubes and six second horizontal bars. Two parallel second horizontal bars are welded between two adjacent second vertical square tubes. A third connecting post is welded to the top of each second vertical square tube. The bottom of the second vertical square tube is fitted onto the second connecting post, and the bottom of the second vertical square tube is detachably connected to the second connecting post with fasteners.

[0010] The first platform frame includes a rectangular first frame, four third vertical square tubes, four fourth vertical square tubes, and two sets of steps. A perforated mesh plate is welded into the first frame, with the top of the perforated mesh plate flush with the top of the first frame. The four third vertical square tubes are respectively vertically welded to the bottom of the first frame. The third vertical square tubes are fitted onto third connecting columns, and the third vertical square tubes and the third connecting columns are detachably connected by fasteners. The four fourth vertical square tubes are respectively vertically welded to the top of the first frame. The two sets of steps are symmetrically welded between the top of the first frame and the fourth vertical square tubes.

[0011] The second platform frame includes a rectangular second frame, two sets of rectangular third frames, and eight fifth vertical square tubes. The eight fifth vertical square tubes are vertically welded to the top of the second frame, and the fifth vertical square tubes are detachably connected to the adjacent fourth vertical square tubes using fasteners. The third frame is welded to the top of the fifth vertical square tubes. The second frame is welded with perforated mesh plates, the top of which is flush with the top of the second frame and the top of the first frame. The third frame is welded with perforated mesh plates, the top of which is flush with the top of the third frame and the top of the step. Multiple pairs of reinforcing rods are welded between the third frame and the second frame.

[0012] The side spraying mechanism includes two transverse side support rods, an arc-shaped side mounting rod, and a side spraying pipe. The side support rods are detachably connected to the cantilever platform. The centripetal side of the side mounting rod is welded to the end of the side support rod away from the cantilever platform. The side spraying pipe is tied to the centrifugal side of the side mounting rod. A 45° curved nozzle with an outlet facing upward is installed at the top of the centrifugal side of the side spraying pipe. Multiple evenly distributed straight nozzles are also installed on the centrifugal side of the side spraying pipe.

[0013] The upper spraying mechanism includes two upper support rods, an arc-shaped upper mounting rod, and an upper spray pipe. The upper support rods are detachably connected to the first platform frame. The centripetal side of the upper mounting rod is welded to the top of the upper support rod. The upper spray pipe is tied to the centrifugal side of the upper mounting rod. A 45° curved nozzle with its outlet facing downward is installed at the bottom of the centrifugal side of the upper spray pipe. Multiple evenly distributed straight nozzles are also installed on the centrifugal side of the upper spray pipe.

[0014] The cantilever platform includes two transverse cantilever beams and a rectangular fourth frame. The fourth frame is welded between the two cantilever beams. A perforated mesh plate is welded into the fourth frame, and the top of the perforated mesh plate is flush with the top of the fourth frame. A steel wire rope is installed between the cantilever beams and the first platform frame.

[0015] Wherein, the height of the first upright and the height of the second upright are both equal to or less than 3 meters, the height of the first platform frame and the width of the second platform frame are both equal to or less than 3 meters, the width of the side spraying mechanism is less than 3 meters, and the height of the upper spraying mechanism is less than 3 meters.

[0016] The advantages of this utility model are: it adopts a modular design and the modules can be detachably connected, making the tunnel spraying and curing trolley easy to install, disassemble and transport. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a schematic diagram of the tunnel spraying and curing trolley in this utility model in a tunnel;

[0019] Figure 2 This is a side view of the tunnel spraying and curing trolley in this utility model.

[0020] Figure 3 This is a side view of the traveling device in this utility model.

[0021] Figure 4This is a side view of the first upright frame in this utility model.

[0022] Figure 5 This is a side view of the structure of the second upright in this utility model;

[0023] Figure 6 This is a schematic diagram of the longitudinally cut structure of the first platform frame in this utility model;

[0024] Figure 7 This is a schematic diagram of the longitudinally cut structure of the second platform frame in this utility model;

[0025] Figure 8 This is a top view of the cantilever platform in this utility model.

[0026] Figure 9 This is a front view structural schematic diagram of the side spraying mechanism of this utility model;

[0027] Figure 10 This is a front view structural schematic diagram of the upper spraying mechanism in this utility model;

[0028] Figure 11 This is a front view structural diagram of the staircase module in this utility model;

[0029] Figure 12 This is a side view structural schematic diagram of the staircase module in this utility model;

[0030] Figure 13 This is a front view structural diagram of the diagonal brace in this utility model;

[0031] Explanation of the numbers in the diagram: 1. Traveling device; 101. Double-section I-beam; 102. Sprayer table motor drive wheel; 103. Sprayer table driven wheel; 104. First connecting column.

[0032] First upright 2, first vertical cubic tube 201, first horizontal bar 202, second connecting column 203

[0033] Second upright 3, second vertical cubic tube 301, second horizontal bar 302, third connecting column 303

[0034] First platform frame 4, first frame 401, third vertical cubic tube 402, fourth vertical cubic tube 403, step 404, perforated mesh panel 405, first guardrail 406, second guardrail 407.

[0035] Second platform frame 5, second frame 501, third frame 502, fifth vertical cubic tube 503, perforated mesh panel two 504, perforated mesh panel three 505, reinforcing bar 506, third guardrail 507.

[0036] Staircase module 6, square tube keel 601, treads 602, channel steel section 603,

[0037] Cantilever platform 7, cantilever beam 701, fourth frame 702, perforated mesh plate 703, mounting plate 704.

[0038] Side spray mechanism 8, side support rod 801, side mounting rod 802, side spray pipe 803,

[0039] Upper spraying mechanism 9, upper support rod 901, upper mounting rod 902, upper spraying pipe 903,

[0040] Water tank 10, U-shaped hook 1001, water pump 11, diagonal brace 12, 45° curved nozzle 13, straight nozzle 14, steel wire rope 15, tunnel 100, ventilation pipe 200. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0042] like Figures 1 to 13 As shown, a modular tunnel spraying maintenance trolley includes two sets of mirror-symmetrically arranged traveling devices 1. The traveling device 1 includes a double-section I-beam 101, a spraying table motor drive wheel 102, and a spraying table driven wheel 103. The spraying table motor drive wheel 102 and the spraying table driven wheel 103 are respectively installed at the bottom end of the double-section I-beam 101 with fasteners. Four parallel and perpendicular first connecting columns 104 are welded to the top of the double-section I-beam 101.

[0043] Each set of traveling devices 1 has a first upright 2, a second upright 3, and a first platform frame 4 detachably connected from bottom to top at its top. A second platform frame 5 is detachably connected between the two sets of first platform frames 4.

[0044] The first support frame 2 includes four parallel first vertical square tubes 201 and six first horizontal bars 202. Two parallel first horizontal bars 202 are welded between two adjacent first vertical square tubes 201. A second connecting post 203 is welded to the top of each first vertical square tube 201. The bottom of the first vertical square tube 201 is fitted onto the first connecting post 104, and the bottom of the first vertical square tube 201 is detachably connected to the first connecting post 104 with fasteners.

[0045] The second support frame 3 includes four parallel second vertical square tubes 301 and six second horizontal bars 302. Two parallel second horizontal bars 302 are welded between two adjacent second vertical square tubes 301. A third connecting post 303 is welded to the top of each second vertical square tube 301. The bottom of the second vertical square tube 301 is fitted onto the second connecting post 203, and the bottom of the second vertical square tube 301 is detachably connected to the second connecting post 203 with fasteners.

[0046] The first platform frame 4 includes a rectangular first frame 401, four third vertical square tubes 402, four fourth vertical square tubes 403, and two sets of steps 404. A perforated mesh plate 405 is welded into the first frame 401, with the top of the perforated mesh plate 405 flush with the top of the first frame 401. The four third vertical square tubes 402 are vertically welded to the bottom of the first frame 401, and the third vertical square tubes 402 are fitted onto the third connecting column 303, and the third vertical square tubes 402 and the third connecting column 303 are detachably connected by fasteners. The four fourth vertical square tubes 403 are vertically welded to the top of the first frame 401, and the two sets of steps 404 are symmetrically welded between the top of the first frame 401 and the fourth vertical square tubes 403.

[0047] The second platform frame 5 includes a rectangular second frame 501, two sets of rectangular third frames 502, and eight fifth vertical square tubes 503. The eight fifth vertical square tubes 503 are vertically welded to the top of the second frame 501. The fifth vertical square tubes 503 are detachably connected to the adjacent fourth vertical square tubes 403 by fasteners. The third frame 502 is welded to the top of the fifth vertical square tubes 503. The second frame 501 is welded with perforated mesh plates 504, the top of which is flush with the top of the second frame 501 and the top of the first frame 401. The third frame 502 is welded with perforated mesh plates 505, the top of which is flush with the top of the third frame 502 and the top of the step 404. Multiple pairs of reinforcing rods 506 are welded between the third frame 502 and the second frame 501.

[0048] To improve the stability between the first upright 2 and the first platform frame 4 and the second platform frame 5, diagonal braces 12 are detachably installed between the first upright 2 and the first platform frame 4 and the second platform frame 5.

[0049] The installation is carried out using an inverted method. First, the second platform frame 5 is installed between the two sets of first platform frames 4. The second platform frame 5 and the first platform frame 4 are lifted together by a crane. Then, a set of second uprights is installed at the bottom of each of the two sets of first platform frames. Then, diagonal braces 12 are installed at the bottom of the second platform frame 5 and the first platform frame 4. The second platform frame 5, the first platform frame 4, the second uprights, and the diagonal braces 12 are lifted together by a crane. Then, a set of first uprights 2 is installed at the bottom of each of the two sets of second uprights 3, and the bottom of the diagonal braces 12 is connected to the first uprights 2. The second platform frame 5, the first platform frame 4, the second uprights 3, the diagonal braces 12, and the first uprights 2 are lifted together by a crane. Then, a set of traveling devices 1 is installed at the bottom of each set of first uprights.

[0050] During disassembly, a crane is used to lift the second platform frame 5, the first platform frame 4, the second upright frame 3, the diagonal brace 12, the first upright frame 2, and the traveling device 1 together, and the traveling device 1, the first upright frame 2, the diagonal brace 12, the second upright frame 3, and the first platform frame 4 are removed sequentially from bottom to top.

[0051] To improve worker safety while operating on the tunnel spraying and maintenance trolley, a slanted first guardrail 406 is detachably installed on step 404 using M5 hexagonal head bolts. A flat second guardrail 407 is detachably installed on the side of the first frame 401 away from step 404 using M5 hexagonal head bolts. A flat third guardrail 507 is detachably installed at the top of the third frame using M5 hexagonal head bolts. During transportation, to minimize space occupation on the transport vehicle, the first guardrail 406, second guardrail 407, and third guardrail 507 are removed and laid flat for transport.

[0052] The outer sides of both the first frame 2 and the second frame 3 are detachably connected to a stair module 6 and a cantilever platform 7.

[0053] The stair module 6 includes two parallel square tube keels 601 and multiple parallel treads 602. The multiple treads 602 are welded between the two square tube keels 601. Two channel steel sections 603 are welded to the side of one of the square tube keels 601 away from the treads 602. The channel steel sections 603 are hung on the first crossbar 202 or the second crossbar 302.

[0054] The cantilever platform 7 includes two transverse cantilever beams 701 and a rectangular fourth frame 702. The fourth frame 702 is welded between the two cantilever beams 701. A perforated mesh plate 703 is welded into the fourth frame 702, and the top of the perforated mesh plate 703 is flush with the top of the fourth frame 702. A mounting plate 704 is welded to the end of the cantilever beam 701 away from the fourth frame. The mounting plate 704 is detachably connected to the first vertical cubic tube or the second vertical cubic tube using a fastener.

[0055] A steel wire rope 15 with a diameter of 1 cm is installed between the cantilever beam 701 and the first platform frame 4. Cylindrical lifting lugs are welded to the sides of the cantilever beam 701 and the first frame 401, respectively. The two ends of the steel wire rope 15 are bent and fixed with steel wire rope clips to form steel wire rope loops. Each steel wire rope loop is fitted onto a cylindrical lifting lug, and the steel wire rope 15 is tensioned by the cylindrical lifting lugs on the sides of the cantilever beam 701 and the first frame 401.

[0056] A side spraying mechanism 8 for spraying water on the side of the tunnel 100 is detachably connected to the cantilever platform 7 on the same side of the tunnel spraying maintenance trolley. A set of upper spraying mechanisms 9 for spraying water on the top of the tunnel is installed on each first platform frame. An avoidance opening is formed between the side spraying mechanism 8 and the upper spraying mechanism 9 to avoid the ventilation pipe 200 on the inner wall of the tunnel 100.

[0057] The side spraying mechanism 8 includes two transverse side support rods 801, an arc-shaped side mounting rod 802, and a side spray pipe 803. The side support rods 801 are detachably connected to the cantilever platform 7. The centripetal side of the side mounting rod 802 is welded to the end of the side support rod 801 away from the cantilever platform 7. The side spray pipe 803 is tied to the centrifugal side of the side mounting rod 802. A 45° curved nozzle 13 with its outlet facing upward is installed on the top of the centrifugal side of the side spray pipe 803. Multiple evenly distributed straight nozzles 14 are also installed on the centrifugal side of the side spray pipe 803.

[0058] The upper spraying mechanism 9 includes two upper support rods 901, an arc-shaped upper mounting rod 902, and an upper spray pipe 903. The upper support rods 901 are detachably connected to the first platform frame 4. The centripetal side of the upper mounting rod 902 is welded to the top of the upper support rod 901. The upper spray pipe 903 is tied to the centrifugal side of the upper mounting rod 902. A 45° curved nozzle 13 with its outlet facing downward is installed at the bottom of the centrifugal side of the upper spray pipe 903. Multiple evenly distributed straight nozzles 14 are also installed on the centrifugal side of the upper spray pipe. Both the 45° curved nozzles 13 and the straight nozzles 14 spray out conical water mist.

[0059] A water tank 10 is suspended on each first upright 2. Two U-shaped hooks 1001 are fixed to the back of the water tank 10. The U-shaped hooks 1001 are hung on the first horizontal pipe 202. A water pump 11 is installed at the top of each group of traveling devices. The water inlet of the water pump 11 is connected to the bottom of the water tank 10 through a pipe. The water inlet of the water pump 11 is connected to the bottom of the adjacent water tank 10 through a water pipe. The water outlet of the water pump 11 is connected to the upper spraying mechanism 9 located directly above it through a water pipe. That is, the water outlet of the water pump 11 is connected to the upper spraying pipe 903 located directly above it through a water pipe. The side spraying mechanism 8 and the upper spraying mechanism 9 located on the same side of the tunnel spraying and maintenance trolley are connected by water pipes. That is, the side spraying pipe 803 and the upper spraying pipe 903 located on the same side of the tunnel spraying and maintenance trolley are connected by water pipes.

[0060] The heights of the first upright 2 and the second upright 3 are both equal to or less than 3 meters; the height of the first platform frame 4 and the width of the second platform frame 5 are both equal to or less than 3 meters; the width of the side spraying mechanism 8 is less than 3 meters; and the height of the upper spraying mechanism 9 is less than 3 meters. This is to facilitate transportation using a 17.5-meter flatbed truck.

[0061] In this embodiment, the fasteners are M16 hexagonal head bolts and M16 hexagonal nuts that are screwed together.

[0062] In a preferred embodiment, a remote control receiver is installed on the motor drive wheel of the spray table. The signal output terminal of the remote control receiver is connected to the signal input terminal of the motor controller of the motor drive wheel of the spray table. The remote control receiver is connected to a remote control via a wireless signal, thereby using the remote control to remotely control the operation of the motor drive wheel of the spray table.

[0063] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A modular tunnel spray curing trolley, characterized in that: The system includes two sets of mirror-symmetrically arranged traveling devices. Each set of traveling devices has a first upright, a second upright, and a first platform frame detachably connected from bottom to top at its top. A second platform frame is detachably connected between the two sets of first platform frames. Diagonal braces are detachably installed between the first upright and the first and second platform frames. Staircase modules and cantilever platforms are detachably connected to the outer sides of both the first and second uprights. A side spraying mechanism for spraying water onto the tunnel side is detachably connected to the cantilever platform on the same side as the tunnel spraying and maintenance trolley. An upper spraying mechanism for spraying water onto the tunnel top is installed on each first platform frame. A water tank is suspended on each first upright. A water pump is installed at the top of each set of traveling devices. The water pump's inlet is connected to the bottom of the adjacent water tank via a water pipe, and the water pump's outlet is connected to the upper spraying mechanism directly above it via a water pipe. The side spraying mechanism and the upper spraying mechanism on the same side as the tunnel spraying and maintenance trolley are connected by water pipes.

2. The tunnel spray curing trolley according to claim 1, characterized in that: The traveling device includes a double-section I-beam, a spray table motor drive wheel, and a spray table driven wheel. The spray table motor drive wheel and the spray table driven wheel are respectively installed at the bottom end of the double-section I-beam with fasteners. Four parallel and perpendicular first connecting columns are welded to the top of the double-section I-beam.

3. The tunnel spraying and curing trolley according to claim 2, characterized in that: The first support frame includes four parallel first vertical square tubes and six first horizontal bars. Two parallel first horizontal bars are welded between two adjacent first vertical square tubes. A second connecting post is welded to the top of each first vertical square tube. The bottom of the first vertical square tube is fitted onto the first connecting post, and the bottom of the first vertical square tube is detachably connected to the first connecting post with fasteners.

4. The tunnel spray curing trolley according to claim 3, characterized in that: The second upright includes four parallel second vertical square tubes and six second horizontal bars. Two parallel second horizontal bars are welded between two adjacent second vertical square tubes. A third connecting post is welded to the top of each second vertical square tube. The bottom of the second vertical square tube is fitted onto the second connecting post, and the bottom of the second vertical square tube is detachably connected to the second connecting post with fasteners.

5. The tunnel spray curing trolley according to claim 4, characterized in that: The first platform frame includes a rectangular first frame, four third vertical square tubes, four fourth vertical square tubes, and two sets of steps. A perforated mesh plate is welded into the first frame, with the top of the perforated mesh plate flush with the top of the first frame. The four third vertical square tubes are respectively vertically welded to the bottom of the first frame. The third vertical square tubes are fitted onto third connecting columns, and the third vertical square tubes and the third connecting columns are detachably connected by fasteners. The four fourth vertical square tubes are respectively vertically welded to the top of the first frame. The two sets of steps are symmetrically welded between the top of the first frame and the fourth vertical square tubes.

6. The tunnel spray curing trolley according to claim 5, characterized in that: The second platform frame includes a rectangular second frame, two sets of rectangular third frames, and eight fifth vertical square tubes. The eight fifth vertical square tubes are vertically welded to the top of the second frame, and the fifth vertical square tubes are detachably connected to the adjacent fourth vertical square tubes using fasteners. The third frame is welded to the top of the fifth vertical square tubes. The second frame is welded with perforated mesh plates, the top of which is flush with the top of the second frame and the top of the first frame. The third frame is welded with perforated mesh plates, the top of which is flush with the top of the third frame and the top of the step. Multiple pairs of reinforcing rods are welded between the third frame and the second frame.

7. The tunnel spray curing trolley according to claim 1, characterized in that: The side spraying mechanism includes two transverse side support rods, an arc-shaped side mounting rod, and a side spray pipe. The side support rods are detachably connected to the cantilever platform. The centripetal side of the side mounting rod is welded to the end of the side support rod away from the cantilever platform. The side spray pipe is tied to the centrifugal side of the side mounting rod. A 45° curved nozzle with an outlet facing upward is installed at the top of the centrifugal side of the side spray pipe. Multiple evenly distributed straight nozzles are also installed on the centrifugal side of the side spray pipe.

8. The tunnel spray curing trolley according to claim 1, characterized in that: The upper spraying mechanism includes two upper support rods, an arc-shaped upper mounting rod, and an upper spray pipe. The upper support rods are detachably connected to the first platform frame. The centripetal side of the upper mounting rod is welded to the top of the upper support rod. The upper spray pipe is tied to the centrifugal side of the upper mounting rod. A 45° curved nozzle with an outlet facing downwards is installed at the bottom of the centrifugal side of the upper spray pipe. Multiple evenly distributed straight nozzles are also installed on the centrifugal side of the upper spray pipe.

9. The tunnel spray curing trolley according to claim 1, characterized in that: The cantilever platform includes two transverse cantilever beams and a rectangular fourth frame. The fourth frame is welded between the two cantilever beams. A perforated mesh plate is welded into the fourth frame, and the top of the perforated mesh plate is flush with the top of the fourth frame. A steel wire rope is installed between the cantilever beams and the first platform frame.

10. The tunnel spraying and curing trolley according to claim 1, characterized in that: The height of the first upright and the height of the second upright are both equal to or less than 3 meters, the height of the first platform frame and the width of the second platform frame are both equal to or less than 3 meters, the width of the side spraying mechanism is less than 3 meters, and the height of the upper spraying mechanism is less than 3 meters.

Images