Movable multifunctional inverted arch trestle

Abstract

The invention belongs to the technical field of tunnel construction equipment, and particularly relates to a movable multifunctional inverted arch trestle which comprises a movable trestle body, two rock drilling arm assemblies, a reinforcing mesh hoisting mechanism and a slag sucking and discharging mechanism. The left rock drilling arm and the right rock drilling arm are symmetrically arranged on the two sides of the movable trestle body. A plurality of independent procedures are integrated on one device, the procedure conversion time and the device dispatching time are shortened, continuous operation of the process of drilling, slag removal and hoisting is achieved, the construction efficiency is greatly improved, the mechanical arm is used for replacing manual operation to conduct drilling, slag removal and heavy object hoisting operation on the dangerous face, and the labor intensity of workers is lowered. And the labor intensity of workers and the safety accident risk are greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of tunnel construction equipment, and particularly relates to a movable multi-functional inverted arch trestle. BACKGROUND

[0002] During the tunnel excavation process, the inverted arch excavation usually adopts the artificial drilling mode, and after blasting, the virtual slag is cleaned, and then the installation of the steel mesh is performed by the artificial cooperation with the excavator. The construction process has many defects such as low safety factor, high labor intensity, and low construction efficiency, and cannot meet the demand of modern tunnel construction for high efficiency, safety, and low labor intensity. SUMMARY

[0003] The purpose of the present application is to provide a movable multi-functional inverted arch trestle device which integrates the traditional trestle, inverted arch excavation, virtual slag cleaning, and steel mesh support functions into one, and solves the problems of low safety factor, high labor intensity, and low efficiency in the existing inverted arch construction.

[0004] The technical scheme adopted by the present application is as follows: The movable multi-functional inverted arch trestle comprises a movable trestle body, two rock drilling arm assemblies, a set of steel mesh hoisting mechanism, and a set of slag suction and discharge mechanism, the two rock drilling arm assemblies are a left rock drilling arm and a right rock drilling arm, and the left rock drilling arm and the right rock drilling arm are symmetrically arranged on the two sides of the movable trestle body; The slag suction and discharge mechanism is arranged at the middle position below the movable trestle body, and the steel mesh hoisting device is assembled on the longitudinal beams on the two sides of the movable trestle body; Each rock drilling arm assembly comprises a rotary speed reducer four, a rock drilling telescopic arm, a rock drilling arm seat, an air compressor, and a rock drilling beam, one end of the rock drilling telescopic arm is fixedly installed on the movable trestle body through the rock drilling arm seat; The slag suction and discharge mechanism comprises a rotary speed reducer one, the rotary speed reducer one is fixedly arranged on the movable trestle body through a flange seat, an output shaft of the rotary speed reducer one is fixedly connected with one end of a slag suction and discharge arm seat, the other end of the slag suction and discharge arm seat is hingedly connected with one end of a slag suction and discharge telescopic arm through a hinged seat, and the slag suction and discharge arm seat and the slag suction and discharge telescopic arm are hingedly connected with the two ends of a variable amplitude oil cylinder one through the hinged seat respectively; The steel mesh hoisting mechanism comprises a portal frame, a sliding frame, and a lifting device.

[0005] Further, the rock drilling arm seat is configured with the air compressor, the other end of the rock drilling telescopic arm is fixedly provided with the rotary speed reducer four, and an output shaft of the rotary speed reducer four is fixedly connected with the rock drilling beam.

[0006] Furthermore, a rotary reducer is fixedly installed at the end of the slag suction and discharge telescopic arm. The output shaft of the rotary reducer is fixedly installed with a mounting base, and the mounting base is simultaneously hinged to one end of the luffing cylinder and the wire brush cleaning device via a hinged seat. The other end of the wire brush cleaning device is hinged to one end of the luffing cylinder via a hinged seat.

[0007] Furthermore, the slag suction and discharge telescopic arm is also hinged to one end of the luffing cylinder three via a hinge seat, and the other end of the luffing cylinder three is hinged to the base of the rotary reducer three via a hinge seat. The output shaft of the rotary reducer three is fixedly equipped with a high-pressure negative suction device.

[0008] Furthermore, the gantry frame is fixed on the longitudinal beams on both sides of the mobile trestle body, the slide is mounted on the gantry frame and equipped with rollers, and the slide can move horizontally along the gantry frame. The lifting device is mounted on the slide and equipped with rollers, and the lifting device can move horizontally along the slide.

[0009] Furthermore, the mobile trestle body is provided with two rotatable bridge decks in the middle. The opposite ends of the two rotatable bridge decks are rotatably connected to the bridge of the mobile trestle body through pins. Each rotatable bridge deck is also hinged to the bridge of the mobile trestle body through a hinge seat and the two ends of the hydraulic cylinder. The rotatable bridge deck can switch between a horizontal state and a vertical state. The horizontal state is for construction vehicles to pass through, and the vertical state is for reserving space for the lowering of the steel mesh.

[0010] The technical effects achieved by this invention are as follows: 1. Highly integrated functions, continuous and efficient construction: By integrating multiple independent processes into one piece of equipment, the time for process switching and equipment dispatch is reduced, and continuous operation of the "drilling-cleaning-hoisting" process is realized, which greatly improves construction efficiency.

[0011] 2. High degree of mechanization and good safety: The use of robotic arms to replace manual labor in drilling, slag removal and heavy lifting operations in dangerous areas greatly reduces the labor intensity of workers and the risk of safety accidents.

[0012] 3. Thorough cleaning and high construction quality: Mechanical wire brush cleaning and high-pressure negative suction are carried out simultaneously, which can effectively remove small-area loose debris and water accumulation, ensuring the cleanliness of the invert arch base, providing a good foundation for subsequent steel mesh laying and concrete pouring, and ensuring construction quality.

[0013] 4. Rational spatial layout with no interference between modules: The functional modules are scientifically laid out, with the rock drilling mechanism on both sides, the slag removal mechanism in the lower middle, and the hoisting mechanism at the top. The working spaces do not interfere with each other, and the flip-over bridge deck design cleverly solves the spatial conflict between passage and hoisting.

[0014] 5. Strong adaptability, wide application: the integrated device is particularly suitable for the inverted arch construction of various tunnel projects such as railway, highway, water conservancy, national defense and the like which have high requirements on construction safety, efficiency and quality. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a first perspective view of the tunnel interior to which the present application is applied; Figure 2 is a second perspective view of the tunnel interior to which the present application is applied; Figure 3 is a structural schematic view of a reinforcing mesh hoisting mechanism in the present application; Figure 4 is a structural schematic view of a rock drilling arm in the present application; Figure 5 is a structural schematic view of a slag suction and discharge mechanism in the present application; Figure 6 is a structural schematic view of a reversible bridge deck in the present application. Figure 7 is an enlarged structural schematic view of position A in the present application. Figure 2

[0016] In the drawings, the components represented by the respective reference numerals are listed as follows: 1, mobile stack bridge body; 2, rock drilling arm assembly; 21, rotary speed reducer four; 22, rock drilling telescopic arm; 23, rock drilling arm seat; 24, air compressor; 25, rock drilling beam; 3, reinforcing mesh hoisting mechanism; 31, gantry; 32, sliding frame; 33, lifting device; 4, slag suction and discharge mechanism; 41, rotary speed reducer one; 42, slag suction and discharge arm seat; 43, amplitude varying oil cylinder one; 44, slag suction and discharge telescopic arm; 45, amplitude varying oil cylinder two; 46, steel wire brush cleaning device; 47, rotary speed reducer two; 48, amplitude varying oil cylinder three; 49, rotary speed reducer three; 410, high-pressure negative suction equipment; 5, reversible bridge deck. DETAILED DESCRIPTION

[0017] In order to make the purpose and advantages of the present application more clear and explicit, the present application is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the present application, and does not strictly limit the protection scope of the specific request of the present application.

[0018] As shown in Figures 1-7 , the movable multi-functional inverted arch stack bridge comprises a mobile stack bridge body 1, two rock drilling arm assemblies 2, a reinforcing mesh hoisting mechanism 3 and a slag suction and discharge mechanism 4, the two rock drilling arm assemblies 2 are respectively a left rock drilling arm and a right rock drilling arm, and the left rock drilling arm and the right rock drilling arm are symmetrically arranged at the two sides of the mobile stack bridge body 1; ​The suction and discharge mechanism 4 is arranged at the middle position below the movable trestle body 1, and the reinforcement net hoisting device is arranged on the longitudinal beams on both sides of the movable trestle body 1. Each rock drilling arm assembly 2 comprises a rotary speed reducer four 21, a rock drilling telescopic arm 22, a rock drilling arm base 23, an air compressor 24 and a rock drilling beam 25. The rock drilling telescopic arm 22 is fixed at one end on the movable trestle body 1 through the rock drilling arm base 23. In the rock drilling operation, after the blast hole position is determined according to the drilling and blasting design drawing, the air compressor 24 is started through the electric control system, and the extension length of the rock drilling telescopic arm 22 and the rotation angle of the rotary speed reducer four 21 are adjusted, so that the rock drilling machine on the rock drilling beam 25 is aligned with the blast hole position, the rock drilling machine is started to perform the drilling operation, and after the drilling is completed, the components are operated in reverse to restore the rock drilling arm assembly 2 to the initial position, so as to avoid affecting the subsequent process. The suction and discharge mechanism 4 comprises a rotary speed reducer one 41, which is fixedly arranged on the movable trestle body 1 through a flange base. The output shaft of the rotary speed reducer one 41 is fixedly connected with one end of a suction and discharge arm base 42. The other end of the suction and discharge arm base 42 is hingedly connected with one end of a suction and discharge telescopic arm 44 through a hinged base. The suction and discharge arm base 42 and the suction and discharge telescopic arm 44 are hingedly connected with both ends of a variable amplitude oil cylinder one 43 through the hinged base. In the suction and discharge operation, after the blasting is completed, the large-scale residue is first removed by the excavator, and then the suction and discharge mechanism 4 is started. The rotation angle of the suction and discharge arm base 42 is adjusted through the rotary speed reducer one 41, the pitch angle of the suction and discharge telescopic arm 44 is adjusted through the variable amplitude oil cylinder one 43, the telescopic arm is extended to the operation area, the steel wire brush cleaning device 46 is started, the cleaning disc angle is adjusted through the variable amplitude oil cylinder two 45, the small-range residual residue at the arch bottom is cleaned, and at the same time, the high-pressure negative suction equipment 410 is started, the suction angle is adjusted through the rotary speed reducer three 49, and the generated residue and accumulated water are synchronously sucked and cleaned until there is no residue and no accumulated water at the arch bottom. The reinforcement net hoisting mechanism 3 comprises a portal frame 31, a sliding frame 32 and a lifting device 33.

[0019] The air compressor 24 is arranged on the rock drilling arm base 23, and the air compressor 24, a hydraulic pump valve and an electric control cabinet can be integrated on the rock drilling arm base 23 in the actual operation to provide power and control for the rock drilling. The other end of the rock drilling telescopic arm 22 is fixedly provided with the rotary speed reducer four 21, and the output shaft of the rotary speed reducer four 21 is fixedly connected with the rock drilling beam 25.

[0020] The end of the suction and discharge telescopic arm 44 is fixedly provided with a slewing reducer II 47, the output shaft of the slewing reducer II 47 is fixedly provided with a mounting seat, and the mounting seat is hingedly connected with one end of the luffing cylinder II 45 and one end of the steel wire brush cleaning device 46 through a hinging seat, the other end of the steel wire brush cleaning device 46 is hingedly connected with one end of the luffing cylinder II 45 through a hinging seat, the steel wire brush cleaning device 46 comprises a steel wire brush disc and a driving motor for driving the steel wire brush disc to rotate, in operation, the orientation of the mounting seat, the luffing cylinder II 45 and the steel wire brush cleaning device 46 can be adjusted through the slewing reducer II 47, then the steel wire brush disc can be driven to rotate by the driving motor to perform cleaning operation by using the high-speed rotating steel wire brush disc.

[0021] The suction and discharge telescopic arm 44 is also hingedly connected with one end of a luffing cylinder III 48 through a hinging seat, the other end of the luffing cylinder III 48 is hingedly connected with the housing of a slewing reducer III 49 through a hinging seat, and the output shaft of the slewing reducer III 49 is fixedly provided with a high-pressure negative suction device 410.

[0022] The portal frame 31 is fixed on the longitudinal beams on both sides of the movable trestle body 1, the sliding frame 32 is assembled on the portal frame 31 and is provided with rollers, and the sliding frame 32 can translate along the portal frame 31, the lifting device 33 is assembled on the sliding frame 32 and is provided with rollers, and the lifting device 33 can translate along the sliding frame 32, when the reinforcement mesh is hoisted, the loader transports the reinforcement mesh to below the portal frame reinforcement mesh hoisting mechanism 3, the sliding frame 32 is controlled to translate forward and backward, and the lifting device 33 is controlled to translate left and right through an electric control system, so that the lifting hook is aligned with the lifting point of the reinforcement mesh, the reinforcement mesh is lifted up (the lifting height is greater than or equal to 2 m) by starting the lifting device 33, then the reversible deck 5 is controlled to be turned to the vertical state, the reinforcement mesh is transported to the installation position below the trestle through the coordinated movement of the sliding frame 32 and the lifting device 33, is slowly lowered to the specified height, and is adjusted and fixed in position by workers, after the hoisting operation is completed, the deck returns to the horizontal state.

[0023] Two reversible decks 5 are arranged in the middle of the movable trestle body 1, the opposite ends of the two reversible decks 5 are rotatably connected with the bridge of the movable trestle body 1 through pin shafts, the reversible decks 5 are also hingedly connected with the two ends of the oil cylinder through hinging seats between each reversible deck 5 and the bridge of the movable trestle body 1, and the reversible decks 5 can be switched between the horizontal state and the vertical state, the horizontal state is for the passage of construction vehicles, and the vertical state reserves space for the lowering of the reinforcement mesh, under normal working conditions, the deck remains horizontal to ensure the passage of construction vehicles, when the reinforcement mesh needs to be hoisted, the reversible deck 5 is turned up to the vertical state by a driving mechanism, forming an operating window that penetrates up and down in the middle of the trestle, and the reversible deck 5 rotates along the pin shaft through the extension and retraction of the oil cylinder when it is turned.

[0024] Construction process flow: Positioning and drilling: the device drives to the inverted arch working section, the rock drilling arm assemblies 2 on both sides are unfolded according to the hole design, the rock drilling telescopic arms 22 are extended, the rock drilling beam 25 posture is adjusted through the slewing reducer four 21, the inverted arch working surface is orderly drilled, after the drilling is completed, each arm is retracted to the driving state; Blasting and initial cleaning: workers load and blast, after blasting, large pieces of slag can be preliminarily cleaned by a conventional excavator; Fine slag cleaning: the suction and discharge mechanism 4 is operated, the suction and discharge telescopic arm 44 is turned to the working area by the slewing reducer one 41, the steel wire brush cleaning device 46 is sent to the inverted arch bottom surface through the luffing cylinder one 43, the luffing cylinder two 45, the luffing cylinder three 48 and the suction and discharge telescopic arm 44, the steel wire brush cleaning device 46 and the high-pressure negative suction equipment 410 are started, the suction and discharge telescopic arm 44 moves along the planned path, the steel wire brush cleaning device 46 sweeps the virtual slag, and the negative suction equipment simultaneously sucks away the slag dust and accumulated water until the base is clean; Rebar hoisting: the reversible bridge deck 5 is vertically opened, the loader transports the prefabricated rebar to the gantry crane area under the trestle, the rebar operation hoisting mechanism moves the sliding frame 32 and the lifting device 33 to align the lifting hook with the rebar, hoists the rebar, and then cooperates with the sliding frame 32 and the lifting device 33 to lower the rebar to the inverted arch area under the trestle through the window in the middle of the trestle, and workers assist in positioning and installing; Resetting and subsequent procedures: after hoisting, the reversible bridge deck is restored to be horizontal, the device can move forward to the next working cycle section, and standard procedures such as formwork installation and concrete pouring are subsequently performed.

[0025] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled persons in the art, several improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be considered as the protection scope of the present application. Structures, devices and operation methods not specifically described and explained in the present application, such as without special description and limitation, are implemented according to conventional means in the art.

Claims

1. A movable multi-functional inverted arch trestle, comprising a movable trestle body (1), two rock drilling arm assemblies (2), a steel mesh hoisting mechanism (3), and a slag suction and discharge mechanism (4), characterized in that: The two rock drilling arm assemblies (2) are the left rock drilling arm and the right rock drilling arm, respectively, and the left rock drilling arm and the right rock drilling arm are symmetrically arranged on both sides of the mobile trestle body (1). The slag suction and discharge mechanism (4) is arranged in the middle position below the mobile trestle body (1), and the steel mesh hoisting equipment is assembled on the longitudinal beams on both sides of the mobile trestle body (1). Each of the rock drilling arm assemblies (2) includes a rotary reducer (21), a rock drilling telescopic arm (22), a rock drilling arm base (23), an air compressor (24), and a rock drilling beam (25). One end of the rock drilling telescopic arm (22) is fixed to the mobile trestle body (1) through the rock drilling arm base (23). The slag suction and discharge mechanism (4) includes a rotary reducer (41), which is fixedly mounted on the mobile trestle body (1) via a flange seat. The output shaft of the rotary reducer (41) is fixedly connected to one end of the slag suction and discharge arm seat (42). The other end of the slag suction and discharge arm seat (42) is hinged to one end of the slag suction and discharge telescopic arm (44) via a hinge seat. The slag suction and discharge arm seat (42) and the slag suction and discharge telescopic arm (44) are respectively hinged to both ends of the variable amplitude cylinder (43) via hinge seats. The steel mesh hoisting mechanism (3) includes a gantry (31), a slide (32), and a hoisting device (33).

2. The movable multi-functional arch bridge according to claim 1, characterized in that: An air compressor (24) is mounted on the rock drilling arm base (23), and a rotary reducer (21) is fixedly mounted on the other end of the rock drilling telescopic arm (22). The output shaft of the rotary reducer (21) is fixedly connected to the rock drilling beam (25).

3. The movable multi-functional arch bridge according to claim 1, characterized in that: The end of the slag suction and discharge telescopic arm (44) is fixedly equipped with a rotary reducer (47).

4. The movable multi-functional arch bridge according to claim 3, characterized in that: The output shaft of the rotary reducer (47) is fixedly provided with a mounting base, and the mounting base is simultaneously hinged to one end of the variable amplitude cylinder (45) and the wire brush cleaning device (46) through a hinged joint.

5. The movable multi-functional arch bridge according to claim 4, characterized in that: The other end of the wire brush cleaning device (46) is hinged to one end of the variable amplitude cylinder (45) via a hinge seat.

6. The movable multi-functional arch bridge according to claim 3, characterized in that: The slag suction and discharge telescopic arm (44) is also hinged to one end of the variable amplitude cylinder (48) via a hinge seat.

7. The movable multi-functional arch bridge according to claim 6, characterized in that: The other end of the variable amplitude cylinder three (48) is hinged to the base of the rotary reducer three (49) via a hinge seat. The output shaft of the rotary reducer three (49) is fixedly equipped with a high-pressure negative suction device (410).

8. The movable multi-functional arch bridge according to claim 1, characterized in that: The gantry (31) is fixed on the longitudinal beams on both sides of the mobile trestle body (1). The slide (32) is mounted on the gantry (31) and equipped with rollers. The slide (32) can move along the gantry (31).

9. The movable multi-functional arch bridge according to claim 1, characterized in that: The lifting device (33) is mounted on the carriage (32) and equipped with rollers, and the lifting device (33) can be moved along the carriage (32).

10. The movable multi-functional arch bridge according to claim 1, characterized in that: The mobile trestle body (1) has two reversible bridge decks (5) in the middle. The opposite ends of the two reversible bridge decks (5) are rotatably connected to the bridge of the mobile trestle body (1) through pins. Each reversible bridge deck (5) is also hinged to the bridge of the mobile trestle body (1) through a hinge seat and the two ends of the hydraulic cylinder. The reversible bridge deck (5) can switch between a horizontal state and a vertical state. The horizontal state is for construction vehicles to pass through, and the vertical state is for reserving space for the lowering of the steel mesh.

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