CN113833484A - Working device capable of realizing forward and backward sliding of arch arm - Google Patents
Working device capable of realizing forward and backward sliding of arch arm Download PDFInfo
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- CN113833484A CN113833484A CN202111093606.0A CN202111093606A CN113833484A CN 113833484 A CN113833484 A CN 113833484A CN 202111093606 A CN202111093606 A CN 202111093606A CN 113833484 A CN113833484 A CN 113833484A
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- 230000007246 mechanism Effects 0.000 claims abstract description 22
- 230000005641 tunneling Effects 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 19
- 238000001125 extrusion Methods 0.000 claims description 15
- 239000002689 soil Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 6
- 230000003139 buffering effect Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000005507 spraying Methods 0.000 description 3
- 229910000906 Bronze Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000010974 bronze Substances 0.000 description 2
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000003003 spiro group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/12—Devices for removing or hauling away excavated material or spoil; Working or loading platforms
- E21D9/126—Loading devices or installations
- E21D9/128—Loader-conveyors with gathering arms
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a working device capable of realizing fore-and-aft sliding of an arch arm, which comprises a main body of a tunneling machine, wherein a tunneling machine body frame is arranged at the upper end of the main body of the tunneling machine, an arch arm sliding platform is arranged at the upper end of the tunneling machine body frame, and an arch arm mounting frame capable of moving back and forth is arranged at the upper end of the arch arm sliding platform through a gear-rack meshing driving structure; a sliding limiting structure is arranged between the arch arm mounting frame and the arch arm sliding platform; both ends of the arch arm mounting rack are rotatably arranged with one end of the arch arm through the slewing bearing; arch frame arm rotary speed reducers are symmetrically arranged in the rotary support; the arch arm is provided with an arm support pitching mechanism, and the arch arm mounting frame is provided with a rotation limiting mechanism for limiting the rotation of the arch arm. The invention integrates the tunneling function and the supporting function, when the arch arms are required to clamp the arch, the operation fence and the clamping arms of the arch arm frame can reach any position of the section of the roadway through the sliding of the arch arm mounting frame, the rotation of the arch arm and the pitching function of the arch arms, and a convenient position is provided for the roadway to erect the arch.
Description
Technical Field
The invention belongs to the technical field of cantilever type tunnel boring machines, and particularly relates to a working device capable of realizing forward and backward sliding of an arch arm.
Background
The cantilever type tunnel boring machine is widely applied to various tunnel excavation at present, the machine needs to be withdrawn after excavation is finished in the tunnel excavation process, the support operation is carried out by switching to support equipment, certain potential safety hazards exist in the process of withdrawing the machine and entering the field of the support equipment of the boring machine aiming at construction sites with poor surrounding rock grades,
the utility model with the patent application number of 202021937409.3 discloses a single-arm type tunnel boring machine, which comprises a machine body and a cutting mechanism arranged on the machine body, wherein the cutting mechanism is connected to the machine body through a cutting reducer and a cutting motor for driving the cutting mechanism to rotate is arranged on the machine body; the cutting structure comprises a cutting head and a cutting head connecting shaft, the cutting head connecting shaft is inserted into the cutting reducer, and spraying structures are arranged on two sides of the cutting connecting shaft; the spraying mechanism comprises a water distribution ring frame and a swinging type mist dispersing fan arranged behind the water distribution ring frame, and a plurality of inclined water spraying heads are arranged on the water distribution ring frame. When the single-arm tunnel boring machine is used for boring, the liquid fog dust fall is provided, and the single-arm tunnel boring machine and the fan dust fall are linked to improve the dust fall efficiency and optimize the working environment. However, in the tunnel excavation process, the problem that the machine needs to be withdrawn after excavation and is switched to the supporting equipment for supporting operation still exists, and certain potential safety hazards exist.
Therefore, the problem of single tunneling function of the cantilever type tunnel boring machine is very necessary to solve, potential safety hazards caused by grade differences of the retreating main machine and surrounding rocks after tunneling operation is finished can be effectively solved through the method of integrating the supporting function of the tunnel boring machine into the boring machine, and tunnel operation is promoted to be diversified.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides a working device capable of realizing forward and backward sliding of an arch arm, and solves the problem of single digging function of a cantilever type tunnel boring machine.
In order to achieve the purpose, the invention adopts the technical scheme that:
a working device capable of realizing fore-and-aft sliding of an arch arm comprises a main body of a tunneling machine, wherein a tunneling machine body frame is arranged at the upper end of the main body of the tunneling machine, an arch arm sliding platform is arranged at the upper end of the tunneling machine body frame, and an arch arm mounting frame capable of moving back and forth is arranged at the upper end of the arch arm sliding platform through a gear-rack meshing driving structure; a sliding limiting structure is further arranged between the arch arm mounting rack and the arch arm sliding platform and limits the movement of the arch arm mounting rack to be linear movement; both ends of the arch arm mounting rack are rotatably arranged with one end of the arch arm through a slewing bearing; arch arm rotary speed reducers are symmetrically arranged in the rotary support and are used for driving the arch arms to rotate; the arch arm is provided with an arm support pitching mechanism for controlling the arch arm to pitch, and the arch arm mounting frame is provided with a rotation limiting mechanism for limiting the rotation of the arch arm.
According to the invention, the tunneling function and the supporting function are integrated, when the arch frame is required to be clamped by the arch frame arms, the operation fence and the clamping arms of the arch frame can reach any position of the section of the roadway through the sliding of the arch frame arm mounting rack, the rotation of the arch frame arms and the pitching function of the arch frame arms, so that a convenient position is provided for the roadway to erect the arch frame.
The arch arm is connected with an arch arm sliding platform on the heading machine body frame through the arch arm mounting frame, the arch arm sliding platform is driven to move stably through the gear rack meshing driving structure, and the moving direction of the arch arm sliding platform is limited through the sliding limiting structure, so that the moving direction of the arch arm sliding platform is ensured.
The arch arm can rotate on an arch arm sliding platform on the heading machine body, and a rotation limiting mechanism is further arranged to limit rotation of the arch arm and prevent the arch arm from moving.
Furthermore, the gear and rack meshing driving structure comprises a rack, a motor and a gear, the rack is arranged on the upper surface of the arch arm sliding platform along the length direction, the motor is connected with the arch arm sliding platform, the output end of the motor is coaxially connected with the gear through a spline, and the gear is meshed with the rack. The motor is a low-speed large-torque motor. The arch arm mounting base is driven by a low-speed large-torque motor, a gear is assembled below the motor through a spline, and the gear is in meshing transmission with a rack fixed on the arch arm sliding platform, so that the arch arm mounting frame is driven to slide, and the front and back sliding is stable and safe.
Further, the arch arm mounting rack comprises an upper mounting plate and a lower mounting plate, and oblique supporting rods are symmetrically arranged between the upper mounting plate and the lower mounting plate; the motor is arranged in the middle of the upper end face of the lower mounting plate, and the output torque of the motor is 5300N-m. The diagonal bracing pole can play the effect of fixed stay, and through go up the mounting panel down the mounting panel and the setting of diagonal bracing pole three position can for the installation of motor provides the basis.
Furthermore, the sliding limiting structure comprises an adjusting screw, an adjusting cushion block and a base plate, two extrusion parts are symmetrically arranged at the lower end of the arch arm mounting frame, and the arch arm sliding platform is arranged between the two extrusion parts; an embedded groove is formed in the end face, close to the arched arm sliding platform, of the extrusion part, and the arched arm sliding platform is embedded into the embedded groove; the base plates are arranged between the upper surface and the lower surface of the arched arm sliding platform positioned in the embedded groove and the embedded groove, and are used for lubricating and supporting the arched arm sliding platform and the embedded groove; the adjusting cushion blocks are arranged between the sides of the arch arm sliding platform and the embedded grooves, the adjusting screws are transversely screwed with the extrusion parts, and one ends of the adjusting screws are tightly attached to the adjusting cushion blocks.
The sliding limiting structure limits the moving direction of the arch arm sliding platform. The arched arm mounting frame is connected with the arched arm sliding platform through a base plate, and the base plate is made of softer aluminum bronze, so that friction between the arched arm mounting frame and the arched arm sliding platform can be reduced. When the gap between the arch arm mounting frame and the arch arm sliding platform is too large, the gap can be adjusted in a mode of timely replacing the base plate. And the adjusting cushion block is arranged at the same time, the adjusting screw is tightly attached to the adjusting cushion block, and the gap between the arch arm mounting frame and the arch arm sliding platform is adjusted through the adjusting screw, so that the smooth sliding of the arch arm mounting seat is ensured.
Furthermore, the extrusion part is an upper and lower combined type extrusion part and comprises an upper fixed seat with a rectangular longitudinal section and a lower supporting plate with an L-shaped longitudinal section, and the upper fixed seat is fixedly connected with the lower supporting plate through bolts. The fixing seat and the lower supporting plate can be detached through the bolt, and then the base plate is installed.
Furthermore, the rotation limiting structure comprises a limiting pin shaft and a limiting block, the limiting block is fixedly arranged on the upper surface of the arch arm mounting frame, and the limiting block is positioned around the slewing bearing; the limiting block is provided with a first limiting hole in the vertical direction, and the arch frame arm is provided with a second limiting hole in the vertical direction; the limiting pin shaft is sequentially inserted into the second limiting hole and the first limiting hole in order and used for limiting the revolving arch frame arm. When the arch frame arm rotates to the limit position, the arch frame arm and the limit block are fixed through the limit pin shaft.
Further, the arch arm is rotatably connected with one end of the L-shaped bracket through a pin shaft, a first angle adjusting structure is arranged between the arch arm and the L-shaped bracket, and the first angle adjusting structure is used for adjusting an angle between the arch arm and the L-shaped bracket; the other end of the L-shaped bracket is rotatably provided with a manipulator assembly through a manipulator rotary speed reducer, and the manipulator assembly is connected with an operating platform. The manipulator assembly can carry out the centre gripping support to the tunnel founds bow member.
Further, the revolving radius of the arch arm is less than or equal to 1.5m, and the revolving angle of the arch arm ranges from 0 degree to 360 degrees. The rotating radius is not more than 1.5m, the occupied space is small, and the device can be used for arch centering and material transfer in narrow space. The rotation angle of the arch frame arm is 0-360 degrees, so that any position can rotate.
Further, the heading machine body frame is connected with a heading machine cutting head, a heading machine walking part, a heading machine rear support, a heading machine shovel plate and a scraper conveyor; the cutting head of the tunneling machine is used for cutting a tunnel soil layer; the development machine walking part is used for driving the development machine body frame to move; the rear support of the development machine is used for supporting, damping and buffering the development machine body frame; the excavator shovel plate is used for loading cutting materials generated by cutting of the excavator cutting head; the scraper conveyor is used for transferring the cutting materials loaded by the shovel plate.
Further, the use method of the working device capable of realizing forward and backward sliding of the arch arm comprises the following steps:
s1, cutting the tunnel soil layer by the heading machine cutting head, the heading machine walking part, the heading machine rear support, the heading machine shovel plate and the scraper conveyor through the heading machine body, and digging towards the deep position of the tunnel soil layer;
s2, in the process that the heading machine body digs towards the deep tunnel soil layer, the gear and rack meshing driving structure and the sliding limiting structure can drive the arch arm mounting frame to move linearly, and the relative position between the arch arm and the heading machine body frame is adjusted; the arch arm turning speed reducer can drive the arch arm to turn, and changes the relative position of the arch arm mounting frame and the arch arm in the horizontal direction; the arm support pitching mechanism controls the arch support arm to pitch, and the height of the arch support arm is changed in the vertical direction;
and S3, controlling the position of the arch arm by adjusting the gear rack meshing driving structure, the arch arm rotary speed reducer and the arm support pitching mechanism through the heading machine body, and enabling the arch arm to support the excavated tunnel.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the tunneling function and the supporting function are integrated, when the arch frame is required to be clamped by the arch frame arms, the operation fence and the clamping arms of the arch frame can reach any position of the section of the roadway through the sliding of the arch frame arm mounting rack, the rotation of the arch frame arms and the pitching function of the arch frame arms, so that a convenient position is provided for erecting the arch frame in the roadway.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic cross-sectional view taken at A-A of FIG. 1 in accordance with the present invention;
FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic front view of the present invention arch arm transport system;
FIG. 6 is a schematic top view of the present invention arch arm transport system;
FIG. 7 is a schematic view of the structure of FIG. 6 at C-C in accordance with the present invention;
in the figure: 1. a development machine body frame; 2. an arched arm sliding platform; 3. an arch arm mounting bracket; 4. a motor; 5. a slewing bearing; 6. a rack; 7. a gear; 9. a support plate; 10. an arch frame arm; 11. an arch arm turning speed reducer; 12. an adjusting screw; 13. Adjusting the cushion block; 14. a lower base plate; 15. an upper base plate; 16. a limiting pin shaft; 17. a limiting block; 18. a manipulator assembly; 19. An operating platform; 20. a manipulator rotary speed reducer; 21. an L-shaped bracket; 22. a pin shaft; 23. a boom pitch mechanism; 24. A first angle adjustment structure; 25. an upper mounting plate; 26. a lower mounting plate; 27. an oblique supporting rod.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, 2, 3, 4, 5, 6 and 7, a working device capable of realizing forward and backward sliding of an arch arm comprises a main body of a heading machine, wherein a heading machine main body frame 1 is arranged at the upper end of the main body of the heading machine. Further, the heading machine body frame 1 is connected with a heading machine cutting head, a heading machine walking part, a heading machine rear support, a heading machine shovel plate and a scraper conveyor; the cutting head of the tunneling machine is used for cutting a tunnel soil layer; the development machine walking part is used for driving the development machine body frame 1 to move; the rear support of the heading machine is used for supporting, damping and buffering the heading machine body frame 1; the excavator shovel plate is used for loading cutting materials generated by cutting of the excavator cutting head; the scraper conveyor is used for transferring the cutting materials loaded by the shovel plate. In this embodiment, the heading machine traveling unit is provided at the lower end of the heading machine body frame 1.
As shown in fig. 1 and 2, an arch arm sliding platform 2 is fixed at the upper end of the development machine body frame 1 through bolts, and an arch arm mounting frame 3 capable of moving back and forth is arranged at the upper end of the arch arm sliding platform 2 through a gear and rack meshing driving structure; a sliding limiting structure is further arranged between the arch arm mounting rack 3 and the arch arm sliding platform 2, and the sliding limiting structure limits the movement of the arch arm mounting rack 3 to linear movement; the two ends of the arch arm mounting rack 3 are rotatably arranged with one end of an arch arm 10 through a slewing bearing 5; arch arm rotary speed reducers are symmetrically arranged in the slewing bearing 5, the arch arm rotary speed reducers are connected with the slewing bearing 5, and the arch arm rotary speed reducers are used for driving the arch arms 10 to rotate; the arch arm 10 is provided with an arm support pitching mechanism 23 for controlling the arch arm 10 to pitch, and the arch arm mounting frame 3 is provided with a rotation limiting mechanism for limiting the rotation of the arch arm 10. In this embodiment, the boom pitching mechanism 23 is an oil cylinder.
According to the invention, the tunneling function and the supporting function are integrated, when the arch frame is required to be clamped by the arch frame arms, the operation fence and the clamping arms of the arch frame can reach any position of the section of the roadway through the sliding movement of the arch frame arm mounting frame 3, the rotation of the arch frame arms 10 and the pitching function of the arch frame arms 10, so that a convenient position is provided for erecting the arch frame by the roadway.
The arch arm 10 is connected with an arch arm sliding platform 2 on the heading machine body frame 1 through the arch arm mounting frame 3, the arch arm sliding platform 2 is driven to move stably through a gear and rack meshing driving structure, the moving direction of the arch arm sliding platform 2 is limited through a sliding limiting structure, and the moving direction of the arch arm sliding platform 2 is ensured.
The arch arm 10 can rotate on an arch arm sliding platform 2 on the heading machine body, and a rotation limiting mechanism is further arranged for limiting the rotation of the arch arm 10 and avoiding the movement of the arch arm 10.
Further, the gear and rack meshing driving structure comprises a rack 6, a motor 4 and a gear 7, the rack 6 is arranged on the upper surface of the arched arm sliding platform 2 along the length direction, and the rack 6 is fixedly connected with the upper surface of the arched arm sliding platform 2 through a bolt.
The motor 4 is fixedly connected with the arched arm sliding platform 2 through bolts, the output end of the motor 4 is connected with the gear 7 through a spline common shaft, and the gear 7 is meshed with the rack 6. The motor 4 is a low-speed high-torque motor. The arch arm mounting seat is driven by a low-speed large-torque motor, a gear 7 is assembled below the motor 4 through a spline, and the gear 7 is in meshed transmission with a rack 6 fixed on the arch arm sliding platform 2, so that the arch arm mounting frame 3 is driven to slide, and the front and back sliding is stable and safe. In this embodiment, the length of the rack 6 is 5400mm, the module of the rack and the pinion is 16, the rack 6 is engaged with the pinion 7 installed below the motor 4, and the arch arm mounting rack 3 slides back and forth by 5m under the driving of the motor 4.
Further, the arch arm mounting frame 3 comprises an upper mounting plate 25 and a lower mounting plate 26, wherein inclined support rods 27 are symmetrically arranged between the upper mounting plate 25 and the lower mounting plate 26, and the number of the inclined support rods 27 is multiple. As shown in fig. 3, in the present embodiment, the upper mounting plate 25, the single inclined support rod 27, and the lower mounting plate 26 are arranged in a Z shape.
The motor 4 is mounted in the middle of the upper end surface of the lower mounting plate 26, and the output torque 5300N · m of the motor 4 is obtained. The inclined supporting rod 27 can play a role of fixed support, and a foundation can be provided for the installation of the motor 4 through the arrangement of the positions of the upper mounting plate 25, the lower mounting plate 26 and the inclined supporting rod 27.
Furthermore, the sliding limiting structure comprises an adjusting screw 12, an adjusting cushion block 13 and a base plate, two extrusion parts are symmetrically arranged at the lower end of the arch arm mounting frame 3, and the arch arm sliding platform 2 is arranged between the two extrusion parts; an embedded groove is formed in the end face, close to the arched arm sliding platform 2, of the extrusion part, and the arched arm sliding platform 2 is embedded into the embedded groove; the cushion plates are arranged between the upper surface and the lower surface of the arched arm sliding platform 2 positioned in the embedded groove and the embedded groove, and the cushion plates are used for lubricating and supporting the arched arm sliding platform 2 and the embedded groove; be located inside the embedded groove the avris of encircleing arm sliding platform 2 with be equipped with between the embedded groove adjusting pad 13, adjusting screw 12 horizontal spiro union in the portion of extrudeing, and adjusting screw 12's one end with adjusting pad 13 closely laminates. The sliding limiting structure limits the moving direction of the arch arm sliding platform 2. The arched arm mounting frame 3 is connected with the arched arm sliding platform 2 through a base plate, and the base plate is made of softer aluminum bronze, so that friction between the arched arm mounting frame 3 and the arched arm sliding platform 2 can be reduced. When the gap between the arch arm mounting frame 3 and the arch arm sliding platform 2 is too large, the gap can be adjusted by timely replacing the base plate. Meanwhile, the adjusting cushion block 13 is installed, the adjusting screw 12 is tightly attached to the adjusting cushion block 13, the gap between the arch arm installation frame 3 and the arch arm sliding platform 2 is adjusted through the adjusting screw 12, and the arch arm installation seat is guaranteed to slide stably. In this embodiment, as shown in fig. 4, the backing plate includes an upper backing plate 15 and a lower backing plate 14, the upper backing plate 15 is located above the arch arm sliding platform 2, and the lower backing plate 14 is located below the arch arm sliding platform 2.
Furthermore, the extrusion part is an up-down combined extrusion part, and comprises an upper fixed seat with a rectangular longitudinal section and a lower supporting plate 9 with an L-shaped longitudinal section, wherein the upper fixed seat is fixedly connected with the lower supporting plate 9 through bolts. The fixing seat and the lower supporting plate 9 can be detached through the bolts, and then the upper backing plate 15 and the lower backing plate 14 are installed.
Further, as shown in fig. 7, the rotation limiting structure includes a limiting pin 16 and a limiting block 17, the upper surface of the arch arm mounting frame 3 is fixedly provided with the limiting block 17, and the limiting block 17 is located around the rotation support 5; the limiting block 17 is provided with a first limiting hole in the vertical direction, and the arch arm 10 is provided with a second limiting hole in the vertical direction; the limit pin shaft 16 is sequentially inserted into the second limit hole and the first limit hole to limit the revolving arch frame arm 10. When the arch arm 10 is rotated to the limit position, the arch arm 10 and the limit block 17 are fixed by the limit pin 16.
Further, the arch arm 10 is rotatably connected with one end of the L-shaped bracket 21 through a pin 22, and a first angle adjusting structure 24 is arranged between the arch arm 10 and the L-shaped bracket 21, in this embodiment, the first angle adjusting structure 24 is an oil cylinder. The first angle adjusting structure 24 is used for adjusting the angle between the arch arm 10 and the L-shaped bracket 21; the other end of the L-shaped bracket 21 is rotatably provided with a manipulator assembly 18 through a manipulator rotary speed reducer, and the manipulator assembly 18 is connected with an operating platform 19. The manipulator assembly 18 can clamp and support the tunnel vertical arch. In this embodiment, the manipulator assembly 18 is connected to the L-shaped bracket 21 through the manipulator rotation reducer 20 to realize left and right rotation; the operation platform 19 is fixed above the manipulator assembly 18, and the L-shaped bracket 21 is connected with the arch arm 10 through the pin 22, so that an arch arm transportation system is formed.
Further, the revolution radius of the arch arm 10 is less than or equal to 1.5m, and the revolution angle of the arch arm 10 is 0-360 degrees. The rotation radius of the arch arm 10 is not more than 1.5m, the occupied space is small, and the arch arm can be used for arch centering and material transfer in a narrow space. The rotation angle of the arch arm 10 is 0-360 degrees, so that any position can rotate.
The use method of the working device capable of realizing forward and backward sliding of the arch arm comprises the following steps:
s1, cutting the tunnel soil layer by the heading machine cutting head, the heading machine walking part, the heading machine rear support, the heading machine shovel plate and the scraper conveyor through the heading machine body, and digging towards the deep position of the tunnel soil layer;
s2, in the process that the heading machine body digs towards the deep tunnel soil layer, the gear and rack meshing driving structure and the sliding limiting structure can drive the arch arm mounting frame 3 to move linearly, and the relative position between the arch arm 10 and the heading machine body frame 1 is adjusted; the arch arm turning reduction gear 11 can turn the arch arm 10, and changes the relative position of the arch arm mounting frame 3 and the arch arm 10 in the horizontal direction; the arm support pitching mechanism 23 controls the arch arm 10 to pitch, and changes the height of the arch arm 10 in the vertical direction;
and S3, controlling the position of the arch arm 10 by adjusting the gear-rack meshing driving structure, the arch arm rotary speed reducer 11 and the arm support pitching mechanism 23 through the heading machine body, and enabling the arch arm 10 to support the excavated tunnel.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A working device capable of realizing forward and backward sliding of an arch arm is characterized by comprising a main body of a tunneling machine, wherein a tunneling machine body frame is arranged at the upper end of the main body of the tunneling machine, an arch arm sliding platform is arranged at the upper end of the tunneling machine body frame, and an arch arm mounting frame capable of moving back and forth is arranged at the upper end of the arch arm sliding platform through a gear and rack meshing driving structure; a sliding limiting structure is further arranged between the arch arm mounting rack and the arch arm sliding platform and limits the movement of the arch arm mounting rack to be linear movement; both ends of the arch arm mounting rack are rotatably arranged with one end of the arch arm through a slewing bearing; arch support arm rotary speed reducers are symmetrically arranged in the rotary support and are used for driving the arch support arms to rotate; the arch arm is provided with an arm support pitching mechanism for controlling the arch arm to pitch, and the arch arm mounting frame is provided with a rotation limiting mechanism for limiting the rotation of the arch arm.
2. The working device capable of achieving fore-and-aft sliding of the arched arm according to claim 1, wherein the rack-and-pinion engagement driving structure comprises a rack, a motor and a pinion, the rack is arranged on the upper surface of the arched arm sliding platform along the length direction, the motor is connected with the arched arm sliding platform, the output end of the motor is coaxially connected with the pinion through a spline, and the pinion is engaged with the rack.
3. The working device capable of realizing forward and backward sliding of the arch arm according to claim 2, wherein the arch arm mounting rack comprises an upper mounting plate and a lower mounting plate, and oblique support rods are symmetrically arranged between the upper mounting plate and the lower mounting plate; the motor is arranged in the middle of the upper end face of the lower mounting plate, and the output torque of the motor is 5300N-m.
4. The working device capable of realizing forward and backward sliding of the arched arm according to claim 1, wherein the sliding limiting structure comprises an adjusting screw, an adjusting cushion block and a base plate, two squeezing parts are symmetrically arranged at the lower end of the arched arm mounting frame, and the arched arm sliding platform is arranged between the two squeezing parts; an embedded groove is formed in the end face, close to the arched arm sliding platform, of the extrusion part, and the arched arm sliding platform is embedded into the embedded groove; the base plates are arranged between the upper surface and the lower surface of the arched arm sliding platform positioned in the embedded groove and the embedded groove, and the base plates are used for lubricating and supporting the arched arm sliding platform and the embedded groove; the adjusting cushion blocks are arranged between the sides of the arch arm sliding platform and the embedded grooves, the adjusting screws are transversely screwed with the extrusion parts, and one ends of the adjusting screws are tightly attached to the adjusting cushion blocks.
5. The working device capable of realizing forward and backward sliding of an arch arm according to claim 4, wherein the extrusion part is an up-and-down combined extrusion part and comprises an upper fixed seat with a rectangular longitudinal section and a lower supporting plate with an L-shaped longitudinal section, and the upper fixed seat is fixedly connected with the lower supporting plate through bolts.
6. The working device capable of realizing forward and backward sliding of the arched arm according to claim 1, wherein the rotation limiting structure comprises a limiting pin shaft and a limiting block, the limiting block is fixedly arranged on the upper surface of the arched arm mounting frame, and the limiting block is positioned around the rotary support; the limiting block is provided with a first limiting hole in the vertical direction, and the arch arm is provided with a second limiting hole in the vertical direction; the limiting pin shaft is sequentially inserted into the second limiting hole and the first limiting hole in order and used for limiting the revolving arch frame arm.
7. The working device capable of achieving fore-and-aft sliding of the arch arm according to claim 1, wherein the arch arm is rotatably connected with one end of an L-shaped bracket through a pin shaft, and a first angle adjusting structure is arranged between the arch arm and the L-shaped bracket and used for adjusting an angle between the arch arm and the L-shaped bracket; the other end of the L-shaped bracket is rotatably provided with a manipulator assembly through a manipulator rotary speed reducer, and the manipulator assembly is connected with an operating platform.
8. The working device capable of realizing forward and backward sliding of the arch arm according to claim 1, wherein the revolution radius of the arch arm is less than or equal to 1.5m, and the revolution angle of the arch arm is 0-360 °.
9. The working device capable of realizing forward and backward sliding of the arched arm according to claim 1, wherein the heading machine body frame is connected with a heading machine cutting head, a heading machine walking part, a heading machine rear support, a heading machine shovel plate and a scraper conveyor; the cutting head of the tunneling machine is used for cutting a tunnel soil layer; the development machine walking part is used for driving the development machine body frame to move; the rear support of the development machine is used for supporting, damping and buffering the development machine body frame; the excavator shovel plate is used for loading cutting materials generated by cutting of the excavator cutting head; the scraper conveyor is used for transferring the cutting materials loaded by the shovel plate.
10. The working device capable of achieving fore-and-aft movement of the arch arm as claimed in claim 9, wherein the working device capable of achieving fore-and-aft movement of the arch arm is used by the following method:
s1, cutting the tunnel soil layer through the heading machine cutting head, the heading machine walking part, the heading machine rear support, the heading machine shovel plate and the scraper conveyor by the heading machine body, and heading towards the deep position of the tunnel soil layer;
s2, in the process that the heading machine body digs towards the deep tunnel soil layer, the gear and rack meshing driving structure and the sliding limiting structure can drive the arch arm mounting frame to move linearly, and the relative position between the arch arm and the heading machine body frame is adjusted; the arch arm turning speed reducer can drive the arch arm to turn, and changes the relative position of the arch arm mounting frame and the arch arm in the horizontal direction; the arm support pitching mechanism controls the arch support arm to pitch, and the height of the arch support arm is changed in the vertical direction;
and S3, controlling the position of the arch arm by adjusting the gear rack meshing driving structure, the arch arm rotary speed reducer and the arm support pitching mechanism, and enabling the arch arm to support the excavated tunnel.
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| CN202111093606.0A CN113833484B (en) | 2021-09-17 | 2021-09-17 | Working device capable of realizing front-back sliding of arch arm |
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| CN202111093606.0A CN113833484B (en) | 2021-09-17 | 2021-09-17 | Working device capable of realizing front-back sliding of arch arm |
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| CN113833484B (en) | 2024-07-16 |
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