CN116557007B - Tunnel arch frame installation device - Google Patents
Tunnel arch frame installation device Download PDFInfo
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- CN116557007B CN116557007B CN202310820211.9A CN202310820211A CN116557007B CN 116557007 B CN116557007 B CN 116557007B CN 202310820211 A CN202310820211 A CN 202310820211A CN 116557007 B CN116557007 B CN 116557007B
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- 238000009434 installation Methods 0.000 title abstract description 37
- 230000007246 mechanism Effects 0.000 claims description 33
- 230000000712 assembly Effects 0.000 claims description 7
- 238000000429 assembly Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 230000009471 action Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 238000011900 installation process Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Classifications
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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
- E21D11/40—Devices or apparatus specially adapted for handling or placing units of linings or supporting units for tunnels or galleries
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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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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The application discloses a tunnel arch frame installation device, and relates to the technical field of tunnel construction equipment; the device comprises a chassis truck, wherein a first linear driver is arranged, and one end of the first linear driver is hinged with a chassis truck body; one end of the vertical frame is hinged with the chassis vehicle, and the other end of the first linear driver is hinged with the middle part of the vertical frame; the side display driver is arranged on the vertical frame; the middle part of the top arch bracket is fixedly connected with the other end of the vertical frame; one end of the left arch support is hinged with the left end of the top arch support; one end of the left display rack is hinged with the other end of the left arch support, and the other end of the left display rack is hinged with the side display driver; one end of the right arch support is hinged with the right end of the top arch support; one end of the right display rack is hinged with the other end of the right arch support, and the other end of the right display rack is hinged with the side display driver; the side display driver can drive the left display rack and the right display rack to fold towards the vertical rack. The application can reduce the labor intensity of arch frame installation.
Description
Technical Field
The application relates to the technical field of tunnel construction equipment, in particular to a tunnel arch frame installation device.
Background
In tunnel construction, when encountering weak rock stratum, need to install the bow member and cooperate the reinforcing bar net to spray concrete and carry out the reinforcing support to improve the stability of country rock, prevent later stage slump. In the prior art, an arch frame for supporting a tunnel is generally formed by bending I-steel or H-steel. Because of the large cross section of the tunnel, the arch frame is usually split into a plurality of arch segments for production, and is assembled in the tunnel on site when support is needed. The rack is required to be erected on site in the assembling process, jacking and butt joint are carried out for multiple times, then the support frame is removed, and the labor intensity of installation is high.
Disclosure of Invention
Aiming at the technical problem of high labor intensity of the installation of the existing tunnel arch; the application provides a tunnel arch frame installation device which can automatically support two side arches and a top arch to an installation station through a bracket after an arch section is assembled into the two side arches and the top arch on the ground, so that the two side arches and the top arch are connected conveniently, and the labor intensity of arch frame installation is reduced.
The application is realized by the following technical scheme:
the application provides a tunnel arch installing device, which comprises: the chassis truck is provided with a first linear driver, and one end of the first linear driver is hinged with the chassis truck body; one end of the vertical frame is hinged with the chassis vehicle, and the other end of the first linear driver is hinged with the middle part of the vertical frame; the side display driver is arranged on the vertical frame; the middle part of the top arch bracket is fixedly connected with the other end of the vertical frame; one end of the left arch support is hinged with the left end of the top arch support; one end of the left display rack is hinged with the other end of the left arch support, and the other end of the left display rack is hinged with the side display driver; one end of the right arch support is hinged with the right end of the top arch support; one end of the right display rack is hinged with the other end of the right arch support, and the other end of the right display rack is hinged with the side display driver; the top arch support, the left arch support and the right arch support are respectively provided with a plurality of clamping assemblies, and the clamping assemblies can clamp the arch segments corresponding to the arches; the side display driver can drive the left display rack and the right display rack to be folded towards the vertical rack, and one ends of the left arch support and the right arch support, which are far away from the top arch support, can be inserted into the side wall of the vertical rack.
According to the tunnel arch frame installation device, the vertical frame and the first linear driver are hinged to the chassis, one end of the first linear driver is hinged to the vertical frame, the vertical frame can be vertically arranged on the chassis by means of extension of the first linear driver, the vertical frame is horizontally arranged on the chassis by means of contraction of the first linear driver, the side expanding driver is arranged on the vertical frame, the middle part of the top arch support is hinged to the top end of the vertical frame, one end of the left arch support is hinged to the left end of the top arch support, one end of the left expanding frame is hinged to the other end of the left arch support, the other end of the left expanding frame is hinged to the side expanding driver, one end of the right arch support is hinged to the right end of the top arch support, one end of the right expanding frame is hinged to the other end of the right arch support, and the other end of the right expanding frame is hinged to the side expanding driver, so that the left expanding frame and the right expanding frame are driven to be folded or unfolded towards the vertical frame by means of actions of the side expanding driver; simultaneously, a plurality of clamping assemblies are arranged on the top arch support, the left arch support and the right arch support, and the arch segments corresponding to the arches can be clamped on the corresponding supports.
When the tunnel arch is installed, the vertical frame is horizontally placed on the chassis vehicle through shrinkage of the first linear driver; through the action of side exhibition driver for left side encircles support, left exhibition frame, right side encircles support and right exhibition frame and draws in on the chassis car, left side encircles support and right side and encircles the support and insert at the grudging post lateral wall simultaneously, thereby support fixed left side through the grudging post and encircle support with right side, then through fork truck or other climbing mechanism, will constitute each vault of tunnel bow frame and place on left side encircles support, right side encircles support and top encircles support, and assemble directly on corresponding support body, with assemble the top arch on top bow, assemble left side arch on left side encircles the support, assemble right side arch on right side encircles the support, and through each clamping assembly centre gripping corresponding hunch section.
After the assembly is completed, driving the chassis truck to move to a tunnel arch frame installation position, and vertically arranging the vertical frame on the chassis truck through the extension of the first linear driver so as to vertically arrange the left arch support, the right arch support and the top arch support on the chassis truck, so that the top arch is directly lifted at the installation position, and the lifting of the top arch, the left arch and the right arch frame is completed through one-time lifting; then, the left arch support, the left display frame, the right arch support and the right display frame are driven to be unfolded through the action of the side display driver, so that the left arch and the right arch are unfolded to the installation position, then the left arch and the top arch are connected, and the right arch and the top arch are connected, so that the installation of the tunnel arch frame can be completed.
Before the left arch support, the left display frame, the right arch support and the right display frame are not unfolded, one ends of the left arch support and the right arch support, which are far away from the top arch support, are inserted into the side wall of the vertical frame, and the left arch support and the right arch support can be prevented from shaking in the vertical frame vertical setting process, so that the safety of the tunnel arch in the installation process is ensured. In the whole installation process, the side arches and the top arches are all finished on the chassis truck, and compared with the connection after the arch segments are lifted to the installation position, the connection/assembly is convenient and the efficiency is high, meanwhile, each arch segment is horizontally placed, the arch is vertically arranged, and only the two side arches and the top arch are required to be connected, so that the connection operation between the arch segments is convenient and the labor intensity is low; the arch segments are only required to be placed on the chassis truck and then pushed in place again, and compared with the method of directly lifting the arch segments to the installation position, the lifting stroke is small and the requirement on lifting equipment is met.
In summary, the tunnel arch frame installation device provided by the application can automatically support the two side arches and the top arch to the installation station through the bracket after the arch segments are assembled into the two side arches and the top arch on the ground, so that the two side arches and the top arch are conveniently connected, and the labor intensity of arch frame installation is reduced.
In an alternative embodiment, the chassis includes: the travelling mechanism can travel in the excavated tunnel; the frame is arranged on the travelling mechanism; the support table is slidably arranged at the top of the frame; the second linear driver is fixed on the frame and is in driving connection with the supporting table, and is used for driving the supporting table to move along the width direction of the frame; the vertical frame and the first linear driver are arranged on the supporting table, the vertical frame is driven to move in the width direction of the chassis through the second linear driver, and the position of the top of the vertical frame after being vertically arranged can be adjusted, so that the position of the whole arch frame can be conveniently adjusted.
In an alternative embodiment, the height of the frame can be adjusted to adjust the distance between the stand and the tunnel roof after erection by adjusting the height of the frame.
In an alternative embodiment, the frame is connected to the travelling mechanism by a hydraulic scissor mechanism to ensure stable lifting of the frame.
In an alternative embodiment, the lateral display driver includes a moving seat, the moving seat can move along the length direction of the stand, the left display rack is far erected at one end of the left arch support, the right display rack is far erected at one end of the right arch support, and the moving seat is hinged to the one end of the right arch support, so that the left display rack and the right display rack can be folded or unfolded towards the stand through the movement of the moving seat along the length direction of the stand.
In an alternative embodiment, the stand is provided with a guide slot extending along the length of the stand; guide wheels are arranged on two symmetrical side walls of the movable seat, and the two guide wheels respectively abut against two corresponding side walls of the guide groove; the side-spreading driver comprises two windlass, wherein the two windlass are respectively arranged at two ends of the length direction of the vertical frame, and the windlass is in transmission connection with the movable seat so as to drive the movable seat to move along the length direction of the vertical frame through the windlass.
In an optional embodiment, the lateral expansion driver further comprises a limiting mechanism, the limiting mechanism comprises a third linear driver and two stop rods, one end of each stop rod is hinged to two sides corresponding to the width direction of the movable seat, two ends of the third linear driver are hinged to two other ends corresponding to the stop rods, and the movable seat is fixed at the corresponding position on the vertical frame through the action of the limiting mechanism, so that the left arch support and the right arch support are prevented from loosening in the rotating process of the vertical frame, and the installation safety of the tunnel arch is further ensured.
In an alternative embodiment, the clamping assembly includes a fourth linear actuator and two support rods; the fourth linear driver is fixed on the corresponding frame body, and the middle parts of the two support rods are respectively hinged with the two sides of the corresponding frame body in the length direction; one end of each supporting rod is hinged with the moving end of the fourth linear driver, and the other ends of the two supporting rods are provided with supporting parts; and in a state that the fourth linear driver is folded, the arch segments corresponding to the arches can be clamped outside the two supporting parts.
The support parts on the two support rods are driven to synchronously move through the extension of the fourth linear driver, so that corresponding arch segments are clamped in a centering manner, the arch segments after assembly are shifted due to the action of the clamping assembly, and the opposite ends of the two side arches, which correspond to the top arches, cannot be unfolded. Moreover, the two supporting parts are abutted against the inner walls of the side wings of the arch section to clamp, so that interference caused by clamping of the clamping assembly to the installation of the arch frame can be avoided.
In an alternative embodiment, the moving end of the fourth linear driver is provided with a sleeve, and a mandrel is movably inserted in the sleeve; the mandrel sleeve is provided with a jacking spring, one end of the jacking spring is fixedly connected with the mandrel, the other end of the jacking spring is fixedly connected with the sleeve, so that the overstroke of the fourth linear driver is absorbed through the jacking spring, and the damage to the arch frame or the supporting rod caused by the fact that the fourth linear driver continuously moves when the two supporting parts are abutted against the inner walls of the arch section side wings is avoided.
In an alternative embodiment, the clamping assembly further comprises a clamping bar; the middle part of the clamping rod is hinged with the corresponding frame body, one end of the clamping rod is provided with a clamping part, and the clamping part can be clamped with the inner side wall of the corresponding arch section; the outer side wall of the sleeve is provided with a driving protrusion, and the other end of the clamping rod is positioned on the moving path of the driving protrusion; when the supporting part is abutted against the inner wall of the corresponding arch section flank, the driving protrusion is in driving connection with one end of the clamping rod, which is opposite to the sleeve, and the clamping part is close to the supporting part under the driving of the driving protrusion.
The inner walls of the flanks of the arch segments are tightly propped by the two supporting parts through the fourth linear driver, the arch segments are positioned and primarily clamped, then the pressure applied to the two supporting parts is increased through the continuous movement of the fourth linear driver, the clamping force of the two supporting parts to the corresponding arch segments is improved, the driving protrusions and the clamping rods are in driving connection with one end of the sleeve, the clamping parts are driven to be close to the supporting parts through the driving protrusions, and finally the two supporting parts push and clamp the inner walls of the corresponding arch segment side edges, the clamping parts and the side edges (inner side wings) of the arch segments under the combined action of the supporting parts, so that the clamping stability of the arch segments is ensured.
Compared with the prior art, the application has the following advantages and beneficial effects:
according to the tunnel arch frame installation device provided by the application, the vertical frame can be vertically arranged on the chassis vehicle through the extension of the first linear driver, the vertical frame is horizontally arranged on the chassis vehicle through the contraction of the first linear driver, and the left display frame and the right display frame are driven to be folded or unfolded towards the vertical frame through the action of the side display driver; simultaneously, all be equipped with a plurality of centre gripping subassemblies at roof arch support, left side arch support and right side arch support, can the arch section centre gripping that the bow member corresponds on corresponding support, can place each vault that constitutes tunnel bow member on left side arch support, right side arch support and roof arch support, and directly assemble on corresponding support body, then establish the grudging post on the chassis car through the extension of first linear drive, with left side arch support, right side arch support and roof arch support establish on the chassis car immediately, make the roof arch directly jack-up in the mounted position, then through the action of side exhibition driver, drive left side arch support, left side exhibition frame, right side arch support and right exhibition frame expand, make left side arch and right side arch expand to mounted position, then link to each other with the roof arch, right side arch and roof arch link to each other, the installation of tunnel bow can be accomplished, consequently, be convenient for link to each other with the roof arch and roof arch, can reduce the intensity of labour of bow member installation.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
In the drawings:
FIG. 1 is a schematic view of a tunnel arch mounting device according to an embodiment of the present application in an expanded state;
fig. 2 is a schematic structural diagram of a chassis according to an embodiment of the present application;
FIG. 3 is an enlarged schematic view of portion A of FIG. 1;
FIG. 4 is an enlarged schematic view of portion B of FIG. 1;
fig. 5 is a schematic top view of a tunnel arch mounting device according to an embodiment of the present application in a folded state.
In the drawings, the reference numerals and corresponding part names:
100-chassis, 110-first linear driver, 120-travelling mechanism, 130-frame, 140-supporting table, 150-second linear driver and 160-hydraulic shearing and forking mechanism;
200-vertical frames and 210-guide grooves;
300-side-spreading driver, 310-moving seat, 311-guide wheel, 320-windlass, 321-cable, 330-limit mechanism, 331-third linear driver and 332-stop rod;
400-supporting clamping frames, 410-top arch frames, 420-left arch frames, 430-left display frames, 440-right arch frames, 450-right display frames;
500-clamping assembly, 510-fourth linear drive, 511-sleeve, 511 a-drive projection, 512-spindle, 513-jack spring, 520-support bar, 521-support, 530-clamping bar, 531-clamping.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present application, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship conventionally put in use of the product of the application, or the orientation or positional relationship conventionally understood by those skilled in the art, is merely for convenience of describing the present application and simplifying the description, and does not indicate or imply that the apparatus or element in question must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.
Meanwhile, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.
Examples
With reference to fig. 1, this embodiment provides a tunnel arch mounting device, including: the chassis 100 is provided with a first linear driver 110, and one end of the first linear driver 110 is hinged with the chassis 100 body; one end of the vertical frame 200 is hinged with the chassis 100, and the other end of the first linear driver 110 is hinged with the middle part of the vertical frame 200; a side-span driver 300 provided on the stand 200; a top arch bracket 410, the middle of which is fixedly connected with the other end of the stand 200; a left arch bracket 420, one end of which is hinged with the left end of the top arch bracket 410; a left display frame 430, one end of which is hinged with the other end of the left arch support 420, and the other end of which is hinged with the side display driver 300; a right side arch bracket 440, one end of which is hinged with the right end of the top arch bracket 410; a right display frame 450 having one end hinged to the other end of the right arch support 440 and the other end hinged to the side display driver 300; wherein, the top arch support 410, the left arch support 420 and the right arch support 440 are provided with a plurality of clamping assemblies 500, and the clamping assemblies 500 can clamp the arch segments corresponding to the arches; the side display driver 300 can drive the left display rack 430 and the right display rack 450 to be folded toward the stand 200, and both ends of the left arch support 420 and the right arch support 440, which are far from the top arch support 410, can be inserted into the side walls of the stand 200.
Specifically, in connection with fig. 2, the chassis 100 includes: the travelling mechanism 120 is capable of travelling in the excavated tunnel; a frame 130 disposed on the traveling mechanism 120; a support table 140 slidably provided on the top of the frame 130; the second linear driver 150 is fixed on the frame 130, is in driving connection with the supporting table 140, and is used for driving the supporting table 140 to move along the width direction of the frame 130; wherein, the stand 200 and the first linear driver 110 are both disposed on the supporting table 140, and the second linear driver 150 drives the stand 200 to move in the width direction of the chassis, so that the position of the stand 200 at the top of the stand can be adjusted, so as to adjust the position of the whole arch.
The running mechanism 120 may be a tire running mechanism 120, a crawler running mechanism 120, etc., and only needs to be able to normally run in the excavated tunnel. For connection between the support table 140 and the frame 130, a plurality of guide posts extending along the width direction of the frame 130 may be provided on the frame 130, and the guide posts may be inserted into the support table 140, or an inverted trapezoidal guide rail may be provided on the station, and the support table 140 may be locked on the guide rail by simply ensuring that the support table 140 can slide with respect to the width direction of the frame 130. The second linear actuator 150 may be a hydraulic cylinder or a screw slider mechanism.
On this basis, the height of the frame 130 can be adjusted to adjust the distance between the stand 200 and the tunnel roof after standing by adjusting the height of the frame 130. In the present embodiment, the frame 130 is connected to the traveling mechanism 120 through a hydraulic scissor mechanism 160 to ensure stable lifting and lowering of the frame 130.
Referring to fig. 3, the side span actuator 300 includes a movable base 310, the movable base 310 can move along the length direction of the stand 200, one end of the left span 430 far from the left arch support 420 and one end of the right span 450 far from the right arch support 440 are hinged to the movable base 310, so that the left span 430 and the right span 450 can be folded or unfolded toward the stand 200 by moving the movable base 310 along the length direction of the stand 200.
To ensure that the movable base 310 can reliably move along the length direction of the stand 200, in this embodiment, the stand 200 is provided with a guide groove 210, and the guide groove 210 extends along the length direction of the stand 200; two symmetrical side walls of the movable seat 310 are provided with guide wheels 311, and the two guide wheels 311 respectively abut against the two side walls of the corresponding guide groove 210; the side-spreading driver 300 includes two windlass 320, the two windlass 320 are separately arranged at two ends of the length direction of the stand 200, the windlass 320 is connected with the movable base 310 in a transmission manner through a cable 321, so that the movable base 310 is driven to move along the length direction of the stand 200 through the windlass 320.
It can be appreciated that the side span driver 300 further includes a limiting mechanism 330, where the limiting mechanism 330 includes a third linear driver 331 and two stop rods 332, one end of each of the two stop rods 332 is hinged to two sides corresponding to the width direction of the movable seat 310, and two ends of the third linear driver 331 are hinged to the other ends corresponding to the two stop rods 332, so that the movable seat 310 is fixed at a corresponding position on the stand 200 through the action of the limiting mechanism 330, thereby avoiding loosening the left arch bracket 420 and the right arch bracket 440 during the rotation of the stand 200, and further ensuring the safety of the installation of the tunnel arch. Of course, other structures of the limiting mechanism 330 may be provided, such as a latch limiting mechanism 330, an electromagnet limiting mechanism 330, and the like.
Referring to fig. 4, the clamping assembly 500 provided in this embodiment includes a fourth linear actuator 510 and two support rods 520; the fourth linear driver 510 is fixed on the corresponding frame body, and the middle parts of the two support rods 520 are respectively hinged with the two sides of the corresponding frame body in the length direction; one end of each of the two support rods 520 is hinged with the moving end of the fourth linear driver 510, and the other ends of the two support rods 520 are provided with support parts 521; in the state where the fourth linear actuator 510 is folded, the arch segments corresponding to the arches can be locked to the outside of the two supporting portions 521.
Accordingly, the support parts 521 on the two support rods 520 are driven to move synchronously by the extension of the fourth linear driver 510, so that the corresponding arch segments are clamped in a centered manner, and the displacement of the assembled arch segments caused by the action of the clamping assembly 500 is avoided, so that the two-side arches cannot be opposite to the end parts corresponding to the top arches after being unfolded.
It should be noted that, for the length direction of the fourth linear actuator 510, the connecting line of the two supporting portions 521 should be straight, and the connecting line of the two supporting portions 521 should be located in the radial direction of the arch. The left side arch support 420, the right side arch support 440, the top arch support 410, the left display rack 430, and the right display rack 450 form a support frame 400.
Further, a sleeve 511 is disposed at the moving end of the fourth linear driver 510, and a mandrel 512 is movably inserted into the sleeve 511; the mandrel 512 is sleeved with a tightening spring 513, one end of the tightening spring 513 is fixedly connected with the mandrel 512, and the other end of the tightening spring 513 is fixedly connected with the sleeve 511, so that the excessive stroke of the fourth linear driver 510 is absorbed through the tightening spring 513, and the damage to the arch or the supporting rod 520 caused by the fact that the fourth linear driver 510 continues to move when the two supporting parts 521 are abutted against the inner walls of the side wings of the arch segments is avoided.
Preferably, the clamping assembly 500 further comprises a clamping bar 530; the middle part of the clamping rod 530 is hinged with the corresponding frame body, one end of the clamping rod 530 is provided with a clamping part 531, and the clamping part 531 can be clamped with the inner side wall of the corresponding arch section; the outer side wall of the sleeve 511 is provided with a driving protrusion 511a, and the other end of the clamping rod 530 is positioned on the moving path of the driving protrusion 511 a; when the supporting portion 521 abuts against the inner wall of the side wing of the corresponding arch segment, the driving protrusion 511a is in driving connection with one end of the clamping rod 530 opposite to the sleeve 511, and the clamping portion 531 is close to the supporting portion 521 under the driving of the driving protrusion 511 a.
The fourth linear driver 510 drives the two supporting parts 521 to tightly prop against the inner walls of the flanks of the arch segments, positions and primarily clamps each arch segment, then the fourth linear driver 510 continues to move, the pressure applied to the two supporting parts 521 is increased, the clamping force of the two supporting parts 521 to the corresponding arch segments is improved, meanwhile, the driving protrusions 511a and the clamping rods 530 are in driving connection with one end of the sleeve 511 opposite to each other, the clamping parts 531 are driven to close to the supporting parts 521 by the driving protrusions 511a, finally the two supporting parts 521 push and clamp the inner walls of the corresponding arch segment side edges, and the clamping parts 531 and the supporting parts 521 jointly act to clamp one side edge of the arch segment, so that the clamping stability of each arch segment is ensured. And the step-by-step clamping mode is adopted, so that the influence on the position of each arch segment can be avoided.
As can be seen from fig. 4, the clamping rod 530 is U-shaped, one end extends to one side of the sleeve 511 where the driving protrusion 511a is disposed, one end extends to one side of the corresponding frame body supporting arch section, and the middle portion is concave and hinged with the corresponding frame body, so that when the driving protrusion 511a pushes the clamping rod 530 to be away from one end of the clamping portion 531, the clamping portion 531 approaches the supporting portion 521 to clamp the inner side of the arch section (the side opposite to the tunnel wall is the outer side).
It will be appreciated that in this embodiment, hydraulic cylinders are used to ensure that each linear actuator is able to output sufficient torque.
With reference to fig. 5, a method for installing a tunnel arch using the tunnel arch installation device provided in this embodiment includes the following steps:
s10, the vertical frame 200 is laid on the chassis 100 by the contraction of the first linear actuator 110, and the left arch support 420, the left display frame 430, the right arch support 440 and the right display frame 450 are folded on the chassis 100 by the operation of the side display actuator 300.
Wherein one ends of the left and right arch brackets 420 and 440, which are far from the top arch bracket 410, are inserted into the side walls of the stand 200, thereby supporting and fixing the left and right arch brackets 420 and 440 through the stand 200.
S20, each arch forming the tunnel arch is placed on the left arch support 420, the right arch support 440 and the top arch support 410, and is directly assembled on the corresponding frame body, so as to assemble the top arch on the top arch, assemble the left arch on the left arch support 420, assemble the right arch on the right arch support 440, and clamp the corresponding arch segment by each clamping assembly 500.
In particular, the arch segments are placed on the corresponding brackets by a forklift or other lifting mechanism, or crane. Because the arch segments are smaller in length and lighter in weight, S10 and S20 can be completed either inside the tunnel or outside the tunnel (with fig. 1 and 5 being combined, the left and right arch supports 420, 440 are folded to have outer width dimensions smaller than the cross-sectional dimensions of the tunnel). When the tunnel is assembled outside, the hoist can be directly hoisted by a crane, and the hoist can be hoisted when the tunnel is assembled.
Meanwhile, before the left arch support 420, the left display frame 430, the right arch support 440 and the right display frame 450 are not unfolded, one ends of the left arch support 420 and the right arch support 440, which are far away from the top arch support 410, are inserted into the side walls of the vertical frame 200, and the left arch support 420 and the right arch support 440 can be prevented from shaking during the vertical setting of the vertical frame 200, thereby ensuring the safety of the tunnel arch in the installation process.
S30, after the assembly is completed, driving the chassis 100 to move to a tunnel arch frame installation position, and vertically arranging the vertical frame 200 on the chassis 100 through the extension of the first linear driver 110 so as to vertically arrange the left arch support 420, the right arch support 440 and the top arch support 410 on the chassis 100, so that the top arch is directly lifted at the installation position; thus, the lifting of the top arch, the left arch and the right arch is completed by one lifting.
After the chassis truck 100 moves to the safe position, the upright post is subjected to on-site measurement, and then the upright post is driven to move in the width direction of the chassis by the second linear driver 150, so that the upright post 200 is adjusted to be positioned at the top of the erected chassis, the upright post 200 can be centered after being erected, and the height of the frame 130 is adjusted by the hydraulic shearing fork mechanism 160, so that the distance between the upright post 200 and the top of the tunnel is adjusted.
And S40, the left arch support 420, the left display frame 430, the right arch support 440 and the right display frame 450 are driven to be unfolded by the downward movement of the movable seat 310 of the side display driver 300, so that the left arch and the right arch are unfolded to the installation positions, and then the left arch and the top arch are connected and the right arch and the top arch are connected, so that the installation of the tunnel arch can be completed.
It should be understood that for the case where the bottom arch is required to be installed, after the left and right arches are connected, the stand 200 is maintained in a vertical state, and then both ends of the bottom arch are connected to the corresponding left and right lower arches, respectively, and finally the clamping assembly 500 is released, the chassis truck 100 is moved such that the supporting parts 521 are withdrawn from the arches, and then the stand 200 and the corresponding brackets are driven to be restored for the next installation.
In the whole installation process, the side arches and the top arches are all completed on the chassis truck 100, and compared with the connection after the arch segments are lifted to the installation position, the connection/assembly is convenient and the efficiency is high, meanwhile, each arch segment is horizontally placed, the arch is vertically arranged, and only the two side arches and the top arch are required to be connected, so that the connection operation between the arch segments is convenient and the labor intensity is low; the arch segments only need to be placed on the chassis 100 and then pushed in place again, and compared with the method of directly lifting the arch segments to the installation position, the lifting stroke is small and the requirement on lifting equipment is met.
In summary, the tunnel arch frame installation device provided by the embodiment can automatically support the two side arches and the top arch to the installation station through the support after the arch segments are assembled into the two side arches and the top arch on the ground, so that the two side arches and the top arch are connected conveniently, and the labor intensity of arch frame installation is reduced.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
Claims (10)
1. A tunnel arch mounting device, comprising:
the chassis (100) is provided with a first linear driver (110), and one end of the first linear driver (110) is hinged with the chassis (100) body;
one end of the stand (200) is hinged with the chassis (100), and the other end of the first linear driver (110) is hinged with the middle part of the stand (200);
a side-spreading driver (300) provided on the stand (200);
a top arch bracket (410), the middle part of which is fixedly connected with the other end of the vertical frame (200);
a left arch bracket (420) having one end hinged to the left end of the top arch bracket (410);
a left display rack (430), one end of which is hinged with the other end of the left arch bracket (420), and the other end of which is hinged with the side display driver (300);
a right arch bracket (440) having one end hinged to the right end of the top arch bracket (410);
a right display rack (450), one end of which is hinged with the other end of the right arch support (440), and the other end of which is hinged with the side display driver (300);
wherein, the top arch support (410), the left arch support (420) and the right arch support (440) are provided with a plurality of clamping assemblies (500), and the clamping assemblies (500) can clamp the arch segments corresponding to the arches;
the side-spreading driver (300) can drive the left spreading frame (430) and the right spreading frame (450) to be folded towards the vertical frame (200), and one ends of the left arch support (420) and the right arch support (440), which are far away from the top arch support (410), can be inserted into the side wall of the vertical frame (200).
2. Tunnel arch mounting device according to claim 1, wherein the chassis (100) comprises:
a travelling mechanism (120) capable of travelling in the excavated tunnel;
a frame (130) arranged on the travelling mechanism (120);
a support table (140) slidably provided on the top of the frame (130);
a second linear driver (150) fixed on the frame (130) and in driving connection with the supporting table (140), for driving the supporting table (140) to move along the width direction of the frame (130);
wherein the stand (200) and the first linear actuator (110) are both provided on the support table (140).
3. A tunnel arch mounting device according to claim 2, wherein the height of the carriage (130) is adjustable.
4. A tunnel arch mounting device according to claim 3, wherein said carriage (130) is connected to said travelling mechanism (120) by means of a hydraulic scissor mechanism (160).
5. The tunnel arch mounting device of claim 1, wherein the side span actuator (300) comprises a movable mount (310), the movable mount (310) being movable along the length of the stand (200), the left span (430) being hinged to the movable mount (310) at one end of the left span (420) and the right span (450) being hinged to the movable mount (440) at one end of the right span (450).
6. A tunnel arch mounting device according to claim 5, wherein said stand (200) is provided with a guide slot (210), said guide slot (210) extending in the length direction of said stand (200);
guide wheels (311) are arranged on two symmetrical side walls of the movable seat (310), and the two guide wheels (311) respectively abut against two side walls of the corresponding guide groove (210);
the side-spreading driver (300) comprises two windlass (320), wherein the two windlass (320) are respectively arranged at two ends of the length direction of the stand (200), and the windlass (320) is in transmission connection with the movable seat (310) so as to drive the movable seat (310) to move along the length direction of the stand (200) through the windlass (320).
7. The tunnel arch mounting device according to claim 6, wherein the side span actuator (300) further comprises a limiting mechanism (330), the limiting mechanism (330) comprises a third linear actuator (331) and two stop rods (332), one ends of the two stop rods (332) are respectively hinged to two sides corresponding to the width direction of the movable base (310), and two ends of the third linear actuator (331) are respectively hinged to the other ends corresponding to the two stop rods (332).
8. A tunnel arch mounting device according to any of claims 1-7, wherein said clamping assembly (500) comprises a fourth linear drive (510) and two support bars (520);
the fourth linear driver (510) is fixed on the corresponding frame body, and the middle parts of the two support rods (520) are respectively hinged with the two sides of the corresponding frame body in the length direction;
one end of each supporting rod (520) is hinged with the moving end of the fourth linear driver (510), and the other end of each supporting rod (520) is provided with a supporting part (521);
wherein, in the state that the fourth linear driver (510) is folded, the arch segments corresponding to the arches can be clamped outside the two supporting parts (521).
9. The tunnel arch mounting device according to claim 8, wherein a sleeve (511) is provided at the moving end of the fourth linear driver (510), and a mandrel (512) is movably inserted into the sleeve (511);
the mandrel (512) is sleeved with a jacking spring (513), one end of the jacking spring (513) is fixedly connected with the mandrel (512), and the other end of the jacking spring is fixedly connected with the sleeve (511).
10. A tunnel arch mounting device according to claim 9, wherein said clamping assembly (500) further comprises a clamping bar (530);
the middle part of the clamping rod (530) is hinged with the corresponding frame body, one end of the clamping rod (530) is provided with a clamping part (531), and the clamping part (531) can be clamped with the inner side wall of the corresponding arch section;
the outer side wall of the sleeve (511) is provided with a driving protrusion (511 a), and the other end of the clamping rod (530) is positioned on the moving path of the driving protrusion (511 a);
when the supporting part (521) is abutted against the inner wall of the flank of the corresponding arch section, the driving protrusion (511 a) is in driving connection with one end of the clamping rod (530) opposite to the sleeve (511), and the clamping part (531) is close to the supporting part (521) under the driving of the driving protrusion (511 a).
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| CN202310820211.9A CN116557007B (en) | 2023-07-06 | 2023-07-06 | Tunnel arch frame installation device |
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| CN202310820211.9A CN116557007B (en) | 2023-07-06 | 2023-07-06 | Tunnel arch frame installation device |
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