CN113417670A - Device for tunnel maintenance and reinforcement - Google Patents
Device for tunnel maintenance and reinforcement Download PDFInfo
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- CN113417670A CN113417670A CN202110895847.0A CN202110895847A CN113417670A CN 113417670 A CN113417670 A CN 113417670A CN 202110895847 A CN202110895847 A CN 202110895847A CN 113417670 A CN113417670 A CN 113417670A
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- screw conveyor
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- 230000002787 reinforcement Effects 0.000 title description 8
- 238000012423 maintenance Methods 0.000 title description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 27
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 7
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 230000001105 regulatory effect Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 239000011440 grout Substances 0.000 description 8
- 239000010959 steel Substances 0.000 description 8
- 230000008439 repair process Effects 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000009415 formwork Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
-
- 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
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil 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
A device for maintaining and reinforcing a tunnel comprises a movable vehicle body, an electro-hydraulic push rod, an electric screw conveyor, a voltage-stabilized power supply, a power switch, a supporting plate mechanism and a variable-length supporting rod mechanism; the stabilized voltage power supply and the power switch are arranged in the element box; the electric hydraulic push rod and the electric screw conveyor are arranged on two sides of the upper end of the movable vehicle body, a feed port of the electric screw conveyor is provided with a feed delivery pipe, a raw material bin is arranged on the side part of the feed port, and the lower end of the raw material bin and the upper end of the feed delivery pipe are arranged together; the supporting plate mechanism comprises a supporting plate and an electric telescopic rod, and two sides of the electric telescopic rod are hinged to two lower side ends of the supporting plate; the upper end of the electro-hydraulic push rod and the lower end of the supporting plate are installed together, a feeding pipe is installed at one side end of the supporting plate, and the lower end of the feeding pipe is connected with a discharging pipe of the electric screw conveyor through a rubber pipe; the variable-length supporting rod mechanism comprises an internal threaded pipe and an external threaded screw rod, and the screw rod is connected with the internal threaded pipe through threads. The invention brings convenience to the working personnel, improves the working efficiency and improves the repairing efficiency.
Description
Technical Field
The invention relates to the technical field of maintenance equipment used for tunnels, in particular to a device for repairing and reinforcing tunnels.
Background
In the construction of tunnels including highways, railways and subways, the tunnels cast in place by concrete have the probability of generating quality defects such as pits and the like for various reasons; when the tunnel wall is recessed, repair is required. If the sunk position is in the invert position of tunnel wall (the cave-in that appears in the tunnel lateral wall, because repair materials such as concrete adhere to easily, therefore repair easily some relatively), because prosthetic concrete materials etc. are difficult to adhere to, therefore among the prior art, generally all set up interim support frame at sunk position lower extreme, the support frame upper end sets up the template, template upper end contact sunk position lower extreme, then pour concrete etc. in the template upper end and reach the restoration purpose.
Under the actual condition, when tunnel inner wall inverted arch sunken restoration is carried out among the prior art, set up and dismantle support frame, template etc. owing to need longer time, can bring inconvenience for the staff, also do not benefit to and improve work efficiency. In addition, the concrete poured on the upper end of the formwork can not ensure that the concrete can effectively fill all the depressions (the concrete can not ensure that the depressions are filled due to the downward flowing of the weight, and the concrete can overflow downwards along the gap between the upper end of the formwork), so that the repairing effect can be influenced. Finally, before the tunnel wall inverted arch is repaired, in order to achieve a good pouring effect, a steel bar framework and the like are required to be arranged in the sunken part; in the prior art, a steel bar framework is generally directly welded firstly, and then the framework is plugged into a depression, and the framework installed in the mode cannot well achieve a stabilizing effect with the depression, so that the repairing effect is influenced; although can overcome above-mentioned problem through drilling installation clamping screw, welding screw and steel reinforcement skeleton together in tunnel sunken corresponding position again, tunnel invert position is because the angle restriction, and inconvenient staff's operation can bring very big inconvenience for staff's operation, and when the sunken degree of depth is less shallow, more is unfavorable for staff's operation and installation clamping screw etc.. In summary, the method particularly applied to tunnel inverted arch depression repair at present has great limitation, and it is especially necessary to provide a maintenance and reinforcement device for a tunnel with high repair speed and good repair effect.
Disclosure of Invention
In order to overcome the defects that in the prior art, no proper equipment and method for repairing the inverted arch depression of the tunnel wall cannot achieve a good repairing effect, inconvenience is brought to workers, and work efficiency is not improved, the invention provides the combined action of related mechanisms, when the depression of the tunnel wall is repaired, a support frame (scaffold) is not required to be erected and disassembled on site, the tunnel wall can be conveniently supported on site through a movable vehicle body, the deformable support plate can be better attached to the lower end of the depression, the concrete grout can be prevented from overflowing towards the lower end under the premise of well sealing the gap of the lower end of the depression, the concrete grout is conveyed into the depression through the support plate by an electric screw conveyor, the concrete grout can be effectively filled into the depression, and a steel bar framework is fixed by the length-variable support rod mechanism, so that convenience is brought to the workers, The device for tunnel maintenance and reinforcement improves the working efficiency and the repair efficiency.
The technical scheme adopted by the invention for solving the technical problem is as follows:
a device for maintaining and reinforcing a tunnel comprises a movable vehicle body, an electro-hydraulic push rod, an electric screw conveyor, a voltage-stabilized power supply and a power switch, and is characterized by also comprising a supporting plate mechanism and a variable-length supporting rod mechanism; the stabilized voltage power supply and the power switch are arranged in the element box; the electric hydraulic push rod and the electric screw conveyor are respectively arranged on two sides of the upper end of the movable vehicle body, a feed port of the electric screw conveyor is provided with a feed delivery pipe, a raw material bin is arranged on the side part of the electric screw conveyor, and the lower end of the raw material bin and the upper end of the feed delivery pipe are arranged together; the supporting plate mechanism comprises a supporting plate and an electric telescopic rod, and a piston rod of the electric telescopic rod and a cylinder body are respectively hinged to the lower two side ends of the supporting plate; the upper end of the electro-hydraulic push rod and the lower end of the supporting plate are mounted together, an internal thread opening is formed in one side end of the supporting plate, a feeding pipe is mounted in the opening, and the lower end of the feeding pipe is connected with a discharging pipe of the electric screw conveyor through a rubber pipe; the length-variable support rod mechanism is provided with a plurality of support rods, each length-variable support rod mechanism comprises an internal thread pipe and an external thread screw rod, and the screw rods are connected with the internal thread pipes through threads; and the power output end of the power switch is electrically connected with the power input end of the electric telescopic rod.
Further, the movable vehicle body adopts a hand-push vehicle body and can also adopt a motor-driven movable vehicle body.
Further, the stabilized voltage supply is an alternating current to direct current switching power supply module.
Further, the outer diameter of the supporting plate is larger than that of the concave part of the tunnel, the supporting plate is made of an elastic metal plate, and the metal plate can be in any shape.
Furthermore, the height of the raw material bin is higher than that of the electric screw conveyor, and the length of the rubber tube is larger than the distance between a piston rod of the electric-hydraulic push rod which moves upwards to a stop point, the lower end of the supporting plate and the upper part of a discharge pipe of the electric screw conveyor.
Furthermore, the side ends of the internal thread pipe and the external thread screw rod of the variable-length support rod mechanism are respectively provided with a pointed cone outer bulge.
The invention has the beneficial effects that: the method is particularly suitable for repairing the inverted arch of the tunnel wall. The invention has the movable vehicle body, so the tunnel wall recess repairing device can be conveniently transferred to the site to carry out the tunnel wall recess repairing work, and the support frame (scaffold) does not need to be erected and disassembled on the site. Before the restoration operation, operations such as punching are not needed, and after the staff respectively install a plurality of variable-length supporting rods in the tunnel recess, the reinforcing steel bar fixing frame can be conveniently fixed. The height of the supporting plate can be adjusted through the electro-hydraulic push rod, the upper end of the supporting plate can be effectively attached to the cambered surface of the lower end of the sunken part through adjusting the electric telescopic rod, and the subsequent concrete grout can be prevented from overflowing towards the lower end on the premise of well sealing the gap of the lower end of the sunken part; the electric screw conveyor conveys the concrete slurry in the concave through the supporting plate, so that the concave can be effectively filled with the concrete slurry. The invention brings convenience to the working personnel, improves the working efficiency and improves the repairing efficiency. Based on the above, the invention has good application prospect.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic diagram of the present invention.
Fig. 2 is a schematic structural view of the supporting plate mechanism of the present invention.
Fig. 3 is a schematic structural view of the variable-length support bar mechanism of the present invention.
Fig. 4 is a circuit diagram of the present invention.
Detailed Description
As shown in fig. 1, 2 and 3, a device for tunnel maintenance and reinforcement comprises a movable vehicle body 1, an electro-hydraulic push rod 2, an electric screw conveyor 3, a stabilized voltage power supply 4, a power switch 5, a supporting plate mechanism and a variable-length supporting rod mechanism; the right side end 1 of the movable vehicle body is welded with a mounting plate 101, a stabilized voltage power supply 4 and a power switch 5 are installed in an element box 6, the element box 6 is installed at the right side end of the mounting plate 101, and an operating handle of the power switch 5 is positioned outside an opening at the right front end of the element box 6; the electro-hydraulic push rod 2 is vertically distributed, the lower end of a cylinder body of the electro-hydraulic push rod is installed at the left part of the upper end of the movable vehicle body 1 through a screw nut, the lower end of a shell of the electric screw conveyor 3 is vertically distributed, the lower end of the shell of the electric screw conveyor is installed at the middle part of the upper end of the movable vehicle body 1 through a screw nut, a feed inlet of the electric screw conveyor 3 is obliquely welded with a feed delivery pipe 31, a raw material bin 7 with an open upper end and a conical lower end is installed at the upper and right ends of the movable vehicle body 1, an opening is formed in the middle part of the lower end of the raw material bin 7, and the upper end of the feed delivery pipe 31 is welded and installed below the opening; the supporting plate mechanism comprises a metal supporting plate 81 and two sets of electric telescopic rods 82, the electric telescopic rods 82 are arranged in two sets, the two sets of electric telescopic rods 82 are transversely distributed and are arranged at a certain distance from front to back, the front ends of piston rods of the electric telescopic rods 82 are respectively hinged to the front part and the back part of the lower left side end of the supporting plate 81, and the rear ends of cylinder bodies of the two sets of electric telescopic rods 82 are respectively hinged to the front part and the back part of the lower right side end of the supporting plate 81; the upper end of a piston rod of the electro-hydraulic push rod 2 and the middle part of the lower end of the supporting plate 81 are installed together through a screw and a nut, the middle part of the right end of the supporting plate 81 is provided with an opening, the opening is provided with an internal thread, a feeding pipe 83 is vertically installed in the opening (the upper end of the feeding pipe 83 is screwed into the opening through the external thread and then installed below the right end of the supporting plate 81), and a rubber pipe 9 is sleeved on the lower end of the feeding pipe 83 and the outer side of a discharging pipe 32 at the upper end of the electric screw conveyor 3; the variable-length supporting rod mechanisms are provided with a plurality of supporting rods (one or more supporting rods are used for each tunnel wall recess), each variable-length supporting rod mechanism comprises an internal thread pipe 1011 and an external thread screw rod 1012, and the left end of the external thread screw rod 1012 is screwed into an internal thread in the right end of the internal thread pipe 1011 through an external thread to realize transverse connection of the internal thread and the external thread screw rod.
As shown in fig. 1, 2, and 3, the movable vehicle body 1 can be a hand-push vehicle body, and can also be a motor-driven vehicle body having wheels (in this embodiment, a hand-push vehicle body). The outer diameter of the support plate 81 is larger than that of the recess of the tunnel, the support plate 81 is made of a thin steel plate having elasticity in this example, and the outer shape of the metal plate 81 can be any shape such as a circle, a rectangle, etc. (a rectangle is used in this example). The height of the raw material bin 7 is higher than that of the electric screw conveyor 3, and the length of the rubber tube 9 is larger than the distance between the piston rod of the electric hydraulic push rod 2 which moves upwards to a dead point position, the lower end of the supporting plate and the upper part of the discharge pipe 32 of the electric screw conveyor. The left end of the internal threaded pipe 1011 and the right end of the external threaded screw 1012 of the variable-length support rod mechanism are respectively provided with a pointed cone external protrusion.
As shown in fig. 1, 2 and 3, the electro-hydraulic push rod M2 is a finished product of an electro-hydraulic push rod with working voltage of alternating current 220V and model DYTZ-C, the moving stroke of a piston rod is 1500mm, the motor is a capacitor operation motor and has three terminals, two of the three terminals are respectively connected with two terminals of a capacitor C, the other terminal is connected with one end of a winding, when one pole of a 220V power supply is connected with one terminal of the capacitor C and the other pole of the 220V power supply is connected with one end of the winding, a rotating shaft of the motor rotates forwards, the piston rod of the electro-hydraulic push rod moves upwards, when one pole of the 220V power supply is connected with the other terminal of the capacitor C and the other pole of the 220V power supply is connected with one end of the winding, the rotating shaft of the motor rotates backwards, and the piston rod of the electro-hydraulic push rod moves downwards. The electric telescopic rod M is a finished product of an electric push rod with a working voltage of 24V and a model PXTL, and the stroke of a piston rod of the electric telescopic rod M is 500 mm. The regulated power supply U1 is a finished product of an AC-to-DC switching power supply module with the model number of RS-6-48-1KW, and is provided with two power supply input ends 1 and 2 pins, four power supply output ends 3 and 4 pins, and 5 and 6 pins, wherein the input AC 220V, 3 and 4 pins output 12V DC power, and the 5 and 6 pins output 24V DC power. The third power switch U2 has two power input terminals 1 and 2 pins, and two power output terminals 3 and 4 pins, 5 pins and 6 pins. The electric screw conveyor M1 is a small electric screw conveyor finished product with working voltage of alternating current 220V and power of 1KW, and a rotating shaft of a motor speed reducing mechanism can drive a screw conveying blade to rotate and convey raw materials entering through a feed inlet to a high position through a discharge pipe 32 during working.
As shown in fig. 1, 2 and 3, the power supply switches include three power supply switches, wherein the power supply input ends of two power supply switches S, SK and a regulated power supply U1 (1 and 2 pins) are respectively connected with two poles of an alternating current 220V through leads (a power supply line with a certain length margin is matched and sleeved on the movable vehicle body, and a power supply line plug is inserted into a socket to supply power to the whole equipment). The pins 3 and 4 of the power output end of the voltage-stabilized power supply U1 and the pins 1 and 2 of the power input end of the third power switch U2 are respectively connected through leads. Two power output ends 3, 4 pins and 5, 6 pins of a third power switch U2 and positive and negative poles power input ends of the two sets of electric telescopic rods M are respectively connected through leads. The power output ends of the two power switches S, SK are respectively connected with the power input ends of the electric screw conveyor M and the electro-hydraulic push rod M2 through leads (the inlet end of the power switch SK is connected with one pole of a 220V power supply, and the two outlet ends are respectively connected with the two ends of the capacitor C).
As shown in fig. 1, 2 and 3, the invention is particularly suitable for repairing the inverted arch depression of the tunnel wall. When the movable type repairing device is used, if the recess of the tunnel wall needs to be repaired, workers push the movable type vehicle body 1 to the site in a hand-push mode and are positioned at the lower end of the recess. After the concrete reaches the restoration area, the worker can adopt a proper number of variable-length supporting rods as required, the distance between the threaded pipe 1011 and the screw rod 1012 (with a hexagonal clamping head) is adjusted by a wrench respectively (the screw rod is adjusted rightwards to enable the lengths of the threaded pipe 1011 and the screw rod 1012 to be lengthened, and the screw rod is adjusted leftwards to enable the lengths of the threaded pipe 1011 and the screw rod 1012 to be shortened), the two sides of the threaded pipe 1011 and the screw rod 1012 (provided with pointed cone bulges can effectively prop against two side ends of a concave part, particularly, the effect of propping the pointed cone bulges against the left and right concave parts at the two sides of the concave part is better, and the stability of concrete after subsequent pouring is also better) are tightly propped against the left and right side ends of the concave part, after a plurality of variable-length supporting rods are installed, the worker can bind the prefabricated steel bar framework 11 at the lower ends of the variable-length supporting rods through metal iron wires and the like, and can be optimally prepared for subsequent concrete pouring. The process for fixing the variable-length supporting rod and the steel bar framework 11 is simple and fast, and overcomes the defect that the framework is plugged into the recess in the prior art, and the installed framework can not well achieve a stabilizing effect with the recess, so that the repairing effect is influenced; through the corresponding position drilling installation clamping screw in the tunnel is sunken, again with screw rod and framework of steel reinforcement welding together, tunnel invert position is because angle restriction, inconvenient staff's operation can bring very big inconvenience for staff's operation, and when the sunken degree of depth is less shallow, more is unfavorable for staff's operation and the drawback of installation clamping screw etc..
As shown in fig. 1, 2, 3 and 4, after the 220V ac power enters pins 1 and 2 of regulated power supply U1, pins 3 and 4 of regulated power supply U1 will output a stable dc 24V power into the power input terminal of the third power switch U2. After the reinforcement cage is fixed, a worker shifts the power switch SK handle leftwards, so that the electro-hydraulic push rod M2 is electrified to work, the piston rod of the electro-hydraulic push rod gradually pushes the support plate 81 to move upwards, when the upper end of the supporting plate 81 just contacts the lower outer side end of the concave part, a worker shifts the shifting handle of the power switch U2 leftwards, so that the two sets of electric telescopic rods M are electrified to work, the piston rods of the electric telescopic rods M are retracted inwards, thus, the left and right parts of the supporting plate 81 can be gradually folded, the middle of the upper end can be gradually increased in height, the heights of the two sides can be gradually reduced to generate an arch shape and an arc surface of the tunnel inverted arch which are as consistent as possible (the upper end of the supporting plate is effectively attached to the lower end of the concave part, and the subsequent concrete grout can be prevented from overflowing towards the outside of the lower end on the premise of achieving good sealing of the gap at the lower end of the concave part), after the upper end of the supporting plate 81 is attached to the lower end of the concave part, the power switch SK is turned off, and after the upper end of the supporting plate 81 is completely attached to the outer side end of the groove and the cambered surfaces are matched, the power switch U2 is turned off. Because the invention can adjust different cambered surfaces of the supporting plate 81 through two sets of electric telescopic rods M (the toggle handle of the power switch U2 is toggled leftwards or rightwards, the two sets of electric telescopic rods M are electrified to work, piston rods of the electric telescopic rods are retracted inwards or extended outwards, the left part and the right part of the supporting plate 81 are gradually folded or extended, and the cambered surface at the upper end of the supporting plate 81 is changed greatly or slightly when the middle height of the upper end is gradually increased or reduced), the supporting plate can be matched with the surface with different radians at any position of the tunnel inverted arch and can effectively play a role in sealing, the defect that the application range is small when only a supporting plate (template) with one cambered surface is attached to the groove of the tunnel inverted arch (the existing supporting template with one radian and one shape only can play a role in supporting and sealing the inverted arch with one radian surface, but the left part to the right part of the tunnel inverted arch radian is not fixed, therefore, the supporting and sealing effects are poor; preparing sealing templates of various radians is not only costly but also greatly inconvenient for workers to replace).
In the invention, after the upper end of the supporting plate 81 is fixed, a worker injects concrete materials into the raw material bin 7 and then turns on the power switch S, so that the electric screw conveyor M1 works electrically and the screw conveying blades thereof can continuously input concrete input through the inclined line distribution conveying pipe 31 into the concave part of the inverted arch of the tunnel at the upper end of the supporting plate 81 (the upper end of the supporting plate 81 is coated with lubricating oil or covered with an isolating film to facilitate subsequent demoulding) through the rubber pipe 9 and the feeding pipe 83 at the right end of the supporting plate 81, and concrete is poured into the concave part; after the concrete is filled, the power switch S is closed (after the concrete is filled in the depression, the concrete amount in the raw material bin is not reduced for a period of time, and accordingly, the worker can judge that the concrete in the depression is filled, and the filling can be stopped). A period of time after pouring (generally 20 minutes apart just can, the concrete has certain intensity and does not condense completely at this moment, take off material loading pipe 83 concrete and can not flow downwards), constructor waits to revolve material loading pipe 83 off and washs its inside on the bench (and wash the rubber tube), in order to do benefit to next use (when having filled the concrete initial stage, the staff just can take off rubber tube 9 lower extreme from the discharging pipe 32 upper end of electronic spiral feeder, buckle the rubber tube lower extreme and prevent that the concrete from spilling, then carry out water washing to electric screw conveyer earlier, prevent that the concrete from condensing and causing electric screw conveyer trouble). According to the invention, the electric screw conveyor conveys the concrete grout into the concave part through the supporting plate, so that the concave part can be effectively filled with the concrete grout, and the concrete grout can be operated by workers on the ground, thereby bringing convenience to the workers. In the invention, a plastic pipe with low cost can be used as the feeding pipe 83 for one-time use, so that after pouring, a worker directly pulls out the hose to plug a blocking object (such as paper, a wooden plug and the like) into the lower end of the feeding pipe 83 to clean the hose and the electric screw conveyor (the speed is higher, and the feeding pipe 83 is directly screwed down to replace a new feeding pipe 83 before next use). In the invention, after concrete is poured for a period of time, according to different sizes of the sunken areas (the sunken time is relatively long, otherwise, the sunken time is short), after the concrete has certain strength (generally for a plurality of hours), a worker shifts a handle of a power switch SK to the right, an electro-hydraulic push rod M2 is electrified to work, a piston rod of the electro-hydraulic push rod gradually drives a supporting plate 81 to descend, and when the upper end of the supporting plate 81 is separated from the lower outer side end of the sunken part and descends to a certain height to facilitate transportation, the power switch SK is turned off. In the invention, the movable vehicle body is arranged, so that the tunnel wall can be conveniently transferred to the site to carry out the tunnel wall recess repairing work, and a support frame (scaffold) does not need to be erected and disassembled on the site, thereby bringing convenience to workers and improving the working efficiency.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims (6)
1. A device for maintaining and reinforcing a tunnel comprises a movable vehicle body, an electro-hydraulic push rod, an electric screw conveyor, a voltage-stabilized power supply and a power switch, and is characterized by also comprising a supporting plate mechanism and a variable-length supporting rod mechanism; the stabilized voltage power supply and the power switch are arranged in the element box; the electric hydraulic push rod and the electric screw conveyor are respectively arranged on two sides of the upper end of the movable vehicle body, a feed port of the electric screw conveyor is provided with a feed delivery pipe, a raw material bin is arranged on the side part of the electric screw conveyor, and the lower end of the raw material bin and the upper end of the feed delivery pipe are arranged together; the supporting plate mechanism comprises a supporting plate and an electric telescopic rod, and a piston rod of the electric telescopic rod and a cylinder body are respectively hinged to the lower two side ends of the supporting plate; the upper end of the electro-hydraulic push rod and the lower end of the supporting plate are mounted together, an internal thread opening is formed in one side end of the supporting plate, a feeding pipe is mounted in the opening, and the lower end of the feeding pipe is connected with a discharging pipe of the electric screw conveyor through a rubber pipe; the length-variable support rod mechanism is provided with a plurality of support rods, each length-variable support rod mechanism comprises an internal thread pipe and an external thread screw rod, and the screw rods are connected with the internal thread pipes through threads; and the power output end of the power switch is electrically connected with the power input end of the electric telescopic rod.
2. The apparatus for repairing and reinforcing a tunnel according to claim 1, wherein the movable vehicle body is a hand-push type vehicle body and a motor-driven type vehicle body.
3. The device of claim 1, wherein the regulated power supply is an ac-to-dc switching power supply module.
4. The device for repairing and reinforcing a tunnel according to claim 1, wherein the outer diameter of the supporting plate is larger than the outer diameter of the recess of the tunnel, the supporting plate is a metal plate having elasticity, and the metal plate can take any shape.
5. The device for repairing and reinforcing the tunnel according to claim 1, wherein the height of the raw material bin is higher than that of the electric screw conveyor, and the length of the rubber tube is larger than the distance between a piston rod of the electric hydraulic push rod which moves upwards to a stop point, the lower end of the supporting plate and the upper part of a discharge pipe of the electric screw conveyor.
6. The device as claimed in claim 1, wherein the variable-length support rod mechanism has a tapered outer protrusion at each of the inner threaded tube and the outer threaded screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2053297A (en) * | 1979-07-12 | 1981-02-04 | Drahtwerke Rosler Soest Gmbh | Wire-netting support for lining in mining and tunnel construction |
| RU2112141C1 (en) * | 1994-01-14 | 1998-05-27 | Товарищество с ограниченной ответственностью "Коммерческое научно-производственное общество ЗР" | Process of location of braces on frame members of support and gear for its realization |
| CN205063972U (en) * | 2015-10-28 | 2016-03-02 | 中铁建大桥工程局集团第五工程有限公司 | A fill formula strutting arrangement for controlling tunnel landslide |
| CN205225283U (en) * | 2015-12-24 | 2016-05-11 | 湖南科技大学 | Empty solution cavity light -duty supporting construction in tunnel in top |
| CN106968692A (en) * | 2017-05-27 | 2017-07-21 | 中国水利水电第四工程局有限公司 | A kind of construction method of tunnel excavation support structure and the supporting construction |
| CN211735498U (en) * | 2018-11-12 | 2020-10-23 | 杭州江润科技有限公司 | Cave excavation collapse treatment structure |
-
2021
- 2021-08-05 CN CN202110895847.0A patent/CN113417670B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2053297A (en) * | 1979-07-12 | 1981-02-04 | Drahtwerke Rosler Soest Gmbh | Wire-netting support for lining in mining and tunnel construction |
| RU2112141C1 (en) * | 1994-01-14 | 1998-05-27 | Товарищество с ограниченной ответственностью "Коммерческое научно-производственное общество ЗР" | Process of location of braces on frame members of support and gear for its realization |
| CN205063972U (en) * | 2015-10-28 | 2016-03-02 | 中铁建大桥工程局集团第五工程有限公司 | A fill formula strutting arrangement for controlling tunnel landslide |
| CN205225283U (en) * | 2015-12-24 | 2016-05-11 | 湖南科技大学 | Empty solution cavity light -duty supporting construction in tunnel in top |
| CN106968692A (en) * | 2017-05-27 | 2017-07-21 | 中国水利水电第四工程局有限公司 | A kind of construction method of tunnel excavation support structure and the supporting construction |
| CN211735498U (en) * | 2018-11-12 | 2020-10-23 | 杭州江润科技有限公司 | Cave excavation collapse treatment structure |
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| CN113417670B (en) | 2023-11-14 |
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