CN114622576B - Supporting device with collapse-preventing structure for trench excavation - Google Patents
Supporting device with collapse-preventing structure for trench excavation Download PDFInfo
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- CN114622576B CN114622576B CN202210381636.XA CN202210381636A CN114622576B CN 114622576 B CN114622576 B CN 114622576B CN 202210381636 A CN202210381636 A CN 202210381636A CN 114622576 B CN114622576 B CN 114622576B
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 29
- 239000003921 oil Substances 0.000 claims description 60
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- 239000010720 hydraulic oil Substances 0.000 claims description 12
- 238000005086 pumping Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003780 insertion Methods 0.000 description 10
- 230000037431 insertion Effects 0.000 description 10
- 238000010276 construction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 230000002265 prevention Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/06—Foundation trenches ditches or narrow shafts
- E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
- E02D17/083—Shoring struts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
- E02D19/18—Restraining of underground water by damming or interrupting the passage of underground water by making use of sealing aprons, e.g. diaphragms made from bituminous or clay material
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Composite Materials (AREA)
- Chemical & Material Sciences (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention belongs to the technical field of pipe ditch support, and particularly relates to a support device with an anti-collapse structure for pipe ditch excavation, which comprises the following components: supporting the wallboard; an impermeable support assembly; the pressure-bearing member is abutted against the inner side of the support wallboard through the seepage-proof support assembly; the hydraulic driving piece is connected with the collapse-preventing pressing part through a hydraulic pipe with a joint, so that the movable ends of the collapse-preventing pressing part are controlled to axially displace. The anti-collapse pressing component is reasonable in structural design, the hydraulic driving piece is connected with the anti-collapse pressing component through the hydraulic pipe with the connector based on the hydraulic principle, the movable end of the anti-collapse pressing component is further controlled to axially displace, the pressure sensor is arranged in the pressing positioning hole, and when the pressure of the pressure sensor is smaller than a set value, the pressure can be applied in real time, so that reliable support of the support wallboard is met.
Description
Technical Field
The invention belongs to the technical field of pipe ditch support, and particularly relates to a support device with an anti-collapse structure for pipe ditch excavation.
Background
The trench support is constructed by adopting Larson steel plates, and Larson steel plate piles are also called U-shaped steel plate piles, which are used as novel building materials and are used as soil retaining, water retaining and sand blocking walls when bridge cofferdams, large-scale pipeline laying and temporary trench excavation are carried out; the method plays an important role in engineering in the aspects of protecting walls, retaining walls, embankment protection banks and the like in wharfs and unloading yards. The Larson steel sheet pile is used for making the cofferdam, which is green and environment-friendly, and has high construction speed and low construction cost. In the prior art, lassen steel plates are mostly adopted to strengthen edges in the construction process, the Lassen steel plates are fixed through I-steel and supporting steel, and certain errors exist in the construction process, so that certain inconvenience exists in the process of fixing and the process of installing the supporting steel with the same specification; and the existing Larson steel plate is not strong enough for the water resistance of the vertical end surface, so that the possibility of water seepage still exists on the vertical end surface.
Disclosed in the patent specification of publication No. CN213867859U is a supporting device for preventing collapse in trench excavation, the supporting device comprising: a guard board; the guard plates comprise a left guard plate and a right guard plate; a support base; the supporting seat is of a frame structure and is sleeved on the periphery of the guard plate; the supporting seat is detachably connected with the guard plate; the roller is arranged at the bottom of the supporting seat. The support length of the collapse-preventing support device for trench excavation is fixed, and the collapse-preventing support device cannot be quickly adjusted according to actual requirements, so that the collapse-preventing support device is inconvenient to use.
The patent specification with the publication number of CN206667268U discloses a device for trench excavation supporting, which comprises two baffles which are arranged in parallel, wherein a plurality of supporting rods which are arranged vertical to the baffles are arranged between the baffles; both ends of the stay bar are connected with the inner side wall of the baffle; the stay bar comprises a first telescopic part and a second telescopic part, one end of the first telescopic part is connected with the inner side wall of one baffle plate, the other end of the first telescopic part stretches into one end of the second telescopic part and is bolted with the second telescopic part through a first pin shaft, and the other end of the second telescopic part is connected with the inner side wall of the other baffle plate; a plurality of first adjusting holes are formed in the first telescopic part and the second telescopic part at intervals, and the first pin shaft can be inserted into the first adjusting holes to bolt the first telescopic part and the second telescopic part. When the utility model is used, the supporting baffles are directly placed in the groove, the excavator excavates among the supporting baffles, the potential safety hazard caused by collapse of the side slope in the excavation process is avoided, and the construction efficiency is improved. The device for trench excavation supporting has the function of supporting the length adjustable, but needs manual adjustment, has high operation difficulty, has poor supporting reliability on supporting the wallboard, and cannot improve the water seepage problem.
Therefore, there is a need for an improved optimization of existing trench excavation with support devices.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a supporting device with an anti-collapse structure for trench excavation.
In order to achieve the technical purpose and the technical effect, the invention is realized by the following technical scheme:
A support device with an anti-collapse structure for trench excavation, comprising:
Supporting the wallboard;
An impermeable support assembly;
The pressure-bearing member is abutted against the inner side of the support wallboard through the seepage-proof support assembly;
The hydraulic driving piece is connected with the collapse-preventing pressing part through a hydraulic pipe with a joint, and further the movable ends of the collapse-preventing pressing part are controlled to axially displace.
Further, in the supporting device with the collapse prevention structure for trench excavation, the supporting wall boards are arranged in two rows, each supporting wall board is formed by surrounding a plurality of U-shaped Larson steel sheet piles, the relatively protruding parts of the inner sides of the supporting wall boards are used as pressing parts, the supporting wall boards are located in the outer side areas of the pressing parts and are used as water seepage areas, and the connecting ends of the two connected U-shaped Larson steel sheet piles are located in the water seepage areas.
Further, in the supporting device with the collapse preventing structure for trench excavation, the anti-seepage supporting component comprises a pressing plate, an inserting pipe and supporting blocks, the inserting plate is fixed at the lower end of one side of the pressing plate, the inserting pipe is fixed at the lower end of the other side of the pressing plate, and the supporting blocks for supporting the pressure-bearing member are installed on the inserting plate along the length direction.
Further, in the supporting device with the collapse preventing structure for trench excavation, a fastening seat matched with the fastening nail is arranged on the lower side of the supporting block, and the plugboard is provided with a perforation matched with the fastening nail.
Further, in the supporting device with the collapse preventing structure for trench excavation, the insertion plates are distributed in the inner side area of the supporting wallboard pressing part, and the insertion pipes are distributed in the outer side water seepage area of the supporting wallboard pressing part; the inner cavity of the cannula is used as a water pumping cavity, and a plurality of water seepage drainage holes communicated with the inner cavity of the cannula are formed in the length direction of the cannula body.
Further, in the supporting device with the collapse preventing structure for trench excavation, the pressure-bearing member is a rectangular pressure-bearing pipe, and the outer wall of the side plate of the pressure-bearing member is provided with a pressing positioning hole.
Further, in the supporting device with the collapse-preventing structure for trench excavation, the collapse-preventing pressing part comprises a cylindrical body, a cylindrical cavity and an annular cavity are arranged in the cylindrical body, the cylindrical cavity is divided into a hydraulic oil chamber in the middle and movable chambers at two ends by two pistons, and a pressing rod extending out of the end part of the cylindrical body is fixedly arranged on one side, close to the movable chambers, of the piston; the cylindrical body is provided with an oil guide pipe in a penetrating mode, the oil guide pipe is communicated with the hydraulic oil chamber through a first pipeline, the first pipeline is provided with a first one-way valve, the oil guide pipe is communicated with the annular cavity through a second pipeline, and the second pipeline is provided with a second one-way valve.
Further, in the support device with the collapse preventing structure for trench excavation, oil guide pipes of the collapse preventing pressing parts which are arranged in the same row are connected to the same hydraulic pipe, when the oil guide pipes feed oil inwards, the first pipeline where the first one-way valve is located can smoothly guide oil, and the second one-way valve closes an oil guide channel of the second pipeline where the second one-way valve is located; when the oil guide pipe pumps oil outwards, the first one-way valve closes the oil guide channel of the first pipeline, and the second pipeline with the second one-way valve can guide oil smoothly.
Furthermore, in the supporting device with the collapse preventing structure for trench excavation, the outer end of the pressing rod is used as a movable end, and the movable end can be provided with the extension rod in a clamping or screwing mode.
Further, in the supporting device with the collapse preventing structure for trench excavation, the hydraulic driving piece is a manual hydraulic rod or an electric hydraulic rod.
The beneficial effects of the invention are as follows:
1. The anti-collapse pressing component is reasonable in structural design, the hydraulic driving piece is connected with the anti-collapse pressing component through the hydraulic pipe with the connector based on the hydraulic principle, the movable end of the anti-collapse pressing component is further controlled to axially displace, the pressure sensor is arranged in the pressing positioning hole, and when the pressure of the pressure sensor is smaller than a set value, the pressure can be applied in real time, so that reliable support of the support wallboard is met.
2. The anti-seepage support assembly is reasonable in structural design, the anti-seepage support assembly is installed by using piling equipment of the U-shaped Larson steel sheet piles, an inner cavity of the insertion pipe can be used as a water pumping cavity after the installation, and seepage in a seepage area can be rapidly and continuously pumped out by matching with the seepage drainage holes, so that the seepage problem is greatly improved.
Of course, it is not necessary for any one product to practice the invention to achieve all of the advantages set forth above at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic perspective view of the whole structure of the present invention;
FIG. 2 is a schematic top view of the entire structure of the present invention;
FIG. 3 is a schematic diagram of the overall front view structure of the present invention;
FIG. 4 is a schematic view of the construction of the impermeable support assembly of the present invention;
FIG. 5 is a schematic view of the construction of the pressure-receiving member according to the present invention;
FIG. 6 is a schematic view showing the assembly of the collapse preventing pressure applying member and the hydraulic tube according to the present invention;
FIG. 7 is a schematic view showing an internal structure of the collapse preventing pressure applying member according to the present invention;
FIG. 8 is a schematic cross-sectional view of FIG. 7 taken along the line A-A;
In the drawings, the reference numerals of the components are as follows:
1-supporting wallboard, 2-seepage-proofing supporting component, 201-pressing plate, 202-inserting plate, 203-inserting pipe, 204-inserting plate, 205-fastening nail, 206-fastening seat, 207-supporting block, 208-water pumping cavity, 209-seepage drainage hole, 3-pressure-bearing member, 301-pressing positioning hole, 4-collapse-proofing pressing member, 401-cylindrical body, 402-annular cavity, 403-piston, 404-hydraulic oil chamber, 405-movable chamber, 406-pressing rod, 407-oil guiding pipe, 408-first pipeline, 409-second pipeline, 5-hydraulic pipe and 6-joint.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
Referring to fig. 1 to 8, the present embodiment is a supporting device with an anti-collapse structure for trench excavation, which includes a supporting wall plate 1, an anti-seepage supporting component 2, a pressure-bearing member 3 and an anti-collapse pressing member 4.
In this embodiment, the supporting wall boards 1 are two rows, the supporting wall boards 1 are surrounded by a plurality of U-shaped lason steel sheet piles, the relatively protruding portions of the inner sides of the supporting wall boards 1 are used as pressing portions, the outer side areas of the pressing portions of the supporting wall boards 1 are used as seepage areas, and the connecting ends of the two connected U-shaped lason steel sheet piles are located in the seepage areas.
In this embodiment, the anti-seepage support assembly 2 includes a pressing plate 201, a plugboard 202, a cannula 203 and a supporting block 207, wherein the plugboard 202 is fixed at the lower end of one side of the pressing plate 201, and the bottom end of the plugboard 202 is a pointed end. The lower end of the other side of the pressing plate 201 is fixed with a cannula 203, and the plugboard 202 is provided with a plurality of supporting brackets for supporting the pressure-bearing member 3 along the length direction. The underside of the support bracket 207 is provided with a fastening seat 206 matched with the fastening nail 205, and the plugboard 204 is provided with a perforation matched with the fastening nail. The insertion plates 202 are distributed in the inner side area of the supporting and pressing part of the supporting and protecting wallboard 1, and the insertion pipes 203 are distributed in the outer side water seepage area of the supporting and protecting wallboard 1; the inner cavity of the cannula 203 is used as a water pumping cavity 208, and the tube body of the cannula 203 is provided with a plurality of water seepage drainage holes 209 communicated with the inner cavity along the length direction.
In the embodiment, the pressure-bearing member 3 is abutted against the inner side of the support wallboard 1 through the seepage-proofing support assembly 2; the pressure-bearing member 3 is a rectangular pressure-bearing pipe, and the outer wall of the side plate is provided with a pressing positioning hole 301.
In this embodiment, the two sides of the collapse-preventing pressing member 4 are movable ends, and each movable end abuts against the pressure-receiving member 3 on the corresponding side. The hydraulic driving part is connected with the collapse-preventing pressing part 4 through a hydraulic pipe 5 with a joint 6, and further controls the movable end of the collapse-preventing pressing part 4 to axially displace.
In this embodiment, the collapse-preventing pressing member 4 includes a cylindrical body 401, a cylindrical cavity and an annular cavity 402 are provided in the interior of the cylindrical body 401, the cylindrical cavity is partitioned by two pistons 403 into a hydraulic oil chamber 404 in the middle and movable chambers 405 at both ends, and at least one ring of piston seal 410 is mounted on the outer periphery of the pistons 403. A plunger 403 is fixedly mounted on the side of the movable chamber 405 adjacent to the end of the cylindrical body 401 with a pressing rod 406. The cylindrical body 401 is provided with an oil guide pipe 407 in a penetrating way, the oil guide pipe 407 is communicated with the hydraulic oil chamber 404 through a first pipeline 408, the first pipeline 408 is provided with a first one-way valve, the oil guide pipe 407 is communicated with the annular cavity 402 through a second pipeline 409, and the second pipeline 409 is provided with a second one-way valve.
In this embodiment, the oil guide pipes 407 of the collapse prevention pressure applying members 4 in the same row are connected to the same hydraulic pipe 5. When the oil guide pipe 407 feeds oil inwards, the first pipeline 408 where the first one-way valve is located can smoothly guide oil, and the second one-way valve closes an oil guide channel of the second pipeline 409 where the second one-way valve is located; when the oil guide pipe 107 pumps oil outwards, the first one-way valve closes the oil guide channel of the first pipeline 408, and the second pipeline 409 where the second one-way valve is located can guide oil smoothly.
In this embodiment, the outer end of the pressing rod 406 is used as a movable end, and the pressing rod 406 directly presses into the pressing positioning hole 301.
In this embodiment, the hydraulic driving member is a manual hydraulic rod or an electric hydraulic rod.
One specific application of this embodiment is: in this embodiment, the anti-collapse pressing component 4 has reasonable structural design, and based on the hydraulic principle, the hydraulic driving piece is connected with the anti-collapse pressing component 4 through the hydraulic pipe 5 with the joint 6, so as to control the movable end of the anti-collapse pressing component 4 to perform axial displacement, and the pressure sensor is installed in the pressing positioning hole 301, so that when the pressure of the pressure sensor is smaller than a set value, the hydraulic oil chamber 404 can be pressurized in real time through the hydraulic driving piece, and further reliable support of the support wallboard 1 is satisfied. The anti-seepage support component 2 is reasonable in structural design, the anti-seepage support component 2 is installed by using piling equipment of U-shaped Larson steel sheet piles, after installation, besides supporting pressure-bearing members, the inner cavity of the insertion tube 203 can be used as the water pumping cavity 208, and water seepage in a water seepage area can be continuously pumped out rapidly by matching with the water seepage drainage holes 209, so that the water seepage problem is greatly improved.
Example two
The embodiment is a supporting device with an anti-collapse structure for trench excavation, which comprises a supporting wallboard 1, an anti-seepage supporting component 2, a pressure-bearing member 3 and an anti-collapse pressing member 4.
In this embodiment, the supporting wall boards 1 are two rows, the supporting wall boards 1 are surrounded by a plurality of U-shaped lason steel sheet piles, the relatively protruding portions of the inner sides of the supporting wall boards 1 are used as pressing portions, the outer side areas of the pressing portions of the supporting wall boards 1 are used as seepage areas, and the connecting ends of the two connected U-shaped lason steel sheet piles are located in the seepage areas.
In this embodiment, the anti-seepage support assembly 2 includes a pressing plate 201, a plugboard 202, a cannula 203 and a supporting block 207, wherein the plugboard 202 is fixed at the lower end of one side of the pressing plate 201, and the bottom end of the plugboard 202 is a pointed end. The lower end of the other side of the pressing plate 201 is fixed with a cannula 203, and the plugboard 202 is provided with a plurality of supporting brackets for supporting the pressure-bearing member 3 along the length direction. The underside of the support bracket 207 is provided with a fastening seat 206 matched with the fastening nail 205, and the plugboard 204 is provided with a perforation matched with the fastening nail. The insertion plates 202 are distributed in the inner side area of the supporting and pressing part of the supporting and protecting wallboard 1, and the insertion pipes 203 are distributed in the outer side water seepage area of the supporting and protecting wallboard 1; the inner cavity of the cannula 203 is used as a water pumping cavity 208, and the tube body of the cannula 203 is provided with a plurality of water seepage drainage holes 209 communicated with the inner cavity along the length direction.
In the embodiment, the pressure-bearing member 3 is abutted against the inner side of the support wallboard 1 through the seepage-proofing support assembly 2; the pressure-bearing member 3 is a rectangular pressure-bearing pipe, and the outer wall of the side plate is provided with a pressing positioning hole 301.
In this embodiment, the two sides of the collapse-preventing pressing member 4 are movable ends, and each movable end abuts against the pressure-receiving member 3 on the corresponding side. The hydraulic driving part is connected with the collapse-preventing pressing part 4 through a hydraulic pipe 5 with a joint 6, and further controls the movable end of the collapse-preventing pressing part 4 to axially displace.
In this embodiment, the collapse-preventing pressing member 4 includes a cylindrical body 401, a cylindrical cavity and an annular cavity 402 are provided in the interior of the cylindrical body 401, the cylindrical cavity is partitioned by two pistons 403 into a hydraulic oil chamber 404 in the middle and movable chambers 405 at both ends, and at least one ring of piston seal 410 is mounted on the outer periphery of the pistons 403. A plunger 403 is fixedly mounted on the side of the movable chamber 405 adjacent to the end of the cylindrical body 401 with a pressing rod 406. The cylindrical body 401 is provided with an oil guide pipe 407 in a penetrating way, the oil guide pipe 407 is communicated with the hydraulic oil chamber 404 through a first pipeline 408, the first pipeline 408 is provided with a first one-way valve, the oil guide pipe 407 is communicated with the annular cavity 402 through a second pipeline 409, and the second pipeline 409 is provided with a second one-way valve.
In this embodiment, the oil guide pipes 407 of the collapse prevention pressure applying members 4 in the same row are connected to the same hydraulic pipe 5. When the oil guide pipe 407 feeds oil inwards, the first pipeline 408 where the first one-way valve is located can smoothly guide oil, and the second one-way valve closes an oil guide channel of the second pipeline 409 where the second one-way valve is located; when the oil guide pipe 107 pumps oil outwards, the first one-way valve closes the oil guide channel of the first pipeline 408, and the second pipeline 409 where the second one-way valve is located can guide oil smoothly.
In this embodiment, the outer end of the pressing rod 406 is used as a movable end, and the movable end is provided with an extension rod in a clamping or screwing manner, and the outer end of the extension rod is pressed into the pressing positioning hole 301.
In this embodiment, the hydraulic driving member is a manual hydraulic rod.
Example III
The embodiment is a supporting device with an anti-collapse structure for trench excavation, which comprises a supporting wallboard 1, an anti-seepage supporting component 2, a pressure-bearing member 3 and an anti-collapse pressing member 4.
In this embodiment, the supporting wall boards 1 are two rows, the supporting wall boards 1 are surrounded by a plurality of U-shaped lason steel sheet piles, the relatively protruding portions of the inner sides of the supporting wall boards 1 are used as pressing portions, the outer side areas of the pressing portions of the supporting wall boards 1 are used as seepage areas, and the connecting ends of the two connected U-shaped lason steel sheet piles are located in the seepage areas.
In this embodiment, the anti-seepage support assembly 2 includes a pressing plate 201, a plugboard 202, a cannula 203 and a supporting block 207, wherein the plugboard 202 is fixed at the lower end of one side of the pressing plate 201, and the bottom end of the plugboard 202 is a pointed end. The lower end of the other side of the pressing plate 201 is fixed with a cannula 203, and the plugboard 202 is provided with a plurality of supporting brackets for supporting the pressure-bearing member 3 along the length direction. The underside of the support bracket 207 is provided with a fastening seat 206 matched with the fastening nail 205, and the plugboard 204 is provided with a perforation matched with the fastening nail. The insertion plates 202 are distributed in the inner side area of the supporting and pressing part of the supporting and protecting wallboard 1, and the insertion pipes 203 are distributed in the outer side water seepage area of the supporting and protecting wallboard 1; the inner cavity of the cannula 203 is used as a water pumping cavity 208, and the tube body of the cannula 203 is provided with a plurality of water seepage drainage holes 209 communicated with the inner cavity along the length direction.
In the embodiment, the pressure-bearing member 3 is abutted against the inner side of the support wallboard 1 through the seepage-proofing support assembly 2; the pressure-bearing member 3 is a rectangular pressure-bearing pipe, and the outer wall of the side plate is provided with a pressing positioning hole 301.
In this embodiment, the two sides of the collapse-preventing pressing member 4 are movable ends, and each movable end abuts against the pressure-receiving member 3 on the corresponding side. The hydraulic driving part is connected with the collapse-preventing pressing part 4 through a hydraulic pipe 5 with a joint 6, and further controls the movable end of the collapse-preventing pressing part 4 to axially displace.
In this embodiment, the collapse-preventing pressing member 4 includes a cylindrical body 401, a cylindrical cavity and an annular cavity 402 are provided in the interior of the cylindrical body 401, the cylindrical cavity is partitioned by two pistons 403 into a hydraulic oil chamber 404 in the middle and movable chambers 405 at both ends, and at least one ring of piston seal 410 is mounted on the outer periphery of the pistons 403. A plunger 403 is fixedly mounted on the side of the movable chamber 405 adjacent to the end of the cylindrical body 401 with a pressing rod 406. The cylindrical body 401 is provided with an oil guide pipe 407 in a penetrating way, the oil guide pipe 407 is communicated with the hydraulic oil chamber 404 through a first pipeline 408, the first pipeline 408 is provided with a first one-way valve, the oil guide pipe 407 is communicated with the annular cavity 402 through a second pipeline 409, and the second pipeline 409 is provided with a second one-way valve.
In this embodiment, the oil guide pipes 407 of the collapse prevention pressure applying members 4 in the same row are connected to the same hydraulic pipe 5. When the oil guide pipe 407 feeds oil inwards, the first pipeline 408 where the first one-way valve is located can smoothly guide oil, and the second one-way valve closes an oil guide channel of the second pipeline 409 where the second one-way valve is located; when the oil guide pipe 107 pumps oil outwards, the first one-way valve closes the oil guide channel of the first pipeline 408, and the second pipeline 409 where the second one-way valve is located can guide oil smoothly.
In this embodiment, the outer end of the pressing rod 406 is used as a movable end, and the movable end is provided with an extension rod in a clamping or screwing manner, and the outer end of the extension rod is pressed into the pressing positioning hole 301.
In this embodiment, the hydraulic driving member is an electro-hydraulic rod.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (4)
1. The utility model provides a supporting device with anti-collapse structure for trench excavation which characterized in that includes:
The support wallboard comprises two rows, the support wallboard is formed by surrounding a plurality of U-shaped Larson steel sheet piles, the relatively protruding parts of the inner sides of the support wallboard are used as pressing parts, the outer side areas of the pressing parts of the support wallboard are used as seepage areas, and the connecting ends of the two U-shaped Larson steel sheet piles are connected in the seepage areas;
the anti-seepage support assembly comprises a pressing plate, an inserting plate, inserting pipes and supporting blocks, wherein the inserting plate is fixed at the lower end of one side of the pressing plate, the inserting pipes are fixed at the lower end of the other side of the pressing plate, and a plurality of supporting blocks for supporting the pressure-bearing member are arranged on the inserting plates along the length direction;
The pressure-bearing member is abutted against the inner side of the support wallboard through the seepage-proof support assembly;
The hydraulic driving piece is connected with the collapse-preventing pressing part through a hydraulic pipe with a joint, so that the movable ends of the collapse-preventing pressing part are controlled to axially displace; the anti-collapse pressing part comprises a cylindrical body, a cylindrical cavity and an annular cavity are arranged in the cylindrical body, the cylindrical cavity is divided into a hydraulic oil chamber in the middle and movable chambers at two ends by two pistons, and a pressing rod extending out of the end part of the cylindrical body is fixedly arranged on one side, close to the movable chambers, of the pistons; the cylindrical body is provided with an oil guide pipe in a penetrating mode, the oil guide pipe is communicated with the hydraulic oil chamber through a first pipeline, the first pipeline is provided with a first one-way valve, the oil guide pipe is communicated with the annular cavity through a second pipeline, and the second pipeline is provided with a second one-way valve; the oil guide pipes of the collapse-preventing pressing parts which are arranged in the same row are connected to the same hydraulic pipe, when the oil guide pipes are used for feeding oil inwards, the first pipeline where the first one-way valve is located can smoothly guide oil, and the second one-way valve is used for closing an oil guide channel of the second pipeline where the second one-way valve is located; when the oil guide pipe pumps oil outwards, the first one-way valve closes the oil guide channel of the first pipeline where the first one-way valve is located, and the second pipeline where the second one-way valve is located can be smoothly guided;
the lower side of the supporting bracket is provided with a fastening seat matched with the fastening nail, and the plugboard is provided with a perforation matched with the fastening nail;
The inserting plates are distributed in the inner side area of the supporting and protecting wallboard pressing part, and the inserting pipes are distributed in the outer side water seepage area of the supporting and protecting wallboard pressing part; the inner cavity of the cannula is used as a water pumping cavity, and a plurality of water seepage drainage holes communicated with the inner cavity of the cannula are formed in the length direction of the cannula body.
2. The support device with an anti-collapse structure for trench excavation according to claim 1, wherein: the pressure-bearing member is a rectangular pressure-bearing pipe, and the outer wall of the side plate of the pressure-bearing member is provided with a pressing positioning hole.
3. The support device with an anti-collapse structure for trench excavation according to claim 1, wherein: the outer end of the pressing rod serves as a movable end, and the movable end can be provided with an extension rod in a clamping or screwing mode.
4. The support device with an anti-collapse structure for trench excavation according to claim 1, wherein: the hydraulic driving part is a manual hydraulic rod or an electric hydraulic rod.
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| CN114622576A (en) | 2022-06-14 |
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