CN114837492B - Underground passage cover-excavation-method fence structure and construction process - Google Patents
Underground passage cover-excavation-method fence structure and construction process Download PDFInfo
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- CN114837492B CN114837492B CN202210564023.XA CN202210564023A CN114837492B CN 114837492 B CN114837492 B CN 114837492B CN 202210564023 A CN202210564023 A CN 202210564023A CN 114837492 B CN114837492 B CN 114837492B
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 14
- 238000009412 basement excavation Methods 0.000 claims abstract description 20
- 238000013016 damping Methods 0.000 claims description 26
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H17/00—Fencing, e.g. fences, enclosures, corrals
- E04H17/14—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts
- E04H17/16—Fences constructed of rigid elements, e.g. with additional wire fillings or with posts using prefabricated panel-like elements, e.g. wired frames
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The application relates to an underground passage cover-excavation fence structure and a construction process, and relates to the field of underground passage construction technology. The application has the effect of improving the composition efficiency of the fence structure.
Description
Technical Field
The application relates to the technical field of underground passage construction, in particular to an underground passage cover-excavation fence structure and a construction process.
Background
When underground engineering is applied and needs to pass through barriers such as roads and buildings, a cover-excavation method is introduced to avoid influencing traffic. In the cover excavation method operation process, firstly, a fence structure is utilized to carry out closed management on an area to be constructed, and then a certain depth is excavated downwards at a position defined in the closed management area so as to carry out subsequent construction of an underground passage.
In the related art, the prior fence structure is generally formed by splicing plates to achieve the enclosing effect, and the connection between the plates is generally fixed through iron wires and the like, so that the plates are not easy to separate in the use process.
Aiming at the related technology, the inventor considers that the operation of connecting and fixing the plates by utilizing the iron wires is too complicated, the workload is large, the rapid composition of the fence structure is inconvenient, the overall working efficiency is low, and the improvement space is still provided.
Disclosure of Invention
In order to improve the composition efficiency of the fence structure, the application provides a fence structure by a basement channel cover-excavation method and a construction process.
In a first aspect, the present application provides a fence structure for underground passage cover digging, which adopts the following technical scheme:
the utility model provides a basement lid digs method rail structure, includes a plurality of plates, first connecting piece and second connecting piece, first connecting piece sets up in one side of plate, the second connecting piece sets up in the opposite side of plate and can articulate with the first connecting piece of another plate, the rotation hole has been seted up on the first connecting piece, the second connecting piece includes hinge plate and dwang, the dwang sets up on the hinge plate and has locking state and unblock state on the hinge plate, works as the dwang is in when locking state, the dwang peg graft in the rotation hole so that first connecting piece with the second connecting piece is connected fixedly, works as the dwang is in when unblock state, the dwang not peg graft in the rotation hole so that first connecting piece can with the second connecting piece phase separation.
Through adopting above-mentioned technical scheme, when needs splice the combination to rail structure, utilize first connecting piece on the plate can with the second connecting piece lug connection of another plate, the cooperation of rethread dwang and pivoted hole is fixed in order to realize the connection of first connecting piece and second connecting piece to realize the concatenation between the plate fixedly, simultaneously, the plate after the concatenation articulates each other, can be according to actual conditions with the plate angle of placing of selecting, improves rail structure use limit convenience.
Optionally, the rotation hole sets up in the symmetry on first connecting piece length direction, the second connecting piece still includes the rotating block of rotating connection on the hinge board, the one end coaxial first bevel gear that is provided with of rotating block, first bevel gear has two second bevel gears of meshing simultaneously, the second bevel gear is in axial fixity hinge inboard, two offer the screw hole that the screw line is opposite on the second bevel gear, dwang threaded connection is in screw hole.
Through adopting above-mentioned technical scheme, when needs realize that the connection of first connecting piece and second connecting piece is fixed, align first connecting piece and second connecting piece, and control the turning block and rotate in order to drive first bevel gear and rotate, the second bevel gear of meshing in first bevel gear rotates, because the second bevel gear is spacing in the axial, the dwang of threaded connection on the second bevel gear moves under the effect of second bevel gear this moment, in order to realize the dwang grafting in the rotation hole, make two rotation holes peg graft simultaneously into the dwang, the staff of being convenient for carries out the connection to first connecting piece and second connecting piece and fixes, thereby further improve rail structure and constitute efficiency.
Optionally, the rotating block includes rotation portion and connecting portion, the connecting hole has been seted up on the hinge board, the connecting portion peg graft in the connecting hole, just the one end coaxial coupling that rotation portion was kept away from to the connecting portion is on first bevel gear, the fixed slot has been seted up towards the one end opening edge department of rotation portion to the connecting hole, it is connected with spacing ball to slide in the fixed slot, it is equipped with the damping groove that can supply spacing ball to peg graft along circumference interval on the rotation portion, spacing ball has first state and second state, works as spacing ball is in when first state, spacing ball stretches out the fixed slot opening and peg graft in the damping inslot away from the one end of fixed slot, spacing ball is in when second state, spacing ball contracts in the damping inslot.
Through adopting above-mentioned technical scheme, when rotating the portion, the portion of rotating can extrude spacing ball in order to realize the normal rotation of portion of rotating, and after the portion of rotating rotated, spacing ball can peg graft in the damping inslot, and when the environment that rail structure was located shakes, if spacing ball is in the damping inslot can make the portion of rotating be difficult for rotating to reduce the portion of rotating and make the unstable condition of plate connection take place.
Optionally, be provided with the support on the cross section of fixed slot in perpendicular to axial, be provided with on the support and place the box, place the box and enclose with the support and close and form and place the chamber, spacing ball is spacing in placing the chamber, offer on the support and supply spacing ball to expose the exposure hole with damping groove butt.
Through adopting above-mentioned technical scheme, the formation in placing the chamber can make spacing ball be difficult for dropping to make spacing ball can normal use.
Optionally, the intercommunicating pore has been seted up towards the one end of fixed slot bottom surface on placing the box, it is connected with first magnetic path to place to slide along the connecting hole axial in the box, first magnetic path is inhaled mutually with spacing ball, be provided with the movable block that slides along the fixed slot axial in the fixed slot, the movable block covers the fixed slot cross section, the one end towards first magnetic path on the movable block is provided with the second magnetic path that repels with first magnetic path.
Through adopting the technical scheme, when the rotating part rotates, the limiting ball moves towards the bottom surface direction of the fixed groove under the pressure action of the rotating part, at the moment, the first magnetic block moves towards the bottom surface direction of the fixed groove under the action of the limiting ball, the repulsive force of the first magnetic block on the second magnetic block is increased so as to enable the second magnetic block to move towards the bottom surface direction of the fixed groove, and at the moment, the moving block moves so as to compress the air in the fixed groove, so that the air pressure is increased; when the damping groove on the rotating part is aligned with the limit ball, the extrusion force born by the limit ball is cancelled, and at the moment, the movable block can move towards the opening direction of the fixed groove due to the fact that the internal air pressure is large, so that the second magnetic block approaches the first magnetic block, the movement of the first magnetic block is realized, the limit ball moves from the second state to the first state, and the fixing of the limit ball is realized.
Optionally, a rolling groove attached to the limit ball is formed in the first magnetic block.
Through adopting above-mentioned technical scheme, at the pivoted in-process of rotation portion, the local rotation appears easily by the influence of rotation portion frictional force to spacing ball, and the setting of rolling groove can make the better rotation of spacing ball this moment, improves rotation portion pivoted smoothness nature.
Optionally, the lateral wall that movable block and fixed slot laminate has offered the seal groove along movable block circumference, interference fit has the sealing washer in the seal groove.
Through adopting above-mentioned technical scheme, can improve the gas tightness of the cavity that forms between fixed slot bottom and the movable block to make the outside pressure on the spacing ball cancel after, the movable block can remove under the effect of atmospheric pressure.
Optionally, an elastic element is arranged at the bottom of the fixed slot and is abutted to one end, far away from the second magnetic block, of the moving block.
Through adopting above-mentioned technical scheme, when the movable block removes to fixed slot bottom surface direction, the movable block can extrude the elastic component to make the elastic component produce the effort towards fixed slot opening direction, when the movable block removes to fixed slot opening direction, the movable block can be more quick the removal under the effect of elastic component, reduces the movable block and resets long time.
Optionally, the elastic component includes soft portion and hard portion, the one end of hard portion is fixed in the fixed slot bottom surface, soft portion is fixed in the hard portion and keeps away from the one end of fixed slot bottom surface, soft portion keeps away from the one end butt in the movable block of hard portion, the elastic component encloses with the fixed slot bottom surface and closes and form the air cavity.
Through adopting above-mentioned technical scheme, when the elastic component receives the movable block extrusion, the deformation condition appears in soft portion, and the difficult deformation condition that appears in hard portion to make the elastic component use comparatively fixedly.
In a second aspect, the application provides a construction process of a cover-excavation method for an underground passage, which adopts the following technical scheme:
an underground passage cover-excavation construction process using the underground passage cover-excavation fence structure as described above, comprising at least the steps of:
s1, closing a first-stage construction area;
s2, connecting the plates to form a fence structure, and performing foundation reinforcement and upright post construction;
s3, excavating a foundation pit to a depth below the cover plate girder, and taking the construction-type girder as the cover plate girder;
s4, paving a steel pavement cover plate to form a temporary pavement and enabling the pavement to pass through traffic;
s5, continuously excavating underground below the first support, and constructing the first support;
s6, sequentially excavating downwards and erecting supports until the bottom of the foundation pit;
s7, constructing an internal structure of the underground passage;
s8, removing the temporary pavement, backfilling the soil, and building the permanent road.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the first connecting piece and the second connecting piece can be used for realizing rapid splicing between the plates, so that the composition efficiency of the fence structure is improved;
2. the arrangement of the limiting ball can ensure that the plate is not easy to separate due to vibration in the use process, so that the use stability of the fence structure is improved;
3. the first magnetic block and the second magnetic block are utilized to realize the switching of the state of the limiting ball, so that the whole object is less in moving abrasion.
Drawings
FIG. 1 is a schematic view of a structure of an underground passage cover-excavation fence according to an embodiment of the present application;
FIG. 2 is a schematic view of the first connector and the second connector according to the embodiment of the present application;
FIG. 3 is a cross-sectional view of an embodiment of the present application when a first connector is connected to a second connector;
fig. 4 is an enlarged view of a portion a in fig. 3.
Reference numerals illustrate: 1. a plate member; 2. a first connector; 201. a first fixing portion; 202. a hinge part; 3. a second connector; 301. a rotating lever; 302. a hinge plate; 3021. a second fixing portion; 3022. a connecting block; 303. a rotating block; 3031. a rotating part; 3032. a connection part; 4. a rotation hole; 5. a first bevel gear; 6. a second bevel gear; 7. a threaded hole; 8. a connection hole; 9. a fixing groove; 10. limiting balls; 11. a damping groove; 12. a bracket; 13. placing a box; 14. a placement cavity; 15. exposing the hole; 16. a communication hole; 17. a first magnetic block; 18. a moving block; 19. a second magnetic block; 20. a rolling groove; 21. sealing grooves; 22. a seal ring; 23. an elastic member; 2301. a soft part; 2302. a hard part; 24. an air cavity; 25. and (5) turning to the identification.
Detailed Description
The application is described in further detail below with reference to fig. 1-4.
The embodiment of the application discloses a fence structure of an underground passage cover digging method. Referring to fig. 1, the underground passage cover-excavation fence structure includes a plurality of plate members 1, the plate members 1 are rectangular in external shape, and the plate members 1 are connected to each other to enclose the fence. In order to facilitate the connection between the plate members 1, a first connecting member 2 is disposed at one end of the plate member 1 in the length direction, and a second connecting member 3 capable of being connected with the first connecting member 2 is disposed at the other end of the plate member 1 in the length direction, wherein the first connecting member 2 and the second connecting member 3 are fixed to the plate member 1 by screws. When the first connecting piece 2 is connected and fixed with the second connecting piece 3, the plate 1 is connected and fixed with the plate 1, and in order to improve the stability between the connection of the plate 1, the number of the first connecting pieces 2 and the second connecting pieces 3 on each plate 1 is at least two, in this embodiment, two are illustrated, and the two first connecting pieces 2 and the two second connecting pieces 3 are symmetrically arranged in the height direction of the plate 1. Meanwhile, after the plate 1 is fixedly connected, the plate 1 and the plate 1 can be hinged, so that the plate 1 can determine the included angle between the plate 1 and the plate 1 according to the actual requirement of a construction area, and the plate can be enclosed according to the shape of the actual construction area.
Referring to fig. 1 and 2, the first connector 2 includes a first fixing portion 201 and two hinge portions 202, the first fixing portion 201 is detachably fixed to the board 1 by a screw, the hinge portions 202 are integrally formed at one end of the first fixing portion 201 away from the center of the board 1, and the two hinge portions 202 are respectively disposed at two ends of the first fixing portion 201 in the length direction. The hinge portion 202 is provided with a rotation hole 4 along the longitudinal direction of the first fixing portion 201, the cross-sectional shape of the rotation hole 4 is circular, and the two rotation holes 4 are disposed opposite to each other. The second connecting piece 3 includes hinge plate 302 and two dwang 301, and hinge plate 302 includes second fixed part 3021 and connecting block 3022, and connecting block 3022 welds on second fixed part 3021, and second fixed part 3021 passes through the fix with screw on plate 1 in order to realize the fixed of second connecting piece 3 on plate 1, and two dwang 301 peg graft on connecting block 3022, and dwang 301 can follow second fixed part 3021 length direction on connecting block 3022 and remove, and dwang 301's shape is the cylinder, and its cross sectional shape size is unanimous with rotation hole 4 cross sectional shape size. The rotating rod 301 has a locking state and an unlocking state in the process of sliding on the connecting block 3022, when the rotating rod 301 is in the locking state, the rotating rod 301 extends in a direction away from the connecting block 3022, at this time, if the first fixing portion 201 is aligned with the second fixing portion 3021, the rotating rod 301 can be inserted into the rotating hole 4, so as to achieve connection and fixation of the first fixing portion 201 and the second fixing portion 3021, and the first fixing portion 201 and the second fixing portion 3021 can rotate relative to each other, so that rotation between the plate 1 and the plate 1 is achieved. When the rotation lever 301 is in the unlock state, the rotation lever 301 is contracted in a direction approaching the connection block 3022, and at this time, the connection of the first fixing portion 201 and the second fixing portion 3021 is canceled, and the first fixing portion 201 can be separated from the second fixing portion 3021.
Referring to fig. 2 and 3, in order to facilitate the fixing of the first connector 2 and the second connector 3, the second connector 3 further includes a rotating block 303, the rotating block 303 includes a rotating portion 3031 and a connecting portion 3032, the outer shapes of the rotating portion 3031 and the connecting portion 3032 are cylindrical and are coaxially arranged, a connecting hole 8 is formed in the connecting portion 3022, the cross-sectional shape of the connecting hole 8 is circular, the axial direction of the connecting hole 8 is perpendicular to the axial direction of the rotating rod 301, and the aperture size of the connecting hole 8 is equal to the outer diameter size of the connecting portion 3032 so that the connecting portion 3032 can be inserted into the connecting hole 8. The rotating portion 3031 is located outside the connecting block 3022, the rotating block 303 is attached to the outer surface of the connecting block 3022, a first bevel gear 5 is welded and fixed to one end, away from the rotating portion 3031, of the connecting portion 3032, and the first bevel gear 5 and the connecting portion 3032 are coaxially arranged. The second bevel gears 6 are engaged on the surfaces of the two sides of the first bevel gears 5 facing the two rotating holes 4, and the two second bevel gears 6 are coaxially arranged, and the second bevel gears 6 are limited by the inside of the connecting block 3022 at the two axial sides of the second bevel gears 6 and cannot move along the axial direction of the second bevel gears 6. The middle part of the second bevel gear 6 is provided with threaded holes 7 along the second bevel gear 6 in a penetrating way, the threads of the two threaded holes 7 face opposite directions, and the rotating rod 301 is in threaded connection with the threaded holes 7. When the staff needs to realize the fixation of first connecting piece 2 and second connecting piece 3, with first connecting piece 2 and second connecting piece 3 alignment, rotate the turning block 303 again so that first bevel gear 5 rotates, two second bevel gears 6 can rotate under the effect of first bevel gear 5 this moment, because second bevel gear 6 is spacing by the axial, the dwang 301 that threaded connection was on second bevel gear 6 this moment moves along its axial, because two screw hole 7 screw opposite directions, dwang 301 can remove and insert in the rotation hole 4 to the rotation hole 4 direction this moment, in order to realize the fixation of first connecting piece 2 and second connecting piece 3, thereby make the staff can be comparatively convenient realize the fixation of first connecting piece 2 and second connecting piece 3. In order to facilitate the locking and unlocking of the first connector 2 and the second connector 3 by the operator, a turning indicator 25 may be provided at an end of the turning portion 3031 remote from the connecting portion 3032, so as to define the rotation fixing direction thereof, and reduce the occurrence of reverse rotation when the first connector 2 and the second connector 3 are fixed by the operator.
Referring to fig. 3 and 4, in order to reduce the occurrence of the rotation of the rotating block 303 caused by the vibration of the construction area, a plurality of damping grooves 11 are formed in the end surface of the rotating portion 3031, to which the connecting portion 3032 is connected, at intervals along the circumferential direction of the rotating portion 3031, a plurality of fixing grooves 9 are formed in the end surface of the connecting portion 3022, which is attached to the rotating portion 3031, the radial cross-section of the fixing grooves 9 is circular, the axis of the fixing grooves 9 is perpendicular to the end surface, a limit ball 10 is axially slidably provided in the fixing grooves 9 along the fixing grooves 9, and the limit ball 10 is in the shape of a sphere. The limiting ball 10 is in a first state and a second state in the fixed groove 9, when the limiting ball 10 is in the first state, one end of the limiting ball 10, which is far away from the bottom surface of the fixed groove 9, can extend out of the opening of the fixed groove 9 and be inserted into the damping groove 11, and the surface of the limiting ball 10 is completely attached to the side wall of the damping groove 11; when the limit ball 10 is in the second state, the limit ball 10 is contracted in the fixed groove 9, and at this time, the cooperation between the limit ball 10 and the damping groove 11 is canceled. When the rotating block 303 needs to rotate, the limiting ball 10 is placed in the second state, at this time, the rotating block 303 can rotate more conveniently, when the rotating block 303 does not need to rotate, the limiting ball 10 is placed in the first state, so that the limiting ball 10 is clamped with the damping groove 11, and the possibility that the rotating block 303 rotates due to construction vibration is reduced.
In order to facilitate the state switching of the control limit ball 10, a bracket 12 is welded in the fixed groove 9, the bracket 12 is arc-shaped, the bracket 12 covers the section of the fixed groove 9, an exposing hole 15 is formed in the bracket 12, a part of the limit ball 10 can extend out of the exposing hole 15 so as to realize the matching of the limit ball 10 and the damping groove 11, and the diameter of the exposing hole 15 on the bracket 12 is smaller than that of the limit ball 10, so that the limit ball 10 cannot completely fall out of the fixed groove 9. The placing box 13 is welded and fixed at one end of the support 12 facing the bottom surface of the fixing groove 9, the outer shape of the placing box 13 is a cylinder, one end of the placing box 13 is provided with an opening and is hollow, one end of the opening faces the support 12 to enable the placing box 13 and the support 12 to enclose to form a placing cavity 14, and the limiting ball 10 is positioned in the placing cavity 14. The first magnetic block 17 is magnetically attracted to one end, far away from the damping groove 11, of the limiting ball 10, the first magnetic block 17 is cylindrical, the first magnetic block 17 and the placing box 13 are coaxially arranged, and meanwhile the first magnetic block 17 covers the inner section of the placing box 13, so that the first magnetic block 17 can slide in the placing cavity 14. The movable block 18 is slidably connected in the fixed groove 9, the size of the cross section of the movable block 18 is consistent with that of the cross section of the fixed groove 9, a second magnetic block 19 which is magnetically repulsed with the first magnetic block 17 is glued on one end, far away from the bottom surface of the fixed groove 9, of the movable block 18, the first magnetic block 17 and the second magnetic block 19 are oppositely arranged, and a communication hole 16 is formed in one end, far away from the bracket 12, of the placement box 13, so that the first magnetic block 17 can perform repulsive force action with the second magnetic block 19. When the rotating block 303 is rotated by external driving force, the limit ball 10 moves towards the bottom surface of the fixed slot 9 under the extrusion action of the side wall of the damping slot 11, at this time, the first magnetic block 17 moves towards the second magnetic block 19, and the second magnetic block 19 moves towards the bottom surface of the fixed slot 9 under the action of repulsive force, so that the air pressure of the space formed by the surrounding of the bottom surface of the fixed slot 9 and the moving block 18 is increased; when the rotating block 303 rotates to align the damping groove 11 with the limit ball 10, the external extrusion force of the limit ball 10 disappears, and at this time, because the air pressure of the space formed by surrounding the bottom surface of the fixed groove 9 and the moving block 18 is greater than the external air pressure, the moving block 18 can move in the opening direction of the fixed groove 9 under the action of the air pressure, the second magnetic block 19 moves towards the first magnetic block 17 along with the moving block 18, and the first magnetic block 17 moves towards the opening direction of the fixed groove 9 under the action of the repulsive force so as to drive the limit ball 10 to be inserted into the damping groove 11. At this time, the limit ball 10 is acted by the first magnetic block 17 to generate a certain magnetism so as to be absorbed in the damping groove 11, and the limit ball 10 is not easily separated from the damping groove 11 under the condition of not being driven by external force.
In the process of rotating the rotating block 303, the limit ball 10 is affected by the rotating friction force of the rotating block 303 to rotate, in order to facilitate the rotation of the limit ball 10, the rolling groove 20 attached to the limit ball 10 is formed in the end face of the first magnetic block 17, which is attracted with the limit ball 10, and the side wall of the rolling groove 20 is arc-shaped, so that the limit ball 10 can rotate more conveniently.
In order to improve the air tightness of the space formed by the bottom surface of the fixed groove 9 and the movable block 18, a sealing groove 21 is axially formed in the side wall of the movable block 18 attached to the side wall of the fixed groove 9, and a sealing ring 22 is arranged in the sealing groove 21 in an interference manner, so that the air in the space formed by the bottom surface of the fixed groove 9 and the movable block 18 is not easy to circulate, the air pressure in the space can be increased when the movable block 18 moves towards the bottom surface direction of the fixed groove 9, and the reset movement of the follow-up limiting ball 10 is facilitated.
In order to facilitate the movement of the moving block 18 towards the opening direction of the fixed slot 9, an elastic member 23 is welded on the bottom surface of the fixed slot 9, the whole elastic member 23 is approximately triangular cone-shaped, and one end of the elastic member 23 towards the bottom surface direction of the fixed slot 9 is recessed towards the opening direction of the fixed slot 9, so that the elastic member 23 can form a gas-tight air cavity 24 with the bottom surface of the fixed slot 9 in a surrounding manner. The elastic member 23 includes a hard portion 2302 and a soft portion 2301, the hard portion 2302 is an end of the elastic member 23, which is integrally close to the bottom surface of the fixed slot 9, the hard portion 2302 is welded to the bottom surface of the fixed slot 9, the hard portion 2302 is made of a rigid material, the soft portion 2301 is a triangular cone-shaped end of the elastic member 23, which is made of an elastic rubber material, and is hot-melt connected to the hard portion 2302, and an end of the soft portion 2301, which is far from the hard portion 2302, is abutted to the moving block 18. When the movable block 18 moves toward the bottom surface of the fixed slot 9, the flexible portion 2301 is pressed to move toward the bottom surface of the fixed slot 9, the air pressure in the air chamber 24 is increased, and when the movable block 18 has a tendency to move outward, the flexible portion 2301 can be quickly reset to the original state under the action of the air chamber 24, and the movable block 18 can move toward the opening direction of the fixed slot 9 under the action of the flexible portion 2301.
The embodiment of the application provides an implementation principle of an underground passage cover-excavation fence structure, which comprises the following steps: when the staff needs to enclose and splice plate 1, with the first connecting piece 2 on plate 1 with the second connecting piece 3 on another plate 1 one by one align, make again that turning block 303 rotates to turning sign 25 corresponds the direction in order to realize that dwang 301 is pegged graft in rotation hole 4, realize the fixed of first connecting piece 2 and second connecting piece 3, adjacent plate 1 can mutually adjust contained angle in order to adapt to the construction operating mode simultaneously.
The embodiment of the application also discloses a construction process of the underground passage cover-excavation method, which at least comprises the following steps:
s1, closing a first-stage construction area;
s2, connecting the plate pieces 1 to form a fence structure, and performing foundation reinforcement and upright post construction;
s3, excavating a foundation pit to a depth below the cover plate girder, and taking the construction-type girder as the cover plate girder;
s4, paving a steel pavement cover plate to form a temporary pavement and enabling the pavement to pass through traffic;
s5, continuously excavating underground below the first support, and constructing the first support;
s6, sequentially excavating downwards and erecting supports until the bottom of the foundation pit;
s7, constructing an internal structure of the underground passage;
s8, removing the temporary pavement, backfilling the soil, and building the permanent road.
The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.
Claims (8)
1. An underground passage cover digs method rail structure, its characterized in that: comprises a plurality of plate members (1), a first connecting piece (2) and a second connecting piece (3), wherein the first connecting piece (2) is arranged on one side of the plate member (1), the second connecting piece (3) is arranged on the other side of the plate member (1) and can be hinged with the first connecting piece (2) of the other plate member (1), a rotating hole (4) is formed in the first connecting piece (2), the second connecting piece (3) comprises a hinge plate (302) and a rotating rod (301), the rotating rod (301) is arranged on the hinge plate (302) and is provided with a locking state and an unlocking state on the hinge plate (302), when the rotating rod (301) is in the locking state, the rotating rod (301) is inserted into the rotating hole (4) so that the first connecting piece (2) is fixedly connected with the second connecting piece (3), when the rotating rod (301) is in the unlocking state, the rotating rod (301) is not inserted into the rotating hole (4) so that the first connecting piece (2) can be separated from the second connecting piece (3) in the hinge plate (2) in the direction, the rotating rod (3) is also arranged on the hinge plate (2), the utility model discloses a damping device for a bicycle, which comprises a hinge plate (302), a rotating block (303), a damping ball (10) and a damping ball, wherein one end of the rotating block (303) is coaxially provided with a first bevel gear (5), the first bevel gear (5) is simultaneously meshed with two second bevel gears (6), the second bevel gears (6) are axially fixed in the hinge plate (302), threaded holes (7) with opposite threads are formed in the two second bevel gears (6), the rotating rod (301) is in threaded connection with the threaded holes (7), the rotating block (303) comprises a rotating part (3031) and a connecting part (3032), the hinge plate (302) is provided with a connecting hole (8), the connecting part (3032) is inserted into the connecting hole (8), one end of the connecting part (3032) far away from the rotating part (3031) is coaxially connected with the first bevel gear (5), the connecting hole (8) is provided with a fixed groove (9) towards the opening edge of one end of the rotating part (3031), the fixed groove (9) is in a sliding way, the rotating part (3031) is provided with a limiting ball (10), the rotating part (3031) is provided with a connecting ball (10) along the circumference, and the first ball (10) can be in a first state and the limiting state and the second ball (10) is in a state when the first state is in a spacing state, one end of the limiting ball (10) far away from the fixed groove (9) extends out of the opening of the fixed groove (9) and is inserted into the damping groove (11), and when the limiting ball (10) is in the second state, the limiting ball (10) is contracted into the damping groove (11).
2. The underground passage cover excavation fence structure of claim 1, wherein: be provided with support (12) on perpendicular to axial cross section in fixed slot (9), be provided with on support (12) and place box (13), place box (13) and support (12) enclose and close and form and place chamber (14), spacing ball (10) are spacing in placing chamber (14), offer on support (12) and supply spacing ball (10) to expose and expose hole (15) with damping groove (11) butt.
3. The underground passage cover excavation fence structure according to claim 2, characterized in that: the utility model discloses a magnetic storage device, including box (13), fixed slot (9) and fixed block (18), connecting hole (16) have been seted up towards the one end of fixed slot (9) bottom surface on placing box (13), place box (13) and be connected with first magnetic path (17) along connecting hole (8) axial slip, first magnetic path (17) inhale with spacing ball (10) mutually, be provided with in fixed slot (9) along fixed slot (9) axial gliding movable block (18), movable block (18) cover fixed slot (9) cross section, the one end towards first magnetic path (17) on movable block (18) is provided with second magnetic path (19) that repel with first magnetic path (17).
4. The underground passage cover excavation fence structure of claim 3, wherein: the first magnetic block (17) is provided with a rolling groove (20) attached to the limit ball (10).
5. The underground passage cover excavation fence structure of claim 3, wherein: the side wall that movable block (18) and fixed slot (9) laminating has offered seal groove (21) along movable block (18) circumference, interference fit has sealing washer (22) in seal groove (21).
6. The underground passage cover excavation fence structure of claim 3, wherein: the bottom of the fixed groove (9) is provided with an elastic piece (23), and the elastic piece (23) is abutted to one end, far away from the second magnetic block (19), of the moving block (18).
7. The underground passage cover excavation fence structure of claim 6, wherein: the elastic piece (23) comprises a soft portion (2301) and a hard portion (2302), one end of the hard portion (2302) is fixed on the bottom surface of the fixed groove (9), the soft portion (2301) is fixed on one end of the hard portion (2302) away from the bottom surface of the fixed groove (9), one end of the soft portion (2301) away from the hard portion (2302) is abutted to the moving block (18), and the elastic piece (23) and the bottom surface of the fixed groove (9) are enclosed to form an air cavity (24).
8. A basement cover-excavation construction process using the basement cover-excavation fence structure as claimed in any one of claims 1 to 7, characterized by comprising at least the steps of:
s1, closing a first-stage construction area;
s2, connecting the plate (1) to form a fence structure, and performing foundation reinforcement and upright post construction;
s3, excavating a foundation pit to a depth below the cover plate girder, and taking the construction-type girder as the cover plate girder;
s4, paving a steel pavement cover plate to form a temporary pavement and enabling the pavement to pass through traffic;
s5, continuously excavating underground below the first support, and constructing the first support;
s6, sequentially excavating downwards and erecting supports until the bottom of the foundation pit;
s7, constructing an internal structure of the underground passage;
s8, removing the temporary pavement, backfilling the soil, and building the permanent road.
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| CN202210564023.XA CN114837492B (en) | 2022-05-23 | 2022-05-23 | Underground passage cover-excavation-method fence structure and construction process |
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| CN202210564023.XA CN114837492B (en) | 2022-05-23 | 2022-05-23 | Underground passage cover-excavation-method fence structure and construction process |
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| CN114837492A CN114837492A (en) | 2022-08-02 |
| CN114837492B true CN114837492B (en) | 2023-12-08 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208456274U (en) * | 2018-07-18 | 2019-02-01 | 管子祺 | A kind of subway foundation pit fence convenient for disassembly and assembly |
| CN211422233U (en) * | 2019-10-21 | 2020-09-04 | 徐康康 | Quick-release hinge |
| CN216277321U (en) * | 2021-10-19 | 2022-04-12 | 广东欧拉五金科技有限公司 | Split type hinge capable of being quickly disassembled and assembled |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208456274U (en) * | 2018-07-18 | 2019-02-01 | 管子祺 | A kind of subway foundation pit fence convenient for disassembly and assembly |
| CN211422233U (en) * | 2019-10-21 | 2020-09-04 | 徐康康 | Quick-release hinge |
| CN216277321U (en) * | 2021-10-19 | 2022-04-12 | 广东欧拉五金科技有限公司 | Split type hinge capable of being quickly disassembled and assembled |
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| CN114837492A (en) | 2022-08-02 |
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