CN116770867B - Foundation pit backfilling device and method - Google Patents
Foundation pit backfilling device and method Download PDFInfo
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- CN116770867B CN116770867B CN202311076773.3A CN202311076773A CN116770867B CN 116770867 B CN116770867 B CN 116770867B CN 202311076773 A CN202311076773 A CN 202311076773A CN 116770867 B CN116770867 B CN 116770867B
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000005096 rolling process Methods 0.000 claims abstract description 32
- 238000007599 discharging Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 5
- 239000002689 soil Substances 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 230000001012 protector Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 102000001999 Transcription Factor Pit-1 Human genes 0.000 description 26
- 108010040742 Transcription Factor Pit-1 Proteins 0.000 description 26
- 238000012856 packing Methods 0.000 description 12
- 239000000945 filler Substances 0.000 description 9
- 230000006378 damage Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
-
- 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
- E02D17/18—Making embankments, e.g. dikes, dams
-
- 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
- E02D17/02—Foundation pits
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Sewage (AREA)
Abstract
The application belongs to the technical field of filling, and discloses a foundation pit backfilling device and a foundation pit backfilling method, wherein the foundation pit backfilling device comprises a movable frame and a bearing plate which is used for being fixed at the top of at least one side of a foundation pit, wherein the bearing plate is provided with a guide rail and a groove rail along the length direction of the bearing plate, the guide rail and the groove rail are mutually parallel, the bottom of the movable frame is provided with a rolling element and a limit sliding block, the rolling element is in rolling fit with the groove rail, the limit sliding block is in sliding fit in the guide rail, the movable frame and the guide rail form a limit relation in the transverse direction, and the rolling element is connected with a driving part so that the movable frame can move along the groove rail through the rolling element. The stuffing box with the stuffing can move up and down so as to facilitate layered backfilling, and simultaneously can drive the rolling element by the driving part, so that the stuffing can move and distribute materials along at least one side or the circumferential direction of the foundation pit, the stuffing can be more uniform and controllable, and the stability is improved.
Description
Technical Field
The application belongs to the technical field of filling, and particularly relates to a foundation pit backfilling device and method.
Background
Building with basement often need dig and establish the foundation ditch, after the basement construction is accomplished, adopts clay layering to backfill the space between foundation ditch lateral wall and the basement outer wall, but because this space width often only has 1-1.5m, receives the restriction of construction site, large-scale mechanical equipment can't use, can only use simple vibration instrument to carry out backfill soil compaction through the manpower, and along with the foundation ditch degree of depth deepening, construction operation difficulty leads to later stage backfill material compactness inadequately, often later stage can appear backfilling the obvious quality problems of waiting of subsideing after the backfill.
In the prior art, the filler box containing the filler with higher compactness is hung by a rope in the backfilling of the foundation pit, and the filler is realized by moving up and down of the filler box, but the filler mode is fixed-point filler, is inconvenient when the position needs to be moved, is unfavorable for the uniform backfilling of the whole foundation pit, and the filler box is in a hanging connection mode, so that the stability is poor during lifting or discharging.
Disclosure of Invention
In view of the above, the application aims to provide a device and a method for backfilling a foundation pit, which solve the problems that the existing backfilling mode can not uniformly backfill the foundation pit and the stability of a stuffing box is poor.
In order to achieve the above purpose, the present application adopts the following technical scheme:
on the one hand, the foundation pit backfilling device comprises a movable frame and a bearing plate, wherein the bearing plate is used for being fixed at the top of at least one side of a foundation pit, a guide rail and a groove rail are arranged on the bearing plate along the length direction of the bearing plate, the guide rail and the groove rail are parallel to each other, a rolling element and a limit sliding block are arranged at the bottom of the movable frame, the rolling element is in rolling fit with the groove rail, the limit sliding block is in sliding fit in the guide rail, and the movable frame and the guide rail form a limit relation in the transverse direction, and the rolling element is connected with a driving part so that the movable frame can move along the groove rail through the rolling element;
the movable frame is provided with a connecting part extending towards the inner side of the foundation pit, two ends of the connecting part are symmetrically and slidingly connected with two guide rods, the top ends of the two guide rods are connected into a whole through a cross rod, and the bottom ends of the guide rods are provided with connecting seats; a stuffing box is connected between the two guide rods in a sliding manner, two sides of the stuffing box are respectively connected with a hydraulic cylinder group, each hydraulic cylinder group comprises an upper driving hydraulic cylinder and a lower driving hydraulic cylinder, the driving end of the upper driving hydraulic cylinder is connected with the connecting part, and the driving end of the lower driving hydraulic cylinder is connected with the connecting seat corresponding to the lower part;
the stuffing box is provided with a feed inlet and a discharge outlet which can be opened and closed.
In a possible implementation manner, a backfill area is formed between the foundation pit and a building in the foundation pit;
the bearing plates are provided with at least two and distributed along the top of the periphery of the foundation pit, and the guide rail and the groove rail on each bearing plate form a closed movable filling path; the stuffing box is positioned in the backfill area and is used for stuffing the backfill area;
the bearing plate is provided with an L-shaped corner protector for protecting the top edge of the corresponding side of the foundation pit.
In a possible implementation manner, the feeding hole is positioned at the top of the stuffing box, the discharging hole is positioned at the bottom of the stuffing box, and the discharging hole is provided with an opening and closing component;
the opening and closing assembly comprises two symmetrical baffle plates, the discharge hole is provided with a neck part which is formed by downward extension, two sides of the neck part are symmetrically provided with transverse sliding connectors, the baffle plates are in sliding fit in the sliding connectors, and two ends of the baffle plates are connected with the bottom of the stuffing box through hydraulic rods.
In a possible implementation, the cross bar is detachably connected with the guide bar;
the guide rod comprises at least two sections of rod parts, in two adjacent rod parts, one end of one rod part is provided with a threaded connector, the corresponding end of the other rod part is provided with a threaded connecting groove, and the threaded connecting grooves are in threaded fit with the threaded connectors so that the two adjacent connected rod parts can be detached.
In a possible implementation manner, the feeding device further comprises a mixing discharging device and a corrugated feeding pipe, one end of the corrugated feeding pipe is connected with a discharging hole of the mixing discharging device, and the other end of the corrugated feeding pipe is connected with a feeding hole of the stuffing box.
In a possible implementation manner, the connecting part comprises a rotary connecting seat, the rotary connecting seat is hinged with the movable frame through a hinge shaft, and the hinge shaft is parallel to the side edge of the foundation pit so that the stuffing box can be close to or far away from the side wall of the foundation pit;
the back of the stuffing box is provided with at least one group of elastic supporting components, and the elastic contact component is provided with a resistance reduction contact part which is used for rolling fit with the side wall of the foundation pit;
the top of the movable frame is hinged with one end of a connecting rod, and the other end of the connecting rod is hinged with a sliding sleeve sleeved on the outer side of the guide rod in a sliding way.
In a possible implementation manner, the elastic support assembly comprises a connection base with a connection cavity and a support arm with one end slidably connected in the connection cavity, the other end of the support arm is fixedly connected with a ball seat, a part of the ball body extending out of the ball seat is movably matched in the ball seat, and a buffer spring is arranged between the inner wall of the connection cavity and the support arm and is coaxial with the support arm.
In a possible implementation manner, the driving end of the upper driving hydraulic cylinder is detachably connected with the connecting part through an electromagnetic lock, and the driving end of the lower driving hydraulic cylinder is fixedly connected with the connecting seat;
the connecting part is also connected with a longitudinally arranged jacking cylinder, and the driving end of the jacking cylinder is used for lifting the guide rod through the jacking cross rod; the length of the guide rod is greater than or equal to the sum of the telescopic lengths of the driving ends of the top support oil cylinder, the upper driving hydraulic cylinder and the lower driving hydraulic cylinder.
In a possible implementation, the stuffing box has an upper limit and a lower limit;
when the stuffing box is in the lower limit position, the driving end of the upper driving hydraulic cylinder is in a disconnecting state with the connecting part and is in a retraction state, the driving end of the lower driving hydraulic cylinder is in a retraction state, and the driving end of the jacking cylinder is also in a retraction state and supports the cross rod;
when the stuffing box is in the upper limit, the driving end of the upper driving hydraulic cylinder is locked with the connecting part through an electromagnetic lock and is in a retraction state, the driving end of the lower driving hydraulic cylinder is in a retraction state, and the driving end of the jacking cylinder is also in a retraction state and is not in contact with the cross rod.
On the other hand, there is also provided a foundation pit backfilling method, based on the foundation pit backfilling device according to any one of the above technical solutions, comprising the steps of:
s1: hardening or tamping the top of the periphery of the foundation pit;
s2: a bearing plate is fixedly arranged at the top of at least one side of the foundation pit, a foundation pit backfilling device is arranged on the bearing plate, and the stuffing box is positioned in a backfilling area formed between the side wall of the foundation pit and a building;
s3: when the upper limit is performed, the feeding device adds backfill raw materials formed by mixing raw soil, cement, coarse aggregate, a water reducing agent and fine aggregate into the stuffing box through the corrugated feeding pipe;
s4: the upper driving hydraulic cylinder and the lower driving hydraulic cylinder are controlled to extend to the limit length, the driving end of the jacking hydraulic cylinder is controlled to extend and support a cross rod connected with the guide rod, at the moment, the locking of the driving end of the upper driving hydraulic cylinder and the connecting part is released through an electromagnetic lock, then the jacking hydraulic cylinder is controlled to retract slowly, and the driving ends of the upper driving hydraulic cylinder and the lower driving hydraulic cylinder are controlled to retract until the stuffing box reaches the lower limit position;
s5: controlling backfill raw materials in the stuffing box to fall into a backfill area, enabling the stuffing box to move along the guide rail direction through a driving part to uniformly distribute, forming a stuffing layer when the thickness of the stuffing reaches 0.4-0.8m, and spraying water on the stuffing layer;
s6: after water spraying is completed, the hydraulic cylinder is driven to extend under control to enable the stuffing box to be away from the stuffing layers by 0.7-1.3m, and the step S5 is repeated to form a plurality of stuffing layers until the stuffing box rises to the upper limit;
s7: tamping is carried out.
Compared with the prior art, the application has the following beneficial effects:
according to the foundation pit backfilling device, the movable frame of the guide rod and the stuffing box capable of being driven in a lifting manner through the upper driving hydraulic cylinder and the lower driving hydraulic cylinder are arranged, the stuffing box filled with the stuffing can move up and down so as to be convenient for layered backfilling, and meanwhile, the driving part can also drive the rolling part, so that the stuffing can move and distribute along at least one side or the circumferential direction of the foundation pit, the stuffing can be more uniform and controllable, the stability is improved, the whole gravity of the device can be applied to the top of the circumferential side of the foundation pit through the bearing plate, the pressure of the foundation pit in the unit area is reduced, the damage to the foundation pit can be greatly reduced, and the foundation pit is effectively protected.
Moreover, through arranging the loading board that has L shape angle bead along foundation ditch circumference, can be convenient for evenly distribute along circumference, realize that a backfill device alright carry out the foundation ditch backfill, also can effectively protect the damage of foundation ditch edge angle, avoided the problem to the foundation ditch destruction.
Meanwhile, the guide rod can be disassembled and assembled according to actual demands, so that the length can be prolonged or reduced, the deeper or shallower foundation pit can be backfilled conveniently, the guide rod and the stuffing box are arranged on the rotary connecting seat, the rotary connecting seat is hinged with the movable frame, and under the elastic support of the elastic support assembly, the stuffing box can be applicable to the uneven side wall of the foundation pit when moving along the circumferential direction of the foundation pit, so that the movement is smoother, and the practicability is further improved.
In addition, with last drive pneumatic cylinder and connecting portion pass through the electromagnetic lock and be connected, can make the packing box have down extremely spacing after relieving the connection, the guide bar removes promptly to the end, the position that the packing box removed to the end, such mode can make the packing box obtain bigger decline distance to can put forward the practicality to the dark foundation ditch, and can make the guide bar and the packing box on it can rise one section distance in order to go up the drive pneumatic cylinder and be connected with connecting portion through the shoring hydro-cylinder, and then can switch to extremely spacing or rise one height, more convenient, practical.
According to the foundation pit backfilling method, the foundation pit backfilling device is adopted, so that the foundation pit can be backfilled by one backfilling device, the cloth is more uniform, the multidirectional movement and layered cloth are realized, and the filler with higher compactness after filling can be matched and coordinated with the characteristics of the foundation, so that the quality problems such as later sedimentation and the like can be avoided.
Drawings
FIG. 1 is a schematic diagram of an installation principle of a foundation pit backfilling device according to an embodiment of the present application;
FIG. 2 is a schematic diagram illustrating a foundation pit backfill apparatus and a foundation pit top installation according to an embodiment of the present application;
FIG. 3 is an elevation view of a foundation pit backfill apparatus according to an embodiment of the present application;
FIG. 4 is a schematic diagram of a foundation pit backfill device according to an embodiment of the present application after installation and in an upper limit position;
FIG. 5 is a schematic diagram of a foundation pit backfill device according to an embodiment of the present application in a ready state when an upper driving hydraulic cylinder is about to be released and connected to a connecting portion to lower to a lower limit;
FIG. 6 is a schematic filling diagram of a foundation pit backfill device according to an embodiment of the present application when the foundation pit backfill device is at a lower limit;
FIG. 7 is a cross-sectional view of an elastomeric support assembly of a foundation pit backfill apparatus according to an embodiment of the present application;
fig. 8 is a schematic diagram of a connection structure of a guide rod of a foundation pit backfilling device according to an embodiment of the present application;
fig. 9 is a plan view illustrating an arrangement of a bearing plate of a foundation pit backfilling device according to an embodiment of the present application.
In the figure: 1-building; 2-foundation pit; 3-a foundation pit backfilling device; 31-a carrier plate; 32-a guide rail; 33-rolling elements; 34-grooved rails; 35-limiting sliding blocks; 36-moving a rack; 37-rotating the connecting seat; 38-a guide bar; 381-threaded connectors; 382-threaded connection groove; 383-a stem; 39-sliding sleeve; 310-connecting rod; 311-a feed inlet; 312-stuffing boxes; 313-a discharge port; 314-a cross bar; 315-lower driving hydraulic cylinder; 316-upper drive hydraulic cylinder; 317-connecting seats; 318-drive motor; 319-a hydraulic stem; 320-supporting an oil cylinder; 321-electromagnetic lock; 4-a corrugated charging tube; 5-an elastic support assembly; 51-connecting the base; 52-a buffer spring; 53-support arm; 54-ball seat; 55-sphere.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. The components of the embodiments of the present application generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
The application is further described with reference to the drawings and specific examples.
Referring to fig. 1-9, an embodiment of the present application provides a foundation pit backfilling device, which includes a moving frame 36 and a bearing plate 31 fixed on the top of at least one side of a foundation pit 2, wherein the bearing plate 31 is provided with a guide rail 32 and a slot rail 34 along the length direction thereof, the guide rail 32 and the slot rail 34 are parallel to each other, the bottom of the moving frame 36 is provided with a rolling member 33 and a limit slider 35, the rolling member 33 is in rolling fit with the slot rail 34, the limit slider 35 is in sliding fit in the guide rail 32 and enables the moving frame 36 and the guide rail 32 to form a limit relationship in the transverse direction, and the rolling member 33 is connected with a driving component so that the moving frame 36 can move along the slot rail 34 through the rolling member 33.
The bearing plate 31 is used for increasing the contact area with the top of the foundation pit 2, reducing the stress of the unit area of the foundation pit 2, and protecting the foundation pit 2, and can be fixed by fasteners such as anchors or screws, and the like, and the configuration can be selected according to the condition of the foundation pit 2. The guide rail 32 on the carrying plate 31 is mainly used for limiting in the transverse direction so as to avoid the problem of toppling when the stuffing box 312 moves, the stuffing box and the limiting sliding block 35 can form a limiting structure, and particularly can be an L-shaped limiting structure, the rolling piece 33 can enable the moving frame 36 to move along the arrangement direction of the tank through rolling fit with the tank, and the tank rail 34 is positioned on the inner side of the guide rail 32, so that the movement is more convenient. The rolling element 33 is connected with a driving component such as a driving motor 318, so that the rolling element 33 can be conveniently driven, and the whole movement of the movable frame 36 with the stuffing box 312 can be realized.
In the embodiment of the application, the movable frame 36 has a connecting portion extending toward the inner side of the foundation pit 2, two guide rods 38 are symmetrically and slidably connected to two ends of the connecting portion, the top ends of the two guide rods 38 are integrally connected by a cross rod 314, and a connecting seat 317 is provided at the bottom end of the guide rod 38; a stuffing box 312 is slidably connected between the two guide rods 38, two sides of the stuffing box 312 are respectively connected with a hydraulic cylinder group, each hydraulic cylinder group comprises an upper driving hydraulic cylinder 316 and a lower driving hydraulic cylinder 315, the driving end of the upper driving hydraulic cylinder 316 is connected with the connecting portion, and the driving end of the lower driving hydraulic cylinder 315 is connected with the connecting seat 317 corresponding to the lower portion.
The connection portion of the movable frame 36 is used for installing the guide rod 38 and connecting with the upper driving hydraulic cylinder 316, and may be oriented transversely, or may extend to the inner side of the foundation pit 2 and extend downward, such as an L-shaped structure, and in one implementation of the connection portion, the connection portion may be of an upper and lower double-plate structure, so that the guide rod 38 may have better stability in the axial direction. The guide rod 38 allows the stuffing box 312 to be slidably mounted thereon, which is more stable and reliable in lifting and lowering movements by the upper driving cylinder 316 and the lower driving cylinder 315. The two guide bars 38 are integrally connected by a top cross bar 314 to facilitate the two simultaneous movements. Stuffing boxes 312 are used to hold stuffing to facilitate distribution within foundation pit 2. The upper driving hydraulic cylinder 316 and the lower driving hydraulic cylinder 315 are arranged on two sides of the stuffing box 312, and the upper driving hydraulic cylinder 316 and the lower driving hydraulic cylinder 315 can enable the stuffing box 312 to obtain a larger lifting distance in the longitudinal direction, and can flexibly lift and fall in the distance range, so that the lifting distance is more controllable.
Of course, the stuffing box has a feed inlet 311 and an openable and closable discharge outlet 313.
Through the technical scheme, the movable frame 36 of the guide rod 38 and the packing box 312 which can be driven up and down through the upper driving hydraulic cylinder 316 and the lower driving hydraulic cylinder 315 are arranged, the packing box 312 filled with the packing can move up and down so as to be convenient for backfilling in a layered manner, the rolling element 33 can be driven by the driving component, and then the packing can be distributed to at least one side or the circumferential direction along the foundation pit 2, so that the packing can be more uniform and controllable, the stability is improved, the gravity of the whole device can be applied to the top of the circumferential side of the foundation pit 2 through the bearing plate 31, the pressure of the foundation pit 2 in the unit area is reduced, the damage to the foundation pit 2 can be greatly reduced, and the foundation pit 2 is effectively protected.
In one embodiment, a backfill area is formed between the foundation pit 2 and the building 1 in the foundation pit 2; the bearing plates 31 are provided with at least two and distributed along the top of the circumference side of the foundation pit 2, and the guide rail 32 and the groove rail 34 on each bearing plate 31 form a closed movable filling path; the stuffing box 312 is positioned in the backfill area and is used for stuffing the backfill area; the carrier plate 31 has an L-shaped corner protector for protecting the corresponding side top edge of the foundation pit 2.
Through arranging the loading board 31 that has L shape angle bead along foundation ditch 2 circumference, can enough be convenient for evenly distribute along circumference, realize that a backfilling device alright carry out foundation ditch 2 backfill, also can effectively protect the damage of foundation ditch 2 edge angle, avoided the problem to foundation ditch 2 destruction. When a plurality of bearing plates 31 are arranged, the adjacent bearing plates 31 are mutually connected, and the two bearing plates 31 can be kept flush at the same height through a plurality of fixing pieces.
Further, in order to enable the outlet 313 of the stuffing box 312 to be opened and closed better, the inlet 311 is located at the top of the stuffing box 312, the outlet 313 is located at the bottom of the stuffing box 312, and the outlet 313 is provided with an opening and closing component; the opening and closing assembly comprises two symmetrical baffle plates, the discharging hole 313 is provided with a neck part which is formed by downward extension, two sides of the neck part are symmetrically provided with transverse sliding connectors, the baffle plates are in sliding fit in the sliding connectors, and two ends of the baffle plates are connected with the bottom of the stuffing box 312 through hydraulic rods 319. Thus, the two striker plates can be moved to the middle or to the two sides by the linear driving of the hydraulic rod 319, and then can be opened or closed more conveniently.
To facilitate transportation of the guide bar 38 and to configure the length according to actual needs, further, the cross bar 314 is detachably connected to the guide bar 38; the guide rod 38 includes at least two sections of rod portions 383, and in two adjacent rod portions 383, one end of one rod portion 383 is provided with a threaded connector 381, the corresponding end of the other rod portion 383 is provided with a threaded connection groove 382, and the threaded connector 381 of the threaded connection groove 382 is in threaded engagement, so that the two adjacent connected rod portions 383 can be detached.
In other embodiments, the feeding device further comprises a mixing discharging device and a corrugated feeding pipe 4, wherein one end of the corrugated feeding pipe 4 is connected with a discharging hole 313 of the mixing discharging device, and the other end of the corrugated feeding pipe is connected with a feeding hole 311 of the stuffing box 312.
The mixing and discharging device is used for mixing various raw materials, and after mixing, the raw materials are fed into the stuffing box 312 through the corrugated feeding pipe 4, so that the stuffing in the stuffing box 312 can be fully or intermittently fed. Of course, the mixing and discharging device is preferably movable, and the movement mode can be that the mixing and discharging device is moved by a moving vehicle, or can be that the mixing and discharging device is used for feeding materials according to multiple points and fixed points, and is not limited.
In the embodiment of the application, the connecting part comprises a rotary connecting seat 37, the rotary connecting seat 37 is hinged with the movable frame through a hinge shaft, and the hinge shaft is parallel to the side edge of the foundation pit 2 so that the stuffing box 312 can be close to or far from the side wall of the foundation pit 2; at least one group of elastic supporting components 5 are arranged on the back of the stuffing box 312, and the elastic contact components are provided with anti-drag contact parts which are used for rolling fit with the side walls of the foundation pit 2; the top of the movable frame is hinged with one end of a connecting rod 310, and the other end of the connecting rod 310 is hinged with a sliding sleeve 39 sleeved on the outer side of the guide rod 38 in a sliding way.
Through installing guide bar 38, packing box 312 on rotating connecting seat 37, and rotating connecting seat 37 is articulated with remove frame 36 to under the elastic support of elastic support subassembly 5, can make packing box 312 also can be suitable for the rugged foundation ditch 2 lateral wall when removing along foundation ditch 2 circumference, make the removal more smooth and easy, further improved the practicality. Meanwhile, in order to make the guide rod 38 more stable when swinging along with the rotation of the connecting seat 37 within a certain angle range, it can be realized by the sliding sleeve 39 and the connecting rod 310.
In a preferred embodiment of the elastic support assembly 5, the elastic support assembly 5 includes a connection base 51 having a connection cavity and a support arm 53 having one end slidably connected in the connection cavity, the other end of the support arm 53 is fixedly connected with a ball seat 54, a ball 55 partially extending out of the ball seat 54 is movably fitted in the ball seat 54, and a buffer spring 52 is disposed between an inner wall of the connection cavity and the support arm 53, and the buffer spring 52 is coaxial with the support arm 53.
Through swing joint there is ball seat 54 of spheroid 55, accessible spheroid 55 and foundation ditch 2 lateral wall rolling contact, and then can adapt to the lateral wall of different unsmooth degree to through telescopic structure again cooperation buffer spring 52, the lateral part of realization buffering that can be better and this kind of condition, improved the stability, the security of packing box 312 greatly.
In order to enable the stuffing box 312 to have a larger lifting range in the longitudinal direction, in the embodiment of the present application, the driving end of the upper driving hydraulic cylinder 316 is detachably connected to the connection part through an electromagnetic lock 321, and the driving end of the lower driving hydraulic cylinder 315 is fixedly connected to the connection seat 317; the connecting part is also connected with a longitudinally arranged jacking cylinder 320, and the driving end of the jacking cylinder 320 is used for lifting the guide rod 38 through the jacking cross rod 314; the length of the guide rod 38 is greater than or equal to the sum of the telescopic lengths of the driving ends of the top support cylinder 320, the upper driving hydraulic cylinder 316, and the lower driving hydraulic cylinder 315.
The electromagnetic lock 321 is fixed on the rotating connection seat 37, and is provided with a lock tongue, the rotating connection seat 37 is provided with a through hole for allowing the driving end of the upper driving hydraulic cylinder 316 or the connecting block on the driving end to pass through, after the electromagnetic lock passes through, the lock hole on the driving end or the connecting block can be penetrated by the lock tongue of the electromagnetic lock 321, and then the electromagnetic lock 321 can be locked to be connected and locked with the rotating connection seat 37, so that the upper driving hydraulic cylinder 316 can perform a telescopic action. Moreover, the upper driving hydraulic cylinder 316 is connected with the connecting part through the electromagnetic lock 321, so that the stuffing box 312 can be provided with a lower limit after the connection is released, namely, the guide rod 38 moves to the bottom, the stuffing box 312 can obtain a larger descending distance in such a way that the deeper foundation pit 2 can be put into practical use, and the guide rod 38 and the stuffing box 312 on the guide rod 38 can be lifted by a certain distance through the jacking cylinder 320 so that the upper driving hydraulic cylinder 316 is connected with the connecting part, and the upper limit can be switched to be higher or lifted by a certain height, so that the upper driving hydraulic cylinder is more convenient and practical. In this way, the stuffing box 312 can obtain a lifting distance that is greater than or equal to the sum of the telescopic lengths of the driving ends of the top support cylinder 320, the upper driving cylinder 316, and the lower driving cylinder 315.
Specifically, the stuffing box 312 has an upper limit and a lower limit; when the stuffing box 312 is at the lower limit, the driving end of the upper driving hydraulic cylinder 316 is disconnected from the connecting portion and is in a retracted state, the driving end of the lower driving hydraulic cylinder 315 is in a retracted state, and the driving end of the top support cylinder 320 is also in a retracted state and supports the cross bar 314; when the stuffing box 312 is at the upper limit, the driving end of the upper driving hydraulic cylinder 316 and the connecting portion are locked by the electromagnetic lock 321 and the driving end is in a retracted state, the driving end of the lower driving hydraulic cylinder 315 is in a retracted state, and the driving end of the top supporting cylinder 320 is also in a retracted state and is not in contact with the cross rod 314.
Of course, the upper driving hydraulic cylinder 316, the lower driving hydraulic cylinder 315, the hydraulic rod 319, the top support cylinder 320 and other components are all connected with a controller, and the controller is controlled by the controller, and the controller can be a controller stored with a corresponding execution program, can also be a PLC (programmable logic controller) for performing conventional programming, and can also be additionally provided with a remote control function, so that the control is more convenient and is not limited.
The embodiment of the application also provides a foundation pit 2 backfilling method, and a foundation pit backfilling device 3 based on any one of the above technical schemes comprises the following steps:
s1: hardening or tamping the top of the periphery side of the foundation pit 2;
s2: a bearing plate 31 is fixedly arranged on the top of at least one side of the foundation pit 2, a foundation pit backfilling device 3 is arranged on the bearing plate 31, and a stuffing box 312 is positioned in a backfilling area formed between the side wall of the foundation pit 2 and the building 1;
s3: at the upper limit, the feeding device adds backfill raw materials which are formed by mixing raw soil, cement, coarse aggregate, water reducing agent and fine aggregate into the stuffing box 312 through the corrugated feeding pipe 4;
s4: the upper driving hydraulic cylinder 316 and the lower driving hydraulic cylinder 315 are controlled to extend to the limit length, the driving end of the jacking hydraulic cylinder 320 is controlled to extend and support the cross rod 314 connected with the guide rod 38, at the moment, the locking of the driving end of the upper driving hydraulic cylinder 316 and the connecting part is released through the electromagnetic lock 321, then the jacking hydraulic cylinder 320 is controlled to retract slowly, and the driving ends of the upper driving hydraulic cylinder 316 and the lower driving hydraulic cylinder 315 are controlled to retract until the stuffing box 312 reaches the lower limit position;
s5: the backfill raw materials in the stuffing box 312 are controlled to fall into the backfill region, the stuffing box is moved along the direction of the guide rail 32 by a driving component to uniformly distribute, a stuffing layer is formed when the thickness of the stuffing reaches 0.4-0.8m, and water is sprayed on the stuffing layer;
s6: after the water spraying is completed, the hydraulic cylinder 315 is driven under control to extend to enable the stuffing box 312 to be 0.7-1.3m away from the stuffing layers, and the step S5 is repeated to form a plurality of stuffing layers until the stuffing box 312 rises to an upper limit;
s7: tamping is carried out.
By adopting the foundation pit backfilling device 3, the backfilling device can backfill the foundation pit 2, the cloth is more uniform, the multidirectional movement and layered cloth are realized, and the filler with higher compactness after filling can be made to be matched and coordinated with the characteristics of the foundation, so that the quality problems of later sedimentation and the like can be avoided.
Finally, it should be noted that: the foregoing description is only of the preferred embodiments of the application and is not intended to limit the scope of the application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (7)
1. The utility model provides a foundation ditch backfill device which characterized in that: comprises a movable frame (36) and a bearing plate (31) which is used for being fixed at the top of at least one side of a foundation pit (2), wherein the bearing plate (31) is provided with a guide rail (32) and a groove rail (34) along the length direction, the guide rail (32) and the groove rail (34) are mutually parallel, the bottom of the movable frame (36) is provided with a rolling piece (33) and a limit sliding block (35), the rolling piece (33) is in rolling fit with the grooved rail (34), the limit sliding block (35) is in sliding fit in the guide rail (32) and enables the movable frame (36) and the guide rail (32) to form a limit relation in the transverse direction, and the rolling piece (33) is connected with a driving part so that the movable frame (36) can move along the grooved rail (34) through the rolling piece (33);
the movable frame (36) is provided with a connecting part extending towards the inner side of the foundation pit (2), two symmetrical sliding connection ends of the connecting part are provided with two guide rods (38), the top ends of the two guide rods (38) are connected into a whole through a cross rod (314), and the bottom end of the guide rod (38) is provided with a connecting seat (317); a stuffing box (312) is connected between the two guide rods (38) in a sliding manner, two sides of the stuffing box (312) are respectively connected with a hydraulic cylinder group, each hydraulic cylinder group comprises an upper driving hydraulic cylinder (316) and a lower driving hydraulic cylinder (315), the driving end of the upper driving hydraulic cylinder (316) is connected with the connecting part, and the driving end of the lower driving hydraulic cylinder (315) is connected with the corresponding connecting seat (317) below;
the stuffing box is provided with a feeding hole (311) and a discharging hole (313) which can be opened and closed;
the device also comprises a feeding device, a mixing discharging device and a corrugated feeding pipe (4), wherein one end of the corrugated feeding pipe (4) is connected with a discharging hole of the mixing discharging device, and the other end of the corrugated feeding pipe is connected with a feeding hole (311) of the stuffing box (312);
the driving end of the upper driving hydraulic cylinder (316) is detachably connected with the connecting part through an electromagnetic lock (321), and the driving end of the lower driving hydraulic cylinder (315) is fixedly connected with the connecting seat (317);
the connecting part is also connected with a longitudinally arranged jacking cylinder (320), and the driving end of the jacking cylinder (320) is used for lifting the guide rod (38) through the jacking cross rod (314); the length of the guide rod (38) is larger than or equal to the sum of the telescopic lengths of the driving ends of the top support oil cylinder (320), the upper driving hydraulic cylinder (316) and the lower driving hydraulic cylinder (315);
the stuffing box (312) has an upper limit and a lower limit;
when the stuffing box (312) is in a lower limit position, the driving end of the upper driving hydraulic cylinder (316) is in a disconnecting state with the connecting part and in a retraction state, the driving end of the lower driving hydraulic cylinder (315) is in a retraction state, and the driving end of the jacking cylinder (320) is also in a retraction state and supports the cross rod (314);
when the stuffing box (312) is in an upper limit position, the driving end of the upper driving hydraulic cylinder (316) is locked with the connecting part through an electromagnetic lock (321) and is in a retraction state, the driving end of the lower driving hydraulic cylinder (315) is in a retraction state, and the driving end of the jacking cylinder (320) is also in a retraction state and is not in contact with the cross rod (314).
2. The foundation pit backfill device of claim 1, wherein: a backfill area is formed between the foundation pit (2) and the building (1) in the foundation pit (2);
the bearing plates (31) are provided with at least two and distributed along the top of the periphery of the foundation pit (2), and a guide rail (32) and a groove rail (34) on each bearing plate (31) form a closed movable filling path; the stuffing box (312) is positioned in the backfill area and is used for stuffing the backfill area;
the bearing plate (31) is provided with an L-shaped corner protector for protecting the top edge of the corresponding side of the foundation pit (2).
3. The foundation pit backfill device of claim 1, wherein: the feeding hole (311) is positioned at the top of the stuffing box (312), the discharging hole (313) is positioned at the bottom of the stuffing box (312), and the discharging hole (313) is provided with an opening and closing component;
the opening and closing assembly comprises two symmetrical baffle plates, the discharging hole (313) is provided with a neck part which is formed by downward extension, two sides of the neck part are symmetrically provided with transverse sliding connectors, the baffle plates are in sliding fit in the sliding connectors, and two ends of the baffle plates are connected with the bottom of the stuffing box (312) through hydraulic rods (319).
4. The foundation pit backfill device of claim 1, wherein: the cross rod (314) is detachably connected with the guide rod (38);
the guide rod (38) comprises at least two sections of rod parts (383), in the two adjacent rod parts (383), one end of one rod part (383) is provided with a threaded connector (381), the corresponding end of the other rod part (383) is provided with a threaded connecting groove (382), and the threaded connecting groove (382) is in threaded fit with the threaded connector (381) so that the two adjacent connected rod parts (383) can be detached.
5. A pit backfilling device according to any one of claims 1-4, wherein: the connecting part comprises a rotary connecting seat (37), the rotary connecting seat (37) is hinged with the movable frame (36) through a hinge shaft, and the hinge shaft is parallel to the side edge of the foundation pit (2) so that the stuffing box (312) can be close to or far from the side wall of the foundation pit (2);
the back of the stuffing box (312) is provided with at least one group of elastic supporting components (5), and the elastic supporting components are provided with anti-drag contact parts which are used for rolling fit with the side walls of the foundation pit (2);
the top of the movable frame (36) is hinged with one end of a connecting rod (310), and the other end of the connecting rod (310) is hinged with a sliding sleeve (39) which is sleeved on the outer side of the guide rod (38) in a sliding way.
6. The foundation pit backfill device of claim 5, wherein: the elastic support assembly (5) comprises a connecting base (51) with a connecting cavity and a support arm (53) with one end slidably connected in the connecting cavity, a ball seat (54) is fixedly connected with the other end of the support arm (53), a ball body (55) with a part extending out of the ball seat (54) is movably matched in the ball seat (54), a buffer spring (52) is arranged between the inner wall of the connecting cavity and the support arm (53), and the buffer spring (52) is coaxial with the support arm (53).
7. A foundation pit backfilling method based on the foundation pit backfilling device according to any one of claims 1-6, characterized in that: the method comprises the following steps:
s1: hardening or tamping the top of the periphery of the foundation pit (2);
s2: fixing a bearing plate (31) on the top of at least one side of a foundation pit (2), mounting a foundation pit backfilling device (3) on the bearing plate (31), and enabling a stuffing box (312) to be positioned in a backfilling area formed between the side wall of the foundation pit (2) and a building (1);
s3: when the upper limit is performed, the feeding device adds backfill raw materials which are formed by mixing raw soil, cement, coarse aggregate, a water reducing agent and fine aggregate into the stuffing box (312) through the corrugated feeding pipe (4);
s4: the upper driving hydraulic cylinder (316) and the lower driving hydraulic cylinder (315) are controlled to extend to the limit length, the driving end of the jacking oil cylinder (320) is controlled to extend and support the cross rod (314) connected with the guide rod (38), at the moment, the locking of the driving end of the upper driving hydraulic cylinder (316) and the connecting part is released through the electromagnetic lock (321), then the jacking oil cylinder (320) is controlled to retract slowly, and the driving ends of the upper driving hydraulic cylinder (316) and the lower driving hydraulic cylinder (315) are controlled to retract until the stuffing box (312) reaches the lower limit position;
s5: controlling backfill raw materials in the stuffing box (312) to fall into a backfill area, enabling the stuffing box to move along the direction of the guide rail (32) through a driving part to uniformly distribute, forming a stuffing layer when the thickness of the stuffing reaches 0.4-0.8m, and spraying water on the stuffing layer;
s6: after water spraying is completed, the hydraulic cylinder (315) is driven under control to extend to enable the stuffing box (312) to be away from the stuffing layer by 0.7-1.3m, and the step S5 is repeated to form a plurality of stuffing layers until the stuffing box (312) rises to an upper limit;
s7: tamping is carried out.
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| CN202311076773.3A CN116770867B (en) | 2023-08-25 | 2023-08-25 | Foundation pit backfilling device and method |
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| CN116770867A (en) | 2023-09-19 |
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Application publication date: 20230919 Assignee: Beijing Zhongzhen Existing Construction Engineering Co.,Ltd. Assignor: Beijing University of Civil Engineering and Architecture Contract record no.: X2024980000255 Denomination of invention: A device and method for backfilling foundation pits Granted publication date: 20231027 License type: Common License Record date: 20240108 |
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