CN112554188A - Mixing and stirring device for foundation pit backfill materials and construction method - Google Patents

Mixing and stirring device for foundation pit backfill materials and construction method Download PDF

Info

Publication number
CN112554188A
CN112554188A CN202011416395.5A CN202011416395A CN112554188A CN 112554188 A CN112554188 A CN 112554188A CN 202011416395 A CN202011416395 A CN 202011416395A CN 112554188 A CN112554188 A CN 112554188A
Authority
CN
China
Prior art keywords
stirring
wedge
feeding
foundation pit
mixing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202011416395.5A
Other languages
Chinese (zh)
Inventor
骆发江
孟锦
田周
张泽坤
江少兵
时广辉
田勇
张波
李俊
马冲
李锋
胡金库
孙愿军
张楠
张亮
黎建宁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Construction Third Engineering Bureau Co Ltd
Original Assignee
China Construction Third Engineering Bureau Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Construction Third Engineering Bureau Co Ltd filed Critical China Construction Third Engineering Bureau Co Ltd
Priority to CN202011416395.5A priority Critical patent/CN112554188A/en
Publication of CN112554188A publication Critical patent/CN112554188A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D15/00—Handling building or like materials for hydraulic engineering or foundations
    • 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
    • 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

Abstract

The invention relates to a mixing and stirring device for foundation pit backfill materials and a construction method. The mixing and stirring device for the foundation pit backfill materials comprises a material stirring mechanism, a clamping component and a plurality of lifting and feeding mechanisms; a plurality of promotion feeding mechanism all through chucking part and stirring material mechanism joint. The device has a simple structure, can be operated at a low position when being used for construction, saves physical power, and can feed various materials to the mixing materials according to the proportion and automatically convey the materials into the foundation pit, thereby realizing the integration of feeding, mixing and conveying, shortening the construction flow, improving the construction efficiency and reducing the construction cost.

Description

Mixing and stirring device for foundation pit backfill materials and construction method
Technical Field
The invention belongs to the technical field of foundation pit construction equipment, and relates to a mixing and stirring device for foundation pit backfill materials and a construction method.
Background
In construction, the foundation pit comprises a plurality of types, such as large excavation, a fertilizer tank, a pipe gallery and the like, but after construction is finished, the foundation pit needs to be backfilled so as to reach the ground surface height during excavation, so that the conditions of collapse or cracks and the like of the foundation pit are avoided, and hidden dangers are brought to construction safety; however, because the foundation pit has a certain gradient and the upper surface is narrow, the foundation pit is difficult to be compacted by measures such as a road roller and the like, and the problem can be solved only by backfilling hard materials into the foundation pit.
The foundation pit backfilling is an important link in project construction, and usually, a plurality of backfilling modes exist in the construction. For example, soil is backfilled into a foundation pit, lime powder and the like are mixed for moisture prevention and the like, and then the soil is tamped once and again by a road roller after backfilling; concrete is also used for backfilling, and other mixed materials are also used for backfilling; however, the backfilling material is required during backfilling, so that collapse and cracks cannot occur after backfilling, the cost is low, and the like; meanwhile, during backfilling, the backfilling materials are mixed and then poured into the foundation pit; when the existing backfill materials are mixed, the materials are weighed, mixed and stirred manually, so that the labor cost is high and the construction efficiency is low; when mechanical mixing and stirring are adopted, the backfill materials are manually put into a stirring device for mixing; then the concrete is conveyed to the position of the foundation pit through equipment, the construction process is long, the stirring device has a certain height, manual feeding is adopted, physical power is wasted, and the construction cost is high.
Disclosure of Invention
Aiming at the technical problems of high labor cost, large physical consumption, long construction process and low efficiency in backfill materials in the background technology, the invention provides the mixing and stirring device for the foundation pit backfill materials and the construction method.
The technical solution of the invention is as follows: the invention relates to a mixing and stirring device for foundation pit backfill materials, which is characterized in that: the mixing and stirring device for the foundation pit backfill materials comprises a material stirring mechanism, a clamping component and a plurality of lifting and feeding mechanisms; a plurality of promotion feeding mechanism all pass through chucking part and stirring material mechanism joint, and with multiple material according to the ratio respectively from the bottom up promote to stirring material mechanism in stir the mixture.
Preferably, the lifting and feeding mechanism comprises a support frame and a spiral feeding pipe obliquely arranged on the support frame; a feeding port is arranged at the upper end of the spiral feeding pipe; a feeding hopper communicated with the interior of the spiral feeding pipe is arranged at the lower end of the spiral feeding pipe; the spiral feeding pipe is also provided with a feeding motor.
Preferably, the material stirring mechanism comprises a fixed frame body and a stirring bin arranged on the fixed frame body; blades are arranged in the stirring bin; and a feed opening is arranged at the bottom of the stirring bin.
Preferably, the clamping component comprises a wedge-shaped barrel and a wedge-shaped ring which are matched; the wedge-shaped barrel is sleeved on the spiral feeding pipe of the lifting feeding mechanism; the wedge-shaped ring is arranged on a stirring bin of the material stirring mechanism; the wedge barrel is inserted into the wedge ring and is clamped with the wedge ring.
Preferably, the material stirring mechanism further comprises a fixing plate; the fixing plate is arranged on the stirring bin, and the wedge-shaped ring is provided with a triangular plate; the set square is movably connected with the fixed plate through a rotating shaft.
Preferably, the wedge-shaped barrel comprises a hollow barrel body and side walls arranged on two sides of the hollow barrel body; the longitudinal section of the wedge-shaped barrel is isosceles trapezoid, and the hollow barrel is sleeved on the spiral feeding pipe; the outer part of the side wall is clamped in a wedge-shaped ring, and the shape of the wedge-shaped ring is a circular truncated cone; the size of the outer surface of the wedge-shaped barrel is matched with the size of the inner surface of the wedge-shaped ring; the direction of the small round platform of the wedge-shaped ring is consistent with the direction of the small round platform of the wedge-shaped barrel, the small round platform of the wedge-shaped ring faces upwards, and the wedge-shaped barrel is poked into the wedge-shaped ring from bottom to top and is tightly clamped with the wedge-shaped ring.
Preferably, the mixing and stirring device for the foundation pit backfill materials further comprises a material conveying mechanism arranged below the material stirring mechanism, the material conveying mechanism comprises a spiral conveying pipe and a conveying motor connected with one end of the spiral conveying pipe, a conveying port is formed in the side wall of the other end of the spiral conveying pipe, an opening is formed in the side wall of the spiral conveying pipe in the radial direction, and a conveying hopper communicated with the opening is arranged on the spiral conveying pipe close to the conveying motor; the conveying hopper is arranged right below the feed opening.
A construction method based on the mixing and stirring device for the foundation pit backfill materials is characterized in that: the construction method comprises the following steps:
1) clamping a plurality of lifting and feeding mechanisms on the material stirring mechanism respectively, and clamping a wedge-shaped barrel sleeved on a spiral feeding pipe in a wedge-shaped ring; the spiral feeding pipe is firmly clamped with the stirring bin, and the whole backfill mixed material stirring device is placed near a foundation pit to be backfilled;
2) according to the proportion required by construction, the material adding sequence and the stirring time requirement, a plurality of materials required by backfilling are respectively conveyed into a material stirring mechanism from bottom to top through a plurality of lifting and feeding mechanisms to be mixed and stirred, so that a backfilling mixed material is obtained;
3) and conveying the backfilling mixed material into the foundation pit to be backfilled through a material conveying mechanism, tamping and maintaining for 15-20 days after the foundation pit is filled up until the curing strength reaches 0.2-0.4MPa, and completing foundation pit backfilling.
Preferably, the specific steps of step 2) are as follows: determining the proportion of raw materials required by construction, the material adding sequence and the stirring time according to the soil quality, and adjusting the rotating speed of a feeding motor corresponding to each of multiple materials, so as to control the feeding amount and the feeding speed of a spiral feeding pipe in unit time, and finally enabling the multiple materials to fall into a stirring bin from bottom to top for mixing and stirring according to the proportion, the material adding sequence and the stirring time required by construction; meanwhile, in the feeding process, the wedge-shaped barrel is tightly clamped with the wedge-shaped ring under the continuous upward thrust.
Preferably, the rotating speed of a feeding motor of the lifting feeding mechanism in the step 2) is 30 r/min-60 r/min; stirring speed of stirring storehouse of stirring material mechanism 3m3/min—5m3And/min, wherein the slump measured value of the foundation pit backfill material stirred by the stirring bin is 180-220 mm.
The invention has the beneficial effects that:
1. the invention provides a mixing and stirring device for foundation pit backfill materials, which comprises a material stirring mechanism and a plurality of lifting and feeding mechanisms, wherein the lifting and feeding mechanisms are clamped with the material stirring mechanism; a plurality of promotion feeding mechanism all pass through chucking part and stirring material mechanism joint, and with multiple material according to the ratio respectively from the bottom up promote to stirring material mechanism in stir the mixture. Its simple structure, during the pay-off, constructor can put into the material at the low place and promote feeding mechanism in, with multiple material, accomplish the pay-off through promoting feeding mechanism and according to the ratio respectively, save physical power, reduce the cost of labor, material ratio satisfies the construction demand simultaneously.
2. According to the invention, the lifting feeding mechanism comprises a support frame and a spiral feeding pipe obliquely arranged on the support frame, and a feeding port is arranged at the upper end of the spiral feeding pipe; the lower end of the spiral feeding pipe is provided with a feeding hopper communicated with the inside of the spiral feeding pipe, and the material stirring mechanism comprises a fixed frame body and a stirring bin arranged on the fixed frame body; a feed opening is arranged at the bottom of the stirring bin; the feeding hopper is positioned below the side of the feed opening; the feeding port is positioned above the stirring bin; and a material conveying mechanism is arranged below the feed opening. The invention integrates feeding, mixing and conveying, shortens the construction process, improves the construction efficiency and reduces the construction cost.
3. In the invention, the clamping component comprises a wedge-shaped barrel and a wedge-shaped ring which are matched with each other; the wedge-shaped barrel is sleeved on the lifting feeding mechanism; the wedge-shaped ring is arranged on the material stirring mechanism; the wedge barrel is inserted into the wedge ring and is clamped with the wedge ring. A fixed plate is arranged on the material stirring mechanism; a triangular plate is arranged on the wedge-shaped ring; the set square is movably connected with the fixed plate. When the device is installed, the triangular plate is movably connected with the fixed plate, so that the wedge-shaped ring can rotate by an angle, and the spiral feeding pipe and the stirring bin can be conveniently installed in a matched manner; meanwhile, when feeding, the material is fed upwards, the wedge-shaped barrel is clamped into the wedge-shaped ring upwards, the wedge-shaped barrel is continuously clamped with the wedge-shaped ring under the action of upward thrust, and the spiral feeding pipe is tightly connected with the stirring bin.
4. In the invention, a plurality of lifting and feeding mechanisms are provided, and in each lifting and feeding mechanism, one end of a spiral feeding pipe is provided with a feeding motor connected with the spiral feeding pipe; during implementation, the rotating speed of each material conveying motor can be set, so that the falling amount of each material from the feeding port on the spiral feeding pipe in unit time is controlled, the feeding motors of the plurality of lifting feeding mechanisms are matched, the plurality of materials fall into the stirring bin in proportion to be mixed and stirred, the mixing ratio of the backfilled materials is controlled, and the requirements of construction on the backfilled mixed materials are met.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a schematic view of the overall structure of the lift-feed mechanism of the present invention;
FIG. 5 is a front view of FIG. 4;
FIG. 6 is a schematic view of the overall structure of the material stirring mechanism of the present invention;
FIG. 7 is a front view of FIG. 6;
FIG. 8 is a top view of FIG. 6;
FIG. 9 is a schematic view of the connection structure of the lifting and feeding mechanism and the material stirring mechanism of the present invention;
fig. 10 is a schematic view of the entire structure of the material conveying mechanism 3 of the present invention;
FIG. 11 is a front view of FIG. 10;
1. a lifting and feeding mechanism; 11. a hopper; 12. a helical feed tube; 13. a feed port; 14. a support frame; 15. a roller; 16. a wedge-shaped barrel; 17. a feeding motor; 2. a material stirring mechanism; 21. a fixed frame body; 22. a stirring bin; 23. a blade; 24. a wedge ring; 25. a set square; 26. a fixing plate; 27. a rotating shaft; 28. a feeding port; 3. a material conveying mechanism; 31. a material conveying motor; 32. a material conveying hopper; 33. a spiral delivery pipe; 34. and a material conveying port.
Detailed Description
The invention provides a mixing and stirring device for foundation pit backfill materials, which comprises a material stirring mechanism 2 and a plurality of lifting and feeding mechanisms 1, wherein the lifting and feeding mechanisms are respectively connected with the material stirring mechanism 2 in a clamping manner; a plurality of promotion feeding mechanism 1 all through chucking part and stirring material mechanism 2 joint, and with multiple material according to the ratio respectively from the bottom up promote to stirring material mechanism 2 in the stirring mix.
In the invention, the lifting feeding mechanism 1 comprises a support frame 14 and a spiral feeding pipe 12 obliquely arranged on the support frame 14; a feeding port 13 is arranged at the upper end of the spiral feeding pipe 12; a feeding hopper 11 communicated with the interior of the spiral feeding pipe 12 is arranged at the lower end of the spiral feeding pipe 12; the wedge-shaped barrel 16 is sleeved on the spiral feeding pipe 12; the bottom of the supporting frame 14 is provided with a roller 15; the spiral feeding pipe 12 is also provided with a feeding motor 17.
In the invention, the material stirring mechanism 2 comprises a fixed frame body 21 and a stirring bin 22 arranged on the fixed frame body 21; the fixing plate 26 is arranged on the stirring bin 22; blades 23 are arranged in the stirring bin 22; the bottom of the stirring bin 22 is provided with a feed opening 28.
In the present invention, the clamping member comprises a wedge barrel 16 and a wedge ring 24 which are matched; the wedge-shaped barrel 16 is sleeved on the spiral feeding pipe 12; the wedge-shaped ring 24 is arranged on the stirring bin 22; the wedge barrel 16 is inserted into the wedge ring 24 and is clamped with the wedge ring 24. A fixed plate 26 is arranged on the material stirring mechanism 2; a triangular plate 25 is arranged on the wedge-shaped ring 24; the triangle board 25 is movably connected with the fixed board 26 through a rotating shaft 27.
In the invention, the wedge-shaped barrel 16 comprises a hollow barrel body and side walls arranged at two sides of the hollow barrel body; the longitudinal section of the wedge-shaped barrel 16 is isosceles trapezoid, and the hollow barrel is sleeved on the lifting feeding mechanism 1; the outer portion of the sidewall snaps into the wedge ring 24. The wedge ring 24 is in a circular truncated cone shape; and the outer surface dimension of the wedge barrel 16 matches the inner surface dimension of the wedge ring 24; the direction of the small round platform of the wedge-shaped ring 24 is consistent with the direction of the small round platform of the wedge-shaped barrel 16, the small round platforms face upwards, and the wedge-shaped barrel 16 is inserted into the wedge-shaped ring 24 from bottom to top and is tightly clamped with the wedge-shaped ring 24.
The mixing and stirring device for the foundation pit backfill materials further comprises a material conveying mechanism 3 arranged below the feed opening 28, wherein the material conveying mechanism 3 comprises a spiral conveying pipe 33 and a conveying motor 31 connected with one end of the spiral conveying pipe 33, a conveying opening 34 is formed in the side wall of the other end of the spiral conveying pipe 33, an opening is formed in the side wall of the spiral conveying pipe 33 in the radial direction, and a conveying hopper 32 communicated with the opening is arranged on the spiral conveying pipe 33 and close to the conveying motor 31; the material conveying hopper 32 is disposed just below the feed opening 28.
The invention provides a construction method of a mixing and stirring device for foundation pit backfill materials, which comprises the following steps:
1) the plurality of lifting and feeding mechanisms 1 are respectively clamped on the material stirring mechanism 2, and the wedge-shaped barrel 16 sleeved on the spiral feeding pipe 12 is clamped in the wedge-shaped ring 24; therefore, the spiral feeding pipe 12 is firmly clamped with the stirring bin 22, and the whole backfill mixed material stirring device is placed near a foundation pit to be backfilled;
2) according to the proportion required by construction, the material adding sequence and the stirring time requirement, a plurality of materials required by backfilling are respectively conveyed into the material stirring mechanism 2 from bottom to top through a plurality of lifting and feeding mechanisms 1 to be mixed and stirred, so that a backfilling mixed material is obtained;
3) and conveying the backfilling mixed material into the foundation pit to be backfilled through the material conveying mechanism 3, tamping and maintaining for 15-20 days after the foundation pit is filled up until the curing strength reaches 0.2-0.4MPa, and completing foundation pit backfilling.
The specific steps of step 2) are as follows: determining the proportion of raw materials required by construction, the material adding sequence and the stirring time according to the soil quality, and adjusting the rotating speed of a feeding motor 17 corresponding to each of multiple materials, so as to control the feeding amount and the feeding speed of a spiral feeding pipe 12 in unit time, and finally enabling the multiple materials to fall into a stirring bin 22 from bottom to top for mixing and stirring according to the proportion, the material adding sequence and the stirring time required by construction; meanwhile, during the feeding process, the wedge-shaped barrel 16 is continuously pushed upwards to be clamped with the wedge-shaped ring 24. Wherein the rotating speed of the feeding motor 17 is 30 r/min-60 r/min; stirring speed of stirring bin 22 is 3m3/min—5m3And min, wherein the slump measured value of the foundation pit backfill materials stirred by the stirring bin 22 is 180-220 mm.
The technical solution of the present invention is further explained with reference to the accompanying drawings and specific embodiments.
Example 1
Referring to fig. 1, fig. 2 and fig. 3, the mixing and stirring device for foundation pit backfill materials provided by this embodiment includes a lifting and feeding mechanism 1, a material stirring mechanism 2 and a material conveying mechanism 3.
In this embodiment, the number of the lifting and feeding mechanisms 1 is five; are all clamped with the material stirring mechanism 2 through a clamping component; the material conveying mechanism 3 is arranged below the material stirring mechanism 2; a plurality of backfill materials are respectively lifted from the lower part through the lifting and feeding mechanism 1 and are conveyed into the material stirring mechanism 2 for stirring, and then are conveyed into the foundation pit through the material conveying mechanism 3.
Referring to fig. 4 and 5, the lifting and feeding mechanism 1 comprises a support frame 14 and a spiral feeding pipe 12 obliquely arranged on the support frame 14, wherein a feeding motor 17 connected with the spiral feeding pipe 12 is arranged at one end of the spiral feeding pipe 12; the other end of the spiral feeding pipe 12 is provided with a feeding port 13; the spiral feeding pipe 12 is also provided with a feeding hopper 11 communicated with the inside of the spiral feeding pipe 12; the bottom of the supporting frame 14 is provided with a roller 15; the wedge barrel 16 is sleeved outside the spiral feeding pipe 12.
Referring to fig. 4 and 5, the supporting frame 14 is a frame structure formed by two right-angled triangles with the same structure and size, wherein one right-angled side is parallel to the ground, and a supporting rod is arranged on the bottom of the right-angled side; the bottom of the support rod is provided with a roller 15; the rollers 15 are 4 and all contact the ground. The screw feeder tube 12 is placed on the beveled edge of the support frame 14.
Referring to fig. 4 and 5, the screw feeding tube 12 includes a circular housing and a screw rod disposed in the circular housing; a feeding motor 17 is arranged at one end of the circular shell; an output shaft of the feeding motor 17 is connected with a screw rod in the circular shell, and the other end of the circular shell is provided with a feeding port 13; the circular shell close to the feeding motor 17 is provided with a feeding hopper 11, the feeding hopper 11 is funnel-shaped, and the bottom of the feeding hopper 11 is communicated with the inside of the circular shell.
Referring to fig. 6, 7 and 8, in the present embodiment, the material stirring mechanism 2 includes a fixing frame 21 and a stirring bin 22 disposed on the fixing frame 21; blades 23 are arranged in the stirring bin 22; the bottom of the stirring bin 22 is provided with a feed opening 28; the outer wall of the stirring bin 22 is provided with five wedge-shaped rings 24.
Referring to fig. 6, 7 and 8, the fixing frame body 21 includes four fixing rods with the same structure and size, and the four fixing rods are symmetrically placed two by two and fixed on the symmetrical side walls of the stirring bin 22; the stirring bin 22 comprises a cylinder, a quadrangular cylinder and a bucket-shaped body which are connected from top to bottom; five wedge rings 24 are arranged on the outer wall of the cylinder; a rotating shaft is arranged between the two symmetrical side walls in the quadrangular cylinder, a blade 23 is arranged on the rotating shaft, the blade 23 comprises a plurality of blades which are spirally distributed on the rotating shaft, the rotating shaft is connected with a stirring motor, and the rotating shaft is driven to drive the blades to rotate for stirring; the bottom of the bucket body is provided with a feed opening 28.
Referring to fig. 9, the gripping member includes a wedge barrel 16 and a wedge ring 24; the wedge-shaped barrel 16 is sleeved on the spiral feeding pipe 12; five wedge rings 24 are all arranged on the outer wall of the stirring bin 22. When the spiral feeding pipe 12 is inserted into the wedge-shaped ring 24, the outer part of the wedge-shaped barrel 16 is matched and clamped with the inner wall of the wedge-shaped ring 24; the hopper 11 is now located laterally below the feed opening 28; the feed port 13 is located above the stirring hopper 22 (see fig. 1 and 4).
In this embodiment, the outer walls of the five wedge rings 24 are all provided with a triangular plate 25; five fixing plates 26 are arranged on the outer wall of the cylinder of the stirring bin 22; the five triangular plates 25 correspond to the five fixing plates 26 one by one and are connected through rotating shafts 27; so that the wedge ring 24 can rotate a certain angle to facilitate the installation of the spiral feeding pipe 12.
In the present embodiment, referring to fig. 6 and 9, the wedge-shaped barrel 16 includes a hollow barrel body and side walls disposed at both sides of the hollow barrel body; the longitudinal section of the wedge-shaped barrel 16 is isosceles trapezoid, and the hollow barrel is sleeved on the lifting feeding mechanism 1; the outer portion of the sidewall snaps into the wedge ring 24. The wedge ring 24 is in a circular truncated cone shape; and the outer surface dimension of the wedge barrel 16 matches the inner surface dimension of the wedge ring 24; the direction of the small round platform of the wedge-shaped ring 24 is consistent with the direction of the small round platform of the wedge-shaped barrel 16, the small round platforms face upwards, and the wedge-shaped barrel 16 is inserted into the wedge-shaped ring 24 from bottom to top and is tightly clamped with the wedge-shaped ring 24.
In this embodiment, the inner diameter of the wedge-shaped barrel 16 is the same as the outer diameter of the circular shell of the screw feeding pipe 12, and when the wedge-shaped barrel 16 is sleeved outside the circular shell, the small truncated cone end of the wedge-shaped barrel 16 is fixed to the circular shell.
In this embodiment, the discharge port 13 may be made of a material of cloth, so that when one end of the discharge port 13 of the spiral feeding pipe 12 passes through the wedge-shaped ring 24, the discharge port 13 is not clamped on the wedge-shaped ring 24.
Referring to fig. 10 and 11, the material conveying mechanism 3 includes a spiral conveying pipe 33 and a conveying motor 31 connected to one end of the spiral conveying pipe 33; the spiral conveying pipe 33 comprises a cylinder and a spiral conveying rod arranged in the cylinder, an opening is formed in the radial direction on the side wall of the cylinder, a conveying motor 31 is arranged at one end of the cylinder, and an output shaft of the conveying motor 31 is connected with one end of the spiral conveying rod; a material conveying port 34 is formed in the side wall of the cylinder at the other end of the spiral material conveying rod, and a material conveying hopper 32 communicated with an opening in the cylinder is arranged on the spiral material conveying pipe 33 close to the material conveying motor 31; the material conveying hopper 32 is shaped like a hopper, and the material conveying hopper 32 is arranged right below the feed opening 28.
The mixing and stirring device for the foundation pit backfill materials provided by the embodiment comprises the following specific construction steps during backfill construction:
1) the five lifting and feeding mechanisms 1 are moved to one sides of the five wedge-shaped rings 24 of the material stirring mechanism 2 through the rollers 15; the five lifting and feeding mechanisms 1 correspond to the five wedge-shaped rings 24 one by one, and for each lifting and feeding mechanism 1, the spiral feeding pipe 12 is obliquely placed on the support frame 14; one end of a feeding port 13 of the spiral feeding pipe 12 is respectively inserted upwards from the inner part of the corresponding wedge-shaped ring 24 until the outer surface of the wedge-shaped barrel 16 is contacted and clamped with the inner surface of the corresponding wedge-shaped ring 24; meanwhile, the triangular plate 25 is connected with the fixing plate 26 through the rotating shaft 27, and the wedge-shaped ring 24 rotates by an angle under the action of the rotating shaft 27, so that the spiral feeding pipe 12 is conveniently and tightly installed and clamped with the stirring bin 22; the five lifting and feeding mechanisms 1 are correspondingly clamped with the five wedge-shaped rings 24 respectively through the method, so that the five lifting and feeding mechanisms 1 are clamped with the material stirring mechanism 2;
2) the five lifting and feeding mechanisms 1 correspond to the five materials one by one; five materials are respectively put into the corresponding feeding hoppers 11 and are respectively lifted from the low position to the high position through the spiral feeding pipes 12, meanwhile, according to the required proportion, the feeding sequence and the stirring time of the five materials, the rotating speed of the feeding motors 17 corresponding to the five materials is adjusted, so that the falling speed of the five materials from the feeding ports 13 on the spiral feeding pipes 12 in unit time is controlled, the falling proportion, the falling sequence and the stirring time are further controlled, and finally the five materials fall into the stirring bin 22 according to the proportion and the sequence required by construction to be mixed and stirred, so that the backfill mixed material is obtained;
3) the backfill mixed material falls into the spiral conveying pipe 33 from the feed opening 28 through the conveying hopper 32, the conveying motor 31 drives the spiral conveying pipe 33 to drive the backfill mixed material to continuously move towards the conveying opening 34, finally, the backfill mixed material is continuously conveyed into the foundation pit to be backfilled from the conveying opening 34, and the foundation pit is tamped and maintained for 15-20 days after being filled with the foundation pit until the curing strength reaches 0.2-0.4MPa, so that the foundation pit backfilling is completed.
Example 2
The construction method of the mixing and stirring device for the foundation pit backfill materials provided by the invention is explained by taking the foundation pit backfill of a soft soil area as an example.
Aiming at a foundation pit in a soft soil area, five raw materials of clay, cement, fly ash, water and an additive are adopted during backfilling; when the depth of the foundation pit is 8m, the cured clay mixture has moderate fluidity and strength and cement content in the backfill mixture is moderate due to the fact that the depth of the foundation pit is within the range of 5-10 m; the proportion of the five materials is
Clay: cement: fly ash: water: the additive is 0.6:0.1:0.05:0.2: 0.05.
The adding sequence and the stirring time of the cured clay raw materials are as follows:
1) mixing water and the additive for 10 min;
2) adding cement, and stirring for 10 min;
3) adding fly ash, mixing for 15 min;
4) finally adding clay and stirring uniformly for 25 min; the stirring time was 1 hour in total.
In this embodiment, the construction method of the mixture for foundation pit backfill is as follows:
1) the five materials are respectively corresponding to the five lifting and feeding mechanisms 1;
2) calculating the rotating speed of a feeding motor 17 corresponding to each lifting and feeding mechanism 1 according to the proportion, the adding sequence and the stirring time of the five materials, and stirring for 10min when water and the admixture fall into a stirring bin 22; within 10min, the cement is lifted and sent to the stirring bin 22, and then stirred for 10 min; then the fly ash is sent into a stirring bin 22 and stirred for 15 min; finally, the clay is lifted and sent to the stirring bin 22 to be stirred for 25min, and the stirring speed is 4m3Min; the slump measured value of the foundation pit backfill material is 200mm, after stirring is completed, a feed opening 28 at the bottom of the stirring bin 22 is opened, and the stirred backfill mixture material falls into a material conveying hopper 32;
3) the backfilling mixed material in the material conveying hopper 32 falls into the spiral material conveying pipe 33, the backfilling mixed material is continuously conveyed into the foundation pit to be backfilled from the material conveying opening 34, the foundation pit is filled with the backfilling mixed material and is tamped and maintained for 18d until the curing strength reaches 0.3MPa, and the foundation pit backfilling is completed.
Example 3
Different from the embodiment 2, the depth of the foundation pit is 12m, and as the depth of the foundation pit is more than 10m, the fluidity of the cured clay mixture is higher, the strength is higher, and at the moment, the cement content in the mixture is increased by 15%; the proportion of the five materials is clay: cement: fly ash: water: the admixture was 0.585:0.115:0.05:0.2: 0.05.
In this embodiment, the construction method of the mixture for foundation pit backfill is as follows:
1) the five materials are respectively corresponding to the five lifting and feeding mechanisms 1;
2) calculating the rotating speed of a feeding motor 17 corresponding to each lifting and feeding mechanism 1 according to the proportion, the adding sequence and the stirring time of the five materials, and stirring for 10min when water and the admixture fall into a stirring bin 22; within the 10min, the cement is lifted and sent to the stirring bin 22, and then stirred for 10min (the speed of the cement is higher than that of the feeding motor corresponding to the cement in the embodiment 2); then the fly ash is sent into a stirring bin 22 and stirred for 15 min; finally, the clay is lifted and sent to the stirring bin 22 to be stirred for 25min at the stirring speed of 5m3Min; the slump measured value of the foundation pit backfill material is 180mm, after stirring is completed, a feed opening 28 at the bottom of the stirring bin 22 is opened, and the stirred backfill mixture material falls into a material conveying hopper 32;
3) the backfilling mixed material in the material conveying hopper 32 falls into the spiral material conveying pipe 33, the backfilling mixed material is continuously conveyed into the foundation pit to be backfilled from the material conveying opening 34, the foundation pit is filled with the backfilling mixed material, tamping and maintaining are carried out for 20d until the curing strength reaches 0.4MPa, and foundation pit backfilling is completed.
Example 4
When the depth of the foundation pit is 3m, the depth of the foundation pit is 0-5 m, the fluidity of the cured clay mixture is small, the strength is small, and the cement content in the mixture is reduced by 15%. The proportion of the five materials is clay: cement: fly ash: water: the additive is 0.615:0.085:0.05:0.2: 0.05.
In this embodiment, the construction method of the mixture for foundation pit backfill is as follows:
1) the five materials are respectively corresponding to the five lifting and feeding mechanisms 1;
2) calculating the rotating speed of a feeding motor 17 corresponding to each lifting and feeding mechanism 1 according to the proportion, the adding sequence and the stirring time of the five materials, and stirring for 10min when water and the admixture fall into a stirring bin 22; within the 10min, the cement is lifted and sent to the stirring bin 22, and then stirred for 10min (the feeding speed of the cement is lower than that of the feeding motor corresponding to the cement in the embodiment 2); then the fly ash is sent into a stirring bin 22 and stirred for 15 min; finally, the clay is lifted and sent to a stirring bin 22 to be stirred for 25min at the stirring speed of 3m3Min; the slump measured value of the foundation pit backfill material is 220mm, after stirring is completed, a feed opening 28 at the bottom of the stirring bin 22 is opened, and the stirred backfill mixture material falls into a material conveying hopper 32;
3) the backfilling mixed material in the material conveying hopper 32 falls into the spiral material conveying pipe 33, the backfilling mixed material is continuously conveyed into the foundation pit to be backfilled from the material conveying opening 34, the foundation pit is filled with the backfilling mixed material, tamping and maintaining are carried out for 15d until the curing strength reaches 0.2MPa, and foundation pit backfilling is completed.
In this embodiment, when the rotation speed of the feeding motor 17 corresponding to each lifting mechanism is set, the ratio of the five materials entering the stirring bin 22 is controlled according to the depths of the different soil foundation pits. Meanwhile, the stirring speed of the stirring bin 22 is controlled, so that the slump of the backfilling material meets the requirement.
The spiral feeding pipe and the stirring bin are conveniently installed and matched and clamped together through the clamping component, different materials are lifted to a certain height from a low position through the plurality of lifting and feeding mechanisms, the whole process is operated in the low position construction, the physical strength is saved, the construction cost is low, the quantity of the materials fed into the stirring material mechanism in unit time, the adding sequence of the materials into the stirring bin and the stirring time are controlled through setting the rotating speed of the material conveying motor, so that the proportion of the multiple materials meets the construction requirement, and after the materials are mixed and stirred by the material stirring mechanism, the backfill mixed materials are conveyed into a specified foundation pit through the material conveying mechanism; meanwhile, the proportioning, the feeding sequence and the stirring time of the materials can be controlled, and different construction occasions are met.
The present invention and the technical contents not specifically described in the above embodiments are the same as the prior art.
The above embodiments are only specific embodiments disclosed in the present invention, but the scope of the present invention is not limited thereto, and the scope of the present invention disclosed in the present invention should be subject to the scope of the claims.

Claims (10)

1. The utility model provides a be used for foundation ditch backfill material mixing stirring device which characterized in that: the mixing and stirring device for the foundation pit backfill materials comprises a material stirring mechanism, a clamping component and a plurality of lifting and feeding mechanisms; a plurality of promotion feeding mechanism all pass through chucking part and stirring material mechanism joint.
2. The mixing and stirring device for the foundation pit backfill materials according to claim 1, characterized in that: the lifting feeding mechanism comprises a support frame and a spiral feeding pipe obliquely arranged on the support frame; a feeding port is formed in the upper end of the spiral feeding pipe; a feeding hopper communicated with the interior of the spiral feeding pipe is arranged at the lower end of the spiral feeding pipe; and the spiral feeding pipe is also provided with a feeding motor.
3. The mixing and stirring device for the foundation pit backfill materials according to claim 2, characterized in that: the material stirring mechanism comprises a fixed frame body and a stirring bin arranged on the fixed frame body; blades are arranged in the stirring bin; and a feed opening is arranged at the bottom of the stirring bin.
4. The mixing and stirring device for the foundation pit backfill materials according to claim 3, characterized in that: the clamping component comprises a wedge-shaped barrel and a wedge-shaped ring which are matched with each other; the wedge-shaped barrel is sleeved on a spiral feeding pipe of the lifting feeding mechanism; the wedge-shaped ring is arranged on a stirring bin of the material stirring mechanism; the wedge-shaped barrel is inserted into the wedge-shaped ring and is clamped with the wedge-shaped ring.
5. The mixing and stirring device for the foundation pit backfill materials according to claim 4, characterized in that: the material stirring mechanism further comprises a fixing plate; the fixed plate is arranged on the stirring bin, and a triangular plate is arranged on the wedge-shaped ring; the set square is movably connected with the fixed plate through a rotating shaft.
6. The mixing and stirring device for the foundation pit backfill materials according to claim 5, characterized in that: the wedge-shaped barrel comprises a hollow barrel body and side walls arranged on two sides of the hollow barrel body; the longitudinal section of the wedge-shaped barrel is isosceles trapezoid, and the hollow barrel is sleeved on the spiral feeding pipe; the outer part of the side wall is clamped in a wedge-shaped ring, and the wedge-shaped ring is in a circular truncated cone shape; the size of the outer surface of the wedge-shaped barrel is matched with the size of the inner surface of the wedge-shaped ring; the small round platform direction of wedge ring is unanimous and all upwards with the small round platform orientation of wedge bucket, the wedge bucket from upwards poking in and with the wedge ring chucking from the wedge intra-annular down.
7. The mixing and stirring device for the foundation pit backfill materials according to any one of claims 3 to 6, characterized in that: the mixing and stirring device for the foundation pit backfill materials further comprises a material conveying mechanism arranged below the material stirring mechanism, the material conveying mechanism comprises a spiral conveying pipe and a conveying motor connected with one end of the spiral conveying pipe, a conveying port is formed in the side wall of the other end of the spiral conveying pipe, an opening is formed in the side wall of the spiral conveying pipe in the radial direction, and a conveying hopper communicated with the opening is arranged on the spiral conveying pipe close to the conveying motor; the conveying hopper is arranged right below the feed opening.
8. The construction method for the mixing and stirring device for the backfill materials of the foundation pit based on the claim 1 is characterized in that: the construction method comprises the following steps:
1) clamping a plurality of lifting and feeding mechanisms on the material stirring mechanism respectively, and clamping a wedge-shaped barrel sleeved on a spiral feeding pipe in a wedge-shaped ring; the spiral feeding pipe is firmly clamped with the stirring bin, and the whole backfill mixed material stirring device is placed near a foundation pit to be backfilled;
2) according to the proportion required by construction, the material adding sequence and the stirring time requirement, a plurality of materials required by backfilling are respectively conveyed into a material stirring mechanism from bottom to top through a plurality of lifting and feeding mechanisms to be mixed and stirred, so that a backfilling mixed material is obtained;
3) and conveying the backfilling mixed material into the foundation pit to be backfilled through a material conveying mechanism, tamping and maintaining for 15-20 days after the foundation pit is filled up until the curing strength reaches 0.2-0.4MPa, and completing foundation pit backfilling.
9. The construction method for the mixing and stirring device of the foundation pit backfill materials according to the claim 8, characterized by comprising the following steps: the specific steps of the step 2) are as follows: determining the proportion of raw materials required by construction, the material adding sequence and the stirring time according to the soil quality, and adjusting the rotating speed of a feeding motor corresponding to each of multiple materials, so as to control the feeding amount and the feeding speed of a spiral feeding pipe in unit time, and finally enabling the multiple materials to fall into a stirring bin from bottom to top for mixing and stirring according to the proportion, the material adding sequence and the stirring time required by construction; meanwhile, in the feeding process, the wedge-shaped barrel is tightly clamped with the wedge-shaped ring under the continuous upward thrust.
10. The construction method for the mixing and stirring device of the foundation pit backfill materials according to the claim 9, characterized by comprising the following steps: the rotating speed of a feeding motor of the lifting feeding mechanism in the step 2) is 30 r/min-60 r/min; stirring speed of stirring storehouse of stirring material mechanism 3m3/min—5m3And/min, wherein the slump measured value of the foundation pit backfill material stirred by the stirring bin is 180-220 mm.
CN202011416395.5A 2020-12-09 2020-12-09 Mixing and stirring device for foundation pit backfill materials and construction method Pending CN112554188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011416395.5A CN112554188A (en) 2020-12-09 2020-12-09 Mixing and stirring device for foundation pit backfill materials and construction method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011416395.5A CN112554188A (en) 2020-12-09 2020-12-09 Mixing and stirring device for foundation pit backfill materials and construction method

Publications (1)

Publication Number Publication Date
CN112554188A true CN112554188A (en) 2021-03-26

Family

ID=75058984

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011416395.5A Pending CN112554188A (en) 2020-12-09 2020-12-09 Mixing and stirring device for foundation pit backfill materials and construction method

Country Status (1)

Country Link
CN (1) CN112554188A (en)

Similar Documents

Publication Publication Date Title
CN104030722A (en) Production technology of aerated concrete block
CN105922438A (en) Concrete integral production system
CN104942998A (en) Green concrete construction equipment and construction method thereof
CN215241918U (en) High-efficient concrete feeding agitating unit
CN212100769U (en) Dry-mixed mortar conveying device
CN112554188A (en) Mixing and stirring device for foundation pit backfill materials and construction method
CN214783944U (en) Be used for foundation ditch backfill material mixing stirring device
CN110642588A (en) Process method for producing Lingmei building blocks
CN115742018A (en) Integrated fluidized solidified soil preparation device
CN211806980U (en) A flash mixed agitating unit for building material
CN214521132U (en) Multifunctional intermittent stirring equipment
CN108058269B (en) Cement soil preparation system suitable for soil bodies with different fluidity
CN113894929A (en) Intelligent grouting equipment for water-rich silty-fine sand stratum
CN111906940A (en) Slurry stirring and spraying machine for gelled sand gravel dam
CN215241772U (en) Cemented sand gravel production system
CN219726750U (en) Fine batching device of concrete mixing plant
CN217494718U (en) Liquid gelled material preparation facilities
CN216031617U (en) Dry powder ready-mixed mortar mixing device
CN204773036U (en) Green concrete construction equipment
CN215619127U (en) Desulfurization gypsum water-adding slurrying device for concrete production
CN215472084U (en) Concrete automatic feeding agitating unit
CN216639322U (en) Cooling structure for cement production
CN213922944U (en) Mortar conveying device
CN219794685U (en) Concrete conveying device
CN214871710U (en) Dry-mixed mortar mixing device

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination