CN108118728B - Efficient soil excavating device and method for special-shaped deep foundation pit - Google Patents
Efficient soil excavating device and method for special-shaped deep foundation pit Download PDFInfo
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- CN108118728B CN108118728B CN201711481752.4A CN201711481752A CN108118728B CN 108118728 B CN108118728 B CN 108118728B CN 201711481752 A CN201711481752 A CN 201711481752A CN 108118728 B CN108118728 B CN 108118728B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/02—Travelling-gear, e.g. associated with slewing gears
- E02F9/022—Travelling-gear, e.g. associated with slewing gears for moving on rails
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Abstract
The invention provides a high-efficiency soil excavating device and a soil excavating method for a special-shaped deep foundation pit, which can solve the problem of excavating the special-shaped deep foundation pit such as a round pit with a narrow field.
Description
Technical Field
The invention relates to an efficient soil excavating device and an efficient soil excavating method for a special-shaped deep foundation pit.
Background
The shape of the deep foundation pit comprises a rectangle, a polygon, a circle and the like. The special-shaped deep foundation pit mainly refers to a round deep foundation pit, can fully utilize the arch effect of soil, reduce the soil pressure acting on a supporting structure, convert the soil pressure acting on the supporting structure into internal pressure, and fully exert the advantages of concrete compressive resistance and the like.
An excavator is frequently used in the process of excavating a deep foundation pit, and a long-arm excavator is widely applied to excavation of the deep foundation pit. When a deep foundation pit with the diameter of several meters, dozens of meters or even tens of meters, and the depth of over ten meters or even tens of meters is excavated, the existing long-arm excavator has the disadvantages of limited specification, limited excavation depth, large operation occupation space, low excavation efficiency, high manufacturing cost and modification cost and the like in the application process; in addition, if the soil layer in the foundation pit is weak, the construction excavator is difficult to put down, and the construction requirement of the deep foundation pit with the weak soil layer, which is nervous or narrow, at the peripheral position of the circular deep foundation pit field is difficult to meet.
Disclosure of Invention
The invention aims to provide an efficient digging device and a digging method for a special-shaped deep foundation pit, which can solve the problems that the conventional long-arm excavator is limited in specification, limited in digging depth, large in occupied space for operation, low in digging efficiency, high in manufacturing cost and modification cost, and hard to lower a construction excavator due to soft soil layers in the foundation pit, and hard to meet the construction requirements of the deep foundation pit with the soft soil layer, which is short or narrow, at the peripheral position of a circular deep foundation pit field.
In order to solve the above problems, the present invention provides an earth-moving device for a special-shaped deep foundation pit, comprising:
the annular deep foundation pit groove is arranged along the periphery of the special-shaped deep foundation pit to be excavated;
the annular underground concrete continuous wall is arranged in the deep foundation pit groove, and a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals according to a preset height;
the annular steel guide rail is arranged on the annular underground concrete continuous wall and is connected with the internal thread sleeve of the corresponding layer according to the construction height;
the earth-digging bucket is provided with a guide rail wheel set and a wall-attached wheel set, the guide rail wheel set is clamped at the edge of the annular steel guide rail, and the wall-attached wheel set is attached to the annular underground concrete continuous wall at the lower part of the annular steel guide rail;
the steel frame box is used for containing soil dug in the special-shaped deep foundation pit;
the earth hoisting frame is arranged on the ground outside the annular underground concrete continuous wall;
and the electric block is arranged on the earth hoisting frame and is used for hoisting the steel frame box.
Further, in the above apparatus, the excavating bucket further comprises:
an earth-moving bucket body;
the guide rail wheel set is arranged at the upper end of the support frame, and the wall attaching wheel set is arranged at the lower end of the support frame;
and the power supply cavity is respectively connected with the soil digging bucket body, the slewing bearing, the guide rail wheel set and the wall attaching wheel set.
Further, in the above device, the annular steel guide rail is formed by connecting a plurality of H-shaped steel guide rail sections end to form an annular steel guide rail.
Furthermore, in the device, the periphery of the annular underground concrete continuous wall is also connected with a waterproof step, and the top elevation of the waterproof step is higher than that of the annular underground concrete continuous wall.
Further, in the above device, the device further comprises a crawler crane arranged on the ground outside the annular underground concrete continuous wall, and the crawler crane is used for hoisting the annular steel guide rail to the position of the internal thread sleeve of the corresponding layer of the annular underground concrete continuous wall.
According to another aspect of the present invention, there is provided an excavation method for a special-shaped deep foundation pit, including:
arranging an annular deep foundation pit groove along the periphery of the special-shaped deep foundation pit to be excavated;
forming an annular underground concrete continuous wall in the deep foundation pit groove, wherein a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals of preset height;
connecting the annular steel guide rail with an internal thread sleeve of a corresponding layer on the annular underground concrete continuous wall according to the construction height;
clamping a guide rail wheel set of the excavating bucket at the edge of the annular steel guide rail, and attaching a wall attaching wheel set of the excavating bucket to an annular underground concrete continuous wall at the lower part of the annular steel guide rail;
mounting a soil hoisting frame on the ground outside the annular underground concrete continuous wall;
an electric hoist is arranged on the soil hoisting frame;
the digging bucket digs soil along the annular steel guide rail and conveys the dug soil into a steel frame box at a soil taking point;
and hoisting the steel frame box by an electric hoist on the soil hoisting frame so as to transport the soil away.
Further, in the above method, before the step of clamping the guide wheel set of the excavating bucket on the edge of the annular steel guide rail and attaching the wall attaching wheel set of the excavating bucket on the annular underground concrete continuous wall at the lower part of the annular steel guide rail, the method further comprises:
connecting a slewing bearing with an earth-digging bucket body, and connecting a support frame with the slewing bearing;
the upper end of the support frame is connected with the guide rail wheel set, and the lower end of the support frame is connected with the wall-attached wheel set;
and respectively connecting the power supply cavity with the soil digging bucket body, the slewing bearing, the guide rail wheel set and the wall attaching wheel set.
Further, in the above method, the excavating bucket excavating along the endless steel guide rail includes:
the power supply cavity controls the excavation bucket body to perform excavation operation;
the power supply cavity drives the slewing bearing to adjust the excavating angle of the excavating bucket body;
the power supply cavity drives the guide rail wheel set and the wall attaching wheel set to travel on the annular steel guide rail, and the excavation position of the excavation bucket body is adjusted.
Further, in the above method, the connecting the annular steel guide rail to the internal thread sleeve of the corresponding layer of the annular underground concrete continuous wall according to the construction height comprises:
connecting a plurality of sections of H-shaped steel guide rail sections with internal thread sleeves on corresponding layers of the annular underground concrete continuous wall according to the construction height;
the H-shaped steel guide rail sections are connected end to form the annular steel guide rail.
Further, in the above method, after the annular underground concrete diaphragm wall is formed in the deep foundation pit trench, the method further includes:
and the periphery of the annular underground concrete continuous wall is provided with a waterproof step, and the top elevation of the waterproof step is higher than that of the annular underground concrete continuous wall.
Further, in the above method, after the steel frame box is hoisted by the electric hoist on the soil hoisting frame to transport the soil away, the method further includes:
arranging a crawler crane on the ground outside the annular underground concrete continuous wall;
the earth hoisting frame and the electric hoist on the earth hoisting frame are moved away through the crawler crane;
dismantling the annular steel guide rail connected with the upper layer of the internal thread sleeve of the annular underground concrete continuous wall through the crawler crane, and hoisting the dismantled annular steel guide rail to the position of the internal thread sleeve of the lower layer of the annular underground concrete continuous wall;
connecting the annular steel guide rail with the internal thread sleeve of the next layer so as to fix the annular steel guide rail at the position of the next layer of the annular underground concrete continuous wall;
and moving the soil hoisting frame and the electric hoist on the soil hoisting frame back to the original position through the crawler crane.
Further, in the above method, forming an annular underground concrete continuous wall in the deep foundation pit trench, wherein a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals of a preset height, the method includes:
arranging a steel reinforcement cage of the underground concrete continuous wall, and bundling an internal thread sleeve fixedly connected with the annular steel guide rail on the steel reinforcement cage according to the interval of the excavated layers;
hoisting the reinforcement cage bound with the internal thread sleeve into the deep foundation pit groove;
and pouring concrete in the reinforcement cage to form the underground concrete continuous wall.
Compared with the prior art, the invention can solve the excavation problem of the irregular deep foundation pit with a narrow circular field and the like, the annular steel guide rail is connected with the internal thread sleeve of the corresponding layer according to the construction height, the excavating bucket with the guide rail wheel set and the wall-attached wheel set can stably and reliably walk on the annular steel guide rail, the annular steel guide rail can be arranged at the required depth, the excavating bucket can work at any depth, the operation occupies small space, and the excavating efficiency is high.
Drawings
Fig. 1 is a plan layout view of a round deep foundation pit as an irregular deep foundation pit according to an embodiment of the present invention;
FIG. 2 is a schematic view of an earth-moving bucket in accordance with one embodiment of the present invention;
FIG. 3 is a schematic view of the connection of an annular steel guide rail of one embodiment of the present invention to an internally threaded sleeve of the first course on an underground concrete diaphragm wall;
FIG. 4 is a schematic illustration of an earth-moving bucket of one embodiment of the present invention traveling on an endless steel rail;
FIG. 5 is a schematic illustration of an earth moving bucket of one embodiment of the present invention;
FIG. 6 is a schematic illustration of an earth-moving bucket of one embodiment of the present invention delivering earth to a fixed earth-moving point;
FIG. 7 is a schematic illustration of the hoisting of a first layer of endless steel guide rails to a second layer position in accordance with an embodiment of the present invention;
FIG. 8 is an enlarged schematic view of the connection of the annular steel guide rail of FIG. 7 to the internally threaded sleeve of the second layer of the underground concrete diaphragm wall;
FIG. 9 is a schematic view of excavating and lifting a second layer of earth in accordance with an embodiment of the present invention;
fig. 10 is a flowchart of an earth excavation method for a special-shaped deep foundation pit according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention provides a soil digging device for a special-shaped deep foundation pit, which comprises:
as shown in fig. 1, an annular deep foundation pit groove is formed along the periphery of a special-shaped deep foundation pit 11 to be excavated, and the special-shaped deep foundation pit 11 in fig. 1 is a circular deep foundation pit;
as shown in fig. 3, an annular underground concrete continuous wall 12 is arranged in the deep foundation pit groove, and a plurality of layers of internal thread sleeves 13 are pre-embedded in the annular underground concrete continuous wall 12 at intervals of a preset height;
as shown in fig. 4, the annular steel guide rail 14 is arranged on the annular underground concrete continuous wall 12, and the annular steel guide rail 14 is connected with the internal thread sleeve 13 of the corresponding layer according to the construction height;
as shown in fig. 4, the excavating bucket 15 is provided with a guide rail wheel set 3 and a wall-attached wheel set 5, the guide rail wheel set 3 is clamped at the edge of the annular steel guide rail 14, and the wall-attached wheel set 5 is attached to the annular underground concrete continuous wall 12 at the lower part of the annular steel guide rail 14;
as shown in fig. 5, a steel frame box 16 for containing soil dug in the special-shaped deep foundation pit 11;
a soil hoisting frame 17 arranged on the ground outside the annular underground concrete continuous wall 12;
and the electric hoist 18 is arranged on the soil hoisting frame 17 and is used for hoisting the steel frame box 16.
The invention can solve the excavation problem of the irregular deep foundation pit such as a round pit with a narrow field, the annular steel guide rail is connected with the internal thread sleeve of the corresponding layer according to the construction height, the excavating bucket with the guide rail wheel set and the wall-attached wheel set can stably and reliably walk on the annular steel guide rail, the annular steel guide rail can be arranged at the required depth, the excavating bucket can work at any depth, the operation occupation space is small, and the excavating efficiency is high.
In an embodiment of the present invention, as shown in fig. 2, the excavating bucket further includes:
an earth-moving bucket body 6;
the excavator bucket comprises a slewing bearing 2 connected with an excavating bucket body 6 and a supporting frame 4 connected with the slewing bearing 2, wherein the upper end of the supporting frame 4 is provided with a guide rail wheel set 3, and the lower end of the supporting frame 4 is provided with a wall-attached wheel set 5;
and the power supply cavity is respectively connected with the soil digging bucket body 6, the slewing bearing 2, the guide rail wheel set 3 and the wall attaching wheel set 5.
The power supply cavity can control the excavation bucket body to perform excavation operation; when the excavation angle of the excavation bucket body needs to be adjusted, the power supply cavity can drive the slewing bearing to adjust the excavation angle of the excavation bucket body; when the excavation position of the excavation bucket body needs to be adjusted, the power supply cavity can drive the guide rail wheel set and the wall-attached wheel set to walk on the annular steel guide rail, and the excavation position of the excavation bucket body is adjusted.
In an embodiment of the excavation device for the special-shaped deep foundation pit, the annular steel guide rail 14 is formed by connecting a plurality of sections of H-shaped steel guide rail sections end to form an annular steel guide rail.
Here, multistage shaped steel guide rail section end to end connection can make things convenient for the dismouting, can be fast with annular steel guide rail to arbitrary high position of annular underground concrete continuous wall, and the intensity of annular steel guide rail can further be guaranteed for the H type to the steel guide rail section.
In an embodiment of the excavating device for the special-shaped deep foundation pit, as shown in fig. 3, the periphery of the annular underground concrete continuous wall 12 is further connected with a waterproof step 19, and the top elevation of the waterproof step is higher than that of the annular underground concrete continuous wall, so that water is prevented from flowing into the special-shaped deep foundation pit from the outside of the special-shaped deep foundation pit in the construction process of excavating the special-shaped deep foundation pit and affecting the construction operation. As shown in fig. 3, the waterproof step 19 may be provided in an L shape, the long side of the L-shaped waterproof step is connected to the annular underground concrete continuous wall 12, and the short side of the L-shaped waterproof step is higher than the top elevation of the waterproof step 19, so as to further ensure the waterproof effect.
As shown in fig. 7 to 9, in an embodiment of the earth-moving device for the irregular deep foundation pit, the earth-moving device further comprises a crawler crane 20 arranged on the ground outside the annular underground concrete continuous wall 12, wherein the crawler crane 20 is used for hoisting the annular steel guide rail 14 to the position of the internally threaded sleeve 13 of the corresponding layer of the annular underground concrete continuous wall 12.
When the upper layer of the special-shaped deep foundation pit is excavated and the lower layer of soil needs to be excavated, the annular steel guide rail can be hoisted to the position of the internal thread sleeve of the lower layer of the annular underground concrete continuous wall through the crawler crane, and then the excavation bucket can carry out excavation construction on the lower layer after the annular steel guide rail and the internal thread sleeve of the lower layer.
The invention also provides another earth excavating method for the special-shaped deep foundation pit, which comprises the following steps:
step S1, as shown in figure 1, arranging an annular deep foundation pit groove along the periphery of a special-shaped deep foundation pit 11 to be excavated;
step S2, as shown in fig. 3 and 7, forming an annular underground concrete continuous wall 12 in the deep foundation pit slot, wherein a plurality of layers of internal thread sleeves 13 are pre-embedded on the annular underground concrete continuous wall 12 at intervals of a preset height;
step S3, as shown in figure 3, connecting the annular steel guide rail 14 with the internal thread sleeve 13 on the corresponding layer of the annular underground concrete continuous wall 12 according to the construction height;
step S4, as shown in FIG. 4, clamping the guide rail wheel set 3 of the excavating bucket 15 on the edge of the annular steel guide rail 14, and attaching the wall attaching wheel set 5 of the excavating bucket 15 on the annular underground concrete continuous wall 12 at the lower part 14 of the annular steel guide rail;
step S5, as shown in figure 5, installing a soil hoisting frame 17 on the ground outside the annular underground concrete continuous wall 12;
s6, mounting an electric hoist 18 on the soil hoisting frame 17;
s7, excavating soil by an excavating bucket 15 along the annular steel guide rail 14, and transporting the excavated soil to a steel frame box 16 of a soil taking point;
and S8, hoisting the steel frame box 16 by the electric hoist 18 on the soil hoisting frame 17 to convey soil away.
The invention can solve the excavation problem of the irregular deep foundation pit with a narrow circular field and the like, the annular steel guide rail is connected with the internal thread sleeve of the corresponding layer according to the construction height, the excavating bucket with the guide rail wheel set and the wall-attached wheel set can stably and reliably walk on the annular steel guide rail, the annular steel guide rail can be arranged at the required depth, the excavating bucket can work at any depth, the operation occupation space is small, the excavating efficiency is high, the invention has low manufacturing cost, solves the problems that the construction field around the circular deep foundation pit is narrow, a long arm excavator cannot pass through or a soft soil layer in the foundation pit and the construction excavator cannot be put down, and the construction of the deep foundation pit cannot be carried out, and can meet the construction requirement of the deep foundation pit with the narrow or short soft soil layer at the peripheral position of the circular deep foundation pit.
In an embodiment of the excavation method for the special-shaped deep foundation pit, in step S4, before the step of clamping the guide rail wheel set of the excavation bucket at the edge of the annular steel guide rail and attaching the wall attaching wheel set of the excavation bucket to the annular underground concrete continuous wall at the lower part of the annular steel guide rail, the excavation method further includes:
as shown in fig. 2, a slewing bearing 2 is connected to an excavating bucket body 6, and a support frame 4 is connected to the slewing bearing 2;
the upper end of the support frame 4 is connected with the guide rail wheel set 3, and the lower end of the support frame 4 is connected with the wall-attached wheel set 5;
and respectively connecting the power supply cavity 1 with the soil digging bucket body 6, the slewing bearing 2, the guide rail wheel set 3 and the wall attaching wheel set 5.
In an embodiment of the excavation method for the irregular deep foundation pit of the present invention, in step S7, the excavation bucket excavates soil along the annular steel guide rail, and includes:
as shown in fig. 4, the power supply cavity 1 controls the excavating bucket body 6 to perform an excavating operation;
when the excavation angle of the excavation bucket body needs to be adjusted, the power supply cavity 1 drives the slewing bearing 2 to adjust the excavation angle of the excavation bucket body 6;
when the excavation position of the excavation bucket body 6 needs to be adjusted, the power supply cavity 1 drives the guide rail wheel set 3 and the wall-attached wheel set 5 to travel on the annular steel guide rail 14, so that the excavation position of the excavation bucket body is adjusted.
In one embodiment of the excavation method for the special-shaped deep foundation pit, the step S3 of connecting the annular steel guide rail with the internal thread sleeve of the corresponding layer on the annular underground concrete continuous wall according to the construction height comprises the following steps:
connecting a plurality of sections of H-shaped steel guide rail sections with an internal thread sleeve 13 on a corresponding layer of the annular underground concrete continuous wall 12 according to the construction height;
the multiple sections of H-shaped steel guide rail sections are connected end to form the annular steel guide rail 14.
Here, multistage shaped steel guide rail section end to end connection can make things convenient for the dismouting, can be fast with arbitrary high position of annular steel guide rail to annular underground concrete continuous wall, and the intensity of annular steel guide rail can further be guaranteed for the H type to the steel guide rail section.
In an embodiment of the excavation method for the special-shaped deep foundation pit, in step S2, after the annular underground concrete continuous wall is formed in the deep foundation pit groove, the excavation method further includes:
as shown in fig. 3, the periphery of the annular underground concrete continuous wall 12 is provided with a waterproof step 19, the top elevation of the waterproof step 19 is higher than that of the annular underground concrete continuous wall 12, so that in the construction process of excavating the special-shaped deep foundation pit, water flows into the special-shaped deep foundation pit from the outside of the special-shaped deep foundation pit and influences the construction operation. As shown in fig. 3, the waterproof step 19 may be provided in an L shape, the long side of the L-shaped waterproof step is connected to the annular underground concrete continuous wall 12, and the short side of the L-shaped waterproof step is higher than the top elevation of the waterproof step 19, so as to further ensure the waterproof effect.
In an embodiment of the excavation method for the special-shaped deep foundation pit, in step S8, after the steel frame box is hoisted by the electric hoist on the soil hoisting frame to transport soil away, the excavation method further includes:
as shown in fig. 7, a crawler crane 20 is provided on the ground outside the annular underground concrete diaphragm wall 12;
the earth hoisting frame 17 and the electric hoist 18 thereon are moved away by the crawler crane 20;
as shown in fig. 7, the annular steel guide rail 14 connecting the annular underground concrete continuous wall 12 with the internally threaded sleeve 13 of the upper layer is removed by the crawler crane 20, as shown in fig. 7 and 8, and the removed annular steel guide rail 14 is hoisted to the position of the internally threaded sleeve of the lower layer of the annular underground concrete continuous wall 12;
as shown in fig. 8, the annular steel guide rail 14 is connected with the internal threaded sleeve 13 of the next layer so as to fix the annular steel guide rail 14 at the position of the next layer of the annular underground concrete continuous wall 12;
as shown in fig. 9, the earth hoist frame 17 and the electric block 18 thereon are moved back to their original positions by the crawler crane 20.
When the excavation of the upper layer of the special-shaped deep foundation pit is finished and the next layer of soil needs to be excavated, the crawler crane can be used for hoisting the annular steel guide rail to the position of the internal thread sleeve of the next layer of the annular underground concrete continuous wall, and then the excavation bucket 15 can carry out excavation construction on the next layer after the annular steel guide rail and the internal thread sleeve of the layer are connected.
In an embodiment of the excavation method for the special-shaped deep foundation pit, in step S2, an annular underground concrete continuous wall is formed in the deep foundation pit groove, wherein a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals of a preset height, and the method includes:
arranging a steel reinforcement cage of the underground concrete continuous wall, and bundling an internal thread sleeve fixedly connected with the annular steel guide rail on the steel reinforcement cage according to the interval of the excavated layers;
the reinforcement cage which is bound with the internal thread sleeve is hoisted into the deep foundation pit groove,
concrete is poured into the reinforcement cage to form the underground concrete continuous wall 12.
As shown in fig. 1 to 10, a method for performing excavation according to a specific embodiment of the present invention includes:
1. preparing equipment and equipment for excavating a circular deep foundation pit.
The steel reinforcement cage that sets up underground concrete continuous wall is in according to the layer interval of cutting earth tie up fixed connection on the steel reinforcement cage internal thread sleeve 13 that the annular steel guide rail was used to cover the plastics visor, will attach the steel reinforcement cage of pre-buried internal thread sleeve and hang and put into deep basal pit groove, and concrete formation underground concrete continuous wall 12 is pour to the steel reinforcement cage. And after the concrete is finally set, starting the installation of the earthwork excavation hoisting equipment of the first layer of the circular deep foundation pit, including the installation of the annular track 14, the earthwork excavation equipment 15 and the hoisting equipment 16, 17 and 18. The annular steel rail 14 is formed by connecting a plurality of sections of H steel guide rails together through high-strength bolts and is arranged on the inner side of the annular underground concrete continuous wall 12, the guide rail sections are connected through the high-strength bolts from head to tail, and in addition, the guide rails 14 are connected with the embedded internal thread sleeves 14 on the underground concrete continuous wall 12 through the high-strength bolts. After the guide rails 14 are installed, an earth-moving bucket 15 with a traveling device is mounted thereon. The excavating bucket 15 with the traveling device comprises a power supply cavity 1, an upper pulley block 3, a lower pulley block 5, a support frame 4, a slewing bearing 2 and an excavating bucket body 6, wherein the power supply cavity 1 and the excavating bucket body 6 are welded together, a pulley of the upper pulley block is clamped on the edge of an H-shaped steel guide rail, the fixed end of the upper pulley block 3 is welded together with an upper cross beam of the support frame 4, a pulley of the lower pulley block 5 is attached to a diaphragm wall 12, and the fixed end of the lower pulley block 5 is also welded together with a lower cross beam of the support frame 4. The rotation of the excavating bucket is realized by driving the slewing bearing 2 through the power supply cavity 1, the movement of the excavating bucket body 6 is realized by driving the oil cylinder on the excavating bucket body 6 through the power supply cavity 1, and the movement of the excavating bucket along the H guide rail is realized by driving the pulley blocks 3 and 5 to roll through the power supply cavity 1. As shown in fig. 6, the earth-moving bucket 15 moves earth along the guide rails and returns the earth to a designated earth-taking point 21, and a steel frame box 16 containing earth is placed, and an earth hoist 17 is placed on the rear upper side.
2. A sufficient number of the excavating buckets 15 and the electric block 18 are arranged according to schedule, the excavating buckets excavate and transport earth along the endless track, and the excavated earth is loaded into the steel frame box 16 at a designated position.
3. The steel frame box 16 filled with the soil is hoisted by an electric hoist 18 on a soil hoisting frame 17 and is hoisted into the other earth square vehicle 22 along a track 14 on the hoisting frame.
4. After the first layer of earthwork is removed, whether the excavating equipment is excavated to the final design height (depth) can be roughly judged through the elongation of the steel wire rope of the electric hoist 18 and the height of the steel frame box 16. And if the designed depth is reached, the excavation is stopped, and the related equipment is removed. If the design depth is not dug, the following operations are continued.
5. Digging to the next layer of annular rail 14 mounting position and leaking, and stopping digging.
6. The crawler crane 20 removes the earth hoisting frame 17, removes the upper layer of the annular track 14 section by section, hoists to the next layer of the installation position, and is fixedly connected with the underground continuous wall 12. The method comprises the following specific steps: the hook of the crawler crane 20 moves to the position right above one section of the annular track 14, the hook is placed into the pit 11 to hoist the section of the H steel guide rail, high-strength bolts on the track are loosened before hoisting, the track is hoisted to the next layer of installation position, and the track is connected with an internal thread sleeve 13 pre-buried in the underground continuous wall through the high-strength bolts and is fixedly connected with the underground continuous wall 12.
7. Similarly, hoisting the H steel guide rail section adjacent to the end in place, and connecting and fixing the annular track section 14 on the next underground continuous wall 12 through the high-strength bolt and the internal thread sleeve 13.
8. The lifting of the excavating bucket 15, with the circular track section 14 in place, is operated as above.
9. The excavating bucket 15 excavates and transports the next layer of earth. And repeating the above operation until the designed depth of the deep foundation pit is excavated, stopping excavating the soil, and dismantling the equipment.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
It will be apparent to those skilled in the art that various changes and modifications may be made in the invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (12)
1. The utility model provides an earth-digging device for dysmorphism deep basal pit which characterized in that includes:
the annular deep foundation pit groove is arranged along the periphery of the special-shaped deep foundation pit to be excavated;
the annular underground concrete continuous wall is arranged in the deep foundation pit groove, and a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals according to a preset height;
the annular steel guide rail is arranged on the annular underground concrete continuous wall and is connected with the internal thread sleeve of the corresponding layer according to the construction height;
the earth-digging bucket is provided with a guide rail wheel set and a wall-attached wheel set, the guide rail wheel set is clamped at the edge of the annular steel guide rail, and the wall-attached wheel set is attached to the annular underground concrete continuous wall at the lower part of the annular steel guide rail;
the steel frame box is used for containing soil dug out in the special-shaped deep foundation pit;
the earth hoisting frame is arranged on the ground outside the annular underground concrete continuous wall;
and the electric hoist is arranged on the soil hoisting frame and used for hoisting the steel frame box.
2. The excavation apparatus for a shaped deep foundation pit according to claim 1, wherein the excavation bucket further comprises:
an earth-moving bucket body;
the upper end of the support frame is provided with the guide rail wheel set, and the lower end of the support frame is provided with the wall attaching wheel set;
and the power supply cavity is respectively connected with the soil digging bucket body, the slewing bearing, the guide rail wheel set and the wall attaching wheel set.
3. The earth moving device for the special-shaped deep foundation pit as claimed in claim 1, wherein the annular steel guide rail is formed by connecting a plurality of H-shaped steel guide rail sections end to form an annular steel guide rail.
4. The soil excavating device for the special-shaped deep foundation pit as claimed in claim 1, wherein a waterproof step is further connected to the periphery of the annular underground concrete continuous wall, and the top elevation of the waterproof step is higher than that of the annular underground concrete continuous wall.
5. An earth moving device for a special-shaped deep foundation pit as claimed in any one of claims 1 to 4, further comprising a crawler crane arranged on the ground outside the annular underground concrete continuous wall, wherein the crawler crane is used for hoisting the annular steel guide rail to the position of the internally threaded sleeve of the corresponding layer of the annular underground concrete continuous wall.
6. A method for excavating soil for a special-shaped deep foundation pit is characterized by comprising the following steps:
arranging an annular deep foundation pit groove along the periphery of the special-shaped deep foundation pit to be excavated;
forming an annular underground concrete continuous wall in the deep foundation pit groove, wherein a plurality of layers of internal thread sleeves are pre-embedded in the annular underground concrete continuous wall at intervals of preset height;
connecting the annular steel guide rail with an internal thread sleeve of a corresponding layer on the annular underground concrete continuous wall according to the construction height;
clamping a guide rail wheel set of the excavating bucket at the edge of the annular steel guide rail, and attaching a wall attaching wheel set of the excavating bucket to an annular underground concrete continuous wall at the lower part of the annular steel guide rail;
mounting a soil hoisting frame on the ground outside the annular underground concrete continuous wall;
an electric hoist is arranged on the soil hoisting frame;
the excavating bucket excavates soil along the annular steel guide rail and conveys the excavated soil into the steel frame box of the soil taking point;
and hoisting the steel frame box by using an electric hoist on the soil hoisting frame so as to convey soil away.
7. The method of claim 6, wherein the wheel set of the guide rail of the excavating bucket is clamped at the edge of the annular steel guide rail, and before the wheel set of the wall attachment of the excavating bucket is attached to the annular underground concrete continuous wall at the lower part of the annular steel guide rail, the method further comprises:
connecting a slewing bearing with an earth-digging bucket body, and connecting a support frame with the slewing bearing;
the upper end of the support frame is connected with the guide rail wheel set, and the lower end of the support frame is connected with the wall-attached wheel set;
and respectively connecting the power supply cavity with the soil digging bucket body, the slewing bearing, the guide rail wheel set and the wall attaching wheel set.
8. The excavation method for the irregular deep foundation pit as set forth in claim 7, wherein an excavating bucket excavates earth along the annular steel guide rail, comprising:
the power supply cavity controls the excavation bucket body to perform excavation operation;
the power supply cavity drives the slewing bearing to adjust the excavating angle of the excavating bucket body;
the power supply cavity drives the guide rail wheel set and the wall-attached wheel set to travel on the annular steel guide rail, and the excavation position of the excavation bucket body is adjusted.
9. The excavation method for the special-shaped deep foundation pit as claimed in claim 6, wherein the step of connecting the annular steel guide rail with the internal thread sleeve of the corresponding layer on the annular underground concrete continuous wall according to the construction height comprises the following steps:
connecting a plurality of sections of H-shaped steel guide rail sections with internal thread sleeves on corresponding layers of the annular underground concrete continuous wall according to the construction height;
the H-shaped steel guide rail sections are connected end to form the annular steel guide rail.
10. The excavation method for the irregular deep foundation pit as set forth in claim 6, wherein after the annular underground concrete continuous wall is formed in the deep foundation pit groove, further comprising:
and the periphery of the annular underground concrete continuous wall is provided with a waterproof step, and the top elevation of the waterproof step is higher than that of the annular underground concrete continuous wall.
11. The excavation method for the special-shaped deep foundation pit as claimed in claim 6, wherein after the steel frame box is hoisted by the electric hoist on the earth hoisting frame to carry away the earth, further comprising:
arranging a crawler crane on the ground outside the annular underground concrete continuous wall;
the earth hoisting frame and the electric hoist on the earth hoisting frame are moved away through the crawler crane;
dismantling the annular steel guide rail connected with the upper layer of the internal thread sleeve of the annular underground concrete continuous wall through the crawler crane, and hoisting the dismantled annular steel guide rail to the position of the internal thread sleeve of the lower layer of the annular underground concrete continuous wall;
connecting the annular steel guide rail with the internal thread sleeve of the next layer so as to fix the annular steel guide rail at the position of the next layer of the annular underground concrete continuous wall;
and moving the soil hoisting frame and the electric block on the soil hoisting frame back to the original position through the crawler crane.
12. The excavation method for the irregular deep foundation pit as claimed in any one of claims 6 to 11, wherein an annular underground concrete continuous wall is formed in the deep foundation pit groove, wherein a plurality of layers of internally threaded sleeves are pre-embedded in the annular underground concrete continuous wall at intervals of a predetermined height, comprising:
arranging a steel reinforcement cage of the underground concrete continuous wall, and bundling an internal thread sleeve fixedly connected with the annular steel guide rail on the steel reinforcement cage according to the interval of the excavated layers;
hoisting the reinforcement cage bound with the internal thread sleeve into the deep foundation pit groove;
and pouring concrete in the reinforcement cage to form the underground concrete continuous wall.
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| CN201711481752.4A CN108118728B (en) | 2017-12-29 | 2017-12-29 | Efficient soil excavating device and method for special-shaped deep foundation pit |
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| US6367177B1 (en) * | 1999-12-16 | 2002-04-09 | Richard Mullen | Trench restoration apparatus |
| JP2004092128A (en) * | 2002-08-30 | 2004-03-25 | Kobelco Contstruction Machinery Ltd | Underground continuous groove excavating method and underground continuous groove excavator |
| CN101736763A (en) * | 2008-11-27 | 2010-06-16 | 上海市第二市政工程有限公司 | Foundation pit excavator |
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