CN114837175B - Mounting device and mounting method for prefabricated retaining wall of manual hole digging pile - Google Patents
Mounting device and mounting method for prefabricated retaining wall of manual hole digging pile Download PDFInfo
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- CN114837175B CN114837175B CN202210577401.8A CN202210577401A CN114837175B CN 114837175 B CN114837175 B CN 114837175B CN 202210577401 A CN202210577401 A CN 202210577401A CN 114837175 B CN114837175 B CN 114837175B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/66—Mould-pipes or other moulds
- E02D5/68—Mould-pipes or other moulds for making bulkheads or elements thereof
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
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Abstract
The mounting device comprises a rail, wherein a sliding plate capable of sliding along the length direction of the rail is arranged on the rail, and a first driving component for driving the sliding plate to move in a reciprocating manner is arranged on the rail; the sliding plate is provided with a lifting plate with adjustable height, and the lifting plate is provided with a tray capable of rotating circumferentially. The application also discloses an installation method for installing the prefabricated retaining wall of the manual hole digging pile by using the installation device. Through changing cast-in-place manual hole digging pile dado into the dado of prefabricated segmental and segmental prefabricated burst equipment in this application, overcome cast-in-place dado and need spend the not enough of a large amount of times waiting for the concrete solidification, and can save artifically through the prefabricated burst of quick travel in narrow and small limited space of above-mentioned installation device, construction speed is fast, and the security is high.
Description
Technical Field
The application relates to the technical field of engineering building construction, in particular to a mounting device and a mounting method for a prefabricated retaining wall of a manual hole digging pile.
Background
The manual hole digging pile is a reinforced concrete pile which is manually dug and cast in place. The manual hole digging pile is generally thick in diameter, the thinnest is more than 800 mm, a structural main body with high bearing pressure can be borne, and the application is common. The pile is provided with bearing platform and connected with bearing platform beam to distribute the stress of the piles homogeneously for supporting the whole building. In the process of manually digging the hole, a layer of retaining wall can be built on the hole wall, the retaining wall is of a concrete structure, the effect of supporting and stabilizing the hole wall is achieved, and the construction safety is further guaranteed.
Aiming at the construction of the retaining wall, the traditional construction method is that after a hole is formed by adopting a manual excavation method, a formwork is erected and a steel bar is placed, the concrete is cast in place to form the retaining wall, each retaining wall needs to be constructed after the concrete is solidified, the construction of the next retaining wall is carried out, the center position, the diameter and the roundness of the formwork need to be corrected, the time required by the construction of the whole retaining wall is long, the construction progress is seriously influenced, and the construction efficiency is reduced. Meanwhile, when the cast-in-place concrete is built by the traditional retaining wall, the concrete of the lower section is poured from the feeding hole, the construction is inconvenient when the feeding hole is too small, and the hole digging is increased when the feeding hole is too large, so that the workload is increased and the construction cost is increased.
Therefore, people begin to use the prefabricated dado to carry out construction, and usually, after a plurality of prefabricated fragments are assembled into a complete dado, the next section of dado is constructed by repeated operation, so that the time for waiting concrete to solidify in the cast-in-place dado can be greatly saved. However, the prefabricated sub-pieces are usually made of concrete, so that the size and the mass are large, the labor is very great if the prefabricated sub-pieces are placed and assembled in a manual mode, the labor intensity is high, safety accidents are easy to occur, and particularly, the high-efficiency and accurate positioning and installation are difficult to realize for the retaining wall with large aperture and heavy mass.
Disclosure of Invention
The application provides a mounting device and a mounting method for a prefabricated retaining wall of an artificial digging pile, in order to mount the prefabricated retaining wall of the artificial digging pile more conveniently, quickly, efficiently and safely.
In a first aspect, the application provides an installation device for a prefabricated retaining wall of an artificial dug pile, which adopts the following technical scheme:
the mounting device for the prefabricated retaining wall of the manual hole digging pile comprises a rail, wherein a sliding plate capable of sliding along the length direction of the rail is arranged on the rail, and a first driving assembly for driving the sliding plate to reciprocate is arranged on the rail; the sliding plate is provided with a lifting plate with adjustable height, and the lifting plate is provided with a tray capable of rotating circumferentially.
In the operation of the manual hole digging pile, in order to solve the problems that the construction of the cast-in-place reinforced concrete retaining wall of the manual hole digging pile is slow and the support is unsafe, the reinforced concrete retaining wall of the prefabricated partition is hoisted into the operation hole to be assembled, and the back of the prefabricated partition is filled and compacted to be molded, so that the construction progress is accelerated, and the construction safety is ensured. After the hole is dug manually, install the installation device in this application in the operation hole, the track is from operation hole central point to put towards the position of pore wall preinstallation prefabrication burst, with prefabrication burst hoist and mount and place on the tray, move towards the position of preinstallation prefabrication burst through the sliding plate, through the elevating plate adjustment mounting height, through the circumference position of the meticulous adjustment prefabrication burst of rotation of tray, finally transfer the prefabrication burst to preset position, after the prefabrication burst is fixed, installation device in this application resets again. By adopting the technical scheme, the prefabricated sub-pieces can be rapidly moved in a narrow limited space, so that the labor is saved, and the construction speed is high; and through the adjustment of a plurality of directions, can take one's place accurately fast, construction quality is guaranteed, and the security is high.
Optionally, the rail includes a slide rail formed by arranging two i-beams side by side at intervals, a sliding groove is formed in the outer side surface of each i-beam along the length direction of the i-beam, and the sliding plate is horizontally arranged on the i-beam; two side edges of the sliding plate are provided with downward flanges which are positioned at the outer side of the I-beam, and the inner sides of the flanges are provided with limiting pieces which are inserted in the corresponding sliding grooves in a sliding manner; a plurality of supporting cross rods are fixedly arranged between the parallel I-shaped beams.
The cross section of the sliding chute can be T-shaped, and the cross section of the limiting piece is matched with that of the sliding chute and is also T-shaped; by adopting the technical scheme, the rail can be flatly paved on the bottom surface of the operation hole, and the whole structure is stable, reliable, safe and firm; the sliding plate moves on the rail through the limiting structure of the limiting part matched with the sliding groove, and the moving stability of the sliding plate can be guaranteed.
Optionally, a mounting plate is further fixedly arranged between the parallel i-beams near the end portion, the first driving assembly comprises a jack fixedly arranged on the mounting plate, the jack is arranged along the length direction of the track, and an output shaft of the jack is connected to a connecting block arranged at the end portion, the bottom portion or the upper side of the sliding plate.
By adopting the technical scheme, the jack can provide larger thrust as a rigid jacking piece with low cost, simple structure and mature technology, thereby smoothly pushing the sliding plate and the large-mass prefabricated section placed on the sliding plate to move.
Optionally, a second driving assembly capable of driving the lifting plate to move up and down is arranged between the sliding plate and the lifting plate; and a third driving component capable of driving the tray to rotate circumferentially is fixedly arranged on the lifting plate.
By adopting the technical scheme, the second driving component drives the lifting plate to move up and down, so that the upper and lower positions of the prefabricated fragments are adjusted; the driving assembly III drives the tray to rotate circumferentially, so that the left and right positions of the prefabricated fragments are adjusted; the device can be controlled by mechanical drive, so that labor is saved; in addition, the remote control operation can be carried out by matching with a sensor, a camera and remote wireless control equipment, so that the remote control operation is safer.
Optionally, the driving assembly two includes a linear hydraulic cylinder and at least one group of connecting arms, the linear hydraulic cylinder and the connecting arms are both located between the sliding plate and the lifting plate, the lower end of the connecting arm is hinged to the upper side surface of the sliding plate, the upper end of the connecting arm extends obliquely upwards, and the upper end of the connecting arm is hinged to the bottom of the lifting plate; the end part of the cylinder body of the linear hydraulic oil cylinder is hinged to the upper side face of the sliding plate, a piston rod of the linear hydraulic oil cylinder extends upwards in an inclined mode and is hinged to the bottom of the lifting plate, and the axis inclination direction of the linear hydraulic oil cylinder and the length direction of the connecting arm are arranged in a scissor-fork mode.
By adopting the technical scheme, the linear hydraulic oil cylinder pushes the lifting plate, the lifting plate can generate horizontal and vertical compound motion, the horizontal movement of the lifting plate can assist the jack to feed or withdraw along the operation hole, and the operation efficiency is improved; the vertical movement of the lifting plate is used for adjusting the height position of the prefabricated fragments; if the horizontal moving direction of the lifting plate is opposite to the direction needing to be fed, the lifting plate can be corrected by matching with the jack.
Optionally, two groups of connecting arms are arranged in the application, two connecting arms are arranged in each group, and four connecting arms are arranged in a rectangular array; the linear hydraulic oil cylinder is arranged between the two connecting arms in the same group.
Through adopting above-mentioned technical scheme, when sharp hydraulic cylinder promoted the lifter plate and removed, the atress was more balanced, removed more steadily, reduced the production and rocked or turn on one's side the phenomenon.
Optionally, a through hole penetrating through the upper side and the lower side of the lifting plate is formed in the middle of the lifting plate, the driving assembly III comprises a rotary hydraulic cylinder, the rotary hydraulic cylinder is vertically and fixedly arranged at the bottom of the lifting plate, and an output shaft of the rotary hydraulic cylinder is upwards arranged and penetrates through the through hole and fixedly connected with the bottom of the tray.
When the track is placed, the orientation of the track is determined in a visual inspection mode, certain errors can exist, the rotary hydraulic cylinder drives the tray to rotate by adopting the technical scheme, the left position and the right position of the prefabricated section are corrected, and therefore the prefabricated section is placed at a preset position. In the process, the orientation of the track is basically almost different, so that the rotating angle of the tray driven by the rotary hydraulic cylinder is not large, and the slight swinging angle generated by the prefabricated slicing can be corrected by tools such as crowbars.
Optionally, the tray is disc-shaped, an arc-shaped first barrier strip and an arc-shaped second barrier strip are respectively arranged on the upper surface of the tray close to the edge, the first barrier strip and the second barrier strip are arranged at intervals, and an arc-shaped clamping groove is formed between the first barrier strip and the second barrier strip; the first barrier strip is close to the center of the tray, the second barrier strip is close to the edge of the tray, and the height of the first barrier strip is larger than that of the second barrier strip.
By adopting the technical scheme, the specification size of the tray can be determined according to the size of the operation hole and the size of the prefabricated section, and the width of the arc-shaped clamping groove is slightly larger than the thickness of the prefabricated section. When the prefabricated slicing body is hoisted, the lower end of the prefabricated slicing body is clamped in the arc-shaped clamping groove, so that the prefabricated slicing body is prevented from being toppled over, and the stability and reliability of movement are improved. After the prefabricated sub-sheets are conveyed to the preset position and fixed, the lifting plate can be driven to move downwards for a distance through the driving assembly II, and therefore the tray can be conveniently withdrawn and reset.
In a second aspect, the installation method of the prefabricated retaining wall of the artificial dug pile adopts the following technical scheme:
a method for installing a prefabricated retaining wall of an artificial dug pile comprises the following steps:
s1: after the prefabricated partition of the reinforced concrete retaining wall reaches the construction strength, the prefabricated partition is conveyed to a construction site;
s2: and (3) manual hole digging construction: excavating central soil in the operation hole and hole wall soil and stones to be provided with the first prefabricated partition, wherein the bottom surface of the operation hole is lower than the position of the bottom surface of the operation hole after the prefabricated partition is arranged, and a fixing structure is arranged on the wall of the hole to be provided with the prefabricated partition;
s3: installing the installation device in the operation hole through hoisting equipment, wherein a track of the installation device is flatly laid on the bottom surface of the operation hole, and the track faces the position of the pre-installed prefabricated partition on the hole wall of the operation hole from the center of the operation hole; when the tray is at the initial position, the tray of the mounting device is arranged at the center of the operation hole or a position close to the center of the operation hole on the track;
s4: hoisting a first prefabricated fragment into the operation hole through hoisting equipment, and placing the first prefabricated fragment on a tray of the installation device, wherein the inner side surface of the prefabricated fragment faces to the central position of the tray, and the outer side surface of the prefabricated fragment faces to the position to be installed on the hole wall of the operation hole;
s5: driving a sliding plate of the installation device to move so as to drive the prefabricated section to feed towards the position to be installed on the hole wall of the operation hole, driving a lifting plate to move up and down so as to drive the prefabricated section to adjust the up-down position, driving a tray to rotate so as to drive the prefabricated section to adjust the left-right position until the prefabricated section is transferred to a preset position, and limiting and fixing the prefabricated section through a fixing structure;
s6: then digging out soil and stones on the hole wall of the position to be installed of the next prefabricated partition; after the installation position of the next prefabricated section is excavated and formed, the tray below the last installed prefabricated section descends first and then resets, and is separated from the installed prefabricated section;
s7, adjusting the orientation of the track to enable the track to face the position where the second prefabricated split piece is to be installed; repeating the step S4 and the step S5, replacing the first prefabricated segment with a second prefabricated segment, and installing the second prefabricated segment;
s8, excavating a hole wall soil stone at a position where the last prefabricated partition is to be installed, wherein the thickness of the installation position is at least larger than the sum of the thicknesses of the two prefabricated partitions, and forming a deep concave containing cavity on the hole wall; after the installation position of the last prefabricated partition is excavated and formed, the tray of the installation device is reset; then the last prefabricated section is transferred to an accommodating cavity at the rear side of the mounting position through a mounting device;
s9, excavating hole wall soil and stones at the position where the penultimate prefabricated partition is to be installed, after excavating and forming the installation position, resetting a tray of the installation device, and adjusting the orientation of the track to enable the track to face the position where the penultimate prefabricated partition is to be installed; repeating the step S4 and the step S5, replacing the first prefabricated segment with the penultimate prefabricated segment, and installing the penultimate prefabricated segment;
s10, resetting a tray of the mounting device, adjusting the orientation of the track to enable the track to face the position where the last prefabricated section is to be mounted, moving the tray of the mounting device to the bottom of the last prefabricated section, lifting the last prefabricated section to move towards the center of the operation hole, enabling the last prefabricated section to be pulled back to the front side of the mounting position, and connecting the last prefabricated section with other adjacent prefabricated sections through connecting steel sheets to form a section of complete protecting wall; and (5) turning to the installation construction of the prefabricated partition of the next section of the protective wall.
Each section of dado includes four curved prefabricated burst in this application, and four curved prefabricated burst can splice and enclose into the closed ring for replace the dado of pouring in situ at the operation hole pore wall. The prefabricated partition can be produced in advance in a factory and then is transported to a construction site, and a plurality of prefabricated partitions are directly placed into the operation hole to be spliced, so that the rapid construction of the in-hole dado construction is realized.
If each protective wall is formed by encircling five or more prefabricated sheets, the steps S6 and S7 are repeated before the step S8 and after the step S7; until the installation of the last-but-one prefabricated section is completed.
By adopting the technical scheme, the step-by-step installation of the heavy retaining wall is realized, mutual noninterference influence is realized, a complete and reliable integral retaining wall can be finally formed, the operation efficiency is high, and the safety and the reliability are realized.
Optionally, in step S9, after completing installation of a section of complete retaining wall, integral measurement is required, the prefabricated section with installation size deviation is adjusted by using the installation device, and after the measurement is qualified, all the prefabricated sections are fixed; and then the next section of the prefabricated partition of the protective wall is transferred to installation and construction.
Through adopting above-mentioned technical scheme, can guarantee the accurate reliability of every prefabricated burst installation of each section, reduce the mounting dimension error, improve its reliability and stability, carry out supplementary regulation through installation device moreover, more accurate reliable, and more laborsaving, safe high-efficient.
Optionally, the manual hole digging pile is constructed one section by one section from top to bottom, steps S2 to S13 in the installation method are suitable for installation construction from the prefabricated retaining wall of the second section of the manual hole digging pile to the prefabricated retaining wall of the last section of the manual hole digging pile, and after the step S1 and before the step S2, the installation of the retaining wall of the first section of the manual hole digging pile is further implemented according to the following method: measuring and positioning after a field is leveled, excavating a fore shaft ring beam and a first section of dado foundation trench, binding reinforcing steel bars, erecting a template, pouring the fore shaft ring beam and the first section of dado concrete, and dismantling the template after the template removal strength is achieved; and (4) installing and fixing a winch and a hanging bracket, and using after the acceptance is qualified.
Through adopting above-mentioned technical scheme, for subsequent operation preparation work of being done, hoist engine and gallows are used for hoist and mount installation device and prefabricated burst, build simply, with low costs, and area is little, and convenient to use is simple. The first section of protective wall is fixedly connected with the fore shaft ring beam in a cast-in-place mode, and the stability and reliability of the first section of protective wall are guaranteed.
Optionally, after all prefabricated sub-pieces of one section of the protective wall are installed and measured to be qualified, filling aggregate symmetrically from filling openings of the prefabricated sub-pieces, and tightly squeezing the four prefabricated sub-pieces to form the cylindrical protective wall; when the prefabricated protecting wall of the rear section is constructed and installed by adopting the installation method, the prefabricated fragments in the two adjacent sections of protecting walls are installed in a staggered mode, namely the last prefabricated fragment in the two adjacent sections of protecting walls is arranged in a staggered mode in the vertical direction, so that a structural staggered joint can be formed, and the situation that backfill filled in the containing cavity at the installation position of the last prefabricated fragment in the previous section of protecting wall sinks to cause collapse is prevented.
The hole radius of the operation hole = foundation pile radius R + retaining wall thickness B in this application. In the application, four prefabricated fragments are selected to form a prefabricated protective wall, and the four prefabricated fragments are respectively named as a prefabricated fragment L1, a prefabricated fragment L2, a prefabricated fragment L3 and a prefabricated fragment L4; the height of the four prefabricated fragments is 1m, the prefabricated fragments L1, the prefabricated fragments L2 and the prefabricated fragments L3 are identical in specification and size, and the arc length of the prefabricated fragment L4 is smaller than the arc lengths of the other three prefabricated fragments. The prefabricated sub-pieces L1, the prefabricated sub-pieces L2 and the prefabricated sub-pieces L3 adopt circular ring sections with the same specification, so that the prefabricated sub-pieces L1, the prefabricated sub-pieces L2 and the prefabricated sub-pieces L3 are convenient to manufacture and use, and users do not need to worry about mistaken use caused by incapability of distinguishing and selecting. The maximum width of the prefabricated fragments in the application is smaller than the diameter of the foundation pile, otherwise, the prefabricated fragments cannot be conveyed into an operation hole of the manual hole digging pile; the prefabricated fragments can not be too narrow, otherwise, too many prefabricated fragments are assembled complicatedly, and the precision deviation is increased in an accumulated mode. Therefore, each section of the protective wall is preferably four prefabricated sections in the application.
When the earthwork at the installation position of the prefabricated fragments is excavated, the excavation depth is larger than the height of the prefabricated fragments, so that the prefabricated fragments can be conveniently placed, and the hole wall can be conveniently measured and corrected; the four prefabricated sub-sheets are provided with fixing holes and filling ports; and (4) driving a fixed steel chisel into the mounting position of the prefabricated section corresponding to the fixing hole on the prefabricated section, and adjusting the penetration depth of the steel chisel to ensure that the exposed length of the steel chisel is just equal to the thickness of the prefabricated section.
After the prefabricated fragments are hoisted to the tray, limiting connecting steel sheets are also installed on the side edges of the prefabricated fragments, and the limiting connecting steel sheets are fixed by screwing nuts; after the prefabricated split sheet is moved to the hole wall, the prefabricated split sheet can be pried by using an auxiliary tool such as a crowbar and the like, so that the prefabricated split sheet is hung on the fixed steel chisel; and excavating, hoisting, installing and fixing the prefabricated split L2 by the same method.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the method, the cast-in-place manual hole digging pile retaining wall is changed into the prefabricated segmented prefabricated retaining wall assembled in the segmented and prefabricated manner, so that the defect that a large amount of time is spent on the cast-in-place retaining wall to wait for concrete solidification is overcome, and the construction progress is accelerated; and the prefabricated section adopts the factory to customize production, so that the cost can be reduced, the construction difficulty is reduced, and the construction quality is improved.
2. The installation device can rapidly move the prefabricated sub-pieces in a narrow limited space, so that labor is saved, and the construction speed is high; and through the adjustment of a plurality of directions, can take one's place accurately fast, construction quality is guaranteed, and the security is high.
3. According to the method, the retaining wall can be installed immediately after the working hole is excavated and formed, so that the risk of hole wall collapse is reduced, and the safety is improved; in addition, the remote control operation can be carried out by matching with a sensor, a camera and remote wireless control equipment, so that the safety is further improved.
Drawings
Fig. 1 is a schematic top view of a prefabricated wall of a manual dug pile.
Fig. 2 is a schematic perspective structure diagram of a single prefabricated segment in a prefabricated dado of the artificial dug pile.
Fig. 3 is a schematic perspective view of the mounting device of the present application.
Fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.
Fig. 5 is a schematic view of the installation structure of the tray in the present application.
In the figure, 1, track; 1a, an I-beam; 1a1, a chute; 2. a sliding plate; 2a, flanging; 2a1, a limiting member; 3. a first driving component; 31. a jack; 4. a lifting plate; 41. a through hole; 5. a tray; 51. a first barrier strip; 52. a second barrier strip; 53. an arc-shaped clamping groove; 6. a support rail; 7. mounting a plate; 8. a second driving component; 81. a linear hydraulic cylinder; 82. a connecting arm; 9. a third driving component; 91. rotating the hydraulic cylinder; 10. prefabricating and dividing the sheets; 10a, a filling opening; 10b, fixing holes; 10c, connecting holes; 11. limiting and connecting the steel sheets; 12. a steel chisel.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
Referring to fig. 1, each prefabricated retaining wall section targeted in the present embodiment includes four prefabricated segments 10, and the hole radius of the working hole = foundation pile radius R + retaining wall thickness B. The four prefabricated partition sheets 10 surround to form a cylinder shape, so that a prefabricated protective wall is formed, and the four prefabricated partition sheets 10 are named as a prefabricated partition sheet L1, a prefabricated partition sheet L2, a prefabricated partition sheet L3 and a prefabricated partition sheet L4 respectively; the height of the four prefabricated sub-pieces 10 is 1m, wherein the prefabricated sub-pieces L1, the prefabricated sub-pieces L2 and the prefabricated sub-pieces L3 are the same in specification and size, and the arc length of the prefabricated sub-pieces L4 is smaller than the arc lengths of the other three prefabricated sub-pieces. The prefabricated sub-pieces L1, the prefabricated sub-pieces L2 and the prefabricated sub-pieces L3 adopt circular ring sections with the same specification, so that the prefabricated sub-pieces L1, the prefabricated sub-pieces L2 and the prefabricated sub-pieces L3 are convenient to manufacture and use, and users do not need to worry about mistaken use caused by incapability of distinguishing and selecting. In the application, the maximum width of each prefabricated segment 10 is smaller than the diameter of the foundation pile, otherwise the prefabricated segments 10 cannot be conveyed into an operation hole of the manual hole digging pile; the prefabricated section 10 cannot be too narrow, otherwise, the number of the prefabricated sections 10 is too large, the assembly is complicated, and the accuracy deviation is increased in an accumulated manner. Thus, in the present application, each section of the retaining wall is preferably four pre-fabricated sections 10.
Referring to fig. 2, each preform sheet 10 is provided with a filling opening 10a, a plurality of fixing holes 10b and a plurality of connecting holes 10c. When the four sections of prefabricated sub-sheets 10 surround to form a section of cylindrical prefabricated protective wall; the adjacent prefabricated sub-pieces 10 are connected through a limiting connecting steel sheet 11, and the limiting connecting steel sheet 11 is fixedly connected to the prefabricated sub-pieces 10 through bolts screwed in the connecting holes 10c. The manual hole digging pile is characterized in that a protecting wall is arranged from the ground to the lower digging edge, when the lower part of the prefabricated section 10 is hollowed and the prefabricated section 10 of the next section is not arranged, the outer side of the prefabricated section 10 above is not densely filled, the friction force is smaller than the dead weight of the prefabricated section 10, and the prefabricated section 10 of the upper section can slide downwards. After the prefabricated sub-pieces 10 are installed in place, the fixing holes 10b in the prefabricated sub-pieces 10 are matched with the steel drill rods 12 which are pre-driven into the soil layer, the prefabricated sub-pieces 10 are hung on the steel drill rods 12, the prefabricated sub-pieces 10 are fixed, and the prefabricated sub-pieces 10 are prevented from sliding downwards.
Referring to fig. 2, the steel rod 12 can be made into a cross shape, flanges of the cross shape on the steel rod 12 are vertically arranged to increase a contact surface for limiting the prefabricated section 10, the depth of the steel rod 12 entering the soil is controlled to enable the exposed length of the steel rod 12 to be just equal to the wall thickness B of the prefabricated section 10, and after the prefabricated section 10 is hung on the steel rod 12, the head of the cross shape just serves as the rear movement of the backrest limiting prefabricated section 10.
After all the prefabricated sub-pieces 10 of each section are installed and positioned, sand and stone materials are filled from the filling opening 10a for compaction, and cement mortar or cement paste can be injected for reinforcing and filling. If the back of the retaining wall of the manual hole digging pile has large water seepage, cement mortar or cement paste is adopted for filling, compacting and water plugging. When the compaction effect of one filling opening 10a is limited, a filling opening 10a can be additionally arranged in the middle of the lower end of the prefabricated section 10, so that the upper and lower filling materials have a reinforcing effect.
As shown in fig. 3 and 4, the mounting device for the prefabricated retaining wall of the artificial dug pile comprises a rail 1, a sliding plate 2, a lifting plate 4 and a tray 5, wherein the sliding plate 2 is arranged on the rail 1 and can slide along the length direction of the rail 1, and a first driving assembly 3 for driving the sliding plate 2 to reciprocate is arranged on the rail 1; as shown in fig. 5, a second driving assembly 8 capable of driving the lifting plate 4 to move up and down is arranged between the sliding plate 2 and the lifting plate 4; and a third driving component 9 capable of driving the tray 5 to rotate circumferentially is fixedly arranged on the lifting plate 4.
Specifically, as shown in fig. 3 and 4, the rail 1 includes a slide rail formed by two i-beams 1a arranged side by side at intervals, a sliding groove 1a1 is formed in an outer side surface of each i-beam 1a along a length direction of the i-beam 1a, and a sliding plate 2 is horizontally arranged on each i-beam 1 a; two side edges of the sliding plate 2 are provided with downward flanges 2a, the flanges 2a are positioned on the outer side of the I-beam 1a, and the inner side of each flange 2a is provided with a limiting piece 2a1 which is inserted in the corresponding sliding chute 1a1 in a sliding manner; a plurality of supporting cross rods 6 are fixedly arranged between the parallel I-shaped beams 1 a; the cross section of the sliding chute 1a1 can be T-shaped, the cross section of the limiting piece 2a1 is matched with that of the sliding chute 1a1 and is also T-shaped, the track 1 can be paved on the bottom surface of the operation hole, and the whole structure is stable, reliable, safe and firm; the sliding plate 2 moves on the track 1 through a limiting structure formed by matching the limiting piece 2a1 and the sliding groove 1a1, and the moving stability of the sliding plate can be ensured.
As shown in fig. 3, a mounting plate 7 is further fixedly arranged between the parallel i-beams 1a near the end, the first driving assembly 3 comprises a jack 31 fixedly arranged on the mounting plate 7, the jack 31 is arranged along the length direction of the rail 1, and an output shaft of the jack 31 is connected to a connecting block arranged at the end, the bottom or the upper side of the sliding plate 2. The second driving assembly 8 comprises a linear hydraulic oil cylinder 81 and at least one group of connecting arms 82, the linear hydraulic oil cylinder 81 and the connecting arms 82 are both positioned between the sliding plate 2 and the lifting plate 4, the lower ends of the connecting arms 82 are hinged to the upper side face of the sliding plate 2, the upper ends of the connecting arms 82 extend upwards in an inclined mode, and the upper ends of the connecting arms 82 are hinged to the bottom of the lifting plate 4; the end part of the cylinder body of the linear hydraulic oil cylinder 81 is hinged on the upper side surface of the sliding plate 2, the piston rod of the linear hydraulic oil cylinder 81 extends upwards in an inclined way and is hinged at the bottom of the lifting plate 4, and the axis inclination direction of the linear hydraulic oil cylinder 81 and the length direction of the connecting arm 82 are arranged in a scissor-fork way; in the present application, two groups of connecting arms 82 are provided, and there are two connecting arms 82 in each group, and four connecting arms 82 are arranged in a rectangular array; a linear hydraulic ram 81 is positioned between two connecting arms 82 of the same set. Through-hole 41 that runs through both sides about lifter plate 4 is seted up at the middle part of lifter plate 4, and drive assembly three 9 includes rotary hydraulic cylinder 91, and rotary hydraulic cylinder 91 is vertical to be set firmly in the bottom of lifter plate 4, and rotary hydraulic cylinder 91's output shaft sets up and passes through-hole 41 and link firmly with the bottom of tray 5.
When the track 1 is placed, the orientation of the track 1 is determined in a visual inspection mode, certain errors exist, the rotary hydraulic cylinder 91 drives the tray 5 to rotate, the left and right positions of the prefabricated section 10 are corrected, and therefore the prefabricated section 10 is placed at a preset position. In the process, because the orientation of the track 1 is almost the same, the angle of the rotating hydraulic cylinder 91 driving the tray 5 to rotate is not very large, and the slight swing angle generated by the pre-manufactured slice 10 can be corrected by a crowbar or other tools.
As shown in fig. 4, the tray 5 is disc-shaped, the upper surface of the tray 5 near the edge is respectively provided with a first arc-shaped barrier strip 51 and a second arc-shaped barrier strip 52, the first barrier strip 51 and the second barrier strip 52 are arranged at intervals, and an arc-shaped slot 53 is formed between the first barrier strip 51 and the second barrier strip 52; the first barrier strip 51 is close to the center of the tray 5, the second barrier strip 52 is close to the edge of the tray 5, and the height of the first barrier strip 51 is greater than that of the second barrier strip 52. The specification and size of the tray 5 can be determined according to the size of the operation hole and the size of the prefabricated section 10, and the width of the arc-shaped clamping groove 53 is slightly larger than the thickness of the prefabricated section 10. When the prefabricated sub-sheet 10 is hoisted, the lower end of the prefabricated sub-sheet is clamped in the arc-shaped clamping groove 53, so that the prefabricated sub-sheet is prevented from falling, and the stability and the reliability of movement are improved. After the prefabricated sub-sheets 10 are sent to the preset position and fixed, the second driving assembly 8 can drive the lifting plate 4 to move downwards for a distance, so that the tray 5 can be conveniently withdrawn and reset.
The implementation principle is as follows: after the manual work is dug the hole, install the installation device in this application in the operation hole, track 1 is from operation hole central point puts the position of pre-installation prefabricated section 10 towards the pore wall, place prefabricated section 10 hoist and mount on tray 5, move towards the position of pre-installation prefabricated section 10 through sliding plate 2, adjust the mounting height through lifter plate 4, the circumferential position of prefabricated section 10 of meticulous adjustment through the rotation of tray 5, finally transfer prefabricated section 10 to preset position, after prefabricated section 10 is fixed, installation device in this application resets again. The installation device can rapidly move the prefabricated sub-pieces 10 in a narrow limited space, labor is saved, and construction speed is high; and through the adjustment of a plurality of directions, can take one's place accurately fast, construction quality is guaranteed, and the security is high.
The embodiment also discloses an installation method of the prefabricated retaining wall of the manual hole digging pile, which comprises the following steps:
s1: after the prefabricated sub-pieces 10 of the reinforced concrete retaining wall reach the construction strength, the reinforced concrete retaining wall is conveyed to a construction site; implementing the installation of the first section of manual hole digging pile retaining wall: measuring and positioning after a field is leveled, excavating a fore shaft ring beam and a first section of dado foundation trench, binding reinforcing steel bars, erecting a template, pouring the fore shaft ring beam and the first section of dado concrete, and dismantling the template after the template removal strength is achieved; installing and fixing a winch and a hanging bracket, and using after the acceptance is qualified;
s2: the manual hole digging construction is carried out, and the second section and the retaining wall of other sections are sequentially installed from top to bottom: continuously excavating central soil in the operation hole downwards, correspondingly excavating soil and stones on the hole wall of the section of the protective wall to which the first prefabricated partition 10 is to be installed, wherein the bottom surface of the operation hole is lower than the position of the bottom surface of the prefabricated partition 10 after the prefabricated partition 10 is installed, and installing a fixing structure on the hole wall to which the prefabricated partition 10 is to be installed;
s3: installing the installation device in the operation hole through hoisting equipment, wherein a track 1 of the installation device is tiled on the bottom surface of the operation hole, and the track 1 faces the position of the pre-installed prefabricated partition 10 on the hole wall of the operation hole from the center of the operation hole; in the initial position, the tray 5 of the mounting device is arranged at the center of the operation hole or a position close to the center of the operation hole on the track 1;
s4: hoisting a first prefabricated section 10 into the operation hole through hoisting equipment, and placing the first prefabricated section on a tray 5 of an installation device, wherein the inner side surface of the prefabricated section 10 faces to the central position of the tray 5, and the outer side surface of the prefabricated section 10 faces to the position to be installed on the wall of the operation hole;
s5: the sliding plate 2 of the installation device is driven to move, so that the sliding plate drives the prefabricated section 10 to feed towards the position to be installed on the hole wall of the operation hole, the lifting plate 4 is driven to move up and down, the prefabricated section 10 is driven to adjust the up-and-down position, the tray 5 is driven to rotate, the prefabricated section 10 is driven to adjust the left-and-right position until the prefabricated section 10 is transferred to a preset position, and the prefabricated section 10 is limited and fixed through a fixing structure;
s6: then excavating the hole wall soil and stone at the position to be installed of the next prefabricated section 10; after the installation position of the next prefabricated section 10 is excavated and formed, the tray 5 below the last installed prefabricated section 10 descends first and then resets, and is separated from the installed prefabricated section 10;
s7, adjusting the orientation of the track 1 to enable the track to face the position where the second prefabricated section 10 is to be installed; repeating the steps S4 and S5, replacing the first prefabricated section 10 with a second prefabricated section 10, and installing the second prefabricated section 10;
s8, excavating hole wall earth and stones at the position to be installed of the last prefabricated partition 10, wherein the thickness of the installation position is at least larger than the sum of the thicknesses of the two prefabricated partitions 10, so that a deep concave containing cavity is formed on the hole wall; after the installation position of the last prefabricated section 10 is excavated and formed, the tray 5 of the installation device is reset; then the last pre-manufactured sub-slice 10 is transferred to an accommodating cavity at the rear side of the mounting position through a mounting device;
s9, excavating hole wall soil and stones at the position to be installed of the penultimate prefabricated partition 10, after excavating and forming the installation position, resetting a tray 5 of the installation device, and adjusting the orientation of the track 1 to enable the track to face the position to be installed of the penultimate prefabricated partition 10; repeating the steps S4 and S5, replacing the first prefabricated section 10 with the penultimate prefabricated section 10, and installing the penultimate prefabricated section 10;
s10, resetting the tray 5 of the mounting device, adjusting the orientation of the track 1 to enable the track to face the position to be mounted of the last prefabricated section 10, moving the tray 5 of the mounting device to the bottom of the last prefabricated section 10, supporting the last prefabricated section 10 to move towards the center of the operation hole, enabling the last prefabricated section 10 to be pulled back to the front side of the mounting position and connected with other adjacent prefabricated sections 10 through connecting steel sheets to form a complete protective wall; and turning to the installation construction of the next section of the protective wall prefabricated section 10.
In the embodiment, the diameter of a foundation pile is 1200mm as an example, four sections of prefabricated segments 10 surround to form a protective wall, the thickness of the prefabricated reinforced concrete protective wall is B =100mm, C30-strength cement concrete is adopted, and a structure is internally provided with HPB300 bidirectional reinforcing mesh sheets with the diameter of 10mm and the distance of 100 mm. The four prefabricated slices 10 are respectively a prefabricated slice L1, a prefabricated slice L2, a prefabricated slice L3 and a prefabricated slice L4, the prefabricated slice L1, the prefabricated slice L2 and the prefabricated slice L3 adopt arc rings with the same size, namely 100-degree central angle, the height is 1m, and the widest part is 1072mm; the prefabricated sub-piece L4 is an arc ring with a central angle, the height is 1m, and the widest position is 700mm.
Further, in step S9, after completing the installation of a complete retaining wall, the embodiment also needs to perform overall measurement, and adjusts the prefabricated segment 10 with installation size deviation by using an installation device, and fixes all the prefabricated segments 10 after the measurement is qualified; then, the next section of the retaining wall prefabricated sub-piece 10 is turned to installation construction; can guarantee the accurate reliability of every prefabricated section 10 installations like this, reduce the mounting dimension error, improve its reliable and stable nature, carry out supplementary regulation through installation device moreover, more accurate reliable, and more laborsaving, safe high efficiency. After all the prefabricated sub-sheets 10 of one section of the protective wall are installed and measured to be qualified, filling sand and stone materials symmetrically from the filling openings 10a of the prefabricated sub-sheets 10, and tightly extruding the four prefabricated sub-sheets 10 to form a cylindrical protective wall; when the prefabricated protecting wall of the rear section is constructed and installed by adopting the installation method, the prefabricated sections 10 in the two adjacent sections of protecting walls are installed in a staggered mode, namely the last prefabricated section 10 in the two adjacent sections of protecting walls is arranged in a staggered mode in the vertical direction, so that a structural staggered joint can be formed, and the situation that backfill filled in the containing cavity at the installation position of the last prefabricated section 10 in the previous section of protecting wall sinks to cause collapse is prevented.
When earthwork at the installation position of the prefabricated segment 10 is excavated, the excavation depth is larger than the height of the prefabricated segment 10, so that the prefabricated segment 10 can be conveniently placed, and the hole wall can be conveniently measured and corrected; the four prefabricated sub-sheets 10 are provided with fixing holes 10b, filling openings 10a and connecting holes 10c; and (3) driving a fixed steel chisel 12 into the mounting position of the prefabricated section 10 corresponding to the fixing hole 10b on the prefabricated section 10, and adjusting the penetration depth of the steel chisel 12 to ensure that the exposed length of the steel chisel is just equal to the thickness of the prefabricated section 10. After the prefabricated sub-pieces 10 are hoisted to the tray 5, limiting connecting steel pieces 11 are further installed on the side edges of the prefabricated sub-pieces, bolts are inserted into the connecting holes 10c, and the limiting connecting steel pieces 11 are fixed by screwing nuts matched with the bolts; after the prefabricated section 10 is moved to the hole wall, the prefabricated section 10 can be pried by using an auxiliary tool such as a crowbar, so that the prefabricated section 10 is hung on the fixed steel chisel 12.
The embodiments of the present disclosure are all preferred embodiments of the present disclosure, and the protection scope of the present disclosure is not limited thereby, wherein like parts are designated by like reference numerals. Therefore: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The mounting device for the prefabricated retaining wall of the artificial dug pile comprises a rail (1), and is characterized in that a sliding plate (2) capable of sliding along the length direction of the rail (1) is arranged on the rail (1), and a first driving assembly (3) for driving the sliding plate (2) to move in a reciprocating manner is arranged on the rail (1); the sliding plate (2) is provided with a lifting plate (4) with adjustable height, and the lifting plate (4) is provided with a tray (5) capable of rotating circumferentially; an arc-shaped first blocking strip (51) and an arc-shaped second blocking strip (52) are respectively arranged on the upper surface of the tray (5) close to the edge, the first blocking strip (51) and the second blocking strip (52) are arranged at intervals, and an arc-shaped clamping groove (53) is formed between the first blocking strip (51) and the second blocking strip (52); the first barrier strip (51) is close to the center of the tray (5), the second barrier strip (52) is close to the edge of the tray (5), and the height of the first barrier strip (51) is larger than that of the second barrier strip (52).
2. The mounting device for the prefabricated dado of the manual hole digging pile according to the claim 1, characterized in that the track (1) comprises a slide rail which is formed by arranging two I-shaped beams (1 a) at intervals side by side, a sliding groove (1 a 1) is arranged on the outer side surface of the I-shaped beam (1 a) along the length direction of the I-shaped beam, and the sliding plate (2) is horizontally arranged on the I-shaped beam (1 a); two side edges of the sliding plate (2) are provided with downward flanges (2 a), the flanges (2 a) are positioned on the outer side of the I-beam (1 a), and the inner side of each flange (2 a) is provided with a limiting piece (2 a 1) which is inserted in the corresponding sliding groove (1 a 1) in a sliding manner; a plurality of supporting cross rods (6) are fixedly arranged between the parallel I-shaped beams (1 a).
3. The mounting device for the prefabricated dado of the manual hole digging pile according to claim 2, characterized in that a mounting plate (7) is fixedly arranged between the parallel I-shaped beams (1 a) near the end, the first driving assembly (3) comprises a jack (31) fixedly arranged on the mounting plate (7), the jack (31) is arranged along the length direction of the track (1), and an output shaft of the jack (31) is connected to a connecting block arranged at the end or at the bottom or on the upper side of the sliding plate (2).
4. The mounting device for the prefabricated dado of the artificial dug pile as claimed in claim 1, 2 or 3, wherein a second driving assembly (8) capable of driving the lifting plate (4) to move up and down is arranged between the sliding plate (2) and the lifting plate (4); and a third driving component (9) capable of driving the tray (5) to rotate circumferentially is fixedly arranged on the lifting plate (4).
5. The mounting device for the prefabricated dado of the manual hole digging pile as claimed in claim 4, wherein the second driving assembly (8) comprises a linear hydraulic oil cylinder (81) and at least one group of connecting arms (82), the linear hydraulic oil cylinder (81) and the connecting arms (82) are both positioned between the sliding plate (2) and the lifting plate (4), the lower ends of the connecting arms (82) are hinged on the upper side surface of the sliding plate (2), the upper ends of the connecting arms (82) extend obliquely upwards, and the upper ends of the connecting arms (82) are hinged on the bottom of the lifting plate (4); the end part of the cylinder body of the linear hydraulic oil cylinder (81) is hinged to the upper side face of the sliding plate (2), the piston rod of the linear hydraulic oil cylinder (81) extends upwards in an inclined mode and is hinged to the bottom of the lifting plate (4), and the axis inclination direction of the linear hydraulic oil cylinder (81) and the length direction of the connecting arm (82) are arranged in a scissor-fork mode.
6. The mounting device for the prefabricated retaining wall of the manual hole digging pile according to claim 4, characterized in that a through hole (41) penetrating through the upper side and the lower side of the lifting plate (4) is formed in the middle of the lifting plate (4), the driving assembly III (9) comprises a rotary hydraulic cylinder (91), the rotary hydraulic cylinder (91) is vertically and fixedly arranged at the bottom of the lifting plate (4), and an output shaft of the rotary hydraulic cylinder (91) is arranged upwards and penetrates through the through hole (41) to be fixedly connected with the bottom of the tray (5).
7. The mounting method of the prefabricated retaining wall of the artificial dug pile is characterized by comprising the following steps of:
s1: after the prefabricated sub-pieces (10) of the reinforced concrete retaining wall reach the construction strength, the prefabricated sub-pieces are conveyed to a construction site;
s2: and (3) manual hole digging construction: excavating central soil in the operation hole and soil and stones on the hole wall on which the first prefabricated section (10) is to be installed, wherein the bottom surface of the operation hole is lower than the position of the bottom surface of the prefabricated section (10) after installation, and installing a fixing structure on the hole wall on which the prefabricated section (10) is to be installed;
s3: installing the installation device according to any one of claims 1 to 6 in the operation hole by using lifting equipment, wherein a rail (1) of the installation device is flatly laid on the bottom surface of the operation hole, and the rail (1) faces the position of a pre-installed prefabricated slicing piece (10) on the wall of the operation hole from the center of the operation hole; when in an initial position, the tray (5) of the mounting device is arranged at the center of the operation hole or a position close to the center of the operation hole on the track (1);
s4: hoisting and conveying a first prefabricated section (10) into the operation hole through hoisting equipment, and placing the first prefabricated section on a tray (5) of a mounting device, wherein the inner side surface of the prefabricated section (10) faces to the central position of the tray (5), and the outer side surface of the prefabricated section (10) faces to-be-mounted position of the hole wall of the operation hole;
s5: the sliding plate (2) of the installation device is driven to move, the sliding plate drives the prefabricated section (10) to feed towards the position to be installed on the hole wall of the operation hole, the lifting plate (4) is driven to move up and down, the prefabricated section (10) is driven to adjust the up-down position, the tray (5) is driven to rotate, the prefabricated section (10) is driven to adjust the left-right position until the prefabricated section (10) is transferred to a preset position, and the prefabricated section (10) is limited and fixed through the fixing structure;
s6: then digging hole wall earth and stones at the position to be installed of the next prefabricated section (10); after the installation position of the next prefabricated section (10) is excavated and formed, the tray (5) below the last installed prefabricated section (10) descends first and then resets, and is separated from the installed prefabricated section (10);
s7, adjusting the orientation of the track (1) to enable the track to face the position where the second prefabricated section (10) is to be installed; repeating the steps S4 and S5, replacing the first prefabricated section (10) with a second prefabricated section (10), and installing the second prefabricated section (10);
s8, excavating hole wall earth and stones at a position to be installed of the last prefabricated section (10), wherein the thickness of the installation position is at least larger than the sum of the thicknesses of the two prefabricated sections (10), so that a deep concave accommodating cavity is formed on the hole wall; after the installation position of the last prefabricated section (10) is excavated and formed, the tray (5) of the installation device is reset; then the last prefabricated section (10) is transferred into an accommodating cavity at the rear side of the mounting position through a mounting device;
s9, excavating hole wall earth and stones at the position to be installed of the penultimate prefabricated partition (10), resetting a tray (5) of the installation device after excavating and forming the installation position, and adjusting the orientation of the track (1) to enable the track to face the position to be installed of the penultimate prefabricated partition (10); repeating the steps S4 and S5, replacing the first prefabricated section (10) with the penultimate prefabricated section (10), and installing the penultimate prefabricated section (10);
s10, resetting a tray (5) of the mounting device, adjusting the orientation of a track (1) to enable the track to face the position to be mounted of the last prefabricated section (10), moving the tray (5) of the mounting device to the bottom of the last prefabricated section (10), and supporting the last prefabricated section (10) to move towards the center direction of the operation hole, so that the last prefabricated section (10) is pulled back to the front side of the mounting position and is connected with other adjacent prefabricated sections (10) through connecting steel sheets to form a complete protective wall; and (5) turning to the installation construction of the next section of the protective wall prefabricated section (10).
8. The method for installing the prefabricated retaining wall of the manual hole digging pile according to the claim 7, wherein in the step S9, after the installation of a section of complete retaining wall is completed, the whole measurement is needed, aiming at the prefabricated fragments (10) with installation size deviation, the installation device is used for adjusting, and after the measurement is qualified, all the prefabricated fragments (10) are fixed; and then the next section of the protective wall prefabricated section (10) is turned to for installation and construction.
9. The method for installing the prefabricated retaining wall of the artificial excavation pile as claimed in claim 7 or 8, wherein after the step S1 and before the step S2, the installation of the first section of the artificial excavation pile retaining wall is further performed according to the following method: measuring and positioning after a field is leveled, excavating a fore shaft ring beam and a first section of dado foundation trench, binding reinforcing steel bars, erecting a template, pouring the fore shaft ring beam and the first section of dado concrete, and dismantling the template after the template removal strength is achieved; installing and fixing a winch and a hanging bracket, and using the winch and the hanging bracket after acceptance inspection is qualified; in the step S9, after all the prefabricated sub-pieces (10) of one section of the protective wall are installed and qualified in measurement, sand and stone materials are symmetrically filled from the filling openings (10 a) of the prefabricated sub-pieces (10); the last prefabricated sub-sheet (10) in two adjacent sections of protective walls is staggered in the vertical direction.
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| CN202210577401.8A CN114837175B (en) | 2022-05-25 | 2022-05-25 | Mounting device and mounting method for prefabricated retaining wall of manual hole digging pile |
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| CN101634146B (en) * | 2008-07-24 | 2011-01-26 | 邢利奥 | Manually digging hole full-steel cylinder-wall protecting construction device for building pile foundation and construction method thereof |
| CN101665223B (en) * | 2009-09-21 | 2012-09-26 | 王敏奇 | Multi-functional elevator |
| CN206013724U (en) * | 2016-06-28 | 2017-03-15 | 中国第一汽车股份有限公司 | High speed self-loopa lifting trolley |
| CN107653884B (en) * | 2017-09-07 | 2020-07-07 | 浙江水利水电学院 | Steel casing setting device for drilling of sand foundation cast-in-place pile and construction method thereof |
| JP6640175B2 (en) * | 2017-11-16 | 2020-02-05 | 大和ハウス工業株式会社 | Construction method of excavated blade-mounted steel pipe and cast-in-place concrete pile for construction of cast-in-place concrete pile |
| CN108545676A (en) * | 2018-03-21 | 2018-09-18 | 张晓婷 | A kind of high-altitude operation vehicle for wind power plant electric power overhaul |
| CN208561570U (en) * | 2018-06-14 | 2019-03-01 | 中交二公局电务工程有限公司 | A kind of subway station internal rotation type hydraulic elevating platform |
| CN209384233U (en) * | 2018-09-30 | 2019-09-13 | 海南大学 | A kind of pile holes protecting wall device |
| CN113718780B (en) * | 2021-08-26 | 2022-08-26 | 翁程亮 | Automatic placer of bored concrete pile concrete placement template for municipal highway construction |
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