CN214118079U - CFG pile drilling machine structure under low-clearance environment of high-voltage line - Google Patents

Abstract

The utility model relates to a CFG pile drilling machine structure under high-voltage line low-clearance environment, which comprises a body and a drill rod arranged on the body, wherein the body comprises a base and a stand column, the upper end surface of the base is provided with a winch, the stand column is slidably connected with a clamping seat, the clamping seat is connected with a grouting pipe, a steel wire rope wound on the winch is fixed with a support bolt, the clamping seat is fixed with a motor, the drill rod comprises a main rod and an auxiliary rod, the grouting pipe is communicated with the inside of the auxiliary rod, and the lower end part of the main rod is arranged in a run-through manner; the auxiliary rod is inserted into the main rod, a spiral is convexly arranged on the outer peripheral surface of the upper end of the main rod, a locking assembly is fixed on the outer peripheral surface of the upper end of the main rod, jacks are concavely arranged on the outer peripheral surfaces of the upper end and the lower end of the auxiliary rod, and the locking assembly is fixedly inserted into the jacks of each group, so that the length of the drill rod is adjusted. The design of this application to the drilling rod has reached this rig and has had the operation demand under the strict limit for height requirement under the high-voltage line, reaches the pile-forming degree of depth requirement of CFG stake, makes the CFG stake under the high-voltage line carry out the construction smoothly.

Description

CFG pile drilling machine structure under low-clearance environment of high-voltage line

Technical Field

The application relates to the field of building construction equipment, in particular to a CFG pile drilling machine structure in a high-voltage line low-clearance environment.

Background

In recent years, with the continuous deep reformation, the national economic situation is great, and the railway and transportation industries are rapidly developed. In the current urban rail transit system, subways are a preferred construction mode due to the fact that the subways have large transport capacity, urban space resources are saved, and urban environmental pollution is low. At present, more than 10 cities such as wide and deep in north in China have built and are planning rail transit systems, a plurality of cities are planned or are planning, and a plurality of urban rail transit systems radiate from urban areas to suburbs and are connected with surrounding cities to form an intercity rail transit system. The subway vehicle section is used as a comprehensive production and office place such as the parking, the maintenance, the operation and the dispatching of subway line vehicles, is usually in urban land with the gold of earth and earth, and is characterized by large scale, large floor area and large demand of land.

Aiming at unfavorable geology such as miscellaneous filling soil, mucky soil, silty clay, sand layers, slightly weathered soil, middle weathered rock stratums and shallow solution (soil) holes in a field, through design and demonstration, a CFG pile is adopted to reinforce the foundation in a large area range, a high-pressure jet grouting pile is adopted in a local area, and a prestressed pipe pile is adopted to reinforce the foundation.

With respect to the related art in the above, the inventors consider that there are the following drawbacks: in the existing high-voltage line construction requirements, the minimum clear height between the high-voltage line and the ground is 17m, and meanwhile, when the CFG pile foundation construction mechanical equipment is used for pile forming operation of the high-voltage line, the maximum construction height of the construction machinery and the high-voltage line are ensured to be kept at a safe distance of no less than 5m, and the pile forming depth is more than 15 m, so that for the traditional drilling machine equipment, the height of a drilling machine is greater than the height limit requirement below the high-voltage line, the existing drilling machine is difficult to perform pile forming operation below the high-voltage line, and an improved space exists.

SUMMERY OF THE UTILITY MODEL

In order to enable the drilling machine to smoothly perform pile forming operation on the ground below the high-voltage line and meet the depth requirement of a pile body, the application provides a CFG pile drilling machine structure under the low-clearance environment of the high-voltage line.

The application provides a CFG stake rig structure adopts following technical scheme under high-voltage line low headroom environment:

a CFG pile drilling machine structure in a high-voltage line low-clearance environment comprises a body and a drilling rod mounted on the body, wherein the body comprises a base and a stand column vertically mounted on one side of the upper end face of the base, a winch is mounted on the upper end face of the base, two groups of fixed pulleys are rotatably connected to the upper end portion of the stand column, a clamping seat is slidably connected to the end face, deviating from the base, of the stand column, a grouting pipe is connected onto the clamping seat, a steel wire rope wound on the winch is fixedly connected with the upper end face of the clamping seat through the rotation of the two groups of fixed pulleys in a bolting mode, a motor vertically extending downwards is fixedly arranged on the clamping seat, the drilling rod and an output shaft of the motor rotate coaxially, the drilling rod comprises a main rod and an auxiliary rod which are both in a circular tube shape, the grouting pipe is communicated with the inside of the auxiliary rod, and the lower end portion of the main rod is communicated with the lower end portion of the main rod; the auxiliary rod is inserted into the interior of the main rod, a spiral which is arranged in a surrounding mode is convexly arranged on the outer peripheral face of the main rod, a locking assembly is fixed on the outer peripheral face of the upper end portion of the main rod, jacks which are right opposite to the locking assembly are concavely arranged on the outer peripheral faces of the upper end portion and the lower end portion of the auxiliary rod, the locking assembly and the sets of the upper end portion and the lower end portion of the auxiliary rod are fixedly inserted into the jacks in a inserting mode, and the length of the drill rod is adjusted.

By adopting the technical scheme, when CFG pile forming operation is carried out on the ground below the high-voltage line, a constructor drives the drilling machine to reach a specified position, at the moment, the auxiliary rod in the drilling rod is inserted into the main rod, the main rod and the auxiliary rod are inserted and fixed with the groups of insertion holes in the upper end part of the auxiliary rod through the groups of locking assemblies in the upper end part of the main rod, when pile forming operation is carried out, the winch rotates to enable the clamping seat in the lower end part of the steel wire rope to slide downwards along the upright post, the motor and the auxiliary rod rotate coaxially, the spiral on the outer peripheral surface of the main rod continuously drills underground, when the clamping seat moves to the lower end part of the upright post along the upright post, the drilling machine is stopped, the groups of locking assemblies are pulled out from the inner parts of the groups of insertion holes, the winch is controlled to rotate reversely, the steel wire rope pulls the clamping seat to move upwards, the auxiliary rod is pulled out from the inner part of the main rod, and pipe pulling of the auxiliary rod is realized; when the cassette moves to the upper end of the stand column, a constructor reinserts each group of locking components into each group of jacks at the lower end of the auxiliary rod, the main rod is inserted into the auxiliary rod in an inserting mode, the length of a drill rod for completing pipe drawing and positioning is doubled, the constructor restarts the drilling machine, the drill rod is made to continuously drill into the ground, the length of the drill rod at the moment reaches the depth requirement of a CFG (cement fly ash gravel) pile, during pipe drawing, concrete mortar is continuously pumped into the grouting port, and the locking components are gradually switched from the jacks at the lower end to the jacks at the upper end, so that construction of the CFG pile is completed. For current large-size rig, the whole height dimension of this rig has realized half reduction, through the grafting cooperation of mobile jib and auxiliary rod in the drilling rod, has realized the adjustment to the whole length of drilling rod, has reached the operation demand that this rig has under the strict limit for height requirement under the high-voltage line to the design of drilling rod in this application, reaches the pile-forming degree of depth requirement of CFG stake, makes the CFG stake under the high-voltage line can be under construction smoothly.

Preferably, the locking component comprises a plurality of groups of spring-type bolts, a plurality of groups of wall holes are formed in the outer peripheral face of the upper end of the main rod in a penetrating mode, the wall holes of the groups are distributed on the axis of the main rod in an equiangular and circumferential mode, the bolts and the wall holes of the groups are fixedly connected in an inserting mode, and the bolts and the jacks on the auxiliary rods are fixedly connected in an inserting mode.

Through adopting above-mentioned technical scheme, locking Assembly includes that a plurality of groups are the bolt of spring, each group's bolt is pegged graft and is fixed in each group wall hole inside of mobile jib upper end, each group's bolt is just right with each group jack of auxiliary rod upper end and lower tip, when carrying out the fixed connection of mobile jib and auxiliary rod, peg graft each group bolt to the jack is inside, it is fixed to make to be connected between mobile jib and the auxiliary rod, and then realize the adjustment of drilling rod length, this bolt is under the effect of built-in spring, the response of spring to the inside grafting process of jack is comparatively rapid, the bolt is difficult for taking place to take off the round pin after inserting each group jack, make this drilling rod comparatively stable when becoming a stake.

Preferably, the outer peripheral surface of the auxiliary rod is convexly provided with a plurality of groups of ribs, the inner peripheral surface of the main rod is concavely provided with chutes matched with the groups of ribs in shape, the extending direction of the ribs is parallel to the axis of the auxiliary rod, and the ribs of each group are inserted into the chutes which are arranged just opposite to the grooves to slide.

By adopting the technical scheme, the groups of ribs convexly arranged on the outer peripheral surface of the auxiliary rod are inserted and slide with the groups of sliding grooves concavely arranged on the inner peripheral surface of the main rod, the connection relationship between the main rod and the auxiliary rod is improved by the arrangement, when the auxiliary rod is driven by the motor to rotate, the auxiliary rod is inserted and connected with the main rod, the main rod and the auxiliary rod are synchronously rotated by the arrangement, the main rod and the auxiliary rod are not easy to rotate relatively, the torsion borne by each group of locking assemblies is reduced, and the efficiency of the drill rod during pile forming is guaranteed.

Preferably, the up end of base reaches install the hydraulic stem between the stand, the lower tip of stand with the up end of base is articulated, the up end of base is fixed with and is used for supporting the support of stand, the concave notch structure that is equipped with stand joint complex of upper end of support.

Through adopting above-mentioned technical scheme, the up end of the lower tip base of stand is articulated, the both ends of hydraulic stem are articulated with the up end of base and the vertical terminal surface of stand respectively, the support to this stand has been realized to setting up of hydraulic stem, when this rig in the transportation, need fall this stand, the support to the stand is realized to setting up of support, the notch and the stand shape fit of support upper end, it is better to make the laminating nature between support and the stand, the stability of stand is higher.

Preferably, a lantern ring is fixed on the end face of one side of the upright column, which is far away from the base, and the drill rod and the lantern ring are inserted and rotated.

Through adopting above-mentioned technical scheme, the lantern ring is fixed on the base, and when making the stake operation, the drilling rod rotates with the lantern ring grafting, and the setting of lantern ring plays the limiting displacement to the drilling rod, makes the lower tip of drilling rod difficult for appearing leading partially, has promoted the verticality of CFG stake.

Preferably, the four corners of the base are provided with vertically arranged hydraulic cylinders, and the lower end surfaces of the hydraulic cylinders in each group are abutted to the ground.

By adopting the technical scheme, when each group of hydraulic cylinders at four corners of the base perform pile forming operation, the lower end face of each group of hydraulic cylinders is abutted against the ground, so that the stability of the drilling machine on the ground is improved, the verticality of the drill rod is kept stable, the vibration of the CFG pile during pile forming is reduced, and the position precision during pile forming is improved.

Preferably, the reversing pulley is installed on the position, close to the stand column, of the upper end face of the base, a through hole is formed in the support in a penetrating mode, and the steel wire rope penetrates through the through hole and is connected with the reversing pulley in a winding mode.

By adopting the technical scheme, the reversing pulley is installed on the upper end face of the base, the steel wire rope penetrates through the support and bypasses the reversing pulley, and the steel wire rope is attached to the base and the stand column through the reversing pulley, so that the compactness of the drilling machine is improved.

Preferably, one side of the base, which is far away from the upright post, extends and is provided with a balancing weight.

Through adopting above-mentioned technical scheme, when the hydraulic stem promoted that the stand is vertical state and the rig carried the inside soil property of pile body, the base leaned to the right side of stand, and the focus of rig is unbalanced, and setting up of balancing weight is balanced the pile forming process, makes the focus of rig keep balance, makes this rig be difficult for taking place to empty, has promoted the holistic stability of rig.

Preferably, a base platform is installed below the base, the upper end of the base platform is in inserted connection with the lower end face of the base platform to rotate, and crawler wheels are rotatably connected to two sides of the base platform.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the CFG stake of high-tension line below is in the work progress, highly have strict requirement to the rig, through the improvement to drilling rod in the rig in this application, make the drilling rod constitute by the mobile jib and with mobile jib grafting fixed auxiliary rod, it is fixed to the grafting of each group's jack of auxiliary rod upper end and lower tip through each group's locking Assembly on the mobile jib, the adjustment to the whole length of drilling rod has been realized, the design to the drilling rod has reached the operation demand that this rig has under the strict limit for height requirement under the high-tension line in this application, the CFG stake that makes under the high-tension line can be under construction smoothly, reach the pile-forming degree of depth requirement of CFG stake simultaneously.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic view of the overall construction of the drill pipe of the present application;

FIG. 4 is an enlarged view at B in FIG. 3;

FIG. 5 is an enlarged view at C in FIG. 3;

FIG. 6 is a schematic view of the overall structure of the auxiliary rod when it is lifted from the main rod in the present application;

fig. 7 is an enlarged view at D in fig. 6.

Description of reference numerals: 1. a body; 11. a base; 111. a hydraulic lever; 112. a support; 1121. a port; 113. a hydraulic cylinder; 114. a diverting pulley; 12. a column; 121. a fixed pulley; 122. a collar; 13. a control room; 14. a connecting rod; 2. a drill stem; 21. a main rod; 211. spiraling; 212. a wall hole; 213. a chute; 22. an auxiliary rod; 221. a jack; 222. ribs; 3. a winch; 4. a card holder; 41. a grouting pipe; 42. a wire rope; 43. a motor; 5. a bolt; 6. a balancing weight; 7. a base station; 71. a crawler wheel; 8. ground, 81, pile mouth.

Detailed Description

The present application is described in further detail below with reference to figures 1-7.

Example 1:

the embodiment of the application discloses CFG stake rig structure under high-tension line low headroom environment. Referring to fig. 1, the drilling machine for the CFG pile on the ground of the high-voltage line comprises a body 1 and a drill rod 2 mounted on the body 1, wherein the body 1 comprises a rectangular base 11 and a stand column 12 mounted on one side of the upper end face of the base 11, and the lower end part of the stand column 12 is hinged with the upper end face of the base 11. The base 11 is continuously protruded from one side edge far away from the upright post 12, and a balancing weight 6 is fixed on the upper end surface. The hydraulic cylinders 113 which are vertically arranged are fixed at the four corners of the base 11, the lower end parts of the hydraulic cylinders 113 in each group are in a cone frustum-shaped structure, and the hydraulic cylinders 113 in each group are independently controlled; when the ground 8 of the construction site is uneven, the hydraulic cylinders 113 of the respective groups are driven so that the lower ends of the hydraulic cylinders 113 of the respective groups abut against the ground 8. The lower end surface of the base 11 is rotatably connected with a base 7, the base 7 is disc-shaped, the plane of the base 7 is parallel to the plane of the base 11, and the lower end of the base 7 is rotatably connected with two sets of crawler wheels 71 which are abutted against the ground surface 8.

The direction of the base 11 parallel to the moving direction of each group of crawler wheels 71 is the length direction, the upright post 12 is positioned on the middle vertical surface of the base 11 in the width direction, the upper end surface of the base 11 is provided with the winch 3, the winch 3 is positioned on the middle vertical surface of the base 11 in the width direction, and the steel wire rope 42 is wound on the winch 3; two groups of fixed pulleys 121 are rotatably connected to the upper end part of the upright post 12 far away from the base 11, and the axes of the two groups of fixed pulleys 121 are arranged in parallel; the end face of one side of the upright post 12, which is far away from the base 11, is slidably connected with a clamping seat 4, a motor 43 which axially extends vertically and downwards is installed on the clamping seat 4, and the drill rod 2 and an output shaft of the motor 43 rotate coaxially; the clamping seat 4 is connected with a grouting pipe 41 in a sealing mode on the end face of one side, which is far away from the stand column 12, and cement mortar conveyed by the grouting pipe 41 enters the hollow drill rod 2.

Referring to fig. 1 and 2, a reversing pulley 114 is fixed on the upper end surface of the base 11, the reversing pulley 114 is located on one side of the upright post 12 facing the hoist 3, the steel wire rope 42 wound around the hoist 3 is reversed by the reversing pulley 114, the steel wire rope 42 is attached to the upright post 12, the steel wire rope 42 wound around the reversing pulley 114 and the two sets of fixed pulleys 121 rotate around the fixed pulleys, and the steel wire rope 42 is fixed to the upper end of the clamping seat 4 in a bolting manner.

Two sets of hydraulic rods 111 which are obliquely arranged are arranged between the upper end face of the base 11 and the upright post 12, two ends of each set of hydraulic rods 111 are respectively hinged with the upper end face of the base 11 and one side end face of the upright post 12 facing the winch 3, and the hydraulic rods 111 support the upright post 12. Two groups of obliquely arranged connecting rods 14 are arranged between the upper end surface of the base 11 and the vertical end surface of the middle height of the upright post 12, the connecting rods 14 are rigid rods, and the upright post 12 which is vertically arranged is supported by the connecting rods 14. The connecting rod 14 is connected to the base 11 at a position close to the two sets of hydraulic cylinders 113 remote from the column 12.

A support 112 is fixed on the upper end surface of the base 11, the support 112 is positioned on the middle vertical surface of the base 11 in the width direction, a through hole 1121 is formed in the support 112 in a penetrating manner, and the steel wire rope 42 passes through the through hole 1121 and then rotates around a reversing pulley 114. The support 112 is positioned between the two groups of hydraulic rods 111, and the support 112 is positioned between the winch 3 and the upright post 12; the upper end face of the support 112 is concavely provided with a notch matched with the shape of the upright post 12, when the upright post 12 is inclined towards the horizontal direction, the upright post 12 is clamped into the notch at the upper end part of the support 112, and the support 112 supports the upright post 12. The total height of the drilling machine is 10.5m, and the requirement of safety distance under a high-voltage line is met.

Referring to fig. 3 and 4, the drill rod 2 includes a main rod 21 and an auxiliary rod 22, the main rod 21 and the auxiliary rod 22 are both hollow circular tubes, the auxiliary rod 22 is inserted into the main rod 21, and an upper end of the auxiliary rod 22 rotates coaxially with a lower end of an output shaft of the motor 43. The length of the main rod 21 is 8.5m, the wall thickness is 14mm, the length of the auxiliary rod 22 is 7m, the wall thickness is 12mm, and the length of the drill rod 2 reaches 15.5 m. A spiral 211 is integrally fixed to the outer peripheral surface of the main rod 21 around the axis thereof. A locking assembly is arranged on the drill rod 2 and comprises a plurality of groups of spring-type bolts 5, and jacks 221 which are opposite to the locking assembly are concavely arranged on the peripheral surfaces of the upper end part and the lower end part of the auxiliary rod 22; a plurality of groups of wall holes 212 are formed on the outer peripheral surface of the upper end of the main rod 21 in a penetrating manner, each group of wall holes 212 are distributed circumferentially at equal angles relative to the axis of the main rod 21, each group of bolts 5 is fixedly inserted into each group of wall holes 212, and each group of bolts 5 is fixedly inserted into the insertion hole 221 of the auxiliary rod 22.

Referring to fig. 3 and 5, the lower end of the main rod 21 has a truncated cone-shaped structure, and the lower end of the main rod 21 is communicated with the hollow structure inside; the outer peripheral surface of the secondary lever 22 is in clearance fit with the hollow inner peripheral surface of the primary lever 21. The axis of the hollow structure of the auxiliary rod 22 is arranged in line with the axis of the hollow structure of the main rod 21, and the hollow structure of the auxiliary rod 22 is opposite to the hollow structure of the lower end part of the main rod 21. The cement mortar conveyed inside the sub-pole 22 is conveyed through the main pole 21, and the cement mortar flows out from the lower end of the main pole 21.

Referring to fig. 6 and 7, a control chamber 13 for controlling the movement of the drilling machine is installed on the upper end surface of the base 11, and the control chamber 13 is located at one side of the chuck base 4. When the pile forming operation of the CFG pile on the ground 8 under the high-voltage line is carried out, the drilling machine continuously drills into the ground, so that a pile opening 81 extending vertically downwards is formed on the ground 8.

The outer peripheral surface of the auxiliary rod 22 is convexly provided with a plurality of groups of ribs 222, the inner peripheral surface of the main rod 21 is concavely provided with sliding grooves 213 which are matched with the groups of ribs 222 in shape, the extending direction of the ribs 222 is parallel to the axis of the auxiliary rod 22, and the groups of ribs 222 are inserted into the sliding grooves 213 which are arranged oppositely and slide. An integrally fixed lantern ring 122 is convexly arranged on one side edge of the base 11 close to the upright post 12, the pipe diameter of the lantern ring 122 is matched with the radial size of the upper spiral 211 of the main rod 21, and the main rod 21 is inserted into the lantern ring 122 and continuously rotates.

The implementation principle of CFG stake rig structure under high-voltage line low headroom environment of this application embodiment does:

when the ground 8 of the high-voltage line is used for piling CFG piles, strict height limit requirements are met under the high-voltage line, a CFG pile drilling machine under the low-clearance environment of the high-voltage line is improved in the application, a drill rod 2 of the drilling machine is composed of a main rod 21 and an auxiliary rod 22 which is fixedly connected with the main rod 21 in an inserted mode, when piling operation of all groups of CFG piles on the ground 8 is conducted, constructors control the drilling machine in a control room 13, the drilling machine is enabled to be continuously close to all calibrated positions, and all groups of hydraulic rods 111 and hydraulic cylinders 113 are installed in place.

At the moment, the auxiliary rod 22 on the drill rod 2 is inserted into the main rod 21, each group of inserted pins 5 at the upper end part of the main rod 21 is inserted and fixed with each group of insertion holes 221 at the upper end part of the auxiliary rod 22, the winch 3 rotates to enable the steel wire rope 42 to slide, the clamping seat 4 fixedly tied with the steel wire rope 42 continuously slides downwards along the upright post 12, the motor 43 is driven, the motor 43 continuously drives the drill rod 2 to rotate, and the drill rod 2 penetrates through the lantern ring 122 to enable the drill rod 2 to continuously drill underground; when the drill rod 2 is inserted into the ground until each group of the pins 5 is positioned at the upper end part of the lantern ring 122, stopping the drilling machine to adjust the length of the drill rod 2; at the moment, a constructor stands on the ground 8, pulls out each group of the pins 5 from the inner part of each group of the jacks 221, simultaneously drives the winch 3 to rotate reversely, so that the steel wire rope 42 pulls the clamping seat 4 to move upwards along the upright post 12, the auxiliary rod 22 is pulled out from the inner part of the main rod 21, and each group of the ribs 222 extends the sliding groove 213 to continuously slide; when the groups of the bolts 5 are aligned with the groups of the insertion holes 221 at the lower end part of the auxiliary rod 22, the constructor inserts the groups of the bolts 5 into the groups of the insertion holes 221 on the auxiliary rod 22, so that the main rod 21 and the auxiliary rod 22 are fixed, and the length of the drill rod 2 is doubled. And operating again by a constructor to ensure that the drilling machine continuously performs CFG pile forming operation, when the upper end part of the auxiliary rod 22 is positioned at the position of 8 on the ground, the depth of the CFG pile meets the requirement, pipe lifting operation and cement mortar pouring are required, the cement mortar selects C20 underwater concrete, and the slump is 180-220 mm during construction of the pump pressure mixture in the drill rod 2.

The grouting pipe 41 is connected with a pumping device on a cement tank car on the ground 8, when the drill rod 2 is lifted, the motor 43 and the winch 3 are both reversely rotated, so that the steel wire rope 42 pulls the clamping seat 4 to move upwards along the upright post 12, the lifting speed is preferably controlled to be 1.2-1.5 m/min, the bolt 5 is fixedly inserted into the insertion hole 221 at the lower end of the auxiliary rod 22, and when the upper end of the main rod 21 is lifted out of the ground 8, cement mortar is filled in a CFG pile space with the depth of the original main rod 21; the drilling machine is stopped, the constructor extracts all the groups of bolts 5 to drive the sample coiling machine to rotate, the auxiliary rod 22 is inserted into the main rod 21, the constructor inserts and fixes all the groups of bolts 5 into all the groups of insertion holes 221 at the upper end part of the auxiliary rod 22, the winch 3 and the motor 43 are driven again, the steel wire rope 42 pulls the clamping seat 4 to move upwards along the upright post 12, the drill rod 2 is completely lifted out of the pile opening 81, and meanwhile, cement mortar and the pipe lifting process are synchronous, so that the cement mortar is filled into the CFG pile.

Constructor constantly clears up the spoil of stake mouth 81, avoids drilling rod 2 to accomplish the back of extracting, and spoil drops to stake mouth 81 is inside. And after the concrete mortar in the pile opening 81 is dehydrated and hardened, detecting each group of CFG piles, wherein the CFG piles under the high-voltage line are positioned in a gravel bed area, the pile spacing is 1.5m, the design requirement of the bearing capacity characteristic value of a single pile is 300kN, the bearing capacity characteristic value of the composite foundation in the gravel bed area is not less than 150kPa, and the construction process of each group of CFG piles is completed. And driving the drilling machine to move to the position of the next mark, and repeating the process to complete the pile forming operation of the CFG pile. Compared with the existing large-size drilling machine, the whole height of the drilling machine is reduced in half, the whole length of the drilling rod 2 is adjusted through the insertion and connection matching of the main rod 21 and the auxiliary rod 22 in the drilling rod 2, the drilling machine has the operation requirement under the strict height limiting requirement under the high-voltage line due to the design of the drilling rod 2, the pile forming depth requirement of a CFG pile is met, and the CFG pile under the high-voltage line can be constructed smoothly.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a CFG stake rig structure under high-tension line low headroom environment, includes body (1) and installs drilling rod (2) on body (1), its characterized in that: the drill rod body (1) comprises a base (11) and an upright post (12) vertically installed on one side of the upper end face of the base (11), a winch (3) is installed on the upper end face of the base (11), two groups of fixed pulleys (121) are rotatably connected to the upper end portion of the upright post (12), a clamping seat (4) is slidably connected to one end face of the upright post (12) away from the base (11), a grouting pipe (41) is connected to the clamping seat (4), a steel wire rope (42) wound on the winch (3) is fixedly connected with the upper end face of the clamping seat (4) in a bolting mode through rotation of the two groups of fixed pulleys (121), a vertically and downwardly extending motor (43) is fixed to the clamping seat (4), the drill rod (2) coaxially rotates with an output shaft of the motor (43), and the drill rod (2) comprises a main rod (21) and an auxiliary rod (22) which are both in a circular tube shape, the grouting pipe (41) is communicated with the inside of the auxiliary rod (22), and the lower end part of the main rod (21) is arranged in a penetrating way; inserting auxiliary rod (22) inside main jib (21), the protruding spiral (211) that encircle the setting that is equipped with of outer peripheral face of main jib (21), be fixed with locking Assembly on the outer peripheral face of main jib (21) upper end, all concavely be equipped with on the outer peripheral face of auxiliary rod (22) upper end and lower tip with locking Assembly just right jack (221), locking Assembly and each group of auxiliary rod (22) upper end and lower tip jack (221) are pegged graft fixedly, make the length of drilling rod (2) is adjusted.

2. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: locking Assembly includes that a plurality of groups are bolt (5) of spring, link up on the outer peripheral face of mobile jib (21) upper end and seted up a plurality of groups wall hole (212), each group wall hole (212) about the equiangular circumference of axis of mobile jib (21) distributes, each group bolt (5) and each group wall hole (212) are pegged graft fixedly, each group bolt (5) with on vice pole (22) jack (221) are pegged graft fixedly.

3. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: the outer peripheral surface of the auxiliary rod (22) is convexly provided with a plurality of groups of ribs (222), the inner peripheral surface of the main rod (21) is concavely provided with sliding grooves (213) matched with the groups of ribs (222) in shape, the extending direction of the ribs (222) is parallel to the axis of the auxiliary rod (22), and the groups of ribs (222) are inserted into the sliding grooves (213) which are arranged oppositely to slide.

4. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: the up end of base (11) reaches install hydraulic stem (111) between stand (12), the lower tip of stand (12) with the up end of base (11) is articulated, the up end of base (11) is fixed with and is used for supporting support (112) of stand (12), the concave and be equipped with of upper end of support (112) with stand (12) joint complex notch structure.

5. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: a sleeve ring (122) is fixed on the end face of one side of the upright column (12) departing from the base (11), and the drill rod (2) and the sleeve ring (122) are connected in an inserting mode to rotate.

6. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: the four corners of the base (11) are provided with vertically arranged hydraulic cylinders (113), and the lower end faces of the hydraulic cylinders (113) of all the groups are abutted to the ground (8).

7. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 4, wherein: a reversing pulley (114) is mounted on the upper end face of the base (11) at a position close to the upright post (12), a through hole (1121) is formed in the support (112) in a penetrating mode, and the steel wire rope (42) penetrates through the through hole (1121) and is wound and connected with the reversing pulley (114).

8. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: one side of the base (11) far away from the upright post (12) extends and is provided with a balancing weight (6).

9. The CFG pile drilling machine structure in the low clearance environment of the high-voltage line as claimed in claim 1, wherein: base station (7) are installed to the below of base (11), the upper end of base station (7) with the lower terminal surface grafting of base (11) is rotated, the both sides of base station (7) are all rotated and are connected with athey wheel (71).

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