CN114526005A - Cement-soil pile construction equipment - Google Patents

Abstract

The invention discloses cement soil pile construction equipment, and aims to provide cement soil pile construction equipment which can reduce manual operation, reduce labor intensity and improve the construction efficiency of tunnel reinforcement. The high-pressure jet grouting pile driver comprises a high-pressure jet grouting pile driver, wherein the high-pressure jet grouting pile driver comprises a jet grouting drill rod, a frame, a support tower rod arranged on the frame, a first guide rail arranged on the support tower rod, a sliding seat sliding along the first guide rail, a sliding seat movement executing mechanism used for driving the sliding seat and a rotary power head arranged on the sliding seat, the jet grouting drill rod comprises a drill body and a drill rod tail part connected with the upper end of the drill body, and the drill body consists of a plurality of sections of connecting drill pipes which are sequentially connected; the high-pressure jet grouting pile driver is characterized by comprising a traveling vehicle, wherein the traveling vehicle is provided with a mounting platform, and the high-pressure jet grouting pile driver is mounted on the mounting platform through a frame; the automatic drill pipe mounting device comprises a drill pipe placing frame and a manipulator which are arranged on a mounting platform, wherein the drill pipe placing frame is used for placing a connecting drill pipe of a rotary spraying drill rod.

Description

Cement soil pile construction equipment

technical field

The invention relates to a cement-soil pile construction equipment, in particular to a cement-soil pile construction equipment for tunnel reinforcement.

Background technique

At present, after the construction of a tunnel (such as a subway tunnel) is completed, the entire tunnel or a certain section of the tunnel needs to be reinforced to improve the structural stability of the tunnel. The current tunnel reinforcement construction equipment generally uses a high-pressure rotary jetting pile machine for construction. Specifically, the high-pressure rotary jetting pile machine uses a rotary jetting drill pipe to drill holes, so that the rotary jetting drill rod can be drilled into a set depth, and then the rotary jetting drill rod is used for drilling. High-pressure jet grouting is performed to form high-pressure jetted piles in the soil layer below the tunnel to support the tunnel to reinforce the tunnel. Because the inner diameter of the tunnel is very limited, the length of the rotary jet drill pipe is much larger than the inner diameter of the tunnel. Therefore, the rotary jet drill pipe of the current high-pressure rotary jet pile machine is generally composed of several sections of drill pipes connected in sequence. After the jetting drill pipe is drilled into the specified depth, a section of drill pipe is installed, so that the rotary jetting drill pipe can be drilled into the set depth. Generally, manual installation is completely adopted. Specifically, the drill pipe is manually transported, and the drill pipe is manually installed on the rotary jet drill pipe. In this way, not only the labor intensity is high, but also the installation efficiency is low, which will affect the construction efficiency of tunnel reinforcement. Extend the construction period of tunnel reinforcement. In view of this, how to develop a cement-soil pile construction equipment for tunnel reinforcement construction to reduce manual operation, reduce labor intensity and improve construction efficiency is of great significance.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a cement-soil pile construction equipment that can reduce manual operation, reduce labor intensity, and improve the construction efficiency of tunnel reinforcement.

The technical scheme of the present invention is:

A cement-soil pile construction equipment, comprising:

High-pressure rotary jetting pile machine, the high-pressure rotary jetting pile machine comprises a rotary jetting drill rod, a frame, a support tower rod arranged on the frame, a first guide rail set on the support tower rod, a sliding seat sliding along the first guide rail, A sliding seat moving actuator for driving the sliding seat and a rotary power head arranged on the sliding seat, the rotary jet drill pipe includes a drill body and a drill pipe tail connected with the upper end of the drill body, and the drill body is sequentially connected by several sections. The drill pipe is connected with the drill pipe, the tail part of the drill pipe includes a tail drill pipe which is rotatably arranged on the sliding seat, and the rotating power head is used to drive the rotation of the tail drill pipe;

Walking car, there is an installation platform on the walking car, the high-pressure rotary spray pile machine is installed on the installation platform through the frame, and the walking car is a crawler-type walking car or a wheel-type walking car or a track walking car suitable for walking on the rails ;

Drill pipe automatic installation device, the drill pipe automatic installation device includes a drill pipe placement rack and a manipulator set on the installation platform, wherein the drill pipe placement rack is used to place the connecting drill pipe of the rotary jet drill pipe, and the manipulator is used to place the drill pipe placement rack. The connecting drill pipe is transported and installed on the rotary jet drill pipe of the high-pressure rotary jetting pile driver, or used to remove the connecting drill pipe on the rotary jetting drill rod of the high-pressure rotary jetting pile machine and place it on the drill pipe placing rack .

In the process of constructing the high-pressure rotary jetting pile of the cement-soil pile construction equipment of this scheme, the rotary jetting drill pipe of the high-pressure rotary jetting pile machine is in the process of drilling into the soil layer. The connecting drill pipe on the drill pipe placement rack is transported and installed on the rotary jet drill pipe of the high-pressure rotary jetting pile machine; In the process of moving back, after the rotary jet drill pipe moves back by a specified length, the connecting drill pipe on the rotary jet drill pipe of the high-pressure rotary jet pile machine is removed by the manipulator and placed on the drill pipe placement rack; During the construction of high-pressure jetting piles, there is no need for manual handling to install or remove the connecting drill pipe of the jetting drill pipe, so as to reduce manual operations, reduce labor intensity, and improve the construction efficiency of tunnel reinforcement.

Preferably, one end of the connecting drill pipe is provided with a polygonal plug hole, the other end of the connecting drill pipe is provided with a polygonal plug pipe, and the outer side of the connecting drill pipe is provided with a radial bolt hole communicating with the polygonal plug hole and The locking bolts matched with the radial bolt holes, in any two adjacent connecting drill pipes, one of the polygonal plug-in pipes connecting the drill pipes is inserted into the other polygonal plug-in holes connecting the drill pipes. The lower end of the drill pipe is also provided with a polygonal plug-in pipe for matching with the polygonal plug-in hole.

Preferably, the high-pressure rotary jetting machine also includes a centrifugal locking device, and radial mounting holes are provided on the outer surfaces of the polygonal plug pipes connecting the drill pipes and the polygonal plug pipes at the lower end of the tail drill pipe. Corresponding to the installation holes one by one, the centrifugal locking device includes a radial sliding sleeve arranged in the corresponding radial installation hole and a radial locking rod slidably arranged in the radial sliding sleeve, and the inner end of the radial sliding sleeve is closed , the inner end of the radial locking rod and the inner end of the radial sliding sleeve are connected by a tension spring, and the inner side wall of each polygonal insertion hole connecting the drill pipe is provided with an annular slot for matching with the radial locking rod .

When the polygonal plug-in pipe is inserted into the polygonal plug-in hole, the radial locking rod on the polygonal plug-in pipe faces the annular slot in the corresponding polygonal plug-in hole;

When the rotational speed of the rotary jet drill pipe exceeds the set value, the radial locking rod on the rotary jet drill rod will overcome the tension of the tension spring under the action of centrifugal force, slide outward along the radial sliding sleeve, and make the radial locking rod outside The ends are inserted into the corresponding annular slots.

In the prior art, after the rotary jet drill pipe is drilled into a specified depth, the sliding seat moving actuator drives the sliding seat, the rotary power head and the tail of the drill pipe to move up a set distance along the first guide rail, and then the operator moves the other The connecting drill pipe is installed on the rotary jet drill pipe, and then the sliding seat moves the actuator to drive the sliding seat, the rotary power head and the tail of the drill pipe to move down the set distance along the first guide rail, so that the polygonal plug tube at the lower end of the drill pipe at the tail is inserted into the connection. In the polygonal insertion hole at the upper end of the drill pipe; then, the operator connects the two adjacent connecting drill pipes by tightening the locking bolt; , or the tightening is not enough, or the thread of the locking bolt and the thread of the threaded hole matched with the locking bolt are damaged, or the locking bolt is loosened due to vibration, making the connection between the two adjacent drill pipes unreliable, As a result, when the sliding seat moving actuator drives the sliding seat and the rotary jet drill pipe to move up along the first guide rail, the connecting drill pipe that is connected somewhere in the rotary jet drill pipe drilled into the soil layer is disconnected, resulting in the high pressure The construction of the rotary jetting pile was faulty, and part of the rotary jetting drill pipe fell off in the soil layer. In order to solve the above problems, a centrifugal locking device is set up in this solution. Specifically,

During the construction of high-pressure jetting piles with the rotary jet drill pipe, the rotary jet drill rod is in a state of high-speed rotation. At this time, the radial locking rod will be inserted into the corresponding annular groove under the action of centrifugal force. Rotate, generally move back, so that in the process of constructing high-pressure jetting piles in the soil layer, even if the two locking bolts connecting the drill pipe are not locked, the two connecting drill pipes will be locked between the radial locking rod and the ring clamp. Under the cooperation of the groove, it will not be disengaged, so the above problems can be effectively solved. On the other hand, since the polygonal socket tube at the lower end of the tail drill pipe is also provided with a centrifugal locking device, during the construction of the high-pressure rotary jetting pile with the rotary jet drill pipe, the radial locking rod on the polygonal socket tube at the lower end of the tail drill pipe will be locked in Under the action of centrifugal force, it is inserted into the corresponding annular groove, so that the operator does not need to tighten the locking bolt on a connecting drill pipe adjacent to the tail drill pipe, and can save the need to tighten the locking bolt to connect the tail drill pipe and the tail drill pipe. The operation of connecting the drill pipe can further simplify the operation steps of manually tightening the locking bolts. After drilling into the set depth of the soil layer, during the process of the rotary jet drill pipe moving back, the operator only needs to connect the two adjacent connecting drill pipes by tightening the locking bolts, which can save the need for tightening and locking Bolts to connect the tail drill pipe with the operation of connecting the drill pipe.

Preferably, the radial sliding sleeve and the radial mounting hole are connected by screw threads. In this way, the installation and removal of the radial sliding sleeve is facilitated.

Preferably, the inner wall of the radial sliding sleeve is provided with a limiting chute extending along the axial direction of the radial sliding sleeve, and the outer side of the radial locking rod is provided with a sliding block matched with the limiting chute.

Preferably, the high-pressure rotary jetting machine also includes a tail drill pipe separation, anti-rotation and alignment device, and the sliding seat includes a first sliding seat that is slidably arranged on the first guide rail, and is arranged on the first sliding seat and is connected to the first guide rail. The parallel second guide rail, the upper limit block and the lower limit block of the slider arranged on the first slider, and the lower limit block of the slider are slidably arranged on the second guide rail and located between the upper limit block and the lower limit block of the slider. The second sliding seat, the sliding seat moving actuator is used to drive the first sliding seat to move along the first guide rail; the tail drill pipe separation anti-rotation aligning device includes a torsion spring, a fixed sleeve fixed at the lower part of the tail drill pipe , A number of axial locking grooves evenly distributed on the lower part of the outer side of the fixed sleeve, a locking sleeve sleeved on the lower part of the tail drill pipe, a connecting piece connecting the locking sleeve and the first sliding seat, a locking sleeve arranged on the inner wall of the locking sleeve A plate accommodating groove, a locking plate for cooperating with the axial locking groove, and a locking plate stopper arranged in the locking plate accommodating groove, the outer side of the fixing sleeve, the locking sleeve and the rotation axis of the tail drill pipe are the same The shaft is distributed, the axial locking groove extends along the direction of the rotation axis of the tail drill pipe, and the lower end of the axial locking groove communicates with the lower end surface of the fixing sleeve, the upper part of the locking plate is located in the locking plate accommodating groove, and the upper part of the locking plate The locking plate is set in the accommodating groove through the rotation of the shaft, and the locking plate stopper is located outside the locking plate. The torsion spring is used to drive the lower part of the locking plate to rotate around the shaft toward the axis of the locking sleeve; When it is on the lower limit block of the sliding seat, the locking sleeve is sleeved outside the fixing sleeve, the lower part of the locking plate is pressed against the upper part of the outer side surface of the fixing sleeve under the action of the torsion spring, and the locking plate is located above the accommodating groove of the locking plate; when the second sliding seat The fixing sleeve is above the locking sleeve when it touches the upper limit block of the sliding seat.

Preferably, the high-pressure pile jetting machine further comprises a rotating base which is rotatably arranged on the frame through a horizontal axis, and a rotating base rotating actuator for driving the rotating base to rotate, and the support tower rod is fixed on the rotating base. In this way, by adjusting the rotary jetting drill pipe to be in an inclined state, a right-inclined high-pressure rotary jetting pile can be constructed at the lower right of the tunnel and a left-inclined high-pressure rotary jetting pile can be constructed at the lower left of the tunnel, so that the right-inclined high-pressure rotary jetting pile and the left-inclined high-pressure rotary jetting pile can be constructed. Multi-angle reliable support and reinforcement for the tunnel, the tunnel reinforcement effect is good.

Preferably, the drill pipe placement rack includes a base frame arranged on the installation platform, a rotating support provided on the base frame through the rotation of a vertical shaft, and a rotary drive device for driving the rotating support to rotate around the vertical shaft, the rotating support There are a number of vertical insertion holes evenly distributed around the circumference of the vertical shaft, and the vertical insertion holes are used for inserting the connecting drill pipe of the rotary jet drill rod. In this way, the connecting drill pipe to be installed and the connecting drill pipe disassembled from the rotary jet drill pipe can be inserted into the vertical insertion hole, on the one hand, it is convenient to place the connecting drill pipe in the height space, and on the other hand, it is convenient for the manipulator. Grab the connecting drill pipe.

Preferably, the rotating bracket includes an upper mounting plate and a lower mounting plate, and the vertical insertion hole includes a polygonal insertion hole provided on the upper mounting plate and a lower limit hole provided on the lower mounting plate.

The beneficial effects of the invention are that manual operation can be reduced, labor intensity can be reduced, and the construction efficiency of tunnel reinforcement can be improved.

Description of drawings

FIG. 1 is a schematic structural diagram of a cement-soil pile construction equipment according to a specific embodiment of the present invention.

FIG. 2 is a partial enlarged view of A in FIG. 1 .

Fig. 3 is a partial structural schematic diagram of the rotary jet drill pipe according to the specific embodiment 1 of the present invention.

FIG. 4 is a schematic structural diagram of the drill pipe placement rack according to the first embodiment of the present invention.

FIG. 5 is a partial structural schematic diagram of the centrifugal locking device according to the second embodiment of the present invention.

FIG. 6 is a partial enlarged view of B in FIG. 5 .

FIG. 7 is a partial structural schematic diagram of the concrete soil-cement pile construction equipment according to the specific embodiment of the present invention, in which the second sliding seat is pressed against the lower limit block of the sliding seat.

FIG. 8 is a partial enlarged view of C in 7. FIG. .

FIG. 9 is another partial structural schematic diagram of the concrete soil-cement pile construction equipment according to the specific embodiment of the present invention, in which the second sliding seat is pressed against the upper limit block of the sliding seat.

In the picture:

walking cart 1;

High pressure rotary jet pile machine 2, rotary jet drill pipe 2.1, connecting drill pipe 2.11, polygon plug pipe 2.111, polygon plug hole 2.112, tail drill pipe 2.12, drill pipe head 2.13, drill bit 2.131, high pressure rotary jet hole 2.132, car Frame 2.2, support tower 2.3, rotating power head 2.4, rotating seat 2.5, sliding seat 2.6, first sliding seat 2.61, second guide rail 2.62, second sliding seat 2.63, upper sliding seat block 2.64, lower sliding seat limit block 2.65, rotating seat rotary actuator 2.7, first guide rail 2.8, centrifugal locking device 2.9, radial sliding sleeve 2.91, radial locking rod 2.92, tension spring 2.93, limit chute 2.94, slider 2.95;

manipulator 3;

Drill pipe placement rack 4, drill pipe placement rack 4.1, lower mounting plate 4.11, upper mounting plate 4.12, rotary drive device 4.2;

Tail drill pipe separation anti-rotation alignment device 5, fixed sleeve 5.1, locking sleeve 5.2, axial locking groove 5.3, locking plate accommodating groove 5.4, locking plate 5.5, shaft 5.6.

Detailed ways

In order to make the purposes, technical solutions and advantages of the embodiments of the technical solutions of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly explained and described below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and Not all examples. Based on the examples in the implementation manner, other examples obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are only used to explain the present solution, but cannot be construed as a limitation on the solution of the present invention.

These and other aspects of embodiments of the present invention will become apparent with reference to the following description and accompanying drawings. In these descriptions and drawings, some specific implementations of the embodiments of the invention are disclosed in detail to represent some ways of implementing the principles of the embodiments of the invention, but it should be understood that the scope of the embodiments of the invention is not limited thereby limit. On the contrary, embodiments of the present invention include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

In the description of the present invention, it should be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined, the meaning of "several" means one or more.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

Specific embodiment 1: As shown in Figure 1, Figure 2, Figure 3, Figure 4, a cement-soil pile construction equipment includes a traveling vehicle 1, a high-pressure rotary jet pile driver 2 and an automatic installation device for drilling pipes. There is an installation platform on the walking cart. The traveling vehicle is a crawler-type traveling vehicle, or a rubber-wheeled traveling vehicle, or a rail traveling vehicle suitable for walking on the rails. In this embodiment, the traveling vehicle is a rail traveling vehicle suitable for walking on the railway track.

The high-pressure rotary jetting pile machine 2 includes a rotary jetting drill rod 2.1, a frame 2.2, a support tower rod 2.3 arranged on the frame, a first guide rail 2.8 arranged on the support tower rod, a sliding seat 2.6 sliding along the first guide rail, A sliding seat moving actuator for driving the sliding seat and a rotary power head 2.4 arranged on the sliding seat. The sliding seat mobile actuator is an oil cylinder or an electric cylinder or a linear slide rail or other mobile actuators arranged on the support tower rod. In this embodiment, the moving actuator of the sliding seat is a chain transmission mechanism arranged on the support tower rod, and the sliding seat is connected with the chain of the chain transmission mechanism. The high-pressure rotary spray pile machine is installed on the installation platform through the frame. The rotary jet drill pipe includes a drill body and a drill pipe tail connected with the upper end of the drill pipe. The drill body consists of several connecting drill pipes 2.11 connected in sequence. The tail of the drill pipe includes a tail drill pipe 2.12 rotatably arranged on the sliding seat. The rotary power head is used to drive the rear drill pipe to rotate. In this embodiment, the rotary power head includes a drive motor for driving the tail drill pipe.

The upper end of the connecting drill pipe 2.11 is provided with a polygonal insert hole 2.112, and the lower end of the connecting drill pipe is provided with a polygonal insert pipe 2.111. The outer surface of the connecting drill pipe is provided with radial bolt holes communicating with the polygonal insertion holes and locking bolts matched with the radial bolt holes. Among any two adjacent connecting drill pipes, one of the polygonal plug-in pipes connecting the drill pipes is inserted into the polygonal plug-in hole connecting the other drill pipes. The lower end of the tail drill pipe is also provided with a polygonal plug-in pipe 2.111 for matching with the polygonal plug-in hole.

The drill pipe automatic installation device includes a drill pipe placement rack 4 and a manipulator 3 set on the installation platform, wherein the drill pipe placement rack is used to place the connecting drill pipe of the rotary jet drill pipe, and the manipulator is used to place the connection drill on the drill pipe placement rack. The pipe is transported and installed on the rotary jet drill pipe of the high pressure rotary jet pile machine, or used to remove the connecting drill pipe on the rotary jet drill rod of the high pressure rotary jet pile machine and place it on the drill pipe placement rack.

In the process of constructing the high-pressure rotary jetting pile of the cement-soil pile construction equipment of this embodiment, the rotary jetting drill pipe of the high-pressure rotary jetting pile machine is in the process of drilling into the soil layer. The moving actuator drives the sliding seat, the rotary power head and the tail of the drill pipe to move up a set distance along the first guide rail, so that the polygonal plug-in pipe at the lower end of the drill pipe at the tail is separated from the polygonal plug-in hole connecting the upper end of the drill pipe; then, the manipulator is used for Transport and install a connecting drill pipe on the drill pipe placing rack to the rotary jet drill pipe of the high-pressure rotary jetting pile machine. Specifically, the manipulator grabs a connecting drill pipe on the drilling pipe placing rack, and then connects the The polygonal plug-in pipe at the lower end of the drill pipe is inserted into the polygonal plug-in hole connected with the drill pipe at the upper end of the rotary jet drill pipe; then, the sliding seat moving actuator drives the sliding seat, the rotary power head and the tail of the drill pipe along the first The guide rail moves down a set distance, so that the polygonal plug-in pipe at the lower end of the tail drill pipe is inserted into the polygonal plug-in hole connecting the upper end of the drill pipe. In order to realize that the manipulator is used to transport and install a connecting drill pipe on the drill pipe placing frame to the rotary jet drill pipe of the high-pressure rotary jet pile machine; then the operator connects the two adjacent connections by tightening the locking bolts Drill pipe.

Similarly, after the rotary jet drill pipe of the high-pressure rotary jet pile machine is drilled into the set depth of the soil layer, the rotary jet drill rod moves back (that is, moves up), and the rotary jet drill rod moves back by a specified length each time. After that, the connecting drill pipe on the rotary jet drill pipe of the high-pressure rotary jetting pile machine is removed by the manipulator and placed on the drill pipe placing rack; in this way, during the construction of the high-pressure rotary jetting pile, there is no need for manual handling to install or install the jetting pile. Disassemble the connecting drill pipe of the rotary jet drill pipe to reduce manual operation, reduce labor intensity, and improve the construction efficiency of tunnel reinforcement.

Specifically, as shown in FIG. 3 , the rotary jet drill pipe further includes a drill pipe head 2.13 arranged at the lower end of the drill body, and a drill head 2.131 is provided at the lower end of the drill pipe head. The inner hole connecting the drill pipe constitutes the grouting pipeline. The lower part of the side wall of the drill pipe head is provided with a high-pressure swirl hole 2.132, and the high-pressure swirl hole is communicated with the grouting pipeline. The tail of the drill pipe also includes a rotary joint which is rotatably connected to the upper end of the drill pipe at the tail, and the rotary joint is provided with a cement grouting port and an air injection port. The high-pressure jetting pile machine can directly use the drill pipe device for drilling, so as to drive the high-pressure jetting hole at the head of the drill pipe to drill into the set depth; then directly use the drill pipe device for high-pressure jet grouting to form high-pressure jetting piles , so that the two processes of lead hole and high pressure jet grouting in the MJS method are combined into one, so as to realize the integrated operation of lead hole and high pressure jet grouting, and improve the construction efficiency.

Further, as shown in Fig. 1 and Fig. 4, the drill pipe placing frame 4 includes a base frame arranged on the installation platform, a rotating support 4.1 arranged on the base frame by rotating a vertical shaft, and driving the rotating support around the vertical shaft. Rotary drive 4.2 for rod rotation. The rotating support is provided with a plurality of vertical insertion holes evenly distributed around the circumference of the vertical shaft, and the vertical insertion holes are used for inserting the connecting drill pipe of the rotary jet drill rod. The rotating support frame includes an upper installation plate 4.12, a lower installation plate 4.11 and a connecting piece connecting the upper installation plate and the lower installation plate. The vertical insertion hole includes a polygonal insertion hole arranged on the upper installation plate and a lower limit hole arranged on the lower installation plate. In this way, the connecting drill pipe to be installed and the connecting drill pipe disassembled from the rotary jet drill pipe can be inserted into the vertical insertion hole, on the one hand, it is convenient to place the connecting drill pipe in the height space, and on the other hand, it is convenient for the manipulator. Grab the connecting drill pipe.

Further, as shown in Figures 1 and 2, the high-pressure pile jetting machine also includes a rotating base 2.5 arranged on the frame through a horizontal axis to rotate, and a rotating base rotating actuator 2.7 for driving the rotating base to rotate. The horizontal axis is parallel to the front-rear direction of the frame. In this embodiment, the rotary actuator of the rotary seat is an oil cylinder, one end of the oil cylinder is hinged on the frame, and the other end of the oil cylinder is hinged on the rotary seat. The support tower rod is fixed on the rotating seat. In this way, by adjusting the rotary jetting drill pipe to be in an inclined state, a right-inclined high-pressure rotary jetting pile can be constructed at the lower right of the tunnel and a left-inclined high-pressure rotary jetting pile can be constructed at the lower left of the tunnel, so that the right-inclined high-pressure rotary jetting pile and the left-inclined high-pressure rotary jetting pile can be constructed. Multi-angle reliable support and reinforcement for the tunnel, the tunnel reinforcement effect is good.

Specific embodiment 2, the remaining structures of this embodiment refer to specific embodiment 1, and the difference lies in:

As shown in Fig. 5 and Fig. 6, the high-pressure spraying pile machine also includes a centrifugal locking device 2.9. Radial mounting holes are provided on the outer surfaces of each polygonal plug-in pipe 2.111 connecting the drill pipe and the polygonal plug-in pipe 2.111 at the lower end of the tail drill pipe. The radial mounting holes extend along the radial direction of the polygonal plug-in tube. The centrifugal locking devices correspond to the radial mounting holes one by one. The centrifugal locking device includes a radial sliding sleeve 2.91 arranged in the corresponding radial installation hole and a radial locking rod 2.92 slidably arranged in the radial sliding sleeve. The axis of the radial sliding sleeve extends in the radial direction of the polygonal plug-in tube. The outer end of the radial sliding sleeve is open, and the outer end of the radial sliding sleeve is located in the radial installation hole. The inner end of the radial sliding sleeve is closed, and the inner end of the radial locking rod and the inner end of the radial sliding sleeve are connected by a tension spring 2.93. In this embodiment, the inner end of the radial locking rod is provided with a tension spring accommodating hole, the tension spring is located in the tension spring accommodating hole, one end of the tension spring is connected to the inner end of the tension spring accommodating hole, and the other end of the tension spring is connected to the radial The inner end of the sliding sleeve is connected. The inner end of the radial locking rod abuts against the inner end surface of the radial sliding sleeve under the action of the tension spring. When the inner end of the radial locking rod abuts on the inner end surface of the radial sliding sleeve, the radial locking rod is completely located in the radial sliding sleeve. The inner side walls of the polygonal insertion holes connecting the drill pipes are provided with annular clamping grooves for cooperating with the radial locking rods.

When the polygonal plug-in pipe is inserted into the polygonal plug-in hole (after the polygonal plug-in pipe is inserted in the polygonal plug-in hole, it means that the lower end face of the connecting drill pipe where the polygonal plug-in pipe is located abuts against the connecting drill pipe where the polygonal plug-in hole is located. On the upper end face of the tube), the radial locking rod on the polygonal plug-in tube faces the annular groove in the corresponding polygonal plug-in hole. When the rotational speed of the rotary jet drill pipe exceeds the set value, the radial locking rod on the rotary jet drill rod will overcome the tension of the tension spring under the action of centrifugal force, slide outward along the radial sliding sleeve, and make the radial locking rod outside The ends are inserted into the corresponding annular slots.

In the prior art, after the rotary jet drill pipe is drilled into a specified depth, the sliding seat moving actuator drives the sliding seat, the rotary power head and the tail of the drill pipe to move up a set distance along the first guide rail, and then the operator moves the other The connecting drill pipe is installed on the rotary jet drill pipe, and then the sliding seat moves the actuator to drive the sliding seat, the rotary power head and the tail of the drill pipe to move down the set distance along the first guide rail, so that the polygonal plug tube at the lower end of the drill pipe at the tail is inserted into the connection. In the polygonal insertion hole at the upper end of the drill pipe; then, the operator connects the two adjacent connecting drill pipes by tightening the locking bolt; , or the tightening is not enough, or the thread of the locking bolt and the thread of the threaded hole matched with the locking bolt are damaged, or the locking bolt is loosened due to vibration, making the connection between the two adjacent drill pipes unreliable, As a result, when the sliding seat moving actuator drives the sliding seat and the rotary jet drill pipe to move up along the first guide rail, the connecting drill pipe that is connected somewhere in the rotary jet drill pipe drilled into the soil layer is disconnected, resulting in the high pressure The construction of the rotary jetting pile was faulty, and part of the rotary jetting drill pipe fell off in the soil layer. In order to solve the above problems, a centrifugal locking device is set up in this solution. Specifically,

During the construction of high-pressure jetting piles with the rotary jet drill pipe, the rotary jet drill rod is in a state of high-speed rotation. At this time, the radial locking rod will be inserted into the corresponding annular groove under the action of centrifugal force. Rotate, generally move back, so that in the process of constructing high-pressure jetting piles in the soil layer, even if the two locking bolts connecting the drill pipe are not locked, the two connecting drill pipes will be locked between the radial locking rod and the ring clamp. Under the cooperation of the groove, it will not be disengaged, so the above problems can be effectively solved. On the other hand, since the polygonal socket tube at the lower end of the tail drill pipe is also provided with a centrifugal locking device, during the construction of the high-pressure rotary jetting pile with the rotary jet drill pipe, the radial locking rod on the polygonal socket tube at the lower end of the tail drill pipe will be locked in Under the action of centrifugal force, it is inserted into the corresponding annular groove, so that the operator does not need to tighten the locking bolt on a connecting drill pipe adjacent to the tail drill pipe, and can save the need to tighten the locking bolt to connect the tail drill pipe and the tail drill pipe. The operation of connecting the drill pipe can further simplify the operation steps of manually tightening the locking bolts. After drilling into the set depth of the soil layer, during the process of the rotary jet drill pipe moving back, the operator only needs to connect the two adjacent connecting drill pipes by tightening the locking bolts, which can save the need for tightening and locking Bolts to connect the tail drill pipe with the operation of connecting the drill pipe.

In this embodiment, the radial sliding sleeve and the radial mounting hole are connected by screw threads. In this way, the installation and removal of the radial sliding sleeve is facilitated.

The inner wall of the radial sliding sleeve is provided with a limit chute 2.94 extending along the axial direction of the radial sliding sleeve, and the outer side of the radial locking rod is provided with a sliding block 2.95 matched with the limit chute. In this way, it is possible to prevent the radial locking rod from disengaging from the radial sliding sleeve.

Specific embodiment 3, the remaining structures of this embodiment refer to specific embodiment 1 or specific embodiment 2, and the difference is that:

As shown in Figures 7 and 8, the high-pressure rotary jetting pile driver also includes a rear drill pipe separation anti-rotation alignment device 5. The sliding seat 2.6 includes a first sliding seat 2.61 slidably arranged on the first guide rail, a second guide rail 2.62 arranged on the first sliding seat and parallel to the first guide rail, and a sliding seat upper limit set on the first sliding seat The block 2.64, the lower limit block 2.65 of the sliding seat and the second sliding seat 2.63 slidably arranged on the second guide rail and located between the upper limit block of the sliding seat and the lower limit block of the sliding seat. The sliding seat moving actuator is used for driving the first sliding seat to move along the first guide rail.

The tail drill pipe separation and anti-rotation alignment device 5 includes a torsion spring, a fixed sleeve 5.1 fixedly arranged at the lower part of the tail drill pipe, a number of axial locking grooves 5.3 evenly distributed in the circumferential direction at the lower part of the outer side of the fixed sleeve, and sleeved with the tail drill pipe The locking sleeve 5.2 on the lower part, the connecting piece connecting the locking sleeve and the first sliding seat, the locking plate accommodating groove 5.4 arranged on the inner wall of the locking sleeve, the locking plate 5.5 for cooperating with the axial locking groove, and the locking plate accommodating groove 5.5 arranged on the locking plate Locking plate stop in slot. The outer side surface of the fixed sleeve, the locking sleeve and the rotation axis of the tail drill pipe are coaxially distributed. The axial locking groove extends along the direction of the rotation axis of the tail drill pipe, and the lower end of the axial locking groove communicates with the lower end surface of the fixing sleeve. In this embodiment, the number of axial locking grooves is 10-30. The upper part of the locking plate is located in the locking plate accommodating groove, and the upper through-shaft rod 5.6 of the locking plate is rotated and arranged in the locking plate accommodating groove, and the locking plate stopper is located outside the locking plate. The torsion spring is used to drive the lower part of the locking plate to rotate around the shaft toward the axis of the locking sleeve.

As shown in FIG. 7 , when the second sliding seat is against the lower limit block of the sliding seat, the locking sleeve is sleeved outside the fixing sleeve, the lower part of the locking plate is pressed against the upper part of the outer side surface of the fixing sleeve under the action of the torsion spring, and the locking plate is located on the outer side of the fixing sleeve. Lock the top of the plate accommodating slot. In this embodiment, the side of the lower part of the locking plate facing the center of the locking sleeve is provided with balls. When the second sliding seat abuts on the lower limit block of the sliding seat, the locking sleeve is sleeved outside the fixing sleeve, and the balls on the lower part of the locking plate are on the torsion spring. Under the action, it abuts against the upper part of the outer side surface of the fixing sleeve, and the locking plate is located above the accommodating groove of the locking plate.

As shown in Figure 9, when the second sliding seat is against the upper limit block of the sliding seat, the fixing sleeve is located above the locking sleeve, the locking plate is pressed against the locking plate limiter under the action of the torsion spring, and the lower part of the locking plate extends into the inner hole of the locking sleeve.

In the process of constructing the high-pressure rotary jet pile machine, the operator's operation is often irregular or misoperation, which causes the polygonal socket at the lower end of the tail drill pipe to be unable to be inserted into the polygonal socket connecting the drill pipe. , which seriously affects the efficiency of construction operation. Specifically, in the process of drilling into the soil layer, the rotary jet drill pipe of the high-pressure rotary jet pile machine has not completely stopped rotating. The operator controls the sliding seat to move the actuator to drive the sliding movement. The base, the rotary power head and the tail of the drill pipe move up along the first guide rail, so that the tail plug-in tube at the lower end of the tail drill pipe is separated from the polygonal plug-in hole connecting the drill pipe; since the rotary jet drill pipe has not stopped rotating at this time, the After the tail plug pipe at the lower end of the tail drill pipe is separated from the polygon plug hole, the connecting drill pipe of the drill body of the rotary jet drill pipe will quickly stop rotating under the action of soil layer resistance, and the tail drill pipe will continue to maintain a certain rotation. In this way, it is easy to cause misalignment between the polygonal plug-in tube at the lower end of the tail drill pipe and the polygonal plug-in hole connecting the drill pipe (that is, the polygonal plug-in tube and the polygonal plug-in hole are not aligned). One of the connecting drill pipes is inserted, and the polygonal plug-in pipe at the lower end of the connecting drill pipe is inserted into the polygonal plug-in hole connecting the drill pipe at the upper end of the rotary jet drill pipe, and the sliding seat moves the actuator to drive the sliding seat, When the rotary power head and the tail of the drill pipe move down along the first guide rail, the polygonal plug-in pipe at the lower end of the tail drill pipe cannot be inserted due to the misalignment between the polygonal plug-in pipe at the lower end of the tail drill pipe and the polygonal plug-in hole connecting the drill pipe. Problems into polygonal spigot holes connecting drill pipes;

In order to solve the problem that the operator's irregular operation or misoperation often occurs in the process of constructing the high-pressure rotary jet pile by the high-pressure rotary jet pile machine, which causes the polygonal socket at the lower end of the tail drill pipe to be unable to be inserted into the polygonal socket connected to the drill pipe. In the hole, it seriously affects the efficiency of construction operation. In this embodiment, a tail drill pipe separation and anti-rotation alignment device is set. Specifically,

When the rotary jet drill pipe of the high-pressure rotary jet pile machine is drilling into the soil layer, the lower end face of the tail drill pipe abuts on the upper end face of the connecting drill pipe at the upper end of the rotary jet drill pipe, and the second sliding seat is against the upper limit of the sliding seat. The sliding seat moving actuator drives the second sliding seat and the rotary jet drill pipe to move down together through the sliding seat upper limit block of the first sliding seat, so that the rotary jet drill rod is drilled into the soil layer; After the rod is drilled into the specified depth, if the operator installs it and stipulates that after the rotary jet drill rod completely stops rotating, control the sliding seat moving actuator to drive the sliding seat, the rotary power head and the tail of the drill pipe to move up along the first guide rail, so that the tail drilling If the tail plug at the lower end of the pipe is separated from the polygonal plug hole connecting the drill pipe, the tail plug at the lower end of the tail pipe and the polygon plug hole connected to the drill pipe are kept aligned, which will not affect normal use;

If the rotary jet drill pipe has not completely stopped rotating, the operator controls the sliding seat to move the actuator to drive the sliding seat, the rotary power head and the tail of the drill pipe to move up along the first guide rail. During this process, the first sliding seat and locking The sleeve first moves up along the first guide rail until the lower limit block of the sliding seat abuts on the second sliding seat. During this process, the second sliding seat and the tail drill pipe are kept against the connecting drill pipe at the upper end of the rotary jet drill pipe under the action of their own weight. The upper end face of the lock plate does not move; while the locking sleeve moves up along the first guide rail, the locking sleeve will be sleeved outside the fixed sleeve from bottom to top, so that the lower part of the locking plate is pressed against the torsion spring under the action of the torsion spring. On the outer side of the fixed sleeve, since the tail drill pipe and the fixed sleeve are still rotating during this process, after the locking plate is aligned with one of the axial locking grooves, the lower part of the locking plate is clamped into the axial direction under the action of the torsion spring. into the locking groove, thereby locking the tail drill pipe and stopping the rotation of the rotary jet drill pipe; after that, the locking sleeve continues to move upward until the lower limit block of the sliding seat touches the second sliding seat; when the lower limit block of the sliding seat touches the second sliding seat When the sliding seat is on, the locking plate is separated from the locking plate accommodating groove and is located above the locking plate accommodating groove. After the lower limit block of the sliding seat rests on the second sliding seat, the sliding seat moving actuator drives the first sliding seat, the second sliding seat, the rotary power head and the tail of the drill pipe to move up synchronously along the first guide rail, so that the drill pipe at the end moves up synchronously. The tail plug at the lower end is separated from the polygonal plug hole connecting the drill pipe. During this process, since the rotary jet drill pipe has stopped rotating, the tail plug at the lower end of the tail drill pipe and the polygon plug hole connecting the drill pipe are kept aligned. , will not affect normal use.

On the other hand, after the rotary jet drill pipe of the high-pressure rotary jet pile machine is drilled into the set depth of the soil layer, during the process of the rotary jet drill rod moving back, the lower limit block of the sliding seat is pressed against the second sliding seat. The sliding seat moving actuator drives the first sliding seat, the second sliding seat, the rotary power head and the tail of the drill pipe to move up synchronously along the first guide rail, so as to realize the backward movement of the rotary jet drill pipe; When abutting on the second sliding seat, the locking plate is separated from the accommodating groove of the locking plate and is located above the accommodating groove of the locking plate. In this way, the rotation of the rotary jet drill pipe will not be affected, so it will not affect the high-pressure rotary jetting of the rotary jet drill rod construction. pile.

The above are only preferred embodiments of the present invention and do not limit the present invention. Any simple modifications, changes and equivalent transformations made to the above embodiments according to the technical essence of the present invention still belong to the technical solutions of the present invention. scope of protection.

Claims (10)

1. A cement-soil pile construction equipment, comprising: High-pressure rotary jetting pile machine, the high-pressure rotary jetting pile machine comprises a rotary jetting drill rod, a frame, a support tower rod arranged on the frame, a first guide rail set on the support tower rod, a sliding seat sliding along the first guide rail, A sliding seat moving actuator for driving the sliding seat and a rotary power head arranged on the sliding seat, the rotary jet drill pipe includes a drill body and a drill pipe tail connected with the upper end of the drill body, and the drill body is sequentially connected by several sections. It is composed of connecting drill pipes. The tail of the drill pipe includes a tail drill pipe which is rotatably arranged on the sliding seat. The rotary power head is used to drive the rotation of the tail drill pipe. It is characterized in that it also includes: Walking car, there is an installation platform on the walking car, the high-pressure rotary spray pile machine is installed on the installation platform through the frame, and the walking car is a crawler-type walking car or a wheel-type walking car or a track walking car suitable for walking on the rails ; Drill pipe automatic installation device, the drill pipe automatic installation device includes a drill pipe placement rack and a manipulator set on the installation platform, wherein the drill pipe placement rack is used to place the connecting drill pipe of the rotary jet drill pipe, and the manipulator is used to place the drill pipe placement rack. The connecting drill pipe is transported and installed on the rotary jet drill pipe of the high-pressure rotary jetting pile driver, or used to remove the connecting drill pipe on the rotary jetting drill rod of the high-pressure rotary jetting pile machine and place it on the drill pipe placing rack . 2. The cement-soil pile construction equipment according to claim 1, wherein one end of the connecting drill pipe is provided with a polygonal plug hole, the other end of the connecting drill pipe is provided with a polygonal plug pipe, and the outer end of the connecting drill pipe is provided with a polygonal plug-in pipe. There are radial bolt holes connected with the polygonal insertion holes and locking bolts matched with the radial bolt holes on the side. It is arranged in another polygonal plug hole connected to the drill pipe, and the lower end of the tail drill pipe is also provided with a polygonal plug pipe for matching with the polygonal plug hole. 3. The cement-soil pile construction equipment according to claim 2 is characterized in that, the high-pressure rotary jetting pile machine further comprises a centrifugal locking device, the polygonal plug-in pipe connecting the drill pipe and the polygonal plug-in pipe at the lower end of the tail drill pipe. There are radial mounting holes on the outer side of the nozzle, and the centrifugal locking device corresponds to the radial mounting holes one by one. The radial locking rod in the sleeve, the inner end of the radial sliding sleeve is closed, the inner end of the radial locking rod and the inner end of the radial sliding sleeve are connected by a tension spring, and each is connected to the polygonal insertion hole of the drill pipe The inner side walls of the radiator are provided with annular grooves for cooperating with the radial locking rods. 4 . The cement-soil pile construction equipment according to claim 3 , wherein when the polygonal plug-in pipe is inserted into the polygonal plug-in hole, the radial locking rod on the polygonal plug-in pipe faces the corresponding polygonal plug-in hole. 5 . inner ring slot; When the rotational speed of the rotary jet drill pipe exceeds the set value, the radial locking rod on the rotary jet drill rod will overcome the tension of the tension spring under the action of centrifugal force, slide outward along the radial sliding sleeve, and make the radial locking rod outside The ends are inserted into the corresponding annular slots. 5 . The cement-soil pile construction equipment according to claim 3 , wherein the radial sliding sleeve and the radial installation hole are connected by threads. 6 . 6 . The cement-soil pile construction equipment according to claim 3 , wherein the inner wall of the radial sliding sleeve is provided with a limit chute extending along the axial direction of the radial sliding sleeve, and the radial locking rod The outer surface is provided with a sliding block matched with the limit chute. 7 . The cement-soil pile construction equipment according to claim 2 , wherein the high-pressure rotary jetting pile driver further comprises a tail drill pipe separation, anti-rotation and alignment device, and the sliding seat comprises a first guide rail slidably arranged on the first guide rail. 8 . The first sliding seat, the second guide rail arranged on the first sliding seat and parallel to the first guide rail, the sliding seat upper limit block and the sliding seat lower limit block arranged on the first sliding seat, and the sliding seat are arranged on the second sliding seat. a second sliding seat on the guide rail and located between the upper limit block of the sliding seat and the lower limit block of the sliding seat, the sliding seat moving actuator is used to drive the first sliding seat to move along the first guide rail; The tail drill pipe separation and anti-rotation alignment device comprises a torsion spring, a fixed sleeve fixedly arranged at the lower part of the tail drill pipe, a plurality of axial locking grooves evenly distributed in the lower part of the outer side surface of the fixed sleeve in the circumferential direction, and sleeved on the lower part of the tail drill pipe. A locking sleeve, a connecting piece connecting the locking sleeve and the first sliding seat, a locking plate accommodating groove arranged on the inner wall of the locking sleeve, a locking plate for cooperating with the axial locking groove, and a locking plate arranged in the locking plate accommodating groove The plate limiter, the outer surface of the fixed sleeve, the locking sleeve and the rotation axis of the tail drill pipe are coaxially distributed, the axial locking groove extends along the direction of the rotation axis of the tail drill pipe, and the lower end of the axial locking groove The lower end face of the fixing sleeve is connected, the upper part of the locking plate is located in the locking plate accommodating groove, and the upper shaft rod of the locking plate is rotated to be arranged in the locking plate accommodating groove, the locking plate limiter is located outside the locking plate, and the torsion plate is located outside the locking plate. The spring is used to drive the lower part of the locking plate to rotate around the shaft toward the axis of the locking sleeve; When the second sliding seat abuts on the lower limit block of the sliding seat, the locking sleeve is sleeved outside the fixing sleeve, the lower part of the locking plate is pressed against the upper part of the outer side surface of the fixing sleeve under the action of the torsion spring, and the locking plate is located above the accommodating groove of the locking plate ; When the second sliding seat abuts on the upper limit block of the sliding seat, the fixing sleeve is located above the locking sleeve. 8 . The cement-soil pile construction equipment according to claim 1 , wherein the high-pressure rotary jetting pile driver further comprises a rotating seat arranged on the frame by a horizontal axis and a rotating seat for driving the rotating seat to rotate. 9 . Rotating the actuator, the support tower rod is fixed on the rotating seat. 9 . The cement-soil pile construction equipment according to claim 1 , wherein the drill pipe placing frame comprises a base frame arranged on the installation platform, a rotating bracket arranged on the base frame by rotating a vertical shaft, and the A rotary drive device that drives a rotating support to rotate around a vertical shaft, the rotating support is provided with a number of vertical insertion holes evenly distributed around the circumference of the vertical shaft, and the vertical insertion holes are used for inserting a rotary jet drill rod connection drill pipe. 10 . The cement-soil pile construction equipment according to claim 9 , wherein the rotating support comprises an upper installation plate and a lower installation plate, and the vertical insertion hole comprises a polygonal socket set on the upper installation plate. 11 . and the lower limit hole set on the lower mounting plate.

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