CN216894233U

CN216894233U - Multi-angle cement soil pile construction system in subway tunnel

Info

Publication number: CN216894233U
Application number: CN202122531659.8U
Authority: CN
Inventors: 李家正; 胡黎; 雷小峰; 吴克山; 况海龙
Original assignee: Zhejiang Datong Construction Technology Co ltd
Current assignee: Zhejiang Datong Construction Technology Co ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-07-05
Anticipated expiration: 2031-10-19

Abstract

The utility model discloses a multi-angle cement soil pile construction system in a subway tunnel, and aims to provide a multi-angle cement soil pile construction system in a subway tunnel, which can effectively improve the tunnel reinforcing construction efficiency, can support the tunnel in multiple angles and has a good tunnel reinforcing effect. The device comprises a walking vehicle, wherein a mounting platform is arranged on the walking vehicle; the pile machine set comprises two high-pressure jet grouting pile machines which are arranged on the mounting platform and used for constructing inclined piles, wherein a jet grouting drill rod of one high-pressure jet grouting pile machine used for constructing the inclined piles inclines towards the left side of the mounting platform; a rotary spraying drill rod of the other high-pressure rotary spraying pile machine for constructing the inclined pile inclines to the right side of the mounting platform; cement feeding device, cement feeding device are including setting up cement feed pump and the cement agitator on mounting platform, and the cement agitator is used for stirring cement, and the cement feed pump supplies the high pressure with the good cement of cement agitator stirring through the feed pipeline and spouts the stake machine soon.

Description

Multi-angle cement soil pile construction system in subway tunnel

Technical Field

The utility model relates to a subway tunnel cement-soil pile construction device, in particular to a multi-angle cement-soil pile construction system in a subway tunnel for tunnel reinforcement.

Background

At present, after a tunnel (such as a subway tunnel) is constructed, the whole tunnel or a certain section of tunnel needs to be reinforced so as to improve the structural stability of the tunnel; however, the existing tunnel reinforcing construction equipment and construction method are immature in technology, and the problems that the construction steps are complex, the construction efficiency is low, the reinforcing effect of the constructed tunnel reinforcing structure is poor and the like exist. In view of this, how to develop a tunnel reinforcing construction equipment to improve efficiency of construction and tunnel reinforcing effect is significant.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a multi-angle cement-soil pile construction system in a subway tunnel, which can effectively improve the tunnel reinforcing construction efficiency, can support the tunnel in multiple angles and has a good tunnel reinforcing effect.

The technical scheme of the utility model is as follows:

a multi-angle cement soil pile construction system in subway tunnel includes:

the walking vehicle can walk in the subway tunnel, and is provided with an installation platform;

the pile machine set comprises two high-pressure rotary jet grouting pile machines which are arranged on the mounting platform and used for constructing inclined piles, wherein a rotary jet grouting drill rod of one high-pressure rotary jet grouting pile machine used for constructing the inclined piles is inclined towards the left side of the mounting platform, and the inclination angle of the rotary jet grouting drill rod is 0-90 degrees; a rotary spraying drill rod of the other high-pressure rotary spraying pile machine for constructing the inclined pile inclines towards the right side of the mounting platform, and the inclination angle of the rotary spraying drill rod is 0-90 degrees; the rotary spraying drill rod comprises a drill body, and the drill body consists of a plurality of sections of connecting drill pipes which are sequentially connected;

cement feeding device, cement feeding device are including setting up cement feed pump and the cement agitator on mounting platform, and the cement agitator is used for stirring cement, and the cement feed pump passes through the cement supply high pressure that the feed pipeline stirred the cement agitator and spouts the stake machine soon.

The utility model provides a multi-angle soil cement pile construction system directly walks in subway tunnel through the walking car in the subway tunnel to spout the stake machine soon through two high pressures that are used for constructing the batter pile and construct the high pressure that the slope distributes in the below in tunnel simultaneously and spout the stake soon, it is specific, wherein spout the drilling rod soon and spout stake machine soon and construct the high pressure jet grouting pile that inclines of left side below in the tunnel at the left side below in tunnel with a high pressure, spout the drilling rod soon and spout stake machine soon and construct the high pressure jet grouting pile that inclines of right side below in the tunnel with a high pressure of right side slope of mounting platform, thereby spout stake and spout the stake soon with the high pressure jet grouting pile that inclines of left side and carry out reliable support and reinforcement of multi-angle to the tunnel through the high pressure jet grouting pile that inclines rightly and inclines left side, its tunnel reinforcement effect is good. On the other hand, spout stake machine soon with prior art's high pressure and can only construct a high pressure and spout the stake soon at every turn and compare, this scheme spouts the stake machine soon through two high pressures that are used for constructing the batter pile and is constructing the high pressure that two slopes distribute in the below in tunnel and spouts the stake soon, so can also effectively improve tunnel reinforcement efficiency of construction.

Preferably, the rotary jet drilling machine comprises a frame mounted on the mounting platform, 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 rotary jet drilling rod further comprises a drilling rod head arranged at the lower end of the drill body and a drilling rod tail arranged at the upper end of the drill body, the drilling rod tail comprises a tail drilling pipe rotatably arranged on the sliding seat, a rotary connector rotatably connected to the upper end of the tail drilling pipe and a cement grouting port arranged on the rotary connector, the rotary power head is used for driving the tail drilling pipe to rotate, a drill bit is arranged at the lower end of the drilling rod head, and a high-pressure rotary jet hole is arranged at the lower part of the side wall of the drilling rod head; the drilling pipe comprises a connecting drilling pipe body and is characterized in that one end of the connecting drilling pipe body is provided with a polygonal inserting hole, the other end of the connecting drilling pipe body is provided with a polygonal inserting pipe, the outer side face of the connecting drilling pipe body is provided with a radial bolt hole communicated with the polygonal inserting hole and a locking bolt matched with the radial bolt hole, any two adjacent connecting drilling pipes are provided with the polygonal inserting pipe, one polygonal inserting pipe connected with one drilling pipe is inserted into the polygonal inserting hole of the other connecting drilling pipe, and the lower end of the tail drilling pipe is also provided with a polygonal inserting pipe matched with the polygonal inserting hole. The drill bit is arranged at the bottom of the rotary spraying drill rod, so that the high-pressure rotary spraying pile machine can directly drill holes by using the rotary spraying drill rod, and the high-pressure rotary spraying holes are driven to drill into a set depth; and then, the rotary jet drill rod is directly utilized to carry out high-pressure jet grouting to form a high-pressure rotary jet pile, so that the two procedures of hole leading and high-pressure jet grouting in the MJS construction method are combined into one, the integrated operation of hole leading and high-pressure jet grouting is realized, and the construction efficiency is improved.

Preferably, the high-pressure jet grouting pile machine further comprises a centrifugal locking device, radial mounting holes are formed in the outer side surfaces of the polygonal insertion pipe connected with the lower end of the drill pipe and the polygonal insertion pipe at the lower end of the tail drill pipe, the centrifugal locking device corresponds to the radial mounting holes one by one, the centrifugal locking device comprises a radial sliding sleeve arranged in the corresponding radial mounting hole and a radial locking rod arranged in the radial sliding sleeve in a sliding manner, the inner end of the radial sliding sleeve is closed, the inner end of the radial locking rod is connected with the inner end of the radial sliding sleeve through a tension spring, and an annular clamping groove used for being matched with the radial locking rod is formed in the inner side wall of each polygonal insertion hole connected with the drill pipe;

after the polygonal inserting pipe is inserted into the polygonal inserting hole, the radial locking rod on the polygonal inserting pipe faces the annular clamping groove in the corresponding polygonal inserting hole; when the rotating speed of the rotary spraying drill rod exceeds a set value, the radial locking rod on the rotary spraying drill rod overcomes the tension of the tension spring under the action of centrifugal force, slides outwards along the radial sliding sleeve, and the outer end of the radial locking rod is inserted into the corresponding annular clamping groove.

In the prior art, after a rotary spraying drill rod is drilled into a specified depth, a sliding seat moving actuator drives a sliding seat, a rotary power head and the tail of the drill rod to move upwards for a set distance along a first guide rail, then an operator installs another connecting drill pipe on the rotary spraying drill rod, and then the sliding seat moving actuator drives the sliding seat, the rotary power head and the tail of the drill rod to move downwards for a set distance along the first guide rail, so that a polygonal inserting pipe at the lower end of a tail drill pipe is inserted into a polygonal inserting hole at the upper end of the connecting drill pipe; then, an operator connects two adjacent connecting drill pipes by screwing the locking bolt; however, in actual construction, the locking bolt is not screwed up due to the fact that an operator does not operate the locking bolt normally, or the screwing is insufficient, or the threads of the locking bolt and/or the threads of a threaded hole matched with the locking bolt are damaged, or the locking bolt is loosened due to vibration, so that the connection between two adjacent connecting drill pipes is not firm, and the connecting drill pipe connected with a certain position in the rotary spraying drill pipe drilled into the soil layer is separated in the process that the sliding seat moves the actuating mechanism to drive the sliding seat and the rotary spraying drill pipe to move upwards along the first guide rail, so that the construction fault of the high-pressure rotary spraying pile occurs, and a part of the rotary spraying drill pipe is separated from the soil layer. In order to solve the above problems, the present solution provides a centrifugal locking device, which, in particular,

at the in-process of spouting drilling rod construction high pressure jet grouting pile soon, spout the drilling rod soon and be in high-speed rotation state, at this moment, radial locking lever will insert in the ring groove that corresponds under the centrifugal force effect, so, spout the drilling rod soon and rotate on one side, generally move back to in-process of constructing the high pressure jet grouting pile in the soil layer, even if two locking bolts who connect the drill pipe appear not lock, these two connection drill pipes are under radial locking lever and ring groove's mating reaction, also can not throw off, therefore can effectively solve above-mentioned problem. On the other hand, because the polygonal insertion pipe at the lower end of the tail drill pipe is also provided with the centrifugal locking device, in the process of constructing the high-pressure jet grouting pile by the jet grouting drill pipe, the radial locking rod on the polygonal insertion pipe at the lower end of the tail drill pipe is inserted into the corresponding annular clamping groove under the action of centrifugal force, so that an operator does not need to screw the locking bolt on one connecting drill pipe adjacent to the tail drill pipe, the operation of connecting the tail drill pipe and the connecting drill pipe by screwing the locking bolt can be omitted, the operation step of manually screwing the locking bolt can be further simplified, the operator only needs to screw the locking bolt to connect two adjacent connecting drill pipes in the process of drilling the rotary jetting drill pipe of the high-pressure jet grouting pile machine into the soil layer and in the process of moving the rotary jetting drill pipe back after the rotary jetting drill pipe of the high-pressure jet grouting pile machine is drilled into the soil layer at the set depth, the operation of connecting the tail drill pipe and the connecting drill pipe by screwing the locking bolt can be omitted.

Preferably, the radial sliding sleeve is in threaded connection with the radial mounting hole. So, be convenient for radial sliding sleeve's installation and dismantlement.

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

Preferably, a drill pipe mounting device is further arranged on the mounting platform between the two high-pressure jet grouting pile machines for constructing the inclined piles, and comprises a drill pipe placing frame and a manipulator which are arranged on the mounting platform, wherein the drill pipe placing frame is used for placing a connecting drill pipe of a jet grouting drill rod, and the manipulator is used for carrying and installing the connecting drill pipe on the drill pipe placing frame on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the inclined piles, or is used for detaching the connecting drill pipe on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the inclined piles and placing the connecting drill pipe on the drill pipe placing frame. In the process of drilling the rotary jet drill rod of the high-pressure rotary jet pile machine into a soil layer, after the rotary jet drill rod is drilled into a specified depth, the connecting drill pipe on the drill pipe placing frame can be carried and installed on the rotary jet drill rod of the high-pressure rotary jet pile machine through a manipulator; after the rotary spraying drill rod of the high-pressure rotary spraying pile machine drills into a set depth of a soil layer, in the process that the rotary spraying drill rod moves back, after the rotary spraying drill rod moves back for a specified length, a connecting drill pipe on the rotary spraying drill rod of the high-pressure rotary spraying pile machine can be detached through a manipulator and placed on a drill pipe placing frame; so, at the in-process of construction high pressure jet grouting pile, need not artifical manual transport and install or dismantle the connection drill pipe of jet grouting drill pole to reduce manual operation, reduce intensity of labour, and improve the reinforced construction efficiency in tunnel.

Preferably, the drill pipe placing frame comprises a bottom frame arranged on the mounting platform, a rotating support arranged on the bottom frame in a rotating mode through a vertical shaft rod, and a rotary driving device for driving the rotating support to rotate around the vertical shaft rod, wherein a plurality of vertical inserting holes are uniformly distributed around the circumference of the vertical shaft rod and used for inserting rotary jet drill pipes.

Preferably, the high-pressure rotary jet grouting pile machine further comprises a tail drill pipe separation anti-rotation aligning device, the sliding seat comprises a first sliding seat arranged on the first guide rail in a sliding manner, a second guide rail arranged on the first sliding seat and parallel to the first guide rail, a sliding seat upper limiting block and a sliding seat lower limiting block arranged on the first sliding seat, and a second sliding seat arranged on the second guide rail in a sliding manner and located between the sliding seat upper limiting block and the sliding seat lower limiting block, and the sliding seat movement executing mechanism is used for driving the first sliding seat to move along the first guide rail; the tail drill pipe separation anti-rotation aligning 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 circumferentially and uniformly distributed at the lower part of the outer side surface 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 a first sliding seat, a locking plate accommodating groove arranged on the inner wall of the locking sleeve, a locking plate used for being matched with the axial locking grooves and a locking plate limiting piece arranged in the locking plate accommodating groove, wherein the outer side surface of the fixed sleeve, the locking sleeve and the rotating shaft of the tail drill pipe are coaxially distributed, the axial locking grooves extend along the rotating shaft direction of the tail drill pipe, the lower ends of the axial locking grooves are communicated with the lower end surface of the fixed sleeve, the upper part of the locking plate is positioned in the locking plate accommodating groove, a through shaft rod at the upper part of the locking plate rotates to be arranged in the locking plate accommodating groove, and the limiting piece is positioned at the outer side of the locking plate, the torsion spring is used for driving the lower part of the locking plate to rotate around the shaft rod to the axis direction of the locking sleeve; when the second sliding seat abuts against the lower limiting block of the sliding seat, the locking sleeve is sleeved outside the fixing sleeve, the lower part of the locking plate abuts 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 positioned above the locking plate accommodating groove; when the second sliding seat is abutted against the limiting block on the sliding seat, the fixing sleeve is positioned above the locking sleeve.

Preferably, the high-pressure jet grouting pile driver further comprises a rotating seat arranged on the frame in a rotating mode through a horizontal shaft and a rotating seat rotating executing mechanism used for driving the rotating seat to rotate, and the supporting tower rod is fixed on the rotating seat. Therefore, the construction requirements of the high-pressure jet grouting pile with different inclination angles can be met by adjusting the inclination angle of the jet grouting drill rod.

As preferred, the cement mixer is including last agitator, the blanking pipe that sets up in the bottom of last agitator, the first switch valve of setting on the blanking pipe, the grout bucket of being located the agitator below and set up the discharging pipe in grout bucket bottom including being used for stirring cement, the grout bucket is used for receiving by blanking pipe exhaust grout, the feed pipe is including the import of connecting cement feed pump and the feed input tube of discharging pipe, with cement feed pump exit linkage's feed output tube and a plurality of branch road pipeline, the high pressure jet grouting stake machine one-to-one of branch road pipeline and stake unit, the one end and the feed output tube connection of branch road pipeline, the other end and the high pressure jet grouting mouth of the high pressure jet grouting stake machine that corresponds of branch road pipeline are connected. According to the scheme, cement is stirred by the upper stirring barrel, the stirred cement paste is output to the cement paste storage barrel through the discharging pipe, and the cement paste in the cement paste storage barrel is supplied to the high-pressure rotary jet pile machine through the cement feeding pump and the feeding pipeline; so, can be through the continuous operation of last agitator, go up the every barrel cement that stirs of agitator, just can export the grout storage bucket through the unloading pipe with the grout that stirs in the last agitator as required to guarantee that the grout in the grout storage bucket can satisfy the needs of the continuous operation of high pressure jet pile machine soon.

Preferably, the pile unit still includes that a setting is used for constructing the high pressure jet grouting stake machine of vertical pile on mounting platform, and two high pressure jet grouting stake machines that are used for constructing the batter pile are located the same one side that is used for constructing the high pressure jet grouting stake machine of vertical pile, and the high pressure jet grouting stake machine's that is used for constructing the vertical pile jet grouting drilling rod is vertical distribution, and is equipped with vertical via hole on the mounting platform, and the high pressure jet grouting stake machine's that is used for constructing the vertical pile jet grouting drilling rod passes vertical via hole, the jet grouting drilling rod includes the drilling body, and the drilling body comprises the connection drill pipe that a plurality of sections connect gradually. So, can construct the vertical high pressure jet grouting stake of vertical distribution in the below construction of tunnel through the high pressure jet grouting stake machine that is used for constructing the vertical stake, it spouts stake cooperation with two high pressures jet grouting stake machines that are used for constructing the batter stake soon, construct the vertical high pressure jet grouting stake in the below of tunnel simultaneously and two high pressures jet grouting stake that the slope distributes and carry out the reliable support and the reinforcement of multi-angle to the tunnel, its tunnel reinforcement is effectual.

Preferably, a drill pipe mounting device is also arranged on the mounting platform on one side of the high-pressure jet grouting pile machine for constructing the vertical pile, and comprises a drill pipe placing frame and a manipulator which are arranged on the mounting platform, wherein the drill pipe placing frame is used for placing a connecting drill pipe of a jet grouting drill rod, and the manipulator is used for carrying and mounting the connecting drill pipe on the drill pipe placing frame on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the vertical pile, or is used for detaching the connecting drill pipe on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the vertical pile and placing the connecting drill pipe on the drill pipe placing frame.

The utility model has the beneficial effects that: not only can effectively improve tunnel reinforcement efficiency of construction, can carry out the support of multi-angle to the tunnel moreover, the tunnel is consolidated effectually.

Drawings

Fig. 1 is a schematic structural diagram of a multi-angle cement-soil pile construction system in a subway tunnel according to a first embodiment of the present invention.

Fig. 2 is a schematic partial structural view of a high-pressure jet grouting pile machine and a drill pipe installation device for constructing an inclined pile in the multi-angle cement-soil pile construction system in the subway tunnel according to the first embodiment of the present invention.

Fig. 3 is a partial view taken along direction a of fig. 1.

Fig. 4 is a partially enlarged view at B in fig. 2.

Fig. 5 is a partial structural schematic view of a rotary jetting drill pipe according to a first embodiment of the present invention.

Fig. 6 is a schematic diagram of a drill pipe placing rack according to a first embodiment of the present invention.

Fig. 7 is a partial structural view of a centrifugal locking device according to a third embodiment of the present invention.

Fig. 8 is a partial enlarged view at C in fig. 7.

Fig. 9 is a partial structural view of a multi-angle soil-cement pile construction system in a subway tunnel according to a fourth embodiment of the present invention, in which a second slide seat abuts against a lower stop block of the slide seat.

Fig. 10 is a partial enlarged view at D in fig. 9.

Fig. 11 is another partial structural view of a multi-angle soil-cement pile construction system in a subway tunnel according to an embodiment of the present invention, in which a second slide carriage abuts against a stopper on the slide carriage.

In the figure:

a traveling vehicle 1;

high-pressure jet grouting pile machine 2:

2.1 of a rotary spraying drill rod, 2.11 of a connecting drill pipe, 2.111 of a polygonal insertion pipe, 2.112 of a polygonal insertion hole, 2.12 of a tail drill pipe, 2.13 of the head of the drill rod, 2.131 of a drill bit, 2.132 of a high-pressure rotary spraying hole, 2.14 of a rotary connector and 2.15 of a cement grouting port;

a frame 2.2; a support tower rod 2.3; rotating the power head 2.4; 2.5 of a rotating seat;

a sliding seat 2.6, a first sliding seat 2.61, a second guide rail 2.62, a second sliding seat 2.63, a limiting block 2.64 on the sliding seat and a limiting block 2.65 under the sliding seat;

a rotary seat rotary actuator 2.7; a first guide rail 2.8;

the centrifugal locking device comprises a centrifugal locking device 2.9, a radial sliding sleeve 2.91, a radial locking rod 2.92, a tension spring 2.93, a limiting sliding groove 2.94 and a sliding block 2.95;

the cement mixing device comprises a cement supply device 3, a cement supply pump 3.1, a cement stirrer 3.2, an upper stirring barrel 3.21, a cement paste storage barrel 3.22, a feeding input pipe 3.3 and a feeding output pipe 3.4;

the drilling pipe placing frame 4, the drilling pipe placing frame 4.1, the lower installation flat plate 4.11, the upper installation flat plate 4.12 and the rotary driving device 4.2 are arranged in sequence;

a manipulator 4 a;

afterbody drill pipe separation prevents changeing and adjusts device 5, fixed cover 5.1, locking collar 5.2, axial locking groove 5.3, lockplate holding tank 5.4, lockplate 5.5, axostylus axostyle 5.6.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.

These and other aspects of embodiments of the utility model will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the utility model have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the utility model may be practiced, but it is understood that the scope of the embodiments of the utility model is not limited thereby. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.

In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The first embodiment is as follows: as shown in fig. 1, 2, 3, 4 and 5, a multi-angle cement-soil pile construction system in a subway tunnel includes a traveling vehicle 1, a pile set and a cement supply device 3. The walking vehicle can walk in the subway tunnel, and is provided with a mounting platform. The walking vehicle is a crawler-type walking vehicle, or a wheel-type walking vehicle, or a track walking vehicle suitable for walking on rails.

The pile unit comprises two high-pressure jet grouting pile machines 2 which are arranged on an installation platform and used for constructing inclined piles, wherein a jet grouting drill rod 2.1 of one high-pressure jet grouting pile machine used for constructing the inclined piles is inclined towards the left side of the installation platform, and the inclination angle of the jet grouting drill rod is 0-90 degrees, for example, the inclination angle of the jet grouting drill rod is 10 degrees, 20 degrees, 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees or 80 degrees; in the embodiment, the inclination angle of the rotary spraying drill rod is 60 degrees; the rotary jet drilling rod 2.1 of the other high-pressure rotary jet pile machine for constructing the inclined pile inclines to the right side of the mounting platform, and the inclination angle of the rotary jet drilling rod is 0-90 degrees, for example, the inclination angle of the rotary jet drilling rod is 10 degrees, or 20 degrees, or 30 degrees, or 40 degrees, or 50 degrees, or 60 degrees, or 70 degrees, or 80 degrees; in this embodiment, the inclination angle of the jet grouting drill rod is 60 degrees.

In this embodiment, two high-pressure jet grouting pile machines for constructing oblique piles are sequentially distributed along the front-rear direction of the traveling vehicle.

The high-pressure jet grouting pile driver 2 further comprises 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 movement executing mechanism used for driving the sliding seat and a rotary power head 2.4 arranged on the sliding seat. The sliding seat movement executing mechanism is an oil cylinder or an electric cylinder or a linear sliding rail or other movement executing mechanisms arranged on the supporting tower rod. The high-pressure jet grouting pile machine is installed on the installation platform through the frame.

The rotary spraying drill rod comprises a drill body, a drill rod head arranged at the lower end of the drill body and a drill rod tail arranged at the upper end of the drill body. The drill body consists of a plurality of sections of connecting drill pipes 2.11 which are connected in sequence. The drill rod tail comprises a tail drill pipe 2.12 rotatably arranged on the sliding seat, a rotary connector 2.14 rotatably connected to the upper end of the tail drill pipe and a cement grouting port 2.15 arranged on the rotary connector. The rotary power head 2.13 is used for driving the tail drill pipe to rotate. In this embodiment, the rotary power head includes a drive motor for driving the trailing drill pipe. The lower end of the drill rod head is provided with a drill bit 2.131. The inner hole of the connecting drill pipe forms a grouting pipeline. The lower part of the side wall of the drill rod head is provided with a high-pressure rotary jet hole 2.132 which is communicated with a grouting pipeline.

The upper end of the connecting drill pipe 2.11 is provided with a polygonal inserting hole 2.112, and the lower end of the connecting drill pipe is provided with a polygonal inserting pipe 2.111. And the outer side surface of the connecting drill pipe is provided with a radial bolt hole communicated with the polygonal inserting hole and a locking bolt matched with the radial bolt hole. And one polygonal inserting pipe of any two adjacent connecting drill pipes is inserted into the polygonal inserting hole of the other connecting drill pipe. The lower end of the tail drill pipe is also provided with a polygonal inserting pipe 2.111 which is used for being matched with the polygonal inserting hole. The drill rod head is fixed at the lower end of a connection drill pipe at the lowest end of the drill body.

The cement supply means 3 comprise a cement feed pump 3.1 and a cement mixer 3.2 arranged on the mounting platform. The cement mixer is used for mixing cement, and the cement feed pump supplies the cement mixed by the cement mixer to the high-pressure rotary jet pile machine through the feed pipeline.

The multi-angle cement soil pile construction system in the subway tunnel of the embodiment directly walks in the subway tunnel through the traveling vehicle, and every time the traveling vehicle walks for a set distance, high-pressure jet grouting piles which are obliquely distributed are constructed below the tunnel through two high-pressure jet grouting pile machines for constructing inclined piles, wherein a high-pressure jet grouting pile machine with a jet grouting drill rod inclined towards the left side of an installation platform constructs a left-inclined high-pressure jet grouting pile at the left lower side of the tunnel, and a high-pressure jet grouting pile machine with a jet grouting drill rod inclined towards the right side of the installation platform constructs a right-inclined high-pressure jet grouting pile at the right lower side of the tunnel, so that the tunnel is reliably supported and reinforced in multiple angles through the right-inclined high-pressure jet grouting pile and the left-inclined high-pressure jet grouting pile; so, can construct the high-pressure jet grouting stake of right bank and the high-pressure jet grouting stake of left bank along subway tunnel in proper order, its tunnel consolidates effectually. On the other hand, spout stake machine soon with prior art's high pressure and can only construct a high pressure and spout the stake soon at every turn and compare, this scheme spouts the stake machine soon through two high pressures that are used for constructing the batter pile and is constructing the high pressure that two slopes distribute in the below in tunnel and spouts the stake soon, so can also effectively improve tunnel reinforcement efficiency of construction.

Further, as shown in fig. 2 and 4, the high-pressure jet grouting pile driver further comprises a rotating base 2.5 which is rotatably arranged on the frame through a horizontal shaft and a rotating base rotation executing mechanism 2.7 for driving the rotating base to rotate. The horizontal axis is parallel to the front and back direction of the frame. In this embodiment, the rotating executing mechanism of the rotating seat is an oil cylinder, one end of the oil cylinder is hinged to the frame, and the other end of the oil cylinder is hinged to the rotating seat. The support tower pole is fixed on the rotating seat. So, can be through adjusting the inclination of spouting the drilling rod soon to the construction needs of the high pressure jet grouting pile of different inclination are adapted to.

Further, as shown in fig. 1 and 2, a drill pipe installation device is further arranged on an installation platform between the two high-pressure jet grouting pile machines for constructing the inclined piles. This drilling pipe installation device is including setting up drilling pipe rack 4 and manipulator 4a on mounting platform, and wherein the drilling pipe rack is used for placing the connection drilling pipe of spouting the drilling rod soon, and the manipulator is used for carrying the connection drilling pipe on the drilling pipe rack and installs on the high pressure spouts the drilling rod soon of the stake machine that is used for constructing the batter pile, perhaps is used for dismantling the connection drilling pipe on the high pressure spouts the drilling rod soon of the stake machine soon that is used for constructing the batter pile and places on the drilling pipe rack. In the process of drilling a rotary jet drill rod of a high-pressure rotary jet pile machine into a soil layer, after the rotary jet drill rod is drilled into a specified depth, a sliding seat moving actuating mechanism drives a sliding seat, a rotary power head and the tail part of the drill rod to move upwards for a set distance along a first guide rail, so that a polygonal plug-in pipe at the lower end of a tail drill pipe is separated from a polygonal plug-in hole at the upper end of a connecting drill pipe; then, the manipulator is used for carrying and installing a connecting drill pipe on the drill pipe placing frame on a rotary spraying drill rod of the high-pressure rotary spraying pile machine, concretely, the manipulator grabs the connecting drill pipe on the drill pipe placing frame, and then the polygonal inserting pipe at the lower end of the connecting drill pipe is inserted into the polygonal inserting hole of the connecting drill pipe at the upper end of the rotary spraying drill rod; then, the sliding seat moving actuating mechanism drives the sliding seat, the rotary power head and the tail part of the drill rod to move downwards for a set distance along the first guide rail, so that the polygonal inserting pipe at the lower end of the tail drill pipe is inserted into the polygonal inserting hole at the upper end of the connecting drill pipe. The manipulator is used for carrying and installing a connecting drill pipe on the drill pipe placing frame on a rotary spraying drill pipe of the high-pressure rotary spraying pile machine; the operator then connects two adjacent jointed drill pipes by tightening the locking bolts.

Similarly, after the jet grouting drill rod of the high-pressure jet grouting pile machine drills into a soil layer at a set depth, in the process of moving back (namely moving up) the jet grouting drill rod, after the jet grouting drill rod moves back for a specified length, the connecting drill pipe on the jet grouting drill rod of the high-pressure jet grouting pile machine is detached through the manipulator and placed on the drill pipe placing frame; so, at the in-process of construction high pressure jet grouting pile, need not artifical manual transport and install or dismantle the connection drill pipe of jet grouting drill pole to reduce manual operation, reduce intensity of labour, and improve the reinforced construction efficiency in tunnel.

Further, as shown in fig. 2 and 6, the drill pipe placing frame 4 includes a bottom frame disposed on the mounting platform, a rotating support 4.1 rotatably disposed on the bottom frame via a vertical shaft, and a rotation driving device 4.2 for driving the rotating support to rotate around the vertical shaft. The rotating support is provided with a plurality of vertical inserting holes which are uniformly distributed around the circumference of the vertical shaft rod, and the vertical inserting holes are used for inserting the connecting drill pipes of the rotary spraying drill rods. The rotating bracket frame comprises an upper mounting flat plate 4.12, a lower mounting flat plate 4.11 and a connecting piece for connecting the upper mounting flat plate and the lower mounting flat plate. The vertical plug-in mounting hole comprises a polygonal plug hole arranged on the upper mounting flat plate and a lower limiting hole arranged on the lower mounting flat plate. So, treat the connection drill pipe of installation and by the last connection drill pipe of dismantling of jet grouting drill rod can the cartridge in vertical cartridge hole, can do benefit to the high space on the one hand and place the connection drill pipe, on the other hand, the manipulator of being convenient for snatchs the connection drill pipe.

Further, as shown in fig. 1, the cement mixer 3.2 includes an upper mixing barrel 3.21 for mixing cement, a discharging pipe disposed at the bottom of the upper mixing barrel, a first switch valve disposed on the discharging pipe, a cement paste storage barrel 3.22 located below the upper mixing barrel, and a discharging pipe disposed at the bottom of the cement paste storage barrel. In this embodiment, go up still to be equipped with the stirring rake on the agitator and be used for driving stirring rake pivoted rotating electrical machines. The outlet of the discharging pipe is positioned above the bung hole of the cement paste storage barrel. The cement paste storage barrel is used for receiving cement paste discharged by the discharging pipe. The discharge pipe is provided with a second switch valve. The feeding pipeline comprises a feeding input pipe 3.3 connected with an inlet and a discharging pipe of the cement feeding pump, a feeding output pipe 3.4 connected with an outlet of the cement feeding pump and a plurality of branch pipelines. The branch pipelines correspond to the high-pressure jet grouting pile machines of the pile machine set one by one. One end of the branch pipeline is connected with the feeding output pipe, and the other end of the branch pipeline is connected with a cement grouting opening of the corresponding high-pressure rotary jet pile machine. The cement mixer of the embodiment mixes cement by the upper mixing barrel, outputs the mixed cement slurry to the cement slurry storage barrel through the discharging pipe, and supplies the cement slurry in the cement slurry storage barrel to the high-pressure rotary jet pile machine through the cement feeding pump and the feeding pipeline; so, can be through the continuous operation of last agitator, go up the every barrel cement that stirs of agitator, just can export the grout storage bucket through the unloading pipe with the grout that stirs in the last agitator as required to guarantee that the grout in the grout storage bucket can satisfy the needs of the continuous operation of high pressure jet pile machine soon.

The second embodiment is the same as the first embodiment, except that,

the pile machine set also comprises a high-pressure rotary jet pile machine (not shown in the figure) which is arranged on the mounting platform and used for constructing the vertical pile, and the two high-pressure rotary jet pile machines used for constructing the inclined pile are positioned at the same side of the high-pressure rotary jet pile machine used for constructing the vertical pile. In this embodiment, the high-pressure jet grouting pile machine for constructing vertical piles, the two high-pressure jet grouting pile machines for constructing inclined piles, and the cement supply device are sequentially distributed from the head of the traveling vehicle to the tail of the vehicle. In this embodiment, a concrete structure of a high-pressure jet grouting pile machine for constructing a vertical pile refers to a concrete structure of a high-pressure jet grouting pile machine for constructing an inclined pile in the embodiment, and the difference is that jet grouting drill rods of the high-pressure jet grouting pile machine for constructing a vertical pile are vertically distributed. The installation platform is provided with a vertical through hole, and a rotary spraying drill rod of the high-pressure rotary spraying pile machine for constructing the vertical pile penetrates through the vertical through hole.

So, can construct the vertical high pressure jet grouting stake of vertical distribution in the below construction of tunnel through the high pressure jet grouting stake machine that is used for constructing the vertical stake, it spouts stake cooperation with two high pressures jet grouting stake machines that are used for constructing the batter stake soon, construct the vertical high pressure jet grouting stake in the below of tunnel simultaneously and two high pressures jet grouting stake that the slope distributes and carry out the reliable support and the reinforcement of multi-angle to the tunnel, its tunnel reinforcement is effectual.

A drill pipe mounting device (not shown in the figure) is also arranged on the mounting platform at one side of the high-pressure jet grouting pile machine for constructing the vertical pile. The concrete structure of the drill pipe installation device refers to the drill pipe installation device in one embodiment.

The third embodiment, the remaining structure of the present embodiment refers to the first embodiment or the second embodiment, and the difference is that,

as shown in fig. 7 and 8, the high-pressure jet grouting pile machine further comprises a centrifugal locking device 2.9. Specifically, each high-pressure jet grouting pile machine comprises a centrifugal locking device. The outer side surfaces of the polygonal inserting pipe 2.111 connected with the drill pipe and the polygonal inserting pipe 2.111 at the lower end of the tail drill pipe are respectively provided with a radial mounting hole. The radial mounting hole extends along the radial direction of the polygonal insertion pipe. The centrifugal locking devices correspond to the radial mounting holes one by one. The centrifugal locking device comprises a radial sliding sleeve 2.91 arranged in the corresponding radial mounting hole and a radial locking rod 2.92 arranged in the radial sliding sleeve in a sliding manner. The axis of the radial sliding sleeve extends along the radial direction of the polygonal inserting pipe. The outer end opening of radial sliding sleeve, the outer end of radial sliding sleeve is located radial mounting hole. The inner end of the radial sliding sleeve is closed, and the inner end of the radial locking rod is connected with the inner end of the radial sliding sleeve through a tension spring 2.93. In this embodiment, the inner of radial locking lever is equipped with the extension spring accommodation hole, and the extension spring is located the extension spring accommodation hole, and one end and the inner of extension spring accommodation hole of extension spring are connected, and the other end and the inner of radial sliding sleeve of extension spring are connected. The inner end of the radial locking rod is abutted against the inner end face of the radial sliding sleeve under the action of the tension spring. When the inner end of the radial locking rod is abutted against the inner end face of the radial sliding sleeve, the radial locking rod is completely positioned in the radial sliding sleeve. And the inner side wall of each polygonal inserting hole connected with the drill pipe is provided with an annular clamping groove used for being matched with the radial locking rod.

When the polygonal insertion pipe is inserted into the polygonal insertion hole (the polygonal insertion pipe is inserted into the polygonal insertion hole means that the lower end face of the drill pipe on which the polygonal insertion pipe is located abuts against the upper end face of the drill pipe on which the polygonal insertion hole is located), the radial locking rod on the polygonal insertion pipe faces the annular clamping groove in the corresponding polygonal insertion hole. When the rotating speed of the rotary spraying drill rod exceeds a set value, the radial locking rod on the rotary spraying drill rod overcomes the tension of the tension spring under the action of centrifugal force, slides outwards along the radial sliding sleeve, and the outer end of the radial locking rod is inserted into the corresponding annular clamping groove.

at the in-process of spouting drilling rod construction high pressure jet grouting pile soon, spout the drilling rod soon and be in high-speed rotation state, at this moment, radial locking lever will insert in the ring groove that corresponds under the centrifugal force effect, so, spout the drilling rod soon and rotate on one side, generally move back to in-process of constructing the high pressure jet grouting pile in the soil layer, even if two locking bolts who connect the drill pipe appear not lock, these two connection drill pipes are under radial locking lever and ring groove's mating reaction, also can not throw off, therefore can effectively solve above-mentioned problem. On the other hand, because the polygonal insertion pipe at the lower end of the tail drill pipe is also provided with the centrifugal locking device, in the process of constructing the high-pressure jet grouting pile by the jet grouting drill pipe, the radial locking rod on the polygonal insertion pipe at the lower end of the tail drill pipe is inserted into the corresponding annular clamping groove under the action of centrifugal force, so that an operator does not need to screw the locking bolt on one connecting drill pipe adjacent to the tail drill pipe, the operation of connecting the tail drill pipe and the connecting drill pipe by screwing the locking bolt can be omitted, the operation step of manually screwing the locking bolt can be further simplified, the operator only needs to screw the locking bolt to connect two adjacent connecting drill pipes in the process of drilling the rotary jetting drill pipe of the high-pressure jet grouting pile machine into the soil layer and in the process of moving the rotary jetting drill pipe back after the rotary jetting drill pipe of the high-pressure jet grouting pile machine is drilled into the soil layer at the set depth, the operation of connecting the tail drill pipe and the drill pipe by screwing the locking bolt can be omitted.

In this embodiment, the radial sliding sleeve is connected with the radial mounting hole through threads. So, be convenient for radial sliding sleeve's installation and dismantlement.

The inner wall of the radial sliding sleeve is provided with a limiting sliding groove 2.94 extending along the axial direction of the radial sliding sleeve, and the outer side surface of the radial locking rod is provided with a sliding block 2.95 matched with the limiting sliding groove. Therefore, the radial locking rod can be prevented from being separated from the radial sliding sleeve.

The fourth embodiment, the remaining structure of this embodiment refers to the first embodiment, the second embodiment or the third embodiment, but the difference is that,

as shown in fig. 9 and 10, the high-pressure jet grouting pile driver further comprises a tail drill pipe separation anti-rotation aligning device 5. Specifically, each high-pressure rotary jet pile machine comprises a tail drill pipe separation anti-rotation aligning device. The sliding seat 2.6 of the high-pressure rotary jet pile machine comprises a first sliding seat 2.61 arranged on a first guide rail in a sliding manner, a second guide rail 2.62 arranged on the first sliding seat and parallel to the first guide rail, a sliding seat upper limiting block 2.64 and a sliding seat lower limiting block 2.65 arranged on the first sliding seat, and a second sliding seat 2.63 arranged on a second guide rail in a sliding manner and located between the sliding seat upper limiting block and the sliding seat lower limiting block. The sliding seat moving actuating mechanism is used for driving the first sliding seat to move along the first guide rail.

Afterbody drill pipe separation prevents changeing and adjusts device 5 includes the torsional spring, fixed cover 5.1 that sets up in afterbody drill pipe lower part, a plurality of circumference evenly distributed are at the axial locking groove 5.3 of the lateral surface lower part of fixed cover, the locking cover 5.2 on afterbody drill pipe lower part is established to the cover, connect the connecting piece of locking cover and first slide, set up lockplate holding tank 5.4 on the locking cover inner wall, be used for with axial locking groove complex lockplate 5.5 and set up the lockplate locating part in the lockplate holding tank. The outer side surface of the fixed sleeve, the locking sleeve and the rotating shaft of the tail drill pipe are coaxially distributed. The axial locking groove extends along the rotation axis direction of the tail drill pipe, and the lower end of the axial locking groove is communicated with the lower end face of the fixing sleeve. In this embodiment, the number of axial locking slots is 10-30. The upper portion of lockplate is located the lockplate holding tank, and the upper portion of lockplate leads to axostylus axostyle 5.6 and rotates and set up the lockplate holding tank in, and the lockplate locating part is located the outside of lockplate. The torsional spring is used for driving the lower part of the locking plate to rotate around the shaft rod towards the axis direction of the locking sleeve.

As shown in fig. 9, when the second slide seat abuts against the lower limit block of the slide seat, the locking sleeve is sleeved outside the fixing sleeve, the lower portion of the locking plate abuts against the upper portion of the outer side surface of the fixing sleeve under the action of the torsion spring, and the locking plate is located above the locking plate accommodating groove. In this embodiment, the lockplate lower part is equipped with the ball towards one side at locking cover center, and when the second slide supported on the spacing block under the slide, outside the fixed cover was established to the locking cover, the ball of the lower part of lockplate supported the lateral surface upper portion at fixed cover under the torsional spring effect, and lockplate was located the top of lockplate holding tank.

As shown in fig. 11, when the second sliding seat abuts against the limiting block on the sliding seat, the fixing sleeve is located above the locking sleeve, the locking plate abuts against the limiting block of the locking plate 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 jet grouting pile, the irregular or misoperation operation of an operator often occurs, so that the polygonal splicing pipe at the lower end of the tail drill pipe cannot be inserted into the polygonal splicing hole of the connecting drill pipe, and the construction operation efficiency is seriously affected; because the rotary spraying drill rod does not stop rotating, after the tail insertion pipe at the lower end of the tail drill pipe is separated from the polygonal insertion hole, the connecting drill pipe of the drill body of the rotary spraying drill rod stops rotating rapidly under the action of soil resistance, and the tail drill pipe continues to rotate to a certain extent, so that the polygonal insertion pipe at the lower end of the tail drill pipe and the polygonal insertion hole of the connecting drill pipe are staggered (namely the polygonal insertion pipe and the polygonal insertion hole are not aligned), therefore, when the manipulator grabs the connecting drill pipe on the drill pipe placing frame and inserts the polygonal insertion pipe at the lower end of the connecting drill pipe into the polygonal insertion hole of the connecting drill pipe at the upper end of the rotary spraying drill rod, the polygonal insertion pipe at the lower end of the tail drill pipe and the polygonal insertion hole of the connecting drill pipe are staggered in the process that the sliding seat moving actuating mechanism drives the sliding seat, the rotary power head and the tail of the drill pipe to move downwards along the first guide rail, the polygonal inserting pipe at the lower end of the tail drill pipe cannot be inserted into the polygonal inserting hole connected with the drill pipe;

in order to solve the problem that the operation of an operator is not standard or misoperation often occurs in the process of constructing the high-pressure jet grouting pile machine, so that the polygonal inserting pipe at the lower end of the tail drill pipe cannot be inserted into the polygonal inserting hole of the connecting drill pipe, and the construction operation efficiency is seriously influenced, the tail drill pipe separation anti-rotation aligning device is arranged in the embodiment,

in the process of drilling a rotary jet drill pipe of the high-pressure rotary jet pile machine into a soil layer, the lower end surface of the tail drill pipe abuts against the upper end surface of the rotary jet drill pipe at the upper end, connected with the drill pipe, of the rotary jet drill pipe, and the second sliding seat abuts against the limiting block on the sliding seat; the sliding seat moving actuating mechanism drives the second sliding seat and the rotary spraying drill rod to move downwards together through the limiting block on the sliding seat of the first sliding seat so that the rotary spraying drill rod can drill into a soil layer; after the rotary spraying drill rod is drilled into a specified depth, if an operator installs a rule that the rotary spraying drill rod stops rotating completely, the sliding seat is controlled to move the actuating mechanism to drive the sliding seat, the rotary power head and the tail part of the drill rod to move upwards along the first guide rail, so that the tail part plug-in pipe at the lower end of the tail part drill pipe is separated from the polygonal plug-in hole connected with the drill pipe, and the tail part plug-in pipe at the lower end of the tail part drill pipe is aligned with the polygonal plug-in hole connected with the drill pipe, and normal use is not influenced;

if the rotary spraying drill rod does not completely stop rotating, an operator controls the sliding seat to move the actuating mechanism to drive the sliding seat, the rotary power head and the tail part of the drill rod to move upwards along the first guide rail, in the process, the first sliding seat and the locking sleeve move upwards along the first guide rail firstly until the lower limiting block of the sliding seat abuts against the second sliding seat, and in the process, the second sliding seat and the tail drill pipe are kept against the upper end face of the connecting drill pipe at the upper end of the rotary spraying drill rod under the action of self weight and do not move; in the process that the locking sleeve moves upwards along the first guide rail, the locking sleeve is sleeved outside the fixing sleeve from bottom to top, so that the lower part of the locking plate is abutted against the outer side surface of the fixing sleeve under the action of a torsion spring; then, the locking sleeve continues to move upwards until the lower limiting block of the sliding seat abuts against the second sliding seat; when the lower limiting block of the sliding seat abuts against the second sliding seat, the locking plate is separated from the locking plate accommodating groove and is positioned above the locking plate accommodating groove. After the limiting block abuts against the second sliding seat under the sliding seat, the sliding seat moves the actuating mechanism to drive the first sliding seat, the second sliding seat, the rotary power head and the tail part of the drill rod to synchronously move upwards along the first guide rail, so that the tail part plug-in pipe at the lower end of the tail part drill pipe is separated from the polygonal plug-in hole connected with the drill pipe.

On the other hand, after the rotary jet drill rod of the high-pressure rotary jet pile machine drills into a set depth of a soil layer, in the process that the rotary jet drill rod moves back, the lower limiting block of the sliding seat abuts against the second sliding seat, and the sliding seat movement executing mechanism drives the first sliding seat, the second sliding seat, the rotary power head and the tail part of the drill rod to move up synchronously along the first guide rail, so that the rotary jet drill rod moves back; meanwhile, when the limiting block abuts against the second sliding seat under the sliding seat, the locking plate is separated from the locking plate accommodating groove and is located above the locking plate accommodating groove, so that the rotation of the rotary spraying drill rod cannot be influenced, and the high-pressure rotary spraying pile for the construction of the rotary spraying drill rod cannot be influenced.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a multi-angle soil cement pile construction system in subway tunnel, characterized by includes:

2. The system of claim 1, wherein the high pressure jet grouting pile driver comprises a frame mounted on the mounting platform, a support tower mounted on the frame, a first guide rail mounted on the support tower, a sliding seat sliding along the first guide rail, a sliding seat movement actuator for driving the sliding seat, and a rotary power head mounted on the sliding seat,

the rotary spraying drill rod further comprises a drill rod head arranged at the lower end of the drill body and a drill rod tail arranged at the upper end of the drill body, the drill rod tail comprises a tail drill pipe rotatably arranged on the sliding seat, a rotary connector rotatably connected to the upper end of the tail drill pipe and a cement grouting port arranged on the rotary connector, the rotary power head is used for driving the tail drill pipe to rotate, a drill bit is arranged at the lower end of the drill rod head, and a high-pressure rotary spraying hole is formed in the lower portion of the side wall of the drill rod head;

the drilling pipe comprises a connecting drilling pipe body and is characterized in that one end of the connecting drilling pipe body is provided with a polygonal inserting hole, the other end of the connecting drilling pipe body is provided with a polygonal inserting pipe, the outer side face of the connecting drilling pipe body is provided with a radial bolt hole communicated with the polygonal inserting hole and a locking bolt matched with the radial bolt hole, the polygonal inserting pipe of one connecting drilling pipe is inserted into the polygonal inserting hole of the other connecting drilling pipe body in any two adjacent connecting drilling pipes, and the lower end of the tail drilling pipe body is also provided with a polygonal inserting pipe matched with the polygonal inserting hole.

3. The system for constructing the multi-angle cement-soil pile in the subway tunnel as claimed in claim 2, wherein said high-pressure jet grouting pile machine further comprises a centrifugal locking device, radial mounting holes are provided on the outer side surfaces of the polygonal insertion pipe connecting the lower ends of the drill pipe and the tail drill pipe, the centrifugal locking device is in one-to-one correspondence with the radial mounting holes, the centrifugal locking device comprises a radial sliding sleeve arranged in the corresponding radial mounting hole and a radial locking rod slidably arranged in the radial sliding sleeve, the inner end of the radial sliding sleeve is closed, the inner end of the radial locking rod is connected with the inner end of the radial sliding sleeve through a tension spring, and an annular clamping groove for matching with the radial locking rod is provided on the inner side wall of the polygonal insertion hole connecting the drill pipe;

after the polygonal inserting pipe is inserted into the polygonal inserting hole, the radial locking rod on the polygonal inserting pipe faces the annular clamping groove in the corresponding polygonal inserting hole;

when the rotating speed of the rotary spraying drill rod exceeds a set value, the radial locking rod on the rotary spraying drill rod overcomes the tension of the tension spring under the action of centrifugal force, slides outwards along the radial sliding sleeve, and the outer end of the radial locking rod is inserted into the corresponding annular clamping groove.

4. The system for constructing the multi-angle cement-soil pile in the subway tunnel as claimed in claim 3, wherein said radial sliding sleeve is connected with said radial mounting hole by a screw thread.

5. The system for constructing the multi-angle cement-soil pile in the subway tunnel according to claim 1, 2 or 3, wherein a drill pipe installation device is further arranged on the installation platform between the two high-pressure jet grouting pile machines for constructing the inclined pile, the drill pipe installation device comprises a drill pipe placing frame and a manipulator which are arranged on the installation platform, the drill pipe placing frame is used for placing the connection drill pipe of the jet grouting drill rod, and the manipulator is used for carrying and installing the connection drill pipe on the drill pipe placing frame on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the inclined pile, or is used for detaching the connection drill pipe on the jet grouting drill rod of the high-pressure jet grouting pile machine for constructing the inclined pile and placing the connection drill pipe on the drill pipe placing frame.

6. The system for constructing the multi-angle cement-soil pile in the subway tunnel according to claim 5, wherein the drill pipe placing frame comprises a bottom frame arranged on the installation platform, a rotating support arranged on the bottom frame through rotation of a vertical shaft rod, and a rotary driving device for driving the rotating support to rotate around the vertical shaft rod, a plurality of vertical inserting holes are uniformly distributed in the circumferential direction of the vertical shaft rod and are used for inserting the rotary spraying drill rods into the vertical inserting holes.

7. The system for constructing the multi-angle cement-soil pile in the subway tunnel as claimed in claim 2 or 3, wherein said high-pressure jet grouting pile machine further comprises a rotating seat rotatably installed on the frame through a horizontal shaft and a rotating seat rotation actuator for driving the rotating seat to rotate, and said support tower bar is fixed on the rotating seat.

8. The system for constructing a multi-angle soil-cement pile in a subway tunnel according to claim 1, 2 or 3, the cement mixer is characterized by comprising an upper mixing barrel for mixing cement, a discharging pipe arranged at the bottom of the upper mixing barrel, a first switch valve arranged on the discharging pipe, a cement paste storage barrel positioned below the upper mixing barrel and a discharging pipe arranged at the bottom of the cement paste storage barrel, wherein the cement paste storage barrel is used for receiving cement paste discharged by the discharging pipe, the feed pipeline comprises a feed input pipe, a feed output pipe and a plurality of branch pipelines, wherein the feed input pipe is connected with the inlet of the cement feed pump and the discharge pipe, the feed output pipe is connected with the outlet of the cement feed pump, the branch pipelines are in one-to-one correspondence with the high-pressure rotary jet pile machines of the pile machine set, one ends of the branch pipelines are connected with the feed output pipe, and the other ends of the branch pipelines are connected with cement grouting ports of the corresponding high-pressure rotary jet pile machines.

9. The system for constructing the multi-angle cement-soil pile in the subway tunnel as claimed in claim 1, 2 or 3, wherein said pile assembly further comprises a high-pressure jet grouting pile machine for constructing vertical piles, which is disposed on the mounting platform, two high-pressure jet grouting pile machines for constructing inclined piles are disposed on the same side of the high-pressure jet grouting pile machine for constructing vertical piles, the jet grouting drill rods of the high-pressure jet grouting pile machine for constructing vertical piles are vertically distributed, and vertical through holes are disposed on the mounting platform, the jet grouting drill rods of the high-pressure jet grouting pile machine for constructing vertical piles pass through the vertical through holes, the jet grouting drill rods comprise drill bodies, and the drill bodies are composed of a plurality of sections of connecting drill pipes connected in sequence.

10. The system for constructing the multi-angle cement-soil pile in the subway tunnel according to claim 9, wherein a drill pipe mounting device is also arranged on the mounting platform on one side of the high-pressure jet grouting pile machine for constructing the vertical pile, the drill pipe mounting device comprises a drill pipe placing frame and a manipulator which are arranged on the mounting platform, wherein the drill pipe placing frame is used for placing the connection drill pipe of the jet grouting pile, and the manipulator is used for carrying and installing the connection drill pipe on the drill pipe placing frame on the jet grouting pile machine for constructing the vertical pile, or is used for detaching and placing the connection drill pipe on the jet grouting pile rod of the high-pressure jet grouting pile machine for constructing the vertical pile on the drill pipe placing frame.