CN216894234U - Cement-soil pile construction equipment - Google Patents

Abstract

The utility model 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 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 utility model relates to cement-soil pile construction equipment, in particular to cement-soil pile construction equipment 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. Present tunnel reinforcement construction equipment generally adopts high pressure jet grouting stake machine to be under construction, and is specific, and high pressure jet grouting stake machine utilizes jet grouting drill pipe to drill soon, makes jet grouting drill pipe bore and sets for the degree of depth soon, utilizes jet grouting drill pipe to carry out the high-pressure injection slip casting soon after to form high pressure jet grouting stake in the soil layer of tunnel below and be used for supporting the tunnel, in order to realize the reinforcement to the tunnel. Because the inner diameter of the tunnel is very limited, the length of the jet grouting drill rod is far greater than that of the tunnel, the jet grouting drill rod of the existing high-pressure jet grouting pile machine generally adopts a plurality of sections of drill pipes which are sequentially connected, and in specific construction, after the jet grouting drill rod drills into a specified depth, a section of drill pipe is additionally arranged, so that the jet grouting drill rod drills into the set depth; at present, in actual construction, the installation of the drill pipe of the jet grouting drill pipe of the high-pressure jet grouting pile machine generally adopts manual installation completely, specifically, the drill pipe is carried manually, and the drill pipe is manually installed on the jet grouting drill pipe, so that the labor intensity is high, the installation efficiency is low, the construction efficiency of tunnel reinforcement can be influenced, and the construction period of tunnel reinforcement is prolonged. In view of this, how to develop a cement soil pile construction equipment for tunnel reinforcement construction to reduce manual operation, reduce intensity of labour, improve the efficiency of construction, it is significant.

SUMMERY OF THE UTILITY MODEL

The utility model 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 technical scheme of the utility model is as follows:

a cement-soil pile construction device comprises a high-pressure jet grouting pile machine, wherein the high-pressure jet grouting pile machine 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, the drill body consists of a plurality of sections of connected drill pipes connected in sequence, the drill rod tail part comprises a tail drill pipe rotatably arranged on the sliding seat, the rotary power head is used for driving the tail drill pipe to rotate, the cement-soil pile construction device further comprises a walking vehicle, a mounting platform arranged on the walking vehicle and an automatic drill pipe mounting device, the high-pressure jet grouting pile machine is mounted on the mounting platform through the frame, the automatic drill pipe mounting device comprises a drill pipe placing rack and a mechanical arm arranged on the mounting platform, the manipulator is used for carrying and installing the connecting drill pipe on the drill pipe placing frame on the rotary spraying drill pipe of the high-pressure rotary spraying pile machine, or is used for detaching the connecting drill pipe on the rotary spraying drill pipe of the high-pressure rotary spraying pile machine and placing the connecting drill pipe on the drill pipe placing frame.

In the process of constructing the high-pressure jet grouting pile, the jet grouting drill rod of the high-pressure jet grouting pile machine drills into a soil layer, and after the jet grouting drill rod drills into a specified depth, the connecting drill pipe on the drill pipe placing frame is carried and installed on the jet grouting drill rod of the high-pressure jet grouting 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 is 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, one end of each connecting drill pipe is provided with a polygonal inserting hole, the other end of each connecting drill pipe is provided with a polygonal inserting pipe, the outer side surface of each 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, the polygonal inserting pipe of one connecting drill pipe is inserted into the polygonal inserting hole of the other connecting drill pipe in any two adjacent connecting drill pipes, and the lower end of the tail drill pipe is also provided with a polygonal inserting pipe matched with the polygonal inserting hole.

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 to 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 mode, the inner end of the radial sliding sleeve is sealed, 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, 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. So, can be in the tilt state through adjusting the jet grouting drilling rod, construct the high-pressure jet grouting stake of declination in the right side below in tunnel and construct the high-pressure jet grouting stake of declination in the left side below in tunnel to carry out the reliable support and the reinforcement of multi-angle through the high-pressure jet grouting stake of declination and the high-pressure jet grouting stake of declination to the tunnel, tunnel reinforcing effect is good.

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. 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.

Preferably, the rotating support comprises an upper mounting flat plate and a lower mounting flat plate, and the vertical insertion holes comprise polygonal insertion holes formed in the upper mounting flat plate and lower limiting holes formed in the lower mounting flat plate.

The utility model has the beneficial effects that: the manual operation can be reduced, the labor intensity is reduced, and the construction efficiency of tunnel reinforcement is improved.

Drawings

Fig. 1 is a schematic structural view of a soil cement pile construction apparatus according to a first embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partial structural schematic view of a rotary jetting drill pipe according to a first embodiment of the present invention.

Fig. 4 is a schematic diagram of a drill pipe placing rack according to a first embodiment of the present invention.

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

Fig. 6 is a partially enlarged view at B in fig. 5.

Fig. 7 is a partial structural view of a soil cement pile constructing apparatus according to an embodiment of the present invention, in which a second slide is abutted against a lower stopper of the slide.

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

Fig. 9 is another partial structural view of a soil cement pile constructing apparatus according to an embodiment of the present invention, in which a second slide is abutted against a stopper block on the slide.

In the figure:

a traveling vehicle 1;

the high-pressure rotary jet grouting pile machine comprises a high-pressure rotary jet grouting pile machine 2, a rotary jet grouting drill rod 2.1, a connecting drill pipe 2.11, a polygonal insertion pipe 2.111, a polygonal insertion hole 2.112, a tail drill pipe 2.12, a drill rod head 2.13, a drill bit 2.131, a high-pressure rotary jet grouting hole 2.132, a frame 2.2, a support tower rod 2.3, a rotary power head 2.4, a rotary seat 2.5, a sliding seat 2.6, a first sliding seat 2.61, a second guide rail 2.62, a second sliding seat 2.63, a sliding seat upper limit block 2.64, a sliding seat lower limit block 2.65, a rotary seat rotary execution mechanism 2.7, a first guide rail 2.8, a centrifugal locking device 2.9, a radial sliding sleeve 2.91, a radial locking rod 2.92, a tension spring 2.93, a limit sliding groove 2.94 and a sliding block 2.95;

a manipulator 3;

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;

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, not all embodiments. Other embodiments obtained by persons skilled in the art without making creative efforts based on the embodiments in the implementation belong to the protection scope of the utility model.

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 embodiments of the utility model are not limited correspondingly in scope. 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 and 4, a cement-soil pile construction device comprises a traveling vehicle 1, a high-pressure jet grouting pile machine 2, a mounting platform arranged on the traveling vehicle and an automatic drill pipe mounting device. The travelling vehicle is a crawler-type travelling vehicle, or a rubber wheel type travelling vehicle, or a rail wheel type travelling vehicle suitable for travelling on rails.

The high-pressure jet grouting pile driver 2 comprises a jet grouting 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 movement executing mechanism used for driving the sliding seat and a rotary power head 2.4 arranged on the sliding seat. The sliding seat moving actuating mechanism is an oil cylinder or an electric cylinder or a linear sliding rail or other moving actuating mechanisms arranged on the supporting tower rod. In this embodiment, the sliding seat movement actuator is a chain transmission mechanism disposed on the support tower, and the sliding seat is connected to a chain of the chain transmission mechanism. 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 and a drill rod tail part connected with 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. The rotary power head 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 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 automatic drill pipe mounting device comprises a drill pipe placing frame 4 and a manipulator 3 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, and the manipulator is used for carrying and mounting the connecting drill pipe on the drill pipe placing frame on the rotary spraying drill rod of the high-pressure rotary spraying pile machine or is used for dismounting the connecting drill pipe on the rotary spraying drill rod of the high-pressure rotary spraying pile machine and placing the connecting drill pipe on the drill pipe placing frame.

In the process of constructing the high-pressure jet grouting pile, the jet grouting drill rod of the high-pressure jet grouting pile machine drills into a soil layer, and after the jet grouting drill rod drills into a specified depth, the sliding seat moving actuating mechanism drives the sliding seat, the rotary power head and the tail part of the drill rod to move upwards along the first guide rail for a set distance, so that the polygonal inserting pipe at the lower end of the tail drill pipe is separated from the polygonal inserting hole at the upper end of the 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.

Specifically, as shown in fig. 3, the jet grouting drill rod further comprises a drill rod head 2.13 arranged at the lower end of the drill body, and a drill bit 2.131 is arranged at the lower end of the drill rod head. 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 drill rod tail part also comprises a rotating connector which is rotatably connected to the upper end of the tail drill pipe, and a cement grouting port and an air injection port are arranged on the rotating connector. The high-pressure rotary jet pile machine can directly utilize the drill rod device to drill holes, so that the high-pressure rotary jet hole at the head part of the drill rod is driven to drill into a set depth; and then, high-pressure jet grouting is directly carried out by using a drill rod device to form a high-pressure jet grouting 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.

Further, as shown in fig. 1 and 4, 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 and fig. 2, the high-pressure jet grouting pile driver further includes a rotating base 2.5 rotatably disposed on the frame through a horizontal shaft and a rotating base rotation actuator 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 in the tilt state through adjusting the jet grouting drilling rod, construct the high-pressure jet grouting stake of declination in the right side below in tunnel and construct the high-pressure jet grouting stake of declination in the left side below in tunnel to carry out the reliable support and the reinforcement of multi-angle through the high-pressure jet grouting stake of declination and the high-pressure jet grouting stake of declination to the tunnel, tunnel reinforcing effect is good.

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

as shown in fig. 5 and 6, the high-pressure jet grouting pile machine further comprises a centrifugal locking device 2.9. 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.

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.

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 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 driver further comprises a tail drill pipe separation anti-rotation aligning device 5. The sliding seat 2.6 comprises a first sliding seat 2.61 arranged on the 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 the 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 direction of the rotating shaft 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. 7, 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, lockplate lower part is equipped with the ball towards one side at locking cover center, supports when the second slide on the spacing block under the slide, outside 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 is located the top of lockplate holding tank.

As shown in fig. 9, 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 abutting 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 limit 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 (10)

1. A cement-soil pile construction device comprises a high-pressure rotary jet pile machine, wherein the high-pressure rotary jet pile machine comprises a rotary jet 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 rotary jet drill rod comprises a drill body and a drill rod tail part connected with the upper end of the drill body, the drill body consists of a plurality of sections of connected drill pipes connected in sequence, the drill rod tail part comprises a tail drill pipe rotatably arranged on the sliding seat, the rotary power head is used for driving the tail drill pipe to rotate, the cement-soil pile construction device is characterized by further comprising a walking vehicle, an installation platform arranged on the walking vehicle and an automatic drill pipe installation device, the high-pressure rotary jet pile machine is installed on the installation platform through the frame, the automatic drill pipe installation device comprises a drill pipe placing rack and a mechanical arm arranged on the installation platform, the manipulator is used for carrying and installing the connecting drill pipe on the drill pipe placing frame on the rotary spraying drill pipe of the high-pressure rotary spraying pile machine, or is used for detaching the connecting drill pipe on the rotary spraying drill pipe of the high-pressure rotary spraying pile machine and placing the connecting drill pipe on the drill pipe placing frame.

2. A cement-soil pile construction equipment as claimed in claim 1, wherein one end of said connecting drill pipe is provided with a polygonal insertion hole, the other end of said connecting drill pipe is provided with a polygonal insertion pipe, the outer side surface of said connecting drill pipe is provided with radial bolt holes communicated with said polygonal insertion hole and locking bolts engaged with said radial bolt holes, any two adjacent connecting drill pipes are arranged, one polygonal insertion pipe of said connecting drill pipe is inserted into the polygonal insertion hole of the other connecting drill pipe, and the lower end of said tail drill pipe is also provided with a polygonal insertion pipe engaged with said polygonal insertion hole.

3. A cement pile construction device as claimed in claim 2, wherein the 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 polygonal insertion 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.

4. A cement-soil pile construction device as claimed in claim 3, wherein, when the polygonal insertion pipe is inserted into the polygonal insertion hole, the radial locking rod on the polygonal insertion pipe faces the annular 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.

5. A soil cement pile construction equipment as claimed in claim 3, wherein the radial sliding sleeve is threadedly engaged with the radial mounting hole.

6. A soil cement pile construction equipment as claimed in claim 3, wherein the inner wall of the radial sliding sleeve is provided with a limiting sliding groove extending in the axial direction of the radial sliding sleeve, and the outer side surface of said radial locking lever is provided with a sliding block engaged with the limiting sliding groove.

7. A cement pile construction equipment as claimed in claim 1, wherein said high pressure jet grouting pile machine further comprises a rotary seat rotatably installed on the frame through a horizontal shaft and a rotary seat rotation actuator for driving the rotary seat to rotate, said support tower bar being fixed on the rotary seat.

8. The cement-soil pile construction equipment as claimed in claim 1, wherein the drill pipe placing frame comprises a bottom frame arranged on the mounting platform, a rotating support arranged on the bottom frame through rotation of a vertical shaft rod, and a rotation 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 the rotary jet drill pipes.

9. A soil-cement pile construction equipment as claimed in claim 8, wherein said rotation bracket comprises an upper mounting plate and a lower mounting plate, and said vertical insertion holes comprise polygonal insertion holes provided on the upper mounting plate and lower limiting holes provided on the lower mounting plate.

10. A soil cement pile construction apparatus as claimed in claim 9, wherein said pivotal bracket further comprises an upper mounting plate and a lower mounting plate connecting member.

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