CN111810204A

CN111810204A - Fine adjustment anchorage device and method capable of compensating prestress loss of water-rich sand layer

Info

Publication number: CN111810204A
Application number: CN202010561838.3A
Authority: CN
Inventors: 毛文龙; 周凯
Original assignee: Metro Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Current assignee: Metro Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Priority date: 2020-06-18
Filing date: 2020-06-18
Publication date: 2020-10-23
Anticipated expiration: 2040-06-18
Also published as: CN111810204B

Abstract

The invention discloses a fine-tuning anchor capable of compensating the prestress loss of a water-rich sand layer and a method thereof, wherein the fine-tuning anchor comprises a bottom plate, a control cabinet, a rack, a connecting plate and a third connecting rod, a hydraulic cylinder is fixed on the upper surface of the bottom plate, a multi-stage hydraulic rod is movably installed at the top end of the hydraulic cylinder, the top end of the multi-stage hydraulic rod is rotatably connected with one end of the third connecting rod through a second rotating shaft, the other end of the third connecting rod is rotatably connected with a shaft seat fixed on one side of the bottom end of the rack through the second rotating shaft, a lead screw is fixed in the middle of a groove in the upper surface of the rack, a stepping motor is fixed on the upper surface of the rack at one end of the lead screw, the stepping motor is rotatably connected with a lead screw in the lead screw, the middle of the. The invention has the advantages of constantly adjusting the angle of the anchorage device to adapt to the prestress in the construction process and reducing the possibility of soil layer collapse.

Description

Fine adjustment anchorage device and method capable of compensating prestress loss of water-rich sand layer

Technical Field

The invention relates to the technical field of water-rich sand layer construction, in particular to a fine adjustment anchorage device and a fine adjustment anchorage method capable of compensating the prestress loss of a water-rich sand layer.

Background

With the acceleration of the urbanization process, the available space of the city becomes a barrier for restricting the development of the city, and the development around the city and the utilization of the underground space of the city become one of the solutions. The construction of subways and various utility corridors effectively solves the problems that urban population is difficult to flow and various municipal services are incomplete.

The water-rich sand layer is characterized by that its sand content is large, its non-sand and small pebble content is less than 10% and its underground water is rich. The stratum has the characteristics that the stratum flow is large under the condition that local space leaks, the stratum disturbance in a large range is easily caused, meanwhile, the compressibility and the flowability of the soil layer are poor under the condition that the soil layer is locally extruded in a certain space, and the friction force of the soil layer is increased rapidly.

When the water-rich sand layer is constructed, in order to improve the service performance of the structure, the structure is pre-stressed during construction, and the pre-stressed stress during the service of the structure can fully or partially offset the tensile stress caused by load, so that the structural damage is avoided.

The angle of a general construction anchor is certain when the construction anchor is used for a water-rich sand layer, so that the pre-applied prestress can be changed along with the deepening of the anchor, and particularly in the water-rich sand layer, the soil layer can be locally extruded due to the change of the prestress, and the collapse can occur.

Disclosure of Invention

The invention aims to provide a fine-adjustment anchor capable of compensating the prestress loss of a water-rich sand layer and a method, which have the advantages of constantly adjusting the angle of the anchor to adapt to prestress in the construction process and reducing the possibility of soil layer collapse, and solve the problem that the soil layer is locally extruded and collapsed possibly due to the change of the prestress.

In order to achieve the purpose, the invention provides the following technical scheme: a fine-adjustment anchorage device capable of compensating the prestress loss of a water-rich sand layer comprises a bottom plate, a control cabinet, a frame, a connecting plate and a third connecting rod, wherein an oil tank is fixed on the upper surface of the bottom plate, a hydraulic pump is fixed on the upper surface of the bottom plate on one side of the oil tank, a hydraulic cylinder is fixed on the upper surface of the bottom plate on one side of the hydraulic pump, a multi-stage hydraulic rod is movably mounted at the top end of the hydraulic cylinder, the top end of the multi-stage hydraulic rod is rotatably connected with one end of the third connecting rod through a second rotating shaft, the other end of the third connecting rod is rotatably connected with a shaft seat fixed on one side of the bottom end of the frame through the second rotating shaft, a lead screw is fixed in the middle of a groove in the upper surface of the frame, a stepping motor is fixed on the upper surface of the frame at one end, an anchorage device is rotatably arranged at one end of the motor through a transmission shaft.

As a further scheme of the invention, the liquid inlet end of the hydraulic pump is communicated with the oil tank through an oil pipe, and the liquid outlet end of the hydraulic pump is communicated with the hydraulic cylinder through an oil pipe.

As a further scheme of the invention, the front end and the rear end of the other side of the bottom end of the rack are both fixed with first connecting rods, the bottom ends of the two first connecting rods are respectively and rotatably provided with second connecting rods through first rotating shafts, and the ends of the two second connecting rods departing from the first rotating shafts are respectively and fixedly connected with the front end and the rear end of one side of the upper surface of the bottom plate.

As a further scheme of the invention, the hydraulic pump is electrically connected with a terminal row at the rear end of the control cabinet through an electric wire, the terminal row at the rear end of the control cabinet is electrically connected with a sensor through an electric wire, and a display screen and an instrument panel are sequentially embedded and mounted on the front surface of the control cabinet from top to bottom.

As a further scheme of the invention, the front end and the rear end of the upper surface of the rack are both fixed with a track, and the front end and the rear end of the lower surface of the connecting plate are respectively connected with the track in a sliding way through a sliding block.

A fine adjustment method capable of compensating the prestress loss of a water-rich sand layer comprises the following steps:

s1, fixing the bottom plate and the control cabinet on the ground at the designated position, and electrically connecting the terminal row at the rear end of the control cabinet with the hydraulic pump, the sensor and the stepping motor through electric wires respectively;

s2, conveying the preset prestress data to a PLC control module in a control cabinet through a computer, embedding a sensor in a soil layer in advance to detect the prestress in the soil layer, transmitting the prestress data to the PLC control module in the control cabinet, and processing the transmitted prestress data by the control cabinet;

s3, when the motor is powered on, the anchor is driven to rotate through the transmission shaft, the rotating anchor faces the construction position, and the anchor rotates to penetrate into the soil layer; the stepping motor is electrified and started, the motor on the connecting plate is driven to move through the lead screw, and the motor continuously moves downwards to drive the rotating anchorage device to enter the soil layer;

and S4, as the anchorage device goes deep, if the prestress data detected by the sensor meets the index, the anchorage device goes deep continuously. When the prestress data and the original data are deviated, the hydraulic cylinder is started, one end of the rack is lifted or lowered under the combined action of the movement of the multistage hydraulic rod and the third connecting rod, the second rotating shaft and the shaft seat, the other end of the rack rotates relative to the bottom plate through the first connecting rod, the first rotating shaft and the second connecting rod, so that the angle of the rack is changed, the angle of the anchorage penetrating into the soil layer is slightly changed until the prestress data transmitted by the sensor is matched with the original data, and the anchorage is further kept.

Compared with the prior art, the invention has the following beneficial effects: when the motor is powered on, the anchor is driven to rotate by the transmission shaft, the rotating anchor faces the construction position, and the anchor rotates to penetrate into the soil layer. The stepping motor is electrified to start, the motor on the connecting plate is driven to move through the lead screw, and the motor continuously moves downwards to drive the rotating anchorage device to enter the soil layer. In the process that the anchorage device enters the soil layer, the sensor embedded in the soil layer detects the prestress in the soil layer in advance, transmits the prestress data to the PLC control module in the control cabinet, and the control cabinet processes the transmitted prestress data, and if the prestress data meets the index, the anchorage device continuously goes deep. When the prestress data and the original data are deviated, the hydraulic cylinder is started, one end of the rack is lifted or lowered under the combined action of the movement of the multistage hydraulic rod and the third connecting rod, the second rotating shaft and the shaft seat, the other end of the rack rotates relative to the bottom plate through the first connecting rod, the first rotating shaft and the second connecting rod, so that the angle of the rack is changed, the angle of the anchorage penetrating into the soil layer is slightly changed until the prestress data transmitted by the sensor is matched with the original data, and the anchorage is further kept. The angle of the anchorage device is adjusted constantly in the construction process to adapt to the prestress, so that the possibility of soil layer collapse is reduced, and the safety is higher.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic top view of the anchor assembly of the present invention;

FIG. 3 is a schematic view of a top connection structure of the rack of the present invention;

FIG. 4 is a schematic view of a front view structure of the present invention during angle adjustment;

fig. 5 is an enlarged schematic view of the invention at a.

In the figure: 1. a base plate; 2. an oil tank; 3. an oil pipe; 4. a hydraulic pump; 5. a hydraulic cylinder; 6. an instrument panel; 7. a display screen; 8. a control cabinet; 9. an electric wire; 10. a sensor; 11. a frame; 12. a track; 13. a connecting plate; 14. a motor; 15. a drive shaft; 16. an anchorage device; 17. a first connecting rod; 18. a first rotating shaft; 19. a second connecting rod; 20. a lead screw; 21. a stepping motor; 22. a multi-stage hydraulic rod; 23. a second rotating shaft; 24. a third connecting rod; 25. a shaft seat.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

Referring to fig. 1, an embodiment of the present invention: a fine-adjustment anchorage device capable of compensating the prestress loss of a water-rich sand layer comprises a bottom plate 1, a control cabinet 8, a rack 11, a connecting plate 13 and a third connecting rod 24, wherein an oil tank 2 is fixed on the upper surface of the bottom plate 1, and hydraulic oil is filled in the oil tank 2. The hydraulic pump 4 is fixed on the upper surface of the bottom plate 1 on one side of the oil tank 2, as is well known to those skilled in the art, the power supply of the hydraulic pump 4 is common, and the conventional means or common knowledge thereof is not described herein, and those skilled in the art can select and match the hydraulic pump according to their needs or convenience. The upper surface of the bottom plate 1 on one side of the hydraulic pump 4 is fixed with a hydraulic cylinder 5, the top end of the hydraulic cylinder 5 is movably provided with a multi-stage hydraulic rod 22, the top end of the multi-stage hydraulic rod 22 is rotatably connected with one end of a third connecting rod 24 through a second rotating shaft 23, the other end of the third connecting rod 24 is rotatably connected with a shaft seat 25 fixed on one side of the bottom end of the rack 11 through the second rotating shaft 23, a lead screw 20 is fixed in the middle of a groove on the upper surface of the rack 11, and a stepping motor 21 is fixed on the upper surface of the rack 11 at one end of the lead screw 20. The stepping motor 21 is rotatably connected with the screw rod in the screw rod 20, and the middle of the lower surface of the connecting plate 13 is movably connected with the screw rod 20. The front end and the rear end of the upper surface of the frame 11 are both fixed with tracks 12, and the front end and the rear end of the lower surface of the connecting plate 13 are respectively connected with the tracks 12 in a sliding manner through sliders. The motor 14 is fixed on the upper surface of the connecting plate 13, as is well known to those skilled in the art, the power supply of the motor 14 is common and is conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience. One end of the motor 14 is rotatably provided with an anchorage device 16 through a transmission shaft 15.

Example 2

Referring to fig. 1, 4 and 5, an embodiment of the present invention is shown: the utility model provides a can compensate fine setting ground tackle of rich water sand bed prestressing loss, the feed liquor end of hydraulic pump 4 passes through

oil pipe

3 and 2 intercommunications of oil tank, and the play liquid end of hydraulic pump 4 passes through

oil pipe

3 and 5 intercommunications of pneumatic cylinder, and hydraulic pump 4 passes through oil pipe 3 with the hydraulic oil in the oil tank 2 and carries pneumatic cylinder 5 in, and pneumatic cylinder 5 passes through hydraulic oil promotion multistage hydraulic stem 22 and moves up. The hydraulic pump 4 pumps the hydraulic oil in the hydraulic cylinder 5 back into the oil tank 2 through the oil pipe 3, and the hydraulic cylinder 5 drives the multistage hydraulic rod 22 to move downwards. The front end and the rear end of the other side of the bottom end of the frame 11 are both fixed with first connecting rods 17, the bottom ends of the two first connecting rods 17 are respectively rotatably provided with second connecting rods 19 through first rotating shafts 18, and the ends of the two second connecting rods 19 departing from the first rotating shafts 18 are respectively fixedly connected with the front end and the rear end of one side of the upper surface of the bottom plate 1. The other end of the frame 11 rotates relative to the base plate 1 through the first connecting rod 17, the first rotating shaft 18 and the second connecting rod 19, so that the multistage hydraulic rod 22 can move up and down to drive the frame 11 to adjust the angle.

Example 3

Referring to fig. 2 and 3, an embodiment of the present invention: a fine-adjustment anchorage device capable of compensating the prestress loss of a water-rich sand layer is characterized in that a lead screw 20 is fixed in the middle of a groove in the upper surface of a rack 11, a stepping motor 21 is fixed on the upper surface of the rack 11 at one end of the lead screw 20, the stepping motor 21 is rotatably connected with the lead screw in the lead screw 20, the middle of the lower surface of a connecting plate 13 is movably connected with the lead screw 20, a motor 14 is fixed on the upper surface of the connecting plate 13, and an anchorage device 16 is rotatably installed at one end of the motor 14 through a. Step motor 21 is electrified and started, motor 14 on connecting plate 13 is driven to move through lead screw 20, and motor 14 continuously moves down to drive rotary anchor 16 to enter the soil layer. The lead screw 20 can drive the connecting plate 13 to reciprocate back and forth.

Example 4

Referring to fig. 1 and 4, an embodiment of the present invention is shown: a fine adjustment method capable of compensating the prestress loss of a water-rich sand layer comprises the following steps:

s1, fixing the bottom plate 1 and the control cabinet 8 on the ground at the designated position, sequentially embedding and installing the display screen 7 and the instrument panel 6 on the front surface of the control cabinet 8 from top to bottom, and electrically connecting the terminal row at the rear end of the control cabinet 8 with the hydraulic pump 4, the sensor 10 and the stepping motor 21 through the electric wire 9 respectively;

s2, sending the pre-stress data to the PLC control module in the control cabinet 8 by a computer, as is well known to those skilled in the art, the sensors 10 are provided in the common sense, which belongs to the conventional means or common knowledge, and will not be described herein, and those skilled in the art can make any choice according to their needs or convenience. The sensor 10 is embedded in the soil layer in advance to detect the prestress in the soil layer, the prestress data is transmitted to the PLC control module in the control cabinet 8, and the control cabinet 8 processes the transmitted prestress data;

s3, starting the motor 14 by electrifying, driving the anchorage device 16 to rotate through the transmission shaft 15, wherein the rotating anchorage device 16 faces the construction position, and the anchorage device 16 rotates to go deep into the soil layer; the stepping motor 21 is electrified and started, the motor 14 on the connecting plate 13 is driven to move through the lead screw 20, and the motor 14 continuously moves downwards to drive the rotating anchorage device 16 to enter the soil layer;

s4, as anchor 16 advances, if the prestress data detected by sensor 10 meets the criteria, anchor 16 continues to advance. When the prestress data is deviated from the original data, the hydraulic cylinder 5 is started, one end of the frame 11 is lifted or lowered through the combined action of the movement of the multistage hydraulic rod 22 and the third connecting rod 24, the second rotating shaft 23 and the shaft seat 25, the other end of the frame 11 rotates relative to the bottom plate 1 through the first connecting rod 17, the first rotating shaft 18 and the second connecting rod 19, so that the angle of the frame 11 is changed, the angle of the anchorage device 16 penetrating into the soil layer is slightly changed until the prestress data transmitted by the sensor 10 is matched with the original data, and then the anchorage device 16 is kept penetrating.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a can compensate fine setting ground tackle of rich water sand bed prestressing loss, includes bottom plate (1), switch board (8), frame (11), connecting plate (13) and third connecting rod (24), its characterized in that: the hydraulic pump is characterized in that an oil tank (2) is fixed on the upper surface of the bottom plate (1), a hydraulic pump (4) is fixed on the upper surface of the bottom plate (1) on one side of the oil tank (2), a hydraulic cylinder (5) is fixed on the upper surface of the bottom plate (1) on one side of the hydraulic pump (4), a multi-stage hydraulic rod (22) is movably mounted at the top end of the hydraulic cylinder (5), the top end of the multi-stage hydraulic rod (22) is rotatably connected with one end of a third connecting rod (24) through a second rotating shaft (23), the other end of the third connecting rod (24) is rotatably connected with a shaft seat (25) fixed on one side of the bottom end of a rack (11) through the second rotating shaft (23), a lead screw (20) is fixed in the middle of a groove on the upper surface of the rack (11), a stepping motor (21) is fixed on the upper surface of the rack (11) at, the middle of the lower surface of the connecting plate (13) is movably connected with the lead screw (20), the upper surface of the connecting plate (13) is fixedly provided with a motor (14), and one end of the motor (14) is rotatably provided with an anchorage device (16) through a transmission shaft (15).

2. The fine tuning anchor of claim 1, wherein the fine tuning anchor is capable of compensating for a loss of prestress in the water-rich sand layer by: the liquid inlet end of the hydraulic pump (4) is communicated with the oil tank (2) through the oil pipe (3), and the liquid outlet end of the hydraulic pump (4) is communicated with the hydraulic cylinder (5) through the oil pipe (3).

3. The fine tuning anchor of claim 1, wherein the fine tuning anchor is capable of compensating for a loss of prestress in the water-rich sand layer by: both ends all are fixed with head rod (17) around frame (11) bottom opposite side, and second connecting rod (19) are installed in the bottom of two head rods (17) through first pivot (18) rotation respectively, and the one end that two second connecting rod (19) deviate from first pivot (18) is respectively with bottom plate (1) upper surface one side both ends fixed connection around.

4. The fine tuning anchor of claim 1, wherein the fine tuning anchor is capable of compensating for a loss of prestress in the water-rich sand layer by: the hydraulic pump (4) is connected through the terminal row electricity of electric wire (9) and switch board (8) rear end, the terminal row of switch board (8) rear end is connected with sensor (10) through electric wire (9) electricity, and switch board (8) are openly from last to installing display screen (7) and panel board (6) to embedding in proper order down.

5. The fine tuning anchor of claim 1, wherein the fine tuning anchor is capable of compensating for a loss of prestress in the water-rich sand layer by: the front end and the rear end of the upper surface of the rack (11) are both fixed with tracks (12), and the front end and the rear end of the lower surface of the connecting plate (13) are respectively connected with the tracks (12) in a sliding manner through sliders.

6. The fine-tuning method capable of compensating the prestress loss of the water-rich sand layer according to claim 1, comprising the following steps of:

s1, fixing the bottom plate (1) and the control cabinet (8) on the ground at a specified position, and electrically connecting a terminal row at the rear end of the control cabinet (8) with the hydraulic pump (4), the sensor (10) and the stepping motor (21) through electric wires (9) respectively;

s2, conveying the preset prestress data to a PLC control module in a control cabinet (8) through a computer, embedding a sensor (10) in a soil layer in advance to detect the prestress in the soil layer, transmitting the prestress data to the PLC control module in the control cabinet (8), and processing the transmitted prestress data by the control cabinet (8);

s3, starting the motor (14) by electrifying, driving the anchor (16) to rotate through the transmission shaft (15), wherein the rotating anchor (16) faces the construction position, and the anchor (16) rotates to go deep into the soil layer; the stepping motor (21) is electrified and started, the motor (14) on the connecting plate (13) is driven to move through the lead screw (20), and the motor (14) continuously moves downwards to drive the rotating anchorage device (16) to enter a soil layer;

s4, as the anchor (16) goes deep, if the prestress data detected by the sensor (10) meets the index, the anchor (16) goes deep continuously. When the prestress data is deviated from the original data, the hydraulic cylinder (5) is started, one end of the rack (11) is lifted or lowered under the combined action of the movement of the multistage hydraulic rod (22) and the third connecting rod (24), the second rotating shaft (23) and the shaft seat (25), the other end of the rack (11) rotates relative to the bottom plate (1) through the first connecting rod (17), the first rotating shaft (18) and the second connecting rod (19), so that the angle of the rack (11) is changed, the angle of the anchorage device (16) penetrating into the soil layer is slightly changed until the prestress data transmitted by the sensor (10) is matched with the original data, and then the anchorage device (16) is kept penetrating into the soil layer.