CN217278331U - Be applicable to soft ground tunnel cave-forming device in laboratory - Google Patents
Be applicable to soft ground tunnel cave-forming device in laboratory Download PDFInfo
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- CN217278331U CN217278331U CN202123329574.8U CN202123329574U CN217278331U CN 217278331 U CN217278331 U CN 217278331U CN 202123329574 U CN202123329574 U CN 202123329574U CN 217278331 U CN217278331 U CN 217278331U
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Abstract
The utility model discloses a tunneling device suitable for a soft rock-soil tunnel in a laboratory, which comprises a lower bearing plate, a lifting component, an upper bearing plate and a drilling component from bottom to top in sequence; the upper bearing plate is horizontally arranged above the lower bearing plate, and the lifting assembly is connected between the upper bearing plate and the lower bearing plate and is used for driving the upper bearing plate to move along the vertical direction; the drilling assembly comprises a supporting seat, a sliding sleeve, a cutting barrel and a driving motor, the supporting seat is fixed on the upper bearing plate, a horizontal sliding hole is formed in the upper portion of the supporting seat, the sliding sleeve horizontally penetrates through the supporting seat through the sliding hole, and the sliding sleeve can move or rotate along the sliding hole; the front end of the cutting cylinder is open, the tail end of the cutting cylinder is closed, the tail end of the cutting cylinder is fixedly connected with the front end of the sliding sleeve, and the cutting cylinder is coaxial with the sliding sleeve; a motor shaft of the driving motor is fixedly connected with the tail end of the sliding sleeve; the upper bearing plate is also provided with a moving assembly which is fixedly connected with the driving motor and used for driving the driving motor to reciprocate along the direction of the sliding sleeve.
Description
Technical Field
The utility model belongs to the technical field of geotechnical engineering, concretely relates to be applicable to soft geotechnical tunnel boring device in laboratory.
Background
The phenomenon that a lining is not tightly contacted with a base layer and even partially separated from the base layer generally exists in a tunnel excavated by a shield due to the reasons that the base layer is overexcited and is not backfilled, concrete is not tightly tamped and the like. The cavities behind the wall with different shapes, positions and sizes easily cause stress concentration and crack development of the lining structure, even cause serious safety accidents of local stripping and block falling, influence the normal service life of the tunnel and influence the life and property safety of people who use the tunnel.
The model test is a research method for geotechnical media, engineering structures and physical and mechanical characteristics with early development, wide application and visual image based on the similarity principle as a theoretical basis. The model test can simulate various relatively complex boundary conditions and can comprehensively and vividly present the stress and deformation mechanism, failure mechanism, form and overall appearance of instability stage under the combined action of the engineering structure and the related rock-soil body. At present, when a laboratory simulation tunnel is excavated, a corresponding tunneling test device is lacked, and the development of tests is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model provides a be applicable to soft ground tunnel boring device in laboratory, aim at lacks the problem that corresponds the device of fetching earth in solving current laboratory tunnel boring simulation.
Therefore, the utility model adopts the following technical scheme:
a cave-forming device suitable for a soft rock-soil tunnel in a laboratory comprises a lower bearing plate, a lifting assembly, an upper bearing plate and a drilling assembly from bottom to top in sequence;
the bottom of the lower bearing plate is provided with a supporting roller;
the upper bearing plate is horizontally arranged above the lower bearing plate, the lifting assembly is connected between the upper bearing plate and the lower bearing plate, and the lifting assembly is used for driving the upper bearing plate to move up and down along the vertical direction;
the drilling assembly comprises a supporting seat, a sliding sleeve, a cutting cylinder and a driving motor, the supporting seat is fixed on the upper bearing plate, a horizontal sliding hole is formed in the upper portion of the supporting seat, the sliding sleeve horizontally penetrates through the supporting seat through the sliding hole, and the sliding sleeve can move or rotate along the sliding hole; the front end of the cutting cylinder is open, the tail end of the cutting cylinder is closed, the tail end of the cutting cylinder is fixedly connected with the front end of the sliding sleeve, and the cutting cylinder is coaxial with the sliding sleeve; a motor shaft of the driving motor is fixedly connected with the tail end of the sliding sleeve; the upper bearing plate is also provided with a moving assembly which is fixedly connected with the driving motor and used for driving the driving motor to reciprocate along the direction of the sliding sleeve.
Furthermore, the lifting assembly comprises a lifting frame and a hydraulic cylinder, the lower end of the hydraulic cylinder is hinged with the middle part of the upper surface of the lower bearing plate, and the upper end of the hydraulic cylinder is hinged with the middle part of the lower surface of the upper bearing plate; the lifting frame comprises two lifting frames which are respectively arranged at two sides of the hydraulic cylinder, the lower end of the lifting frame is connected with the lower bearing plate, and the upper end of the lifting frame is connected with the upper bearing plate.
Furthermore, the hydraulic cylinder is connected with an operating rod for adjusting the hydraulic cylinder to stretch, and the head end of the operating rod extends to the outer side of the lower bearing plate.
Further, the moving assembly comprises a guide rail, a lead screw, a stepping motor, a supporting plate and a nut; the two guide rails are fixed at the top of the upper bearing plate and are parallel to the sliding sleeve; the lead screw is arranged between the two guide rails, and the stepping motor is connected to the tail end of the lead screw;
the support plate is connected with the guide rail in a sliding mode, the nut is fixedly connected to the bottom of the support plate and is in transmission connection with the lead screw, and the driving motor is fixed to the support plate.
Furthermore, a hydraulic push rod is fixedly connected in the inner cavity of the sliding sleeve along the axis direction, an opening is formed in the center of the tail end of the cutting cylinder, and the front end of the hydraulic push rod penetrates through the opening and extends into the cutting cylinder; the front end of the hydraulic push rod is fixedly connected with a pushing disc, and the diameter of the pushing disc is slightly smaller than the outer diameter of the sliding sleeve.
Further, when the hydraulic push rod extends to the farthest end, the pushing disc is close to the outlet of the cutting drum.
Furthermore, the front end of the cutting cylinder is fixedly connected with annular cutting teeth, and the cutting teeth protrude forwards.
Furthermore, the tail end of the upper bearing plate is connected with a hand push rod.
The beneficial effects of the utility model reside in that: the device is adjustable in height, so that the hole forming operation can be conveniently carried out at the required height, and the test can be conveniently carried out; a round steel plate for pushing out rock soil is arranged in the cutting cylinder, so that the rock soil in the cutting cylinder can be conveniently discharged; the device simple structure, easily operation, the convenience is used in the laboratory.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a front view of the supporting seat of the present invention;
fig. 3 is a schematic structural view of the hydraulic push rod and the pushing disc of the present invention;
FIG. 4 is a schematic view of the soil borrowing process of the present invention;
in the figure: 1-a lower bearing plate, 2-a support roller, 3-an upper bearing plate, 4-a hydraulic cylinder, 5-a lifting frame, 6-an operating rod, 7-a supporting seat, 8-a sliding hole, 9-a sliding sleeve, 10-a driving motor, 11-a cutting cylinder, 12-a cutting tooth, 13-a hydraulic push rod, 14-a material pushing disc, 15-a hand push rod and 16-a moving assembly.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings:
as shown in figure 1, the tunneling device suitable for the soft rock-soil tunnel in the laboratory comprises a lower bearing plate 1, a lifting assembly, an upper bearing plate 3 and a drilling assembly from bottom to top in sequence. The bottom of the lower bearing plate 1 is provided with a supporting roller 2, the tail end of the upper bearing plate 3 is connected with a hand push rod 15, and the device can be driven to move by holding the hand push rod 15.
The upper bearing plate 3 is horizontally arranged above the lower bearing plate 1, the lifting assembly is connected between the upper bearing plate 3 and the lower bearing plate 1, and the lifting assembly is used for driving the upper bearing plate 3 to move up and down along the vertical direction. The lifting assembly comprises a lifting frame 5 and a hydraulic cylinder 4, the lower end of the hydraulic cylinder 4 is hinged with the middle part of the upper surface of the lower bearing plate 1, and the upper end of the hydraulic cylinder is hinged with the middle part of the lower surface of the upper bearing plate 3; the lifting frame 5 comprises two lifting frames which are respectively arranged at two sides of the hydraulic cylinder 4, the lower end of the lifting frame 5 is connected with the lower bearing plate 1, and the upper end of the lifting frame is connected with the upper bearing plate 3. The hydraulic cylinder 4 is connected with an operating rod 6 for adjusting the extension of the hydraulic cylinder 4, and the head end of the operating rod 6 extends to the outer side of the lower bearing plate 1. The length of the hydraulic cylinder 4 can be adjusted by pressing the operating rod 6, so that the height of the upper bearing plate 3 is adjusted, and the device can be conveniently adjusted to the required height to carry out hole-forming soil taking.
The drilling assembly is arranged on the upper bearing plate 3 and comprises a supporting seat 7, a sliding sleeve 9, a cutting cylinder 11 and a driving motor 10. The supporting seat 7 is fixed on the upper bearing plate 3, a horizontal sliding hole 8 (as shown in fig. 2) is arranged at the upper part of the supporting seat 7, the sliding sleeve 9 horizontally penetrates through the supporting seat 7 through the sliding hole 8, and the sliding sleeve can move or rotate along the sliding hole 8. The front end of the cutting cylinder 11 is open, the tail end is closed, the tail end of the cutting cylinder 11 is fixedly connected with the front end of the sliding sleeve, and the cutting cylinder 11 is coaxial with the sliding sleeve. In order to facilitate punching, the front end of the cutting cylinder 11 is fixedly connected with a circular cutting tooth 12, and the cutting tooth 12 protrudes forwards. The motor shaft of the driving motor 10 is fixedly connected with the tail end of the sliding sleeve 9. The upper bearing plate 3 is also provided with a moving component 16, and the moving component 16 is fixedly connected with the driving motor 10 and used for driving the driving motor 10 to reciprocate along the direction of the sliding sleeve 9 so as to drive the cutting cylinder 11 to punch holes and take soil.
Wherein the moving assembly 16 may take a variety of structural forms. For example: referring to fig. 1, a moving trolley is placed on an upper bearing plate 3, and a driving motor 10 is fixed on the top of the moving trolley. The movable trolley is provided with a horizontal screw rod, the screw rod is in threaded connection with the movable trolley, and one end of the screw rod is connected with the stepping motor. When the stepping motor drives the screw to rotate, the moving trolley moves forwards or backwards along the screw, so that the driving motor 10 is driven to move. The moving assembly 16 may also employ a lead screw arrangement, such as: the moving assembly 16 comprises two guide rails, a screw rod, a stepping motor, a supporting plate and a nut, the two guide rails are fixed at the top of the upper bearing plate 3 and are parallel to the sliding sleeve 9; the lead screw is arranged between the two guide rails, and the stepping motor is connected to the tail end of the lead screw. The supporting plate is connected with the guide rail in a sliding mode, the nut is fixedly connected to the bottom of the supporting plate and is in transmission connection with the lead screw, and the driving motor 10 is fixed to the supporting plate.
In order to pour out the land in the cutting cylinder 11 after the tunnel is formed, a hydraulic push rod 13 is fixedly connected in the inner cavity of the sliding sleeve 9 along the axis direction, an opening is formed in the center of the tail end of the cutting cylinder 11, and the front end of the hydraulic push rod 13 penetrates through the opening to extend into the cutting cylinder 11. A pushing disc 14 is fixedly connected to the front end of the hydraulic push rod 13, the diameter of the pushing disc 14 is slightly smaller than the outer diameter of the sliding sleeve 9, and when the hydraulic push rod 13 extends to the farthest end, the pushing disc 14 is flush with the front end of the cutting cylinder 11. An adjusting button of the hydraulic push rod 13 protrudes out of the sliding sleeve 9, and soil in the cutting cylinder 11 can be poured out by extending the hydraulic push rod 13 (as shown in figure 4).
The utility model discloses a use method as follows:
1. the device plate trolley is pushed to a corresponding position, the height of the device is controlled by adjusting the extension and contraction of the hydraulic cylinder 4 by pressing the operating rod 6, and the cutting cylinder 11 is aligned to and contacts with a position to be drilled;
2. starting the driving motor 10 to drive the cutting drum 11 to rotate; then, starting a stepping motor to drive the driving motor 10 to move forward, so that the cutting drum 11 rotates to enter the rock-soil body;
3. when the cutting drum 11 enters the marking position, the stepping motor is stopped, the plate trailer is started to back up until the cutting drum 11 is moved out of rock soil, and then the driving motor 10 is stopped;
4. at the moment, rock and soil mass is filled in the cutting cylinder 11, after the plate trailer is pushed to a waste soil storage position, the hydraulic push rod 13 is started, and the waste soil mass is pushed out of the cutting cylinder 11;
5. repeating the process until the requirement of the designed tunnel is met;
6. the operation process needs to be safe.
Claims (8)
1. A cave-forming device suitable for a soft rock-soil tunnel in a laboratory is characterized by comprising a lower bearing plate (1), a lifting assembly, an upper bearing plate (3) and a drilling assembly from bottom to top in sequence;
the bottom of the lower bearing plate (1) is provided with a supporting roller (2);
the upper bearing plate (3) is horizontally arranged above the lower bearing plate (1), the lifting assembly is connected between the upper bearing plate (3) and the lower bearing plate (1), and the lifting assembly is used for driving the upper bearing plate (3) to move up and down along the vertical direction;
the drilling assembly comprises a supporting seat (7), a sliding sleeve (9), a cutting cylinder (11) and a driving motor (10), the supporting seat (7) is fixed on the upper bearing plate (3), a horizontal sliding hole (8) is formed in the upper portion of the supporting seat (7), the sliding sleeve (9) horizontally penetrates through the supporting seat (7) through the sliding hole (8), and the sliding sleeve can move or rotate along the sliding hole (8); the front end of the cutting cylinder (11) is opened, the tail end of the cutting cylinder (11) is closed, the tail end of the cutting cylinder (11) is fixedly connected with the front end of the sliding sleeve, and the cutting cylinder (11) is coaxial with the sliding sleeve; a motor shaft of the driving motor (10) is fixedly connected with the tail end of the sliding sleeve (9); the upper bearing plate (3) is also provided with a moving component (16), and the moving component (16) is fixedly connected with the driving motor (10) and used for driving the driving motor (10) to reciprocate along the direction of the sliding sleeve (9).
2. The tunneling device suitable for the laboratory soft rock-soil tunnel according to claim 1, wherein the lifting assembly comprises a lifting frame (5) and a hydraulic cylinder (4), the lower end of the hydraulic cylinder (4) is hinged to the middle of the upper surface of the lower bearing plate (1), and the upper end of the hydraulic cylinder is hinged to the middle of the lower surface of the upper bearing plate (3); the lifting frame (5) comprises two lifting frames which are respectively arranged at two sides of the hydraulic cylinder (4), the lower end of the lifting frame (5) is connected with the lower bearing plate (1), and the upper end of the lifting frame is connected with the upper bearing plate (3).
3. The tunneling device suitable for the soft rock-soil tunnel in the laboratory according to claim 2, wherein the hydraulic cylinder (4) is connected with an operating rod (6) for adjusting the extension and retraction of the hydraulic cylinder (4), and the head end of the operating rod (6) extends to the outer side of the lower bearing plate (1).
4. The tunneling apparatus for laboratory soft rock-soil tunnels according to claim 1, wherein the moving assembly (16) comprises a guide rail, a lead screw, a stepping motor, a support plate and a nut; the two guide rails are fixed at the top of the upper bearing plate (3) and are parallel to the sliding sleeve (9); the lead screw is arranged between the two guide rails, and the stepping motor is connected to the tail end of the lead screw;
the support plate is connected with the guide rail in a sliding mode, the screw is fixedly connected to the bottom of the support plate and is in transmission connection with the lead screw, and the driving motor (10) is fixed to the support plate.
5. The tunneling device suitable for the laboratory soft rock-soil tunnel according to claim 1, characterized in that a hydraulic push rod (13) is fixedly connected in the inner cavity of the sliding sleeve (9) along the axial direction, an opening is arranged at the center of the tail end of the cutting cylinder (11), and the front end of the hydraulic push rod (13) penetrates through the opening and extends into the cutting cylinder (11); the front end of the hydraulic push rod (13) is fixedly connected with a pushing disc (14), and the diameter of the pushing disc (14) is slightly smaller than the outer diameter of the sliding sleeve (9).
6. The tunneling device for the laboratory soft rock-soil tunnel according to claim 5, wherein when the hydraulic push rod (13) extends to the farthest end, the pushing disc (14) is close to the outlet of the cutting drum (11).
7. The tunneling device for the laboratory soft rock-soil tunnel according to claim 5, wherein the cutting drum (11) is fixedly connected with a circular cutting tooth (12) at the front end, and the cutting tooth (12) protrudes forwards.
8. The tunneling device for the soft rock-soil tunnel in the laboratory according to claim 1, wherein a hand push rod (15) is connected to the tail end of the upper bearing plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123329574.8U CN217278331U (en) | 2021-12-28 | 2021-12-28 | Be applicable to soft ground tunnel cave-forming device in laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123329574.8U CN217278331U (en) | 2021-12-28 | 2021-12-28 | Be applicable to soft ground tunnel cave-forming device in laboratory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217278331U true CN217278331U (en) | 2022-08-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123329574.8U Active CN217278331U (en) | 2021-12-28 | 2021-12-28 | Be applicable to soft ground tunnel cave-forming device in laboratory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217278331U (en) |
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2021
- 2021-12-28 CN CN202123329574.8U patent/CN217278331U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220926 Address after: 730000 No. 365, East Democratic Road, Chengguan District, Gansu, Lanzhou Patentee after: NORTHWEST RESEARCH INSTITUTE Co.,Ltd. OF C R E C Patentee after: Southwest University of Science and Technology Patentee after: CHINA RAILWAY NO.9 GROUP Co.,Ltd. Address before: 730000 No. 365, East Democratic Road, Chengguan District, Gansu, Lanzhou Patentee before: NORTHWEST RESEARCH INSTITUTE Co.,Ltd. OF C R E C Patentee before: Southwest University of Science and Technology Patentee before: CHINA RAILWAY NO 9 GROUP CO.,LTD. DALIAN BRANCH |
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| TR01 | Transfer of patent right |