CN212931738U - Soil pressure sensor and heading machine - Google Patents
Soil pressure sensor and heading machine Download PDFInfo
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- CN212931738U CN212931738U CN202022352595.0U CN202022352595U CN212931738U CN 212931738 U CN212931738 U CN 212931738U CN 202022352595 U CN202022352595 U CN 202022352595U CN 212931738 U CN212931738 U CN 212931738U
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Abstract
The utility model provides a soil pressure sensor, which comprises a sensor shell, wherein the sensor shell is provided with a pressure measuring part, a pressure sensing film is arranged on the pressure measuring part, and a protection part is arranged on the pressure sensing film; an information acquisition mechanism is arranged in the sensor shell, and the pressure sensing diaphragm is connected with the information acquisition mechanism. The protective part is arranged on the pressure sensing diaphragm, so that the pressure sensing diaphragm is prevented from directly contacting rock sludge, the impact of the rock can be absorbed, and the damage of the pressure sensing diaphragm is reduced; the pressure sensing film is arranged in the safety port and has a certain distance with the outer end of the safety port, so that hard rocks are prevented from directly acting on the pressure sensing film, and the pressure sensing film is further protected; through the detachable connection of each part, the soil pressure sensor is of a modularized assembling structure, is convenient to overhaul, and can be modularized and replaced.
Description
Technical Field
The utility model relates to a sensor technical field especially relates to a soil pressure sensor and entry driving machine.
Background
In the tunneling process, the tunneling machine measures the water and soil pressure of the front stratum through a soil pressure sensor, and the control system collects the output of the sensor and displays the output on a display of a control room. And an operator judges the tunneling state of the tunneling machine by reading the pressure of the soil pressure sensor and adjusts the tunneling parameters in real time to ensure the stability of the stratum. The commonly used soil pressure sensor of the development machine mainly adopts a diaphragm to contact mud residue, and then the water and soil pressure is measured through pressure transmission.
Chinese utility model patent with publication number CN205373942U discloses a split type earth pressure sensor for shield machine, including diaphragm, oil charging pipeline, diaphragm capsule, pressure core and flange casing, the diaphragm is installed in the front end of diaphragm capsule, the pressure core is installed in the diaphragm capsule. Because the utility model discloses a diaphragm is installed in the front end of bellows for the pressure measurement in-process, diaphragm contact mud sediment leads to the diaphragm to damage very easily and causes the unable use of sensor.
SUMMERY OF THE UTILITY MODEL
To foretell technical problem, the utility model provides a soil pressure sensor for solve the easy problem of damaging of diaphragm contact mud sediment of the soil pressure sensor among the prior art.
In order to achieve the above purpose, the technical solution of the present invention is realized as follows:
a soil pressure sensor comprises a sensor shell, wherein a pressure measuring part is arranged on the sensor shell, a pressure sensing diaphragm and a pressure transmission medium are arranged on the pressure measuring part, and a protection part is arranged on the pressure sensing diaphragm; the sensor shell is internally provided with an information acquisition mechanism, and the pressure sensing diaphragm is connected with the information acquisition mechanism. The protection piece can avoid the pressure sensing diaphragm direct contact rock mud sediment or through the impact of protection piece absorption rock, reduces the damage of pressure sensing diaphragm.
Further, for better collection pressure information, the information acquisition mechanism includes pressure transmission medium and pressure cell, the pressure sensing diaphragm is connected with the pressure cell through pressure transmission medium.
Further, in order to further protect the pressure sensing diaphragm, the pressure measuring part is a safety opening arranged on the sensor shell, and the pressure sensing diaphragm is arranged in the safety opening.
Further, in order to improve the protection effect of the protection piece, the protection piece is an anti-collision rubber mat arranged on the pressure sensing film, and the anti-collision rubber mat covers one side of the pressure sensing film, which faces the outside of the safety opening.
Furthermore, in order to facilitate the disassembly and assembly of the soil pressure sensor, a connecting flange is arranged on the sensor shell and detachably connected with the heading machine through bolts.
Further, in order to prevent water from entering the soil pressure sensor, the sensor housing is hermetically connected with the heading machine.
Furthermore, in order to transmit the measured pressure signal, an information transmission mechanism is detachably arranged at one end, far away from the safety port, of the sensor shell, and the information transmission mechanism is connected with the information acquisition mechanism.
Further, for relaying and amplifying the measurement signal, the information transmission mechanism comprises a mounting seat detachably connected with the sensor shell, a relay unit is arranged in the mounting seat, and the relay unit is fixed in the mounting seat through a relay package; and the pressure measuring unit is connected with the relay unit through a relay line.
Further, in order to facilitate the closing and opening of the mounting seat, a top cover plate is detachably arranged at one end of the mounting seat, which is far away from the sensor shell, a cover plate circuit is arranged on the top cover plate, and the cover plate circuit is connected with the relay circuit; and the top cover plate is provided with a ventilation valve.
Furthermore, in order to facilitate connection of other electrical equipment, a cable end is detachably arranged at one end, away from the mounting seat, of the top cover plate, and a circuit in the cable end is detachably connected with the relay circuit.
The heading machine comprises the soil pressure sensor, and the soil pressure sensor is arranged on a rear partition plate of a soil bin of the heading machine.
The utility model has the advantages that: the protective part arranged on the pressure sensing film can prevent the pressure sensing film from directly contacting rock sludge, and the protective part can absorb the impact of rocks, so that the damage of the pressure sensing film is further reduced; the pressure sensing film is arranged in the safety port and has a certain distance with the outer end of the safety port, so that hard rocks are prevented from directly acting on the pressure sensing film, and the pressure sensing film is further protected; through the detachable connection of each part, the soil pressure sensor can be set into a modular assembled structure, is convenient to overhaul, and can be changed in a modular mode.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;
fig. 2 is a side view of fig. 1.
In the figure, 1-a rear partition board of a soil bin of a heading machine, 2-a sensor shell, 3-bolts, 4-a sealing ring, 5-a sealing ring installation groove, 6-a safety port, 7-a crash cushion, 8-a pressure sensing film, 9-a pressure transmitting medium, 10-a pressure measuring unit, 11-a relay circuit, 12-a relay unit, 13-a relay packaging block, 14-a top cover plate, 15-a cable end, 16-an output circuit, 17-a vent valve, 18-a mounting seat sealing element, 19-a mounting seat, 20-bolt holes, 21-a dismounting hole, 22-a vent hole and 23-a connecting flange.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in fig. 1 and 2, in embodiment 1, the soil pressure sensor of the present invention includes a sensor housing 2, the sensor housing 2 is provided with a pressure measuring portion and an information collecting mechanism, the pressure measuring portion is provided with a pressure sensing diaphragm 8, and the pressure sensing diaphragm 8 is provided with a protection member; the pressure sensing film 8 is connected with an information acquisition mechanism. Specifically, the pressure measuring part is arranged at the front end of the sensor shell 2, the information acquisition mechanism is arranged inside the sensor shell 2, the pressure measuring part is in contact with mud residues in the using process, and the pressure sensing diaphragm 8 is arranged at the pressure measuring part and transmits the sensed soil pressure to the information acquisition mechanism; in the tunneling process of the heading machine, the protective part arranged on the pressure sensing membrane 8 can prevent the pressure sensing membrane 8 from directly contacting rock mud residues and absorb the impact action of rocks through the protective part, and the damage of the pressure sensing membrane 8 is reduced.
Further, as shown in fig. 1, the information acquisition mechanism includes a pressure cell 10 and a pressure transmission medium 9, the pressure cell 10 and the pressure transmission medium 9 are disposed inside the sensor housing 2, and the pressure transmission medium 9 is located between the pressure measurement portion and the pressure cell 10, the pressure transmission medium 9 is a medium substance for transmitting pressure in the prior art, and may be gas, liquid and solid, the pressure transmission medium of liquid is adopted in this embodiment, the pressure transmission medium 9 is used for transmitting the soil pressure sensed by the pressure sensing diaphragm 8 to the pressure cell through the pressure transmission medium 9, and the pressure cell 10 therein may be an independent pressure measurement cell or a standard mature pressure sensor.
Further, as shown in fig. 1, the pressure measuring portion is a safety opening 6 arranged on the sensor housing 2, and the pressure sensing diaphragm 8 is arranged in the safety opening 6, so that the pressure sensing diaphragm 8 has a certain distance from an outer port of the safety opening 6, hard rocks are prevented from directly acting on the pressure sensing diaphragm 8, and the possibility of damage to the pressure sensing diaphragm 8 is further reduced.
Further, as shown in fig. 1, the protection piece is the crashproof cushion 7 of setting on pressure sensing diaphragm 8, and crashproof cushion 7 covers on pressure sensing diaphragm 8 towards the outside one side of safe mouthful 6, can keep apart pressure sensing diaphragm 8 contact rock comprehensively, and crashproof cushion 7 has elasticity simultaneously, even excavate the hard rock in storehouse and sensor tip direct contact, and crashproof cushion 7 also can absorb the impact of rock, reduces the damage of pressure sensing diaphragm 8.
Further, as shown in fig. 1 and 2, a connecting flange 23 is arranged on the sensor housing 2, and the connecting flange 23 is detachably connected with the heading machine through bolts 3. The connecting flange 23 is evenly provided with a plurality of bolt holes 20, specifically, a sensor mounting hole for mounting the sensor shell 2 is formed in the soil bin rear partition plate 1 of the heading machine, when the sensor shell 2 is mounted, the sensor shell 2 extends into the sensor mounting hole, the connecting flange 23 is tightly attached to the outer side surface of the soil bin rear partition plate 1 of the heading machine, the connecting flange 23 is fixedly connected with the soil bin rear partition plate 1 of the heading machine through bolts 3 penetrating into the bolt holes 20 of the connecting flange 23, so that the sensor shell 2 is detachably connected with the heading machine, and the outer side of the sensor shell 2 is matched with the wall of the sensor mounting hole.
Further, as shown in fig. 1, the sensor housing 2 is also hermetically connected with the heading machine, a sealing ring mounting groove 5 is arranged on the matching surface of the sensor housing 2 matched with the sensor mounting hole, the sealing ring mounting groove 5 is circumferentially arranged on the matching surface of the sensor housing 2 and is close to the front end of the soil pressure sensor, and a sealing ring 4 is arranged in the sealing ring mounting groove 5, so that the soil pressure sensor is hermetically connected with the soil bin rear partition plate 1 of the heading machine, and the soil in front of the soil pressure sensor is prevented from entering the sensor mounting area.
Further, as shown in fig. 1, an information transmission mechanism is detachably disposed at one end of the sensor housing 2, which is far away from the safety port 6, and the information transmission mechanism is connected with the information acquisition mechanism, so that transmission of measurement signals is facilitated, and processing of the measurement signals is facilitated.
Further, as shown in fig. 1, the information transmission mechanism includes a mounting seat 19 detachably connected to the sensor housing 2, the mounting seat 19 is disposed at an end of the sensor housing 2 away from the safety vent 6, a relay unit 12 is disposed in the mounting seat 19, the relay unit 12 is fixed in the mounting seat 19 through a relay package block 13, the relay unit 12 is connected to the pressure measuring unit 10 through a relay line 11, and a plug is disposed at an end of the relay line 11 to facilitate detachable connection with the relay unit 12 or a line on the relay unit 12, where the plug is a common plug for line connection in the prior art. A cavity is arranged in the mounting seat 19, the relay unit 12 is fixed in the relay packaging block 13, the relay packaging block 13 is arranged in the cavity of the mounting seat 19, and the relay line 11 penetrates through the relay packaging block 13 and is connected with the relay unit 12; the relay unit 12 may be a circuit connection component or a circuit board for processing a measurement signal, the relay package block 13 may be an insulating material such as rubber or plastic, and the relay unit 12 is packaged by the relay package block 13, and the relay unit 12 is installed in the cavity after being sealed by the relay package block 13, so as to facilitate the fixing of the relay unit 12 and the protection of the relay unit 12, and simultaneously prevent moisture in the air from entering the interior of the relay unit 12 to cause the accuracy of the sensor to decrease or even damage.
Furthermore, a top cover plate 14 is detachably arranged at one end, away from the sensor housing 2, of the mounting seat 19, a cavity is arranged in the sensor housing 2, the pressure transmission medium 9 and the pressure measurement unit 10 are both located in the cavity, the front end of the cavity is a safety port, the rear end of the cavity is used for connecting the mounting seat 19, the mounting seat 19 is in bolted connection or threaded connection or plug-in connection or buckle connection with the rear end of the cavity, and the connection position of the mounting seat 19 and the sensor housing 2 is in sealed connection; the relay line 11 is also connected to an end of the relay unit 12 away from the sensor housing 2, and the top cover 14 is provided with a through hole for the relay line 11 to pass through.
Further, as shown in fig. 1 and 2, the end of the mounting seat 19 away from the sensor housing 2 is detachably provided with a top cover plate 14. One side of the cavity in the mounting seat 19, which is far away from the pressure measuring unit 2, is an open port, the top cover plate 14 is hermetically connected in the open port, the top cover plate 14 is in bolt connection or threaded connection or plug-in connection or buckle connection with the mounting seat 19, a mounting seat sealing element 18 is arranged on the connecting surface of the top cover plate 14 and the mounting seat 19, the mounting seat sealing element 18 is an elastic sealing ring or a waterproof sealing ring or other waterproof sealing materials, and the cavity in the mounting seat 19 can be sealed after the top cover plate 14 is connected; the top cover plate 14 is provided with a cover plate circuit which is detachably connected to the relay circuit 11 extending out of the relay unit 12 by a plug, which is a plug commonly used for circuit or cable connection in the prior art. In addition, the top cover plate 14 is also provided with a vent hole 22, and a vent valve 17 is arranged in the vent hole 22 to ensure the reference pressure of the sensor.
Further, as shown in fig. 1, one end of the top cover plate 14 away from the mounting seat 19 is provided with a cable end 15, the cable end 15 is provided with an output line, which is convenient for the soil pressure sensor to be connected with other electrical devices, the cable end 15 is detachably connected with the top cover plate 14, the cable end 15 is in bolt connection or thread connection or plug connection or buckle connection with the top cover plate 14, a line in the cable end 15 is detachably connected with a cover plate line in the top cover plate 14 through a plug connector, the plug connector is a plug connector commonly used for line or cable connection in the prior art, the line in the cable end 15 can also be detachably connected with the cover plate line in the top cover plate 14 through a contact connector, and the line or cable connection in the prior art is commonly used for contact connector. The detachable connection between the parts enables the soil pressure sensor to be arranged into a modular assembled structure, so that the maintenance is convenient, and the modular replacement can be realized.
Embodiment 2, a heading machine comprising the soil pressure sensor according to embodiment 1, the soil pressure sensor being provided on a rear bulkhead 1 of a soil bin of the heading machine,
embodiment 3 is different from embodiment 1 in that a temperature sensing diaphragm is further provided in the safety vent, and a temperature sensor is further provided on the pressure measuring unit 10, and the temperature sensing diaphragm is connected to the temperature sensor.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. The soil pressure sensor comprises a sensor shell (2), and is characterized in that a pressure measuring part is arranged on the sensor shell (2), a pressure sensing diaphragm (8) is arranged on the pressure measuring part, and a protection part is arranged on the pressure sensing diaphragm (8); an information acquisition mechanism is arranged in the sensor shell (2), and the pressure sensing film (8) is connected with the information acquisition mechanism.
2. The soil pressure sensor according to claim 1, wherein the information acquisition mechanism comprises a pressure transmitting medium (9) and a pressure measuring unit (10), and the pressure sensing diaphragm (8) is connected with the pressure measuring unit (10) through the pressure transmitting medium (9).
3. The soil pressure sensor according to claim 2, wherein the pressure measuring portion is a safety vent (6) provided on the sensor housing (2), and the pressure sensing diaphragm (8) is provided in the safety vent (6).
4. The soil pressure sensor according to claim 3, wherein the guard is a crash pad (7) provided on the pressure sensing diaphragm (8), and the crash pad (7) covers a side of the pressure sensing diaphragm (8) facing the outside of the safety vent (6).
5. The soil pressure sensor according to any one of claims 2 to 4, wherein the sensor housing (2) is provided with a connecting flange (23), and the connecting flange (23) is detachably connected with the heading machine through a bolt (3).
6. Soil pressure sensor according to claim 5, characterized in that the sensor housing (2) is sealingly connected to a heading machine.
7. The soil pressure sensor according to claim 2, 3, 4 or 6, wherein an information transmission mechanism is detachably arranged at one end of the sensor shell (2) far away from the safety port (6), and the information transmission mechanism is connected with the information acquisition mechanism.
8. The soil pressure sensor according to claim 7, wherein the information transmission mechanism comprises a mounting seat (19) detachably connected with the sensor housing (2), a relay unit (12) is arranged in the mounting seat (19), and the relay unit (12) is fixed in the mounting seat (19) through a relay package (13); the pressure measuring unit (10) is connected with the relay unit (12) through a relay line (11).
9. The soil pressure sensor according to claim 8, wherein a top cover plate (14) is detachably arranged at one end of the mounting seat (19) far away from the sensor shell (2), a cover plate circuit is arranged on the top cover plate (14), and the cover plate circuit is connected with the relay circuit (11); and the top cover plate (14) is provided with a ventilation valve (22).
10. The soil pressure sensor according to claim 9, wherein the end of the top cover plate (14) far away from the mounting seat (19) is detachably provided with a cable head (15), and the circuit in the cable head (15) is detachably connected with the trunk circuit (11).
11. A heading machine, characterized by comprising the soil pressure sensor according to claims 1-10, wherein the soil pressure sensor is arranged on a rear bulkhead (1) of a soil bin of the heading machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022352595.0U CN212931738U (en) | 2020-10-21 | 2020-10-21 | Soil pressure sensor and heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022352595.0U CN212931738U (en) | 2020-10-21 | 2020-10-21 | Soil pressure sensor and heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212931738U true CN212931738U (en) | 2021-04-09 |
Family
ID=75311516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022352595.0U Active CN212931738U (en) | 2020-10-21 | 2020-10-21 | Soil pressure sensor and heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212931738U (en) |
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2020
- 2020-10-21 CN CN202022352595.0U patent/CN212931738U/en active Active
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