A hydrogeological water injection test equipment for geological exploration

Abstract

The present invention relates to the technical field of water injection test, specifically a hydrogeological water injection test equipment for geological exploration, including a frame, and also including: a water supply pressurization structure connected to the frame; a hanging structure connected to a box body; a plugging test structure connected to the hanging structure, the plugging test structure includes a hanging frame, the hanging frame is fixedly connected to an outer pipe, the outer pipe is connected to a water supply part, a water outlet is opened on the outer surface of the outer pipe, a plugging piece is fixedly installed in the outer pipe, the plugging piece is fixedly connected to an inner pipe, the outer pipe is connected to a net soil part, the outer pipe is connected to a locking part, and the locking part is movably connected to an air cushion plugging part. The present invention uses an expanded air cushion plugging part to plug in a borehole, so that the water falling into the borehole can contact the soil layer or rock layer to be detected in a directional manner, during which the net soil part intercepts soil and rocks. The present invention accurately performs water injection detection tests on the soil layer or rock layer to be detected and further improves the accuracy of the detection test by intercepting soil and rocks.

Description

Technical Field

[0001] The invention relates to the technical field of water injection testing, in particular to hydrogeological water injection testing equipment for geological exploration. Background Art

[0002] Hydrogeological tests are tests conducted to obtain rock (soil) hydrogeological parameters, identify hydrogeological conditions and conduct quantitative research on groundwater. Its task is to provide basic data for estimating the amount of water inflow from mines (pits), and for the prevention and control of groundwater in ore deposits and their comprehensive utilization. Hydrogeological tests are divided into field hydrogeological tests and indoor hydrogeological tests. Field hydrogeological tests mainly include pumping tests, water release tests, water injection tests, water pressure tests, water seepage tests, groundwater equilibrium field tests, interconnection tests, water quality dispersion tests, etc.

[0003] The water injection test is to inject water into the borehole at a certain flow rate to raise the water level in the hole, stabilize the water level and maintain it for a certain period of time, so as to obtain hydrogeological parameters and other information. Its working steps and test methods are basically the same as those of the pumping test. In the prior art, the water injection test generally uses test equipment to directly inject water into the borehole and measure the water level. This makes it impossible for the existing equipment to perform water injection tests on rock or soil layers at a certain depth. When the rock and soil are loose and prone to collapse, the rock and soil falling into the water will cause the water level to rise, making it impossible to perform water injection tests at a certain depth. At the same time, the test accuracy is reduced, which may cause a large test error and affect subsequent research. Summary of the invention

[0004] The purpose of the present invention is to provide a hydrogeological water injection test equipment for geological exploration to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A hydrogeological water injection test device for geological exploration, comprising a frame and:

[0007] A water supply pressurizing structure connected to the frame, the water supply pressurizing structure comprising a box body fixedly connected to the frame, the box body being connected to a pressurized gas transmission part, and the box body being connected to a water supply part;

[0008] A hanging structure connected to the box;

[0009] A plugging test structure connected to the hanging structure, the plugging test structure includes a hanging frame connected to the hanging structure, the hanging frame is fixedly connected to an outer tube, the outer tube is connected to a water supply part, a drain port is provided on the outer surface of the outer tube, a plugging piece is fixedly installed in the outer tube, the plugging piece is arranged below the drain port, the plugging piece is fixedly connected to an inner tube, the inner tube is fixedly connected to a pressurized gas transmission part, the outer tube is connected to a net soil part, the net soil part is used to intercept falling soil and rocks, the net soil part is connected to the hanging frame, the outer tube is connected to a locking part, the locking part is movably connected to an air cushion plugging part, the air cushion plugging part is movably connected to a docking joint, the docking joint is connected to the outer tube through a branch pipe, a limiting sleeve movably connected to the air cushion plugging part is fixedly installed at the lower end of the outer tube, the outer tube is fixedly connected to a single-arm frame, the single-arm frame is fixedly connected to an ultrasonic liquid level probe.

[0010] As a further improvement of the present invention: the pressurized air delivery part includes a first motor fixedly installed in a box body, the output shaft of the first motor is fixedly connected to a first tube winding wheel, a first hose is wound around the first tube winding wheel, one end of the first hose is fixedly connected to the inner tube, and the other end of the first hose is fixedly connected to a pressurized air pump fixedly connected to the box body.

[0011] As a further improvement of the present invention: the water supply part includes a second motor fixedly installed in the box body, the output shaft of the second motor is fixedly connected to the second pipe winding wheel, the second pipe winding wheel is wound with a second hose, one end of the second hose is fixedly connected to the outer tube, the other end of the second hose is fixedly connected to the flow meter, and the flow meter is fixedly connected to a water pump fixedly connected to the frame.

[0012] As a further improvement of the present invention: the hanging structure includes two groups of motor frames fixedly connected to the box body, the motor frames are fixedly connected to a third motor, the output shaft of the third motor is fixedly connected to a double-grooved wheel, two groups of pull wires are wound around the double-grooved wheel, the pull wires are connected to a driven wire wheel rotatably connected to the motor frames, and the pull wires are fixedly connected to the hanging frame.

[0013] As a further improvement scheme of the present invention: the net soil part includes a fixed sleeve fixedly connected to the outer tube, the fixed sleeve is fixedly connected with a plurality of groups of elastic springs arranged along the circumferential direction, an interception cloth is fixedly installed between two adjacent groups of elastic springs, the interception cloth is fixedly connected to the fixed sleeve, the lifting frame is fixedly connected with a plurality of groups of active telescopic rods, the moving end of the active telescopic rod is fixedly connected with a hinged head slidably connected to the outer tube, the hinged head is hinged with a plurality of groups of hinged frames, the hinged frame is hinged with a hinged seat fixedly connected to the elastic spring, and the hinged seat is fixedly connected with a pressure sensing probe.

[0014] As a further improvement scheme of the present invention: the locking part includes a threaded sleeve fixedly connected to the outer tube, the threaded sleeve is threadedly connected to a knob sleeve, the knob sleeve is rotatably connected to a synchronous frame, the outer tube is fixedly connected to four groups of limit frames, the limit frames are hinged to an extrusion frame, one end of the extrusion frame is movably connected to the air cushion sealing part, the other end of the extrusion frame is fixedly connected to two groups of protruding shafts, the protruding shaft is slidably connected to a hollow sleeve, and the hollow sleeve is fixedly connected to the synchronous frame.

[0015] As a further improvement scheme of the present invention: the air cushion sealing part includes a plug-in frame movably connected to the limit sleeve, the plug-in frame is fixedly connected to a groove frame movably connected to the extrusion frame, the plug-in frame is fixedly connected to an airbag holster, the plug-in frame is fixedly connected to a docking tube movably connected to the docking head, the plug-in frame is fixedly connected to multiple groups of guide sleeves, the guide sleeve is slidably connected to a radial extension frame, the end face of the radial extension frame away from the guide sleeve abuts against the inner wall of the airbag holster, the guide sleeve is slidably connected to two groups of end face extrusion frames, and a reset spring is installed between the end face extrusion frame and the guide sleeve.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The hoisting structure places the hoisting frame into the drilled hole, so that the plugging test structure falls along the drilled hole. After the air cushion plugging part reaches the predetermined height, the pressurized gas transmission part performs gas transmission operation on the inner pipe, and then the high-pressure gas enters the branch pipe through the outer pipe, and then the high-pressure gas enters the air cushion plugging part through the joint, so that the air cushion plugging part expands and fits the borehole wall, and then the water supply part supplies water to the outer pipe, and the water flows through the drain port and falls on the air cushion plugging part. With the continuous water supply of the water supply part, the water level on the air cushion plugging part continues to rise. After a period of time, the water supply part stops supplying water, and the ultrasonic liquid level probe performs non-contact monitoring of the water level to monitor the water level change, so as to carry out water injection detection test on the soil or rock layer of a certain depth. During the water injection detection test, the net soil part self-expands to intercept the soil and rocks that collapse and fall in the hole, and prevent the soil and rocks that fall above the net soil part from entering the water above the air cushion plugging part, thereby improving the accuracy of the water injection detection test. The present invention uses a hanging structure to hang the plugging test structure into the borehole, and then uses an expanded air cushion plugging part to plug the borehole, so that the water falling into the borehole can contact the soil layer or rock layer to be tested in a directional manner. During this period, the net soil part intercepts soil and rocks to prevent soil and rocks from falling into the test water. The present invention accurately performs water injection test on the soil layer or rock layer to be tested and further improves the accuracy of the test test by intercepting soil and rocks. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 A schematic diagram of a three-dimensional structure from another viewing angle of the present invention;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the plugging test structure of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the plugging test structure of the present invention;

[0022] Figure 5 For the present invention Figure 1 A local enlarged schematic diagram of the middle A;

[0023] Figure 6 For the present invention Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 7 It is a cross-sectional view of the outer tube, the drain port, the plugging piece and the inner tube of the present invention cooperating with each other;

[0025] Figure 8 It is a partial structural schematic diagram of the air cushion sealing part of the present invention;

[0026] Fig. 9 It is a schematic diagram of the internal structure of the guide sleeve, radial extension frame and end face extrusion frame cooperating with each other in the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the knob cover of the present invention;

[0028] Fig.11 It is a three-dimensional structural schematic diagram of the synchronous frame of the present invention;

[0029] Fig.12 It is a structural schematic diagram of the water supply pressurization structure of the present invention.

[0030] In the figure: 1. frame; 2. water supply pressurization structure; 3. box; 4. pressurized gas transmission part; 5. water supply part; 6. hanging structure; 7. plugging test structure; 8. hanging frame; 9. outer pipe; 10. drain port; 11. plugging plate; 12. inner pipe; 13. net soil part; 14. locking part; 15. air cushion plugging part; 16. joint; 17. branch pipe; 18. limit sleeve; 19. single arm frame; 20. ultrasonic liquid level probe; 21. first motor; 22. first pipe wheel; 23. first hose; 24. pressurized air pump; 25. second motor; 26. second pipe wheel; 27. second hose; 28. flow meter ; 29. ​​Water pump; 30. Motor frame; 31. The third motor; 32. Double groove wheel; 33. Pull wire; 34. Driven line wheel; 35. Fixed sleeve; 36. Elastic spring; 37. Intercepting cloth; 38. Active telescopic rod; 39. Articulated head; 40. Articulated frame; 41. Articulated seat; 42. Pressure sensing probe; 43. Threaded sleeve; 44. Knob sleeve; 45. Synchronous frame; 46. Limiting frame; 47. Extrusion frame; 48. Plug-in frame; 49. Protruding shaft; 50. Hollow sleeve; 51. Airbag leather case; 52. Butt pipe; 53. Guide sleeve; 54. Radial extension frame; 55. End face extrusion frame; 56. Slot frame. DETAILED DESCRIPTION

[0031] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0032] Example 1, see Figures 1 to 12 As shown, a hydrogeological water injection test equipment for geological exploration includes a frame 1, the frame 1 is connected to a master control module, the master control module includes a shell fixedly connected to the frame 1, a microcomputer and a wireless communication module are installed in the shell, and also includes:

[0033] A water supply pressurizing structure 2 connected to the frame 1, the water supply pressurizing structure 2 comprises a box body 3 fixedly connected to the frame 1, the box body 3 is connected to a pressurized gas delivery part 4, and the box body 3 is connected to a water supply part 5;

[0034] A hanging structure 6 connected to the box 3;

[0035] A plugging test structure 7 connected to the hanging structure 6, the plugging test structure 7 includes a hanging frame 8 connected to the hanging structure 6, the hanging frame 8 is fixedly connected to an outer tube 9, the outer tube 9 is connected to the water supply part 5, a drain port 10 is provided on the outer surface of the outer tube 9, a plugging piece 11 is fixedly installed in the outer tube 9, the plugging piece 11 is arranged below the drain port 10, the plugging piece 11 is fixedly connected to an inner tube 12, the inner tube 12 is fixedly connected to the pressurized gas transmission part 4, the outer tube 9 is connected to a net soil part 13, The net soil part 13 is used to intercept falling soil and rocks. The net soil part 13 is connected to the lifting frame 8. The outer tube 9 is connected with a locking part 14. The locking part 14 is movably connected with an air cushion sealing part 15. The air cushion sealing part 15 is movably connected with a docking joint 16. The docking joint 16 is connected with the outer tube 9 through a branch pipe 17. A limiting sleeve 18 movably connected to the air cushion sealing part 15 is fixedly installed at the lower end of the outer tube 9. The outer tube 9 is fixedly connected with a single-arm frame 19. The single-arm frame 19 is fixedly connected with an ultrasonic liquid level probe 20.

[0036] The lifting structure 6 puts the lifting frame 8 into the drilled hole, so that the plugging test structure 7 falls along the drilled hole. After the air cushion plugging part 15 falls to a predetermined height, the pressurized gas delivery part 4 performs gas delivery operation on the inner tube 12, and then the high-pressure gas enters the branch pipe 17 through the outer tube 9, and then the high-pressure gas enters the air cushion plugging part 15 through the joint 16, so that the air cushion plugging part 15 expands and fits the drilled hole wall, and then the water supply part 5 supplies water to the outer tube 9, and the water flows through the drain port 10 and falls on the air cushion plugging part 15. The water supply of the water supply part 5 is continuous, and the water level on the air cushion plugging part 15 continues to rise. After a period of time, the water supply part 5 stops supplying water, and the ultrasonic liquid level probe 20 performs non-contact monitoring of the water level to monitor the water level change, so as to perform a water injection test on the soil layer or rock layer of a certain depth. During the water injection test, the net soil part 13 is self-expanded to intercept the soil and rocks that collapse and fall in the hole, and prevent the soil and rocks that fall above the net soil part 13 from entering the water above the air cushion plugging part 15, thereby improving the accuracy of the water injection test. The present invention uses a hanging structure 6 to hang the plugging test structure 7 into the borehole, and then uses the expanded air cushion plugging part 15 to block the borehole, so that the water falling into the borehole contacts the soil layer or rock layer to be tested in a directional manner. During this period, the net soil part 13 intercepts soil and rocks to prevent soil and rocks from falling into the test water. The present invention accurately performs a water injection test on the soil layer or rock layer to be tested and further improves the accuracy of the test by intercepting soil and rocks.

[0037] In one case of this embodiment, the pressurized gas delivery unit 4 includes a first motor 21 fixedly installed in the box body 3, the output shaft of the first motor 21 is fixedly connected to a first tube winding wheel 22, a first hose 23 is wound around the first tube winding wheel 22, one end of the first hose 23 is fixedly connected to the inner tube 12, and the other end of the first hose 23 is fixedly connected to a pressurized air pump 24 fixedly connected to the box body 3. The first motor 21 drives the first tube winding wheel 22 to rotate, so that the first tube winding wheel 22 releases the first hose 23, and the pressurized air pump 24 performs high-pressure air supply operation on the inner tube 12 through the first hose 23.

[0038] In one case of this embodiment, the water supply unit 5 includes a second motor 25 fixedly installed in the housing 3, the output shaft of the second motor 25 is fixedly connected to a second pipe reel 26, a second hose 27 is wound around the second pipe reel 26, one end of the second hose 27 is fixedly connected to the outer tube 9, the other end of the second hose 27 is fixedly connected to a flow meter 28, and the flow meter 28 is fixedly connected to a water pump 29 fixedly connected to the frame 1. The second motor 25 drives the second pipe reel 26 to rotate, so that the second pipe reel 26 releases the second hose 27, the water inlet pipe of the water pump 29 is externally connected to the water suction pipe, and then the water pump 29 performs a pumping operation and presses the water flow into the second hose 27, and then the second hose 27 guides the water flow into the outer tube 9, thereby performing a water supply operation on the outer tube 9.

[0039] In one case of this embodiment, the hanging structure 6 includes two groups of motor frames 30 fixedly connected to the box body 3, the motor frames 30 are fixedly connected to the third motor 31, the output shaft of the third motor 31 is fixedly connected to the double groove wheel 32, the double groove wheel 32 is wound with two groups of pull wires 33, the pull wires 33 are connected to the driven wire wheel 34 rotatably connected to the motor frame 30, and the pull wires 33 are fixedly connected to the hanging frame 8. The third motor 31 is used to drive the double groove wheel 32 to rotate, and the double groove wheel 32 is used to wind the pull wire 33. As the pull wire 33 is released by the double groove wheel 32, the hanging frame 8 moves downward under the action of gravity.

[0040] In one case of the present embodiment, the net soil part 13 includes a fixed sleeve 35 fixedly connected to the outer tube 9, the fixed sleeve 35 is fixedly connected with a plurality of groups of elastic springs 36 arranged along the circumferential direction, an interception cloth 37 is fixedly installed between two adjacent groups of elastic springs 36, the interception cloth 37 is an elastic cloth, and the interception cloth 37 is fixedly connected to the fixed sleeve 35, the lifting frame 8 is fixedly connected with a plurality of groups of active telescopic rods 38, the moving end of the active telescopic rod 38 is fixedly connected with a hinged head 39 slidably connected to the outer tube 9, the hinged head 39 is hinged with a plurality of groups of hinged frames 40, the hinged frame 40 is hinged with a hinged seat 41 fixedly connected to the elastic spring 36, and the hinged seat 41 is fixedly connected with a pressure sensing probe 42. The active telescopic rod 38 is used to drive the articulated head 39 to move. The articulated head 39 drives the articulated frame 40 to move, so that the articulated frame 40 drives the articulated seat 41 to move, and the articulated seat 41 drives the elastic spring 36 to bend, thereby adjusting the deployment area of ​​the interception cloth 37. The interception cloth 37 is used to intercept and carry fallen soil and rocks.

[0041] In one case of the present embodiment, the locking portion 14 includes a threaded sleeve 43 fixedly connected to the outer tube 9, a thread is provided on the outer surface of the threaded sleeve 43, the threaded sleeve 43 is threadedly connected to a knob sleeve 44, the knob sleeve 44 is rotatably connected to a synchronous frame 45, the outer tube 9 is fixedly connected to four groups of limit frames 46, the limit frames 46 are hinged to an extrusion frame 47, one end of the extrusion frame 47 is movably connected to the air cushion sealing portion 15, the other end of the extrusion frame 47 is fixedly connected to two groups of protruding shafts 49, the protruding shaft 49 is slidably connected to a hollow sleeve 50, and the hollow sleeve 50 is fixedly connected to the synchronous frame 45. Rotate the knob sleeve 44 so that the knob sleeve 44 rotates along the threaded sleeve 43, during which the knob sleeve 44 drives the synchronous frame 45 to move, the synchronous frame 45 drives the hollow sleeve 50 to move, the hollow sleeve 50 drives the protruding shaft 49 to move, and the protruding shaft 49 drives the extrusion frame 47 to rotate, thereby adjusting the position of the extrusion frame 47. The extrusion frame 47 limits the movement of the air cushion sealing part 15 by inserting the air cushion sealing part 15.

[0042] Embodiment 2, based on embodiment 1, refer to Figure 1 , Figure 2 , Figure 3 , Figure 8 , Fig. 9The air cushion blocking portion 15 includes a plug-in frame 48 movably connected to the limit sleeve 18, the plug-in frame 48 is fixedly connected to a groove frame 56 movably connected to the extrusion frame 47, the plug-in frame 48 is fixedly connected to an airbag leather cover 51, the plug-in frame 48 is fixedly connected to a docking pipe 52 movably connected to the docking head 16, the plug-in frame 48 is fixedly connected to multiple groups of guide sleeves 53, the guide sleeve 53 is slidably connected to a radial extension frame 54, the end face of the radial extension frame 54 away from the guide sleeve 53 abuts against the inner wall of the airbag leather cover 51, the guide sleeve 53 is slidably connected to two groups of end face extrusion frames 55, and a reset spring is installed between the end face extrusion frame 55 and the guide sleeve 53. After the groove frame 56 is separated from the extrusion frame 47, the plug-in frame 48 is pulled out to separate from the limit sleeve 18, and the docking tube 52 is separated from the docking head 16. As the gas enters the airbag holster 51 through the docking tube 52, the volume of the airbag holster 51 expands, so that the airbag holster 51 fits the borehole wall. When the airbag holster 51 is driven by water pressure, the airbag holster 51 presses the end face extrusion frame 55, and the end face extrusion frame 55 presses the air in the guide sleeve 53, so that the air in the guide sleeve 53 pushes the radial extension frame 54 to move, so that the radial extension frame 54 presses the inner wall of the airbag holster 51, so that the outside of the airbag holster 51 is further closely fitted to the borehole wall, thereby preventing water from flowing out between the airbag holster 51 and the borehole wall.

[0043] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention.

Claims

1. A hydrogeological water injection test equipment for geological exploration, comprising a frame, characterized in that: Also includes: A water supply pressurizing structure connected to the frame, the water supply pressurizing structure comprising a box body fixedly connected to the frame, the box body being connected to a pressurized gas transmission part, and the box body being connected to a water supply part; A hanging structure connected to the box; A plugging test structure connected to the hanging structure, the plugging test structure includes a hanging frame connected to the hanging structure, the hanging frame is fixedly connected to an outer tube, the outer tube is connected to a water supply part, a drain port is provided on the outer surface of the outer tube, a plugging piece is fixedly installed in the outer tube, the plugging piece is arranged below the drain port, the plugging piece is fixedly connected to an inner tube, the inner tube is fixedly connected to a pressurized gas transmission part, the outer tube is connected to a net soil part, the net soil part is used to intercept falling soil and rocks, the net soil part is connected to the hanging frame, the outer tube is connected to a locking part, the locking part is movably connected to an air cushion plugging part, the air cushion plugging part is movably connected to a docking joint, the docking joint is connected to the outer tube through a branch pipe, a limiting sleeve movably connected to the air cushion plugging part is fixedly installed at the lower end of the outer tube, the outer tube is fixedly connected to a single-arm frame, the single-arm frame is fixedly connected to an ultrasonic liquid level probe, the locking part includes a screw fixedly connected to the outer tube The cam is connected with the air bag casing, and the cam casing is connected with the air bag casing, and the cam casing is connected with the air bag casing, and the cam casing is connected with the air bag casing.

2. A hydrogeological water injection test equipment for geological exploration according to claim 1, characterized in that: The pressurized air delivery unit includes a first motor fixedly installed in a box body, the output shaft of the first motor is fixedly connected to a first tube winding wheel, a first hose is wound around the first tube winding wheel, one end of the first hose is fixedly connected to an inner tube, and the other end of the first hose is fixedly connected to a pressurized air pump fixedly connected to the box body.

3. The hydrogeological water injection test equipment for geological exploration according to claim 1, characterized in that: The water supply part includes a second motor fixedly installed in the box body, the output shaft of the second motor is fixedly connected to the second pipe winding wheel, the second pipe winding wheel is wound with a second hose, one end of the second hose is fixedly connected to the outer pipe, the other end of the second hose is fixedly connected to the flow meter, and the flow meter is fixedly connected to a water pump fixedly connected to the frame.

4. The hydrogeological water injection test equipment for geological exploration according to claim 1, characterized in that: The hanging structure includes two groups of motor frames fixedly connected to the box body, the motor frames are fixedly connected to a third motor, the output shaft of the third motor is fixedly connected to a double-grooved wheel, two groups of pull wires are wound around the double-grooved wheel, the pull wires are connected to a driven wire wheel rotatably connected to the motor frames, and the pull wires are fixedly connected to the hanging frame.

5. The hydrogeological water injection test equipment for geological exploration according to claim 1, characterized in that: The net soil part includes a fixed sleeve fixedly connected to the outer tube, the fixed sleeve is fixedly connected with a plurality of groups of elastic springs arranged along the circumferential direction, an interception cloth is fixedly installed between two adjacent groups of elastic springs, the interception cloth is fixedly connected to the fixed sleeve, the lifting frame is fixedly connected with a plurality of groups of active telescopic rods, the movable end of the active telescopic rod is fixedly connected with a hinge joint slidably connected to the outer tube, the hinge joint is hinged with a plurality of groups of hinge frames, the hinge frames are hinged with hinge seats fixedly connected to the elastic springs, and the hinge seats are fixedly connected with a pressure sensing probe.

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