In-situ frozen soil vane shear apparatus

Abstract

The invention belongs to the technical field of frozen soil detection, and discloses an in-situ frozen soil vane shear apparatus which comprises a supporting frame provided with a walking assembly. The locking mechanism comprises a plurality of locking assemblies arranged on the supporting frame. The lifting mechanism comprises a lifting frame arranged on the supporting frame, and a lifting assembly capable of lifting is movably connected to the lifting frame and used for controlling frozen soil at different depths to be subjected to shear tests; the shearing mechanism comprises a shearing motor arranged on the lifting assembly, the output end of the shearing motor is in transmission connection with a telescopically-arranged shearing assembly, and a circulating assembly used for controlling the temperature is circularly arranged in the shearing assembly. The device is simple in structure and convenient to use, can be conveniently transported to a field frozen soil area for a shear test, and can conveniently adjust the balance of the device and lock the device; due to the arrangement of the lifting adjusting function, shear tests can be conducted on frozen soil with different depths, it is guaranteed that the temperature of a shear area is matched with the outside world, and the accuracy of shear test data is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of frozen soil detection, and in particular relates to an in-situ frozen soil cross-plate shear instrument. Background Art

[0002] The cross plate shear apparatus is an indoor geotechnical testing instrument used to measure the undrained strength of soft soil or sensitive clay. It not only measures the undrained strength of the original soil taken at different depths, but also can conduct tests under different consolidation pressures and measure the sensitivity of the soil.

[0003] Under low temperature conditions, the water inside the soil freezes into ice. Under the action of ice, the strength of the soil is significantly improved, which makes the conventional cross-plate shear instrument subject to greater pressure and more prone to damage. At the same time, the temperature of the frozen soil layer is not constant, but gradually increases toward the side away from the ground, and its performance will also change. However, when the cross-plate moves from a low-temperature position to a high-temperature position, the temperature difference between the cross-plate and the soil causes a large error between the measured data results and the actual frozen soil parameters, and cannot provide data support for studying the geological environment of frozen soil areas.

[0004] Therefore, the present application designs an in-situ frozen soil cross-plate shear instrument to solve the above-mentioned technical problems. Summary of the invention

[0005] In order to solve the above technical problems, the present invention proposes an in-situ frozen soil cross-plate shear instrument.

[0006] To achieve the above object, the present invention provides an in-situ frozen soil cross-plate shear instrument, comprising: A support frame, wherein a walking assembly for facilitating movement is provided on the support frame; A locking mechanism, comprising a plurality of locking components arranged on the support frame, the locking components extending from the support frame and used to adjust the balance of the support frame, and the locking components can be used to lock the support frame on the frozen ground; A lifting mechanism, comprising a lifting frame arranged on the support frame, wherein a lifting assembly that can be lifted and lowered is movably connected to the lifting frame, and is used to control shear tests on frozen soil at different depths; The shearing mechanism comprises a shearing motor arranged on the lifting component, the output end of the shearing motor is drivingly connected with a telescopic shearing component, and a circulation component for controlling temperature is circulated in the shearing component.

[0007] Preferably, the shearing assembly includes an end rod drivingly connected to the shearing motor, the bottom end of the end rod is sequentially connected with a plurality of extension rods, a shearing head is arranged at the bottom end of the extension rod, the shearing head extends under the frozen soil layer and performs a shearing test, and the circulation assembly is arranged in a circulation inside the shearing head.

[0008] Preferably, the circulation component includes a first channel and a second channel opened in the end rod, the first channel is connected to the first circulation channel in the cutting head through a first extension channel arranged in the extension rod, the second channel is connected to the second circulation channel in the cutting head through a second extension channel in the extension rod, and the first circulation channel and the second circulation channel are connected.

[0009] Preferably, the lifting assembly is provided with an independently arranged first circulation box and a second circulation box, and the end rod passes through the first circulation box and the second circulation box and is rotatably connected; the first circulation box is connected to the first channel through a first connecting hole, and the second circulation box is connected to the second channel through a second connecting hole.

[0010] Preferably, the shear head is provided with two shear plates arranged in a cross shape, a circulation cavity filled with the shear plates is provided inside the shear plates, and both ends of the circulation cavity are connected with the first circulation channel and the second circulation channel through a third connecting hole and a fourth connecting hole respectively.

[0011] Preferably, the locking assembly includes a balancing cavity opened on the support frame, the balancing cavity is provided with a balancing rod for lifting, and the bottom end of the balancing rod extends out of the bottom end of the support frame and is in contact with the ground through a balancing plate.

[0012] Preferably, a locking cavity is provided in the inner cavity of the balance pole, a locking rod is lifted and lowered in the locking cavity, the bottom end of the locking rod extends out of the balance plate and penetrates into the ground; a locking sleeve is threadedly connected to the balance pole, the bottom end of the locking sleeve is rotatably connected to a lifting cylinder, and the lifting cylinder is transmission-connected to the top end of the locking rod.

[0013] Preferably, a plurality of first guide grooves are formed on the outer wall of the balance bar, and a first guide block matched with the first guide groove is provided on the support frame, and the first guide block extends into the first guide groove and is slidably arranged with the first guide groove.

[0014] Preferably, a plurality of second guide grooves are formed through the side walls of the locking cavity, and a plurality of second guide blocks adapted to the second guide grooves are provided on the top side walls of the locking rod, and the second guide blocks are slidably connected to the second guide grooves; the second guide blocks extend out of the second guide grooves and are fixedly connected to the lifting cylinder.

[0015] Preferably, the lifting assembly includes a lifting motor fixedly mounted on the lifting frame, the output end of the lifting motor is downward and drivingly connected to a lifting screw, a lifting block is threadedly connected to the lifting screw, and the lifting block is slidingly connected to the lifting frame; the shearing motor, the first circulation box and the second circulation box are respectively fixedly mounted on the lifting block.

[0016] Compared with the prior art, the present invention has the following advantages and technical effects: the present invention discloses an in-situ frozen soil cross-plate shearing instrument, the support frame is made of a frame structure, which can reduce the dead weight of the equipment, facilitate transportation and transfer, and be convenient for use in the field; the walking component is arranged on the support frame, which is convenient for free movement; a plurality of locking components of the locking mechanism are arranged on the support frame at equal intervals, and the balance of the support frame can be adjusted during use, which is convenient for use on uneven ground, and the support frame can be locked to the ground through the locking component after leveling, which can ensure the balance of the device when performing shear tests on frozen soil and avoid test errors caused by sliding caused by shear reaction force; the lifting frame of the lifting mechanism is installed on the support frame, and the shear mechanism The cutting motor is installed on the lifting component, and the lifting component drives the shear motor to rise and fall, thereby driving the shear component to rise and fall, so that the bottom end of the shear component extends into the frozen soil for shearing test. At the same time, the length of the shear component can be easily adjusted, thereby conveniently adjusting the depth of the shear component extending into the frozen soil, thereby improving the applicability of the device; the circulation component can adjust the temperature of the shear component through the circulation fluid set according to the frozen soil temperature detected by the shear component, so that the shear component is adapted to the external ambient temperature, thereby facilitating the shear test, avoiding the shear test error caused by the temperature difference between the shear component and the frozen soil, improving the authenticity of the data obtained from the shear test, and providing more detailed data for new research on frozen soil characteristics.

[0017] The present invention has a simple structure and is easy to use. It can be conveniently transported to a field frozen soil area for shear tests, and the balance of the device can be conveniently adjusted and locked. The setting of the lifting and lowering adjustment function can perform shear tests on frozen soil of different depths, and ensure that the temperature of the shear area matches the outside world, thereby improving the accuracy of the shear test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 This is an axial view of the in-situ frozen soil cross-plate shear instrument of the present invention; Figure 2 It is a side view of the in-situ frozen soil cross plate shear instrument of the present invention; Figure 3 It is a schematic diagram of the locking mechanism of the present invention; Figure 4 For the present invention Figure 3 A partial cross-sectional enlarged view of the middle part; Figure 5 This is a view of the balance bar axis of the present invention; Figure 6 It is a schematic diagram of the end rod structure of the present invention; Figure 7 This is a schematic diagram of the shear plate structure of the present invention; Figure 8 This is a schematic diagram of the structure of the detection mechanism of the second embodiment of the present invention; Fig. 9 For the present invention Figure 8 A partial enlarged view of B in the middle; Fig.10 For the present invention Figure 8 A partial enlarged view of middle C; Fig.11 This is a schematic diagram of a first connection component in Embodiment 3 of the present invention; Fig.12 This is a schematic diagram of a second connection component in Embodiment 3 of the present invention; In the figure: 1, support frame; 2, walking wheel; 3, walking frame; 4, lifting frame; 5, shearing motor; 6, shearing assembly; 7, end rod; 8, extension rod; 9, shearing head; 10, first channel; 11, second channel; 12, first extension channel; 13, first circulation channel; 14, second extension channel; 15, second circulation channel; 16, first circulation box; 17, second circulation box; 18, first connecting hole; 19, second connecting hole; 20, shear plate; 21, circulation cavity; 22, third connecting hole; 23, fourth connecting hole; 24, balance cavity; 25, balance rod; 26, balance plate; 27, balance sleeve; 28, balance pipe; 29, locking cavity; 30, locking rod; 31, locking sleeve; 32, lifting cylinder; 33, first guide groove; 34, first guide block; 35, second guide groove; 36, second guide Block; 37, lifting motor; 38, lifting screw; 39, lifting block; 40, connecting tube; 41, telescopic rod; 42, handle; 43, temperature sensor; 44, detection slot; 45, detection frame; 46, detection module; 47, adjustment slot; 48, adjustment block; 49, adjustment bolt; 50, locking hole; 51, locking rod; 52, support plate; 53, contact block; 54, contact slot; 55, accommodating slot; 56, expansion plate; 57, lifting support rod; 58, guide section; 59, locking section; 60, positioning head; 61, bottom tube; 62, movable rod; 63, support spring; 64, support block; 65, ball; 66, connecting slot; 67, connecting head; 68, first bolt; 69, first sealing gasket; 70, mounting slot; 71, second sealing gasket; 72, connecting plate; 73, second bolt; 74, mounting head. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment 1 Reference Figure 1-Figure 7 As shown, this embodiment provides an in-situ frozen soil cross plate shear instrument, comprising: A support frame 1, on which a walking assembly for easy movement is provided; The locking mechanism includes a plurality of locking components arranged on the support frame 1, the locking components extend out of the support frame 1 and are used to adjust the balance of the support frame 1, and the locking components can be used to lock the support frame 1 on the frozen ground; The lifting mechanism comprises a lifting frame 4 arranged on the support frame 1, and a lifting component that can be lifted and lowered is movably connected to the lifting frame 4, and is used to control the shear test of frozen soil at different depths; The shearing mechanism comprises a shearing motor 5 arranged on the lifting component. The output end of the shearing motor 5 is transmission-connected with a telescopic shearing component 6. A circulation component for controlling temperature is circulated in the shearing component 6.

[0022] The present invention discloses an in-situ frozen soil cross plate shearing instrument. The support frame 1 is made of a frame structure, which can reduce the dead weight of the equipment, facilitate transportation and transfer, and be convenient for use in the field; the walking component is arranged on the support frame 1, which is convenient for free movement; a plurality of locking components of the locking mechanism are arranged on the support frame 1 at equal intervals, and the balance of the support frame 1 can be adjusted during use, which is convenient for use on uneven ground. At the same time, after leveling, the support frame 1 can be locked on the ground through the locking component, which can ensure the balance of the device when performing a shear test on frozen soil, and avoid test errors caused by sliding caused by shear reaction force; the lifting frame 4 of the lifting mechanism is installed on the support frame 1, and the shearing motor 5 of the shearing mechanism is installed on the support frame 1. Installed on the lifting component, the lifting component drives the shear motor 5 to rise and fall, and then drives the shear component 6 to rise and fall, so that the bottom end of the shear component 6 extends into the frozen soil for shearing test, and at the same time, the length of the shear component 6 can be easily adjusted, so as to conveniently adjust the depth of the shear component 6 extending into the frozen soil, thereby improving the applicability of the device; the circulation component can adjust the temperature of the shear component 6 through the circulating fluid set according to the frozen soil temperature detected by the shear component 6, so that the shear component 6 is adapted to the external ambient temperature, thereby facilitating the shearing test, avoiding the shearing test error caused by the temperature difference between the shear component 6 and the frozen soil, and improving the authenticity of the data obtained by the shearing test. The present invention has a simple structure and is easy to use. It can be conveniently transported to the field frozen soil area for shearing test, and at the same time, the balance of the device can be conveniently adjusted and locked; the setting of the lifting and lowering adjustment function can perform shearing tests on frozen soil of different depths, and ensure that the temperature of the shearing area matches the outside world, thereby improving the accuracy of the shearing test data.

[0023] Furthermore, the support frame 1 adopts a frame-type structure, which ensures the portability of the device itself and can flexibly adjust the installation position of the internal equipment.

[0024] Furthermore, in order to improve the protection of the equipment, a protective plate can be attached to the outside of the support frame 1 to prevent external dust and impurities from affecting the equipment, thereby improving the protection of the equipment.

[0025] Furthermore, the walking assembly of this embodiment includes a walking frame 3 arranged on the supporting frame 1, and the bottom end of the walking frame 3 extends out of the supporting frame 1 and is equipped with walking wheels 2 to facilitate the movement of the supporting frame 1.

[0026] Furthermore, a connecting tube 40 is provided on one side of the support frame 1, and a telescopic rod 41 is provided in the connecting tube 40 for lifting and lowering, and a handle 42 is provided between the two telescopic rods 41 for convenient pushing or pulling of the equipment. At the same time, the height of the handle 42 can be adjusted to facilitate different users to control the support frame 1.

[0027] Further optimization scheme, the shearing assembly 6 includes an end rod 7 connected to the shearing motor 5, and the bottom end of the end rod 7 is connected with several extension rods 8 in sequence, and a shearing head 9 is arranged at the bottom end of the extension rod 8, and the shearing head 9 extends into the frozen soil layer and performs a shearing test, and the circulation assembly is arranged in a circulation manner with the shearing head 9. The end rod 7 is connected to the output end of the shearing motor 5 in a transmission manner to provide the required shearing force for the shearing test; the bottom end of the end rod 7 can be connected to several sections of the extension rod 8, and the overall length of the extension assembly can be adjusted to control the depth of the shearing head 9 extending into the frozen soil; after use, the extension rod 8 can be easily disassembled for convenient transportation and storage; the circulating fluid of the circulation assembly circulates from the shearing head 9 after passing through the end rod 7 and several sections of the extension rod 8 to adjust the temperature of the shearing head 9.

[0028] Furthermore, a shear force sensor is provided between the end rod 7 and the shear motor 5 in this embodiment to measure the shear force applied to the shear head 9 when shearing the frozen soil.

[0029] Furthermore, a temperature sensor 43 is provided in the shearing head 9 of this embodiment. The temperature sensor 43 is used to measure the temperature at the shearing position. The temperature data is transmitted to an external circulation device, thereby controlling the temperature of the circulating fluid and adjusting the temperature of the shearing head 9.

[0030] Further optimized solution, the circulation component includes a first channel 10 and a second channel 11 opened in the end rod 7, the first channel 10 is connected to the first circulation channel 13 in the cutting head 9 through the first extension channel 12 set in the extension rod 8, the second channel 11 is connected to the second circulation channel 15 in the cutting head 9 through the second extension channel 14 in the extension rod 8, and the first circulation channel 13 and the second circulation channel 15 are connected. The first channel 10 and the second channel 11 in the end rod 7 are used for the circulation of the circulating liquid in and out. The circulating liquid enters the first circulation channel 13 of the cutting head 9 from the first channel 10 through the first extension channel 12, and then enters the second channel 11 from the second circulation channel 15 in the cutting head 9 through the second extension channel 14, so that the circulating liquid can circulate, and the flow of the circulating liquid can be conveniently controlled, thereby adjusting the temperature of the cutting head 9.

[0031] Further optimization scheme, the lifting assembly is provided with an independently set first circulation box 16 and a second circulation box 17, and the end rod 7 penetrates the first circulation box 16 and the second circulation box 17 and is rotatably connected; the first circulation box 16 is connected to the first channel 10 through the first connecting hole 18, and the second circulation box 17 is connected to the second channel 11 through the second connecting hole 19. The first circulation box 16 and the second circulation box 17 are respectively connected to the external circulation equipment, one for the entry of the circulating fluid and the other for the discharge of the circulating fluid; at the same time, the end rod 7 is rotatably set with the first circulation box 16 and the second circulation box 17 through the sealed bearing, which can ensure the rotation of the end rod 7 without affecting the connection between the two.

[0032] Further optimized solution, two shear plates 20 arranged in a cross are provided on the shear head 9, and a circulation cavity 21 filled with shear plates 20 is provided in the shear plate 20, and the two ends of the circulation cavity 21 are respectively connected with the first circulation channel 13 and the second circulation channel 15 through the third connecting hole 22 and the fourth connecting hole 23. The circulation cavity 21 is provided in the shear plate 20, and its two ends are respectively connected with the first circulation channel 13 and the second circulation channel 15, so that the circulating fluid flows through the circulation cavity 21, and the temperature of the shear plate 20 is changed by the temperature of the circulating fluid in the circulation cavity 21.

[0033] Furthermore, the first connecting hole 18 and the second connecting hole 19 of this embodiment are both configured as a plurality of holes to facilitate the flow of the circulating fluid.

[0034] A further optimized solution is provided, in which the locking assembly includes a balancing chamber 24 opened on the support frame 1, and a balancing rod 25 is arranged in the balancing chamber 24 for lifting and lowering, and the bottom end of the balancing rod 25 extends out of the bottom end of the support frame 1 and is in contact with the ground through a balancing plate 26; a balancing sleeve 27 is rotatably connected to the bottom end of the balancing chamber 24, and the balancing sleeve 27 is threadedly connected to the outer wall of the balancing rod 25; a plurality of first guide grooves 33 are opened on the outer wall of the balancing rod 25, and a first guide block 34 adapted to the first guide groove 33 is arranged on the support frame 1, and the first guide block 34 extends into the first guide groove 33 and is slidably arranged in the first guide groove 33. A through hole is provided at the bottom end of the balancing chamber 24, and a balancing plate 26 is installed after the balancing rod 25 passes through the through hole. The first guide block 34 is arranged in the through hole, which can ensure that the balancing rod 25 is only lifted and lowered but not rotated. A balancing tube 28 is fixedly connected to the bottom end of the balancing chamber 24, and a balancing sleeve 27 is rotatably connected to the balancing tube 28. When the balancing sleeve 27 rotates, the lifting and lowering of the balancing rod 25 can be controlled through the threaded connection between the balancing sleeve 27 and the balancing rod 25, thereby controlling the extended length of the balancing plate 26 and adjusting the balance of the support frame 1. At the same time, when conducting the test, the balancing rod 25 props the walking wheel 2 at the bottom end of the support frame 1 off the ground to prevent it from shaking.

[0035] To further optimize the solution, a locking cavity 29 is provided in the inner cavity of the balance bar 25, and a locking rod 30 is lifted and lowered in the locking cavity 29, and the bottom end of the locking rod 30 extends out of the balance plate 26 and penetrates into the ground; a locking sleeve 31 is threadedly connected to the balance bar 25, and a lifting cylinder 32 is rotatably connected to the bottom end of the locking sleeve 31, and the lifting cylinder 32 is transmission-connected to the top end of the locking rod 30; a plurality of second guide grooves 35 are penetrated through the side wall of the locking cavity 29, and a plurality of second guide grooves 35 are provided on the top side wall of the locking rod 30 to match the second guide blocks 36, and the second guide blocks 36 are slidably connected to the second guide grooves 35; the second guide blocks 36 extend out of the second guide grooves 35 and are fixedly connected to the lifting cylinder 32. The locking rod 30 is slidably connected in the locking cavity 29, and the second guide block 36 at the top end of the locking rod 30 extends out of the second guide groove 35 and is fixedly connected to the lifting cylinder 32; when the locking sleeve 31 rotates, the lifting cylinder 32 is driven to rise and fall through the threaded connection between the locking sleeve 31 and the balance rod 25, thereby driving the locking rod 30 to rise and fall, so that the tip of the bottom end of the locking rod 30 extends out of the balance plate 26 and penetrates into the frozen soil, thereby ensuring stability during shearing.

[0036] Further optimizing the scheme, the lifting assembly includes a lifting motor 37 fixedly mounted on the lifting frame 4, the output end of the lifting motor 37 is downwardly connected to the lifting screw 38, the lifting screw 38 is threadedly connected to the lifting block 39, and the lifting block 39 is slidably connected to the lifting frame 4; the shearing motor 5, the first circulation box 16 and the second circulation box 17 are respectively fixedly mounted on the lifting block 39. The lifting motor 37 drives the lifting block 39 to rise and fall through the lifting screw 38, thereby controlling the lifting of the shearing motor 5, providing power for penetrating the frozen soil, and then drilling downward in combination with the shearing of the shear plate 20.

[0037] Embodiment 2 See attached Figure 8-Figure 10 As shown, the difference between this embodiment and the first embodiment is that the lifting frame 4 of this embodiment is provided with a detection mechanism for detecting the geological environment below, which is used to detect the target area before the drilling test, and to find stones or other objects that may affect the drilling in the detection area in advance, thereby ensuring the smooth progress of the drilling, avoiding damage to the shear head 9, and ensuring the progress of the test.

[0038] The detection mechanism of this embodiment includes a detection component movably arranged at the bottom end of the lifting frame 4, and an adjustment component for controlling the movement and fixation of the detection component is arranged in the lifting frame 4. Before use, the detection component is unlocked by the adjustment component, and then the detection component is adjusted to a position corresponding to the shear head 9 to detect the area below the target area to ensure that there are no stones or other debris in the area below. If stones or other debris that affect the drilling test are found, it is necessary to change the detection position or remove the debris that affects the drilling in advance; after use, the detection component is retracted and fixed by the adjustment component, and then the drilling test is carried out.

[0039] The detection assembly includes a detection slot 44 provided below the lifting frame 4, in which a detection frame 45 is detachably connected, and the detection frame 45 can move in and out of the detection slot 44 driven by the adjustment assembly, which is convenient for storage and use; a detection module 46 for detection is provided on the detection frame 45; when not in use, the adjustment assembly locks the detection frame 45 in the detection slot 44 so that it does not protrude, avoids collision, and improves its protection; when in use, the detection frame 45 is pushed out of the detection slot 44 through the adjustment assembly, and then rotated into place to move the detection module 46 to a position corresponding to the shearing head 9, and then the stones and other debris underground are detected, and subsequent processing is performed according to the detection results after the detection is completed; after use, the detection frame 45 is retracted into the detection slot 44 again through the adjustment assembly and locked and fixed, which is convenient for subsequent use.

[0040] Furthermore, the detection module 46 of the present embodiment is a conventional geological detection device, which can use media including but not limited to electromagnetic, vibration, gravity or ultrasound for detection. Its principles and usage methods can refer to KDZ1114-8C30 mine geological detector or DTC200 explosion-proof geological advance detector, which will not be repeated here.

[0041] The adjustment component includes an adjustment module for controlling the lifting and rotation of the detection frame 45 and a locking module for supporting and locking the detection frame 45; the locking module supports and locks the free end of the detection frame 45 when the detection frame 45 is embedded back into the detection groove 44. When in use, the locking module is turned away so that the detection frame 45 can freely enter and exit the detection groove 44. After use, the detection frame 45 is retracted into the detection groove 44 by the adjustment module again, and is supported and locked by the locking module.

[0042] The adjustment module includes an adjustment slot 47 provided on the lifting frame 4, in which an adjustment block 48 is provided for lifting and sliding. An adjustment bolt 49 is threadedly connected to the top of the adjustment block 48. The adjustment bolt 49 passes through the bottom plate of the lifting frame 4 and is rotatably connected to the lifting frame 4. The bottom side wall of the adjustment slot 47 is connected to the detection slot 44, and the end of the lifting frame 4 is fixedly connected to the side wall of the adjustment block 48, so as to drive the detection frame 45 to be lifted and lowered by the lifting and lowering of the adjustment block 48, thereby controlling the use of the detection frame 45. When in use, the adjustment bolt 49 exposed at the top of the lifting frame 4 is rotated to control the lifting and lowering of the adjustment block 48 and drive the lifting and lowering of the detection frame 45.

[0043] Furthermore, the side wall of the adjustment block 48 is provided with a plurality of limit grooves, and the side wall of the adjustment groove 47 is provided with a plurality of limit strips matched with the limit grooves, so that the adjustment block 48 can only be raised and lowered, and will not rotate together with the adjustment bolt 49.

[0044] The locking assembly includes a locking hole 50 that passes through the lifting frame 4, and a locking rod 51 is movably arranged in the locking hole 50. The bottom end of the locking rod 51 extends out of the locking hole 50 and is vertically fixed to one end of a support plate 52, and a flexible contact block 53 is arranged on the top of the other end of the support plate 52. When the detection wave module is not in use, the free end of the support plate 52 is driven by the locking rod 51 to turn toward the detection frame 45, and the contact block 53 is supported on the free end of the detection frame 45 to support and lock the detection frame 45.

[0045] Furthermore, a contact groove 54 adapted to the contact block 53 is provided at the bottom end of the detection frame 45. When the detection frame 45 is supported and locked, the contact block 53 is snapped into the contact groove 54 to improve the locking stability.

[0046] Furthermore, a receiving groove 55 coaxially arranged with the locking hole 50 is opened in the middle of the locking hole 50, and an extension plate 56 is provided in the area where the locking rod 51 passes through the receiving groove 55, so that the extension plate 56 can be raised and lowered and rotated in the receiving groove 55. The outer diameter of the extension plate 56 is larger than the diameter of the locking hole 50 to prevent it from falling out.

[0047] Furthermore, a plurality of lifting support rods 57 are provided at the bottom end of the accommodating groove 55, and the top end of the lifting support rod 57 is supported on the bottom surface of the extension plate 56; when in use, the locking rod 51 is pressed downward so that the locking rod 51 moves downward along the locking hole 50, and then drives the contact block 53 to descend and separate from the detection frame 45 through the support plate 52, and then the locking rod 51 is rotated so that the support plate 52 no longer blocks the lifting of the detection frame 45; and after the rotation, the locking rod 51 is released, and the lifting support rod 57 drives the locking rod 51 to reset by supporting the extension plate 56, so as to facilitate the subsequent locking of the detection frame 45 again.

[0048] Furthermore, a prismatic guide section 58 is provided at the bottom end of the locking rod 51, and a locking section 59 matched with the guide section 58 is provided at the bottom end of the locking hole 50. When not in use, the locking section 59 is pushed up by the lifting support rod 57, and the guide section 58 and the locking section 59 are stuck, so as to prevent the locking rod 51 from deflecting and improve the locking stability; when in use, the top end of the locking rod 51 is pressed down by a tool to make the guide section 58 move down and out of the locking section 59, and then the locking rod 51 can be conveniently rotated by the tool to separate the contact block 53 from the detection frame 45.

[0049] Furthermore, a positioning head 60 is provided at the top of the locking rod 51 of this embodiment, and a fixed angle limiting module is provided between the positioning head 60 and the locking hole 50. The set angle is adapted to the number of prisms of the guide section 58 and the locking section 59, so that the locking rod 51 can be deflected at a specific angle.

[0050] Furthermore, the lifting support rod 57 includes a bottom cylinder 61 fixed at the bottom end of the accommodating groove 55, and a movable rod 62 is arranged for lifting inside the bottom cylinder 61. A support spring 63 is arranged between the bottom end of the movable rod 62 and the bottom cylinder 61, which is used to support the movable rod 62 to rebound; the top end of the movable rod 62 extends out of the bottom cylinder 61 and is fixedly connected to a support block 64, and the top end of the support block 64 is in rolling contact with the bottom end of the extension plate 56 through a ball 65, so that the deflection of the locking rod 51 will not be affected when the extension plate 56 is supported.

[0051] Embodiment 3 Reference Figure 11-Figure 12 In this embodiment, the bottom end of the end rod 7 is connected to the top extension rod 8 through a first connecting component, and the bottom end of the bottom extension rod 8 is connected to the top of the shear head 9 through a second connecting component, which facilitates the sealing connection of the internal circulation channel and realizes the flow of the medium.

[0052] The first connecting component includes a connecting groove 66 opened at the top of the extension rod 8, and a connecting head 67 matched with the connecting groove 66 is provided at the bottom end of the end rod 7. The connecting head 67 and the connecting groove 66 are both provided with a specific prism shape to facilitate the corresponding connection between the first channel 10 and the first extension channel 12, and the side wall of the extension rod 8 is provided with a locking through hole, and the side wall of the connecting head 67 is provided with a locking screw hole matched with the locking through hole; when connecting, the connecting head 67 is inserted into the connecting groove 66, the locking through hole and the locking screw hole are aligned, and then locked and fixed by the first bolt 68, so that the extension rod 8 and the end rod 7 are connected together, ensuring the stability of the connection and the normal connection of the internal channel.

[0053] Furthermore, the cross-sections of the connector 67 and the connector groove 66 are both configured in specific shapes so that when the two are connected together, the corresponding channels can be aligned exactly to avoid confusion.

[0054] Furthermore, the entrance of the locking screw hole is provided with a trumpet-shaped opening to facilitate the first bolt 68 in the locking through hole to penetrate into the locking screw hole.

[0055] Furthermore, a first sealing gasket 69 is provided between the connecting head 67 and the connecting groove 66 to increase the sealing performance of the connection.

[0056] Furthermore, both ends of the extension rod 8 of this embodiment are provided with a connecting head 67 and a connecting groove 66, respectively, so as to facilitate the connection of multiple groups of extension rods 8 and to conduct tests on strata at different depths.

[0057] The second connecting component includes a mounting groove 70 opened at the bottom end of the last section of the extension rod 8. A mounting head 74 adapted to the mounting groove 70 is provided at the top end of the cutting head 9. When connected, the mounting head 74 is inserted into the mounting groove 70. The cutting head 9 is provided with a connecting plate 72 adapted to the cross-section of the extension rod 8. A plurality of second bolts 73 are provided on the connecting plate 72. The connecting plate 72 is pressed onto the bottom end of the extension rod 8 by the second bolts 73 to complete the fixation.

[0058] Furthermore, the mounting groove 70 and the mounting head 74 are both configured to be a specific prism shape so that the passage between the extension rod 8 and the cutting head 9 is aligned.

[0059] Furthermore, a second sealing gasket 71 is provided between the mounting groove 70 and the mounting head 74, so that the channel in the extension rod 8 is aligned with and connected to the channel in the cutting head 9, with precise positioning and high sealing performance.

[0060] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. An in-situ frozen soil cross-plate shear instrument, characterized in that: include: A support frame (1), wherein the support frame (1) is provided with a walking assembly for facilitating movement; A locking mechanism, comprising a plurality of locking components arranged on the support frame (1), the locking components extending out of the support frame (1) and used to adjust the balance of the support frame (1), the locking components being used to lock the support frame (1) on the frozen ground; A lifting mechanism comprises a lifting frame (4) arranged on the support frame (1), wherein a lifting component that can be lifted and lowered is movably connected to the lifting frame (4) and is used to control shear tests on frozen soil at different depths; The shearing mechanism comprises a shearing motor (5) arranged on the lifting component, the output end of the shearing motor (5) being drivingly connected to a telescopic shearing component (6), and a circulation component for controlling temperature being arranged in an internal circulation of the shearing component (6).

2. The in-situ frozen soil cross plate shear instrument according to claim 1, characterized in that: The shearing assembly (6) comprises an end rod (7) which is transmission-connected to the shearing motor (5); the bottom end of the end rod (7) is connected to a plurality of extension rods (8) in sequence end to end; a shearing head (9) is arranged at the bottom end of the extension rod (8); the shearing head (9) extends under the frozen soil layer and performs a shearing test; and the circulation assembly is arranged in a circulation manner within the shearing head (9).

3. The in-situ frozen soil cross plate shear instrument according to claim 2, characterized in that: The circulation assembly comprises a first channel (10) and a second channel (11) opened in the end rod (7); the first channel (10) is connected to a first circulation channel (13) in the cutting head (9) via a first extension channel (12) arranged in the extension rod (8); the second channel (11) is connected to a second circulation channel (15) in the cutting head (9) via a second extension channel (14) in the extension rod (8); the first circulation channel (13) and the second circulation channel (15) are connected.

4. The in-situ frozen soil cross plate shear instrument according to claim 3, characterized in that: The lifting assembly is provided with a first circulation box (16) and a second circulation box (17) which are independently arranged. The end rod (7) passes through the first circulation box (16) and the second circulation box (17) and is rotatably connected. The first circulation box (16) is connected to the first channel (10) through a first connecting hole (18), and the second circulation box (17) is connected to the second channel (11) through a second connecting hole (19).

5. The in-situ frozen soil cross plate shear instrument according to claim 3, characterized in that: The shearing head (9) is provided with two shearing plates (20) arranged in a cross shape, and a circulation cavity (21) which is filled with the shearing plates (20) is provided in the shearing plates (20), and two ends of the circulation cavity (21) are respectively connected to the first circulation channel (13) and the second circulation channel (15) through a third connecting hole (22) and a fourth connecting hole (23).

6. The in-situ frozen soil cross plate shear instrument according to claim 1, characterized in that: The locking assembly comprises a balancing cavity (24) opened on the support frame (1), the balancing cavity (24) being provided with a balancing rod (25) for lifting, the bottom end of the balancing rod (25) extending out of the bottom end of the support frame (1) and being in contact with the ground through a balancing plate (26).

7. The in-situ frozen soil cross plate shear instrument according to claim 6, characterized in that: The inner cavity of the balancing rod (25) is provided with a locking cavity (29), and a locking rod (30) is arranged in the locking cavity (29) for lifting and lowering, and the bottom end of the locking rod (30) extends out of the balancing plate (26) and penetrates into the ground; a locking sleeve (31) is threadedly connected to the balancing rod (25), and the bottom end of the locking sleeve (31) is rotatably connected to a lifting cylinder (32), and the lifting cylinder (32) is drivingly connected to the top end of the locking rod (30).

8. The in-situ frozen soil cross plate shear instrument according to claim 6, characterized in that: The outer wall of the balance bar (25) is provided with a plurality of first guide grooves (33), and the support frame (1) is provided with first guide blocks (34) adapted to the first guide grooves (33). The first guide blocks (34) extend into the first guide grooves (33) and are slidably arranged with the first guide grooves (33).

9. The in-situ frozen soil cross plate shear instrument according to claim 7, characterized in that: A plurality of second guide grooves (35) are formed through the side wall of the locking cavity (29); a plurality of second guide blocks (36) adapted to the second guide grooves (35) are provided on the top side wall of the locking rod (30); the second guide blocks (36) are slidably connected to the second guide grooves (35); the second guide blocks (36) extend out of the second guide grooves (35) and are fixedly connected to the lifting cylinder (32).

10. The in-situ frozen soil cross plate shear instrument according to claim 4, characterized in that: The lifting assembly comprises a lifting motor (37) fixedly mounted on the lifting frame (4); the output end of the lifting motor (37) is downwardly facing and drivingly connected to a lifting screw (38); a lifting block (39) is threadedly connected to the lifting screw (38); the lifting block (39) is slidably connected to the lifting frame (4); the shearing motor (5), the first circulation box (16) and the second circulation box (17) are respectively fixedly mounted on the lifting block (39).

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