Device and method for detecting bearing capacity of foundation of water conservancy project

Abstract

The invention relates to the technical field of detection devices, in particular to a device and method for detecting the bearing capacity of a foundation of a water conservancy project, and the device comprises a moving frame, a traction mechanism, a hydraulic column and a drill rod, the hydraulic column is vertically fixed on the upper surface of the moving frame, the upper end part of the hydraulic column is provided with a guide chain wheel, and the lower end part of the hydraulic column is provided with a driving chain wheel; the guiding chain wheel and the driving chain wheel are in transmission connection through a chain. When the device is used for detecting the bearing capacity of the foundation, the hanging block is driven by the chain to lift the drop hammer upwards to a certain height and enable the drop hammer to fall freely, the falling drop hammer impacts the bearing table so as to drive the lower end of the drill rod to be inserted into the surface of the foundation, and the distance of downward movement of the drill rod is measured according to the measuring mechanism. And the impact times of the drop hammer and the descending distance of the drill rod and probe rod during each impact are recorded, so that the detection of the bearing capacity of the foundation is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and in particular to a device and method for detecting the bearing capacity of a foundation of a water conservancy project. Background Art

[0002] The bearing capacity of the foundation refers to the ability of the foundation to bear the load. The bearing capacity test of the foundation refers to the evaluation of the ability of the foundation to bear the load of buildings or other structures through a series of methods and technical means. This process is crucial to ensure the safety and stability of the building, and the bearing capacity test of the foundation is generally carried out using testing equipment.

[0003] The Chinese patent with publication number CN118756765A discloses a foundation bearing capacity detection trolley and a method of using the same, which belongs to the technical field of foundation bearing capacity detection. The foundation bearing capacity detection trolley includes a detection trolley main body, on which a lifting drive member and a mounting assembly are provided, and the mounting assembly includes a vertical fixed rod and a horizontal fixed rod; a hammer assembly is slidably provided on the two vertical fixed rods, and the hammer assembly includes a mounting frame with a hammer plate slidably provided inside, a drill rod is provided under the hammer plate, and a drive member for driving the hammer plate to repeatedly hammer the drill rod is provided on the mounting frame; the lifting drive member drives the mounting frame to move vertically along the length direction of the two slide grooves; when conducting a large-scale foundation bearing capacity detection test, the bearing capacity detection work can be completed efficiently and quickly, which greatly reduces the personnel input, effectively reduces the labor intensity of the test and detection personnel, and solves the problems of high personnel input, low efficiency and high safety risks commonly existing in the foundation bearing capacity detection at this stage.

[0004] The above-mentioned foundation bearing capacity detection trolley controls the second motor to drive the transmission chain to run. The chain push plate and the hammer plate hanging rod cooperate to lift the hammer plate and then freely fall to hammer the drill rod to detect the foundation bearing capacity. However, the lifting height of the hammer plate is fixed, and the hammer force cannot be adjusted according to different detection scenarios and different geological foundations. Moreover, it is difficult to pull the drill rod out of the foundation after the detection is completed. Summary of the invention

[0005] In order to solve the problems that the lifting height of the hammer plate of the above-mentioned foundation bearing capacity detection trolley is fixed, the hammering force cannot be adjusted according to different detection scenarios and different geological foundations, and it is difficult to pull the drill rod out of the foundation after the detection is completed, the present invention proposes a device and method for detecting the bearing capacity of the foundation of water conservancy projects.

[0006] In order to solve the above technical problems, the present invention is implemented by the following technical solutions: a device for detecting the bearing capacity of a water conservancy project foundation, comprising a mobile frame, a pulling mechanism, a hydraulic column and a drilling rod; The hydraulic column is vertically fixed on the upper surface of the mobile frame, a guide sprocket is installed on the upper end of the hydraulic column, and a driving sprocket is installed on the lower end of the hydraulic column. The guide sprocket and the driving sprocket are connected by a chain transmission. A driving mechanism for driving the driving sprocket to rotate is also fixed on the lower end of the hydraulic column, and a pulling sprocket for pulling and tightening the chain to the left is arranged on the left side of the hydraulic column, and a hanging block is fixed on the right side of the chain; The drill probe rod is arranged on the right side of the hydraulic column, the lower end of the drill probe rod passes through the moving frame, and a bearing platform is fixed on the drill probe rod, a lifting hammer sleeved on the drill probe rod is arranged on the upper side of the bearing platform, and the hanging block lifts the lifting hammer upward following the rotation of the chain, and a supporting frame for guiding the drill probe rod to move up and down is fixed on the upper end of the hydraulic column, and a measuring mechanism for measuring the downward moving distance of the drill probe rod is fixed on the upper side of the supporting frame; The pulling mechanism is installed on the upper surface of the mobile frame, and the pulling mechanism is arranged on the left side of the pulling sprocket. The upper end of the pulling mechanism is fixedly connected to the pulling sprocket, and the pulling mechanism can pull the pulling sprocket to the left.

[0007] As a preferred solution, a U-shaped frame is fixed to the upper end of the hydraulic column, a guide sprocket is installed on the inner side of the U-shaped frame, a "J"-shaped frame is fixed to the lower end of the hydraulic column, a driving sprocket is installed on the inner side of the "J"-shaped frame, a driving mechanism is fixed on the outer side of the "J"-shaped frame, and the lower end of the "J"-shaped frame is fixed on the mobile frame; The support frame is set in a plate shape and is fixed to the upper end of the U-shaped frame by screws. A guide sleeve for guiding the drill probe rod is fixed near the right end of the support frame.

[0008] As a preferred solution, the pulling mechanism includes a first guide rail fixed on the movable frame and a movable rod for pulling the pulling sprocket to the left, the lower end of the movable rod is movably mounted on the first guide rail, a fixed plate is fixed to the left end of the first guide rail, and a pulling screw rod with a transverse thread passing through the movable rod is provided on the upper side of the first guide rail, the left end of the pulling screw rod is rotatably mounted on the fixed plate, and a turning handle is fixed to the left end of the pulling screw rod.

[0009] As a preferred solution, an insertion rod is laterally inserted into the upper end of the moving rod, and a locking screw for locking the insertion rod is threadedly installed on the upper end surface of the moving rod, and a pulling frame for installing a pulling sprocket is fixed to the right end of the insertion rod.

[0010] As a preferred solution, the lifting mechanism includes a lifting plate vertically penetrating the mobile frame and two front and rear lifting screws rotatably mounted on the mobile frame, a lifting motor driving the lifting screws to rotate is fixed on the lower side of the mobile frame, lifting blocks cooperating with the lifting screws to penetrate are fixed on the front and rear sides of the lifting plate, and a support plate for lifting the load-bearing platform is horizontally inserted on the upper end of the lifting plate; The left end of the supporting plate is provided with a sleeve opening which is sleeved on the drilling probe rod, and the upper end of the lifting plate is threadedly provided with an adjusting screw which is locked and fixed when the supporting plate is adjusted.

[0011] As a preferred solution, the measuring mechanism includes an adjusting seat and a second guide rail mounted on the support frame, a measuring wheel pressed against the probe rod is mounted on the upper end of the adjusting seat, a rubber layer is arranged on the outer circumferential surface of the measuring wheel, an encoder is mounted on one side of the adjusting seat, and an input shaft of the encoder is fixedly connected to the central axis of the measuring wheel; The lower end of the adjustment seat is slidably clamped on the second guide rail, and a fixing block is fixed on the left end of the second guide rail. A tightening screw for tightening the adjustment seat to the right is penetrated through a transverse thread on the fixing block.

[0012] As a preferred solution, the driving mechanism includes a fixed frame fixed on the outside of the X-shaped frame, a rotating gear mounted on the central axis of the driving sprocket and a driving gear meshing with the rotating gear are arranged on the inner side of the fixed frame, and a driving motor is fixed on the outer side of the fixed frame to drive the driving gear to rotate.

[0013] As a preferred solution, the mobile frame includes a support plate, a handle is fixed on the upper surface of the support plate near the left side, and roller legs are fixed on the lower side of the support plate near the four corners, and an adjustment leg is threadedly installed on the support plate near the roller leg.

[0014] As a preferred solution, the adjustable leg includes a support screw, the lower end of the support screw is detachably connected to a universal adjustment rod, and the lower end of the universal adjustment rod is fixed with a pad; The universal adjustment rod includes a ball head fixed on the upper side of the pad and a connecting sleeve fixed on the lower end of the support screw. The lower end of the support screw is fixed with a connecting head, and the upper end of the connecting sleeve is fixed with a threaded head fixedly connected to the connecting head.

[0015] A method for using a device for detecting bearing capacity of a water conservancy project foundation comprises the following steps: S1: Move the entire detection device to the position to be detected, then adjust the legs to lower them for ground support, and fix the position of the entire detection device; S2: Control the lifting motor to drive the lifting screw to rotate, the rotating lifting screw drives the lifting plate to descend, the lifting plate drives the supporting plate to descend so that the lower end of the drill probe rod touches the ground, and then the supporting plate is pulled away from the bearing platform; S3: Then, the hydraulic column is controlled to extend and retract according to different soil layers and engineering requirements to adjust the height of the chain; When the hydraulic column raises the chain height, it is necessary to rotate the pulling screw by the turning handle to drive the moving rod to move to the right, thereby driving the pulling sprocket to adjust to the right. At this time, the chain is in a relaxed state, and then the hydraulic column raises the chain height; When the hydraulic column lowers the chain height, the chain is in a relaxed state. The pull rod is rotated by the reverse turning handle to drive the moving rod to move left, thereby driving the pull sprocket to adjust leftward, so that the chain is in a taut state. S4: Then the driving motor is started to drive the driving gear to rotate, and the driving gear drives the rotating gear to drive the chain to rotate. The hanging block on the rotating chain moves the lifting hammer until the hanging block moves to the uppermost end and away from the lifting hammer. At this time, the lifting hammer falls downward and hits the bearing platform, and the lower end of the drilling probe rod drills into the surface of the base. After each impact of the lifting hammer, the depth of the drilling probe rod drilling into the foundation surface is recorded, thereby completing the detection of the foundation bearing capacity; S5: After the inspection is completed, push the support plate to move to the lower side of the bearing platform and tighten the adjusting screw to fix it, then control the lifting motor to drive the lifting screw to rotate in the opposite direction, the lifting screw rotating in the opposite direction drives the lifting plate to lift, and the lifting plate drives the support plate to lift and pull the drill rod out of the foundation surface.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When testing the bearing capacity of the foundation, the chain drives the hanging block to lift the drop hammer upward to a certain height and let it fall freely. The falling drop hammer impacts the bearing platform, thereby driving the lower end of the drill probe rod to insert into the foundation surface, and the downward movement distance of the drill probe rod is measured according to the measuring mechanism. The number of impacts of the drop hammer and the descending distance of the drill probe rod at each impact are recorded, thereby completing the testing of the bearing capacity of the foundation; The support plate is supported on the lower side of the bearing platform. At this time, the lifting screw is driven to rotate by the lifting motor. The rotating lifting screw drives the lifting block to drive the lifting plate to rise, so that the support plate lifts the bearing platform upward, thereby pulling out the drill probe rod from the foundation surface, without manual pulling out operation, making it more convenient to pull out the drill probe rod; The measuring mechanism uses the rubber layer arranged on the outer circumferential surface of the measuring wheel to better fit with the drill probe rod, so that when the drill probe rod descends, the measuring wheel is driven to rotate, and the number of rotations of the measuring wheel is monitored in real time through the encoder, and the real-time measurement of the downward movement distance of the drill probe rod is obtained according to the number of rotations of the measuring wheel; The pulling mechanism rotates the pulling screw rod through the rotating handle, and the rotating pulling screw rod drives the moving rod to move left and right, so that the moving rod drives the pulling sprocket to adjust left and right so that it can follow the hydraulic column to adjust the height of the chain to pull and adjust. The pulling mechanism is used to pull the pulling sprocket to ensure that the chain is in a taut state, so that the chain can stably drive the hanging block to lift the lifting hammer; The continuously rolling chain drives the hanging block to lift the drop hammer and makes it fall freely when the hanging block reaches the top and is away from the drop hammer. The continuously rolling chain drives the hanging block to repeatedly lift and drop the drop hammer, making the impact operation during the detection of the drop hammer more convenient and quick, and the structure is simpler and cost-effective. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a hydraulic column of the present invention; Figure 3 is a schematic diagram of the pulling mechanism of the present invention; Figure 4 is a schematic diagram of the lifting mechanism of the present invention; Figure 5 It is a schematic diagram of the measuring mechanism of the present invention; Figure 6 is a schematic diagram of the driving mechanism of the present invention; Figure 7 It is a schematic diagram of a mobile frame of the present invention; Figure 8 It is a schematic diagram of the adjustment leg of the present invention.

[0018] In the figure: 1. moving frame; 110. handle; 120. support plate; 130. roller leg; 140. adjusting leg; 1401. supporting screw; 1402. connecting head; 1403. connecting sleeve; 1404. pad; 1405. ball head; 1406. threaded head; 2. pulling mechanism; 21. first guide rail; 22. moving rod; 23. fixing plate; 24. pulling screw; 25. locking screw; 26. inserting rod; 27. pulling frame; 3. pulling sprocket; 4. chain; 5. supporting frame; 6. measuring mechanism; 61. adjusting seat; 62. second guide rail; 63. Tightening screw; 64, fixing block; 65, encoder; 66, measuring wheel; 7, guide sprocket; 8, hydraulic column; 81, U-shaped frame; 82, "X"-shaped frame; 9, drill probe rod; 10, lifting hammer; 11, bearing platform; 12, lifting mechanism; 121, lifting motor; 122, lifting plate; 123, support plate; 124, sleeve; 125, adjusting screw; 126, lifting screw rod; 127, lifting block; 13, hanging block; 14, driving mechanism; 141, driving motor; 142, fixing frame; 143, rotating gear; 144, driving gear; 15, driving sprocket. DETAILED DESCRIPTION

[0019] like Figure 1 As shown, a device for detecting the bearing capacity of a foundation of a water conservancy project comprises a mobile frame 1, a pulling mechanism 2, a hydraulic column 8 and a drilling rod 9; The hydraulic column 8 is vertically fixed on the upper surface of the mobile frame 1, and the upper end of the hydraulic column 8 is installed with a guide sprocket 7, and the lower end of the hydraulic column 8 is installed with a drive sprocket 15, and the guide sprocket 7 and the drive sprocket 15 are connected by a chain 4. The lower end of the hydraulic column 8 is also fixed with a driving mechanism 14 for driving the drive sprocket 15 to rotate, and the left side of the hydraulic column 8 is provided with a pulling sprocket 3 for pulling and tightening the chain 4 to the left, and a hanging block 13 is fixed on the right side of the chain 4. The chain 4 is made to move by the cooperation of the drive sprocket 15 and the guide sprocket 7. The right side of the hydraulic column 8 rolls vertically upward and drives the hanging block 13 to lift the lifting hammer 10, and the height of the guide sprocket 7 is adjusted by the telescopic adjustment of the hydraulic column 8, so as to achieve the adjustment of the lifting height of the lifting hammer 10 by the hanging block 13, and the lifting hammer 10 can be adjusted to different heights according to different soil layers and engineering requirements, so that the measuring device can be adjusted for different geological foundations and various detection scenes, with better adaptability and flexibility, so as to better accurately measure the bearing capacity of the foundation; The drilling probe rod 9 is arranged on the right side of the hydraulic column 8, the lower end of the drilling probe rod 9 passes through the mobile frame 1, and a bearing platform 11 is fixed on the drilling probe rod 9, and a lifting hammer 10 sleeved on the drilling probe rod 9 is arranged on the upper side of the bearing platform 11, and the hanging block 13 lifts the lifting hammer 10 upward following the rotation of the chain 4, and the upper end of the hydraulic column 8 is fixed with a support frame 5 for guiding the drilling probe rod 9 to move up and down, and a measuring mechanism 6 for measuring the downward movement distance of the drilling probe rod 9 is fixed on the upper side of the support frame 5. When the foundation bearing capacity is detected, the hanging block 13 is driven by the chain 4 to lift the lifting hammer 10 upward to a certain height and make it fall freely, and the falling lifting hammer 10 impacts the bearing platform 11, thereby driving the lower end of the drilling probe rod 9 to be inserted into the foundation surface, and the distance of the downward movement of the drilling probe rod 9 is measured according to the measuring mechanism 6, and the impact number of the lifting hammer 10 and the falling distance of the drilling probe rod 9 during each impact are recorded, thereby completing the detection of the foundation bearing capacity; The pulling mechanism 2 is installed on the upper surface of the mobile frame 1, and the pulling mechanism 2 is arranged on the left side of the pulling sprocket 3. The upper end of the pulling mechanism 2 is fixedly connected to the pulling sprocket 3, and the pulling mechanism 2 can pull the pulling sprocket 3 to the left. The pulling mechanism 2 is used to pull the pulling sprocket 3, thereby ensuring that the chain 4 is in a taut state, so that the chain 4 can stably drive the hanging block 13 to lift the lifting hammer 10.

[0020] like Figure 2 As shown, a U-shaped frame 81 is fixed to the upper end of the hydraulic column 8, and a guide sprocket 7 is installed on the inner side of the U-shaped frame 81. The guide sprocket 7 supports the upper end of the chain 4 and guides the chain 4 when rolling; The lower end of the hydraulic column 8 is fixed with a "J"-shaped frame 82, the driving sprocket 15 is installed on the inner side of the "J"-shaped frame 82, the driving mechanism 14 is fixed on the outer side of the "J"-shaped frame 82, and the lower end of the "J"-shaped frame 82 is fixed on the moving frame 1, and the driving mechanism 14 drives the driving sprocket 15 to rotate, thereby driving the chain 4 to roll; The support frame 5 is set to be plate-shaped, and the support frame 5 is fixed to the upper end of the U-shaped frame 81 by screws. A guide sleeve for guiding the drill probe rod 9 is fixed near the right end of the support frame 5. The plate-shaped support frame 5 is fixed to the upper end of the hydraulic column 8, and the guide sleeve is used to guide and support the upper end of the drill probe rod 9 when it moves up and down.

[0021] like Figure 3 As shown, the pulling mechanism 2 includes a first guide rail 21 fixed on the moving frame 1 and a moving rod 22 for pulling the pulling sprocket 3 to the left, and the lower end of the moving rod 22 is movably mounted on the first guide rail 21, and the first guide rail 21 guides the moving rod 22 when it moves left and right; A fixed plate 23 is fixed to the left end of the first guide rail 21, and a pulling screw rod 24 with a transverse thread penetrating the moving rod 22 is arranged on the upper side of the first guide rail 21. The left end of the pulling screw rod 24 is rotatably mounted on the fixed plate 23, and a turning handle is fixed to the left end of the pulling screw rod 24. The pulling screw rod 24 is rotated by the turning handle, and the rotating pulling screw rod 24 drives the moving rod 22 to move left and right, so that the moving rod 22 drives the pulling sprocket 3 to be adjusted left and right so that it can follow the hydraulic column 8 to adjust the height of the chain 4 for pulling adjustment.

[0022] An insertion rod 26 is laterally inserted into the upper end of the moving rod 22, and a locking screw 25 for locking and fixing the insertion rod 26 is threadedly installed on the upper end surface of the moving rod 22. A pulling frame 27 for installing the pulling sprocket 3 is fixed to the right end of the insertion rod 26. The pulling frame 27 fixes and supports the pulling sprocket 3. At the same time, the pulling frame 27 is inserted into the upper end of the moving rod 22 by the insertion rod 26, and then the insertion rod 26 is locked and fixed by the locking screw 25, thereby completing the fixed installation of the pulling frame 27 on the moving rod 22.

[0023] like Figure 4As shown, the lifting mechanism 12 includes a lifting plate 122 that vertically penetrates the mobile frame 1 and two front and rear lifting screw rods 126 that are rotatably installed on the mobile frame 1. A lifting motor 121 that drives the lifting screw rod 126 to rotate is fixed to the lower side of the mobile frame 1. Lifting blocks 127 that cooperate with the lifting screw rod 126 to penetrate are fixed to the front and rear sides of the lifting plate 122. A support plate 123 that lifts the bearing platform 11 is horizontally inserted through the upper end of the lifting plate 122. The support plate 123 is supported on the lower side of the bearing platform 11. At this time, the lifting screw rod 126 is driven to rotate by the lifting motor 121, and the rotating lifting screw rod 126 drives the lifting block 127 to drive the lifting plate 122 to rise, so that the support plate 123 lifts the bearing platform 11 upward, thereby pulling out the drill probe rod 9 from the foundation surface, without the need for manual pulling-out operation, making it more convenient to pull out the drill probe rod 9. A sleeve 124 is provided at the left end of the support plate 123, which is sleeved on the drill probe rod 9. The support plate 123 is sleeved on the drill probe rod 9 by means of the sleeve 124 and lifts the supporting platform 11 upwards. An adjusting screw 125 is threadedly installed on the upper end of the lifting plate 122 for locking and fixing the support plate 123 when adjusting it. When the support plate 123 supports the supporting platform 11, the adjusting screw 125 is used to lock and fix the support plate 123 to prevent it from loosening, thereby ensuring its stable support for the supporting platform 11.

[0024] like Figure 5 As shown, the measuring mechanism 6 includes an adjusting seat 61 and a second guide rail 62 installed on the support frame 5, the upper end of the adjusting seat 61 is provided with a measuring wheel 66 that is tightly against the drill probe rod 9, and the outer circumferential surface of the measuring wheel 66 is provided with a rubber layer. The measuring wheel 66 uses the rubber layer provided on the outer circumferential surface to better fit with the drill probe rod 9, so that the measuring wheel 66 is driven to rotate when the drill probe rod 9 descends, and an encoder 65 is installed on one side of the adjusting seat 61, and the input shaft of the encoder 65 is fixedly connected to the central axis of the measuring wheel 66. The number of rotations of the measuring wheel 66 is monitored in real time by the encoder 65, and the real-time measurement of the downward movement distance of the drill probe rod 9 is obtained according to the number of rotations of the measuring wheel 66; The lower end of the adjustment seat 61 is slidably mounted on the second guide rail 62, and a fixing block 64 is fixed to the left end of the second guide rail 62. A tightening screw 63 for tightening the adjustment seat 61 to the right passes through the transverse thread on the fixing block 64. The adjustment seat 61 is mounted on the second guide rail 62 to realize sliding adjustment of the left and right positions. At this time, the adjusting seat 61 is tightened by screwing the tightening screw 63 so that the measuring wheel 66 is pressed against the drill probe rod 9, thereby ensuring that the measuring wheel 66 is more stably matched with the drill probe rod 9.

[0025] like Figure 6As shown, the driving mechanism 14 includes a fixed frame 142 fixed to the outside of the "X"-shaped frame 82, and a rotating gear 143 mounted on the central axis of the driving sprocket 15 and a driving gear 144 meshing with the rotating gear 143 are arranged on the inner side of the fixed frame 142. A driving motor 141 that drives the driving gear 144 to rotate is fixed to the outer side of the fixed frame 142. The output shaft of the driving motor 141 drives the driving gear 144 to rotate, and the rotating driving gear 144 drives the rotating gear 143 to rotate, and the rotating gear 143 drives the driving sprocket 15 to rotate.

[0026] like Figure 7 As shown, the mobile frame 1 includes a support plate 120, a handle 110 is fixed on the upper surface of the support plate 120 near the left side, and roller legs 130 are fixed on the lower side of the support plate 120 near the four corners. The handle 110 and the roller legs 130 cooperate to facilitate the movement of the entire mobile frame 1, so as to facilitate the movement of the entire detection device to the detection location for detection; The support plate 120 is threadedly installed with an adjustment leg 140 near the roller leg 130. The adjustment leg 140 is adjusted downward to support the ground, thereby achieving fixed support for the entire detection device. At the same time, the support heights of multiple adjustment legs 140 can be adjusted according to the conditions of the foundation surface, thereby adjusting the entire detection device horizontally to better meet the detection requirements and ensure detection accuracy.

[0027] like Figure 8 As shown, the adjustment leg 140 includes a support screw 1401, the lower end of the support screw 1401 is detachably connected to a universal adjustment rod, and a pad 1404 is fixed to the lower end of the universal adjustment rod. The support screw 1401 is screwed to lower the pad 1404 at the lower end for ground support, thereby achieving fixed support of the adjustment leg 140, and the universal adjustment rod is used to adjust the pad 1404 to any angle, thereby better adapting to the uneven foundation surface; The universal adjustment rod includes a ball head 1405 fixed on the upper side of the pad 1404 and a connecting sleeve 1403 fixed on the lower end of the support screw 1401. The universal adjustment rod composed of the ball head 1405 and the connecting sleeve 1403 can adjust the pad 1404 to any angle, so that the pad 1404 can be better supported on the ground. A connecting head 1402 is fixed to the lower end of the support screw 1401 , a threaded head 1406 fixedly connected to the connecting head 1402 is fixed to the upper end of the connecting sleeve 1403 , and the connecting sleeve 1403 is fixed to the connecting head 1402 via the threaded head 1406 to achieve a fixed connection with the support screw 1401 .

[0028] A method for using a device for detecting bearing capacity of a water conservancy project foundation comprises the following steps: S1: Move the entire detection device to the position to be detected, then adjust the legs to lower them for ground support, and fix the position of the entire detection device; S2: Control the lifting motor to drive the lifting screw to rotate, the rotating lifting screw drives the lifting plate to descend, the lifting plate drives the supporting plate to descend so that the lower end of the drill probe rod touches the ground, and then the supporting plate is pulled away from the bearing platform; S3: Then, the hydraulic column is controlled to extend and retract according to different soil layers and engineering requirements to adjust the height of the chain; When the hydraulic column raises the chain height, it is necessary to rotate the pulling screw by the turning handle to drive the moving rod to move to the right, thereby driving the pulling sprocket to adjust to the right. At this time, the chain is in a relaxed state, and then the hydraulic column raises the chain height; When the hydraulic column lowers the chain height, the chain is in a relaxed state. The pull rod is rotated by the reverse turning handle to drive the moving rod to move left, thereby driving the pull sprocket to adjust leftward, so that the chain is in a taut state. S4: Then the driving motor is started to drive the driving gear to rotate, and the driving gear drives the rotating gear to drive the chain to rotate. The hanging block on the rotating chain moves the lifting hammer until the hanging block moves to the uppermost end and away from the lifting hammer. At this time, the lifting hammer falls downward and hits the bearing platform, and the lower end of the drilling probe rod drills into the surface of the base. After each impact of the lifting hammer, the depth of the drilling probe rod drilling into the foundation surface is recorded, thereby completing the detection of the foundation bearing capacity; S5: After the inspection is completed, push the support plate to move to the lower side of the bearing platform and tighten the adjusting screw to fix it, then control the lifting motor to drive the lifting screw to rotate in the opposite direction, the lifting screw rotating in the opposite direction drives the lifting plate to lift, and the lifting plate drives the support plate to lift and pull the drill rod out of the foundation surface.

[0029] In this embodiment, when testing the bearing capacity of the foundation, the entire device is moved to the position to be tested using the handle 110 and the roller leg 130, and then the support screw 1401 is screwed to lower the pad 1404 at the lower end thereof to support the ground, thereby fixing and supporting the entire testing device; During the inspection, the lifting screw 126 is driven to rotate by the lifting motor 121, and the rotating lifting screw 126 drives the lifting plate 122 to descend, and the lifting plate 122 drives the supporting plate 123 to descend so that the lower end of the drill probe rod 9 touches the ground, and then the supporting plate 123 is pulled away from the bearing platform 11; At this time, the driving motor 141 is started to drive the driving gear 144 to rotate, and the driving gear 144 drives the rotating gear 143 to drive the chain 4 to rotate, and the hanging block 13 on the rotating chain 4 moves the lifting hammer 10 to lift until the hanging block 13 moves to the uppermost end and away from the lifting hammer 10, and the lifting hammer 10 falls downward and hits the bearing platform 11, so that the lower end of the drilling probe rod 9 drills into the surface of the base, and the depth of the drilling probe rod 9 drilling into the foundation surface is recorded after each impact of the lifting hammer 10, thereby completing the detection of the foundation bearing capacity; When the drill probe rod 9 moves downward, the measuring wheel 66 is driven to rotate, and the encoder 65 monitors the number of rotations of the measuring wheel 66 in real time, and obtains the real-time measurement of the downward movement distance of the drill probe rod 9 according to the number of rotations of the measuring wheel 66, and records the number of impacts of the lifting hammer 10 and the depth of the drill probe rod 9 descending each time, thereby completing the recording of the detection data; After the inspection is completed, the support plate 123 is controlled to descend to a position below the supporting platform 11, and then the support plate 123 is pushed to move to the lower side of the supporting platform 11 and the adjusting screw 125 is screwed to lock it, and then the lifting motor 121 is controlled to drive the lifting screw 126 to rotate in the opposite direction, and the lifting screw 126 rotating in the opposite direction drives the lifting plate 122 to lift, and the lifting plate 122 drives the support plate 123 to lift and pull the drill probe 9 out from the foundation surface.

[0030] The above are preferred implementation modes of the present invention. Those skilled in the art to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A device for detecting the bearing capacity of a water conservancy project foundation, characterized in that: It comprises a moving frame (1), a pulling mechanism (2), a hydraulic column (8) and a drilling rod (9); The hydraulic column (8) is vertically fixed on the upper surface of the mobile frame (1), the upper end of the hydraulic column (8) is equipped with a guide sprocket (7), and the lower end of the hydraulic column (8) is equipped with a drive sprocket (15), the guide sprocket (7) and the drive sprocket (15) are connected by a chain (4), the lower end of the hydraulic column (8) is also fixed with a driving mechanism (14) for driving the drive sprocket (15) to rotate, and the left side of the hydraulic column (8) is provided with a pulling sprocket (3) for pulling and tightening the chain (4) to the left, and the right side of the chain (4) is fixed with a hanging block (13); The drill probe rod (9) is arranged on the right side of the hydraulic column (8), the lower end of the drill probe rod (9) passes through the movable frame (1), and a bearing platform (11) is fixed on the upper side of the drill probe rod (9), a lifting hammer (10) sleeved on the drill probe rod (9) is arranged on the upper side of the bearing platform (11), the hanging block (13) follows the rotation of the chain (4) to lift the lifting hammer (10) upward, the upper end of the hydraulic column (8) is fixed with a support frame (5) for guiding the drill probe rod (9) to move up and down, and a measuring mechanism (6) for measuring the downward movement distance of the drill probe rod (9) is fixed on the upper side of the support frame (5); The pulling mechanism (2) is mounted on the upper surface of the mobile frame (1), and the pulling mechanism (2) is arranged on the left side of the pulling sprocket (3). The upper end of the pulling mechanism (2) is fixedly connected to the pulling sprocket (3), and the pulling mechanism (2) can pull the pulling sprocket (3) to the left.

2. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 1 is characterized in that: A U-shaped frame (81) is fixed to the upper end of the hydraulic column (8), the guide sprocket (7) is mounted on the inner side of the U-shaped frame (81), an I-shaped frame (82) is fixed to the lower end of the hydraulic column (8), the drive sprocket (15) is mounted on the inner side of the I-shaped frame (82), the drive mechanism (14) is fixed on the outer side of the I-shaped frame (82), and the lower end of the I-shaped frame (82) is fixed to the moving frame (1); The support frame (5) is configured in a plate shape and is fixed to the upper end of the U-shaped frame (81) by means of screws. A guide sleeve for guiding the drill probe rod (9) is fixed near the right end of the support frame (5).

3. The device for detecting bearing capacity of foundation of water conservancy project according to claim 1, characterized in that: The pulling mechanism (2) comprises a first guide rail (21) fixed on the moving frame (1) and a moving rod (22) for pulling the pulling sprocket (3) to the left, the lower end of the moving rod (22) is movably mounted on the first guide rail (21), a fixing plate (23) is fixed to the left end of the first guide rail (21), and a pulling screw rod (24) with a transverse thread penetrating the moving rod (22) is provided on the upper side of the first guide rail (21), the left end of the pulling screw rod (24) is rotatably mounted on the fixing plate (23), and a rotating handle is fixed to the left end of the pulling screw rod (24).

4. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 3 is characterized in that: An insertion rod (26) is inserted transversely through the upper end of the moving rod (22), and a locking screw (25) for locking and fixing the insertion rod (26) is threadedly mounted on the upper end surface of the moving rod (22), and a pulling frame (27) for installing the pulling sprocket (3) is fixed to the right end of the insertion rod (26).

5. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 1, characterized in that: The lifting mechanism (12) comprises a lifting plate (122) vertically penetrating the moving frame (1) and two front and rear lifting screw rods (126) rotatably mounted on the moving frame (1); a lifting motor (121) for driving the lifting screw rods (126) to rotate is fixed to the lower side of the moving frame (1); lifting blocks (127) for cooperating with the lifting screw rods (126) to penetrate are fixed to the front and rear sides of the lifting plate (122); a support plate (123) for lifting the bearing platform (11) is horizontally inserted at the upper end of the lifting plate (122); The left end of the support plate (123) is provided with a sleeve opening (124) sleeved on the drill probe rod (9), and the upper end of the lifting plate (122) is threadedly mounted with an adjusting screw (125) for locking and fixing the support plate (123) when adjusting it.

6. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 2, characterized in that: The measuring mechanism (6) comprises an adjusting seat (61) and a second guide rail (62) mounted on a support frame (5); a measuring wheel (66) pressed against the probe rod (9) is mounted on the upper end of the adjusting seat (61); a rubber layer is provided on the outer circumferential surface of the measuring wheel (66); an encoder (65) is mounted on one side of the adjusting seat (61); an input shaft of the encoder (65) is fixedly connected to a central axis of the measuring wheel (66); The lower end of the adjustment seat (61) is slidably mounted on the second guide rail (62), a fixing block (64) is fixed to the left end of the second guide rail (62), and a tightening screw (63) for tightening the adjustment seat (61) to the right is passed through a transverse thread on the fixing block (64).

7. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 2, characterized in that: The driving mechanism (14) comprises a fixing frame (142) fixed on the outside of the "X"-shaped frame (82); a rotating gear (143) mounted on the central axis of the driving sprocket (15) and a driving gear (144) meshing with the rotating gear (143) are arranged on the inside of the fixing frame (142); and a driving motor (141) for driving the driving gear (144) to rotate is fixed on the outside of the fixing frame (142).

8. The device for detecting the bearing capacity of a water conservancy project foundation according to claim 1, characterized in that: The mobile frame (1) comprises a support plate (120), a handle (110) being fixed on the upper surface of the support plate (120) near the left side, and roller legs (130) being fixed on the lower side of the support plate (120) near four corners, and an adjustment leg (140) being threadedly mounted on the support plate (120) near the roller leg (130).

9. The device for detecting the bearing capacity of the foundation of a water conservancy project according to claim 8, characterized in that: The adjusting leg (140) comprises a supporting screw (1401), the lower end of the supporting screw (1401) is detachably connected to a universal adjusting rod, and the lower end of the universal adjusting rod is fixed with a pad (1404); The universal adjustment rod comprises a ball head (1405) fixed to the upper side of the pad (1404) and a connecting sleeve (1403) fixed to the lower end of the support screw (1401); a connecting head (1402) is fixed to the lower end of the support screw (1401); and a threaded head (1406) fixedly connected to the connecting head (1402) is fixed to the upper end of the connecting sleeve (1403).

10. A method for using a device for detecting bearing capacity of a water conservancy project foundation according to any one of claims 1 to 9, characterized in that The following steps are involved: S1: Move the entire detection device to the position to be detected, then screw and adjust the legs to lower them for ground support, thus completing the position fixation of the entire detection device; S2: Control the lifting motor to drive the lifting screw to rotate, the rotating lifting screw drives the lifting plate to descend, the lifting plate drives the supporting plate to descend so that the lower end of the drill probe rod touches the ground, and then the supporting plate is pulled away from the bearing platform; S3: Then, the hydraulic column is controlled to extend and retract according to different soil layers and engineering requirements to adjust the height of the chain; When the hydraulic column raises the chain height, it is necessary to rotate the pulling screw by the turning handle to drive the moving rod to move to the right, thereby driving the pulling sprocket to adjust to the right. At this time, the chain is in a relaxed state, and then the hydraulic column raises the chain height; When the hydraulic column lowers the chain height, the chain is in a relaxed state. The pull rod is rotated by the reverse turning handle to drive the moving rod to move left, thereby driving the pull sprocket to adjust leftward, so that the chain is in a taut state. S4: Then the driving motor is started to drive the driving gear to rotate, and the driving gear drives the rotating gear to drive the chain to rotate. The hanging block on the rotating chain moves the lifting hammer until the hanging block moves to the uppermost end and away from the lifting hammer. At this time, the lifting hammer falls downward and hits the bearing platform, and the lower end of the drilling probe rod drills into the surface of the base. After each impact of the lifting hammer, the depth of the drilling probe rod drilling into the foundation surface is recorded, thereby completing the detection of the foundation bearing capacity; S5: After the inspection is completed, push the support plate to move to the lower side of the bearing platform and tighten the adjusting screw to fix it, then control the lifting motor to drive the lifting screw to rotate in the opposite direction, the lifting screw rotating in the opposite direction drives the lifting plate to lift, and the lifting plate drives the support plate to lift and pull the drill rod out of the foundation surface.

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