A ground detection device

Abstract

The present invention relates to the technical field of foundation detection, and specifically to a foundation detection device, including a frame, a base plate arranged on the frame, and a taker mechanism, the taker mechanism including: two one-way lockers, respectively arranged above and below the base plate, wherein the middle part of the one-way locker is used to penetrate a drill rod; when the one-way locker moves upward relative to the drill rod, the one-way locker automatically locks the drill rod; a driving rod, one end of which is rotatably connected to the one-way locker above the base plate, a tension spring is arranged between the driving rod and the base plate, and the one-way locker above the base plate reciprocates up and down; a driving mechanism is installed on the frame, when the driving mechanism rotates forward, it is used to drive the core hammer to move upward; when the driving mechanism is reversed, it is used to drive the cam to rotate. The present invention has the effect of being able to lift the drill rod by cooperating with the one-way locker when the driving mechanism is reversed.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation detection, and in particular to a foundation detection device. Background Art

[0002] The standard penetration test is a method for testing the bearing capacity of sand or clay foundations on site. It uses a certain hammer energy to drive a split-tube penetrator of a certain specification into the soil at the bottom of the borehole, and judges the changes in the soil layer and the engineering properties of the soil based on the penetration impedance of the soil. The standard penetration test uses a core hammer that falls freely at a distance of 76cm to complete the penetration of the penetrator. A guide rod is set in the middle of the core hammer to guide the fall of the core hammer. The hammering speed of the core hammer should be 15-30 times per minute.

[0003] The Chinese patent document with the authorization announcement number CN114892629B discloses a water conservancy project foundation bearing capacity detection device, including a mobile carrier, on which a controller, an operating handle and a detachable battery are installed, a lifting mechanism, the lifting mechanism includes a fixed plate, an electric hydraulic push rod and a movable plate, the electric hydraulic push rod is installed on the mobile carrier through the fixed plate, and the movable end of the electric hydraulic push rod is fixed with the movable plate; a multi-directional rotation mechanism, which is installed on the movable plate, a heavy hammer release mechanism, which is driven by the multi-directional rotation mechanism to perform a rotation operation of the first vertical plane and the second vertical plane, the first vertical plane and the second vertical plane are perpendicular to each other, and a heavy hammer. The automatic release and reset operation of the heavy hammer is realized through the lifting mechanism, the multi-directional rotation mechanism and the heavy hammer release mechanism.

[0004] However, during the foundation inspection process, after the penetrator is hammered into the ground, it is necessary to remove the penetrator so as to inspect the next location. Although the weight can be automatically released after being reset by the lifting mechanism, multi-directional rotation mechanism and weight release mechanism, the automatically released weight can only hammer the penetrator to make it enter the soil at the bottom of the borehole, and it is impossible to remove the penetrator after the penetrator has completed the inspection. Finally, it needs to be removed by other equipment or manually, which makes it inconvenient to remove the penetrator. Summary of the invention

[0005] The present invention provides a foundation detection device, aiming to solve the problem in the related art that it is inconvenient to remove the penetrator from the bottom of a borehole after the penetrator completes the detection.

[0006] A foundation detection device of the present invention comprises a frame, a base plate is arranged on the frame, and also comprises a taker mechanism, the taker mechanism comprises: two one-way locks, which are respectively arranged above and below the base plate, wherein the middle part of the one-way lock is used to penetrate a drill rod; when the one-way lock moves upward relative to the drill rod, the one-way lock automatically locks the drill rod; a driving rod, one end of which is rotatably connected with the one-way lock above the base plate, and a tension spring is arranged between the driving rod and the base plate, and the tension spring is used to drive the one-way lock above the base plate to move downward until it conflicts with the base plate; the middle part of the driving rod is rotatably supported on the frame through an elongated hole; a cam is rotatably mounted on the frame, and through interaction with the driving rod and the tension of the tension spring, the driving rod is driven to swing, thereby realizing the up and down reciprocating movement of the one-way lock above the base plate; a driving mechanism is installed on the frame, and when the driving mechanism rotates forward, it is used to drive the core hammer to move upward; when the driving mechanism reverses, it is used to drive the cam to rotate.

[0007] The effect is that the driving mechanism rotates forward to drive the core hammer to move upward, so that the core hammer can complete the detection of the foundation. When the detection is completed, the driving mechanism is reversed, and the driving mechanism drives the cam to rotate. The cam is installed on the frame, and the cam drives the driving rod to enable the end of the driving rod connected to the one-way lock to move upward. Since the one-way lock moves upward relative to the drill rod, the one-way lock can automatically lock the drill rod, so that the one-way lock will move upward with the drill rod when the driving rod moves upward, thereby lifting the drill rod upward, and when the driving rod moves downward with the one-way lock above the bottom plate under the tension of the tension spring, the one-way lock above the bottom plate stops locking the drill rod, but when the drill rod falls, it will be controlled by the one-way lock below the bottom plate, that is, the one-way lock above the bottom plate and the one-way lock below the bottom plate will alternately automatically lock the drill rod, so that with the swing of the driving rod, the drill rod is taken out from the bottom of the borehole until the penetrometer at the lower end of the drill rod is taken out.

[0008] Preferably, the one-way lock includes an outer shell, a compression spring and a plurality of locking blocks arranged in the outer shell. An accommodating cavity is opened inside the outer shell, and the lower part of the accommodating cavity is a conical surface arranged vertically with the center line. The plurality of locking blocks are slidingly arranged along the inclined direction of the conical surface, and the compression spring abuts against the upper surface of the locking block. When the lower ends of the plurality of locking blocks are flush with the lower surface of the outer shell, the locking blocks are in a state of unlocking the drill rod.

[0009] The effect is that: an accommodating cavity is opened inside the shell, so that the drill rod passes through the middle of the shell, and multiple locking blocks are on the conical surface and can approach or move away from the side wall of the drill rod when sliding along the conical surface. When the lower end of the locking block is flush with the lower surface of the shell, the locking block is in an unlocked state and does not lock the drill rod. In this way, when the device is tested, the one-way locker will not affect the downward movement of the drill rod.

[0010] Preferably, an unlocking plate is provided under the one-way lock under the base plate, and a bolt is threadedly connected to the unlocking plate, and the upper end of the bolt is located above the base plate. The height of the unlocking plate is adjusted by the bolt so that the unlocking plate switches the one-way lock under the base plate to an unlocked or automatically locked state.

[0011] The effect is: an unlocking plate is set under the one-way lock under the base plate. When the one-way lock under the base plate needs to be switched to an unlocked state, the height of the unlocking plate can be changed by adjusting the bolt so that the unlocking plate abuts against the one-way lock; and when the one-way lock under the base plate needs to automatically lock the drill rod, the bolt needs to be loosened to move the unlocking plate downward, thereby releasing the restriction on the locking block in the one-way lock and allowing the locking block to fix the drill rod.

[0012] Preferably, the driving mechanism includes a chain assembly, which includes two upper sprockets, two lower sprockets and two conveying chains. The two upper sprockets are coaxially fixed and rotatably installed on the upper part of the frame, and the two lower sprockets are coaxially fixed and rotatably installed on the lower part of the frame. The two conveying chains are respectively connected to a corresponding set of upper and lower sprockets. Brackets for lifting the core hammer are installed on the two conveying chains. The cam is coaxially arranged with the lower sprocket and a one-way bearing is arranged between the cam and the lower sprocket.

[0013] Preferably, two chain assemblies are provided and are respectively located on both sides of the axis of the core hammer, a transmission assembly is provided between the two chain assemblies, the transmission assembly includes a transmission gear, a transmission sprocket and a transmission chain, a driving motor is fixedly provided on the frame, a transmission gear is coaxially fixed on the output shaft of the driving motor, an upper sprocket in one group of chain assemblies is coaxially connected to another transmission gear, the two transmission gears are externally meshed, a transmission sprocket is coaxially fixed on the output shaft of the driving motor, another transmission sprocket is coaxially connected to the upper sprocket in another group of chain assemblies, and the transmission chain is connected between the two transmission sprockets.

[0014] The effect is that the driving motor drives the chain assembly to work through the transmission assembly. When the chain assembly is driven by the driving motor in the forward rotation, the chain assembly is used to drive the bracket to lift the core hammer, and the one-way bearing arranged between the cam and the lower sprocket will not drive the cam to rotate. After the detection is completed, when the chain assembly is driven by the driving motor in the reverse rotation, the one-way bearing can make the cam and the lower sprocket rotate at the same time, so that the driving mechanism can drive the drill rod to lift and remove the penetrator.

[0015] Preferably, one side of the bracket is fixed on the conveying chain, and a telescopic rod is slidably provided on the other side of the bracket extending away from the conveying chain, and the bracket lifts the core hammer through the telescopic rod; the telescopic rod is connected to a release mechanism, and the release mechanism is used to retract the telescopic rod into the bracket.

[0016] Preferably, the release mechanism includes a main body and a height-fixing rod, the main body is vertically slidably connected to the frame, the height-fixing rod is rotatably installed on the main body, and the first state of the height-fixing rod is that the height-fixing rod is rotated to the top of the drill rod, and the second state of the height-fixing rod is that the height-fixing rod is offset from the top of the drill rod, and a shift rod is installed on the main body, which drives the telescopic rod to retract the bracket, and at the same time, when the height-fixing rod is in the first state, the shift rod limits the height of the core hammer as the bracket is lifted.

[0017] The effect is that when the height-fixing rod is in the first state, the height-fixing rod is used to fall along with the falling of the drill rod, so that the lever on the main body limits the lifting height of the core hammer, thereby making the falling height of the core hammer meet the detection requirements.

[0018] Preferably, the output shaft of the driving motor is connected to the driving gear through a one-way bearing, and a rack meshing with the driving gear is provided on the main body, and the rack is vertically arranged; when the driving motor rotates in the opposite direction, the driving gear drives the rack to move upward; a driving bevel block is fixedly arranged on the frame, and an inclined surface is arranged at the lower part of the driving bevel block, and the inclined surface gradually transitions from its lower end to its upper end from the position when the height fixing rod is in the first state to above the position when the height fixing rod is in the second state.

[0019] The effect is that when the driving motor rotates in the reverse direction, the driving motor drives the active gear to rotate through the one-way bearing, so that the rack can move upward, and the main body also moves upward with the rack. When the height-setting rod on the main body reaches the position abutting against the inclined surface on the driving bevel block, the height-setting rod rotates under the action of the inclined surface, so that the height-setting rod changes from the first state to the second state, so that the height-setting rod offsets the obstruction to the drill rod.

[0020] Preferably, a rotating frame is provided inside the bracket, and the rotating frame is rotatably mounted on the bracket; a rotating shaft is passed through the rotating frame, and a handle is fixedly provided at one end of the rotating shaft, and the handle moves in the vertical direction and rotates through abutment with the lever; the rotation of the rotating frame is used to drive the telescopic rod to perform a telescopic action; a torsion spring is provided between the rotating shaft and the bracket, and the torsion spring is used to drive the rotating frame to return to its position after the handle is separated from the lever, so that the telescopic rod extends out of the bracket.

[0021] The effect is that the rotating frame is rotatably connected to the bracket through a rotating shaft, and a handle is fixedly arranged at one end of the rotating shaft. When the bracket moves from bottom to top along with the conveying chain, the lever can rotate the handle, thereby driving the rotating frame to rotate, so as to drive the telescopic rod to retract into the bracket, thereby completing the automatic release of the core hammer.

[0022] Preferably, the driving rod is provided one at each of the front and rear sides of the one-way lock, and the ends of the two driving rods away from the one-way lock are fixedly connected by a fixing rod.

[0023] The effect is that a fixing rod is fixedly arranged at the end of the driving rod away from the one-way locker. When it is necessary to place multiple drill rods in a borehole continuously, the worker can step on the fixing rod to lift the driving rod and the one-way locker connected thereto so as to continue to connect the drill rods and prevent the drill rods from falling directly into the borehole.

[0024] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0025] The driving mechanism of the present invention drives the cam to rotate, and the cam drives the driving rod to swing upward, so that the driving rod and the connected one-way lock move upward. The one-way lock can automatically lock the drill rod, thereby driving the drill rod to move upward together. When the driving rod moves downward with the one-way lock above the base plate under the tension of the tension spring, the one-way lock above the base plate stops locking the drill rod. At this time, when the drill rod falls, it will be automatically locked by the one-way lock below the base plate. The one-way lock above the base plate and the one-way lock below the base plate automatically lock the drill rod alternately, and as the driving rod swings, the drill rod is gradually removed from the borehole until the penetrator at the lower end of the drill rod is completely exposed from the borehole. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a stereoscopic diagram of a foundation detection device in an embodiment of the present invention;

[0027] Figure 2 is a top view of a foundation detection device in an embodiment of the present invention;

[0028] Figure 3 is a cross-sectional view of a foundation detection device in an embodiment of the present invention;

[0029] Figure 4 is a front view of the height-fixing rod in the second state according to the embodiment of the present invention;

[0030] Figure 5 is a side view of the height-fixing rod in the second state according to the embodiment of the present invention;

[0031] Figure 6 yes Figure 3 A partial enlarged view of part A;

[0032] Figure 7 yes Figure 1 A partial enlarged view of part B;

[0033] Figure 8 is a schematic diagram of the internal structure of a one-way lock in an embodiment of the present invention;

[0034] Fig. 9 yes Figure 3 A partial enlarged view of part C.

[0035] Reference numerals:

[0036] 1. Frame; 11. Bottom plate; 2. Core hammer; 21. Guide rod; 22. Hammer seat; 23. Drill rod; 31. Chain assembly; 311. Upper sprocket; 312. Lower sprocket; 313. Transmission chain; 32. Bracket; 33. Transmission assembly; 331. Transmission gear; 332. Transmission sprocket; 333. Transmission chain; 34. Driving motor; 35. Telescopic rod; 4. Release mechanism; 41. Main body; 411. Limit block; 42. Push rod; 43. Rotating frame; 43 1. Connecting hole; 44. Rotating shaft; 45. Handle; 46. Connecting rod; 47. Torsion spring; 48. Height-fixing rod; 49. Driving inclined block; 491. Inclined surface; 5. Removal mechanism; 51. One-way lock; 511. Housing; 512. Locking block; 513. Accommodating chamber; 514. Slide groove; 52. Driving rod; 53. Cam; 54. Support; 55. Fixing rod; 56. Tension spring; 61. Driving gear; 62. Rack; 7. Stopper; 8. Unlocking plate; 81. Bolt. DETAILED DESCRIPTION

[0037] Combine the following Figures 1 to 9 Embodiments of the present invention are described in detail, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0038] This embodiment discloses a foundation detection device, such as Figure 1 As shown, the device includes a frame 1, a core piercing hammer 2, a driving mechanism, a releasing mechanism 4 and a device removal mechanism 5. A guide rod 21 is arranged at the center of the core piercing hammer 2, and the lower end of the guide rod 21 is threadedly connected to a hammer seat 22, and the lower end of the hammer seat 22 is connected to a drill rod 23, and a penetrator is installed at the lower end of the drill rod 23. The center lines of the penetrator, the drill rod 23, the hammer seat 22, the guide rod 21 and the core piercing hammer 2 coincide. Different numbers of drill rods 23 can be selected according to the depth of the borehole, and two adjacent drill rods 23 are also connected by threads to facilitate the disassembly of the drill rods 23. The core piercing hammer 2 is located above the hammer seat 22, and the core piercing hammer 2 is lifted by a driving mechanism installed on the frame 1. When the core piercing hammer 2 reaches a position 76 cm upward from the hammer seat 22, the core piercing hammer 2 is automatically released by the releasing mechanism 4. The core hammer 2 falls vertically along the guide rod 21 under the action of gravity, and hammers the hammer seat 22, so that the impact force of the core hammer 2 is transmitted to the penetrator through the drill rod 23, thereby driving the penetrator. After the inspection is completed, the drill rod 23 and the penetrator are taken out of the borehole by the take-out mechanism 5.

[0039] A horizontal bottom plate 11 is fixed at the lower part of the frame 1. A through hole is provided at the center of the bottom plate 11, so that the drill rod 23 passes through the bottom plate 11 from the position of the through hole. At the same time, the frame 1 is installed on a carrier, and the foundation detection device can be conveniently moved through the carrier for transporting between different detection positions. In this embodiment, the carrier can be a hand-pushed flatbed truck. The bottom plate 11 is fixed to the upper surface of the carrier, and at the same time, the position on the carrier corresponding to the through hole is also set up to penetrate from top to bottom. The hammer seat 22, the guide rod 21 and the core hammer 2 are all above the bottom plate 11 during the detection process.

[0040] The driving mechanism includes a chain assembly 31 and a bracket 32 ​​mounted on the chain assembly 31. The chain assembly 31 can be arranged in two groups or in one group. In this embodiment, two groups of chain assemblies 31 are symmetrically arranged on both sides of the center line of the core hammer 2. The two groups of chain assemblies 31 are both vertically arranged, and the two groups of chain assemblies 31 move vertically synchronously close to one side of the core hammer 2. The chain assembly 31 includes two upper sprocket wheels 311, two lower sprocket wheels 312 and two transmission chains 313. The two upper sprocket wheels 311 are coaxially fixed and rotatably arranged on the upper part of the frame 1, and the two lower sprocket wheels 312 are coaxially fixed and rotatably arranged on the lower part of the frame 1. The two upper sprocket wheels 311 correspond to the two lower sprocket wheels 312 one by one, and are used to install the transmission chain 313. The transmission chain 313 is transmission-connected between a group of corresponding upper sprocket wheels 311 and lower sprocket wheels 312, so that the transmission chain 313 is arranged vertically. The brackets 32 are evenly spaced two or three apart along the length direction of the conveying chain 313. When the bracket 32 ​​arrives at a side close to the core piercing hammer 2 along with the conveying chain 313, the bracket 32 ​​moves upward from bottom to top, and when the bracket 32 ​​abuts against the core piercing hammer 2, the core piercing hammer 2 is lifted.

[0041] refer to Figure 2 and Figure 3 In order to keep the two chain assemblies 31 close to the side of the hammer 2 moving synchronously, a transmission assembly 33 is arranged between the two chain assemblies 31. A driving motor 34 is installed on the frame 1, and the transmission assembly 33 includes a transmission gear 331, a transmission sprocket 332 and a transmission chain 333. A transmission gear 331 is coaxially connected to the output shaft of the driving motor 34, and another transmission gear 331 is coaxially connected to the upper sprocket 311 in one group of chain assemblies 31; a transmission sprocket 332 is coaxially connected to the output shaft of the driving motor 34, and another transmission sprocket 332 is coaxially connected to the upper sprocket 311 in another group of chain assemblies 31. The transmission chain 333 is connected between the two transmission sprockets 332, and the two transmission gears 331 are externally meshed, so that the driving motor 34 can drive the two chain assemblies 31 to move at the same time through the transmission assembly 33.

[0042] refer to Figure 3, one side of the bracket 32 ​​is fixed on the conveying chain 313, and the other side of the bracket 32 ​​extends in a direction away from the conveying chain 313. When the bracket 32 ​​moves vertically at the position where the conveying chain 313 is close to the core-piercing hammer 2, the bracket 32 ​​is in a horizontal state. The two conveying chains 313 in one chain assembly 31 are arranged at intervals, and the bracket 32 ​​is located in the middle. The bracket 32 ​​is fixed to the two conveying chains 313, and the two conveying chains 313 move the bracket 32 ​​at the same time, thereby improving the stability of the bracket 32. The inside of the bracket 32 ​​is slidably connected with a telescopic rod 35, which is parallel to the bracket 32 ​​and one end of the telescopic rod 35 points to the conveying chain 313, and the other end is away from the conveying chain 313. When the bracket 32 ​​is on the side close to the core-piercing hammer 2, the telescopic rod 35 is horizontal and one end of the telescopic rod 35 extends from the bracket 32, and the telescopic rod 35 is used to abut against the core-piercing hammer 2. The release mechanism 4 can move the telescopic rod 35 to retract the telescopic rod 35 into the bracket 32 ​​, thereby releasing the core hammer 2 .

[0043] refer to Figure 4 , Figure 5 and Figure 6 The release mechanism 4 includes a main body 41 vertically slidably connected to the frame 1, and two levers 42 are provided on the main body 41, and the two levers 42 correspond to the two chain assemblies 31 respectively. Each bracket 32 ​​is provided with a rotating frame 43 inside, and the rotating frame 43 is rotatably mounted on the bracket 32. A rotating shaft 44 is passed through the rotating frame 43, and the rotating shaft 44 is horizontally arranged, and one end of the rotating shaft 44 extends from the side of the bracket 32 ​​close to the lever 42. Figure 1 , a handle 45 is provided on the rotating shaft 44 so that the handle 45 can meet the lever 42 when it moves vertically. When the bracket 32 ​​moves vertically, the handle 45 will be blocked by the lever 42 and rotate, and the lever 42 will push the handle 45, thereby driving the rotating shaft 44 to rotate. A long strip-shaped connecting hole 431 deviating from the axis of the rotating shaft 44 is provided on the rotating frame 43, and a connecting rod 46 is passed through the connecting hole 431, and the connecting rod 46 is fixedly connected to the telescopic rod 35. When the rotating frame 43 is driven by the handle 45, the connecting rod 46 is pulled by the rotating frame 43, so that the telescopic rod 35 retracts into the bracket 32, thereby releasing the core hammer 2. The bracket 32 ​​continues to move upward along with the transmission chain 313 until the handle 45 passes over the lever 42. A torsion spring 47 is provided between the rotating shaft 44 and the bracket 32, one end of the torsion spring 47 is fixed on the rotating shaft 44, and the other end is fixed on the bracket 32. The driving force of the torsion spring 47 will cause the rotating shaft 44 to drive the rotating frame 43 to return to its original position, so that the telescopic rod 35 can extend from the bracket 32 ​​again, so that the next time the conveying chain 313 drives the bracket 32 ​​to pass under the piercing hammer 2, the telescopic rod 35 can lift the piercing hammer 2 again.

[0044] refer to Figure 1 and Figure 5A height-fixing rod 48 is fixedly arranged on the main body 41, one end of which is horizontally rotatably connected to the main body 41, and the other end is a free end. The height-fixing rod 48 has two states: in the first state, the free end of the height-fixing rod 48 rotates to be located directly above the guide rod 21; in the second state, the free end of the height-fixing rod 48 is offset from directly above the guide rod 21. A return spring (not shown in the drawings of the specification) is arranged at the rotation connection between the height-fixing rod 48 and the main body 41, so that the height-fixing rod 48 can be horizontally rotated from the second state to the first state. A driving inclined block 49 is fixedly arranged on the frame 1, so that the height-fixing rod 48 can be horizontally rotated from the first state to the second state. When the height-fixing rod 48 is in the first state, the height-fixing rod 48 abuts against the upper end of the guide rod 21, limiting the height of the main body 41 relative to the guide rod 21, so that the height of the lever 42 relative to the hammer seat 22 can also be limited, so that the height of each lifting of the core hammer 2 meets the detection requirements. At this time, when the height-setting rod 48 is in the second state, the height-setting rod 48 is staggered from the guide rod 21 , so that the guide rod 21 and the drill rod 23 can be taken out upward without being blocked by the height-setting rod 48 .

[0045] refer to Figure 4 A one-way bearing is coaxially arranged on the output shaft of the driving motor 34, and is connected to the driving gear 61 through the one-way bearing. At the same time, a vertical rack 62 is fixedly arranged on the main body 41, and the rack 62 is meshed with the driving gear 61. The driving motor 34 can be selected as a three-phase motor, a servo motor or a stepping motor, and has the functions of forward and reverse rotation. When the driving motor 34 rotates forward, the driving motor 34 cannot drive the driving gear 61 to rotate through the one-way bearing, but drives the chain assembly 31 through the transmission assembly 33, so that the chain assembly 31 lifts the core hammer 2 through the bracket 32. When the driving motor 34 reverses, the driving motor 34 will drive the bracket 32 ​​on the side of the chain assembly 31 close to the core hammer 2 to move from top to bottom. At this time, in order to avoid the blocking of the handle 45 by the lever 42, one end of the lever 42 is rotatably connected to the main body 41. A limit block 411 is provided on the main body 41. The limit block 411 is located above the lever 42 and is used to limit the lever 42 from rotating upward, while the lever 42 can rotate downward. A torsion spring can be provided between the lever 42 and the main body 41, so that the lever 42 abuts against the limit block 411, and the lever 42 remains in a horizontal state and extends to a position where it can abut against the handle 45. When the drive motor 34 is reversed, the core hammer 2 and the guide rod 21 need to be removed from the drill rod 23, and the lever 42 rotates downward to enable the bracket 32 ​​to move downward without obstruction. At the same time, the drive motor 34 drives the rack 62 upward through the one-way bearing, and the main body 41 and the height-fixing rod 48 move upward at the same time, so that the height-fixing rod 48 is driven by the driving inclined block 49 to rotate horizontally.

[0046] refer to Figure 4 and Figure 5, the lower part of the driving inclined block 49 is provided with an inclined surface 491, and the inclined surface 491 gradually transitions from the upper part of the height-setting rod 48 when it is in the first state to the upper part of the height-setting rod 48 when it is in the second state. At the same time, a stopper 7 is provided below the height-setting rod 48 when it is in the second state, and the stopper 7 is movably connected to the frame 1. When the height-setting rod 48 rotates to the second state, the stopper 7 can prevent the height-setting rod 48 from falling. When the stopper 7 is removed, the height-setting rod 48 returns to the first state under the action of gravity and the return spring.

[0047] refer to Figure 1 and Figure 7 The extractor mechanism 5 includes two one-way locks 51, a driving rod 52 and a cam 53. One one-way lock 51 is arranged above the base plate 11, and the other one-way lock 51 is arranged below the base plate 11. The drill rod 23 passes through the two one-way locks 51. When the one-way lock 51 moves upward relative to the drill rod 23, the drill rod 23 is automatically locked; when the one-way lock 51 moves downward relative to the drill rod 23, the drill rod 23 will not be automatically locked. Automatic locking means that the one-way lock 51 is fixedly connected to the drill rod 23 in the length direction of the drill rod 23. A driving rod 52 is arranged on both sides of the one-way lock 51 above the base plate 11, and one end of the driving rod 52 is rotatably connected to the outer wall of the one-way lock 51, and a long strip hole is opened in the middle. A support 54 is fixedly arranged on the base plate 11, and the support 54 provides rotation support for the driving rod 52 through the long strip hole. One end of the two driving rods 52 away from the one-way lock 51 extends to the position of a group of chain assemblies 31. The cam 53 is coaxially arranged with the lower sprocket 312 in the chain assembly 31 through a one-way bearing, so that when the driving motor 34 reverses, the cam 53 rotates through the one-way bearing; when the driving motor 34 rotates forward, the cam 53 does not rotate. A fixed rod 55 is fixedly arranged at one end of the two driving rods 52 away from the one-way lock 51, and the two ends of the fixed rod 55 are fixedly connected to the two driving rods 52 respectively. A tension spring 56 is arranged between the driving rod 52 and the support 54. When the cam 53 rotates, it drives the two driving rods 52 to swing, so that the one-way lock 51 above the bottom plate 11 moves upward and drives the drill rod 23 to move; the tension spring 56 drives the one-way lock 51 to move downward and releases the drill rod 23.

[0048] refer to Figure 8 and Fig. 9The one-way lock 51 includes a shell 511, a compression spring and a plurality of locking blocks 512 arranged inside the shell 511. A receiving chamber 513 is provided at the center of the shell 511. The lower part of the receiving chamber 513 is a conical surface vertically arranged at the center line, and a plurality of slide grooves 514 along the inclination direction of the conical surface are provided on the conical surface. The locking block 512 is slidably installed in the receiving chamber 513 through the slide grooves 514, so that the locking block 512 slides up and down along the conical surface. The compression spring is located in the receiving chamber 513 and abuts against the upper surface of the locking block 512. The plurality of locking blocks 512 are distributed along the center circumference of the receiving chamber 513. The locking block 512 slides downward and can extend from the lower part of the receiving chamber 513. When the lower end of the locking block 512 is flush with the lower surface of the shell 511, the locking block 512 is separated from the outer wall of the drill rod 23. When the locking block 512 extends from the lower part of the housing 511, the locking block 512 is moved toward the middle by the action of the conical surface, thereby abutting against the outer wall of the drill rod 23, and the drill rod 23 is clamped by multiple locking blocks 512, thereby completing automatic locking. When the one-way locker 51 located above the bottom plate 11 abuts against the bottom plate 11, the locking block 512 is blocked by the bottom plate 11 and remains separated from the outer wall of the drill rod 23. An unlocking plate 8 is also provided below the one-way locker 51 located below the bottom plate 11, and a bolt 81 is threadedly connected to the unlocking plate 8. The nut of the bolt 81 is located above the bottom plate 11, and the height of the unlocking plate 8 can be adjusted by the bolt 81. When the unlocking plate 8 abuts against the one-way locker 51 below the bottom plate 11, the locking of the drill rod 23 is released; when the unlocking plate 8 moves downward and separates from the one-way locker 51, the one-way locker 51 can automatically lock the falling process of the drill rod 23.

[0049] The working process of this embodiment is as follows: First, when installing the drill rod 23 into the borehole, the one-way lock 51 below the bottom plate 11 unlocks the one-way lock on the drill rod 23, and a drill rod 23 is placed in the borehole. At this time, the staff steps on the fixed rod 55, so that the one-way lock 51 above the bottom plate 11 can prevent the drill rod 23 from falling, so that it is convenient for the staff to continue to connect another drill rod 23 or install the guide rod 21. When the core hammer 2 is installed, both one-way locks 51 are unlocked. The drive motor 34 rotates forward, and the cam 53 does not rotate through the one-way bearing, so that the drive motor 34 can drive the chain assembly 31 through the transmission assembly 33, so that the bracket 32 ​​close to the core hammer 2 moves from bottom to top, and the core hammer 2 is lifted to the position of the lever 42. The lever 42 rotates the handle 45, and the handle 45 drives the telescopic rod 35 to retract into the bracket 32, so that the telescopic rod 35 releases the core hammer 2, and the core hammer 2 hammers the hammer seat 22 after free fall. After the inspection is completed, the bolt 81 is loosened first to move the unlocking plate 8 downward, so that the one-way lock 51 below the bottom plate 11 automatically locks the drill rod 23. Remove the guide rod 21 and the core hammer 2, and drive the motor 34 to rotate in the opposite direction. At this time, the cam 53 drives the drive rod 52 to swing back and forth. When the drive rod 52 drives the one-way lock 51 above the bottom plate 11 to move upward, the drill rod 23 moves upward synchronously; when the drive rod 52 drives the one-way lock 51 above the bottom plate 11 to move downward, the one-way lock 51 below the bottom plate 11 automatically locks the drill rod 23 to prevent the drill rod 23 from falling. After taking out a drill rod 23, the staff can remove the drill rod 23 and continue to pull out the next drill rod 23 until the bottom penetrator is taken out.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A foundation detection device, comprising a frame, on which a bottom plate is arranged, characterized in that: It also includes a device taking mechanism, which includes: Two one-way lockers are respectively arranged above and below the bottom plate, wherein the middle part of the one-way locker is used to pass the drill rod; when the one-way locker moves upward relative to the drill rod, the one-way locker automatically locks the drill rod; A driving rod, one end of which is rotatably connected to a one-way lock above the bottom plate, a tension spring is provided between the driving rod and the bottom plate, and the tension spring is used to drive the one-way lock above the bottom plate to move downward until it contacts the bottom plate; the middle part of the driving rod is rotatably supported on the frame through a long strip hole; The cam is rotatably mounted on the frame, and drives the driving rod to swing through interaction with the driving rod and the tension of the tension spring, thereby realizing the up and down reciprocating movement of the one-way lock above the bottom plate; A driving mechanism is installed on the frame. When the driving mechanism rotates forward, it is used to drive the core hammer to move upward; when the driving mechanism rotates reversely, it is used to drive the cam to rotate; An unlocking plate is provided under the one-way lock under the bottom plate, and a bolt is threadedly connected to the unlocking plate, and the upper end of the bolt is located above the bottom plate. The height of the unlocking plate is adjusted by the bolt so that the unlocking plate switches the one-way lock under the bottom plate to an unlocked or automatically locked state; The driving mechanism includes a chain assembly and a bracket mounted on the chain assembly, the chain assembly includes two upper sprockets, two lower sprockets and two conveying chains, one side of the bracket is fixed on the conveying chain, and a telescopic rod is slidably provided on the other side of the bracket extending away from the conveying chain, and the bracket lifts the core hammer through the telescopic rod; the telescopic rod is connected to a release mechanism, and the release mechanism is used to retract the telescopic rod into the bracket; The release mechanism includes a main body and a height-fixing rod. The main body is vertically slidably connected to the frame, and the height-fixing rod is rotatably installed on the main body. The first state of the height-fixing rod is that the height-fixing rod is rotated to the top of the drill rod, and the second state of the height-fixing rod is that the height-fixing rod is offset from the top of the drill rod. A shifting rod is installed on the main body, and the telescopic rod is driven to retract the bracket by the shifting rod. At the same time, when the height-fixing rod is in the first state, the shifting rod limits the height of the core hammer as the bracket is lifted.

2. A foundation detection device according to claim 1, characterized in that: The one-way lock includes an outer shell, a compression spring and a plurality of locking blocks arranged in the outer shell. An accommodating cavity is opened inside the outer shell. The lower part of the accommodating cavity is a conical surface arranged vertically with the center line. The plurality of locking blocks are slidably arranged along the inclined direction of the conical surface. The compression spring abuts against the upper surface of the locking block. When the lower ends of the plurality of locking blocks are flush with the lower surface of the outer shell, the locking blocks are in a state of unlocking the drill rod.

3. A foundation detection device according to claim 1, characterized in that: The two upper sprocket wheels are coaxially fixed and rotatably installed on the upper part of the frame, the two lower sprocket wheels are coaxially fixed and rotatably installed on the lower part of the frame, the two transmission chains are respectively connected to a group of upper and lower sprocket wheels corresponding to each other, and a bracket for lifting the core hammer is installed on the two transmission chains. The cam is coaxially arranged with the lower sprocket and a one-way bearing is arranged between the cam and the lower sprocket.

4. A foundation detection device according to claim 3, characterized in that: The chain assemblies are provided with two and are respectively located on both sides of the axis of the core hammer. A transmission assembly is arranged between the two chain assemblies. The transmission assembly includes a transmission gear, a transmission sprocket and a transmission chain. A driving motor is fixedly arranged on the frame. A transmission gear is coaxially fixed on the output shaft of the driving motor. An upper sprocket in one group of chain assemblies is coaxially connected to another transmission gear. The two transmission gears are externally meshed. A transmission sprocket is coaxially fixed on the output shaft of the driving motor. Another transmission sprocket is coaxially connected to the upper sprocket in another group of chain assemblies. The transmission chain is connected between the two transmission sprockets.

5. A foundation detection device according to claim 4, characterized in that: The output shaft of the driving motor is connected to the driving gear through a one-way bearing, and a rack meshing with the driving gear is arranged on the main body, and the rack is arranged vertically; when the driving motor rotates in the opposite direction, the driving gear drives the rack to move upward; a driving bevel block is fixedly arranged on the frame, and an inclined surface is arranged at the lower part of the driving bevel block, and the inclined surface gradually transitions from the position when the height-fixing rod is in the first state to the position above the position when the height-fixing rod is in the second state from its lower end to the upper end.

6. A foundation detection device according to claim 4, characterized in that: A rotating frame is arranged inside the bracket, and the rotating frame is rotatably mounted on the bracket; a rotating shaft is passed through the rotating frame, and a handle is fixedly arranged at one end of the rotating shaft, and the handle moves in the vertical direction and rotates by abutting against the lever; the rotation of the rotating frame is used to drive the telescopic rod to perform a telescopic action; a torsion spring is arranged between the rotating shaft and the bracket, and the torsion spring is used to drive the rotating frame to return to its position after the handle is separated from the lever, so that the telescopic rod extends out of the bracket.

7. A foundation detection device according to claim 1, characterized in that: The driving rods are respectively arranged one on the front and rear sides of the one-way lock, and the ends of the two driving rods away from the one-way lock are fixedly connected by a fixing rod.

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