A ground detection device

Abstract

The application provides a foundation detection device, belonging to the technical field of foundation detection, which comprises a top base, the top base comprising a top plate, a spherical groove being formed in the middle of the bottom end of the top plate, a locking sliding groove being formed in the inner wall of the spherical groove and extending along the horizontal direction and being located in the same plane as the spherical center of the spherical groove, a locking sliding block being slidingly installed in the locking sliding groove, an installation groove being formed in the bottom end of the top plate, a guide groove being in communication between the installation groove and the locking sliding groove, the extension direction of the guide groove being the same as the extension direction of the locking sliding groove, a locking gear being rotatably installed in the installation groove, a transmission groove being formed in the end face of the locking gear, a transmission shaft being slidingly installed in the guide groove, one end of the transmission shaft extending into the transmission groove and being slidingly connected with the transmission groove, the other end of the transmission shaft being fixedly connected with the locking sliding block, avoiding deviation of the penetrator during foundation bearing capacity detection, causing the penetrator to be unable to penetrate into the ground along the vertical direction, and further affecting the detection result, so that the detection error occurs.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of foundation detection, and particularly relates to a foundation detection device. BACKGROUND

[0002] The foundation detection device can quantitatively evaluate the bearing capacity, stability and potential defects of the foundation by means of physical field detection and mechanical parameter analysis. The evaluation of the bearing capacity of the foundation usually adopts a dynamic penetration test. The test drives a specific specification of a penetrator into the soil layer by hammering the free-falling hammer, and quantifies the resistance of the soil by the number of hammering (N value) required for the penetration of 30 cm, and then evaluates the density, strength and engineering properties of the soil.

[0003] A foundation bearing capacity detection device is disclosed in a Chinese patent application file with the publication number CN119824875A, which comprises a base, a hammering assembly for hammering, a detection assembly for detecting the bearing capacity of the foundation, and an electronic counter. The top of the base is fixedly connected with a vertical plate, the top of the top plate is provided with a driving assembly, the hammering assembly is arranged on the vertical plate, the detection assembly is arranged on the vertical plate, and the connecting assembly is arranged between the hammering assembly and the detection assembly. The driving assembly is used to control the rising or falling of the hammering assembly, and the hammering assembly and the detection assembly are used to detect the bearing capacity of the foundation.

[0004] The existing foundation bearing capacity detection device usually adopts a flat car or a tripod for support. In order to ensure that the penetrator can be vertically driven into the soil layer during the detection of the bearing capacity of the foundation, the ground needs to be leveled before the detection. However, due to the support structure of the foundation detection device, it is difficult to ensure the levelness of the ground leveling, which leads to the deviation of the penetrator during the detection of the bearing capacity of the foundation, and thus affects the detection result, resulting in errors in the detection. SUMMARY

[0005] The purpose of the present application is to provide a foundation detection device, which aims to solve the problem that the penetrator is easy to deviate during the detection of the bearing capacity of the foundation in the prior art, and thus affects the detection result, resulting in errors in the detection.

[0006] To achieve the above object, the present application provides the following technical scheme: A foundation detection device, comprising a base, a support frame, a top seat and a penetrator, the top seat comprising a top plate, a spherical groove being formed in the middle of the bottom end of the top plate, a locking sliding groove being formed in the inner wall of the spherical groove and extending in the horizontal direction and being in the same plane as the spherical center of the spherical groove, a locking sliding block being slidingly installed in the locking sliding groove, an installation groove being formed in the bottom end of the top plate, a guide groove being in communication between the installation groove and the locking sliding groove, the extension direction of the guide groove being the same as that of the locking sliding groove, a locking gear being rotatably installed in the installation groove, the axis of the locking gear passing through the spherical center of the spherical groove, a transmission groove being formed in the end face of the locking gear, the extension direction of the transmission groove not being parallel to the radial direction of the locking gear, a transmission shaft being slidingly installed in the guide groove, one end of the transmission shaft extending into the transmission groove and being slidingly connected thereto, the other end of the transmission shaft being fixedly connected with the locking sliding block, the penetrator comprising a limiting shaft with the axis extending in the up-down direction, a guide rod being slidingly sleeved on the limiting shaft along the axis direction of the limiting shaft, a probe rod being connected to the bottom of the guide rod, a connecting ball being fixedly installed on the top of the limiting shaft, the connecting ball being movably installed in the spherical groove.

[0007] The present application has the following beneficial effects: By setting the connecting ball, the top plate, the spherical groove and the locking sliding block, during the penetration test, the locking sliding block is driven to move smoothly along the locking sliding groove towards the connecting ball, as the locking sliding block continuously approaches the connecting ball, the multiple locking sliding blocks will clamp the connecting ball from different directions, this clamping state effectively limits the free movement space of the connecting ball, so that the connecting ball cannot move randomly in all directions, and finally the limiting shaft is fixed. This avoids the deviation of the limiting shaft during the penetration test, so that the probe rod and the guide rod can always descend along the vertical direction during the penetration test, avoiding the deviation of the penetrator during the detection of the bearing capacity of the foundation, which causes the penetrator to be unable to penetrate the ground along the vertical direction, thereby affecting the detection result and causing errors in the detection.

[0008] The number of locking sliding grooves is multiple, the multiple locking sliding grooves are evenly distributed along the circumferential direction of the locking gear, the number of transmission grooves and guide grooves is the same as that of locking sliding grooves, and the multiple transmission grooves, locking sliding grooves and guide grooves are one-to-one corresponding.

[0009] The support frame is a channel steel extending in the vertical direction up and down, and there are four support frames, which are fixedly installed at the top four corners of the base.

[0010] The top seat further comprises two parallel transverse plates, the two ends of the two transverse plates are fixedly connected with the top ends of two adjacent support frames, and a limiting mechanism for fixing the limiting shaft is arranged between the two transverse plates.

[0011] The limiting mechanism comprises a limiting sleeve slidingly sleeved on the outer wall of the limiting shaft along the axial direction of the limiting shaft and two connecting sleeve rods, the outer wall of the limiting sleeve is slidingly installed with limiting blocks on both sides along the axial direction of the limiting sleeve, the middle part of each of the two cross plates is provided with an arc-shaped slot, the centers of the two arc-shaped slots are located on the same horizontal line as the center of the spherical slot, one end of each of the two connecting sleeve rods is slidingly installed in the two arc-shaped slots respectively, and the other end of each of the two connecting sleeve rods is slidingly sleeved with an extension connecting rod, and the end of each of the two extension connecting rods away from the connecting sleeve rod is hingedly connected with the limiting block.

[0012] The effect is that, during the penetration test, the penetrometer needs to be kept in a vertical state, so before the test, the penetrometer needs to be adjusted, specifically, the penetrometer is freely swung with the connecting ball as the center point under the action of its own gravity, when the penetrometer swings in the front-rear direction, it drives the connecting sleeve rod and the extension connecting rod to slide along the arc-shaped slot, when the penetrometer swings in the left-right direction, it drives the extension connecting rod to slide along the axial direction of the connecting sleeve rod, and at the same time, it also drives the limiting block to rotate relative to the extension connecting rod with the hinge point of the two as the shaft, avoiding the deviation of the limiting shaft during the penetration test, so that the probe rod and the guide rod can always keep descending along the vertical direction during the penetration test, avoiding the deviation of the penetrometer during the detection of the bearing capacity of the foundation, so that the penetrometer cannot penetrate the ground along the vertical direction, thereby affecting the detection result and causing errors in the detection.

[0013] The side of the cross plate close to the limiting sleeve is provided with a fixing block fixedly sleeved on the outer wall of the connecting sleeve rod, the other side of the cross plate is provided with a locking nut threadedly sleeved on the outer wall of the connecting sleeve rod, the outer wall of the end of the connecting sleeve rod close to the extension connecting rod is threadedly connected with a locking stud, the axis of the locking stud extends along the radial direction of the connecting sleeve rod, and one end of the locking stud penetrates through the connecting sleeve rod and abuts against the outer wall of the extension connecting rod.

[0014] The side of the limiting block close to the extension connecting rod is provided with a clamping groove, an hinge shaft with the axis extending along the radial direction of the extension connecting rod is rotatably installed in the clamping groove, one end of the extension connecting rod is fixedly connected with the outer wall of the hinge shaft, and the side of the limiting block is threadedly connected with a limiting stud coaxially arranged with the hinge shaft, and one end of the limiting stud penetrates through the limiting block and abuts against the end of the hinge shaft.

[0015] The effect is that, by setting the limiting sleeve, the arc-shaped groove, the connecting sleeve rod, the telescopic connecting rod and the limiting block, the penetrometer needs to be kept in a vertical state during the penetration test, so before the test, the penetrometer needs to be adjusted, specifically, the penetrometer is freely swung with the connecting ball as the center under the action of its own gravity, when the penetrometer swings in the front-back direction, it drives the connecting sleeve rod and the telescopic connecting rod to slide along the arc-shaped groove, when the penetrometer swings in the left-right direction, it drives the telescopic connecting rod to slide along the axis direction of the connecting sleeve rod, at the same time, it also drives the limiting block to rotate relative to the telescopic connecting rod with the hinge point of the two as the axis, avoiding the deviation of the limiting shaft during the penetration test, so that the probe rod and the guide rod can always keep descending in the vertical direction during the penetration test, avoiding the deviation of the penetrometer during the detection of the bearing capacity of the foundation, so that the penetrometer cannot penetrate the ground in the vertical direction, thereby affecting the detection result and causing errors in the detection.

[0016] The base includes a bottom plate, the bottom end of the support frame is fixedly connected to the top of the bottom plate, a circular hole is formed in the middle of the top end of the bottom plate, the circular hole penetrates the bottom plate, the bottom end of the penetrometer penetrates the circular hole, and universal wheels are installed at the four corners of the bottom wall of the bottom plate.

[0017] The effect is that, by setting the base, the penetrometer is installed on the base, and the universal wheels provided on the base facilitate the transfer of the entire device by the staff, and can support during the penetration test.

[0018] A limiting sliding groove extending in the radial direction of the circular hole is formed in the middle of the inner wall of the circular hole, the number of limiting sliding grooves is at least three, and the plurality of limiting sliding grooves are evenly distributed in the circumferential direction of the circular hole, and a limiting assembly is sleeved in the limiting sliding groove.

[0019] The limiting assembly includes a limiting top rod with an axis extending in the radial direction of the circular hole, one end of the limiting top rod abuts against the outer wall of the penetrometer after extending out of the limiting sliding groove, the other end of the limiting top rod is fixedly installed with a sealing piston, the top of the bottom plate is fixedly installed with an air inlet pipe, the number of air inlet pipes is the same as that of the limiting sliding grooves, one end of each of the plurality of air inlet pipes is in communication with one end of the plurality of limiting sliding grooves away from the circular hole, the other end of each of the plurality of air inlet pipes is fixedly installed with a valve, and the plurality of valves are in communication with a connecting air pipe.

[0020] The effect is that, by setting the limiting top rod, during the transfer of the device and the penetration test, the valves are closed, so that the plurality of limiting sliding grooves are no longer in communication, and the limiting top rod cannot slide into the limiting sliding groove under the pressure inside the limiting sliding groove, thereby avoiding the free swinging of the penetrometer with the connecting ball as the center during the transfer of the device or the penetration test; when the penetrometer needs to be adjusted, the valves are opened, so that the plurality of limiting sliding grooves are in communication through the air inlet pipes, the valves and the connecting air pipe, at this time, the limiting top rod can freely slide in the limiting sliding groove, at this time, the limiting top rod cannot limit the free swinging of the penetrometer with the connecting ball as the center.

[0021] The penetrator further comprises a cross peen hammer slidingly sleeved on the outer wall of the guide rod, and the top of the guide rod is fixedly installed with a limiting disc.

[0022] Compared with the prior art, the present application has the following beneficial effects:

[0023] 1. By setting the connecting ball, the top plate, the spherical groove and the locking sliding block, during the penetration test, the locking sliding block is driven to move smoothly along the locking sliding groove towards the connecting ball, and as the locking sliding block continuously approaches the connecting ball, the multiple locking sliding blocks will clamp the connecting ball from different directions, which effectively limits the free movement space of the connecting ball, so that the connecting ball cannot move randomly in all directions, and finally the limiting shaft is fixed. Avoiding the deviation of the limiting shaft during the penetration test, the probe rod and the guide rod can always keep descending along the vertical direction during the penetration test, avoiding the deviation of the penetrator during the detection of the bearing capacity of the foundation, which causes the penetrator to be unable to penetrate the ground along the vertical direction, thereby affecting the detection result and causing errors in the detection.

[0024] 2. By setting the limiting sleeve, the arc-shaped groove, the connecting sleeve rod, the telescopic connecting rod and the limiting block, during the penetration test, it is necessary to ensure that the penetrator is always in a vertical state, therefore, before the test starts, the penetrator needs to be adjusted, specifically, the penetrator is freely swung with the connecting ball as the center point under the action of its own gravity, when the penetrator swings in the front-back direction, it drives the connecting sleeve rod and the telescopic connecting rod to slide along the arc-shaped groove, when the penetrator swings in the left-right direction, it drives the telescopic connecting rod to slide along the axis direction of the connecting sleeve rod, at the same time, it also drives the limiting block to rotate relative to the telescopic connecting rod with the hinge point of the two as the axis, thereby avoiding the limiting mechanism from limiting the penetrator during the adjustment, affecting the adjustment process.

[0025] 3. By setting the limiting sleeve, the arc-shaped groove, the connecting sleeve rod, the telescopic connecting rod and the limiting block, during the penetration test, it is necessary to ensure that the penetrator is always in a vertical state, therefore, before the test starts, the penetrator needs to be adjusted, specifically, the penetrator is freely swung with the connecting ball as the center point under the action of its own gravity, when the penetrator swings in the front-back direction, it drives the connecting sleeve rod and the telescopic connecting rod to slide along the arc-shaped groove, when the penetrator swings in the left-right direction, it drives the telescopic connecting rod to slide along the axis direction of the connecting sleeve rod, at the same time, it also drives the limiting block to rotate relative to the telescopic connecting rod with the hinge point of the two as the axis, avoiding the deviation of the limiting shaft during the penetration test, so that the probe rod and the guide rod can always keep descending along the vertical direction during the penetration test, avoiding the deviation of the penetrator during the detection of the bearing capacity of the foundation, which causes the penetrator to be unable to penetrate the ground along the vertical direction, thereby affecting the detection result and causing errors in the detection. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1It is the structure schematic view of foundation detection device in the application;

[0027] Figure 2 It is the overhead structure schematic view of base in the application;

[0028] Figure 3 It is the overhead sectional structure schematic view of base in the application;

[0029] Figure 4 It is the sectional structure schematic view along A-A in the application; Figure 2 It is the sectional structure schematic view along A-A in the application;

[0030] Figure 5 It is the main sectional structure schematic view of penetrator in the application;

[0031] Figure 6 It is the overhead structure schematic view of top base in the application;

[0032] Figure 7 It is the overhead structure schematic view of top plate in the application;

[0033] Figure 8 It is the overhead sectional structure schematic view of top plate in the application;

[0034] Figure 9 It is the overhead structure schematic view of limiting mechanism in the application.

[0035] In the figure: 1, base; 11, bottom plate; 12, round hole; 13, limiting assembly; 131, limiting top rod; 132, sealing piston; 133, air inlet pipe; 134, valve; 135, connecting air pipe; 14, universal wheel; 15, limiting sliding groove; 2, support frame; 3, top base; 31, horizontal plate; 311, arc-shaped groove; 32, top plate; 321, spherical groove; 33, mounting groove; 34, locking gear; 35, transmission gear; 36, transmission groove; 37, locking sliding groove; 38, guide groove; 39, locking sliding block; 391, transmission shaft; 4, penetrator; 41, limiting shaft; 42, guide rod; 43, probe rod; 44, cross peen hammer; 45, limiting disc; 451, perforation; 46, connecting ball; 5, driving mechanism; 6, limiting mechanism; 61, limiting sleeve; 611, connecting sliding groove; 62, limiting block; 621, limiting stud; 622, connecting block; 63, connecting sleeve rod; 631, locking nut; 632, fixed block; 633, locking stud; 64, telescopic connecting rod; 65, hinged shaft. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the application will be clearly and completely described in the embodiments of the application in combination with the accompanying drawings.

[0037] Please refer to Figures 1-9The application provides the following technical scheme: a foundation detection device, comprising a base 1, a support frame 2, a top base 3, a penetrator 4, a driving mechanism 5 and a limiting mechanism 6.

[0038] Referring to Figures 1-4 As shown in the figure, the base 1 comprises a bottom plate 11. A circular hole 12 penetrating through the bottom plate 11 is formed in the middle of the top end of the bottom plate 11, and the bottom end of the penetrator 4 penetrates through the circular hole 12. Universal wheels 14 are installed at the four corners of the bottom wall of the bottom plate 11. A limiting sliding groove 15 extending along the radial direction of the circular hole 12 is formed in the inner wall of the circular hole 12, the number of the limiting sliding grooves 15 is at least three, and the plurality of limiting sliding grooves 15 are uniformly distributed along the circumferential direction of the circular hole 12, and the limiting assembly 13 is slidingly sleeved in the limiting sliding groove 15.

[0039] The limiting assembly 13 comprises a limiting top rod 131 with the axis extending along the radial direction of the circular hole 12. One end of the limiting top rod 131 is conical and protrudes out of the limiting sliding groove 15 and abuts against the outer wall of the penetrator 4, and the other end is fixedly installed with a sealing piston 132. An air inlet pipe 133 is fixedly installed on the top of the bottom plate 11, and the number of the air inlet pipes 133 is the same as that of the limiting sliding grooves 15. One end of each of the plurality of air inlet pipes 133 is in communication with one end of each of the plurality of limiting sliding grooves 15 away from the circular hole 12, the other end of each of the plurality of air inlet pipes 133 is fixedly installed with a valve 134, and the plurality of valves 134 are in communication with a connecting air pipe 135. The limiting sliding groove 15 is filled with gas, and the internal pressure is greater than the external atmospheric pressure.

[0040] When the foundation detection device is transported or the device is used for the penetration test, the valves 134 are closed so that the gas in the plurality of limiting sliding grooves 15 cannot flow, and thus the limiting top rod 131 cannot slide, and thus the movement of the penetrator 4 along the radial direction is limited.

[0041] Referring to Figure 1 As shown in the figure, the support frame 2 has four, and the four support frames 2 are all channel steels extending upward and downward along the vertical direction, and the bottom ends of the four channel steels are fixedly installed at the four corners of the top of the bottom plate 11.

[0042] Referring to Figure 1 , Figures 6-8 As shown in the figure, the top base 3 comprises a horizontal plate 31, a top plate 32, a locking gear 34, a transmission gear 35 and a locking sliding block 39.

[0043] The horizontal plate 31 has two and is arranged in parallel, and the two ends of the two horizontal plates 31 are fixedly connected with the top ends of two adjacent support frames 2 respectively.

[0044] The middle of the bottom end of the top plate 32 is provided with a spherical groove 321, the inner wall of the spherical groove 321 is provided with a locking sliding groove 37 extending in the horizontal direction and located in the same plane as the spherical center of the spherical groove 321, the bottom end of the top plate 32 is provided with a mounting groove 33, the mounting groove 33 is communicated with the locking sliding groove 37, and the extension direction of the guide groove 38 is the same as the extension direction of the locking sliding groove 37. The locking sliding block 39 is slidingly installed in the locking sliding groove 37, the locking gear 34 is rotatably installed in the mounting groove 33, and the axis of the locking gear 34 passes through the spherical center of the spherical groove 321, the end face of the locking gear 34 is provided with a transmission groove 36, and the extension direction of the transmission groove 36 is not parallel to the radial direction of the locking gear 34, so that the transmission shaft 391 can drive the locking sliding block 39 to slide when the locking gear 34 rotates. The transmission shaft 391 is slidingly installed in the guide groove 38, one end of the transmission shaft 391 extends into the transmission groove 36 and is slidingly connected with the transmission groove 36, the other end of the transmission shaft 391 is fixedly connected with the locking sliding block 39, and the transmission gear 35 is rotatably installed in the mounting groove 33 and is in meshing connection with the locking gear 34.

[0045] The driving mechanism 5 is fixedly installed on the top of the top plate 32, and in this embodiment, the driving mechanism 5 is preferably a motor, and the output shaft of the motor is in transmission connection with the transmission gear 35 after rotating through the top plate 32. Before the penetration test, open the valve 134, at this time the penetrator 4 is automatically adjusted to the vertical direction under the action of its own gravity. Start the driving mechanism 5, the driving mechanism 5 drives the transmission gear 35 and the locking gear 34 to rotate, at this time the locking gear 34 drives the transmission shaft 391 and the locking sliding block 39 to slide along the locking sliding groove 37 through the transmission groove 36 and the guide groove 38, thereby enabling the locking sliding block 39 to lock and fix the top of the penetrator 4, avoiding the penetrator 4 from deviating in the radial direction during the penetration test.

[0046] Reference Figure 5 As shown in the figure, the penetrator 4 includes a limiting shaft 41, a guide rod 42, a probe rod 43, a cross hammer 44, a limiting disc 45 and a connecting ball 46. The axis of the limiting shaft 41 extends in the up-down direction, the connecting ball 46 is movably installed in the spherical groove 321 and is fixedly connected with the top of the limiting shaft 41, the guide rod 42 is slidingly sleeved on the limiting shaft 41 along the axis direction of the limiting shaft 41, the probe rod 43 is installed at the bottom of the guide rod 42, and in this example, the guide rod 42 and the probe rod 43 are preferably detachably connected, and in other embodiments, the two can also be fixedly connected. The cross hammer 44 is slidingly sleeved on the outer wall of the guide rod 42 along the axis direction of the guide rod 42, the top of the cross hammer 44 is provided with connecting holes on both sides, the limiting disc 45 is fixedly installed on the top of the guide rod 42, the top of the limiting disc 45 is provided with through holes 451 corresponding to the two connecting holes on both sides, the through holes 451 penetrate the limiting disc 45, one end of the traction rope is fixedly connected with the connecting hole, and the other end of the traction rope is connected with the external equipment after penetrating the through hole 451.

[0047] In the foundation bearing capacity penetration test, the drawstring is used to pull the cross hammer 44 to make it rise along the axis direction of the guide rod 42. When the top of the cross hammer 44 contacts the limiting disc 45, the drawstring is loosened, at which time the cross hammer 44 will descend along the axis direction of the guide rod 42 under the action of its own gravity and hammer the probe rod 43, so as to make the probe rod 43 penetrate into the foundation.

[0048] Reference Figure 1 、 Figure 5 and Figure 9 As shown in the drawings, the middle part of each of the two cross plates 31 is provided with an arc-shaped slot 311, and the centers of the two arc-shaped slots 311 and the center of the spherical slot 321 are located on the same horizontal straight line. The limiting mechanism 6 comprises a limiting sleeve 61, a limiting block 62, a connecting sleeve rod 63, an extension connecting rod 64 and a hinged shaft 65.

[0049] The limiting sleeve 61 slides up and down along the axis direction of the limiting shaft 41, and is sleeved on the outer wall of the limiting shaft 41. The outer wall of the limiting sleeve 61 is provided with a connecting sliding groove 611 on both sides.

[0050] The limiting block 62 is provided in pairs and symmetrically arranged on both sides of the limiting sleeve 61. The middle part of the side of the limiting block 62 close to the limiting sleeve 61 is fixedly installed with a connecting block 622 by a reliable way such as welding or bolt fixing, and the connecting block 622 is slidingly sleeved in the connecting sliding groove 611, so that the limiting block 62 can slide up and down along the axis direction of the limiting sleeve 61 under the joint action of the connecting block 622 and the connecting sliding groove 611 and is installed on the outer wall of the limiting sleeve 61.

[0051] The connecting sleeve rod 63 is also provided in pairs and symmetrically arranged on both sides of the limiting sleeve 61, corresponding to the positions of the limiting block 62. One end of each of the two connecting sleeve rods 63 is slidingly installed in the arc-shaped slot 311. The side of the cross plate 31 close to the limiting sleeve 61 is provided with a fixing block 632, which is fixedly sleeved on the outer wall of the connecting sleeve rod 63 by interference fit or welding, and the other side of the cross plate 31 is provided with a locking nut 631, which is threadedly sleeved on the outer wall of the connecting sleeve rod 63. By rotating the locking nut 631, the distance between the locking nut 631 and the fixing block 632 can be adjusted, so as to lock or loosen the connecting sleeve rod 63.

[0052] The locking stud 633 is threadedly connected to the outer wall of the connecting sleeve rod 63 near one end of the telescopic connecting rod 64. The telescopic connecting rod 64 also has two, symmetrically arranged on both sides of the limiting sleeve 61, and coordinated with the positions of the connecting sleeve rod 63 and the limiting block 62. One end of the two telescopic connecting rods 64 is respectively slidably sleeved on the side of the connecting sleeve rod 63 near the limiting sleeve 61. This sliding sleeve connection allows the telescopic connecting rod 64 to extend and retract within the connecting sleeve rod 63, thereby adjusting the length and position of the penetrator 4. The axis of the locking stud 633 extends along the radial direction of the connecting sleeve rod 63, and its one end penetrates the connecting sleeve rod 63 and abuts against the outer wall of the telescopic connecting rod 64. By rotating the locking stud 633, the compression force of the telescopic connecting rod 64 can be adjusted, thereby controlling the sliding of the telescopic connecting rod 64 within the connecting sleeve rod 63.

[0053] The limiting block 62 is provided with a clamping groove near one side of the telescopic connecting rod 64. The hinge shaft 65 has an axis extending along the radial direction of the telescopic connecting rod 64, and its two ends are respectively rotatably installed on the two opposite side walls of the clamping groove. This rotatable installation allows the hinge shaft 65 to freely rotate within the clamping groove, thereby ensuring flexible connection between the telescopic connecting rod 64 and the limiting block 62. One end of the telescopic connecting rod 64 is fixedly connected to the outer wall of the hinge shaft 65, and the fixing method can be welding, bolt connection, etc., to ensure the firmness of the connection. One side of the limiting block 62 is threadedly connected to a limiting stud 621, which is coaxially arranged with the hinge shaft 65. One end of the limiting stud 621 penetrates the limiting block 62 and abuts against the end of the hinge shaft 65. By rotating the limiting stud 621, the compression force of the hinge shaft 65 can be adjusted, thereby limiting the rotation of the hinge shaft 65.

[0054] Before the foundation bearing capacity penetration test, after the adjustment of the penetrator 4 is completed, the locking nut 631 is rotated to move in the direction of the horizontal plate 31 under the action of the threaded connection with the connecting sleeve rod 63, thereby abutting against the horizontal plate 31, so as to limit the connecting sleeve rod 63 from sliding along the arc-shaped groove 311. The locking stud 633 is rotated to move in the direction of the telescopic connecting rod 64 under the action of the threaded connection with the connecting sleeve rod 63, thereby compressing the telescopic connecting rod 64 so that it cannot slide along the connecting sleeve rod 63. The limiting stud 621 is rotated to move in the direction of the hinge shaft 65 under the action of the threaded connection with the limiting block 62, thereby compressing the hinge shaft 65 so that it cannot rotate about its axis.

[0055] The implementation principle of the embodiment of the present application is that: during the foundation bearing capacity penetration test, the foundation to be detected is leveled, and then the detection device is pushed to the leveled ground. The valve 134 is opened, at this time, the plurality of limiting sliding grooves 15 are communicated through the air inlet pipe 133, the valve 134 and the connecting air pipe 135, so that the limiting jack 131 can freely slide along the limiting sliding groove 15. At this time, the penetrator 4 starts to automatically adjust under the action of its own gravity, at this time, the penetrator 4 moves in the radial direction with the connecting ball 46 as the center, so that the axis of the penetrator 4 can extend in the vertical direction. After the adjustment is completed, the valve 134 is closed, so that the plurality of limiting sliding grooves 15 are no longer communicated, at this time, the limiting jack 131 cannot slide any more, and the movement of the penetrator 4 in the radial direction is limited.

[0056] The driving mechanism 5 is started to drive the locking gear 34 and the transmission gear 35 to rotate. With the rotation of the locking gear 34, the transmission shaft 391 drives the locking sliding block 39 to move along the locking sliding groove 37 to the direction of the connecting ball 46 under the action of the transmission groove 36 and the guide groove 38, and clamps and limits the connecting ball 46 so that it cannot move freely, and thus the limiting shaft 41 always remains in the vertical direction, thereby limiting the movement of the penetrator 4 in the radial direction.

[0057] When the penetrator 4 automatically adjusts under the action of its own gravity, it can drive the connecting sleeve rod 63 to slide along the arc-shaped groove 311. At the same time, since the limiting block 62 can slide along the axis direction of the limiting sleeve 61, and the telescopic connecting rod 64 is hinged with the limiting block 62, when the penetrator 4 deviates to the direction of the connecting sleeve rod 63, the telescopic connecting rod 64 and the limiting block 62 rotate relative to each other, and drive the telescopic connecting rod 64 to slide on the connecting sleeve rod 63, thereby enabling the penetrator 4 to freely deflect in this direction.

[0058] After the automatic adjustment of the penetrator 4 is completed, the locking nut 631 is rotated to move in the direction of the horizontal plate 31 under the action of the threaded connection with the connecting sleeve rod 63, thereby enabling the locking nut 631 to abut against the horizontal plate 31, so as to limit the connecting sleeve rod 63 from sliding along the arc-shaped groove 311. The locking stud 633 is rotated to move in the direction of the telescopic connecting rod 64 under the action of the threaded connection with the connecting sleeve rod 63, thereby pressing the telescopic connecting rod 64, so that it cannot slide along the connecting sleeve rod 63. The limiting stud 621 is rotated to move in the direction of the hinge shaft 65 under the action of the threaded connection with the limiting block 62, thereby pressing the hinge shaft 65, so that it cannot rotate about its axis, and thus the movement of the penetrator 4 in the radial direction is limited.

[0059] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the present application.

Claims

1. A foundation testing device, comprising a base (1), a support frame (2), a top seat (3), and a penetrator (4), characterized in that, The top seat (3) includes a top plate (32). A spherical groove (321) is provided at the center of the bottom end of the top plate (32). A locking slide groove (37) extending horizontally and located in the same plane as the center of the spherical groove (321) is provided on the inner wall of the spherical groove (321). A locking slider (39) is slidably installed in the locking slide groove (37). An installation groove (33) is provided at the bottom end of the top plate (32). A guide groove (38) is connected between the installation groove (33) and the locking slide groove (37). The extension direction of the guide groove (38) is the same as the extension direction of the locking slide groove (37). A locking gear (34) is rotatably installed in the installation groove (33). The axis of the locking gear (34) passes through the center of the spherical groove (321). A transmission groove (36) is provided on the end face of (34). The extension direction of the transmission groove (36) is not parallel to the radial direction of the locking gear (34). A transmission shaft (391) is slidably installed in the guide groove (38). One end of the transmission shaft (391) extends into the transmission groove (36) and is slidably connected to it. The other end of the transmission shaft (391) is fixedly connected to the locking slider (39). The penetrator (4) includes a limiting shaft (41) whose axis extends in the up and down direction. A guide rod (42) is slidably sleeved on the limiting shaft (41) along its axis direction. A probe rod (43) is connected to the bottom of the guide rod (42). A connecting ball (46) is fixedly installed on the top of the limiting shaft (41). The connecting ball (46) is movably installed in the spherical groove (321).

2. The foundation testing device according to claim 1, characterized in that: There are multiple locking grooves (37), which are evenly distributed along the circumference of the locking gear (34). The number of transmission grooves (36) and guide grooves (38) is the same as the number of locking grooves (37). The multiple transmission grooves (36), locking grooves (37) and guide grooves (38) correspond one-to-one.

3. The foundation testing device according to claim 1, characterized in that: The support frame (2) is a channel steel extending vertically up and down. There are four support frames (2), and the four support frames (2) are respectively fixedly installed at the top four corners of the base (1). The top seat (3) also includes two parallel horizontal plates (31), the two ends of which are fixedly connected to the top ends of two adjacent support frames (2), and a limiting mechanism (6) for fixing the limiting shaft (41) is provided between the two horizontal plates (31).

4. A foundation testing device according to claim 3, characterized in that: The limiting mechanism (6) includes a limiting sleeve (61) that slides up and down along the axis of the limiting shaft (41) and is fitted onto its outer wall, and two connecting rods (63). Limiting blocks (62) are slidably installed on both sides of the outer wall of the limiting sleeve (61) along its axis. Arc grooves (311) are opened in the middle of the two horizontal plates (31). The center of the two arc grooves (311) is on the same horizontal straight line as the center of the spherical groove (321). One end of the two connecting rods (63) is slidably installed in the two arc grooves (311). Telescopic connecting rods (64) are slidably fitted in the other end of the two connecting rods (63). The ends of the two telescopic connecting rods (64) away from the connecting rods (63) are hinged to the two limiting blocks (62).

5. A foundation testing device according to claim 4, characterized in that: The horizontal plate (31) has a fixing block (632) fixedly sleeved on the outer wall of the connecting sleeve rod (63) on one side near the limiting sleeve (61). The other side of the horizontal plate (31) has a locking nut (631) threadedly sleeved on the outer wall of the connecting sleeve rod (63). The outer wall of the connecting sleeve rod (63) near the telescopic connecting rod (64) is threaded with a locking stud (633). The axis of the locking stud (633) extends along the radial direction of the connecting sleeve rod (63). One end of the locking stud (633) passes through the connecting sleeve rod (63) and abuts against the outer wall of the telescopic connecting rod (64).

6. A foundation testing device according to claim 4, characterized in that: The limiting block (62) has a slot on one side near the telescopic connecting rod (64). A hinge shaft (65) with its axis extending radially along the telescopic connecting rod (64) is rotatably installed in the slot. One end of the telescopic connecting rod (64) is fixedly connected to the outer wall of the hinge shaft (65). A limiting stud (621) coaxially arranged with the hinge shaft (65) is threaded to one side of the limiting block (62). One end of the limiting stud (621) passes through the limiting block (62) and abuts against the end of the hinge shaft (65).

7. A foundation testing device according to claim 1, characterized in that: The base (1) includes a base plate (11), the bottom end of the support frame (2) is fixedly connected to the top of the base plate (11), a round hole (12) is opened in the middle of the top of the base plate (11), the round hole (12) penetrates the base plate (11), the bottom end of the penetrator (4) passes through the round hole (12), and universal wheels (14) are installed at the four corners of the bottom wall of the base plate (11).

8. A foundation testing device according to claim 7, characterized in that: A limiting groove (15) extending radially is provided in the middle of the inner wall of the circular hole (12). There are at least three limiting grooves (15). The multiple limiting grooves (15) are evenly distributed along the circumferential direction of the circular hole (12). A limiting component (13) is slidably sleeved in the limiting groove (15).

9. A foundation testing device according to claim 8, characterized in that: The limiting assembly (13) includes a limiting top rod (131) whose axis extends radially along the circular hole (12). One end of the limiting top rod (131) extends out of the limiting slide groove (15) and abuts against the outer wall of the penetrator (4). A sealing piston (132) is fixedly installed at the other end of the limiting top rod (131). An air inlet pipe (133) is fixedly installed on the top of the base plate (11). The number of air inlet pipes (133) is the same as the number of limiting slide grooves (15). One end of the multiple air inlet pipes (133) is connected to the end of the multiple limiting slide grooves (15) away from the circular hole (12). A valve (134) is fixedly installed at the other end of the multiple air inlet pipes (133). A connecting air pipe (135) is connected between the multiple valves (134).

10. A foundation testing device according to claim 1, characterized in that: The penetrator (4) also includes a mandrel (44) that is slidably sleeved on the outer wall of the guide rod (42), and a limit plate (45) is fixedly installed on the top of the guide rod (42).

Images