A foundation engineering detection device based on sand pouring method

Abstract

The application relates to the field of compaction degree detection devices, in particular to a foundation engineering detection device based on the sand pouring method, which comprises a chassis, a through hole is formed in the chassis; a puncher which can punch holes on the ground of the foundation to be detected through the through hole; a sand container which is used for storing standard sand and can pour sand into the holes punched by the puncher; a mounting seat, a clamping mechanism for clamping the chassis and a switching mechanism for switching the positions of the sand container and the puncher are installed on the mounting seat; the switching mechanism comprises a driving motor and a rotating disc fixedly connected to the output end of the driving motor, the puncher and the sand container are installed on the end of the rotating disc far from the driving motor, and the installation positions of the puncher and the sand container on the rotating disc are symmetrical with the rotating shaft of the rotating disc as the axis of symmetry; after punching, the positions of the puncher and the sand container are switched by the driving of the switching mechanism, and the sand container is placed on the chassis, so that the sand container can pour sand into the holes, manual punching and sand pouring are not needed, the device is convenient and fast, time and labor are saved, and manual errors can be reduced.

Description

Technical Field

[0001] This application relates to the field of compaction testing devices, and in particular to a foundation engineering testing device based on the sand cone method. Background Technology

[0002] The sand cone method is one of the commonly used methods for on-site determination of compaction. In the existing sand cone method operation steps, drilling and sand filling are all done manually. The manual operation steps are numerous and cumbersome, time-consuming and labor-intensive, and errors are easy to occur in actual operation, which can cause large errors and result in inaccurate measurement results. Summary of the Invention

[0003] To address the issue of significant errors that can occur with manual operation, this application provides a foundation engineering testing device based on the sand cone method.

[0004] The foundation engineering testing device based on the sand cone method provided in this application adopts the following technical solution:

[0005] A foundation engineering testing device based on the sand filling method, capable of performing sand filling tests on the foundation to be tested, includes: a chassis with a through hole; a drilling machine capable of drilling holes in the ground of the foundation to be tested through the through hole; a sand container for storing standard sand and capable of filling sand into the holes drilled by the drilling machine; and a mounting base with a clamping mechanism for holding the chassis and a switching mechanism for switching the positions of the sand container and the drilling machine; the switching mechanism includes a drive motor and a turntable fixedly connected to the output end of the drive motor, the drilling machine and the sand container are mounted on the end of the turntable away from the drive motor, and the mounting positions of the drilling machine and the sand container on the turntable are symmetrical about the rotation axis of the turntable.

[0006] By adopting the above technical solution, a switching mechanism is set on the mounting base. After the drilling machine drills a hole in the ground of the foundation to be tested, the drive motor drives the turntable to rotate, causing the drilling machine and the sand container to revolve around the rotation axis of the turntable, switching the positions of the sand container and the drilling machine. That is, the drilling machine moves away from the base and the sand container moves closer to the base. When the sand container is directly in front of the hole drilled by the drilling machine, the sand container can be opened manually to pour standard sand into the hole drilled by the drilling machine. It is convenient and quick, reduces manual digging and sand filling, saves time and labor, and reduces human error. During the drilling and sand filling process, the clamping mechanism clamps the base to keep the base stable and prevents the base from shaking and affecting the digging and sand filling.

[0007] Further preferably, the turntable has two rotating wheels rotatably connected inside. The two rotating wheels are symmetrically arranged about the rotation axis of the turntable, and the rotation axes of the two rotating wheels are parallel to the rotation axis of the turntable. The punching machine is fixed on one of the rotating wheels, and the sand container is fixed on the other rotating wheel. A transmission component is connected between the drive motor and the rotating wheels. While the drive motor drives the turntable to rotate, it also drives the two rotating wheels to rotate through the transmission component, so that the rotating wheels and the turntable rotate in opposite directions but at the same speed.

[0008] By adopting the above technical solution, the drive motor drives the turntable to rotate to adjust the position of the punch and the sand container. At the same time, the drive motor drives the transmission component to make the two wheels rotate at the same speed but in opposite directions. This ensures that the punch and the sand container mounted on the wheels do not rotate with the turntable, that is, they only revolve around the turntable and do not rotate on their own axis, which improves safety and avoids leakage of standard sand from the sand container, which would cause changes in the weight of the sand container and affect the detection accuracy.

[0009] Further preferably, the transmission assembly includes a connecting rod and five sequentially meshing transmission gears with a transmission ratio of 1. The connecting rod is fixedly connected to the output end of the drive motor, the middle transmission gear is fixedly connected to the mounting base, and the other four transmission gears are rotatably connected to the connecting rod. One of the rotating wheels is fixedly connected to one of the two outermost transmission gears, and the other rotating wheel is fixedly connected to the other of the two outermost transmission gears, with the rotating wheel coinciding with the axis of the corresponding transmission gear.

[0010] By adopting the above technical solution, the connecting rod is driven to rotate under the drive of the drive motor, while the middle transmission gear is fixed to the mounting base. At this time, the other two transmission gears meshing with the middle transmission gear revolve with the connecting rod and rotate on their own axis. Their rotation direction is the same as the rotation direction of the connecting rod. The two outermost transmission gears also revolve with the connecting rod and can also rotate on their own axis. Their rotation direction is opposite to the direction of the connecting rod. Then, the two outermost transmission gears drive the two rotating wheels to rotate, thereby realizing that the rotating wheels and the turntable have the same speed but opposite directions.

[0011] Further preferably, the clamping mechanism includes a clamping assembly for clamping the chassis. The clamping assembly includes a clamping cylinder mounted on the mounting base and a chuck fixedly connected to the piston rod of the clamping cylinder. The chuck includes a bidirectional cylinder fixedly connected to the piston rod of the clamping cylinder, and a clamping rod is fixedly connected to the output end of the bidirectional cylinder.

[0012] By adopting the above technical solution, clamping is performed by a clamping cylinder, and the clamping rod is driven by a bidirectional cylinder, which can clamp the chassis from all sides, ensuring clamping stability.

[0013] Further preferably, the clamping mechanism also includes a lifting assembly capable of raising and lowering the chassis. The lifting assembly includes a lifting motor fixed on the mounting base, a drive shaft connected to the output end of the lifting motor, a lifting platform threaded to the drive shaft, and a clamping cylinder mounted on the lifting platform.

[0014] By adopting the above technical solution, the lifting motor drives the lifting platform to rise, which in turn drives the clamping components and the chassis to rise, making it easier for manual cleaning of the mud or standard sand on the chassis.

[0015] Further preferably, a clutch assembly is connected between the lifting motor and the drive shaft. The clutch assembly includes a fixed gear fixedly connected to the output end of the lifting motor, a movable gear splinedly connected to the drive shaft, a lever fixedly connected to the output end of the drive motor, an abutment block fixedly connected to the movable gear, and an elastic element fixedly connected between the abutment block and the drive shaft. The drive motor drives the lever to rotate, so that the lever can abut against the abutment block and push the movable gear to move axially along the drive shaft, so that the movable gear and the fixed gear can mesh. After the lever disengages from the abutment block, the elastic force of the elastic element drives the movable gear to disengage from the fixed gear.

[0016] By adopting the above technical solution, the turntable rotates under the drive of the drive motor, so that the punch and the sand bottle are moved away from the top of the chassis. At the same time, the lever can push the moving gear to move, so that the moving gear meshes with the fixed gear. Thus, the chassis can rise under the drive of the lifting component, improving the synchronization between the lifting component and the turntable. When the punch or the sand bottle is above the chassis, the chassis cannot rise, avoiding collisions and improving safety. The drive motor continues to drive the lever to rotate until the lever disengages from the abutment block. At this time, under the elastic force of the elastic element, the moving gear disengages from the fixed gear, enhancing the linkage.

[0017] Further preferably, the clamping mechanism also includes a tilting assembly capable of tilting the chassis. The tilting assembly includes a fixed rack fixed on the mounting base and a connecting gear rotatably connected to the lifting platform. The clamping assembly is installed at the end of the connecting gear away from the lifting platform, and the connecting gear can mesh with the fixed rack.

[0018] By adopting the above technical solution, during the lifting process of the clamping mechanism and the chassis, the connecting gear rotates under the action of the fixed rack, thereby driving the clamping mechanism and the chassis to flip, which makes it easy to clean the debris on the chassis before testing; when it is necessary to manually clean and collect the mud or standard sand on the chassis, the lifting motor drives the lifting platform to rise, and stops the lifting motor before the connecting gear meshes with the fixed rack to avoid the chassis flipping and causing the mud or standard sand on the chassis to fall off.

[0019] Further preferably, the rotating wheel used to install the sand container is provided with a connecting assembly, which includes an adjusting motor fixed on the rotating wheel and a clamping arm threadedly connected to the piston rod of the adjusting motor. The clamping arm is used to clamp the sand container, and a buffer is fixedly connected between the clamping arm and the rotating wheel.

[0020] By adopting the above technical solution, when the switching mechanism switches the sand container to the top of the chassis and is ready to start filling the sand, the motor drives the clamping arm to lower the sand container, placing the sand container on the chassis and aligning the lower opening of the sand container with the through hole of the chassis. The buffer can cushion the sand container when it comes into contact with the chassis, reducing the vibration of the sand container and preventing the standard sand from being shaken out from the upper opening of the sand container.

[0021] Further preferably, the punching machine includes a punching assembly, which includes a feed motor fixed on a rotating wheel, a feed screw connected to the output end of the feed motor, a connecting platform threaded to the feed screw, a punching motor fixedly mounted on the connecting platform, a blade shaft connected to the output end of the punching motor, and blades mounted on the blade shaft. The blade shaft includes an inner shaft and an outer shaft. The inner shaft is fixed to the output end of the punching motor, and the outer shaft is sleeved on the outside of the inner shaft. An internal gear is fixedly mounted on the inner shaft, and an external gear that meshes with the internal gear is fixedly mounted on the outer shaft. The circumferential width of the tooth profile of the internal gear is smaller than the tooth pitch of the external gear. The blades include a fixed blade fixedly connected to the inner shaft and an adjusting blade fixed to the outer shaft. The fixed blade and the adjusting blade can be combined to form a closed shape along the axial direction of the blade shaft.

[0022] By adopting the above technical solution, the drilling motor drives the blade to rotate, and in conjunction with the feed motor, it drives downward drilling. In addition, the circumferential width of the tooth profile on the inner shaft is smaller than the tooth pitch of the outer gear. When the drilling motor drives the inner shaft to rotate in one direction, the tooth profile of the inner gear abuts against one side of the tooth profile of the outer gear. At this time, the fixed blade and the adjusting blade are not closed along the blade shaft axis. When the drilling motor drives the inner shaft to rotate in the other direction, the tooth profile of the inner gear abuts against the other side of the tooth profile of the outer gear. At this time, the fixed blade and the adjusting blade form a closed shape along the blade shaft axis. At this time, the connecting table is driven to rise by the feed motor. The fixed blade and the adjusting blade can remove the soil in the hole without the need for manual digging, which is convenient and quick.

[0023] Further preferably, the punching machine also includes a material collection assembly, which includes a material collection cylinder fixed on the connecting platform and a cover fixed on the piston rod of the material collection cylinder. The cover is fitted on the outside of the outer shaft, and the fixed blade and the adjusting blade are combined to form a closed shape along the axial direction of the blade shaft, which is adapted to the axial section of the cover.

[0024] By adopting the above technical solution, before the feed motor drives the connecting platform to rise and remove the soil from the hole, the collecting cylinder drives the cover to move down and insert it into the soil, so that the bottom of the cover touches the blade. The cover and the blade form a space to contain the soil. At this time, the feed motor drives the connecting platform to rise again, and the collecting cylinder drives the cover to rise at the same time, so that the blade and the cover rise synchronously, removing the soil from the hole and preventing the soil from falling off the blade, which facilitates the collection of soil.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. In this application, after the punching machine punches a hole, the position of the punching machine and the sand bottle is switched by the switching mechanism, and the sand bottle is placed on the chassis to facilitate the filling of sand into the hole. There is no need for manual punching and filling of sand, which is convenient, quick, time-saving, labor-saving and reduces human error.

[0027] 2. In a further embodiment of this application, the transmission component in the switching mechanism enables the rotating wheel to revolve around the sun without rotating on its own axis, thus preventing the drilling machine and the sand container from rotating on their own axis, improving safety, and also preventing the leakage of standard sand from the sand container, which would cause changes in the weight of the sand container and affect the detection accuracy.

[0028] 3. In a further embodiment of this application, a lever is provided for linkage so that when the punching machine or sand container is above the chassis, the driven gear will not mesh with the driving gear, and the chassis will not rise, thus avoiding collision between the chassis and the punching machine or sand container.

[0029] 4. In a further embodiment of this application, the drilling machine is provided with an inner shaft and an outer shaft, which are meshed by an inner gear and an outer gear. The angle between the fixed blade and the adjusting blade is adjusted by the driving direction of the drilling motor. When it is necessary to remove the soil, the fixed blade and the adjusting blade form an axially closed shape, which, together with the cover, removes the soil, preventing the soil from falling during the removal process, reducing manual operation, and making it convenient, fast and efficient. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a foundation engineering testing device based on the sand cone method;

[0031] Figure 2 This is a three-dimensional cross-sectional diagram of the chassis;

[0032] Figure 3 This is a schematic diagram of the detection device in Example 2;

[0033] Figure 4 This is a three-dimensional structural diagram of the detection device in Embodiment 3;

[0034] Figure 5 This is a front sectional view of the mounting base;

[0035] Figure 6 This is a schematic diagram of the three-dimensional connection structure of the transmission components, turntable, and drive motor;

[0036] Figure 7 This is a side sectional view of the mounting base;

[0037] Figure 8 yes Figure 7 Enlarged diagram of A in the middle;

[0038] Figure 9 This is a three-dimensional structural diagram of the sand container and its connecting components;

[0039] Figure 10 This is a 3D structural diagram of a hole puncher;

[0040] Figure 11 This is a three-dimensional cross-sectional diagram of a hole puncher;

[0041] Figure 12 This is a frontal cross-sectional view of a hole puncher;

[0042] Figure 13 This is a top-view cross-sectional diagram of the external gear and the internal gear;

[0043] Figure 14 This is a three-dimensional structural diagram of the blade shaft and the blade.

[0044] Explanation of reference numerals in the attached drawings: 1. Mounting base; 11. Clamping mechanism; 111. Clamping assembly; 1111. Clamping cylinder; 1113. Two-way cylinder; 1114. Clamping rod; 112. Lifting assembly; 1121. Lifting motor; 1122. Drive shaft; 1123. Lifting platform; 113. Clutch assembly; 1131. Fixed gear; 1132. Moving gear; 1133. Lever; 1134. Abutment block; 1135. Elastic element; 114. Tilting assembly; 1141. Fixed rack; 1142. Connecting gear; 12. Switching mechanism; 121. Drive motor; 122. Turntable; 123. Rotating wheel; 124. Mounting bracket; 13. Transmission assembly; 131. Connecting rod; 132. Transmission gear; 2. Chassis; 21. Through hole; 3. Drilling machine; 31. Drilling assembly; 311. Feed motor; 312. Feed screw; 313. Drilling motor; 314. Blade shaft; 3141. Inner shaft; 3142. Outer shaft; 3143. Internal gear; 3144. External gear; 315. Blade; 3151. Fixed blade; 3152. Adjusting blade; 316. Connecting platform; 32. Material collection assembly; 321. Material collection cylinder; 322. Cover; 4. Sand container; 5. Connecting assembly; 51. Adjusting motor; 52. Clamping arm; 53. Buffer. Detailed Implementation

[0045] The following is in conjunction with the appendix Figure 1 -Appendix Figure 14 This application will be described in further detail.

[0046] This application discloses a foundation engineering testing device based on the sand cone method, capable of performing sand cone tests on the foundation to be tested. The sand cone test generally includes steps such as excavation, soil sampling, and sand filling, all of which are usually performed manually, which is time-consuming, labor-intensive, and prone to significant errors. Specifically, this application provides the following embodiments:

[0047] Example 1

[0048] As attached Figure 1 As shown, the testing device includes a chassis 2, a drilling machine 3, a sand container 4, and a mounting base 1. The mounting base 1 is equipped with a clamping mechanism 11 for holding the chassis 2, and a switching mechanism 12 for switching the positions of the sand container 4 and the drilling machine 3. In this embodiment, two mounting bases 1 are provided and arranged side-by-side. The clamping mechanism 11 is installed on the end faces of the mounting bases 1 that are close to each other. During use, the mounting bases 1 are placed on the ground of the foundation to be tested, and the chassis 2 is placed on the ground between the two mounting bases 1. (See attached diagram) Figure 2 The chassis 2 has a through hole 21 inside. The chassis 2 is an open-top box. The through hole 21 is located at the bottom of the chassis 2. The drilling machine 3 and the sand container are located above the chassis 2. The drilling machine 3 can drill holes in the ground of the foundation to be tested through the through hole 21. The sand container can fill the holes drilled by the drilling machine 3 with standard sand. During the drilling and sand filling process, the chassis 2 is clamped and stabilized by two sets of clamping mechanisms 11 to reduce the shaking of the chassis 2. It should be noted that the capacity of the standard sand stored in the sand container is greater than the maximum volume of the hole drilled by the drilling machine 3, so as to ensure that the standard sand in the sand container can fill the drilled hole after one filling, reducing the number of fillings.

[0049] The switching mechanism 12 includes a drive motor 121, a turntable 122 fixedly connected to the output end of the drive motor 121, a punch 3, and a sand container 4 installed at the end of the turntable 122 away from the drive motor 121. Specifically, as shown in the attached... Figure 1As shown, a switching mechanism 12 is provided on both mounting bases 1. The axis of the turntable 122 in the switching mechanism 12 is horizontal. To facilitate the installation of the punch 3 and the sand container 4, two mounting brackets 124 are fixedly connected between the turntables 122 in the left and right sets of switching mechanisms 12. These brackets are used to install the punch 3 and the sand container 4, respectively. The mounting brackets 124 are parallel to the axis of the turntable 122, and the two mounting brackets 124 are symmetrically arranged about the axis of the turntable 122, so that the punch 3 and the sand container 4 can be installed in a horizontal position. The mounting positions on the turntable 122 are symmetrical about the axis of rotation of the turntable 122. During the rotation of the turntable 122 and the revolution of the punching machine 3 and the sand container 4, the turntable 122 can basically achieve dynamic balance, thereby improving the stability of the overall device. The mounting frame 124 and the rotating wheel 123 can be integrally formed or fixedly connected by welding or other fixing methods. In other embodiments, the end of the rotating wheel 123 can also protrude relative to the end of the turntable 122 to install the sand container 4 or the punching machine 3.

[0050] When drilling is required, the drive motor 121 drives the turntable 122 to rotate, positioning the drilling machine 3 below the sand container 4. At this time, the drilling machine 3 is positioned above the base plate 2. Drilling is performed through the through hole 21 of the base plate 2 by the drilling machine 3. After drilling is completed, the drilling machine 3 is reset, and the drive motor 121 drives the turntable 122 again, positioning the sand container 4 below the drilling machine 3 and above the base plate 2. Standard sand can be poured into the hole drilled by the drilling machine 3 through the sand container 4, reducing manual digging and sand filling, saving time and effort, and reducing human error.

[0051] Example 2

[0052] As attached Figure 3 As shown, the difference from Embodiment 1 is that a mounting base 1 is provided and fixed to the ground in an inverted U-shape, and the switching mechanism 12 is located on top of the mounting base 1, with the axis of the turntable 122 in the switching mechanism 12 being vertical. In this embodiment, the drilling machine 3 and the sand container 4 can be mounted on the turntable 122 without the mounting bracket 124.

[0053] In this embodiment, the base 2 is positioned to the left of the axis of the turntable 122. The turntable 122 is rotated by the drive motor 121, positioning the punch 3 to the left of the sand container 4. At this point, the punch 3 is above the base 2, and punches holes through the through-hole 21 of the base 2. After punching, the punch 3 resets, and the drive motor 121 drives the turntable 122 again, positioning the sand container 4 to the left of the punch 3 and above the base 2. Standard sand can then be poured into the holes punched by the punch 3 through the sand container 4. In other installation methods, a distance difference is maintained between the base 2 and the axis of the turntable 122, and the distance between the installation positions of the punch 3 and the sand container 4 and the axis of the turntable 122 is adjusted according to the distance between the base 2 and the axis of the turntable 122.

[0054] Example 3

[0055] As attached Figure 4 Appendix Figure 5 As shown, based on Embodiment 1, two rotating wheels 123 are rotatably connected inside the turntable 122. The two rotating wheels 123 are symmetrically arranged about the rotation axis of the turntable 122, and the rotation axes of the two rotating wheels 123 are parallel to the rotation axis of the turntable 122. The punching machine 3 is fixed on one of the rotating wheels 123, and the sand container 4 is fixed on the other rotating wheel 123. A transmission assembly 13 is connected between the drive motor 121 and the rotating wheel 123. While the drive motor 121 drives the turntable 122 to rotate, the drive motor 121 also drives the two rotating wheels 123 to rotate through the transmission assembly 13. Under the transmission action of the transmission assembly 13, the rotating wheels 123 and the turntable 122 rotate in opposite directions but at the same speed.

[0056] For transmission component 13, as shown in the appendix Figure 6 As shown, it includes a connecting rod 131 and five sequentially meshing transmission gears 132. The transmission ratio between the transmission gears 132 is 1. The connecting rod 131 is fixedly connected to the output end of the drive motor 121. The transmission gear 132 located in the middle is fixedly connected to the mounting base 1. The other four transmission gears 132 are rotatably connected to the connecting rod 131. One of the rotating wheels 123 is fixedly connected to one of the two outermost transmission gears 132, and the other rotating wheel 123 is fixedly connected to the other of the two outermost transmission gears 132. The axis of the rotating wheel 123 coincides with that of the corresponding transmission gear 132.

[0057] Specifically, in this embodiment, the rotating wheel 123 is embedded in the turntable 122. To enhance the connection effect, the radial cross-section of the rotating wheel 123 is "H" shaped, which can effectively prevent the rotating wheel 123 from detaching from the turntable 122 and reduce the axial movement between the rotating wheel 123 and the turntable 122. In addition, in this embodiment, the five transmission gears 132 are identical spur gears. The rotation axis of the middle transmission gear 132 coincides with the axis of the output shaft of the drive motor 121. That is, the middle transmission gear 132 is fitted onto the output shaft of the drive motor 121 but not connected to the output shaft; instead, it is fixed to the mounting base 1 by a rod. The other four transmission gears 132 are rotatably connected to the connecting rod 131 via a rotating shaft. The rotation of the connecting rod 131 drives the four transmission gears 132 to revolve. During the revolve, the meshing transmission between the transmission gears 132 causes the four transmission gears 132 to rotate independently. The two outermost transmission gears 132 rotate independently. The rotation speed of the connecting rod 131 is the same as that of the connecting rod 131, but the direction of rotation is opposite. The rotation speed and direction of the other two transmission gears 132 are the same as those of the connecting rod 131. The rotation speed and direction of the connecting rod 131 are the same as those of the turntable 122. Thus, the rotation speed of the turntable 122 and the rotating wheel 123 are the same, but the direction of rotation is opposite. This prevents the mounting bracket 124 connected to the rotating wheel 123, as well as its sand container 4 and the punching machine 3, from rotating. This improves the stability of the sand container 4 and the punching machine 3. Since the weight of the sand container 4 before and after filling with sand will affect the detection accuracy, the fact that the sand container 4 does not rotate can also prevent the standard sand in the sand container 4 from leaking out, causing a change in the weight of the sand container 4 and affecting the detection accuracy.

[0058] In this embodiment, the five transmission gears 132 are arranged in a straight line. In other embodiments, the position of the transmission gears 132 and the shape of the connecting rod 131 can be adjusted according to the distance between the axis of the rotating wheel 123 and the axis of the turntable 122. Specifically, in this embodiment, the distance between the axis of the rotating wheel 123 and the axis of the turntable 122 is equal to twice the pitch circle diameter of the transmission gear 132. At this time, the five transmission gears 132 are arranged in a straight line, which is just enough to enable transmission. When the distance between the axis of the rotating wheel 123 and the axis of the turntable 122 is not equal to twice the pitch circle diameter of the transmission gear 132, the two middle rotatable transmission gears 132 need to be offset radially.

[0059] Example 4

[0060] As attached Figure 5 Appendix Figure 7 As shown, based on Embodiment 3, the clamping mechanism 11 includes a clamping assembly 111, a lifting assembly 112, and a flipping assembly 114. The clamping assembly 111 is used to clamp the chassis 2, the lifting assembly 112 is used to drive the chassis 2 to rise and fall, and the flipping assembly 114 can drive the chassis 2 to flip.

[0061] The clamping assembly 111 includes a clamping cylinder 1111 and a chuck fixedly connected to the piston rod of the clamping cylinder 1111. The chuck includes a bidirectional cylinder 1113 fixedly connected to the piston rod of the clamping cylinder 1111, and a clamping rod 1114 fixedly connected to the output end of the bidirectional cylinder 1113.

[0062] The lifting assembly 112 includes a lifting motor 1121, a drive shaft 1122 connected to the output end of the lifting motor 1121, a lifting platform 1123 threadedly connected to the drive shaft 1122, and a clamping assembly 111 mounted on the lifting platform 1123.

[0063] The flipping assembly 114 includes a fixed rack 1141 fixed on the mounting base 1 and a connecting gear 1142 rotatably connected to the lifting platform 1123. The connecting gear 1142 can mesh with the fixed rack 1141. The clamping assembly 111 is installed at the end of the connecting gear 1142 away from the lifting platform 1123. Specifically, the clamping cylinder 1111 in the clamping assembly 111 is fixed on the connecting gear 1142.

[0064] The clamping cylinder 1111 applies a clamping force to the chassis 2 in the left-right direction, while the bidirectional cylinder 1113 applies a clamping force to the chassis 2 in the front-back direction, thus clamping the chassis 2 from all sides, enhancing the clamping effect and improving the stability of the chassis 2. After clamping the chassis 2, the lifting motor 1121 drives the transmission shaft 1122 to rotate, thereby raising the lifting platform 1123, which in turn raises the clamping assembly 111 and the chassis 2, facilitating manual cleaning of mud or standard sand from the chassis 2. During the process of the lifting motor 1121 driving the lifting platform 1123 to rise, the connecting gear 1142 can mesh with the fixed rack 1141, thereby driving the connecting gear 1142 to rotate under the action of meshing transmission, which in turn causes the clamping assembly 111 and the chassis 2 to flip over, allowing impurities on the chassis 2 to be dumped off.

[0065] It should be noted that there is a gap between the connecting gear 1142 and the fixed rack 1141, so that the connecting gear 1142 does not rotate immediately when it rises. Therefore, when the chassis 2 needs to be cleaned manually, the lifting motor 1121 drives the lifting platform 1123 to rise and stops rising before the connecting gear 1142 and the fixed rack 1141 mesh. When it is necessary to tilt or overturn, the lifting motor 1121 needs to drive the lifting platform 1123 to rise so that the connecting gear 1142 and the fixed rack 1141 mesh and drive.

[0066] Specifically, in this embodiment, since the chassis 2 is a box without a lid, in order to avoid the clamping cylinder 1111 and the bidirectional cylinder 1113 applying excessive clamping force to the chassis 2, an elastic pad or friction pad is installed on the clamping rod 1114 to enhance the friction, so that the clamping cylinder 1111 and the bidirectional cylinder 1113 do not need to apply excessive force to clamp the chassis 2.

[0067] Furthermore, to ensure that impurities can be dumped during the tilting process of the chassis 2, after the connecting gear 1142 meshes with the fixed rack 1141 and rotates, the rotation angle of the connecting gear 1142 during tilting should be greater than 90 degrees and less than 270 degrees. In this embodiment, after the connecting gear 1142 meshes with the fixed rack 1141, the rotation angle of the connecting gear 1142 is 180 degrees, at which point the tilting effect is the best.

[0068] Example 5

[0069] As attached Figure 7 Appendix Figure 8 As shown, based on Embodiment 4, a clutch assembly 113 is connected between the lifting motor 1121 and the transmission shaft 1122. The clutch assembly 113 includes a fixed gear 1131 fixedly connected to the output end of the lifting motor 1121, a movable gear 1132 splinedly connected to the transmission shaft 1122, a lever 1133 fixedly connected to the output end of the drive motor 121, an abutment block 1134 fixedly connected to the movable gear 1132, and an elastic element 1135 fixedly connected between the abutment block 1134 and the transmission shaft 1122.

[0070] In this embodiment, the drive motor 121 drives the lever 1133 to rotate, causing the lever 1133 to abut against the abutment block 1134 and push the moving gear 1132 to move axially along the transmission shaft 1122. This causes the moving gear 1132 to mesh with the fixed gear 1131. After the lever 1133 disengages from the abutment block 1134, the elastic force of the elastic element 1135 causes the moving gear 1132 to disengage from the fixed gear 1131. Specifically, the transmission shaft 1122 is divided into three parts: the upper end is a splined shaft part, which can be splinedly connected to the moving gear 1132; the middle part is a smooth shaft part, which facilitates the welding and fixing of the elastic element 1135; and the lower end is a threaded part, which can be threadedly connected to the lifting platform 1123.

[0071] In addition, the lever 1133 pushes the abutment block 1134 and the moving gear 1132 to rise, so that the moving gear 1132 meshes with the fixed gear 1131, and the drive motor 121 stops. At this time, the punch 3 and the sand bottle 4 on the turntable 122 are not located above the chassis 2. At this time, the lifting motor 1121 drives the chassis 2 to lift and flip, so as to avoid interference and collision between the chassis 2 and the sand bottle 4 or the punch 3, thereby improving safety.

[0072] By setting the lever 1133, the linkage and synchronization between the switching mechanism 12 and the clamping mechanism 11 are improved.

[0073] Example 6

[0074] As attached Figure 9 As shown, based on Embodiment 5, the sand container 4 is installed on the mounting frame 124 via the connecting assembly 5. The connecting assembly 5 includes an adjusting motor 51 fixed on the mounting frame 124 and a clamping arm 52 threadedly connected to the piston rod of the adjusting motor 51. The clamping arm 52 is used to clamp the sand container 4, and a buffer 53 is fixedly connected between the clamping arm 52 and the rotating wheel 123.

[0075] Specifically, most sand containers 4 are equipped with side lugs for easy manual handling and transport. In this embodiment, the clamping arm 52 can be directly clamped onto the side lugs. In other embodiments, the clamping arm 52 can also be clamped onto the body of the sand container 4.

[0076] In addition, the buffer 53 in this embodiment is a buffer spring. Before filling with sand, the clamping arm 52 is driven to descend by adjusting the motor 51 until the lower end of the sand container 4 touches the bottom of the inner side of the chassis 2. The buffer 53 can reduce the vibration of the sand container 4 and prevent the standard sand from being shaken out from the upper opening of the sand container 4.

[0077] Example 7

[0078] As attached Figure 10 To be continued Figure 12 As shown, based on Embodiment 5, the drilling machine 3 includes a drilling component 31 and a material collection component 32. The drilling component 31 is used to drill holes in the ground of the foundation to be tested, and the material collection component 32 is used to remove soil from the holes. The drilling assembly 31 includes a feed motor 311, a feed screw 312, a connecting platform 316, a drilling motor 313, a blade shaft 314, and a blade 315. Specifically, the feed motor 311 is mounted on the mounting bracket 124, the feed screw 312 is connected to the output end of the feed motor 311, the connecting platform 316 is threaded to the feed screw 312, the drilling motor 313 is fixed to the lower end of the connecting platform 316, the blade shaft 314 is connected to the output end of the drilling motor 313, and the blade 315 is fixed to the lower end of the blade shaft 314. The material collection assembly 32 includes a material collection cylinder 321 fixed to the lower end of the connecting platform 316, a cover 322 fixed to the piston rod of the material collection cylinder 321, and the cover 322 is fitted over the outside of the blade shaft 314.

[0079] Specifically, the drilling motor 313 and the feed motor 311 work together to make the blade 315 rotate and feed downwards to make holes. After the holes are made, the collection cylinder 321 drives the cover 322 to be inserted into the holes and surround the soil inside the cover 322. Finally, the feed motor 311 and the collection cylinder 321 work together to make the blade 315 and the cover 322 rise synchronously, bringing the soil out of the holes in one go, reducing the number of times the soil needs to be collected and improving efficiency.

[0080] Example 8

[0081] Based on Example 7, and in conjunction with Appendix Figure 13 Appendix Figure 14 As shown, its blade shaft 314 includes an inner shaft 3141 and an outer shaft 3142. The inner shaft 3141 is fixed to the output end of the drilling motor 313, the outer shaft 3142 is sleeved on the outside of the inner shaft 3141, and the cover 322 is sleeved on the outside of the outer shaft 3142. To maintain stability, the lower end of the outer shaft 3142 is connected to the inner shaft 3141 by a bearing. An internal gear 3143 is fixedly mounted on the inner shaft 3141, and an external gear 3144 that meshes with the internal gear 3143 is fixedly mounted on the outer shaft 3142. The circumferential width of the tooth profile of the internal gear 3143 is smaller than the tooth pitch of the external gear 3144. The blade 315 includes a fixed blade 3151 fixedly connected to the inner shaft 3141 and an adjusting blade 3152 fixedly connected to the outer shaft 3142. The fixed blade 3151 and the adjusting blade 3152 can be combined to form a closed shape along the axial direction of the blade shaft 314. The closed shape formed by the fixed blade 3151 and the adjusting blade 3152 along the axial direction of the blade shaft 314 is adapted to the axial cross section of the cover 322.

[0082] In this embodiment, the internal gear 3143 is fixed to the upper end of the inner shaft 3141, and the external gear 3144 is fixed to the upper end of the outer shaft 3142. Both the internal gear 3143 and the external gear 3144 have four teeth. Since the circumferential width of the tooth profile of the internal gear 3143 is smaller than the tooth pitch of the external gear 3144, when the inner shaft 3141 rotates counterclockwise, the internal gear 3143 can drive the external gear 3144 and the outer shaft 3142 to rotate synchronously, thereby driving the fixed blade 3151 and the adjusting blade 31. 52. Drilling is performed by rotating the inner shaft 3141 clockwise. When the inner shaft 3141 rotates clockwise, the inner gear 3143 rotates relative to the outer gear 3144 until the teeth on the inner gear 3143 abut against the teeth on the clockwise side of the outer gear 3144. At this time, the inner shaft 3141 rotates relative to the outer shaft 3142 by a certain angle, so that the adjusting blade 3152 also rotates relative to the fixed blade 3151 by a certain angle, and the adjusting blade 3152 and the fixed blade 3151 can be combined to form an axially closed shape.

[0083] Specifically, when the counterclockwise side of the tooth profile of the internal gear 3143 abuts against the tooth profile of the external gear 3144, the inner shaft 3141 rotates 60° clockwise, so that the clockwise side of the tooth profile of the internal gear 3143 abuts against the tooth profile of the external gear 3144. At this time, the inner shaft 3141 rotates 60° relative to the outer shaft 3142, and the adjusting blade 3152 also rotates 60° relative to the fixed blade 3151.

[0084] There are three fixed blades 3151 and three adjusting blades 3152. The arc angle of each fixed blade 3151 and adjusting blade 3152 is 60°. To avoid interference, the fixed blades 3151 and adjusting blades 3152 are staggered along the axial direction. The fixed blades 3151 are arranged in a circular array on the inner shaft 3141, and the adjusting blades 3152 are arranged in a circular array on the outer shaft 3142. That is, the included angle between two adjacent fixed blades 3151 is 60°, and the included angle between two adjacent adjusting blades 3152 is also 60°. When the counterclockwise side of the tooth profile of the internal gear 3143 abuts against the tooth profile of the external gear 3144, the fixed blade 3151 and the adjusting blade 3152 overlap. When the clockwise side of the tooth profile of the internal gear 3143 abuts against the tooth profile of the external gear 3144, the fixed blade 3151 and the adjusting blade 3152 are offset in the circumferential direction, and the shape formed is a circle projected along the axial direction of the blade shaft 314. At this time, the fixed blade 3151, the adjusting blade 3152 and the cover 322 can form a closed space for collecting soil.

[0085] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A foundation engineering testing device based on the sand cone method, capable of performing sand cone tests on the foundation to be tested, characterized in that, include: A chassis (2) having a through hole (21) inside; a drilling machine (3) capable of drilling holes in the ground of the foundation to be tested through the through hole (21); and a sand container (4) for storing standard sand and for filling the holes drilled by the drilling machine (3). Mounting base (1), on which a clamping mechanism (11) for clamping the chassis (2) and a switching mechanism (12) for switching the positions of the sand container (4) and the punch (3) are mounted; the switching mechanism (12) includes a drive motor (121) and a turntable (122) fixedly connected to the output end of the drive motor (121). The punch (3) and the sand container (4) are mounted on the turntable (122) at the end away from the drive motor (121), and the mounting positions of the punch (3) and the sand container (4) on the turntable (122) are symmetrical about the rotation axis of the turntable (122). Two rotating wheels (123) are rotatably connected inside the turntable (122). The two rotating wheels are symmetrically arranged about the rotation axis of the turntable (122), and the rotation axes of the two rotating wheels (123) are parallel to the rotation axis of the turntable (122). The punching machine (3) is fixed on one of the rotating wheels (123), and the sand container (4) is fixed on the other rotating wheel (123). A transmission assembly (13) is connected between the drive motor (121) and the rotating wheel (123). While the drive motor (121) drives the turntable (122) to rotate, the drive motor (121) also drives the two rotating wheels (123) to rotate through the transmission assembly (13), so that the rotating wheels (123) and the turntable (122) rotate in opposite directions but at the same speed. The transmission assembly (13) includes a connecting rod (131) and five sequentially meshing transmission gears (132). The transmission ratio between the transmission gears (132) is 1. The connecting rod (131) is fixedly connected to the output end of the drive motor (121). The middle transmission gear (132) is fixedly connected to the mounting base (1). The other four transmission gears (132) are rotatably connected to the connecting rod (131). One of the rotating wheels (123) is fixedly connected to one of the two outermost transmission gears (132), and the other rotating wheel (123) is fixedly connected to the other of the two outermost transmission gears (132). The axis of the rotating wheel (123) coincides with that of the corresponding transmission gear (132).

2. The foundation engineering testing device based on the sand cone method according to claim 1, characterized in that, The clamping mechanism (11) includes a clamping assembly (111) for clamping the chassis (2). The clamping assembly (111) includes a clamping cylinder (1111) mounted on the mounting base (1) and a chuck fixedly connected to the piston rod of the clamping cylinder (1111). The chuck includes a bidirectional cylinder (1113) fixedly connected to the piston rod of the clamping cylinder (1111). The output end of the bidirectional cylinder (1113) is fixedly connected to a clamping rod (1114).

3. The foundation engineering testing device based on the sand cone method according to claim 2, characterized in that, The clamping mechanism (11) further includes a lifting assembly (112) capable of driving the chassis (2) to rise and fall. The lifting assembly (112) includes a lifting motor (1121) fixed on the mounting base (1), a transmission shaft (1122) connected to the output end of the lifting motor (1121), and a lifting platform (1123) threadedly connected to the transmission shaft (1122). The clamping cylinder (1111) is mounted on the lifting platform (1123).

4. The foundation engineering testing device based on the sand cone method according to claim 3, characterized in that, A clutch assembly (113) is connected between the lifting motor (1121) and the transmission shaft (1122). The clutch assembly (113) includes a fixed gear (1131) fixedly connected to the output end of the lifting motor (1121), a movable gear (1132) splinedly connected to the transmission shaft (1122), a lever (1133) fixedly connected to the output end of the drive motor (121), an abutment block (1134) fixedly connected to the movable gear (1132), and an elastic element (1135) fixedly connected between the abutment block (1134) and the transmission shaft (1122). The drive motor (121) drives the lever (1133) to rotate, so that the lever (1133) can abut against the abutment block (1134) and push the movable gear (1132) to move along the axial direction of the transmission shaft (1122).

5. The foundation engineering testing device based on the sand cone method according to claim 3 or 4, characterized in that, The clamping mechanism (11) further includes a flipping assembly (114) capable of driving the chassis (2) to flip. The flipping assembly (114) includes a fixed rack (1141) fixed on the mounting base (1) and a connecting gear (1142) rotatably connected to the lifting platform (1123). The clamping assembly (111) is installed at the end of the connecting gear (1142) away from the lifting platform (1123). The connecting gear (1142) can mesh with the fixed rack (1141).

6. The foundation engineering testing device based on the sand cone method according to claim 1, characterized in that, The rotating wheel (123) used to install the sand container (4) is provided with a connecting assembly (5). The connecting assembly (5) includes an adjusting motor (51) fixed on the rotating wheel (123) and a clamping arm (52) threaded to the output end of the adjusting motor (51). The clamping arm (52) is used to clamp the sand container (4). A buffer (53) is fixedly connected between the clamping arm (52) and the rotating wheel (123).

7. The foundation engineering testing device based on the sand cone method according to claim 1, characterized in that, The punching machine (3) includes a punching assembly (31), which includes a feed motor (311) fixed on the rotary wheel (123), a feed screw (312) connected to the output end of the feed motor (311), a connecting platform (316) threaded to the feed screw (312), a punching motor (313) fixedly mounted on the connecting platform (316), a blade shaft (314) connected to the output end of the punching motor (313), and a blade (315) mounted on the blade shaft (314). The blade shaft (314) includes an inner shaft (3141) and an outer shaft (3142). The inner shaft (3141) is fixed to the output end of the punching motor (313). The outer shaft (3142) is sleeved on the outside of the inner shaft (3141). An internal gear (3143) is fixedly provided on the inner shaft (3141). An external gear (3144) that meshes with the internal gear (3143) is fixedly provided on the outer shaft (3142). The circumferential width of the tooth profile of the internal gear (3143) is smaller than the pitch of the tooth profile of the external gear (3144). The blade (315) includes a fixed blade (3151) fixedly connected to the inner shaft (3141) and an adjusting blade (3152) fixed to the outer shaft (3142). The fixed blade (3151) and the adjusting blade (3152) can be combined to form a closed shape along the axial direction of the blade shaft (314).

8. The foundation engineering testing device based on the sand cone method according to claim 7, characterized in that, The punching machine (3) also includes a material collection assembly (32), which includes a material collection cylinder (321) fixed on the connecting table (316) and a cover (322) fixed on the piston rod of the material collection cylinder (321). The cover (322) is sleeved on the outside of the outer shaft (3142). The fixed blade (3151) and the adjusting blade (3152) are combined to form a closed shape along the axial direction of the blade shaft (314) and are adapted to the axial section of the cover (322).

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