Sand stone cushion bearing capacity detection equipment
By combining the counterweight ring, the second motor, and the stranded wire, the problems of high energy consumption and unstable connection caused by the large mass of the gravity hammer were solved, thus achieving accuracy and stability in the bearing capacity testing of sand-aggregate cushion layers.
Patent Information
- Application Number
- CN202520403713.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-03-10
AI Technical Summary
In existing power penetrometer testing devices, the large mass of the gravity hammer leads to excessive power consumption of the electromagnet, resulting in low energy consumption. Furthermore, in actual use, the electromagnet often disconnects from the gravity hammer before reaching the designed height, affecting the accuracy of the experiment.
The system employs a combination of a counterweight ring, a second motor, and stranded wire. The counterweight ring is raised by stretching the stranded wire, and a switch assembly is installed inside the structural cylinder to ensure the stability of the counterweight ring during the ascent. During the descent, the counterweight ring is not subjected to the tension of the stranded wire. The second motor is used to reverse the wire release, ensuring the stability and accuracy of the counterweight ring during the descent.
This improved the accuracy of the experiment, reduced the additional resistance during the fall of the counterweight ring, and ensured the reliability of the test data.
Smart Images
Figure CN223867206U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of roadbed testing technology, specifically to a device for testing the bearing capacity of sand-gravel cushion layers. Background Technology
[0002] The bearing capacity of sand-gravel cushion layers is typically assessed using two methods: static plate load testing and dynamic cone penetration testing. The static plate load test involves placing a steel plate of a specific size on the foundation soil to be tested. Jacks are then used to progressively increase the load and measure the corresponding settlement until the soil settlement meets the instability condition. The bearing capacity is then calculated by dividing the measured load weight by the area of the steel plate. Static plate load testing requires a significant amount of time and manpower. Dynamic cone penetration testing is a newer method for testing the bearing capacity of shallow foundations. It typically involves a hammer and a probe. The hammer is positioned at a standard height and allowed to fall freely, striking the probe which penetrates the soil. The probe is then withdrawn, and the penetration depth is measured, thus determining the bearing capacity. Existing power penetration testing devices are divided into manual and electric types. The manual type requires a lot of physical exertion from the operator, while the electric type usually uses magnetic attraction to drive the gravity hammer to rise and provide gravitational potential energy. After the electromagnetic field is de-energized and demagnetized, the gravity hammer falls and hits the ground-breaking cone to penetrate into the foundation. However, due to the large mass of the gravity hammer, the electromagnet consumes too much electricity, resulting in a low energy efficiency ratio. In actual use, the electromagnet often disconnects from the gravity hammer before reaching the designed height, which seriously affects the accuracy of the experiment. Utility Model Content
[0003] In view of the above problems, this application provides a sand-aggregate cushion layer bearing capacity testing device, which can facilitate the rapid discharge of air from the sintering furnace, thereby improving the efficiency of the sintering furnace.
[0004] According to one aspect of the embodiments of this application, a bearing capacity testing device for sand-gravel cushion layers is provided. The device includes a pressure-bearing support frame, a pressure plate at the bottom of the support frame, and a mounting plate at the top of the support frame. A pre-drilled hole is provided at the central axis of the pressure plate, and a penetrating rod is disposed within the pre-drilled hole. A soil-breaking cone is coaxially connected to the bottom of the penetrating rod. An impact ring is disposed on the outer periphery of the penetrating rod near the soil-breaking cone. The top of the penetrating rod extends upwards to the top of the mounting plate. An adjustment device is provided in the middle of the support frame. The adjustment device includes a structural cylinder, a lifting assembly for raising and lowering the structural cylinder, a counterweight ring sleeved on the penetrating rod, the outer diameter of the counterweight ring matching the inner diameter of the structural cylinder, a switch assembly for fixing the counterweight ring inside the structural cylinder, and a second motor at the mounting plate. A stranded wire is connected to the second motor via a stranded wire reel, and the stranded wire is fixedly connected to the top of the counterweight ring.
[0005] In some embodiments, the lifting assembly includes two connecting platforms symmetrically arranged outside the structural cylinder, with a rotating screw threaded through and screwed onto each connecting platform. The pressure-bearing support frame has two mounting platforms inside, with a first motor mounted on each mounting platform. One end of the rotating screw is rotatably connected to the pressure-bearing support frame, and the other end of the rotating screw is coaxially connected to the first motor.
[0006] In some embodiments, the switch assembly includes at least two receiving slots symmetrically arranged on the inner wall of the structural cylinder, each receiving slot having a magnetic block disposed therein, the bottom side of the magnetic block forming a slope, an electromagnetic component fixedly disposed at the bottom wall of the receiving slot, and the magnetic block and the electromagnetic component being connected by an elastic element.
[0007] In some embodiments, the bottom of the mounting plate is provided with a plurality of ball bearings.
[0008] In some embodiments, the pressure-bearing support frame is externally hinged with two auxiliary support cylinders, and the outer wall of the pressure-bearing support frame is provided with a clamp that matches the auxiliary support cylinders.
[0009] In some embodiments, an insert is provided inside the auxiliary support cylinder, a strip-shaped groove is provided on one side of the auxiliary support cylinder, a pedal is connected to the outer wall of the insert, and the pedal extends along the strip-shaped groove to the outside of the auxiliary support cylinder.
[0010] The beneficial effects of this application are as follows: By setting up a counterweight ring, a second motor, and stranded wire, the counterweight ring is raised by stretching the stranded wire, thereby ensuring the stability of the counterweight ring during the rising process. This solves the problem of inaccurate test data caused by the counterweight ring falling and impacting the impact ring before reaching the set height. In this embodiment, by setting up a structural cylinder and installing a switch assembly inside the structural cylinder, the counterweight ring can be supported by the switch assembly after being raised. At this time, the second motor can reverse to release the wire, so that the stranded wire is in a relaxed state. This prevents the counterweight ring from being pulled by the stranded wire during the falling process, thereby effectively reducing the additional resistance received by the counterweight ring during the falling process and further ensuring the accuracy of the experiment.
[0011] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description
[0012] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings.
[0013] In the attached diagram:
[0014] Figure 1 A schematic diagram of the overall cross-sectional structure of the sand-gravel cushion layer bearing capacity testing device provided in the embodiments of this application under the first state;
[0015] Figure 2 A schematic diagram of the overall cross-sectional structure of the sand-gravel cushion layer bearing capacity testing device provided in the embodiments of this application under the second state;
[0016] Figure 3 for Figure 2 Enlarged view at point A.
[0017] The reference numerals in the detailed embodiments are as follows:
[0018] The equipment includes: a sand and gravel cushion layer bearing capacity testing device 100, a pressure support frame 110, a mounting platform 111, a pressure plate 120, a reserved hole 121, a mounting plate 130, a second motor 131, a stranded wire 132, a ball bearing 133, a penetration rod 140, a soil breaking cone 141, an impact ring 142, an adjustment device 150, a structural cylinder 151, a counterweight ring 152, a switch assembly 153, a receiving groove 153a, a magnetic block 153b, an electromagnetic assembly 153c, an elastic element 153d, a lifting assembly 160, a connecting platform 161, a rotating screw 162, a first motor 163, an auxiliary support cylinder 170, a clamp 171, a strip through groove 172, an insert 173, and a pedal 173a. Detailed Implementation
[0019] The embodiments of the technical solution of this application will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this application, and are therefore merely examples and should not be used to limit the scope of protection of this application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit this application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and the foregoing description of the accompanying drawings are intended to cover non-exclusive inclusion.
[0020] For details, please refer to Figures 1 to 2 , Figure 1This is a schematic diagram of the overall cross-sectional structure of the sand-gravel cushion layer bearing capacity testing device provided in the embodiments of this application under the first state. Figure 2 This is a schematic diagram of the overall cross-sectional structure of the sand-gravel cushion layer bearing capacity testing device provided in the embodiments of this application under the second state. Figure 3 for Figure 2Enlarged view at point A. The sand and gravel cushion layer bearing capacity testing equipment 100 includes a pressure support frame 110, a pressure plate 120 at the bottom of the pressure support frame 110, and an installation plate 130 at the top of the pressure support frame 110. The pressure support frame 110, the pressure plate 120, and the installation plate 130 together form a stable support structure. The pressure support frame 110 can be welded from a steel frame. A pre-drilled hole 121 is provided at the central axis of the pressure plate 120. A penetrating rod 140 is installed in the pre-drilled hole 121. A soil-breaking cone 141 is coaxially connected to the bottom of the penetrating rod 140. An impact ring 142 is provided on the outer periphery of the penetrating rod 140 near the soil-breaking cone 141. The top of the penetrating rod 140 extends upward to the top of the mounting plate 130. The soil-breaking cone 141, the penetrating rod 140, and the impact ring 142 can be an integral structure. During operation, the counterweight ring 152 falls and impacts the impact ring 142, causing the soil-breaking cone 141 to penetrate into the sand and gravel cushion layer. The bearing capacity of the sand and gravel cushion layer is judged based on the penetration depth. The soil-breaking cone 141, the penetrating rod 140, and the impact ring 142 are all existing technologies and will not be described in detail here. An adjustment device 150 is provided in the middle of the pressure support frame 110. The adjustment device 150 is used to adjust the height of the initial position of the counterweight ring 152. The adjusting device 150 includes a structural cylinder 151. A lifting assembly 160 for raising and lowering the structural cylinder 151 is provided at the structural cylinder 151. The lifting assembly 160 is used to drive the entire structural cylinder 151 to be raised or lowered on the pressure support frame 110. A counterweight ring 152 is sleeved on the insertion rod 140. The outer diameter of the counterweight ring 152 matches the inner diameter of the structural cylinder 151. A switch assembly 153 for fixing the counterweight ring 152 is provided inside the structural cylinder 151. A second motor 131 is provided at the mounting plate 130. A stranded wire 132 is connected to the second motor 131 through a stranded wire 132 reel. The stranded wire 132 is fixedly connected to the top of the counterweight ring 152. During operation, after the second motor 131 is turned on, it will wind up the stranded wire 132. Further stretching of the stranded wire 132 will lift the counterweight ring 152 into the structural cylinder 151. At this time, the counterweight ring 152 is... The switch assembly 153 in the structural cylinder 151 provides support. After the second motor 131 reverses, the stranded wire 132 is in a relaxed state, and the switch assembly 153 is turned on. At this time, the counterweight ring 152 is not supported by the switch assembly 153 or the tension of the stranded wire 132. The counterweight ring 152 will make free fall motion and slide down along the outer periphery of the penetration rod 140. Finally, the counterweight ring 152 will impact the impact ring 142, causing the penetration rod 140 and the soil-breaking cone 141 to insert into the sand and gravel cushion layer. Subsequently, the second motor 131 will start again to wind up the stranded wire 132, and the cycle will be repeated to complete the corresponding number of impacts according to the specifications.
[0021] As can be seen from the above, in this embodiment, by setting a counterweight ring 152, a second motor 131, and a stranded wire 132, the counterweight ring 152 is stretched by the stranded wire 132 to rise, thereby ensuring the stability of the counterweight ring 152 during the rising process. This solves the problem of inaccurate test data caused by the counterweight ring 152 falling and impacting the impact ring 142 before reaching the set height. In this embodiment, by setting a structural cylinder 151 and setting a switch assembly 153 inside the structural cylinder 151, the counterweight ring 152 can be supported by the switch assembly 153 after being lifted. At this time, the second motor 131 can reverse to release the wire, so that the stranded wire 132 is in a relaxed state. This prevents the counterweight ring 152 from being pulled by the stranded wire 132 during the falling process, thereby effectively reducing the additional resistance received by the counterweight ring 152 during the falling process and further ensuring the accuracy of the experiment.
[0022] In some embodiments, the lifting assembly 160 includes two connecting platforms 161 symmetrically arranged outside the structural cylinder 151. A rotating screw 162 is threaded through and screwed onto each connecting platform 161. Two mounting platforms 111 are arranged inside the pressure support frame 110. A first motor 163 is mounted on each mounting platform 111. One end of the rotating screw 162 is rotatably connected to the pressure support frame 110, and the other end of the rotating screw 162 is coaxially connected to the first motor 163. In this embodiment, depending on the actual operational requirements, the height of the structural cylinder 151 can be raised or lowered by the lifting assembly 160, thereby changing the initial position of the counterweight ring 152 relative to the pressure ring when it falls. Specifically, during operation, the first motor 163 can be turned on, causing the rotating screw 162 to rotate. The rotating screw 162 then drives the structural cylinder 151 to rise via the two connecting platforms 161 connected to the outside of the structural cylinder 151. Conversely, when the first motor 163 reverses direction, the structural cylinder 151 will fall.
[0023] In some embodiments, the switch assembly 153 includes at least two receiving grooves 153a symmetrically arranged on the inner wall of the construction cylinder 151. A magnetic block 153b is disposed in the receiving groove 153a. A slope is formed on one side of the bottom of the magnetic block. An electromagnetic component 153c is fixedly disposed at the bottom wall of the receiving groove 153a. The magnetic block and the electromagnetic component 153c are connected by an elastic member 153d. In this embodiment, during the upward movement of the counterweight ring 152, the counterweight ring 152 will enter the structural cylinder 151. At this time, the counterweight ring 152 continues to rise under the drag of the stranded wire 132. The outer wall of the counterweight ring 152 will abut against the slope of the magnetic block 153b and squeeze the magnetic block 153b, causing the magnetic block 153b to compress the elastic element 153d and enter the receiving groove 153a. When the counterweight ring 152 rises above the receiving groove 153a, the magnetic block will pop out of the receiving groove 153a again under the action of the elastic element 153d. At this time, the magnetic block 153b will be supported at the bottom of the counterweight ring 152. When it is necessary to turn on the switch assembly 153, the electromagnetic assembly 153c can be energized. After the electromagnetic assembly 153c generates a magnetic field, it attracts the magnetic block 153b. The magnetic block 153b retracts into the receiving groove 153a again. After the counterweight ring 152 loses its support, it begins to fall.
[0024] In some embodiments, a plurality of ball bearings 133 are provided at the bottom of the mounting plate 130. In this embodiment, the ball bearings 133 facilitate the movement of the device on the road surface.
[0025] In some embodiments, two auxiliary support cylinders 170 are hinged to the outside of the pressure support frame 110, and a locking member 171 matching the auxiliary support cylinders 170 is provided on the outer wall of the pressure support frame 110. In this embodiment, with the above-mentioned arrangement, when the device moves to the detection position, the auxiliary support cylinders 170 can be removed from the locking member 171, and after the auxiliary support cylinders 170 are flipped downwards, the free end of the auxiliary support cylinders 170 abuts against the ground, thereby further ensuring the stability of the device during use.
[0026] In some embodiments, an insert 173 is fitted inside the auxiliary support cylinder 170. A strip-shaped through groove 172 is formed on one side of the auxiliary support cylinder 170. A pedal 173a is connected to the outer wall of the insert 173, and the pedal 173a extends along the strip-shaped through groove 172 to the outside of the auxiliary support cylinder 170. In this embodiment, when the auxiliary support cylinder 170 is flipped downwards, the insert 173 can be dislodged from the auxiliary support cylinder 170 and inserted into the ground by stepping on the pedal 173a. This allows the entire device to be stably fixed above the road surface to be inspected, fully ensuring the overall stability of the device during operation.
[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although the foregoing embodiments have provided a detailed description of this application, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
Claims
1. A device for testing the bearing capacity of sand-aggregate cushion layers, characterized in that, It includes a pressure-bearing support frame, with a pressure-bearing plate at the bottom and an installation plate at the top; A pre-drilled hole is provided at the central axis of the pressure plate, and a penetrating rod is provided in the pre-drilled hole. A soil-breaking cone is coaxially connected to the bottom of the penetrating rod. An impact ring is provided on the outer periphery of the penetrating rod near the soil-breaking cone. The top of the penetrating rod extends upward to the top of the mounting plate. An adjustment device is provided in the middle of the pressure support frame. The adjusting device includes a structural cylinder, a lifting assembly for raising and lowering the structural cylinder is provided at the structural cylinder, a counterweight ring is sleeved on the penetrating rod, the outer diameter of the counterweight ring matches the inner diameter of the structural cylinder, a switch assembly for fixing the counterweight ring is provided inside the structural cylinder, a second motor is provided at the mounting plate, and a stranded wire is connected to the second motor through a stranded wire reel, the stranded wire being fixedly connected to the top of the counterweight ring.
2. The sand-aggregate cushion layer bearing capacity testing equipment according to claim 1, characterized in that, The lifting assembly includes two connecting platforms symmetrically arranged outside the structural cylinder. A rotating screw is threaded through and screwed onto each connecting platform. Two mounting platforms are arranged inside the pressure-bearing support frame. A first motor is installed on each mounting platform. One end of the rotating screw is rotatably connected to the pressure-bearing support frame, and the other end of the rotating screw is coaxially connected to the first motor.
3. The sand-aggregate cushion layer bearing capacity testing equipment according to claim 1, characterized in that, The switching assembly includes at least two accommodating slots symmetrically arranged on the inner wall of the structural cylinder. A magnetic block is disposed in the accommodating slot. A slope is formed on one side of the bottom of the magnetic block. An electromagnetic component is fixedly disposed on the bottom wall of the accommodating slot. The magnetic block and the electromagnetic component are connected by an elastic element.
4. The sand-aggregate cushion layer bearing capacity testing equipment according to claim 1, characterized in that, The bottom of the mounting plate is provided with multiple ball bearings.
5. The sand-aggregate cushion layer bearing capacity testing equipment according to claim 1, characterized in that, The pressure-bearing support frame has two auxiliary support cylinders hinged to its exterior, and the outer wall of the pressure-bearing support frame is provided with a clamp that matches the auxiliary support cylinders.
6. The sand-aggregate cushion layer bearing capacity testing equipment according to claim 5, characterized in that, An insert is fitted inside the auxiliary support cylinder. A strip-shaped groove is opened on one side of the auxiliary support cylinder. A pedal is connected to the outer wall of the insert, and the pedal extends along the strip-shaped groove to the outside of the auxiliary support cylinder.