A foundation bearing capacity testing device for roadbed construction

Abstract

This utility model discloses a foundation bearing capacity testing device for roadbed construction, belonging to the field of roadbed construction bearing capacity testing. It includes a bearing capacity testing component and a lifting and stabilizing component. The bearing capacity testing component includes a lead screw, with a universal ball detachably mounted at the lower end of the lead screw. A connecting seat is connected to the lower end of the universal ball, and a spherical groove is formed on the surface of the connecting seat. The universal ball is rotatably connected inside the spherical groove. A first pressure plate is fixedly connected to the lower end of the connecting seat, and a second pressure plate is detachably mounted at the lower end of the first pressure plate. Several gravity sensors are connected between the first and second pressure plates. This utility model, through the combination of the bearing capacity testing component and the lifting and stabilizing component, not only facilitates the use of the testing component in roadbed environments with different slopes, thus enhancing the versatility of the testing device, but also facilitates bearing capacity testing operations on roadbeds at different locations through the cooperation of the above structures, thereby enhancing the ease of use of the testing device.

Description

Technical Field

[0001] This utility model relates to the field of roadbed construction bearing capacity testing, specifically a foundation bearing capacity testing device for roadbed construction. Background Technology

[0002] Before constructing the roadbed, to ensure its quality, a foundation bearing capacity test is required, necessitating the use of a foundation bearing capacity testing device. The "Foundation Bearing Capacity Testing Device for Highway Roadbed Construction" disclosed in application number "CN202220369235.8" represents an increasingly mature technology. This device involves placing the foundation in a support box, adjusting the sliding bar and installing the sliding frame, and then pressing the bearing capacity testing instrument. The instrument is assembled using a screw on a connecting rod and residual pressure plate to compress the foundation. The degree of foundation depression is then determined based on the scale lines, thus demonstrating the foundation's concavity. This method also facilitates compression, improving monitoring accuracy. It overcomes the limitations of existing foundation bearing capacity monitoring methods that cannot directly display the degree of foundation depression under pressure. Furthermore, during the process of the bearing capacity testing instrument probe being pressed into the foundation, the... The probe of the foundation bearing capacity tester is relatively thin and long, and tilting occurs when it is pressed into the foundation. Continuing to press the probe under these conditions can damage the connection between the probe and the instrument, and also cause deviations in the test data. However, this testing device also has the following drawbacks: While the device, through its adjustable slider and mounting frame, can indeed perform bearing capacity testing, its simplicity is limited by the complex environment of roadbed use. Therefore, it is necessary to provide a testing device that is more suitable for different environments and enhances its versatility. Furthermore, this device is not convenient for testing the bearing capacity of foundations at different locations, affecting ease of use. Therefore, it is necessary to provide a testing device that facilitates bearing capacity testing of foundations at different locations and improves ease of use. Utility Model Content

[0003] This invention provides a foundation bearing capacity testing device for roadbed construction, aiming to solve the problem that existing testing devices are not suitable for bearing capacity testing of roadbeds in different environments.

[0004] To achieve the above objectives, this utility model provides a foundation bearing capacity testing device for roadbed construction, including a bearing capacity testing component and a lifting and stabilizing component;

[0005] The load-bearing capacity detection component includes a lead screw, a universal ball detachably mounted on the lower end of the lead screw, a connecting seat connected to the lower end of the universal ball, a spherical groove formed on the surface of the connecting seat, the universal ball rotatably connected inside the spherical groove, a first pressure plate fixedly connected to the lower end of the connecting seat, a second pressure plate detachably mounted on the lower end of the first pressure plate, a plurality of gravity sensors connected between the first pressure plate and the second pressure plate, a display screen formed on the upper end of the first pressure plate, and a rotating disk fixedly connected to the upper end of the lead screw.

[0006] A lifting and stabilizing assembly includes a fixed plate, with conical seats fixedly connected to both the upper and lower ends of the fixed plate. A lead screw is threaded into the fixed plate and the conical seats. Several fixed legs are fixedly connected to the side surface of the fixed plate. Lifting legs are slidably connected to the lower ends of the fixed legs. Several adjustment holes are equidistantly opened on the surface of the fixed legs. A telescopic spring is provided inside the lifting leg. A protrusion is fixedly connected to the upper end of the telescopic spring. A stabilizing plate is hinged to the lower end of the lifting leg. A limit pin is fixedly connected to the lower end of the stabilizing plate.

[0007] As a preferred embodiment of this utility model, the lower end of the lead screw is provided with a screw hole, and the upper end of the universal ball is fixedly connected with a bolt, the bolt being threaded into the inside of the screw hole.

[0008] As a preferred embodiment of this utility model, a connecting piece is fixedly connected to the upper end of the universal ball, an annular groove is formed at the upper end of the connecting piece, and a positioning ring is fixedly connected to the lower end of the lead screw, the positioning ring being engaged inside the annular groove.

[0009] As a preferred embodiment of this utility model, the surfaces of the first pressure plate and the second pressure plate are provided with a plurality of insertion holes, and the upper and lower ends of the gravity sensor are fixedly connected with insertion rods, which are inserted into the insertion holes.

[0010] As a preferred embodiment of this utility model, the surface of the lifting outrigger is provided with a mounting hole, and the telescopic spring is installed inside the mounting hole.

[0011] In a preferred embodiment of this utility model, the lower end of the lifting outrigger is fixedly connected to a hinge shaft, and the upper end of the stabilizing plate is fixedly connected to a hinge block, wherein the hinge shaft and the hinge block are hinged to each other.

[0012] In a preferred embodiment of this utility model, the first pressure plate and the second pressure plate are made of stainless steel, and the gravity sensor and the display are electrically connected.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. When installing and using the testing device, first place the testing device on the top of the roadbed in different environments. When the road surface is uneven, the stabilizing plate and the lifting legs are hinged, so it can be used on roadbeds with different inclinations. At the same time, control the protrusions in several lifting legs to engage with the adjustment holes at different heights on the surface of the upper fixed leg, so as to ensure that the testing device remains horizontal on roadbeds with different slopes. Finally, insert the limiting nail into the roadbed to fix the testing device. Compared with the testing device in the existing technology "A Foundation Bearing Capacity Testing Device for Highway Roadbed Construction", this utility model can be used on roadbeds in different environments through the cooperation of the above structures, thereby enhancing the versatility of the testing device.

[0015] 2. When performing bearing capacity testing on roadbeds at different locations, the rotating disc first rotates the lead screw clockwise or counterclockwise along the fixed disc, thereby lowering the first and second pressure plates. When the first and second pressure plates descend and contact the roadbed, several gravity sensors between them are compressed, and the detected bearing capacity is displayed on the upper part of the display, thus enabling the bearing capacity testing operation. In addition, the universal ball rotating in the spherical groove can adjust the tilt angle of the first and second pressure plates, making it easier to test roadbeds at different locations. Compared with the testing device in the existing technology "A Foundation Bearing Capacity Testing Device for Highway Roadbed Construction", this utility model, through the cooperation of the above structures, facilitates the testing device to perform bearing capacity testing on roadbeds at different locations, thereby improving the ease of use of the testing device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is an anatomical diagram of the lead screw structure of this utility model;

[0018] Figure 3 This is a structural disassembly diagram of the load-bearing capacity testing component of this utility model;

[0019] Figure 4 This is a structural disassembly diagram of the lifting and stabilizing component of this utility model.

[0020] In the diagram: 100, load-bearing capacity detection component; 101, lead screw; 102, universal ball joint; 103, connecting seat; 104, spherical groove; 105, first pressure plate; 106, second pressure plate; 107, gravity sensor; 108, display; 109, rotating disk;

[0021] 111. Screw hole; 112. Bolt; 121. Connecting piece; 122. Annular groove; 123. Positioning ring; 131. Insertion hole; 132. Insertion rod;

[0022] 200. Lifting and stabilizing assembly; 201. Fixed plate; 202. Conical seat; 203. Fixed support leg; 204. Lifting support leg; 205. Adjustment hole; 206. Telescopic spring; 207. Protrusion; 208. Stabilizing plate; 209. Limit pin;

[0023] 211. Mounting hole; 221. Hinge shaft; 222. Hinge block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] Please see Figure 1 - Figure 4 This utility model provides a foundation bearing capacity testing device for roadbed construction, including a bearing capacity testing component 100 and a lifting and stabilizing component 200;

[0027] The load-bearing capacity detection component 100 includes a lead screw 101, a universal ball 102 detachably mounted on the lower end of the lead screw 101, a connecting seat 103 connected to the lower end of the universal ball 102, a spherical groove 104 formed on the surface of the connecting seat 103, the universal ball 102 rotatably connected inside the spherical groove 104, a first pressure plate 105 fixedly connected to the lower end of the connecting seat 103, a second pressure plate 106 detachably mounted on the lower end of the first pressure plate 105, a plurality of gravity sensors 107 connected between the first pressure plate 105 and the second pressure plate 106, a display 108 formed on the upper end of the first pressure plate 105, and a rotating disk 109 fixedly connected to the upper end of the lead screw 101.

[0028] The lifting and stabilizing assembly 200 includes a fixed plate 201. Both the upper and lower ends of the fixed plate 201 are fixedly connected to a conical seat 202. A lead screw 101 is threaded into the fixed plate 201 and the conical seat 202. Several fixed legs 203 are fixedly connected to the side surface of the fixed plate 201. Lifting legs 204 are slidably connected to the lower ends of the fixed legs 203. Several adjusting holes 205 are equidistantly opened on the surface of the fixed legs 203. A telescopic spring 206 is provided inside the lifting leg 204. A protrusion 207 is fixedly connected to the upper end of the telescopic spring 206. A stabilizing plate 208 is hinged to the lower end of the lifting leg 204. A limit pin 209 is fixedly connected to the lower end of the stabilizing plate 208.

[0029] In one specific embodiment, the load-bearing capacity detection component 100, in conjunction with the lifting and stabilizing component 200, not only facilitates the use of the detection component in roadbed environments with different slopes, thereby enhancing the versatility of the detection device, but also facilitates load-bearing capacity testing of roadbeds at different locations through the cooperation of the above structures, thus enhancing the ease of use of the detection device. First, the detection device is placed on the upper part of the roadbed in different environments. When the road surface is uneven, the stabilizing plate 208 and the lifting legs 204 are hinged, thus making it suitable for use on roadbeds with different inclinations. Then, several protrusions 207 in the lifting legs 204 are engaged with adjustment holes 205 at different heights on the surface of the fixed legs 203, thereby ensuring that the detection device remains horizontal on roadbeds with different slopes. Finally, the limiting pin 209 is inserted. The testing device can be fixed under the roadbed. When performing the load-bearing capacity test, the rotating disk 109 first rotates the lead screw 101 clockwise or counterclockwise along the fixed disk 201, thereby lowering the first pressure plate 105 and the second pressure plate 106. When the first pressure plate 105 and the second pressure plate 106 descend and contact the roadbed, the several gravity sensors 107 between the first pressure plate 105 and the second pressure plate 106 are squeezed by force. The detected load-bearing capacity is displayed on the upper part of the display 108, and the load-bearing capacity test can be performed. At the same time, the universal ball 102 rotates in the spherical groove 104, thereby adjusting the tilt angle of the first pressure plate 105 and the second pressure plate 106. This makes it easier to perform the test on the roadbed at different locations, thus improving the ease of use of the testing device.

[0030] Please see Figure 2 and Figure 3 The lower end of the lead screw 101 is provided with a screw hole 111, and the upper end of the universal ball 102 is fixedly connected with a bolt 112, which is threaded into the inside of the screw hole 111.

[0031] In one specific embodiment, the bolt 112 is threaded into the screw hole 111, which improves the installation stability and ease of disassembly and replacement between the universal ball 102 and the lead screw 101.

[0032] Please see Figure 2 and Figure 3 The upper end of the universal ball 102 is fixedly connected to a connecting piece 121, and the upper end of the connecting piece 121 is provided with an annular groove 122. The lower end of the lead screw 101 is fixedly connected to a positioning ring 123, which is engaged inside the annular groove 122.

[0033] In one specific embodiment, the positioning ring 123 is engaged inside the annular groove 122, thereby further improving the connection stability between the universal ball 102 and the lead screw 101.

[0034] Please see Figure 2 and Figure 3 The surfaces of the first pressure plate 105 and the second pressure plate 106 are provided with a number of insertion holes 131. The upper and lower ends of the gravity sensor 107 are fixedly connected with insertion rods 132, which are inserted into the insertion holes 131.

[0035] In one specific embodiment, the plug rod 132 is inserted into the plug hole 131, thereby improving the installation stability and ease of disassembly and replacement between the several gravity sensors 107, the first pressure plate 105, and the second pressure plate 106.

[0036] Please see Figure 4 The surface of the lifting outrigger 204 is provided with mounting holes 211, and the telescopic spring 206 is installed inside the mounting holes 211.

[0037] In one specific embodiment, the mounting hole 211 facilitates the quick installation of the telescopic spring 206 and the lifting outrigger 204 and improves installation stability.

[0038] Please see Figure 4 The lower end of the lifting outrigger 204 is fixedly connected to a hinge shaft 221, and the upper end of the stabilizing plate 208 is fixedly connected to a hinge block 222. The hinge shaft 221 and the hinge block 222 are hinged to each other.

[0039] In one specific embodiment, the hinge block 222 and the hinge shaft 221 are hinged to each other, which facilitates the smoothness of angle adjustment of the stabilizing plate 208.

[0040] Please see Figure 2 and Figure 3 The first pressure plate 105 and the second pressure plate 106 are made of stainless steel, and the gravity sensor 107 and the display 108 are electrically connected.

[0041] In one specific embodiment, the first pressure plate 105 and the second pressure plate 106, made of stainless steel, can prevent rust and wear, and extend their service life.

[0042] Working principle: In use, the testing device is first placed on the roadbed in different environments. When the road surface is uneven, the stabilizing plate 208 and the lifting legs 204 are hinged, making it suitable for roadbeds with different inclinations. At this time, the protrusions 207 in several lifting legs 204 are engaged with the adjustment holes 205 at different heights on the surface of the fixed legs 203, thereby ensuring that the testing device remains horizontal on roadbeds with different slopes. Finally, the limiting pins 209 are inserted into the roadbed to fix the testing device. When performing the load-bearing capacity test, the rotating disk 109 first drives the lead screw 101 clockwise along the fixed disk 201. The device can be rotated counterclockwise to lower the first pressure plate 105 and the second pressure plate 106. When the first pressure plate 105 and the second pressure plate 106 descend and come into contact with the roadbed, the several gravity sensors 107 between the first pressure plate 105 and the second pressure plate 106 are squeezed by force. The detected bearing capacity is displayed on the upper part of the display 108, thereby enabling the bearing capacity detection operation. At the same time, the universal ball 102 can rotate in the spherical groove 104 to adjust the tilt angle of the first pressure plate 105 and the second pressure plate 106. Therefore, it is convenient to perform detection operations on the roadbed at different positions, thereby improving the ease of use of the detection device.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation bearing capacity testing device for roadbed construction, characterized in that, include: A load-bearing capacity testing component (100) includes a lead screw (101), a universal ball (102) is detachably installed at the lower end of the lead screw (101), a connecting seat (103) is connected to the lower end of the universal ball (102), a spherical groove (104) is opened on the surface of the connecting seat (103), the universal ball (102) is rotatably connected to the inside of the spherical groove (104), a first pressure plate (105) is fixedly connected to the lower end of the connecting seat (103), a second pressure plate (106) is detachably installed at the lower end of the first pressure plate (105), a plurality of gravity sensors (107) are connected between the first pressure plate (105) and the second pressure plate (106), a display (108) is opened at the upper end of the first pressure plate (105), and a rotating disk (109) is fixedly connected to the upper end of the lead screw (101). A lifting and stabilizing assembly (200) includes a fixed plate (201), with a conical seat (202) fixedly connected to both the upper and lower ends of the fixed plate (201). A lead screw (101) is threaded into the fixed plate (201) and the conical seat (202). A plurality of fixed legs (203) are fixedly connected to the side surface of the fixed plate (201). A lifting leg (204) is slidably connected to the lower end of each of the fixed legs (203). A plurality of adjusting holes (205) are equidistantly opened on the surface of the fixed legs (203). A telescopic spring (206) is provided inside the lifting leg (204). A protrusion (207) is fixedly connected to the upper end of the telescopic spring (206). A stabilizing plate (208) is hinged to the lower end of the lifting leg (204). A limit pin (209) is fixedly connected to the lower end of the stabilizing plate (208).

2. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The lower end of the lead screw (101) is provided with a screw hole (111), and the upper end of the universal ball (102) is fixedly connected with a bolt (112), which is threaded into the inside of the screw hole (111).

3. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The upper end of the universal ball (102) is fixedly connected to a connecting piece (121), and the upper end of the connecting piece (121) is provided with an annular groove (122). The lower end of the lead screw (101) is fixedly connected to a positioning ring (123), and the positioning ring (123) is engaged inside the annular groove (122).

4. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The first pressure plate (105) and the second pressure plate (106) have several insertion holes (131) on their surfaces. The upper and lower ends of the gravity sensor (107) are fixedly connected with insertion rods (132), and the insertion rods (132) are inserted into the insertion holes (131).

5. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The surface of the lifting outrigger (204) is provided with a mounting hole (211), and the telescopic spring (206) is installed inside the mounting hole (211).

6. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The lower end of the lifting outrigger (204) is fixedly connected to a hinge shaft (221), and the upper end of the stabilizing plate (208) is fixedly connected to a hinge block (222). The hinge shaft (221) and the hinge block (222) are hinged to each other.

7. The foundation bearing capacity testing device for roadbed construction according to claim 1, characterized in that: The first pressure plate (105) and the second pressure plate (106) are made of stainless steel, and the gravity sensor (107) and the display (108) are electrically connected.

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