Highway subgrade compaction degree detection device
By setting multiple limit rings with reduced diameters in sequence in the sampling holes of the roadbed compaction detection device and making them removably connected, the problems of low flexibility and high cost caused by fixing the sampling hole diameter in the prior art are solved, and flexible adaptation of the diameters of multiple test pits and reduction of construction costs are achieved.
Patent Information
- Application Number
- CN202411900144.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-03-04
AI Technical Summary
The sampling hole diameter of the existing roadbed compaction detection device is fixed, which cannot meet the requirements of multiple test pit diameters in different regions and base layer thicknesses, resulting in low application flexibility, high cost and difficulty in carrying.
A substrate is designed, and multiple limit rings with reduced diameters are arranged coaxially in the sampling hole. The inner diameter of the limit ring matches the test pit standards of different diameters, and the limit rings are removable connections, which facilitates the selection of suitable limit rings according to needs.
Through the removable connection of multiple limit rings, the excavation needs of multiple test pits of different diameters can be met, the scope of application is expanded, the construction cost is reduced, and the operation is simplified.
Smart Images
Figure CN119553647A_ABST
Abstract
Description
Technical field:
[0001] The invention relates to the field of detection devices, in particular to a device for detecting the compaction degree of a highway roadbed. Background technology:
[0002] During the construction of highway roadbed, it is necessary to detect the compaction degree to ensure the construction quality. There are many ways to detect the compaction degree of roadbed in the prior art, and the sand injection method is one of them. When using the sand injection method, it is necessary to use the sampling holes on the substrate to perform soil sampling operations at the designated roadbed position, and the diameter of the sampling holes on the existing substrate is usually fixed. In the actual construction process, affected by the thickness of the base layer and other factors, the diameter of the test pit when sampling in different regions usually has several different standards. At this time, the substrate with a single diameter sampling hole is limited in use and has low application flexibility. In order to meet the use needs, multiple related equipment are usually purchased, which not only increases the construction cost, but also increases the burden of storage and carrying. Summary of the invention:
[0003] The technical problem to be solved by the present invention is to provide a highway roadbed compaction detection device, which can meet the excavation requirements of multiple test pits with different diameters, expand its application scope and reduce construction costs.
[0004] The object of the present invention is achieved in that:
[0005] The invention comprises a base plate, which is composed of a bottom plate and side plates connected to the bottom plate and extending upwards. A sampling hole is provided through the middle of the bottom plate of the base plate. A plurality of limiting rings with successively decreasing diameters are coaxially arranged in the sampling hole, and the inner diameter of the limiting ring matches the diameter standard of the test pit specified in the prior art. The plurality of limiting rings and the limiting ring located at the outermost part and the sampling hole are all detachably connected.
[0006] The limiting ring connected to the sampling hole is the first limiting ring, the limiting ring in the middle is the second limiting ring, and the limiting ring located on the innermost side is the third limiting ring. The first limiting ring consists of a first inner ring body and a first outer ring body, and the second limiting ring consists of a second inner ring body and a second outer ring body. The inner ring lower ends of the outer ring bodies of the first limiting ring and the second limiting ring are connected to the outer ring upper ends of the inner ring bodies, and the thickness and width of the inner ring bodies and the outer ring bodies are consistent.
[0007] The third limiting ring is annular, and the thickness of the third limiting ring is adapted to the thickness of the outer ring body of the second limiting ring;
[0008] The lower ends of the inner rings of all the limiting rings are connected with limiting sleeves extending downwards.
[0009] An annular limiting ring accommodating groove is provided on the bottom plate of the substrate outside the sampling hole, the width of the limiting ring accommodating groove is adapted to the width of the first outer ring body of the first limiting ring, and the depth of the limiting ring accommodating groove is adapted to the thickness of the first outer ring body of the first limiting ring; the first outer ring body of the first limiting ring is placed in the limiting accommodating groove, the second outer ring body of the second limiting ring is placed on the first inner ring body of the first limiting ring, the width of the third limiting ring is greater than the width of the inner ring body of the second limiting ring, and the third limiting ring is placed on the second inner ring body of the second limiting ring.
[0010] In this way, after all the limiting rings are connected, their upper surfaces are in the same plane and are also in the same plane as the upper surface of the bottom plate of the substrate; the lower ends of the limiting sleeves are in the same plane as the lower surface of the substrate. Select the corresponding limiting ring according to the diameter of the test pit.
[0011] Two positioning plates are symmetrically arranged on the bottom plates on both sides of the sampling hole, and the inner ends of the positioning plates are pressed on the top of the installed limiting rings to realize the positioning of the limiting rings;
[0012] The outer ends of the two positioning plates are provided with mounting holes, and positioning rods are movably inserted into the mounting holes. The bottom plate of the base plate is provided with a plurality of positioning holes arranged inside and outside at positions corresponding to the positioning plates for the positioning rods to pass through, that is, the positioning holes are arranged on the moving trajectory of the positioning plates moving inside and outside, and the number of positioning holes matches the number of limiting rings; when the positioning rod on the positioning plate is inserted into the innermost positioning hole, the inner end of the positioning plate can be pressed on the third limiting ring, and when the positioning rod on the positioning plate is inserted into the outermost positioning hole, the inner end of the positioning plate is pressed on the first limiting ring; that is, by inserting the positioning rods passing through the positioning plates into different positioning holes accordingly, the positioning plates can be moved while ensuring the positioning of different limiting rings.
[0013] The bottom of the positioning rod is a cylindrical structure, the top of the cylindrical structure is a prismatic structure, the top of the prismatic structure is a cylindrical structure, the prism shape can be a cuboid or a triangular prism, and the shape of each positioning hole matches the shape and specification size of the positioning rod, that is, the lower part of the positioning hole is cylindrical, the middle part is prismatic, and the upper part is cylindrical; when the positioning rod is inserted into the positioning hole, the cylindrical part of the lower part of the positioning rod is placed in the cylindrical part of the lower part of the positioning hole, the prismatic part of the middle part of the positioning rod is located at the prismatic part of the middle part of the positioning hole, and the cylindrical part of the upper part of the positioning rod is located at the cylindrical part of the upper part of the positioning hole;
[0014] A positioning groove extending upward and matching with the two positioning plates is opened on the lower surface of the sand filling cylinder. When the sand filling cylinder is placed on the bottom plate of the base plate, the two positioning plates are exposed from the two positioning grooves. The positioning of the sand filling cylinder is achieved by the cooperation between the positioning plates and the positioning grooves.
[0015] The opening diameter at the bottom of the sand filling cylinder is smaller than the inner diameter of the third limiting ring to ensure that the sand falls smoothly into the test pit. At the same time, the outer diameter of the sand filling cylinder is larger than the outer diameter of the first limiting ring to ensure stable contact between the sand filling cylinder and the substrate.
[0016] In order to reduce the impact on the placement of the sand filling cylinder, the mounting hole opened on the positioning plate is opened in the form of a countersunk hole, and the top end of the positioning rod is not higher than the upper surface of the positioning plate when it is in the working state.
[0017] The outer surfaces of the left and right side panels of the base plate are provided with accommodating grooves with openings facing outward, and a pedal is provided in each accommodating groove. The pedal consists of a flat plate section and a protruding section connected together, wherein the protruding section is located above the flat plate section, and the protruding section consists of a vertical plate and two upper and lower horizontal plates. The outward ends of the upper and lower horizontal plates are respectively fixed to the upper and lower ends of the vertical plate, and the inward end of the horizontal plate located below is fixed to the upper end of the flat plate section. Sleeves are fixed to the front and rear ends of the lower end of the flat plate section of the pedal, and the side panels of the base plate are opened at positions corresponding to the two sleeves. The two sleeves are respectively inserted into the two holes of the side panels to realize the rotational connection between the sleeves and the side panels.
[0018] A slide groove is provided on the outward surface of the lower part of the flat plate section of the pedal, and a limit rod is slidably provided in the slide groove. The limit rod and the slide groove are in sliding contact. An adjustment block exposed from the slide groove is fixed to the end of the limit rod away from the side plate, and the other end of the limit rod extends into the sleeve. The hole in the side plate is connected to a limit hole extending into the inside of the side plate. By moving the adjustment block from the outside, the limit rod can be extended into the limit hole of the side plate through the hole in the side plate.
[0019] The limiting rod is a prismatic structure, and the limiting hole matches the shape of the limiting rod.
[0020] The lower surface of the lower transverse plate of the protruding section of the pedal is provided with a notch.
[0021] The advantages of the present invention are as follows: by coaxially arranging multiple limiting rings with successively decreasing diameters in the sampling hole, the inner diameters of different limiting rings can be utilized to meet the needs of opening test pits of different diameters; since the multiple limiting rings and the limiting rings and the sampling holes are detachably connected, when in use, it is only necessary to remove or install the corresponding limiting rings as needed. The operation is easy and the structure is simple. There is no need to purchase multiple additional devices to meet different usage needs. This not only reduces construction costs, but also does not cause a heavy burden on storage and transportation due to the large number of devices. The present invention is highly practical. Description of the drawings:
[0022] Figure 1 It is a schematic diagram of the structure of the present invention;
[0023] Figure 2 is a partial longitudinal cross-sectional view of the substrate in the present invention;
[0024] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;
[0025] Figure 4 It is a schematic diagram of the structure of the limit ring in this practicality;
[0026] Figure 5 It is a schematic diagram of the connection state of multiple limit rings in the present invention;
[0027] Figure 6 It is a structural schematic diagram of the positioning rod in the present invention;
[0028] Figure 7 It is a schematic diagram of the connection state of the pedal and the side panel in the present invention;
[0029] Figure 8 It is a side structural schematic diagram of the pedal in the present invention. Specific implementation method:
[0030] Combine the following Figure 1-8 The present invention is further described;
[0031] It includes a base plate 1, which consists of a bottom plate 1-1 and side plates 1-2 connected to the bottom plate and extending upward. A sampling hole 2 is opened in the middle of the bottom plate of the base plate. A plurality of limiting rings 3 with successively decreasing diameters are coaxially arranged in the sampling hole. The number of the limiting rings is usually two to three, and the inner diameter of the limiting ring matches the diameter standard of the test pit specified in the prior art. The plurality of limiting rings and the limiting ring located at the outermost part and the sampling hole are all detachably connected, so that test pits with different diameters can be dug by removing different limiting rings.
[0032] The limiting ring connected to the sampling hole is the first limiting ring 3-1, the limiting ring in the middle is the second limiting ring 3-2, and the limiting ring located on the innermost side is the third limiting ring 3-3. The first limiting ring 3-1 consists of a first inner ring body 3-1-1 and a first outer ring body 3-1-2, and the second limiting ring consists of a second inner ring body 3-2-1 and a second outer ring body 3-2-2. The inner ring lower ends of the outer ring bodies of the first limiting ring and the second limiting ring are connected to the outer ring upper ends of the inner ring bodies, and the thickness and width of the inner ring bodies and the outer ring bodies are consistent.
[0033] The third limiting ring is annular, and the thickness of the third limiting ring is adapted to the thickness of the outer ring body of the second limiting ring;
[0034] The lower ends of the inner rings of all the limiting rings are connected with limiting sleeves 4 extending downwards.
[0035] An annular limiting ring accommodating groove is provided on the bottom plate of the substrate outside the sampling hole, the width of the limiting ring accommodating groove is adapted to the width of the first outer ring body of the first limiting ring, and the depth of the limiting ring accommodating groove is adapted to the thickness of the first outer ring body of the first limiting ring; the first outer ring body of the first limiting ring (i.e. the limiting ring with the largest inner diameter) is placed in the limiting accommodating groove, the second outer ring body of the second limiting ring is placed on the first inner ring body of the first limiting ring, the width of the third limiting ring (i.e. the limiting ring with the smallest inner diameter) is greater than the width of the second inner ring body of the second limiting ring, and the third limiting ring is placed on the second inner ring body of the second limiting ring.
[0036] In this way, after all the limiting rings are connected, their upper surfaces are in the same plane and are also in the same plane as the upper surface of the bottom plate of the base plate; the lower ends of the limiting sleeves are in the same plane as the lower surface of the base plate, which facilitates the digging operation of the test pit and ensures the stability of the base plate when it is placed on the roadbed.
[0037] Select the corresponding limiting ring according to the diameter of the test pit. For example, when the diameter of the test pit corresponds to the inner diameter of the second limiting ring, remove the third limiting ring located on the inner side. At this time, the upper surface of the outer ring body of the second limiting ring is on the same plane as the upper surface of the first limiting ring and the upper surface of the bottom plate of the substrate.
[0038] Two positioning plates 5 are symmetrically arranged on the bottom plates on both sides of the sampling hole, and the inner ends of the positioning plates are pressed on the top of the installed limiting ring to realize the positioning of the limiting ring and ensure the stability of the limiting ring during operation;
[0039] The outer ends of the two positioning plates are provided with mounting holes 5-1, and positioning rods 6 are movably inserted into the mounting holes. The bottom plate of the base plate is provided with a plurality of positioning holes 7 arranged inside and outside at the position corresponding to the positioning plate for the positioning rods to pass through, that is, each positioning hole is arranged on the moving track of the positioning plate moving inside and outside, and the number of positioning holes matches the number of limiting rings; when the positioning rod on the positioning plate is inserted into the innermost positioning hole, the inner end of the positioning plate can be pressed on the third limiting ring, and when the positioning rod on the positioning plate is inserted into the outermost positioning hole, the inner end of the positioning plate is pressed on the first limiting ring; that is, by inserting the positioning rods passing through the positioning plate into different positioning holes, the positioning plate can be moved while ensuring the positioning of different limiting rings. The positioning plate is adjusted to move radially along the positioning ring so as to be removed from the corresponding limiting ring and take out the corresponding limiting ring.
[0040] Among them, the bottom of the positioning rod 6 is a cylindrical structure 6-1, the middle part is a prismatic structure 6-2, and the upper part is a cylindrical structure. The prism can be a cuboid or a triangular prism. The shape of each positioning hole matches the shape and specification size of the positioning rod, that is, the lower part of the positioning hole is cylindrical, the middle part is prismatic, and the upper part is cylindrical; when the positioning rod is extended into the positioning hole, the cylindrical part of the lower part of the positioning rod is placed in the cylindrical part of the lower part of the positioning hole, the prismatic part of the middle part of the positioning rod is located at the prismatic part of the middle part of the positioning hole, and the cylindrical part of the upper part of the positioning rod is located at the cylindrical part of the upper part of the positioning hole. Such an arrangement can facilitate the positioning plate to be limited to avoid the positioning plate from rotating along the positioning rod during operation;
[0041] The lower surface of the sand filling tube 8 is provided with a positioning groove extending upward and matching with the two positioning plates. When the sand filling tube is placed on the bottom plate of the base plate, the two positioning plates are exposed from the two positioning grooves. The positioning of the sand filling tube is achieved by the cooperation between the positioning plates and the positioning grooves.
[0042] The opening diameter at the bottom of the sand filling cylinder is smaller than the inner diameter of the third limiting ring to ensure that the sand falls smoothly into the test pit. At the same time, the outer diameter of the sand filling cylinder is larger than the outer diameter of the first limiting ring to ensure stable contact between the sand filling cylinder and the substrate.
[0043] In order to reduce the impact on the placement of the sand filling cylinder, the mounting hole 5-1 on the positioning plate 5 is opened in the form of a countersunk hole, and the top end of the positioning rod 6 is not higher than the upper surface of the positioning plate when it is in working state; in order to facilitate the insertion and removal of the positioning rod, the outer diameter of the countersunk hole can be set larger to provide sufficient operating space for the operation of the positioning rod.
[0044] The outer surfaces of the left and right side panels of the base plate are provided with accommodating grooves 1-3 with openings facing outward, and a pedal 9 is provided in each accommodating groove. The pedal consists of a flat plate section 9-1 and a protruding section 9-2 connected together, wherein the protruding section is located above the flat plate section, and the protruding section consists of a vertical plate and two upper and lower horizontal plates, the outward ends of the upper and lower horizontal plates are respectively fixed to the upper and lower ends of the vertical plate, and the inward end of the horizontal plate located below is fixed to the upper end of the flat plate section. When the pedal is unfolded and in a horizontal state, the protruding section of the pedal can contact the ground, and sleeves 10 are fixed to the front and rear ends of the lower end of the flat plate section of the pedal, and the side panels of the base plate have holes at the positions corresponding to the two sleeves, and the two sleeves are respectively inserted into the two holes of the side panels to realize the rotational connection between the sleeves and the side panels.
[0045] A slide groove 11 is provided on the outward surface of the lower part of the flat plate section of the pedal, and a limit rod 12 is slidably provided in the slide groove. The limit rod and the slide groove are in sliding contact. An adjustment block 13 exposed from the slide groove is fixed to the end of the limit rod away from the side plate, and the other end of the limit rod extends into the sleeve. Moving the adjustment block can make the limit rod extend from the outer end of the sleeve into the hole of the side plate. The hole of the side plate is connected to the limit hole 1-4 extending into the inside of the side plate. By moving the adjustment block from the outside, the limit rod can extend into the limit hole of the side plate through the hole of the side plate.
[0046] The limiting rod is a prismatic structure, the limiting hole matches the shape of the limiting rod, and the limiting rod is a prismatic structure that can prevent the sleeve from turning over, thereby ensuring the stability of the pedal in a non-working state.
[0047] The lower surface of the lower horizontal plate of the protruding section of the pedal is provided with a notch 9-3, and the setting of the notch can provide a fulcrum for the hands of workers when they carry the substrate, thereby improving the convenience of carrying the substrate.
[0048] The pedal can be lowered along the hinge point and in a horizontal state, so that the construction workers can step on the pedal to fix the base plate during work, which can not only ensure the stability of the base plate, but also avoid the damage to the base plate caused by the workers stepping on the side plate of the base plate to ensure the stability of the base plate in the prior art. The pedal provides a stable foothold for the workers, which can not only ensure the stability of the base plate, but also improve the comfort of the workers when positioning the base plate.
[0049] When using this device, first select and retain the corresponding limit ring according to the diameter of the test pit, then unfold the two pedals, step on the pedals to fix the base plate, and start the excavation operation of the test pit; after the excavation of the test pit is completed, weigh the soil cleaned out of it; then place the sand filling cylinder filled with sand on the base plate after weighing, and discharge the sand into the test pit accordingly. After the sand fills the test pit, take out the sand filling cylinder and weigh the remaining sand in it to find out the weight of the sand used; finally, use the obtained data to calculate according to the relevant formula. The whole operation is simple and fast, with high operational flexibility, wide application range and strong practicality.
[0050] The device can provide a reference for the excavation of test pits with different diameters through the detachable connection of multiple limit rings, thereby expanding the application scope of the detection device. It has a simple structure, great flexibility, easy operation and strong practicality.
[0051] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A roadbed compaction detection device, comprising a base plate (1), the base plate comprising a bottom plate (1-1) and side plates (1-2) connected to the bottom plate and extending upward, a sampling hole (2) penetrating the middle of the bottom plate of the base plate, and characterized in that: A plurality of limiting rings (3) with successively decreasing diameters are coaxially arranged in the sampling hole, wherein the plurality of limiting rings and the limiting ring located at the outermost portion and the sampling hole are all detachably connected; The limiting ring connected to the sampling hole is the first limiting ring (3-1), the limiting ring located in the middle is the second limiting ring (3-2), and the limiting ring located at the innermost side is the third limiting ring (3-3), the first limiting ring (3-1) is composed of a first inner ring body (3-1-1) and a first outer ring body (3-1-2), the second limiting ring is composed of a second inner ring body (3-2-1) and a second outer ring body (3-2-2), the inner ring lower ends of the outer ring bodies of the first limiting ring and the second limiting ring are connected to the outer ring upper ends of the inner ring body, and the thickness and width of the inner ring body and the outer ring body are consistent; The third limiting ring is annular, and the thickness of the third limiting ring is adapted to the thickness of the outer ring body of the second limiting ring; The lower ends of the inner rings of all the limiting rings are connected with limiting sleeves (4) extending downwards; An annular limiting ring accommodating groove is provided on the bottom plate of the substrate outside the sampling hole, the width of the limiting ring accommodating groove is adapted to the width of the first outer ring body of the first limiting ring, and the depth of the limiting ring accommodating groove is adapted to the thickness of the first outer ring body of the first limiting ring; the first outer ring body of the first limiting ring is placed in the limiting accommodating groove, the second outer ring body of the second limiting ring is placed on the first inner ring body of the first limiting ring, the width of the third limiting ring is greater than the width of the second inner ring body of the second limiting ring, and the third limiting ring is placed on the second inner ring body of the second limiting ring; Two positioning plates (5) are symmetrically arranged on the bottom plates on both sides of the sampling hole, and the inner ends of the positioning plates are pressed against the top of the installed limiting rings; The outer ends of the two positioning plates are provided with mounting holes (5-1), positioning rods (6) are movably inserted into the mounting holes, and the bottom plate of the base plate is provided with a plurality of positioning holes (7) arranged inside and outside at positions corresponding to the positioning plates for the positioning rods to penetrate; A positioning groove extending upward and matching with the two positioning plates is provided on the lower surface of the sand filling cylinder (8); when the sand filling cylinder is placed on the bottom plate of the base plate, the two positioning plates are exposed from the two positioning grooves; The outer surfaces of the left and right side plates of the base plate are provided with accommodating grooves (1-3) with openings facing outwards, and each accommodating groove is provided with a pedal (9), which is composed of a flat plate section (9-1) and a protruding section (9-2) connected together, wherein the protruding section is located above the flat plate section, and the protruding section is composed of a vertical plate and two upper and lower horizontal plates, the outward ends of the upper and lower horizontal plates are respectively fixed to the upper and lower ends of the vertical plate, and the inward end of the horizontal plate located at the bottom is fixed to the upper end of the flat plate section, and sleeves (10) are fixed to the front and rear ends of the lower end of the flat plate section of the pedal, and the side plates of the base plate are provided with holes at positions corresponding to the two sleeves, and the two sleeves are respectively inserted into the two holes of the side plates to realize the rotational connection between the sleeves and the side plates; A slide groove (11) is provided on the outward surface of the lower part of the flat plate section of the pedal, and a limit rod (12) is slidably provided in the slide groove. The limit rod and the slide groove are in sliding contact. An adjustment block (13) exposed from the slide groove is fixed to one end of the limit rod away from the side plate. The other end of the limit rod extends into the sleeve. The hole of the side plate is connected to a limit hole (1-4) extending into the inside of the side plate. Moving the adjustment block can make the limit rod extend into the limit hole of the side plate through the hole of the side plate.
2. The highway subgrade compaction detection device according to claim 1 is characterized in that: The bottom of the positioning rod (6) is a cylindrical structure (6-1), the middle is a prismatic structure (6-2), and the upper part is a cylindrical structure. The prism is a rectangular parallelepiped or a triangular prism. The shape of each positioning hole matches the shape and specification size of the positioning rod, that is, the lower part of the positioning hole is cylindrical, the middle part is prismatic, and the upper part is cylindrical.
3. The highway subgrade compaction detection device according to claim 1 or 2, characterized in that: The limiting rod is a prismatic structure, and the limiting hole matches the shape of the limiting rod.
4. The highway subgrade compaction detection device according to claim 1 or 2, characterized in that: The lower surface of the lower transverse plate of the protruding section of the pedal is provided with a notch (9-3).
5. The highway subgrade compaction detection device according to claim 1 or 2, characterized in that: After all the limiting rings are connected, their upper surfaces are in the same plane and are also in the same plane as the upper surface of the bottom plate of the base plate; the lower ends of the limiting sleeves are in the same plane as the lower surface of the base plate.
6. The highway subgrade compaction detection device according to claim 1 or 2, characterized in that: The opening diameter of the bottom end of the sand filling tube is smaller than the inner diameter of the third limiting ring, and the outer diameter of the sand filling tube is larger than the outer diameter of the first limiting ring.