Portable roadbed compaction detection device

Abstract

The invention discloses a portable roadbed compaction detection device which comprises a mobile carrier, and a leveling mechanism and a hole digging mechanism are arranged on the mobile carrier. The leveling mechanism is used for leveling a roadbed with uneven grooves, the leveling degree is H, and H is the height difference of concave and convex surfaces or is slightly larger than the height difference of the concave and convex surfaces; the hole digging mechanism is used for digging a pit hole with the thickness of a to-be-measured layer surface in the flattened roadbed, and when the thickness of the to-be-measured layer surface is larger than 20 cm, the depth of the dug pit hole is 15-20 cm. The roadbed leveling and hole digging device has two functions of leveling and hole digging on a roadbed, and the roadbed is leveled before hole digging, so that the detection after hole digging is more accurate, the hole digging depth is adjustable, and the roadbed leveling and hole digging device can meet the requirements of various different scenes.

Description

Technical Field

[0001] The invention relates to the technical field of road construction detection devices, and more specifically, to a portable roadbed compaction detection device. Background Art

[0002] The compaction of the roadbed must be tested during the pavement construction process and the acceptance stage after construction to ensure the quality of highway roadbed and pavement. The compaction detection methods include sand filling method, ring knife method, core drilling method, nuclear density meter method, tank water method and non-nuclear density meter method. According to the "Highway Roadbed and Pavement Field Test Procedure" JTG3450-2019, the ring knife method and pit digging and sand filling method can finally calculate the compaction degree, which is also the most commonly used detection method, that is, both require digging annular holes in the roadbed.

[0003] Due to the low efficiency of manual digging, a utility model patent with patent number 202222556453.5 discloses a portable roadbed compaction detection device, which includes a base plate, universal wheels are arranged around the outer side of the base plate, a mounting frame is arranged at the top of the base plate, an adjustment component cooperating with the base plate is arranged on the inner side of the mounting frame, a servo motor is arranged in the middle of the adjustment component, the output shaft of the servo motor passes through the adjustment component and is connected to the drill bit, a through hole cooperating with the drill bit is opened in the middle position of the base plate, a group of threaded rods are arranged in the middle of both sides of the base plate, a fixing component is arranged on the outer side of the circumference of the threaded rod, a limiting ring is arranged on the outer side of the fixing component, and fixing rods cooperating with the through hole are arranged at both ends of the limiting ring.

[0004] Although the above patent realizes mechanized operation and improves the efficiency of digging holes, its function is relatively simple. It can only dig holes and cannot level the surface of the roadbed. In addition, the samples dug out by the spiral drill bit are not easy to collect; secondly, they are too scattered, and the water inside is easy to evaporate, which will cause large errors in the test results. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the traditional detection device has a relatively single function, and thus a portable roadbed compaction detection device with multiple functions is provided.

[0006] The technical solution adopted by the present invention to solve its technical problem is: A portable roadbed compaction detection device comprises a mobile carrier, on which a leveling mechanism and a digging mechanism are arranged; The leveling mechanism is used to level the uneven roadbed with grooves, and the leveling degree is H, where H is the height difference between the concave and convex surfaces or slightly greater than the height difference between the concave and convex surfaces; The digging mechanism is used to dig a hole of the thickness of the layer to be measured on the flattened roadbed. When the thickness of the layer to be measured is greater than 20CM, the depth of the dug hole is 15-20CM.

[0007] Preferably, the hole-digging mechanism comprises a cutter ring and a power assembly for driving the cutter ring to cut the roadbed. A guide post is vertically installed on the moving carrier, and a sliding seat is slidably connected to the guide post. The power assembly is installed on the sliding seat, and the cutter ring is controlled by the power assembly to cut an annular hole in the roadbed.

[0008] Preferably, the hole-digging mechanism is controlled to lift or lower in an electric mode or a manual mode.

[0009] Preferably, a lifting mechanism for manually controlling the lifting of the hole-digging mechanism is provided on the moving carrier. The lifting mechanism comprises a hand wheel and a gear shaft. The hand wheel is installed at one end of the gear shaft, the gear shaft is movably connected to the moving carrier, a rack is arranged on the side surface of the sliding seat, the rack extends along the height direction of the sliding seat, and the gear shaft meshes with the rack.

[0010] Preferably, an elastic member for quickly rotating the gear shaft is provided on the gear shaft.

[0011] Preferably, the cutter ring comprises a cutting outer cylinder and a lining sleeve. The lining sleeve is movably connected in the cutting outer cylinder, and the cutting outer cylinder is connected to the power assembly; Hoops are provided on the side walls of both the cutting outer cylinder and the lining sleeve, the hoops on the cutting outer cylinder and the hoops on the lining sleeve are concentrically arranged, and the hoop protruding from the inner side wall of the cutting outer cylinder is located within the hoop recessed from the outer side wall of the lining sleeve.

[0012] Preferably, the power assembly comprises a transmission shaft, a motor, an eccentric disc and a toggling member. The motor is movably connected to the sliding seat, and the output shaft of the motor is arranged vertically. The transmission shaft is arranged parallel to the output shaft of the motor. The transmission shaft is installed on the motor through a bearing seat near its top end. The eccentric disc is fixedly connected to the output shaft of the motor. The toggling member is U-shaped, and its closed end is fixedly connected to the transmission shaft. The eccentric shaft on the eccentric disc rotates in the opening of the toggling member and alternately collides with the two inner sides of the toggling member during rotation. The cutting outer cylinder is installed at the bottom end of the transmission shaft.

[0013] Preferably, openings are provided at both ends of the cutting outer cylinder. A circular top plate is arranged near the top inside the cutting outer cylinder. The outer diameter of the circular top plate is equal to the inner diameter of the cutting outer cylinder. The bottom end of the transmission shaft is connected to the center of the upper end surface of the circular top plate. The top of the cutting outer cylinder extends inward with an ear, and a bolt is screwed on the ear. The bottom end of the bolt is movably connected to the top end of the circular top plate.

[0014] Preferably, the operation mode of the leveling mechanism is planing, milling or fine sand filling.

[0015] Preferably: a planer is provided at one end of the bottom of the movable carrier, and the inclination angle of the planer is adjustable.

[0016] The beneficial effects of the present invention are: it has two functions of leveling and digging roads. Before digging, the roadbed is leveled first, so that the detection after digging is more accurate, and the digging depth is adjustable, which can meet the needs of various different scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a portable roadbed compaction detection device; Figure 2 It is a schematic diagram of the cooperation between the eccentric peripheral disk and the toggle member; Figure 3 is a schematic diagram of a ring knife; Figure 4 for Figure 3 The enlarged view of point A in the middle; Figure 5 Schematic diagram for leveling the roadbed surface; In the figure: 1. mobile carrier; 2. leveling mechanism; 21. planer; 3. digging mechanism; 31. ring knife; 311. cutting outer cylinder; 312. inner sleeve; 32. power assembly; 321. transmission shaft; 322. motor; 323. eccentric shaft disc; 324. toggle member; 4. guide column; 41. slide seat; 5. lifting mechanism; 51. gear shaft; 52. hand wheel; 6. round top plate; 7. support ear; 8. bolt. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by one of ordinary skill in the art to which this application relates.

[0020] In the present invention, unless otherwise specified, the directions used, such as "up" and "down", usually refer to the directions shown in the drawings, or to the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0021] according to Figures 1-5 As shown, a portable roadbed compaction detection device includes a mobile carrier, on which a leveling mechanism and a digging mechanism are arranged; the leveling mechanism is used to level the uneven roadbed with a groove, and the leveling degree is H, where H is the height difference between the concave and convex surfaces (such asFigure 5 The middle cutting surface is at point A) or slightly larger than the height difference of the concave-convex surface (such as Figure 5 the middle cutting surface is at point B); the hole-digging mechanism is used to dig a hole with the thickness of the layer to be measured in the levelled roadbed. When the thickness of the layer to be measured is greater than 20CM, the depth of the dug hole is 15 - 20CM.

[0022] According to Figures 1-5 As shown, the hole-digging mechanism includes a core cutter and a power assembly for driving the core cutter to cut the roadbed. A vertically installed guide post is arranged on the moving carrier, and a sliding seat is slidably connected to the guide post. The power assembly is installed on the sliding seat, and the core cutter is controlled by the power assembly to cut a circular hole in the roadbed. The hole-digging mechanism is controlled to lift in an electric mode or a manual mode. In this application, the manual control mode with relatively low manufacturing cost is taken as an example. According to Figures 1-5 As shown, a lifting mechanism for manually controlling the lifting of the hole-digging mechanism is arranged on the moving carrier. The lifting mechanism includes a handwheel and a gear shaft. The handwheel is installed at one end of the gear shaft. The gear shaft is movably connected to the moving carrier. A rack is arranged on the side surface of the sliding seat and extends along the height direction of the sliding seat. The gear shaft meshes with the rack, and an elastic member for quickly rotating the gear shaft is arranged on the gear shaft. The elastic member can be a torsion spring or a volute spring. In this application, the torsion spring is taken as an example. The torsion spring is sleeved on the gear shaft. One end of the torsion spring is clamped with the gear shaft, and the other end is clamped with a rigid structural member for supporting the gear shaft.

[0023] According to Figures 1-5 As shown, the power assembly includes a transmission shaft, a motor, an eccentric disc and a toggling member. The motor is movably connected to the sliding seat, and the output shaft of the motor is arranged vertically. The transmission shaft is arranged parallel to the output shaft of the motor. The transmission shaft is installed on the motor through a bearing seat near its top end. The eccentric disc is fixedly connected to the output shaft of the motor. The toggling member is set as a U shape, and its closed end is fixedly connected to the transmission shaft. The eccentric shaft on the eccentric disc rotates in the opening of the toggling member and alternately collides with the two inner sides of the toggling member during rotation. The cutting outer cylinder is installed at the bottom end of the transmission shaft. Openings are arranged at both ends of the cutting outer cylinder. A circular top plate is arranged near the top inside the cutting outer cylinder. The outer diameter of the circular top plate is equal to the inner diameter of the cutting outer cylinder. The bottom end of the transmission shaft is connected to the center of the upper end surface of the circular top plate. The top of the cutting outer cylinder extends inward with an ear. A bolt is screwed on the ear, and the bottom end of the bolt is movably connected to the top end of the circular top plate.

[0024] According to Figures 1-5 As shown, the motor drives the eccentric disc to rotate, and the eccentric shaft collides with the toggling member, so that the toggling member and the transmission shaft swing back and forth. The swing amplitude is ±5°. The core cutter also swings back and forth to cut the roadbed under the drive of the transmission shaft, rather than circumferentially rotating and cutting, and the generated heat is also smaller to reduce the evaporation of water in the roadbed. The setting of the circular top plate is used to adjust the depth of the dug hole.

[0025] As shown in Figure 3 , the core cutter includes a cutting outer cylinder and a lining sleeve. The lining sleeve is movably connected in the cutting outer cylinder, and the cutting outer cylinder is connected to the power assembly; hoop-shaped grooves that recess inward are provided on the side walls of both the cutting outer cylinder and the lining sleeve. The hoop-shaped grooves on the cutting outer cylinder and the hoop-shaped grooves on the lining sleeve are concentrically arranged, and the hoop-shaped groove protruding from the inner side wall of the cutting outer cylinder is located within the hoop-shaped groove recessed on the outer side wall of the lining sleeve. The lining sleeve and the cutting outer cylinder are interconnected through the hoop-shaped grooves. When connecting, the lining sleeve needs to be first placed in the cutting outer cylinder, and then the hoop-shaped grooves are extruded through a rolling equipment to prevent the lining sleeve from falling out of the cutting outer cylinder. The cutting outer cylinder mainly serves to cut the roadbed and protect the lining sleeve, and the lining sleeve protects the cut circular sample column. When the cutting tool moves upward, the circular sample column is thus carried out. Since the road is composed of different materials laminated on top of each other, the adhesion between different materials is lower than that between the same materials. Coupled with the fit between the circular top plate and the top of the circular sample column, the air pressure is small. Additionally, due to the release of the stress of the material inside the cut sample column and the tight fit generated between the side wall of the lining sleeve, the circular sample column can be smoothly carried out by the core cutter.

[0026] As shown in Figure 1 , the working mode of the leveling mechanism is planing, milling or fine sand filling. In this application, taking the planing mode as an example, a planing tool is provided at one end of the bottom of the moving carrier, and the inclination angle of the planing tool is adjustable. The planing tool is fixed to the clamping plate by screws. The other side of the clamping plate relative to the planing tool is hinged to the moving carrier by a pin. Compression springs and limit plates are respectively arranged on both sides of the clamping plate. The compression spring is arranged on the side of the clamping plate relative to the core cutter. One end of the compression spring is connected to the clamping plate, and the other end is connected to the moving carrier. The limit plate is connected to the moving carrier by screws. By loosening the screws, the limit plate can slide horizontally, thereby adjusting the inclination amplitude of the clamping plate.

[0027] As shown in Figures 1-5 , it has two functions of leveling and digging holes in the roadbed. Before digging holes, the roadbed is first leveled, so that the detection after digging holes is more accurate, and the digging depth is adjustable, which can meet the requirements of various different scenarios.

[0028] It should be noted that the terms used here are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0029] It should be noted that the terms "first", "second", etc. in the description, claims and above-mentioned drawings of this application are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described here can be implemented in an order other than those illustrated or described here.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A portable roadbed compaction detection device, comprising a mobile carrier, characterized in that: A leveling mechanism and a hole-digging mechanism are provided on the mobile carrier; The leveling mechanism is used to level the uneven roadbed of the groove, and the leveling degree is H, where H is the height difference of the concave-convex surface or slightly greater than the height difference of the concave-convex surface; The hole-digging mechanism is used to dig a hole with the thickness of the layer to be measured in the planed roadbed. When the thickness of the layer to be measured is greater than 20 CM, the depth of the dug hole is 15 - 20 CM.

2. The portable subgrade compaction detection device according to claim 1, characterized in that: The hole-digging mechanism includes a core cutter and a power assembly for driving the core cutter to cut the roadbed. A vertically installed guide post is provided on the mobile carrier, and a sliding seat is slidably connected to the guide post. The power assembly is installed on the sliding seat, and the core cutter is controlled by the power assembly to cut a circular hole in the roadbed.

3. The portable subgrade compaction detection device according to claim 2, characterized in that: The hole-digging mechanism is controlled to lift in an electric mode or a manual mode.

4. The portable subgrade compaction detection device according to claim 2 or 3, characterized in that: A lifting mechanism for manually controlling the lifting of the hole-digging mechanism is provided on the mobile carrier. The lifting mechanism includes a handwheel and a gear shaft. The handwheel is installed at one end of the gear shaft, and the gear shaft is movably connected to the mobile carrier. A rack is provided on the side of the sliding seat, and the rack extends along the height direction of the sliding seat. The gear shaft meshes with the rack.

5. The portable subgrade compaction detection device according to claim 4, characterized in that: An elastic member is provided on the gear shaft for enabling it to rotate quickly.

6. The portable subgrade compaction detection device according to claim 5, characterized in that: The core cutter includes a cutting outer cylinder and a lining sleeve. The lining sleeve is movably connected in the cutting outer cylinder, and the cutting outer cylinder is connected to the power assembly; Circular hoops are provided on the side walls of both the cutting outer cylinder and the lining sleeve. The circular hoop on the cutting outer cylinder and the circular hoop on the lining sleeve are concentrically arranged, and the circular hoop protruding from the inner side wall of the cutting outer cylinder is located inside the circular hoop recessed from the outer side wall of the lining sleeve.

7. The portable subgrade compaction detection device according to claim 6, characterized in that: The power assembly includes a transmission shaft, a motor, an eccentric disc and a toggling member. The motor is movably connected to the sliding seat, and the output shaft of the motor is arranged vertically. The transmission shaft is arranged parallel to the output shaft of the motor. The transmission shaft is installed on the motor through a bearing seat near its top end. The eccentric disc is fixedly connected to the output shaft of the motor. The toggling member is U-shaped, and its closed end is fixedly connected to the transmission shaft. The eccentric shaft on the eccentric disc rotates in the opening of the toggling member and alternately collides with the two inner sides of the toggling member during rotation. The cutting outer cylinder is installed at the bottom end of the transmission shaft.

8. The portable subgrade compaction detection device according to claim 7, characterized in that: Openings are provided at both ends of the cutting outer cylinder. A circular top plate is provided near the top inside the cutting outer cylinder. The outer diameter of the circular top plate is equal to the inner diameter of the cutting outer cylinder. The bottom end of the transmission shaft is connected to the center of the upper end surface of the circular top plate. An ear is extended inward at the top of the cutting outer cylinder, and a bolt is screwed on the ear. The bottom end of the bolt is movably connected to the top end of the circular top plate.

9. The portable subgrade compaction detection device according to claim 8, characterized in that: The operation mode of the leveling mechanism is planing, milling or fine sand filling.

10. The portable subgrade compaction detection device according to claim 9, characterized in that: A planer is provided at one end of the bottom of the mobile carrier, and the inclination angle of the planer is adjustable.

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