Device facilitating asphalt pavement coring

Abstract

The utility model provides a device facilitating coring of an asphalt pavement, which comprises a support, the support is connected with a lifting rod, the lower end of the lifting rod is provided with at least three barbs, the barbs are connected with the lifting rod through torsional springs, and the tips of the barbs are obliquely arranged from outside to inside along the lifting rod. The device can be inserted into the ground to take out the asphalt core when the coring machine cannot take out the asphalt core, and a site does not need to be replaced to re-core.

Description

Technical Field

[0001] The utility model relates to the field of municipal road detection, in particular to a device for convenient coring of asphalt pavement. Background Art

[0002] Asphalt coring is an important means of detecting the thickness of asphalt pavement and whether the quality meets the standards. The existing coring is that the cylindrical drill bit of the coring machine drills down to a certain thickness and then rises, and the asphalt core is directly taken out by using the friction between the outer side of the asphalt core and the inner side of the cylindrical drill bit. However, in actual construction, it often happens that the drill bit rises but the asphalt core is left in the road surface, resulting in the coring machine being unable to take out the asphalt core. When encountering this situation, the inspection personnel can only change the location and re-coring for coring inspection. If it still cannot be taken out, they have to continue to change the coring location and re-coring. The coring machine weighs two to three hundred pounds, and it requires four or five people to work together to complete the transfer. Each coring is very time-consuming and labor-intensive. At the same time, the coring machine needs to be supplied with water for each coring. Frequently changing the coring location for coring for a single inspection results in a serious waste of water resources. Utility Model Content

[0003] In view of the above problems, the utility model provides a device for convenient coring of asphalt pavement. The device can be inserted into the ground to remove the asphalt core when the coring machine cannot remove the core, without changing the location and re-coring.

[0004] A device for convenient coring of asphalt pavement includes a support, the support is connected to a lifting rod, the lower end of the lifting rod is provided with at least three barbs, the barbs are connected to the lifting rod through a torsion spring, and the tips of the barbs are arranged inclined from outside to inside along the lifting rod.

[0005] Preferably, an extension bar is provided between the barb and the lifting rod, each barb is connected to the extension bar via a torsion spring, and the upper end of the extension bar is connected to the lifting rod.

[0006] Preferably, the distance between the tip of the barb and the extension strip is greater than the distance between the starting end of the barb and the extension strip.

[0007] Preferably, the extension strips are in the shape of thin sheets, and the three extension strips are evenly arranged along the circumference of the lifting rod.

[0008] Preferably, each extension strip is provided with at least one barb in the vertical direction.

[0009] Preferably, a nut is rotatably connected inside the support, the lifting rod is threadedly engaged with the nut, and a guide rod extending downward is provided at the upper end of the support, and the guide rod is slidably connected to the lifting rod.

[0010] Preferably, the lifting rod is coaxially connected to the nut.

[0011] Preferably, there are at least two guide rods, and the two guide rods are symmetrically distributed about the center of the lifting rod.

[0012] Preferably, the nut is connected to a driving rod for driving the nut to rotate through a transmission mechanism.

[0013] Preferably, the transmission mechanism is a belt transmission mechanism or a worm gear transmission mechanism.

[0014] Preferably, the lower end of the support is rotatably connected to at least three positionable legs.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This utility model utilizes a lifting rod mounted on a support and a barb at its lower end. The lifting rod, with the barb, descends to the asphalt core, whereupon the barb grasps the core and ascends to remove it. During the descent, the gap between the core and the asphalt layer compresses and deforms the torsion spring, causing the barb to retract. During the asphalt core's ascent, the restoring force of the torsion spring forces the barb into the core's surface, whereupon the barbs, acting in concert, grasp the core and retrieve it.

[0017] 2. The positionable rotating legs can be positioned and supported when in use, and folded up when not in use, making it easy to store and carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present invention, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the utility model Figure 2 ;

[0021] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0022] Figure 4 This is a schematic diagram of the support and leg structure in the third embodiment of the present invention;

[0023] In the figure, 1. guide rod, 2. top plate, 3. connecting rod, 4. lifting rod, 5. nut, 6. synchronous belt, 7. driving pulley, 8. support, 9. extension bar, 10. driving rod, 11. supporting leg, 12. barb, 13. torsion spring, 14. screw, 15. locking nut. DETAILED DESCRIPTION

[0024] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0025] Example 1

[0026] like Figure 1-3 As shown, the utility model discloses a device for convenient coring of asphalt pavement. The device designs the support 8 into a cylindrical shape, and a nut 5 is rotatably installed on the inner wall of the cylinder through a bearing. The inner coaxial thread of the nut 5 is connected to the lifting rod 4. The upper end of the support 8 is connected to the top plate 2 through a connecting rod 3. The lower surface of the top plate 2 is connected to two guide rods 1. The guide rods 1 are inserted downward into the lifting rod 4 and are slidably connected to the lifting rod. Three extension bars 9 are provided at the lower end of the lifting rod. The extension bars are in the shape of thin sheets, wherein one side of the thin sheet is tangent to the rotating surface of the lifting rod. The lower inner side surface of each extension bar 9 is connected to a torsion spring 13, which is connected to a barb 12 through the torsion spring 13. The tip of the barb is tilted from the outside to the inside, and is used to hook the asphalt core when lifting.

[0027] When the driving nut 5 rotates in the support 8, under the dual action of the threaded transmission and the guidance of the guide rod 1, the lifting rod 4 descends to the asphalt core position with the barb 12. During the descent process, the gap between the asphalt core and the asphalt layer will squeeze and deform the torsion spring, and the barb 12 will retract toward the extension bar 9. When it descends to the specified position, the driving nut 5 is reversed. Under the dual action of the threaded transmission and the guidance of the guide rod 1, the lifting rod 4 rises with the barb 12. Since the distance between the tip of the barb and the extension bar 9 after retraction is greater than the distance between the connecting end of the torsion spring 13 and the extension bar 9, when rising, the tip of the barb will be inserted into the surface of the asphalt core under the action of the restoring force of the torsion spring 13, and the three barbs will jointly grab the asphalt core. As the lifting rod rises, the asphalt core is taken up.

[0028] Example 2

[0029] In this embodiment, the connecting rod 3 is composed of two pieces, and the two connecting rods are symmetrically arranged on both sides of the lifting rod 4. The nut 5 is higher than the support 8 by a set distance. A passive pulley is installed on the outside of the raised part of the nut, and an auxiliary seat is installed on the outer side of the support 8. The driving pulley 7 is rotatably installed on the auxiliary seat, and the driving pulley 7 is connected to the passive pulley through a synchronous belt 6. A driving rod 10 is installed above the driving pulley 7. By rotating the driving rod 10, the driving pulley 7 is driven to rotate, and then the passive pulley is driven to rotate through the transmission action of the synchronous belt 6, and then the nut 5 is driven to rotate.

[0030] Example 3

[0031] In this embodiment, if Figure 4 As shown, the outer wall of the support 8 is provided with three hinged seats, each of which is rotatably mounted with a support leg 11. The hinged seats and the support legs are connected by screws 14 and fastening nuts 15. By loosening the fastening nuts 15, the angle between the support leg 11 and the support 8 can be adjusted, thereby changing the vertical height and horizontal support span of the entire support frame. After the height and support span are adjusted, tighten the fastening nuts 15 and screws 14 to fix the position of the support leg 11 and the support 8.

[0032] Example 4

[0033] In this embodiment, a worm wheel is installed on the outside of the nut 5, a worm is installed on the outer side of the support 8, and a driving rod is installed on the end of the worm. The worm is driven to rotate by the driving rod, and the nut 5 is driven to rotate through the transmission action of the worm and the turbine.

[0034] Example 5

[0035] In this embodiment, each extension strip 9 is provided with two barbs, one upper and one lower, which are distributed vertically along the extension strip 9 .

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A device for coring asphalt pavement, characterized in that: The utility model comprises a support, wherein the support is connected with a lifting rod, and at least three barbs are arranged at the lower end of the lifting rod. The barbs are connected with the lifting rod through a torsion spring, and the tips of the barbs are arranged tilted from outside to inside along the lifting rod.

2. The device for convenient coring of asphalt pavement according to claim 1, characterized in that: An extension bar is provided between the barb and the lifting rod, each barb is connected to the extension bar through a torsion spring, and the upper end of the extension bar is connected to the lifting rod.

3. The device for convenient coring of asphalt pavement according to claim 2, characterized in that: The distance between the tip of the barb and the extension strip is greater than the distance between the starting end of the barb and the extension strip.

4. The device for convenient coring of asphalt pavement according to claim 2, characterized in that: The extension strips are in the shape of thin sheets, and the three extension strips are evenly arranged along the circumference of the lifting rod.

5. The device for convenient coring of asphalt pavement according to claim 1, characterized in that: A nut is rotatably connected inside the support, and the lifting rod is threadably matched with the nut. A guide rod extending downward is provided at the upper end of the support, and the guide rod is slidably connected to the lifting rod.

6. The device for convenient coring of asphalt pavement according to claim 5, characterized in that: The lifting rod is coaxially connected with the nut.

7. The device for convenient coring of asphalt pavement according to claim 5, characterized in that: The guide rods are at least two in number, and the two guide rods are symmetrically distributed about the center of the lifting rod.

8. The device for convenient coring of asphalt pavement according to claim 5, characterized in that: The nut is connected to a driving rod for driving the nut to rotate through a transmission mechanism.

9. The device for convenient coring of asphalt pavement according to claim 8, characterized in that: The transmission mechanism is a belt transmission mechanism or a worm gear transmission mechanism.

10. The device for convenient coring of asphalt pavement according to claim 1, characterized in that: The lower end of the support is rotatably connected with at least three positionable legs.

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