Concrete pavement drilling and coring device

Abstract

The utility model relates to the technical field of concrete drilling devices, in particular to a concrete pavement drilling and coring device which is convenient for taking out a core body, improving the coring efficiency and preventing the core body from being damaged and comprises a driving rod, a plurality of connecting pieces are arranged at one end of the driving rod, a clamping piece is arranged at one end of each connecting piece, and the clamping pieces are connected with the driving rod. The clamping pieces are used for making contact with the outer wall of a core body, the connecting pieces gradually expand from one end of the driving rod to one ends of the clamping pieces, a sleeve is installed on the driving rod in a sliding mode, and when the sleeve moves towards the clamping pieces along the driving rod, the sleeve enables the connecting pieces to contract and drives the clamping pieces to be tightened at the same time. A clamping piece is arranged on the sleeve to stably clamp the core body, a jackscrew is installed on the sleeve through threads, the screwing-in end of the jackscrew can abut against the outer wall of the driving rod, the cross section of the clamping piece is in an arc shape, a handle is arranged on the outer wall of the sleeve, an anti-skid sleeve is arranged on the driving rod, and scales are arranged on the outer wall of the clamping piece.

Description

Technical Field

[0001] This utility model relates to the technical field of concrete drilling devices, specifically a core drilling device for concrete pavement. Background Technology

[0002] Asphalt concrete pavement has advantages such as smooth, seamless surface, low vehicle vibration, fast traffic opening, and easy maintenance. It is widely used in the construction of highways of different grades. In the construction of asphalt pavement, compaction degree is an important indicator for evaluating the quality of asphalt highway pavement. Core drilling is an important method for testing pavement compaction degree and is used to evaluate the compaction degree of asphalt surface layer construction. After drilling, the equipment is pulled out, and a second operation is required to remove the core that has been separated inside.

[0003] Current core drilling equipment has significant shortcomings in the core sampling process:

[0004] After drilling and removing the equipment, the separated core needs to be retrieved separately. Workers rely on clamp-like tools for this purpose. These tools typically have a small gripping surface, limiting the contact area with the core. When dealing with heavy cores, this small contact area makes it difficult to provide sufficient and even friction, causing the core to easily detach. Because the clamps are prone to failure, the core retrieval process often requires multiple attempts, reducing efficiency. Furthermore, the repeated dropping of the core increases the risk of breakage due to impact. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a core drilling device for concrete pavements, which facilitates core extraction, improves core extraction efficiency, and avoids core damage.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a core drilling device for concrete pavement, characterized in that it comprises:

[0009] A drive rod, one end of which is provided with several connecting parts;

[0010] Each of the connectors is provided with a clamping piece at one end, which is used to contact the outer wall of the core;

[0011] The connector gradually expands from one end of the drive rod toward one end of the clamping piece;

[0012] A sleeve is slidably mounted on the drive rod. When the sleeve moves along the drive rod toward the clamping plate, the sleeve causes several connecting parts to retract, and at the same time drives the clamping plate to tighten, so as to stably clamp the core.

[0013] Furthermore, a set screw is threaded onto the sleeve, and the screwed-in end of the set screw can abut against the outer wall of the drive rod.

[0014] Furthermore, the cross-section of the clamping piece is set in an arc shape.

[0015] Furthermore, a handle is provided on the outer wall of the sleeve.

[0016] Furthermore, the drive rod is provided with an anti-slip sleeve.

[0017] Furthermore, the outer wall of the clamping piece is provided with a scale.

[0018] (III) Beneficial Effects

[0019] Compared with the prior art, the present invention provides a core drilling device for concrete pavement, which has the following advantages:

[0020] This concrete pavement core drilling device uses multiple connectors at one end of a drive rod. Each connector has a clamping plate at its end, which contacts the outer wall of the core. When a sleeve moves along the drive rod towards the clamping plate, the sleeve causes the connectors to contract, tightening the clamping plate and holding the core in place. Compared to traditional clamping methods, this increases the contact area with the core, improves the stability of the core clamping, ensures the core does not easily fall off during the core drilling process, increases core drilling efficiency, and effectively prevents core damage. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a front view structural diagram of the present utility model;

[0023] Figure 3 This is a side view of the structure of this utility model;

[0024] Figure 4 This is a cross-sectional structural diagram of the present invention.

[0025] In the diagram: 1. Drive rod; 2. Connector; 3. Clamping plate; 4. Sleeve; 5. Handle; 6. Set screw; 7. Anti-slip sleeve. Detailed Implementation

[0026] 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.

[0027] Please see Figure 1-4 The present invention relates to a concrete pavement core drilling device, characterized in that it includes a drive rod 1, one end of which is provided with several connecting members 2, the connecting members 2 having a certain elasticity, and one end of each connecting member 2 being provided with a clamping plate 3, the clamping plate 3 being used to contact the outer wall of the core, the cross-section of the clamping plate 3 being arc-shaped, the clamping plate 3 being able to be inserted into the gap around the core during drilling, the connecting members 2 gradually expanding from one end of the drive rod 1 to one end of the clamping plate 3, that is, the diameter formed by the several drive rods 1 gradually increases from one end of the drive rod 1 to one end of the clamping plate 3, a sleeve 4 being slidably installed on the drive rod 1, the inner diameter of the sleeve 4 being smaller than the diameter formed by the several drive rods 1 when the sleeve 4 moves along the drive rod 1 towards the clamping plate 3, the sleeve 4 causing the several connecting members 2 to contract, and at the same time driving the clamping plate 3 to tighten, so as to stably clamp the core, and then pulling the drive rod 1 upward to remove the core from the drill hole.

[0028] In order to position the sleeve 4, a set screw 6 is installed on the sleeve 4 by means of threads. A threaded hole is opened on the sleeve 4 that penetrates the wall of the sleeve 4. The set screw 6 is threadedly connected to the threaded hole. Therefore, when the set screw 6 is rotated, its screw-in end can abut against the outer wall of the drive rod 1.

[0029] A handle 5 is provided on the outer wall of the sleeve 4 to facilitate the user to move the sleeve, and an anti-slip sleeve 7 is provided on the drive rod 1 to prevent the user from slipping when holding the drive rod 1.

[0030] The outer wall of the clamping piece 3 is marked with graduations so that the user can clearly see the insertion depth of the clamping piece 3.

[0031] In summary, when using this concrete pavement core drilling device, first, a drilling device is used to drill a hole. After drilling is completed, the drilling device is removed, and the core remains in the hole due to gravity. Then, the clamping plate 3 is inserted into the gap, and then the sleeve 4 is moved downward to make the connecting piece 2 close together, so that the clamping plate 3 clamps the core. Pulling the drive rod 1 upward causes the clamping plate 3 to remove the core from the hole.

[0032] 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 core drilling device for concrete pavement, characterized in that, include: A drive rod (1), one end of which is provided with a plurality of connectors (2); Each of the connectors (2) is provided with a clamping piece (3) at one end, the clamping piece (3) being used to contact the outer wall of the core; The connector (2) gradually expands from one end of the drive rod (1) toward one end of the clamping piece (3); A sleeve (4) is slidably mounted on the drive rod (1). When the sleeve (4) moves along the drive rod (1) toward the clamping plate (3), the sleeve (4) causes several connecting pieces (2) to retract, and at the same time drives the clamping plate (3) to tighten, so as to stably clamp the core.

2. The concrete pavement core drilling device according to claim 1, characterized in that: The sleeve (4) is threaded with a set screw (6), and the screw-in end of the set screw (6) can abut against the outer wall of the drive rod (1).

3. The concrete pavement core drilling device according to claim 1, characterized in that: The cross-section of the clamping piece (3) is arc-shaped.

4. The concrete pavement core drilling device according to any one of claims 1-3, characterized in that: A handle (5) is provided on the outer wall of the sleeve (4).

5. The concrete pavement core drilling device according to claim 4, characterized in that: The drive rod (1) is provided with an anti-slip sleeve (7).

6. The concrete pavement core drilling device according to claim 3, characterized in that: The outer wall of the clamping piece (3) is provided with a scale.

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