CN211452928U - Drill core barrel convenient for coring - Google Patents

Abstract

The utility model discloses a bore a core section of thick bamboo convenient to get core belongs to road surface construction equipment technical field. The connecting rod is connected with a core drilling machine to drill and take core samples, the bolt rod penetrates through the sliding groove and the bolt hole, the core pressing disc is fixed on the upper portion in the barrel after threads are screwed with the nut, and the core samples can be easily pushed out of the barrel by driving the core pressing disc through the sliding bolt rod during sampling. The device simple structure, reasonable in design have solved common core drilling machine card core problem, have guaranteed the integrality of core appearance, and then improve the accuracy of follow-up mechanical properties experimental data. When the drill bit is invalid, the press core disc, the bolt rod and the nut component can be detached for reuse, and materials and cost are saved.

Description

Drill core barrel convenient for coring

Technical Field

The utility model belongs to the technical field of the road surface construction equipment, concretely relates to bore a core section of thick bamboo convenient to get core.

Background

In the process of newly building asphalt pavement and reconstructing and expanding asphalt pavement, mechanical property experiments of core samples drilled from asphalt pavement structures are very common and important, so that the core drilling machine is widely applied. However, in the actual coring process, it is often difficult to take out a complete core sample, and the main reason is that the core sample rises along with the drill core barrel in the process of the drill core barrel rising, but is often stuck in the drill core barrel and difficult to take out, and the core sample is forced to fall off by hammering the outer wall of the drill core barrel on the spot, and such striking mode cannot ensure that the core sample falls off and can smash or damage the core sample, thereby affecting the accuracy of the mechanical property experiment result in the later stage of the core sample.

Disclosure of Invention

In order to solve the problem, the utility model aims to provide a bore a core section of thick bamboo convenient to get core, structural design is reasonable, and its preparation low cost, easy operation can effectively solve the card core problem, guarantees the integrality of core appearance, and then improves the accuracy of follow-up mechanical properties experimental data.

The utility model discloses a realize through following technical scheme:

the utility model discloses a core drilling barrel convenient for coring, which comprises a barrel body, a drill bit, a core pressing disc, a bolt rod and a nut;

the barrel is a hollow cylinder with a closed upper end and an open lower end, a plurality of pairs of sliding chutes parallel to the axis of the barrel are arranged on the side surface of the barrel, the upper end of the barrel is connected with a connecting rod, and the lower end of the barrel is connected with a drill bit; the diameter of the core pressing disc is smaller than the inner diameter of the cylinder body, a plurality of groups of pin holes are formed in the upper end face of the core pressing disc, and the centers of the pin holes of each group are located on the same straight line; threads matched with the nuts are arranged at the two ends of the bolt rod;

when the plug-in type core pressing device is used, the connecting rod is connected with the core drilling machine, when the plug pin rod penetrates through the sliding groove and the plug pin hole, the screw thread is screwed with the nut, and the core pressing disc is fixed on the upper portion in the cylinder body.

Preferably, the slide groove is 2 pairs, the bolt rod is 2, the bolt hole is 2 groups, and each group comprises 2 bolt holes.

Further preferably, the 2 pairs of chutes are equidistant from the cylinder axis.

Further preferably, the connecting lines of the 2 groups of pin holes are parallel and have equal distance from the center of the core pressing disc, and the distance from the 2 pin holes in each group to the center of the core pressing disc is equal.

Preferably, the nut is a wing nut.

Preferably, the nut is a self-locking nut.

Preferably, the upper end surface of the core pressing disc is provided with an elastic anti-slip layer.

Preferably, the lower end face of the core pressing disc is provided with a plurality of pointed conical pressing heads.

Preferably, a compensation block is fixed on the outer wall of the cylinder body in the upper end area of the sliding groove, one end of the compensation block is a curved surface attached to the outer wall of the cylinder body, and the other end of the compensation block is a plane.

Compared with the prior art, the utility model discloses following profitable technological effect has:

the utility model discloses a bore a core section of thick bamboo convenient to get core, including barrel, drill bit, pressure core dish, bolt pole and nut, the connecting rod is connected with the core drill and is bored the coring sample, and the bolt pole passes spout and bolt hole, and the back is screwed with the nut to the screw thread, presses the core dish to fix on the upper portion in the barrel, during the sample, drives the pressure core dish through the slip bolt pole, just can release the barrel with the coring sample easily. The device simple structure, reasonable in design have solved common core drilling machine card core problem, have guaranteed the integrality of core appearance, and then improve the accuracy of follow-up mechanical properties experimental data. When the drill bit is invalid, the press core disc, the bolt rod and the nut component can be detached for reuse, and materials and cost are saved.

Further, set up 2 spouts, supporting bolt hole group number and bolt pole quantity also are 2, are convenient for the application of force. The number of the sliding grooves is too small, and the stress of the core pressing disc is not uniform; the excessive number of the chutes correspondingly reduces the strength of the cylinder body.

Furthermore, the distance between the 2 pairs of sliding grooves and the axis of the cylinder body is equal, so that the stress uniformity of the core pressing disc can be further improved, and the core sample can be conveniently pushed out.

Furthermore, 4 bolt holes in 2 groups are uniformly distributed, so that the stress uniformity of the core pressing disc can be further improved, and the force application is facilitated.

Furthermore, the nut is a butterfly nut, so that the manual operation is facilitated without tools, and the convenience degree and the operation efficiency are improved.

Furthermore, the nut adopts the auto-lock nut, can prevent that the too big nut that causes of vibration is not hard up when a core section of thick bamboo sample of brill.

Further, because the bolt pole of cylinder is line contact with the pressure core dish essence, the application of force of being not convenient for is crossed the stress surface (line) undersize, sets up the elasticity skid resistant course at pressure core dish up end, can increase the lifting surface area, prevents to skid simultaneously, the application of force of being convenient for.

Further, the terminal surface sets up a plurality of sharp toper pressure heads under the pressure core dish, can increase the effect pressure, prevents simultaneously that the core appearance of partial soft material such as pitch from gluing with the pressure core dish and be not convenient for the application of force.

Further, the compensation piece can make the nut can laminate the compensation piece and screw, improves firm degree, avoids boring the core in-process nut not hard up.

Drawings

Fig. 1 is a schematic view of the overall structure of a core barrel for facilitating coring of the present invention;

FIG. 2 is a schematic view of the assembly structure of the core pressing plate, the bolt rod and the nut of the present invention;

fig. 3 is a schematic view of the structure of the cylinder and the compensation block of the present invention.

In the figure: 1 is the connecting rod, 2 is the barrel, 3 is the spout, 4 is the drill bit, 5 is the pressure core dish, 6 is the screw thread, 7 is the bolt pole, 8 is the bolt hole, 9 is the nut, 10 is the compensation piece.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and embodiments:

as shown in fig. 1, the core drilling barrel convenient for coring of the utility model comprises a barrel body 2, a drill bit 4, a core pressing disc 5, a bolt rod 7 and a nut 9;

the cylinder body 2 is a hollow cylinder with a closed upper end and an open lower end, a plurality of pairs of sliding chutes 3 parallel to the axis of the cylinder body 2 are arranged on the side surface, the upper end of the cylinder body 2 is connected with a connecting rod 1, and the lower end of the cylinder body 2 is connected with a drill bit 4; the diameter of the core pressing disc 5 is smaller than the inner diameter of the cylinder body 2, a plurality of groups of bolt holes 8 are formed in the upper end face of the core pressing disc 5, and the centers of the bolt holes 8 are located on the same straight line; the bolt rod 7 is provided with threads 6 at both ends thereof, which are adapted to nuts 9, and preferably, the nuts 9 can be butterfly nuts or self-locking nuts. Preferably, an elastic anti-slip layer, such as a rubber layer, a nylon layer and the like, can be arranged on the upper end face of the core pressing disc 5; the lower end surface of the core pressing disc 5 is provided with a plurality of sharp cone-shaped pressing heads.

Preferably, the number of the sliding grooves 3 is 2, the number of the matched bolt rods 7 is 2, the number of the bolt holes 8 is 2, and each group comprises 2 bolt holes 8; the distance between the 2 pairs of chutes 3 and the axis of the cylinder 2 is equal; the connecting lines of the 2 groups of pin holes 8 are parallel and have equal distance from the center of the core pressing disc 5, and the distance from the 2 pin holes 8 in each group to the center of the core pressing disc 5 is equal.

If nut 9 directly contacts with barrel 2, when nut 9 was screwed with the outer wall curved surface contact point undersize of barrel 2, can cause the fastening insecure, can fix compensation piece 10 on the regional barrel 2 outer wall in spout 3 upper end, compensation piece 10 one end is the curved surface of laminating with barrel 2 outer wall, and the other end is the plane of contacting with nut 9.

The utility model discloses a bore a core section of thick bamboo convenient to get core at the during operation:

when a core sample is to be drilled, the surface of the core pressing disc 5 with the bolt holes 8 is used as the upper end surface and is placed into the cylinder body 2, and the bolt rod 7 passes through the front (or back) sliding groove opening 3, the first bolt hole, the second bolt hole and the back (or front) sliding groove opening in sequence. Then nuts 9 are screwed on two ends of the bolt rod 7 in sequence, and at the moment, the core pressing disc 5 is fixed at the uppermost end of the sliding groove opening 3 through the bolt rod 7 and the nuts 9.

After the core drilling is finished, the nut 9 is unscrewed to enable the core pressing disc 5 to fall and be close to the top of the core sample, and meanwhile, the two ends of the bolt rod 7 are pressed downwards to enable the core sample to fall off.

It should be noted that the above description is only one of the embodiments of the present invention, and all equivalent changes made by the device described in the present invention are included in the protection scope of the present invention. Persons skilled in the art can substitute the described specific examples in a similar manner, and all such modifications are within the scope of the invention as defined by the claims.

Claims (9)

1. A core drilling barrel convenient for coring is characterized by comprising a barrel body (2), a drill bit (4), a core pressing disc (5), a bolt rod (7) and a nut (9);

the cylinder (2) is a hollow cylinder with a closed upper end and an open lower end, a plurality of pairs of sliding chutes (3) parallel to the axis of the cylinder (2) are arranged on the side surface, the upper end of the cylinder (2) is connected with a connecting rod (1), and the lower end of the cylinder (2) is connected with a drill bit (4); the diameter of the core pressing disc (5) is smaller than the inner diameter of the cylinder body (2), a plurality of groups of bolt holes (8) are formed in the upper end face of the core pressing disc (5), and the centers of the bolt holes (8) are located on the same straight line; threads (6) matched with the nuts (9) are arranged at the two ends of the bolt rod (7);

when the connecting rod is used, the connecting rod (1) is connected with a core drilling machine, when the bolt rod (7) penetrates through the sliding groove (3) and the bolt hole (8), and after the thread (6) and the nut (9) are screwed, the core pressing disc (5) is fixed on the upper portion in the cylinder body (2).

2. The core barrel facilitating coring as set forth in claim 1, wherein there are 2 pairs of sliding grooves (3), 2 latch rods (7), and 2 sets of latch holes (8), each set containing 2 latch holes (8).

3. The core barrel facilitating coring according to claim 2, wherein the 2 pairs of chutes (3) are equidistant from the axis of the barrel (2).

4. The core barrel facilitating coring as set forth in claim 2, wherein the connecting lines of the 2 groups of pin holes (8) are parallel and are equidistant from the center of the core pressing disc (5), and the 2 pin holes (8) in each group are equidistant from the center of the core pressing disc (5).

5. Core barrel for facilitating coring according to claim 1, wherein the nut (9) is a wing nut.

6. Core barrel for facilitating coring according to claim 1, wherein the nut (9) is a self-locking nut.

7. The core barrel for facilitating coring according to claim 1, wherein the upper end surface of the core pressing disc (5) is provided with an elastic anti-slip layer.

8. The core barrel facilitating coring as set forth in claim 1, wherein the lower end surface of the core pressing disc (5) is provided with a plurality of pointed conical pressing heads.

9. The core barrel convenient for coring as set forth in claim 1, wherein the outer wall of the barrel body (2) in the upper end region of the chute (3) is fixed with a compensating block (10), one end of the compensating block (10) is a curved surface attached to the outer wall of the barrel body (2), and the other end is a plane.

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