CN219081496U

CN219081496U - Rock drilling rod

Info

Publication number: CN219081496U
Application number: CN202223500441.7U
Authority: CN
Inventors: 张树彬; 陶宗恒; 卓震东; 魏旭龙; 潘雪成; 王振兴; 陈东; 唐伟; 荣建国; 戴浪海
Original assignee: Cccc Guanghang Dredging Co ltd; CCCC Guangzhou Dredging Co Ltd.
Current assignee: Cccc Guanghang Dredging Co ltd; CCCC Guangzhou Dredging Co Ltd.
Priority date: 2022-12-23
Filing date: 2022-12-23
Publication date: 2023-05-26
Anticipated expiration: 2032-12-23

Abstract

The utility model relates to a rock drilling rod, which comprises a rock drilling rod body and a hammer sleeve connected with the tail end of the rock drilling rod body, wherein a tool bit for drilling rock is sleeved on the hammer sleeve, and a mounting groove matched with the tail end of the rock drilling rod body is concavely formed in one side of the hammer sleeve, which is away from the tool bit. The mounting groove of hammer bush and the adaptation of hammer stick body tail end, in the mounting groove of hammer bush was inserted to the hammer stick body tail end, increase the area of contact of hammer stick body and hammer bush reduced the impact to the hammer stick body when being under construction, improved the efficiency of construction, and reduced the welding area of hammer stick body and hammer bush, reduced the influence to the organizational quality, prolonged the life of rock drilling stick.

Description

Rock drilling rod

Technical Field

The utility model relates to the technical field of rock reef removal, in particular to a rock drilling rod.

Background

In recent years, rock strength is generally higher and higher in rock reef clearing engineering, the whole volume of the rock reef is larger and larger, an axe type rock drilling rod is generally adopted as a main construction tool in a mechanical rock breaking construction process in the rock reef clearing engineering with large volume and high strength, and the wear resistance and impact resistance of a rock drilling rod tool bit are limited to a great extent at present. The traditional axe type rock drilling rod, the cutter head is connected with the rock drilling rod body through the mode of plane welding and side repair welding, the welding area is too large, the tissue performance of the cutter head is changed, the strength, the hardness and the impact toughness of the cutter head are weakened, the brittleness is enhanced, the cutter head is easy to damage, the front side and the side of the cutter head of the rock drilling rod are easy to be impacted in construction, the deformation of the rock drilling rod body is easy to damage, the construction efficiency is reduced slowly, the maintenance cost is increased, and the service life of the rock drilling rod is shortened.

Disclosure of Invention

The utility model aims to provide a rock drilling rod, which can reduce impact on a rock drilling rod body during construction, improve construction efficiency and prolong service life.

In order to achieve the aim of the utility model, the technical scheme adopted is as follows:

the utility model provides a rock drilling rod, includes rock drilling rod body, and with rock drilling rod body tail end connection's hammer cover, the hammer cover is equipped with the tool bit that is used for rock drilling, the hammer cover is equipped with the mounting groove with rock drilling rod body tail end adaptation in concave one side of tool bit dorsad.

The mounting groove of hammer bush and the adaptation of hammer stick body tail end, in the mounting groove of hammer bush was inserted to the hammer stick body tail end, increase the area of contact of hammer stick body and hammer bush reduced the impact to the hammer stick body when being under construction, improved the efficiency of construction, and reduced the welding area of hammer stick body and hammer bush, reduced the influence to the organizational quality, prolonged the life of rock drilling stick.

The following technical scheme is further described:

further, the cross section of the groove is semicircular, and the tail end of the rock drilling rod body is semicircular. The mounting groove is mutually matched with the tail end of the rock drilling rod body, so that the contact surface of the rock drilling rod body and the hammer sleeve is larger, the stress incident wave is more uniform, the stress conductivity is better, the damage caused by stress concentration is effectively avoided, and the rock drilling effect is greatly improved.

Further, the mounting groove penetrates through the hammer sleeve along the length direction of the cutter head.

Further, the mounting groove extends out of the outer side of the rock drilling rod body in the length direction. The side face of the rock drilling rod body is prevented from being worn in the rock drilling process, impact on the rock drilling rod body during construction is further reduced, and the service life of the rock drilling rod is prolonged.

Further, the outer periphery of the cutter head comprises a first side surface and a second side surface which are oppositely arranged, and a first inclined surface and a second inclined surface which are connected between the first side surface and the second side surface and form a cutter point. The impact stress contact surface of the cutter head is increased, so that the damage to the cutter head caused by stress concentration is effectively avoided, and the service life is prolonged.

Further, the rock drilling rod further comprises a fastening piece, the hammer sleeve is provided with a first connecting hole matched with the fastening piece, and the rock drilling rod body is provided with a second connecting hole matched with the fastening piece. Through the cooperation of first connecting hole, second connecting hole and fastener, consolidate the connection of drilling rod body and hammer sleeve, prevent that the tool bit from droing at the rock drilling in-process, cause pollution and resource loss.

Further, the first connecting holes are formed in two sides of the hammer sleeve, and the second connecting holes are formed in two sides of the rock drilling rod body. The connection between the rock drilling rod body and the hammer sleeve is firmer, and the cutter head is further prevented from falling off in the rock drilling process.

Further, the outer wall of the hammer case is provided with a sealing plate which covers the top of the fastener. After the fastener is installed, the fastener is sealed in the first connecting hole and the second connecting hole through the welding plate, so that the fastener is prevented from loosening or falling off, and the connection between the rock drilling rod body and the hammer sleeve is firmer.

Further, the first connecting hole and the second connecting hole are threaded holes, and the fastening piece is a bolt. And the installation and maintenance are convenient.

Further, the hammer sleeve is made of a Weartuf450 material. The material has high hardness and strength, good wear resistance and impact toughness and strong weldability, so that the cutter head has stronger impact and destructive properties to rocks, the actual rock drilling effect is better, the rock drilling effect is greatly improved, and the engineering progress is accelerated.

Compared with the prior art, the utility model has the following beneficial effects:

the mounting groove of the hammer sleeve is matched with the tail end of the rock drilling rod body, the tail end of the rock drilling rod body is inserted into the mounting groove of the hammer sleeve, the contact area of the rock drilling rod body and the hammer sleeve is increased, the impact on the rock drilling rod body during construction is reduced, the construction efficiency is improved, the welding area of the rock drilling rod body and the hammer sleeve is reduced, the influence on the organization performance is reduced, and the service life of the rock drilling rod is prolonged.

Drawings

Fig. 1 is a first schematic structural view of a rock drilling rod according to an embodiment of the present utility model;

fig. 2 is a second construction schematic of a rock drilling rod according to an embodiment of the utility model.

Reference numerals illustrate:

10. the drilling rod comprises a drilling rod body 110, a second connecting hole 20, a hammer sleeve 210, a tool bit 211, a first side surface 212, a first inclined surface 213, a second inclined surface 214, a second side surface 215, a tool nose 220, a mounting groove 230, a first connecting hole 30, a fastener 40 and a sealing welding plate.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the attached drawings:

as shown in fig. 1 and 2, a rock drilling rod comprises a rock drilling rod body 10 and a hammer sleeve 20 connected with the tail end of the rock drilling rod body 10, wherein the hammer sleeve 20 is provided with a cutter head 210 for drilling rock, and one side of the hammer sleeve 20, which is away from the cutter head 210, is concavely provided with a mounting groove 220 matched with the tail end of the rock drilling rod body 10.

The mounting groove 220 of the hammer sleeve 20 is matched with the tail end of the rock drilling rod body 10, the tail end of the rock drilling rod body 10 is inserted into the mounting groove 220 of the hammer sleeve 20, the contact area between the rock drilling rod body 10 and the hammer sleeve 20 is increased, the impact on the rock drilling rod body 10 during construction is reduced, the construction efficiency is improved, the welding area between the rock drilling rod body 10 and the hammer sleeve 20 is reduced, the influence on the organization performance is reduced, and the service life of the rock drilling rod is prolonged.

In this embodiment, the hammer sleeve 20 is made of the material of the weatuf 450, and the material has high hardness and strength, good wear resistance and impact toughness, strong weldability, good crack resistance in the use process, longer service life, easy replacement and low cost, and reduces the abrasion and damage degree of the hammer sleeve 20 during rock drilling. The hammer sleeve 20 can be made of other materials according to actual needs.

As shown in fig. 1 and 2, the cross section of the mounting groove 220 is semicircular, the tail end of the rock drilling rod body 10 is semicircular, the mounting groove 220 is matched with the tail end of the rock drilling rod body 10, so that the contact surface between the rock drilling rod body 10 and the hammer sleeve 20 is larger, the stress incident wave is more uniform, the stress conductivity is better, the damage caused by stress concentration is effectively avoided, and the rock drilling effect is greatly improved. The mounting groove 220 and the tail end of the rock drilling rod body 10 may also be provided with other shapes according to actual requirements.

As shown in fig. 2, the mounting groove 220 is formed along the length direction of the cutter head 210 and penetrates through the hammer sleeve 20, and the mounting groove 220 extends out of the outer side of the rock drilling rod body 10 along the length direction, so that the side surface of the rock drilling rod body 10 is prevented from being worn during the rock drilling process, the impact on the rock drilling rod body 10 during construction is further reduced, and the service life of the rock drilling rod is prolonged.

In this embodiment, as shown in fig. 2, the outer periphery of the cutter head 210 includes a first side 211, a first inclined plane, a second inclined plane 212, a second inclined plane 213 and a second side 214 which are sequentially connected, the first side 211 and the second side 214 are relatively parallel, the first inclined plane 212 and the second inclined plane 213 cooperate to form a cutter tip 215, the apex angle of the cutter tip 213 is 110 °, the impact stress contact surface of the cutter head 210 is increased, damage to the cutter head 210 caused by stress concentration is effectively avoided, and the service life is prolonged.

As shown in fig. 1, the drilling rod further includes a fastening member 30, the hammer case 20 is provided with a first connection hole 230 engaged with the fastening member 30, the drilling rod body 10 is provided with a second connection hole 110 engaged with the fastening member 30, and the connection between the drilling rod body 10 and the hammer case 20 is reinforced by engaging the first connection hole 230, the second connection hole 110 and the fastening member 30, so that the tool bit 210 is prevented from falling off during the drilling process, thereby causing pollution and resource loss.

In this embodiment, the first connecting holes 230 are formed on both sides of the hammer case 20, and the second connecting holes 110 are formed on both sides of the rock drilling rod body 10, so that the connection between the rock drilling rod body 10 and the hammer case 20 is more stable, and the tool bit 210 prevents falling off in the rock drilling process; and the first and

second connection holes

230 and 110 are screw holes, and the fastener 30 is a bolt, which is convenient for installation and maintenance. The first connection hole 230, the second connection hole 110 and the fastener 30 may be connected in other manners according to actual needs, and may be arranged in other numbers according to actual needs.

As shown in fig. 2, the outer wall of the hammer case 20 is provided with a seal plate 40, and the seal plate 40 covers the top of the fastener 30. After the fastener 30 is installed, the fastener 30 is sealed in the first connecting hole 230 and the second connecting hole 110 by the welding plate, so that the fastener 30 is prevented from loosening or falling off, and the connection between the rock drilling rod body 10 and the hammer sleeve 20 is more stable.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a rock drilling rod, its characterized in that includes the rock drilling rod body, and with rock drilling rod body tail end connection's hammer cover, the hammer cover is equipped with the tool bit that is used for the rock drilling, the hammer cover dorsad one side of tool bit concave be equipped with the mounting groove of rock drilling rod body tail end adaptation.

2. A rock drilling rod according to claim 1, wherein the cross section of the mounting groove is semi-circular, and the tail end of the rock drilling rod body is semi-circular.

3. A rock drilling rod according to claim 1, wherein the mounting slot is provided through the hammer sleeve in the length direction of the bit.

4. A rock drilling rod according to claim 3, wherein the mounting groove extends lengthwise out of the outer side of the rock drilling rod body.

5. A rock drilling rod according to any one of claims 1 to 4, wherein the periphery of the cutting head comprises oppositely arranged first and second sides, and first and second inclined surfaces connected between the first and second sides and forming a nose.

6. A rock drilling rod according to claim 5, further comprising a fastener, the hammer sleeve being provided with a first connection hole for cooperation with the fastener, the rock drilling rod body being provided with a second connection hole for cooperation with the fastener.

7. A rock drilling rod according to claim 6, wherein the first connection holes are provided on both sides of the hammer sleeve and the second connection holes are provided on both sides of the rock drilling rod body.

8. A rock drilling rod according to claim 6, wherein the outer wall of the hammer sleeve is provided with a sealing plate, which covers the top of the fastener.

9. A rock drilling rod according to any one of claims 6 to 8, wherein the first and second connection holes are threaded holes and the fastener is a bolt.

10. A rock drilling rod according to any one of claims 1 to 4, wherein the hammer sleeve is of a WearTuf450 material.