CN213175516U

CN213175516U - Electric coal drill chuck

Info

Publication number: CN213175516U
Application number: CN202021810999.3U
Authority: CN
Inventors: 张拥军; 范玉华; 孙建伟
Original assignee: Borek Mining Equipment Co ltd
Current assignee: Borek Mining Equipment Co ltd
Priority date: 2020-08-26
Filing date: 2020-08-26
Publication date: 2021-05-11
Anticipated expiration: 2030-08-26

Abstract

The utility model discloses an electric coal drill chuck, which comprises a base, a second positioning column, a fastening nail groove, a fastening nail positioning groove, a through hole, a cover plate groove, a screw hole, a cover plate, a spring, a screw, a fixing screw and an adjusting screw hole; the base is arranged to be a cylindrical table, and the second positioning column is arranged to be fan-shaped; the number of the second positioning columns is more than or equal to 2, and the second positioning columns are respectively and symmetrically connected and arranged on the side wall of the base; the fastening nail groove is round and is arranged on the inner side of the second positioning column; the through hole is arranged in the center of the fastening nail groove; the cover plate groove is arranged on the outer side of the second positioning column and is circular; the cover plate is arranged into a circular shape matched with the cover plate groove and embedded in the cover plate groove; a fixing screw is slidably connected in the fastening screw groove and is arranged in a T shape; the processing is easy in the processing process, the connection is also stable, and the assembly is convenient and stable.

Description

Electric coal drill chuck

Technical Field

The utility model relates to an improve mining, the ore dressing technical field of mineral resources recycle rate, concretely relates to electric coal drill chuck.

Background

The electric coal is coal used for generating electricity. The coal is ground into powder and combusted in a boiler of a thermal power plant, water in the boiler absorbs heat to become steam with certain parameters to push a steam turbine to rotate, and the steam turbine drives a generator to generate electricity so as to be called as electric coal. The electric coal drill bit is used for drilling electric coal during coal mining, and has the advantages of high drilling speed, wide drilling range, time saving, labor saving, simple connection mode and durability. However, when the coal drill bit is connected with the drill rod for use, the drill bit provides a cutting lateral force and a drilling force, when the coal drill bit is withdrawn, the coal drill bit can rotate in the direction in order to facilitate withdrawal, sometimes the coal drill bit can be damaged and needs to be replaced, the existing drill bit is directly connected with the drill rod in an inserting mode, the drill rod is not easy to machine in the machining process, and the connection is not stable.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric coal drill chuck solves the drilling rod and is difficult to processing at the in-process of processing, connects the unstable problem moreover.

In order to solve the technical problem, the utility model adopts the following technical scheme:

a clamping seat of an electric coal drill is connected with a drill bit and a drill rod, wherein the drill bit comprises a drill bit body, a drill bit tray, a positioning disc, a connecting column, a positioning plate, an arc-shaped connecting part, a clamping groove, an arc-shaped bend, a first cutting edge, a second cutting edge, an inclined connecting part and a stress part; the drill rod comprises a counter bore, a drill rod positioning groove, a stress groove, a first positioning column and a second positioning column groove; the drill bit clamping seat comprises a base, a second positioning column, a fastening nail groove, a fastening nail positioning groove, a through hole, a cover plate groove, a screw hole, a cover plate, a spring, a screw, a fixing screw and an adjusting screw hole; the stress part is in adaptive connection with the stress groove; the positioning plate is connected with the drill rod positioning groove in a matching manner; the connecting column is connected with the countersunk head hole in a matched manner; the arc-shaped connecting part is connected with the top of the sleeve in a matching way; the clamping groove is connected with the fixing screw in a matched manner; the second positioning column groove is in adaptive connection with the second positioning column; the drill bit body is of a four-side type, a first cutting edge is arranged at the top of the drill bit body, a cutting knife inclined plane is formed from the first cutting edge to four corners of the drill bit body, and a second cutting edge is arranged at the joint of the outermost side surface; the drill bit body is symmetrically arranged into 2 drill bit bodies, the joints of the drill bit bodies are arc-shaped bends, the drill bit trays are arranged at the bottom of the drill bit body, the arc-shaped bends reach the drill bit trays and are arranged into inclined connecting parts, the drill bit trays are arranged into an elliptical shape, the center of the elliptical shape is arranged into a circular shape, and the intersection of the elliptical shape and the circular shape is provided with an inwards-concave radian forming cutting edge; the positioning disc is arranged below the drill bit tray and is circular; the connecting column is fixedly connected and arranged below the positioning disc and is a cylinder; a conical arc-shaped connecting part is arranged between the positioning disc and the connecting column, a drill positioning groove is arranged on the arc-shaped connecting part, positioning plates with the same length as the connecting column are arranged between the bottom of the arc-shaped connecting part and the connecting column, the positioning plates are fan-shaped, and the number of the drill positioning grooves and the number of the positioning plates are four; the clamping groove is arranged at the bottom of the connecting column and is in an inwards concave rotary arc shape, and the drill bit clamping seat is clamped on the clamping groove; a stress part is arranged between the positioning plate and the arc-shaped connecting part, and the stress part is set to be in a shape consistent with the positioning plate; the number of the stress parts is symmetrically 2; the upper surfaces of the arc-shaped connecting part and the stress part are provided with threads; the drill rod is inserted into the connecting column, and the drill bit clamping seat is inserted into the bottom of the drill rod; the sleeve is sleeved on the stress part of the arc-shaped connecting part and the drill rod.

Further, the drilling rod sets up to a cylinder pole with spliced pole looks adaptation, and the drilling rod includes the drilling rod constant head tank with arc connecting portion looks adaptation, includes the first reference column with drill bit constant head tank looks adaptation, includes the atress groove with atress portion looks adaptation, drilling rod constant head tank symmetry sets up to 4, first reference column symmetry sets up to 4, atress groove symmetry sets up to 2, and the bottom of first reference column is provided with second reference column groove, the drill bit cassette inlays to be established in the second reference column inslot.

Further, the sleeve is a hollow through hole sleeve, one end of the sleeve is of a structure matched with the positioning disc, and threads are arranged inside the sleeve.

Furthermore, the base is arranged to be cylindrical, and the second positioning column is arranged to be in the same shape as the first positioning column; the number of the second positioning columns is 4, and the second positioning columns are respectively connected with the side wall of the base; the fastening nail groove is round and is arranged on the inner side of the second positioning column; the through hole is arranged in the center of the fastening nail groove; the fastening nail positioning grooves are formed in the inner side wall of the through hole and are symmetrically arranged in 2 numbers; the cover plate groove is arranged on the outer side of the second positioning column and is arranged in a circular row; the screw holes are formed in the edge of the cover plate groove; the cover plate is arranged to be round and matched with the cover plate groove and embedded in the cover plate groove, the cover plate groove is fixed through screws, and the screws are arranged to be inner hexagon screws; a fixing screw is slidably connected in the fastening screw groove and is in a T shape, and a key matched with the fastening screw positioning groove is arranged on the fixing screw; the adjusting screw hole is arranged at the bottom of the base; the spring is arranged between the cover plate and the fixing screw.

Further, the sleeve is 2 times longer than the connecting column.

Further, the arc-shaped connecting part is matched with the drill bit positioning groove.

Compared with the prior art, the utility model discloses possess one of following beneficial effect:

1. the device is connected with the sleeve through the drill bit, the connecting rod, the drill bit clamping seat and the drill bit in a tight fit manner, so that the connected whole is firm, high in stability and uniform in stress, and the drill bit cannot fall off no matter how the drill bit moves; when the drill bit is replaced, the drill bit can fall off through external force after the sleeve is screwed, so that the problems that the existing connection structure of the drill bit and the drill rod is simple, leakage can occur, the drill bit is difficult to take out and replace, or the connection part is damaged due to overlarge stress are solved;

2. the device has the advantages of convenient structure installation, convenient replacement and convenient operation;

3. the drill rod of the device is easy to process in the processing process, stable in connection and convenient and stable in assembly.

Drawings

Fig. 1 is the assembly structure diagram of the present invention.

Fig. 2 is a schematic structural diagram of the drill bit of the present invention.

Fig. 3 is a top view of the drill of the present invention.

Fig. 4 is a bottom view of the drill of the present invention.

Fig. 5 is a schematic structural view of the drill rod of the present invention.

Fig. 6 is a top view of the drill rod of the present invention.

Fig. 7 is a schematic structural diagram of the drill holder of the present invention.

Fig. 8 is a schematic structural diagram of the drill holder of the present invention.

Fig. 9 is a top view of the drill holder of the present invention.

In the figure, 1-bit body, 2-bit tray, 3-positioning disc, 4-connecting column, 5-positioning plate, 6-arc connecting part, 7-clamping groove, 8-arc bend, 9-first cutting edge, 10-second cutting edge, 11-inclined connecting part, 12-stress part, 13-drill rod, 14-drill rod positioning groove, 15-stress groove, 16-first positioning column, 17-sleeve, 18-bit clamping seat, 19-second positioning column, 20-fastening nail groove, 21-fastening nail positioning groove, 22-through hole, 23-cover plate groove, 24-screw hole, 25-cover plate, 26-spring, 27-screw, 28-fixing screw, 29-adjusting screw hole, 30-bit positioning groove, 31-second positioning column groove, 32-base.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The specific embodiment is as follows:

the electric coal drill and the connecting drill rod and the drill bit clamping seat thereof comprise a drill bit, a drill rod 13, a drill bit clamping seat 18 and a sleeve 17; specifically, the drill bit includes drill bit body 1, drill bit tray 2, positioning disk 3, spliced pole 4, and is detailed, and drill bit body 1 sets up to the quadrangle in order to make things convenient for the breakage, and its top is provided with first cutting edge 9 in order to make things convenient for the precession, and first cutting edge 9 forms the cutter inclined plane in order to improve the efficiency of cutting to four angles of drill bit body 1, and the face junction in the outside is provided with second cutting edge 10 and carries out supplementary cutting.

More optimized, 1 symmetry of bit body sets up to 2 efficiency in order to improve the cutting, and its junction sets up to curved 8 of arc, drill bit tray 2 sets up in the bottom of bit body 1 with fastening bit body 1, and curved 8 of arc sets up to drill bit tray 2 and sets up to slope connecting portion 11 in order to make things convenient for the precession, drill bit tray 2 sets up to an oval type like this with the bit body 1 relatively adaptation, and the center of oval type sets up to circular, and oval and circular shape intersection is provided with the radian of indent and forms the cutting edge so that make things convenient for the auxiliary cutting.

The positioning disc 3 is arranged below the drill tray 2, the positioning disc 3 is circular, a connecting column 4 is arranged below the positioning disc 3, the connecting column 4 is cylindrical, the connecting column 4 is connected with a drill rod 13, and the positioning disc 3 is used for connecting and positioning the drill rod 13.

For more convenient connection, an optimized scheme is as follows: be provided with circular cone type arc connecting portion 6 between positioning disk 3 and spliced pole 4, be provided with drill bit constant head tank 30 on the arc connecting portion 6 to be provided with the locating plate 5 isometric with spliced pole 4 between the bottom of arc connecting portion 6 and spliced pole 4, specifically set up locating plate 5 into the fan-type. In the use process, the positioning plate 5 is in adaptive connection with the drill rod positioning groove 14, the connecting column 4 is in adaptive connection with the countersunk hole, the arc-shaped connecting part 6 is in adaptive connection with the top of the sleeve 17, and finally, tight seamless connection is carried out in the connection process, and the connection process can be properly adjusted or is tight or a gap is reserved. After the connection, the positioning plate 3 is used for positioning, and also blocks certain dust and the like from entering the connection gap from the top in the cutting process, and the positioning plate 5 and the arc-shaped connecting part 6 have the main function of providing torsion force during rotation after being cut by the drill positioning groove 30, so that the arc-shaped connecting part 6 is wider and is a main stressed part, and the positioning plate 5 is auxiliary and is evacuated for certain torsion force, so that the connection part can be better prevented from being damaged due to overlarge stress force.

In order to facilitate connection and removal, an optimized scheme is as follows: a clamping groove 7 is formed in the bottom of the connecting column 4, the clamping groove 7 is in an inwards concave rotary arc shape, and the drill bit clamping seat 18 is clamped on the clamping groove 7; the clamping groove 7 is in adaptive connection with a fixing screw 28 of the drill bit clamping seat 18. Thus, the plugging and the pulling are convenient, and the connection is convenient.

In order to further improve the stress intensity during rotation, a stress part 12 is arranged between the positioning plate 5 and the arc-shaped connecting part 6, the stress part 12 is in a shape consistent with that of the positioning plate 5, and meanwhile, a stress groove 15 matched with the stress part is arranged on the drill rod 13 and is in adaptive connection with the drill rod. Specifically, the number of the stress parts 12 is 2, so that the stress is uniform.

One solution that is more robust and can strengthen the connection strength is: threads are arranged on the upper surfaces of the arc-shaped connecting part 6 and the stress part 12; after the drill rod 13 is inserted into the connecting column 4, a drill bit clamping seat 18 is inserted into the bottom of the drill rod 13, the sleeve 17 is sleeved on the stress part 12 of the arc-shaped connecting part 6 and the drill rod 13 and screwed through threads, the sleeve 17 is a hollow through-hole sleeve, and one end of the sleeve is arranged to be matched with the positioning disk 3.

A more specific connection scheme is to set the positioning slots 30 and the positioning plates 5 to be 3 centrosymmetric or 4 axisymmetric, respectively, which are very convenient and practical, wherein less than 3 will result in unstable connection, more than four will weaken the strength of stress, and 3 or 4 are the best choices.

In this design, drilling rod 13 sets up to a cylindrical solid bar with spliced pole 4 looks adaptation, is provided with the counter bore in the one end center of pole, and drilling rod 13 includes drilling rod constant head tank 14 with arc connecting portion 6 looks adaptation, includes the first positioning column 16 with drill bit constant head tank 30 looks adaptation, includes the atress groove 15 with atress portion 12 looks adaptation, and drilling rod 13 states drilling rod constant head tank 14 symmetry according to the adaptation condition with the drill bit and sets up to 3 or 4, first positioning column 16 also symmetry sets up to 3 or 4, atress groove 15 is right then to be called to set up to 2, and the bottom of first positioning column 16 is provided with second positioning column groove 31, drill bit cassette 18 inlays to be established in second positioning column groove 31.

In this design, drill holder 18 includes base 32, the base sets up to a cylinder type, second reference column 19 sets up to the shape unanimous with first reference column 16, and second reference column 19 inlays to be established in second reference column groove 31 in order to with drilling rod 13 looks adaptation, second reference column 19 symmetry sets up to 3 or 4, connects the lateral wall that sets up at base 32 respectively. In order to facilitate the insertion of the clamping groove 7, a fastening nail groove 20 is formed in the inner side of the second positioning column (19), the fastening nail groove 20 is circular, a through hole 22 is formed in the center of the fastening nail groove (20), a fixing screw 28 is arranged in the through hole 22 in a sliding connection mode, the fixing screw 28 is T-shaped, and the contact position of the fixing screw 28 and the clamping groove 7 is of an arc-shaped structure matched with the clamping groove 7, so that the insertion and the extraction of the clamping groove 7 are facilitated.

In order to prevent the unstable clamping between the fastening nail groove 20 and the clamping groove 7, a cover plate groove 23 is arranged on the outer side of the second positioning column 19, the cover plate groove 23 is arranged in a circular row, a cover plate 25 matched with the cover plate groove 23 is embedded in the cover plate groove 23, and a spring 26 is arranged between the cover plate 25 and a fixing screw 28, so that the connection stability between the clamping groove 7 and the fastening nail groove 20 is enhanced through the elastic force of the spring.

In order to stabilize the connection of the cover plate 25, a screw hole 24 is arranged at the edge of the cover plate groove 23, the cover plate groove 23 is fixed by a screw 27, the screw 27 is arranged as an inner hexagon screw, and the nut surface of the screw 27 is flush with the surface of the drill bit clamping seat 18. In order to assist the sliding of the fixing screws 28, the inner side wall of the through holes 22 is provided with the fastening nail positioning grooves 21, the fixing screws 28 are provided with keys matched with the fastening nail positioning grooves 21, and specifically, the fastening nail positioning grooves 21 are symmetrically arranged into 2.

For convenience of installation and adjustment, an adjustment screw hole 29 is provided at the bottom of the base 32.

The length and the color of the sleeve 17 are set to be 42 times longer than that of the connecting column, so that the sleeve can completely cover a counter bore of the drill rod; a doubling interchanging structure is that a fan-shaped groove and a fan-shaped column are designed into shapes and sizes which are matched with each other.

The assembly sequence of the device is as follows:

the spring is fixed on the stable cover plate 25, then the stable cover plate 25 is fixed in the cover plate groove 23 through a screw, then the fixing screw 28 is inserted into the through hole 22, the whole drill bit clamping seat 18 is inserted into the bottom of the drill rod 13, the drill bit clamping seat is adjusted into the positioning column groove 31 through the adjusting screw hole 29 by using a pin shaft, then the sleeve 17 is sleeved on the drill bit, the sleeve 17 is fastened through the screw on the sleeve 17 after the drill bit is inserted, and finally the drill rod 13 and the drill bit form a closed whole.

Reference throughout this specification to "one embodiment," "another embodiment," "an embodiment," "a preferred embodiment," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment described generally in this application. The appearances of the same phrase in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the scope of the invention to effect such feature, structure, or characteristic in connection with other embodiments.

Although the invention has been described herein with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention. More specifically, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims

1. The utility model provides an electric coal drill chuck which characterized in that: comprises a base (32), a second positioning column (19), a fastening nail groove (20), a fastening nail positioning groove (21), a through hole (22), a cover plate groove (23), a cover plate (25), a spring (26), a screw (27), a fixing screw (28) and an adjusting screw hole (29); the base is arranged to be a cylindrical table, and the second positioning column (19) is arranged to be fan-shaped; the number of the second positioning columns (19) is more than or equal to 2, and the second positioning columns are respectively and symmetrically connected and arranged on the side wall of the base (32); the fastening nail groove (20) is round and is arranged on the inner side of the second positioning column (19); the through hole (22) is arranged at the center of the fastening nail groove (20); the cover plate groove (23) is formed in the outer side of the second positioning column (19), and the cover plate groove (23) is circular; the cover plate (25) is arranged to be round and matched with the cover plate groove (23) and is embedded in the cover plate groove (23); a fixing screw (28) is arranged in the fastening screw groove (20) in a sliding manner, and the fixing screw (28) is T-shaped; the spring (26) is arranged between the cover plate (25) and the fixing screw (28).

2. The electric coal drill chuck as claimed in claim 1, wherein: the number of the second positioning columns (19) is 3 or 4.

3. The electric coal drill chuck as claimed in claim 1, wherein: the second positioning column (19) and the base (32) are integrally formed or are in fastening connection through screws, and when the second positioning column and the base are in fastening connection through screws, grooves matched with the second positioning column (19) are formed in the base (32).

4. The electric coal drill chuck as claimed in claim 1, wherein: the device further comprises a screw hole (24), the screw hole (24) is formed in the edge of the cover plate groove (23), the cover plate (25) is fixed through a screw (27), and the screw (27) is arranged in the screw hole (24) in a threaded mode.

5. The electric coal drill chuck as claimed in claim 1, wherein: this device still includes fastening nail constant head tank (21), and fastening nail constant head tank (21) set up the inside wall at through-hole (22) to the symmetry sets up to 2, be provided with the key with fastening nail constant head tank (21) looks adaptation on set screw (28).

6. The electric coal drill chuck as claimed in claim 1, wherein: the device also comprises an adjusting screw hole (29), and the adjusting screw hole (29) is arranged at the bottom of the base (32).