CN212079303U - Novel drilling conical cutting pick - Google Patents

Abstract

The utility model provides a novel creep into toper pick, including main alloy and the pick body, the pick body includes tooth stalk portion and tooth body portion, the side of tooth body portion evenly is provided with many to two-way groove, the tip of tooth body portion rotates and is provided with from turning, the front end of turning is provided with the concave part portion, the side of tooth body portion and the internal surface of concave part portion all are provided with wear-resisting surfacing layer, main alloy includes toper head and column body portion, the side of column body portion evenly is provided with a plurality of logical grooves of lining up its front and back terminal surface, the welding of column body portion is in the concave part. The utility model effectively improves the rotation performance of the device by utilizing the rotation body with the bidirectional groove design, and the abrasion-resistant protection effect of the abrasion-resistant surfacing layer ensures that the main alloy and the cutting pick body are uniformly abraded along the radial direction, thereby effectively preventing eccentric wear and improving the rock breaking capacity; the through grooves of the main alloy are beneficial to improving the welding performance of the main alloy. The device has reasonable design and simple structure, and is suitable for large-scale popularization.

Description

Novel drilling conical cutting pick

Technical Field

The utility model belongs to the technical field of the industry tunnelling equipment, especially, relate to a novel creep into toper pick.

Background

In mining engineering machinery such as coal mining machines, heading machines and the like, a conical cutting pick is used as a cutter for directly cutting a coal bed or breaking rocks, has severe working conditions and belongs to a vulnerable part. The conical cutting tooth belongs to a point impact tool, and needs effective rotation when cutting a coal seam or breaking rocks, and is used for drilling and buffering the hard buffering stress of the cutting tooth. The underground working environment is very severe, a large amount of impurities such as coal gangue are mixed in a coal seam, and the requirement of the tunneling equipment on the rock breaking capacity of cutting teeth is higher and higher along with the development of the tunneling industry.

The existing conical cutting pick is simple in structure and basically comprises a cutting pick body and an alloy head, and a wear-resistant layer is arranged on the cutting pick body close to the alloy head. However, the existing cutting pick is easy to clamp under the conditions of high impact, high stress and high abrasion, and cannot effectively rotate, so that the single side of the conical cutting pick is seriously abraded to form eccentric wear, the conical cutting pick cannot play a due role, rock cannot be effectively broken, and the service life is reduced by about 35%. Moreover, because the cutting ability of the cutterhead has directly been decided to the broken rock ability of toper pick, is the important index of deciding complete machine operational capability, so when the toper pick carries out the circumference rotation on the cylinder and breaks the rock, must have certain cutting speed and sufficient cutting power, just can realize the effective breakage to the coal petrography, but the cutting power of current pick shows obvious not enough under the high-speed rotation condition, and its cutting ability still remains to promote.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the technical problem that foretell toper pick exists in the aspect of the cut, provide a reasonable in design, simple structure, have two-way rotation ability, life is longer and the higher novel toper pick that creeps into of broken rock ability.

In order to achieve the above object, the present invention adopts the technical solution that, the present invention provides a novel conical drilling cutting pick, comprising a main alloy and a cutting pick body, wherein the cutting pick body comprises a pick shank portion and a pick body portion, the side surface of the pick body portion is uniformly provided with a plurality of pairs of bidirectional grooves, the bidirectional grooves comprise a forward groove and a reverse groove which are arranged in an inverted splayed shape, the cross sections of the forward groove and the reverse groove are both triangular, the widths of the forward groove and the reverse groove are gradually narrowed in the direction from the front to the back, the bottom edges of the forward groove and the reverse groove are both inclined backward, the end portion of the pick body portion rotates to be provided with a self-rotating body, the head portion of the self-rotating body is conical, the front end of the self-rotating body is provided with a recessed portion, the side surface of the pick body portion and the inner surface of the recessed portion are both provided with a wear-resistant surfacing layer, the side of column portion evenly is provided with a plurality of logical grooves that link up its front and back terminal surface, the welding of column portion is in concave station portion.

Preferably, the main alloy is made of a tungsten-cobalt alloy, the bottom of the main alloy is welded with a hardfacing layer in the concave portion, and the hardfacing layer is made of a wear-resistant welding wire, hardfacing alloy particles or diamond alloy powder.

Preferably, the bottom surface of the column part is provided with a plurality of spherical protrusions distributed in a circular array, and the top surface of the concave table part is provided with a spherical groove matched with the spherical protrusions.

Compared with the prior art, the utility model has the advantages and positive effects that,

1. the novel drilling conical cutting pick provided by the utility model has the advantages that the autorotation performance of the device is effectively improved by utilizing the autorotation body with the bidirectional groove design, and the wear-resistant protection effect of the wear-resistant surfacing layer is added, so that the main alloy and the cutting pick body are uniformly worn along the radial direction, the eccentric wear is effectively prevented, and the rock breaking capacity is improved; the through groove of the main alloy in the device is beneficial to improving the welding performance of the main alloy. The device has reasonable design and simple structure, and is suitable for large-scale popularization.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic view of an assembly structure of a novel drilling conical cutting pick provided by an embodiment;

FIG. 2 is a top view of the novel drilling conical pick provided by the embodiments;

FIG. 3 is an isometric view of a novel drilling conical pick provided by the embodiments;

in each of the above figures, 1, a master alloy; 11. a conical head; 12. a cylindrical portion; 121. a through groove; 122. spherical surface is convex; 2. a pick body; 21. a shank portion; 22. a tooth body portion; 221. a bi-directional slot; 3. a self-rotating body; 31. a recessed portion; 311. a spherical groove; 4. a hardfacing layer.

Detailed Description

In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "front" and "rear" appearing hereinafter merely indicate the same direction as the upper and lower directions of the attached fig. 1 itself, and do not limit the structure.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.

In the embodiment, as shown in fig. 1, 2 and 3, the novel conical drilling cutting pick provided by the present invention comprises a main alloy 1 and a cutting pick body 2, wherein the cutting pick body 2 comprises a shank portion 21 and a body portion 22, a plurality of pairs of bidirectional grooves 221 are uniformly arranged on the side surface of the body portion 22, each of the bidirectional grooves 221 comprises a forward groove and a reverse groove arranged in an inverted splayed shape, the cross sections of the forward groove and the reverse groove are triangular, the widths of the forward groove and the reverse groove are gradually narrowed in the direction from front to back, the groove bottom edges of the forward groove and the reverse groove are both inclined backwards, the end portion of the body portion 22 is rotatably provided with a self-rotating body 3, the head portion of the self-rotating body 3 is conical, the front end of the self-rotating body 3 is provided with a recessed table portion 31, the side surface of the body portion 22 and the inner surface of the recessed table portion 31 are both provided with a hardfacing layer 4, the main alloy 1 comprises a conical head, the side surfaces of the column portion 12 are uniformly provided with a plurality of through grooves 121 penetrating the front and rear end surfaces thereof, and the column portion 12 is welded in the recessed portion 31. The bottom of the rotation body 3 is rotatably clamped on the tooth body 22, the clamping structure can adopt a design similar to the two-way rotation of an electric drill head, and can also adopt one-step forming design of other industrial forms to be clamped on the tooth body 22, the rotation body 3 can realize the rotation action in two directions, namely clockwise and anticlockwise directions, correspondingly, the design of the two-way groove 221 can effectively match the characteristics of the two-way rotation of the rotation body 3, and therefore the cutting or drilling capacity requirement of the cutting tooth is met. The number of pairs of the bidirectional grooves can be increased reasonably according to the side shape or the area of the tooth body.

Specifically, since the shearer generally is a dual drum shearer, in order to load coal falling from the drum into the scraper conveyor, the spiral direction of the spiral blade on the drum must be adapted to the rotation direction of the drum, and the spiral blade must rotate right for the drum rotating clockwise (as viewed by a person standing on the goaf side); the direction of the spiral blade of the roller rotating anticlockwise must be rotated leftwards, and the roller can be classified into left rotation and right rotation. Therefore, when the cutting pick rotates on the drum in a circle, the rotation directions of the cutting pick are different due to the difference between the arranged left-handed drum and the right-handed drum. The function of the self-rotating body 3 is highlighted, the defect that the existing cutting tooth cannot rotate bidirectionally is overcome, the main alloy 1 and the cutting tooth body 2 are uniformly abraded along the radial direction by the unique self-rotating performance, the matched cutting or chip-removing function of the bidirectional groove 221 and the abrasion-resistant protection function of the abrasion-resistant surfacing layer 4, eccentric wear is effectively prevented, the rock breaking capacity is improved, and the design service life of the main alloy 1 and the cutting tooth body 2 is effectively prolonged. The width of the bidirectional groove 221 and the torque of the cutting pick are adapted from front to back, so that the cutting pick can play a role in cutting and chip dumping, the torque variable of the whole cutting pick, particularly the torque variable of the pick body part 22 on the unit axial length, can be reduced to a certain extent, and the structural strength of the bidirectional groove and the pick body part is effectively improved due to the fact that the forward groove and the reverse groove are designed to be triangular sections.

Further, the design of the through groove of the main alloy 1 can promote the leading-out of the welding gas generated by welding the main alloy and the tooth body part, so that the welding performance of the main alloy 1 and the tooth body part 22 is improved, the heat dissipation of the main alloy in the working state can be promoted to a certain extent, the heat dissipation effect is achieved, the effective service life of the main alloy is prolonged, and the cost is reduced.

In order to guarantee that main alloy 1 and tooth body portion 22 have longer life, the utility model discloses well main alloy 1 is made by the tungsten cobalt alloy, and the bottom of main alloy 1 welds with 4 welding bead layers of the hardfacing in the concave station portion, and 4 welding bead layers of hardfacing are made by wear-resisting welding wire, surfacing alloy granule and diamond alloy powder wherein arbitrary material. The tungsten-cobalt alloy is hard alloy, has the characteristics of high hardness, wear resistance, good heating uniformity and strong impact resistance, can adapt to the working property of high-strength impact in cutting coal beds or breaking rocks by cutting picks, and has strong working capacity and long service life; the wear-resistant welding wire, the surfacing alloy particles and the diamond alloy powder are all wear-resistant materials, have better wear resistance, strong bonding capacity with alloy and strong stripping resistance, can adapt to long-time and high-strength impact grinding, and have longer service life. The cost is effectively reduced by reasonably selecting the materials of the main alloy 1 and the hardfacing layer 4.

In order to improve the welding strength of main alloy 1 and tooth body portion 22, the utility model provides a tooth body portion is in the same place through high frequency welded connection with main alloy, and the bottom surface of barrel portion 12 is provided with a plurality of spherical surface archs 122 that are circular array and distribute, and concave table portion 31's top surface is provided with the spherical groove 311 with the protruding complex of spherical surface, can effectively increase the area of contact on the two surface through the design that increases spherical groove 311 and spherical surface archs 122, makes main alloy more firm with being connected of tooth body portion.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.

Claims (3)

1. The novel drilling conical cutting pick comprises a main alloy and a cutting pick body, wherein the cutting pick body comprises a pick handle part and a pick body part, and is characterized in that a plurality of pairs of bidirectional grooves are uniformly arranged on the side surface of the pick body part, each bidirectional groove comprises a forward groove and a reverse groove which are arranged in an inverted splayed manner, the cross sections of the forward groove and the reverse groove are triangular, the widths of the forward groove and the reverse groove are gradually narrowed in the direction from the front to the back, the bottom edges of the forward groove and the reverse groove are inclined backwards, the end part of the pick body part is rotatably provided with a self-rotating body, the head part of the self-rotating body is conical, the front end of the self-rotating body is provided with a concave part, the side surface of the pick body part and the inner surface of the concave part are respectively provided with a wear-resistant surfacing layer, the main alloy comprises a conical head part and a column body part, the side surface of the column, the post portion is welded in the recessed land portion.

2. The novel drilling conical pick of claim 1, wherein the primary alloy is made of a tungsten cobalt alloy, the bottom of the primary alloy is welded to a hardfacing layer in the pocket, and the hardfacing layer is made of a hardfacing wire, hardfacing alloy particles, or diamond alloy powder.

3. The novel drilling conical pick of claim 2, wherein the bottom surface of the body portion is provided with a plurality of spherical projections arranged in a circular array, and the top surface of the table portion is provided with spherical grooves for engaging the spherical projections.

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