A mining pick

Abstract

A mining pick, mainly comprising a pick tip, a cutter head shank and an intermediate portion connecting the pick tip and the cutter head shank, the upper end portion of the cutter head shank being provided with a fixed cone, the intermediate portion comprising a mounting seat, a first fixing ring and a second fixing ring arranged in sequence from top to bottom, the inner ring shape and size of the first fixing ring corresponding to the shape and size of the fixed cone and being sleeved on the outer wall of the fixed cone, after sleeved, the top of the first fixing ring is higher than the top of the fixed cone, and the height difference between the first fixing ring and the fixed cone forms a circular groove for connecting the mounting seat; the top of the mounting seat is provided with a fixing groove for fixing the pick tip; the bottom of the first fixing ring is provided with a connecting groove, and the second fixing ring is connected to the first fixing ring by being clamped in the connecting groove at the bottom of the first fixing ring through the connecting boss on the top; it has the characteristics of simple structure, easy installation and long service life.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining machinery engineering, and in particular relates to a mining pick. Background Art

[0002] Mining picks are one of the most vulnerable parts in coal mining and tunneling machinery. They are the primary tool for dropping and crushing coal. Their performance directly affects the mining machinery's production capacity, power consumption, operational stability, and the service life of other related components. Existing mining picks primarily consist of a pick body and a carbide tip. The carbide tip is embedded in a recessed hole at the end of the pick body and secured by brazing. Since the carbide cutter head of the mining pick plays the role of coal mining and has good wear resistance, it can achieve a certain wear-resistant mining effect and improve the service life of the pick. However, as a mining pick product, during the specific mining process, the entire pick is inserted into the coal layer, and the carbide cutter head at the head plays a role of forward rotation and propulsion. The entire pick body, especially the front end of the pick body close to and said carbide cutter head is also more or less subjected to strong friction from the ore rock layer. Since the pick body is generally made of medium-carbon high-strength alloy steel through quenching and tempering treatment, its hardness and strength are much lower than the carbide cutter head embedded in the head, resulting in the pick body being worn out first during operation, thereby affecting the service life of the entire mining pick, and because the cutter head is fixed and welded, it is very inconvenient to replace. It is often necessary to replace the entire cutter seat before it can continue to be used, which is very wasteful. It is also a huge problem to store it after use. Because it is a cylinder, it is very inconvenient to install and remove it. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a mining pick with a simple and reasonable structure, easy to use, which can increase the wear resistance of the product surface, has high strength and fastness, and can improve the service life and use efficiency of the product in response to the above-mentioned defects of the prior art.

[0004] The objective of the present invention is achieved through the following technical scheme: a mining pick, mainly comprising a pick tip, a cutter head shank and an intermediate part connecting the pick tip and the cutter head shank, the upper end of the cutter head shank is provided with a fixed cone, the intermediate part comprises a mounting seat, a first fixing ring and a second fixing ring arranged in sequence from top to bottom, the inner ring shape and size of the first fixing ring correspond to the shape and size of the fixed cone and are sleeved on the outer wall of the fixed cone, after sleeved, the top of the first fixing ring is higher than the top of the fixed cone, and the height difference between the first fixing ring and the fixed cone forms a circular groove for connecting the mounting seat; the top of the mounting seat is provided with a fixing groove for fixing the pick tip; the bottom of the first fixing ring is provided with a connecting groove, and the second fixing ring is connected to the first fixing ring by being clamped in the connecting groove at the bottom of the first fixing ring through the connecting boss at the top.

[0005] Furthermore, a groove is circumferentially provided on the outer wall of the cutter head handle, and a ring buckle matching the outer surface of the groove is provided on the groove, and the ring buckle can enable the cutter head handle to rotate inside the ring buckle, and a wavy connecting notch is axially provided on the ring buckle, and a washer for fastening the ring buckle and the cutter head handle is radially provided on the outer wall of the ring buckle; an external thread is provided on the outer wall of the lower end portion of the cutter head handle, and a locking nut is provided through the external thread.

[0006] Furthermore, the pick tip includes a diamond tip exposed outside the fixing groove of the mounting seat and a carbide cutter head arranged below the diamond tip, and the mounting seat and the first fixing ring are both made of carbide material.

[0007] Furthermore, the upper and lower outer surfaces of the mounting seat and the first fixing ring are streamlined and gradually extend outward from top to bottom.

[0008] Furthermore, at least two positioning holes are provided on the outer wall of the buckle, and the gasket includes at least two first gaskets and a second gasket arranged in parallel.

[0009] The beneficial technical effects of the present invention are: simple and reasonable structure, easy use, increased wear resistance of the product surface, high strength and fastness, and increased product service life and use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0011] Figure 2 for Figure 1 AA cross-sectional structural diagram. DETAILED DESCRIPTION

[0012] In order to enable those skilled in the art to more clearly understand the objectives, technical solutions and advantages of the present invention, the present invention is further described below with reference to the accompanying drawings and embodiments.

[0013] like Figure 1-2 As shown, the mining pick described in the present invention mainly includes a pick tip 1, a cutter head shank 2 and an intermediate part 3 connecting the pick tip 1 and the cutter head shank 2, the upper end of the cutter head shank 2 is provided with a fixed cone 4, and the intermediate part 3 includes a mounting seat 5, a first fixing ring 6 and a second fixing ring 7 arranged in sequence from top to bottom, the inner ring shape and size of the first fixing ring 6 correspond to the shape and size of the fixed cone 4 and are sleeved on the outer wall of the fixed cone 4, after sleeved, the top of the first fixing ring 6 is higher than the top of the fixed cone 4, and the height difference between the first fixing ring 6 and the fixed cone 4 forms a circular groove for connecting the mounting seat 5; the top of the mounting seat 5 is provided with a fixing groove for fixing the pick tip 1; the bottom of the first fixing ring 6 is provided with a connecting groove, and the second fixing ring 7 is connected to the first fixing ring 6 by being clamped in the connecting groove at the bottom of the first fixing ring 6 through the connecting boss at the top.

[0014] Reference Figure 1-2 As shown, a groove 8 is circumferentially provided on the outer wall of the tool head shank 2, and a ring buckle 9 matching the outer surface of the groove 8 is provided on the groove 8, and the ring buckle 9 can enable the tool head shank 2 to rotate in the ring buckle 9, and a wavy connecting notch 10 is axially provided on the ring buckle 9, and a washer 11 for fastening the ring buckle 9 and the tool head shank 2 is radially provided on the outer wall of the ring buckle 9; an external thread 12 is provided on the outer wall of the lower end portion of the tool head shank 2, and a locking nut 13 is provided through the external thread 12; at least two positioning holes 14 are provided on the outer wall of the ring buckle 9, and the washer 11 includes at least two first washers 15 and a second washer 16 arranged in parallel.

[0015] Reference Figure 2 As shown, the upper and lower outer surfaces of the mounting seat 5 and the first fixing ring 6 are streamlined and gradually extend outward from top to bottom; the pick tip 1 includes a diamond tip 17 exposed outside the fixing groove of the mounting seat 5 and a carbide tip 18 arranged below the diamond tip 17, and the mounting seat 5 and the first fixing ring 6 are both made of carbide material.

[0016] The invention has the characteristics of simple and reasonable structure, easy use, ability to increase the wear resistance of the product surface, high strength and fastness, and ability to improve the service life and use efficiency of the product.

[0017] The specific embodiments described herein are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical concepts disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A mining pick, mainly comprising a pick tip, a cutter head shank, and an intermediate portion connecting the pick tip and the cutter head shank, characterized in that: The upper end of the cutter head shank is provided with a fixed cone, and the middle part includes a mounting seat, a first fixing ring and a second fixing ring arranged in sequence from top to bottom. The shape and size of the inner ring of the first fixing ring correspond to the shape and size of the fixed cone and are sleeved on the outer wall of the fixed cone. After sleeved, the top of the first fixing ring is higher than the top of the fixed cone, and the height difference between the first fixing ring and the fixed cone forms a circular groove for connecting the mounting seat; the top of the mounting seat is provided with a fixing groove for fixing the pick tip; the bottom of the first fixing ring is opened A connecting groove is provided, and the second fixing ring is clamped in the connecting groove at the bottom of the first fixing ring through the connecting boss on the top and is connected to the first fixing ring; a groove is circumferentially provided on the outer wall of the cutter head handle, and a ring buckle matching the outer surface of the groove is provided on the groove, and the ring buckle can enable the cutter head handle to rotate in the ring buckle, and a wavy connecting notch is axially provided on the ring buckle, and a washer for fastening the ring buckle and the cutter head handle is radially provided on the outer wall of the ring buckle; an external thread is provided on the outer wall of the lower end portion of the cutter head handle, and a locking nut is provided through the external thread.

2. The mining pick according to claim 1, characterized in that: The pick tip includes a diamond tip exposed outside the fixing groove of the mounting seat and a carbide cutter head arranged below the diamond tip. The mounting seat and the first fixing ring are both made of carbide material.

3. The mining pick according to claim 1, characterized in that: The upper and lower outer surfaces of the mounting seat and the first fixing ring are streamlined and gradually extend outward from top to bottom.

4. The mining pick according to claim 1, characterized in that: At least two positioning holes are provided on the outer wall of the buckle, and the gasket comprises at least two first gaskets and a second gasket which are arranged in parallel.

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