Conical cutting pick with protection ring

Abstract

The utility model provides a conical cutting pick with a protection ring, and mainly relates to the field of cutting picks. The conical cutting pick with the protection ring comprises a pick body, the pick body comprises a head part at the top and a handle part at the bottom, main alloy is arranged at the top of the head part, a plurality of alloy strips are arranged on the outer side of the top of the head part, and the protection ring is arranged on the outer sides of the alloy strips. The cutting pick has the beneficial effects that the cutting pick has good wear resistance and impact resistance, and the service life of the whole cutting pick is prolonged due to a dual-protection structure.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the pick field, concretely is a kind of conical pick with protective ring. BACKGROUND

[0002] In mining engineering machinery such as coal winning machine, heading machine, conical pick is used as cutter for directly cutting coal seam or breaking rock, and it is easy-wear component under poor working condition.According to statistics, most of the abnormal wear failure of conical pick shows as tooth body front end cracking and wear, and alloy head loses protection support prematurely, thereby falling off.

[0003] In order to solve the problem of conical pick losing alloy head, patent No.

[0004] First, the wear-resistant hard alloy strip brazed at the front end of tooth body is tungsten-cobalt alloy, which has poor impact resistance, and when encountering complex and impact conditions, the stress of conical pick is uneven, the impact of tungsten-cobalt alloy strip on the material to be scooped will increase and be frequent, and it is easy to crack, which cannot effectively protect the main alloy.

[0005] Second, the wear-resistant hard alloy strip and the tooth body are welded together by brazing.The solder has liquid flowability after heating and melting, and when brazing the tungsten-cobalt alloy strip, the solder will overflow along the gap between the wear-resistant hard alloy strip and the tooth body because it cannot be effectively blocked.In order to improve the fullness of the solder, additional solder needs to be manually supplemented, which causes serious waste of solder and low welding efficiency.The overflowed solder will solidify on the tooth body and the wear-resistant strip alloy, and needs to be ground after welding, which increases the additional processing procedure.

[0006] Third, because the overflow of solder cannot be effectively controlled and additional manual solder supplement is needed, it is more difficult to use automatic welding production line, which increases the difficulty of batch production and process control. CONTENT OF THE UTILITY MODEL

[0007] To solve the problems of the prior art, the utility model provides a conical pick with protective ring, which has good wear resistance and impact resistance, and the double protection structure improves the service life of the pick.

[0008] The utility model realizes the above-mentioned purpose by the following technical solutions.

[0009] A conical pick with a protective ring, comprising a pick body, the pick body comprising a head at the top and a shank at the bottom, the head top is provided with a main alloy, the head top is provided with a plurality of alloy strips outside, and the alloy strips are provided with a protective ring outside.

[0010] The top surface of the head is provided with a mounting groove, and the main alloy is welded and fixed in the mounting groove.

[0011] The main alloy comprises a tip and a tail end, the tail end is cylindrical, the tail end is welded and fixed with the mounting groove, and the tip is conical, and after the main alloy is fixed in the mounting groove, the tip is exposed above the head.

[0012] The outer circle of the head top is uniformly provided with a plurality of welding grooves, and the alloy strips correspond to the welding grooves one by one.

[0013] The middle part of the head is provided with a recess, and the protective ring is matched with the recess, and after the protective ring is sleeved on the recess, the outer side surface of the protective ring is continuously connected with the outer side surface of the head.

[0014] The height of the top of the protective ring is higher than the height of the alloy strip.

[0015] The top of the protective ring is 1mm higher than the top of the alloy strip.

[0016] The alloy strip has 6.

[0017] Compared with the prior art, the beneficial effects of the present application are:

[0018] The conical pick provided by the utility model has good wear resistance and impact resistance, is more suitable for complex geological conditions, and the double protection structure can improve the service life of the whole, and the protective ring can cooperate with the alloy strip to bear impact after wear, so that the alloy strip is less likely to be broken.

[0019] The present application is more beneficial to brazing when producing, and the excess solder flows into the gap between the protective ring and the pick body and the alloy strip when brazing the alloy strip, so as to braze the alloy strip protective ring, improve the utilization rate of the brazing filler metal, and reduce the process of grinding the slag after welding the tungsten-cobalt alloy strip. The structure almost does not need manual supplement of flux after brazing, so it is more beneficial to automatic welding production line and improves the production efficiency of the pick.

[0020] The protective ring of the present application has no limitation in material selection, and the protective ring can be turned, welded and replaced, and is more economical in application. BRIEF DESCRIPTION OF DRAWINGS

[0021] ATTACHMENT Figure 1 It is a structural schematic diagram of the utility model;

[0022] ATTACHMENT Figure 2Is the explosion structure schematic diagram of the utility model;

[0023] Attached Figure 3 Is the overhead view angle structure schematic diagram of the utility model;

[0024] Attached Figure 4 Is the utility model Figure 3 A-A cross section structure schematic diagram in the utility model;

[0025] Attached Figure 5 Is the utility model Figure 4 B part local amplification structure schematic diagram in the utility model.

[0026] The reference numerals shown in the drawing: 1, tooth body;2, main alloy;3, alloy strip;4, protection ring;11, head;12, handle;13, installation groove;14, welding groove;15, concave table;21, tip;22, tail end. DETAILED DESCRIPTION

[0027] The utility model is further explained in combination with the drawings and specific embodiments. It should be understood that these embodiments are only for illustrating the utility model and are not for limiting the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the present application.

[0028] As Figures 1-5 Indicated, the utility model discloses a kind of protection ring's conical pick, including tooth body 1, tooth body 1 includes the head 11 of top and the handle 12 of bottom, head 11 is as the protection and installation site of main alloy 2, handle 12 is used as connecting component to be installed with tooth cover or tooth seat cooperation. Head 11 is conical structure as a whole, and main alloy 2 is installed on the top surface of head 11.

[0029] Main alloy 2 is the site of pick mainly cutting coal seam or breaking rock, and material is tungsten-cobalt alloy. Specifically, the top surface of head 11 is provided with installation groove 13, and the main alloy 2 is fixed in the installation groove 13 by brazing process welding. Main alloy 2 includes tip 21 and tail end 22, and the tail end 22 is cylindrical, and the tail end 22 is fixedly connected with the installation groove 13. After installation, main alloy 2 is coaxially installed with tooth body 1. Tip 21 is conical, and when main alloy 2 is fixed in installation groove 13, tip 21 is exposed above head 11. In the embodiment, the bottom diameter of tip 21 is greater than the diameter of tail end 22, and the tip 21 of larger main alloy 2 can guarantee better cutting coal seam and breaking rock effect.

[0030] A plurality of alloy strips 3 are arranged on the top of the head 11, and a protective ring 4 is arranged outside the alloy strips 3. Specifically, a plurality of welding grooves 14 are uniformly arranged on the top of the head 11, and the alloy strips 3 are installed in the welding grooves 14 one by one, and the alloy strips 3 are welded in the welding grooves 14 by brazing process. A concave platform 15 is arranged in the middle of the head 11, and the protective ring 4 cooperates with the concave platform 15. When the protective ring 4 is sleeved on the concave platform 15, the outer side surface of the protective ring 4 is continuously connected with the outer side surface of the head 11. The protective ring 4 is made of the same material as the tooth body 1, and the protective ring 4 is also welded on the tooth body 1 by brazing process.

[0031] The height of the top of the protective ring 4 is higher than the height of the alloy strip 3, and the bottom of the protective ring 4 abuts against the top surface of the concave platform 15, thereby completing the coverage of the alloy strip 3. When brazing, the solder will rise and expand with the exhaust air, and some of the solder will overflow. The groove structure formed by the protective ring 4 higher than the alloy strip 3 can effectively hold the overflowed solder. The gravity and fluidity of the solder can flow into the gap between the tooth body and the alloy strip in the later stage of welding, thereby improving the fullness of the solder. When brazing the tungsten-cobalt alloy strip, the excess solder flows into the gap between the protective ring 4 and the tooth body and the alloy strip 3, which is used to braze the protective ring 4, thereby improving the utilization rate of the brazing solder, reducing the process of grinding the slag after welding the tungsten-cobalt alloy strip 3, and being more conducive to the automatic welding production line, thereby improving the production efficiency of the cutting tooth. More specifically, the top of the protective ring 4 is 1 mm higher than the top of the alloy strip 3, so as to satisfy the protection performance of the alloy strip 3 and the effective welding during welding.

[0032] Specifically, in the embodiment, the alloy strip 3 has six alloy strips 3, and the alloy strips 3 are uniformly arranged on the top of the head 11. The protective ring 4 is welded on the outside of the alloy strip 3, and cooperates with the alloy strip 3 to protect the main alloy 2. In use, the protective ring 4 is first worn out, because the material of the protective ring 4 is more wear-resistant than the alloy strip 3, so the protective ring 4 is first worn out, and gradually exposes the alloy strip 3. Then, the alloy strip 3 is impacted by the rock stratum together with the protective ring 4, and the protective ring 4 can assist the alloy strip 3, so that the alloy strip 3 will not be directly broken due to the thinness, thereby fully playing the wear-resistant performance of the alloy strip 3, and more effectively protecting the main alloy 2, thereby improving the use of the cutting tooth.

Claims

1. A conical pick with a protection ring, comprising a pick body (1), characterized in that: The tooth body (1) comprises a head (11) at the top and a handle (12) at the bottom, the head (11) is provided with a main alloy (2) at the top, a plurality of alloy strips (3) are provided outside the head (11), and a protection ring (4) is provided outside the alloy strips (3).

2. A conical pick with a protective ring according to claim 1, characterized in that: The top surface of the head (11) is provided with a mounting groove (13), and the main alloy (2) is welded and fixed in the mounting groove (13).

3. A conical pick with a protective ring according to claim 2, characterized in that: The main alloy (2) comprises a tip (21) and a tail end (22), the tail end (22) is cylindrical, the tail end (22) is welded and fixed with the mounting groove (13), and the tip (21) is conical, after the main alloy (2) is fixed in the mounting groove (13), the tip (21) is exposed above the head (11).

4. The conical pick with a protective ring according to claim 1, characterized in that: A plurality of welding grooves (14) are uniformly arranged outside the top of the head (11), and the alloy strips (3) correspond to the welding grooves (14) one by one.

5. A conical pick with a protective ring according to claim 1, characterized in that: A concave platform (15) is arranged in the middle of the head (11), the protection ring (4) is matched with the concave platform (15), after the protection ring (4) is sleeved on the concave platform (15), the outer side surface of the protection ring (4) is continuously connected with the outer side surface of the head (11).

6. A conical pick with a protective ring according to claim 1, characterized in that: The height of the top of the protection ring (4) is higher than the height of the alloy strip (3).

7. A conical pick with a protective ring according to claim 6, characterized in that: The top of the protection ring (4) is 1mm higher than the top of the alloy strip (3).

8. A conical pick with a protective ring according to claim 1, characterized in that: The alloy strip (3) has 6.

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