Heading machine cutting pick with good wear resistance

Abstract

The utility model provides a heading machine cutting pick with good wear resistance, which relates to the technical field of cutting picks and comprises a pick head, a pick body fixedly connected to the bottom of the pick head, a first buffer spring arranged inside the pick body, a first buffer damper arranged inside the first buffer spring, and a connecting piece arranged on the outer surface wall of the pick body. The two telescopic rods are arranged in the pick body, through cooperation of the first buffer damper, the first buffer spring, the second buffer damper, the second buffer spring, the telescopic rods and the fixing block, vibration generated when the pick head works can be relieved when being transmitted to the pick body, and therefore the cutting pick is not prone to being damaged in the working process, the working safety of the cutting pick is guaranteed, and the service life of the cutting pick is prolonged. Under the action of a connecting piece, a second buffer damper and a second buffer spring can be protected, the working safety of the cutting pick is guaranteed, the working efficiency is improved, the pick head is made of a tungsten carbide hard alloy material, the wear resistance of the cutting pick can be improved, and the working efficiency of the cutting pick is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pick teeth, in particular to a pick tooth for a tunnel boring machine with good wear resistance. Background Art

[0002] Tunnel boring machine pick is a cutting tool used in tunnel boring machines to dig rocks and soil in underground projects. The pick is usually made of high-strength alloy steel, which is wear-resistant, corrosion-resistant and high-temperature resistant. They are usually installed on the cutter of the tunnel boring machine to dig underground rocks and soil by rotating and cutting.

[0003] However, when the existing tunnel boring machine picks are working, due to their long-term cutting operations, wear and tear easily occurs at the pick head, which reduces their service life, resulting in reduced efficiency of the cutting operation, affecting the operation of the tunnel boring machine and reducing work efficiency. In addition, when the cutting operation is performed, the picks will be impacted. If the picks are impacted for a long time, the internal structure of the picks will be damaged, reducing the service life of the picks and reducing work efficiency. Utility Model Content

[0004] The utility model aims to solve the problem that when a tunnel boring machine pick is working, due to its long-term cutting operation, wear is likely to occur at the pick head, reducing its service life, resulting in reduced efficiency of the cutting operation, affecting the work of the tunnel boring machine and reducing work efficiency. In addition, when the cutting operation is performed, the pick will be impacted. If the pick is impacted for a long time, the internal structure of the pick will be damaged, reducing the service life of the pick and reducing work efficiency. A tunnel boring machine pick with good wear resistance is proposed.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a tunnel boring machine pick with good wear resistance, comprising a tooth head, a tooth body fixedly connected to the bottom of the tooth head, a first buffer spring arranged inside the tooth body, and a first buffer damping arranged inside the first buffer spring.

[0006] Preferably, the outer wall of the tooth body is provided with a connecting piece, and the interior of the tooth body is provided with two telescopic rods.

[0007] Preferably, a second buffer spring is arranged inside the connecting member, and a second buffer damper is arranged inside the second buffer spring.

[0008] Preferably, a gear sleeve is movably provided on the outer wall of the gear body, and a plurality of insertion grooves are provided on the top of the gear sleeve.

[0009] Preferably, a tungsten carbide alloy wear-resistant sleeve is provided on the top of the tooth head, a fixing block is provided inside the tooth body, and the first buffer spring is provided on the top of the fixing block.

[0010] Preferably, a movable sleeve on the outer wall of the gear sleeve is provided with a gear seat, and a fixing plate is fixedly connected to the bottom of the gear seat.

[0011] Preferably, a threaded rod is fixedly connected to the top of the fixing plate, a threaded groove is provided at the bottom of the gear sleeve, and the gear sleeve is fixedly connected to the gear seat via the threaded rod and the threaded groove.

[0012] Compared with the prior art, the advantages and positive effects of the utility model are:

[0013] 1. In the utility model, by cooperating with the first buffer damper, the first buffer spring, the second buffer damper, the second buffer spring, the telescopic rod and the fixed block, the vibration generated when the tooth head is working can be slowed down when it is transmitted to the tooth body, so that the pick will not be easily damaged during work, ensuring its working safety and improving work efficiency. Then, under the action of the connecting piece, the second buffer damper and the second buffer spring can be protected, ensuring its working safety and improving work efficiency. Then, by adopting tungsten carbide hard alloy on the tooth head, the wear resistance of the pick can be improved, further improving the working efficiency of the pick.

[0014] 2. In the utility model, the pick can be conveniently and stably installed on the tunnel boring machine through the cooperation of the tooth head, tooth sleeve, tooth seat, thread groove and threaded rod, which is convenient for tunneling operations on rocks or soil and improves its work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model provides a main structural schematic diagram of a roadheader pick with good wear resistance;

[0016] Figure 2 A schematic diagram of the partial structural disassembly of a roadheader pick with good wear resistance is provided for the utility model;

[0017] Figure 3 The utility model provides a schematic diagram of the position structure of the insertion groove in the cutting teeth of a tunnel boring machine with good wear resistance;

[0018] Figure 4 The utility model provides a schematic diagram of the internal structure of a roadheader pick with good wear resistance.

[0019] Legend: 1. Tooth head; 2. Tooth sleeve; 3. Tooth seat; 4. Fixed plate; 5. Tungsten carbide alloy wear-resistant sleeve; 6. Tooth body; 7. Connector; 8. Thread groove; 9. Threaded rod; 10. Second buffer damper; 11. Telescopic rod; 12. First buffer spring; 13. Fixed block; 14. First buffer damper; 15. Second buffer spring. DETAILED DESCRIPTION

[0020] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0021] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. Example

[0022] like Figure 1-Figure 4 As shown, the utility model provides a technical solution: a tunnel boring machine pick with good wear resistance, comprising a tooth head 1, a tooth body 6 is fixedly connected to the bottom of the tooth head 1, a first buffer spring 12 is arranged inside the tooth body 6, a first buffer damping 14 is arranged inside the first buffer spring 12, a connecting piece 7 is arranged on the outer wall of the tooth body 6, two telescopic rods 11 are arranged inside the tooth body 6, a second buffer spring 15 is arranged inside the connecting piece 7, a second buffer damping 10 is arranged inside the second buffer spring 15, a tooth sleeve 2 is provided on the outer wall of the tooth body 6, a tungsten carbide alloy wear-resistant sleeve 5 is arranged on the top of the tooth head 1, a fixed block 13 is arranged inside the tooth body 6, and the first buffer spring 12 is arranged on the top of the fixed block 13.

[0023] In the present embodiment, firstly, the tooth head 1 is made of tungsten carbide cemented carbide, which has excellent wear resistance and can maintain stable cutting performance under high-speed cutting and heavy-load working conditions, thereby extending the service life of the pick, so that the pick will not be easily damaged when the tunnel boring machine is working, thereby improving the working efficiency of the tunnel boring machine. Then, when the tunnel boring machine is working, when the pick part contacts the rock layer or soil, it will cause the pick part to vibrate, but after the pick is vibrated for a long time, the internal structure of the tooth body 6 will be damaged, so that the first buffer spring 12 and the first buffer damper 14 absorb the vibration transmitted from the tooth head 1 to the tooth body 6, and reduce the vibration of the pick, so that the telescopic rod 11 can support the internal structure of the tooth body 6 to ensure that the tooth body 6 will not be easily damaged when working for a long time. The first buffer damper 14 and the first buffer spring 12 are installed on the top of the fixed block 13, so that they can stably reduce the vibration and improve the work efficiency. The vibration of the pick is further reduced by the second buffer spring 15 and the second buffer damper 10, reducing the vibration force on the tooth body 6 and extending the service life of the pick, thereby improving the work efficiency of the tunnel boring machine. The connecting piece 7 can protect the second buffer spring 15 and the second buffer damper 10 to ensure their operation safety and extend their service life. Then, under the action of the tungsten carbide alloy wear-resistant sleeve 5 on the outer wall of the tooth head 1, the outer wall of the tooth head 1 will not directly contact the rock or soil during the cutting operation, thereby reducing the wear of the tooth head 1, ensuring its work safety and extending its service life. Example

[0024] like Figure 1-Figure 4 As shown, a movable sleeve on the outer wall of the gear sleeve 2 is provided with a gear seat 3, a fixed plate 4 is fixedly connected to the bottom of the gear seat 3, a threaded rod 9 is fixedly connected to the top of the fixed plate 4, a threaded groove 8 is opened at the bottom of the gear sleeve 2, and the gear sleeve 2 is fixedly connected to the gear seat 3 through the threaded rod 9 and the threaded groove 8.

[0025] In this embodiment, the threaded connection is made between the threaded groove 8 at the bottom of the tooth sleeve 2 and the threaded rod 9 at the top of the fixed plate 4, so that the tooth sleeve 2 can be fixedly connected to the tooth seat 3, ensuring that the pick will not loosen during work, causing the tunnel boring machine to be unable to operate normally, thereby improving work efficiency.

[0026] The working principle of this embodiment is as follows: first, the tunnel boring machine is started to drive the tooth head 1 at the front end of the pick to cut the rock or soil. Under the action of the tooth head 1 made of tungsten carbide hard alloy, the tunnel boring machine can stably perform the cutting operation. Then, when the tunnel boring machine is working, the pick part contacts the rock layer or soil, which will cause the pick part to vibrate. However, after the pick is vibrated for a long time, the internal structure of the tooth body 6 will be damaged. In addition, with the cooperation of the tungsten carbide wear-resistant sleeve 5, the outer wall of the ring will not directly contact the rock or soil during the cutting operation, thereby reducing the wear of the tooth head 1. Then, the first buffer spring 12 and the first buffer damper 14 are used to transmit the vibration of the tooth head 1. The vibration caused to the tooth body 6 is absorbed, and the vibration of the cutting tooth is reduced. The telescopic rod 11 can support the internal structure of the tooth body 6 to ensure that the tooth body 6 will not be easily damaged and broken during long-term work. Then, the vibration of the cutting tooth is further reduced by the second buffer spring 15 and the second buffer damper 10 to reduce the vibration force on the tooth body 6. The connecting piece 7 can protect the second buffer spring 15 and the second buffer damper 10. Then, the threaded groove 8 at the bottom of the tooth sleeve 2 is threadedly connected to the threaded rod 9 at the top of the fixed plate 4, so that the tooth sleeve 2 can be fixedly installed inside the tooth seat 3, so that the tunnel boring machine can perform cutting operations normally.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A roadheader pick with good wear resistance, characterized in that: It comprises a tooth head (1), the bottom of the tooth head (1) being fixedly connected to a tooth body (6), a first buffer spring (12) being arranged inside the tooth body (6), and a first buffer damper (14) being arranged inside the first buffer spring (12).

2. The roadheader pick with good wear resistance according to claim 1, characterized in that: The outer wall of the tooth body (6) is provided with a connecting piece (7), and the interior of the tooth body (6) is provided with two telescopic rods (11).

3. The roadheader pick with good wear resistance according to claim 2, characterized in that: A second buffer spring (15) is arranged inside the connecting member (7), and a second buffer damper (16) is arranged inside the second buffer spring (15).

4. The roadheader pick with good wear resistance according to claim 3, characterized in that: The outer wall of the tooth body (6) is movably sleeved with a tooth sleeve (2), and the top of the tooth sleeve (2) is provided with a plurality of insertion grooves (10).

5. The roadheader pick with good wear resistance according to claim 1, characterized in that: A tungsten carbide alloy wear-resistant sleeve (5) is arranged on the top of the tooth head (1), a fixing block (13) is arranged inside the tooth body (6), and the first buffer spring (12) is arranged on the top of the fixing block (13).

6. The roadheader pick with good wear resistance according to claim 4, characterized in that: The outer wall of the gear sleeve (2) is movably sleeved with a gear seat (3), and the bottom of the gear seat (3) is fixedly connected to a fixing plate (4).

7. The roadheader pick with good wear resistance according to claim 6, characterized in that: A threaded rod (9) is fixedly connected to the top of the fixing plate (4), a threaded groove (8) is provided at the bottom of the gear sleeve (2), and the gear sleeve (2) is fixedly connected to the gear seat (3) via the threaded rod (9) and the threaded groove (8).

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