Anti-falling cutting pick structure of cutting head

Abstract

The utility model discloses an anti-drop cutting pick structure of a cutting head, which comprises a cutting pick head, a cutting pick connecting shaft arranged at the tail end of the cutting pick head, a limiting ring table arranged at the front end of the cutting pick connecting shaft in a circumferential extension manner, an annular groove arranged on a shaft body at the rear end of the cutting pick connecting shaft, a piston ring arranged in the annular groove, and a baffle plate detachably fixed on the end surface of the rear end of the cutting pick connecting shaft, the blocking piece extends to the outer edge of the cutting pick connecting shaft to play a blocking role. According to the structure, due to the dual anti-falling design of the piston ring and the blocking piece, the fixing stability of the cutting pick is greatly improved, and the probability that the cutting pick falls off under the action of vibration and stress in the cutting process is reduced. Compared with a traditional single piston ring design, the double-anti-falling mechanism is more reliable, and the cutting pick can be effectively prevented from falling off under the complex and severe working conditions (such as cutting hard waste rocks or ironware).

Description

Technical Field

[0001] This utility model belongs to the technical field of cutting equipment for mining roadheaders, specifically relating to a structure for preventing the cutting teeth from detaching from the cutting head. Background Technology

[0002] During the production process of underground tunneling faces in coal mines, the cutting teeth on the cutting head of a roadheader are in direct contact with the coal body, experiencing significant forces and vibrations during cutting. This leads to occasional tooth detachment, especially when cutting through rockfill, where vibrations and forces are even greater, resulting in more tooth loss. Tooth loss directly impacts the roadheader, reducing cutting force, causing wear on the cutting head, and potentially damaging the equipment during transport. Furthermore, the high cost of cutting teeth contributes to increased production costs. On the other hand, detached teeth can fly out, threatening the safety of on-site workers. Roadheaders typically prevent tooth loss by using a retaining ring at the tail end of the tooth to secure it. However, this method is not foolproof, especially when cutting hard rock or metal, where teeth are prone to falling off. Utility Model Content

[0003] To address the technical problem that the use of expansion rings in existing technologies cannot effectively prevent cutting teeth from falling off, this utility model provides a cutting head anti-loosening cutting tooth structure.

[0004] The present invention adopts the following technical solution: a cutting head anti-detachment cutting tooth structure, including a cutting tooth head, a cutting tooth connecting shaft at the tail end of the cutting tooth head, a limiting ring extending circumferentially at the front end of the cutting tooth connecting shaft, an annular groove at the rear end of the cutting tooth connecting shaft, an expansion ring installed in the annular groove, and a baffle plate detachably fixed at the rear end face of the cutting tooth connecting shaft, the baffle plate extending to the outer edge of the cutting tooth connecting shaft to play a blocking role.

[0005] Furthermore, the rear end face of the cutting tooth connecting shaft is provided with a screw hole, and the baffle is fixedly connected to the cutting tooth connecting shaft by screws.

[0006] Furthermore, the screw hole is located at the center of the cutting tooth connecting shaft.

[0007] Furthermore, the baffle is a circular plate, the diameter of which is larger than the diameter of the cutting tooth connecting shaft.

[0008] The present invention has the following advantages over the prior art:

[0009] 1. This structure, through a dual anti-detachment design of expansion rings and baffles, greatly improves the stability of the cutting teeth and reduces the probability of them falling off under vibration and stress during the cutting process. Compared with the traditional single expansion ring design, this dual anti-detachment mechanism is more reliable and can effectively prevent the cutting teeth from falling off under more complex and harsh working conditions (such as when cutting hard rock or iron).

[0010] 2. By effectively preventing the cutting teeth from falling off, the maintenance frequency of the roadheader can be reduced, the service life of the equipment can be extended, maintenance costs can be saved, equipment downtime can be reduced, thereby improving production efficiency.

[0011] 3. By applying the anti-detachment cutting tooth structure, the probability of cutting teeth falling off can be effectively reduced, preventing the cutting teeth from flying out and causing injury to workers, thereby improving the safety of the working environment.

[0012] 4. With this anti-detachment structure, the phenomenon of cutting teeth falling off is reduced, which helps to reduce the consumption of cutting teeth, reduce production costs, and improve economic efficiency. The equipment can maintain efficient operation for a longer period of time, thereby further improving overall production efficiency.

[0013] 5. The baffle plate is fixed to the rear end face of the cutting tooth connecting shaft with screws, making the entire anti-detachment structure easy to install and disassemble. When the equipment needs maintenance, operators can quickly remove the baffle plate to inspect and replace the cutting teeth, which is convenient, quick, and improves maintenance efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] In the diagram: 1. Cutting tooth head; 2. Cutting tooth connecting shaft; 21. Limiting ring platform; 22. Annular groove; 3. Expansion ring; 4. Baffle plate. Detailed Implementation

[0016] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of an anti-detachment cutting tooth structure for a cutting head according to this utility model.

[0017] like Figure 1 As shown, a cutting head anti-detachment cutting tooth structure includes a cutting tooth head 1, a cutting tooth connecting shaft 2 provided at the tail end of the cutting tooth head, a limiting ring platform 21 extending circumferentially at the front end of the cutting tooth connecting shaft, an annular groove 22 provided at the rear end shaft of the cutting tooth connecting shaft, an expansion ring 3 installed in the annular groove 22, and a baffle 4 detachably fixed at the rear end face of the cutting tooth connecting shaft 2, the baffle 4 extending to the outer edge of the cutting tooth connecting shaft 2 to play a blocking role.

[0018] In this embodiment, the center of the rear end face of the cutting tooth connecting shaft 2 is drilled and threaded, and the baffle 4 is a circular plate with a diameter of φ40*2mm. The circular plate is fixed to the rear end face of the cutting tooth connecting shaft 2 by M10 screws.

[0019] In use, after inserting the cutting tooth into the tooth sleeve and attaching the expansion ring 3, install the retaining plate 4, and screw the M10 screw into the pre-drilled screw hole on the rear end face of the cutting tooth connecting shaft 2, and tighten it. If the expansion ring 3 falls off during operation, the cutting tooth will be held in place by the retaining plate 4, preventing it from coming loose.

[0020] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A pick retention structure for a cutting head, comprising: The application relates to a cutting tooth head (1), the tail end of the cutting tooth head (1) is provided with a cutting tooth connecting shaft (2), the front end of the cutting tooth connecting shaft (2) is provided with a limiting ring table (21) extending in the circumferential direction, the rear end of the cutting tooth connecting shaft (2) is provided with an annular groove (22), the annular groove (22) is provided with an expansion ring (3), the rear end surface of the cutting tooth connecting shaft (2) is detachably fixed with a baffle (4), and the baffle (4) extends to the outer edge of the cutting tooth connecting shaft (2) to play a blocking role.

2. The anti-backout cutting pick structure for a cutting head according to claim 1, wherein, The rear end surface of the cutting tooth connecting shaft (2) is provided with a screw hole, and the baffle (4) is fixedly connected with the cutting tooth connecting shaft (2) through a screw.

3. The anti-backout cutting pick structure for a cutting head according to claim 2, wherein, The screw hole is arranged at the central position of the cutting tooth connecting shaft (2).

4. The anti-extraction cutting pick structure of a cutting head according to any one of claims 1-3, characterized in that, The baffle (4) is a circular plate, and the diameter of the circular plate is larger than the diameter of the cutting tooth connecting shaft (2).

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