Protection device for cutting head of coal mine heading machine

Abstract

The utility model provides a protection device for a cutting head of a coal mine heading machine, and particularly relates to the field of heading machine equipment. The protection device comprises a hydraulic control system and a protection cover, the hydraulic control system is mounted at the top of a reduction gearbox of the heading machine through a fixing frame; the protective cover is connected with the hydraulic control system through a connecting rod; the protective cover is controlled to ascend and descend through a hydraulic control system, and protection and recovery are achieved. The device is simple and reasonable in structure and convenient to operate; the cutting head is integrally covered by the top plate protective net and the three side protective plates, so that the cutting part of the heading machine can be well protected; meanwhile, after being used, the protective cover can be recycled into a gap below the forepoling support of the heading machine, so that the problems that the protective cover of the cutting head of the traditional heading machine is inconvenient to move and difficult to store are solved.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine equipment, specifically to a protective device for the cutting head of a coal mine tunneling machine. Background Technology

[0002] The cutting head of a tunneling machine is often exposed. When the tunneling face is being supported, the cutting head is idle. When the support worker operates at the face, he may accidentally hit the sharp cutting teeth of the cutting head. Or, due to the misoperation of the tunneling machine operator, a safety accident can easily occur.

[0003] While traditional cutter head covers solve the aforementioned problems, they also present several issues: First, traditional covers are large, occupy a significant amount of space, and are somewhat cumbersome, causing inconvenience to pedestrians due to limited tunnel space. Second, due to space constraints, the protective cover needs to be moved to a location far from the tunneling machine for storage, making relocation inconvenient and reducing work efficiency. Third, traditional covers are external devices, requiring at least two people to manually lift and move them, making them inconvenient to use. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this utility model provides a protective device for the cutting head of a coal mine tunneling machine, the specific technical solution of which is as follows:

[0005] A protective device for the cutting head of a coal mine tunneling machine includes a hydraulic control system and a protective cover; the hydraulic control system is mounted on the top of the tunneling machine's gearbox via a fixed frame; the protective cover is connected to the piston rod of the hydraulic control system via a connecting rod; the protective cover is raised and lowered by the hydraulic control system to achieve protection and retrieval.

[0006] Preferably, the protective cover includes a top plate and three side protective plates located on the front and left and right sides of the top plate; the top plate is a rectangular frame structure, and a protective net is provided inside the frame.

[0007] Preferably, the outer diameter of the top plate and the side protective plate is less than or equal to the inner diameter of the gap below the forward support of the tunneling machine.

[0008] Preferably, the side plate and the top plate are connected by a hinge.

[0009] More preferably, the protective cover is made of steel.

[0010] Furthermore, preferably, an angular rib is provided between the connecting rod and the top plate.

[0011] More preferably, when the tunneling machine is in use, the protective cover is raised by the hydraulic control system and the three side protective plates are folded inward to the bottom of the top plate. Then the folded protective cover is retracted into the gap under the forward support of the tunneling machine to complete the storage of the protective cover.

[0012] After the tunneling machine is finished using it, the protective cover is lowered above the cutting head of the tunneling machine through the hydraulic control system. The side protective plate unfolds under its own weight and completely encloses the cutting head inside it.

[0013] The beneficial effects of this utility model are:

[0014] This utility model has a simple and reasonable structure and is easy to operate. The cutting head is completely covered by the top protective net and three side protective plates, which can effectively protect the cutting part of the tunneling machine and prevent injury to personnel caused by misoperation, slipping, collision, etc. At the same time, after the protective cover is used, it can be recycled into the gap under the front support of the tunneling machine, which solves the problems of inconvenience in moving and storage of traditional tunneling machine cutting head protective covers. Attached Figure Description

[0015] The accompanying drawings constituting this application are provided to further understand this application and do not constitute an undue limitation of this application.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the installation of this utility model on a tunneling machine;

[0018] In the diagram, 1-hydraulic control system; 101-fixed frame; 2-top plate; 201-protective net; 3-side protective plate; 4-connecting rod; 401-angular rib plate; 5-hinger. Detailed Implementation

[0019] The specific implementation of the cutting head protection device for a coal mine tunneling machine provided by this utility model will be further described in conjunction with the accompanying drawings and embodiments.

[0020] like Figure 1-2 As shown, a protective device for the cutting head of a coal mine tunneling machine is installed on top of the machine's gearbox and includes a hydraulic control system and a protective cover. Specifically, the hydraulic control system 1 is installed on top of the gearbox via a mounting bracket 101; the protective cover is connected to the piston rod of the hydraulic control system 1 via a connecting rod 4. To ensure the force distribution at the connecting rod 4, an angled rib 401 is also provided between the connecting rod 4 and the top plate 2. The protective cover is raised and lowered by the hydraulic control system 1 to achieve protection and retraction.

[0021] Preferably, the protective cover includes a top plate 2 and three side protective plates 3 hinged to the front end and left and right sides of the top plate 2 by hinges 5; the top plate 2 is a rectangular frame structure, and a protective net 201 is provided inside the frame.

[0022] Preferably, the outer diameter of the top plate 2 and the side protective plate 3 is less than or equal to the inner diameter of the gap below the front support of the tunneling machine, which can well meet the overall storage requirements of the protective cover.

[0023] Preferably, the protective cover is made of steel to ensure its support performance.

[0024] When the tunneling machine is in use, the protective cover is raised by the hydraulic control system 1 and the three side protective plates 3 are folded inward to the bottom of the top plate 2. Then the folded protective cover is retracted into the gap under the front support of the tunneling machine to complete the storage of the protective cover. This does not affect the normal use of the tunneling machine and does not require manual moving.

[0025] After the tunneling machine is used, the protective cover is lowered above the cutting head of the tunneling machine through the hydraulic control system 1. The side protective plate 3 unfolds by its own weight and completely wraps the cutting head inside, preventing injury to personnel caused by misoperation, slipping, collision and other situations.

[0026] This utility model has a simple and reasonable structure and is easy to operate. By covering the cutting head with a top protective net and three side protective plates, it can effectively protect the cutting part of the tunneling machine. At the same time, it solves the problems of inconvenient movement and difficult storage of traditional tunneling machine cutting head covers.

[0027] In this utility model, terms such as "upper," "lower," "bottom," and "top" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are merely used to facilitate the description of the structural relationships of the various components or elements of this utility model and do not specifically refer to any part or element of this utility model; they should not be construed as limiting this utility model. Terms such as "connected" and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and they should not be construed as limiting this utility model.

[0028] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A protective device for the cutting head of a coal mine tunneling machine, characterized in that, It includes a hydraulic control system and a protective cover; the hydraulic control system is mounted on top of the gearbox of the tunneling machine via a fixing frame; the protective cover is connected to the piston rod of the hydraulic control system via a connecting rod. The protective cover includes a top plate and three side protective plates located on the front and left and right sides of the top plate; the top plate is a rectangular frame structure, and a protective net is installed inside the frame; the side protective plates are connected to the top plate by hinges. The protective cover is raised and lowered by a hydraulic control system. When the tunneling machine is in use, the hydraulic control system raises the protective cover and folds the three side protective plates inward to the bottom of the top plate. Then, the folded protective cover is retracted into the gap under the forward support of the tunneling machine, thus achieving protection and retrieval.

2. The protective device for the cutting head of a coal mine tunneling machine according to claim 1, characterized in that, The outer diameter of the top plate and side protective plate is less than or equal to the inner diameter of the gap below the forward support of the tunneling machine.

3. The protective device for the cutting head of a coal mine tunneling machine according to claim 1, characterized in that, The protective cover is made of steel.

4. The protective device for the cutting head of a coal mine tunneling machine according to claim 1, characterized in that, An angular rib is also provided between the connecting rod and the top plate.

5. The protective device for the cutting head of a coal mine tunneling machine according to claim 4, characterized in that, After the tunneling machine is used, the protective cover is lowered above the cutting head of the tunneling machine through the hydraulic control system. The side protective plate unfolds under its own weight and completely encloses the cutting head inside.

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