A semi-automatic safety protection device for a cutting head of a fully-mechanized coal mining face

Abstract

The utility model discloses a kind of fully mechanized heading machine cutting head semi-automatic safety protection devices, including heading machine cutting part, the one end of heading machine cutting part is fixedly installed with cutting head, the upper surface of heading machine cutting part is fixedly installed with fixed frame, the inside of fixed frame is slidably installed with moving frame, the inboard of moving frame is fixedly connected with supporting plate, the front end of supporting plate is hingedly installed with turnover plate, the three side edges of turnover plate are hingedly connected with hinged shaft, the side of hinged shaft is hingedly connected with side protection plate, the outside side of cutting head is slidably connected with side protection plate, the outer surface edge position of side protection plate is equipped with locating cylinder, the inside of locating cylinder is equipped with square hole, square insert rod is slidably inserted in the inside of square hole, square insert rod is slidably connected on the one side of the outer surface of side protection plate, can be mutually reinforced, improve the security of isolation protection, benefit control use, high efficiency and stability.

Description

Technical Field

[0001] This utility model relates to the field of cutting head protection, and more specifically, to a semi-automatic safety protection device for the cutting head of a roadheader. Background Technology

[0002] A roadheader is a comprehensive mechanized equipment that integrates multiple functions such as tunneling, rock loading, coal transportation, and track anchoring. The overall structure of a roadheader consists of several parts, including a cutting section, a shovel section, a first transportation section, a main body section, and a rear support section. The cutting section of the roadheader is mainly responsible for the coal dropping process. When the cutting section cuts the coal, the coal falls off. To prevent the cutting section from being affected by the falling coal, safety protection devices are usually used.

[0003] Currently, the protective covers used for cutting heads vary widely and lack a unified standard. Most are integral, fixed structures, primarily made of angle steel and metal mesh, making them quite heavy. Each time the protective cover is moved, it requires 2-3 construction workers. Due to the frequent use, weight, and large size of the protective cover, which occupies the already limited working space, safety inspections have revealed that some construction workers, to save time, do not cover the protective cover, creating safety hazards for the workers.

[0004] The utility model patent with authorization announcement number CN 219316948 U discloses a folding type semi-automatic safety protection device for a roadheader cutting head. This device includes a steel plate, a rubber plate, and connecting rings. The steel plate has a rotatable rubber plate connected to its left side. Multiple connecting rings are attached to the rubber plate, and each connecting ring is also snap-fitted to a rubber plate. This utility model discloses a semi-automatic safety protection device for a roadheader cutting head. A rotating block, via a connecting shaft, drives a steel plate to rotate, keeping the steel plate upright and thus shielding it from falling rocks. Alternatively, the rotating block, through the connecting shaft, can also rotate the steel plate horizontally, allowing it to be positioned correctly. This design enables the device to switch between various configurations to shield falling rocks, improving its functionality.

[0005] The structure described above is not only unfavorable for proper installation on the tunneling machine, but also lacks corresponding positioning cylinders and square inserts. The combined protective plates are also not conducive to combined reinforcement, have poor adaptability, and the folded protective plates are not conducive to stable positioning and lack stability, which needs to be improved. Utility Model Content

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a semi-automatic safety protection device for the cutting head of a roadheader. The device connects the movable frame and the support plate through a fixed frame, and the side protection plate is hinged to the hinged flip plate. It can be installed and fixed in combination, which is conducive to telescopic adjustment of position and avoids interference. It can also be flipped and unfolded for coverage and protection. At the same time, the square plug is connected by the positioning cylinder, which can reinforce each other, improve the safety of isolation protection, facilitate control and use, and is efficient and stable.

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A semi-automatic safety protection device for a roadheader cutting head includes a roadheader cutting section. A cutting head is fixedly installed at one end of the cutting section. A fixed frame is fixedly installed on the upper surface of the cutting section. A movable frame is slidably installed inside the fixed frame. A support plate is fixedly connected to the inner side of the movable frame. A flipping plate is hinged to the front end of the support plate. A hinge shaft is hinged to three edges of the flipping plate. A side protection plate is hinged to one side of the hinge shaft. The side protection plate is slidably connected to the outer side of the cutting head. A positioning cylinder is provided at the outer edge of the side protection plate. A square hole is provided inside the positioning cylinder. A square rod is slidably inserted into the square hole. The square rod is slidably connected to one side of the outer surface of the side protection plate.

[0009] Furthermore, one end of the square insert is fixedly connected to a right-angle connecting rod, which is snapped into the corner of the side protective plate.

[0010] Furthermore, the two ends of the right-angle connecting rod are fixedly connected to a clamping block, which is clamped to the outer surface of the side protective plate.

[0011] Furthermore, there are three side protective plates connected to the sides of the cutting head. The flip plate covers the upper surface of the cutting head. The right-angle connecting rod and the clamping block are connected by a square insert rod. The adjacent side protective plates can be combined and positioned to form a stable protective cover for isolation and protection, which is safe, stable and highly adaptable.

[0012] Furthermore, mounting plates are fixedly connected to both ends of the lower surface of the fixed frame, and mounting holes are provided at both ends of the mounting plates. The mounting holes are fixedly installed on the upper surface of the cutting part of the tunneling machine by screws.

[0013] Furthermore, a right-angle positioning frame is fixed to one end of the mounting plate, and the right-angle positioning frame is located at the rear end of the fixed frame.

[0014] Furthermore, the right-angle positioning frame has a snap-fit ​​notch at the bottom, and a rubber clamping block is fixedly attached to the side of the snap-fit ​​notch. The mounting plate is connected through the fixed frame, and the mounting holes on the surface facilitate assembly, installation, and positioning, making it easy to adjust and use. In addition, the snap-fit ​​notch of the right-angle positioning frame can snap and fix the retractable side protective plate to prevent shaking, improve safety and stability, and make it highly adaptable.

[0015] Compared with existing technologies, the advantages of this utility model are:

[0016] (1) This solution connects the movable frame and the tray through a fixed frame, and the side protection plate is installed by hinged flip plate. It can be installed and fixed in combination, which is conducive to telescopic adjustment of position and avoids interference. It can also be flipped and unfolded for coverage and protection. At the same time, the square plug is connected by the positioning cylinder, which can reinforce each other, improve the safety of isolation and protection, facilitate control and use, and is efficient and stable.

[0017] (2) By connecting the right-angle connecting rod and the clamping block with the square plug, the adjacent side protection plates can be combined and positioned to form a stable protective cover for isolation and protection, which is safe, stable and highly adaptable.

[0018] (3) The mounting plate is connected by a fixed frame and the mounting holes on the surface make it easy to assemble, install and position, and adjust and use. In addition, the right-angle positioning bracket is set with a snap-fit ​​notch, which can snap and fix the shrinkable side protection plate to avoid shaking, improve safety and stability, and has high adaptability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a partial structural diagram showing the interconnection of the side protective panels of this utility model;

[0021] Figure 3 This is a partial structural diagram showing the connection between the mounting plate and the right-angle fixing bracket of this utility model.

[0022] Explanation of the labels in the diagram:

[0023] 1. Tunneling machine cutting section, 11. Cutting head, 12. Fixed frame, 13. Moving frame, 14. Support plate, 15. Tilting plate, 16. Hinge shaft, 17. Side protection plate, 18. Positioning cylinder, 19. Square hole, 2. Square insert rod, 21. Right angle connecting rod, 22. Tightening block, 3. Mounting plate, 31. Mounting hole, 32. Right angle positioning frame, 33. Snap-fit ​​notch, 34. Rubber clamping block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1 , Figure 2 and Figure 3A semi-automatic safety protection device for a roadheader cutting head includes a roadheader cutting section 1. A cutting head 11 is fixedly installed at one end of the cutting section 1. A fixed frame 12 is fixedly installed on the upper surface of the cutting section 1. A movable frame 13 is slidably installed inside the fixed frame 12. A support plate 14 is fixedly connected to the inner side of the movable frame 13. A flip plate 15 is hinged to the front end of the support plate 14. Hinges 16 are hinged to three edges of the flip plate 15. A side guard plate 17 is hinged to one side of the hinge 16. The guard plate 17 can be flipped and adjusted to cover and position itself without trial and error. The cutting head 11 can be unfolded and lowered to the side when in use, making it highly adaptable and easy to install and use. The side protective plate 17 surrounds the cutting head on three sides to prevent personnel from accidentally falling and hitting the cutting head, thus protecting personnel safety. The flip plate 15 at the top can prevent falling objects from hitting it, making it highly adaptable. The side protective plate 17 is slidably connected to the outer side of the cutting head 11. The outer surface edge of the side protective plate 17 is provided with a positioning cylinder 18. The inside of the positioning cylinder 18 is provided with a square hole 19. A square rod 2 is slidably inserted into the inside of the square hole 19. The square rod 2 is slidably connected to one side of the outer surface of the side protective plate 17.

[0026] Please see Figure 1 and Figure 2 One end of the square insert rod 2 is fixedly connected to a right-angle connecting rod 21, which is snapped into the corner of the side protection plate 17. Both ends of the right-angle connecting rod 21 are fixedly connected to clamping blocks 22, which are clamped to the outer surface of the side protection plate 17. There are three side protection plates 17, which are connected to the sides of the cutting head 11. The flip plate 15 covers the upper surface of the cutting head 11. By connecting the right-angle connecting rod and the clamping blocks with the square insert rod, adjacent side protection plates can be combined and positioned together. The side protective plate 17 is used for isolation and protection, which is safe, stable and highly adaptable. After unfolding the side protective plate 17, the square insert rod 2 can be inserted into the square hole 19 to connect to the positioning cylinder 18. The right-angle connecting rod 21 can be snapped into the corner position and then combined with the clamping block 22 to clamp and position, increase resistance and assist in reinforcement to prevent it from falling out. This ensures that the side protective plate 17 and the flip plate 15 form a stable protective cover structure, which can be put on the surface of the cutting head 11 to isolate and protect it, thereby improving the safety of use.

[0027] Please see Figure 1 and Figure 3Mounting plates 3 are fixedly connected to both ends of the lower surface of the fixed frame 12. Mounting plates 3 have mounting holes 31 at both ends, which are fixed to the upper surface of the cutting section 1 of the tunneling machine by screws. A right-angle positioning frame 32 is fixed to one end of the mounting plate 3, located at the rear end of the fixed frame 12. A snap-fit ​​notch 33 is provided below the right-angle positioning frame 32, and a rubber clamping block 34 is fixedly attached to the side of the snap-fit ​​notch 33. The mounting plates are connected to the fixed frame, and the mounting holes on the surface facilitate assembly, installation, and positioning, making adjustment and use easier. Furthermore, the snap-fit ​​notch on the right-angle positioning frame allows for the snap-fit ​​fixing of the retractable side protection plate, preventing shaking, improving safety and stability, and offering high adaptability. The side protection plate 17 is folded onto the flip plate 1, and then the entire assembly is flipped onto the upper surface of the tray 14. The surface is positioned, and then the moving frame 13 is controlled to retract along the fixed frame 12 to the rear side. The flip plate 15 can be moved to the right angle positioning frame 32, thereby entering the snap-fit ​​notch 33 position. Combined with the internal rubber clamping block 34 to assist in clamping and positioning, it avoids shaking, is easy to use in combination, and has high adaptability. In addition, it is modified according to the cutting part of the tunneling machine used on site. The cover plate on the cutting part is removed, and the cover plate fixing screw hole is used as the fixing hole. After aligning with the mounting hole 31, the connecting screw is installed and positioned, which is convenient and efficient. Then, the hydraulic power source of the tunneling machine is used to add a set of valve groups or use the extra valve groups on the tunneling machine to connect the telescopic rod, thereby connecting to the rear end position of the moving frame 13. It can extend and retract with the support plate 14, which is convenient to control and use, and is stable and efficient.

[0028] After cutting the coal at the working face, the tunneling machine stops in a suitable position, and after the cutting head 11 is lowered to the ground, the operating valve lever is pulled to extend the telescopic frame; then the tunneling machine is powered off and locked to stop. After stopping, the moving frame 13 is extended forward, and then the personnel flip the flap 15 forward; then the side protective plate 17 is opened to protect the cutting head 11, and the work is completed; when the tunneling machine needs to be used, first the side protective plate is manually retracted onto the flap 15, then the flap 15 is manually flipped back onto the support plate 14, and finally the operating valve lever is pulled to retract the moving frame 13, and the work is completed.

[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A semi-automatic safety protection device for a roadheader cutting head, comprising a roadheader cutting section (1), wherein a cutting head (11) is fixedly installed at one end of the roadheader cutting section (1), characterized in that: A fixed frame (12) is fixedly installed on the upper surface of the cutting section (1) of the tunneling machine. A movable frame (13) is slidably installed inside the fixed frame (12). A support plate (14) is fixedly connected to the inner side of the movable frame (13). A flip plate (15) is hinged to the front end of the support plate (14). A hinge shaft (16) is hinged to the three edges of the flip plate (15). A side protection plate (17) is hinged to one side of the hinge shaft (16). The side protection plate (17) is slidably connected to the outer side of the cutting head (11). A positioning cylinder (18) is provided at the outer edge of the side protection plate (17). A square hole (19) is provided inside the positioning cylinder (18). A square rod (2) is slidably inserted into the square hole (19). The square rod (2) is slidably connected to one side of the outer surface of the side protection plate (17).

2. The semi-automatic safety protection device for the cutting head of a roadheader according to claim 1, characterized in that: One end of the square insert (2) is fixedly connected to a right-angle connecting rod (21), which is snapped into the corner of the side protective plate (17).

3. The semi-automatic safety protection device for the cutting head of a roadheader according to claim 2, characterized in that: The two ends of the right-angle connecting rod (21) are fixedly connected to the side of the clamping block (22), and the clamping block (22) is clamped to the outer surface of the side protection plate (17).

4. The semi-automatic safety protection device for the cutting head of a roadheader according to claim 1, characterized in that: There are three side guard plates (17) connected to the side of the cutting head (11), and the flip plate (15) covers the upper surface of the cutting head (11).

5. A semi-automatic safety protection device for the cutting head of a roadheader according to claim 1, characterized in that: The lower surface of the fixed frame (12) is fixedly connected to the two ends of the mounting plate (3), and the two ends of the mounting plate (3) are provided with mounting holes (31). The mounting holes (31) are fixedly installed on the upper surface of the cutting part (1) of the tunneling machine by screws.

6. A semi-automatic safety protection device for the cutting head of a roadheader according to claim 5, characterized in that: One end of the mounting plate (3) is fixed with a right-angle positioning frame (32), which is located at the rear end of the fixed frame (12).

7. A semi-automatic safety protection device for the cutting head of a roadheader according to claim 6, characterized in that: The right-angle positioning frame (32) has a snap-fit ​​notch (33) at its bottom, and a rubber clamping block (34) is fixedly attached to the side of the snap-fit ​​notch (33).

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