Cutting head protection device

Abstract

The invention discloses a cutting head protection device which comprises a fixing ring, the fixing ring is arranged around the circumferential surface of an output shaft of a heading machine, a circle of annular sliding groove is formed in the outer side face of the fixing ring, a plurality of sliding blocks are slidably connected to the sliding groove, first universal hinge joints are arranged on the outer side faces of the sliding blocks, and second universal hinge joints are arranged on the outer side faces of the first universal hinge joints. The first universal hinge joint is connected with an electric folding rod, a connecting block with a variable shape is arranged on a rod head of the electric folding rod, a first electromagnet is arranged on the surface of the connecting block, the first electromagnets attract each other in an electrified state, and surrounding cloth is connected between every two adjacent electric folding rods. A protective partition is formed by the electric folding rods and the surrounding cloth, when the cutting head rotates, the rod heads of the electric folding rods are gathered, the first electromagnets are attracted together, the cutting head is surrounded by the surrounding cloth, and the electric folding rods can also be folded to a proper degree; and the periphery of the cutting head can be protected when the cutting head works.

Description

Technical Field

[0001] The present invention relates to the technical field of protective devices for construction machinery, and in particular to a cutting head protective device. Background Art

[0002] With the continuous development of coal mine intensification, there are more and more large coal mines, the single mine production capacity is getting larger and larger, the geological conditions and structures are getting more and more complex, and the underground working environment is getting more and more complex. Now, mechanized tunneling has been realized in coal mines, and a large number of equipment such as roadheader are used to complete the tunneling work of roadways.

[0003] During the working process of the roadheader, due to the functions of the roadheader such as moving forward, backward, left and right, the rotation of the cutting head and the swinging left and right, and in addition, there are problems such as narrow space and dim light in the tunneling roadway in the coal mine underground, so there are many safety hazards in the tunneling face. Therefore, some equipment needs to be installed to reduce the safety hazards in the tunneling face.

[0004] At present, after the roadheader completes the tunneling work, the cutting head touches the ground, and the staff begins to enter the heading face for support and bolting work. During the support and anchoring operation, normally the cutting head does not rotate, but if someone makes a misoperation or there is an electrical fault, the cutting head will suddenly rotate. At the same time, the cutting head is a steel structure part with many cutting teeth protrusions installed on it. Once the cutting head rotates or a person collides with it, it will cause fatal injuries to the operating personnel. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a cutting head protective device for the deficiencies in the above-mentioned prior art to solve the problems raised in the above background art.

[0006] To solve the above technical problem, the technical solution adopted by the present invention is: a cutting head protective device, including a fixed ring, the fixed ring is arranged around the circumferential surface of the output shaft of the roadheader, a circular chute is opened on the outer side surface of the fixed ring, a plurality of sliders are respectively slidably connected on the chute, a first universal hinge joint is arranged on the outer side surface of the slider, the first universal hinge joint is connected with an electric folding rod, a connection block with variable shape is arranged at the rod head of the electric folding rod, a first electromagnet is arranged on the surface of the connection block, and each of the first electromagnets is attracted to each other when electrified. A surrounding cloth is connected between the opposite rod surfaces of two adjacent electric folding rods. The protective device further includes a power supply and a processor, the processor is respectively in signal connection with the first electromagnet, the electric folding rod and the first universal hinge joint, and the power supply is respectively in electrical connection with the processor, the first electromagnet, the electric folding rod and the first universal hinge joint;

[0007] When the cutting head of the roadheader needs to be protected, the processor controls the first electromagnet to be energized, and at the same time controls a plurality of the first universal hinge joints and a plurality of the electric folding rods so that the rod heads of the plurality of the electric folding rods converge together; when the cutting head of the roadheader does not need to be protected, the processor controls the first electromagnet to be de-energized, and at the same time controls a plurality of the first universal hinge joints and a plurality of the electric folding rods so that the plurality of the electric folding rods fold and do not block the cutting head.

[0008] Further, the electric folding rod includes a plurality of connecting rods connected end to end in sequence, and adjacent two of the connecting rods are connected by a second universal hinge joint. The free end of the connecting rod at the head end is connected to the first universal hinge joint, and the free end of the connecting rod at the tail end is connected to the connecting block. A surrounding cloth is connected between each connecting rod and the connecting rod adjacent to its rod surface;

[0009] When the processor controls a plurality of the first universal hinge joints and a plurality of the electric folding rods so that the rod heads of the plurality of the electric folding rods converge together, the processor controls each of the second universal hinge joints to rotate to a corresponding set surrounding angle; when the processor controls a plurality of the first universal hinge joints and a plurality of the electric folding rods so that the plurality of the electric folding rods fold and do not block the cutting head, the processor controls each of the second universal hinge joints to rotate to a corresponding set folding angle.

[0010] Furthermore, a connecting cloth is connected between adjacent two of the surrounding cloths.

[0011] Furthermore, sealing cloths are respectively connected to both ends of the connecting rod where the connecting cloth is connected, and the sealing cloths are also connected to the second universal hinge joints.

[0012] Further, connecting grooves are respectively formed on both sides of the rod surface of the electric folding rod along its length direction, an automatic cloth winder is arranged inside the connecting groove, and the surrounding cloth is connected to the reel of the automatic cloth winder.

[0013] Furthermore, the surrounding cloth includes two sub-surrounding cloths detachably connected to each other, and the two sub-surrounding cloths are respectively connected to the reels of the corresponding automatic cloth winders.

[0014] Furthermore, the two sub-surrounding cloths are connected by a second electromagnet, the second electromagnet is respectively arranged on the edges between the two sub-surrounding cloths, the second electromagnet is in signal connection with the processor, and the second electromagnet is electrically connected to the power supply;

[0015] When the electric folding rod is in a folded state, the processor energizes the second electromagnets between the sub-enclosing cloths at the positions to be enclosed, so that two adjacent sub-enclosing cloths are joined together.

[0016] Furthermore, the slider slides on the chute through a driver, the driver is signal-connected to the processor, and the driver is electrically connected to the power supply;

[0017] The processor controls each driver according to the position to be enclosed, so that each slider moves to the corresponding position.

[0018] Further, the connecting block is made of rubber material.

[0019] The present invention has the following advantages compared with the prior art:

[0020] The present invention provides a cutting head protection device. A protective partition is formed by an electric folding rod and an enclosing cloth. When the cutting head rotates, the rod heads of the electric folding rods are aggregated, and at the same time, the first electromagnets are attracted to each other. The cutting head is enclosed by the enclosing cloth. Even during construction, the electric folding rod can be folded to an appropriate degree, and when the cutting head is working, the periphery of the cutting head can be protected; at the same time, the positions of the sliders can be adjusted, and the enclosing cloth can be divided into two interconnected sub-enclosing cloths, so that only part of the cutting head can be blocked, realizing the shielding of the cutting head according to actual needs, thereby ensuring the safety of personnel during construction.

[0021] The technical solution of the present invention will be further described in detail below with reference to the drawings and embodiments. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the overall structure of a cutting head protection device provided by the present invention.

[0023] Figure 2 It is Figure 1 An enlarged view of part A in

[0024] Figure 3 It is a schematic diagram of the unfolded structure of a cutting head protection device provided by the present invention.

[0025] Figure 4 It is Figure 3 An enlarged view of part B in

[0026] Description of the Reference Numerals:

[0027] 1. Cutting head; 2. Output shaft; 3. Fixed ring; 4. Sliding groove; 5. Slide block; 6. First universal hinge joint; 7. Connecting rod; 8. Connecting groove; 9. Second universal hinge joint; 10. Connecting block; 11. First electromagnet; 12. Enclosing cloth; 13. Sealing cloth; 14. Connecting cloth. Detailed implementation manner

[0028] As Figures 1 - 4 As shown in the figure, a cutting head protection device provided by the present invention is characterized in that it includes a fixed ring 3, the fixed ring 3 is arranged around the circumferential surface of the output shaft 2 of the roadheader, a circular sliding groove 4 is opened on the outer side surface of the fixed ring 3, a plurality of slide blocks 4 are respectively slidably connected on the sliding groove 4, a first universal hinge joint 6 is arranged on the outer side surface of the slide block 4, the first universal hinge joint 6 is connected with an electric folding rod, the rod head of the electric folding rod is provided with a connecting block 10 with variable shape, a first electromagnet 11 is arranged on the surface of the connecting block 10, and each of the first electromagnets 11 is mutually attracted when electrified. An enclosing cloth 12 is connected between the opposite rod surfaces of two adjacent electric folding rods. The protection device further includes a power supply and a processor, the processor is respectively in signal connection with the first electromagnet 11, the electric folding rod and the first universal hinge joint 6, and the power supply is respectively in electrical connection with the processor, the first electromagnet 11, the electric folding rod and the first universal hinge joint 6;

[0029] When it is necessary to protect the cutting head 1 of the roadheader, the processor controls the first electromagnet 11 to be electrified, and at the same time controls a plurality of the first universal hinge joints 6 and a plurality of the electric folding rods so that the rod heads of the plurality of electric folding rods converge together; when it is not necessary to protect the cutting head 1 of the roadheader, the processor controls the first electromagnet 11 to be powered off, and at the same time controls a plurality of the first universal hinge joints 6 and a plurality of the electric folding rods so that the plurality of electric folding rods are folded and do not block the cutting head 1.

[0030] The present invention provides a cutting head 1 protection device, which forms a protection partition through the electric folding rod and the enclosing cloth 12. When the cutting head 1 rotates, by making the rod heads of the electric folding rods converge, and at the same time the first electromagnets 11 are mutually attracted together, and the enclosing cloth 12 is used to surround it, so that the cutting head 1 is in a completely enclosed space, and even if it rotates, it will not cause harm to the construction personnel.

[0031] In addition, even during construction, it is necessary to block the cutting head 1, and the electric folding rod can be folded to an appropriate degree. For example, Figure 1The three-section electric folding rod extending in sequence can be folded to the length of only one section, so that the surrounding cloth 12 will only surround the range of one section length, which can protect the surrounding of the cutting head 1 when the cutting head 1 works.

[0032] At the same time, since the first universal hinge joint 6 can change the angle between the electric folding rod and the output shaft 2, the state of the device of the present invention can be controlled. For example, when the electric folding rod is Figure 1 below the cutting head 1, it means there is no protective effect.

[0033] In the present invention, the surrounding cloth 12 is made of a flexible material and has a high toughness. At the same time, the main function of the processor of the present invention is to control the work of the components. It can also be connected to an external terminal and control the work of the components according to the control of the terminal. That is to say, the states of the various components of the present invention and the overall state of the device are determined according to the control of the construction personnel.

[0034] In the present invention, we further limit the electric folding rod. In practice, including but not limited to the set range given in the present invention, the electric folding rod includes a plurality of connecting rods 7 connected end to end in sequence. Adjacent two of the connecting rods 7 are connected by a second universal hinge joint 9. The free end of the connecting rod 7 at the head end is connected to the first universal hinge joint 6, and the free end of the connecting rod 7 at the tail end is connected to the connecting block 10. A surrounding cloth 12 is connected between each connecting rod 7 and the connecting rod 7 adjacent to its rod surface;

[0035] When the processor controls the plurality of first universal hinge joints 6 and the plurality of electric folding rods so that the rod heads of the plurality of electric folding rods converge together, that is, in the closed state, the processor controls each second universal hinge joint 9 to rotate to the corresponding set surrounding angle; when the processor controls the plurality of first universal hinge joints 6 and the plurality of electric folding rods so that the plurality of electric folding rods are folded and do not block the cutting head 1, that is, in the folded state, the processor controls each second universal hinge joint 9 to rotate to the corresponding set folding angle.

[0036] The states of the electric folding rod generally include three types: closed, open, and folded. Closed means that the rod heads of the electric folding rods converge together. Open means that the size of the electric folding rod is folded to the set size. Folded means that the electric folding rod is adjusted to the shortest size.

[0037] In the present invention, the folding angle is generally 180 degrees, which means that the two connecting rods 7 are fitted together, and the surrounding angle is generally determined according to the number of the connecting rods 7 and the size of the cutting head 1, referring to the included angle between the two connecting rods 7. Since the open state is not common, there is not much description involved in the present invention. In the open state, a part of the second universal hinge joints 9 is at the surrounding angle, and another part of the second universal hinge joints 9 is at the folding angle.

[0038] Among them, in order to achieve a better surrounding and protecting effect, a connecting cloth 14 is connected between two adjacent surrounding cloths 12. Further, the connecting cloth 14 is respectively connected with a sealing cloth 13 at both ends of the connecting rod 7, and the sealing cloth 13 is also connected to the second universal hinge joint 9. Among them, consistent with the flexible material of the surrounding cloth 12, the connecting cloth 14 and the sealing cloth 13 are also of the same flexible material and the same material as the surrounding cloth 12.

[0039] In the present invention, for further optimization of the above technology, connection grooves 8 are respectively opened on both sides of the rod surface of the electric folding rod along its length direction, and an automatic cloth winder is arranged inside the connection grooves 8, and the surrounding cloth 12 is connected to the reel of the automatic cloth winder. The automatic cloth winder can automatically wind the cloth to complete the storage of the cloth, and being arranged in the connection grooves 8 does not occupy external space.

[0040] At the same time, in order to achieve partial shielding in the present invention, the surrounding cloth 12 includes two sub-surrounding cloths that are detachably connected to each other, and the two sub-surrounding cloths are respectively connected to the reels of the corresponding automatic cloth winders. For further limitation of the detachable connection, in the present invention, the two sub-surrounding cloths are connected by second electromagnets, the second electromagnets are respectively arranged on the edges between the two sub-surrounding cloths, the second electromagnets are in signal connection with the processor, and the second electromagnets are electrically connected to the power supply; the processor energizes the second electromagnets between the sub-surrounding cloths at the position to be surrounded in the state where the electric folding rod is folded, so that the adjacent two sub-surrounding cloths are in contact with each other. During construction, in some places where it is needed, partial shielding can be achieved, but such a shielding method is still limited by the rod body of the electric folding rod.

[0041] Therefore, the present invention optimizes the position of the slider 4. By adjusting the position of the slider, all the sliders 4 can be concentrated in a semi-circle or a set arc area, so as to form partial protection for the peripheral area of the cutting head 1, which is applicable to a wider range of construction situations.

[0042] In the present invention, the slider 4 slides on the chute 4 through a driver, the driver is signal-connected to the processor, and the driver is electrically connected to the power supply; the processor controls each driver according to the position to be surrounded so that each slider 4 moves to the corresponding position.

[0043] By adjusting the positions of the respective sliders 4, the surrounding cloth 12 can be divided into two interconnected sub-surrounding cloths, so that only a part of the cutting head 1 is blocked, realizing the blocking of the cutting head according to actual needs, thereby ensuring the safety of personnel during construction.

[0044] In addition, the connecting block 10 is made of rubber material. This can ensure that the top area is completely sealed in the closed state, ensuring the safety of construction workers.

[0045] The above are only the preferred embodiments of the present invention, and do not impose any limitations on the present invention. Any simple modifications, changes, and equivalent structural changes made to the above embodiments according to the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A cutting head protection device, characterized in that: The invention comprises a fixing ring (3), wherein the fixing ring (3) is arranged around the circumferential surface of the output shaft (2) of the tunnel boring machine, wherein an annular sliding groove (4) is provided on the outer surface of the fixing ring (3), wherein a plurality of sliding blocks (4) are slidably connected to the sliding groove (4), wherein a first universal joint (6) is arranged on the outer surface of the sliding block (4), wherein the first universal joint (6) is connected to an electric folding rod, wherein a shape-variable connecting block (10) is arranged on the rod head of the electric folding rod, wherein a first electromagnet (11) is arranged on the surface of the connecting block (10), wherein each of the first electromagnets (11) attracts each other when powered on, and a surrounding cloth (12) is connected between the opposite rod surfaces of two adjacent electric folding rods, wherein the protective device further comprises a power supply and a processor, wherein the processor is respectively connected to the first electromagnet (11), the electric folding rod and the first universal joint (6) by signals, and wherein the power supply is respectively electrically connected to the processor, the first electromagnet (11), the electric folding rod and the first universal joint (6); When the cutting head (1) of the tunnel boring machine needs to be protected, the processor controls the first electromagnet (11) to be energized, and simultaneously controls the plurality of the first universal joints (6) and the plurality of the electric folding rods so that the rod heads of the plurality of the electric folding rods converge together; when the cutting head (1) of the tunnel boring machine does not need to be protected, the processor controls the first electromagnet (11) to be de-energized, and simultaneously controls the plurality of the first universal joints (6) and the plurality of the electric folding rods so that the plurality of the electric folding rods are folded and do not block the cutting head (1).

2. A cutting head protection device according to claim 1, characterized in that: The electric folding rod comprises a plurality of connecting rods (7) connected end to end in sequence, two adjacent connecting rods (7) are connected via a second universal joint (9), the free end of the connecting rod (7) at the head end is connected to the first universal joint (6), the free end of the connecting rod (7) at the tail end is connected to the connecting block (10), and the surrounding cloth (12) is connected between each connecting rod (7) and the connecting rod (7) adjacent to the rod surface; When the processor controls the plurality of first universal joints (6) and the plurality of electric folding rods so that the rod heads of the plurality of electric folding rods converge together, the processor controls each of the second universal joints (9) to rotate to a corresponding set encirclement angle; when the processor controls the plurality of first universal joints (6) and the plurality of electric folding rods so that the plurality of electric folding rods are folded and do not block the cutting head (1), the processor controls each of the second universal joints (9) to rotate to a corresponding set folding angle.

3. A cutting head protection device according to claim 2, characterized in that: A connecting cloth (14) is connected between two adjacent surrounding cloths (12).

4. A cutting head protection device according to claim 3, characterized in that: The two ends of the connecting cloth (14) connected to the connecting rod (7) are respectively connected to sealing cloth (13), and the sealing cloth (13) is also connected to the second universal joint (9).

5. A cutting head protection device according to claim 1, characterized in that: The two sides of the rod surface of the electric folding rod are respectively provided with connection grooves (8) along the length direction thereof, and an automatic cloth reel is arranged inside the connection groove (8), and the surrounding cloth (12) is connected to the reel of the automatic cloth reel.

6. A cutting head protection device according to claim 5, characterized in that: The surrounding cloth (12) comprises two sub-surrounding cloths which are detachably connected to each other, and the two sub-surrounding cloths are respectively connected to the corresponding reels of the automatic cloth reel.

7. A cutting head protection device according to claim 6, characterized in that: The two sub-enclosing cloths are connected via a second electromagnet, the second electromagnet is respectively arranged on the edge between the two sub-enclosing cloths, the second electromagnet is connected to the processor signal, and the second electromagnet is electrically connected to the power supply; The processor energizes the second electromagnets between the sub-encircling cloths at the positions to be surrounded when the electric folding rod is folded, so that two adjacent sub-encircling cloths are in contact with each other.

8. A cutting head protection device according to claim 7, characterized in that: The slider (4) slides on the slide groove (4) through a driver, the driver is connected to the processor signal, and the driver is electrically connected to the power supply; The processor controls each of the drivers according to the position to be surrounded so that each of the sliders (4) moves to a corresponding position.

9. A cutting head protection device according to claim 1, characterized in that: The connecting block (10) is made of rubber.

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