Protective device for cutting head of heading machine

Abstract

The utility model relates to the field of heading machine protection, in particular to a heading machine cutting head protection device which comprises a machine body and is characterized in that a first circular groove is formed in the machine body, containing grooves are formed in the periphery of the interior of the machine body, and first pass-stop holes are formed in the periphery of the inner wall of the first circular groove; the machine body is internally provided with an annular groove, the annular groove is located at the rear ends of the multiple storage grooves, the ends, close to the axis, of the interiors of the storage grooves are provided with multiple first through-stop holes, the ends, away from the axis, of the interiors of the storage grooves are provided with multiple second through-stop holes, and the interiors of the multiple storage grooves are movably connected with a protection assembly. And the protection assembly comprises a protection cylinder movably connected to the interior of the storage groove, and an operator cannot make contact with the exposed cutting head in the shutdown state of the heading machine, so that the purpose of protecting the operator is achieved, the cutting head of the heading machine is effectively protected, and the service life of equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of roadheader protection, in particular to a protection device for the cutting head of a roadheader. Background Art

[0002] A roadheader is a machine used to excavate roadways under flat ground. There are various types of roadheaders: classified by the operation object, it can be divided into ordinary machinery and tunnel boring machines; classified by the operation method, it can be divided into open-type roadheaders and shield-type roadheaders. The working mode of a roadheader mainly consists of a traveling mechanism, a working mechanism, a loading and transporting mechanism, and a transfer mechanism. As the traveling mechanism advances forward, the cutting head in the working mechanism continuously breaks rocks and transports the broken rocks away. It has the advantages of safety, high efficiency, and good roadway forming quality, but has a high cost, complex structure, and large losses.

[0003] The cutting head of a roadheader is an important working component used to strip coal and rock in the roadheader. It mainly undertakes the cutting action on coal seams or rocks during coal mine or tunnel excavation. Through mechanical force, it realizes the cutting and fragmentation of coal and rock, and finally transports the fragmented materials out of the working face. The efficiency of a roadheader depends to a large extent on the performance of the cutting head. Therefore, there are very high requirements for the design and manufacture of the cutting head.

[0004] In the existing technical solutions, the cutting head at the front end of the roadheader is usually exposed in the non-working state. This leads to the overheating of the cutting head after the roadheader finishes working. When the operator accidentally touches the cutting head, it will cause harm to the physical and mental health of the operator, thus affecting the work of the roadheader.

[0005] Therefore, a protection device for the cutting head of a roadheader is proposed. Summary of the Invention

[0006] The purpose of the utility model is to provide a protection device for the cutting head of a roadheader, which can prevent the operator from contacting the exposed cutting head in the shutdown state of the roadheader, so as to achieve the purpose of protecting the operator, and then effectively protect the cutting head of the roadheader and improve the service life of the equipment, so as to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A protection device for the cutting head of a roadheader, including a machine body. A first circular groove is opened inside the machine body. Receiving grooves are opened on the periphery of the inside of the machine body. First through-stop holes are opened on the periphery of the inner wall of the first circular groove. A ring groove is opened inside the machine body, and the ring groove is located at the rear end of a plurality of the receiving grooves. The first through-stop holes penetrate into the inside of the receiving grooves. A plurality of second through-stop holes are opened at one end of the inside of the receiving groove away from the axis. A protection component is movably connected inside a plurality of the receiving grooves;

[0008] The protection component includes a protective cylinder movably connected inside the storage groove. A second spring is movably connected to the rear end of the protective cylinder. A plurality of bumps are fixedly connected to the inner wall of the protective cylinder. The protection component further includes a plurality of first movable cavities opened at the front end inside the machine body. A counterweight rod is movably connected inside each of the plurality of first movable cavities, and the counterweight rod passes through the first through-hole to the inside of the storage groove. A plurality of sliding grooves are opened at one end close to the axis inside the storage groove.

[0009] Preferably, a plurality of fixing blocks are fixedly connected to the front end of the outside of the machine body. A sliding rod is movably connected inside each of the plurality of fixing blocks, and a first spring is movably connected between the outside of each of the plurality of sliding rods and the outside of each of the plurality of counterweight rods. The sliding rod passes through the second through-hole to the inside of the storage groove.

[0010] Preferably, a plurality of bases are uniformly fixedly connected to the outside of the machine body. A fan is movably connected inside each of the plurality of bases, and a third spring is movably connected between each of the plurality of fans and the machine body.

[0011] Preferably, a circular ring is movably connected inside the annular groove. A cylinder is fixedly connected to the rear end of the circular ring. A second circular groove is opened inside the cylinder. A mounting bracket is fixedly connected to the rear end of the cylinder. A plurality of clamping grooves are uniformly opened inside the mounting bracket. A filter plate is movably connected inside each of the plurality of clamping grooves.

[0012] Preferably, the protective cylinder and the storage groove are slidably fitted. The inner diameter of the protective cylinder is larger than the outer diameter of the cutting head of the device. The bump and the sliding groove are slidably fitted.

[0013] Preferably, the elastic forces of the plurality of first springs are respectively greater than the resistances suffered by the counterweight rod and the sliding rod, and the elastic force of the second spring is greater than the resistance suffered by the protective cylinder.

[0014] Preferably, the elastic forces of the plurality of third springs are respectively greater than the weights of the plurality of fans, and the fan can be turned 90 degrees through the base.

[0015] Preferably, the inner diameter of the second circular groove is larger than the inner diameter of the first circular groove, and the diameter of the circular ring is smaller than the inner diameter of the annular groove.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] 1. For this roadheader cutting head protection device, by setting the protection component, when the roadheader is in a shutdown state, operators cannot contact the exposed cutting head, thereby achieving the purpose of protecting operators, and further effectively protecting the roadheader cutting head and increasing the service life of the equipment;

[0018] 2. The cutting head protection device of the roadheader can adsorb and clean the dust generated during the operation of the roadheader by installing components such as fixing blocks, fans, springs, cylinders, and second circular grooves, thereby avoiding health hazards to the staff and ensuring the safety and efficiency of the roadheader's work activities. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is the overall structural view of the present invention;

[0021] Figure 2 is the schematic diagram of the partial half-sectional structure of the present invention;

[0022] Figure 3 is the schematic diagram of the protection component structure of the present invention;

[0023] Figure 4 is the Figure 2 enlarged view of A in the present invention.

[0024] Description of the reference numerals in the drawings:

[0025] 1. Body; 11. First circular groove; 12. Receiving groove; 13. First through-hole and stop hole; 14. Ring groove; 15. Second through-hole and stop hole; 2. Protection component; 21. Cylinder; 211. Protrusion; 22. First movable cavity; 23. Counterweight rod; 231. First spring; 24. Slide groove; 25. Second spring; 3. Fixing block; 31. Slide rod; 4. Base; 41. Fan; 42. Third spring; 5. Cylinder; 51. Second circular groove; 52. Ring; 53. Mounting bracket; 531. Clamping groove; 54. Filter plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0027] Please refer to Figure 1 and Figure 4 , the present invention provides a technical solution:

[0028] The cutting head protection device of a roadheader includes a machine body 1. A first circular groove 11 is formed inside the machine body 1. Receiving grooves 12 are formed around the inner periphery of the machine body 1. First through-stop holes 13 are formed around the inner wall of the first circular groove 11. An annular groove 14 is formed inside the machine body 1, and the annular groove 14 is located at the rear end of the plurality of receiving grooves 12. A plurality of first through-stop holes 13 are formed at one end close to the axis inside the receiving groove 12, and the first through-stop holes 13 penetrate into the inside of the receiving groove 12. A plurality of second through-stop holes 15 are formed at one end far from the axis inside the receiving groove 12. A protection component 2 is movably connected inside the plurality of receiving grooves 12. The protection component 2 includes a protection cylinder 21 movably connected inside the receiving groove 12. A second spring 25 is movably connected to the rear end of the protection cylinder 21. A plurality of bumps 211 are fixedly connected to the inner wall of the protection cylinder 21. The protection component 2 further includes a plurality of first moving cavities 22 formed at the front end inside the machine body 1. A counterweight rod 23 is movably connected inside each of the plurality of first moving cavities 22, and the counterweight rod 23 passes through the first through-stop holes 13 into the inside of the receiving groove 12. A plurality of sliding grooves 24 are formed at one end close to the axis inside the receiving groove 12;

[0029] A plurality of fixing blocks 3 are fixedly connected to the front end of the machine body 1. A sliding rod 31 is movably connected inside each of the plurality of fixing blocks 3. A first spring 231 is movably connected between the outer parts of the plurality of sliding rods 31 and the outer parts of the plurality of counterweight rods 23. The sliding rod 31 passes through the inside of the receiving groove 12 through the second through-stop holes 15. The protection cylinder 21 and the receiving groove 12 are in sliding fit. The inner diameter of the protection cylinder 21 is larger than the outer diameter of the cutting head of the device. The bumps 211 and the sliding grooves 24 are in sliding fit. The elastic forces of the plurality of first springs 231 are respectively greater than the resistances received by the counterweight rod 23 and the sliding rod 31. The elastic force of the second spring 25 is greater than the resistance received by the protection cylinder 21.

[0030] By adopting the above technical solution, before the roadheader works, the body 1 at the front end of the device is fixedly attached to the output shaft of the roadheader through the first circular groove 11. It should be noted that multiple fixing blocks 3 and components outside the body 1 are all located at the rear end of multiple first moving chambers 22. When the roadheader is started, the output shaft of the roadheader rotates and drives the body 1 and external components to rotate. At this time, the centrifugal force generated by the rotation of the counterweight rods 23 inside the multiple first moving chambers 22 is greater than the elastic force of the first springs 231 inside the first moving chambers 22, causing the multiple counterweight rods 23 to move towards the end far from the axis, and the counterweight rods 23 pass through the first through-holes 13. At this time, the protective cylinder 21 inside the receiving groove 12 is restricted by the counterweight rods 23, thereby preventing the protective cylinder 21 from moving forward along the receiving groove 12. When the roadheader finishes working and the output shaft stops rotating, at this time, the counterweight rods 23 inside the multiple first moving chambers 22 move towards the end close to the axis under the action of the elastic force of the first springs 231. At this time, the protective cylinder 21 inside the receiving groove 12 moves towards the front end of the receiving groove 12 through the cooperation between the convex blocks 211 and the sliding grooves 24 under the elastic force of the second spring 25, so that the protective cylinder 21 completely covers the cutting head of the device, thereby preventing the operator from touching the just-worked cutting head and avoiding being scalded or scratched by the high-temperature cutting head. When tunneling work needs to be carried out, the protective cylinder 21 is pushed back into the receiving groove 12 by hand. When the protective cylinder 21 is completely pushed back into the receiving groove 12, the sliding rods 31 inside the multiple fixing blocks 3 move into the receiving groove 12 through the second through-holes 15 under the elastic force of the first springs 231, thereby preventing the protective cylinder 21 from extending towards the front end of the receiving groove 12 under the influence of the elastic force of the second spring 25. When tunneling work is carried out again, the roadheader is started, and the output shaft of the roadheader drives the body 1 to rotate. At this time, the sliding rods 31 inside the multiple fixing blocks 3 outside the body 1 move towards the end far from the axis under the influence of the centrifugal force generated by the rotation, so as to facilitate the next extension of the protective cylinder 21 for protection work. Furthermore, by extending the protective cylinder 21 to wrap the cutting head of the roadheader, it can be achieved that when the roadheader is in a stopped state, the operator cannot touch the exposed cutting head, thereby achieving the purpose of protecting the operator, and further effectively protecting the cutting head of the roadheader and improving the service life of the equipment.

[0031] Specifically, such as Figure 2 And Figure 3As shown in the figure, a plurality of bases 4 are evenly and fixedly connected to the outside of the machine body 1. A fan 41 is movably connected inside each of the plurality of bases 4. A third spring 42 is movably connected between the plurality of fans 41 and the machine body 1. A ring 52 is movably connected inside the annular groove 14. The rear end of the ring 52 is fixedly connected to a cylinder 5. A second circular groove 51 is provided inside the cylinder 5. The rear end of the cylinder 5 is fixedly connected to a mounting bracket 53. A plurality of clamping grooves 531 are evenly provided inside the mounting bracket 53. A filter plate 54 is movably connected inside each of the plurality of clamping grooves 531. The elastic force of each of the plurality of third springs 42 is greater than the gravity of each of the plurality of fans 41. The fan 41 can be turned 90 degrees through the base 4. The inner diameter of the second circular groove 51 is greater than the inner diameter of the first circular groove 11. The diameter of the ring 52 is smaller than the inner diameter of the annular groove 14.

[0032] By adopting the above technical solution, the cylinder 5 is fixed on the roadheader, so that the cylinder 5 and its components are fixed and immovable when the output shaft rotates. First, when the roadheader is started, the output shaft of the roadheader rotates and drives the machine body 1 to rotate. The rotation of the machine body 1 drives the base 4 and the fan 41 to rotate. When all the plurality of fans 41 rotate, when the centrifugal force generated by the fan 41 during rotation is greater than the third spring 42 at the rear end of the plurality of fans 41, at this time, the fan 41 rotates 90 degrees with the base 4 as the axis. When the plurality of fans 41 rotate continuously, the air flow at the rear ends of the plurality of fans 41 is reduced, and a negative pressure is formed, sucking the dust generated by the drilling of the cutting head of the roadheader to the rear ends of the plurality of fans 41. When the dust sucked to the rear ends of the plurality of fans 41 contacts the filter plate 54 inside the plurality of clamping grooves 531, the dust is adsorbed by the filter plate 54, so as to adsorb and clean the dust generated when the roadheader is working, thereby avoiding health hazards to the staff and ensuring the safety and high efficiency of the roadheader's working activities.

[0033] Working principle: When the roadheader is started, the output shaft of the roadheader rotates and drives the body 1 and the external components to rotate. At this time, the centrifugal force generated by the rotation of the counterweight rods 23 inside the multiple first moving chambers 22 is greater than the elastic force of the first springs 231 inside the first moving chambers 22, causing the multiple counterweight rods 23 to move towards the end far from the axis. That is, the counterweight rods 23 pass through the first through-hole 13. At this time, the casing 21 inside the receiving groove 12 is restricted by the counterweight rods 23, thereby preventing the casing 21 from moving forward along the receiving groove 12. When the roadheader finishes working and the output shaft stops rotating, at this time, the counterweight rods 23 inside the multiple first moving chambers 22 move towards the end close to the axis under the elastic force of the first springs 231. At this time, the casing 21 inside the receiving groove 12 moves towards the front end of the receiving groove 12 through the cooperation between the convex blocks 211 and the sliding grooves 24 under the elastic force of the second spring 25, so that the casing 21 completely covers the cutting head of the device, thereby preventing operators from touching the just-worked cutting head and avoiding being scalded or scratched by the high-temperature cutting head.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. Roadheader cutting head protection device, including a machine body (1), characterized in that: Inside the body (1), a first circular groove (11) is provided. Storage grooves (12) are provided around the inner circumference of the body (1). First through-stop holes (13) are provided around the inner wall of the first circular groove (11). A ring groove (14) is provided inside the body (1), and the ring groove (14) is located at the rear end of the plurality of storage grooves (12). The first through-stop holes (13) penetrate into the interior of the storage grooves (12). At the end of the interior of the storage groove (12) away from the axis, a plurality of second through-stop holes (15) are provided. A protective component (2) is movably connected inside the plurality of storage grooves (12). The protective component (2) includes a protective cylinder (21) movably connected inside the storage groove (12). A second spring (25) is movably connected to the rear end of the protective cylinder (21). A plurality of convex blocks (211) are fixedly connected to the inner wall of the protective cylinder (21). The protective component (2) further includes a plurality of first moving chambers (22) provided at the front end inside the body (1). A counterweight rod (23) is movably connected inside each of the plurality of first moving chambers (22), and the counterweight rod (23) passes through the first through-stop hole (13) into the interior of the storage groove (12). A plurality of sliding grooves (24) are provided at the end of the interior of the storage groove (12) close to the axis.

2. The cutting head protection device of the roadheader according to claim 1, wherein: A plurality of fixing blocks (3) are fixedly connected to the front end of the exterior of the body (1). A sliding rod (31) is movably connected inside each of the plurality of fixing blocks (3). A first spring (231) is movably connected between the outer portions of the plurality of sliding rods (31) and the outer portions of the plurality of counterweight rods (23). The sliding rod (31) passes through the second through-stop hole (15) into the interior of the storage groove (12).

3. The roadheader cutting head protection device according to claim 1, characterized in that: A plurality of bases (4) are uniformly fixedly connected to the exterior of the body (1). A fan (41) is movably connected inside each of the plurality of bases (4). A third spring (42) is movably connected between the plurality of fans (41) and the body (1).

4. The cutting head protection device of the roadheader according to claim 1, wherein: A ring (52) is movably connected inside the ring groove (14). A cylinder (5) is fixedly connected to the rear end of the ring (52). A second circular groove (51) is provided inside the cylinder (5). An installation frame (53) is fixedly connected to the rear end of the cylinder (5). A plurality of clamping grooves (531) are uniformly provided inside the installation frame (53). A filter plate (54) is movably connected inside each of the plurality of clamping grooves (531).

5. The cutting head protection device of the roadheader according to claim 4, characterized in that: The protective cylinder (21) and the storage groove (12) are slidably fitted. The inner diameter of the protective cylinder (21) is greater than the outer diameter of the cutting head of the device. The convex block (211) and the sliding groove (24) are slidably fitted.

6. The cutting head protection device of the roadheader according to claim 2, characterized in that: The elastic forces of the plurality of first springs (231) are respectively greater than the resistances received by the counterweight rod (23) and the sliding rod (31). The elastic force of the second spring (25) is greater than the resistance received by the protective cylinder (21).

7. The roadheader cutting head protection device according to claim 3, characterized in that: The elastic forces of the plurality of third springs (42) are respectively greater than the weights received by the plurality of fans (41). The fan (41) can be turned 90 degrees through the base (4).

8. The cutting head protection device of the roadheader according to claim 4, characterized in that: The inner diameter of the second circular groove (51) is larger than that of the first circular groove (11), and the diameter of the circular ring (52) is smaller than the inner diameter of the annular groove (14).

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