Threaded chip removal type coal cutting pick

Abstract

The utility model discloses a threaded chip removal type coal cutting pick which comprises a cutting pick smooth handle, and the upper end of the cutting pick smooth handle is fixedly connected with a cutting pick threaded handle. The upper end of the cutting tooth threaded handle is fixedly connected with a coal cutting tooth head, the upper side wall of the coal cutting tooth head is fixedly connected with three matching protrusions, the coal cutting tooth head is movably connected with a wear-resisting head through the matching protrusions, the lower side wall of the cutting tooth smooth handle is fixedly connected with a cutting tooth seat, and the wear-resisting head is movably connected with a wear-resisting head through the matching protrusions. Matched inner grooves are formed in the cutting tooth threaded handle, the cutting tooth smooth handle and the coal cutting tooth head; the lower side wall of the wear-resistant head is fixedly connected with a sealing seat, and the lower side wall of the sealing seat is fixedly connected with a threaded sleeve. According to the coal cutting pick, the connection stability of the coal cutting pick head and the wear-resistant head can be effectively improved through the matching of the matching bulge and the matching groove, the replacement efficiency and the installation efficiency of the wear-resistant head can be effectively improved through the arrangement of the fixing screw rod, and the service life of the device can be effectively prolonged through the combination of the three parts.

Description

Technical Field

[0001] The utility model relates to the technical field of coal picks, in particular to a threaded chip - discharging coal pick. Background Art

[0002] A coal pick is a high - quality tungsten carbide pick specially used for coal shearers. It is made by a series of metallurgical powder processes such as mixing tungsten carbide and cobalt powder and ball milling, pressing and sintering. It has the characteristics of high strength, good wear resistance and long service life, and is widely used in various coal shearers and roadheaders for projects such as roadways, tunnels and surface trenching. Currently, the common threaded chip - discharging coal pick mainly consists of a shank part and a bit head structure. The bit head is provided with chip - discharging grooves for guiding and discharging debris, and the bit head is set in a tower shape.

[0003] Since the wear - resistant layer is fixed on the top of the bit head, during long - term use, the wear - resistant layer will be worn off first, and the wear rate of the coal pick will increase. At this time, the coal pick needs to be replaced as a whole, resulting in a short service life. Summary of the Utility Model

[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art, and provide a threaded chip - discharging coal pick. The device is provided with a wear - resistant head, a fixing screw and a mating convex. The cooperation between the mating convex and the mating groove can effectively improve the connection stability between the coal pick head and the wear - resistant head. The setting of the fixing screw can effectively improve the replacement efficiency and installation efficiency of the wear - resistant head. The combination of the three can effectively improve the service life of the device;

[0005] The device is provided with a sealing seat and chip - discharging grooves. The setting of the sealing seat and the sealing groove can effectively improve the sealing effect between the coal pick head and the wear - resistant head, preventing external waste chips from entering the device. The setting of the chip - discharging grooves can effectively accelerate the discharge of waste chips generated during the working hours of the device, improving the production efficiency of the device.

[0006] The utility model also provides a threaded chip - discharging coal pick as described above, including: a pick shank, the upper end of the pick shank is fixedly connected with a pick threaded shank, the upper end of the pick threaded shank is fixedly connected with a coal pick head, three mating convexes are fixedly connected to the upper side wall of the coal pick head, the coal pick head is movably connected with a wear - resistant head through the mating convexes, the lower side wall of the pick shank is fixedly connected with a pick seat, and a mating inner groove is arranged inside the pick threaded shank, the pick shank and the coal pick head;

[0007] The lower side wall of the wear - resistant head is fixedly connected with a sealing seat, the lower side wall of the sealing seat is fixedly connected with a threaded sleeve, the threaded sleeve is matched with a fixing screw, the lower side wall of the pick seat is rotatably connected with a rotating seat, and the lower end of the fixing screw is fixedly connected with a fixing cap.

[0008] According to the described screw chip - discharging coal pick, chip - discharging grooves are provided on the outer side walls of both the coal pick head and the wear - resistant head, and the chip - discharging grooves on the outer side walls of the coal pick head and the wear - resistant head cooperate with each other to facilitate the discharge of waste chips generated during the operation of the coal pick.

[0009] According to the described screw chip - discharging coal pick, three mating grooves are provided on the lower side wall of the wear - resistant head, and the mating grooves cooperate with the mating protrusions, which can effectively improve the radial stability between the wear - resistant head and the coal pick head.

[0010] According to the described screw chip - discharging coal pick, a sealing groove is provided in the middle of the upper side wall of the coal pick head, and the sealing groove cooperates with the sealing seat to improve the sealing performance of the connection between the coal pick head and the wear - resistant head.

[0011] According to the described screw chip - discharging coal pick, a stepped seat is fixedly connected to the outer side wall of the coal pick head and close to the lower end.

[0012] According to the described screw chip - discharging coal pick, the rotating seat cooperates with the fixing cap, which can effectively reduce the frictional loss of the fixing cap on the pick holder when the fixing cap rotates.

[0013] According to the described screw chip - discharging coal pick, the coal pick head and the wear - resistant head can form a conical shape to improve the working effect of the device.

[0014] According to the described screw chip - discharging coal pick, the length of the pick screw shank is equal to the combined length of the coal pick head and the wear - resistant head.

[0015] Additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following further illustrates the present utility model in conjunction with the drawings and embodiments;

[0017] Figure 1 is a schematic structural view of a screw chip - discharging coal pick of the present utility model;

[0018] Figure 2 is a schematic structural view of the wear - resistant head of a screw chip - discharging coal pick of the present utility model;

[0019] Figure 3 is an internal schematic view of a screw chip - discharging coal pick of the present utility model;

[0020] Figure 4 is a sectional view schematic of a screw chip - discharging coal pick of the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Pick tooth thread shank; 2. Pick tooth smooth shank; 201. Pick tooth seat; 3. Coal pick tooth head; 301. Step platform seat; 302. Chip removal groove; 303. Fitting convex; 304. Sealing groove; 4. Wear-resistant head; 401. Fitting groove; 402. Sealing seat; 403. Thread sleeve; 5. Fixing cap; 501. Fixing screw. Specific embodiments

[0023] This part will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the drawings. The function of the drawings is to supplement the description of the text part of the specification, enabling people to intuitively and vividly understand each technical feature and the overall technical solution of the present invention, but it should not be construed as a limitation on the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation on the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

[0025] Referring to Figures 1-4 , an embodiment of the present invention is a threaded chip-removing coal pick tooth, which includes: a pick tooth smooth shank 2, and a pick tooth thread shank 1 is fixedly connected to the upper end of the pick tooth smooth shank 2. A coal pick tooth head 3 is fixedly connected to the upper end of the pick tooth thread shank 1. Chip removal grooves 302 are provided on the outer side walls of the coal pick tooth head 3 and the wear-resistant head 4. The chip removal grooves 302 on the outer side walls of the coal pick tooth head 3 and the wear-resistant head 4 cooperate with each other to facilitate the discharge of waste chips generated during the operation of the coal pick tooth. A step platform seat 301 is fixedly connected to the outer side wall of the coal pick tooth head 3 and near the lower end.

[0026] Three mating protrusions 303 are fixedly connected to the upper side wall of the coal cutting bit head 3. The coal cutting bit head 3 is movably connected to the wear-resistant head 4 through the mating protrusions 303. Three mating grooves 401 are provided on the lower side wall of the wear-resistant head 4. The mating grooves 401 cooperate with the mating protrusions 303, which can effectively improve the radial stability between the wear-resistant head 4 and the coal cutting bit head 3.

[0027] A cutting bit seat 201 is fixedly connected to the lower side wall of the cutting bit smooth shank 2. A mating inner groove 202 is provided inside the cutting bit threaded shank 1, the cutting bit smooth shank 2, and the coal cutting bit head 3. The length of the cutting bit threaded shank 1 is equal to the combined length of the coal cutting bit head 3 and the wear-resistant head 4.

[0028] A sealing seat 402 is fixedly connected to the lower side wall of the wear-resistant head 4. A sealing groove 304 is provided in the middle of the upper side wall of the coal cutting bit head 3. The sealing groove 304 cooperates with the sealing seat 402 to improve the sealing performance of the connection between the coal cutting bit head 3 and the wear-resistant head 4. The coal cutting bit head 3 and the wear-resistant head 4 can form a conical shape to improve the working effect of the device.

[0029] A threaded sleeve 403 is fixedly connected to the lower side wall of the sealing seat 402. The threaded sleeve 403 cooperates with the fixing screw 501. A rotating seat 203 is rotatably connected to the lower side wall of the cutting bit seat 201. The lower end of the fixing screw 501 is fixedly connected to a fixing cap 5. The rotating seat 203 cooperates with the fixing cap 5, effectively reducing the frictional loss of the fixing cap 5 on the cutting bit seat 201 when it rotates.

[0030] All the electrical components mentioned in this article are electrically connected to an external main controller, and the main controller can be a conventional known device such as a computer for control. All the electrical components mentioned in this article are electrically connected to an external power supply.

[0031] Working principle: The device is provided with a wear-resistant head 4, a fixing screw 501, and mating protrusions 303. The cooperation between the mating protrusions 303 and the mating grooves 401 can effectively improve the connection stability between the coal cutting bit head 3 and the wear-resistant head 4. The setting of the fixing screw 501 can effectively improve the replacement efficiency and installation efficiency of the wear-resistant head 4. The combination of the three can effectively improve the service life of the device; the device is provided with a sealing seat 402 and a chip removal groove 302. The setting of the sealing seat 402 and the sealing groove 402 can effectively improve the sealing effect between the coal cutting bit head 3 and the wear-resistant head 4, preventing external waste chips from entering the device. The setting of the chip removal groove 302 can effectively accelerate the discharge of the waste chips generated during the working hours of the device, improving the production efficiency of the device.

[0032] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the relevant art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A threaded chip - discharging coal cutting pick, characterized in that, Including: A pick smooth shank (2), the upper end of the pick smooth shank (2) is fixedly connected with a pick threaded shank (1), the upper end of the pick threaded shank (1) is fixedly connected with a coal pick head (3), three mating protrusions (303) are fixedly connected to the upper side wall of the coal pick head (3), the coal pick head (3) is movably connected with a wear-resistant head (4) through the mating protrusions (303), a pick seat (201) is fixedly connected to the lower side wall of the pick smooth shank (2), and a mating inner groove (202) is arranged inside the pick threaded shank (1), the pick smooth shank (2), and the coal pick head (3); A sealing seat (402) is fixedly connected to the lower side wall of the wear-resistant head (4), a threaded sleeve (403) is fixedly connected to the lower side wall of the sealing seat (402), the threaded sleeve (403) is matched with a fixing screw (501), a rotating seat (203) is rotatably connected to the lower side wall of the pick seat (201), and a fixing cap (5) is fixedly connected to the lower end of the fixing screw (501).

2. The threaded chip removal type coal cutting pick according to claim 1, characterized in that, Chip removal grooves (302) are arranged on the outer side walls of both the coal pick head (3) and the wear-resistant head (4), and the chip removal grooves (302) on the outer side walls of the coal pick head (3) and the wear-resistant head (4) are matched with each other.

3. The threaded chip removal type coal cutting pick according to claim 1, characterized in that, Three mating grooves (401) are arranged on the lower side wall of the wear-resistant head (4), and the mating grooves (401) are matched with the mating protrusions (303).

4. A screw chip removal type coal cutting pick according to claim 1, characterized in that, A sealing groove (304) is arranged in the middle of the upper side wall of the coal pick head (3), and the sealing groove (304) is matched with the sealing seat (402).

5. The threaded chip removal type coal cutting pick according to claim 1, wherein, A stepped seat (301) is fixedly connected to the outer side wall of the coal pick head (3) and near the lower end.

6. The threaded chip removal type coal cutting pick according to claim 1, characterized in that, The rotating seat (203) is matched with the fixing cap (5).

7. A screw chip - discharging coal cutting pick according to claim 1, characterized in that, The coal pick head (3) and the wear-resistant head (4) can form a conical shape.

8. The screw chip removal type coal cutting pick according to claim 1, characterized in that, The length of the pick threaded shank (1) is equal to the combined length of the coal pick head (3) and the wear-resistant head (4).

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