Cutting pick capable of prolonging service life of alloy
By using fixed thermal conductivity mechanisms and components such as thermal conduction blocks and thermal strips in the cutting teeth, the heat of the alloy head is transmitted and heat dissipation is accelerated, which solves the problems of heat and short life of the alloy head in the existing cutting teeth, and achieves a longer alloy life and higher heat dissipation efficiency.
Patent Information
- Application Number
- CN202421498049.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-27
AI Technical Summary
During the manufacturing process of existing cut-off teeth, the connection between the alloy head and the tooth body is brazed, which causes the alloy to be heated too high, affecting the alloy life, and the internal stress at the weld is concentrated and the heat dissipation is not timely, further reducing the alloy life.
A cutting teeth that increases the life of the alloy is designed, using a fixed thermal conduction mechanism and components such as thermal conduction blocks and thermal strips to conduct heat from the alloy head to the cutting teeth through copper gaskets and thermal conduction strips, and accelerate heat dissipation through the thermal conduction blocks to avoid brazing connections.
It effectively avoids the alloy head heat and secondary heat treatment during the connection process, extends the alloy life, and reduces the heat accumulation problem of the alloy head during use by improving the heat dissipation efficiency.
Smart Images
Figure CN222823235U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pick teeth, in particular to a pick tooth with increased alloy life. Background Art
[0002] Picks are parts of mining and tunneling machines. Picks are divided into coal mining machine picks and tunneling machine picks. They are parts of mining and tunneling machines and are used in mining, tunnel construction and other aspects.
[0003] In the manufacturing process of existing picks, the alloy head and the tooth body are usually connected by brazing. The cemented carbide is already in the best use state when leaving the factory. During brazing, the alloy is heated to too high a temperature, which will directly affect the life of the alloy. After brazing, the internal stress is concentrated at the weld. The alloy generates a lot of heat during the use of the pick, and untimely heat dissipation will also reduce the life of the alloy. Utility Model Content
[0004] The utility model provides a pick with increased alloy life, aiming to solve the problem that in the manufacturing process of the existing pick, the alloy head and the tooth body are usually connected by brazing, the cemented carbide is already in the best use state when leaving the factory, the alloy is heated to too high a temperature during brazing, which directly affects the alloy life, the internal stress is concentrated at the weld after brazing, the alloy generates a lot of heat during the use of the pick, and the untimely heat dissipation also reduces the alloy life, thereby affecting the use effect.
[0005] The utility model is realized as follows: a pick for increasing the service life of an alloy comprises an alloy head, a pick body and a pick retaining spring, a fixed heat conduction mechanism is arranged at the rear side of the alloy head, a heat conduction block is arranged on the surface of the pick body, and a heat conduction strip is arranged inside the pick body;
[0006] The fixed heat-conducting mechanism comprises a nut, a copper gasket and a threaded rod. The copper gasket is movably sleeved on the surface of the threaded rod, and the surface of the threaded rod is threadedly connected to the inner wall of the nut.
[0007] In order to facilitate the connection between the alloy head and the pick body, as a preferred pick of the utility model for increasing the service life of the alloy, a slot is provided inside the pick body, and the surface of the alloy head contacts the inner wall of the slot.
[0008] In order to facilitate the conduction of heat generated by the alloy head to the pick body, as a preferred pick for increasing the life of the alloy in the utility model, the inner wall of the slot is provided with grooves, and the number of the grooves is several and evenly distributed on the inner wall of the slot, and the thermal conductive strip is tightly inserted into the inside of the groove, and the surface of the thermal conductive strip is in contact with the surface of the alloy head.
[0009] In order to achieve the effect of limiting the alloy head, as a preferred pick for increasing the life of the alloy in the utility model, a through hole is opened inside the pick body, and the side of the threaded rod close to the slot passes through the copper gasket and the slot in turn and extends to the inside of the through hole, the front side of the nut is in close contact with the inner wall of the through hole, and the rear side of the inner wall of the slot and the rear side of the alloy head are both in contact with the surface of the copper gasket.
[0010] In order to facilitate the connection between the threaded rod and the alloy head, as a preferred pick for increasing the life of the alloy in the utility model, a threaded hole is provided inside the alloy head, and the threaded rod extends to the inside of the threaded hole on one side close to the threaded hole and is threadedly connected to the inner wall of the threaded hole.
[0011] In order to achieve the effect of preventing stones from getting stuck in the through hole, as a preferred pick for increasing the service life of the alloy in the utility model, a protective net is clamped on the inner wall of the through hole.
[0012] In order to achieve the effect of accelerating the heat dissipation of the pick body, as a preferred pick of the utility model for increasing the life of the alloy, the surface of the pick body is provided with an inlay groove, the number of the inlay grooves is several and evenly distributed on the surface of the pick body, the heat conductive block is inlaid inside the inlay groove, the number of the heat conductive blocks is several.
[0013] In order to achieve the effect of preventing the alloy head from being heated, as a preferred pick for increasing the alloy life of the utility model, the threaded hole is formed by tapping under cooling of cutting fluid.
[0014] Compared with the prior art, the beneficial effects of the utility model are:
[0015] The pick that increases the life of the alloy can connect the alloy head to the pick body by inserting the alloy head into the slot and threading the nut to the threaded rod. At this time, there is no need to use brazing technology to limit the connection between the alloy head and the pick body, so as to avoid the alloy head being heated, resulting in the alloy head being subjected to secondary heat treatment and affecting the service life. When the alloy head is in use, when friction with the excavation site generates heat, the heat will be absorbed and conducted to the inside of the pick body through the copper gasket and a plurality of heat-conducting strips. The pick body has a larger contact area with the air, which can speed up the heat dissipation speed. The heat is then transferred to the heat-conducting block through the pick body, and the heat-conducting block can dissipate the heat more quickly, thereby avoiding the problem that the heat generated by the alloy head during use is inconvenient to dissipate, thereby reducing the service life of the alloy head. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 The overall structure diagram of the pick for increasing alloy life of the utility model;
[0017] Figure 2It is a three-dimensional exploded schematic diagram of the pick body, the heat-conducting strip and the heat-conducting block in the utility model;
[0018] Figure 3 It is a three-dimensional exploded schematic diagram of the alloy head and the copper gasket in the utility model;
[0019] Figure 4 It is a three-dimensional exploded schematic diagram of the alloy head and the threaded rod in the utility model;
[0020] Figure 5 It is a side view of the pick body in the utility model.
[0021] In the figure, 1. alloy head; 2. pick body; 3. pick retaining spring; 4. heat conductive block; 5. protective net; 6. inlay groove; 7. through hole; 8. slot; 9. fixed heat conductive mechanism; 901. nut; 902. copper gasket; 903. threaded rod; 10. groove; 11. heat conductive strip; 12. threaded hole. DETAILED DESCRIPTION
[0022] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0023] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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, and therefore cannot be understood as a limitation on the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.
[0024] See also Figure 1-5 The utility model provides a technical solution: a pick for increasing the service life of an alloy, comprising an alloy head 1, a pick body 2 and a pick retaining spring 3, a fixed heat conduction mechanism 9 is arranged at the rear side of the alloy head 1, a heat conduction block 4 is arranged on the surface of the pick body 2, and a heat conduction strip 11 is arranged inside the pick body 2;
[0025] The fixed heat-conducting mechanism 9 comprises a nut 901 , a copper gasket 902 and a threaded rod 903 . The copper gasket 902 is movably sleeved on the surface of the threaded rod 903 , and the surface of the threaded rod 903 is threadedly connected to the inner wall of the nut 901 .
[0026] In this embodiment: the alloy head 1 is connected to the pick body 2 by inserting the alloy head 1 into the slot 8 and threading the nut 901 and the threaded rod 903. At this time, there is no need to use brazing technology to limit the connection between the alloy head 1 and the pick body 2 to avoid heating of the alloy head 1, which causes the alloy head 1 to be subjected to secondary heat treatment and affects the service life. When the alloy head 1 is in use, when heat is generated by friction with the excavation site, the copper gasket 902 and a plurality of heat-conducting strips 11 are used to absorb heat and conduct it to the inside of the pick body 2. The contact area between the pick body 2 and the air is larger, which can speed up the heat dissipation speed. The heat is then transferred to the heat-conducting block 4 through the pick body 2, and the heat-conducting block 4 can dissipate the heat more quickly, thereby avoiding the problem that the heat generated by the alloy head 1 during use is inconvenient to dissipate, thereby reducing the service life of the alloy head 1.
[0027] As a technical optimization solution of the present invention, a slot 8 is provided inside the pick body 2 , and the surface of the alloy head 1 contacts the inner wall of the slot 8 .
[0028] In this embodiment, the alloy head 1 is inserted into the slot 8 , so that the alloy head 1 can be connected to the pick body 2 , thereby achieving the effect of conveniently connecting the alloy head 1 to the pick body 2 .
[0029] As a technical optimization solution of the utility model, a groove 10 is opened on the inner wall of the slot 8, and the number of the grooves 10 is several and evenly distributed on the inner wall of the slot 8. The thermal conductive strip 11 is tightly inserted into the inside of the groove 10, and the surface of the thermal conductive strip 11 contacts the surface of the alloy head 1.
[0030] In this embodiment, the heat generated by the alloy head 1 during use is transferred to the pick body 2 through a plurality of heat-conducting strips 11 and the copper gasket 902 , thereby achieving the effect of conveniently transferring the heat generated by the alloy head 1 to the pick body 2 .
[0031] As a technical optimization solution of the utility model, a through hole 7 is opened inside the pick body 2, and the threaded rod 903 passes through the copper gasket 902 and the slot 8 in sequence on the side close to the slot 8 and extends to the inside of the through hole 7. The front side of the nut 901 is in close contact with the inner wall of the through hole 7, and the rear side of the inner wall of the slot 8 and the rear side of the alloy head 1 are both in contact with the surface of the copper gasket 902.
[0032] In this embodiment: by adjusting the position of the nut 901, the inner wall of the nut 901 is threadedly connected to the surface of the threaded rod 903, and then using a suitable external ratchet wrench to tighten the nut 901, the alloy head 1 can be limited at this time, thereby achieving the effect of limiting the position of the alloy head 1.
[0033] As a technical optimization solution of the present invention, a threaded hole 12 is provided inside the alloy head 1 , and the threaded rod 903 extends from one side close to the threaded hole 12 to the inside of the threaded hole 12 and is threadedly connected to the inner wall of the threaded hole 12 .
[0034] In this embodiment, the threaded rod 903 can be connected to the alloy head 1 by threading the threaded rod 903 to the inner wall of the threaded hole 12, thereby achieving the effect of conveniently connecting the threaded rod 903 to the alloy head 1.
[0035] As a technical optimization solution of the present utility model, a protective net 5 is clamped on the inner wall of the through hole 7 .
[0036] In this embodiment, the through hole 7 is protected by the protective net 5 , so that stones can be prevented from getting stuck in the through hole 7 when the alloy head 1 is in use, thereby achieving the effect of preventing stones from getting stuck in the through hole 7 .
[0037] As a technical optimization solution of the utility model, the surface of the pick body 2 is provided with an inlay groove 6, the number of which is several and evenly distributed on the surface of the pick body 2, and the heat conductive block 4 is embedded in the inlay groove 6, the number of which is several.
[0038] In this embodiment, after the pick body 2 absorbs the heat of the alloy head 1 , the heat conducting block 4 absorbs the heat inside the pick body 2 and dissipates the heat quickly, thereby achieving the effect of accelerating the heat dissipation of the pick body 2 .
[0039] As a technical optimization solution of the utility model, the threaded hole 12 is formed by tapping under the cooling of cutting fluid.
[0040] In this embodiment, the threaded hole 12 is formed by tapping the alloy head 1 under the cooling of the cutting fluid, so as to avoid the alloy head 1 being heated for a second time and affecting its service life, thereby achieving the effect of preventing the alloy head 1 from being heated.
[0041] Working principle: First, the alloy head 1 is tapped to form a threaded hole 12 under the cooling of the cutting fluid to prevent the alloy head 1 from being heated again and affecting its service life. It should be noted that the cutting fluid is an existing mature technology that has been published and will not be elaborated here. Then the nut 901 is placed inside the through hole 7, and then the threaded rod 903 is threadedly connected to the threaded hole 12, and then the alloy head 1 is inserted into the slot 8. At this time, the alloy head 1 can be connected to the pick body 2. At this time, the threaded rod 903 will pass through the copper gasket 902 and the pick body 2, and then extend to the inside of the through hole 7. At this time, the position of the nut 901 is adjusted so that the inner wall of the nut 901 is threadedly connected to the surface of the threaded rod 903, and then a suitable external ratchet wrench is used to tighten the nut 901. At this time, the alloy head 1 can be limited, and then the protective net 5 is clamped on the inner of the support block. The wall and the protective net 5 can prevent stones from getting stuck in the through hole 7 when the alloy head 1 is in use. At this time, there is no need to use brazing technology to connect and limit the alloy head 1 and the pick body 2, so as to prevent the alloy head 1 from being heated, resulting in the alloy head 1 being subjected to secondary heat treatment and affecting the service life. When the alloy head 1 is in use, when friction with the excavation site generates heat, the heat will be absorbed and conducted to the inside of the pick body 2 through the copper gasket 902 and a plurality of heat-conducting strips 11. The pick body 2 has a larger contact area with the air, which can speed up the heat dissipation speed. The heat is then transferred to the heat-conducting block 4 through the pick body 2, and the heat-conducting block 4 can dissipate the heat more quickly. It should be noted that the heat-conducting strip 11 and the heat-conducting block 4 are both made of copper, and copper has good thermal conductivity and heat dissipation properties, which can prevent the heat generated by the alloy head 1 during use from being inconvenient to dissipate, thereby reducing the service life of the alloy head 1.
[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A pick for increasing the service life of an alloy, comprising an alloy head (1), a pick body (2) and a pick retaining spring (3), characterized in that: A fixed heat-conducting mechanism (9) is arranged on the rear side of the alloy head (1), a heat-conducting block (4) is arranged on the surface of the pick body (2), and a heat-conducting strip (11) is arranged inside the pick body (2); The fixed heat-conducting mechanism (9) comprises a nut (901), a copper gasket (902) and a threaded rod (903); the copper gasket (902) is movably sleeved on the surface of the threaded rod (903); and the surface of the threaded rod (903) is threadedly connected to the inner wall of the nut (901).
2. A pick for increasing alloy life according to claim 1, characterized in that: A slot (8) is provided inside the pick body (2), and the surface of the alloy head (1) is in contact with the inner wall of the slot (8).
3. A pick for increasing alloy life according to claim 2, characterized in that: The inner wall of the slot (8) is provided with grooves (10), the number of the grooves (10) is several and evenly distributed on the inner wall of the slot (8), the heat conducting strip (11) is tightly inserted into the groove (10), and the surface of the heat conducting strip (11) is in contact with the surface of the alloy head (1).
4. A pick for increasing alloy life according to claim 1, characterized in that: A through hole (7) is provided inside the pick body (2); the threaded rod (903) passes through the copper gasket (902) and the slot (8) in sequence on the side close to the slot (8) and extends to the inside of the through hole (7); the front side of the nut (901) is in close contact with the inner wall of the through hole (7); and the rear side of the inner wall of the slot (8) and the rear side of the alloy head (1) are in contact with the surface of the copper gasket (902).
5. A pick for increasing alloy life according to claim 1, characterized in that: A threaded hole (12) is provided inside the alloy head (1), and a side of the threaded rod (903) close to the threaded hole (12) extends into the inside of the threaded hole (12) and is threadedly connected to the inner wall of the threaded hole (12).
6. A pick for increasing alloy life according to claim 4, characterized in that: The inner wall of the through hole (7) is clamped with a protective net (5).
7. A pick for increasing alloy life according to claim 1, characterized in that: The surface of the pick body (2) is provided with an embedding groove (6), the embedding grooves (6) are in a plurality and are evenly distributed on the surface of the pick body (2), the heat conducting block (4) is embedded in the embedding groove (6), and the heat conducting block (4) is in a plurality.
8. A pick for increasing alloy life according to claim 5, characterized in that: The threaded hole (12) is formed by tapping under cooling by cutting fluid.