A vacuum brazed pick

Abstract

The present application relates to the technical field of pick processing, in particular to a vacuum brazing pick, which comprises a pick body, an inserting and mounting part is arranged on the pick body, further comprising: a connecting sleeve, which is arranged on the pick body, and a plug-in column is detachably mounted in the connecting sleeve, a cutting head is fixedly mounted on the plug-in column, a conical part is arranged on the cutting head, and a tooth groove is arranged on the conical part; and a cutting mechanism, which is connected with the pick body and the cutting head respectively, and is connected with the connecting sleeve and the plug-in column respectively, and is further connected with the inserting and mounting part; wherein the cutting mechanism comprises a positioning and dismounting assembly and a pressure detection assembly; the vacuum brazing pick has a novel structure, can ensure that the pick body and the tooth seat always maintain a reasonable configuration, is beneficial to improving the cutting efficiency, can save the pick material through local replacement, reduces the processing cost, and provides convenience for the staff.

Description

Technical Field

[0001] This invention relates to the field of cutting tool processing technology, specifically a vacuum brazed cutting tool. Background Technology

[0002] The failure modes of cutting tools mainly include alloy tip detachment, chipping, wear, shank bending, and breakage. Among these, wear and alloy tip detachment are the most common forms of damage. Therefore, the brazing quality of cutting tools is of great importance. Vacuum brazing utilizes a complete vacuum environment in the brazing (heating) and cooling chambers of the furnace, completely preventing oxidation and decarburization of the base material and welding material during brazing and cooling. Simultaneously, the complete vacuum state allows the molten copper brazing filler metal to effectively wet the joint surface without flux, avoiding the formation of micro-cavities in the weld and improving weld strength.

[0003] Currently, existing vacuum brazed cutting teeth are worn down during coal and rock cutting, which not only affects their service life but also requires complete replacement after wear. Due to the high requirements for the configuration between the tooth holder and the cutting tooth, replacing all the cutting teeth not only wastes materials but may also reduce cutting efficiency due to unreasonable configuration between the tooth holder and the cutting tooth, making them inconvenient to use. Therefore, in view of the above situation, there is an urgent need to develop a vacuum brazed cutting tooth to overcome the shortcomings in current practical applications. Summary of the Invention

[0004] The purpose of this invention is to provide a vacuum brazed cutting tooth to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A vacuum brazing cutting tooth includes a cutting tooth body, wherein the cutting tooth body is provided with an insertion part, and further includes:

[0007] A connecting sleeve is located on the cutting tooth body, and a plug post is detachably installed inside the connecting sleeve. A cutting head is fixedly installed on the plug post, and a tapered part is provided on the cutting head, with tooth grooves opened on the tapered part.

[0008] The cutting mechanism is connected to the cutting tooth body and the cutting head, and is also connected to the connecting sleeve and the insertion post. The cutting mechanism is also connected to the insertion part.

[0009] The cutting mechanism includes a positioning and disassembly assembly component and a pressure detection component;

[0010] The positioning and disassembly assembly is connected to the cutting tooth body and the cutting head respectively, and is also connected to the connecting sleeve and the insertion post respectively. The pressure detection assembly is connected to the insertion part and the cutting head respectively, and is also connected to the positioning and disassembly assembly.

[0011] As a further aspect of the present invention, it also includes: a cemented carbide head, the cemented carbide head being disposed on the end of the tapered portion;

[0012] And a wear-resistant annular belt, which is disposed on the side wall of the tapered portion.

[0013] As a further aspect of the present invention: the wear-resistant annular belt is an annular belt with a width of 20-30mm and a thickness of 2-3mm, and the wear-resistant annular belt is disposed on the side wall of the conical part by means of welding or metallurgy.

[0014] The cone angle of the cone-shaped part is 6-10°, and the cone-shaped part has 3-8 tooth grooves.

[0015] As a further aspect of the present invention: the positioning and disassembly assembly includes:

[0016] A movable receiving groove is formed on the cutting tooth body;

[0017] A movable limiting shell is sleeved on the cutting tooth body and slidably connected to the cutting tooth body. The movable limiting shell is also slidably connected to the connecting sleeve through a guide protrusion.

[0018] A sliding cavity is provided between the movable limiting shell and the connecting sleeve, and a return spring is provided inside the sliding cavity. The two ends of the return spring are respectively connected to the cutting tooth body and the guide protrusion.

[0019] A snap-fit ​​positioning unit is connected to the connecting sleeve and the insertion post respectively, and is detachably connected to the guide protrusion;

[0020] The device includes a top limiting unit, which is connected to the insertion part and the insertion post, and is also connected to the pressure detection assembly.

[0021] As a further aspect of the present invention: the card-mounting positioning unit includes:

[0022] A mounting slot is provided on the insertion post;

[0023] A tapered limiting groove, wherein the number of the tapered limiting grooves is multiple, and the multiple tapered limiting grooves are evenly opened on the connecting sleeve;

[0024] Positioning steel balls, the number of which is equal to the number of the conical limiting grooves, and the plurality of positioning steel balls are respectively located in the plurality of the conical limiting grooves, and the positioning steel balls are respectively detachably connected to the guide protrusion and the mounting groove;

[0025] And a wear-resistant ring, which is located on the movable limiting shell.

[0026] As a further aspect of the present invention: the top limiting unit includes:

[0027] The detection communication cavity is located in the middle of the cutting head and the insertion post, and one end of the detection communication cavity is provided with a limiting hole.

[0028] A second sealing sliding post is slidably installed inside the detection communication cavity;

[0029] The second limiting cone is located inside the detection communication cavity and is fixedly connected to the second sealing sliding column via the second connecting column. The second limiting cone is also detachably connected to the first limiting hole.

[0030] Top post two, one end of which is fixedly connected to the limiting cone two, and the other end of the top post two passes through the limiting hole one;

[0031] And a clamping module, which is connected to the insertion part and is detachably connected to the top post.

[0032] As a further aspect of the present invention: the clamping module includes:

[0033] A hydraulic control cavity is provided on the insert portion, and a limiting hole 2 is provided at one end of the hydraulic control cavity;

[0034] A sealing sliding column one is slidably installed inside the hydraulic control chamber;

[0035] The first limiting cone is located in the hydraulic control chamber and is fixedly connected to the first sealing sliding column through the first connecting column. The first limiting cone is also detachably connected to the second limiting hole.

[0036] Top post one, one end of which is fixedly connected to the limiting cone one, and the other end of the top post one passes through the limiting hole two and is detachably connected to the top post two.

[0037] As a further aspect of the present invention: the pressure detection component includes:

[0038] The self-closing filling hole is located on the insert and is connected to the hydraulic control chamber. The hydraulic control chamber contains hydraulic oil and a pressure relief structure, which is configured to cooperate with the self-closing filling hole.

[0039] A limiting hole is provided on the tapered portion;

[0040] The detection cone is movably installed in the limiting hole, and one end of the detection cone is connected to the detection communication cavity through a channel, wherein hydraulic oil is provided in the detection communication cavity.

[0041] Compared with the prior art, the beneficial effects of the present invention are:

[0042] Before the cutting teeth are put into operation, the cutting tooth body can be connected to the tooth base via the insertion part, and the connection between the connecting sleeve and the insertion post is achieved through mutual insertion. This allows for a detachable connection between the cutting head and the cutting tooth body. The cutting head, driven by a coal mining machine, can cut coal and rock through the tapered part and tooth groove on its cutting head. During the cutting process, a pressure detection component is installed. This assists the cutting work and alerts the operator when the tapered part and tooth groove are subjected to excessive pressure, preventing damage or excessive wear to these parts and extending the service life of the cutting teeth. After a period of operation, when the tapered part and tooth groove show significant wear, the positioning and disassembly assembly can be used. This assembly plays a role in positioning and securing the cutting head during the cutting process, ensuring a tight connection between the cutting tooth body and the cutting head. When the tapered part and tooth groove show wear, the cutting head can be disassembled and replaced with a new one via the positioning and disassembly assembly. In this case, the cutting tooth body does not need to be replaced, thus ensuring that the cutting tooth body and tooth base always maintain a reasonable configuration, which is beneficial to improving cutting efficiency. Furthermore, by partially replacing the cutting tooth, the material of the cutting tooth can be saved, the processing cost can be reduced, and convenience can be provided to the workers. Attached Figure Description

[0043] Figure 1 This is a three-dimensional structural diagram of the vacuum brazing cutting teeth in an embodiment of the present invention.

[0044] Figure 2 This is a three-dimensional structural diagram of the cutting tooth body in an embodiment of the present invention.

[0045] Figure 3 This is a three-dimensional structural diagram of the movable receiving groove portion in an embodiment of the present invention.

[0046] Figure 4 This is a schematic diagram of the main structure of the movable limiting shell part in an embodiment of the present invention.

[0047] Figure 5 This is a cross-sectional view of the connecting sleeve portion in an embodiment of the present invention.

[0048] Figure 6 This is a partial cross-sectional view of the insertion part in an embodiment of the present invention.

[0049] Figure 7 This is a three-dimensional structural diagram of a portion of the limiting cone in an embodiment of the present invention.

[0050] Figure 8 This is a three-dimensional structural diagram of the cutting head portion in an embodiment of the present invention.

[0051] Figure 9 This is a cross-sectional view of the plug-in post portion in an embodiment of the present invention.

[0052] In the diagram: 1-cutting tooth body, 2-insertion part, 3-self-closing filling hole, 4-movable receiving groove, 5-wear-resistant ring, 6-moving limiting shell, 7-cutting head, 8-wear-resistant annular belt, 9-conical part, 10-tooth groove, 11-limiting hole, 12-detection cone, 13-carbide head, 14-positioning groove, 15-reset spring, 16-connecting sleeve, 17-positioning steel ball, 18-guide protrusion, 19-conical limiting groove, 20-sliding cavity, 21-hydraulic control cavity, 22-sealing sliding column one, 23-connecting column one, 24-limiting cone one, 25-top column one, 26-insertion column, 27-clamping groove, 28-detection connecting cavity, 29-sealing sliding column two, 30-connecting column two, 31-limiting cone two, 32-top column two, 33-limiting hole one, 34-limiting hole two. Detailed Implementation

[0053] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0055] Please see Figures 1-9 The present invention provides a vacuum brazing cutting tooth, comprising a cutting tooth body 1, wherein the cutting tooth body 1 is provided with an insertion part 2, and further comprising:

[0056] A connecting sleeve 16 is located on the cutting tooth body 1, and a plug post 26 is detachably installed inside the connecting sleeve 16. A cutting head 7 is fixedly installed on the plug post 26. The cutting head 7 is provided with a tapered part 9, and a tooth groove 10 is opened on the tapered part 9.

[0057] The cutting mechanism is connected to the cutting tooth body 1 and the cutting head 7 respectively, and is also connected to the connecting sleeve 16 and the insertion post 26 respectively. The cutting mechanism is also connected to the insertion part 2.

[0058] The cutting mechanism includes a positioning and disassembly assembly component and a pressure detection component;

[0059] The positioning and disassembly assembly is connected to the cutting tooth body 1 and the cutting head 7 respectively, and is also connected to the connecting sleeve 16 and the insertion post 26 respectively. The pressure detection assembly is connected to the insertion part 2 and the cutting head 7 respectively, and is also connected to the positioning and disassembly assembly.

[0060] Before the cutting tooth is put into operation, the cutting tooth body 1 can be connected to the tooth base via the insertion part 2, and the connecting sleeve 16 and the insertion post 26 are mutually inserted and connected, allowing the cutting head 7 and the cutting tooth body 1 to be detachably connected. The cutting head 7 can then cut coal and rock under the drive of the coal mining machine via the conical part 9 and the tooth groove 10 provided on it. During the cutting process, a pressure detection component is installed to assist the cutting work and to promptly alert the operator when the conical part 9 and the tooth groove 10 are subjected to excessive pressure, preventing damage or excessive wear to the conical part 9 and the tooth groove 10, thus extending the service life of the cutting tooth. After the cutting tooth has been in operation for a period of time, when the tapered part 9 and the tooth groove 10 show significant wear, the positioning and disassembly assembly can be used to secure the cutting tooth body 1 to the cutting head 7 during the cutting process. After the tapered part 9 and the tooth groove 10 show wear, the cutting head 7 can be disassembled and replaced with a new one through the positioning and disassembly assembly. At this time, the cutting tooth body 1 does not need to be replaced, thus ensuring that the cutting tooth body 1 and the tooth seat always maintain a reasonable configuration, which is conducive to improving cutting efficiency. Furthermore, by partially replacing the cutting tooth, the material of the cutting tooth can be saved, the processing cost can be reduced, and convenience can be provided to the workers.

[0061] In one embodiment of the present invention, please refer to Figures 1-9 It also includes: a cemented carbide head 13, which is disposed on the end of the tapered portion 9;

[0062] And a wear-resistant annular belt 8, which is disposed on the side wall of the tapered portion 9.

[0063] The wear-resistant annular belt 8 is an annular belt with a width of 20-30mm and a thickness of 2-3mm, and the wear-resistant annular belt 8 is set on the side wall of the conical part 9 by welding or metallurgical method.

[0064] The cone angle of the cone portion 9 is 6-10°, and 3-8 tooth grooves 10 are provided on the cone portion 9.

[0065] The wear-resistant annular band 8 and the carbide head 13 can improve the wear resistance of the tapered part 9 and the tooth groove 10, which is beneficial to extending the service life of the cutting head 7. The carbide head 13 can be made of YG8-AS series carbide material and is welded to the top of the tapered part 9 by vacuum brazing. At the same time, an annular band with a width of about 20-30mm and a thickness of 2-3mm is welded along the circumference of the tooth body below the top of the cutting tooth cone by overlay welding or other metallurgical methods. This wear-resistant overlay layer can further improve the wear resistance and service life of the cutting tooth.

[0066] In one embodiment of the present invention, please refer to Figures 1-9 The positioning and disassembly assembly includes:

[0067] Movable receiving groove 4, which is formed on the cutting tooth body 1;

[0068] The movable limiting shell 6 is sleeved on the cutting tooth body 1 and slidably connected to the cutting tooth body 1. The movable limiting shell 6 is also slidably connected to the connecting sleeve 16 through the guide protrusion 18.

[0069] A sliding cavity 20 is located between the movable limiting shell 6 and the connecting sleeve 16, and a return spring 15 is provided in the sliding cavity 20. The two ends of the return spring 15 are respectively connected to the cutting tooth body 1 and the guide protrusion 18.

[0070] A snap-fit ​​positioning unit is connected to the connecting sleeve 16 and the insertion post 26 respectively, and is detachably connected to the guide protrusion 18;

[0071] The device includes a top-limiting unit, which is connected to the insertion part 2 and the insertion post 26, and is also connected to the pressure detection assembly.

[0072] The card-mounted positioning unit includes:

[0073] A mounting slot 27 is formed on the insertion post 26;

[0074] A tapered limiting groove 19, wherein there are multiple tapered limiting grooves 19, and the multiple tapered limiting grooves 19 are evenly opened on the connecting sleeve 16;

[0075] Positioning steel balls 17, the number of which is equal to the number of the conical limiting grooves 19, and the plurality of positioning steel balls 17 are respectively located in the plurality of the conical limiting grooves 19, and the positioning steel balls 17 are respectively detachably connected to the guide protrusion 18 and the mounting groove 27;

[0076] And wear-resistant ring 5, which is located on the movable limiting shell 6.

[0077] The top limiting unit includes:

[0078] The detection communication cavity 28 is located in the middle of the cutting head 7 and the insertion post 26, and one end of the detection communication cavity 28 is provided with a limiting hole 33.

[0079] A second sealing sliding post 29 is slidably installed inside the detection communication cavity 28;

[0080] Limiting cone 2 31 is located in the detection communication cavity 28 and is fixedly connected to the sealing sliding column 29 via connecting column 2 30. The limiting cone 2 31 is also detachably connected to the limiting hole 1 33.

[0081] Top post 32, one end of which is fixedly connected to the limiting cone 31, and the other end of which passes through the limiting hole 33;

[0082] And a clamping module, which is connected to the insertion part 2 and is detachably connected to the top post 32.

[0083] The clamping module includes:

[0084] A hydraulic control cavity 21 is provided on the insert portion 2, and a limiting hole 34 is provided at one end of the hydraulic control cavity 21.

[0085] A sealing sliding post 22 is slidably installed inside the hydraulic control chamber 21.

[0086] Limiting cone 24 is located in the hydraulic control chamber 21 and is fixedly connected to the sealing sliding column 22 via connecting column 23. The limiting cone 24 is also detachably connected to the limiting hole 34.

[0087] Top post 25, one end of which is fixedly connected to the limiting cone 24, and the other end of which passes through the limiting hole 34 and is detachably connected to the top post 32.

[0088] When the cutting head 7 needs to be replaced, the operator only needs to manually pull the wear-resistant ring 5 and allow the moving limit shell 6 to slide downwards on the cutting tooth body 1 (e.g., Figure 4 and 5 As shown), the guide protrusion 18 moves downward. At this time, the reset spring 15 is gradually compressed. When the guide protrusion 18 is misaligned with the conical limiting groove 19, the positioning steel ball 17 rolls from the conical limiting groove 19 into the sliding cavity 20. Under normal working conditions, since a part of the positioning steel ball 17 extends into the connecting sleeve 16 through the conical limiting groove 19 and contacts the locking groove 27, the locking between the connecting sleeve 16 and the insertion post 26 is achieved, so that the connecting sleeve 16 and the insertion post 26 cannot slide relative to each other in the vertical direction. At the same time, the insertion post 26 can rotate in the connecting sleeve 16 to avoid the cutting head 7 from getting stuck during the cutting process. When the operator manually pulls the moving limiting shell 6 downward, the locking groove 27 is not obstructed under the action of the positioning steel ball 17 rolling into the sliding cavity 20. Then the insertion post 26 slides freely in the connecting sleeve 16, so that the cutting tooth body 1 and the cutting head 7 can be separated.

[0089] During normal use, due to the thrust of the pressure detection component, the sealing sliding column 22 can slide upward within the hydraulic control chamber 21 (e.g., Figure 6 As shown in the figure, it pushes the connecting post 23, the limiting cone 24 and the top post 25 to move upward synchronously, so that the top post 25 and the top post 32 contact each other in the connecting sleeve 16. Since the top post 25 has a pushing effect on the top post 32, the stability of the snap-fit ​​contact between the connecting sleeve 16 and the plug post 26 can be guaranteed, and the cutting head 7 can be prevented from shaking greatly during the cutting operation.

[0090] In one embodiment of the present invention, please refer to Figures 1-9 The pressure detection component includes:

[0091] The self-closing filling hole 3 is located on the insert part 2 and is connected to the hydraulic control chamber 21. The hydraulic control chamber 21 is filled with hydraulic oil and is also provided with a pressure relief structure. The pressure relief structure is configured to cooperate with the self-closing filling hole 3.

[0092] A limiting hole 11 is provided on the tapered portion 9;

[0093] And a detection cone 12, which is movably installed in the limiting hole 11, and one end of the detection cone 12 is connected to the detection communication cavity 28 through a channel, wherein the detection communication cavity 28 is provided with hydraulic oil.

[0094] Before installing the cutting tooth body 1, hydraulic oil at a certain pressure can be filled into the hydraulic control chamber 21 through the self-closing filling hole 3. The self-closing filling hole 3 can be composed of an existing valve. When filling is required, the valve can be opened, and then liquid can be injected into the hydraulic control chamber 21. Once the liquid is injected into the hydraulic control chamber 21, the valve will close again to prevent leakage. At this time, under the thrust of the hydraulic oil, the first top column 25 can be pressed tightly against the second top column 32, and the hydraulic oil in the detection communication chamber 28 will also have a certain... A certain pressure is applied, causing the tip of the detection cone 12 to extend as far as possible outside the limiting hole 11 under the thrust of the hydraulic oil. This ensures that the tip of the detection cone 12 is slightly higher than the outer surface of the conical portion 9, allowing the detection cone 12 to contact the coal and rock phase, thus assisting in cutting. The tip of the detection cone 12 has a conical structure, and the root of the detection cone 12 has an I-shaped structure. The root of the detection cone 12 is inserted into the limiting hole 11, which limits the I-shaped structure, ensuring the overall detection cone... 12 can slide a certain distance within the limiting hole 11. Of course, other existing structures can also be used, which will not be elaborated here. When encountering a relatively hard area, the top of the detection cone 12 is subjected to excessive pressure and, under the pressure, completely retracts into the limiting hole 11. At this time, the bottom of the detection cone 12 will exert a squeezing effect on the hydraulic oil in the channel. Under the transmission action of the second top column 32 and the first top column 25, the pressure of the hydraulic oil stored in the hydraulic control chamber 21 can also increase. At this time, the hydraulic oil pressure is increased by the bottom setting in the hydraulic control chamber 21. The pressure relief structure can be in the form of a safety valve and has a buffer chamber with a certain space. When the internal pressure of the system exceeds the set value, the sensing system will trigger the pressure relief hole to open, discharge some hydraulic oil into the buffer chamber, and activate the alarm device. In addition, the bottom end of the insert part 2 is also provided with a positioning groove 14, which can improve the fit with the tooth seat and discharge the hydraulic oil in the buffer chamber after cutting. This will not be elaborated on further. Thus, the detection work of the cutting tooth during the entire cutting process can be completed.

[0095] It should be noted that, in this invention, unless otherwise explicitly specified and limited, the terms "sliding," "rotating," "fixed," and "equipped" should be interpreted broadly. For example, they can refer to welded connections, bolted connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0096] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vacuum brazing cutting tooth, comprising a cutting tooth body, wherein the cutting tooth body is provided with an insertion portion, characterized in that, Also includes: The connecting sleeve is located on the cutting tooth body, and a plug post is detachably installed inside the connecting sleeve. A cutting head is fixedly installed on the plug post. The cutting head has a tapered part with tooth grooves. The cutting mechanism is connected to the cutting tooth body and the cutting head, and is also connected to the connecting sleeve and the insertion post. The cutting mechanism is also connected to the insertion part. The cutting mechanism includes a positioning and disassembly assembly component and a pressure detection component; The positioning and disassembly assembly is connected to the cutting tooth body and the cutting head respectively, and is also connected to the connecting sleeve and the insertion post respectively. The pressure detection assembly is connected to the insertion part and the cutting head respectively, and is also connected to the positioning and disassembly assembly. The positioning and disassembly assembly includes: a movable receiving groove, which is formed on the cutting tooth body; The movable limiting shell is sleeved on the cutting tooth body and slidably connected to the cutting tooth body. The movable limiting shell is also slidably connected to the connecting sleeve through the guide protrusion. The sliding cavity is located between the movable limiting shell and the connecting sleeve, and a return spring is provided inside the sliding cavity. The two ends of the return spring are connected to the cutting tooth body and the guide protrusion, respectively. The clamping positioning unit is connected to the connecting sleeve and the insertion post respectively, and can be detachably connected to the guide protrusion; And a top limiting unit, which is connected to the insertion part and the insertion post respectively, and the top limiting unit is also connected to the pressure detection assembly; The top limiting unit includes: a detection communication cavity, which is opened in the middle of the cutting head and the insertion post, and a limiting hole is provided at one end of the detection communication cavity; The second sealing sliding column is slidably installed inside the detection communication cavity; Limiting cone two is located in the detection communication cavity and is fixedly connected to sealing sliding column two through connecting column two. Limiting cone two is also detachably connected to limiting hole one. Top post two, one end of top post two is fixedly connected to limiting cone two, and the other end of top post two passes through limiting hole one; And a clamping module, which is connected to the insertion part and can be detachably connected to the top column; The clamping module includes: a hydraulic control chamber, which is located on the insertion part, and one end of the hydraulic control chamber is provided with a limiting hole 2; Sealing sliding column one is slidably installed inside the hydraulic control chamber; Limiting cone one is located in the hydraulic control chamber and is fixedly connected to sealing sliding column one through connecting column one. Limiting cone one is also detachably connected to limiting hole two. Top post one, one end of top post one is fixedly connected to limiting cone one, and the other end of top post one passes through limiting hole two and can be detachably connected to top post two; The pressure detection component includes: a self-closing filling port, which is located on the insert and is connected to the hydraulic control chamber. The hydraulic control chamber contains hydraulic oil and a pressure relief structure, which is configured to cooperate with the self-closing filling port. A limiting hole is provided on the tapered part; The detection cone is movably installed in the limiting hole, and one end of the detection cone is connected to the detection communication cavity through a channel, wherein hydraulic oil is provided in the detection communication cavity.

2. The vacuum brazed cutting tooth according to claim 1, characterized in that, Also includes: A cemented carbide tip is provided at the end of the tapered portion; And a wear-resistant annular belt, which is set on the side wall of the conical part.

3. The vacuum brazed cutting tooth according to claim 2, characterized in that, The wear-resistant annular belt is an annular belt with a width of 20-30mm and a thickness of 2-3mm. The wear-resistant annular belt is set on the side wall of the conical part by welding or metallurgical method. The cone angle of the conical part is 6-10°, and 3-8 tooth grooves are provided on the conical part.

4. The vacuum brazed cutting tooth according to claim 1, characterized in that, The card-mounted positioning unit includes: A mounting slot is provided on the insertion post; Conical limiting grooves, the number of which is multiple, and the multiple conical limiting grooves are evenly opened on the connecting sleeve; Positioning steel balls, the number of positioning steel balls is equal to the number of conical limiting grooves, and multiple positioning steel balls are located in multiple conical limiting grooves respectively, and the positioning steel balls are detachably connected to the guide protrusion and the locking groove respectively; And a wear-resistant ring, which is located on the movable limiting shell.

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