Bolt miner cutting tooth machining clamp for coal mine

Abstract

The invention relates to the technical field of cutting tooth machining, in particular to a cutting tooth machining clamp of a miner for a coal mine, which comprises a machining seat and a chain conveyor mounted on the machining seat, the chain conveyor comprises a plurality of chain plates, clamping units are mounted on the chain plates, and adjusting matching units are connected between the clamping units and the corresponding chain plates; the height adjusting group adjusts the height of the clamping group through an adjusting plate, so that the height position of the tooth body clamped by the clamping group is adjusted, and the distance between the top of the tooth body and the induction coil is ensured not to change for the tooth bodies with different sizes and specifications; the heating effect of tooth bodies with different sizes and specifications and alloy tool bits is ensured; when the alloy tool bit and the tooth body are heated, the shaking set and the adjusting plate are matched to drive the clamping set to shake the tooth body and the alloy tool bit up and down at small frequency, so that brazing filler metal between the alloy tool bit and the tooth body is evenly distributed under the shaking effect.

Description

Technical Field

[0001] The present invention relates to the technical field of pick processing, and specifically to a pick processing fixture for a coal mine roadheader Background Art

[0002] In coal mine mining operations, a roadheader is a key piece of equipment, and its picks, as the core components directly involved in rock breaking, the performance of the picks will directly affect the mining efficiency and safety. As Figure 7 shown, a pick includes a pick body and a hard alloy cutter head. The lower part of the pick body is cylindrical, the upper part of the pick body is conical, and a shoulder is provided at the connection between the cylindrical and conical parts of the pick body. A connection hole is opened at the top of the conical part of the pick body. An operator places the hard alloy cutter head in the connection hole of the pick body and welds the hard alloy cutter head and the pick body. Currently, brazing is commonly used as the welding method. By filling the brazing filler metal in the parts to be welded, the hard alloy cutter head, the pick body, and the brazing filler metal are heated by a high-frequency electromagnetic field to melt the brazing filler metal to achieve the welding of the hard alloy cutter head and the pick body. After welding, the pick is further processed such as quenching.

[0003] During specific welding processing, the existing fixture supports the lower side of the shoulder of the pick body through multiple clamping rods and clamps the cylindrical part of the pick body. Then, the operator places the hard alloy cutter head in the connection hole of the pick body and fills the brazing filler metal in the parts to be welded. Subsequently, the pick body and the hard alloy cutter head are transported into the induction heating system by a conveying device, and the fixture is started to drive the pick body to rotate, so that the induction heating system uniformly heats the hard alloy cutter head, the pick body, and the brazing filler metal to complete the welding and forming of the pick. Finally, the conveying device transports the formed pick to the subsequent processing station.

[0004] However, the following problems exist in the above welding processing: 1. When forming picks of different sizes and specifications, the existing fixture cannot adjust the height position of the clamped pick body, resulting in a change in the distance between the connection hole of the pick body of different sizes and specifications and the induction coil, affecting the heating effect, and further affecting the welding and forming quality of the pick; 2. When the brazing filler metal is filled between the hard alloy cutter head and the pick body, there may be a problem of uneven distribution of the brazing filler metal between the hard alloy cutter head and the pick body, which will reduce the welding and forming quality of the pick; 3. During the heating process, the clamped position of the cylindrical part of the pick body corresponding to the fixture cannot be fully heated, resulting in uneven heating of the surface of the cylindrical part of the pick body, affecting the subsequent forming quality of the pick. Summary of the Invention

[0005] In order to solve the above technical problems, the present invention adopts the following technical scheme: a processing fixture for a coal mine anchor cutting machine, comprising a processing seat and a chain conveyor installed thereon, the chain conveyor comprising a plurality of chain plates, a clamping unit being installed on the chain plates, and an adjusting and matching unit being connected between the clamping unit and the corresponding chain plates; the clamping unit comprising a driving group installed on the chain plates, a plurality of clamping rods evenly arranged in the circumferential direction being installed on the driving group, a clamping group being installed on the upper side of the clamping rod, the clamping group clamping the tooth body and driving the tooth body to rotate through the driving group; the adjusting and matching unit comprising an adjusting plate arranged above the chain plate, the positions of the adjusting plates corresponding to the clamping rods all slide radially A give-way slider is dynamically installed, and the give-way slider is rotatably connected to the corresponding clamping rod. A height adjustment group is connected between the adjustment plate and the chain plate. The height position of the tooth body clamped by the clamping group is adjusted by the height adjustment group, so that the distance between the connecting hole of the tooth body and the induction coil remains unchanged; a shaking group is connected between the height adjustment group and the adjustment plate, and a toggle group is connected between the height adjustment group and the clamping rod. When the clamping group drives the tooth body to rotate, the shaking group and the adjustment plate cooperate to shake the tooth body up and down through the clamping group to ensure that the brazing material is evenly filled in the welding place. At the same time, the clamping rod is driven by the toggle group to rotate with its own central axis as the reference, so that the clamping position of the clamping group on the tooth body continues to change.

[0006] Preferably, the driving group includes an active member installed on the chain plate, and a plurality of circumferentially evenly arranged transmission sleeves are slidably installed on the active member. A sliding block is slidably installed in the transmission sleeve, and the upper end of the sliding block is rotatably connected to the clamping rod, and the upper end of the clamping rod passes through the transmission sleeve, and a torsion spring is installed at the rotational connection between the clamping rod and the sliding block.

[0007] Preferably, the clamping group includes a clamping sleeve concentrically arranged outside the upper end of the clamping rod, the clamping sleeve is rotatably connected to the clamping rod via a rotating plate fixedly mounted at its lower end, and a one-way bearing is also installed between the clamping sleeve and the clamping rod.

[0008] Preferably, the height adjustment group includes an adjustment ring distributed above the chain plate, an adjustment assembly is connected between the adjustment ring and the corresponding chain plate, a connecting ring is rotatably installed on the inner wall of the adjustment ring, and the connecting ring is connected to the adjustment plate for upward and downward sliding via a plurality of circumferentially evenly arranged elastic connecting rods.

[0009] Preferably, the adjustment assembly includes a plurality of circumferentially arranged guide rods slidably mounted on an adjustment ring, and the lower ends of the guide rods are fixedly connected to corresponding chain plates. An adjustment screw is threadedly connected to the adjustment ring, and the adjustment screw and the chain plate are rotatably connected.

[0010] Preferably, the shaking group includes a plurality of circumferentially evenly arranged matching blocks fixedly mounted on the upper side of the adjustment plate, and the upper end surfaces of the matching blocks are configured as inclined surfaces.

[0011] Preferably, the shaking group also includes a plurality of L-shaped downward pressure rods fixedly mounted on the upper side of the adjustment ring and evenly arranged in the circumferential direction. When the adjustment plate rotates, the L-shaped downward pressure rods and the inclined surfaces of the matching blocks cooperate to drive the adjustment plate to move downward.

[0012] Preferably, the shifting group includes a matching sleeve movably mounted on the outside of the clamping rod, and the clamping rod passes through the matching sleeve, and two circumferentially evenly arranged arc-shaped shifting blocks are fixedly mounted on the inside of the matching sleeve, and an inclined surface is provided on the upper side of the arc-shaped shifting blocks.

[0013] Preferably, the matching sleeve is connected via two symmetrically arranged L-shaped connecting rods and a connecting ring, and the connecting ends of the L-shaped connecting rod and the connecting ring are configured as a telescopic structure.

[0014] Preferably, two circumferentially evenly arranged matching columns are fixedly mounted on the outside of the clamping rod, and the matching columns are arranged in contact with the corresponding arc-shaped shifting block inclined surfaces. When the clamping rod moves downward, the matching columns drive the clamping rod to rotate under the action of the corresponding arc-shaped shifting block inclined surfaces.

[0015] The beneficial effects of the present invention are: 1. The height adjustment group provided in the present invention adjusts the height of the clamping group through the adjusting plate, so as to adjust the height position of the tooth body clamped by the clamping group, and then for tooth bodies of different sizes and specifications, ensure that the distance between the top of the tooth body and the induction coil will not change, thereby ensuring the heating effect of tooth bodies of different sizes and specifications and alloy cutter heads, thereby improving the welding quality and consistency of cutting teeth of different sizes and specifications.

[0016] 2. When the alloy cutter head and the tooth body are heated in a state of continuous low-speed rotation, the present invention arranges a shaking group and an adjustment plate to cooperate to drive the clamping group to shake the tooth body and the alloy cutter head up and down at a small frequency, so that the brazing material between the alloy cutter head and the tooth body is evenly distributed under the action of shaking, thereby improving the welding quality of the cutting teeth, and no additional driving source is required, so that the up and down shaking frequency is adapted to the speed of continuous low-speed rotation.

[0017] 3. The present invention arranges a toggle group to drive the clamping rod to rotate with its own central axis as a reference, so that the clamping group causes the tooth body to rotate relative to the clamping rod through friction, thereby realizing continuous change of the clamping position of the clamping group on the tooth body, preventing continuous clamping of a single position of the tooth body, which causes the surface of the tooth body to be unevenly heated, thereby ensuring the processing quality of subsequent cutting teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a three-dimensional structural schematic diagram of some parts of the present invention.

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the elastic connecting rod, the matching block and the toggle group of the present invention.

[0022] Figure 4 It is a cross-sectional view of the clamping rod, the transmission sleeve, the sliding block, the clamping sleeve, the rotating plate and the one-way bearing of the present invention.

[0023] Figure 5 It is a three-dimensional structural schematic diagram of the arc-shaped shifting block, the matching column, the matching sleeve and the clamping rod of the present invention.

[0024] Figure 6 yes Figure 2 Schematic diagram of the three-dimensional structure of the parts clamping the cutting teeth.

[0025] Figure 7 It is a schematic diagram of the three-dimensional structure of the pick.

[0026] 1. Processing seat; 2. Chain conveyor; 21. Chain plate; 3. Clamping unit; 31. Driving group; 311. Active part; 312. Transmission sleeve; 313. Sliding block; 32. Clamping rod; 321. Matching column; 33. Clamping group; 331. Clamping sleeve; 332. Rotating plate; 333. One-way bearing; 4. Adjusting matching unit; 41. Adjusting plate; 42. Give way slider; 43. Height adjustment group; 431. Adjusting ring; 432. Connecting ring; 433. Elastic connecting rod; 434. Guide rod; 435. Adjusting screw; 44. Shaking group; 441. Matching block; 442. L-shaped pressing rod; 45. Toggle group; 451. Matching sleeve; 452. Arc-shaped toggle block; 453. L-shaped connecting rod. DETAILED DESCRIPTION

[0027] The embodiments described below are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the art or the product instructions shall be followed.

[0028] See also Figure 1 and Figure 6 A coal mine anchor cutting machine cutting tool processing fixture includes a processing seat 1, a chain conveyor 2 is installed on the processing seat 1, the chain conveyor 2 includes a plurality of chain plates 21, a clamping unit 3 is installed on the chain plate 21, and an adjustment and matching unit 4 is connected between the clamping unit 3 and the corresponding chain plate 21.

[0029] The present invention is used for clamping picks. The present invention can adjust the height position of the clamped pick body. When forming picks of different sizes and specifications, it ensures that the distance between the connection hole of the pick body and the induction coil does not change, thereby ensuring the welding and forming quality of the picks. At the same time, the present invention can jitter the pick body up and down to ensure that the filler metal is evenly filled between the alloy cutting head and the pick body, further ensuring the welding and forming quality of the picks. Moreover, the present invention ensures that the surface of the cylindrical part of the pick body is evenly heated by continuously changing the clamping position of the cylindrical part of the pick body, improving the forming quality of the picks and ensuring the consistency of batch pick forming.

[0030] Specifically, first, the operator places the pick body in the clamping unit 3 on the right side of the chain conveyor 2, and places the alloy cutting head and the filler metal on the pick body. Then, the operator controls the adjustment and cooperation unit 4 to adjust the height position of the pick body clamped by the clamping unit 3 according to the size specification of the pick body. Start the chain conveyor 2 to drive the clamping unit 3 and the clamped pick body to move intermittently to the left. The pick body moves intermittently to the left into the existing induction heating system (the induction heating system is prior art, and its specific structure is not described here and is not shown in the figure), and controls the clamping unit 3 at the corresponding position in the induction heating system to drive the corresponding pick body to rotate, so that the induction heating system evenly heats the alloy cutting head and the pick body. At the same time, the adjustment and cooperation unit 4 drives the alloy cutting head and the pick body to jitter up and down through the clamping unit 3 to ensure that the filler metal is evenly filled between the alloy cutting head and the pick body, and the adjustment and cooperation unit 4 can continuously change the clamping position of the clamping unit 3 on the pick body to make the surface of the pick body evenly heated. Finally, when the chain conveyor 2 drives the welded pick to move intermittently to the left to the limit position, control the clamping unit 3 to release the clamping, and the chain conveyor 2 continues to convey the welded pick body to the subsequent processing station.

[0031] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown in, the clamping unit 3 includes a driving group 31 installed on the chain plate 21. A plurality of clamping rods 32 are circumferentially and evenly arranged on the driving group 31. A clamping group 33 is installed on the upper side of the clamping rod 32. The driving group 31 drives the clamping group 33 to clamp the pick body through the clamping rod 32, and the driving group 31 also drives the pick body to rotate through the clamping group 33.

[0032] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 6The adjustment and matching unit 4 includes an adjustment plate 41 arranged above the chain plate 21, and the positions of the adjustment plate 41 corresponding to the clamping rod 32 are radially slidably installed with a giving way slider 42, and the giving way slider 42 is rotatably connected to the corresponding clamping rod 32, and a height adjustment group 43 is connected between the adjustment plate 41 and the chain plate 21, and the height adjustment group 43 adjusts the height of the tooth body connecting block clamped by the clamping group 33 through the adjustment plate 41; a shaking group 44 is connected between the height adjustment group 43 and the adjustment plate 41, and a toggle group 45 is connected between the height adjustment group 43 and the clamping rod 32.

[0033] The clamping unit 3 is used to clamp the tooth body, and the adjusting and matching unit 4 is used to cooperate with the clamping unit 3 to adjust the height of the clamped tooth body; specifically, the operator places the tooth body between a plurality of clamping groups 33, the clamping group 33 supports the lower side of the tooth body shoulder, and there is a certain distance between the lower end surface of the tooth body and the adjusting plate 41. When the induction coil heats the tooth body, the adjusting plate 41 is located below the induction coil, so that only the clamping group 33 is located in the heating area of the induction coil at this time, and then the driving group 31 is controlled to drive the clamping rod 32 to move inward synchronously, and the clamping rod 32 drives the clamping group 33 to move the clamping tooth body inward synchronously, and the clamping rod 32 also drives the corresponding giving way slider 42 to move synchronously, and then drives the adjustment plate 41 to move up and down by controlling the height adjustment group 43. The adjustment plate 41 drives the corresponding clamping rod 32 to move up and down through the giving way slider 42, thereby realizing the height adjustment of multiple clamping rods 32, and then realizing the adjustment of the height position of the tooth body clamped by the clamping group 33, ensuring that when forming picks of different sizes and specifications, the distance between the tooth body connecting hole and the induction coil will not change, thereby ensuring the welding forming quality of the pick.

[0034] When the tooth body moves into the existing induction heating system, the corresponding driving group 31 is started to drive the clamping rod 32 to rotate with the central axis of the adjustment plate 41 as the reference, and the clamping rod 32 drives the clamped tooth body to rotate through the clamping group 33, so that the induction heating system evenly heats the tooth body and the alloy cutter head. At the same time, under the action of the shaking group 44, the clamping group 33 drives the clamped tooth body to shake up and down, so that the brazing material between the alloy cutter head and the tooth body is evenly distributed under the shaking action. At the same time, the toggle group 45 makes the clamping rod 32 rotate with its own central axis as the reference, so that the clamping position of the clamping group 33 on the cutting tooth continues to change, so as to achieve uniform heating of the tooth body. When the cutting tooth welding is completed, the driving group 31 is controlled to drive multiple clamping rods 32 to move outward synchronously, so that the clamping rod 32 drives the clamping group 33 to release the cutting tooth.

[0035] See also Figure 1 , Figure 2 , Figure 3 and Figure 4, the driving group 31 includes a driving member 311 installed on the link plate 21. A plurality of driving sleeves 312 arranged circumferentially and evenly are slidably installed on the driving member 311. A sliding block 313 is slidably installed up and down inside the driving sleeve 312. The upper end of the sliding block 313 is rotatably connected to the clamping rod 32, and the upper end of the clamping rod 32 penetrates through the driving sleeve 312. A torsion spring is installed at the rotational connection between the clamping rod 32 and the sliding block 313.

[0036] It should be noted that the driving member 311 in the present invention adopts the prior art, which can drive a plurality of driving sleeves 312 to move synchronously in and out, and then drive a plurality of clamping rods 32 to move synchronously in and out by the driving sleeves 312. Moreover, the driving member 311 can also finally drive the clamped tooth body to rotate with the tooth body central axis as the reference through the driving sleeves 312.

[0037] The driving group 31 is used to drive the clamping group 33 to clamp the pick through the clamping rod 32, and the driving group 31 is also used to drive the tooth body to rotate through the clamping group 33; specifically, when starting the driving member 311 to drive a plurality of driving sleeves 312 to move synchronously inward, the driving sleeves 312 drive a plurality of clamping groups 33 to move synchronously inward through the clamping rods 32 and clamp the tooth body. When the tooth body moves into the existing induction heating system, by starting the corresponding driving member 311 to drive all the driving sleeves 312 to rotate slowly with the central axis of the adjusting plate 41 as the reference, the driving sleeves 312 drive the tooth body to rotate through the clamping rods 32 and the clamping group 33, so that the induction heating system uniformly heats the tooth body and the alloy cutting head. When the pick welding is completed, control the driving member 311 to drive a plurality of driving sleeves 312 to move synchronously outward, so that the clamping group 33 releases the clamped tooth body.

[0038] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 6 , the height adjustment group 43 includes an adjustment ring 431 distributed above the link plate 21. An adjustment component is connected between the adjustment ring 431 and the corresponding link plate 21. A connection ring 432 is rotatably installed on the inner side wall of the adjustment ring 431. The connection ring 432 is slidably connected up and down with the adjustment plate 41 through a plurality of elastic connection rods 433 arranged circumferentially and evenly; the elastic connection rods 433 are provided with a large elastic force, and when the clamping group 33 clamps the tooth body, the elastic connection rods 433 will not be compressed under the action of the total gravity of the tooth body, the alloy cutting head and the filler metal.

[0039] Refer to Figure 2 、 Figure 3 and Figure 6 , the adjustment component includes a plurality of circumferentially arranged guide rods 434 slidably installed on the adjustment ring 431, and the lower ends of the guide rods 434 are fixedly connected to the corresponding link plates 21. An adjustment screw 435 is threadedly connected to the adjustment ring 431, and the adjustment screw 435 is rotatably connected to the link plate 21.

[0040] The height adjustment group 43 is used to adjust the height position of the tooth body; specifically, screwing the adjustment screw 435 drives the adjustment ring 431 to move through threaded cooperation, and the adjustment ring 431 only moves up and down under the guiding limit of the guide rod 434. The adjustment ring 431 drives the adjustment plate 41 to move up and down through the connecting ring 432 and the elastic connecting rod 433. The adjustment plate 41 drives the corresponding clamping rod 32 to move up and down through the giving way slider 42, so as to realize the synchronous adjustment of the height of multiple clamping rods 32, and then realize the height adjustment of the tooth body clamped by the clamping group 33, to ensure that when forming picks of different sizes, the distance between the connecting hole of the tooth body and the induction coil will not change, thereby ensuring the welding forming quality of the pick.

[0041] See also Figure 1 , Figure 2 , Figure 3 and Figure 6 The shaking group 44 includes a plurality of circumferentially evenly arranged matching blocks 441 fixedly mounted on the upper side of the adjusting plate 41, and the upper end surface of the matching block 441 is set as an inclined surface; the shaking group 44 also includes a plurality of circumferentially evenly arranged L-shaped downward pressure rods 442 fixedly mounted on the upper side of the adjusting ring 431. When the adjusting plate 41 rotates, the L-shaped downward pressure rod 442 and the inclined surface of the matching block 441 cooperate to drive the adjusting plate 41 to move downward.

[0042] The shaking group 44 is used to cooperate with the adjustment plate 41 to shake the tooth body up and down through the clamping group 33; specifically, when the corresponding active member 311 is started to drive all the transmission sleeves 312 to rotate as a whole with the central axis of the adjustment plate 41 as the reference, the transmission sleeve 312 drives the adjustment plate 41 to rotate through the clamping rod 32 and the yielding slider 42, the adjustment plate 41 drives the connecting ring 432 to rotate through the elastic connecting rod 433, and the adjustment plate 41 drives the matching block 441 to rotate, and the adjusting ring 431 is in a stationary state under the action of the guide rod 434. When the matching block 441 rotates to the corresponding position of the L-shaped pressing rod 442, the inclined surface of the matching block 441 and the horizontal section of the L-shaped pressing rod 442 cooperate to make the matching block 441 and the adjustment plate 41 as a whole The elastic connecting rod 433 is slightly moved downward and slightly compressed. When the matching block 441 and the horizontal section of the L-shaped pressing rod 442 are separated, the adjustment plate 41 returns to its initial position under the action of the rebound force of the elastic connecting rod 433, and the matching block 441 and the L-shaped pressing rod 442 are both provided with multiple ones so that the adjustment plate 41 can continuously generate up and down shaking. The adjustment plate 41 drives the clamping rod 32 to shake up and down through the giving way slider 42, so that the clamping rod 32 drives the clamped tooth body to shake up and down through the clamping group 33. The solder between the alloy cutter head and the tooth body is evenly distributed under the action of shaking, and the clamping group 33 drives the clamped tooth body to shake up and down with a smaller amplitude and frequency, so that the alloy cutter head will not move out of the tooth body under the action of shaking.

[0043] See also Figure 1 ,Figure 2 , Figure 3 , Figure 4 and Figure 6 The clamping group 33 includes a clamping sleeve 331 concentrically arranged outside the upper end of the clamping rod 32. The clamping sleeve 331 is rotatably connected to the clamping rod 32 through a rotating plate 332 fixedly installed at its lower end. A one-way bearing 333 is also installed between the clamping sleeve 331 and the clamping rod 32.

[0044] See also Figure 3 and Figure 5 The toggle group 45 includes a matching sleeve 451 movably mounted on the outside of the clamping rod 32, and the clamping rod 32 passes through the matching sleeve 451, and two circumferentially evenly arranged arc-shaped shifting blocks 452 are fixedly mounted on the inside of the matching sleeve 451, and an inclined surface is provided on the upper side of the arc-shaped shifting blocks 452; the matching sleeve 451 is connected to the connecting ring 432 through two symmetrically arranged L-shaped connecting rods 453, and the connecting ends of the L-shaped connecting rods 453 and the connecting ring 432 are arranged as a telescopic structure; two circumferentially evenly arranged matching columns 321 are fixedly mounted on the outside of the clamping rod 32, and the matching columns 321 are contacted with the corresponding inclined surfaces of the arc-shaped shifting blocks 452. When the clamping rod 32 moves downward, the matching columns 321 drive the clamping rod 32 to rotate under the action of the corresponding inclined surfaces of the arc-shaped shifting blocks 452.

[0045] It should be noted that the one-way bearing 333 adopts the existing technology, which can rotate freely in one direction and is locked in the other direction.

[0046] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6The clamping group 33 is used to clamp the cutting teeth, and the toggle group 45 is used to continuously change the clamping position of the clamping group 33 on the tooth body; specifically, the tooth body is placed on the opposite sides of multiple clamping sleeves 331, and multiple clamping sleeves 331 are supported on the lower side of the tooth body shoulder. When the starting active member 311 drives multiple transmission sleeves 312 to move inward synchronously, the transmission sleeve 312 drives the clamping sleeve 331 to move inward synchronously and clamp the tooth body column through the clamping rod 32 and the rotating plate 332. At this time, the lower end surface of the clamping sleeve 331 is located below the lower end surface of the tooth body. When the induction coil heats the tooth body, only the part of the tooth body clamped by the upper part of the clamping sleeve 331 is located in the heating area of the induction coil. At the same time, the clamping rod 32 drives the matching sleeve 451 to move synchronously and stretch the L-shaped connecting rod 453. When the clamping rod 32 moves downward, the matching sleeve 451 passes through the The L-shaped connecting rod 453 and the connecting ring 432 are connected, so that the matching sleeve 451 cannot rotate with its center axis as the reference, and the clamping rod 32 drives the matching column 321 to move downward, and the matching column 321 and the inclined surface of the arc-shaped shift block 452 cooperate to drive the corresponding clamping rod 32 to rotate, but at this time the one-way bearing 333 is in a locked state, so the clamping rod 32 drives the transmission sleeve 312 to rotate together through the one-way bearing 333, and rotates with the center axis of the clamping rod 32 as the reference, because the transmission sleeve 312 is provided with multiple and circumferentially uniformly clamped on the outside of the cylindrical part of the tooth body, and the overall mass of the pick is relatively light, the transmission sleeve 312 rotates synchronously, in the same direction, and at the same speed, and then the multiple self-rotating transmission sleeves 312 use friction to make the tooth body rotate relative to the transmission sleeve 312, thereby changing the clamping position of the transmission sleeve 312 on the tooth body.

[0047] When the clamping rod 32 moves upward to the initial position, the matching column 321 does not contact the arc-shaped shift block 452, and the clamping rod 32 rotates to the initial position under the action of the torsion spring at the rotation connection between it and the sliding block 313. During this process, the one-way bearing 333 is in an unlocked state, that is, the clamping rod 32 rotates relative to the clamping sleeve 331, and then when the clamping rod 32 shakes up and down, the clamping sleeve 331 can intermittently rotate in one direction, so that the clamping position of the clamping sleeve 331 on the tooth body changes intermittently, and then the surface of the tooth body can be evenly heated. When the starting active part 311 drives multiple transmission sleeves 312 to move outward synchronously, the transmission sleeve 312 drives multiple clamping sleeves 331 to loosen the tooth body through the clamping rod 32 and the rotating plate 332.

[0048] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

[0049] In the embodiments of the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the horizontal height of the first feature is less than that of the second feature.

[0050] In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, the terms "arranged", "connected", "installed" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, an integral connection or a sliding connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0051] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A cutting pick processing fixture for a coal mine roadheader, comprising a processing base and a chain conveyor mounted thereon. The chain conveyor includes a plurality of chain plates, and a clamping unit is mounted on the chain plates. It is characterized in that, An adjusting and matching unit is connected between the clamping unit and the corresponding chain plate; The clamping unit includes a driving group installed on the chain plate, a plurality of clamping rods evenly arranged in the circumferential direction are installed on the driving group, a clamping group is installed on the upper side of the clamping rod, and the clamping group clamps the tooth body and drives the tooth body to rotate through the driving group; The adjustment and matching unit includes an adjustment plate arranged above the chain plate, and positions on the adjustment plate corresponding to the clamping rods are radially slidably installed with a giving way slider, and the giving way slider is rotatably connected to the corresponding clamping rod. A height adjustment group is connected between the adjustment plate and the chain plate, and the height position of the tooth body clamped by the clamping group is adjusted by the height adjustment group, so that the distance between the connection hole of the tooth body and the induction coil remains unchanged; A shaking group is connected between the height adjustment group and the adjustment plate, and a toggle group is connected between the height adjustment group and the clamping rod. When the clamping group drives the tooth body to rotate, the shaking group and the adjustment plate cooperate to shake the tooth body up and down through the clamping group to ensure that the brazing material is evenly filled in the welding point. At the same time, the clamping rod is driven by the toggle group to rotate based on its own central axis, so that the clamping position of the clamping group on the tooth body continues to change.

2. The cutting pick processing fixture for a coal mine roadheader according to claim 1, characterized in that, The driving group includes an active member installed on a chain plate, on which a plurality of circumferentially evenly arranged transmission sleeves are slidably installed, a sliding block is slidably installed in the transmission sleeve, the upper end of the sliding block is rotatably connected to a clamping rod, and the upper end of the clamping rod passes through the transmission sleeve, and a torsion spring is installed at the rotation connection between the clamping rod and the sliding block.

3. A cutting pick processing fixture for a coal mine roadheader according to claim 1, characterized in that, The clamping group includes a clamping sleeve arranged concentrically outside the upper end of the clamping rod. The clamping sleeve is rotatably connected to the clamping rod through a rotating plate fixedly installed at its lower end. A one-way bearing is also installed between the clamping sleeve and the clamping rod.

4. A cutting pick processing fixture for a coal mine roadheader-anchoring machine according to claim 1, characterized in that, The height adjustment group includes an adjustment ring distributed above the chain plate, an adjustment assembly is connected between the adjustment ring and the corresponding chain plate, a connecting ring is rotatably installed on the inner wall of the adjustment ring, and the connecting ring is connected to the adjustment plate for up and down sliding through a plurality of circumferentially evenly arranged elastic connecting rods.

5. A cutting pick processing fixture for a coal mine roadheader according to claim 4, characterized in that, The adjustment assembly includes a plurality of circumferentially arranged guide rods slidably mounted on an adjustment ring, and the lower ends of the guide rods are fixedly connected to corresponding chain plates. An adjustment screw is threadedly connected to the adjustment ring, and the adjustment screw and the chain plate are rotatably connected.

6. The machining fixture for the pick of a coal mine roadheader according to claim 4, characterized in that, The shaking group includes a plurality of circumferentially evenly arranged matching blocks fixedly mounted on the upper side of the adjustment plate, and the upper end surfaces of the matching blocks are configured as inclined surfaces.

7. A cutting pick processing fixture for a coal mine roadheader-anchoring machine according to claim 6, characterized in that, The shaking group also includes a plurality of L-shaped downward pressure rods fixedly mounted on the upper side of the adjustment ring and evenly arranged in the circumferential direction. When the adjustment plate rotates, the L-shaped downward pressure rods and the inclined surfaces of the matching blocks cooperate to drive the adjustment plate to move downward.

8. A cutting pick processing fixture for a coal mine roadheader according to claim 4, characterized in that The shifting group comprises a matching sleeve movably mounted on the outside of the clamping rod, and the clamping rod passes through the matching sleeve. Two arc-shaped shifting blocks evenly arranged in the circumferential direction are fixedly mounted on the inside of the matching sleeve, and an inclined surface is provided on the upper side of the arc-shaped shifting blocks.

9. The machining fixture for pick of a coal mine roadheader-anchoring machine according to claim 8, wherein, The matching sleeve is connected via two symmetrically arranged L-shaped connecting rods and a connecting ring, and the connecting ends of the L-shaped connecting rod and the connecting ring are configured as a telescopic structure.

10. A cutting pick processing fixture for a coal mine roadheader according to claim 8, characterized in that, Two circumferentially evenly arranged matching columns are fixedly installed on the outside of the clamping rod, and the matching columns are arranged in contact with the corresponding arc-shaped shifting block inclined surfaces. When the clamping rod moves downward, the matching columns drive the clamping rod to rotate under the action of the corresponding arc-shaped shifting block inclined surfaces.

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