Pick assembly and shearer drum with the pick assembly

Abstract

The present invention discloses a pick assembly and a shearer drum having the pick assembly. The pick assembly includes: a fixed seat and picks; a rotating mechanism, there are a plurality of the rotating mechanisms, and the plurality of rotating mechanisms are arranged at intervals along the circumference of the fixed seat. Each of the rotating mechanisms is rotatably arranged on the fixed seat between a clamping position and a release position. When in the clamping position, the picks can be clamped between the plurality of rotating mechanisms, and when in the release position, the rotating mechanism disengages from the picks. According to the pick assembly of the embodiment of the present invention, the replacement of the picks is facilitated by the rotation of the rotating mechanism between the clamping position and the release position, so that the replacement of the picks is convenient and fast, and the working efficiency during the disassembly and installation of the picks is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of coal mining equipment, and particularly relates to a pick assembly and a shearer drum having the pick assembly. Background Art

[0002] In recent years, with the increase in coal mining intensity and the continuous improvement of the structural performance of shearers, the power of shearers has been increasing continuously. To adapt to the current high-efficiency mining, the requirements for shearer drums have also been continuously improved. Therefore, improving the comprehensive performance of shearer helical drums has become a crucial issue, especially the mechanical properties of the end tooth seats. Since the end tooth seats are located on the end disc of the drum and the working environment is extremely harsh, the end picks on the end tooth seats are extremely prone to wear and fracture during operation, and the picks and tooth seats are not convenient to disassemble and install, which affects the normal operation of the drum and reduces the work efficiency. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to some extent. For this purpose, an embodiment of the present invention provides a pick assembly and a shearer drum having the pick assembly.

[0004] A pick assembly according to an embodiment of the present invention includes: a fixed seat and a pick; a rotating mechanism. There are a plurality of the rotating mechanisms, and the plurality of rotating mechanisms are arranged at intervals along the circumferential direction of the fixed seat. Each rotating mechanism is rotatably arranged on the fixed seat between a clamping position and a releasing position. When in the clamping position, the pick can be clamped between the plurality of rotating mechanisms, and when in the releasing position, the rotating mechanism disengages from the pick.

[0005] The pick assembly according to the embodiment of the present invention facilitates the replacement of the pick through the rotation of the rotating mechanism between the clamping position and the releasing position, making the replacement of the pick convenient and fast, and improving the work efficiency during the disassembly and installation of the pick.

[0006] Optionally, the pick includes a pick body and a limiting portion. The limiting portion is arranged at one end of the pick body close to the fixed seat, and each rotating mechanism can be engaged with the limiting portion.

[0007] Optionally, the limiting portion is a limiting protrusion or a limiting groove arranged on the pick body.

[0008] Optionally, the rotating mechanism includes a rotating member and a pushing assembly. The rotating member has a first end and a second end. When in the clamping position, the first end is engaged with the limiting portion, and the second end is hinged to the fixed seat; the pushing assembly can drive the first ends of each rotating member to approach or move away from each other so that each rotating mechanism can be switched between the clamping position and the releasing position.

[0009] Optionally, the fixed seat has an installation cavity. The propulsion assembly includes a propulsion member and a plurality of push rods. At least a part of the propulsion member is disposed in the installation cavity. There is an installation position between the first end and the second end of each rotating member. One ends of the plurality of push rods are correspondingly connected to the installation position. The other end of each push rod can abut against the side wall of the propulsion member. The propulsion member can reciprocate in a first direction so as to drive the push rods to cooperate with the rotating members to be pushed from the release position to the clamping position. Optionally, one end of the push rod is hinged to the rotating member. Optionally, each push rod penetrates through the wall surface of the fixed seat. One ends of the plurality of push rods are correspondingly connected to the installation position. The other end of each push rod can abut against the side wall of the propulsion member.

[0010] Optionally, the propulsion member includes a propulsion block and a driving rod. The dimension of the propulsion block in a second direction increases in the direction away from the pick in the first direction. The driving rod is connected to the fixed seat. The driving rod is located at one end of the installation cavity and is connected to the propulsion block. The driving rod can drive the propulsion block to reciprocate in the first direction so as to drive the push rods to cooperate with the rotating members to switch between the release position and the clamping position. The second direction is perpendicular to the first direction. The first direction is consistent with the axial direction of the pick. Optionally, the driving rod extends in the first direction. The driving rod has a threaded portion. The driving rod penetrates through the fixed seat. Specifically, the driving rod is a threaded rod. The fixed seat is also provided with a threaded through hole. The threaded rod passes through the threaded through hole and is rotatably connected to the propulsion block. And the threaded rod can drive the propulsion block to move along the first direction.

[0011] Optionally, it further includes a limiting member. There are a plurality of limiting members, which correspond to the plurality of rotating mechanisms one by one. The limiting member is located between the first end and the push rod in the first direction. One end of the limiting member is connected to the fixed seat. The other end of the limiting member extends out of the fixed seat and the other end of the limiting member is hinged to the rotating member. Optionally, the limiting member includes a rotating shaft and an ear plate. The rotating shaft penetrates through the rotating member and the rotating member can rotate around the rotating shaft. One end of the ear plate is connected to the fixed seat. The other end of the ear plate extends out of the fixed seat and the ear plate is sleeved on the rotating shaft.

[0012] Optionally, each rotating member includes a main body portion and a hook portion. One end of the main body portion is hinged to the fixed seat. The other end of the main body portion is connected to the hook portion. The hook portion has the first end. The hook portion can be engaged with the limiting portion.

[0013] The shearer drum according to an embodiment of the present invention includes: a drum body; and a pick assembly, the pick assembly being the pick assembly according to an embodiment of the present invention, and the pick assembly being provided on the outer circumferential surface of the drum body.

[0014] The shearer drum according to an embodiment of the present invention can quickly replace the pick assembly and picks, improving the working efficiency during disassembly and installation of the picks.

[0015] Optionally, a groove is provided on the outer circumferential surface of the drum body; the shearer drum further includes a mounting sleeve, the mounting sleeve includes a mounting sleeve body and a connecting member, the connecting member is provided on the outer surface of the mounting sleeve body, the mounting sleeve body is sleeved on the picks of the pick assembly, the mounting sleeve has an installed state and a disassembled state, and the connecting member of the mounting sleeve in the installed state is inserted into the groove, and the connecting member of the mounting sleeve in the disassembled state is disengaged from the groove.

[0016] Optionally, it further includes a fixing column, a first hole is provided on the first working surface of the drum body, a second hole is provided on the connecting member, the first hole corresponds to the second hole, the fixing column passes through the first hole and the second hole and the fixing column cooperates with each of the first hole and the second hole; and an elastic member group, the elastic member group is located in the groove of the drum body, the elastic member group is provided between the connecting member and the inner wall of the drum body, and the elastic member group is in a deformed state so as to constantly push the connecting member towards the opening of the groove. Description of the Drawings

[0017] Figure 1 is a schematic structural view of a pick assembly according to an embodiment of the present invention.

[0018] Figure 2 is a schematic structural view of a shearer drum according to an embodiment of the present invention.

[0019] Figure 3 is a schematic installation view of a pick assembly according to an embodiment of the present invention.

[0020] Reference Signs:

[0021] Pick assembly 100; Shearer drum 200;

[0022] Rotating mechanism 1; Rotating member 11; First end 111; Second end 112; Pushing assembly 12; Pushing member 121; Pushing block 1211; Driving rod 1212; Pushing rod 122;

[0023] Pick 2; Limiting portion 21;

[0024] Fixed seat 3; Installation cavity 31;

[0025] Position-limiting member 4; Rotating shaft 41; Ear plate 42;

[0026] Roller body 5; First working surface 51; Groove 52

[0027] Mounting sleeve 6; Mounting sleeve body 61; Connecting member 62;

[0028] Fixed column 7; First hole 71; Second hole 72;

[0029] Elastic member group 8. Specific implementation manner

[0030] The embodiments of the present invention will be described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present invention and should not be construed as a limitation to the present invention.

[0031] As Figures 1 - 3 shown, a pick assembly 100 according to an embodiment of the present invention includes a fixed seat 3, picks 2 and a rotating mechanism 1. There are multiple rotating mechanisms 1, and the multiple rotating mechanisms 1 are arranged at intervals along the circumference of the fixed seat 3. That is to say, the rotating mechanism 1 is arranged on the fixed seat 3. When there are two rotating mechanisms 1, the two rotating mechanisms 1 are symmetrically distributed on both sides of the fixed seat 3. When there are more than three rotating mechanisms 1, the rotating mechanisms 1 are arranged at intervals along the circumference of the fixed seat 3.

[0032] Each rotating mechanism 1 is rotatably arranged on the fixed seat 3 between a clamping position and a release position. When in the clamping position, the pick 2 can be clamped between the multiple rotating mechanisms 1. When in the release position, the rotating mechanism 1 disengages from the pick 2. In other words, when the rotating mechanism 1 is in the clamping position, the multiple rotating mechanisms 1 clamp the pick 2 and the pick 2 is located in the middle of the multiple rotating mechanisms 1. When the rotating mechanism 1 is in the release position, the rotating mechanism 1 disengages from the pick 2.

[0033] The following refers to Figures 1 - 3 Briefly describe the process of replacing the pick 2 of the pick assembly 100. Before replacing the pick 2, the rotating mechanism 1 of the pick assembly 100 is usually in the clamping position. When the pick 2 is worn and needs to be replaced, first rotate the rotating mechanism 1 to the release position, remove the worn pick 2, and then replace it with a new pick 2. After the new pick 2 is replaced, rotate the rotating mechanism 1 to the clamping position.

[0034] For the pick assembly 100 according to the embodiment of the present invention, through the rotation of the rotating mechanism between the clamping position and the release position to cooperate with the replacement of the pick, the replacement of the pick is convenient and fast, and the working efficiency during the disassembly and installation of the pick is improved.

[0035] As Figures 1 - 3As shown in the figure, a pick assembly 100 according to an embodiment of the present invention includes a fixed seat 3, picks 2, and a rotating mechanism 1. There are multiple rotating mechanisms 1, and the multiple rotating mechanisms 1 are arranged at intervals along the circumferential direction of the fixed seat 3. The pick 2 includes a pick body and a limiting portion 21. The limiting portion 21 is arranged at one end of the pick body close to the fixed seat 3, and each rotating mechanism 1 can be engaged with the limiting portion 21. That is to say, the limiting portion 21 is arranged at the end of the pick body, and it is the end of the end close to the fixed seat 3. Each rotating mechanism 1 can be engaged with the limiting portion 21 when in the clamping position.

[0036] Optionally, the limiting portion 21 is a limiting protrusion or a limiting groove arranged on the pick body. Each rotating mechanism 1 includes a rotating member 11. The rotating member 11 includes a main body portion and a hook portion. One end of the main body portion is hinged to the fixed seat 3, and the other end of the main body portion is connected to the hook portion. The hook portion can be engaged with the limiting portion 21. That is to say, one end of the rotating member 11 in the rotating mechanism 1 is hinged to the fixed seat 3, and the hook portion of the rotating member 11 is engaged with the limiting portion 21. In order to make the rotating member 11 more firmly engaged with the limiting portion 21, the limiting portion 21 is a limiting protrusion or a limiting groove.

[0037] The rotating member 11 has a first end 111 (i.e., the end where the hook portion is located) and a second end 112 (i.e., the end of the main body portion far from the hook portion). When in the clamping position, the first end 111 is engaged with the limiting portion 21, and the second end 112 is hinged to the fixed seat 3. That is to say, the first end 111 of the rotating member 11 of the rotating mechanism 1 in the clamping position is engaged with the limiting portion 21, and the second end 112 of the rotating member 11 is hinged to the fixed seat 3.

[0038] The rotating mechanism 1 further includes a propulsion assembly 12. The propulsion assembly 12 can drive the first ends 111 of each rotating member 1 to approach or move away from each other so that each rotating mechanism 1 can be switched between the clamping position and the release position. That is to say, the propulsion assembly 12 can drive each rotating mechanism 1 to be switched between the clamping position and the release position. When the propulsion assembly 12 drives the rotating mechanism 1 to be in the clamping position, the first ends 111 of the rotating members 1 approach each other. When the propulsion assembly 12 drives the rotating mechanism 1 to be in the release position, the first ends 111 of the rotating members 1 move away from each other.

[0039] The propulsion assembly 12 includes a plurality of push rods 122. There is an installation position between the first end 111 and the second end 112 of each rotating member 1. One ends of the plurality of push rods 122 are correspondingly connected to the installation position. The other end of each push rod 122 can abut against the side wall of the propulsion member 121. That is to say, one end of the push rod 122 is arranged between the first end and the second end of the rotating member 11, and this end of the push rod 122 is connected to the rotating member 11 through the installation position, so as to ensure that the push rod 122 will drive the rotating member 11 to rotate when moving.

[0040] Optionally, one end of the push rod 122 is hinged to the rotating member 11, and the other end of the push rod 122 abuts against the side wall of the pushing member 121.

[0041] Optionally, each push rod 122 is passed through the wall surface of the fixed seat 3, one ends of the plurality of push rods 122 are correspondingly connected to the installation positions, and the other end of each push rod 122 can abut against the side wall of the pushing member 121.

[0042] The fixed seat 3 has an installation cavity 31. The propulsion assembly 12 further includes a pushing member 121. At least a part of the pushing member 121 and the push rod 122 are disposed in the installation cavity 31. The pushing member 121 can reciprocate along a first direction so as to drive the push rod 122 to cooperate with the rotating member 11 to be pushed from the release position to the clamping position. That is to say, a part of the pushing member 121 can move along the first direction in the installation cavity 31. While the pushing member 121 moves along the first direction, it will drive the push rod 122 to move in the installation cavity 31. The movement of the push rod 122 in the installation cavity 31 will drive the rotating member 11 to move from the release position to the clamping position.

[0043] The pushing member 121 includes a pushing block 1211. The dimension of the pushing block 1211 in the second direction (i.e., the dimension of the side wall of the pushing block) increases in the first direction along the direction away from the pick 2. The second direction is perpendicular to the first direction. The first direction is consistent with the axial direction of the pick. The first direction includes opposite third and fourth directions. The third direction is the direction in which the pushing block 1211 is away from the pick 2, and the fourth direction is the direction in which the pushing block 1211 is close to the pick 2. The second direction is also consistent with the inside-outside direction of the installation cavity 31. That is to say, the dimension of the pushing block 1211 in the second direction increases along the third direction, so as to ensure that when the pushing block 1211 moves along the fourth direction, the push rod 122 can move in the second direction along the direction away from the pushing block 1211 under the action of the pushing block 1211, that is, the push rod 122 moves from the inside of the installation cavity 31 to the outside, so as to push the second end 112 of the rotating member 11 along the second direction away from the installation cavity 31, so as to push the rotating member 11 from the release position to the clamping position.

[0044] The pusher 121 further includes a driving rod 1212. The driving rod 1212 is connected to the fixed seat 3. The driving rod 1212 is located at one end of the installation cavity 31 and is connected to the pusher block 1211. The driving rod 1212 can drive the pusher block 1211 to reciprocate in the first direction so as to drive the push rod 122 to cooperate with the rotating member 11 to switch between the release position and the clamping position. The driving rod 1212 is connected to the pusher block 1211. When the driving rod 1212 drives the pusher block 1211 to move along the third direction, the push rod 122 can move inward into the installation cavity 31 in the second direction, so that the rotating member 11 can be switched from the clamping position to the release position. When the driving rod 1212 drives the pusher block 1211 to move along the fourth direction, the push rod 122 can move outward from the installation cavity 31 in the second direction, and the push rod 122 drives the rotating member 11 to rotate from the release position to the clamping position.

[0045] Optionally, the driving rod 1212 extends in the first direction. The driving rod 1212 has a threaded portion. The driving rod 1212 is passed through the fixed seat 3. Specifically, the driving rod 1212 is a threaded rod. A threaded through hole is further provided on the fixed seat 3. The driving rod 1212 passes through the threaded through hole and is rotatably connected to the pusher block 1211, and the driving rod 1212 can drive the pusher block 1211 to move along the first direction. For example, when the driving rod 1212 is rotated forward, the driving rod 1212 can drive the pusher block 1211 to move toward the fourth direction. When the driving rod 1212 is rotated reversely, the driving rod 1212 drives the pusher block 1211 to move toward the third direction.

[0046] The pick assembly 100 according to an embodiment of the present invention further includes a limiting member 4. There are multiple limiting members 4. The multiple limiting members 4 are arranged at intervals along the circumferential direction of the fixed seat 3, and the multiple limiting members 4 correspond to the multiple rotating mechanisms 1 one by one. The limiting member 4 is located between the first end 111 and the push rod 122 in the first direction. One end of the limiting member 4 is connected to the fixed seat 3, and the other end of the limiting member 4 extends out of the fixed seat 3 and the other end of the limiting member 4 is hinged to the rotating member 11. That is to say, one end of the limiting member 4 is provided on the fixed seat 3, and the other end is connected to the rotating member 11, and the rotating member 11 can rotate relative to the limiting member 4. Optionally, the limiting member 4 includes a rotating shaft 41 and an ear plate 4. The rotating shaft 41 passes through the rotating member 11 and the rotating member 11 can rotate around the rotating shaft 41. One end of the ear plate 42 is connected to the fixed seat 3, and the other end of the ear plate 42 extends out of the fixed seat 3 and the ear plate 42 is sleeved on the rotating shaft 41. Optionally, there is one ear plate 42. At this time, the ear plate 42 is located above or below the rotating member 11. Optionally, there are two ear plates 42. The two ear plates 42 are respectively provided above and below the rotating member 11 and sandwich the rotating member 11 in the middle.

[0047] The shearer drum 200 according to an embodiment of the present invention includes a drum body 5 and a pick assembly 100. The pick assembly 100 is the pick assembly 100 according to an embodiment of the present invention, and the pick assembly 100 is provided on the outer peripheral surface of the drum body 5. The fixing seat 3 of the pick assembly 100 is provided on the outer peripheral surface of the drum body 5, so as to connect the pick assembly 100 with the drum body 5, that is, the outer wall of the fixing seat 3 is connected to the outer peripheral surface of the drum body 5. Thus, when the rotating mechanism 1 is in the clamping position, the pick 2 is installed on the drum body 5, and when the rotating mechanism 1 is in the release position, the pick 2 is disengaged from the drum body 5.

[0048] The shearer drum 200 according to an embodiment of the present invention can achieve the quick disassembly of the pick assembly 100, and can also achieve the quick disassembly of the pick 2 through the pick assembly 100, so that the pick assembly 100 and the pick 2 can be quickly replaced, improving the working efficiency of the pick 2 during disassembly and installation.

[0049] Optionally, a groove 52 is formed on the outer peripheral surface of the drum body 5; there are a plurality of grooves 52, and a pick assembly 100 is provided on one side of the opening of each groove 52 on the outer peripheral surface of the drum body 5, and the position of the pick 2 in the pick assembly 100 corresponds to the position of the groove 52.

[0050] The shearer drum 200 further includes a plurality of mounting sleeves 6. Each mounting sleeve 6 includes a mounting sleeve body 61 and a connecting member 62. The connecting member 62 is provided on the outer surface of the mounting sleeve body 61. The mounting sleeve 6 has an installed state and a disassembled state. When the mounting sleeve 6 is in the installed state, the connecting member 62 of the mounting sleeve 6 is inserted into the groove 52, and when the mounting sleeve 6 is in the disassembled state, the connecting member 62 of the mounting sleeve 6 is disengaged from the groove 52. That is, the positions of the plurality of mounting sleeves 6 correspond to the positions of the plurality of grooves 52 one by one, so that the connecting members 62 of the plurality of mounting sleeves 6 can be inserted into the plurality of grooves 52 one by one. When the mounting sleeve 6 is in the installed state, the connecting member 62 is inserted into the groove 52, and when the mounting sleeve 6 is in the disassembled state, the connecting member 62 is disengaged from the groove 52.

[0051] There are multiple pick assemblies 100. A plurality of mounting sleeve bodies 61 are sleeved on the picks 2 of the multiple pick assemblies 100 one by one. The picks 2 penetrate through the mounting sleeve bodies 61 along the axial direction of the mounting sleeve bodies 61, and both ends of the picks 2 extend beyond both ends of the mounting sleeve bodies 61. The mounting sleeve bodies 61 play a certain supporting role for the picks 2. When the mounting sleeve 6 is in the mounted state, the pick 2 can be in the mounting sleeve body 61, and at this time, the rotating mechanism 1 of the pick assembly 100 is in the clamping position. When the mounting device 6 is in the mounted state, the pick 2 can also not be in the mounting sleeve body 61, and at this time, the rotating mechanism 1 of the pick assembly 100 is in the release position. When the mounting sleeve 6 is in the mounted state and the rotating mechanism 1 in the pick assembly 100 is located at the clamping position, if it is necessary to remove the pick 2 and the mounting sleeve 6, it is necessary to first remove the pick 2 from the pick assembly 100 and then remove the mounting sleeve 6 from the drum body 5.

[0052] Optionally, the shearer drum 200 according to an embodiment of the present invention further includes fixing columns 7. There are multiple fixing columns 7. A plurality of first holes 71 are provided on the first working surface 51 of the drum body 5, and second holes 72 are provided on the connecting member 62. The first holes 71 and the second holes 72 correspond to each other one by one. The fixing columns 7 pass through the first holes 71 and the second holes 72 one by one, and the fixing columns 7 are matched with each of the first holes 71 and the second holes 72. Optionally, the first hole 71 is a first threaded hole, the second hole 72 is a second threaded hole, and the fixing column 7 is a threaded fixing column. The fixed threaded column is matched with each of the first threaded hole and the second threaded hole. When the mounting sleeve 6 is in the mounted state, the connecting member 62 is inserted into the groove 52, and then the fixing column 7 is inserted into the corresponding first hole 71 and second hole 72 so that the fixing column 7 is matched with each of the first hole 71 and the second hole 72, thereby fitting the mounting sleeve 6 with the drum body 5 together. When it is necessary to remove the mounting sleeve 6, first take out the fixing column 7 from the first hole 71 and the second hole 72, and then take out the connecting member 62 of the mounting sleeve 6 from the groove 52.

[0053] The shearer drum 200 according to an embodiment of the present invention further includes an elastic member group 8. The elastic member group 8 is located in the groove 52 of the drum body 5. There are multiple elastic member groups 8. The elastic member groups 8 are provided between each connecting member 62 and the inner wall of the drum body 5, and the elastic member groups 8 are in a deformed state so as to constantly push the connecting member 62 towards the opening of the groove 52. The arrangement of the spring assembly 8 makes the installation of the entire mounting sleeve 6 more firm when the connecting member 62 is in the drum body 5, and increases the convenience when disassembling the mounting sleeve.

[0054] Optionally, one end of the elastic assembly 8 is connected to the connecting member 62, and the other end abuts against the inner wall of the drum body 5.

[0055] Optionally, one end of the elastic component 8 is connected to the inner wall of the drum body 5, and the other end abuts against the connecting member 62.

[0056] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0057] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly limited. 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 circumstances.

[0059] In the present invention, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be 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" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0060] In the present invention, terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0061] Although the above embodiments have been shown and described, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made by those of ordinary skill in the art to the above embodiments are within the protection scope of the present invention.

Claims

1. A pick assembly, characterized in that, Comprising: A fixed seat and pick teeth; Rotating mechanisms, there are multiple rotating mechanisms, and the multiple rotating mechanisms are arranged at intervals along the circumference of the fixed seat. Each rotating mechanism is rotatably arranged on the fixed seat between a clamping position and a release position. Wherein, when in the clamping position, the pick teeth can be clamped between the multiple rotating mechanisms, and when in the release position, the rotating mechanism disengages from the pick teeth; The pick teeth include a pick tooth body and a limiting portion. The limiting portion is arranged at one end of the pick tooth body close to the fixed seat, and each rotating mechanism can be engaged on the limiting portion; The rotating mechanism includes a rotating member and a propulsion assembly. The rotating member has a first end and a second end. When in the clamping position, the first end is engaged on the limiting portion, and the second end is hinged to the fixed seat; the propulsion assembly can drive the first ends of each rotating member to approach or move away from each other so that each rotating mechanism can be switched between the clamping position and the release position; The fixed seat has an installation cavity. The propulsion assembly includes a propulsion member and a plurality of push rods. At least a part of the propulsion member is arranged in the installation cavity. There is an installation position between the first end and the second end of each rotating member. One ends of the plurality of push rods are correspondingly connected to the installation position, and the other end of each push rod can abut against the side wall of the propulsion member. The propulsion member can reciprocate along a first direction so as to drive the push rods to cooperate with the rotating member to be pushed from the release position to the clamping position; The pick tooth assembly is arranged on the outer peripheral surface of the drum body of the shearer drum; A groove is formed on the outer peripheral surface of the drum body; the shearer drum further includes an installation sleeve, and the installation sleeve includes an installation sleeve body and a connecting member. The connecting member is arranged on the outer surface of the installation sleeve body. The installation sleeve body is sleeved on the pick teeth of the pick tooth assembly. The installation sleeve has an installation state and a disassembly state. When in the installation state, the connecting member of the installation sleeve is inserted into the groove, and when in the disassembly state, the connecting member of the installation sleeve disengages from the groove; Further comprising a fixing column. A first hole is arranged on the first working surface of the drum body, and a second hole is arranged on the connecting member. The first hole corresponds to the second hole. The fixing column passes through the first hole and the second hole and the fixing column cooperates with each of the first hole and the second hole; and An elastic member group. The elastic member group is located in the groove of the drum body. The elastic member group is arranged between the connecting member and the inner wall of the drum body, and the elastic member group is in a deformed state so as to constantly push the connecting member towards the opening of the groove.

2. The pick assembly according to claim 1, wherein, The limiting portion is a limiting protrusion or a limiting groove arranged on the pick tooth body.

3. The pick tooth assembly according to claim 2, wherein One end of the push rod is hinged to the rotating member.

4. The pick tooth assembly according to claim 2, wherein Each push rod is inserted through the wall surface of the fixed seat. One end of a plurality of the push rods is correspondingly connected to the mounting position, and the other end of each push rod can abut against the side wall of the pushing member.

5. The pick assembly according to claim 4, wherein, The pushing member includes a pushing block and a driving rod. The size of the pushing block in the second direction increases in the direction away from the pick in the first direction. The driving rod is connected to the fixed seat. The driving rod is located at one end of the installation cavity and is connected to the pushing block. The driving rod can drive the pushing block to reciprocate in the first direction so as to drive the push rod to cooperate with the rotating member to switch between the release position and the clamping position. The second direction is perpendicular to the first direction, and the first direction is consistent with the axial direction of the pick. Optionally, the driving rod extends in the first direction. The driving rod has a threaded portion, and the driving rod is inserted through the fixed seat. Specifically, the driving rod is a threaded rod, and the fixed seat is further provided with a threaded through hole. The threaded rod passes through the threaded through hole and is rotatably connected to the pushing block, and the threaded rod can drive the pushing block to move along the first direction.

6. The pick assembly according to claim 4, characterized in that, It further includes a limiting member. There are a plurality of the limiting members, and the plurality of limiting members correspond to the plurality of rotating mechanisms one by one. The limiting member is located between the first end and the push rod in the first direction. One end of the limiting member is connected to the fixed seat, and the other end of the limiting member extends out of the fixed seat and the other end of the limiting member is hinged to the rotating member. Optionally, the limiting member includes a rotating shaft and an ear plate. The rotating shaft penetrates through the rotating member and the rotating member can rotate around the rotating shaft. One end of the ear plate is connected to the fixed seat, and the other end of the ear plate extends out of the fixed seat and the ear plate is sleeved on the rotating shaft.

7. The pick assembly according to any one of claims 3-6, characterized in that, Each rotating member includes a main body portion and a hook portion. One end of the main body portion is hinged to the fixed seat, and the other end of the main body portion is connected to the hook portion. The hook portion has the first end, and the hook portion can be engaged with the limiting portion.

8. A shearer drum, characterized in that, Includes: A drum body; And A pick assembly, the pick assembly being the pick assembly according to any one of claims 1-7, and the pick assembly is provided on the outer peripheral surface of the drum body.

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