CN214576999U - Coal cutter pick anti-throwing device - Google Patents
Coal cutter pick anti-throwing device Download PDFInfo
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- CN214576999U CN214576999U CN202120631781.XU CN202120631781U CN214576999U CN 214576999 U CN214576999 U CN 214576999U CN 202120631781 U CN202120631781 U CN 202120631781U CN 214576999 U CN214576999 U CN 214576999U
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- pick
- seat
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- 239000003245 coal Substances 0.000 title claims description 17
- 238000005520 cutting process Methods 0.000 claims description 28
- 235000014676 Phragmites communis Nutrition 0.000 claims description 14
- 230000000694 effects Effects 0.000 abstract description 5
- 238000013461 design Methods 0.000 abstract description 3
- 238000003825 pressing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005065 mining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000036346 tooth eruption Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The utility model provides a coal-winning machine pick prevents getting rid of and takes off device, including the pick main part, pick seat and fixed connection seat, the mounting hole bottom of pick seat is provided with heavy groove and is provided with the internal thread on its inner wall, be provided with on fixed connection seat's the outer wall with interior screw-thread fit's external screw thread, fixed connection seat includes fixation nut, connect the boss, the spread groove, kicking block and spacing hole, the bottom of pick main part be provided with spread groove complex clamping ring, the side of clamping ring is provided with the three connecting hole that is circular array and distributes, the activity is provided with the briquetting in the connecting hole, the side of pick main part is provided with the spacing groove, the side of pick seat is provided with the screw rod of being connected with the spacing groove, screw rod and pick seat threaded connection, the tip and the pick main part swing joint of screw rod. The utility model has the characteristics of connect the reliability higher, locking performance better and convenient assembling, reasonable in design, simple structure is fit for extensive the popularization.
Description
Technical Field
The utility model belongs to the technical field of coal-winning machine equipment, relate to the pick, especially relate to a coal-winning machine pick prevents getting rid of and takes off device.
Background
The coal mining machine is a large complex system integrating machinery, electricity and hydraulic pressure; the machine is used for cutting bottom slots on the coal working faces of a common medium and small-sized mine underground slowly-inclined thin coal seam and an extremely-thin composite coal seam, so as to achieve the effect of cutting and coal falling; however, when the coal mining machine encounters hard gangue or other geological structures in the coal cutting process, cutting teeth are seriously abraded, and sometimes the cutting teeth are thrown out of a coal machine tooth holder and fall into a conveyor due to damage, so that the conveyor accident is caused; the existing anti-throwing device is in rigid connection, and is easily damaged when encountering hard gangue or other geological structures, and in addition, the anti-throwing device only has one protection, and can directly fall out if being damaged, thereby causing accidents of the conveyor.
The prior patent technology CN205618158U discloses a coal cutter pick anti-throwing device, which comprises a pick body, a pick seat, a fixing screw, a first spring, a clamping block, a movable block, a pull rod, a second spring, a fixing piece, a screw and a top plate; the utility model has the advantages of reasonable and simple structure, low production cost, convenient installation and complete functions; when the cutting pick is installed, the cutting pick body is directly inserted into the cutting pick seat from top to bottom, the clamping block is firstly moved outwards at the bottom of the cutting pick body during insertion, and when the cutting pick body is moved to the bottom, the clamping blocks are clamped in the clamping grooves at two sides of the cutting pick body under the action of the first spring, so that the installation is completed; when needing to be changed, at first rotatory screw makes the roof move down to order about the movable block and move down and impress the fixture block in the hole of pick seat both sides, then just can directly extract the pick main part and change. However, the device has the problem that the cutting pick body is connected with the fixed connecting seat through the screw, and although a belleville spring is added as a locking measure, the situation that the screw is loosened still can occur under the action of high-speed rotation and strong pressure, so that the working performance of the cutting pick is affected.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem that foretell prevent getting rid of and take off the device and exist, provide a reasonable in design, simple structure, connect the higher and better coal-winning machine pick of locking effect of reliability and prevent getting rid of and take off the device.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the coal cutter pick anti-throwing device provided by the utility model comprises a pick body and a pick seat, wherein the pick seat is provided with a mounting hole, the bottom of the mounting hole is provided with a fixed connecting seat connected with the pick body, the bottom end of the mounting hole is provided with a sunken groove, the inner wall of the sunken groove is provided with an internal thread, the outer wall of the fixed connecting seat is provided with an external thread matched with the internal thread, the bottom of the fixed connecting seat is provided with a fixed nut, the top of the fixed connecting seat is provided with a connecting boss extending towards the inside of the mounting hole, the middle of the connecting boss is provided with a connecting groove, the center of the connecting groove is provided with a top block, the bottom of the pick body is provided with a connecting ring matched with the connecting groove, the side surface of the connecting ring is provided with three connecting holes distributed in a circular array, the connecting hole is partial annular, the activity is provided with the briquetting in the connecting hole, the lateral surface and the medial surface of briquetting are the arcwall face and other faces are the plane, the arc length of the lateral surface of briquetting is greater than the arc length of medial surface, be provided with the direction breach towards the kicking block on the medial surface of briquetting, the direction breach is the toper curved surface, the top of kicking block is provided with the direction head, the direction head is the round platform body and cooperates with the toper curved surface, be provided with the spacing hole that corresponds with the connecting hole on the inner wall of spread groove, the side of pick main part is provided with the spacing groove, the side of pick seat is provided with the screw rod of being connected with the spacing groove, screw rod and pick seat threaded connection, the tip and the pick main part swing joint of screw rod.
Preferably, the bottom of the cutting pick body is provided with a buffer blind hole corresponding to the connecting ring, and the buffer blind hole is matched with the top block.
Preferably, the inner wall of the limiting hole is biased with a reed, the length of the reed is smaller than that of the limiting hole, two ends of the reed are connected with the inner wall of the limiting hole, and the reed bulges towards the direction of the jacking block.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
1. the utility model provides a coal-winning machine pick prevents getting rid of and takes off device dashes out the briquetting and makes the briquetting fix between clamping ring and spacing hole through the kicking block on the fixed connection seat to realize being connected of fixed connection seat and pick body, the pick seat then adopts threaded connection with the fixed connection seat, avoids the pick body directly to pass through threaded connection fixed connection seat, and it is higher to connect the reliability, connects conveniently, reasonable in design, and simple structure is fit for extensive the popularization.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic structural view of a pick anti-throwing device of a coal mining machine provided by an embodiment;
FIG. 2 is a cross-sectional view of a portion of the pick body and the fixture connection block provided in accordance with an embodiment;
FIG. 3 is an isometric view of a portion of a pick body and a fixture connection mount provided by an embodiment;
in each of the above figures, 1, a cutting pick body; 11. a connecting ring; 11a, a connecting hole; 12. a limiting groove;
13. buffering the blind hole; 2. a pick seat; 21. mounting holes; 22. sinking a groove; 3. fixing the connecting seat;
31. fixing a nut; 32. connecting the bosses; 33. connecting grooves; 34. a top block; 341. a guide head;
35. a limiting hole; 4. briquetting; 41. an outer side surface; 42. an inner side surface; 43. a guide notch; 5. a screw; 6. a reed.
Detailed Description
In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be further described with reference to the accompanying drawings and examples. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" used herein refer to the same directions as the drawings, and do not limit the structure.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the present invention is not limited to the limitations of the specific embodiments of the present disclosure.
The embodiment, as shown in fig. 1, 2 and 3, the utility model provides a coal-winning machine pick prevents getting rid of and takes off device, including pick main part 1 and pick seat 2, be provided with mounting hole 21 on the pick seat 2, the bottom of mounting hole 21 is provided with the fixed connection seat 3 of being connected with pick main part 1, and the bottom of mounting hole 21 is provided with heavy groove 22. The pick holder 2, the mounting hole 21 and the sink 22 are conventional, and are not described herein again. The utility model discloses a key is to the bottom structure of fixed connection seat 3 and pick body 1 provides the improvement to improve pick body 1 and fixed connection seat 3's the reliability of being connected.
Specifically, the utility model provides an inner thread is provided on the inner wall of the sink groove 22, the outer wall of the fixed connection seat 3 is provided with an external thread matched with the internal thread, the bottom of the fixed connection seat 3 is provided with a fixing nut 31, the top of the fixed connection seat 31 is provided with a connection boss 32 extending towards the inside of the installation hole, the middle of the connection boss 32 is provided with a connection groove 33, the center of the connection groove 33 is provided with a top block 34, the bottom of the cutting pick body 1 is provided with a connection ring 11 matched with the connection groove, the side of the connection ring 11 is provided with three connection holes 11a distributed in a circular array, the connection holes 11a are in a partial ring shape, a press block 4 is movably arranged in the connection hole 11a, the outer side surface 41 and the inner side surface 42 of the press block 4 are both arc-shaped surfaces and the other surfaces are planes, the arc length of the outer side surface 41 of the press block 4 is greater than the arc length of the inner side surface 42, the inner side surface 42 of the press block is provided with a guide notch 43 facing the top block 34, the guide notch 43 is a conical curved surface, the top of the top block 34 is provided with a guide head 341, the guide head 341 is a circular truncated cone and is matched with the conical curved surface, the inner wall of the connecting groove 33 is provided with a limiting hole 35 corresponding to the connecting hole 11a, the side surface of the cutting pick body 1 is provided with a limiting groove 12, the side surface of the cutting pick seat 2 is provided with a screw rod 5 connected with the limiting groove, the screw rod 5 is in threaded connection with the cutting pick seat 2, and the end part of the screw rod 2 is movably connected with the cutting pick body 1. Wherein, pick holder 2 and fixed connection seat 3 adopt threaded connection's form, utilize pick holder 2 directly outwards to transmit impact pressure, get rid of the pick body and directly adopt the not hard up problem that screw and fixed connection seat connected the existence. The fixing nut 31 is a point of application of an external tool, which facilitates gradually tightening or loosening the fixed connection seat by clamping the fixing nut 31. The two arc-shaped surfaces of the pressure piece 4 are designed to provide a rigid condition for the rotation thereof, so that the locking in the rotation process or the locking after the connection is prevented.
Further, in the process that the fixed connecting seat 3 is screwed on the pick holder 2, the top block 34 gradually rises until the guide head 341 at the top of the top block rushes open the pressing block 4 along the guide notch 43, a part of the pressing block 4 enters the limiting hole 35 of the fixed connecting seat 3, the pressing block 4 plays a role in connecting between the connecting ring 11 and the fixed connecting seat 3, and the end plane of the pressing block 4 can be in contact fit with the end surface of the limiting hole 35 to achieve the purpose of preventing rotation; meanwhile, the end part of the screw rod on the side surface of the pick holder 2 is inserted into the limiting groove 12 of the pick body 1 to serve as a safety mechanism to further prevent pick deviation, so that the anti-loosening effect is high, and the connection reliability is high.
In order to improve the matching performance of the top block and the pressing block, the bottom of the cutting pick body 1 is provided with the buffer blind hole 13 corresponding to the connecting ring 11, and the buffer blind hole 13 is matched with the top block 34, so that the phenomenon that the top block and the pressing block are completely pressed due to the influence of the processing precision problem on part of the cutting pick body 1 is avoided; meanwhile, the buffer blind hole 13 can also play a role in shock resistance, and the guide head 341 is prevented from generating hard impact on the fixed connection seat due to the fact that the guide head directly bears pressure from the cutting pick body.
Consider briquetting 4 can not with spacing seamless press fit after being impressed the fixed connection seat, in order to improve the stability of briquetting 4 between clamping ring 11 and fixed connection seat 3, the utility model discloses there is reed 6 on the inclined to one side at the inner wall of spacing hole 35, the length of reed 6 is less than the length of spacing hole 35, the both ends of reed 6 and the interior wall connection of spacing hole 35, and reed 6 is bloated towards 34 directions of kicking block, utilizes reed 6 to come to provide bearing pressure for the arc lateral surface of briquetting, increases briquetting 4's lifting surface to obtain higher connection stability.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art may use the above-mentioned technical contents to change or modify the equivalent embodiment into equivalent changes and apply to other fields, but any simple modification, equivalent change and modification made to the above embodiments according to the technical matters of the present invention will still fall within the protection scope of the technical solution of the present invention.
Claims (3)
1. A coal cutter cutting pick anti-throwing device comprises a cutting pick body and a cutting pick seat, wherein a mounting hole is formed in the cutting pick seat, a fixed connecting seat connected with the cutting pick body is arranged at the bottom of the mounting hole, and a sinking groove is formed in the bottom end of the mounting hole, and the coal cutter cutting pick anti-throwing device is characterized in that an internal thread is arranged on the inner wall of the sinking groove, an external thread matched with the internal thread is arranged on the outer wall of the fixed connecting seat, a fixing nut is arranged at the bottom of the fixed connecting seat, a connecting boss extending towards the inside of the mounting hole is arranged at the top of the fixed connecting seat, a connecting groove is formed in the middle of the connecting boss, a top block is arranged at the center of the connecting groove, a connecting ring matched with the connecting groove is arranged at the bottom of the cutting pick body, three connecting holes distributed in a circular array are arranged on the side face of the connecting ring, and are in a partial ring shape, the movable briquetting that is provided with in the connecting hole, the lateral surface and the medial surface of briquetting are arcwall face and other faces are the plane, the arc length of the lateral surface of briquetting is greater than the arc length of medial surface, be provided with the direction breach towards the kicking block on the medial surface of briquetting, the direction breach is the toper curved surface, the top of kicking block is provided with the direction head, the direction head is the round platform body and cooperates with the toper curved surface, be provided with the spacing hole that corresponds with the connecting hole on the inner wall of spread groove, the side of pick main part is provided with the spacing groove, the side of pick seat is provided with the screw rod of being connected with the spacing groove, screw rod and pick seat threaded connection, the tip and the pick main part swing joint of screw rod.
2. The coal cutter pick anti-throwing device according to claim 1, wherein the bottom of the pick body is provided with a blind buffer hole corresponding to the connecting ring, the blind buffer hole being engaged with the top block.
3. The coal cutter pick anti-throwing device according to claim 2, wherein a reed is biased on the inner wall of the limiting hole, the length of the reed is smaller than that of the limiting hole, two ends of the reed are connected with the inner wall of the limiting hole, and the reed bulges towards the direction of the jacking block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631781.XU CN214576999U (en) | 2021-03-29 | 2021-03-29 | Coal cutter pick anti-throwing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120631781.XU CN214576999U (en) | 2021-03-29 | 2021-03-29 | Coal cutter pick anti-throwing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214576999U true CN214576999U (en) | 2021-11-02 |
Family
ID=78321371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120631781.XU Expired - Fee Related CN214576999U (en) | 2021-03-29 | 2021-03-29 | Coal cutter pick anti-throwing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214576999U (en) |
-
2021
- 2021-03-29 CN CN202120631781.XU patent/CN214576999U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211102 |