CN117570125B - Clutch, coal mining machine rocker arm and coal mining machine - Google Patents
Clutch, coal mining machine rocker arm and coal mining machine Download PDFInfo
- Publication number
- CN117570125B CN117570125B CN202410054359.0A CN202410054359A CN117570125B CN 117570125 B CN117570125 B CN 117570125B CN 202410054359 A CN202410054359 A CN 202410054359A CN 117570125 B CN117570125 B CN 117570125B
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- torque shaft
- shaft
- pull rod
- end cover
- clutch
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- 239000003245 coal Substances 0.000 title abstract description 21
- 238000005065 mining Methods 0.000 title abstract description 13
- 230000000903 blocking effect Effects 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 230000009467 reduction Effects 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- -1 polytetrafluoroethylene Polymers 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D23/00—Details of mechanically-actuated clutches not specific for one distinct type
- F16D23/02—Arrangements for synchronisation, also for power-operated clutches
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H2057/02039—Gearboxes for particular applications
- F16H2057/02069—Gearboxes for particular applications for industrial applications
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Operated Clutches (AREA)
Abstract
The invention relates to the field of transmission equipment, and provides a clutch, a coal mining machine rocker arm and a coal mining machine. The clutch comprises a shell, a torque shaft, a pull rod, a gear shaft, a second limiting structure and a wear-resistant stop block. When the torque shaft is located at the first position, the clutch is in a combined state, and the torque shaft is in transmission connection with the gear shaft. One end of the pull rod, which is close to the end cover, is abutted against the wear-resistant plate, and the pull rod and the wear-resistant plate rotate relatively. The wear plate may limit movement of the tie rod in an axial direction toward the end cap. The second limiting structure is arranged between the torque shaft and the gear shaft, can limit the torque shaft to move along the axial direction far away from the end cover, and can limit the torque shaft to move along the radial direction. The clutch is in a disengaged state when the torque shaft moves to the second position. The clutch provided by the invention can limit the axial and radial movement of the torque shaft, and the pull rod and the wear-resistant stop block can rotate relatively.
Description
Technical Field
The invention relates to the technical field of transmission equipment, in particular to a clutch, a coal mining machine rocker arm and a coal mining machine.
Background
In normal production of mines, the coal cutter plays a vital role, and the clutch mechanism of the rocker arm cutting motor of the coal cutter mainly comprises the step of adjusting the relative positions of a torque shaft and a gear shaft through a pull rod to separate and combine the power transmission of the cutting motor and a rocker arm reduction gearbox. The clutch mechanism of the cutting motor of the rocker arm of the coal mining machine is connected with the torque shaft through a bearing arranged at the shaft end of the pull rod for operation, and the bearing is mainly used for limiting the position change of the torque shaft along the axial direction and the radial direction in the operation process, so that the cutting motor is ensured to stably transmit power to the rocker arm reduction gearbox through the torque shaft.
In the actual operation process, as axial and radial movement of the torque shaft occurs, the radial and axial forces borne by the bearing on the pull rod are larger, so that the bearing is frequently damaged, a disc bearing is replaced every five days on average, at least forty minutes are required for replacing the bearing every time, the coal mine material consumption is improved, and great loss is caused to coal mine production.
In the related art, a multi-bearing pull rod for a clutch is provided, and a plurality of bearings are sleeved between the pull rod and a torque shaft, so that the load born by a single bearing can be relieved to a certain extent, but the problem that the bearing is frequently damaged due to overlarge load cannot be fundamentally solved.
Disclosure of Invention
The technical scheme of the invention aims at solving at least one of the technical problems in the prior art or related technologies.
The present invention provides a clutch comprising:
the shell is provided with an end cover at one end, and the end cover is detachably connected with the shell;
a torque shaft rotatably disposed within the housing and configured to move along an axis of the housing to a first position or a second position;
the pull rod is arranged at one end, close to the end cover, of the torque shaft;
the gear shaft is rotatably arranged in the shell, and the gear shaft is sleeved on the outer side of the torque shaft;
the second limiting structure is arranged between the torque shaft and the gear shaft;
the wear-resistant stop block is arranged on one side of the end cover, which is close to the pull rod;
when the torque shaft is located at the first position, one end, close to the end cover, of the pull rod is abutted to the wear-resistant stop block, the second limiting structure limits movement of the torque shaft in the direction away from the end cover in the axial direction, and limits movement of the torque shaft in the radial direction, and when the torque shaft is located at the second position, the torque shaft is out of contact with the gear shaft.
According to the clutch provided by the invention, the second limiting structure comprises:
the first shaft shoulder is arranged on the inner side of the gear shaft, and a first blocking surface of the first shaft shoulder faces the end cover;
the limiting component is arranged on the outer side of one end, close to the end cover, of the torque shaft;
when the torque shaft is located at the first position, one side, away from the end cover, of the limiting component is contacted with the first blocking surface of the first shaft shoulder, and the outer circumferential surface, away from the torque shaft, of the limiting component is contacted with the inner side surface of the gear shaft.
According to the clutch provided by the invention, the limiting assembly comprises:
the torque shaft is provided with a first clamping groove at the outer side close to one end of the end cover, and the first clamping groove is detachably arranged in the first clamping groove;
the second retaining ring is sleeved on the outer side of the torque shaft, and one side, close to the end cover, of the second retaining ring is abutted with one side, far away from the end cover, of the first retaining ring;
when the torque shaft is located at the first position, one side, away from the end cover, of the second check ring is abutted against the first blocking surface of the first shaft shoulder, and the outer circumferential surface of the second check ring is in contact with the inner side surface of the gear shaft.
According to the clutch provided by the invention, the end, close to the end cover, of the torque shaft is provided with the mounting hole, the pull rod is arranged in the mounting hole, and the pull rod is in anti-rotation connection with the mounting hole.
According to the clutch provided by the invention, the first limiting structure is arranged in the mounting hole and is used for limiting the axial movement of the pull rod along the torque shaft.
According to the clutch provided by the invention, the first limiting structure comprises:
the second shoulder is arranged in the mounting hole, a second blocking surface of the second shoulder faces the end cover, and one end, far away from the end cover, of the pull rod is abutted with the second blocking surface of the second shoulder;
the inner side of the mounting hole, which is close to one end of the end cover, is provided with a second clamping groove, the third clamping ring is detachably arranged in the second clamping groove, and the pull rod is inserted into the mounting hole and is close to one side of the end cover, which is used for being abutted with one side, away from the end cover, of the third clamping ring.
According to the clutch provided by the invention, one end of the pull rod, which is contacted with the wear-resistant stop block, is a spherical surface.
According to the clutch provided by the invention, when the torque shaft is positioned at the first position, the torque shaft is connected with the gear shaft in a key way.
The invention also provides a rocker arm of the coal mining machine, which comprises the clutch.
The invention also provides a coal cutter comprising the clutch or the coal cutter rocker arm.
The clutch provided by the invention comprises a shell, a torque shaft, a pull rod, a gear shaft, a second limiting structure and a wear-resistant stop block. One end of the shell is provided with an end cover which is detachably connected with the shell. The torque shaft is arranged in the shell, is rotationally connected with the shell, and can move to a first position or a second position along the axis of the shell. The pull rod is arranged at one end of the torque shaft, which is close to the end cover, and the pull rod and the torque shaft synchronously move. The gear shaft is rotatably arranged in the shell, and the gear shaft is sleeved on the outer side of the torque shaft. The second limit structure is arranged between the torque shaft and the gear shaft. The wear-resisting dog sets up in the end cover one side that is close to the pull rod. When the torque shaft is positioned at the first position, the clutch is in a combined state, at the moment, the outer side of the torque shaft is in transmission connection with the inner side of the gear shaft, and the torque shaft can drive the gear shaft to synchronously rotate. At this time, one end of the pull rod, which is close to the end cover, is abutted against the wear-resistant plate, and the pull rod and the torque shaft synchronously rotate, so that the pull rod and the wear-resistant plate relatively rotate. The wear plate may limit movement of the tie rod in an axial direction toward the end cap. The second limiting structure is used for limiting the movement of the torque shaft in a direction away from the end cover and limiting the movement of the torque shaft in the radial direction. When the torque shaft needs to move to the second position, the end cover is detached, the wear-resistant stop block and the end cover are detached together, at the moment, the pull rod is pulled towards the direction of the end cover arranged on the shell, and the pull rod drives the torque shaft to move together, so that the torque shaft is separated from the gear shaft, and the clutch is in a separation state. According to the clutch, the wear-resistant stop block and the second limiting structure can limit the movement of the torque shaft in the axial direction and the radial direction, meanwhile, the pull rod and the wear-resistant stop block can rotate relatively, the wear-resistant stop block can replace a bearing to work, and the problem that the bearing is easy to damage is fundamentally solved.
Further, in the shearer ranging arm and the shearer provided by the invention, the clutch is arranged, so that the advantages are the same as those described above.
Drawings
In order to more clearly illustrate the invention or the technical solutions of the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic illustration of a clutch provided in accordance with one embodiment of the present invention;
reference numerals:
100. a housing; 110. an end cap; 200. a torque shaft; 300. a pull rod; 400. a gear shaft; 500. wear-resistant stop blocks; 610. a first retainer ring; 620. the second check ring; 630. and a third check ring.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In normal production of mines, the coal mining machine plays a vital role, and a rocker arm cutting motor of the coal mining machine is in power connection with a rocker arm speed reducer through a clutch mechanism. The clutch mechanism mainly uses a pull rod to adjust the relative position of the torque shaft and the gear shaft to separate and combine the power transmission of the cutting motor and the rocker arm reduction gearbox.
The clutch mechanism is connected with the torque shaft through a bearing arranged at the shaft end of the pull rod, and the bearing is mainly used for limiting the position change of the torque shaft along the axial direction and the radial direction in the operation process, so that the cutting motor is ensured to stably transmit power to the rocker arm reduction gearbox through the torque shaft.
In the actual operation process, as axial and radial movement of the torque shaft occurs, the radial and axial forces borne by the bearing on the pull rod are larger, so that the bearing is frequently damaged, a disc bearing is replaced every five days on average, at least forty minutes are required for replacing the bearing every time, the coal mine material consumption is improved, and great loss is caused to coal mine production.
In the related art, a multi-bearing pull rod for a clutch is provided, and a plurality of bearings are sleeved between the pull rod and a torque shaft, so that the load born by a single bearing can be relieved to a certain extent, but the problem that the bearing is frequently damaged due to overlarge load cannot be fundamentally solved.
To this end, embodiments of the present invention provide a clutch to solve the above-described technical problems.
The clutch provided by the embodiment of the present invention is described below with reference to fig. 1.
Embodiments of the present invention provide a clutch including a housing 100, a torque shaft 200, a tie rod 300, a gear shaft 400, a second limiting structure, and a wear-resistant stopper 500.
The housing 100 is hollow in the interior and is open at least one end thereof, and an end cap 110 is detachably provided at the open end for closing the housing 100.
Referring to fig. 1, a hollow portion of the case 100 may extend in a left-right direction, and an end cap 110 may be provided at a left end of the case 100, and the end cap 110 may be detachably coupled with the case 100 by bolts.
The torque shaft 200 is disposed within the housing 100, and the torque shaft 200 is disposed coaxially with the housing 100. The torque shaft 200 may rotate about its own axis within the housing 100, or may translate in the axial direction of the housing 100. The torque shaft 200 is movable along the axis of the housing 100 to a first position or a second position. Wherein the clutch is in an engaged state when the torque shaft 200 is in the first position and in a disengaged state when the torque shaft 200 is in the second position.
Referring to fig. 1, a torque shaft 200 is provided within a housing 100, and an axis of the torque shaft 200 extends in a left-right direction. The illustrated position is a state when the torque shaft 200 is in the first position, and when the torque shaft 200 is in the second position where movement is required, the end cap 110 needs to be first disassembled and then moved to the left to the second position, and the state when the torque shaft 200 is in the second position is not shown in the drawing.
The pull rod 300 is arranged at one end of the torque shaft 200, which is close to the end cover 110, the pull rod 300 is in transmission connection with the torque shaft 200, a first limiting structure is arranged in the torque shaft 200, and the first limiting structure is used for limiting the axial movement of the pull rod 300 along the torque shaft 200.
Referring to fig. 1, a pull rod 300 is disposed at the left end of the torque shaft 200, and the pull rod 300 is disposed coaxially with the torque shaft 200. The pull rod 300 is in transmission connection with the torque shaft 200, so that the pull rod 300 and the torque shaft 200 can synchronously rotate. Since the first limiting structure can limit the pull rod 300 to move along the axial direction of the torque shaft 200, the pull rod 300 can be pulled along the axial direction of the torque shaft 200, and the torque shaft 200 can be driven to move between the first position and the second position.
The gear shaft 400 is rotatably disposed in the housing 100, and the gear shaft 400 is sleeved outside the torque shaft 200.
Referring to fig. 1, both end portions of the gear shaft 400 may be rotatably coupled with the housing 100 through bearings. The outside of the gear shaft 400 is provided with gear teeth, the inside of the gear shaft 400 is provided with a shaft hole, and the gear shaft 400 is sleeved outside the torque shaft 200 through the shaft hole.
A second limiting structure is disposed between the torque shaft 200 and the gear shaft 400, the second limiting structure including a first shoulder and a limiting assembly. The first blocking surface of the first shaft shoulder faces the direction of the end cover 110, one side, away from the end cover 110, of the limiting component is used for being in contact with the first blocking surface of the first shaft shoulder, and the outer circumferential surface, away from the torque shaft 200, of the limiting component is in abutting contact with the inner side surface of the gear shaft 400.
The wear block 500 is disposed on a side of the end cap 110 adjacent to the tie rod 300.
The clutch provided by the invention can transmit or cut off the power between the cutting motor and the rocker arm reduction gearbox.
When the cutting motor is required to transmit power to the rocker arm gearbox, the clutch needs to be in an engaged state, and the torque shaft 200 is in the first position, i.e. the state shown in fig. 1.
In this state, the cutting motor (not shown in the drawing, the cutting motor is at a position omitted from the right side of fig. 1) is in transmission connection with the torque shaft 200, the cutting motor drives the torque shaft 200 to rotate, and when the torque shaft 200 is at the first position, the torque shaft 200 is in transmission connection with the gear shaft 400, so that the torque shaft 200 drives the gear shaft 400 to synchronously rotate, and gear teeth outside the gear shaft 400 are in meshed transmission with a gear of the rocker arm reduction gearbox, so that transmission of the cutting motor to the rocker arm reduction motor power is realized.
During operation, the torque shaft 200 may play in either the radial or axial direction, or both the axial and radial directions.
In the clutch provided by the present invention, when the clutch is in the engaged state, the torque shaft 200 is in the first position, i.e., the position shown in fig. 1. At this time, the left end of the pull rod 300 abuts against the wear-resistant stopper 500, and the wear-resistant stopper 500 may restrict the movement of the pull rod 300 to the left, but the pull rod 300 may rotate relative to the wear-resistant stopper 500. A first limiting structure within the torque shaft 200 may limit axial movement of the torque shaft 200 relative to the tie rod 300. In this way, play of the torque shaft 200 in the direction axially approaching the end cap 110 can be restricted.
The second limit structure is arranged between the torque shaft 200 and the gear shaft 400, the second limit structure comprises a first shaft shoulder and a limit component, the limit component is arranged on the outer side of one end, close to the end cover 110, of the torque shaft 200, namely, on the outer side of the left end of the torque shaft 200, the first shaft shoulder of the gear shaft 400 is abutted against the right side surface of the limit component on the right side of the limit component, and therefore, the first shaft shoulders of the limit component and the gear shaft 400 can limit the torque shaft 200 from moving along the direction of axially far away from the end cover 110.
The outer circumferential surface of the limiting assembly, which is far away from the torque shaft 200, is abutted against the inner side surface of the gear shaft 400, so that the radial play of the torque shaft 200 can be limited.
In this way, the axial and radial play of the torque shaft 200 is limited, and the rotation of the torque shaft 200 is not affected, so that the torque shaft can completely replace a bearing to work.
The clutch provided by the embodiment of the invention uses the structure to change the stress form so as to replace a bearing to work, thereby fundamentally solving the problem of bearing damage, saving the cost, greatly reducing the maintenance time and further improving the productivity.
In some embodiments of the present invention, the stop assembly includes a first stop ring 610 and a second stop ring 620.
A first clamping groove is formed in the outer side of one end, close to the end cover 110, of the torque shaft 200, and the first check ring 610 is detachably arranged in the first clamping groove.
Referring to fig. 1, a first clamping groove is formed on the left outer side of the torque shaft 200, and the first retainer ring 610 may be a clamping spring, where the width of the first clamping groove is equal to the thickness of the clamping spring, so that the clamping spring may be installed in the first clamping groove, and may limit the axial movement of the clamping spring along the torque shaft 200.
The inner diameter of the clamp spring can be equal to the diameter of the inner peripheral surface of the first clamping groove, so that the inner side surface of the clamp spring can be in contact with the inner peripheral surface of the first clamping groove.
The outer diameter of the clamp spring needs to be larger than the outer diameter of the torque shaft 200, so that after the clamp spring is installed in the first clamping groove, the clamp spring can protrude out of the first clamping groove, and the effect of blocking the clamp spring is achieved.
The second retainer ring 620 is sleeved on the outer side of the torque shaft 200, and one side of the second retainer ring 620 close to the end cover 110 abuts against one side of the first retainer ring 610 far away from the end cover 110, so that the second retainer ring 620 can limit the first retainer ring 610 to move in a direction far away from the end cover 110.
Referring to fig. 1, the second check ring 620 has an annular structure, an inner diameter of the second check ring 620 may be equal to an outer diameter of the torque shaft 200, and an outer diameter of the second check ring 620 may be equal to an inner diameter of the gear shaft 400. Thus, after the second retainer ring 620 is sleeved on the outer side of the torque shaft 200, the outer circumferential surface of the second retainer ring 620 away from the torque shaft 200 may contact the inner side of the gear shaft 400, and the inner side of the second retainer ring 620 contacts the outer side of the torque shaft 200, so that the second retainer ring 620 may limit the movement of the torque shaft 200 in the radial direction.
When the torque shaft 200 is located at the first position, and the first retaining ring 610 is sleeved in the first clamping groove, and the second retaining ring 620 is sleeved outside the torque shaft 200, the left side surface of the second retaining ring 620 contacts with the right side surface of the first retaining ring 610, and the right side surface of the second retaining ring 620 is used for contacting with the first blocking surface of the first shaft shoulder of the gear shaft 400. Thus, the first blocking surface of the first shaft shoulder can limit the movement of the second retainer ring 620 to the right, the second retainer ring 620 can limit the movement of the first retainer ring 610 to the right, and the first retainer ring 610 can limit the movement of the torque shaft 200 to the right through the first clamping groove, so as to limit the movement of the torque shaft 200 to the right along the axial direction.
In some embodiments of the present invention, a mounting hole is provided at an end of the torque shaft 200 near the end cap 110, a pull rod 300 is provided in the mounting hole, and the pull rod 300 is in a rotation-stopping connection with the mounting hole, for example, the pull rod 300 is in an interference fit with the mounting hole.
Referring to fig. 1, a mounting hole extending rightward is provided at the left end of the torque shaft 200, and an inner diameter of the mounting hole may be slightly smaller than an outer diameter of the pull rod 300, so that interference fit between the right end of the pull rod 300 and the mounting hole is achieved, and synchronous rotation of the pull rod 300 may be achieved when the torque shaft 200 rotates.
In addition, in another embodiment, the pull rod 300 and the mounting hole may be connected by a key, so long as a connection structure for synchronously rotating the pull rod 300 and the torque shaft 200 is achieved.
Further, in some embodiments of the present invention, the first stop structure may include a second shoulder and a third stop ring 630.
The second shoulder is disposed in the mounting hole, and the second blocking surface of the second shoulder faces the direction of the end cover 110, and an end of the pull rod 300 away from the end cover 110 abuts against the second blocking surface of the second shoulder.
Referring to fig. 1, a second shoulder extending inward in the radial direction of the mounting hole is disposed in the mounting hole, and the left end face of the second shoulder is the second blocking surface. When the pull rod 300 is mounted, the pull rod 300 is inserted rightward in the axial direction of the torque shaft 200 until the right end surface of the pull rod 300 contacts the second blocking surface of the second shoulder. The second stop surface may limit rightward movement of the drawbar 300 relative to the torque shaft 200.
When the torque shaft 200 is located at the first position, that is, the clutch is in the engaged state, the left end of the pull rod 300 abuts against the right side surface of the wear-resistant stop block 500, after the torque shaft 200 has a tendency to move leftwards, due to the fact that the second shoulder is arranged in the mounting hole of the torque shaft 200, the second stop surface of the second shoulder interacts with the right end surface of the pull rod 300, the pull rod 300 also has a tendency to move leftwards, and due to the fact that the left end of the pull rod 300 abuts against the wear-resistant stop block 500, the wear-resistant stop block 500 can limit the movement of the pull rod 300 leftwards, and therefore the pull rod 300 limits the movement of the torque shaft 200 leftwards through the second shoulder.
A second clamping groove is provided at the inner side of the mounting hole near one end of the end cap 110, and a third check ring 630 is detachably provided in the second clamping groove, and the left side of the portion of the tie rod 300 inserted into the mounting hole is in contact with the right side of the third check ring 630. Thus, when the pull rod 300 is pulled leftwards, the torque shaft 200 can be driven to move synchronously.
In some embodiments of the present invention, the wear block 500 may also withstand the frictional forces of relative rotation of the pull rod 300 and the wear block 500, in addition to the need to limit the movement of the pull rod 300 to the left. In order to reduce the wear of the wear-resistant stopper 500, the left end of the pull rod 300 may be provided as a spherical surface, so that the contact area between the pull rod 300 and the wear-resistant stopper 500 may be reduced, and the friction force may be reduced while the wear area is reduced, so that the resistance to rotation is reduced.
In some embodiments of the present invention, since the pull rod 300 and the wear-resistant block 500 rotate relatively, the friction between the pull rod 300 and the wear-resistant block 500 needs to be reduced, and therefore, the wear-resistant block 500 may be made of polytetrafluoroethylene, so that the friction between the wear-resistant block 500 and the pull rod 300 can be reduced while the wear resistance is improved.
In some embodiments of the invention, the torque shaft 200 may be keyed, such as splined, between the outer side of the torque shaft 200 and the inner side of the gear shaft 400 when the torque shaft 200 is in the first position.
Further, the embodiment of the invention also provides a rocker arm of a coal mining machine, which has the same advantages as the clutch.
Further, the embodiment of the present invention also provides a shearer having the same advantages as described above due to the provision of the shearer clutch as described above or the shearer rocker arm as described above.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. A clutch, comprising:
the shell (100), one end of the shell (100) is provided with an end cover (110), and the end cover (110) is detachably connected with the shell (100);
-a torque shaft (200), the torque shaft (200) being rotatably arranged within the housing (100), and the torque shaft (200) being adapted to move along an axis of the housing (100) to a first position or a second position;
a pull rod (300), wherein the pull rod (300) is arranged at one end of the torque shaft (200) close to the end cover (110);
the gear shaft (400) is rotatably arranged in the shell (100), and the gear shaft (400) is sleeved on the outer side of the torque shaft (200);
a second limit structure disposed between the torque shaft (200) and the gear shaft (400);
a wear-resistant stop (500), the wear-resistant stop (500) being arranged on one side of the end cap (110) close to the pull rod (300);
when the torque shaft (200) is located at the first position, one end, close to the end cover (110), of the pull rod (300) is abutted against the wear-resistant stop block (500), the second limiting structure limits the movement of the torque shaft (200) in a direction away from the end cover (110) and limits the movement of the torque shaft (200) in the radial direction, and when the torque shaft (200) is located at the second position, the torque shaft (200) is out of contact with the gear shaft (400);
the second limit structure includes:
a first shoulder disposed inside the gear shaft (400), with a first blocking surface of the first shoulder facing the end cap (110);
the limiting component is arranged on the outer side of one end, close to the end cover (110), of the torque shaft (200);
when the torque shaft (200) is positioned at a first position, one side, far away from the end cover (110), of the limiting component is contacted with the first blocking surface of the first shaft shoulder, and the outer circumferential surface, far away from the torque shaft (200), of the limiting component is contacted with the inner side surface of the gear shaft (400);
the spacing subassembly includes:
the torque shaft (200) is provided with a first clamping groove at the outer side close to one end of the end cover (110), and the first check ring (610) is detachably arranged in the first clamping groove;
the second check ring (620), the said second check ring (620) is set up in the outside of the said torque shaft (200), and the said second check ring (620) is close to one side of the said end cap (110) and said first check ring (610) is far away from one side of the said end cap (110) and is abutted;
when the torque shaft (200) is located at the first position, one side of the second check ring (620) away from the end cover (110) is abutted with the first blocking surface of the first shaft shoulder, and the outer peripheral surface of the second check ring (620) is contacted with the inner side surface of the gear shaft (400);
one end, close to the end cover (110), of the torque shaft (200) is provided with a mounting hole, the pull rod (300) is arranged in the mounting hole, and the pull rod (300) is in rotation-stopping connection with the mounting hole;
a first limiting structure is arranged in the mounting hole and used for limiting the axial movement of the pull rod (300) along the torque shaft (200);
the first limit structure includes:
a second shoulder disposed within the mounting hole, a second blocking surface of the second shoulder facing the end cap (110), an end of the tie rod (300) remote from the end cap (110) abutting the second blocking surface of the second shoulder;
the third retaining ring (630), the mounting hole is close to the inboard of the one end of end cover (110) is provided with the second draw-in groove, third retaining ring (630) detachable sets up in the second draw-in groove, pull rod (300) inserts the part of mounting hole and be close to one side of end cover (110) be used for with one side butt of end cover (110) is kept away from to third retaining ring (630).
2. The clutch according to claim 1, characterized in that the end of the tie rod (300) in contact with the wear stop (500) is spherical.
3. The clutch according to claim 1, wherein the torque shaft (200) is keyed to the gear shaft (400) when the torque shaft (200) is in the first position.
4. A shearer loader rocker arm comprising a clutch as claimed in any one of claims 1 to 3.
5. A shearer loader comprising a clutch as claimed in any one of claims 1 to 3 or a shearer loader swing arm as claimed in claim 4.
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| CN202410054359.0A CN117570125B (en) | 2024-01-15 | 2024-01-15 | Clutch, coal mining machine rocker arm and coal mining machine |
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| CN202410054359.0A CN117570125B (en) | 2024-01-15 | 2024-01-15 | Clutch, coal mining machine rocker arm and coal mining machine |
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| CN214837973U (en) * | 2021-04-07 | 2021-11-23 | 三一重型装备有限公司 | Coal mining machine torque shaft and coal mining machine |
| WO2022006130A1 (en) * | 2020-07-02 | 2022-01-06 | Agilent Technologies, Inc. | Filter assemblies, depth indicators, torque-limiting fittings, torque-indicating fittings, and systems incorporating the same |
| CN217873738U (en) * | 2022-05-23 | 2022-11-22 | 人本股份有限公司 | Special torque shaft for coal mining machine |
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2024
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| CN1900500A (en) * | 2005-06-30 | 2007-01-24 | 微型涡轮股份有限公司 | Decoupling sleeve |
| CN201972704U (en) * | 2011-03-25 | 2011-09-14 | 西安煤矿机械有限公司 | Gear clutch for rocker of thin seam coal mining machine |
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| CN214837973U (en) * | 2021-04-07 | 2021-11-23 | 三一重型装备有限公司 | Coal mining machine torque shaft and coal mining machine |
| CN217873738U (en) * | 2022-05-23 | 2022-11-22 | 人本股份有限公司 | Special torque shaft for coal mining machine |
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| Publication number | Publication date |
|---|---|
| CN117570125A (en) | 2024-02-20 |
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