CN210906406U - Torque-limiting type crushing roller - Google Patents
Torque-limiting type crushing roller Download PDFInfo
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- CN210906406U CN210906406U CN201921120134.1U CN201921120134U CN210906406U CN 210906406 U CN210906406 U CN 210906406U CN 201921120134 U CN201921120134 U CN 201921120134U CN 210906406 U CN210906406 U CN 210906406U
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Abstract
The utility model discloses a limit square crushing drum, include: the device comprises a cantilever crane, a driving part, a transmission component, a planet carrier, a crushing part and a friction torque limiting mechanism; the driving part is connected to the end part of the arm support and is perpendicular to the arm support, and the driving part drives the planet carrier to rotate through the transmission assembly. One end of the crushing part is rotatably sleeved on the driving part, the inner wall of the other end of the crushing part is provided with a connecting piece, the inner wall of the connecting piece is opposite to the outer wall of the planet carrier at intervals, the friction torque-limiting mechanism is positioned between the planet carrier and the connecting piece, and two sides of the friction torque-limiting mechanism respectively abut against the outer wall of the planet carrier and the inner wall of the connecting piece; the friction force between the friction torque limiting mechanism and the planet carrier and between the friction torque limiting mechanism and the connecting piece is adjustable. The utility model discloses a limit square crushing roller can realize skidding limit square function when taking place trouble such as the card is stifled, plays the guard action. The friction pair of the friction torque limiting mechanism is automatically combined after the crushing part works stably, the operation can be rapidly carried out without manual recovery, and the economic benefit is improved.
Description
Technical Field
The utility model relates to a technical field is carried in the colliery, especially relates to a limit square crushing roller.
Background
In some working surfaces with high coal seam pressure, a large amount of oversized blocks or rib caving are often generated in the cutting process of the coal mining machine, so that the scraper conveyor is blocked. Therefore, a crushing device is needed for crushing the oversized coal briquettes. A common solution is to install crushing drums on the shearer or auxiliary crushing drums at the nose of the scraper that is easily blocked.
The crushing roller provided by the prior art has the advantages that the gear with a large speed ratio is weak in strength, the safety factor is small, the phenomenon that the rotation is blocked frequently when large and hard materials are touched is caused, the torque shaft is overloaded and twisted off, even the speed reducer is toothed, the normal use of equipment is influenced, even serious accidents such as production halt are caused, and certain economic loss is caused for users.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the above-mentioned prior art, the utility model provides a limit rectangular crushing roller. The specific technical scheme is as follows:
a torque-limiting crushing drum comprising: the device comprises a cantilever crane, a driving part, a transmission component, a planet carrier, a crushing part and a friction torque limiting mechanism; the driving part is connected to the end part of the arm support and is perpendicular to the arm support, and the driving part drives the planet carrier to rotate through the transmission assembly; one end of the crushing part is rotatably sleeved on the driving part, a connecting piece is arranged on the inner wall of the other end of the crushing part, the inner wall of the connecting piece is opposite to the outer wall of the planet carrier at intervals, the friction torque-limiting mechanism is positioned between the planet carrier and the connecting piece, and two sides of the friction torque-limiting mechanism respectively abut against the outer wall of the planet carrier and the inner wall of the connecting piece and are used for providing friction force to transmit torque so that the crushing part rotates along with the planet carrier; and the friction force between the friction torque limiting mechanism and the planet carrier as well as between the friction torque limiting mechanism and the connecting piece is adjustable.
In one possible design, the friction torque limiting mechanism comprises a wear-resistant sleeve and an expansion piece, the wear-resistant sleeve is sleeved on the planet carrier, and the expansion piece is arranged outside the wear-resistant sleeve in a surrounding mode and used for providing radial force to generate friction force.
In one possible design, the expansion element is an expansion sleeve.
In one possible design, the expansion member is a high pressure oil bladder.
In one possible design, the drive unit drives the planetary carrier to rotate via a primary planet and a secondary planet, which form a secondary planetary gear train.
In one possible embodiment, a roller cover is connected to the end of the planet carrier, said roller cover being in contact with the end of the connecting piece.
In a possible design, a protective gland is connected to the side wall of the planet carrier, the connecting piece, the roller gland and the protective gland enclose a sealed accommodating cavity, and the friction torque limiting mechanism is located in the accommodating cavity.
In one possible design, the receiving chamber is filled with a predetermined amount of lubricating oil.
In one possible design, the inner wall of the wear sleeve is provided with a helical oil groove.
In one possible design, the middle part of the roller gland is provided with air holes along the axial direction.
The utility model discloses technical scheme's main advantage as follows:
the utility model discloses a limit square crushing drum makes connecting piece and planet carrier linkage through the frictional force of friction limit square mechanism, and then drives broken portion and rotate, can guarantee the moment of torsion transmission under the normal operating condition, can realize the limit square function of skidding again when taking place trouble such as card stifled, plays the guard action to motor, drive assembly or broken portion etc. improvement complete machine reliability. The friction force of the friction torque limiting mechanism is adjusted, so that the use requirements of different scenes can be met, and the application range is wide. Because the friction limit square mechanism is not fragile at the in-process that skids, the vice automatic combination of friction limit square mechanism after broken portion work is steady, need not artifical the resume and can put into production fast, improve economic benefits.
Drawings
The accompanying drawings, which are set forth herein, serve to provide a further understanding of the embodiments of the present invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are illustrative of the invention and do not constitute a limitation on the invention. In the drawings:
fig. 1 is a schematic view of an overall structure of a torque-limiting crushing drum according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a friction torque limiting mechanism in a torque-limiting type crushing roller according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a wear-resistant sleeve in a torque-limiting crushing drum according to an embodiment of the present invention;
fig. 4 is a partial enlarged view of a wear sleeve in a torque-limiting crushing drum according to an embodiment of the present invention.
Description of reference numerals:
1-arm support, 11-connecting piece, 2-driving part, 3-transmission component, 31-primary planet, 32-secondary planet, 4-planet carrier, 5-crushing part, 6-friction torque limiting mechanism, 61-wear-resistant sleeve, 62-expansion part, 7-roller gland, 8-protective gland, 9-spiral oil groove and 10-air hole.
Detailed Description
To make the purpose, technical solution and advantages of the present invention clearer, the following will combine the embodiments of the present invention and the corresponding drawings to clearly and completely describe the technical solution of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The technical solution provided by the embodiments of the present invention is described in detail below with reference to the accompanying drawings.
An embodiment of the utility model provides a limit square crushing drum, as shown in figure 1, include: the device comprises an arm support 1, a driving part 2, a transmission component 3, a planet carrier 4, a crushing part 5 and a friction torque limiting mechanism 6. The driving part 2 is connected to the end part of the arm support 1 and is perpendicular to the arm support 1, and the driving part 2 drives the planet carrier 4 to rotate through the transmission component 3. One end of the crushing part 5 is rotatably sleeved on the driving part 2, the inner wall of the other end of the crushing part is provided with a connecting piece 11, the inner wall of the connecting piece 11 is opposite to the outer wall of the planet carrier 4 at intervals, the friction torque-limiting mechanism 6 is positioned between the planet carrier 4 and the connecting piece 11, and two sides of the friction torque-limiting mechanism 6 are respectively abutted against the outer wall of the planet carrier 4 and the inner wall of the connecting piece 11 and are used for providing friction force to transmit torque so that the crushing part 5 rotates along with the planet carrier 4; the friction force between the friction torque limiting mechanism 6 and the planet carrier 4 and the connecting piece 11 is adjustable.
The following explains the working principle of the torque-limiting type crushing roller provided by the embodiment of the invention:
when the coal crusher is used, the crushing part 5 is transferred to a working surface by moving the arm support 1, and large coal blocks are crushed by the rotation of the crushing part 5. The driving part 2 is used for providing output torque and driving the planet carrier 4 to rotate through the transmission component 3. The planet carrier 4 and the connecting piece 11 are linked by the friction force of the friction torque limiting mechanism 6, and the maximum torque which can be transmitted by the friction force is the slip torque. When the impact torque between the carrier 4 and the connecting member 11 is smaller than the slip torque, the connecting member 11 rotates with the carrier 4. When the blockage phenomenon occurs, the connecting piece 11 stops rotating along with the crushing part 5, the impact torque between the planet carrier 4 and the connecting piece 11 is increased, and when the impact torque is larger than or equal to the slip torque, the connecting piece 11 and the planet carrier 4 rotate relatively. The slip moment is set to be slightly larger than the torque in the normal working state (for example, the slip moment can be 3 times of the torque in the normal working state), so that the torque transmission in the normal working state can be ensured, the slip can be caused when the phenomena of blocking and the like occur, the damage of the motor and/or the crushing part 5 caused by the generation of the larger moment is avoided, and the production safety performance is improved. The friction torque limiting mechanism 6 cannot be damaged in the slipping process, and after the crushing part 5 works stably, the friction pair of the friction torque limiting mechanism 6 is automatically combined, and the friction torque limiting mechanism can be normally put into use without manual recovery. Furthermore, as the friction force between the friction torque limiting mechanism 6 and the connecting piece 11 and between the friction torque limiting mechanism and the planet carrier 4 is adjustable, different friction forces correspond to different slip torques, the torque limiting requirements of different scenes can be met, and the application range is wide.
It can be seen that, the embodiment of the utility model provides a limit square crushing roller makes connecting piece 11 and planet carrier 4 linkage through the frictional force of friction limit square mechanism 6, and then drives crushing portion 5 and rotate, can guarantee the moment of torsion transmission under the normal operating condition, can realize the limit square function of skidding again when taking place trouble such as card is dead, plays the guard action to motor, drive assembly 3 or crushing portion 5 etc. and improves the complete machine reliability. The friction force of the friction torque limiting mechanism 6 is adjusted, so that the use requirements of different scenes can be met, and the application range is wide. Because the friction limit square mechanism 6 is not fragile at the in-process that skids, the vice automatic combination of friction limit square mechanism 6 after crushing portion 5 works steadily need not artifical the recovery and can put into production fast, improves economic benefits.
Wherein, as shown in figure 1, the inner wall of crushing portion 5 contacts with the outer wall of drive division 2 movingly sealedly to make crushing cylinder's compact structure, avoid rocking of crushing portion 5, the upper portion inner wall of crushing portion 5 sets up connecting piece 11 to with planet carrier 4's external diameter looks adaptation, be convenient for planet carrier 4 drives connecting piece 11 through friction limit square mechanism 6 and rotates, and then drives crushing portion 5 and rotate. The connecting piece 11 is of an annular structure, the cross section of the connecting piece is T-shaped, and due to the arrangement, the used materials are less, so that the area of the connecting piece 11 opposite to the planet carrier 4 is larger, and the end part of the crushing roller can be blocked.
The outer wall of the crushing part 5 is provided with crushing teeth, so that the coal blocks can be crushed conveniently in the rotating process. The end part of the crushing tooth is of a conical structure so as to improve the crushing effect.
The driving part 2 is perpendicular to the arm support 1, so that the crushing part 5 sleeved outside the driving part 2 is perpendicular to the arm support 1, and the arm support 1 can move the crushing part 5 to a working surface conveniently.
Optionally, in the torque-limiting crushing roller provided by the embodiment of the present invention, as shown in fig. 2, the friction torque-limiting mechanism 6 includes a wear-resistant sleeve 61 and an expansion member 62, the wear-resistant sleeve 61 is sleeved on the planet carrier 4, and the expansion member 62 is enclosed outside the wear-resistant sleeve 61 for providing a radial force to generate a friction force. With this arrangement, the magnitude of the radial force is controlled by the expansion degree of the expansion member 62, so that the friction force of the friction torque limiting mechanism 6 is adjustable. Through setting up wear-resisting cover 61, avoid the wearing and tearing of inflation piece 62, increase of service life improves the reliability in utilization.
As for the structure of the expansion member 62, the following is exemplified:
as an example, the expansion member 62 may be an expansion sleeve, and the magnitude of the expansion force is adjusted to set the slip moment by using the expansion force of the expansion sleeve as the radial force.
When the expansion force is adjusted, the extrusion degree of the expansion sleeve can be controlled by filling the expansion sleeves with different volumes between the wear-resistant sleeve 61 and the connecting piece 11, so that the expansion force is adjusted; or the expansion sleeve can be fixed on the end face of the planet carrier 4 through a bolt arranged along the axial direction, and the expansion sleeve is compressed to different degrees through rotating the bolt to obtain different expansion forces.
Or the expansion sleeve can comprise two outer rings, an inner ring and a tension bolt. The two outer rings are arranged on two sides of the inner ring, the inner ring is in contact with the outer rings through tapered contact surfaces, and the two outer rings are connected through tensioning bolts. The distance between the two outer rings is shortened by screwing the bolt, so that the axial size of the expansion sleeve is reduced, the radial size is increased, and the purpose of tensioning is achieved.
As another example, the expansion member 62 may be a high pressure oil bladder that is filled with hydraulic oil to provide a radial force. The magnitude of the radial force can be controlled by controlling the amount of the hydraulic oil filled in the high-pressure oil bag, and then the slip moment is set.
In the embodiment of the utility model, the maximum friction pair specific pressure of the friction torque limiting mechanism 6 can reach 180 MPa.
Optionally, in the embodiment of the present invention, the driving portion 2 drives the planet carrier 4 to rotate through the first-stage planet 31 and the second-stage planet 32, and the first-stage planet 31 and the second-stage planet 32 constitute a second-stage planetary gear train. Through the arrangement of the two-stage planetary gear train, the output torque of the driving part 2 is subjected to secondary speed reduction, and a good speed reduction transmission effect is achieved.
Wherein, a motor can be arranged in the driving part 2 to provide output torque.
Optionally, the embodiment of the utility model provides an in the limit square crushing roller, the end connection of planet carrier 4 has roller gland 7, roller gland 7 and connecting piece 11's tip contact. Through setting up cylinder gland 7, cylinder gland 7 blocks up the tip of limit square type crushing roller with the cooperation of connecting piece 11, plays the guard action to planet carrier 4, transmission assembly 3, drive division 2 and friction limit square mechanism 6 in it.
The roller gland 7 and the planet carrier 4 can be connected through bolts, and the bolts pass through holes or screw holes in the planet carrier 4 and are inserted and fixed in the screw holes in the end face of the planet carrier 4 in a threaded connection mode, so that the roller gland 7 and the planet carrier 4 are connected together. The number of the bolts may be plural, and the plural bolts are uniformly distributed along the circumferential direction of the roller cover 7.
Furthermore, the middle part of the roller gland 7 is provided with air holes 10 along the axial direction, which is convenient for the exchange of the internal air and the external air and brings out the heat inside the crushing roller.
Optionally, a protective gland 8 is connected to the side wall of the planet carrier 4, the connecting member 11, the roller gland 7 and the protective gland 8 enclose a sealed accommodating cavity, and the friction torque limiting mechanism 6 is located in the accommodating cavity. The friction torque limiting mechanism 6 is protected by arranging the protective gland 8. And be convenient for hold the intracavity and fill lubricating oil, the heat that produces when guaranteeing to skid can in time be taken away by lubricating oil, plays lubricated and cooling action.
Wherein, protection gland 8 is the ring structure, and protection gland 8 passes through bolted connection with planet carrier 4, and the outer wall of planet carrier 4 can be provided with the step face, and the bolt passes through the through-hole or the screw of protection gland 8 inboard and inserts and fix in the screw hole on the step face with threaded connection, links together protection gland 8 and planet carrier 4. The outer side of the protective gland 8 is in dynamic sealing contact with the end face of the connecting piece 11, so that the sealing effect can be achieved, and the relative rotation of the planet carrier 4 and the connecting piece 11 is not influenced when slipping occurs.
Further, as shown in fig. 3 and fig. 4, the inner wall of the wear-resistant sleeve 61 is provided with the spiral oil groove 9, so that the lubricating oil can uniformly flow through each part of the wear-resistant sleeve 61 in the flowing process, the heat generated during slipping can be timely taken away by the lubricating oil, and the damage caused by the overhigh heat at the position of the wear-resistant sleeve 61 is avoided.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, "front", "rear", "left", "right", "upper" and "lower" in this document are referred to the placement states shown in the drawings.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A torque-limiting crushing drum comprising: the device comprises an arm support (1), a driving part (2), a transmission component (3), a planet carrier (4), a crushing part (5) and a friction torque limiting mechanism (6);
the driving part (2) is connected to the end part of the arm support (1) and is perpendicular to the arm support (1), and the driving part (2) drives the planet carrier (4) to rotate through the transmission assembly (3);
one end of the crushing part (5) is rotatably sleeved on the driving part (2), a connecting piece (11) is arranged on the inner wall of the other end of the crushing part, the inner wall of the connecting piece (11) is opposite to the outer wall of the planet carrier (4) at intervals, the friction moment limiting mechanism (6) is positioned between the planet carrier (4) and the connecting piece (11), two sides of the friction moment limiting mechanism (6) are respectively abutted against the outer wall of the planet carrier (4) and the inner wall of the connecting piece (11), and the friction moment limiting mechanism is used for providing friction force to transmit torque so that the crushing part (5) rotates along with the planet carrier (4);
the friction force between the friction torque limiting mechanism (6) and the planet carrier (4) and between the friction torque limiting mechanism and the connecting piece (11) is adjustable.
2. The torque-limiting crushing drum according to claim 1, characterized in that the friction torque-limiting mechanism (6) comprises a wear sleeve (61) and an expansion piece (62), the wear sleeve (61) being sleeved on the planet carrier (4), the expansion piece (62) being enclosed outside the wear sleeve (61) for providing radial force to generate friction force.
3. The torque-limiting crushing drum according to claim 2, characterized in that the expansion piece (62) is an expansion sleeve.
4. The torque-limiting crushing drum according to claim 2, characterized in that the expansion member (62) is a high pressure oil bladder.
5. The torque-limiting crushing drum according to claim 1, characterized in that the drive part (2) rotates the planet carrier (4) through primary planets (31) and secondary planets (32), the primary planets (31) and the secondary planets (32) constituting a secondary planetary gear train.
6. The torque-limiting crushing drum according to claim 1, characterized in that a drum gland (7) is connected to the end of the planet carrier (4), the drum gland (7) being in contact with the end of the connecting piece (11).
7. The torque-limiting crushing drum according to claim 6, wherein a protective gland (8) is connected to the side wall of the planet carrier (4), the connecting piece (11), the drum gland (7) and the protective gland (8) enclose a sealed containing cavity, and the friction torque-limiting mechanism (6) is located in the containing cavity.
8. The torque-limiting crushing drum of claim 7 wherein the containment chamber is filled with a predetermined amount of lubricating oil.
9. Moment-limiting crushing drum according to claim 2, characterized in that the inner wall of the wear sleeve (61) is provided with helical oil grooves (9).
10. The torque-limiting crushing drum according to claim 6, characterized in that the middle of the drum gland (7) is provided with ventilation holes (10) in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120134.1U CN210906406U (en) | 2019-07-17 | 2019-07-17 | Torque-limiting type crushing roller |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921120134.1U CN210906406U (en) | 2019-07-17 | 2019-07-17 | Torque-limiting type crushing roller |
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| CN210906406U true CN210906406U (en) | 2020-07-03 |
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| CN201921120134.1U Active CN210906406U (en) | 2019-07-17 | 2019-07-17 | Torque-limiting type crushing roller |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252473A (en) * | 2019-07-17 | 2019-09-20 | 山西煤矿机械制造股份有限公司 | Distance-limiting type crushing roller |
-
2019
- 2019-07-17 CN CN201921120134.1U patent/CN210906406U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110252473A (en) * | 2019-07-17 | 2019-09-20 | 山西煤矿机械制造股份有限公司 | Distance-limiting type crushing roller |
| CN110252473B (en) * | 2019-07-17 | 2024-06-14 | 山西煤矿机械制造股份有限公司 | Moment-limiting crushing roller |
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