CN112648307A - Horizontal screw machine differential protection device - Google Patents
Horizontal screw machine differential protection device Download PDFInfo
- Publication number
- CN112648307A CN112648307A CN202011457836.6A CN202011457836A CN112648307A CN 112648307 A CN112648307 A CN 112648307A CN 202011457836 A CN202011457836 A CN 202011457836A CN 112648307 A CN112648307 A CN 112648307A
- Authority
- CN
- China
- Prior art keywords
- disc
- safety
- belt pulley
- seat
- input shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 210000004907 gland Anatomy 0.000 claims description 10
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- F16D43/00—Automatic clutches
- F16D43/02—Automatic clutches actuated entirely mechanically
- F16D43/20—Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
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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
- F16H48/00—Differential gearings
- F16H48/38—Constructional details
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
A differential protection device of a horizontal screw machine comprises a belt pulley, a belt pulley seat, a steel ball, a safety seat, a safety disc, a disc spring, a locking disc and an input shaft, wherein the belt pulley is connected with the belt pulley seat through a bearing, the belt pulley seat is fixedly connected with the input shaft, the belt pulley seat is fixedly connected with a differential shell, a V-shaped groove is formed in the end surface of the belt pulley, the steel ball is arranged in the V-shaped groove, the locking disc is arranged at the output end of the input shaft of the safety seat, the locking disc is fixedly connected with the safety seat in a spiral mode, the disc spring is arranged on one side of the locking disc, the safety disc is arranged on one side of the disc spring, the contact section of the safety disc and the disc spring is in a right-angled triangle shape, the right side of the safety disc is in contact with the steel ball, when the axial force generated by torque decomposition of the rotation of the, the control cabinet closes the feeding system, and the safe operation of the differential is further guaranteed.
Description
Technical Field
The invention relates to the field of screw thread lying machines, in particular to a differential protection device of a screw thread lying machine.
Background
The horizontal screw machine is a processing equipment widely used in solid-liquid separation application, and its working principle is that the rotary drum and screw material-pushing device are rotated at a certain differential rotation speed in the same direction and high speed, the fluid suspended substance formed from liquid and solid is continuously introduced into the interior of screw material-pushing device by means of feeding pipe, and accelerated and fed into the rotary drum, under the action of centrifugal force the heavy solid matter is deposited on the wall of the rotary drum to form slag-depositing layer, the screw material-pushing device can continuously push the deposited solid matter to the conical end of the rotary drum, and discharge it from slag outlet, and the clear liquid produced therewith can be flowed into another end of the rotary drum, and discharged from overflow outlet. Because the feeding of the horizontal screw centrifuge is continuous, the differential rotation speed between the rotary drum and the screw pusher must be continuous to realize the function of continuously processing materials. The differential rotation speed is generated by a differential mechanism, a shell of the differential mechanism is connected with a rotary drum to rotate synchronously, an input shaft is driven by an auxiliary motor, and an output shaft drives a spiral pusher to rotate. The screw pusher is operated to "feel" the dryness of the sediment, which is reflected by the load on which the screw pusher is operated, i.e., the so-called "torque" of the screw pusher at that time, and is generally reflected indirectly from the load of the auxiliary motor. Once the feeding concentration or the feeding amount becomes larger, the torque of the spiral pusher is increased immediately, and if relevant measures are not taken, the materials in the horizontal screw centrifuge are accumulated, the torque is continuously increased, and finally the horizontal screw centrifuge cannot normally operate. If the rated torque of the differential is exceeded, the differential may be damaged. At present, a spiral pusher lacks mechanical protection measures, only adopts electrical control protection measures, and immediately closes a feeding system and enters a low-speed cleaning program or is directly stopped once the current suddenly and greatly rises by monitoring the running current of an auxiliary motor. Because the rotary inertia of the rotary drum and the spiral pusher is very large, even if the machine is stopped and decelerated immediately after overload occurs, the differential mechanism can be damaged, in addition, the electronic components have certain failure rate, the failure possibility exists in the electrical control protection, and for the key part of the differential mechanism, the reliability of the safety protection must be improved.
Disclosure of Invention
The invention aims to provide a protective device for a horizontal screw machine differential mechanism, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides a horizontal screw machine differential protection device which comprises a belt pulley, a belt pulley seat, a steel ball, a safety seat, a safety disc, a disc spring, a locking disc and an input shaft, wherein the belt pulley is connected with the belt pulley seat through a bearing, the belt pulley seat is fixedly connected with the input shaft, the belt pulley seat is fixedly connected with a differential shell, a V-shaped groove is formed in the end surface of the belt pulley, the steel ball is arranged in the V-shaped groove, the safety seat is provided with the locking disc at the output end of the input shaft, the locking disc is spirally and fixedly connected with the safety seat, the disc spring is arranged on one side of the locking disc, the safety disc is arranged on one side of the disc spring, the contact section of the safety disc and the disc spring is a right-angled triangle, the right side of the safety disc is in contact with the steel ball, after the locking disc is screwed, pressure is generated between the safety disc and the steel ball, the safety disc can run under the driving of the belt pulley seat, meanwhile, when the axial force generated by the rotation of the belt pulley and decomposed by the torque is larger than the pressing force of the disc spring transmitted to the steel ball through the safety disc, the steel ball slides out of the V-shaped groove, the belt pulley idles, and the differential mechanism can be prevented from being damaged.
The central line of the V-shaped groove is parallel to the axis of the input shaft, and the maximum opening of the V-shaped groove is positioned at the output end of the input shaft.
The inner cavity of the contact surface of the safety disc and the steel ball is concave, the diameter of the inner cavity is larger than that of the safety seat, and when the steel ball slides out of the V-shaped groove in the end face of the belt pulley, the protrusion arranged on the outer side of the safety disc can prevent the steel ball from sliding out of the device.
The output end of the far input shaft of the safety seat is provided with a gland, and the gland is axially fixed with the safety seat through a screw.
The cross section of the gland is concave.
The safety seat is fixedly connected with the input shaft through a flat key.
The locking dish outside is provided with proximity switch, proximity switch and power electric connection, after the V type recess of steel ball roll-off belt pulley terminal surface, the steel ball promoted the rupture disc, and the rupture disc moves to the proximity switch lower extreme, and proximity switch triggers the rear differential mechanism switch-off signal of transmission, and the feed system is closed to the switch board, avoids damaging differential mechanism.
Compared with the prior art, the invention has the beneficial effects that:
the belt pulley is simple and reasonable in structure, the end face of the belt pulley is provided with the V-shaped groove, the safety disc is connected with the belt pulley through the matching of the steel balls and the V-shaped groove, the steel balls can be prevented from sliding out of the device due to the protruding arrangement of the safety disc, the disc spring is arranged on the other side of the safety disc, when the axial force of torque decomposition generated by the rotation of the belt pulley is greater than the pressure of the disc spring on the steel balls, the safety disc is separated from the safety seat 12 after the steel balls slide out, the belt pulley idles, the failure of the differential mechanism is avoided, and meanwhile, the safety disc moves to the position below the proximity switch, the proximity switch.
Drawings
FIG. 1 is a schematic view of a normal load operation structure of a protection device for a horizontal screw machine differential;
fig. 2 is a schematic view of an overload condition working structure of a horizontal screw machine differential protection device.
In the figure: 1. gland, 2, proximity switch, 3, locking disc, 4, disc spring, 5, safety disc, 6, steel ball, 7, bearing, 8, differential housing, 9, belt pulley seat, 10, belt pulley, 11, input shaft, 12, safety seat, 13 and flat key.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1: as shown in figure 1, a horizontal screw differential protection device comprises a belt pulley 10, a belt pulley seat 9, a steel ball 6, a safety seat 12, a safety disc 5, a disc spring 4, a locking disc 3 and an input shaft 11, wherein the belt pulley 10 is connected with the belt pulley seat 9 through a bearing 7, the belt pulley seat 9 is fixedly connected with the input shaft 11, the belt pulley seat 9 is fixedly connected with a differential housing 8, the end surface of the belt pulley 10 is provided with a V-shaped groove, the steel ball 6 is arranged in the V-shaped groove, the output end of the input shaft 11 of the safety seat 12 is provided with the locking disc 3, the locking disc 3 is fixedly connected with the safety seat 12 in a spiral manner, one side of the locking disc 3 is provided with the disc spring 4, one side of the disc spring 4 is provided with the safety disc 5, the contact section of the safety disc 5 and the disc spring 4 is in a right-angled triangle shape, the right side of the safety disc 5 is, the differential mechanism shell 8 can be driven to synchronously rotate at the same time, the locking disc 3 provides supporting force for the disc spring 4, the section of one surface, opposite to the disc spring 4, of the safety disc 5 is of an inverted trapezoid groove structure, a right-angled triangle is formed by the section of the safety seat 12 and the section of the disc spring 4, the outer edge of the disc spring 4 is in contact with a groove, far away from the disc center, of the safety disc 5, the safety disc 5 presses the steel ball 6 under the elastic action of the disc spring 4, the steel ball 6 is located in a V-shaped groove in the end face of the belt pulley 10, the belt pulley 10 can drive the safety disc 5 to rotate, when the pushing load of the horizontal screw centrifuge exceeds a rated value, as shown in figure 2, the axial force of torque decomposition generated by rotation of the belt pulley 10 is larger than the pressing force of the disc spring 4 transmitted to the steel ball 6 through the safety disc 5, the steel ball 6 slides out. At the moment, the belt pulley 10 and the safety seat 12 are in a disengagement state, the belt pulley 10 idles to achieve the purpose of mechanical protection, the overload disengagement torque of the steel ball 6 can be adjusted by changing the screwing-in length of the locking disc 3, and the screwing-in length of the locking disc 3, namely the compression amount and the elasticity of the disc spring 4 are changed, so that the overload disengagement torque corresponds to different disengagement torques.
The central line of the V-shaped groove is parallel to the axis of the input shaft 11, and the maximum opening of the V-shaped groove is positioned at the output end of the input shaft 11.
The inner cavity of the contact surface of the safety disc 5 and the steel ball 6 is concave, the diameter of the inner cavity is larger than that of the safety seat 12, and the outer side of the steel ball 6 of the safety disc 5 is provided with a bulge which can prevent the steel ball 6 from sliding out of the device when the device runs.
The safety seat 12 is far away from the output end of the input shaft 11 and is provided with a gland 1, and the gland 1 is axially fixed with the safety seat 12 through a screw.
The section of the gland 1 is concave.
The safety seat 12 is fixedly connected with the input shaft 11 through the flat key 13, and the safety seat 12 is driven to rotate by the input shaft 11 and the flat key 13.
Locking 3 outsides of dish are provided with proximity switch 2, proximity switch 2 and power electric connection, after the V type recess on 6 roll-off belt pulleys 10 of steel ball, steel ball 6 promotes rupture disc 5, and rupture disc 5 is located proximity switch 2 lower extremes this moment, triggers proximity switch 2, and proximity switch is with signal transmission to differential mechanism switch board, and the feed system is closed to the switch board to enter low-speed cleaning procedure or directly shut down, avoid damaging differential mechanism.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (7)
1. A horizontal screw differential protection device is characterized by comprising a belt pulley (10), a belt pulley seat (9), a steel ball (6), a safety seat (12), a safety disc (5), a disc spring (4), a locking disc (3) and an input shaft (11), wherein the belt pulley (10) is connected with the belt pulley seat (9) through a bearing (7), the belt pulley seat (9) is fixedly connected with the input shaft (11), the belt pulley seat (9) is fixedly connected with a differential shell (8), the end surface of the belt pulley (10) is provided with a V-shaped groove, the steel ball (6) is arranged in the V-shaped groove, the locking disc (3) is arranged at the output end of the input shaft (11) of the safety seat (12), the locking disc (3) is fixedly connected with the safety seat (12) in a spiral manner, the disc spring (4) is arranged on one side of the locking disc (3), the safety disc (5) is arranged on one side of the disc spring (4), the contact section of the safety disc (5) and the disc spring (4) is a right-angled triangle, and the right side of the safety disc (5) is in contact with the steel ball (6).
2. A sleeping screw differential protection device according to claim 1, characterised in that the centre line of the V-groove is parallel to the input shaft (11) axis, and the maximum opening of the V-groove is at the output end of the input shaft (11).
3. The protection device for the differential of the horizontal screw machine is characterized in that the inner cavity of the contact surface of the safety disc (5) and the steel ball (6) is concave, and the diameter of the inner cavity is larger than that of the safety seat (12).
4. A protection device for a differential of a horizontal screw machine according to claim 1, characterized in that a gland (1) is arranged on the safety seat (12) far away from the output end of the input shaft (11), and the gland (1) is axially fixed with the safety seat (12) through screws.
5. A sleeping screw differential protection device according to claim 4, characterized in that the gland (1) cross-section is concave.
6. A screw horizontal machine differential protection device according to claim 1, characterized in that the safety catch (12) is fixedly connected with the input shaft (11) by a flat key (13).
7. The protection device for the differential of the horizontal screw machine is characterized in that a proximity switch (2) is arranged on the outer side of the locking disc (3), and the proximity switch (2) is electrically connected with a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457836.6A CN112648307A (en) | 2020-12-11 | 2020-12-11 | Horizontal screw machine differential protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011457836.6A CN112648307A (en) | 2020-12-11 | 2020-12-11 | Horizontal screw machine differential protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112648307A true CN112648307A (en) | 2021-04-13 |
Family
ID=75354763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011457836.6A Pending CN112648307A (en) | 2020-12-11 | 2020-12-11 | Horizontal screw machine differential protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112648307A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542884A (en) * | 1993-09-09 | 1996-08-06 | Paul Bohringer | Mechanical overload protection device for machines, particularly jaw crushers |
| US6425837B1 (en) * | 2000-03-13 | 2002-07-30 | Sanden Corporation | Power transmission |
| JP2005344817A (en) * | 2004-06-02 | 2005-12-15 | Sanden Corp | Motive power transmission device |
| CN107716126A (en) * | 2017-11-17 | 2018-02-23 | 成都西部石油装备股份有限公司 | A kind of Novel horizontal decanter centrifuge safety guard |
-
2020
- 2020-12-11 CN CN202011457836.6A patent/CN112648307A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5542884A (en) * | 1993-09-09 | 1996-08-06 | Paul Bohringer | Mechanical overload protection device for machines, particularly jaw crushers |
| US6425837B1 (en) * | 2000-03-13 | 2002-07-30 | Sanden Corporation | Power transmission |
| JP2005344817A (en) * | 2004-06-02 | 2005-12-15 | Sanden Corp | Motive power transmission device |
| CN107716126A (en) * | 2017-11-17 | 2018-02-23 | 成都西部石油装备股份有限公司 | A kind of Novel horizontal decanter centrifuge safety guard |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210413 |
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| RJ01 | Rejection of invention patent application after publication |