CN104989745A - Low-torque protection torque transmission structure and low-torque protection opening instrument - Google Patents
Low-torque protection torque transmission structure and low-torque protection opening instrument Download PDFInfo
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- CN104989745A CN104989745A CN201510394335.0A CN201510394335A CN104989745A CN 104989745 A CN104989745 A CN 104989745A CN 201510394335 A CN201510394335 A CN 201510394335A CN 104989745 A CN104989745 A CN 104989745A
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- gear ring
- torque
- locking cam
- spool shaft
- flywheel
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Abstract
The invention belongs to the field of torque transmission protection structures, and provides a low-torque protection torque transmission structure and a corresponding low-torque protection opening instrument. The low-torque protection torque transmission structure can rapidly lock torque transmission when the transmission torque is low. Correspondingcomponents such as a cascade flywheel, a locking cam and springs are arranged, and a corresponding fixedly-arranged end cover structure is additionally arranged. When the transmission torque is rapidly decreased due to the fact that an emergent abnormal condition happens in the normal torque transmission process, the axial thrust to the locking camgenerated by the matchingof an inclined face of a second driving gear ring and an inclined face of a second driven gear ring is rapidly decreased, and the spring pushes the locking cam to axially move, so that adriving locking structure and adriven locking structure on the end cover are clamped so as to achieve the rapid locking effect. According to the low-torque protection torque transmission structure, the transmission torque is used as the locking signal control quantity, so that the torque transmission is rapidly locked when the torque is low or after a rope is broken, and safety accidents are more rapidly and effectively avoided in time.
Description
Technical field
The present invention relates to torque transmission operator guards field, particularly relate to a kind of low torque protection torque transmission structure and adopt the low torque protection aperture instrument of this structure.
Background technique
Aperture instrument, is generally also called opening self-detective instrument or gatage detector, is mainly used in the device measured the gatage of various rivers, reservoir, power station and water supply and sewage engineering.But existing aperture instrument is after the disconnected rope of generation, the rapid vanishing of the pulling force due to wire rope, Driving Torque reduces suddenly, and spiral spring will be with movable reel quick rotation, and whole instrument will be subject to serious destruction; In order to play corresponding protective action when there is disconnected rope, needing reel to be locked disconnected rope is timely afterwards, destroying oil cylinder inner wall when preventing wire rope from reclaiming fast or breaking the generation of the accidents such as piston rod.Be disclose a kind of angular velocity produced in the process of spool turns recovery wire rope that utilizes after disconnected rope in the Chinese patent of CN2893654Y to throw the structure that ratchet mesh ratchet gear realizes breaking rope protecting away at publication number, but because it adopts rotational velocity as the controlled quentity controlled variable of signal feed back, namely only have after the rotational velocity of reel reaches certain value, corresponding ratchet just can be thrown out of, and realizes corresponding locking effect; Therefore there is the shortcoming that breaking rope protecting reacts slow in it, simultaneously when locking, because reel has had certain rotational velocity, therefore in locking moment, will produce larger percussion.
Summary of the invention
The present invention solve technical problem be to provide a kind of when transmitting torque is lower can rapidly torque lock transmit low torque protection torque transmission structure, and adopt this mechanism low torque protect aperture instrument; When disconnected rope occurs aperture instrument, reel can be locked in time, avoids the damage causing relevant device.
The technical solution adopted for the present invention to solve the technical problems is: low torque protection torque transmission structure, the end cap comprising series connection flywheel, locking cam, spool shaft, spring and be fixedly installed; Described series connection flywheel and spool shaft are coaxially arranged; Described locking cam is arranged between series connection flywheel and spool shaft, and coordinates with connect flywheel and spool shaft transmission respectively; Described locking cam flywheel of relatively connecting only can axially move, and described spring is arranged between series connection flywheel and locking cam; Spool shaft is provided with the second driven gear ring, and on locking cam, gear ring driven with second is corresponding is provided with the second active gear ring, and described second active gear ring is that inclined-plane coordinates with the second driven gear ring; Wall place corresponding with locking cam on end cap is provided with slave lock fixed structure, locking cam is provided with active lock structure, described active lock structure and above-mentioned slave lock fixed structure corresponding matching, when locking cam move to active lock structure is engaged with slave lock fixed structure time, described spring is in compressive state or nature.
Further: on series connection flywheel, the side corresponding with locking cam is provided with the first active gear ring, locking cam is provided with the first driven gear ring with above-mentioned first active gear ring respective side, and described first active gear ring and the first driven gear ring are male-female engagement.
Further: described slave lock fixed structure is with spool shaft axis for the equally distributed double wedge of running shaft, described active lock structure is be arranged on the latch in series connection flywheel circumference.
Further: each teeth groove in described second active gear ring comprises initiatively bevel phase and initiatively step section, each teeth groove in described second driven gear ring comprises driven bevel phase and driven step section, described active bevel phase is corresponding with driven bevel phase, and described active step section is corresponding with driven step section.
In addition, the present invention also provides a kind of low torque to protect aperture instrument, comprises housing, spiral spring support, spiral spring and reel; Also comprise above-mentioned low torque protection torque transmission structure, described end cap is arranged on housing; One end of described spool shaft is arranged on housing by bearing is rotating, and its other end is arranged on end cap by bearing is rotating; Described drum sheath is in spool shaft and be fixedly connected with spool shaft; Described spiral spring support is fixedly mounted on housing; Described spiral spring is arranged on spiral spring support, and spiral spring coordinates with flywheel of connecting.
Further: described series connection flywheel is rotating to be enclosed within spool shaft; Described locking cam is rotating to be enclosed within spool shaft, and can move axially along spool shaft; Described second driven gear ring is arranged on one end of spool shaft, described locking cam the second driven gear ring with connect between flywheel.
The invention has the beneficial effects as follows: in low torque protection torque transmission structure of the present invention; when driving torque becomes lower suddenly from normal condition; or during vanishing suddenly; by second initiatively gear ring to coordinate produce the thrust of locking cam is reduced rapidly with the inclined-plane of the second driven gear ring; spring force is greater than above-mentioned thrust; therefore spring promotes locking cam; active lock structure on locking cam is engaged with the slave lock fixed structure on end cap, realizes locking effect fast with this.When there is disconnected rope in low torque protection aperture instrument of the present invention, driving torque reduces rapidly, by second initiatively gear ring to coordinate produce the thrust of locking cam is reduced rapidly with the inclined-plane of the second driven gear ring, spring force is greater than above-mentioned thrust, therefore spring promotes locking cam, active lock structure on locking cam is engaged with the slave lock fixed structure on end cap, realize locking cam and flywheel of connecting accordingly thus, spool shaft, the locking of reel etc., make series connection flywheel, spool shaft, reels etc. stop operating, avoid the damage owing to causing relevant device when reclaiming wire rope fast.In addition, by further series connection flywheel and locking cam being adopted the structure be set in spool shaft, the overall structure size of aperture instrument can be reduced to greatest extent.Because the present invention is by the signal controlled variable of driving torque as locking, therefore can makes a response rapidly when torque is lower or after there is disconnected rope, in time reel be locked, the generation of security incident can be avoided more in time, fast and effectively.
Accompanying drawing explanation
Fig. 1 is the explosive view of end cap in the present invention, spool shaft, series connection flywheel and each parts of locking cam;
Fig. 2 is the 3-D view of this locking cam;
Fig. 3 is the 3-D view of spool shaft;
Fig. 4 is the 3-D view of series connection flywheel;
Fig. 5 is sectional view of the present invention;
Fig. 6 is the enlarged diagram of regional area I in Fig. 5;
Locking cam radial development structural drawing when Fig. 7 is normal delivery nominal torque;
Fig. 8 is locking cam radial development structural drawing during transmission low torque;
Be labeled as in figure: housing 1, slave lock fixed structure 11, spiral spring support 2, spiral spring 3, reel 4, the driven gear ring 51 of spool shaft 5, second, dynamic bevel phase 511, driven step section 512, series connection flywheel 6, first be gear ring 61, the driven gear ring 71, second of locking cam 7, first initiatively gear ring 72, initiatively bevel phase 721, initiatively step section 722, active lock structure 73, spring 8, end cap 9, bearing 10, wire rope 101 initiatively.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further described.
As shown in Figures 1 to 8, low torque protection torque transmission structure of the present invention, the end cap 9 comprising series connection flywheel 6, locking cam 7, spool shaft 5, spring 8 and be fixedly installed; Described series connection flywheel 6 is coaxially arranged with spool shaft 5; Described locking cam 7 is arranged between series connection flywheel 6 and spool shaft 5, and coordinates with connect flywheel 6 and spool shaft 5 transmission respectively; Described locking cam 7 relatively series connection flywheel 6 only can axially move, and described spring 8 is arranged between series connection flywheel 6 and locking cam 7; Spool shaft 5 is provided with the second driven gear ring 51, and on locking cam 7, gear ring 51 driven with second is corresponding is provided with the second initiatively gear ring 72, described second initiatively gear ring 72 with the second driven gear ring 51 for inclined-plane coordinates; Wall place corresponding with locking cam 7 on end cap 9 is provided with slave lock fixed structure 11, locking cam 7 is provided with active lock structure 73, described active lock structure 73 and above-mentioned slave lock fixed structure 11 corresponding matching, when locking cam 7 move to active lock structure 73 is engaged with slave lock fixed structure 11 time, described spring 8 is in compressive state or nature.
The working principle of above-mentioned low torque protection torque transmission structure is as follows, it is divided into two kinds of working staties, state when the first is normal driving torque: as shown in Figure 7, when when transmitting normal torque, in spool shaft 5 second driven gear ring 51 is coordinated by inclined-plane with the second active gear ring 72, and due to normal transmission of torque, therefore, when inclined-plane coordinates, the second driven gear ring 51 produces end thrust to the second active gear ring 72, this end thrust makes locking cam 7 be moved to the left after overcoming the elastic force of spring 8, now active lock structure 73 and slave lock fixed structure 11 are separated position, therefore flywheel 6 of connecting can realize the normal torque transmission with spool shaft 5 by locking cam 7.State when the second is low torque: as shown in Figure 8, when some special operation conditions occur, driving torque by normal condition be down to suddenly comparatively low torque time, when wire rope 101 as the aperture instrument in the present invention ruptures, when namely coordinating the end thrust produced to be not enough to the elastic force overcoming spring 8 by the inclined-plane between the second driven gear ring 51 with the second active gear ring 72, spring 8 promotes locking cam 7 and moves right, now active lock structure 73 will engage each other with slave lock fixed structure 11 and coordinate, realize the locking to locking cam 7 and corresponding series connection flywheel 6 and spool shaft 5 etc. thus, now locking cam 7, series connection flywheel 6 and spool shaft 5 etc. will stop operating.
From upper analysis, in the present invention, after transmitting torque is lower than certain value, when inclined-plane namely between the second driven gear ring 51 with the second active gear ring 72 coordinates the end thrust produced to be not enough to the elastic force overcoming spring 8, will lock condition be there is, spool shaft 5 cannot be rotated further.Further, can draw further, by adjusting the elastic force of spring 8, can the corresponding threshold values that the minimum transmitting torque of lock condition occurs, therefore, when choosing spring 8, should select in conjunction with results of calculation.
In addition, locking cam 7 of the present invention relatively series connection flywheel 6 only can axially move, refer to locking cam 7 and only carry out moving axially by spring 8 is flexible relative to series connection flywheel 6, and must not relatively rotate, namely locking cam 7 keeps rotating with flywheel 6 of connecting all the time simultaneously, to realize the transmission of torque.As for the concrete matching relationship of locking cam 7 with flywheel 6 of connecting, various structure can be adopted, as the cooperating structure of guide rail and respective slide slots can be adopted, as long as guarantee that locking cam 7 can move axially, can not rotate relative to flywheel 6 of connecting again simultaneously.General, following structure can be adopted: the side corresponding with locking cam 7 is provided with the first active gear ring 61 on series connection flywheel 6, locking cam 7 is provided with the first driven gear ring 71 with above-mentioned first active gear ring 61 respective side, and described first active gear ring 61 and the first driven gear ring 71 are male-female engagement.
Above-mentioned, the first active gear ring 61 of indication of the present invention and the first driven gear ring 71 are male-female engagement, and specifically refer to, the two is actual is intermeshing relation, to guarantee effective transmission of torque and moving axially of locking cam 7; Do not limit as concrete concaveconvex structure, can refer to structure shown in accompanying drawing.Certainly, from above-mentioned analysis, the mesh volume both it should be greater than the axial internal clearance of locking cam 7.
Certainly, no matter in normal delivery torque or when there is situation about locking, above-mentioned first initiatively gear ring 61 and the first driven gear ring 71 and the second active gear ring 72 and the second driven gear ring 51 all should remain intermeshing situation, namely spool shaft 5, series connection flywheel 6 should keep the consistent of rotation situation with locking cam 7 three, namely rotate simultaneously or lock simultaneously; Therefore, require that the axial internal clearance of corresponding locking cam 7 is less than the mesh volume of corresponding gear ring, specifically carry out setting according to actual conditions.
In addition, in the present invention, slave lock fixed structure 11 can be set to spool shaft 5 axis for the equally distributed double wedge of running shaft, and active lock structure 73 is for being arranged on the latch in series connection flywheel 6 circumference simultaneously; Quantity as double wedge and corresponding latch is generally unrestricted, as long as the two guarantees corresponding meshing relation.Certainly, other also can be adopted can to realize the structure of similar effect.
Indication of the present invention second initiatively gear ring 72 with the second driven gear ring 51 for inclined-plane coordinates, it specifically can refer to accompanying drawing, so-called inclined-plane coordinates, refer to second initiatively gear ring 72 and the second driven gear ring 51 when carrying out transmission of torque, coordinated by contact of incline plane, axial thrust can be produced, and interacted by the size of this thrust and the elastic force of spring 8, realize moving axially locking cam 7; When thrust is greater than the elastic force of spring 8, spring 8 is compressed, and locking cam 7 moves to spring 8 side; When thrust is less than the elastic force of spring 8, spring 8 extends, and locking cam 7 is pushed to opposite side by spring 8.Certainly, same, the mesh volume of the second active gear ring 72 and the second driven gear ring 51 also should be greater than the axial internal clearance of locking cam 7; Namely the second active gear ring 72 should remain the situation of engagement with the second driven gear ring 51, guarantees the transmission of torque of locking cam 7 and spool shaft 5.Certainly, the second active gear ring 72 is considered with the second driven gear ring 51 for inclined-plane coordinates, therefore, in fact locking cam 7 and spool shaft 5 can relatively rotate within the scope of several angle, certainly, angle value is usually less in relative rotation for this, is generally about about the several years.
In addition, coordinated the end thrust to locking cam 7 produced in theory by inclined-plane, its size is subject to the impact of inclined-plane fit angle size and transmitting torque size; Design parameter, can determine according to actual conditions.As for setting position and the setting direction on above-mentioned inclined-plane, general needs determines according to the direction of driving torque and the sense of rotation of corresponding part.
In addition, in order to ensure normal transmitting torque, further each teeth groove in described second initiatively gear ring 72 can be comprised initiatively bevel phase 721 and initiatively step section 722, each teeth groove in described second driven gear ring 51 comprises driven bevel phase 511 and driven step section 512, described active bevel phase 721 is corresponding with driven bevel phase 511, and described active step section 722 is corresponding with driven step section 512.Specifically can refer to shown in accompanying drawing 7 and Fig. 8, the benefit of such setting is when normal delivery torque, the meshing relation of the second active gear ring 72 and the second driven gear ring 51 is situation shown in Fig. 7, now the axial internal clearance of locking cam 7 reaches the limit values, initiatively bevel phase 721 coordinates the end thrust to locking cam 7 produced to increase further again with driven bevel phase 511, avoid the further increase of energy consumption, and, now second initiatively the acting surface of gear ring 72 and transmitting torque between the second driven gear ring 51 to contact with the compression of driven step section 512 primarily of active step section 722 and realize, pressure simultaneously between this seal face can not produce axial thrust load, because this ensure that effective transmission of torque.
Low torque protection torque transmission structure of the present invention; can be used in theory and variously transmit in the structure needing in low torque situation to protect; as can be used on coupling; corresponding series connection flywheel 6 and spool shaft 5 be corresponding two axles needing transmitting torque respectively; locking cam 7 is then as the link of driving torque between the two; be increased in coupling periphery to be fixedly installed and to act on identical fixed block with end cap 9 simultaneously; realize the locking to locking cam 7 by fixed block, and then realize the locking to transmission of torque.
Certainly, the present invention especially can use with on aperture instrument, and by being protected by low torque torque transmission structure to be used in after on aperture instrument, obtain low torque protection aperture instrument of the present invention below, it comprises housing 1, spiral spring support 2, spiral spring 3 and reel 4; Also comprise above-mentioned low torque protection torque transmission structure, described end cap 9 is arranged on housing 1; One end of described spool shaft 5 is arranged on housing 1 by bearing 10 is rotating, and its other end is arranged on end cap 9 by bearing 10 is rotating; Described reel 4 to be enclosed within spool shaft 5 and to be fixedly connected with spool shaft 5; Described spiral spring support 2 is fixedly mounted on housing 1; Described spiral spring 3 is arranged on spiral spring support 2, and spiral spring 3 coordinates with flywheel 6 transmission of connecting.Like this by low torque protection torque transmission structure of the present invention is arranged in aperture instrument cleverly; when there is fracture in the wire rope 101 on aperture instrument; transmitting torque reduces rapidly; corresponding active lock structure 73 and slave lock fixed structure 11 engage rapidly and lock total; reel 4 is stopped operating, after avoiding wire rope 101 to rupture, causes the damage to equipment due to the recovery effect of spiral spring 3.
In addition, as shown in Figure 5, in conjunction with the structural feature of aperture instrument, the present invention is enclosed within spool shaft 5 by rotating for series connection flywheel 6 further; Described locking cam 7 is rotating to be enclosed within spool shaft 5, and can move axially along spool shaft 5; Described second driven gear ring 51 is arranged on one end of spool shaft 5, described locking cam 7 the second driven gear ring 51 with connect between flywheel 6.Like this, that aperture instrument can be done is thinner, and the support simultaneously directly utilizing again spool shaft 5 to move axially as locking cam 7 and guiding element, achieve the further simplification to connected element, make overall structure compacter.
Claims (6)
1. low torque protection torque transmission structure, is characterized in that: the end cap (9) comprising series connection flywheel (6), locking cam (7), spool shaft (5), spring (8) and be fixedly installed; Described series connection flywheel (6) and spool shaft (5) are coaxially arranged; Described locking cam (7) is arranged between series connection flywheel (6) and spool shaft (5), and coordinates with flywheel of connecting (6) and spool shaft (5) transmission respectively; Described locking cam (7) flywheel (6) of relatively connecting only can axially move, and described spring (8) is arranged between series connection flywheel (6) and locking cam (7); Spool shaft (5) is provided with the second driven gear ring (51), correspondingly with the second driven gear ring (51) be provided with the second initiatively gear ring (72) locking cam (7) is upper, described second active gear ring (72) with the second driven gear ring (51) for inclined-plane coordinates; At end cap (9), the upper wall place corresponding with locking cam (7) is provided with slave lock fixed structure (11), locking cam (7) is provided with active lock structure (73), described active lock structure (73) and above-mentioned slave lock fixed structure (11) corresponding matching, when locking cam (7) move to active lock structure (73) is engaged with slave lock fixed structure (11) time, described spring (8) is in compressive state or nature.
2. low torque protection torque transmission structure as claimed in claim 1; it is characterized in that: the upper side corresponding with locking cam (7) of series connection flywheel (6) is provided with the first active gear ring (61); above above-mentioned first active gear ring (61) respective side is provided with the first driven gear ring (71) at locking cam (7), described first active gear ring (61) is male-female engagement with the first driven gear ring (71).
3. low torque protection torque transmission structure as claimed in claim 1; it is characterized in that: described slave lock fixed structure (11) is for being the equally distributed double wedge of running shaft with spool shaft (5) axis, and described active lock structure (73) is for being arranged on the latch in series connection flywheel (6) circumference.
4. the low torque protection torque transmission structure as described in claim 1,2 or 3; it is characterized in that: each teeth groove in described second active gear ring (72) comprises initiatively bevel phase (721) and initiatively step section (722); each teeth groove in described second driven gear ring (51) comprises driven bevel phase (511) and driven step section (512); described active bevel phase (721) is corresponding with driven bevel phase (511), and described active step section (722) is corresponding with driven step section (512).
5. low torque protection aperture instrument, comprises housing (1), spiral spring support (2), spiral spring (3) and reel (4); It is characterized in that: also comprise the low torque protection torque transmission structure according to any one of the claims 1 to 4, described end cap (9) is arranged on housing (1); One end of described spool shaft (5) is arranged on housing (1) by bearing (10) is rotating, and its other end is arranged on end cap (9) by bearing (10) is rotating; Described reel (4) is enclosed within spool shaft (5) and goes up and be fixedly connected with spool shaft (5); Described spiral spring support (2) is fixedly mounted on housing (1); Described spiral spring (3) is arranged on spiral spring support (2), and spiral spring (3) coordinates with flywheel of connecting (6) transmission.
6. low torque protection aperture instrument as claimed in claim 5, is characterized in that: described series connection flywheel (6) is rotating to be enclosed within spool shaft (5); Described locking cam (7) is rotating to be enclosed within spool shaft (5), and can move axially along spool shaft (5); Described second driven gear ring (51) is arranged on one end of spool shaft (5), and described locking cam (7) is positioned at the second driven gear ring (51) with between flywheel of connecting (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394335.0A CN104989745B (en) | 2015-07-07 | 2015-07-07 | Low-torque protection torque transmission structure and low-torque protection opening instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510394335.0A CN104989745B (en) | 2015-07-07 | 2015-07-07 | Low-torque protection torque transmission structure and low-torque protection opening instrument |
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| Publication Number | Publication Date |
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| CN104989745A true CN104989745A (en) | 2015-10-21 |
| CN104989745B CN104989745B (en) | 2017-05-10 |
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| CN201510394335.0A Active CN104989745B (en) | 2015-07-07 | 2015-07-07 | Low-torque protection torque transmission structure and low-torque protection opening instrument |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738836B2 (en) | 2016-11-30 | 2020-08-11 | Saint-Gobain Performance Plastics Rencol Limited | Adjustable torque assembly |
| CN115554628A (en) * | 2022-09-16 | 2023-01-03 | 中煤第三建设（集团）有限责任公司 | Safety rope fixed knot constructs for construction |
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| CN104746485A (en) * | 2015-03-05 | 2015-07-01 | 刘彩 | Water gate opening degree monitoring device |
| CN204755660U (en) * | 2015-07-07 | 2015-11-11 | 中国电建集团成都勘测设计研究院有限公司 | Torque transmission structure and aperture appearance |
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2015
- 2015-07-07 CN CN201510394335.0A patent/CN104989745B/en active Active
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| US3960035A (en) * | 1974-11-01 | 1976-06-01 | Gardner-Denver Company | Torque responsive speed shifting mechanism for power tool |
| US4327821A (en) * | 1979-10-25 | 1982-05-04 | Warn Industries, Inc. | Automatic locking clutch with sliding clutch ring |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10738836B2 (en) | 2016-11-30 | 2020-08-11 | Saint-Gobain Performance Plastics Rencol Limited | Adjustable torque assembly |
| CN115554628A (en) * | 2022-09-16 | 2023-01-03 | 中煤第三建设（集团）有限责任公司 | Safety rope fixed knot constructs for construction |
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|---|---|
| CN104989745B (en) | 2017-05-10 |
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