CN105179520A - Ratchet and pawl device for crane - Google Patents
Ratchet and pawl device for crane Download PDFInfo
- Publication number
- CN105179520A CN105179520A CN201510648361.1A CN201510648361A CN105179520A CN 105179520 A CN105179520 A CN 105179520A CN 201510648361 A CN201510648361 A CN 201510648361A CN 105179520 A CN105179520 A CN 105179520A
- Authority
- CN
- China
- Prior art keywords
- ratchet
- hole
- fixed
- pieces
- circular groove
- 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.)
- Granted
Links
Abstract
Disclosed is a ratchet and pawl device for a crane. The ratchet and pawl device for the crane is characterized in that one side of a ratchet is provided with a hole, and the hole diameter of the hole is smaller than the inner diameter of a tooth groove addendum circle of the ratchet. The other side of the ratchet is provided with a circular groove, and the diameter of the circular groove is larger than the outer diameter of the tooth groove addendum circle of the ratchet. Center plates are fixed to a shaft sleeve provided with an inner hole key slot. Each center plate is provided with at least one shaft hole, and hinge shafts sleeved with pawls are fixed in the shaft holes. Sleeves provided with springs and push rods are fixed in the center plates in the direction where axes are perpendicular to the planes, which make contact with the action of the push rods, on the pawls. Movable fit clearances are between the inner circumferential face of the tooth groove addendum circle of the ratchet and the outer circumferential faces of the two center plates. Baffles are fixed to the periphery of the circular groove on one end of the ratchet. The ratchet and pawl device has the advantages that the springs are located in the sleeves, so that the springs are very stable, and deflective and unstable states are avoided. The conditions of fractures are avoided. The ratchet and hubs are simple in structure and easy to form. The machining cost is reduced, and meanwhile, a reliable guarantee is provided for safe production of equipment and operating personnel.
Description
Technical field
The present invention relates to speed reducer of crane structure.
Background technique
Fig. 1 is the mechanism map of main lifting mechanism of foundry crane speed reducer, and in figure, I and II is the position signals of two cover click apparatus in mechanism respectively.The click apparatus of prior art as shown in Figure 2, mainly contain the component compositions such as ratchet (1 '), hinge (2 '), ratchet (3 '), push rod (4 '), spring (5 ') and wheel hub (6 '), ratchet (3 ') is hinged by hinge (2 ') and wheel hub (6 ').During normal work, push rod (4 ') top is pressed against on ratchet (3 ') under the effect of spring (5 '), and the head end of ratchet (3 ') withstands on the interior gear teeth of ratchet (1 ') due to the effect of push rod (4 ').When ratchet (1 ') turns clockwise, ratchet (3 ') and wheel hub (6 ') is driven to rotate; When the relative ratchet (3 ') of ratchet (1 ') is rotated counterclockwise, ratchet (1 ') and wheel hub (6 ') are in sliding mode.Existing click apparatus Problems existing is: 1) as shown in Figure 2, the elongate form of push rod (4 '), and the guiding length that the slotted eye that wheel hub (6 ') leaves rises it is shorter, only accounts for 1/3 ~ 1/4 of its length, the action direction of ratchet (3 ') to push rod (4 ') is the radial direction along push rod (4 ') head Curve On The Surface, be in the push rod (4 ') under long-term work, grow that will to occur as shown in Figure 3 bending the time, spring (the 5 ') end face contacted with push rod (4 ') is with push rod (4 ') run-off the straight, spring is under larger lateral forces, larger lateral bending will be there is, lose stable, as shown in Figure 4, time has been grown, spring (5 ') just there will be fracture, the normal work of click apparatus and even whole speed reducer and ladle carne of the braking effect of spring (5 ').2) existing click apparatus is by ratchet (1 ') (as shown in Figure 5, Figure 6) and the restriction of wheel hub (6 ') (as shown in Figure 7, Figure 8) geomery, it is too large that spring (5 ') can not do, so the strength grade of spring (5 ') lower (maximum working load less of maximum functional amount of deformation), the life-span is shorter.3) moulding of ratchet (1 ') and wheel hub (6 ') is complicated, and processing difficulties, manufacture cost is higher.The master that click apparatus is used for the ladle carne of handling ladle hoists in transmission system, and the safety in production of fracture to its equipment of click apparatus medi-spring brings hidden danger; The spring of fracture to be changed, gear assembling shown in Fig. 1 all need be laid down, lubricant oil in box body of speed reducer is all outwelled, spring breakage disintegrating slag bottom box body of speed reducer is cleaned out, then new lubricant oil is changed to, the click apparatus assembled by gear again and repair loads, and changes the expense that spring needs to consume certain human and material resources and equipment, and impact production.
Can recognize that the subject matter that the click apparatus of prior art exists is from above introduction: the effect of drawn stem (4 ') deflecting force spring (5 ') work, stability is bad, easy unstability and rupturing.Spring (5 ') is by the restriction of wheel hub (6 ') shape, and size is little, and strength grade is low, and the life-span is short.Ratchet (1 ') and wheel hub (6 ') complex-shaped, shaping relative difficulty, manufacture cost is high.Change spring (5 ') need, by the device of speed reducer again dismounting one time, need to consume human and material resources, equipment impact of stopping work is produced.The master that click apparatus is used for the ladle carne of handling ladle hoists in transmission system, and the safety in production of fracture to its equipment of click apparatus medi-spring (5 ') brings hidden danger.
Summary of the invention
For solve in prior art the click apparatus adopted spring works in drawn stem deflecting force the easy unstability of effect and rupture, size is little, strength grade is low, working life is short, the master that click apparatus is used for the ladle carne of handling ladle hoists in transmission system, the adverse effect and potential safety hazard of normally producing and bringing are given in the fracture of spring, solve the complex-shaped of ratchet and wheel hub simultaneously, shaping relative difficulty, the technical problem that manufacture cost is high, the present invention proposes following technological scheme: a kind of hoist click apparatus, it has following technical characteristics: ratchet side is provided with hole, the aperture in this hole is less than the alveolus top circle internal diameter of ratchet.The opposite side of ratchet is provided with circular groove, and the diameter of this circular groove is greater than the alveolus root circle external diameter of ratchet.Two pieces of round parallel middle parts being fixed on the axle sleeve being provided with inner hole key slot of former.Two pieces of round formers are at least provided with an axis hole, at least one cover has the hinge of ratchet to be fixed in this axis hole, and at least one is equipped with spring fixes by the direction of axis with the plane orthogonal that ratchet contacts with push rod effect in parallel two pieces of round formers with the sleeve of push rod.In present case, the axis hole quantity that two pieces of round formers are provided with is 6, and cover has the hinge quantity of ratchet to correspond to 6, and the sleeve quantity of fixing by the Vertical direction of axis and the plane that ratchet contacts with push rod in parallel two pieces round formers also corresponds to 6.It is activity matching gap between the alveolus top circle inner peripheral surface of ratchet and two pieces of round former outer peripheral surfaces.Baffle plate is fixed on the circular groove periphery of ratchet side.In present case, baffle plate is fixed on the circular groove periphery of ratchet side by screw.
The hoist click apparatus of technique scheme is adopted to have obvious advantage: under the overall sizes of identical click apparatus, spring is in sleeve, highly stable, or else spring there will be deflection, instability status, and the working life of spring greatly improves.The size of spring can be done greatly according to device structure, thus improves the strength grade (maximum working load of spring and maximum functional amount of deformation) of spring.Change the slender proportion of push rod, push rod is in sleeve mostly, or else can the situation that ruptures of run-off the straight and occurring.Ratchet and wheel hub (two pieces of round formers and the assemblying body of axle sleeve being provided with inner hole key slot) simple shape, is easy to shaping, simplifies processing technology, greatly cut down finished cost.After adopting hoist click apparatus of the present invention, the spare part of click apparatus is estimated within several years, not need to change, even if arrived the overhaul time of equipment, also spare part can not be changed because of the quality problems of click apparatus, the maintenance expenses of saving equipment, simultaneously for the safety in production of equipment and manipulation personnel provides reliable guarantee.
Accompanying drawing explanation
Fig. 1 is the structural scheme of mechanism of main lifting mechanism of foundry crane speed reducer, and in figure, I and II is two positions of cover click apparatus in mechanism respectively;
Fig. 2 is the structural representation of the hoist click apparatus of prior art;
Fig. 3 is the bent state of sequence number 4 ' part push rod in Fig. 2;
Fig. 4 is the lateral bending heeling condition of sequence number 5 ' part spring in Fig. 2;
Fig. 5 is the plan view of sequence number 1 ' part ratchet in Fig. 2;
Fig. 6 is the right sectional view of sequence number 1 ' part ratchet in Fig. 5;
Fig. 7 is the plan view of sequence number 6 ' part wheel hub in Fig. 2;
Fig. 8 is the left view of sequence number 6 ' part wheel hub in Fig. 7;
Fig. 9 is hoist click apparatus structural representation of the present invention;
Figure 10 is the A-A sectional view in Fig. 9;
Figure 11 is the plan view of sequence number 1 part ratchet in Fig. 9;
Figure 12 is the right sectional view of sequence number 1 part ratchet in Figure 11;
Figure 13 is the plan view of sequence number 10 part circle former and sequence number 11 part sleeve combination in Fig. 9;
Figure 14 is the left sectional view of Figure 13;
Figure 15 be in Fig. 9 sequence number be 4 part push rod, sequence number be 5 part spring, sequence number be the combination assembling schematic diagram of the part sleeve of 6;
Figure 16 is the plan view of Figure 15;
In figure: I. click apparatus; II. click apparatus; 1. ratchet; 2. hinge; 3. ratchet; 4. push rod; 5. spring; 6. sleeve; 7. baffle plate; 8. hole; 9. circular groove; 10. justify former; 11. axle sleeves.; 1 '. ratchet; 2 '. hinge; 3 '. ratchet; 4 '. push rod; 5 '. spring; 6 '. wheel hub.
Embodiment
The technical characteristics of this hoist click apparatus of the present invention is: ratchet 1 side is provided with hole 8, and the aperture in this hole 8 is less than the alveolus top circle internal diameter of ratchet 1.The opposite side of ratchet 1 is also provided with circular groove 9, and the diameter of this circular groove 9 is greater than the alveolus root circle external diameter of ratchet 1.Two pieces of round former 10 parallel middle parts being fixed on the axle sleeve 11 being provided with inner hole key slot are adopt welding manner to fix in present case.The periphery of these two pieces round formers 10 is at least provided with an axis hole, and at least one cover has the hinge 2 of ratchet 3 to be fixed in this axis hole.At least one is equipped with spring 5 fixes with the direction that ratchet 3 acts on push rod 4 plane orthogonal contacted by axis in the round former 10 of these parallel two pieces with the sleeve 6 of push rod 4.In present case, the axis hole quantity that two pieces of round former 10 peripheries are provided with is 6, cover has hinge 2 quantity of ratchet 3 to correspond to 6, also corresponds to 6 in parallel two pieces round formers 10 by sleeve 6 quantity that axis is fixing with the Vertical direction of the plane that ratchet 3 contacts with push rod 4.It is activity matching gap between the outer peripheral surface of the alveolus top circle inner peripheral surface of ratchet 1 and two pieces of round formers 10.Baffle plate 7 is fixed on the periphery of circular groove 9, and in present case, baffle plate 7 is screwed the periphery of the side circular groove 9 in ratchet 1.
During assembling, ratchet 3 is articulated and connected by hinge 2 and circle former 10.First spring 5 loads in sleeve 6, and then is loaded in sleeve 6 by push rod 4.Sleeve 6 is fixed with circle former 10, and present case adopts welding manner.The internal-round gear tip circle surface cover of ratchet 1 is contained on the maximum periphery of round former 10, and ratchet 1 can rotate relative to round former 10.Be screwed in baffle plate 7 present case in the circular groove 9 of ratchet 1, restriction circle former 10 is relative to the axial float of ratchet 1.
The basic principle of hoist click apparatus of the present invention is: during work, and push rod 4 is under the effect of spring 5, and top is pressed on ratchet 3, forces ratchet 3 to rotate around hinge 2, the cephalic par of ratchet 3 is pressed on the interior gear teeth of ratchet 1.Fig. 9 shows, and when ratchet 1 turns clockwise, drives ratchet 3 and circle former 10 to rotate.When the relative ratchet 3 of ratchet 1 is rotated counterclockwise, ratchet 1 is in sliding mode with circle former 10.
Hoist click apparatus of the present invention compared with the major advantage of the click apparatus of prior art is, under the overall sizes of identical click apparatus, spring 5 is in sleeve 6, and spring 5 there will not be deflection, instability status, greatly can improve the working life of spring 5 thus.The size of spring 5 can be done greatly, improves the strength grade (maximum working load of spring 5 and maximum functional amount of deformation) of spring 5 thus the working life of raising spring 5.Change the slenderness ratio of push rod 4, make push rod 4 mostly be in sleeve 6, thus stopped push rod 4 run-off the straight and occurred the phenomenon that ruptures.Ratchet 1 with by the parallel simple shape being fixed on the wheel hub that the axle sleeve 11 that is provided with inner hole key slot forms of two pieces of round formers 10, simplify processing technology, greatly cut down finished cost.The master that hoist click apparatus is used for ladle carne hoists in transmission system, and the safety in production for personnel, equipment provides reliable guarantee.
Claims (3)
1. a hoist click apparatus, it is characterized in that: ratchet (1) side is provided with hole (8), the aperture in this hole (8) is less than the alveolus top circle internal diameter of described ratchet (1), the opposite side of described ratchet (1) is provided with circular groove (9), the diameter of this circular groove (9) is greater than the alveolus root circle external diameter of described ratchet (1), two pieces of parallel middle parts being fixed on the axle sleeve (11) being provided with inner hole key slot of round former (10), described two pieces of round former (10) peripheries are at least provided with an axis hole, at least one cover has the hinge of ratchet (3) (2) to be fixed in this axis hole, at least one is equipped with spring (5) fixes with the sleeve (6) of push rod (4) above acts on by axis and ratchet (3) plane orthogonal contacted in described two pieces of parallel round formers (10) direction with push rod (4), it is activity matching gap between the alveolus top circle inner peripheral surface of ratchet (1) and described two pieces of round former (10) outer peripheral surfaces, baffle plate (7) is fixed on described circular groove (9) periphery.
2. hoist click apparatus according to claim 1, it is characterized in that: the axis hole quantity that described two pieces of round former (10) peripheries are provided with is 6, described cover has the hinge of ratchet (3) (2) quantity to correspond to 6, corresponds to 6 in described two pieces of parallel round formers (10) by sleeve (6) quantity that the Vertical direction of the upper plane contacted with push rod (4) of axis and ratchet (3) is fixing.
3. hoist click apparatus according to claim 1, is characterized in that: described baffle plate (7) is fixed on the periphery of the side circular groove (9) of described ratchet (1) by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648361.1A CN105179520B (en) | 2015-10-09 | 2015-10-09 | Crane click apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510648361.1A CN105179520B (en) | 2015-10-09 | 2015-10-09 | Crane click apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105179520A true CN105179520A (en) | 2015-12-23 |
| CN105179520B CN105179520B (en) | 2017-08-01 |
Family
ID=54901841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510648361.1A Active CN105179520B (en) | 2015-10-09 | 2015-10-09 | Crane click apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105179520B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508461A (en) * | 2016-02-21 | 2016-04-20 | 上海洲跃生物科技有限公司 | High-load-carrying pin column type overrunning clutch |
| CN109952447A (en) * | 2016-11-10 | 2019-06-28 | 博格华纳公司 | Fan-shaped clutch |
| CN113237626A (en) * | 2021-05-18 | 2021-08-10 | 山东金池重工股份有限公司 | Wear-resistant steel ball falling impact composite testing machine |
| CN113352257A (en) * | 2021-06-07 | 2021-09-07 | 国网河北省电力有限公司鸡泽县供电分公司 | Electric power overhaul tool |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287231A (en) * | 1999-06-30 | 2001-03-14 | 希尔蒂股份公司 | Clutch for drilling tool |
| CN2781075Y (en) * | 2004-12-07 | 2006-05-17 | 张天宇 | Bicycle free wheel |
| WO2011054807A1 (en) * | 2009-11-06 | 2011-05-12 | Hilti Aktiengesellschaft | Torque coupling |
| CN203756795U (en) * | 2014-02-19 | 2014-08-06 | 泰星减速机股份有限公司 | Reducer with internal-teeth ratchet wheel and pallet brake |
| CN204985425U (en) * | 2015-10-09 | 2016-01-20 | 大连华锐重工起重机有限公司 | Ratchet pawl device for hoist |
-
2015
- 2015-10-09 CN CN201510648361.1A patent/CN105179520B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1287231A (en) * | 1999-06-30 | 2001-03-14 | 希尔蒂股份公司 | Clutch for drilling tool |
| CN2781075Y (en) * | 2004-12-07 | 2006-05-17 | 张天宇 | Bicycle free wheel |
| WO2011054807A1 (en) * | 2009-11-06 | 2011-05-12 | Hilti Aktiengesellschaft | Torque coupling |
| CN203756795U (en) * | 2014-02-19 | 2014-08-06 | 泰星减速机股份有限公司 | Reducer with internal-teeth ratchet wheel and pallet brake |
| CN204985425U (en) * | 2015-10-09 | 2016-01-20 | 大连华锐重工起重机有限公司 | Ratchet pawl device for hoist |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508461A (en) * | 2016-02-21 | 2016-04-20 | 上海洲跃生物科技有限公司 | High-load-carrying pin column type overrunning clutch |
| CN105508461B (en) * | 2016-02-21 | 2017-10-31 | 上海洲跃生物科技有限公司 | A kind of high-mechanic pin column type freewheel clutch |
| CN109952447A (en) * | 2016-11-10 | 2019-06-28 | 博格华纳公司 | Fan-shaped clutch |
| CN113237626A (en) * | 2021-05-18 | 2021-08-10 | 山东金池重工股份有限公司 | Wear-resistant steel ball falling impact composite testing machine |
| CN113352257A (en) * | 2021-06-07 | 2021-09-07 | 国网河北省电力有限公司鸡泽县供电分公司 | Electric power overhaul tool |
| CN113352257B (en) * | 2021-06-07 | 2023-02-07 | 国网河北省电力有限公司鸡泽县供电分公司 | Electric power overhaul tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105179520B (en) | 2017-08-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105179520A (en) | Ratchet and pawl device for crane | |
| CN204400442U (en) | Motor bogie suspender | |
| CN204985425U (en) | Ratchet pawl device for hoist | |
| CN204162292U (en) | A kind of 550T load hook group | |
| CN105114598A (en) | Relieving structure for bending stress of tooth roots of straight bevel gear | |
| CN201999622U (en) | Hoisting device for working roller or intermediate roller | |
| CN202790041U (en) | Gear shaft | |
| CN209668624U (en) | A kind of crane hook assembly | |
| CN105314103A (en) | Rotorcraft transmission gear | |
| CN102780179B (en) | The multiple general line hanging hook of wire of 66kV-220kV | |
| CN207454586U (en) | A kind of attachment device of height limitator and retarder | |
| CN208100371U (en) | New mechanical arm boom structure | |
| CN205173680U (en) | Ball valve shutter | |
| CN205534135U (en) | Poor planetary gear reducer's of few tooth that gradually bursts at seams inner support structure | |
| CN203201994U (en) | Gear shaft | |
| CN109733986A (en) | A kind of crane hook assembly | |
| CN103967947A (en) | Method for improving coaxiality of couplers | |
| CN105819333B (en) | A kind of travelling crane truck deceleration unit | |
| CN101665222B (en) | Horizontal screw jack | |
| CN205575396U (en) | Crane becomes special assembly and disassembly tools of width of cloth guiding axle | |
| CN205503797U (en) | Encoder coupler | |
| CN201227743Y (en) | Eccentric jacking device | |
| CN204980811U (en) | Modified is used for hoist cable utensil of jack -up | |
| CN202462488U (en) | Guide wheel capable of being reused | |
| CN202914633U (en) | Gapless reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |