CN206680104U - With limit for tonnage without underloading Lever Blocks - Google Patents
With limit for tonnage without underloading Lever Blocks Download PDFInfo
- Publication number
- CN206680104U CN206680104U CN201720088167.7U CN201720088167U CN206680104U CN 206680104 U CN206680104 U CN 206680104U CN 201720088167 U CN201720088167 U CN 201720088167U CN 206680104 U CN206680104 U CN 206680104U
- Authority
- CN
- China
- Prior art keywords
- working end
- tonnage
- limit
- ratchet
- seat
- 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.)
- Expired - Fee Related
Links
Landscapes
- Transmission Devices (AREA)
Abstract
The utility model is related to it is a kind of with limit for tonnage without underloading Lever Blocks, commutation ratchet of the present utility model includes rising working end, declines working end and small torsion spring, the decline working end is arranged on shifting block axle, the rising working end is be hinged with decline working end by articulated section and is connected by small torsion spring with declining working end, the outer for rising working end is provided with holding section, separate or close with declining working end around articulated section rotation with working end is risen, the lower end of the commutation ratchet contacts with push rod spring.The present apparatus can be when no-load and free state be changed, and limit for tonnage friction plate and butterfly spring are sufficiently large, add the reliability of limit for tonnage, durability.Simple in construction, easy to operate, lifting speed is soon and safe, possesses limit for tonnage function, the characteristics of service life is long.
Description
Technical field
The utility model belongs to Lever Blocks field, be related to it is a kind of with limit for tonnage without underloading Lever Blocks.
Background technology
Traditional Lever Blocks brake apparatus is due to structure, in the case of less than rated load 10% or zero load,
The phenomenon for being unable to lift load or load free fall brake failure occurs, here it is the underloading characteristic of Lever Blocks.Due to this
Individual feature, in certain special cases using there is the defects of certain in general Lever Blocks.
To solve this problem, also there are some designs in domestic and international bottle gouard moved by hands producer, by torsion spring to the default lock of friction plate
Clamp force, realize that no-load operates.These design structures are complicated, cumbersome, in the conversion of no-load and free state, it is necessary to by hand
Wheel transfers to one angle of rotation to realize.When free state is changed to idling, it is necessary to tense hoisting chain with left hand
Suspension hook end, handwheel is rotated into an angle again by anglec of rotation when going back, and must come by the angle for rotation of going back with dial-out
Handwheel could be pressed back when consistent, therefore want multi-pass operation to press back handwheel sometimes.Turned round due to be installed on commutation ratchet
Spring, segment space is accounted for, these structures are not easy to install limit for tonnage mechanism additional, have both made to add reluctantly, as limited space, limit for tonnage
Friction plate and butterfly spring, load nut etc. is adjusted to be designed to very narrow, the reliability and durability of limit for tonnage are very limited.
Utility model content
In view of this, the purpose of this utility model be to provide it is a kind of with limit for tonnage without underloading Lever Blocks.
To reach above-mentioned purpose, the utility model provides following technical scheme：
With limit for tonnage without underloading Lever Blocks, including major axis and set gradually on major axis chain hoist wheel, brake seat,
Ratchet, load limiter seat, commutation ratchet, the commutation ratchet being arranged on below commutation ratchet, the ratchet sleeve is on brake seat, institute
Commutation ratchet sleeve is stated on load limiter seat, the commutation ratchet includes rising working end, declines working end and small torsion spring, under described
Drop working end is arranged on shifting block axle, the rising working end by articulated section with decline working end it is be hinged and by small torsion spring with
Decline working end connection, the outer for rising working end is provided with holding section, rotates and declines around articulated section with working end is risen
Working end separates or closure, and the lower end of the commutation ratchet contacts with push rod spring.
Further, the cylindrical of the brake seat is withstood on steel ball on ratchet inwall by connecting a spring.
Further, limit for tonnage friction plate, commutation ratchet, limit for tonnage pad, butterfly spring, butterfly spring pad are cased with the load limiter seat successively
Circle, floor clip and tune carry nut.
Further, spring is disengaged equipped with one between the load limiter seat and brake seat.
Further, in addition to the cam that is arranged on major axis, the right-hand member of the load limiter seat is provided with one of groove, described convex
Wheel is stuck in groove, angle when limitation load limiter seat retreats.
Further, the suspension hook of connection chain hoist wheel is included, the suspension hook is connected by lower hook housing with chain hoist wheel, described
Automatic turn round along device is provided between suspension hook and lower hook housing.
The beneficial effects of the utility model are：When no-load and free state are changed, without handwheel is transferred to, press in；
Due to that need not install torsion spring additional on commutation ratchet, therefore limit for tonnage friction plate and butterfly spring are sufficiently large, the reliability of limit for tonnage, and endurance quality is complete
It is complete to reach life test requirement.The Lever Blocks have it is simple in construction, it is easy to operate, lifting speed soon and it is safe, possess
Limit for tonnage function, the characteristics of service life is long.
Brief description of the drawings
In order that the purpose of this utility model, technical scheme and beneficial effect are clearer, the utility model provides as follows
Accompanying drawing illustrates：
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the structural representation of the utility model embodiment commutation ratchet and the ratchet that commutates；
Fig. 3 is structural representation when the utility model embodiment is in free state；
Fig. 4 is the utility model embodiment in structural representation when being turned clockwise without light condition handle；
Fig. 5 is in structural representation when turning round and stretching out the hand handle counterclockwise without light condition for the utility model embodiment；
Fig. 6 is the structural representation of the utility model embodiment limit for tonnage principle；
Fig. 7 is the enlarged drawing of the utility model embodiment brake seat；
The structural representation of Fig. 8 the utility model embodiment suspension hooks；
Fig. 9 is Fig. 8 sectional view.
Wherein, 1 is major axis, and 2 be short axle, and 3 is drive plate gear, and 4 be flower hole, and 5 be casing, and 6 be chain hoist wheel, and 7 be de-
Spring is opened, 8 be pawl assembly, and 9 be load limiter seat, and 10 be limit for tonnage friction plate, and 11 be commutation ratchet, and 12 be limit for tonnage pad, and 13 are
Disc spring, 14 be disc spring packing ring, and 15 be stop washer, and 16 carry nut to adjust, and 17 be cam, and 18 be handwheel, and 19 be nut, and 20 be to dial
Block, 21 is set axle ahead, and 22 be spring, and 23 be push rod spring, and 24 be handle, and 25 be articulated section, and 26 be small torsion spring, and 27 be rising
Working end, 28 is decline working end, and 29 be steel ball, and 30 be little spring, and 31 be ratchet, and 32 be friction plate, and 33 be brake seat 3,
34 be lower hook housing, and 35 be steel ball, and 36 be holding screw, and 37 be suspension hook.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in detail.
It is this structural representation without underloading Lever Blocks with limit for tonnage as described in Figure 1, including 5 be casing, chain hoist wheel 6
Major axis 1 is cased with hole, brake seat 33 is housed on the spline of major axis 1, ratchet 31 is cased with brake seat 33 and friction plate 32,8 is
The pawl assembly coordinated with ratchet 31, the multiple thread section of major axis 1 are cased with load limiter seat 9, limit for tonnage are cased with successively on load limiter seat 9
Friction plate 10, commutation ratchet 11, limit for tonnage pad 12, butterfly spring 13, butterfly spring packing ring 14, floor clip 15, tune carry nut 16 etc..
Between load limiter seat 9 and brake seat 33 spring 7 is disengaged equipped with one.One of groove is provided with inside the right-hand member of load limiter seat 9, in major axis 1
There is one section of small spline multiple thread outer end, can be inserted in a cam 17, and cam 17 is stuck among the groove of load limiter seat 9, limitation limit
Carry angle when device seat 9 retreats counterclockwise.As shown in fig. 7, being drilled with a spring eye on the diameter of axle of brake seat 33, installation one is small
Spring 30 and steel ball 29, steel ball 29 is withstood on to the inwall of ratchet 31, seat 33 and ratchet 31 processed are kept under underloading and idling
Rotate integrally, when freely filling state, steel ball inside contracts, and and can holding ratchet 31 is motionless, and only brake seat 33 rotates with major axis 1.
As shown in Fig. 2 commutation ratchet is split-type design, including rises working end 27, decline working end 28 and small torsion spring
26, decline working end 28 and be arranged on shifting block axle 21, the rising working end 27 is cut with scissors by articulated section 25 with declining working end 28
Connect and be connected by small torsion spring 26 with declining working end 28, the outer for rising working end 27 is provided with holding section, with rising work
End 27 rotates around articulated section 25, is resetted by small torsion spring 26, and the lower end of the commutation ratchet contacts with push rod spring 23, and 22
For spring.
When being illustrated in figure 3 the present embodiment and being in free state without underloading Lever Blocks with limit for tonnage, shifting block 20 is allocated to
Middle position, shifting block 20 drives shifting block axle 21 and commutation ratchet returns to middle position, rotate counterclockwise handwheel 18, is disengaging the top power of spring 7
The lower release friction plate gap of effect, during free state, steel ball 29 inside contracts, and pawl assembly 8 engages with the teeth groove of ratchet 31, holding spine
Take turns 31 motionless, only brake seat 33 is rotated with major axis 1, you can freely quick to pull hoisting chain.
When being in such as Fig. 4 for the present embodiment with limit for tonnage without underloading Lever Blocks without light condition, shifting block 20 is allocated to
Raise-position is put, and shifting block 20 drives shifting block axle 21 and commutation ratchet to rotate to lifting position, back and forth pulls handle 24, and commutation ratchet rises
Working end 27 declines the inwall of working end 28 against commutation ratchet under the effect of torsion spring 26, and outer holding section is that pawl point is withstood and changed
To the teeth groove of ratchet 11, commutation ratchet 11 is set and then to rotate clockwise, commutation ratchet rises working end 27 and promotes commutation ratchet 11
Turn clockwise, commutation ratchet 11 carries nut 16, floor clip 15, butterfly spring pad 14, butterfly spring 13, limit for tonnage pad 12 by adjusting
It is pressed on limit for tonnage friction plate 10 on load limiter seat 9, so as to drive load limiter seat 9 to rotate clockwise, pressing friction piece 32.Now
Pull the one such as handle 24, commutation ratchet 11, load limiter seat 9, ratchet 31, friction plate 32, brake seat 33, major axis 1 clockwise
Rotation, major axis 1 drive plate gear 3, short axle 2, flower hole 4, chain hoist wheel 6 to rotate together, and chain hoist wheel drives hoisting chain, so as to
Realization is lifted up.In Fig. 5, handle 24 is turned round and stretched out the hand counterclockwise, the rising working end 27 for the ratchet that commutates rotates, gets out of the way and change outward counterclockwise
To the external diameter of ratchet 11, so that commutation 11 return counterclockwise of ratchet will not be driven in the presence of the spring force of push rod spring 23,
Why in general Lever Blocks can not be lifted in the case of no-load and micro- load, when being primarily due to 24 return counterclockwise of handle,
The ratchet that commutates takes back original position counterclockwise under the elastic force effect of push rod spring, and by commutation ratchet.The design is on to spine of commutating
Pawl split design, in handle return counterclockwise, the rising end for the ratchet that commutates rotates outward gets out of the way commutation ratchet, will not band move
To ratchet inverse time return, no underloading function is realized.
By being drilled with a spring eye on the diameter of axle of brake seat 33, a little spring 30 and steel ball 29 are installed, by steel ball 29
The inwall of ratchet 31 is withstood on, keeps seat 33 and ratchet 31 processed to rotate integrally under underloading and idling, the steel when freely filling state
Ball inside contracts, and pawl assembly 8 engages with the teeth groove of ratchet 31, and holding ratchet 31 is motionless, and only brake seat 33 rotates with major axis 1.
Mode of operation and principle during heavy lift is the same as without light condition.
In the present embodiment, limit for tonnage principle as shown in fig. 6, limit for tonnage mechanism by load limiter seat 9, limit for tonnage friction plate 10, limit for tonnage is changed
To ratchet 11, limit for tonnage pad 12, butterfly spring 13, butterfly spring packing ring 14, floor clip 15, load nut 16 is adjusted to form.Limit for tonnage friction plate 10,
Limit for tonnage commutates the empty set such as ratchet 11, limit for tonnage pad 12, helical spring 13, butterfly spring packing ring 14, floor clip 15 on load limiter seat 9,
There is one section of fine thread the end of load limiter seat 9, and it is fine thread to adjust and carry the endoporus of nut 16, adjusts load nut 16 to be spun on load limiter
The end of thread of seat 9.Dextrorotation modulation carry nut 16, adjust carry nut 16 compress floor clip 15, butterfly spring pad 14, butterfly spring 13,
Limit for tonnage pad 12 and limit for tonnage friction plate 10, commutation ratchet 11, limit for tonnage friction plate 10 are when on the end face of load limiter seat 9.Pass through tune
Carry the elastic of nut 16 and adjust the pressure of butterfly spring 13, so as to producing different limit for tonnage power.
The structural representation of the lower hook housing and suspension hook of the present embodiment as shown in Figure 8 and Figure 9, suspension hook 37 by lower hook housing 34 with
Chain hoist wheel 6 is connected, and suspension hook is connected with 37 times hook housings 34 by steel ball, is connected using steel ball, in the case of loaded if
Hoisting chain reverses, and can turn round automatically suitable.
Finally illustrate, preferred embodiment above is only unrestricted to illustrate the technical solution of the utility model, to the greatest extent
The utility model has been described in detail by above preferred embodiment for pipe, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The scope of restriction.
Claims (6)
1. with limit for tonnage without underloading Lever Blocks, including major axis and set gradually on major axis chain hoist wheel, brake seat, spine
Wheel, load limiter seat, commutation ratchet, the commutation ratchet being arranged on below commutation ratchet, the ratchet sleeve are described on brake seat
Ratchet sleeve commutate on load limiter seat, it is characterised in that：The commutation ratchet includes rising working end, declines working end and small torsion
Spring, the decline working end are arranged on shifting block axle, and the rising working end is hinged and led to decline working end by articulated section
Too small torsion spring is connected with declining working end, and the outer for rising working end is provided with holding section, and articulated section is surrounded with working end is risen
Rotation is separated or closed with declining working end, and the lower end of the commutation ratchet contacts with push rod spring.
2. it is according to claim 1 with limit for tonnage without underloading Lever Blocks, it is characterised in that：The brake seat it is cylindrical
Steel ball is withstood on ratchet inwall by connecting a spring.
3. it is according to claim 1 or 2 with limit for tonnage without underloading Lever Blocks, it is characterised in that：On the load limiter seat
Limit for tonnage friction plate, commutation ratchet, limit for tonnage pad, butterfly spring, butterfly spring packing ring, floor clip are cased with successively and adjust load nut.
4. it is according to claim 3 with limit for tonnage without underloading Lever Blocks, it is characterised in that：In the load limiter seat and system
Between dynamic device seat spring is disengaged equipped with one.
5. it is according to claim 1 with limit for tonnage without underloading Lever Blocks, it is characterised in that：Also include being arranged on major axis
Cam, the right-hand member of the load limiter seat is provided with one of groove, and the cam card is in groove, when limitation load limiter seat retreats
Angle.
6. it is according to claim 1 with limit for tonnage without underloading Lever Blocks, it is characterised in that：Also include connection chain hoist wheel
Suspension hook, the suspension hook is connected by lower hook housing with chain hoist wheel, and automatic turn round along device is provided between the suspension hook and lower hook housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088167.7U CN206680104U (en) | 2017-01-23 | 2017-01-23 | With limit for tonnage without underloading Lever Blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720088167.7U CN206680104U (en) | 2017-01-23 | 2017-01-23 | With limit for tonnage without underloading Lever Blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206680104U true CN206680104U (en) | 2017-11-28 |
Family
ID=60396343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720088167.7U Expired - Fee Related CN206680104U (en) | 2017-01-23 | 2017-01-23 | With limit for tonnage without underloading Lever Blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206680104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110027997A (en) * | 2019-03-28 | 2019-07-19 | 浙江双鸟机械有限公司 | The method that integral combined wrench group method and the spanner are assemblied in Lever Blocks |
-
2017
- 2017-01-23 CN CN201720088167.7U patent/CN206680104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110027997A (en) * | 2019-03-28 | 2019-07-19 | 浙江双鸟机械有限公司 | The method that integral combined wrench group method and the spanner are assemblied in Lever Blocks |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106081971A (en) | Machine driving bidirectional self-locking apparatus | |
| CN206680104U (en) | With limit for tonnage without underloading Lever Blocks | |
| CN105604467A (en) | Sliding block switching device and shutter rope winder applying same | |
| CN214662194U (en) | Pneumatic ball valve with automatic detection locking device | |
| CN206386506U (en) | Improved lifting type plug valve | |
| JPS59501822A (en) | winch | |
| CN208264633U (en) | A kind of baling press pushes away rope device | |
| CN208364772U (en) | A kind of halting mechanism and automotive transmission | |
| CN207648181U (en) | Novel plug valve valve body moulding | |
| CN108689323B (en) | No-load lever block | |
| CN108973969A (en) | A kind of high leakproofness hydraulic vehicle braking valve | |
| CN213352309U (en) | Valve core jacking device of plug valve with replaceable seat | |
| CN201297364Y (en) | Labor-saving transmission mechanism | |
| CN2358035Y (en) | Hand winch with automatic brake | |
| CN205204706U (en) | A laborsaving capstan winch of automatic control for $integrateing aquaculture | |
| CN204847903U (en) | Hoist lifting structure | |
| CN206830787U (en) | A kind of Tool Magazine in Machining Centers transmission chain lubricator | |
| CN212775679U (en) | Novel ball valve with pressure rod driving | |
| CN205892614U (en) | Stopper seat | |
| CN218236180U (en) | Anti-fatigue gas storage tank | |
| CN221743325U (en) | Valve handle | |
| CN208624417U (en) | A kind of fishing line reel with improvement clutch switch mechanism | |
| CN214247011U (en) | Novel mechanical locking type automatic door opening and closing device | |
| CN205424047U (en) | Heavy -calibre butterfly valve drive with mechanism and incorporated hand -operated device surge | |
| CN202091619U (en) | Manual operation mechanism of straight stroke regulating valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171128 Termination date: 20190123 |