CN204417005U - A kind of brake clutch device of Lever Blocks - Google Patents
A kind of brake clutch device of Lever Blocks Download PDFInfo
- Publication number
- CN204417005U CN204417005U CN201420810298.8U CN201420810298U CN204417005U CN 204417005 U CN204417005 U CN 204417005U CN 201420810298 U CN201420810298 U CN 201420810298U CN 204417005 U CN204417005 U CN 204417005U
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- torsion spring
- brake
- handwheel
- major axis
- ratchet
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Abstract
The utility model discloses a kind of brake clutch device of Lever Blocks, comprise the brake seat of the major axis being set in Lever Blocks successively, brake ratchet, commutation ratchet, torsion spring seat, handwheel and fixed parts, brake seat and major axis are that circumference is fixing, the both sides of brake ratchet are respectively arranged with friction lining, commutation ratchet is threaded with adopting between major axis, between torsion spring seat and commutation ratchet, circumference is fixing, and on the major axis between torsion spring seat and handwheel, cover has torsion spring; Also be provided with spring steel ball between torsion spring seat and handwheel, the end face of torsion spring seat be provided with the depressed part holding spring steel ball, handwheel and major axis are that circumference is fixing; Handwheel surface is provided with the indication point indicating handwheel and torsion spring seat relative position to change, and torsion spring seat end face is provided with the indicating area of display indication point change in location.Brake clutch device of the present utility model when not taking Lever Blocks apart, can observe directly the wear state of friction lining, thus timely more renewal of facing renewal.
Description
Technical field
The utility model belongs to technical field of crane equipment, is specifically related to a kind of brake clutch device of Lever Blocks.
Background technology
Lever Blocks pulls spanner by manpower manual, and by lever principle, thus obtain the straight line tractive force matched with load, thus drive weight to realize moving up and down.Because Lever Blocks volume is little, lightweight, therefore carry and operate all very convenient, be applicable to the weight of less tonnage.
Existing Lever Blocks, main employing is overlapped successively on major axis brake ratchet, friction lining, commutation ratchet, positioning element, commutation ratchet is threaded with adopting between major axis, during lifting heavy, first the commutation ratchet stirred on spanner engages with commutation ratchet, when pulling spanner, commutation pawl wheel is driven by spanner, during commutation pawl wheel, due to major axis for being threaded, while commutation ratchet circumference is rotated, also along with moving axially, pressing friction sheet, drive brake ratchet rotates forward, braking then can be realized during upset, prevent weight from falling suddenly.During decline weight, pull commutation ratchet and its other end is engaged with commutation ratchet, oppositely pull spanner, weight can be realized and decline.
The patent No. is in the Chinese utility model patent of 200720111423.6, disclose a kind of Lever Blocks and control brake clutch device, on the basis of existing Lever Blocks, lead to when hand-operated hoister empty stop needs lifting chain, a circumferential thrust can be provided to stop mechanism, stop mechanism is braked, when hand-operated hoister empty stop needs to decline fast, can thrust be removed, make chain can increase or decline by fast speed.
But there is a problem in above-mentioned Lever Blocks: because friction lining is the core component of whole Lever Blocks, friction lining is not only related to lifting and the decline of weight, friction disc wear is serious, and brake portion easily lost efficacy, thus produces safety misadventure simultaneously.Because friction lining is arranged in the housing of Lever Blocks, want the wear state knowing friction lining, the housing of Lever Blocks must be taken apart, just can check, therefore, for this weight-lifting equipment of Lever Blocks, in order to safety, must the friction disc wear situation of periodic inspection Lever Blocks, but dismounting Lever Blocks extremely bothers again.
Utility model content
The purpose of this utility model is: in prior art when checking the wear state of Lever Blocks friction lining, there is the problem of dismounting Lever Blocks inconvenience, a kind of brake clutch device of Lever Blocks is provided, by this brake clutch device, the wear pattern that Lever Blocks gets final product Real Time Observation friction lining can be taken apart, when friction disc wear is too much, take Lever Blocks apart in time, more renewal of facing renewal, facilitates and safety.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of brake clutch device of Lever Blocks, comprise the brake seat of the major axis being set in Lever Blocks successively, brake ratchet, commutation ratchet, torsion spring seat, handwheel and fixed parts, and one end is spacing fixing by brake seat, the other end is spacing fixing by fixed parts; Brake seat and major axis are that circumference is fixing, the both sides of brake ratchet are respectively arranged with friction lining, commutation ratchet is threaded with adopting between major axis, between torsion spring seat with commutation ratchet, by mutually engaging, circumference is fixing, on major axis between torsion spring seat and handwheel, cover has torsion spring, one end is stuck in torsion spring seat, and the other end is stuck in handwheel; Also be provided with spring steel ball between torsion spring seat and handwheel, and spring steel ball is nested in handwheel, the end face of torsion spring seat is provided with the depressed part holding spring steel ball, handwheel and major axis are that circumference is fixing; Handwheel surface is provided with the indication point indicating handwheel and torsion spring seat relative position to change, and torsion spring seat end face is provided with the indicating area of display indication point change in location.
Preferably, described indicating area comprise circumferentially be arranged side by side successively initial condition region, operating condition and wear state region.
Preferably, the end face of torsion spring seat is also provided with the recessed groove holding spring steel ball, and recessed groove is along the circumferential direction arranged side by side with depressed part, and along deviating from the direction cup depth of depressed part from the superficial to the deep; Depressed part is corresponding with initial condition region, and recessed groove and operating condition, wear state region are corresponding.
Preferably, described brake seat is spacing fixing by the step on major axis, and described fixed parts adopts nut.
Preferably, adopt spline joint between described brake seat and major axis, between handwheel and major axis, adopt spline joint.
Preferably, the circumferential surface of torsion spring seat is provided with annular knurl.
Preferably, described depressed part is circular hole, is provided with and holds the bushing of spring steel ball in circular hole.Preferably, described brake ratchet is placed on brake seat by ratchet lining.
Owing to have employed technique scheme, the beneficial effects of the utility model are:
The brake clutch device of a kind of Lever Blocks of the present utility model, by arranging indication point on handwheel, torsion spring seat arranges indicating area, the relative position change of handwheel and torsion spring seat is observed by indication point and indicating area, thus understand the wear condition being arranged in the friction lining of Lever Blocks housing, the wear condition that namely Lever Blocks can be observed friction lining need not be taken apart, simple, directly perceived, convenient; And by being provided with cup depth recessed groove from the superficial to the deep, when lifting heavy, reduce the comparative resistance between handwheel and torsion spring seat, the relative position accurately between display handwheel and torsion spring seat changes.
When the indication point of handwheel is indicated to the operating condition of the indicating area on torsion spring seat; due under the effect of torsion spring; guarantee commutation ratchet extrusion friction sheet all the time; in uncharged situation; directly can pull spanner and promote hoisting chain, and drag hoisting chain to provide the power promoting or decline without the need to hand.
When the indication point of handwheel is indicated to the initial condition region of the indicating area on torsion spring seat, can be declined the hoisting chain of light condition fast, if the acceleration/accel of decline hoisting chain is excessive, commutation ratchet then cannot form coaxial rotation with major axis, commutation ratchet automatically can screw in major axis and friction lining is fitted, the indication point of handwheel can be indicated to operating condition automatically, is formed from main brake, the potential safety hazard that the acceleration/accel preventing the hoisting chain of light condition from declining is excessive brought.
When the indication point of handwheel is indicated to the operating condition of the indicating area on torsion spring seat, and decline goods lighter time, can prevent operating personal maloperation, the initial condition region indication point of handwheel being got to indicating area realizes declining fast goods, thus avoids the generation of safety misadventure.
Accompanying drawing explanation
Fig. 1 is Lever Blocks front view of the present utility model.
Fig. 2 is brake clutch device structural representation of the present utility model.
Fig. 3 is brake clutch device decomposing schematic representation of the present utility model.
Fig. 4 is torsion spring seat structural representation of the present utility model.
Mark in figure: 10-brake clutch device, 11-fixed parts, 12-handwheel, 121-indication point, 13-torsion spring, 14-spring steel ball, 15-torsion spring seat, 151-indicating area, 151a-initial condition region, 151b-operating condition, 151c-wear state region, 152-depressed part, 153-recessed groove, 16-commutates ratchet, and 16a-commutates ratchet control end, 17-brake ratchet, 18-friction lining, 19-brake seat, 191-ratchet lining, 20-major axis, 30-hoisting chain, 40-spanner, 50-main part.
Detailed description of the invention
With reference to Fig. 1, Fig. 2, Lever Blocks of the present utility model comprises main part 50, through there being major axis 20 in main part 50, on major axis 20, cover has brake clutch device 10, spanner 40, gear drive (not shown) respectively, on gear drive, cover has hoisting chain 30, brake clutch device 10 action is driven by spanner 40, thus drive major axis 20 to rotate, when major axis 20 rotates, drive the gear drive of major axis 20 end to rotate, thus the hoisting chain 30 on driven gear transmission device promote or declines, thus realizing the lifting of weight.
With reference to Fig. 2, Fig. 3, Fig. 4, the brake clutch device 10 of Lever Blocks of the present utility model, comprise the brake seat 19 of the major axis 20 being set in Lever Blocks successively, brake ratchet 17, commutation ratchet 16, torsion spring seat 15, handwheel 12 and fixed parts 11, and one end is spacing fixing by brake seat 19, the other end is spacing fixing by fixed parts 11, brake seat 19 is spacing fixing by the step on major axis 20, and described fixed parts 11 adopts nut.Brake seat 19 is built with major axis 20 employing and is connected, thus it is fixing to realize circumference, and the both sides of brake ratchet 17 are respectively arranged with friction lining 18, and brake ratchet 17 is placed on brake seat 19 by ratchet lining 191.Commutation ratchet 16 is threaded with adopting between major axis 20, between torsion spring seat 15 with commutation ratchet 16, by mutually engaging, circumference is fixing, on major axis 20 between torsion spring seat 15 and handwheel 12, cover has torsion spring 13, and torsion spring 13 one end is stuck in torsion spring seat 15, and the other end is stuck in handwheel 12; Spring steel ball 14 is also provided with between torsion spring seat 15 and handwheel 12, and spring steel ball 14 is nested in handwheel 12, the end face of torsion spring seat 15 is provided with the depressed part 152 holding spring steel ball 14, depressed part 152 adopts circular hole to design, be filled with bushing in circular hole, can according to the size of steel ball, select corresponding bushing with it, guarantee that the pressure of spring steel ball 14 is certain, 8mm steel ball selected by the steel ball in the present embodiment.Handwheel 12 and major axis 20 are spline joint, thus it is fixing to realize circumference; Handwheel 12 surface is provided with the indication point 121 that instruction handwheel 12 changes with torsion spring seat 15 relative position, and torsion spring seat 15 end face is provided with the indicating area 151 of display indication point 121 change in location.Indicating area 151 comprises initial condition region 151a, the operating condition 151b and wear state region 151c that are circumferentially arranged side by side successively.The circumferential surface of torsion spring seat 15 is provided with annular knurl, is convenient to the rotation of torsion spring seat 15.
During initial condition, the indication point 121 of handwheel 12 is indicated to the initial condition region 151a of indicating area 151 on torsion spring seat 15, spring steel ball 14 simultaneously in the middle of handwheel 12 is arranged in the depressed part 152 on torsion spring seat 15, thus make handwheel 12 and torsion spring seat 15 keep one relative fixing.
The principle of work of Lever Blocks of the present utility model:
When needing lifting heavy, first the commutation ratchet control end 16a on spanner 40 is got to " UP " shelves, commutation ratchet in spanner 40 is engaged with commutation ratchet 16, then on the other hand torsion spring seat 15 is maintained static, another hand rotation hand wheel 12, during initial condition, the indication point 121 of handwheel 12 aims at the initial condition region 151a of indicating area 151 on torsion spring seat 15, after left-hand revolution, indication point 121 aims at the medium position of the operating condition 151b of indicating area 151.In the present embodiment, as shown in Figure 1 and Figure 4, the hook of hoisting chain 30 is positioned at left side, and on major axis 20, the screw thread of corresponding commutation ratchet 16 adopts dextrorotation, and initial condition region 151a, operating condition 151b and wear state region 151c are followed successively by conter clockwise and arrange.Because handwheel 12 and major axis 20 are spline joint, during left-hand revolution handwheel 12, major axis 20 also does left-hand revolution; Because major axis 20 and commutation ratchet 16 are for being threaded, when therefore major axis 20 rotates counterclockwise, commutation ratchet 16 can move towards brake ratchet 17 side, thus extrusion friction sheet 18, realize pretension.Then pull spanner 40 again, control commutation ratchet 16 and rotate clockwise, now, handwheel 12, torsion spring seat 15, commutation ratchet 16, brake ratchet 17 are integrated with major axis 20, rotate simultaneously, drive heavy lift.Meanwhile, if weight drives major axis 20 to rotate backward, major axis 20 acts on the friction lining 18 of brake ratchet 17 by commutation ratchet 16, realizes braking, prevents weight from falling suddenly.By constantly pulling spanner 40, the progressively rising of weight can be realized.
When needs decline weight, the commutation ratchet control end 16a on spanner 40 is got to " DOWN " shelves, commutation ratchet is engaged with commutation ratchet 16.Pull spanner 40, control commutation ratchet 16 to rotate counterclockwise, commutation ratchet 16 is thrown off with the friction lining 18 of brake ratchet 17, the braking of brake off ratchet 17 pairs of major axis 20, major axis 20, under the effect of weight, rotates clockwise, while rotating clockwise, by the commutation ratchet 16 of screw thread fit relatively major axis 20 for rotating counterclockwise, when turn to fit with the friction lining 18 of brake ratchet 17 time, brake ratchet 17 realizes the braking to major axis 20.By constantly pulling spanner 40, the progressively decline of weight can be realized.
When light condition, the commutation ratchet control end 16a on spanner 40 is got to midway location, commutation ratchet is thrown off with commutation ratchet 16 and engages, the indication point 121 of handwheel 12 is aimed at initial condition region 151a simultaneously.Because handwheel 12 and major axis 20 are all positioned at initial position, do not have predetermincd tension between the friction lining 18 commutated on ratchet 16 and brake ratchet 17, therefore brake ratchet 17 cannot realize braking, at this moment, arbitrarily pull hoisting chain 30, the lifting of hoisting chain 30 fast speed can be realized.
Brake clutch device 10 of the present utility model, before lifting heavy, needs original operating condition 151b rotation hand wheel 12 being rotated to indication point 121 and indicate, namely realizes there is predetermincd tension between commutation ratchet 16 and brake ratchet 17.When lifting heavy, if friction lining 18 does not exist wearing and tearing, so the gap of commutating between ratchet 16 and brake ratchet 17 should with basically identical during initial condition, and now the indication point 121 of handwheel 12 is indicated to operating condition 151b.Along with the long-time use of Lever Blocks, can wearing and tearing be there are in friction lining 18, so the gap of commutating between ratchet 16 and brake ratchet 17 can reduce, in order to reduce this gap, commutation ratchet 16 can further rotate on the basis of original major axis 20, at this moment, certain dislocation can be there is in major axis 20 and commutation ratchet 16, because handwheel 12 and major axis 20 are that circumference is fixing, commutation ratchet 16 and torsion spring seat 15 are for being fixed, therefore also can there is corresponding dislocation in handwheel 12 and torsion spring seat 15, indication point on handwheel 12 121 is indicated to the wear state region 151c on torsion spring seat 15, namely illustrate that friction lining 18 is worn.
It is more that friction lining 18 weares and teares, gap between commutation ratchet 16 and brake ratchet 17 is less, the position of rotating between major axis 20 and commutation ratchet 16 is more, rotary shifted more between handwheel 12 and torsion spring seat 15, indication point 121 is indicated to wear state region 151c and just all the more deviates from operating condition 151b, if when the position that indication point 121 indicates is well beyond wear state region 151c, then illustrate that friction lining 18 has needed to change, at this moment Lever Blocks is taken apart, in time more renewal of facing renewal 18.
Owing to being provided with spring steel ball 14 and depressed part 152 between handwheel 12 and torsion spring seat 15, for handwheel 12 and torsion spring seat 15 are clamped down at same circumferential position when initial condition, in order to when friction lining 18 weares and teares, between handwheel 12 and torsion spring seat 15 when there is relative dislocation, can be more prone to relatively rotate, therefore the recessed groove 153 holding spring steel ball 14 is also provided with at the end face of torsion spring seat 15, recessed groove 153 is along the circumferential direction arranged side by side with depressed part 152, and along deviating from the direction cup depth of depressed part 152 from the superficial to the deep; Depressed part 152 is corresponding with initial condition region 151a, and 151c is corresponding for recessed groove 153 and operating condition 151b, wear state region.When there is relative dislocation between handwheel 12 and torsion spring seat 15, the slip that spring steel ball 14 can be more prone in degree of depth recessed groove 153 from the superficial to the deep.
When the indication point 121 of handwheel 12 is indicated to the operating condition 151b of the indicating area 151 on torsion spring seat 15; under effect due to torsion spring 14; guarantee commutation ratchet 16 extrusion friction sheet 18 all the time; in uncharged situation; also can promote hoisting chain 30 by the mode directly pulling spanner 40, and drag without the need to hand the power that hoisting chain 30 provides lifting or decline.
When the indication point 121 of handwheel 12 is indicated to the initial condition region 151a of the indicating area 151 on torsion spring seat 15, can be declined the hoisting chain 30 of light condition fast, if the acceleration/accel of decline hoisting chain 30 is excessive, commutation 16, ratchet cannot form coaxial rotation with major axis 20, commutation ratchet 16 can automatically screw in major axis 20 and fit with friction lining 18, the indication point 121 of handwheel 12 can be indicated to operating condition 151b automatically, formed from main brake, the potential safety hazard that the acceleration/accel preventing the hoisting chain 30 of light condition from declining is excessive brought.
When operating personal decline comparatively low-density cargo time, in order to realize declining fast goods, thus the initial condition region 151a indication point 121 of handwheel 12 being got to indicating area 151 is to realize the quick decline of goods, there is great potential safety hazard in this operation, therefore when decline goods, if acceleration/accel is excessive, commutation 16, ratchet cannot form coaxial rotation with major axis 20, commutation ratchet 16 can automatically screw in major axis 20 and fit with friction lining 18, the indication point 121 of handwheel 12 can be indicated to operating condition 151b automatically, formed from main brake, prevent the potential safety hazard that the maloperation of light condition brings.
Claims (8)
1. the brake clutch device of a Lever Blocks, it is characterized in that, comprise the brake seat (19) of the major axis (20) being set in Lever Blocks successively, brake ratchet (17), commutation ratchet (16), torsion spring seat (15), handwheel (12) and fixed parts (11), and one end is spacing fixing by brake seat (19), the other end is spacing fixing by fixed parts (11); Brake seat (19) and major axis (20) are that circumference is fixing, the both sides of brake ratchet (17) are respectively arranged with friction lining (18), commutation ratchet (16) is threaded with adopting between major axis (20), between torsion spring seat (15) with commutation ratchet (16), by mutually engaging, circumference is fixing, the upper cover of major axis (20) between torsion spring seat (15) and handwheel (12) has torsion spring (13), torsion spring (13) one end is stuck in torsion spring seat (15), and the other end is stuck in handwheel (12); Spring steel ball (14) is also provided with between torsion spring seat (15) and handwheel (12), and spring steel ball (14) is nested in handwheel (12), the end face of torsion spring seat (15) is provided with the depressed part (152) holding spring steel ball (14), handwheel (12) and major axis (20) are that circumference is fixing; Handwheel (12) surface is provided with the indication point (121) that instruction handwheel (12) changes with torsion spring seat (15) relative position, and torsion spring seat (15) end face is provided with the indicating area (151) of display indication point (121) change in location.
2. brake clutch device according to claim 1, it is characterized in that, described indicating area (151) comprise circumferentially be arranged side by side successively initial condition region (151a), operating condition (151b) and wear state region (151c).
3. brake clutch device according to claim 2, it is characterized in that, the end face of torsion spring seat (15) is also provided with the recessed groove (153) holding spring steel ball (14), recessed groove (153) is along the circumferential direction arranged side by side with depressed part (152), and along deviating from the direction cup depth of depressed part (152) from the superficial to the deep; Depressed part (152) is corresponding with initial condition region (151a), and recessed groove (153) and operating condition (151b), wear state region (151c) are corresponding.
4. brake clutch device according to claim 1, is characterized in that, described brake seat (19) is spacing fixing by the step on major axis (20), and described fixed parts (11) adopts nut.
5. brake clutch device according to claim 1, it is characterized in that, adopt spline joint between described brake seat (19) and major axis (20), between handwheel (12) and major axis (20), adopt spline joint.
6. brake clutch device according to claim 1, is characterized in that, the circumferential surface of torsion spring seat (15) is provided with annular knurl.
7. brake clutch device according to claim 1, is characterized in that, described depressed part (152) is circular hole, is provided with and holds the bushing of spring steel ball (14) in circular hole.
8. brake clutch device according to claim 1, is characterized in that, described brake ratchet (17) is placed on brake seat (19) by ratchet lining (191).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810298.8U CN204417005U (en) | 2014-12-18 | 2014-12-18 | A kind of brake clutch device of Lever Blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420810298.8U CN204417005U (en) | 2014-12-18 | 2014-12-18 | A kind of brake clutch device of Lever Blocks |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204417005U true CN204417005U (en) | 2015-06-24 |
Family
ID=53467394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420810298.8U Withdrawn - After Issue CN204417005U (en) | 2014-12-18 | 2014-12-18 | A kind of brake clutch device of Lever Blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204417005U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477807A (en) * | 2014-12-18 | 2015-04-01 | 重庆维大力起重设备有限公司 | Brake clutch device of lever block |
| CN106185678A (en) * | 2016-08-30 | 2016-12-07 | 浙江冠林机械有限公司 | A kind of loop chain tightener |
-
2014
- 2014-12-18 CN CN201420810298.8U patent/CN204417005U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104477807A (en) * | 2014-12-18 | 2015-04-01 | 重庆维大力起重设备有限公司 | Brake clutch device of lever block |
| CN104477807B (en) * | 2014-12-18 | 2016-09-07 | 重庆维大力起重设备有限公司 | A kind of brake clutch device of Lever Blocks |
| CN106185678A (en) * | 2016-08-30 | 2016-12-07 | 浙江冠林机械有限公司 | A kind of loop chain tightener |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150624 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |