CN204038933U - A kind of no-load Lever Blocks - Google Patents
A kind of no-load Lever Blocks Download PDFInfo
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- CN204038933U CN204038933U CN201420476145.4U CN201420476145U CN204038933U CN 204038933 U CN204038933 U CN 204038933U CN 201420476145 U CN201420476145 U CN 201420476145U CN 204038933 U CN204038933 U CN 204038933U
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- ratchet
- torsion spring
- installation portion
- mount pin
- handwheel
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Abstract
The utility model provides a kind of no-load Lever Blocks, belongs to field of mechanical technique.It solve existing cucurbit and adopt load brake, can not fast lifting chain time unloaded; When adopting pawl-and-gearing to prevent from reversing, the technical matterss such as the angle of ratchet rollback is larger.This no-load Lever Blocks, comprise casing, major axis is provided with in casing, major axis sheathed brake seat, ratchet, commutation ratchet, cam, handwheel and torsion spring seat in turn from the inside to the outside, arrange the first torsion spring between torsion spring seat and handwheel and carry out pressing handwheel, arrange the second torsion spring to compress commutation ratchet between handwheel and commutation ratchet, the first torsion spring is conter clockwise torsion spring, second torsion spring is cw torsion spring, and the torsion of the first torsion spring is greater than the torsion of the second torsion spring; Also be provided with adapter plate in housing, adapter plate be provided with ratchet one and ratchet two, ratchet one and ratchet two are symmetrical arranged relative to the line of centers of ratchet.The utility model has can no-load fast lifting, hoisting speed is fast and safety is high advantage.
Description
Technical field
The utility model belongs to field of mechanical technique, relates to a kind of Lever Blocks, particularly a kind of no-load Lever Blocks.
Background technology
Lever Blocks is that a use is simple, Manual hoisting instrument easy to carry.The operations such as Lever Blocks can carry out promoting, draw, decline, calibration.Hoisting capacity is generally no more than 50T, and the equipment being widely used in the industries such as shipbuilding, electric power, transport, building, mine, post and telecommunications is installed, article lifting, parts tractive etc.
Through retrieval, disclose a kind of Lever Blocks [patent No.: ZL 200920114164.1 in Chinese patent literature; Authorization Notice No.: CN 201343409Y].This Lever Blocks is mainly comprise with lower component: major axis, splined hole gear, hook assembly, left and right wall assembly, guide wheel, gear carrier bar, ratchet, drg, ratchet, Friction disk, cam, shell, hoisting chain, lower hook assembly, only lock ring assembly, jam nut, sprocket shaft forms, it is characterized in that: hook assembly is fixed by hook beam and left and right wall assembly, left and right wall assembly is fixed by strut bar and shell, lower hook assembly is fixed on one end of hoisting chain, and the side of sprocket shaft arranges guide wheel, and left and right, the bottom wall assembly of sprocket shaft arranges gear carrier bar, the right-hand member of major axis is equipped with ratchet successively, ratchet right-hand member is connected with handle, and taper knob is in the outside of commutation ratchet, and it is left, right two ends are flexibly connected with handwheel and ratchet case respectively, and drg is contained in inside spanner, and the brake seat of drg installs Friction disk, and ratchet case is arranged on the right side plan of frame, chain guides, sprocket shaft is arranged on the centre of frame, and forms a secondary hoist mechanism rotated with stop mechanism and the ratchet that commutates.。
Although cucurbit rapid operation disclosed in this patent, this cucurbit adopts load brake, can not fast lifting chain time unloaded, inefficiency; When adopting pawl-and-gearing to prevent from reversing, the angle of ratchet rollback is comparatively large, and hoisting speed is comparatively slow, and there is potential safety hazard, therefore, it is necessary for designing a kind of no-load Lever Blocks.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes a kind of no-load Lever Blocks, and this Lever Blocks has can no-load fast lifting, hoisting speed is fast and safety is high feature.
The purpose of this utility model realizes by following technical proposal: a kind of no-load Lever Blocks, comprise casing, major axis is provided with in casing, described major axis sheathed brake seat in turn from the inside to the outside, ratchet, commutation ratchet, cam, handwheel and torsion spring seat, it is characterized in that, first torsion spring is set between described torsion spring seat and handwheel and carrys out pressing handwheel, between described handwheel and commutation ratchet, the second torsion spring is set to compress commutation ratchet, described first torsion spring is conter clockwise torsion spring, second torsion spring is cw torsion spring, and the torsion of the first torsion spring is greater than the torsion of the second torsion spring, also adapter plate is provided with in described casing, described adapter plate is provided with ratchet one and ratchet two, described ratchet one and ratchet two are symmetrical arranged relative to the line of centers of ratchet, one end of described ratchet one is installation portion one, the other end of ratchet one is operate portions one, described installation portion one offers rounded mounting hole one, one end of described ratchet two is installation portion two, the other end of ratchet two is operate portions two, described installation portion two offers rounded mounting hole two, distance between described operate portions one and the hole heart of mounting hole one is A, distance between described operate portions two and the hole heart of mounting hole two is B, described A is greater than B.
The principle of work of this no-load Lever Blocks is as follows, fast state: torsion spring seat pushes down handwheel by the first torsion spring, handwheel passes through cam orientation, when extracting handwheel, because the effect torsion spring seat of the first torsion spring can rotate clockwise, the effect commutation ratchet of the second torsion spring can rotate counterclockwise, and the ratchet that commutates like this will depart from ratchet, so pawl-and-gearing can not produce braking effect, quick rising or the decline of Lever Blocks so just can be realized; Lifting state: torsion spring seat pushes down handwheel by the first torsion spring, handwheel passes through cam orientation, second torsion spring tightens commutation ratchet, commutation ratchet makes ratchet stop extremely, rotate handwheel, handwheel drives commutation pawl wheel, commutation ratchet kills brake seat by ratchet, commutation ratchet drives ratchet and brake seat to rotate, along with the rotation of ratchet, the ratchet contacted with ratchet two with ratchet one produces contrary rotational force can to ratchet one and ratchet two, and ratchet one and ratchet two are under this force, can exit from the tooth root of ratchet successively, realize the lifting of weight; After completing heavy lift, ratchet rollback can be prevented by ratchet one and ratchet two, realize its automatic brake.
The difference of described A and B is the half of the ratchet length of ratchet.
The length of ratchet one and ratchet two is unequal, adopt this structure, when tooth top position at ratchet of the operate portions one of ratchet one, the operate portions two of ratchet two can block ratchet, when tooth top position at ratchet of the operate portions two of ratchet two, the operate portions one of ratchet one can block ratchet, only has when the operate portions one of ratchet one and the operate portions two of ratchet two all do not block ratchet, ratchet is meeting rollback, and safety is high.
Described adapter plate is fixed with mount pin one, described mounting hole one is set on mount pin one, described mount pin one is also arranged with torsion spring one, and one end of described torsion spring one acts on mount pin one, and the other end of torsion spring one acts on the installation portion one of ratchet one; Described adapter plate is fixed with mount pin two, described mounting hole two is set on mount pin two, described mount pin two is also arranged with torsion spring two, and one end of described torsion spring two acts on mount pin two, and the other end of torsion spring two acts on the installation portion two of ratchet two.
By the effect of torsion spring one, the operate portions one of ratchet one can be made to contact all the time with ratchet, good operating stability; By the effect of torsion spring two, the operate portions two of ratchet two can be made to contact all the time with ratchet, good operating stability.
The upper end of described mount pin one is also provided with the jump ring one that can prevent the installation portion one of ratchet one from departing from it, and the lower surface of described jump ring one contacts with the installation portion one of ratchet one; The upper end of described mount pin two is also provided with the jump ring two that can prevent the installation portion two of ratchet two from departing from it, and the lower surface of described jump ring two contacts with the installation portion two of ratchet two.
Jump ring one can be fixed on fast the upper end of mount pin one by Circlip tongs, can position ratchet one, easy accessibility, location are fast; Jump ring two can be fixed on fast the upper end of mount pin two by Circlip tongs, can position ratchet two, easy accessibility, location are fast.
Brake facing is posted admittedly in described ratchet two sides, and wherein the brake facing of a side reclines the end face of commutation ratchet, and the brake facing of another side reclines the end face of brake seat.
By the twisting force of the second torsion spring, make commutation ratchet stop extremely by brake facing by ratchet, Lever Blocks so just can being made when not having weight, can work.
Recessed spline on the perisporium of described major axis, the internal perisporium projection female splines of described brake seat, described female splines is embedded in spline and forms clamping and be connected.
By adopting spline joint between brake seat and major axis, the ability of transmitting torque is strong, directional tagging good.
Described major axis periphery is also arranged with spanner, and described spanner is sheathed on commutation ratchet periphery.
Commutation pawl wheel can be driven, rapid operation by spanner.
Described spanner and casing form clamping and are connected, and curvedly in described spanner one side ports establish snap fit, and the port of described casing arranges draw-in groove, and described snap fit inlay card enters in draw-in groove to be formed and is connected.
By embedding in the draw-in groove on casing by the snap fit on spanner, spanner dismounting fast, conveniently.
In the fast lifting structure of above-mentioned lever hoist, there is setscrew nut described major axis end by Screw assembly, and described setscrew nut leans torsion spring seat and forms fastening assembling.
Torsion spring seat and major axis can be fixed by setscrew nut, location is reliable, cost is lower.
Compared with prior art, this no-load Lever Blocks has the following advantages:
1, the utility model adopts above technical scheme: when extracting handwheel, because the effect torsion spring seat of the first torsion spring can rotate clockwise, the effect commutation ratchet of the second torsion spring can rotate counterclockwise, such commutation ratchet will depart from ratchet, so pawl-and-gearing can not produce braking effect, quick rising or the decline of Lever Blocks so just can be realized; By the twisting force of the second torsion spring, make commutation ratchet stop extremely by brake facing by ratchet, namely pawl-and-gearing can produce braking effect, when realizing no-load, also can work.
2, ratchet one and ratchet two are symmetrical arranged relative to the line of centers of ratchet by the utility model, the length of ratchet one and ratchet two is unequal, when tooth top position at ratchet of the operate portions one of ratchet one, the operate portions two of ratchet two can block ratchet, when tooth top position at ratchet of the operate portions two of ratchet two, the operate portions one of ratchet one can block ratchet, only have when the operate portions one of ratchet one and the operate portions two of ratchet two all do not block ratchet, ratchet is meeting rollback, thus this rollback angle can be reduced half, improve the hoisting speed of Lever Blocks, safety is high.
3, by the effect of torsion spring, ratchet can be made to contact all the time with ratchet, good operating stability.
4, by adopting spline joint between brake seat and major axis, the ability of transmitting torque is strong, directional tagging good.
5, can be positioned ratchet fast by jump ring, easy accessibility, location are fast.
Accompanying drawing explanation
Fig. 1 is the plan sketch of fast state in the utility model.
Fig. 2 is the plan sketch of lifting state in the utility model.
Fig. 3 is the schematic perspective view that the utility model removes state one after part.
Fig. 4 is the schematic perspective view that the utility model removes state two after part.
Fig. 5 is the exploded view that the utility model removes part.
In figure, 1, casing; 1a, draw-in groove; 2, ratchet; 2a, tooth root; 2b, tooth top; 3, commutate ratchet; 4, the second torsion spring; 5, cam; 6, handwheel; 7, the first torsion spring; 8, torsion spring seat; 9, setscrew nut; 10, spanner; 10a, snap fit; 11, major axis; 12, brake seat; 13, brake facing; 14, mount pin one; 15, ratchet one; 15a, installation portion one; 15b, mounting hole one; 15c, operate portions one; 16, adapter plate; 17, torsion spring one; 18, jump ring one; 19, ratchet two; 19a, installation portion two; 19b, mounting hole two; 19c, operate portions two; 20, jump ring two; 21, mount pin two; 22, torsion spring two.
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3, Figure 4, this no-load Lever Blocks, comprise casing 1, major axis 11 is provided with in casing 1, major axis 11 from the inside to the outside in turn sheathed brake seat 12, ratchet 2, commutation ratchet 3, cam 5, handwheel 6 and torsion spring seat 8, first torsion spring 7 is set between torsion spring seat 8 and handwheel 6 and carrys out pressing handwheel 6, between handwheel 6 and commutation ratchet 3, second torsion spring 4 is set and compresses the ratchet 3 that commutates, first torsion spring 7 is conter clockwise torsion spring, second torsion spring 4 is cw torsion spring, and the torsion of the first torsion spring 7 is greater than the torsion of the second torsion spring 4, adapter plate 16 is also provided with in casing 1, the ratchet 1 and ratchet 2 19 pulled are being installed, ratchet 1 and ratchet 2 19 are symmetrical arranged relative to the line of centers of ratchet 2, one end of ratchet 1 is installation portion one 15a, the other end of ratchet 1 is operate portions one 15c, installation portion one 15a offers rounded mounting hole one 15b, one end of ratchet 2 19 is installation portion two 19a, the other end of ratchet 2 19 is operate portions two 19c, installation portion two 19a offers rounded mounting hole two 19b, distance between the hole heart of operate portions one 15c and mounting hole one 15b is A, distance between the hole heart of operate portions two 19c and mounting hole two 19b is B, A is greater than B, the difference of A and B is the half of the ratchet length of ratchet 2, adopt this structure, when tooth top 2b position at ratchet 2 of operate portions one 15c of ratchet 1, operate portions two 19c of ratchet 2 19 can block ratchet 2, when tooth top 2b position at ratchet 2 of operate portions two 19c of ratchet 2 19, operate portions one 15c of ratchet 1 can block ratchet 2, only have when operate portions one 15c of ratchet 1 and operate portions two 19c of ratchet 2 19 does not block ratchet 2, ratchet 2 is meeting rollback, safety is high.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5, adapter plate 16 is fixed with mount pin 1, the mode that mount pin 1 is bolted is fixed on adapter plate 16; Mounting hole one 15b is set on mount pin 1, mount pin 1 is also arranged with torsion spring 1, one end of torsion spring 1 acts on mount pin 1, the other end of torsion spring 1 acts on installation portion one 15a of ratchet 1, adopt this structure, operate portions one 15c of ratchet 1 can be made to contact all the time with ratchet 2; Adapter plate 16 is fixed with mount pin 2 21, the mode that mount pin 2 21 is bolted is fixed on adapter plate 16; Mounting hole two 19b is set on mount pin 2 21, mount pin 2 21 is also arranged with torsion spring 2 22, one end of torsion spring 2 22 acts on mount pin 2 21, the other end of torsion spring 2 22 acts on installation portion two 19a of ratchet 2 19, adopt this structure, operate portions two 19c of ratchet 2 19 can be made to contact all the time with ratchet 2.
As shown in Fig. 3, Fig. 4, Fig. 5, the upper end of mount pin 1 is also provided with the jump ring 1 that can prevent installation portion one 15a of ratchet 1 from departing from it, the upper end of mount pin 1 offers the groove one of annular, can be fixed in the groove one of mount pin 1 fast by jump ring 1 by Circlip tongs; The lower surface of jump ring 1 contacts with installation portion one 15a of ratchet 1; The upper end of mount pin 2 21 is also provided with the jump ring 2 20 that can prevent installation portion two 19a of ratchet 2 19 from departing from it, and the upper end of mount pin 2 21 offers the groove two of annular, can be fixed in the groove people of mount pin 2 21 fast by jump ring 2 20 by Circlip tongs; The lower surface of jump ring 2 20 contacts with installation portion two 19a of ratchet 2 19.
As shown in Figure 1 and Figure 2, two sides post brake facing 13 admittedly with ratchet 2, wherein the brake facing 13 of a side recline commutation ratchet 3 end face, the brake facing 13 of another side reclines the end face of brake seat 12, adopt this structure, ratchet 2 can be stopped extremely by brake facing 13, Lever Blocks so just can being made when not having weight, can work.
As shown in Figure 1 and Figure 2, recessed spline on the perisporium of major axis 11, the internal perisporium projection female splines of brake seat 12, female splines is embedded in spline and forms clamping and be connected, and adopt this structure, brake seat 12 can drive major axis 11 to rotate.
As shown in Figure 1 and Figure 2, major axis 11 periphery is also arranged with spanner 10, and spanner 10 is sheathed on commutation ratchet 3 periphery, commutation ratchet 3 can be driven to rotate by spanner 10.
As shown in Figure 1 and Figure 2, spanner 10 and casing 1 form clamping and are connected, and curvedly in spanner 10 1 side ports establish snap fit 10a, the port of casing 1 are arranged draw-in groove 1a, snap fit 10a inlay card enters formation in draw-in groove 1a and is connected, by being embedded in the draw-in groove 1a on casing 1 by the snap fit 10a on spanner 10.
As shown in Figure 1 and Figure 2, in the fast lifting structure of lever hoist, there is setscrew nut 9 major axis 11 end by Screw assembly, and setscrew nut 9 leans torsion spring seat 8 and forms fastening assembling, torsion spring seat 8 and major axis 11 can be fixed by setscrew nut 9.
The principle of work of this no-load Lever Blocks is as follows, fast state: torsion spring seat 8 pushes down handwheel 6 by the first torsion spring 7, handwheel 6 is located by cam 5, when extracting handwheel 6, because the effect torsion spring seat 8 of the first torsion spring 7 can rotate clockwise, the effect commutation ratchet 3 of the second torsion spring 4 can rotate counterclockwise, and the ratchet 3 that commutates like this will depart from brake facing 13, so pawl-and-gearing 2 can not produce braking effect, quick rising or the decline of Lever Blocks so just can be realized, lifting state: torsion spring seat 8 pushes down handwheel 6 by the first torsion spring 7, handwheel 6 is located by cam 5, second torsion spring 4 tightens commutation ratchet 3, commutation ratchet 3 makes ratchet 2 stop extremely by brake facing 13, rotate handwheel 6, handwheel 6 drives commutation ratchet 3 to rotate, commutation ratchet 3 kills brake seat 12 by ratchet 2, commutation ratchet 3 drives ratchet 2 and brake seat 12 to rotate, brake seat 12 drives major axis 11 to rotate, along with the rotation of ratchet 2, the ratchet 2 contacted with ratchet 2 19 with ratchet 1 can produce contrary rotational force to ratchet 1 and ratchet 2 19, ratchet 1 and ratchet 2 19 are under this force, can exit from the tooth root 2a of ratchet 2 successively, realize the lifting of weight, after completing heavy lift, ratchet 2 rollback can be prevented by ratchet 1 and ratchet 2 19, realize its automatic brake.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (8)
1. a no-load Lever Blocks, comprise casing (1), major axis (11) is provided with in casing (1), described major axis (11) sheathed brake seat (12) in turn from the inside to the outside, ratchet (2), commutation ratchet (3), cam (5), handwheel (6) and torsion spring seat (8), it is characterized in that, first torsion spring (7) is set between described torsion spring seat (8) and handwheel (6) and carrys out pressing handwheel (6), between described handwheel (6) and commutation ratchet (3), the second torsion spring (4) is set and compresses the ratchet (3) that commutates, described first torsion spring (7) is conter clockwise torsion spring, second torsion spring (4) is cw torsion spring, and the torsion of the first torsion spring (7) is greater than the torsion of the second torsion spring (4), adapter plate (16) is also provided with in described casing (1), described adapter plate (16) is provided with ratchet one (15) and ratchet two (19), described ratchet one (15) and ratchet two (19) are symmetrical arranged relative to the line of centers of ratchet (2), one end of described ratchet one (15) is installation portion one (15a), the other end of ratchet one (15) is operate portions one (15c), described installation portion one (15a) offers rounded mounting hole one (15b), one end of described ratchet two (19) is installation portion two (19a), the other end of ratchet two (19) is operate portions two (19c), described installation portion two (19a) offers rounded mounting hole two (19b), distance between described operate portions one (15c) and the hole heart of mounting hole one (15b) is A, distance between described operate portions two (19c) and the hole heart of mounting hole two (19b) is B, described A is greater than B, the difference of described A and B is the half of the ratchet length of ratchet (2).
2. no-load Lever Blocks according to claim 1, it is characterized in that, described adapter plate (16) is fixed with mount pin one (14), described mounting hole one (15b) is set on mount pin one (14), described mount pin one (14) is also arranged with torsion spring one (17), one end of described torsion spring one (17) acts on mount pin one (14), and the other end of torsion spring one (17) acts on the installation portion one (15a) of ratchet one (15); Described adapter plate (16) is fixed with mount pin two (21), described mounting hole two (19b) is set on mount pin two (21), described mount pin two (21) is also arranged with torsion spring two (22), one end of described torsion spring two (22) acts on mount pin two (21), and the other end of torsion spring two (22) acts on the installation portion two (19a) of ratchet two (19).
3. no-load Lever Blocks according to claim 2, it is characterized in that, the upper end of described mount pin one (14) is also provided with the jump ring one (18) that can prevent the installation portion one (15a) of ratchet one (15) from departing from it, and the lower surface of described jump ring one (18) contacts with the installation portion one (15a) of ratchet one (15); The upper end of described mount pin two (21) is also provided with the jump ring two (20) that can prevent the installation portion two (19a) of ratchet two (19) from departing from it, and the lower surface of described jump ring two (20) contacts with the installation portion two (19a) of ratchet two (19).
4. no-load Lever Blocks according to claim 1, it is characterized in that, described ratchet (2) two sides post brake facing (13) admittedly, wherein the brake facing (13) of a side reclines the end face of commutation ratchet (3), and the brake facing (13) of another side reclines the end face of brake seat (12).
5. no-load Lever Blocks according to claim 1, it is characterized in that, recessed spline on the perisporium of described major axis (11), the internal perisporium projection female splines of described brake seat (12), described female splines is embedded in spline and forms clamping and be connected.
6. no-load Lever Blocks according to claim 1, is characterized in that, described major axis (11) periphery is also arranged with spanner (10), and described spanner (10) is sheathed on commutation ratchet (3) periphery.
7. no-load Lever Blocks according to claim 6, it is characterized in that, described spanner (10) and casing (1) form clamping and are connected, curvedly in described spanner (10) side ports establish snap fit (10a), the port of described casing (1) is arranged draw-in groove (1a), described snap fit (10a) inlay card enters formation in draw-in groove (1a) and is connected.
8. no-load Lever Blocks according to claim 1, it is characterized in that, there is setscrew nut (9) described major axis (11) end by Screw assembly, and described setscrew nut (9) leans torsion spring seat (8) and forms fastening assembling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476145.4U CN204038933U (en) | 2014-08-22 | 2014-08-22 | A kind of no-load Lever Blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420476145.4U CN204038933U (en) | 2014-08-22 | 2014-08-22 | A kind of no-load Lever Blocks |
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| Publication Number | Publication Date |
|---|---|
| CN204038933U true CN204038933U (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420476145.4U Expired - Fee Related CN204038933U (en) | 2014-08-22 | 2014-08-22 | A kind of no-load Lever Blocks |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084240A (en) * | 2015-09-01 | 2015-11-25 | 浙江冠林机械有限公司 | Outer cover structure of lever block |
| CN105129642A (en) * | 2015-09-01 | 2015-12-09 | 浙江冠林机械有限公司 | Novel lever hoist structure |
| CN105347221A (en) * | 2015-11-24 | 2016-02-24 | 浙江维大茵特起重设备有限公司 | Waterproof lever block |
| CN106006437A (en) * | 2016-08-11 | 2016-10-12 | 杭州维多利机械有限公司 | Lever hoist capable of quickly ascending and descending in no-load state |
| CN106629533A (en) * | 2016-12-20 | 2017-05-10 | 厦门靖东机械有限公司 | Safe anti-falling device of lifting handcart |
| CN107161863A (en) * | 2017-06-23 | 2017-09-15 | 河南省中原凌空起重设备有限公司 | Locking control device of self for crane gear |
-
2014
- 2014-08-22 CN CN201420476145.4U patent/CN204038933U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105084240A (en) * | 2015-09-01 | 2015-11-25 | 浙江冠林机械有限公司 | Outer cover structure of lever block |
| CN105129642A (en) * | 2015-09-01 | 2015-12-09 | 浙江冠林机械有限公司 | Novel lever hoist structure |
| CN105347221A (en) * | 2015-11-24 | 2016-02-24 | 浙江维大茵特起重设备有限公司 | Waterproof lever block |
| CN106006437A (en) * | 2016-08-11 | 2016-10-12 | 杭州维多利机械有限公司 | Lever hoist capable of quickly ascending and descending in no-load state |
| CN106006437B (en) * | 2016-08-11 | 2018-09-28 | 杭州维多利机械有限公司 | When a kind of no-load can fast lifting Lever Blocks |
| CN106629533A (en) * | 2016-12-20 | 2017-05-10 | 厦门靖东机械有限公司 | Safe anti-falling device of lifting handcart |
| CN107161863A (en) * | 2017-06-23 | 2017-09-15 | 河南省中原凌空起重设备有限公司 | Locking control device of self for crane gear |
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