CN106006437A - Lever hoist capable of quickly ascending and descending in no-load state - Google Patents
Lever hoist capable of quickly ascending and descending in no-load state Download PDFInfo
- Publication number
- CN106006437A CN106006437A CN201610651263.8A CN201610651263A CN106006437A CN 106006437 A CN106006437 A CN 106006437A CN 201610651263 A CN201610651263 A CN 201610651263A CN 106006437 A CN106006437 A CN 106006437A
- Authority
- CN
- China
- Prior art keywords
- assembly
- tooth
- major axis
- wallboard assembly
- chain hoist
- 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
- 230000001174 ascending effect Effects 0.000 title abstract 3
- 210000003127 knee Anatomy 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 14
- 238000000429 assembly Methods 0.000 claims description 14
- 210000003195 fascia Anatomy 0.000 claims description 9
- 238000000926 separation method Methods 0.000 claims description 6
- 235000008331 Pinus X rigitaeda Nutrition 0.000 claims description 3
- 235000011613 Pinus brutia Nutrition 0.000 claims description 3
- 241000018646 Pinus brutia Species 0.000 claims description 3
- 238000007665 sagging Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 240000009087 Crescentia cujete Species 0.000 description 2
- 235000005983 Crescentia cujete Nutrition 0.000 description 2
- 235000009797 Lagenaria vulgaris Nutrition 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D3/00—Portable or mobile lifting or hauling appliances
- B66D3/12—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable
- B66D3/16—Chain or like hand-operated tackles with or without power transmission gearing between operating member and lifting rope, chain or cable operated by an endless chain passing over a pulley or a sprocket
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/04—Driving gear manually operated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Conveying And Assembling Of Building Elements In Situ (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a lever hoist capable of quickly ascending and descending in the no-load state. The lever hoist comprises a left wallboard assembly and a right wallboard assembly which are arranged opposite to each other in a spaced mode. An upper hoisting hook assembly is erected between the left wallboard assembly and the right wallboard assembly. A hoisting chain wheel is rotationally erected between the left wallboard assembly and the right wallboard assembly, and a six-tooth long shaft penetrates through a shaft hole of the hoisting chain wheel. A counter bore is formed in the end, close to the tooth portion of the six-tooth long shaft, of the hoisting chain wheel. The inner diameter of the counter bore is larger than the outer diameter of the tooth portion of the six-tooth long shaft. The depth of the counter bore is larger than the length of the tooth portion of the six-tooth long shaft. By means of a pulling hand wheel, the six-tooth long shaft moves outwards by a certain distance, the tooth portion indents into the counter bore, so the tooth portion of the six-tooth long shaft is isolated from the transmission relation with the hoisting chain wheel, and the hoisting chain wheel can freely rotate. Quick ascending and descending can be achieved by pulling a hoisting chain, efficiency is high, and time and labor are saved.
Description
Technical field
The present invention relates to Lever Blocks field, can the Lever Blocks of fast lifting when particularly relating to a kind of no-load.
Background technology
Lever Blocks is that a use is simple, Manual hoisting instrument easy to carry.Lever Blocks can carry out promoting,
Draw, decline, the operation such as calibration.Lifting capacity is usually no more than 50T, be widely used in shipbuilding, electric power, transport, build, ore deposit
The equipment of the industry such as mountain, 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；Award
Power notification number: CN 201343409Y].This Lever Blocks, is mainly to include with lower component: major axis, splined hole gear, hang oneself
Hook assembly, left and right wall assembly, guide wheel, gear carrier bar, ratchet, brake, ratchet, wearing piece, cam, shell, hoisting chain, under hang
Hook assembly, only lock ring assembly, locking nut, sprocket shaft composition, it is characterised in that: hook assembly is by hook beam and left and right wall group
Part is fixed, and left and right wall assembly is fixed with shell by support bar, and lower hook assembly is fixed on one end of hoisting chain, sprocket wheel
The side of axle arranges guide wheel, and left and right, the bottom wall assembly of sprocket shaft arranges gear carrier bar, and the right-hand member of major axis is sequentially arranged with ratchet, spine
Wheel right-hand member is connected with handle, and taper knob is in the outside of commutation ratchet, and its left and right two ends connect with handwheel and ratchet case activity respectively
Connecing, brake is contained in inside spanner, and the brake seat of brake is installed wearing piece, and ratchet case is arranged on the right side of frame and puts down
Face, chain guides, sprocket shaft are arranged on the centre of frame, and the crane rotated with arrestment mechanism and commutation ratchet composition one pair
Structure.
Although the calabash rapid operation disclosed in this patent, but, this calabash uses load brake, can not be quick time unloaded
Elevating chain, inefficiency；When using pawl-and-gearing to prevent from reversing, the angle of ratchet rollback is relatively big, promotes speed relatively
Slowly, there is potential safety hazard, therefore, it is necessary for designing a kind of no-load Lever Blocks.
Summary of the invention
When it is an object of the invention to provide a kind of no-load can the Lever Blocks of fast lifting, solve existing Lever Blocks no-load
Time the speed of service identical with speed of service during heavy duty, the problem that do not has special loose running mode.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
During a kind of no-load of the present invention can the Lever Blocks of fast lifting, including being spaced the left wallboard assembly being oppositely arranged and right wallboard
Assembly；Set up between described left wallboard assembly and right wallboard assembly and have hook assembly；Described left wallboard assembly and right wallboard group
Set up rotationally between part and have chain hoist wheel；The hoisting-chain that down either side is sagging to the left and right it is wound with on described chain hoist wheel
Bar, in the described hoisting chain left and right sides, wherein one end of side connects as load end and has a lower hook housing assembly, and opposite side
One end connects as pine end last-of-chain ring；Six tooth major axis it are equipped with in the axis hole of described chain hoist wheel；Described chain hoist wheel is close
One end of the teeth portion of described six tooth major axis offers counterbore；The internal diameter of described counterbore is more than the teeth portion external diameter of described six tooth major axis；
The degree of depth of described counterbore is more than the teeth portion length of described six tooth major axis；
Described right wallboard assembly is provided with Side fascia, described Side fascia and described right wallboard group away from described left wallboard assembly side
Setting up rotationally between part and have two sheet tooth minor axis component, two described tooth minor axis component are relative to described six tooth major axis
Centrage is symmetrical arranged；Described tooth minor axis component one end is engaged with the teeth portion of described six tooth major axis, the other end be arranged on institute
State the splined hole gear engagement on chain hoist wheel；Described splined hole geared sleeve is located at one end of described chain hoist wheel, passes through spline
Couple；
The most sheathed brake assemblies and wrench assembly is started from described left wallboard assembly on described six tooth major axis；Described
Knee wall board component it is provided with outside brake assemblies and wrench assembly；The threaded portion of described six tooth major axis passes described support wallboard
Assembly, and it is fixed with handwheel by nut；Being provided with separation lock dog on described left wallboard assembly, described separation lock dog includes connecting
Portion, hands pull portion and press keeping section；Described connecting portion, with manhole, is connected on described left wallboard assembly by self-locking nut；
Being arranged with torque spring on described self-locking nut, one of them termination of described torque spring is fixed, and another termination acts on
Described hands is pulled in portion, makes described press keeping section by described knee wall board component pressure holding to the position contacted with described left wallboard assembly.
Further, between described left wallboard assembly and right wallboard assembly, erection has two guide wheels rotationally；Two institutes
State guide wheel and lay respectively at the described chain hoist wheel left and right sides, and about the centrage centrosymmetry of described chain hoist wheel.
Further, described brake assemblies includes setting gradually from the inside to the outside brake seat, the first friction plate, spine
Wheel, the second friction plate and brake disc.
Further, described six tooth major axis are multidiameter, and the shaft section diameter coordinated with described chain hoist wheel is more than and institute
Stating the shaft section diameter that brake seat coordinates, step is stuck in described brake seat one end.
Further, the axis hole of described chain hoist wheel and described six tooth major axis are matched in clearance.
Compared with prior art, the Advantageous Effects of the present invention is as follows:
The present invention is by offering counterbore, the system that knee wall board component wraps at chain hoist wheel near teeth portion one end of six tooth major axis
Dynamic assembly and wrench assembly separate with left wallboard assembly, and the other end of six tooth major axis is fixed with handwheel by nut, passes through
Six tooth major axis are moved out a segment distance by drawing handwheel, make teeth portion be trapped in counterbore, simultaneously brake assemblies, wrench assembly and
Knee wall board component is also separated a distance with left wallboard assembly, and the teeth portion of such six tooth major axis and chain hoist wheel depart from transmission and close
System, chain hoist wheel can be freely rotatable, and by pulling hoisting chain just can realize fast lifting, efficiency is high, time saving and energy saving.
Accompanying drawing explanation
The invention will be further described in explanation below in conjunction with the accompanying drawings.
Can the Lever Blocks structural representation of fast lifting when Fig. 1 is no-load of the present invention；
Fig. 2 is the front view after the present invention removes Side fascia；
Fig. 3 be in Fig. 2 A-A to sectional view；
Description of reference numerals: 1, left wallboard assembly；2, right wallboard assembly；3, hook assembly；4, chain hoist wheel；401, counterbore；
5, hoisting chain；6, lower hook housing assembly；7, last-of-chain ring；8, six tooth major axis；801, teeth portion；802, threaded portion；9, Side fascia；10、
Sheet tooth minor axis component；11, splined hole gear；12, brake assemblies；1201, brake；1202, the first friction plate；1203, ratchet；
1204, the second friction plate；1205, brake disc；13, wrench assembly；14, knee wall board component；15, handwheel；16, lock dog is separated；
1601, connecting portion；1602, hands pulls portion；1603, press keeping section；17, self-locking nut；18, torque spring；19, guide wheel.
Detailed description of the invention
As Figure 1-3, during a kind of no-load can the Lever Blocks of fast lifting, including being spaced the left wallboard group being oppositely arranged
Part 1 and right wallboard assembly 2；Set up between described left wallboard assembly 1 and right wallboard assembly 2 and have hook assembly 3, be used for being hung in height
The fixing point at place carrys out lifting heavy goods；Set up rotationally between described left wallboard assembly 1 and right wallboard assembly 2 and have chain hoist wheel 4.
Be wound with the sagging hoisting chain of down either side to the left and right 5 on described chain hoist wheel 4, in described hoisting chain 5 left and right sides its
One end of middle side connects as load end lower hook housing assembly 6, along with the rotation of chain hoist wheel, drives lower hook housing assembly to hook
Weight moves upward；And there is last-of-chain ring 7 one end of opposite side as pine end connection, deviate from when last-of-chain ring prevents hoisting chain from falling after rise
Chain hoist wheel.Being equipped with six tooth major axis 8 in the axis hole of described chain hoist wheel 4, six tooth major axis are that one end has teeth portion, and the other end has
There is the major axis of threaded portion.Described chain hoist wheel 4 offers counterbore 401 near one end of the teeth portion 801 of described six tooth major axis 8；Institute
State internal diameter teeth portion 801 external diameter more than described six tooth major axis 8 of counterbore 401；The degree of depth of described counterbore 401 is long more than described six teeth
Teeth portion 801 length of axle 8, six tooth major axis can pull out, and makes teeth portion enter in the middle of counterbore, not with sheet tooth minor axis component
One end is meshed.
Described right wallboard assembly 2 is provided with Side fascia 9 away from described left wallboard assembly 1 side and is clasped by right wallboard assembly,
And be bolted.Set up rotationally between described Side fascia 9 and described right wallboard assembly 2 and have two sheet tooth minor axis component
10, sheet tooth minor axis component is the short axle being erected between Side fascia and right wallboard assembly, is respectively fixed at two ends with two gears；Two
Individual described tooth minor axis component 10 is symmetrical arranged relative to the centrage of described six tooth major axis 8；Described tooth minor axis component 10 1
End engages with the teeth portion 801 of described six tooth major axis 8, and the other end is nibbled with the splined hole gear 11 being arranged on described chain hoist wheel 4
Close；Described splined hole gear 11 is set in one end of described chain hoist wheel 4, and this end side face of chain hoist wheel is provided with and spline
The spline that hole gear matches, realizes spline connection by splined hole geared sleeve at this end of chain hoist wheel；During motion, wrench assembly
Rotational movement six tooth major axis rotate, by teeth portion and sheet tooth minor axis component transmission, drive splined hole pinion rotation, then
Drive chain hoist wheel rotates, and drives hoisting chain lifting weight.
The most sheathed brake assemblies 12 and spanner is started from described left wallboard assembly 1 on described six tooth major axis 8
Assembly 13；It is provided with knee wall board component 14 outside described brake assemblies 12 and wrench assembly 13, will by knee wall board component
Brake assemblies and wrench assembly wrap, and play the effect of protection internal structure.The threaded portion 802 of described six tooth major axis 8 passes
Described knee wall board component 14, and it is fixed with handwheel 15 by nut, outwards pulled out by hand-held handwheel, drive six tooth major axis, system
Dynamic assembly, wrench assembly move out together with knee wall board component, make the teeth portion of six tooth major axis enter in counterbore, not with sheet
Tooth minor axis component engages, and makes sheet tooth minor axis component, splined hole gear and chain hoist wheel not by control for brake, can pass through to have pulled
Heavy chain bar realizes no-load fast lifting.Being provided with separation lock dog 16 on described left wallboard assembly 1, described separation lock dog 16 includes even
Meet portion 1601, hands pulls portion 1602 and press keeping section 1603；Described connecting portion 1601, with manhole, is connected by self-locking nut 17
On described left wallboard assembly 1；Torque spring 18, one of them of described torque spring 18 it is arranged with on described self-locking nut 17
Termination is fixed, and another termination acts on described hands and pulls in portion 1602, pulls one, portion revolving force to hands, makes press keeping section rotate to prop up
On buttress board component, by the pressure holding of described knee wall board component 14 to the position contacted with described left wallboard assembly 1, need handwheel
When extracting together with six tooth major axis, brake assemblies, wrench assembly and knee wall board component, just with hands, the hands portion of pulling is dialled round about
Dynamic, make press keeping section decontrol knee wall board component.
Specifically, between described left wallboard assembly 1 and right wallboard assembly 2, erection has two guide wheels 19 rotationally；Two
Described guide wheel 19 lays respectively at described chain hoist wheel 4 left and right sides, and about the centrage centrosymmetry of described chain hoist wheel 4；
The present embodiment is that two guide wheels shift to install up and down, is wound on chain hoist wheel by hoisting chain, prevents abjection.
During in order to six tooth major axis are extracted, it is possible to exactly by brake assemblies, wrench assembly and knee wall board component in the lump
Take out of, be multidiameter by described six tooth major axis 8, owing to described brake assemblies 12 includes the brake seat that sets gradually from the inside to the outside
1201, the first friction plate 1202, ratchet the 1203, second friction plate 1204 and brake disc 1205, with described lifting on six tooth major axis
The shaft section diameter that sprocket wheel 4 coordinates is more than the shaft section diameter coordinated with described brake seat 1201, and step is stuck in described brake seat
1201 one end, when extracting handwheel, it is ensured that brake seat blocks at the step of six tooth major axis being pulled outwardly, and drives braking group simultaneously
Part, wrench assembly move out together with knee wall board component.
The axis hole of described chain hoist wheel 4 and described six tooth major axis 8 are matched in clearance, make the axle of six tooth major axis and chain hoist wheel
Hole does not rub, and can extract.
Embodiment described above is only that the optimal way to the present invention is described, and not carries out the scope of the present invention
Limiting, on the premise of designing spirit without departing from the present invention, technical scheme is made by those of ordinary skill in the art
Various deformation and improvement, all should fall in the protection domain that claims of the present invention determines.
Claims (5)
1. can the Lever Blocks of fast lifting during a no-load, it is characterised in that: include being spaced the left wallboard assembly being oppositely arranged
And right wallboard assembly (2) (1)；Set up between described left wallboard assembly (1) and right wallboard assembly (2) and have hook assembly (3)；Institute
State to set up rotationally between left wallboard assembly (1) and right wallboard assembly (2) and have chain hoist wheel (4)；On described chain hoist wheel (4)
Being wound with the sagging hoisting chain of down either side to the left and right (5), in described hoisting chain (5) left and right sides one end of wherein side
Connect as load end and have lower hook housing assembly (6), and there is last-of-chain ring (7) one end of opposite side as pine end connection；Described lifting
Six tooth major axis (8) it are equipped with in the axis hole of sprocket wheel (4)；Described chain hoist wheel (4) is near the teeth portion of described six tooth major axis (8)
(801) one end offers counterbore (401)；The internal diameter of described counterbore (401) is more than the teeth portion (801) of described six tooth major axis (8)
External diameter；The degree of depth of described counterbore (401) is more than teeth portion (801) length of described six tooth major axis (8)；
Described right wallboard assembly (2) is provided with Side fascia (9) away from described left wallboard assembly (1) side, described Side fascia (9) with
Set up rotationally between described right wallboard assembly (2) and have two sheets tooth minor axis component (10), two described tooth minor axis component
(10) it is symmetrical arranged relative to the centrage of described six tooth major axis (8)；Described tooth minor axis component (10) one end and described six teeth
Teeth portion (801) engagement of major axis (8), the other end engages with the splined hole gear (11) being arranged on described chain hoist wheel (4)；Institute
State splined hole gear (11) and be set in one end of described chain hoist wheel (4), coupled by spline；
Start the most sheathed brake assemblies (12) from described left wallboard assembly (1) on described six tooth major axis (8) and pull
Hands assembly (13)；Described brake assemblies (12) and wrench assembly (13) outside are provided with knee wall board component (14)；Described six teeth
The threaded portion (802) of major axis (8) passes described knee wall board component (14), and is fixed with handwheel (15) by nut；A described left side
Being provided with separation lock dog (16) on wall panel assembly (1), described separation lock dog (16) includes that connecting portion (1601), hands pull portion (1602)
With press keeping section (1603)；Described connecting portion (1601), with manhole, is connected to described left wallboard by self-locking nut (17)
On assembly (1)；Torque spring (18), one of them termination of described torque spring (18) it is arranged with on described self-locking nut (17)
Fixing, another termination acts on described hands and pulls in portion (1602), makes described press keeping section (1603) by described knee wall board component
(14) pressure holding is to the position contacted with described left wallboard assembly (1).
Can the Lever Blocks of fast lifting during no-load the most according to claim 1, it is characterised in that: described left wallboard assembly
(1) and set up rotationally between right wallboard assembly (2) and have two guide wheels (19)；Two described guide wheels (19) lay respectively at described
Chain hoist wheel (4) left and right sides, and about the centrage centrosymmetry of described chain hoist wheel (4).
Can the Lever Blocks of fast lifting during no-load the most according to claim 1, it is characterised in that: described brake assemblies
(12) brake seat (1201) that includes setting gradually from the inside to the outside, the first friction plate (1202), ratchet (1203), the second friction
Sheet (1204) and brake disc (1205).
Can the Lever Blocks of fast lifting during no-load the most according to claim 3, it is characterised in that: described six tooth major axis
(8) being multidiameter, the shaft section diameter coordinated with described chain hoist wheel (4) is more than the shaft part coordinated with described brake seat (1201)
Diameter, step is stuck in described brake seat (1201) one end.
Can the Lever Blocks of fast lifting during no-load the most according to claim 1, it is characterised in that: described chain hoist wheel
(4) axis hole and described six tooth major axis (8) are matched in clearance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651263.8A CN106006437B (en) | 2016-08-11 | 2016-08-11 | When a kind of no-load can fast lifting Lever Blocks |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610651263.8A CN106006437B (en) | 2016-08-11 | 2016-08-11 | When a kind of no-load can fast lifting Lever Blocks |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106006437A true CN106006437A (en) | 2016-10-12 |
| CN106006437B CN106006437B (en) | 2018-09-28 |
Family
ID=57133934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610651263.8A Active CN106006437B (en) | 2016-08-11 | 2016-08-11 | When a kind of no-load can fast lifting Lever Blocks |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106006437B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976812A (en) * | 2017-04-11 | 2017-07-25 | 陈树忠 | A kind of chain block is unloaded, band carries lifting speed mapping device |
| CN111332975A (en) * | 2020-04-02 | 2020-06-26 | 杭州契卡拉起重机械有限公司 | Portable hoist convenient to quick travel control |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201647902U (en) * | 2009-11-06 | 2010-11-24 | 张龙 | Lever hoist lifting hook |
| CN203754334U (en) * | 2014-04-01 | 2014-08-06 | 浙江维大茵特起重设备有限公司 | Quick lifting structure of hand hoist |
| CN204038933U (en) * | 2014-08-22 | 2014-12-24 | 浙江维大茵特起重设备有限公司 | A kind of no-load Lever Blocks |
| CN105035982A (en) * | 2015-09-01 | 2015-11-11 | 浙江冠林机械有限公司 | Lever block |
| CN105084242A (en) * | 2015-09-01 | 2015-11-25 | 浙江冠林机械有限公司 | Clutch of lever hoist |
| CN205892607U (en) * | 2016-08-11 | 2017-01-18 | 杭州维多利机械有限公司 | Lever block that can go up and down fast during no -load |
-
2016
- 2016-08-11 CN CN201610651263.8A patent/CN106006437B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201647902U (en) * | 2009-11-06 | 2010-11-24 | 张龙 | Lever hoist lifting hook |
| CN203754334U (en) * | 2014-04-01 | 2014-08-06 | 浙江维大茵特起重设备有限公司 | Quick lifting structure of hand hoist |
| CN204038933U (en) * | 2014-08-22 | 2014-12-24 | 浙江维大茵特起重设备有限公司 | A kind of no-load Lever Blocks |
| CN105035982A (en) * | 2015-09-01 | 2015-11-11 | 浙江冠林机械有限公司 | Lever block |
| CN105084242A (en) * | 2015-09-01 | 2015-11-25 | 浙江冠林机械有限公司 | Clutch of lever hoist |
| CN205892607U (en) * | 2016-08-11 | 2017-01-18 | 杭州维多利机械有限公司 | Lever block that can go up and down fast during no -load |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106976812A (en) * | 2017-04-11 | 2017-07-25 | 陈树忠 | A kind of chain block is unloaded, band carries lifting speed mapping device |
| CN106976812B (en) * | 2017-04-11 | 2022-08-09 | 陈树忠 | No-load and on-load lifting speed changing mechanism of chain block |
| CN111332975A (en) * | 2020-04-02 | 2020-06-26 | 杭州契卡拉起重机械有限公司 | Portable hoist convenient to quick travel control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106006437B (en) | 2018-09-28 |
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