CN106629533A - Safe anti-falling device of lifting handcart - Google Patents
Safe anti-falling device of lifting handcart Download PDFInfo
- Publication number
- CN106629533A CN106629533A CN201611183089.5A CN201611183089A CN106629533A CN 106629533 A CN106629533 A CN 106629533A CN 201611183089 A CN201611183089 A CN 201611183089A CN 106629533 A CN106629533 A CN 106629533A
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- CN
- China
- Prior art keywords
- falling device
- ratchet
- safety anti
- driving shaft
- falling
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- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Emergency Lowering Means (AREA)
Abstract
The invention relates to a safe anti-falling device of a lifting handcart. The safe anti-falling device of the lifting handcart comprises a reduction gear box. The safe anti-falling device of the lifting handcart is characterized in that a reduction mechanism is installed on the inner side of the reduction gear box, and a storing cavity is installed on the outer side of the reduction gear box; and a driving shaft, a ratchet wheel, a pawl, friction plates, a spiral compression device and a safe anti-falling device body are installed in the storing cavity, wherein the pawl is movably installed on the gear box, the ratchet wheel is rotatably installed on the driving shaft, the friction plates are installed on the two sides of the ratchet wheel in the axial direction, one end of the driving shaft is connected with the reduction mechanism, the other end of the driving shaft is connected with the spiral compression device, the safe anti-falling device body is installed between the spiral compression device and the outer side friction plates, and the safe anti-falling device body is fixedly connected with the spiral compression device. By adoption of the structure, the safe anti-falling device can provide overload protection for the lifting handcart or provide safe protection when the inner friction plates loss efficacy.
Description
Technical field
The present invention relates to a kind of lifting handcart, more particularly to a kind of safety anti-falling device of lifting handcart.
Background technology
Traditional lifting handcart, as disclosed by Chinese invention patent 200720154117.0, because it is anti-to be not provided with safety
, when lifting handcart load is excessive, when internal friction disc wear fails or operates improper, often there is weight quickly in fall device
Fall, cause damage, severe patient also to pound staff, cause industrial accident.
Therefore, traditional lifting handcart is further improved, a kind of safe anti-falling of lifting handcart that this patent is proposed
Device is proposed exactly to solve problem above.
The content of the invention
It is an object of the invention to provide a kind of safety anti-falling device of lifting handcart, can provide overload guarantor to lift handcart
Shield, or provide safeguard protection during friction plate disabler internally.
The technical scheme for realizing the object of the invention is:
A kind of safety anti-falling device of lifting handcart, including reduction gear box, are provided with reducing gear, outside on the inside of the gear-box
Accommodating cavity is provided with, driving shaft, ratchet, ratchet, friction plate, spiral clamping device, safety anti-falling device are provided with the accommodating cavity, its
In, ratchet is movably arranged on gear-box, and ratchet is rotatably arranged on driving shaft, and friction plate is vertically located at the two of ratchet
Side, one end of driving shaft is connected with reducing gear, other end connection spiral clamping device, and spiral clamping device and outboard friction
Safety anti-falling device is set between piece, and safety anti-falling device is fixedly connected with spiral clamping device.
Preferably, described safety anti-falling device includes catching device and gear shrouding, and described catching device includes two disks
And between two disks circular array distribution extension spring and claw, and one end of claw be rotatablely arranged at two disks it
Between, the other end is connected with extension spring, and the other end of extension spring is fixed between two disks.
Preferably, described spiral clamping device includes termination point casing, and termination point casing is fixedly connected with safety anti-falling device, and interior
Side reclines safety anti-falling device, and the fixed handle in outside is provided with locking stop nut on the outside of handle, and the inside of termination point casing is provided with
Torsion spring, located at the end face between termination point casing and safety anti-falling device, the other end is located at driving shaft for one end of the torsion spring.
After using such scheme, when needing rival car to carry out lifting operations, side clockwise is applied to spiral clamping device
To turning moment so that spiral clamping device drive safety anti-falling device pressing friction piece, so, in the effect of frictional force
Under, with driving shaft unitary rotation, after weight reaches lifting height, the ratchet contact on ratchet and ratchet is prevented actively ratchet
Axle is turned round, and makes weight that positioning is produced after predetermined altitude is reached；When needing rival car to carry out step-down operation, spiral compression is filled
Put the anticlockwise turning moment of applying so that spiral clamping device drives safety anti-falling device to leave friction plate, so, rubs
Wipe power to be reduced or eliminated, ratchet is no longer rotated under the contact effect of ratchet with driving shaft, and handcart steadily declines；And work as handcart
In rising or position fixing process, if as friction disc wear failure or weight excess load, the torque that weight is produced is beyond friction
Torque, when causing driving shaft to reverse, safety anti-falling device is had an effect, weight can be made to avoid from high falling damage product or
Injure staff by a crashing object.
Description of the drawings
Fig. 1 is the application product configuration diagram of the present invention.
Fig. 2 is the Structure explosion diagram of the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 2.
Fig. 4 is the catching device internal structure stereoscopic-state diagram of the present invention under normal condition.
Fig. 5 is the catching device internal structure flat state diagram of the present invention.
Fig. 6 is the catching device internal structure stereoscopic-state diagram of the present invention under stopping.
Fig. 7 is the catching device internal structure flat state diagram of the present invention under stopping.
Fig. 8 is the exploded perspective figure of termination point casing and torsion spring.
Fig. 9 is the end face diagram after termination point casing is assembled with torsion spring.
Figure 10 is the internal structure relational view of handcart catching device and gear shrouding under propradation.
Figure 11 is the reverse diagram of internal structure relation of the handcart between propradation bottom ratchet wheel and ratchet.
Figure 12 is the internal structure relational view of catching device and gear shrouding under stopping.
Figure 13 is the reverse diagram of the internal structure relation between stopping bottom ratchet wheel and ratchet.
Figure 14 is handcart under propradation, handle direction of rotation schematic diagram.
Figure 15 is handcart under propradation, the cross-sectional schematic of agent structure of the present invention.
Figure 16 is the partial enlarged drawing of Figure 15.
Figure 17 is handcart under decline state, handle direction of rotation schematic diagram.
Figure 18 is handcart under decline state, the cross-sectional schematic of agent structure of the present invention.
Figure 19 is the partial enlarged drawing of Figure 18.
Figure 20 is reducing gear diagram.
In figure,
The axle sleeve 40 of 3 driving shaft of gear-box 1 reducing gear, 2 accommodating cavity 41
The ratchet 42 of 401 smooth circumferential face of circular base plate, 402 slit 411
The spiral clamping device 45 of 43 friction plate of ratchet 44
The slit 4511 of 46 termination point casing of safety anti-falling device 451 locks hole 4512
The locking torsion spring 49 of stop nut 48 of handle 47
The gear shrouding 462 of 491 torsion spring pin of torsion spring pin, 492 catching device 461
The gear ring 4622 of cover plate 4621
The claw 4613 of two disks, 4611 extension spring 4612
First locks hole 4,512 second locks hole 471 the 3rd and locks hole 4613.
Specific embodiment
Below with reference to accompanying drawing, technical scheme and beneficial effect are described in detail.
As shown in Fig. 1 to Fig. 3 and Figure 20, a kind of safety anti-falling device of lifting handcart, including reduction gear box 1, the tooth
The inner side of roller box 1 is provided with reducing gear 2, and outside is provided with accommodating cavity 3.Driving shaft 41, ratchet 42, ratchet are provided with the accommodating cavity 3
43 and in the ratchet 42 outside friction plate 44, wherein ratchet 43 is movably arranged on gear-box 1, and ratchet 42 is rotationally
On driving shaft 41.Specifically, driving shaft 41 is provided with axle sleeve 40 near one end of reduction box 1, the axle sleeve 40 and driving shaft 41
Spiral is fixed, and the axle sleeve 40 has circular base plate 401 and smooth periphery 402, and the friction plate 44 of ratchet 42 and two is arranged
In the smooth circumferential face 402 of axle sleeve 40, and circular base plate 401 is sequentially resisted against, the concretely graphite brake block of friction plate 44.It is main
One end of moving axis 41 is connected with reducing gear 2, other end connection spiral clamping device 45, and spiral clamping device 45 rubs with outside
Safety anti-falling device 46 is additionally provided between pad 44, safety anti-falling device 46 is fixedly connected with spiral clamping device 45.
As shown in Figures 4 to 7, as a kind of better embodiment, safety anti-falling device 46 includes catching device 461 and gear shrouding
462, wherein, the contact outboard friction piece 44 of catching device 461 simultaneously can the relative helical rotation of driving shaft 41.Specifically, catching device 461 is wrapped
The extension spring 4612 of circular array distribution and claw 4613 containing two disks 4611 and between two disks 4611, and claw 4613
One end is rotatablely arranged between two disks 4611, and the other end is connected with extension spring 4612, and the other end of extension spring 4612 is fixed on
Between two disks 4611.Gear shrouding 462 includes cover plate 4621 and gear ring 4622, and herein, cover plate 4621 and gear ring 4622 can be
It is integrally formed, is alternatively fixedly connected again after split shaping, wherein, the inner side of gear ring 4622 is provided with the ratchet being distributed in a ring,
Cover plate 4621 is covered on the outside of accommodating cavity 3 so that gear ring 4622 is placed exactly between the periphery of catching device 461 and holding rationally
Gap, not affect catching device 461, normally rotation is advisable this gap.
As shown in Fig. 8 and Fig. 9 and Figure 15 to Figure 20, spiral clamping device 45 includes termination point casing 451, termination point casing 451 and peace
The cover plate 4621 of full anti-fall device 46 is fixedly connected, and the cover plate 4621 that reclines on the inside of it, the fixed handle 47 in outside, outside handle 47
Side is provided with locking stop nut 48.Specifically, the inner side end of termination point casing 451 is provided with slit 4511 and first locks hole 4512,
This slit 4511 can be one or more, be respectively equipped with handle 47 and catching device 461 and lock hole 4512 corresponding the with first
Two lock hole 471 and the 3rd locks hole 4613.Torsion spring 49 is provided with inside termination point casing 451, the two ends of the torsion spring 49 have respectively to be turned round
Spring pin 491 and torsion spring pin 492, handle 47, termination point casing 451 and catching device 461 by screw by second lock hole 471, the
Three lock hole 4613 and first lock hole 4512 and lock connection, and torsion spring pin 491 is filled with safe anti-falling located at termination point casing 451
Put in the end face slit 4511 between 46, other end torsion spring pin 492 is in the slit 411 on driving shaft 41.
After using such scheme, when needing to make weight increase, swinging handle clockwise 47, such as Figure 15 to Figure 17 and Figure 10
With shown in Figure 11, handle 47 drives termination point casing 451 and catching device 461 synchronously to turn clockwise, and the energy storage of torsion spring 49 makes catching device
461 inner side Relative friction pieces 44 are produced to the moment of torsion for turning clockwise, while being formed between pressing friction piece 44, with friction plate 44
Frictional force, under frictional force effect, ratchet 42 with the unitary rotation of driving shaft 41, after weight reaches lifting height, ratchet 43 with
The contact of ratchet 421 on ratchet 42, prevents driving shaft 41 from turning round, and makes weight that positioning is produced after height is reached；And working as needs makes
When handcart supports the bracket of weight to decline, then swinging handle counterclockwise 47, as shown in Figure 18 to Figure 20 and Figure 13 and Figure 14, handle
47 drive termination point casings 451 and catching device 461 rotate counterclockwise a minute angle, and torsion spring 49 resets so that termination point casing
451 and the relative driving shaft 41 of catching device 461 produce small displacement laterally, so as to eliminate catching device 461 and friction plate 44 it
Between frictional force, this displacement may be set to 2mm or so, after handle 47 drives termination point casing 451 to touch locking stop nut 48, end
No longer rotate against between headgear 451 and catching device 461 and driving shaft 41, but drive driving shaft 41 synchronous counterclockwise
Rotation, now, ratchet 42, no longer with the unitary rotation of driving shaft 41, now, shakes counterclockwise hand under the conflict effect of ratchet 43
Handle 47 can make handcart support the bracket of weight steadily to decline.During handcart steadily rises or steadily declines, catching device 461
Internal claw 4613 is shunk all the time within the circumference between two disks, and when there is the wear out failure of friction plate 44 or weight is super
Load, the torque that weight is produced exceeds moment of friction, and weight produces the moment quickly fallen, the claw inside catching device 461
4613 under the action of the centrifugal force, can outwards throw away rapidly, stretches out outside the circumference between two disks, so as to be stuck in gear shrouding
On the annular ratchets arranged on 462, so as to limit driving shaft 41 continue to rotate counterclockwise, it is to avoid potential safety hazard accident
Generation.
Above example technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any improvement done on the basis of technical scheme and equivalent, this is each fallen within
Within bright protection domain.
Claims (3)
1. a kind of safety anti-falling device of lifting handcart, including reduction gear box, it is characterised in that set on the inside of the gear-box
Have reducing gear, outside is provided with accommodating cavity, be provided with the accommodating cavity driving shaft, ratchet, ratchet, friction plate, spiral clamping device,
Safety anti-falling device, wherein, ratchet is movably arranged on gear-box, and ratchet is rotatably arranged on driving shaft, friction plate edge
Axially located at the both sides of ratchet, one end of driving shaft is connected with reducing gear, other end connection spiral clamping device, and spiral pressure
Tightly safety anti-falling device is set between device and outboard friction piece, and safety anti-falling device is fixedly connected with spiral clamping device.
2. a kind of safety anti-falling device of lifting handcart as claimed in claim 1, it is characterised in that described safe anti-falling dress
Put including catching device and gear shrouding, the drawing that described catching device includes two disks and circular array is distributed between two disks
Spring and claw, and one end of claw is rotatablely arranged between two disks, the other end is connected with extension spring, and the other end of extension spring is consolidated
Due between two disks.
3. a kind of safety anti-falling device of lifting handcart as claimed in claim 1 or 2, it is characterised in that described spiral pressure
Tight device includes termination point casing, and termination point casing is fixedly connected with safety anti-falling device, and inner side reclines safety anti-falling device, and outside is fixed
Handle, is provided with locking stop nut on the outside of handle, and the inside of termination point casing is provided with torsion spring, and one end of the torsion spring is located at termination point casing
End face between safety anti-falling device, the other end is located at driving shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611183089.5A CN106629533A (en) | 2016-12-20 | 2016-12-20 | Safe anti-falling device of lifting handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611183089.5A CN106629533A (en) | 2016-12-20 | 2016-12-20 | Safe anti-falling device of lifting handcart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106629533A true CN106629533A (en) | 2017-05-10 |
Family
ID=58835059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611183089.5A Pending CN106629533A (en) | 2016-12-20 | 2016-12-20 | Safe anti-falling device of lifting handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106629533A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468732A (en) * | 2018-06-11 | 2018-08-31 | 漳州市龙文区上野技术开发服务部 | A kind of anti-fall brake disc of door roller and brake base |
| CN114590741A (en) * | 2022-03-07 | 2022-06-07 | 徐州永盛机电有限公司 | Auxiliary mounting device for rear axle of electric tricycle |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2324136Y (en) * | 1997-06-27 | 1999-06-16 | 金元云 | Heavy material capstan engine and plastic greenhouse sunshade curtain winding machine |
| CN2389876Y (en) * | 1999-08-17 | 2000-08-02 | 冶钢集团有限公司冶金设备公司 | Hand forklift |
| CN200999188Y (en) * | 2007-01-08 | 2008-01-02 | 王鹏 | Hand-operated hoister empty stop clutching mechanism |
| CN201588911U (en) * | 2009-10-13 | 2010-09-22 | 吴自传 | Energy-saving overdrive automatic transmission |
| 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 |
| CN204067962U (en) * | 2014-07-02 | 2014-12-31 | Abb技术有限公司 | lifting handcart |
| CN105972201A (en) * | 2016-05-04 | 2016-09-28 | 施耐德电气(厦门)开关设备有限公司 | Improved locking device for main rotating shaft and application |
-
2016
- 2016-12-20 CN CN201611183089.5A patent/CN106629533A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2324136Y (en) * | 1997-06-27 | 1999-06-16 | 金元云 | Heavy material capstan engine and plastic greenhouse sunshade curtain winding machine |
| CN2389876Y (en) * | 1999-08-17 | 2000-08-02 | 冶钢集团有限公司冶金设备公司 | Hand forklift |
| CN200999188Y (en) * | 2007-01-08 | 2008-01-02 | 王鹏 | Hand-operated hoister empty stop clutching mechanism |
| CN201588911U (en) * | 2009-10-13 | 2010-09-22 | 吴自传 | Energy-saving overdrive automatic transmission |
| CN204067962U (en) * | 2014-07-02 | 2014-12-31 | Abb技术有限公司 | lifting handcart |
| 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 |
| CN105972201A (en) * | 2016-05-04 | 2016-09-28 | 施耐德电气(厦门)开关设备有限公司 | Improved locking device for main rotating shaft and application |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108468732A (en) * | 2018-06-11 | 2018-08-31 | 漳州市龙文区上野技术开发服务部 | A kind of anti-fall brake disc of door roller and brake base |
| CN114590741A (en) * | 2022-03-07 | 2022-06-07 | 徐州永盛机电有限公司 | Auxiliary mounting device for rear axle of electric tricycle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170510 |
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| WD01 | Invention patent application deemed withdrawn after publication |