CN110255335A - A kind of lifting tool of hydraulic self-locking brake - Google Patents
A kind of lifting tool of hydraulic self-locking brake Download PDFInfo
- Publication number
- CN110255335A CN110255335A CN201910557423.6A CN201910557423A CN110255335A CN 110255335 A CN110255335 A CN 110255335A CN 201910557423 A CN201910557423 A CN 201910557423A CN 110255335 A CN110255335 A CN 110255335A
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- China
- Prior art keywords
- crank
- horizontal axis
- hydraulic
- lifting tool
- self
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
- B66B9/02—Kinds or types of lifts in, or associated with, buildings or other structures actuated mechanically otherwise than by rope or cable
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Civil Engineering (AREA)
- Automation & Control Theory (AREA)
- Braking Arrangements (AREA)
Abstract
A kind of lifting tool of hydraulic self-locking brake.Including fixed bracket, the bracket connects rotatable horizontal axis by plain bearing, and stretching out holder part vehicle on the left of horizontal axis has screw thread, is cased with removable nut above, and end is equipped with fixture nut.The inner ring of holder part connection unilateral bearing is stretched out on the right side of horizontal axis, the outer ring of unilateral bearing then connects a set crank link structure.The bottom of bracket is fixed with hydraulic jack, the pump oil end Cylinder Plunger jointed crank connecting rod mechanism of jack, and damping device and fixed baffle are equipped with above the load-bearing end Cylinder Plunger of jack.The unloading oil return valve of the lower end of jack is equipped with switching mechanism, can open manually or spring is self-closing.Have it is easy to operate, securely and reliably, the cheap and energy-saving effect of manufacturing cost.
Description
Technical field
The present invention relates to a kind of lifting tool, specifically a kind of lifting tool of hydraulic self-locking brake.
Background technique
Existing high-altitude slow-falling device product or small hoisting tool (such as common hoist crane) are substantially and utilize machine
Tool solid dry friction carrys out retarding braking.But dry friction belongs to vicious circle, coefficient of friction can be because the fever in use be ground
The factors such as damage generate change dramatically and have the danger for causing to fail at any time.It is uncontrollable when in addition also using, to user's weight
Require etc..So similar product both domestic and external is all that every use once just greatly increases wear-out failure rate at present, some factories
The sky-saver in the such as U.S., family then clearly states to use once just to scrap.
Although in addition some lifting gears during lifting heavy can directly using ratchet mechanism come reverse self-locking,
Can not be self-locking in the same direction during declining goods and materials or people, it can only be controlled by lasting holding using external force.It cannot solve very well
Decline weight how in the same direction self-locking problem on the way.
Summary of the invention
The invention solves being existing lifting tool using mechanical solid dry friction come retarding braking, decline weight process
In can not be self-locking, dangerous insecure problem.
The technical solution adopted by the present invention is that: a kind of lifting tool of hydraulic self-locking brake, including fixed bracket, it is described solid
Fixed rack is equipped with rotatable horizontal axis, and the left distal end of horizontal axis is fixedly connected with swingle or integrally connected, the end of swingle
End is equipped with fixture nut, and fixture nut is equipped with ratchet spanner, it is erected on unilateral bearing on the right side of horizontal axis, the fixed branch
The bottom of frame is fixed with hydraulic jack, and the load-bearing end of hydraulic jack is set to support bracket fastened inside, hydraulic jack
Pump oil end be set to support bracket fastened outside, the top of the jacking cylinder plunger at hydraulic jack load-bearing end is equipped with bumper and absorbing shock
Device and fixed baffle, fixed baffle are fixed on fixed bracket；The right-hand end of horizontal axis is connected by unilateral bearing and a set of crank
Linkage is connected, and the oil pump Cylinder Plunger at the pump oil end of the lower end and hydraulic jack of crank link mechanism is hinged；Hydraulic thousand
The lower end on jin top is equipped with valve switch mechanism, and valve switch mechanism can control the folding of the unloading oil return valve of hydraulic jack.
Further, the valve switch mechanism is L-shaped, and one end is held for operator, and the other end is equipped with reset
Spring.
Further, if being difficult to ensure that enough spaces can allow all ropes all to wind on transverse axis, Ke Yizeng
The diameter of big horizontal axis, while its outer circle being allowed no longer to be slot that is smooth, but being provided with certain angle, need to only it allow rope upper in this way
Winding one circle left and right in face guarantees horizontal axis can be driven to generate rotary motion, or use class when face is mobile on transverse axis for rope
Like the chain structure of bicycle.
Further, the crank link mechanism includes crank rotating disk, crank arm, crank connecting link, crank-pin, oil pump oil
Cylinder plug is mutually linked by crank-pin with crank connecting link, and crank arm is located at the top of crank connecting link and is inserted into crank rotating disk.
Further, the upper end of the horizontal axis is equipped with rotatable faking device axis, also sets up on faking device axis useful
In the faking device idler wheel of guidance rope.
Further, safety device is additionally provided on the swingle, the safety device includes travelling nut and safety chain
Item, swingle are equipped with the screw thread matched with travelling nut, and one end of the insurance chain is hung on travelling nut, the other end
It hangs on fixed bracket.
Further, the periphery of the crank rotary sleeve is cased with U-shaped friction block and friction plate, sets on the U-shaped friction plate
There is adjusting screw rod, the elastic of U-shaped friction plate is adjusted by turning adjusting screw rod.
Further, bolt is additionally provided on the swingle on the outside of the ratchet spanner.
Further, overflow valve is equipped in the hydraulic jack oil circuit pipeline before the valve；The hydraulic jack
Check valve inside top is furnished with self-closing spring.
Further, the hydraulic jack is with there are two oil pump Cylinder Plungers.
Beneficial effects of the present invention and feature are:
1, operation is easy.By the controllable decline of control unloading oil return valve or stop, not needing the strong skill of user
And psychological quality realizes the self-locking function during decline using the self-closing unloading oil return valve of little spring.
2, safe and reliable.Braking support in use is being stressed directly by hydraulic cylinder, passes through crank link mechanism
The end face for being transmitted to horizontal axis is stopped rotating to control it, is additionally provided with spare insurance chain；In addition the hydraulic system in jack
Belong to benign cycle system, can effectively use in indefinite duration.
3, manufacturing cost is low.By jack hydraulic system, crank link mechanism, ratchet mechanism etc. has been applied very mature general
Logical technical equipment combines, therefore to using the material and processing technology not to have particular/special requirement.
4, energy-saving.The friction stopping device of existing electric crane such as storied building elevator is such as replaced with this equipment,
It then can achieve energy-saving effect.Only valve 14 need to be allowed by horizontal axis and motor rotor by key or gear rigid connection
Switch it is synchronous with the start-stop of motor rotor holding, in this way during lifting heavy by motor rotor rotate
It completes, braking support when stopping is exactly hydraulic cylinder is stressed directly to complete.Decline then only needs circuit control hydraulic valve
Switch, do not need motor energization, i.e., the advantages of sufficiently having merged electric crane and hydraulic crane.Especially for port
Mouthful loop wheel machine can not find suitable spring since the Container Weight of lifting reaches tens tons to provide sufficiently large elastic force and squeeze
Pressure friction plate generates enough frictional force to support, it is also necessary to set up individual device in addition to provide external force.
Detailed description of the invention
Fig. 1 is the overall structure diagram of present pre-ferred embodiments；
Fig. 2 is the side structure schematic view of Fig. 1；
Fig. 3 is the schematic diagram of internal structure of Fig. 1 hydraulic jack；
Fig. 4 is schematic diagram when present pre-ferred embodiments are specifically used；
Appended drawing reference indicates in figure: the fixed bracket of 1-, 2- plain bearing, 3- horizontal axis, 4- faking device, 5- faking device idler wheel,
6- unilateral bearing or 7- crank rotary sleeve, 8- crank arm, 9- crank connecting link, 10- crank-pin, 11- oil pump Cylinder Plunger, 12- liquid
Jack, 13- load-bearing jacking cylinder plunger, 14- is pressed to unload oil return valve, 15- valve switch mechanism, the self-closing spring of 16-, 17- bullet
Spring fulcrum, 18- bumper and absorbing shock rubber, 19- fixed baffle, 20- chain fulcrum, 21- insurance chain, 22- travelling nut are (on nut
Have hook, can be with hanging chain), 23- ratchet spanner, 24- ratchet spanner button (clutch of control positive and negative rotation), 25- fixture nut,
26- bolt (preventing ratchet spanner from falling off), 27- friction block (friction plate is fixedly mounted), 28- friction plate, 29- pressure spring, 30-
Adjusting screw rod, 31- swingle, 32- overflow valve, 33- check valve, 34- loading or manned.
Specific embodiment
Invention is further explained with reference to the accompanying drawing:
Embodiment 1
As shown in Figure 1 and Figure 2, a kind of lifting tool of hydraulic self-locking brake, including fixed bracket 1, the fixed bracket 1
It is equipped with the rotatable horizontal axis 3 for being used to wind rope, the upper end of the horizontal axis 3 is equipped with rotatable faking device axis 4, disk
The faking device idler wheel 5 for guiding rope, preventing winding is also provided on rope device axis 4；The left distal end and swingle 31 of horizontal axis 3
It is fixedly connected, the end of swingle 31 is equipped with ratchet spanner 23, and the right side of horizontal axis 3 is erected on unilateral bearing 6, the fixed branch
The bottom of frame 1 is fixed with hydraulic jack 12, and the load-bearing end of hydraulic jack 12 is set to the inside of fixed bracket 1, hydraulic
The pump oil end of jack 12 is set to the outside of fixed bracket 1, the top of the jacking cylinder plunger 13 at 12 load-bearing end of hydraulic jack
End is equipped with damping device 18 (rubber or spring) and fixed baffle 19, and fixed baffle 19 is fixed on fixed bracket 1；It is horizontal
The right-hand end of axis 3 is connected by unilateral bearing 6 with a set crank link structure, the lower end of crank link mechanism and hydraulic jack
The oil pump Cylinder Plunger 11 at 12 pump oil end is hinged；The lower end of hydraulic jack 12 be equipped with valve switch mechanism 15 (it is L-shaped,
One end is held for operator, and the other end is furnished with reset spring 16), valve switch mechanism 15 can control hydraulic jack 12
Unloading oil return valve 14 folding.
Horizontal axis 3 is connect by bearing 2 with bracket 1, can be rotated freely.One end of horizontal axis is further through (or the spine of unilateral bearing 6
Take turns mechanism) a set of crank link mechanism to convert rotary motion to linear reciprocating motion of connection, the crank link mechanism
Including crank rotating disk 7, crank arm 8, crank connecting link 9, crank-pin 10, oil pump Cylinder Plunger 11 is connected by crank-pin 10 and crank
The hinge joint of 9 phase of bar, crank arm 8 are located at the top of crank connecting link 9 and are inserted into crank rotating disk 7；
The inner ring of unilateral bearing 6 is connected by keyway with horizontal axis with horizontal axis 3, and outer ring then passes through keyway and crank rotating disk 7
Another load-bearing of connection, 11. jack of oil pump Cylinder Plunger that connecting rod 9 connects hydraulic jack by crank-pin 10 jacks oil
The top of cylinder plug 13 has the unloading oil return valve 14 of 19. jack of a damping device 18 and fixed baffle to have a switch dress
15 are set, is connect by reset spring 16 with bracket, normally off is kept.
Referring to FIG. 4, being wound according to certain orientation in use, one end of rope is fixed on horizontal axis 3, end bypasses disk
It is fixed at the fulcrum of high-altitude after the idler wheel 4 of rope device 5, human body then passes through safety belt or seat plate is suspended below bracket.People at this time
The gravity of body, which then passes through rope and acts on the side of horizontal axis, to be generated torque horizontal axis is forced to generate rotary motion, then by crank connecting link machine
Structure makes the hydraulic oil that the oil pump Cylinder Plunger of hydraulic jack generates linear reciprocating motion and pump oil generates certain pressure, due to
Valve 14 is to be in close state, so the load-bearing jacking cylinder plunger of jack is forced to move up, withstand damping device and
Until stopping after fixed baffle, entirety is static in the sky.
If artificial control handle 15 overcomes the elastic force of spring 16 to open valve 14, hydraulic oil in jack if, can be downward
Flow back into the fuel tank in jack, load-bearing jacking cylinder plunger 13 will not stress, then horizontal axis is then freely rotatable release
Rope declines human body, although oil pump Cylinder Plunger 11 can move back and forth generation pumping effect, hydraulic oil by this thousand
The jin top free shuttling movement no pressure of internal system, and be a kind of benign cycle.When dropping to predetermined altitude, human body is only needed gently
Light release handle 15, then 16 automatic-closing valve 14 of spring, it is whole but it is static in the sky.It follows the walk, uses freely, that is, reach
Self-locking function during decline, and while stopping is that the hydraulic cylinder relied on is stressed directly support, so crying end face support
Lift method.
Such as this equipment is used to rise in the sky, there are many methods, provide simplest ratchet spanner lever method here.I.e.
Suitable ratchet spanner 23 is sleeved in fixture nut 25,31 end of swingle has bolt 26 to prevent in its use from axial direction
It falls off.Waggle pinch bar need to be only exerted oneself when using i.e. up to making horizontal axis reversely rotate winding rope, reached on the whole
The purpose risen.For example rise overally when firmly pressing lever downwards, it does not stress then when being lifted up lever back again, because
There is unilateral bearing 6 to drive crank mechanism and hydraulic jack system self-locking support.It as needed can be with the length of Lengthened wrench lever
Degree.There are gear reduction or turbine and worm decelerator as other methods, shakes or hold hand in hand with bonding force and is rechargeable
Motor etc..
There are two types of purposes for the use of product of the present invention combination rope.If fixing one end of rope, it can be used for human body height
The slow drop of sky rises and vacantly stops.If fixing this equipment, it can be used for being promoted or being declined weight.
For large lifting equipment, such as electric crane and hydraulic crane, they respectively have an advantage in that and disadvantage.Electricity
The advantages of dynamic crane such as resident's elevator is that hoisting depth is easy, and motor rotor, which is powered to rotating, rolls rope promotion weight
Object can only carry out the generation of extrusion friction piece the disadvantage is that braking support when hanging stopping is fragile by the elastic force external force that spring provides
Frictional force carrys out braking support.And hydraulic crane such as warehouse Cargo Lift is then just the opposite, advantage is that hanging braking support is reliably held
Easily, valve closing hydraulic oil need to be only closed, because liquid is cannot be compressed.But the disadvantage is that the height promoted is by hydraulic
The limitation of Cylinder Plunger stroke.Basic reason is exactly on basic academic theory, to the braking method of the object of rotary motion
There is one kind to be side extrusion friction method.And the present invention just there is provided another method end face support lift method, Ke Yirong
The advantages of closing both lifting equipments.
Embodiment 2
Referring to FIG. 3, the flow resistance that the aperture for passing through control valve 14 is controllable hydraulic oil is controlled to reach
Whole decrease speed, but it is preferably handling in order to obtain, it is that the present embodiment is before valve 14 with 1 difference of embodiment
Overflow valve 32 is added in the oil circuit pipeline in face.In addition this equipment is cased with U-shaped friction block 27 and friction in the periphery of crank rotary sleeve 7
Piece 28 generates different elastic force, then extrusion friction block 27 and friction plate by rotation adjusting screw rod 30 to squeeze pressure spring 29
28 come to the frictional resistance generated to crank arm 7.
It is necessary when using since the unidirectional valve ball inside Normal hydraulic jack on the market is gravity formula
It is to try in plumbness.It remains to effectively use as needed it to be under horizontal or wide-angle tilt state, it can be hydraulic thousand
Install self-closing spring in the bead of check valve 33 inside jin top additional (i.e. for supporting the spring of check valve 33).
In addition it in use when closing valve 14, is moved upwards if the oil pump Cylinder Plunger 11 of jack is in
State is acted in oil suction, need equal horizontal axis 3 continue half revolution make 11 in move downward generate pumping effect when
Jacking cylinder 13 could be driven to move up, so if tool can be used, and there are two oil in order to obtain better reaction speed and precision
The jack of pump oil cylinder plug, at 180 degree angle when movement, i.e. a plunger moves upwards another plunger in oil suction effect
It is moving downward in pumping effect.
There are also if necessary to excessive to several hundred upper kms using the height of present device, it is difficult to which guarantee has enough spaces
All ropes can be allowed all to wind on transverse axis, the diameter of horizontal axis can be increased, while its outer circle being allowed no longer to be smooth, but
It is provided with the slot of certain angle, need to only allow rope to enclose left and right in wound thereon one in this way, that is, is guaranteed when face is mobile on transverse axis for rope
It is that horizontal axis can be driven to generate rotary motion, or the chain structure etc. using similar bicycle.
Embodiment 3
In order to preferably use, this product is additionally provided with spare safety device.There is external screw thread 31 in the other end vehicle of horizontal axis, end
Fixture nut 25, and the travelling nut 22 with hook are held, one end of insurance chain 21 is hung on travelling nut 22, and the other end is hung over
On fixed bracket 1.Even if unexpected failure effect occurs in hydraulic system in use, then the quick rotation out of control of horizontal axis 3, nut 22 then can
It automatically moves on transverse axis, insurance chain 21 will be driven to be rotated together until drawing extremely stops after reaching terminal and fixture nut contact
Only.If you do not need to using this insurance, one end of chain can be disengaged.It is general only to begin to use debugging or hanging for a long time
Stop needing to use this insurance function when aerial work.
The present invention has carried out basic theory innovation, another method is provided to carry out the object that rotation round moves
Braking and support.Solves a technical problem, i.e., the self-locking problem in the same direction during decline in lifting field.Industrially
The friction stopping device of replaceable crane motor, it is civilian on can be used for high-altitude slow-descending operation.
Basic principles and main features of the invention have been shown and described above It should be understood by those skilled in the art that originally
Invention is not restricted to the described embodiments, the above embodiments and description only describe structural relation of the invention and
Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these change and change
Into all fall within the protetion scope of the claimed invention.
Claims (10)
1. a kind of lifting tool of hydraulic self-locking brake, including it is fixed bracket (1), the fixed bracket (1) is equipped with rotatable
Horizontal axis (3), the left distal end of horizontal axis (3) is fixedly connected with swingle (31) or integrally connected, and the end of swingle (31) is set
Have fixture nut (25), fixture nut (25) is equipped with ratchet spanner (23), is erected at unilateral bearing (6) on the right side of horizontal axis (3)
On, the bottom of the fixed bracket (1) is fixed with hydraulic jack (12), and the load-bearing end of hydraulic jack (12) is set to solid
The inside of fixed rack (1), the pump oil end of hydraulic jack (12) are set to the outside of fixed bracket (1), hydraulic jack (12)
The top of the jacking cylinder plunger (13) at load-bearing end is equipped with damping device (18) (rubber or spring) and fixed baffle (19),
Fixed baffle (19) is fixed on fixed bracket (1)；The right-hand end of horizontal axis (3) passes through unilateral bearing (6) and a set of crank connecting link
Mechanism is connected, and the lower end of crank link mechanism is hinged with the oil pump Cylinder Plunger (11) at the pump oil end of hydraulic jack (12)；
The lower end of hydraulic jack (12) is equipped with valve switch mechanism (15), and valve switch mechanism (15) can control hydraulic jack (12)
Unloading oil return valve (14) folding.
2. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: the valve switch mechanism
(15) L-shaped, one end is held for operator, and the other end is furnished with reset spring (16).
3. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: if be difficult to ensure enough
Space can allow all ropes all winding on transverse axis, can increase the diameter of horizontal axis, while its outer circle being allowed no longer to be smooth
, but it is provided with the slot of certain angle, it need to only allow rope to enclose left and right in wound thereon one in this way, that is, guarantee to work as rope on transverse axis
When face is mobile, horizontal axis can be driven to generate rotary motion, or the chain structure using similar bicycle.
4. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: the crank link mechanism packet
Crank rotating disk (7), crank arm (8), crank connecting link (9), crank-pin (10) are included, oil pump Cylinder Plunger (11) passes through crank-pin
(10) it is mutually linked with crank connecting link (9), crank arm (8) is located at the top of crank connecting link (9) and is inserted into crank rotating disk (7)；
The inner ring of unilateral bearing (6) is connected by keyway with horizontal axis with horizontal axis (3), and the outer ring of bearing (6) then passes through keyway and crank rotation
Turntable (7) connection.
5. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: the upper end of the horizontal axis (3)
Equipped with rotatable faking device axis (4), the faking device idler wheel (5) for guiding rope is also provided on faking device axis (4).
6. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: on the swingle (31) also
Equipped with safety device, the safety device includes travelling nut (22) and insurance chain (21), and swingle (31) is equipped with and shifting
One end of the screw thread that dynamic nut (22) match, insurance chain (21) is hung on travelling nut (22), and the other end hangs over solid
On fixed rack (1).
7. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: the crank rotary sleeve (7)
Periphery be cased with U-shaped friction block (27) and friction plate (28), the U-shaped friction plate (27) is equipped with adjusting screw rod (30), passes through
It turns adjusting screw rod (30) and the elastic of U-shaped friction plate (27) is adjusted.
8. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: the ratchet spanner (23) is outside
Bolt (26) are additionally provided on the swingle (31) of side.
9. the lifting tool of hydraulic self-locking brake according to claim 1, it is characterised in that: before the valve (14)
Hydraulic jack oil circuit pipeline in be equipped with overflow valve (32)；Check valve (33) inside the hydraulic jack is furnished with self-closing bullet
Spring.
10. the lifting tool of hydraulic self-locking brake described in any claim according to claim 1~9, it is characterised in that: institute
Hydraulic jack is stated with there are two oil pump Cylinder Plungers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557423.6A CN110255335A (en) | 2019-06-25 | 2019-06-25 | A kind of lifting tool of hydraulic self-locking brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910557423.6A CN110255335A (en) | 2019-06-25 | 2019-06-25 | A kind of lifting tool of hydraulic self-locking brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110255335A true CN110255335A (en) | 2019-09-20 |
Family
ID=67921527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910557423.6A Pending CN110255335A (en) | 2019-06-25 | 2019-06-25 | A kind of lifting tool of hydraulic self-locking brake |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110255335A (en) |
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| US20150375975A1 (en) * | 2013-02-07 | 2015-12-31 | Macgregor Pusnes As | Traction winch |
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