CN100572255C - The opening-closing control mechanism of single rope grab - Google Patents
The opening-closing control mechanism of single rope grab Download PDFInfo
- Publication number
- CN100572255C CN100572255C CNB2006100274897A CN200610027489A CN100572255C CN 100572255 C CN100572255 C CN 100572255C CN B2006100274897 A CNB2006100274897 A CN B2006100274897A CN 200610027489 A CN200610027489 A CN 200610027489A CN 100572255 C CN100572255 C CN 100572255C
- Authority
- CN
- China
- Prior art keywords
- fluid port
- hydraulic fluid
- oil
- hydraulic
- fuel tank
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The present invention discloses a kind of opening-closing control mechanism of single rope grab, comprise: two oil cylinders, each oil cylinder comprises cylinder body, piston rod and piston, cylinder body is located on the grab bucket through beam, piston rod is connected with the grab bucket slip base, and the piston center is provided with the through hole of the upper and lower cavity that is communicated with cylinder body; The corresponding thimble that is provided with of cylinder base, the thimble center is provided with perforation; Cylinder base also is provided with first hydraulic fluid port and second hydraulic fluid port, and first hydraulic fluid port communicates with perforation, and second hydraulic fluid port communicates with rodless cavity; Each oil cylinder also comprises one group of check valve that is used for the fluid of unidirectional conducting upper and lower cavity, is located on the piston or is located on the exterior pipeline of oil cylinder; Rod chamber regulating control loop comprises first hydraulic pipe and change-over valve, and first hydraulic pipe is connected between first hydraulic fluid port and the fuel tank, and change-over valve is located on first hydraulic pipe, is used to control the conducting direction of fluid between first hydraulic fluid port and fuel tank; Rodless cavity regulating control loop is connected between second hydraulic fluid port and fuel tank of oil cylinder, in order to regulate the second hydraulic fluid port oil-out back pressure and oil-absorbing speed.
Description
Technical field
The present invention relates to a kind of opening-closing control mechanism of single rope grab, relate in particular to a kind of shock-free opening-closing control mechanism when single rope grab is opened and closed.
Background technology
Single rope remote control grab bucket is the mechanical equipment of being located on the machines such as hoisting crane, capstan engine, winch or coaster, being used to load and unload bulk goods, has two types substantially: (1) cylinder top formula; (2) clamping bar formula.The formula remote control grab bucket of cylinder top is that the mode that adopts master cylinder to withstand left and right sides eccentric disk is pinned grab bucket, and the pressure that master cylinder bears is very big, and oil cylinder has leakage slightly, and grab bucket will exploded arrow.In addition, when remote control grab bucket was opened, the grab bucket opening speed was too fast, and material moment is promptly finished discharging, and it is bigger to cause grab bucket to impact, and does not fit into entrucking especially.Clamping bar formula remote control grab bucket is the self-locking that frictionally reaches grab bucket, and the pressure that master cylinder bears reduces greatly, but this grab bucket still exists and impact big shortcoming, still is all to have a significant impact in service life of grab bucket itself to hoisting crane.In addition, because these two kinds of grab buckets all have very big impact,, in the grab bucket cushion cylinder to be housed, but just reduce the digging force of grab bucket like this, reduce the extracting ability of grab bucket in order to reduce to impact.
Impact big problem for grab bucket, common practices is to increase cushion cylinder in addition to solve in the prior art, the patent No. for example shown in Figure 1 is the Chinese utility model patent of ZL03256014.1, this is that mechanism for opening/closing is the single rope grab of clamping bar formula structure, and this single rope grab is made of deck beam 14, middle bolster 18, through beam 19, bucket body 20, strut, slip base, guide rail and hydraulic efficiency pressure system and command and control system etc.Hydraulic efficiency pressure system is made up of master cylinder 10, oil cylinder protector 11 and energy disperser 15; Master cylinder 10 is an operating cylinder, is installed in the slip base center.Command and control system comprises storage battery device 9, receiver of remote-control sytem 11, connection box 13 and remote controller projector, is mainly used in the solenoid directional control valve commutation that the control master cylinder is installed.
The joint of single rope grab mechanism for opening/closing by remote control equipment (RCE) control grab bucket slip base and through beam, separate.Mechanism for opening/closing is made up of a pair of eccentric disk 16, inclined plate 17, hydraulic pressure clamping bar 3; Wherein a pair of eccentric disk 16 is installed in through beam 19 central upper portion positions, and hydraulic pressure clamping bar 3, inclined plate 17 are installed in the slip base, and remote control equipment (RCE), master cylinder also are installed on it; Master cylinder is a plunger tpe single-acting operating cylinder, and stage clip 22 is installed above the main oil cylinder piston bar, is convenient to oil cylinder piston bar return, and piston-rod lower end and hydraulic pressure clamping bar 3 are connected as a single entity.Piston rod on, the master cylinder 10 20 open-shaped when single rope grab is depressed, stage clip 22 is the compression shape and the oil cylinder change-over valve is closed; This moment, slip base descended with steel rope; make the lower inclined plane to the inside deflection of eccentric disk 16 along inclined plate 17; at last; eccentric disk bottom and inclined plate top compress; hydraulic pressure clamping bar 3 is wedging eccentric disk 16 middle parts under master cylinder 10 effects, by the friction that produces between face and the face, guarantee that slip base and through beam secure fixation are one; spur steel rope this moment, can close closure with having grabbed bucket.When grab bucket is opened, the operating and remote controlling projector, after receiver of remote-control sytem 11 is received instruction, make the master cylinder solenoid directional control valve get electric commutation, piston rod moves up under pull back spring 22 effects, and clamping bar 3 shifts out in the middle of the eccentric disk 16 under it drives, and eccentric disk and inclined plate 17 unclamp, slip base separates with through beam under the lineoutofservice signal pull effect, and grab bucket can be opened.Because master cylinder itself does not have any buffer gear, it is too short that therefore the time is opened in grab bucket, and it is bigger to impact, and for avoiding impacting, hydraulic efficiency pressure system is equipped with the large and small cushion cylinder six roots of sensation, and pipe fitting is more, and installation is complicated, the cost height; Pipe fitting loosening easily damage under the impact shock effect simultaneously, unfailing performance descends.
Summary of the invention
Technical matters to be solved by this invention provides a kind of opening-closing control mechanism that can reduce the single rope grab impact greatly.
Principle of the present invention is, utilizes moving down of oil cylinder piston and slowing down of ascending velocity, reaches to reduce the purpose of grabbing bucket and impacting.Specifically, when the piston rod at oil cylinder moves down (grab bucket is closed), the fuel-displaced flow/pressure of control oil cylinder rodless cavity and the oil-feed flow of rod chamber, piston rod is moved down be subjected to certain resistance, and when piston rod rose (grab bucket is opened), the oil-feed flow of control oil cylinder rodless cavity and the fuel-displaced flow of rod chamber made piston rod rise equally and are subjected to certain resistance, thereby slow down the moving velocity of piston rod, reduce to impact.
The present invention solves the problems of the technologies described above the technical scheme that adopts to be:
A kind of opening-closing control mechanism of single rope grab is provided, and this single rope grab comprises bucket body, through beam, strut, deck beam and slip base; Be provided with pulley in the slip base, be connected as a single entity by steel rope and the fixed pulley that hangs on deck beam; Bucket body is connected with through beam, and strut one end connects bucket body, and the other end is connected with deck beam, and this opening-closing control mechanism is used to control the unlatching and the closure of single rope grab, is characterized in comprising:
Two oil cylinders, each oil cylinder comprises cylinder body, piston rod and piston, and described cylinder body is located on the through beam, and described piston rod protrudes upward with described slip base and is connected, and the piston center is provided with the rod chamber of connection cylinder body and the through hole of rodless cavity; The cylinder base correspondence is provided with can insert the thimble that blocks described through hole, and the thimble center is provided with perforation; Cylinder base also is provided with first hydraulic fluid port and second hydraulic fluid port, and described first hydraulic fluid port communicates with described perforation, and described second hydraulic fluid port communicates with the rodless cavity of oil cylinder; Each oil cylinder also comprises one group of check valve that is used for unidirectional conducting rodless cavity to the fluid of rod chamber, is located on the described piston or is located on the pipeline of exterior connection rod chamber of oil cylinder and rodless cavity;
Rod chamber regulating control loop, comprise first hydraulic pipe and change-over valve, described hydraulic pipe is connected between first hydraulic fluid port and described fuel tank of oil cylinder, described change-over valve is located on first hydraulic pipe, be used to control the conducting direction of fluid between first hydraulic fluid port and fuel tank, when described piston rises, by commutation make fluid from first hydraulic fluid port to the fuel tank nonreturn flow;
Rodless cavity regulating control loop is connected between second hydraulic fluid port and described fuel tank of oil cylinder, in order to regulate the second hydraulic fluid port oil-out back pressure and oil-absorbing speed.
The opening-closing control mechanism of described single rope grab, wherein, described rod chamber regulating control loop also comprises the flow regulating valve of being located on described first hydraulic pipe.
The opening-closing control mechanism of described single rope grab, wherein, described change-over valve is a solenoid directional control valve.
The opening-closing control mechanism of described single rope grab, wherein, described rodless cavity regulating control loop comprises a flow regulating loop, and described flow control circuit comprises second hydraulic fluid port and the hydraulic pipe between the fuel tank and the flow regulating valve of being located on described second hydraulic pipe that is connected in oil cylinder.
The opening-closing control mechanism of described single rope grab, wherein, described rodless cavity regulating control loop comprises oil return line and oil suction loop; Describedly go out oil return line and comprise fuel-displaced hydraulic pipe and uniaxial pressure control element, described fuel-displaced hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described uniaxial pressure control element is located on the described fuel-displaced hydraulic pipe, make fluid from second hydraulic fluid port to the fuel tank nonreturn flow; Described oil suction loop comprises oil suction hydraulic pipe and one-way flow control element, described oil suction hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described oil suction hydraulic pipe, makes fluid from fuel tank to the second hydraulic fluid port nonreturn flow.Wherein, described uniaxial pressure control element comprises hydraulic control one-way valve and is located at control cock on the control oil channel of described hydraulic control one-way valve that described hydraulic control one-way valve is to be located on the described fuel-displaced hydraulic pipe from second hydraulic fluid port to the direction of fuel tank.Described one-way flow control element comprises flow regulating valve and check valve.
The opening-closing control mechanism of described single rope grab, wherein, described rodless cavity regulating control loop comprises oil return line and oil suction loop; Describedly go out oil return line and comprise fuel-displaced hydraulic pipe and one-way flow control element, described fuel-displaced hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described fuel-displaced hydraulic pipe, make fluid from second hydraulic fluid port to the fuel tank nonreturn flow; Described oil suction loop comprises oil suction hydraulic pipe and one-way flow control element, described oil suction hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described oil suction hydraulic pipe, makes fluid from fuel tank to the second hydraulic fluid port nonreturn flow.Wherein, the described one-way flow control element that goes out oil return line and oil suction loop includes flow regulating valve and check valve.
The opening-closing control mechanism of described single rope grab, wherein, described oil suction loop also comprises the oil suction filter, is located on the oil suction hydraulic pressure pipeline section between fuel tank and the one-way flow control element.
The opening-closing control mechanism of described single rope grab also comprises airfilter, is connected with described fuel tank.
The present invention compares existing opening-closing control mechanism, and its advantage is that the slip base descending speed is fast, can be consistent with the descending speed of crane hook, improved handling efficiency; The rate of onset that grab bucket is simultaneously opened is slower, can realize the no shock discharge of grab bucket; Two oil cylinder synchronization actions, thus oil cylinder and grab bucket framing member protected better.This just makes this grab bucket applying working condition comformability more extensive, and the ability of finishing the work is stronger, longer service life, and improved the handling efficiency of grab bucket.
Description of drawings
Further specify the features and advantages of the present invention below in conjunction with the drawings and specific embodiments, wherein:
Fig. 1 is that the patent No. is the structural representation of a kind of existing single rope grab of ZL03256014.1;
Fig. 2 is the structural representation of single rope grab of the present invention; Wherein Fig. 2 A is a front view, and Fig. 2 B is a lateral plan;
Fig. 3 is an oil cylinder scheme of installation of the present invention;
Fig. 4 is the oil cylinder cut-away view of one embodiment of the present of invention;
Fig. 5 is a first embodiment of the present invention hydraulic system principle figure;
Fig. 6 is a command and control system functional block diagram of the present invention;
Fig. 7 is a second embodiment of the present invention hydraulic system principle figure;
Fig. 8 is a third embodiment of the present invention hydraulic system principle figure;
Fig. 9 is a fourth embodiment of the present invention hydraulic system principle figure;
Figure 10 is a single rope grab open mode scheme drawing of the present invention;
Figure 11 is a slip base decline view of the present invention;
Figure 12 is a single rope grab closure state scheme drawing of the present invention.
The specific embodiment
See also Fig. 2, this single rope grab can adopt conventional structure, comprises bucket body 201, through beam 202, strut 203, deck beam 204 and slip base 205.Deck beam 204 inside are provided with fixed pulley 206 and guide rope device 207, slip base 205 is between deck beam 204 and through beam 202, its inside is provided with pulley 208, pulley 208 hangs on the fixed pulley 206 of deck beam 204 by the steel rope in the deck beam guide rope device 207 209, by moving up and down of steel rope 209 may command slip bases 205.Bucket body 201 is connected with through beam 202, and strut 203 1 ends connect bucket body 201, and the other end is connected with deck beam 204.
The hydraulic efficiency pressure system that the opening-closing control mechanism of single rope grab of the present invention comprises oil cylinder and controls this oil cylinder now sees also Fig. 3 and shown in Figure 4.Present embodiment preferably comprises two oil cylinders 210, and symmetry is located on the grab bucket through beam 202, needn't adopt conventional guide pipe structure like this, and slip base 205 is steadily moved up and down.Each oil cylinder 210 comprises cylinder body 211, piston rod 212 and piston 213, cylinder body 211 is located on the through beam 202, piston rod 212 protrudes upward with slip base 205 and is connected, piston 213 is provided with direction and is from bottom to top four check valves 214, and piston 213 centers also are provided with the through hole 213a that is communicated with cylinder body rod chamber 210a and rodless cavity 210b; The bottom correspondence of cylinder body 211 is provided with can insert the thimble 215 that blocks through hole 213a, and thimble 215 centers are provided with perforation 215a; The bottom of cylinder body 211 also is provided with first hydraulic fluid port 216 and second hydraulic fluid port 217, and wherein first hydraulic fluid port 216 communicates with perforation 215a, and second hydraulic fluid port 217 communicates with the rodless cavity 210b of oil cylinder.
Should be noted that, four check valves 214 are located on the piston 213 and are not construed as limiting, in another embodiment, four check valves 214 can be located on the pipeline of the exterior rod chamber 210a who is communicated with oil cylinders of oil cylinder 210 and rodless cavity 210b, more can be convenient to adjusting.
The hydraulic efficiency pressure system of oil cylinder 210 includes bar intonation joint control loop and rodless cavity regulating control loop.Wherein rod chamber regulating control loop is connected between first hydraulic fluid port 216 and fuel tank 22 of oil cylinder, fluid is flowed from fuel tank 22 to first hydraulic fluid ports 216, but flow is less, mainly play the back pressure effect, when piston 213 rises, by commutation make fluid from first hydraulic fluid port 216 to fuel tank 22 nonreturn floies; Rodless cavity regulating control loop is connected between second hydraulic fluid port 217 and fuel tank 22 of oil cylinder, in order to regulate second hydraulic fluid port, 217 fuel-displaced and oil-absorbing back pressures.Below enumerate the example in some rod chamber regulating control loops and rodless cavity regulating control loop, but not as limit.
Among hydraulic efficiency pressure system of the present invention first embodiment as shown in Figure 5, rod chamber regulating control loop 220 comprises first hydraulic pipe 221 and change-over valve 222, first hydraulic pipe 221 is connected between first hydraulic fluid port 216 and fuel tank 21 of oil cylinder 210, and change-over valve 222 is to be located on the pipeline of first hydraulic pipe 221 to the direction of fuel tank 21 from first hydraulic fluid port 216.Reach herein in the following description, check valve, change-over valve, hydraulic control one-way valve etc. have the parts of direction, if no special instructions, then so that the installation direction to fuel tank is a forward from oil cylinder, serve as reverse with fuel tank from the installation direction of oil cylinder.In the present embodiment, change-over valve 222 adopts solenoid directional control valve, but not as limit, can also adopt hydraulic directional control valve, electro-hydraulic reversing valve etc.Solenoid directional control valve 222 adopts remote control control, please in conjunction with consulting Fig. 3 and shown in Figure 6, solenoid directional control valve 222 is connected with receiver of remote-control sytem 22b in being located at through beam 202 by cable 22a, receiver of remote-control sytem 22b can receive the Kai Heguan of the remote signal of a remote control transmitter 22c with control solenoid directional control valve 222, through beam 202 also is provided with a storage battery device 22d and is connected with receiver of remote-control sytem 22b, is used for receptor is powered.
Also can comprise an adjustable throttling 223 in the rod chamber regulating control loop 220, be located on the pipeline of first hydraulic pipe 221, be controlled in order to cylinder rod chamber 210a is advanced the oil-out flow.
Among first embodiment as shown in Figure 5, rodless cavity regulating control loop 230a can only comprise one not only can be fuel-displaced, but also can oil-absorbing flow control circuit 231, this flow control circuit comprises the flow-controlling gate 233 on second hydraulic fluid port and second hydraulic pipe 232 between the fuel tank that is connected in oil cylinder and the pipeline of being located at this second hydraulic pipe 232.In the present embodiment, adjustable throttling is adopted in flow-controlling gate 233.Like this, when second hydraulic fluid port, the 217 turnover oil of oil cylinder 210, all can regulate its flow, reach the purpose of piston rod 212 moving velocitys of control oil cylinder by flow regulating valve 233.
Among second embodiment as shown in Figure 7, adopt and the consistent structure of first embodiment shown in Figure 5 in rod chamber regulating control loop 220, rodless cavity regulating control loop 230b is then different, can comprise oil return line 234 and oil suction loop 235, and fuel-displaced and suction passage are separated.Wherein go out oil return line 234 and comprise fuel-displaced hydraulic pipe 236 and uniaxial pressure control element 237, fuel-displaced hydraulic pipe 236 is connected between second hydraulic fluid port 217 and fuel tank 21 of oil cylinder 210, uniaxial pressure control element 237 forwards are located on the pipeline of fuel-displaced hydraulic pipe 235, make the fluid only can be from second hydraulic fluid port 217 to fuel tank 21 nonreturn floies.Uniaxial pressure control element 237 can adopt hydraulic control one-way valve, balance cock etc., adopt the fluid-control one-way valve arrangement of plug-in mounting in the present embodiment, promptly adopt one to have the hydraulic control one-way valve 238 of controlling hydraulic fluid port, forward is installed on the pipeline of fuel-displaced hydraulic pipe 235, the control hydraulic fluid port C of hydraulic control one-way valve 238 links to each other with oil outlet B, forms control oil channel, and control oil channel is provided with control cock 238a, in order to the flow of control oil channel, to regulate the spool pressure of hydraulic control one-way valve 238.
235 in oil suction loop comprises oil suction hydraulic pipe 239 and one-way flow control element, oil suction hydraulic pipe 239 is connected between second hydraulic fluid port 217 and fuel tank 21 of oil cylinder 210, the one-way flow control element is located on the pipeline of oil suction hydraulic pipe 239, makes the fluid only can be from fuel tank 21 to second hydraulic fluid ports 217 nonreturn floies.In the present embodiment, the one-way flow control element that employing is made of flow regulating valve 241 and check valve 242, check valve oppositely is located on the pipeline of oil suction hydraulic pipe 239, the cleanliness level of hydraulic oil in the oil cylinder preferably was provided with oil suction filter 243 during simultaneously for assurance grab bucket work before the check valve on the oil suction loop 235 242.
As shown in Figure 8 among the 3rd embodiment, adopt and the consistent structure of first embodiment shown in Figure 5 in rod chamber regulating control loop 220, and the oil suction loop 235 among the rodless cavity regulating control loop 230c is consistent with structure among second embodiment shown in Figure 7, include oil suction hydraulic pipe 239, flow regulating valve 241, check valve 242 and oil suction filter 243, different is oil return line 234 to adopt flow control, specifically, in the 3rd embodiment shown in Figure 8, go out oil return line 234 and adopt the one-way flow control elements to substitute the uniaxial pressure control element, this one-way flow control element comprises that forward is installed in check valve 245 on the pipeline of oil suction hydraulic pipe 239 and coupled flow regulating valve 246.Yet in the 4th embodiment shown in Figure 9, also flow regulating valve 246 can be replaced with the one-way throttle valve 247 of reverse installation, and oil suction loop 235 also is connected the outlet of one-way throttle valve 247, when oil suction, one-way throttle valve 247 conductings are as check valve, when fuel-displaced, one-way throttle valve 247 closures are as flow regulating valve.
In Fig. 5～four embodiment shown in Figure 9, airfilter 248 also is set on the fuel tank 21, to guarantee fuel tank 21 inner fluids cleaning, the interior oil pressure of fuel tank is equated all the time with atmosphere, make piston move down resistance and drop to minimum.
Below be the workflow of the opening-closing control mechanism of example explanation single rope grab of the present invention with second embodiment:
At initial period, grab bucket is in open mode, as shown in figure 10.When grab bucket is put on the stockpile when preparing to grasp material, crane hook descends, through hole 213a on the piston of oil cylinder 210 is by thimble 215 sealings of cylinder bottom at this moment, the rod chamber of oil cylinder is communicated with rodless cavity, oil cylinder is withdrawn under slip base 205 deadweight effects, as shown in figure 11, the hydraulic oil of oil cylinder rodless cavity 210b, a part can flow in the rod chamber 210a by through hole 213a and four check valves 214, another part flows back to fuel tank 21 by going out oil return line 234 with second hydraulic fluid port, 217 bonded assemblys, and the fluid in the fuel tank 21 can flow into first hydraulic fluid port 216 by rod chamber regulating control loop 220, perforation 215a through thimble 215 flows into oil cylinder rodless cavity 210b, and the through hole 213a on piston enters cylinder rod chamber 210a again.Adjust the spool pressure of hydraulic control one-way valve 237 oil return line on by control cock 238 this moment, and by regulating the flow regulating valve 223 on the rod chamber regulating control loop 220, get final product the speed that control plunger bar 212 moves down, and reduces to impact.After treating that oil cylinder 210 shrinks, can spur steel rope, closed grab bucket, as shown in figure 12.
When material and fully loaded when mobile is grasped in grab bucket, the piston rod 212 of oil cylinder 210 shrinks fully, solenoid directional control valve 222 cuts out, thimble 215 tight connections of through hole 213a on the piston and cylinder body 211 bottoms, the rod chamber and the rodless cavity of oil cylinder 210 are obstructed, piston rod 212 can not be pulled out, and grab bucket can not opened.Because the rod chamber 210a of left and right two oil cylinders 210 is communicated with, this just guarantees that the suffered pressure of two oil cylinders 210 is identical.If an oil cylinder lost efficacy, another oil cylinder lost efficacy equally, so just can not cause other framing member in oil cylinder 210 and the grab bucket to damage under the situation that single oil cylinder lost efficacy.
When needs are opened the grab bucket discharging, press remote control transmitter 22c, receiver of remote-control sytem 22b received signal also passes to solenoid directional control valve 222 by cable 22a, solenoid directional control valve 222 is opened, oil cylinder 210 rod chambers are by 220 off-loads of rod chamber regulating control loop, and the rod chamber of oil cylinder 210 is communicated with rodless cavity, and piston rod 212 is protruding, grab bucket is opened gradually, gets back to state shown in Figure 10.At the initial condition that piston rod 212 stretches out, thimble 215 still with piston 213 on through hole 213a tight connection because solenoid directional control valve 222 latus rectums are very little,, do not have and impact so the grab bucket opening speed is slow.The rodless cavity of oil cylinder 210 communicates with fuel tank 21, and grab bucket is when opening, the oil in the fuel tank 21 can be through the oil suction loop the 235 rodless cavity 210b that replenish the oil-feed cylinders.
In first embodiment, the 3rd embodiment and the 4th embodiment, the control flow of opening-closing control mechanism and second embodiment are similar, therefore repeat no more.
Though in an embodiment of the present invention, adopt flow regulating valve to control the fuel-displaced and/or oil-absorbing speed of oil cylinder, yet it will be appreciated by those skilled in the art that, under design of the present invention, these flow regulating valve can replace with the less pipeline of latus rectum, form nonadjustable throttle point, these embodiment should be within the scope that the present invention is contained.
Though the opening-closing control mechanism of single rope grab of the present invention is applied to adopt in the grab bucket of two oil cylinders, but the quantity of oil cylinder is not construed as limiting, this opening-closing control mechanism still can be used for single oil cylinder in the past and adopts in the grab bucket of guided way, and adopts in other grab buckets of heavy wool cylinder more.
Above embodiment explanation only is preferred embodiment explanation of the present invention, and those skilled in the art can make the replacement and the modification of other all equivalence according to the above embodiment of the present invention explanation.Yet these all equivalences of doing according to the embodiment of the invention are replaced and are revised, and belong to invention spirit of the present invention and reach by in the claim that claim defined.
Claims (17)
1. the opening-closing control mechanism of single rope grab, this single rope grab comprises bucket body, through beam, strut, deck beam and slip base; Be provided with pulley in the slip base, this pulley is connected as a single entity by steel rope and the fixed pulley that hangs on deck beam; Bucket body is connected with through beam, and strut one end connects bucket body, and the other end is connected with deck beam, and this opening-closing control mechanism is used to control the unlatching and the closure of single rope grab, it is characterized in that comprising:
Two oil cylinders, each oil cylinder comprises cylinder body, piston rod and piston, and described cylinder body is located on the through beam, and described piston rod protrudes upward with described slip base and is connected, and the piston center is provided with the rod chamber of connection cylinder body and the through hole of rodless cavity; The cylinder base correspondence is provided with can insert the thimble that blocks described through hole, and the thimble center is provided with perforation; Cylinder base also is provided with first hydraulic fluid port and second hydraulic fluid port, and described first hydraulic fluid port communicates with described perforation, and described second hydraulic fluid port communicates with the rodless cavity of oil cylinder; Each oil cylinder also comprises one group of check valve that is used for unidirectional conducting rodless cavity to the fluid of rod chamber, is located on the described piston or is located on the pipeline of exterior connection rod chamber of oil cylinder and rodless cavity;
Rod chamber regulating control loop, comprise first hydraulic pipe and change-over valve, described hydraulic pipe is connected between first hydraulic fluid port and fuel tank of oil cylinder, described change-over valve is located on first hydraulic pipe, be used to control the conducting direction of fluid between first hydraulic fluid port and fuel tank, when described piston rises, by commutation make fluid from first hydraulic fluid port to the fuel tank nonreturn flow;
Rodless cavity regulating control loop, be connected between second hydraulic fluid port and described fuel tank of oil cylinder, in order to regulate the second hydraulic fluid port oil-out back pressure and oil-absorbing speed, this rodless cavity regulating control loop comprises a flow regulating loop, and described flow control circuit comprises second hydraulic fluid port and second hydraulic pipe between the fuel tank and the flow regulating valve of being located on described second hydraulic pipe that is connected in oil cylinder.
2. the opening-closing control mechanism of single rope grab as claimed in claim 1 is characterized in that, described rod chamber regulating control loop also comprises the flow regulating valve of being located on described first hydraulic pipe.
3. the opening-closing control mechanism of single rope grab as claimed in claim 1 is characterized in that, described change-over valve is a solenoid directional control valve.
4. the opening-closing control mechanism of single rope grab as claimed in claim 1 is characterized in that, also comprises airfilter, is connected with described fuel tank.
5. the opening-closing control mechanism of single rope grab, this single rope grab comprises bucket body, through beam, strut, deck beam and slip base; Be provided with pulley in the slip base, this pulley is connected as a single entity by steel rope and the fixed pulley that hangs on deck beam; Bucket body is connected with through beam, and strut one end connects bucket body, and the other end is connected with deck beam, and this opening-closing control mechanism is used to control the unlatching and the closure of single rope grab, it is characterized in that comprising:
Two oil cylinders, each oil cylinder comprises cylinder body, piston rod and piston, and described cylinder body is located on the through beam, and described piston rod protrudes upward with described slip base and is connected, and the piston center is provided with the rod chamber of connection cylinder body and the through hole of rodless cavity; The cylinder base correspondence is provided with can insert the thimble that blocks described through hole, and the thimble center is provided with perforation; Cylinder base also is provided with first hydraulic fluid port and second hydraulic fluid port, and described first hydraulic fluid port communicates with described perforation, and described second hydraulic fluid port communicates with the rodless cavity of oil cylinder; Each oil cylinder also comprises one group of check valve that is used for unidirectional conducting rodless cavity to the fluid of rod chamber, is located on the described piston or is located on the pipeline of exterior connection rod chamber of oil cylinder and rodless cavity;
Rod chamber regulating control loop, comprise first hydraulic pipe and change-over valve, described hydraulic pipe is connected between first hydraulic fluid port and fuel tank of oil cylinder, described change-over valve is located on first hydraulic pipe, be used to control the conducting direction of fluid between first hydraulic fluid port and fuel tank, when described piston rises, by commutation make fluid from first hydraulic fluid port to the fuel tank nonreturn flow;
Rodless cavity regulating control loop is connected between second hydraulic fluid port and described fuel tank of oil cylinder, and in order to regulate the second hydraulic fluid port oil-out back pressure and oil-absorbing speed, described rodless cavity regulating control loop comprises oil return line and oil suction loop;
Describedly go out oil return line and comprise fuel-displaced hydraulic pipe and uniaxial pressure control element, described fuel-displaced hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described uniaxial pressure control element is located on the described fuel-displaced hydraulic pipe, make fluid from second hydraulic fluid port to the fuel tank nonreturn flow;
Described oil suction loop comprises oil suction hydraulic pipe and one-way flow control element, described oil suction hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described oil suction hydraulic pipe, makes fluid from fuel tank to the second hydraulic fluid port nonreturn flow.
6. the opening-closing control mechanism of single rope grab as claimed in claim 5 is characterized in that, described rod chamber regulating control loop also comprises the flow regulating valve of being located on described first hydraulic pipe.
7. the opening-closing control mechanism of single rope grab as claimed in claim 5 is characterized in that, described change-over valve is a solenoid directional control valve.
8. the opening-closing control mechanism of single rope grab as claimed in claim 5, it is characterized in that, described uniaxial pressure control element comprises hydraulic control one-way valve and is located at control cock on the control oil channel of described hydraulic control one-way valve that described hydraulic control one-way valve is to be located on the described fuel-displaced hydraulic pipe from second hydraulic fluid port to the direction of fuel tank.
9. the opening-closing control mechanism of single rope grab as claimed in claim 5 is characterized in that, described one-way flow control element comprises flow regulating valve and check valve.
10. the opening-closing control mechanism of single rope grab as claimed in claim 5 is characterized in that, described oil suction loop also comprises the oil suction filter, is located on the oil suction hydraulic pressure pipeline section between fuel tank and the one-way flow control element.
11. the opening-closing control mechanism of single rope grab as claimed in claim 5 is characterized in that, also comprises airfilter, is connected with described fuel tank.
12. the opening-closing control mechanism of single rope grab, this single rope grab comprises bucket body, through beam, strut, deck beam and slip base; Be provided with pulley in the slip base, this pulley is connected as a single entity by steel rope and the fixed pulley that hangs on deck beam; Bucket body is connected with through beam, and strut one end connects bucket body, and the other end is connected with deck beam, and this opening-closing control mechanism is used to control the unlatching and the closure of single rope grab, it is characterized in that comprising:
Two oil cylinders, each oil cylinder comprises cylinder body, piston rod and piston, and described cylinder body is located on the through beam, and described piston rod protrudes upward with described slip base and is connected, and the piston center is provided with the rod chamber of connection cylinder body and the through hole of rodless cavity; The cylinder base correspondence is provided with can insert the thimble that blocks described through hole, and the thimble center is provided with perforation; Cylinder base also is provided with first hydraulic fluid port and second hydraulic fluid port, and described first hydraulic fluid port communicates with described perforation, and described second hydraulic fluid port communicates with the rodless cavity of oil cylinder; Each oil cylinder also comprises one group of check valve that is used for unidirectional conducting rodless cavity to the fluid of rod chamber, is located on the described piston or is located on the pipeline of exterior connection rod chamber of oil cylinder and rodless cavity;
Rod chamber regulating control loop, comprise first hydraulic pipe and change-over valve, described hydraulic pipe is connected between first hydraulic fluid port and fuel tank of oil cylinder, described change-over valve is located on first hydraulic pipe, be used to control the conducting direction of fluid between first hydraulic fluid port and fuel tank, when described piston rises, by commutation make fluid from first hydraulic fluid port to the fuel tank nonreturn flow;
Rodless cavity regulating control loop is connected between second hydraulic fluid port and described fuel tank of oil cylinder, and in order to regulate the second hydraulic fluid port oil-out back pressure and oil-absorbing speed, described rodless cavity regulating control loop comprises oil return line and oil suction loop;
Describedly go out oil return line and comprise fuel-displaced hydraulic pipe and one-way flow control element, described fuel-displaced hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described fuel-displaced hydraulic pipe, make fluid from second hydraulic fluid port to the fuel tank nonreturn flow;
Described oil suction loop comprises oil suction hydraulic pipe and one-way flow control element, described oil suction hydraulic pipe is connected between second hydraulic fluid port and fuel tank of oil cylinder, described one-way flow control element is located on the described oil suction hydraulic pipe, makes fluid from fuel tank to the second hydraulic fluid port nonreturn flow.
13. the opening-closing control mechanism of single rope grab as claimed in claim 12 is characterized in that, described rod chamber regulating control loop also comprises the flow regulating valve of being located on described first hydraulic pipe.
14. the opening-closing control mechanism of single rope grab as claimed in claim 12 is characterized in that, described change-over valve is a solenoid directional control valve.
15. the opening-closing control mechanism of single rope grab as claimed in claim 12 is characterized in that, described one-way flow control element comprises flow regulating valve and check valve.
16. the opening-closing control mechanism of single rope grab as claimed in claim 12 is characterized in that, described oil suction loop also comprises the oil suction filter, is located on the oil suction hydraulic pressure pipeline section between fuel tank and the one-way flow control element.
17. the opening-closing control mechanism of single rope grab as claimed in claim 12 is characterized in that, also comprises airfilter, is connected with described fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100274897A CN100572255C (en) | 2006-06-09 | 2006-06-09 | The opening-closing control mechanism of single rope grab |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100274897A CN100572255C (en) | 2006-06-09 | 2006-06-09 | The opening-closing control mechanism of single rope grab |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101085667A CN101085667A (en) | 2007-12-12 |
| CN100572255C true CN100572255C (en) | 2009-12-23 |
Family
ID=38936872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100274897A Expired - Fee Related CN100572255C (en) | 2006-06-09 | 2006-06-09 | The opening-closing control mechanism of single rope grab |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100572255C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927961A (en) * | 2010-09-10 | 2010-12-29 | 上海电气液压气动有限公司 | Two-valve grab hydraulic control system protection device |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665214B (en) * | 2009-09-14 | 2011-09-21 | 上海昂丰矿机科技有限公司 | Electric hydraulic bucket with delayed unloading function |
| CN101811642B (en) * | 2010-04-13 | 2011-11-02 | 上海昂丰矿机科技有限公司 | Electro-hydraulic grab with electromagnetic cartridge valve control structure |
| CN101927952B (en) * | 2010-09-10 | 2012-02-29 | 上海电气液压气动有限公司 | Hydraulic control system with multisegment grab |
| CN101927954B (en) * | 2010-09-10 | 2012-06-20 | 上海电气液压气动有限公司 | Hydraulic control system of bivalve grab bucket |
| CN103352879A (en) * | 2013-06-28 | 2013-10-16 | 安庆市华鑫重工有限公司 | Hydraulic lock system for realizing remote control on opening and closing of single-rope grab bucket |
| CN104291214A (en) * | 2014-08-26 | 2015-01-21 | 上海港怡动力系统有限公司 | Remote control grab bucket capable of discharging in stable mode |
| CN117430012B (en) * | 2023-12-12 | 2024-03-29 | 天津港股份有限公司 | Unmanned portal crane |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473123A (en) * | 1973-07-31 | 1977-05-11 | ||
| US4253692A (en) * | 1978-12-26 | 1981-03-03 | Garlinghouse Roland E | Control system for material placement buckets |
-
2006
- 2006-06-09 CN CNB2006100274897A patent/CN100572255C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1473123A (en) * | 1973-07-31 | 1977-05-11 | ||
| US4253692A (en) * | 1978-12-26 | 1981-03-03 | Garlinghouse Roland E | Control system for material placement buckets |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101927961A (en) * | 2010-09-10 | 2010-12-29 | 上海电气液压气动有限公司 | Two-valve grab hydraulic control system protection device |
| CN101927961B (en) * | 2010-09-10 | 2012-02-29 | 上海电气液压气动有限公司 | Two-valve grab hydraulic control system protection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101085667A (en) | 2007-12-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100572255C (en) | The opening-closing control mechanism of single rope grab | |
| CN104477798B (en) | The principal arm luffing control system of crane and crane | |
| CN102874704B (en) | Hydraulic system, hoisting mechanism and engineering machinery | |
| JP4885223B2 (en) | Control device and control method for piston / cylinder mechanism | |
| CN201560992U (en) | Pilot-operated hydraulic lock multi-way directional valve set | |
| CN202322125U (en) | Hydraulic control system with adjustable amplitude for articulated lifting device | |
| CN101680206B (en) | Hydraulic load control valve device | |
| CN101736729A (en) | Lifting mechanism of free dropping type forced ramming machine with hammer | |
| CN100360813C (en) | Integrated electro-hydraulic actuator capable of carrying out quick action and adjustment | |
| CN202322003U (en) | Novel single-rope wireless remote control orange-peel bucket | |
| CN106678096B (en) | A kind of overhead working truck leveling system | |
| CN105240577A (en) | Remote measurement and control flow dividing valve and flow dividing controller | |
| CN101307785B (en) | Ultra-high hydraulic lifting valve group for double-acting hydraulic oil cylinder | |
| CN102748506B (en) | Electro-hydraulic pilot control switch valve bank | |
| CN112173994B (en) | Control valve unit, hydraulic control loop and engineering equipment with telescopic crane boom | |
| CN101446307B (en) | Mechanical feedback plug-in mounting type proportional throttle valve system | |
| CN200967709Y (en) | On-off control mechanism for single-rope bucket grab | |
| CN102502434A (en) | Luffing hydraulic controlling system of joint lift | |
| CN207497967U (en) | A kind of new type of safe is met an urgent need liquid braking device | |
| JP2582171B2 (en) | Concrete bucket gate opening and closing device | |
| CN201109697Y (en) | Emergency descending hydraulic equipment for lifting platform | |
| CN202625624U (en) | Hydraulic control system of single-cable remote control grab bucket with overload protection | |
| CN209510270U (en) | A kind of twin-tub cylinder hydraulic pressure pipe slips | |
| CN209510757U (en) | A kind of hydraulic pressure pipe slips hydraulic control integrated package | |
| CN219081959U (en) | Swing arm anti-sedimentation structure of excavator load-sensitive multi-way valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI QIFAN MACHINERY CO., LTD. Free format text: FORMER OWNER: SHANGHAI QIFAN TECHNOLOGY CO., LTD. Effective date: 20120903 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200025 LUWAN, SHANGHAI TO: 200080 HONGKOU, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120903 Address after: 200080 Shanghai City No. 1717 North Sichuan Road Jiajie International Plaza Room 1903 Patentee after: Shanghai Qifan Machinery Co., Ltd. Address before: 200025 Shanghai No. 550 Xujiahui Road, building 25 floor Baoding Patentee before: Shanghai Qifan Technology Co., Ltd. |
|
| DD01 | Delivery of document by public notice |
Addressee: Sun Maokang Document name: Notification of Passing Examination on Formalities |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091223 Termination date: 20150609 |
|
| EXPY | Termination of patent right or utility model |