A kind of quick change adapter connector with double lock mechanism
Technical field
The utility model relates to a kind of quick change adapter connector with double lock mechanism, belongs to engineering machinery field, particularly relates to a kind of quick connector of excavator accessory.
Background technology
At present, quick change adapter connector is applied in engineering machinery field comparatively widely, greatly facilitates the quick connection between engineering machinery accessory and disengaging.Can realize carrying out quick-replaceable connection from the tool heads of the different purposes such as hydraulic shear, hydraulic rammer, hydraulic hammer, bucket, make main frame reach one-machine-multi-function, substantially increase the surcharge of main frame, job area expands, and improves working environment, reduces labor intensity.Therefore, the use of quick change adapter connector will make main frame more effectively with flexible.Existing multiple quick change adapter connector on market, be mainly divided into mechanical type and fluid pressure type, the quick change adapter connector of mechanical structure needs people manually to insert safety pin, and inefficiency, exists potential safety hazard; The quick change adapter connector of fluid pressure type structure can change accessory by hydraulic coupling, but when hydraulic system fails, accessory likely drops, and easily security incident occurs.
(application number: the quick-changing work device 201120011312.4) disclosing a kind of excavator, this patent, when changing accessory, provides a kind of safety precautions, need adopt and manually insert safety pin, prevent the case accident of accessory patent.But when changing accessory, need first manually to remove safety pin, make accessory be separated, can not realize automatically changing accessory, and this device is under the environment of bad environments, operation inconvenience, efficiency is low.Patent (application number: 2011201715963.7) disclose a kind of quick-change connector of excavator; this joint is mainly by the rotation of the left clamp of extension and contraction control of oil cylinder; change accessory; left clamp and right clamp two ends all do not have mechanical interlocking protective device; the defect of this hydraulic quick coupler is; hydraulic system fails can cause cylinder piston rod to be retracted in cylinder barrel, and left clamp can move to open position from make position thus, and executing agency is come off from fast replacing device.Patent (application number: 200920164974.8) disclose a kind of hydraulic quick-change device for working device accessory of hydraulic excavator, this device only at one end dead bolt place add Compress Spring, prevent hydraulic failure from meeting accident, but do not take any safety device at the other end, the function of monolock can only be realized, can not two ends bearing pins twin-lock simultaneously, there is certain potential safety hazard.
Utility model content
Problem to be solved in the utility model is to provide a kind of quick change adapter connector with double lock mechanism, this connector does not need operator to walk out driver's cabin, just can fast automatic replacing accessory, decrease the labour intensity of operator, and the function of maltilevel security lock simultaneously can also be realized, can ensure that accessory all can not accidental under any state, there is the features such as efficiency is high, safe and reliable, simple to operate, easy to use.
A kind of quick change adapter connector with double lock mechanism of the utility model, it comprises link, spiral oscillating oil cylinder, lower link, and it also comprises the front retaining mechanism be arranged in lower frame linking, rear retaining mechanism.
Wherein, kayser, one-way cylinder, quick change dead bolt, guide rod and hydraulic jack after rear retaining mechanism comprises two; Quick change dead bolt is " recessed " shape, behind two, left and right, kayser is in the outside of the quick change dead bolt left and right sides respectively, and the cylinder portion of one-way cylinder is in quick change dead bolt groove, and is connected with quick change dead bolt by bearing pin, its bar portion be arranged on left and right two after kayser front portion between, three passes through pinned connection; Guide rod is arranged on the side of quick change dead bolt; The front cylinder portion of hydraulic jack is connected by the left side plate of bearing pin with lower link, and rear rod portion stretches in the groove of quick change dead bolt, and the rear rod portion of guide rod, hydraulic jack and quick change dead bolt are by same pinned connection.Front retaining mechanism comprises two cover hold-down mechanisms, two front kaysers; Left and right two cover hold-down mechanism is all connected with the left side plate of lower link respectively by spring stop bolt, and hold-down mechanism comprises spring, spring shim, spring catch, and spring catch is fastened on the bottom of spring stop through spring; The middle part of two the front kaysers in left and right is all connected with the head of left and right spring catch respectively by bolt, and it is anterior in aggregates by pinned connection, and rear portion is connected with the left side plate of lower link respectively by bearing pin.
The utility model quick change adapter connector, when changing accessory, is first shunk by the gauge tap hydraulic control oil cylinder of driver's cabin, and while hydraulic jack shrinks, one-way cylinder stretches out, thus after driving, kayser shrinks; Quick change dead bolt is driven to open (being rotated counterclockwise) while hydraulic jack shrinks, with belong to tool one end bearing pin originally and throw off, quick change dead bolt rotarily drives guide rod motion (anteriorly moving), guide rod moves to certain position, its leading section contacts with front kayser, when the pressure energy that hydraulic jack produces overcomes the thrust of spring generation, namely front kayser is forced front kayser to rotate counterclockwise open by guide rod jack-up and separate with the other end bearing pin belonging to tool originally, now moves quick change adapter connector and unloads original accessory.When more renewing accessory, the lower link controlling quick change adapter connector entangles the bearing pin of new accessory one end, move the bearing pin that quick change adapter connector blocks the new accessory other end again, then hydraulic control oil cylinder stretches out, along with stretching out of hydraulic jack, guide rod leaves front kayser, and front kayser blocks the bearing pin of new accessory one end under the action of the spring; Hydraulic jack stretches out and the rotation of quick change dead bolt can be driven to block accessory bearing pin, and one-way cylinder resets under spring force, and after driving, kayser stretches out, and encases bearing pin, completes the locked of bearing pin, thus locked by new accessory.
Therefore the utility model can quick-replaceable accessory, reduce working strength, improve operating efficiency, and the function of maltilevel security locking can also be realized, the security incident that can prevent from the inefficacy because of hydraulic system from making accessory accidental causing, improves the security reliability of connector.
Accompanying drawing explanation
Fig. 1 is the front view of the quick change adapter connector of the utility model double lock mechanism;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the top view (in removal link and spiral oscillating oil cylinder) of Fig. 2;
Fig. 4 is the schematic diagram of this novel front and back retaining mechanism when opening;
Fig. 5 is the schematic diagram of this novel front and back retaining mechanism when closing;
Fig. 6 is the schematic diagram (removal hydraulic jack) of this novel front and back retaining mechanism;
Fig. 7 is the schematic diagram (removal hydraulic jack) of rear retaining mechanism;
Fig. 8 is the rear elevation of Fig. 7.
specific implementation method
From accompanying drawing, a kind of quick change adapter connector with double lock mechanism of the utility model, it comprises link 1, spiral oscillating oil cylinder 2, lower link 3, and it also comprises and is arranged on the front retaining mechanism in lower frame linking 3, rear retaining mechanism.Wherein, spiral oscillating oil cylinder 2 is arranged between link 1 and lower link 3, can realize ± the deflection of 90 °, to have a down dip operation in some special operating modes to meet; Two pin shaft holes of upper link 1 can be connected with the front end of working arm of excavating machine by bearing pin.
Wherein, kayser 8, one-way cylinder 9, quick change dead bolt 10, guide rod 7 and hydraulic jack 5 after rear retaining mechanism comprises two; Quick change dead bolt 10 is " recessed " shape, behind two, left and right, kayser 8 is in the outside of quick change dead bolt 10 left and right sides respectively, the cylinder portion of one-way cylinder 9 is in quick change dead bolt 10 groove, and be connected with quick change dead bolt 10 by bearing pin, its bar portion be arranged on left and right two after kayser 8 front portion between, three passes through pinned connection; Guide rod 7 is arranged on the side of quick change dead bolt 10; The front cylinder portion of hydraulic jack 5 is connected by the left side plate of bearing pin with lower link 3, and rear rod portion stretches in the groove of quick change dead bolt 10, and the rear rod portion of guide rod 7, hydraulic jack 5 and quick change dead bolt 10 are by same pinned connection.
Front retaining mechanism comprises two cover hold-down mechanisms, two front kaysers 6; Left and right two cover hold-down mechanism is all connected with the left side plate of lower link 3 respectively by spring stop 13 bolt, and hold-down mechanism comprises spring 4, spring shim 14, spring catch 15, and spring catch 15 is fastened on the bottom of spring stop 13 through spring 4; The middle part of two the front kaysers 6 in left and right is all connected with the head of left and right spring catch 15 respectively by bolt, and it is anterior in aggregates by pinned connection, and rear portion is connected with the left side plate of lower link 3 respectively by bearing pin.
In order to ensure the work of rear retaining mechanism better, locking function is affected after preventing guide rod 7 from dropping, as a kind of improved procedure of the present utility model, rear retaining mechanism also comprises guide rod block 16, and guide rod block 16 is welded on below the side plate of the lower link 3 of guide rod 7.
In order to ensure the reliable movement of kayser behind two, left and right better, as a kind of improved procedure of the present utility model, there is sliding tray the left and right sides of quick change dead bolt 10, and behind two, left and right, kayser 8 matches with the sliding tray of quick change dead bolt 10 respectively.Depart from from the sliding tray of quick change dead bolt 10 when travelling forward to prevent rear kayser 8, behind two, left and right, the rear portion of kayser 8 is respectively arranged with a stop screw, when rear kayser 8 moves forward to certain distance, stop screw can be encountered after quick change dead bolt 10, thus makes rear kayser no longer travel forward and prevent it from coming off from sliding tray.
Wherein, hydraulic jack 5 is integrated with hydraulic control one-way valve, and before and after it, chamber is connected with host hydraulic system oil circuit by hydraulic hose.Like this, by the break-make of gauge tap hydraulic control oil circuit, to realize the flexible of hydraulic jack 5, thus quick change dead bolt 10 is blocked or unclamps the bearing pin 11,12 of accessory device.
The utility model quick change adapter connector, when changing accessory, is first shunk by the gauge tap hydraulic control oil cylinder 5 of driver's cabin, and while hydraulic jack 5 shrinks, one-way cylinder 9 stretches out, thus after driving, kayser 8 shrinks; Quick change dead bolt 10 is driven to open (being rotated counterclockwise) while hydraulic jack 5 shrinks, with belong to tool one end bearing pin originally and throw off, quick change dead bolt 10 rotarily drives guide rod 7 and moves (anteriorly moving), guide rod 7 moves to certain position, its leading section contacts with front kayser 6, when the pressure energy that hydraulic jack 5 produces overcomes the thrust of spring 4 generation, namely front kayser 6 is forced front kayser 6 to rotate counterclockwise the other end bearing pin opened with belonging to tool originally by guide rod 7 jack-up to separate, now move quick change adapter connector and unload original accessory.When more renewing accessory, the lower link controlling quick change adapter connector entangles the bearing pin 11 of new accessory one end, move the bearing pin 12 that quick change adapter connector blocks the new accessory other end again, as shown in Figure 2, then hydraulic control oil cylinder 5 stretches out, along with stretching out of hydraulic jack 5, guide rod 7 leaves front kayser 6, and front kayser 6 blocks the bearing pin 11 of new accessory one end under the effect of spring 4; Hydraulic jack 5 stretches out and quick change dead bolt 10 rotation can be driven to block accessory bearing pin 12, and one-way cylinder 9 resets under spring force, and after driving, kayser 8 stretches out, and encases bearing pin 12, completes the locked of bearing pin 12, as shown in Figure 3, thus locked by new accessory.
Be by operating hydraulically operated oil cylinder, locking and the expansion action of quick change dead bolt can be realized; The hydraulic control one-way valve that hydraulic jack is integrated with can realize the locking of hydraulic jack
From above, operating principle of the present utility model: by the rotation of the flexible drive quick change dead bolt of operating hydraulically operated oil cylinder, the unclamping and lock of kayser before the rotation of quick change dead bolt drives guide rod motion to carry out accessory, rear kayser controls to lock by one-way cylinder; The hydraulic control one-way valve that hydraulic jack is integrated with can realize the locking of hydraulic jack.Therefore the safeguard protection effect with front and back Double-clip lock of the utility model quick change adapter connector; even if when hydraulic system fails; front and back retaining mechanism also can block the bearing pin of accessory; ensure that the safety of whole quick change adapter connector; can prevent the inefficacy because of hydraulic system from causing the generation of accessory accidental accident, improve the safety of quick change adapter connector.
The utility model quick change adapter connector can realize replacing equipment easily and fast, reduce working strength, improve operating efficiency during construction, and the locking function realized accessory, the security incident that can prevent from the inefficacy because of hydraulic system from making accessory accidental causing, improves the security reliability of connector.