CN109750708B - Quick adapter for excavator - Google Patents
Quick adapter for excavator Download PDFInfo
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- CN109750708B CN109750708B CN201910231134.7A CN201910231134A CN109750708B CN 109750708 B CN109750708 B CN 109750708B CN 201910231134 A CN201910231134 A CN 201910231134A CN 109750708 B CN109750708 B CN 109750708B
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Abstract
The invention discloses a quick adapter for an excavator, and belongs to the technical field of engineering machinery. The device comprises a conversion connector frame body, a left hook and a right hook, wherein a small arm mounting hole assembled with a small arm of an excavator is formed in the top of the conversion connector frame body, the left hook is a fixed hook, the right hook is a movable hook, the conversion connector frame body clamps a bucket mounting shaft of a bucket connecting seat through the fixed hook and the movable hook, the movable hook consists of the right hook, a swing arm and a rib plate, the movable hook is fixed through a locking device, the locking device consists of a locking plate, a connecting rod arm and a swing control device, the swing control device is a manual control device or an electric control device, the swing control device controls the swing of the locking plate, and when the locking plate returns, the device limits the swing arm of the movable hook to enable the swing arm of the movable hook to be incapable of moving, so that the clamping is realized, and the swing arm is controlled to swing, so that the swing arm can swing, and the movable hook can be quickly disassembled.
Description
Technical Field
The invention relates to a quick adapter for an excavator, and belongs to the technical field of engineering machinery.
Background
In order to expand the application range of the excavator, the connecting rod small arm of the excavator needs to be replaced by working accessories such as a bucket, a breaking hammer, a hydraulic shear and the like through a quick connector. Known quick connectors for excavators can be divided into hydraulic and mechanical ones;
the hydraulic joint has higher cost, the movable hook realizes the installation of the excavator bucket by controlling the extension and contraction of the hydraulic rod, and the movable hook also needs a plurality of seconds and is connected with the excavator liquid path system, so that the movable hook is easy to break down.
The structure of the existing mechanical quick adapter is complex, and the operation time is long and time is wasted. Patent number: CN201710298205.6 discloses an excavator quick connector, this connects needs manual work to rotate adjusting bolt, make the latch segment slide back and forth, and then adjust movable hook rotation, and then the tight bucket of hook, because the pitch of bolt is limited, want to adjust movable hook rotation angle and realize first card income bucket installation axle again tight installation axle, need repeated rotatory bolt can realize, and the latch segment passes through the spring jack, screw up a large amount of physical power can consume to the bolt, also can waste more time, make the actual operation effect not ideal, therefore, very need a novel excavator quick connector to solve above-mentioned problem, both cost is saved, realize the switching again fast.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the quick switching joint for the excavator, which has the advantages of simpler structure and low manufacturing cost, can realize the disassembly and the assembly of the excavator bucket in the moment, can be operated by a single hand, can realize remote operation by installing the electromagnetic push rod and the lifting electric cylinder, greatly shortens the time for switching the working accessory of the excavator, reduces the labor intensity of workers and improves the working efficiency of the workers.
The technical scheme adopted for solving the technical problems is as follows: the quick change-over connector for the excavator comprises a change-over connector frame body, a fixed hook and a movable hook, wherein a forearm installation hole assembled with a forearm of the excavator is formed in the top of the change-over connector frame body, a left hook and a right hook are arranged at the bottom of the change-over connector frame body, the left hook is the fixed hook, the right hook is the movable hook, the change-over connector frame body is used for clamping a bucket installation shaft of a bucket connecting seat through the fixed hook and the movable hook, and the movable hook is fixed through a locking device;
the front side plate and the rear side plate are fixedly connected through the left frame body connecting column and the right frame body connecting column, a fixed hook opening is formed in the left lower side of the front side plate and the rear side plate of the conversion connector frame body, the opening is a left hook with an opening facing to the left side, forearm mounting holes assembled with the forearm of the excavator are formed in the front side plate and the rear side plate, an excavator forearm mounting shaft is inserted into the forearm mounting holes, the middle rotating shaft is arranged in the middle between the front side plate and the rear side plate of the conversion connector frame body, and the lower rotating shaft is arranged in the right lower side between the front side plate and the rear side plate of the conversion connector frame body; a locking device is arranged on the middle rotating shaft, and a movable hook is arranged on the lower rotating shaft;
the movable hook consists of a right hook, a swing arm and a rib plate, wherein the right hook is positioned at the right lower part of the front side plate and the rear side plate of the conversion connector frame body, the top wall of the right hook is in contact with the bottom wall of the conversion connector frame body, the opening of the right hook faces to the right, the left end of the right hook is provided with the swing arm with the end part fixedly connected with the end part, the middle part of the swing arm is provided with a shaft sleeve hole, the swing arm is sleeved on the lower rotating shaft through the shaft sleeve hole, so that the right hook is connected with the conversion connector frame body, the swing arm is provided with the rib plate for increasing the connecting force with the right hook, and the upper side wall and the lower side wall of the swing arm are provided with the rib plate for increasing the torsion force of the swing arm;
the locking device consists of a locking plate, a connecting rod arm and a swing control device, wherein the locking plate is a plate body with a shaft sleeve hole at the top, and the locking plate is sleeved on the middle rotating shaft through the shaft sleeve hole so as to be connected with the adapter bracket body; the side wall of the top end of the lock plate is fixedly connected with a connecting rod arm, the bottom end of the lock plate is contacted with the rear end of the swing arm, the right end of the lock plate is provided with a stop block for stopping the forward swing of the lock plate, a pair of stop blocks are respectively fixed on the front side wall and the rear side wall of the conversion connector frame body, the conversion connector frame body is provided with a swing control device, and the swing control device is connected with the connecting rod arm of the lock plate and controls the swing of the connecting rod arm;
the swing control device is a manual control device or an electric control device, the manual control device consists of a pressure lever, clamping pieces and tension springs, the tension springs hinged with the connecting rod arms of the lock plates are arranged on the left connecting column of the frame body of the adapter frame body, the pressure levers extending rightward are arranged at the top ends of the lock plates, the clamping pieces capable of clamping the pressure levers after deformation are arranged on the swing arms, the pressure levers are pressed down to enable the front ends of the pressure levers to be positioned between the clamping pieces on the swing arms, and the clamping force of the clamping pieces can prevent the tension springs from lifting the pressure levers under the action of a lever principle; the lock plate swings clockwise through the pressure bar, so that the bottom end of the lock plate is separated from the rear end of the swing arm, the swing arm swings by taking the lower rotating shaft as the axis under the gravity of the right hook of the swing arm due to the fact that the rear end is free of the limit of the lock plate, the right hook rotates by taking the lower rotating shaft as the axis, the opening of the swing arm gradually faces downwards, the bucket swings by taking the left bucket mounting shaft as the axis, the right bucket mounting shaft swings clockwise by taking the left bucket mounting shaft as the axis, and the swing arm is separated from the right hook with the opening gradually downwards, so that the bucket is detached; when the swing arm swings clockwise, the clamping piece above the swing arm is gradually separated from the compression bar, and the locking plate returns to the original position under the action of the tension spring;
the electric control device consists of a telescopic electromagnetic valve and a connecting rod, wherein the telescopic electromagnetic valve is fixed on a left connecting column of the frame body of the adapter frame body, and the end part of a telescopic rod of the telescopic electromagnetic valve is hinged with a connecting rod arm of the locking plate through the connecting rod; the telescopic electromagnetic valve is connected with an inner circuit of the excavator through a wire, a switch of the telescopic electromagnetic valve is positioned in a cab of the excavator, the telescopic electromagnetic valve is controlled to extend out through the switch, the telescopic electromagnetic valve supports a connecting rod arm through a connecting rod, a lock plate swings clockwise by taking a middle rotating shaft as an axle center, the bottom end of the lock plate and the rear end of a swing arm are separated to realize unlocking, the switch is closed after the bucket is disassembled, the lock plate returns to a position under the action of the telescopic electromagnetic valve, the telescopic electromagnetic valve is a miniature electromagnetic valve, and the telescopic electromagnetic valve can be replaced by a telescopic electric cylinder with the same principle.
The upper part of the rear end of the swing arm is provided with a chamfer, the right side of the bottom end of the lock plate is provided with a chamfer, and when the bottom end of the lock plate locks the rear end of the swing arm, the lower edge line of the chamfer surface of the bottom end of the lock plate is contacted with the lower edge line of the chamfer surface of the swing arm;
when the swing arm is stressed by the right hook at the end part, the end face below the chamfer line at the rear end of the swing arm is contacted with the end face below the chamfer line at the bottom end of the lock plate, so that the contact face of the swing arm and the lock plate is meshed, namely, the lock plate needs to swing anticlockwise by taking the middle rotating shaft as the axle center, the lock plate cannot rotate by the stop block baffle post, the effect of locking the swing arm through the lock plate is achieved, the swing arm cannot swing clockwise, the top wall of the right hook is contacted with the bottom wall of the adapter frame body, the swing arm cannot swing anticlockwise, the opening of the right hook cannot change direction, and therefore the bucket installation shaft of the bucket is firmly clamped.
When the lock plate is required to be disassembled, the lock plate is enabled to swing clockwise through the manual control device or the electric control device, and as the contact part of the lock plate and the swing arm is provided with chamfers, when the lock plate swings clockwise, the chamfer inclined plane above the chamfer lower edge line of the bottom end of the lock plate is not contacted with the end face of the rear end of the swing arm, so that the swing can be easily realized, once the lock plate is unlocked, the quick-change connector frame body is lifted up again, the right side bucket mounting shaft directly drives the right side hook under the action of the self weight of the bucket, and as the swing arm does not have the fastening of the lock plate, the rear end of the lock plate can swing continuously and clockwise, the right side hook swings clockwise by taking the lower rotating shaft as the axis, and the opening of the right side hook gradually faces downwards, so that the right side bucket mounting shaft of the bucket falls off from the right side hook;
the right connecting column of the frame body can limit the swing amount of the swing arm, under the condition of unlocking the locking plate, when the swing arm swings under the dead weight of the right hook at the end part, the swing arm at the rear end of the swing arm is contacted with the right connecting column of the frame body, and when the swing arm is contacted with the right connecting column of the frame body, the distance from the axle center of the left hook to the top end of the opening of the right hook at the end part of the swing arm is the same as the distance between the two bucket installing shafts of the bucket.
When the excavator is required to be quickly installed, the excavator connecting seat of the excavator is upwards oriented, namely the two excavator installing shafts are positioned above the excavator, the small arm of the excavator provided with the quick change-over connector is controlled, the left hook of the change-over connector frame body is clamped on the left excavator installing shaft, the left excavator installing shaft is taken as the axis to downwards press the small arm of the excavator, the change-over connector frame body swings clockwise with the left excavator installing shaft as the axis, the right hook below the swing arm contacted with the right connecting column of the frame body of the change-over connector frame body is close to the right excavator installing shaft, the opening top end of the right hook is contacted with the top wall of the right excavator installing shaft to continue to move, the axis of the right hook is gradually overlapped with the axis of the right excavator installing shaft, the opening orientation of the right hook is gradually towards the right side until the top wall of the right hook contacts with the bottom wall of the change-over connector frame body, the swing arm is locked by the lock plate, the side wall below the right hook is locked by the lock plate, the whole installation of the right hook is fixedly installed, and the whole excavator hook is limited; in the installation, the lock plate is in the state of locking, and when the swing arm anticlockwise swings, its rear end contact the chamfer of lock plate bottom earlier, along its chamfer return to with lock plate bottom contact state, the lock plate does not set up clockwise swing stop device, and the slight clockwise swing of lock plate emergence can be allowed to the extension spring of manual controlling means or the connecting rod of electric control device in the twinkling of an eye of contact.
The positions of the mounting shafts of the bucket, the breaking hammer and the hydraulic shear of the matched working accessories of the model of the excavator are the same, so that the quick-change-over connector of the excavator can realize quick assembly and disassembly of the bucket, the breaking hammer and the hydraulic shear at the same time.
The device can be enlarged or reduced in equal proportion according to different size models of the excavator, so that the device is matched with various models.
The beneficial effects of the invention are as follows: the quick adapter solves the problems of high cost and low efficiency of the existing excavator, has less structural layout, simpler structure, easier manufacture and lower manufacture cost, can instantly realize the disassembly of the excavator bucket by only pressing the pressure lever by a single person by one hand, adopts a connecting rod mechanism to lighten the strength of the pressure lever when the excavator bucket is manually operated, automatically returns after the disassembly of the excavator bucket, does not need manual operation when the excavator bucket is installed, and can be directly installed; the lock plate unlocking force is extremely small, the miniature electromagnetic push rod or the lifting electric cylinder can also push the lock plate unlocking force, the lock plate unlocking force is connected with the circuit in the vehicle through the lead, remote operation can be realized, the time for switching the working accessory of the excavator is greatly shortened, the labor intensity of workers is reduced, and the working efficiency of the workers is improved.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of the present invention.
Fig. 3 is a schematic view of the present invention in partial cross section.
Fig. 4 is an enlarged view of the invention in partial section.
Fig. 5 is a schematic diagram of the unlocking structure of the present invention.
FIG. 6 is a process view of the present invention with the bucket removed.
FIG. 7 is a schematic view of the present invention with the bucket removed.
FIG. 8 is a schematic view of the present invention in its installed configuration.
FIG. 9 is a schematic view of the present invention after the bucket is installed.
Fig. 10 is a schematic structural view of the electric control device for replacing lock plate according to the present invention.
Fig. 11 is an enlarged view of a portion of the electric control device for replacing a lock plate according to the present invention.
Fig. 12 is a schematic diagram of the structure of the electric control device for replacing lock plates when unlocking.
Fig. 13 is a schematic structural view of a conversion connector frame according to the present invention.
Fig. 14 is a structural cross-sectional view of the conversion connector housing of the present invention.
Fig. 15 is a schematic view of a frame structure for mounting a lock plate according to the present invention.
Fig. 16 is a schematic view of a structure of the swing arm type movable hook of the present invention.
Fig. 17 is a schematic structural view of the swing arm type movable hook.
Fig. 18 is a schematic structural view of the present invention.
Fig. 19 is a schematic view of the structure of the present invention.
Reference numerals in the drawings:
1. a conversion connector frame body, 2, a left hook, 3, a right hook, 4, a bucket, 5, a bucket mounting shaft, 6, a bucket connecting seat, 7, a forearm mounting shaft, 8, a middle rotating shaft, 9, a lower rotating shaft, 10, a swing arm, 11 and a locking plate, 12, a left connecting column of the frame body, 13, a right connecting column of the frame body, 14, a stop block, 15, a connecting rod arm, 16, a compression bar, 17, a clamping piece, 18, a tension spring, 19, a telescopic electromagnetic valve, 20, a connecting rod, 21, a forearm mounting hole, 22 and a rib plate.
Detailed Description
As shown in fig. 1-19, the quick-change connector of the excavator comprises a change-over connector frame body 1, a fixed hook and a movable hook, wherein a forearm installation hole 21 assembled with a forearm of the excavator is formed in the top of the change-over connector frame body 1, a left hook and a right hook are arranged at the bottom of the change-over connector frame body 1, a left hook 2 is the fixed hook, a right hook 3 is the movable hook, the change-over connector frame body 1 clamps a bucket installation shaft 5 of a bucket connecting seat 6 through the fixed hook and the movable hook, and the movable hook is fixed through a locking device;
the conversion connector frame body 1 consists of front and rear side plates, an intermediate rotating shaft 8, a lower rotating shaft 9, a frame left connecting column 12, a frame right connecting column 13 and a stop block 14, wherein the front and rear side plates are fixedly connected through the frame left connecting column 12 and the frame right connecting column 13, a fixed hook opening is formed in the left lower side of the front and rear side plates of the conversion connector frame body 1, the opening is a left hook 2 with an opening facing the left side, small arm mounting holes 21 for assembling small arms of an excavator are formed in the front and rear side plates, the small arm mounting holes 21 are internally provided with small arm mounting shafts 7 of the excavator, the intermediate rotating shaft 8 is arranged in the middle part between the front and rear side plates of the conversion connector frame body 1, and the lower rotating shaft 9 is arranged in the right lower side between the front and rear side plates of the conversion connector frame body 1; a locking device is arranged on the middle rotating shaft 8, and a movable hook is arranged on the lower rotating shaft 9;
the movable hook consists of a right hook 3, a swing arm 10 and a rib plate 22, wherein the right hook 3 is positioned at the right lower part of the front side plate and the rear side plate of the conversion connector frame body 1, the top wall of the right hook is in contact with the bottom wall of the conversion connector frame body 1, the opening of the top wall faces to the right, the left end of the right hook 3 is provided with the swing arm 10 with the end part fixedly connected with the swing arm, the middle part of the swing arm 10 is provided with a shaft sleeve hole, the swing arm 10 is sleeved on the lower rotating shaft 9 through the shaft sleeve hole, the right hook 3 is connected with the conversion connector frame body 1, the swing arm 10 is provided with the rib plate 22 for increasing the connecting force with the right hook 3, and the upper side wall and the lower side wall of the swing arm 10 are provided with the rib plate 22 for increasing the torsion force of the swing arm 10;
the locking device consists of a locking plate 11, a connecting rod arm 15 and a swing control device, wherein the locking plate 11 is a plate body with a shaft sleeve hole at the top, and the locking plate 11 is sleeved on the middle rotating shaft 8 through the shaft sleeve hole so as to be connected with the adapter bracket body 1; a connecting rod arm 15 is fixedly connected to the side wall of the top end of the lock plate 11, the bottom end of the lock plate 11 is in contact with the rear end of the swing arm 10, a stop block 14 for stopping forward swing of the lock plate 11 is arranged at the right end of the lock plate 11, a pair of stop blocks 14 are respectively fixed on the front side wall and the rear side wall of the conversion connector frame body 1, a swing control device is arranged on the conversion connector frame body 1 and connected with the connecting rod arm 15 of the lock plate 11 to control swing of the same;
the swing control device is a manual control device or an electric control device, the manual control device consists of a pressure lever 16, clamping pieces 17 and tension springs 18, the left connecting column 12 of the frame body of the adapter frame body 1 is provided with the tension springs 18 hinged with the connecting rod arms 15 of the lock plate 11, the top end of the lock plate 11 is provided with the pressure lever 16 extending to the right side, the swing arm 10 is provided with the clamping pieces 17 capable of clamping the pressure lever 16 after deformation, the pressure lever 16 is pressed down to enable the front end of the pressure lever 16 to be positioned between the clamping pieces 17 on the swing arm 10, and the clamping force of the clamping pieces 17 can prevent the tension springs 18 from lifting the pressure lever under the action of a lever principle; the lock plate 11 swings clockwise through the compression bar 16, the bottom end of the lock plate is separated from the rear end of the swing arm 10, the swing arm 10 swings around the lower rotating shaft 9 as the axis under the gravity of the right hook 3 due to the fact that the rear end of the swing arm 10 is free of the limit of the lock plate 11, the right hook 3 rotates around the lower rotating shaft 9 as the axis, the opening of the right hook gradually faces downwards, the bucket swings around the left bucket mounting shaft 5 as the axis, the right bucket mounting shaft 5 swings clockwise around the left bucket mounting shaft 5 as the axis, and the right hook 3 is separated from the opening gradually downwards, so that the bucket is detached; when the swing arm 10 swings clockwise, the clamping piece 17 above the swing arm is gradually separated from the compression bar 16, and the lock plate 11 returns to the original position under the action of the tension spring 18;
the electric control device consists of a telescopic electromagnetic valve 19 and a connecting rod 20, wherein the telescopic electromagnetic valve 19 is fixed on a left connecting column 12 of a frame body of the conversion connector frame body 1, and the end part of a telescopic rod of the telescopic electromagnetic valve 19 is hinged with a connecting rod arm 15 of the lock plate 11 through the connecting rod 20; the telescopic electromagnetic valve 19 is connected with an internal circuit of the excavator through a wire, a switch of the telescopic electromagnetic valve 19 is positioned in a cab of the excavator, the telescopic electromagnetic valve 19 is controlled to extend through the switch, the telescopic electromagnetic valve 19 supports the link arm 15 through the link rod 20, the lock plate 11 swings clockwise by taking the middle rotating shaft 8 as an axis, the bottom end of the lock plate is separated from the rear end of the swing arm 10 to unlock, the switch is closed after the bucket is disassembled, the lock plate 11 returns to the original position under the action of the telescopic electromagnetic valve 19, the telescopic electromagnetic valve 19 is a miniature electromagnetic valve, and the telescopic electromagnetic valve 19 can also be replaced by a telescopic electric cylinder with the same principle.
Wherein, a chamfer is arranged above the rear end of the swing arm 10, a chamfer is arranged on the right side of the bottom end of the lock plate 11, and when the bottom end of the lock plate 11 locks the rear end of the swing arm 10, the lower edge line of the chamfer surface of the bottom end of the lock plate 11 is contacted with the lower edge line of the chamfer surface of the swing arm 10;
when the swing arm 10 is stressed on the right hook 3 at the end, the end face below the chamfer line at the rear end is contacted with the end face below the chamfer line at the bottom end of the lock plate 11, so that the contact face between the swing arm 10 and the lock plate 11 is meshed, namely, the lock plate 11 needs to swing anticlockwise by taking the middle rotating shaft 8 as the axis, the lock plate 11 is blocked by the stop block 14 and cannot rotate, the swing arm 10 can not swing clockwise due to the locking effect of the lock plate 11, the top wall of the right hook 3 is contacted with the bottom wall of the conversion connector frame body 1, the swing arm 10 cannot swing anticlockwise, and the opening of the right hook 3 cannot change direction, so that the bucket mounting shaft 5 of a bucket is firmly clamped.
When the lock plate 11 is required to be disassembled, the manual control device or the electric control device is used for enabling the lock plate 11 to swing clockwise, as the contact part of the lock plate 11 and the swing arm 10 is provided with chamfers, when the lock plate 11 swings clockwise, the chamfer inclined surface above the chamfer lower edge line of the bottom end of the lock plate 11 is not contacted with the end surface of the rear end of the swing arm 10, so that the swing can be easily realized, once the lock plate 11 is unlocked, the quick-conversion connector frame body 1 is lifted up again, under the action of the self weight of the excavator, the right-side excavator mounting shaft 5 directly drives the right-side hook 3, and as the swing arm 10 does not have the fastening of the lock plate 11, the rear end of the swing arm can swing clockwise continuously, the right-side hook 3 swings clockwise by taking the rotating shaft 9 as the axle center, and the opening of the right-side hook 3 is gradually downward, so that the right-side excavator mounting shaft 5 falls off from the right-side hook 3;
the right connecting post 13 of the frame body can limit the swing amount of the swing arm 10, when the swing arm 10 swings under the dead weight of the right hook 3 at the end part under the condition that the lock plate 11 is unlocked, the swing arm 10 at the rear end of the swing arm contacts with the right connecting post 13 of the frame body, and when the swing arm 10 contacts with the right connecting post 13 of the frame body, the distance from the axle center of the left hook 2 to the top end of the opening of the right hook 3 at the end part of the swing arm 10 is the same as the distance between the two bucket installation shafts 5 of the bucket.
When the excavator is required to be quickly installed, the excavator connecting seat 6 of the excavator is directed upwards, namely, the two excavator installing shafts 5 are positioned above the excavator, the small arm of the excavator provided with the quick adapter is controlled, the left hook 2 of the switch connector frame body 1 is clamped on the left excavator installing shaft 5, the left excavator installing shaft 5 is taken as the axis to press the small arm of the excavator downwards, the switch connector frame body 1 is made to swing clockwise by taking the left excavator installing shaft 5 as the axis, the right hook 3 below the swing arm 10 contacted with the frame body right connecting post 13 of the switch connector frame body 1 is made to approach the right excavator installing shaft 5, then the opening top end of the right hook 3 is contacted with the top wall of the right excavator installing shaft 5, the movement is continued, the right hook 3 is made to rotate by taking the contact line of the right excavator installing shaft 5 as the axis, the axis of the right hook 3 and the axis of the right excavator installing shaft 5, the opening direction of the right hook 3 is gradually towards the right side until the right hook 3 is contacted with the right side wall of the switch connector frame body 1, the whole hook 3 is locked by the swing arm 11, and the whole hook is fixed by the hook installing plate 11; in the installation process, the lock plate 11 is in a locking state, when the swing arm 10 swings anticlockwise, the rear end of the swing arm firstly contacts with the chamfer at the bottom end of the lock plate 11, the lock plate 11 returns to a state of contacting with the bottom end of the lock plate 11 along the chamfer, the lock plate 11 is not provided with a clockwise swing limiting device, and the tension spring 18 of the instant manual control device or the connecting rod 20 of the electric control device which contacts with the lock plate 11 can allow the lock plate 11 to swing slightly and clockwise.
The positions of the mounting shafts of the bucket, the breaking hammer and the hydraulic shear of the matched working accessories of the model of the excavator are the same, so that the quick-change-over connector of the excavator can realize quick assembly and disassembly of the bucket, the breaking hammer and the hydraulic shear at the same time.
The device can be enlarged or reduced in equal proportion according to different size models of the excavator, so that the device is matched with various models.
Claims (5)
1. The quick adapter comprises a conversion adapter frame body (1), a fixed hook and a movable hook, wherein a forearm installation hole (21) assembled with a forearm of the excavator is formed in the top of the conversion adapter frame body (1), a left hook and a right hook are arranged at the bottom of the conversion adapter frame body (1), the left hook (2) is the fixed hook, the right hook (3) is the movable hook, the conversion adapter frame body (1) clamps a bucket installation shaft (5) of a bucket connecting seat (6) through the fixed hook and the movable hook, and the movable hook is fixed through a locking device; the method is characterized in that: the conversion connector frame body (1) consists of front and rear side plates, an intermediate rotating shaft (8), a lower rotating shaft (9), a frame left connecting column (12), a frame right connecting column (13) and a stop block (14), wherein the front and rear side plates are fixedly connected through the frame left connecting column (12) and the frame right connecting column (13), a fixed hook opening is formed in the left lower part of the front and rear side plates of the conversion connector frame body (1), the opening is a left hook (2) with an opening facing the left side, forearm installation holes (21) assembled with a forearm of an excavator are formed in the front and rear side plates, the forearm installation shaft (7) of the excavator is inserted into the forearm installation holes (21), the intermediate rotating shaft (8) is arranged in the middle part between the front and rear side plates of the conversion connector frame body (1), and the lower rotating shaft (9) is arranged in the right lower part between the front and rear side plates of the conversion connector frame body (1); a locking device is arranged on the middle rotating shaft (8), and a movable hook is arranged on the lower rotating shaft (9); the movable hook consists of a right hook (3), a swing arm (10) and a rib plate (22), wherein the right hook (3) is positioned at the right lower part of the front side plate and the rear side plate of the conversion connector frame body (1), the top wall of the right hook is contacted with the bottom wall of the conversion connector frame body (1), the opening of the right hook faces to the right, the left end of the right hook (3) is provided with the swing arm (10) with the end part fixedly connected with the swing arm, the middle part of the swing arm (10) is provided with a shaft sleeve hole, the swing arm (10) is sleeved on the lower rotating shaft (9) through the shaft sleeve hole, the right hook (3) is connected with the conversion connector frame body (1), the rib plate (22) for increasing the connecting force with the right hook (3) is arranged on the swing arm (10), and the rib plate (22) for increasing the torsion force of the swing arm (10) is arranged on the upper side wall and the lower side wall of the swing arm (10); the locking device consists of a locking plate (11), a connecting rod arm (15) and a swing control device, wherein the locking plate (11) is a plate body with a shaft sleeve hole at the top, and the locking plate (11) is sleeved on the middle rotating shaft (8) through the shaft sleeve hole of the locking plate to be connected with the conversion connector frame body (1); a connecting rod arm (15) is fixedly connected to the side wall of the top end of the lock plate (11), the bottom end of the lock plate (11) is in contact with the rear end of the swing arm (10), a stop block (14) for stopping forward swing of the lock plate (11) is arranged at the right end of the lock plate, a pair of stop blocks (14) are respectively fixed on the front side wall and the rear side wall of the conversion connector frame body (1), a swing control device is arranged on the conversion connector frame body (1), and the swing control device is connected with the connecting rod arm (15) of the lock plate (11) and controls swing of the same; the swing control device is a manual control device, the manual control device consists of a pressing rod (16), a clamping piece (17) and a tension spring (18), the tension spring (18) hinged with a connecting rod arm (15) of a lock plate (11) is arranged on a left connecting column (12) of a frame body of a conversion connector frame body (1), the pressing rod (16) extending to the right side is arranged at the top end of the lock plate (11), the clamping piece (17) capable of clamping the pressing rod (16) after deformation is arranged on the swing arm (10), the pressing rod (16) is pressed down so that the front end of the pressing rod (16) is positioned between the clamping pieces (17) on the swing arm (10), and the clamping force of the clamping piece (17) can prevent the tension spring (18) from lifting the clamping piece under the action of a lever principle; the lock plate (11) swings clockwise through the compression bar (16), the bottom end of the lock plate is separated from the rear end of the swing arm (10), the swing arm (10) swings under the gravity of the right side hook (3) by taking the lower rotating shaft (9) as the axis due to the fact that the rear end of the swing arm (10) is free of the limit of the lock plate (11), the right side hook (3) rotates by taking the lower rotating shaft (9) as the axis, the opening of the right side hook gradually faces downwards, the bucket swings by taking the left side bucket mounting shaft (5) as the axis, the right side bucket mounting shaft (5) swings clockwise by taking the left side bucket mounting shaft (5) as the axis, and the right side hook (3) gradually downwards from the opening is separated, so that the bucket is detached; when the swing arm (10) swings clockwise, the clamping piece (17) above the swing arm is gradually separated from the compression bar (16), and the lock plate (11) returns to the original position under the action of the tension spring (18).
2. The quick coupler for an excavator according to claim 1, wherein: the electric control device consists of a telescopic electromagnetic valve (19) and a connecting rod (20), wherein the telescopic electromagnetic valve (19) is fixed on a frame left connecting column (12) of the conversion connector frame body (1), and the telescopic rod end part of the telescopic electromagnetic valve (19) is hinged with a connecting rod arm (15) of the lock plate (11) through the connecting rod (20); the telescopic electromagnetic valve (19) is connected with an inner circuit of the excavator through a wire, a switch of the telescopic electromagnetic valve (19) is positioned in a cab of the excavator, the telescopic electromagnetic valve (19) is controlled to stretch out through the switch, the telescopic electromagnetic valve (19) supports the connecting rod arm (15) through the connecting rod (20), the locking plate (11) swings clockwise by taking the middle rotating shaft (8) as an axis, the bottom end of the locking plate is separated from the rear end of the swing arm (10) to unlock, the switch is closed after the excavator is disassembled, the locking plate (11) is reset under the action of the telescopic electromagnetic valve (19), the telescopic electromagnetic valve (19) is a miniature electromagnetic valve, and the telescopic electromagnetic valve (19) can be replaced by a telescopic electric cylinder with the same principle.
3. The quick coupler for an excavator according to claim 1, wherein: the upper part of the rear end of the swing arm (10) is provided with a chamfer, the right side of the bottom end of the lock plate (11) is provided with a chamfer, and when the bottom end of the lock plate (11) locks the rear end of the swing arm (10), the lower edge line of the chamfer surface of the bottom end of the lock plate (11) is contacted with the lower edge line of the chamfer surface of the swing arm (10).
4. The quick coupler for an excavator according to claim 1, wherein: the swing arm (10) can be limited by the swing amount of the swing arm (10) through the frame right connecting column (13), when the swing arm (10) swings under the dead weight of the end right hook (3) under the condition of unlocking the lock plate (11), the rear end swing arm (10) is in contact with the frame right connecting column (13), and when the swing arm (10) is in contact with the frame right connecting column (13), the distance from the axle center of the left hook (2) to the opening top end of the right hook (3) at the end of the swing arm (10) is the same as the distance from the two bucket mounting shafts (5) of the bucket.
5. The quick coupler for an excavator according to claim 1, wherein: the device can be enlarged or reduced in equal proportion according to different size models of the excavator, so that the device is matched with various models.
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| CN201910231134.7A CN109750708B (en) | 2019-03-26 | 2019-03-26 | Quick adapter for excavator |
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| CN201910231134.7A CN109750708B (en) | 2019-03-26 | 2019-03-26 | Quick adapter for excavator |
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| CN109750708B true CN109750708B (en) | 2023-09-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110792121A (en) * | 2019-10-23 | 2020-02-14 | 广西柳工机械股份有限公司 | Quick changing device for loader accessories |
| CN115369938A (en) * | 2022-09-22 | 2022-11-22 | 钱薛飞 | Hydraulic excavator with quick-change bucket |
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| CN209741952U (en) * | 2019-03-26 | 2019-12-06 | 于兴辉 | Quick crossover sub of excavator |
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| US6422805B1 (en) * | 1998-09-08 | 2002-07-23 | Gary Miller | Quick coupler for bucket excavators |
| KR20020065006A (en) * | 2001-02-05 | 2002-08-13 | 최승묵 | a clamp's safety device for poke-crane's bucket |
| KR20100121197A (en) * | 2009-05-08 | 2010-11-17 | 대모 엔지니어링 주식회사 | Quick coupler for excavation |
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| CN105229239A (en) * | 2013-05-08 | 2016-01-06 | 卡特彼勒公司 | For the quick connector hydraulic control system of the facility of work machine |
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| CN109750708A (en) | 2019-05-14 |
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