CN114319477A

CN114319477A - Hydraulic quick-change connector for excavator

Info

Publication number: CN114319477A
Application number: CN202210245456.9A
Authority: CN
Inventors: 高二庆; 李蒙; 贺防震; 徐翔宇; 宋容华
Original assignee: Xuzhou But Construction Machinery Manufacturing Joint Stock Co ltd
Current assignee: Xuzhou But Construction Machinery Manufacturing Joint Stock Co ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-04-12
Anticipated expiration: 2042-03-14
Also published as: CN114319477B

Abstract

The invention relates to the technical field of engineering special vehicles and discloses a hydraulic quick-change connector for an excavator, wherein a liquid guide pipe is in a blocked and non-circulating state when a piston sleeve is in an initial position state, the liquid guide pipe penetrates through a hydraulic cabin II and a rotating cabin and is fixedly connected with one end of an oil injection port I, hydraulic oil enters the hydraulic cabin I through the liquid guide pipe and the oil injection port I, the liquid pressure in the hydraulic cabin I is increased at the moment, a limiting plate is pushed to extend out of the hydraulic cabin I, the limiting plate is matched with a locking groove II when the locking groove I is in a locking state, the limiting plate extends out and then is inserted into the locking groove II, so that one side of a locking plate is abutted to achieve the effect of safe limiting, and when the hydraulic failure of the device occurs, one side of the locking plate cannot be reset due to the abutment of the limiting plate, the accessory connected with the device is prevented from falling off, so that safety accidents are avoided, and the safety performance of the device is improved.

Description

Hydraulic quick-change connector for excavator

Technical Field

The invention relates to the technical field of engineering special vehicles, in particular to a hydraulic quick-change connector for an excavator.

Background

The shadow of the excavator can be seen frequently in a construction site, the excavator is an indispensable engineering machine in the engineering construction nowadays, the excavator can carry out excavation and transportation on earth fast, a large amount of labor force is saved, along with the development of science and technology, one end of the small arm of the existing excavator can not be connected with a bucket, various engineering machines such as a breaking machine, a tamping machine and the like can be connected, the effect of one machine with multiple purposes is achieved, the practicability of the excavator is greatly improved, in order to enable the excavator to carry out replacement on accessories fast, a quick-change connector is arranged at one end of the small arm of the excavator, the accessories can be replaced fast in construction, the existing quick-change connector basically comprises a main body mechanism, a hydraulic device, a fixed buckle and a movable buckle, the fixed buckle is aligned to a fixed rod on one side of the accessories in use, and the hydraulic device is controlled to push the movable buckle to be locked with the fixed rod on the other side, thereby playing the effect of fixed connection, the quick-change connector of this kind of structure has advantages such as simple structure, convenient to use and low cost.

Although current quick change coupler has a great deal of advantage, still have certain limitation in actual use, for example current quick change coupler avoids movable buckle to appear resetting when hydraulic pressure is inefficacy and leads to the accessory to break away from the problem that falls and injure people, can be at the artifical fixed pin of installation of activity buckle locking back, this kind of mode can avoid the accessory to drop, but it is comparatively inconvenient to use, it all needs to dismantle and install the safety pin to change the accessory every time, this leads to this in-process comparatively loaded down with trivial details and operating personnel excessively to be close to engineering machine and also leads to the emergence of incident easily, to this, this application file provides a hydraulic pressure type quick change coupler for excavator, aim at solving above-mentioned problem that provides.

Disclosure of Invention

Aiming at the defects of the existing hydraulic quick-change connector for the excavator in the background technology in the using process, the invention provides the hydraulic quick-change connector for the excavator, which has the advantage of automatically limiting the movable buckle and solves the problem of complexity caused by the fact that the safety pin needs to be manually disassembled and assembled in the traditional equipment.

The invention provides the following technical scheme: a hydraulic quick-change connector for an excavator comprises two main structural plates, wherein connecting rods are fixedly mounted at positions, close to two ends, of one side of each main structural plate, the main structural plates are connected with each other through the connecting rods, a fixing plate is fixedly mounted at a position, located between the connecting rods, of one side of each main structural plate, a limiting device is fixedly mounted at the bottom of the fixing plate and close to the positions of two sides of the fixing plate, a rotating bin is fixedly mounted at one side of the limiting device, limiting rotating seats are fixedly mounted at two sides of an inner cavity of the rotating bin, a hydraulic bin II is movably sleeved in the rotating bin through the limiting rotating seats, an oil injection seat is arranged at the top of the hydraulic bin II, an oil injection port II is fixedly mounted at the top of the oil injection seat and penetrates through the oil injection seat and is communicated with the inner cavity of the hydraulic bin II, and a hydraulic device is fixedly mounted on the outer surface of the hydraulic bin II, rotate one side fixed mounting in storehouse and have dust keeper, fixed mounting has pivot II on the position that main structure board one side is close to the top and is close to dust keeper, the surface activity of pivot II has cup jointed the lockplate, lockplate one end has seted up locking groove I on being close to the position of bottom, fixed mounting has the transfer line and transfer line to cooperate with hydraulic means on the position that lockplate one side is close to the bottom, locking groove II has been seted up to the other end of lockplate, stop device's inside movable mounting has the catch bar.

Preferably, the limiting device comprises a limiting bin, a clamping groove is arranged at the position, close to the bottom, of one side of the limiting bin, a strip-shaped groove is arranged on the other side of the limiting bin, a hydraulic bin I is arranged at the bottom of the inner cavity of the strip-shaped groove and close to the lower part of the inner cavity of the strip-shaped groove, a rotating shaft I is arranged on two sides of the top of the strip-shaped groove, a stroke plate is movably sleeved in the strip-shaped groove through the rotating shaft I, a limiting plate is fixedly arranged at the bottom of one side of the stroke plate and movably sleeved with the hydraulic bin I, an arc-shaped groove is arranged on the position close to the other side on the front surface of the limiting bin, a connecting groove is arranged on one side of the limiting plate and corresponds to the arc-shaped groove, the inside movable mounting of spread groove has the catch bar, spacing storehouse has openly been seted up oiling mouth I and has been run through spacing storehouse and be linked together with hydraulic pressure storehouse I, the one end and the hydraulic means fixed connection of oiling mouth I.

Preferably, hydraulic means includes piston sleeve, piston sleeve fixed mounting is on II surfaces in hydraulic pressure storehouse and the position that is located the centre, piston sleeve extends to the inside of hydraulic pressure storehouse II, piston sleeve's inside activity has cup jointed the piston rod, the one end fixed mounting of piston rod has fixed sleeve and the transfer line activity to cup joint, fixed mounting has catheter and catheter to be linked together with piston sleeve's inner chamber on the position that piston sleeve surface is located hydraulic pressure storehouse II inside, the catheter is in the state that blocks unable circulation when piston sleeve is in the initial position state, the catheter runs through hydraulic pressure storehouse II and rotates the storehouse and with the one end fixed connection of oiling mouth I.

Preferably, dust keeper includes the fixed block, the trigger slot has been seted up on the position that the fixed block bottom is located the centre, trigger slot passing signal connects's mode and control system's input is connected, fixed mounting has pivot III on the position that the fixed block both sides are close to one end, the apron has been cup jointed in the surface activity of pivot III, pivot II is corresponding with the apron, apron one side is located and is provided with dust-proof groove and dust-proof groove on the position in the centre and trigger the groove and correspond.

Preferably, the outer surface of the piston sleeve is matched with the trigger groove and the limiting plate is matched with the locking groove II when the locking groove I is in a locking state.

The invention has the following beneficial effects:

1. according to the invention, when the piston sleeve is in an initial position state, the liquid guide pipe is in a blocked and non-circulating state, so that when the device is in an operation state, the control system can control the oil cylinder to enable hydraulic oil to enter the interior of the hydraulic chamber II through the oil filling opening II, the liquid pressure in the interior of the hydraulic chamber II is raised to push the piston rod to move outwards, the locking plate is pushed through the hydraulic device to enable the locking groove I to be in a locked state, after the piston rod extends out, the liquid guide pipe is communicated with the interior of the piston sleeve, the locking plate can not move any more due to the locking state of the locking groove I, the liquid guide pipe penetrates through the hydraulic chamber II and the rotating chamber and is fixedly connected with one end of the oil filling opening I, the hydraulic oil enters the interior of the hydraulic chamber I through the liquid guide pipe and the oil filling opening I, and the liquid pressure in the interior of the hydraulic chamber I is raised, therefore, the limiting plate is pushed to extend out of the interior of the hydraulic bin I, when the locking groove I is in a locking state, the limiting plate is matched with the locking groove II, so that the limiting plate can be inserted into the locking groove II after extending out, one side of the locking plate is supported, and a safety limiting effect is achieved. The reliability of the device is improved.

2. The invention is connected with the input end of the control system by the signal connection of the trigger groove, and simultaneously, when the locking groove I is in the locking state, the outer surface of the piston sleeve is matched with the trigger groove, so that the included angle between the axis of the piston rod and the horizontal plane is continuously reduced in the process that the hydraulic device pushes the locking plate to lock, when the locking groove I is locked with an accessory, the outer surface of the piston sleeve is contacted with the trigger groove, at the moment, the trigger groove transmits the locking information to the control system by the data connection mode and enables a driver to know, when the locking groove I is not locked with data, the outer surface of the piston sleeve is still contacted with the trigger groove, and the rotation of the piston sleeve is limited by the trigger groove and can not move continuously, thereby avoiding the problem that the locking groove I is damaged due to overlarge rotating angle of the piston sleeve, so that the acting force between the cover plate and the fixing block is overlarge, the stability of the device is improved, when locking groove I aligns and normally locks with the accessory, locking plate rotation is obstructed this moment and leads to piston sleeve's surface to be unable in the beginning to contact with the trigger slot, thereby driver's accessible control system knows this condition and aligns the device with the accessory again this moment, avoids the accessory normally to carry out fixed connection and leads to not hard up the condition that appears droing and cause the mode of incident, has improved the security performance of the device.

3. According to the invention, the cover plate is movably sleeved on the outer surface of the rotating shaft III, the rotating shaft II corresponds to the cover plate, so that in the process that the limiting plate extends out of the hydraulic bin I, the stroke plate can rotate by taking the axis of the rotating shaft I as a rotation center, the surface of the stroke plate is contacted with the push rod, the push rod is pushed to rotate by taking the axis of the rotating shaft III as a rotation center, the cover plate is contacted with the bottom of the fixing block, the dust-proof groove and the trigger groove form a circular channel and wrap the piston sleeve, the problem that a large amount of raised dust generated in construction adheres to the surface of a hydraulic device to influence an oil circuit is avoided, and the dust-proof performance of the device is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional front view of the structure of the present invention;

FIG. 3 is a schematic top cross-sectional view of the structure of the present invention;

FIG. 4 is a bottom view of the structure of the present invention;

FIG. 5 is a schematic view of a structural stop device of the present invention;

FIG. 6 is a schematic cross-sectional view of a structural stop device of the present invention;

FIG. 7 is a front view of the structural stop device of the present invention;

FIG. 8 is a schematic view of a structural hydraulic device of the present invention;

FIG. 9 is a schematic cross-sectional view of a structural hydraulic device of the present invention;

FIG. 10 is a schematic view of a dust-proof device according to the present invention.

In the figure: 1. a main structural panel; 2. a connecting rod; 3. a fixing plate; 4. a limiting device; 41. a limiting bin; 42. a clamping groove; 43. a strip-shaped groove; 44. a hydraulic cabin I; 45. a rotating shaft I; 46. a stroke plate; 47. a limiting plate; 48. an arc-shaped slot; 49. connecting grooves; 410. an oil filling port I; 5. rotating the bin; 6. a limiting rotating seat; 7. a hydraulic chamber II; 8. an oil injection seat; 9. an oil filling port II; 10. a hydraulic device; 101. a piston sleeve; 102. a piston rod; 103. fixing the sleeve; 104. a catheter; 11. a dust-proof device; 111. a fixed block; 112. a trigger slot; 113. a rotating shaft III; 114. a cover plate; 115. a dust-proof groove; 12. a rotating shaft II; 13. a locking plate; 14. a locking groove I; 15. a transmission rod; 16. a locking groove II; 17. a push rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a hydraulic quick-change connector for excavators includes two main structural plates 1, two main structural plates 1 are provided, connecting rods 2 are fixedly installed at positions near two ends of one side of the main structural plate 1, the main structural plates 1 are connected with each other through the connecting rods 2, a fixing plate 3 is fixedly installed at a position between the connecting rods 2 and at one side of the main structural plate 1, a position limiting device 4 is fixedly installed at a position near two sides of the bottom of the fixing plate 3, a rotating bin 5 is fixedly installed at one side of the position limiting device 4, a position limiting rotating base 6 is fixedly installed at two sides of an inner cavity of the rotating bin 5, a hydraulic bin ii 7 is movably sleeved inside the rotating bin 5 through the position limiting rotating base 6, an oil filling base 8 is provided at the top of the hydraulic bin ii 7, an oil filling port ii 9 is fixedly installed at the top of the oil filling base 8, and the oil filling port ii 9 penetrates through the oil filling base 8 and is communicated with the inner cavity of the hydraulic bin ii 7, outer fixed surface in hydraulic pressure storehouse II 7 installs hydraulic means 10, one side fixed mounting who rotates storehouse 5 has dust keeper 11, fixed mounting has pivot II 12 on the position that main structural slab 1 one side is close to the top and is close to dust keeper 11, lockplate 13 has been cup jointed in the surface activity of pivot II 12, lockplate 13 one end has been seted up locking groove I14 on being close to the position of bottom, fixed mounting has transfer line 15 and cooperatees with hydraulic means 10 on lockplate 13 one side is close to the position of bottom, locking groove II 16 has been seted up to the other end of lockplate 13, stop device 4's inside movable mounting has catch bar 17.

Referring to fig. 5-7, the limiting device 4 includes a limiting bin 41, a position of one side of the limiting bin 41 near the bottom is provided with a clamping groove 42, the other side of the limiting bin 41 is provided with a bar groove 43, a position of the bottom of the inner cavity of the bar groove 43 near the lower part is provided with a hydraulic pressure bin i 44, two sides of the top of the bar groove 43 are provided with a rotating shaft i 45, a stroke plate 46 is movably sleeved inside the bar groove 43 through the rotating shaft i 45, the bottom of one side of the stroke plate 46 is fixedly provided with a limiting plate 47, the limiting plate 47 is movably sleeved with the hydraulic pressure bin i 44, the front of the limiting bin 41 is provided with an arc-shaped groove 48 near the other side, one side of the limiting plate 47 is provided with a connecting groove 49, the connecting groove 49 corresponds to the arc-shaped groove 48, the inside of the connecting groove 49 is movably provided with a push rod 17, the front of the limiting bin 41 is provided with an oil injection port i 410, and the oil injection port i 410 penetrates through the limiting bin 41 and is communicated with the hydraulic pressure bin i 44, one end of the oil filling port I410 is fixedly connected with the hydraulic device 10.

Referring to fig. 5-9, the hydraulic device 10 includes a piston sleeve 101, the piston sleeve 101 is fixedly installed on the outer surface of the hydraulic chamber ii 7 and located at the middle position, the piston sleeve 101 extends into the hydraulic chamber ii 7, a piston rod 102 is movably sleeved inside the piston sleeve 101, one end of the piston rod 102 is fixedly installed with a fixed sleeve 103, the fixed sleeve 103 is movably sleeved with the transmission rod 15, a liquid guide tube 104 is fixedly installed on the outer surface of the piston sleeve 101 located inside the hydraulic chamber ii 7, the liquid guide tube 104 is communicated with the inner cavity of the piston sleeve 101, when the piston sleeve 101 is at the initial position, the liquid guide tube 104 is in a blocked and non-circulated state, so that when the device is in the operating state, the control system controls the oil cylinder to enter hydraulic oil into the hydraulic chamber ii 7 through the oil inlet ii 9, at this time, the liquid pressure inside the hydraulic chamber ii 7 rises to push the piston rod 102 to move outwards, the locking plate 13 is pushed by the hydraulic device 10 to enable the locking groove I14 to be in a locked state, the liquid guide pipe 104 is communicated with the inside of the piston sleeve 101 after the piston rod 102 extends out, the locking plate 13 cannot move due to the fact that the locking groove I14 is in the locked state, at the moment, the liquid guide pipe 104 penetrates through the hydraulic cabin II 7 and the rotating cabin 5 and is fixedly connected with one end of the oil injection port I410, hydraulic oil enters the inside of the hydraulic cabin I44 through the liquid guide pipe 104 and the oil injection port I410, at the moment, the liquid pressure inside the hydraulic cabin I44 rises, the limiting plate 47 is pushed to extend out of the inside of the hydraulic cabin I44, the limiting plate 47 is matched with the locking groove II 16 when the locking groove I14 is in the locked state, the limiting plate 47 can be inserted into the inside of the locking groove II 16 after extending out, one side of the locking plate 13 is supported, and the safety limiting effect is achieved, thereby one side of lockplate 13 is supported by limiting plate 47 and can't reset when the hydraulic pressure became invalid in the device, thereby guarantee that the accessory that the device connected can not take place to drop this moment, the emergence of incident has been avoided, the security performance of the device has been improved, in addition, because power when stop device 4 moves is the same with the power source of locking groove I14, thereby make stop device 4 can carry out automatic locking lockplate 13's position, compare in traditional adoption safety pin and lock, the instability that manual locking brought has been avoided to this kind of mode, also avoided personnel too close to simultaneously and caused the problem that the incident takes place easily, the reliability of the device has been improved, catheter 104 runs through hydraulic pressure storehouse II 7 and rotates storehouse 5 and with the one end fixed connection of oiling mouth I410.

Referring to fig. 9-10, the dust-proof device 11 includes a fixed block 111, a trigger slot 112 is disposed at a middle position of the bottom of the fixed block 111, the trigger slot 112 is connected to an input end of the control system by way of signal connection, and simultaneously, when the locking slot i 14 is in a locking state, the outer surface of the piston sleeve 101 is matched with the trigger slot 112, so that during the process of pushing the locking plate 13 to lock the hydraulic device 10, an included angle between the axis of the piston rod 102 and the horizontal plane is continuously decreased, when the locking slot i 14 is locked with an accessory, the outer surface of the piston sleeve 101 is in contact with the trigger slot 112, at this time, the trigger slot 112 transmits locking information to the control system by way of data connection and enables a driver to know, when the locking slot i 14 is not locked with data, the outer surface of the piston sleeve 101 is still in contact with the trigger slot 112, and at this time, the rotation of the piston sleeve 101 is restricted by the trigger slot 112 and cannot move continuously, therefore, the problem that the locking groove I14 is locked to cause overlarge rotation angle of the piston sleeve 101 to cause overlarge acting force between the cover plate 114 and the fixed block 111 and cause damage is solved, the stability of the device is improved, when the locking groove I14 is not aligned with an accessory and is not locked normally, the rotation of the locking plate 13 is blocked to cause that the outer surface of the piston sleeve 101 cannot be contacted with the trigger groove 112 in the first time, a driver can know the situation through a control system to align the device with the accessory again, the phenomenon that the accessory is loosened and falls off due to abnormal fixed connection and causes safety accidents is avoided, the safety performance of the device is improved, the rotating shaft III 113 is fixedly installed at the position, close to one end, of the two sides of the fixed block 111, the cover plate 114 is movably sleeved on the outer surface of the rotating shaft III 113, and the rotating shaft II 12 corresponds to the cover plate 114, in the process that the limiting plate 47 extends out of the hydraulic bin I44, the stroke plate 46 rotates by taking the axis of the rotating shaft I45 as a rotating center, so that the surface of the stroke plate 46 is in contact with the push rod 17 and pushes the push rod 17 to rotate by taking the axis of the rotating shaft III 113 as the rotating center, so that the cover plate 114 is in contact with the bottom of the fixing block 111, the dust-proof groove 115 and the trigger groove 112 form a circular channel and wrap the piston sleeve 101, the problem that a large amount of raised dust generated in construction adheres to the surface of the hydraulic device 10 to influence an oil circuit is solved, the dust-proof performance of the device is improved, the dust-proof groove 115 is arranged in the middle of one side of the cover plate 114, and the dust-proof groove 115 corresponds to the trigger groove 112.

Referring to fig. 2, the outer surface of the sleeve 101 is engaged with the trigger groove 112 and the stopper plate 47 is engaged with the lock groove ii 16 in the lock state of the lock groove i 14.

The using method of the invention is as follows:

in the using process, the control system can control the oil cylinder to enable hydraulic oil to enter the hydraulic cabin II 7 through the oil filling opening II 9, at the moment, the liquid pressure inside the hydraulic cabin II 7 rises to push the piston rod 102 to move outwards, the locking groove I14 is in a locking state through the pushing locking plate 13 of the hydraulic device 10, after the piston rod 102 extends out, the liquid guide pipe 104 is communicated with the inside of the piston sleeve 101, the locking plate 13 cannot move due to the fact that the locking groove I14 is in the locking state, at the moment, the liquid guide pipe 104 penetrates through the hydraulic cabin II 7 and the rotating cabin 5 and is fixedly connected with one end of the oil filling opening I410, the hydraulic oil enters the inside of the hydraulic cabin I44 through the liquid guide pipe 104 and the oil filling opening I410, at the moment, the liquid pressure inside the hydraulic cabin I44 rises, and the limiting plate 47 is pushed to extend out from the inside of the hydraulic cabin I44, because the limiting plate 47 is matched with the locking groove II 16 when the locking groove I14 is in a locking state, the limiting plate 47 can be inserted into the locking groove II 16 after extending out, so that one side of the locking plate 13 is supported, thereby achieving the effect of safe limiting, when the device has hydraulic failure, one side of the locking plate 13 is supported by the limiting plate 47 so as not to reset, in addition, the power when the limiting device 4 operates is the same as the power source of locking of the locking groove I14, thereby enabling the limiting device 4 to automatically lock the position of the locking plate 13, in the process of pushing the locking plate 13 to lock by the hydraulic device 10, the included angle between the axis of the piston rod 102 and the horizontal plane is also continuously reduced, when the locking groove I14 and an accessory are locked, the outer surface of the piston sleeve 101 is in contact with the trigger groove 112, at the moment, the trigger groove 112 transmits locking information to a control system in a data connection mode and enables a driver to know, when the locking groove I14 is not locked with the data, the outer surface of the piston sleeve 101 still contacts with the trigger groove 112, the rotation of the piston sleeve 101 is limited by the trigger groove 112 and cannot move continuously, when the locking groove I14 is not aligned with the accessory and is not locked normally, the rotation of the locking plate 13 is blocked, so that the outer surface of the piston sleeve 101 cannot contact with the trigger groove 112 initially, at the moment, a driver can know the situation through a control system to align the device with the accessory again, the stroke plate 46 rotates by taking the axis of the rotating shaft I45 as a rotation center in the process that the limiting plate 47 extends out of the hydraulic chamber I44, so that the surface of the stroke plate 46 contacts with the push rod 17 and pushes the push rod 17 to rotate by taking the axis of the rotating shaft III as the rotation center so that the cover plate 114 contacts with the bottom of the fixing block 111, so that the dust groove 115 and the trigger groove 112 form a circular passage and enclose the piston sleeve 101.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic pressure type quick change connector for excavator, includes main structure board (1), its characterized in that: the number of the main structure plates (1) is two, connecting rods (2) are fixedly mounted on positions, close to two ends, of one side of each main structure plate (1), the main structure plates (1) are connected with each other through the connecting rods (2), a fixing plate (3) is fixedly mounted on a position, located between the connecting rods (2), of one side of each main structure plate (1), a limiting device (4) is fixedly mounted on a position, close to two sides, of the bottom of the fixing plate (3), a rotating bin (5) is fixedly mounted on one side of the limiting device (4), limiting rotating seats (6) are fixedly mounted on two sides of an inner cavity of the rotating bin (5), a hydraulic bin II (7) is movably sleeved on the inside of the rotating bin (5) through the limiting rotating seats (6), an oil injection seat (8) is arranged at the top of the hydraulic bin II (7), and an oil injection port II (9) is fixedly mounted at the top of the oil injection seat (8), the oil filling port II (9) penetrates through the oil filling seat (8) and is communicated with the inner cavity of the hydraulic cabin II (7), a hydraulic device (10) is fixedly arranged on the outer surface of the hydraulic bin II (7), a dustproof device (11) is fixedly arranged on one side of the rotating bin (5), a rotating shaft II (12) is fixedly arranged at a position close to the top and the dustproof device (11) at one side of the main structural plate (1), a locking plate (13) is movably sleeved on the outer surface of the rotating shaft II (12), a locking groove I (14) is formed in the position, close to the bottom, of one end of the locking plate (13), a transmission rod (15) is fixedly arranged at the position of one side of the locking plate (13) close to the bottom, the transmission rod (15) is matched with the hydraulic device (10), the other end of the locking plate (13) is provided with a locking groove II (16), and a push rod (17) is movably arranged in the limiting device (4).

2. The hydraulic quick-change connector for excavators according to claim 1, characterized in that: the limiting device (4) comprises a limiting bin (41), a clamping groove (42) is formed in a position, close to the bottom, of one side of the limiting bin (41), a strip-shaped groove (43) is formed in the other side of the limiting bin (41), a hydraulic bin I (44) is formed in the bottom of an inner cavity of the strip-shaped groove (43) and close to the lower position of the inner cavity of the strip-shaped groove, rotating shafts I (45) are formed in two sides of the top of the strip-shaped groove (43), a travel plate (46) is movably sleeved in the strip-shaped groove (43) through the rotating shafts I (45), a limiting plate (47) is fixedly installed at the bottom of one side of the travel plate (46), the limiting plate (47) is movably sleeved with the hydraulic bin I (44), an arc-shaped groove (48) is formed in the position, close to the other side of the limiting bin (41), a connecting groove (49) is formed in one side of the limiting plate (47), and the connecting groove (49) corresponds to the arc-shaped groove (48), the inside movable mounting of connecting groove (49) has catch bar (17), oil filler point I (410) have been seted up on spacing storehouse (41) openly, and oil filler point I (410) run through spacing storehouse (41) and are linked together with hydraulic pressure storehouse I (44), the one end and the hydraulic means (10) fixed connection of oil filler point I (410).

3. The hydraulic quick-change connector for excavators according to claim 2, characterized in that: the hydraulic device (10) comprises a piston sleeve (101), the piston sleeve (101) is fixedly arranged on the outer surface of the hydraulic chamber II (7) and is positioned in the middle, the piston sleeve (101) extends into the hydraulic chamber II (7), a piston rod (102) is movably sleeved in the piston sleeve (101), one end of the piston rod (102) is fixedly provided with a fixed sleeve (103), the fixed sleeve (103) is movably sleeved with the transmission rod (15), a liquid guide pipe (104) is fixedly arranged on the outer surface of the piston sleeve (101) at the position inside the hydraulic chamber II (7), the liquid guide pipe (104) is communicated with the inner cavity of the piston sleeve (101), when the piston sleeve (101) is in the initial position state, the catheter (104) is in the state of blocking and no flowing, the liquid guide pipe (104) penetrates through the hydraulic bin II (7) and the rotating bin (5) and is fixedly connected with one end of the oil filling opening I (410).

4. The hydraulic quick-change connector for excavators according to claim 3, characterized in that: dustproof device (11) are including fixed block (111), trigger groove (112) have been seted up on the position that fixed block (111) bottom is located the centre, trigger groove (112) pass through signal connection's mode and control system's input are connected, fixed block (111) both sides are close to fixed mounting in the position of one end and have pivot III (113), apron (114) have been cup jointed in the surface activity of pivot III (113), pivot II (12) are corresponding with apron (114), be provided with dust protection groove (115) on the position that apron (114) one side is located the centre, dust protection groove (115) are corresponding with trigger groove (112).

5. The hydraulic quick-change connector for excavators according to claim 4, characterized in that: when locking groove I (14) is in the locking state, the surface and the trigger groove (112) of piston sleeve (101) cooperate, and limiting plate (47) and locking groove II (16) cooperate.