Universal quick-change connector of excavator

Abstract

The invention relates to the field of excavator accessories, in particular to an excavator universal quick-change connector which comprises a side swing mounting frame, a master control distribution valve and a quick-change mechanism, the master control distribution valve is fixed under the side swing mounting frame, and the bottom of the master control distribution valve is fixedly connected with a rotating mechanism; the quick-changing mechanism is fixedly arranged at the bottom of the rotating mechanism, and a power accessory and a non-power accessory are arranged on the two sides of the outer portion of the quick-changing mechanism respectively. According to the quick-change connector for the accessories of the excavator, the quick-change connector for the accessories of the excavator is composed of the side-sway mounting frame, the master control distribution valve, the rotating mechanism, the quick-change mechanism and the like, a jacking rod and a jacking oil cylinder in the quick-change assembly can be driven by hydraulic power, the accessories of various types can be quickly replaced, the clamping force is improved, and the clamping efficiency is improved. The defect that a traditional shaft pin installation structure is prone to abrasion and unsafe is overcome.

Description

Technical Field

[0001] The present invention relates to the field of excavator accessories, and in particular to a universal quick-change connector for an excavator. Background Art

[0002] Excavator attachments refer to the various auxiliary tools and equipment installed on an excavator, enhancing its functionality and applicability to accommodate diverse construction needs. These attachments connect to the excavator via a hydraulic system, powered by hydraulic cylinders to achieve various construction functions. Different attachments are suitable for different working conditions, significantly improving construction efficiency and work quality. Quick couplers, also known as quick connectors or bucket changers, come in both mechanical and hydraulic types. They enable rapid switching between attachments, significantly saving time and improving work efficiency.

[0003] The attachments and arms of existing excavators are fixedly connected by an axle pin structure. The disadvantage of this connection method is that it requires manual intervention, which makes the disassembly and assembly efficiency low and is not conducive to rapid replacement and use on site. The axle pin structure makes the attachment loose in a large range when connected, increases the wear of the axle pin, and easily causes the attachment to detach due to axle pin breakage, posing a safety hazard; at the same time, this connection method makes the adjustable range of the attachment's swing and rotation movements small, which is not conducive to cooperating with the arm to perform high-precision movements; in addition, this connection method lacks an oil circuit distribution component, which is not conducive to the coordinated use of powered attachments, so that the arm can only be installed for non-powered attachments. Summary of the Invention

[0004] The purpose of the present invention is to provide an excavator universal quick-change connector in order to solve the above-mentioned problems. Through the arrangement of the side swing mounting frame, the rotating mechanism and the quick-change mechanism, the excavator mechanical arm can facilitate the rapid replacement of powered accessories and non-powered accessories, improve the efficiency of disassembly and replacement, reduce the wear of the traditional axle pin installation method, and improve the safety of accessory installation. See the following for details.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: The present invention provides a universal quick-change connector for an excavator, comprising a side-swing mounting frame, a master control distribution valve, and a quick-change mechanism. The master control distribution valve is fixed directly below the side-swing mounting frame, a rotating mechanism is fixedly connected to the bottom of the master control distribution valve, and the quick-change mechanism is fixed to the bottom of the rotating mechanism. Powered accessories and non-powered accessories are respectively provided on both sides of the quick-change mechanism. Two groups of mechanical arm connecting rods are provided through the inner cavity of the side swing mounting frame, a lock buckle is detachably provided on one side of the outer wall of the side swing mounting frame, a side swing force part is installed in the lock buckle, and rotating handles are integrally formed on both sides of the bottom of the side swing mounting frame, and the bottom of the rotating handle is hinged with an articulated part, wherein one group of the articulated parts includes a first articulated seat and a second articulated seat; The rotating mechanism includes a turbine shell fixedly connected to the hinge, a turbine body rotatably mounted inside the turbine shell, a drive shaft embedded in the inner wall of the turbine body, a worm gear engaged with one side of the outer side of the turbine body, and a rotating base rotatably mounted on the inner wall of the turbine shell connected to the bottom of the drive shaft; The quick-change mechanism includes a quick-change frame fixedly connected to the rotating base, and a quick-change connecting piece and a quick-change tightening piece are provided on the quick-change frame. The quick-change connecting piece includes a first hook and a second hook formed at both ends of the quick-change frame, and a clamping block formed on the quick-change frame is also provided directly below the first hook. The quick-change tightening piece includes a tightening rod slidably arranged on the inner wall of the quick-change frame.

[0006] The attachment installation structure composed of the above-mentioned excavator universal quick-change connector, the side swing mounting frame, the rotating mechanism and the quick-change mechanism includes the following steps when in use: S1. The side swing mounting frame is connected to the excavator's mechanical arm through the mechanical arm connecting rod, so that the rotating part and the quick-change mechanism are both attached to the end of the mechanical arm, and the main control distribution valve is connected to the excavator's oil supply system: S101: The side-swing oil cylinder body is controlled by the main control distribution valve, which activates the telescopic joint to advance and retreat, driving the second articulated seat to swing up and down. The second articulated seat, in conjunction with the first articulated seat, drives the rotating part. Under the suspension support of the rotating handle, it swings 45 degrees left and right at the bottom of the side-swing mounting frame, thereby achieving side-swing of the bottom powered and non-powered accessories. S102. The hydraulic motor is controlled by the main control distribution valve, driving the worm gear to rotate, meshing the turbine body to rotate in the turbine housing, the driving shaft at the center of the turbine body to rotate, and the rotating base connected to the bottom of the driving shaft to rotate, and then the rotating base drives the quick-change mechanism to rotate, realizing the rotation of the powered accessories and the non-powered accessories.

[0007] S2. When the quick-change mechanism is connected to an external non-powered attachment, the first hook is inserted into the bottom of the second clamping shaft on the non-powered attachment in an inverted manner. Then the clamping block supports the second clamping shaft, and at the same time, the second hook is inserted into the bottom of the first clamping shaft in an inverted manner. After flipping, the first and second clamping shafts are both clamped by the two sets of hooks. At this time, the tightening hydraulic cylinder extends two tightening rods, pressing against the outer wall of the second clamping shaft, realizing the rapid installation of the non-powered attachment: S201, the tightening hydraulic cylinder is connected to the main control distribution valve through the oil circuit conduction module for oil supply; S202: When the quick-change mechanism is connected to an external power attachment, the female oil circuit conduction block in the oil circuit conduction module is connected to the hydraulic circulation pipe of the external power attachment, and the male oil circuit conduction block is moved by the guide rod and connected to the female oil circuit conduction block, and a quick connector is used to achieve rapid connection; S203. When the quick-change mechanism is connected to the built-in power attachment, the bullhead frame is fixed to one side of the outer wall of the quick-change frame, and one movable end of the two sets of thumb clamps is rotatably installed with the bullhead frame through the first rotating axis. The other movable end of the two sets of thumb clamps is hinged to the thumb hydraulic cylinder through the third rotating axis. At the same time, the thumb hydraulic cylinder is rotatably connected to the quick-change frame through the second rotating axis, which facilitates the flexible clamping of the thumb clamps.

[0008] Preferably, the bottom of the total control distribution valve is fixedly connected to the top of the turbine housing, a turbine cover is fixed to the top of the turbine housing, the top of the total control distribution valve is separated from the bottom of the side swing mounting frame, and the total control distribution valve is externally connected to the excavator oil supply system.

[0009] Preferably, the side swing force unit includes a side swing cylinder body that is detachable from the lock, and a side swing cylinder solenoid valve is installed on one side of the top of the side swing cylinder body. The side swing cylinder solenoid valve is connected to the main control distribution valve through an oil pipe, and a round handle structure is formed at the bottom of the telescopic joint of the side swing cylinder body, and the round handle structure is hinged in the second hinged seat.

[0010] Preferably, a hydraulic motor is mounted on one side of the worm gear, the oil circuit of the hydraulic motor is connected to the main control distribution valve, and the outer wall of the hydraulic motor is fixed to the outer wall of the turbine housing.

[0011] Preferably, the power attachment includes a bullhead frame screwed to the quick-change frame, a first rotating shaft is rotatably mounted on both sides of the inner wall of the bullhead frame through bearings, a thumb clamp is rotatably mounted on the first rotating shaft, one end of the thumb clamp is hinged to a thumb hydraulic cylinder through a third rotating shaft, one end of the cylinder seat of the thumb hydraulic cylinder is rotatably connected to the quick-change frame through a second rotating shaft, the outer cover of the thumb hydraulic cylinder is provided with an outer protective cover, and the outer protective cover is fixedly connected to the outer wall of the quick-change frame.

[0012] Preferably, the non-powered attachment includes a first clamping shaft and a second clamping shaft, the first clamping shaft is used to cooperate and engage with the second hook, the second clamping shaft is used to cooperate and engage with the first hook, the top of the clamping block supports the bottom of the second clamping shaft, and the tightening rod is squeezed and in conflict with the outer wall of the second clamping shaft.

[0013] Preferably, one end of the tightening rod extending inside the quick-change frame is fixedly connected to a tightening hydraulic cylinder, and the tightening hydraulic cylinder is fixed inside the quick-change frame.

[0014] Preferably, an oil circuit conduction module is further provided inside the quick-change frame, and the oil circuit conduction module includes a male oil circuit conduction block and a female oil circuit conduction block. The tightening hydraulic cylinder is connected to the female oil circuit conduction block through a pipeline. The male oil circuit conduction block slides along the inner wall of the quick-change frame. The male oil circuit conduction block is connected to the female oil circuit conduction block through a guide rod formed on the outer wall. The oil supply end of the male oil circuit conduction block is connected to the main control distribution valve.

[0015] Preferably, two tightening rods are provided.

[0016] The beneficial effects are as follows: the present invention, by designing an excavator attachment quick-change connector composed of a side swing mounting frame, a master control distribution valve, a rotation mechanism, and a quick-change mechanism, can achieve the following: 1. The hydraulic power drives the tightening rod and tightening cylinder in the quick-change assembly, which enables rapid replacement of various types of attachments and improves the clamping force, solving the drawbacks of the traditional shaft pin installation structure that is easy to wear and unsafe; 2. The side swing cylinder body is supported by the side swing mounting frame. Through the control of the master control distribution valve, the attachment can be swung 45 degrees to the left and right, improving the working range and flexibility of the attachment. 3. The turbine and worm assembly in the rotating mechanism is driven by a hydraulic motor, driving the quick-change mechanism at the lower end to rotate without dead angles, with multiple degrees of freedom to adapt to complex spaces, further improving the working range and flexibility of replacing attachments; 4. The thumb clamp of the self-installed power attachment controls the operation of the thumb clamp cylinder through the main control distribution valve, enabling the robotic arm to grasp objects with high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a main structural diagram of the present invention; Figure 2 It is a rear view structural schematic diagram of the present invention; Figure 3 It is a bottom view structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 5 This is a schematic diagram of the structure of the present invention after removing the side swing mounting frame; Figure 6 This is a schematic diagram of the structure of the present invention after removing the turbine shell; Figure 7 1 is a schematic top view of the quick-change mechanism of the present invention; Figure 8 1 is a bottom view structural diagram of the quick-change mechanism of the present invention; Figure 9 It is a structural diagram of the oil circuit conduction module in the present invention.

[0019] The following are the descriptions of the reference numerals: 1. Side swing force unit; 101. Side swing cylinder solenoid valve; 102. Side swing cylinder body; 2. Side swing mounting frame; 201. Robot arm connecting rod; 202. Locking buckle; 203. Rotating handle; 204. Articulated member; 204a. First articulated seat; 204b. Second articulated seat; 3. Master control distribution valve; 4. Rotating mechanism; 401. Turbine housing; 402. Turbine cover; 403. Turbine body; 404. Drive shaft; 405. Turbine rod; 406. Hydraulic motor; 407. Rotating base; 5. Power attachment; 501. Thumb clamp; 502. Bullhead frame; 50 3. First rotating shaft; 504. Outer protective cover; 505. Thumb hydraulic cylinder; 506. Second rotating shaft; 507. Third rotating shaft; 6. Non-powered accessories; 601. First clamping shaft; 602. Second clamping shaft; 7. Quick-change mechanism; 701. Quick-change connector; 701a. First hook; 701b. Second hook; 701c. Clamping block; 701d. Quick-change rack; 702. Quick-change tightening member; 702a. Tightening rod; 702b. Tightening hydraulic cylinder; 8. Oil circuit conduction module; 801. Male oil circuit conduction block; 802. Female oil circuit conduction block; 803. Guide rod. DETAILED DESCRIPTION

[0020] To make the objectives, technical solutions, and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other implementations obtained by those of ordinary skill in the art without inventive effort are within the scope of protection of the present invention.

[0021] See also Figures 1-9 As shown, the present invention provides a universal quick-change connector for an excavator, comprising a side swing mounting frame 2, a master control distribution valve 3, and a quick-change mechanism 7. The master control distribution valve 3 is fixed directly below the side swing mounting frame 2. The bottom of the master control distribution valve 3 is fixedly connected to a rotating mechanism 4. The quick-change mechanism 7 is fixed to the bottom of the rotating mechanism 4. A power attachment 5 and a non-power attachment 6 are respectively provided on both sides of the outside of the quick-change mechanism 7. The power attachment 5 can be an external attachment or a built-in attachment installed on the quick-change device, and can be any type that can be adapted for installation. Two groups of mechanical arm connecting rods 201 are provided through the inner cavity of the side swing mounting frame 2, and a lock buckle 202 is detachably provided on one side of the outer wall of the side swing mounting frame 2, which is convenient for disassembly, installation and maintenance of the power unit. The side swing force unit 1 is installed in the lock buckle 202, and rotating handles 203 are integrally formed on both sides of the bottom of the side swing mounting frame 2. The bottom of the rotating handle 203 is hinged with a hinge 204, one group of which includes a first hinge seat 204a and a second hinge seat 204b. The lock buckle 202 carries the power unit to rotate along the mounting seat, and through the rotation of the second hinge seat 204b, the power unit can generate force to drive the bottom structure to swing sideways; The rotating mechanism 4 includes a turbine shell 401 fixedly connected to the hinge 204, a turbine body 403 is rotatably mounted inside the turbine shell 401, a drive shaft 404 is embedded in the inner wall of the turbine body 403, a worm 405 is engaged with the outer side of the turbine body 403, and the bottom of the drive shaft 404 is connected to a rotating base rotatably mounted on the inner wall of the turbine shell 401. The drive shaft 404 and the turbine body 403 rotate synchronously, and then the power is output through the rotating base. The turbine worm 405 structure has a self-locking function to prevent reverse rotation; The quick-change mechanism 7 includes a quick-change frame 701d fixedly connected to the rotating base, and a quick-change connecting part 701 and a quick-change tightening part 702 are provided on the quick-change frame 701d. The quick-change connecting part 701 includes a first hook 701a and a second hook 701b formed at both ends of the quick-change frame 701d. A clamping block 701c formed on the quick-change frame 701d is also provided directly below the first hook 701a. The quick-change tightening part 702 includes a tightening rod 702a slidingly arranged on the inner wall of the quick-change frame 701d. The first hook 701a and the second hook 701b are inserted into the groove and then pushed forward to be fastened and installed, and then tightened by the tightening hydraulic cylinder 702b, which is safer and more reliable.

[0022] As an optional embodiment, the bottom of the main control distribution valve 3 is fixedly connected to the top of the turbine shell 401, and the turbine cover 402 is fixed to the top of the turbine shell 401. The top of the main control distribution valve 3 and the bottom of the side swing mounting frame 2 are separated. The main control distribution valve 3 is externally connected to the excavator oil supply system. The main control distribution valve 3 is connected to the external oil supply system through a central rotary joint to achieve the purpose of continuous oil supply during rotation.

[0023] The side swing force part 1 includes a side swing cylinder body 102 that is detachable from the lock 202. A side swing cylinder solenoid valve 101 is installed on one side of the top of the side swing cylinder body 102. The side swing cylinder solenoid valve 101 is connected to the main control distribution valve 3 through an oil pipe. A round handle structure is formed at the bottom of the telescopic joint of the side swing cylinder body 102, and the round handle structure is hinged in the second hinge seat 204b.

[0024] A hydraulic motor 406 is installed on one side of the worm gear 405. The oil circuit of the hydraulic motor 406 is connected to the main control distribution valve 3. The outer wall of the hydraulic motor 406 is fixed on the outer wall of the turbine shell 401. The hydraulic motor 406 is a hydraulically driven motor with the characteristics of smooth output and large torque.

[0025] The power attachment 5 includes a bullhead frame 502 screwed to the quick-change frame 701d, and a first rotating shaft 503 is rotatably installed on both sides of the inner wall of the bullhead frame 502 through bearings. A thumb clamp 501 is rotatably installed on the first rotating shaft 503, and one end of the thumb clamp 501 is hinged to a thumb hydraulic cylinder 505. One end of the cylinder seat of the thumb hydraulic cylinder 505 is rotatably connected to the quick-change frame 701d through a second rotating shaft 506. The outer cover of the thumb hydraulic cylinder 505 is provided with an outer protective cover 504, and the outer protective cover 504 is fixedly connected to the outer wall of the quick-change frame 701d. The thumb clamp 501 can be replaced with other types of power attachments 5.

[0026] The non-powered accessory 6 includes a first clamping shaft 601 and a second clamping shaft 602. The first clamping shaft 601 is used to cooperate and engage with the second hook 701b, and the second clamping shaft 602 is used to cooperate and engage with the first hook 701a. The top of the clamping block 701c supports the bottom of the second clamping shaft 602, and the tightening rod 702a is squeezed and contacted with the outer wall of the second clamping shaft 602.

[0027] One end of the jacking rod 702a extending inside the quick-change frame 701d is fixedly connected to a jacking hydraulic cylinder 702b, and the jacking hydraulic cylinder 702b is fixed inside the quick-change frame 701d.

[0028] An oil circuit conduction module 8 is also provided inside the quick-change frame 701d. The oil circuit conduction module 8 includes a male oil circuit conduction block 801 and a female oil circuit conduction block 802. The tightening hydraulic cylinder 702b is connected to the female oil circuit conduction block 802 through a pipeline. The male oil circuit conduction block 801 slides along the inner wall of the quick-change frame 701d. The male oil circuit conduction block 801 is connected to the female oil circuit conduction block 802 through a guide rod 803 formed on the outer wall. The oil supply end of the male oil circuit conduction block 801 is connected to the main control distribution valve 3. When the male oil circuit conduction block 801 and the female oil circuit conduction block 802 are docked and connected, the guide rod 803 is used as a conductor for docking, and a quick connector is provided between the two to facilitate quick docking, reduce manual docking operations, and improve the installation efficiency of the external power attachment 5.

[0029] Two pressing rods 702a are provided.

[0030] The attachment installation structure composed of the side swing mounting frame 2, the rotating mechanism 4 and the quick-change mechanism 7 adopts the above structure, and when in use, includes the following steps: S1. The side swing mounting frame 2 is connected to the excavator's mechanical arm via the mechanical arm connecting rod 201, so that the rotating part and the quick-change mechanism 7 are both attached to the end of the mechanical arm. The main control distribution valve 3 is connected to the oil supply system of the excavator: S101: The side-swing oil cylinder body 102 is controlled by the main control distribution valve 3 to start the telescopic joint to move forward and backward, driving the second articulated seat 204b to swing up and down. The second articulated seat 204b is linked to the first articulated seat 204a to drive the rotating part. Under the suspension support of the rotating handle 203, it swings 45 degrees left and right at the bottom of the side-swing mounting frame 2, thereby achieving side-swing of the bottom power attachment 5 and non-power attachment 6. S102, the hydraulic motor 406 is controlled by the main control distribution valve 3, driving the worm gear 405 to rotate, engaging the turbine body 403 to rotate in the turbine shell 401, and the turbine body 403 drives the drive shaft 404 at the center to rotate, and the rotating base connected to the bottom of the drive shaft 404 rotates, and then the rotating base drives the quick-change mechanism 7 to rotate, thereby realizing the rotation of the power attachment 5 and the non-power attachment 6.

[0031] S2. When the quick-change mechanism 7 is connected to the external non-powered attachment 6, the first hook 701a enters the bottom of the second clamping shaft 602 on the non-powered attachment 6 in an inverted manner, and then the clamping block 701c supports the second clamping shaft 602. At the same time, the second hook 701b enters the bottom of the first clamping shaft 601 in an inverted manner. After flipping, the first clamping shaft 601 and the second clamping shaft 602 are both clamped by the two sets of hooks. At this time, the tightening hydraulic cylinder 702b extends two tightening rods 702a, pressing against the outer wall of the second clamping shaft 602, thereby realizing the rapid installation of the non-powered attachment 6: S201, the tightening hydraulic cylinder 702b is connected to the main control distribution valve 3 through the oil circuit conduction module 8 for oil supply; S202: When the quick-change mechanism 7 is connected to the external power attachment 5, the female oil circuit conduction block 802 in the oil circuit conduction module 8 is connected to the hydraulic circulation pipe of the external power attachment 5. The male oil circuit conduction block 801 is moved by the guide rod 803 and connected to the female oil circuit conduction block 802, and a quick connector is used to achieve rapid connection. S203. When the quick-change mechanism 7 is connected to the built-in power attachment 5, the bullhead frame 502 is fixed to one side of the outer wall of the quick-change frame 701d, and one movable end of the two sets of thumb clamps 501 is rotatably installed with the bullhead frame 502 through the first rotating shaft 503. The other movable end of the two sets of thumb clamps 501 is hinged to the thumb hydraulic cylinder 505 through the third rotating shaft 507. At the same time, the thumb hydraulic cylinder 505 is rotatably connected to the quick-change frame 701d through the second rotating shaft 506, so that the thumb clamps 501 can be flexibly clamped.

[0032] The present invention can achieve the following through the arrangement of the side swing mounting frame 2, the main control distribution valve 3, the rotation mechanism 4 and the quick change mechanism 7: hydraulic power drives the tightening rod 702a and the tightening cylinder in the quick change assembly to realize rapid replacement of various types of accessories, and improves the clamping force, solving the disadvantages of the traditional axle pin mounting structure that is easy to wear and unsafe; the side swing cylinder body 102 is supported by the side swing mounting frame 2, and is controlled by the main control distribution valve 3 to realize the 45° side swing function of the accessory to the left and right, thereby improving the working range and flexibility of the accessory; the turbine vortex rod 405 assembly in the rotation mechanism 4 is driven by the hydraulic motor 406, driving the quick change mechanism 7 at the lower end to rotate without dead angles, adapting to complex spaces with multiple degrees of freedom, and further improving the working range and flexibility of replacing accessories; the thumb clamp 501 of the self-installed power accessory 5 controls the operation of the thumb clamp 501 cylinder through the main control distribution valve 3, thereby realizing high-precision grasping of objects by the robotic arm.

[0033] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A universal quick-change connector for an excavator, characterized by: The invention comprises a side swing mounting frame (2), a main control distribution valve (3) and a quick change mechanism (7), wherein the main control distribution valve (3) is fixed directly below the side swing mounting frame (2), the bottom of the main control distribution valve (3) is fixedly connected to a rotating mechanism (4), the quick change mechanism (7) is fixedly arranged at the bottom of the rotating mechanism (4), and the outside of the quick change mechanism (7) is respectively provided with a power attachment (5) and a non-power attachment (6); Two groups of mechanical arm connecting rods (201) are provided through the inner cavity of the side-swing mounting frame (2); a lock buckle (202) is detachably provided on one side of the outer wall of the side-swing mounting frame (2); a side-swing force portion (1) is installed in the lock buckle (202); rotating handles (203) are integrally formed on both sides of the bottom of the side-swing mounting frame (2); a hinged member (204) is hinged at the bottom of the rotating handle (203); one group of the hinged members (204) includes a first hinged seat (204a) and a second hinged seat (204b); The rotating mechanism (4) comprises a turbine shell (401) fixedly connected to the hinge (204), a turbine body (403) rotatably mounted inside the turbine shell (401), a drive shaft (404) being stuck in the inner wall of the turbine body (403), a worm rod (405) being engaged on one side of the outer side of the turbine body (403), and a rotating base rotatably mounted on the inner wall of the turbine shell (401) being connected to the bottom of the drive shaft (404); The quick-change mechanism (7) comprises a quick-change frame (701d) fixedly connected to the rotating base, the quick-change frame (701d) being provided with a quick-change connecting piece (701) and a quick-change pressing piece (702), the quick-change connecting piece (701) comprising a first hook (701a) and a second hook (701b) formed at both ends of the quick-change frame (701d), a clamping block (701c) formed on the quick-change frame (701d) being further provided directly below the first hook (701a), and the quick-change pressing piece (702) comprising a pressing rod (702a) slidingly arranged with the inner wall of the quick-change frame (701d).

2. The excavator universal quick-change connector according to claim 1, characterized in that: The bottom of the master control distribution valve (3) is fixedly connected to the top of the turbine housing (401), a turbine cover (402) is fixed to the top of the turbine housing (401), the top of the master control distribution valve (3) and the bottom of the side swing mounting frame (2) are separated, and the master control distribution valve (3) is externally connected to the excavator oil supply system.

3. The excavator universal quick-change connector according to claim 2, characterized in that: The side swing force part (1) comprises a side swing cylinder body (102) detachable from the lock buckle (202); a side swing cylinder solenoid valve (101) is mounted on one side of the top of the side swing cylinder body (102); the side swing cylinder solenoid valve (101) is connected to the main control distribution valve (3) through an oil pipe; a round handle structure is formed on the bottom of the telescopic joint of the side swing cylinder body (102), and the round handle structure is hinged in the second hinge seat (204b).

4. The excavator universal quick-change connector according to claim 3, characterized in that: A hydraulic motor (406) is mounted on one side of the worm gear (405), the oil circuit of the hydraulic motor (406) is connected to the main control distribution valve (3), and the outer wall of the hydraulic motor (406) is fixed to the outer wall of the turbine housing (401).

5. The universal quick-change connector for excavators according to claim 4, characterized in that: The power attachment (5) includes a bullhead frame (502) screw-mounted to the quick-change frame (701d), first rotating shafts (503) are rotatably mounted on both sides of the inner wall of the bullhead frame (502) through bearings, a thumb clamp (501) is rotatably mounted on the first rotating shaft (503), one end of the thumb clamp (501) is hinged to a thumb hydraulic cylinder (505) through a third rotating shaft (507), one end of the cylinder seat of the thumb hydraulic cylinder (505) is rotatably connected to the quick-change frame (701d) through a second rotating shaft (506), the outer cover of the thumb hydraulic cylinder (505) is provided with an outer protective cover (504), and the outer protective cover (504) is fixedly connected to the outer wall of the quick-change frame (701d).

6. The excavator universal quick-change connector according to claim 5, characterized in that: The non-powered attachment (6) comprises a first clamping shaft (601) and a second clamping shaft (602), wherein the first clamping shaft (601) is used to cooperate with the second clamping hook (701b) for clamping, and the second clamping shaft (602) is used to cooperate with the first clamping hook (701a) for clamping, the top of the clamping block (701c) supports the bottom of the second clamping shaft (602), and the tightening rod (702a) is pressed and abutted against the outer wall of the second clamping shaft (602).

7. The excavator universal quick-change connector according to claim 6, characterized in that: One end of the tightening rod (702a) extending inside the quick-change frame (701d) is fixedly connected to a tightening hydraulic cylinder (702b), and the tightening hydraulic cylinder (702b) is fixed inside the quick-change frame (701d).

8. The universal quick-change connector for excavators according to claim 7, characterized in that: An oil circuit conduction module (8) is further provided inside the quick-change frame (701d), the oil circuit conduction module (8) comprising a male oil circuit conduction block (801) and a female oil circuit conduction block (802), the tightening hydraulic cylinder (702b) and the female oil circuit conduction block (802) being connected via a pipeline, the male oil circuit conduction block (801) sliding along the inner wall of the quick-change frame (701d), the male oil circuit conduction block (801) being connected to the female oil circuit conduction block (802) via a guide rod (803) formed on the outer wall, and the oil supply end of the male oil circuit conduction block (801) being connected to the main control distribution valve (3).

9. The excavator universal quick-change connector according to claim 1, characterized in that: Two tightening rods (702a) are provided.

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