CN112854328A - Hydraulic drive's excavator accessory quick connector and excavator - Google Patents
Hydraulic drive's excavator accessory quick connector and excavator Download PDFInfo
- Publication number
- CN112854328A CN112854328A CN202110452530.XA CN202110452530A CN112854328A CN 112854328 A CN112854328 A CN 112854328A CN 202110452530 A CN202110452530 A CN 202110452530A CN 112854328 A CN112854328 A CN 112854328A
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- Prior art keywords
- quick
- assembly
- change
- plate
- connector
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3636—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat using two or four movable transversal pins
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/365—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with redundant latching means, e.g. for safety purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3654—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with energy coupler, e.g. coupler for hydraulic or electric lines, to provide energy to drive(s) mounted on the tool
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/3604—Devices to connect tools to arms, booms or the like
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
- E02F3/3663—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat hydraulically-operated
Abstract
The invention discloses a hydraulic-driven excavator accessory quick connector and an excavator, belonging to the technical field of excavator manufacturing; the hydraulic-driven excavator accessory quick connector comprises a quick-change connector assembly and a quick-change lug plate assembly; the quick-change connector assembly is connected with a connecting rod and a bucket rod of the excavator; the quick-change ear plate component is connected with the accessory; one end of the quick-change connector assembly is connected with the quick-change lug plate assembly in a clamping mode, and the other end of the quick-change connector assembly completes the extending and retracting actions of the bolt in the quick-change lug plate assembly through the driving device, so that the quick-change connector assembly and the quick-change lug plate assembly are connected and disconnected. Compared with the traditional method for manually replacing accessories and the common mechanical quick connector in the market, the quick connector is quicker and more convenient, has less damage to the relevant connecting part of the working device, and has safer and more reliable integral structure.
Description
Technical Field
The invention relates to the technical field of excavator manufacturing, in particular to a hydraulic drive excavator accessory quick connector.
Background
With the continuous development of the engineering machinery industry towards diversification, the work accessories carried by the engineering machinery are increasingly highly regarded. As one of the most widely used construction machines, a hydraulic excavator is often replaced with an auxiliary machine according to actual working conditions during on-site construction.
There are several methods of changing the attachment in the prior art:
(1) the accessory is disassembled and assembled by manually disassembling and assembling the bucket rod and the pin shaft of the hinge point at the front end of the connecting rod; the method for replacing the accessory is high in labor intensity and long in dismounting time, and the accessory is easy to damage the relevant connecting part of the working device to a certain extent when being frequently dismounted;
(2) the common mechanical quick connector on the market adjusts the distance of the movable claw by rotating the lead screw or realizes the functions of detaching and installing accessories by detaching and installing a stop block fastened by a bolt; the method for replacing the attachments still needs a large amount of manpower to assist in replacement in the using process and is not suitable for hydraulic excavators with medium and large tonnage;
(3) the common hydraulic quick connector in the market realizes the installation and the disassembly of accessories by pushing out and pulling back the movable claws by the hydraulic oil cylinder; the structure for replacing the accessories ensures that the hydraulic oil cylinder can directly bear load force in the working process of the excavator, and certain failure risk exists.
The development of the excavator accessory quick connector is greatly promoted under the current situation. The quick connector for the excavator accessories is an intermediate connecting device additionally arranged between an excavator bucket rod, a connecting rod and a working machine tool, is used for efficiently, simply, safely and reliably realizing the quick replacement among different working accessories, further saves the labor and time consumption, improves the working efficiency of the excavator, and expands the application range of the hydraulic excavator.
Disclosure of Invention
The invention provides a hydraulic-driven excavator accessory quick connector and an excavator, which can quickly and safely realize quick replacement between accessories and further improve the working efficiency of the excavator.
The technical scheme adopted by the invention is as follows:
the invention discloses a hydraulic-driven quick connector for an excavator accessory, which comprises a quick-change connector component and a quick-change lug plate component; the quick-change connector assembly is connected with a connecting rod and a bucket rod of the excavator; the quick-change ear plate component is connected with the accessory; one end of the quick-change connector assembly is connected with the quick-change lug plate assembly in a clamping mode, and the other end of the quick-change connector assembly completes the extending and retracting actions of the bolt in the quick-change lug plate assembly through the driving device, so that the quick-change connector assembly and the quick-change lug plate assembly are connected and disconnected.
The specific scheme of quick change coupler subassembly does: the quick-change connector assembly comprises a connector body, two bolts, a driving device, a second pin shaft assembly and a third pin shaft assembly; the driving device comprises a hydraulic oil cylinder, a movable block and two transmission rods; the joint body is connected with a connecting rod and a bucket rod of the excavator through a second pin shaft assembly and a third pin shaft assembly respectively; the cylinder barrel of the hydraulic oil cylinder is fixedly arranged in the connector body, a piston rod of the hydraulic oil cylinder is hinged with the movable block, one ends of the two transmission rods are respectively hinged with the movable block, and the two transmission rods and the piston rod of the hydraulic oil cylinder form a Y-shaped structure; the two bolts are respectively inserted into the two shaft seat assemblies and can do stretching and retracting movement along the axial direction of the shaft seat assemblies; the other ends of the two transmission rods are respectively hinged with the two bolts, the piston rods extend out to drive the transmission rods to swing and the bolts to extend out until the bolts on the left side and the right side respectively penetrate through holes in the quick-change lug plate assembly.
The specific scheme of the movable block is as follows: the movable block comprises two flat plates and a supporting part, and the two flat plates are connected through the supporting part after being arranged in a clearance manner; the piston rod penetrates through the two flat plates and is hinged through a first pin shaft; one ends of the two transmission rods are respectively penetrated into the two flat plates and hinged through a third pin shaft; the other ends of the two transmission rods penetrate into the two bolts respectively and are hinged through the first pin shaft assembly.
The preferable scheme is as follows: the piston rod is provided with a shaft shoulder, and after the piston rod is hinged with the movable block, the side surfaces of the two flat plates are abutted against the shaft shoulder, so that the limiting and positioning effects of the shaft shoulder on the movable block are realized, and the two bolts can be synchronously carried out when the two bolts are extended and retracted.
As an optimization scheme of the invention: a pressing plate assembly is fixed on one flat plate of the movable block and pressed on the end surfaces of one sides of the shaft shoulders of the first pin shaft and the two third pin shafts, so that the three pin shafts are prevented from shifting and falling off along the axial direction; and the thicknesses of the shaft shoulders of the first pin shaft and the third pin shaft are the same.
The specific scheme of the pressing plate assembly is as follows: the pressure plate assembly comprises a pressure plate and an adjusting plate; the pressing plate and the adjusting sheet are provided with a through hole respectively, the adjusting sheet is arranged on one side of the pressing plate, and the through holes of the pressing plate and the adjusting sheet are coaxial so that a third bolt penetrates through the pressing plate assembly and is connected with a threaded hole in the movable block; the thickness of the adjusting sheet is equal to or slightly smaller than the thickness of the shaft shoulders of the first pin shaft and the third pin shaft; and a fifth opening and two sixth openings are further formed in the pressing plate and respectively correspond to the first pin shaft and the two third pin shafts.
The specific scheme of the joint body is as follows: the joint body comprises a left side plate, a right side plate, a partition plate, two shaft seat assemblies, a C-shaped sleeve, a first stop ring and a second stop ring; the left side plate and the right side plate are kept parallel and are respectively fixed on the left side and the right side of the partition plate; the two shaft seat assemblies are coaxially arranged on the left side plate and the right side plate; the C-shaped sleeve is fixedly connected with the left side plate and the right side plate and is in clamping fit with a fourth pin shaft assembly on the quick-change ear plate assembly; the first stop ring is connected with the left side plate, the second pin shaft assembly penetrates through the left side plate and the right side plate to be fixedly connected with the first stop ring, and the quick-change connector assembly is hinged to the connecting rod in an auxiliary mode; the second stop ring is connected with the left side plate, the third pin shaft assembly penetrates through the left side plate and the right side plate to be fixedly connected with the second stop ring, and the quick-change connector assembly is hinged to the bucket rod in an auxiliary mode.
The specific scheme of the shaft seat assembly is as follows: the shaft seat assembly comprises a shaft seat, a bearing and two first check rings; the shaft seat is provided with a through hole, and two ends of the through hole are respectively provided with a hole groove; the bearing is arranged in the through hole of the shaft seat and used for supporting and guiding the movement of the bolt; the first check ring is arranged in a hole groove of the shaft seat to prevent the bearing from shifting and falling off along the axial direction.
As an optimization scheme of the invention: the joint body also comprises two positioning blocks; the two positioning blocks are symmetrically arranged on the outer walls of the left side plate and the right side plate, and the two positioning blocks are in clamping fit with the two openings in the quick-change lug plate assembly to limit the relative position of the quick-change connector assembly when the quick-change connector assembly is in butt joint with the quick-change lug plate assembly.
The specific scheme of the quick-change connector assembly is as follows: the quick-change connector assembly comprises a left lug plate, a right lug plate, a third stop ring and a fourth pin shaft assembly; the left ear plate and the right ear plate are kept parallel and fixed on the metal body; the third stop ring is connected with the left lug plate, and the fourth pin shaft assembly penetrates through the left lug plate and the right lug plate and is fixedly connected with the third stop ring.
As an optimization scheme of the invention: the safety pin shaft assembly is also included; the safety pin shaft assembly is inserted into the corresponding through hole of the quick-change lug plate assembly after the quick-change connector assembly and the quick-change lug plate assembly are connected, and the safety pin shaft assembly plays a role in safety protection.
The specific scheme of the safety pin shaft assembly is as follows: the safety pin shaft assembly comprises a safety pin and a lock pin; the front end part of the safety pin is in a conical shape or a round table shape, and is provided with a radial through hole, and the rear end part is provided with a handle; the safety pin is arranged in a protruding opening of the quick-change connector assembly after penetrating through the quick-change lug plate assembly, and the lock pin penetrates through a radial through hole in the front end of the safety pin to prevent the safety pin from shifting and falling off along the axial direction.
As an optimization scheme of the invention: when the safety pin shaft assembly is not used, the safety pin penetrates through the quick-change connector assembly, and the lock pin penetrates through the radial through hole in the front end of the safety pin to prevent the safety pin from moving and falling off along the axial direction.
The invention also discloses an excavator, which comprises a connecting rod, a bucket rod and an accessory body, wherein the connecting rod and the bucket rod are connected with the accessory body through the hydraulic-driven excavator accessory quick connector.
The invention has the beneficial effects that:
1. compared with the traditional method for manually replacing accessories and the common mechanical quick connector in the market, the method is quicker and more convenient, and has less damage to the relevant connecting parts of the working device;
2. different from common hydraulic accessory quick connectors in the market, the hydraulic oil cylinder in the hydraulic excavator accessory quick connector only serves as a driving device to guide the plug pin to complete extending and retracting actions when the accessories are installed and disassembled, and cannot directly bear load force in the working process of the excavator, so that the overall structure is safer and more reliable;
3. The safety hinge pin is arranged, the risk that an accessory is accidentally missed due to mistaken touch of an operator in the working process can be eliminated, and meanwhile, the safety hinge pin is reset when the accessory is not used, so that the accessory is prevented from being lost.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
In the drawings:
FIG. 1 is a schematic view of the hydraulic excavator attachment quick connector assembly of the present invention.
FIG. 2 is a schematic diagram of the connection of the hydraulically driven excavator attachment quick coupler of the present invention to the linkage, arm and attachment.
Fig. 3 is a schematic view of the quick-change coupler assembly of fig. 1 from one perspective.
Fig. 4 is a schematic view of the quick-change coupler assembly of fig. 1 from another perspective.
Fig. 5 is a schematic illustration of the quick-change coupler assembly of fig. 1 with the lower closure plate and first bolt, half-section coupler body removed.
Fig. 6 is an interior view of the quick-change coupling assembly of fig. 1 and a sectional view of a portion of the connection (a being an interior view and b being a sectional view taken along plane a-a).
FIG. 7 is a schematic external view of the hydraulic ram of FIG. 5.
Fig. 8 is a schematic external view of the movable block of fig. 5.
Figure 9 is a schematic view of the profile of the transmission rod of figure 5.
Fig. 10 is a schematic diagram of the quick-change ear plate assembly of fig. 1.
Fig. 11 is a schematic external view of the left and right ear plates of fig. 10.
Fig. 12 is a schematic diagram of the construction of the safety pin assembly of fig. 1.
Fig. 13 is a schematic view of the joint body of fig. 3 from a single perspective.
Fig. 14 is a schematic view of the joint body of fig. 3 from another perspective.
Fig. 15 is a schematic external view of the left and right side plates in fig. 13.
Fig. 16 is a schematic structural diagram of the first pin assembly of fig. 5.
FIG. 17 is a schematic diagram of the components and profile of the platen assembly of FIG. 5.
Fig. 18 is a schematic structural diagram of the second and third pin assemblies in fig. 3.
FIG. 19 is a schematic illustration of the components of the fourth pintle assembly of FIG. 10.
Fig. 20 is a schematic view (exploded view) of the axle seat assembly of fig. 14.
Fig. 21 is a schematic view of the quick-change coupler assembly shown prior to mating with the quick-change ear plate assembly.
Fig. 22 is a schematic view of the C-shaped sleeve of the quick-change coupler assembly fully engaged with the fourth pin shaft assembly of the quick-change ear plate assembly.
Fig. 23 is a schematic view of the quick-change coupler assembly being aligned with the quick-change ear plate assembly.
Fig. 24 is a schematic illustration of the internal structure of the quick-change coupler assembly prior to connection to the quick-change ear plate assembly.
Fig. 25 is a schematic view of the interior of the quick-change coupler assembly after connection to the quick-change ear plate assembly.
Fig. 26 is a schematic view of the quick-change coupler assembly after it has been connected to the quick-change lug plate assembly and the shear pin assembly has been inserted.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 and 2, a hydraulic-driven quick connector for an excavator accessory comprises a quick-change connector assembly 1, a quick-change lug plate assembly 2 and a safety pin shaft assembly 3; the quick-change connector assembly 1 is connected with a connecting rod 4 and a bucket rod 5 of the excavator; the quick-change ear plate component 2 is connected with the accessory 6; the safety pin shaft component 3 is inserted into the corresponding through hole of the quick-change lug plate component 2 after the quick-change connector component 1 and the quick-change lug plate component 2 are connected, so that the safety protection effect is achieved.
As shown in fig. 3 to 9, the quick-change connector assembly 1 includes a connector body 1-1, a lower sealing plate 1-2, a plurality of first bolts 1-3, a hydraulic cylinder 1-4, a plurality of second bolts 1-5, a movable block 1-6, a first pin 1-7, two pins 1-8, two transmission rods 1-9, two first pin assemblies 1-10, two third pin assemblies 1-11, a pressing plate assembly 1-12, third bolts 1-13, second pin assemblies 1-14, and third pin assemblies 1-15; the lower sealing plate 1-2 is provided with a plurality of through holes and fixedly connected with a left reinforcing plate 1-1-6, a right reinforcing plate 1-1-7 and a base plate 1-1-8 which are provided with a plurality of threaded holes through a plurality of first bolts 1-3; a cylinder barrel of the hydraulic oil cylinder 1-4 is provided with a mounting plate 1-4-a with a plurality of through holes, the mounting plate is fixedly connected with a mounting seat 1-1-9 through a plurality of second bolts 1-5, and a piston rod of the hydraulic oil cylinder 1-4 is provided with a shaft shoulder 1-4-b and a ninth hole 1-4-c; the oil inlet and the oil outlet of the hydraulic oil cylinders 1 to 4 can be communicated with a hydraulic pipeline arranged on the bucket rod 5 through a hydraulic hose; the movable block 1-6 comprises two flat plates, a support part, a tenth hole 1-6-c and two eleventh holes 1-6-d, the support part is preferably two vertical rods, the two flat plates are arranged in a clearance mode, and the two vertical rods are symmetrically arranged on two sides of the two flat plates and are respectively connected with the two flat plates; the upper flat plate 1-6-a is provided with a threaded hole, the tenth hole 1-6-c and the ninth hole 1-4-c are coaxial and hinged through the first pin shaft 1-7, the side surface 1-6-b of the flat plate props against the shaft shoulder 1-4-b, so that the limiting and positioning effects of the shaft shoulder 1-4-b on the movable block 1-6 are realized, and the two pins 1-8 can be synchronously carried out when the two pins extend and retract; the first pin shaft 1-7 is provided with a shaft shoulder, one end face of the shaft shoulder is propped against the upper flat plate 1-6-a, and the other end face of the shaft shoulder is propped against the pressing plate 1-12-1; the front end parts of the inserted pins 1-8 are arranged in a conical shape or a circular truncated cone shape, the rear end parts are provided with radial through holes, and the two inserted pins 1-8 are respectively inserted into the two shaft seat assemblies 1-1-4 and can do stretching and retracting movement along the axial direction of the shaft seat assemblies 1-1-4; the driving rods 1-9 are provided with twelfth holes 1-9-a and tenth holes 1-9-b, the twelfth holes 1-9-a of the two driving rods 1-9 are respectively coaxial with the radial through holes at the rear ends of the two bolts 1-8 and hinged through the first pin shaft assemblies 1-10, and the thirteenth holes 1-9-b of the two driving rods 1-9 are respectively coaxial with the eleventh holes 1-6-d of the movable blocks 1-6 and hinged through the third pin shafts 1-11; the third pin shaft 1-11 is provided with a shaft shoulder, one end face of the shaft shoulder is propped against the upper flat plate 1-6-a, and the other end face of the shaft shoulder is propped against the pressing plate 1-12-1; the pressing plate assembly 1-12 is pressed on the end faces of one sides of the shaft shoulders of the first pin shaft 1-7 and the two third pin shafts 1-11 to prevent the three pin shafts from moving and falling off along the axial direction, the thickness of the shaft shoulders of the first pin shaft 1-7 and the third pin shaft 1-11 is the same, and the fifth opening 1-12-1-a and the two sixth openings 1-12-1-b on the first pin shaft 1-7 and the two third pin shafts 1-11 respectively correspond to the first pin shaft 1-7 and the two third pin shafts 1-11; third bolts 1-13 penetrate through holes of the pressure plate assembly 1-12 and are connected with threaded holes on the first surface 1-6-a, so that the pressure plate assembly 1-12 is fixedly connected with the movable block 1-6; the second pin shaft assembly 1-14 penetrates through the third hole 1-1-1-c and the seventh hole 1-1-2-c and is fixedly connected with the first stop ring 1-1-11 to assist in realizing the hinging of the quick-change connector assembly 1 and the connecting rod 4; and the third pin shaft assembly 1-15 penetrates through the fourth hole 1-1-1-d and the eighth hole 1-1-2-d and is fixedly connected with the second stop ring 1-1-12 to assist in realizing the hinging of the quick-change connector assembly 1 and the bucket rod 5.
As shown in fig. 10 and 11, the quick-change ear plate assembly 2 comprises a left ear plate 2-1, a right ear plate 2-2, a third stop ring 2-3 and a fourth pin shaft assembly 2-4; the left ear plate 2-1 is provided with a seventh opening 2-1-a, a fourteenth hole 2-1-b, a fifteenth hole 2-1-c and a sixteenth hole 2-1-d; the right ear plate 2-2 is provided with an eighth opening 2-2-a, a seventeenth hole 2-2-b, an eighteenth hole 2-2-c and a nineteenth hole 2-2-d; the left ear plate 2-1 and the right ear plate 2-2 are kept parallel and fixedly connected with the accessory 6 through welding or other mechanical connection forms; the fourteenth hole 2-1-b, the seventeenth hole 2-2-b, the fifteenth hole 2-1-c, the eighteenth hole 2-2-c, the sixteenth hole 2-1-d, the nineteenth hole 2-2-d have the same aperture and coaxial positions, and the seventh opening 2-1-a and the eighth opening 2-2-a have the same shape and symmetrical positions; the third stop ring 2-3 is coaxial with the fifteenth hole 2-1-b, is welded with the left lug plate 2-1 and is provided with a radial through hole for a sixth bolt 2-4-2 to penetrate through; the fourth pin shaft component 2-4 penetrates through the fourteenth hole 2-1-b and the seventeenth hole 2-2-b and is fixedly connected with the third stop ring 2-3.
As shown in fig. 12, the safety pin assembly 3 includes a safety pin 3-1, a lock pin 3-2; the front end part of the safety pin 3-1 is arranged to be conical or round table-shaped, a radial through hole is formed, and the rear end part is provided with a handle convenient for a user to carry and place; the safety pin 3-1 is arranged in the fifteenth hole 2-1-c and the eighteenth hole 2-2-c after the quick-change connector assembly 1 is connected with the quick-change lug plate assembly 2 in a penetrating manner, and the safety pin 3-1 is also positioned in the first opening 1-1-1-e and the third opening 1-1-2-e, so that the quick-change connector assembly 1 and the quick-change lug plate assembly 2 are prevented from being accidentally separated due to mistaken touch in the working process of an operator, and a safety protection effect is achieved; the safety pin 3-1 can be placed in the first hole 1-1-1-a and the fifth hole 1-1-2-a in a penetrating way when not used, so that the safety pin is prevented from being lost; the lock pin 3-2 penetrates through a radial through hole at the front end part of the safety pin 3-1 to prevent the safety pin 3-1 from shifting and falling off along the axial direction.
Optionally, as shown in fig. 13 to 15, the joint body 1-1 includes a left side plate 1-1-1, a right side plate 1-1-2, a partition plate 1-1-3, two shaft seat assemblies 1-1-4, a C-shaped sleeve 1-1-5, a left reinforcing plate 1-1-6, a right reinforcing plate 1-1-7, two backing plates 1-1-8, two mounting seats 1-1-9, two positioning blocks 1-1-10, a first snap ring 1-1-11, and a second snap ring 1-1-12; the left side plate 1-1-1 is provided with a first hole 1-1-1-a, a second hole 1-1-1-b, a third hole 1-1-1-c, a fourth hole 1-1-1-d, a first opening 1-1-1-e and a second opening 1-1-1-f; the right side plate 1-1-2 is provided with a fifth hole 1-1-2-a, a sixth hole 1-1-2-b, a seventh hole 1-1-2-c, an eighth hole 1-1-2-d, a third opening 1-1-2-e and a fourth opening 1-1-2-f; the left side plate 1-1-1 and the right side plate 1-1-2 are kept parallel and are respectively welded on the left side and the right side of the partition plate 1-1-3; the first hole 1-1-1-a, the fifth hole 1-1-2-a, the second hole 1-1-1-b, the sixth hole 1-1-2-b, the third hole 1-1-1-c, the seventh hole 1-1-2-c, the fourth hole 1-1-1-d and the eighth hole 1-1-2-d have the same aperture and coaxial positions, and the first opening 1-1-1-e, the third opening 1-1-2-e, the second opening 1-1-1-f and the fourth opening 1-1-2-f have the same shape and symmetrical positions; a shaft seat assembly 1-1-4 is coaxial with the second hole 1-1-1-b and is welded with the left side plate 1-1-1 and the partition plate 1-1-3; a shaft seat assembly 1-1-4 is coaxial with the sixth hole 1-1-2-b and is welded with the right side plate 1-1-2 and the partition plate 1-1-3; the C-shaped sleeve 1-1-5 is arranged in the second opening 1-1-1-f and the fourth opening 1-1-2-f and is welded with the left side plate 1-1-1 and the right side plate 1-1-2; the left reinforcing plate 1-1-6 is welded with the left side plate 1-1-1 and the C-shaped sleeve 1-1-5, and a plurality of threaded holes are formed in the left reinforcing plate; the right reinforcing plate 1-1-7 is welded with the right side plate 1-1-2 and the C-shaped sleeve 1-1-5, and a plurality of threaded holes are formed in the right reinforcing plate; the two backing plates 1-1-8 are provided with a plurality of threaded holes which are respectively welded with the left side plate 1-1-1 and the right side plate 1-1-2; a plurality of threaded holes are formed in the two mounting seats 1-1-9, one mounting seat 1-1-9 is welded with the left side plate 1-1-1 and the partition plate 1-1-3, and one mounting seat 1-1-9 is welded with the right side plate 1-1-2 and the partition plate 1-1-3; one positioning block 1-1-10 is welded with the left side plate 1-1-1, one positioning block 1-1-10 is welded with the right side plate 1-1-2, the two positioning blocks 1-1-10 are symmetrical in position, and the relative position of the quick-change connector assembly 1 and the quick-change lug plate assembly 2 during butt joint is limited by respectively clamping and matching with the seventh opening 2-1-a and the eighth opening 2-2-a, so that accurate and reliable connection and safe operation are ensured; the first stop ring 1-1-11 is coaxial with the third hole 1-1-1-c, is welded with the left side plate 1-1-1, and is provided with a radial through hole for being penetrated by a fourth bolt 1-14-2; the second stop ring 1-1-12 is coaxial with the fourth hole 1-1-1-d and welded with the left side plate 1-1-1, and is provided with a radial through hole for the fifth bolt 1-15-2 to penetrate through.
Optionally, as shown in fig. 16, the first pin assembly 1-10 includes a second pin 1-10-1 and two second retainers 1-10-2; two ends of the second pin shaft 1-10-1 are respectively provided with a shaft groove; the second retainer ring 1-10-2 is arranged in the shaft groove of the second pin shaft 1-10-1 to prevent the second pin shaft 1-10-1 from shifting and falling off along the axial direction.
As shown in FIG. 17, the platen assembly 1-12 includes a platen 1-12-1 and a tab 1-12-2; the pressing plate 1-12-1 is provided with a through hole, a fifth opening 1-12-1-a and two sixth openings 1-12-1-b; the thickness of the adjusting sheet 1-12-2 is equal to or slightly less than the thickness of the shaft shoulders of the first pin shaft 1-7 and the third pin shaft 1-11, and through holes are formed in the adjusting sheet; the adjusting sheet 1-12-2 is welded or directly attached to one side of the pressing plate 1-12-1, and the through holes of the adjusting sheet 1-12-2 and the pressing plate 1-12-1 are coaxial.
As shown in fig. 18, the second pin assembly 1-14 includes a fourth pin 1-14-1, a fourth bolt 1-14-2 and a plurality of first nuts 1-14-3; the front end part of the fourth pin shaft 1-14-1 is provided with a radial through hole which is coaxial with the radial through hole on the first stop ring 1-1-11; the fourth bolt 1-14-2 penetrates through the fourth pin shaft 1-14-1 and the radial through hole in the first stop ring 1-1-11 to prevent the fourth pin shaft 1-14-1 from rotating around the axial direction or shifting along the axial direction to fall off; a plurality of first nuts 1-14-3 are screwed on the thread section of the fourth bolt 1-14-2 to prevent the fourth bolt 1-14-2 from shifting and falling off along the axial direction; the third pin shaft assembly 1-15 comprises a fifth pin shaft 1-15-1, a fifth bolt 1-15-2 and a plurality of second nuts 1-15-3; the front end part of the fifth pin shaft 1-15-1 is provided with a radial through hole which is coaxial with the radial through hole on the second stop ring 1-1-12; the fifth bolt 1-15-2 penetrates through the fifth pin shaft 1-15-1 and the radial through hole in the second stop ring 1-1-12 to prevent the fifth pin shaft 1-15-1 from rotating around the axial direction or shifting along the axial direction to fall off; the second nuts 1-15-3 are screwed on the thread sections of the fifth bolts 1-15-2, so that the fifth bolts 1-15-2 are prevented from shifting and falling off along the axial direction.
As shown in fig. 19, the fourth pin shaft assembly 2-4 comprises a sixth pin shaft 2-4-1, a sixth bolt 2-4-2 and a plurality of third nuts 2-4-3; a radial through hole is formed in the front end part of the sixth pin shaft 2-4-1 and is coaxial with the radial through hole in the third stop ring 2-3; the sixth bolt 2-4-2 penetrates through the sixth pin shaft 2-4-1 and a radial through hole in the third stop ring 2-3 to prevent the sixth pin shaft 2-4-1 from rotating around the axial direction or shifting along the axial direction to fall off; and a plurality of third nuts 2-4-3 are screwed on the thread section of the sixth bolt 2-4-2 to prevent the sixth bolt 2-4-2 from shifting and falling off along the axial direction.
As shown in fig. 20, the shaft seat assembly 1-1-4 comprises a shaft seat 1-1-4-1, a bearing 1-1-4-2 and two first retainer rings 1-1-4-3; the shaft seat 1-1-4-1 is provided with a through hole, and two ends of the through hole are respectively provided with a hole groove; the bearing 1-1-4-2 is arranged in a through hole of the shaft seat 1-1-4-1 to support and guide the movement of the bolt 1-8; the first retainer ring 1-1-4-3 is arranged in a hole groove of the shaft seat 1-1-4-1 to prevent the bearing 1-1-4-2 from shifting and falling off along the axial direction.
The specific application principle of the invention is as follows:
as shown in fig. 21 to 26, when the accessory with the quick-change lug plate assembly 2 is installed, an operator should ensure that the latch 1-8 of the quick-change coupler assembly 1 is in a fully retracted state, then operate an excavator arm to enable the C-shaped sleeve 1-1-5 of the quick-change coupler assembly 1 to be clamped with the fourth latch shaft assembly 2-4 of the quick-change lug plate assembly 2, and further adjust the external extension of the bucket cylinder to enable the quick-change coupler assembly 1 and the quick-change lug plate assembly 2 to be aligned in place under the positioning action of the positioning blocks 1-1-10; the rodless cavity of the hydraulic oil cylinder 1-4 is filled with liquid, so that a piston rod of the hydraulic oil cylinder 1-4 extends out to drive the transmission rod 1-9 to swing and the bolts 1-8 to extend out until the bolts 1-8 on the left side and the right side respectively penetrate through a sixteenth hole 2-1-d and a nineteenth hole 2-2-d on the quick-change lug plate component 2; and finally, the safety pin shaft assembly 3 is arranged in a fifteenth hole 2-1-c and an eighteenth hole 2-2-c of the quick-change lug plate assembly 2 in a penetrating manner (at the moment, the safety pin 3-1 is also positioned in the first opening 1-1-1-e and the third opening 1-1-2-e of the quick-change connector assembly 1), so that the safety protection effect is further realized.
When the accessory with the quick-change lug plate component 2 is disassembled, the operation is reversed according to the installation method, the safety pin shaft component 3 is firstly disassembled (the safety pin shaft component can penetrate through the first hole 1-1-1-a and the fifth hole 1-1-2-a of the quick-change joint component 1 when not used), then the rod cavity of the hydraulic oil cylinder 1-4 is filled with liquid, the piston rod of the hydraulic oil cylinder 1-4 is retracted, the drive rod 1-9 is driven to swing, the bolts 1-8 are retracted until the bolts 1-8 on the left side and the right side are respectively separated from the sixteenth hole 2-1-d and the nineteenth hole 2-2-d on the quick-change lug plate component 2, and the excavator arm is operated to separate the quick-change joint component 1 from the quick-change lug plate component 2, so that the accessory can be disassembled.
Compared with the prior art, the method for replacing the accessory by manpower is quicker and more convenient than the traditional method for replacing the accessory by manpower and the common mechanical quick connector in the market, and has less damage to the relevant connecting part of the working device; different from common hydraulic accessory quick connectors in the market, the hydraulic oil cylinder in the hydraulic excavator accessory quick connector only serves as a driving device to guide the plug pin to complete extending and retracting actions when the accessories are installed and disassembled, and cannot directly bear load force in the working process of the excavator, so that the overall structure is safer and more reliable; the safety hinge pin is arranged, the risk that an accessory is accidentally missed due to mistaken touch of an operator in the working process can be eliminated, and meanwhile, the safety hinge pin is reset when the accessory is not used, so that the accessory is prevented from being lost.
The invention also discloses an excavator, which comprises a connecting rod, a bucket rod and an accessory body, wherein the connecting rod and the bucket rod are connected with the accessory body through the hydraulic-driven excavator accessory quick connector.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than others, combinations of features of different embodiments are also meant to be within the scope of the invention and form different embodiments. For example, in the above embodiments, those skilled in the art can use the combination according to the known technical solutions and technical problems to be solved by the present application.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (13)
1. The utility model provides a hydraulic drive's excavator accessory quick connector which characterized in that:
the quick-change lug plate assembly comprises a quick-change connector assembly and a quick-change lug plate assembly;
the quick-change ear plate component is connected with the accessory;
the quick-change connector assembly comprises a connector body, two bolts, a driving device, a second pin shaft assembly and a third pin shaft assembly;
the tail end of the joint body is connected with the quick-change lug plate component in a clamping manner, and the upper part of the joint body is connected with a connecting rod and a bucket rod of the excavator through a second pin shaft component and a third pin shaft component respectively;
the driving device comprises a hydraulic oil cylinder, a movable block and two transmission rods;
the cylinder barrel of the hydraulic oil cylinder is fixedly arranged in the connector body, a piston rod of the hydraulic oil cylinder is hinged with the movable block, one ends of the two transmission rods are respectively hinged with the movable block, and the two transmission rods and the piston rod of the hydraulic oil cylinder form a Y-shaped structure;
the two bolts are respectively inserted into the two shaft seat assemblies positioned on the joint body and can do stretching and retracting movement along the axial direction of the shaft seat assemblies; the other ends of the two transmission rods are respectively hinged with the two bolts;
the driving device completes the extending and retracting actions of the bolt in the joint body, thereby realizing the connection and the disconnection of the quick-change joint component and the quick-change lug plate component.
2. The hydraulically driven excavator accessory quick connector of claim 1, wherein:
the movable block comprises two flat plates and a supporting part;
the two flat plates are connected through the supporting component after being arranged in a clearance way;
the piston rod penetrates through the two flat plates and is hinged through a first pin shaft;
one ends of the two transmission rods are respectively penetrated into the two flat plates and hinged through a third pin shaft;
the other ends of the two transmission rods penetrate into the two bolts respectively and are hinged through the first pin shaft assembly.
3. The hydraulically driven excavator accessory quick connector of claim 2, wherein:
the piston rod is provided with a shaft shoulder, and after the piston rod is hinged with the movable block, the side surfaces of the two flat plates are respectively propped against the shaft shoulder for realizing the limiting and positioning effects of the shaft shoulder on the movable block.
4. The hydraulically driven excavator accessory quick connector of claim 2, wherein:
a pressing plate assembly is fixed on one flat plate of the movable block and pressed on the end surfaces of one sides of the shaft shoulders of the first pin shaft and the two third pin shafts;
And the thicknesses of the shaft shoulders of the first pin shaft and the third pin shaft are the same.
5. The hydraulically driven excavator accessory quick connector of claim 4, wherein:
the pressure plate assembly comprises a pressure plate and an adjusting plate;
the pressing plate and the adjusting sheet are provided with a through hole respectively, the adjusting sheet is arranged on one side of the pressing plate, and the through holes of the pressing plate and the adjusting sheet are coaxial so that a third bolt penetrates through the pressing plate assembly and is connected with a threaded hole in the movable block;
the thickness of the adjusting sheet is equal to or slightly smaller than the thickness of the shaft shoulders of the first pin shaft and the third pin shaft;
and a fifth opening and two sixth openings are further formed in the pressing plate and respectively correspond to the first pin shaft and the two third pin shafts.
6. The hydraulically driven excavator accessory quick connector of claim 1, wherein:
the joint body comprises a left side plate, a right side plate, a partition plate, two shaft seat assemblies, a C-shaped sleeve, a first stop ring and a second stop ring;
the left side plate and the right side plate are kept parallel and are respectively fixed on the left side and the right side of the partition plate;
the two shaft seat assemblies are coaxially arranged on the left side plate and the right side plate;
the C-shaped sleeve is fixedly connected with the left side plate and the right side plate and is in clamping fit with a fourth pin shaft assembly on the quick-change ear plate assembly;
The first stop ring is connected with the left side plate, the second pin shaft assembly penetrates through the left side plate and the right side plate to be fixedly connected with the first stop ring, and the quick-change connector assembly is hinged to the connecting rod in an auxiliary mode;
the second stop ring is connected with the left side plate, the third pin shaft assembly penetrates through the left side plate and the right side plate to be fixedly connected with the second stop ring, and the quick-change connector assembly is hinged to the bucket rod in an auxiliary mode.
7. The hydraulically driven excavator accessory quick connector of claim 6, wherein:
the shaft seat assembly comprises a shaft seat, a bearing and two first check rings;
the shaft seat is provided with a through hole, and two ends of the through hole are respectively provided with a hole groove;
the bearing is arranged in the through hole of the shaft seat and used for supporting and guiding the movement of the bolt;
the first check ring is arranged in a hole groove of the shaft seat to prevent the bearing from shifting and falling off along the axial direction.
8. The hydraulically driven excavator accessory quick connector of claim 6, wherein:
the joint body also comprises two positioning blocks;
the two positioning blocks are symmetrically arranged on the outer walls of the left side plate and the right side plate, and the two positioning blocks are in clamping fit with the two openings in the quick-change lug plate assembly to limit the relative position of the quick-change connector assembly when the quick-change connector assembly is in butt joint with the quick-change lug plate assembly.
9. The hydraulically driven excavator accessory quick connector of claim 1, wherein:
the quick-change connector assembly comprises a left lug plate, a right lug plate, a third stop ring and a fourth pin shaft assembly;
the left ear plate and the right ear plate are kept parallel and fixed on the metal body;
the third stop ring is connected with the left lug plate, and the fourth pin shaft assembly penetrates through the left lug plate and the right lug plate and is fixedly connected with the third stop ring.
10. The hydraulically driven excavator accessory quick connector of any one of claims 1 to 9, wherein:
the safety pin shaft assembly is also included;
and the safety pin shaft assembly is inserted into the corresponding through hole of the quick-change lug plate assembly after the quick-change connector assembly is connected with the quick-change lug plate assembly.
11. The hydraulically driven excavator accessory quick connector of claim 10, wherein:
the safety pin shaft assembly comprises a safety pin and a lock pin;
the front end part of the safety pin is in a conical shape or a round table shape, and is provided with a radial through hole, and the rear end part is provided with a handle;
the safety pin is arranged in a protruding opening of the quick-change connector assembly after penetrating through the quick-change lug plate assembly, and the lock pin penetrates through a radial through hole in the front end of the safety pin.
12. The hydraulically driven excavator accessory quick connector of claim 11, wherein:
when the safety pin shaft assembly is not used, the safety pin penetrates through the quick-change connector assembly, and the lock pin penetrates through the radial through hole in the front end portion of the safety pin.
13. The utility model provides an excavator, includes connecting rod, dipper and the genus is specific, its characterized in that:
the link and stick are connected to the tool body by a hydraulic driven excavator accessory quick connector of any one of claims 1 to 12.
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| CN202110452530.XA CN112854328B (en) | 2021-04-26 | 2021-04-26 | Hydraulic drive's excavator accessory quick connector and excavator |
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| CN202110452530.XA CN112854328B (en) | 2021-04-26 | 2021-04-26 | Hydraulic drive's excavator accessory quick connector and excavator |
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| CN114319477A (en) * | 2022-03-14 | 2022-04-12 | 徐州巴特工程机械股份有限公司 | Hydraulic quick-change connector for excavator |
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