CN114809154A

CN114809154A - Quick connector

Info

Publication number: CN114809154A
Application number: CN202210410053.5A
Authority: CN
Inventors: 历娜; 石硕; 王金涛; 王全永
Original assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Current assignee: Xuzhou XCMG Excavator Machinery Co Ltd
Priority date: 2022-04-19
Filing date: 2022-04-19
Publication date: 2022-07-29
Anticipated expiration: 2042-04-19
Also published as: CN114809154B

Abstract

The invention discloses a quick connector which comprises a cavity, wherein a connecting shaft connected with a working device is arranged at the top of the cavity, a fixed claw is arranged at one end of the bottom of the cavity, a clamping opening is formed in the other end of the bottom of the cavity, a movable claw rotating around the clamping opening is arranged at the clamping opening, the cavity is in sliding connection with the movable claw through a mutually meshed rail structure, and the movable claw is positioned on the cavity through a safety pin. The quick connector enables the movable hook claw to slide in a reciprocating mode through the rail structures which are meshed with each other and slide, hooking and releasing of machines are achieved, the structure is simple, labor is saved, reliability is achieved, in addition, the machine rear shaft is used as a rotating shaft in the sliding process, reciprocating swing is not needed to be conducted to a large extent, the axial line of the movable hook claw in the reciprocating sliding mode is overlapped with the axial line of the machine rear shaft to be hooked, interference with the machines is avoided, when the machine shaft is hooked and released, the safety pin is always in an inserting and placing state, and the safety pin is prevented from being lost.

Description

Quick connector

Technical Field

The invention belongs to the technical field of engineering machinery excavators, and particularly relates to a quick connector of engineering machinery.

Background

Along with the requirement on diversified operation of the excavator, the quick connector is widely applied, and is used as a connecting machine tool of the excavator and operation devices (such as a bucket, a breaking hammer and a hydraulic shear), so that the quick switching and installation of various operation devices are realized, the waste of time and labor caused by replacing accessories to disassemble a pin shaft is saved, and the working efficiency is improved. At present, a mechanical quick connector is mostly adopted for a small-tonnage excavator.

At present, a common mechanical quick connector adopts a spring latch type, and adopts spring force to replace oil cylinder driving force. The movable claw is pushed to a proper position by screwing or unscrewing the spring, and the machine shaft is hooked. The spring force always pushes the movable claw to keep locking the rear shaft of the machine in the working process of the mechanical quick connector. The hydraulic quick connector is connected and separated with an accessory by driving a locking mechanism by a hydraulic oil cylinder. The bucket is arranged on an original bucket mounting hinge point (namely a bucket rod shaft and a connecting rod) through a pin shaft, and a movable claw and a fixed claw are connected with the pin shaft of the bucket or other operation devices.

The problem of current quick connector lies in, and movable hook is inboard, and when the movable hook was got the machines rear axle by inboard outside colluding, to the operation device that equals the interaxial distance, also can cause because the height difference of well bent plate and interfere with movable hook for quick connector can't work. The mechanical quick connector has high requirements on the spring, the structure is complex, the required force is large when the knob at the end of the spring is rotated, the operation is complex, and the safety pin shaft is easy to lose.

Disclosure of Invention

The invention aims to overcome the defects, and provides a quick connector which is simple in structure, low in cost and capable of avoiding the interference phenomenon between a movable claw and a machine tool.

In order to realize the purpose, the invention is realized by the following technical scheme:

the quick connector comprises a cavity, wherein a connecting shaft for connecting a working device is arranged at the top of the cavity, a fixed claw is arranged at one end of the bottom of the cavity, a clamping opening is formed in the other end of the bottom of the cavity, a movable claw rotating around the axis of the clamping opening is arranged at the clamping opening, the cavity is in sliding connection with the movable claw through mutually meshed track structures, and the movable claw is positioned on the cavity through a safety pin.

Furthermore, the connecting shaft comprises a first connecting shaft and a second connecting shaft which are respectively used for being connected with a bucket rod and a connecting rod of the working device.

Further, the track structure comprises a track and a convex track matched with the track, the track can be specifically arranged on the cavity, and the convex track is arranged on the movable claw; or the track is arranged on the movable claw, and the convex track is arranged on the cavity; the combination of the track and the convex track only needs to satisfy the condition that the movable hook claw can slide in a reciprocating way.

Further, the movable claw comprises a driving part and a claw, and the driving part pushes the claw to slide.

Further, the quick connector may be a mechanical quick connector or a hydraulic quick connector.

Furthermore, when the quick connector is a mechanical quick connector, the movable hook is of a wrench type, the driving piece is a handle rod connected with the hook, and the handle rod is pushed and pulled to drive the hook so as to complete hooking and releasing of the machine tool. The movable hook claw is provided with a plurality of positioning holes, the cavity is provided with fixing holes, and when the handle lever pushes the hook claw to slide to different positions, the safety pin is connected with the positioning holes and the fixing holes in the cavity to position the movable hook claw.

Still further, the handle pole also can be other shapes, and the machine of colluding is realized getting and releases to the push-and-pull handle pole, and is laborsaving reliable.

Furthermore, the positions and the number of the positioning holes and the fixing holes can be adjusted according to the actual application requirements. When the machine shaft is hooked and released, the safety pin is always in an inserting state, only the inserting holes are different, and the safety pin cannot be lost.

Furthermore, when the quick connector is a hydraulic quick connector, an oil cylinder is arranged in the cavity, the driving piece is an ear plate connected with the hook claw, and the ear plate is connected with the oil cylinder to drive the movable hook claw by the oil cylinder. One side of the cavity, which is close to the fixed hook, is provided with an oil cylinder root installation shaft hole, and the lug plate is provided with an oil cylinder installation hole for installing an oil cylinder. The lug plate is provided with a notch, the cavity is provided with a fixing hole, and the safety pin is connected with the notch and the fixing hole on the cavity to position the movable hook claw. When the movable claw is in an initial state, the safety pin is inserted into the fixing hole, and after the movable claw hooks the rear shaft of the machine, the safety pin is arranged in the notch, so that the failure of the oil cylinder can be prevented, the movable claw retracts, the rear shaft of the machine is loosened, and danger is caused.

Furthermore, the cavity and the movable hook claw can be structural components or an integral casting and forging piece.

When the hook is used, the fixed hook claw and the movable hook claw are respectively used for hooking a front shaft and a rear shaft of the machine tool. When the fixed claw hooks the front shaft of the machine, the quick connector rotates around the shaft of the machine through the fixed claw so that the rear shaft of the machine falls into the clamping opening, and therefore the movable claw can hook the rear shaft of the machine rapidly to realize connection of the machine. The whole movable claw only rotates around the axis of the clamping opening in the process of sliding along the track, and the rotating shaft of the movable claw is the rear shaft of the machine tool without swinging back and forth to a large extent, so that the interference with the machine tool is avoided.

Compared with the prior art, the invention has the beneficial effects that:

the quick connector enables the movable hook claw to slide in a reciprocating manner through the mutually meshed sliding track structure, so that the hooking and releasing of the machine tool are realized, the structure is simple, labor is saved, reliability is realized, in addition, the machine tool rear shaft is used as a rotating shaft in the sliding process, the reciprocating swing is not required to be carried out to a large extent, the axial line of the reciprocating sliding of the movable hook claw is superposed with the axial line of the machine tool rear shaft to be hooked, and the interference with the machine tool is avoided.

When the quick connector hooks and releases the machine shaft, the safety pin is always in an inserting state, so that the safety pin is prevented from being lost.

Drawings

Fig. 1 is a schematic structural view of a mechanical quick connector according to embodiment 1;

FIG. 2 is a schematic structural view of the chamber according to embodiment 1;

FIG. 3 is a schematic structural view of a movable hook according to embodiment 1;

FIG. 4 is a schematic structural view showing an operating state of the mechanical quick connector according to embodiment 1;

fig. 5 is a schematic structural view of the hydraulic quick connector according to embodiment 2;

FIG. 6 is a schematic structural view of the chamber according to embodiment 2;

FIG. 7 is a schematic structural view of a movable hook according to embodiment 2;

fig. 8 is a schematic structural view of the hydraulic quick connector according to embodiment 2 showing a state where the pin is released.

In the figure: 1-cavity, 11-fixed hook, 12-rail, 13-fixed hole, 14-clamping opening, 15-oil cylinder root installation shaft hole, 2-connecting shaft I, 3-connecting shaft II, 4-movable hook, 41-handle rod, 42-initial positioning hole, 43-convex rail, 44-hook, 45-working positioning hole, 46-lug plate, 461-oil cylinder installation hole, 462-notch, 5-safety pin, 6-oil cylinder, 7-machine front shaft and 8-machine rear shaft.

Detailed Description

Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings and specific examples.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

The mechanical quick connector shown in fig. 1-4 comprises a cavity 1, wherein a first connecting shaft 2 and a second connecting shaft 3 are arranged at the top of the cavity 1 and are respectively used for connecting the quick connector with a bucket rod and a connecting rod of a working device; one end of the bottom of the cavity 1 is provided with a fixed claw 11 for hooking the front shaft 7 of the machine tool, the other end of the bottom of the cavity 1 is provided with a clamping opening 14, and a movable claw 4 rotating around the clamping opening 14 is arranged at the clamping opening 14.

As shown in fig. 2, a rail 12 is arranged on the cavity 1 above the clamping opening 14, and a fixing hole 13 is arranged on the cavity 1 above the rail 12 for positioning the movable claw 4 on the cavity 1 through the safety pin 5.

As shown in fig. 3, the movable hook 4 is of a wrench type and comprises a handle rod 41 and a hook 44, a protruding rail 43 engaged with the rail 12 on the cavity 1 is arranged above the hook 44, the protruding rail 43 can slide back and forth along the rail 12, an operator can push and pull the handle rod 41 to make the movable hook 4 slide back and forth along the rail 12 to hook or release the rear shaft 8 of the implement, when the fixed hook 11 hooks the front shaft 7 of the implement, the quick connector rotates around the front shaft 7 of the implement through the fixed hook 11 to make the rear shaft 8 of the implement fall into the 14 clamp, so that the movable hook 4 can hook the rear shaft 8 of the implement quickly to connect the implement; the upper part of the convex rail 43 is provided with a starting positioning hole 42 and a working positioning hole 45.

When the safety pin 5 sequentially passes through the fixing hole 13 and the initial positioning hole 42 of the cavity 1 to position the movable claw 4, which is the reset position of the movable claw 4, after the operator pushes the handle lever 41 to hook the rear shaft 8 of the machine tool, the safety pin 5 sequentially passes through the fixing hole 13 and the working positioning hole 45 of the cavity 1 to position the movable claw 4, as shown in fig. 4.

Example 2

As shown in fig. 5-8, the hydraulic quick connector includes a cavity 1, and a first connecting shaft 2 and a second connecting shaft 3 are disposed at the top of the cavity 1, and are respectively used for connecting the quick connector with a bucket rod and a connecting rod of a working device; the hydraulic lifting device is characterized in that one end of the bottom of the cavity 1 is provided with a fixed claw 11 for hooking a front shaft 7 of a machine tool, the other end of the bottom of the cavity 1 is provided with a clamping opening 14, a movable claw 4 rotating around the clamping opening 14 is arranged at the position of the clamping opening 14, and an oil cylinder 6 for driving the movable claw 4 to reciprocate is further arranged in the cavity 1.

As shown in fig. 6, a rail 12 is arranged on the cavity 1 above the clamping opening 14, a fixing hole 13 is arranged on the cavity 1 above the rail 12 and used for placing the safety pin 5, and an oil cylinder root mounting shaft hole 15 is arranged on one side of the cavity 1 close to the fixing claw 11 and used for mounting the oil cylinder 6.

As shown in fig. 7, the movable claw 4 includes a claw 43 and an ear plate 46 connected to the claw 43, the ear plate 46 is provided with a cylinder mounting hole 461 for connecting the cylinder 6 to drive the movable claw 4 by the cylinder 6, a protruding rail 43 engaged with the rail 12 on the cavity 1 is provided above the claw 44, the cylinder 6 drives the ear plate 46 to push the protruding rail 43 to slide back and forth along the rail 12, and the ear plate 46 is further provided with a notch 462.

When the movable hook 4 is in the initial state, the safety pin 5 is inserted in the fixing hole 13, as shown in fig. 8; after the movable claw 4 hooks the rear shaft 8 of the machine, the safety pin 5 is arranged in the notch 462, so that the failure of the oil cylinder 6 can be prevented, the movable claw 4 retracts, the rear shaft 8 of the machine is loosened, and the danger is caused.

Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and technical principles of the described embodiments, and such modifications and variations should also be considered as within the scope of the present invention.

Claims

1. The quick connector is characterized by comprising a cavity, wherein a connecting shaft for connecting a working device is arranged at the top of the cavity, a fixed claw is arranged at one end of the bottom of the cavity, a clamping opening is formed in the other end of the bottom of the cavity, a movable claw rotating around the axis of the clamping opening is arranged at the clamping opening, the cavity is in sliding connection with the movable claw through mutually-meshed track structures, and the movable claw is positioned on the cavity through a safety pin.

2. The quick connector of claim 1, wherein the connecting shaft comprises a first connecting shaft and a second connecting shaft, and the first connecting shaft and the second connecting shaft are respectively used for connecting a bucket rod and a connecting rod of a working device.

3. The quick connector of claim 1, wherein the track structure comprises a track and a protruding rail engaged with the track, the track is disposed on the cavity or the movable finger, and the corresponding protruding rail is disposed on the movable finger or the cavity to enable the movable finger to slide back and forth.

4. The quick connector of claim 3, wherein the movable fingers include an actuating member and fingers, the actuating member urging the fingers to slide.

5. The quick connector of claim 4, wherein the quick connector is a mechanical quick connector and the driving member is a lever connected to the fingers, the lever being pushed and pulled to effect actuation of the fingers.

6. The quick connector of claim 5, wherein the movable finger has a plurality of positioning holes, the cavity has a fixing hole, and the safety pin is used to connect the positioning holes with the fixing holes of the cavity to position the movable finger when the handle lever pushes the finger to slide to different positions.

7. The quick connector according to claim 4, wherein the quick connector is a hydraulic quick connector, the cavity is provided with an oil cylinder, the driving member is an ear plate connected with the hook, and the ear plate is connected with the oil cylinder to drive the movable hook by the oil cylinder.

8. The quick connector of claim 7, wherein a cylinder root mounting hole is formed in the cavity on a side thereof adjacent to the fixed hook, and a cylinder mounting hole is formed in the lug plate.

9. The quick connector of claim 7, wherein the ear plate has a notch, the cavity has a securing hole, and the safety pin engaging notch and the securing hole of the cavity position the movable finger.

10. The quick connector of claim 1 wherein the cavity and moveable fingers are a structural assembly or a unitary cast.