Double-lock quick-change connecting device and system

Abstract

The utility model belongs to the field of quick-change connecting devices, and particularly relates to a double-lock quick-change connecting device and a double-lock quick-change connecting system, which comprise a rear hook on a shell, a front hook in the shell and a multi-degree-of-freedom parallel mechanism on the outer wall of the shell, wherein the front hook is used for fixing a front shaft of the accessory through hydraulic locking and mechanical locking, the rear hook is used for fixing a rear shaft of the accessory through two times of mechanical locking, and a multi-degree-of-freedom parallel mechanism is further arranged, so that the multi-degree-of-freedom accessory operation requirement of the double-lock quick-change connecting device can be met. Compared with an existing front-and-back locking structure completed by means of gravity, the front-and-back locking structure is more reliable and stable, not prone to being affected by the working environment, simple in dismounting structure and high in flexibility.

Description

Technical Field

[0001] The utility model belongs to the field of quick-change connection devices, and in particular relates to a double-lock quick-change connection device and system. Background Art

[0002] Excavators can be equipped with different work accessories (such as hydraulic breakers, hydraulic shears, vibratory rammers, wood grabs, hydraulic rock drills, milling machines, ripper, etc.) to achieve different functions. In order to meet various work needs, excavator work accessories need to be frequently replaced during construction. The quick-change connection device allows the excavator to quickly and efficiently replace various work accessories, expand the excavator's functions, shorten the disassembly and assembly time, and improve work efficiency. The excavator double-lock quick-change connection device is manual, semi-automatic, and fully automatic; the fully automatic double-lock quick-change connection device is easy to use and simple to load and unload, but in the prior art, the fully automatic double-lock quick-change connection device has the following problems:

[0003] The rear hook locking system is dependent on the front hook locking system, and once the front hook locking system fails, the rear hook locking system will also fail.

[0004] The front hook mechanical locking clamp relies on gravity and is easily affected by the working environment and may fail.

[0005] The front hook locking hydraulic cylinder is directly loaded and has a low fatigue life.

[0006] It has few degrees of freedom and poor versatility, and cannot meet the needs of multi-degree-of-freedom attachment operations.

[0007] No redundant design, poor reliability.

[0008] The disassembly and assembly process is complicated and the flexibility is poor. Utility Model Content

[0009] The utility model provides a double-lock quick-change connection device and system to solve the problems of unstable structural design and low service life in the prior art.

[0010] In order to achieve the above purpose, the utility model proposes the following technical solutions:

[0011] A double-lock quick-change connection device, comprising a front hook, a hydraulic cylinder, a slide rail, a rear hook clamp, a first pin shaft, a rear hook clamp connecting rod, a housing, an electromagnetic clamp, a second pin shaft, and a rear hook;

[0012] The outer shell is a bottomless shell, and the slide rail, the first pin shaft and the second pin shaft are fixed on the inner wall of the outer shell;

[0013] The front hook is movably arranged on the slide rail, the hydraulic cylinder is respectively connected to the front hook and the housing, the rear hook clamp is connected to the rear hook clamp connecting rod, the rear hook clamp connecting rod is connected to the front hook, and the rear hook clamp rotates around the first pin shaft; the electromagnetic clamp rotates around the second pin shaft;

[0014] The bottoms of both sides of the shell are provided with rear hooks.

[0015] Preferably, the front hook is arranged on the slide rail via a slide block.

[0016] Preferably, the hydraulic cylinder is provided with a piston rod and a cylinder sleeve, the piston rod is connected to the front hook, and the cylinder sleeve is fixed to the outer shell.

[0017] Preferably, an electromagnetic module is provided on the inner wall of the shell, and the electromagnetic module is fixed on the inner wall of the shell.

[0018] Preferably, the electromagnetic module is an electromagnet.

[0019] Preferably, it also includes a multi-degree-of-freedom parallel mechanism, which is arranged on the top of the outer wall of the shell.

[0020] A double-lock quick-change connection system, the connection system comprising an attachment and the double-lock quick-change connection device;

[0021] The double-lock quick-change connection device is connected to the attachment through a housing.

[0022] Preferably, the housing further comprises a front axle of the attachment and a rear axle of the attachment, wherein the front axle of the attachment is arranged on the front hook; and the rear axle of the attachment is arranged on the rear hook.

[0023] Preferably, the housing is connected to the attachment via a front axle and a rear axle of the attachment.

[0024] The utility model is beneficial in that:

[0025] The utility model proposes a double-lock quick-change connecting device, in which a front hook and a rear hook are matched to fix the attachment, wherein the front hook fixes the front axle of the attachment by hydraulic locking and mechanical locking, and the rear hook fixes the rear axle of the attachment by two mechanical lockings. Compared with the existing front and rear locking structure that relies on gravity, it is more reliable and stable, and is not easily affected by the working environment. At the same time, the disassembly structure is simple and has high flexibility.

[0026] The connecting device is also provided with a multi-degree-of-freedom parallel mechanism, which can meet the multi-degree-of-freedom attachment operation requirements of the double-lock quick-change connecting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0028] In the attached picture:

[0029] Figure 1 It is a schematic diagram of a double-lock quick-change connection device;

[0030] Figure 2 It is a schematic diagram of the internal structure of a double-lock quick-change connection device;

[0031] Figure 3 It is an oblique schematic diagram of the internal structure of a double-lock quick-change connection device;

[0032] Figure 4 The utility model is a schematic diagram of a double-lock quick-change connection device. DETAILED DESCRIPTION

[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0034] The following detailed descriptions are all exemplary descriptions, and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as those generally understood by those skilled in the art to which the present invention belongs. The terms used in the present invention are only intended to describe specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0035] See also Figure 1 As shown, the utility model provides a double-lock quick-change connection device, including a front hook 1, a housing 11 and a multi-degree-of-freedom parallel mechanism 12.

[0036] The shell 11 is a curved bottomless shell, and a rear hook is disposed at the bottom of each of the two side surfaces. The opening direction of the rear hook is opposite to that of the front hook 1 .

[0037] The multi-degree-of-freedom parallel mechanism 12 is connected to the housing 11 and can adjust the position and posture of the housing 11 to meet different operating requirements.

[0038] like Figure 2 As shown, the front hook 1 is fixedly connected to the slider 2 and moves on the slide rail 3 through the slider 2; the hydraulic cylinder 4 is provided with a piston rod and a cylinder sleeve, the cylinder sleeve is fixed to the outer shell 11, and the piston rod is connected to the front hook 1; the rear hook clamp 6 is connected to the rear hook clamp connecting rod 5, the rear hook clamp connecting rod 5 is connected to the front hook 1, and the rear hook clamp 6 rotates around the first pin shaft 7; the electromagnetic module 10 is fixed on the inner wall of the outer shell 11, and the electromagnetic clamp 8 rotates around the second pin shaft 9.

[0039] The slide rail 3 , the first pin shaft 7 and the second pin shaft 9 are fixed inside the housing 11 .

[0040] The housing 11 is fixedly connected to the attachment via the attachment front shaft 13 and the attachment rear shaft 14 below.

[0041] like Figure 3 and Figure 4 As shown, the rear hook clamp 6 does not interfere with the attachment rear shaft 14 when rotating around the first pin shaft 7, and can lock the rear hook and the attachment rear shaft 14 when rotating to a certain position; the electromagnetic clamp 8 does not interfere with the rear hook clamp 6 when rotating around the second pin shaft 9, and can simultaneously lock the front hook 1 and the attachment front shaft 13 as well as the rear hook and the attachment rear shaft 14 when rotating to a certain position; the rear hook clamp 6 and the electromagnetic clamp 8 lock the rear hook and the attachment rear shaft 14 respectively without interfering with each other; the locking contact position of the front hook 1 and the electromagnetic clamp 8 is an arc, and the center of the arc of the locking contact position of the front hook 1 does not coincide with the center of the second pin shaft 9; the locking contact position of the front hook 1 and the electromagnetic clamp 8 has a certain range, and the specific locking contact position is determined according to the center distance of the loaded working attachment, and within this range, the electromagnetic clamp 8 can simultaneously lock the front hook 1 and the rear hook.

[0042] The front hook 1 moves on the slide rail 3 under the action of the hydraulic cylinder 4, and the front hook 1 is hydraulically locked after reaching the locking position; the rear hook clamping plate connecting rod 5 moves with the front hook 1, so that the rear hook clamping plate 6 rotates around the first pin shaft 7, thereby realizing the primary mechanical locking of the rear hook; after the front hook 1 reaches the locking position, the electromagnetic module 10 loses power and releases the electromagnetic clamping plate 8, at this time, the electromagnetic clamping plate 8 rotates around the second pin shaft 9, realizing the mechanical locking of the front hook 1, and realizing the secondary mechanical locking of the rear hook.

[0043] In a specific implementation, the electromagnetic module is an electromagnet.

[0044] The utility model also proposes a double-lock quick-change connection system, which includes the above-mentioned double-lock quick-change connection device and accessories; the connection device is connected to the accessory through the shell 11, and the shell 11 is fixedly connected to the accessory through the lower front axle 13 and the rear axle 14 of the accessory.

[0045] In a specific embodiment, the attachments are hydraulic breaker, hydraulic shear, vibratory rammer, wood grab, hydraulic rock drill, milling machine, ripper and other operating attachments.

[0046] The locking process of the multi-degree-of-freedom double-lock quick-change connection device is specifically as follows: the front hook 1 moves on the slide rail 3 under the action of the piston rod of the hydraulic cylinder 4, and after reaching the locking position, the front hook 1 and the front shaft 13 of the accessory are hydraulically locked; the rear hook clamp connecting rod 5 moves with the front hook 1, so that the rear hook clamp 6 rotates around the first pin shaft 7, thereby realizing a primary mechanical locking of the rear hook and the rear shaft 14 of the accessory; after the front hook 1 reaches the locking position, the electromagnetic module 10 loses power to release the electromagnetic clamp 8, and the electromagnetic clamp 8 rotates around the second pin shaft 9, thereby realizing the mechanical locking of the front hook 1 and the front shaft 13 of the accessory, and realizing the secondary mechanical locking of the rear hook and the rear shaft 14 of the accessory.

[0047] Step 3, unloading the attachment. First, flip the multi-degree-of-freedom double-lock quick-change connection device and the attachment, so that the electromagnetic clamping plate 8 contacts the electromagnetic module 10, and release the mechanical lock between the front hook 1 and the front shaft 13 of the attachment, and the secondary mechanical lock between the rear hook and the rear shaft 14 of the attachment. Then, slowly flip it back and place the attachment on the ground, and then retract the piston rod of the hydraulic cylinder 4 to release the hydraulic lock between the front hook 1 and the front shaft 13 of the attachment; the rear hook clamping plate connecting rod 5 moves with the front hook 1, so that the rear hook clamping plate 6 rotates around the first pin 7, and the primary mechanical lock between the rear hook and the rear shaft 14 of the attachment is released to achieve unloading of the attachment.

[0048] It is known from common technical knowledge that the present invention can be implemented by other embodiments that do not deviate from its spirit or essential features. Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or replaced by equivalents, and any modification or equivalent replacement that does not depart from the spirit and scope of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A double-lock quick-change connection device, characterized in that: It includes a front hook, a hydraulic cylinder, a slide rail, a rear hook clamp, a first pin shaft, a rear hook clamp connecting rod, a shell, an electromagnetic clamp, a second pin shaft, and a rear hook; The outer shell is a bottomless shell, and the slide rail, the first pin shaft and the second pin shaft are fixed on the inner wall of the outer shell; The front hook is movably arranged on the slide rail, the hydraulic cylinder is respectively connected to the front hook and the housing, the rear hook clamp is connected to the rear hook clamp connecting rod, the rear hook clamp connecting rod is connected to the front hook, and the rear hook clamp rotates around the first pin shaft; the electromagnetic clamp rotates around the second pin shaft; The bottoms of both sides of the shell are provided with rear hooks.

2. A double-lock quick-change connection device according to claim 1, characterized in that: The front hook is arranged on the slide rail through a slide block.

3. A double-lock quick-change connection device according to claim 1, characterized in that: The hydraulic cylinder is provided with a piston rod and a cylinder sleeve, the piston rod is connected with the front hook, and the cylinder sleeve is fixed with the outer shell.

4. A double-lock quick-change connection device according to claim 1, characterized in that: An electromagnetic module is arranged on the inner wall of the shell, and the electromagnetic module is fixed on the inner wall of the shell.

5. A double-lock quick-change connection device as claimed in claim 4, characterized in that: The electromagnetic module is an electromagnet.

6. A double-lock quick-change connection device according to claim 1, characterized in that: It also includes a multi-degree-of-freedom parallel mechanism, which is arranged on the top of the outer wall of the shell.

7. A double-lock quick-change connection system, characterized in that: The connection system comprises an attachment and a double-lock quick-change connection device according to any one of claims 1 to 6; The double-lock quick-change connection device is connected to the attachment through a housing.

8. A dual lock quick change connection system as claimed in claim 7, characterized in that: The housing also includes a front axle and a rear axle of the attachment. The front axle is arranged on the front hook; the rear axle is arranged on the rear hook.

9. A dual lock quick change connection system as claimed in claim 8, characterized in that: The shell is connected to the attachment via the attachment front axle and the attachment rear axle.

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