CN112227439A - Normally closed quick-change connector for excavator - Google Patents
Normally closed quick-change connector for excavator Download PDFInfo
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- CN112227439A CN112227439A CN202011084509.0A CN202011084509A CN112227439A CN 112227439 A CN112227439 A CN 112227439A CN 202011084509 A CN202011084509 A CN 202011084509A CN 112227439 A CN112227439 A CN 112227439A
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- 230000002146 bilateral effect Effects 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims 1
- 238000009434 installation Methods 0.000 description 11
- 230000006872 improvement Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 2
- 241000270728 Alligator Species 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Classifications
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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
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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
- E02F3/3622—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat with a hook and a locking element acting on a pin
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Shovels (AREA)
Abstract
The invention discloses a normally closed excavator quick-change connector which comprises side plate parts and a locking control part, wherein the side plate parts are arranged in a bilateral symmetry mode, and the locking control part is arranged between the two side plate parts; the locking control part comprises a locking hydraulic cylinder, a swing connecting rod and a mechanical locking assembly, the rear end of the locking hydraulic cylinder is installed in a mode that a hook body of a rear locking hook structure is hinged, the front end of the locking hydraulic cylinder is installed in a mode that the top end of the swing connecting rod is hinged, the rod body of the swing connecting rod is installed in a hinged mode on a side plate part, the mechanical locking assembly comprises a locking hook and a locking spring, the hook body of the locking hook is installed in a hinged mode on the side plate part, the front portion of the locking hook is a U-shaped hook structure with a downward opening and is arranged, the rear end of the locking hook is installed in a hinged mode with the bottom end of. The front lock hook structure of the quick-change connector of the normally closed excavator can be always in a mechanical locking state, and therefore the purpose that the locking hydraulic cylinder cannot fall off even if leakage failure occurs and the operation machine cannot fall off is achieved.
Description
Technical Field
The invention relates to a quick-change connector, in particular to a normally closed excavator quick-change connector suitable for an excavator, and belongs to the technical field of excavator machines.
Background
With the increasing development of excavator technology, the excavator has been expanded from the traditional function of excavating, crushing and backfilling by a bucket to the function of more than 10 functions of earth boring, vibration tamping, alligator pliers breaking, grapple clamping, loosening soil, rolling, tunneling, rock cutting and the like by installing different operation machines, and the use value and the use range of the excavator are greatly improved. In order to meet the operation requirements, the operation machines and tools need to be frequently replaced in the construction process, and the quick-change connector (also called as a quick-change connector of the excavator) of the excavator can enable the excavator to be quickly replaced by various operation machines and tools, so that the excavator is multipurpose, the hoisting and dismounting time is shortened, the working efficiency is improved, and resources are saved.
The quick-change connector of the excavator is generally divided into two types, namely a mechanical quick-change connector and a hydraulic quick-change connector, the hydraulic quick-change connector is also divided into two structural types, namely a latch hook type and a latch pin type, the latch hook type hydraulic quick-change connector is connected with a working machine in a mode of adopting a front latch hook and a rear latch hook (generally comprising a front fixed latch hook and a rear movable latch hook or comprising a front fixed latch hook and a rear movable latch wedge), and the rear movable latch hook or the rear movable latch wedge is directly pushed by a locking hydraulic cylinder to move towards a direction far away from the front fixed latch hook so as to lock a front connecting pin shaft and a rear connecting pin shaft of the working. The front fixed lock hook of the lock hook type hydraulic quick-change connector with the traditional structure is usually a U-shaped groove structure with an opening facing the front, and the locking force completely depends on the locking hydraulic cylinder, so that the frequent changing load of the operation machine in the operation process directly acts on the locking hydraulic cylinder, the service life of the locking hydraulic cylinder is easily reduced, and the unhooking phenomenon that a connecting pin shaft of the operation machine drops from the front fixed lock hook or the rear movable lock hook or the front fixed lock hook or the rear movable lock wedge is easily caused under the condition that the locking hydraulic cylinder is leaked and failed, so that the falling accident of the operation machine is further caused.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a quick-change connector of a normally closed excavator, wherein after the quick-change connector is connected with a working machine and locked, a front locking hook structure can be always in a mechanical locking state, and therefore, the purposes that the working machine cannot fall off even if a locking hydraulic cylinder is leaked and fails are achieved.
In order to achieve the aim, the quick-change connector of the normally closed excavator comprises side plate parts which are arranged in a bilateral symmetry mode and a locking control part arranged between the two side plate parts;
the side plate parts are fixedly connected through a connecting plate to form a frame structure, and bucket hydraulic cylinder mounting through holes matched with mounting pin shafts of the bucket hydraulic cylinders and bucket rod mounting through holes matched with mounting pin shafts of bucket rods of the excavator are formed in the upper parts of the side plate parts at intervals along the front-back direction; the front lower part of the side plate part is provided with a front lock hook structure, the front lock hook structure is a U-shaped groove structure with an opening facing right ahead, the U-shaped groove structure penetrates through the side plate part along the left-right direction, and the width dimension of the U-shaped groove structure is in clearance fit with the outer diameter dimension of a front mounting pin shaft of an operating machine; the rear part of the side plate part is provided with a rear lock hook structure, the rear lock hook structure is a hook body structure with a U-shaped hook opening facing backwards, the top of the rear lock hook structure is hinged and installed on the side plate part, a limiting and stopping component capable of limiting the backward swinging angle of the rear lock hook structure is fixedly arranged on the side plate part corresponding to the rear lock hook structure, and the width dimension of the U-shaped hook opening of the rear lock hook structure is in clearance fit with the outer diameter dimension of a rear mounting pin shaft of an operating machine;
the locking control part comprises a locking hydraulic cylinder, a swinging connecting rod and a mechanical locking assembly;
the rear end of a locking hydraulic cylinder which is arranged in a telescopic manner along the front-rear direction is hinged with a hook body of a rear lock hook structure, and the front end of the locking hydraulic cylinder is hinged with the top end of a swinging connecting rod;
a rod body of a swinging connecting rod which is obliquely arranged in the front-back direction is hinged and installed on the side plate part through a hinge shaft I, and the hinge shaft I is positioned at the back upper part of the U-shaped groove structure of the front lock hook structure;
the mechanical locking assembly comprises a locking hook and a locking spring; the locking hook which swings up and down is arranged behind a U-shaped groove structure of the front lock hook structure, a hook body of the locking hook is hinged and installed on the side plate part through a hinge shaft II, the hinge shaft II is located below the hinge shaft I, the front part of the locking hook is a U-shaped hook structure which is arranged corresponding to the U-shaped groove structure of the front lock hook structure and provided with a downward opening, the size of the hook of the U-shaped hook structure is matched with the outer diameter size of a front installation pin shaft of an operating machine, and the rear end of the locking hook is hinged and installed with the bottom end of the swing connecting rod through a hinge shaft III; the locking spring is installed between side plate portion and locking hook, and during normal locking state, the locking spring makes the U type crotch structure of locking hook be in the block state of pressing close to the U type groove structure of preceding locking hook structure all the time.
As a further improvement scheme of the invention, when the U-shaped hook structure of the locking hook is in a clamping state close to the U-shaped groove structure of the front locking hook structure, the hinge center of the hinge shaft I is positioned above the hinge center of the hinge shaft II, the hinge center of the hinge shaft III is positioned behind and below the hinge center of the hinge shaft I, the hinge center of the hinge shaft III is positioned behind and above the hinge center of the hinge shaft II, and the hinge position of the hinge shaft III at the rear end of the locking hook or the hinge position of the hinge shaft III at the bottom end of the swinging connecting rod is provided with a long round through hole capable of allowing the hinge shaft III to slide up and.
As a further improvement of the invention, a locking hook locking and positioning plate fixedly arranged on the side plate part is arranged below the U-shaped groove structure of the front locking hook structure, and the locking spring enables the U-shaped hook structure of the locking hook to abut against the locking hook locking and positioning plate.
As a preferred scheme of the invention, the locking spring is of a torsion spring structure, the locking spring of the torsion spring structure is sleeved on the hinge shaft ii, one torsion leg end of the locking spring of the torsion spring structure abuts against the side plate part, and the other torsion leg abuts against the locking hook.
As a further improvement scheme of the invention, a locking hook locking and positioning plate fixedly arranged on the side plate part is arranged below the U-shaped groove structure of the front locking hook structure, and a locking spring enables the U-shaped hook structure of the locking hook to abut against the locking hook locking and positioning plate; one twisting foot end of the locking spring of the torsion spring structure abuts against the locking hook locking positioning plate, and the other twisting foot abuts against the locking hook.
As a further improvement scheme of the invention, the swing connecting rods are arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder, hinge shafts I of the two swing connecting rods are respectively hinged on side plate parts arranged in bilateral symmetry, the top ends of the two swing connecting rods are hinged with the front end of the locking hydraulic cylinder through the same locking hydraulic cylinder mounting shaft, and the two swing connecting rods and the locking hydraulic cylinder mounting shaft jointly enclose a gantry structure.
As a further improvement scheme of the invention, the locking hooks are arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder, the two locking hooks are fixedly connected into a locking frame structure through a connecting beam, hinge shafts II of the two locking hooks are respectively hinged on the bilaterally symmetrically arranged side plate parts, and the rear ends of the two locking hooks are respectively hinged with the bottom ends of two swinging connecting rods of the gantry structure through hinge shafts III.
As a further improvement scheme of the invention, the locking hooks are arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder, the two locking hooks are fixedly connected into a locking frame structure through a connecting beam, and hinge shafts II of the two locking hooks are respectively hinged on the lateral plate parts arranged in bilateral symmetry.
Compared with the prior art, when the quick-change connector of the normally-closed excavator is used for installing the operation equipment, the rear end of the locking hydraulic cylinder is firstly pulled and then the latch hook structure swings and opens in the retraction process of the locking hydraulic cylinder, after the rear latch hook structure contacts the limiting stop component, the front end of the locking hydraulic cylinder pulls the swinging connecting rod to enable the swinging connecting rod to swing around the axis of the hinge shaft I, the locking hook is driven by the hinge shaft III to overcome the elasticity of the locking spring and rotate along the hinge center of the hinge shaft II in the swinging process of the swinging connecting rod, after the locking hydraulic cylinder is completely retracted, the U-shaped hook structure of the locking hook is in the abdicating state of turning and opening, the locking hydraulic cylinder is controlled to extend out after the front mounting pin shaft and the rear mounting pin shaft of the operation equipment are clamped, the front end of the locking hydraulic cylinder pushes the swinging connecting rod to enable the swinging connecting rod to reset and rotate, and the locking hook resets and rotates along the hinge center And on the mounting pin shaft, the rear end of the locking hydraulic cylinder pushes the rear locking hook structure to swing, so that the U-shaped hook opening of the rear locking hook structure is hooked and sleeved on the rear mounting pin shaft of the operation machine, and the locking of the operation machine is completed. When the locking mechanism is in a locking state, even if the locking hydraulic cylinder is leaked and fails, the U-shaped hook structure of the locking hook can be always clamped on the front mounting pin shaft of the operation machine under the action of the reset elastic force of the locking spring, so that the operation machine is prevented from falling off.
Drawings
FIG. 1 is a schematic three-dimensional structure from an upper left perspective of the present invention with the left side panel portion removed;
FIG. 2 is a schematic three-dimensional structure from a left front perspective of the present invention with the left side panel portion removed;
FIG. 3 is a schematic view of the locking hook of the present invention in an open position;
fig. 4 is a schematic structural view of the locking hook of the present invention in a locked state.
In the figure: 1. side plate portion, 11, spacing locking part, 12, locking hook locking locating plate, 2, preceding latch hook structure, 3, back latch hook structure, 4, locking hydraulic cylinder, 5, swing connecting rod, 51, articulated shaft I, 6, locking hook, 61, articulated shaft II, 62, articulated shaft III, 7, locking spring.
Detailed Description
The present invention will be further explained with reference to the drawings (hereinafter, the left direction of fig. 3 and 4 will be described as the front direction).
As shown in fig. 1 and 2, the quick-change connector of the normally closed excavator comprises side plate parts 1 which are arranged in bilateral symmetry and a locking control part arranged between the two side plate parts.
The side plate part 1 is fixedly connected through a connecting plate to form a frame structure, and tipping bucket hydraulic cylinder mounting through holes matched with a tipping bucket hydraulic cylinder mounting pin shaft and bucket rod mounting through holes matched with an excavator bucket rod mounting pin shaft are arranged at the upper part of the side plate part 1 at intervals along the front-back direction; a front lock hook structure 2 is arranged at the front lower part of the side plate part 1, the front lock hook structure 2 is a U-shaped groove structure with an opening facing right ahead, the U-shaped groove structure penetrates through the side plate part along the left and right directions, and the width size of the U-shaped groove structure is in clearance fit with the outer diameter size of a front mounting pin shaft of an operating machine; the rear part of the side plate part 1 is provided with a rear lock hook structure 3, the rear lock hook structure 3 is a hook body structure with a U-shaped hook opening facing backwards, the top of the rear lock hook structure 3 is hinged on the side plate part 1, a limiting and stopping component 11 capable of limiting the backward swinging opening angle of the rear lock hook structure 3 is fixedly arranged on the side plate part 1 corresponding to the rear lock hook structure 3, the rear lock hook structure 3 can swing back and forth along the hinged center, the limiting and stopping component 11 can be arranged in front of the rear lock hook structure 3 and behind the rear lock hook structure 3, the limiting and stopping component 11 can be a limiting pin structure or a limiting block structure as shown in figures 1 and 2, and the width dimension of the U-shaped hook opening of the rear lock hook structure 3 is in clearance fit with the outer diameter dimension of a mounting pin shaft behind an operating machine tool.
The locking control part comprises a locking hydraulic cylinder 4, a swinging connecting rod 5 and a mechanical locking assembly;
the rear end of a locking hydraulic cylinder 4 which is telescopically arranged along the front-back direction is hinged with the hook body of the rear lock hook structure 3, and the front end of the locking hydraulic cylinder 4 is hinged with the top end of the swinging connecting rod 5;
a rod body of the swinging connecting rod 5 which is obliquely arranged in the front-back direction is hinged and installed on the side plate part 1 through a hinge shaft I51, and the hinge shaft I51 is positioned at the back upper part of the U-shaped groove structure of the front lock hook structure 2;
the mechanical locking assembly comprises a locking hook 6 and a locking spring 7; the locking hook 6 which swings up and down is arranged behind the U-shaped groove structure of the front lock hook structure 2, the hook body of the locking hook 6 is hinged and installed on the side plate part 1 through a hinge shaft II 61, the hinge shaft II 61 is positioned below a hinge shaft I51, the front part of the locking hook 6 is a U-shaped hook structure which is arranged corresponding to the U-shaped groove structure of the front lock hook structure 2 and is provided with a downward opening, the hook size of the U-shaped hook structure is matched with the outer diameter size of a front mounting pin shaft of a working machine tool, the locking hook 6 can swing up and down along the hinge center of the hinge shaft II 61, when the locking hook 6 is turned downwards along the axis of the hinge shaft II 61, an accommodating space of a front mounting pin shaft of the operation machine can be formed between the U-shaped hook structure of the locking hook 6 and the U-shaped groove structure of the front locking hook structure 2, and the rear end of the locking hook 6 is hinged with the bottom end of the swing connecting rod 5 through the hinge shaft III 62; locking spring 7 installs between curb plate portion 1 and locking hook 6, and during normal locking state, locking spring 7 makes the U type crotch structure of locking hook 6 be in all the time and press close to the U type groove structure of preceding latch hook structure 2 and with the U type groove structure of preceding latch hook structure 2 between form the block state of operation machines front erection pin axle accommodation space.
The top end of the normally closed excavator quick-change connector can be used by being installed on a tipping bucket hydraulic cylinder and a bucket rod of an excavator through a tipping bucket hydraulic cylinder installation through hole and a bucket rod installation through hole, as shown in figure 3, when a working machine is installed, the locking hydraulic cylinder 4 is controlled to retract, the rear end of the locking hydraulic cylinder 4 firstly pulls the rear locking hook structure 3 to swing clockwise and open forwards in the retraction process of the locking hydraulic cylinder 4, after the rear locking hook structure 3 contacts a limiting and stopping component 11, the locking hydraulic cylinder 4 continues to retract, then the front end of the locking hydraulic cylinder 4 pulls the swinging connecting rod 5 to enable the swinging connecting rod 5 to rotate clockwise around the axis of a hinged shaft I51, the swinging connecting rod 5 drives the locking hook 6 to overcome the elasticity of the locking spring 7 through the hinged shaft III 62 in the swinging process and rotate clockwise along the hinged center of a hinged shaft II 61, and after the locking hydraulic cylinder 4 is completely retracted, the U-shaped hook structure of the, controlling a tipping bucket hydraulic cylinder and a bucket rod of the excavator to act, firstly controlling the normally closed excavator quick-change connector to translate forwards to enable the U-shaped groove structure of the front lock hook structure 2 to be clamped into a front mounting pin shaft of the operation machine, and then controlling the normally closed excavator quick-change connector to turn backwards clockwise along the axis of the front mounting pin shaft of the operation machine to enable a U-shaped hook opening of the rear lock hook structure 3 to be over against a rear mounting pin shaft of the operation machine, so that the butt joint of the operation machine is completed; and then controlling the locking hydraulic cylinder 4 to extend, as shown in fig. 4, the front end of the locking hydraulic cylinder 4 pushes the swing connecting rod 5 to enable the swing connecting rod 5 to rotate anticlockwise around the axis of the hinge shaft I51, meanwhile, under the action of the reset elastic force of the locking spring 7, the locking hook 6 rotates anticlockwise along the hinge center of the hinge shaft II 61 to enable the U-shaped hook structure of the locking hook 6 to be clamped on the front mounting pin shaft of the working machine tool, in the process that the locking hydraulic cylinder 4 continues to extend, the rear end of the locking hydraulic cylinder 4 pushes the rear locking hook structure 3 to swing anticlockwise and backwards, the U-shaped hook opening of the rear locking hook structure 3 is hooked on the rear mounting pin shaft of the working machine tool, and locking of the working machine tool is completed after the. In the locking state, even if the locking hydraulic cylinder 4 is leaked and fails, the U-shaped hook structure of the locking hook 6 can be always clamped on the front mounting pin shaft of the operation machine, so that the operation machine is prevented from falling off.
In order to reduce the opening and closing control of the locking hook 6 in a narrow installation space, as a further improvement scheme of the invention, when a clamping state of an accommodating space of a front installation pin shaft of a working machine tool is formed between a U-shaped hook structure of the locking hook 6 and a U-shaped groove structure of the front locking hook structure 2, as shown in fig. 4, a hinge center of a hinge shaft I51 is positioned above a hinge center of a hinge shaft II 61, a hinge center of a hinge shaft III 62 is positioned behind and below the hinge center of the hinge shaft I51, and a hinge center of a hinge shaft III 62 is positioned behind and above the hinge center of the hinge shaft II 61, and in order to meet the swing opening and closing requirements of the locking hook 6 and avoid movement interference, a long round through hole capable of allowing the hinge shaft III 62 to slide up and down is arranged at a hinge position of a rear end hinge shaft III 62 of the locking hook. By the arrangement, smaller installation space and more compact structure can be realized.
In a normal locking state, in order to realize that the locking spring 7 has a locking pretightening force acting on the locking hook 6, namely, the locking spring 7 is always in a reset elastic force which is applied to the locking hook 6 and enables the locking hook 6 to be in a clamping state with a U-shaped groove structure of the front locking hook structure 2 to form a containing space of a front mounting pin shaft of a working machine tool, so as to further prevent the unhooking phenomenon, as a further improvement scheme of the invention, a locking hook locking positioning plate 12 fixedly arranged on the side plate part 1 is arranged below the U-shaped groove structure of the front locking hook structure 2, and the locking pretightening force of the locking spring 7 acting on the locking hook 6 can force the U-shaped hook structure of the locking hook 6 to abut against the locking hook locking positioning plate 12.
The locking spring 7 can be a pressure spring structure or a tension spring structure or a torsion spring structure, and the torsion spring structure is more convenient to install and does not need to be additionally provided with an installation space, so that the locking spring 7 is of a torsion spring structure as a preferred scheme of the invention, the locking spring 7 of the torsion spring structure is sleeved on the hinge shaft II 61, one twisting foot end of the locking spring 7 abuts against the side plate part 1, and the other twisting foot abuts against the locking hook 6. In the case where the locking hook locking positioning plate 12 is provided, one of the leg ends of the locking spring 7 may be brought into abutment against the side plate portion 1 by abutting against the locking hook locking positioning plate 12.
As the locking hydraulic cylinder 4 is a suspended installation mode with two hinged ends, in order to realize the stable installation of the locking hydraulic cylinder 4 and increase the transmission stability of the swing connecting rod 5, as shown in fig. 1 and 2, the swing connecting rod 5 is arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder 4, hinged shafts i 51 of the two swing connecting rods 5 are respectively hinged on the lateral plate parts 1 arranged in bilateral symmetry, the top ends of the two swing connecting rods 5 are hinged with the front end of the locking hydraulic cylinder 4 through the same locking hydraulic cylinder installation shaft, and the two swing connecting rods 5 and the locking hydraulic cylinder installation shaft jointly form a gantry structure.
In order to achieve better effect of locking the locking hooks 6 on the front mounting pin shaft of the working machine, as shown in fig. 1 and fig. 2, as a further improvement scheme of the present invention, the locking hooks 6 are arranged in two left-right symmetry relative to the locking hydraulic cylinder 4, the two locking hooks 6 are fixedly connected by a connecting beam to form a locking frame structure, hinge shafts ii 61 of the two locking hooks 6 are respectively hinged to the side plate portions 1 arranged in left-right symmetry, and rear ends of the two locking hooks 6 are respectively hinged to the bottom ends of the two swing connecting rods 5 of the gantry structure by hinge shafts iii 62.
Claims (8)
1. A normally closed quick-change connector for an excavator comprises side plate parts (1) which are arranged in a bilateral symmetry mode and a locking control part arranged between the two side plate parts (1); it is characterized in that the preparation method is characterized in that,
the side plate parts (1) are fixedly connected through a connecting plate to form a frame structure, and tipping bucket hydraulic cylinder mounting through holes matched with mounting pin shafts of tipping bucket hydraulic cylinders and bucket rod mounting through holes matched with mounting pin shafts of bucket rods of the excavator are arranged at intervals in the front-back direction on the upper parts of the side plate parts (1); a front lock hook structure (2) is arranged at the front lower part of the side plate part (1), the front lock hook structure (2) is a U-shaped groove structure with an opening facing the right front, the U-shaped groove structure penetrates through the side plate part along the left and right directions, and the width dimension of the U-shaped groove structure is in clearance fit with the outer diameter dimension of a front mounting pin shaft of an operating machine; the rear part of the side plate part (1) is provided with a rear lock hook structure (3), the rear lock hook structure (3) is a hook body structure with a U-shaped hook opening facing backwards, the top of the rear lock hook structure (3) is hinged to the side plate part (1), a limiting and stopping component (11) capable of limiting the backward swinging angle of the rear lock hook structure (3) is fixedly arranged on the side plate part (1) corresponding to the rear lock hook structure (3), and the width dimension of the U-shaped hook opening of the rear lock hook structure (3) is in clearance fit with the outer diameter dimension of a rear mounting pin shaft of an operating machine;
the locking control part comprises a locking hydraulic cylinder (4), a swinging connecting rod (5) and a mechanical locking assembly;
the rear end of a locking hydraulic cylinder (4) which is arranged in a telescopic mode in the front-back direction is hinged with a hook body of the rear locking hook structure (3), and the front end of the locking hydraulic cylinder (4) is hinged with the top end of the swinging connecting rod (5);
a rod body of a swinging connecting rod (5) which is obliquely arranged in the front-back direction is hinged and installed on the side plate part (1) through a hinge shaft I (51), and the hinge shaft I (51) is positioned at the rear upper part of the U-shaped groove structure of the front lock hook structure (2);
the mechanical locking assembly comprises a locking hook (6) and a locking spring (7); the locking hook (6) which swings up and down is arranged behind a U-shaped groove structure of the front locking hook structure (2), a hook body of the locking hook (6) is hinged and installed on the side plate part (1) through a hinge shaft II (61), the hinge shaft II (61) is located below a hinge shaft I (51), the front part of the locking hook (6) is provided with a U-shaped hook structure which is arranged corresponding to the U-shaped groove structure of the front locking hook structure (2) and is provided with a downward opening, the size of a hook of the U-shaped hook structure is matched with the size of the outer diameter of a mounting pin shaft in front of a working machine, and the rear end of the locking hook (6) is hinged and installed with the bottom end of the swing connecting rod (5) through a hinge shaft III (62); the locking spring (7) is installed between the side plate part (1) and the locking hook (6), and in a normal locking state, the locking spring (7) enables the U-shaped hook structure of the locking hook (6) to be always in a clamping state close to the U-shaped groove structure of the front locking hook structure (2).
2. The quick-change connector for a normally closed excavator according to claim 1, wherein when the U-shaped hook structure of the locking hook (6) is in a fastened state close to the U-shaped groove structure of the front locking hook structure (2), the hinge center of the hinge shaft i (51) is located above the hinge center of the hinge shaft ii (61), the hinge center of the hinge shaft iii (62) is located behind and below the hinge center of the hinge shaft i (51), the hinge center of the hinge shaft iii (62) is located behind and above the hinge center of the hinge shaft ii (61), and the hinge position of the rear hinge shaft iii (62) of the locking hook (6) or the hinge position of the bottom hinge shaft iii (62) of the swing link (5) is provided with a long circular through hole capable of allowing the hinge shaft iii (62) to slide up and down.
3. The quick-change connector for the normally closed excavator according to claim 1 or 2, characterized in that a locking hook locking and positioning plate (12) fixedly arranged on the side plate part (1) is arranged below the U-shaped groove structure of the front locking hook structure (2), and the locking spring (7) enables the U-shaped hook structure of the locking hook (6) to abut against the locking hook locking and positioning plate (12).
4. The quick-change connector for the normally closed excavator according to claim 1 or 2, wherein the locking spring (7) is of a torsion spring structure, the locking spring (7) of the torsion spring structure is sleeved on the hinge shaft II (61), one torsion foot end of the locking spring (7) of the torsion spring structure abuts against the side plate part (1), and the other torsion foot abuts against the locking hook (6).
5. The quick-change connector for the normally closed excavator according to claim 4, characterized in that a locking hook locking and positioning plate (12) fixedly arranged on the side plate part (1) is arranged below the U-shaped groove structure of the front locking hook structure (2), and the locking spring (7) enables the U-shaped hook structure of the locking hook (6) to abut against the locking hook locking and positioning plate (12); one twisting foot end of a locking spring (7) with a torsion spring structure is propped against the locking hook locking positioning plate (12), and the other twisting foot is propped against the locking hook (6).
6. The quick-change connector for the normally closed excavator according to claim 1 or 2, wherein the swing connecting rod (5) is arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder (4), hinge shafts I (51) of the two swing connecting rods (5) are respectively and hingedly mounted on the side plate parts (1) arranged in bilateral symmetry, the top ends of the two swing connecting rods (5) are hingedly connected with the front end of the locking hydraulic cylinder (4) through the same locking hydraulic cylinder mounting shaft, and the two swing connecting rods (5) and the locking hydraulic cylinder mounting shaft jointly enclose a gantry structure.
7. The quick-change connector for the normally closed excavator according to claim 6, wherein the locking hooks (6) are arranged in two pieces in bilateral symmetry with respect to the locking hydraulic cylinder (4), the two locking hooks (6) are fixedly connected through a connecting beam to form a locking frame structure, the hinge shafts II (61) of the two locking hooks (6) are respectively and hingedly mounted on the side plate parts (1) arranged in bilateral symmetry, and the rear ends of the two locking hooks (6) are respectively and hingedly mounted with the bottom ends of the two swing connecting rods (5) of the gantry structure through hinge shafts III (62).
8. The quick-change connector for the normally closed excavator according to claim 1 or 2, wherein the locking hooks (6) are arranged in two pieces in bilateral symmetry relative to the locking hydraulic cylinder (4), the two locking hooks (6) are fixedly connected into a locking frame structure through a connecting beam, and the hinge shafts II (61) of the two locking hooks (6) are respectively and hingedly mounted on the side plate parts (1) in bilateral symmetry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011084509.0A CN112227439A (en) | 2020-10-12 | 2020-10-12 | Normally closed quick-change connector for excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011084509.0A CN112227439A (en) | 2020-10-12 | 2020-10-12 | Normally closed quick-change connector for excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112227439A true CN112227439A (en) | 2021-01-15 |
Family
ID=74112100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011084509.0A Pending CN112227439A (en) | 2020-10-12 | 2020-10-12 | Normally closed quick-change connector for excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112227439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113854094A (en) * | 2021-09-28 | 2021-12-31 | 徐工集团工程机械股份有限公司科技分公司 | Green transplanting machine |
| CN117988403A (en) * | 2024-04-03 | 2024-05-07 | 烟台江土机械设备有限公司 | Quick connector for excavator |
| CN117988403B (en) * | 2024-04-03 | 2024-05-31 | 烟台江土机械设备有限公司 | Quick connector for excavator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034948A (en) * | 2001-07-23 | 2003-02-07 | Hiroshi Kondo | Link rod equipped with quick coupler function |
| CN104389327A (en) * | 2014-11-18 | 2015-03-04 | 梅州鸿荣重工有限公司 | Double-safety quick automatic connector for excavator |
| CN213805532U (en) * | 2020-10-12 | 2021-07-27 | 徐州巴特工程机械股份有限公司 | Normally closed quick-change connector for excavator |
-
2020
- 2020-10-12 CN CN202011084509.0A patent/CN112227439A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003034948A (en) * | 2001-07-23 | 2003-02-07 | Hiroshi Kondo | Link rod equipped with quick coupler function |
| CN104389327A (en) * | 2014-11-18 | 2015-03-04 | 梅州鸿荣重工有限公司 | Double-safety quick automatic connector for excavator |
| CN213805532U (en) * | 2020-10-12 | 2021-07-27 | 徐州巴特工程机械股份有限公司 | Normally closed quick-change connector for excavator |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113854094A (en) * | 2021-09-28 | 2021-12-31 | 徐工集团工程机械股份有限公司科技分公司 | Green transplanting machine |
| CN117988403A (en) * | 2024-04-03 | 2024-05-07 | 烟台江土机械设备有限公司 | Quick connector for excavator |
| CN117988403B (en) * | 2024-04-03 | 2024-05-31 | 烟台江土机械设备有限公司 | Quick connector for excavator |
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