CN111485589A - Quick-change connecting structure and excavator - Google Patents
Quick-change connecting structure and excavator Download PDFInfo
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- CN111485589A CN111485589A CN202010466494.8A CN202010466494A CN111485589A CN 111485589 A CN111485589 A CN 111485589A CN 202010466494 A CN202010466494 A CN 202010466494A CN 111485589 A CN111485589 A CN 111485589A
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- 230000000903 blocking effect Effects 0.000 claims abstract description 37
- 230000008878 coupling Effects 0.000 claims description 7
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 238000011900 installation process Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 230000013011 mating Effects 0.000 description 5
- 101001010782 Drosophila melanogaster Fez family zinc finger protein erm Proteins 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E02F3/3609—Devices to connect tools to arms, booms or the like of the quick acting type, e.g. controlled from the operator seat
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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
- E02F3/96—Dredgers; Soil-shifting machines mechanically-driven with arrangements for alternate or simultaneous use of different digging elements
- E02F3/963—Arrangements on backhoes for alternate use of different tools
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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)
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Abstract
The embodiment of the invention provides a quick-change connecting structure and an excavator, and relates to the field of excavators. The problem that the existing excavator is not convenient enough to replace and install the workpiece is solved. The connecting device comprises a connecting frame and a blocking piece; the connecting frame is used for being fixedly connected with the machine arm; the connecting frame is provided with a connecting part and a connecting hole, and the connecting part is used for clamping the first pin shaft together with the blocking part; the connecting holes are used for being connected and fixed together through a second pin shaft. The excavator comprises a quick-change connecting structure. The connecting frame is fixed on the machine arm, the connecting frame is generally not required to be disassembled from and replaced from the machine arm in the follow-up process, when a workpiece is replaced, the workpiece can be disassembled from the connecting frame easily only by disassembling the blocking piece and the connecting frame and then drawing out the second pin shaft; when a workpiece is installed, the blocking piece is connected with the connecting frame, the first pin shaft is clamped together, then the second pin shaft is fixed, the workpiece can be installed, the replacement and installation process does not need to be matched by multiple people, and the workpiece can be easily installed only by an excavator manipulator and an assistant.
Description
Technical Field
The invention relates to the field of excavators, in particular to a quick-change connecting structure and an excavator.
Background
When the excavator is used, working parts at the front end of the excavator often need to be replaced due to different working conditions, for example, when the excavator is used for excavating soft soil, loading and unloading bulk coal and other working conditions, the requirement on the excavating force of the bucket is not high, the requirement on the bucket capacity is high, and the bucket with larger bucket capacity needs to be replaced at the moment so as to improve the excavating, loading and unloading efficiency; when the working conditions such as rocks and the like are hard, the mining bucket with small bucket capacity and high wear resistance needs to be replaced; under some working conditions, the bucket can be replaced by a breaking hammer for breaking; the bucket itself also needs to be replaced with a new bucket after a period of use due to wear and the like.
But the existing excavator has the problem that the workpiece is not convenient to install and replace, and the time and the labor are wasted.
Disclosure of Invention
The object of the present invention includes, for example, providing a quick-change coupling structure that can improve the problem of the existing excavator that it is not easy enough to replace and install the work piece.
The invention also aims to provide the excavator, which can solve the problem that the existing excavator is not convenient enough to replace and install the workpiece.
Embodiments of the invention may be implemented as follows:
the embodiment of the invention provides a quick-change connecting structure, which is used for connecting a machine arm and a workpiece of an excavator, wherein the workpiece is provided with a first ear sleeve and a second ear sleeve, the first ear sleeve is used for installing a first pin shaft, the second ear sleeve is used for installing a second pin shaft, and the quick-change connecting structure comprises:
a connecting frame and a blocking piece;
the connecting frame is used for being fixedly connected with the machine arm;
the connecting frame is provided with a connecting part and a connecting hole, and the connecting part is detachably connected with the blocking part so as to clamp a first pin shaft arranged on the first earmuff together; the connecting hole is used for corresponding to the second ear cap and is connected and fixed together through a second pin shaft.
In addition, the quick-change connection structure provided by the embodiment of the invention may also have the following additional technical features:
optionally: the connecting frame comprises an upper half frame and a lower half frame which are fixedly connected in sequence, and the upper half frame is close to the machine arm relative to the lower half frame;
the upper half frame is used for being fixedly connected with the machine arm, and the lower half frame is provided with a connecting part and a connecting hole.
Optionally: connecting portion set up the draw-in groove, and the draw-in groove is used for the card in the periphery of first round pin axle, and it is connected with connecting portion to block to be connected first round pin axle is spacing in the draw-in groove.
Optionally: the blocking piece is in a strip shape; both ends of the blocking piece are detachably connected with the connecting portion to seal the opening of the clamping groove.
Optionally: the quick-change connecting structure also comprises a fastener; the connecting part and the blocking part are detachably connected through a fastener.
Optionally: the lower half frame is provided with a matching surface which is used for matching with the outer side wall of the workpiece, so that the connecting hole corresponds to the second ear cap after the clamping groove and the first pin shaft are clamped in place.
Optionally: the lower half frame comprises a first lower connecting plate and a second lower connecting plate; the first lower connecting plate and the second lower connecting plate are arranged at intervals and are correspondingly provided with connecting holes, clamping grooves and matching surfaces; the number of the blocking parts is two, and the two blocking parts correspond to the two clamping grooves one to one.
Optionally: the quick-change connecting structure also comprises a third pin shaft and a fourth pin shaft;
the upper half frame comprises a first upper connecting plate and a second upper connecting plate, the first upper connecting plate and the second upper connecting plate are arranged at intervals and are provided with a first fixing hole and a second fixing hole;
the first fixing hole is used for corresponding to a first mounting hole formed in the machine arm and is fixedly connected with the machine arm through a third pin shaft, and the second fixing hole is used for corresponding to a second mounting hole formed in the machine arm and is fixedly connected with the machine arm through a fourth pin shaft.
Optionally: the connecting frame also comprises a connecting plate;
the first lower connecting plate and the second lower connecting plate are fixed on two opposite sides of the connecting plate, and the distance between the first lower connecting plate and the second lower connecting plate is smaller than the distance between the first upper connecting plate and the second upper connecting plate.
The embodiment of the invention also provides the excavator which comprises a quick-change connecting structure.
The quick-change connecting structure and the excavator provided by the embodiment of the invention have the beneficial effects that:
the quick-change connecting structure, the workpiece can be a bucket, a breaking hammer or other front working parts. The connecting frame is fixed on the machine arm, the connecting frame is generally not required to be disassembled from and replaced from the machine arm in the follow-up process, when a workpiece is replaced, the workpiece can be disassembled from the connecting frame easily only by disassembling the blocking piece and the connecting frame and then drawing out the second pin shaft; when installing new work piece, earlier block piece and link and connect, clip first round pin axle jointly, then with second round pin axle fixation, can accomplish the installation of work piece, change and installation process need not many people's cooperation, only need excavator operative employee and an auxiliary personnel can easily accomplish.
The excavator comprises the quick-change connecting structure, and the problem that the existing excavator is not convenient enough to replace and install workpieces can be solved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a partial structural schematic diagram of a first view angle of an excavator according to an embodiment of the present invention;
fig. 2 is a partial structural schematic diagram of a second view angle of the excavator according to the embodiment of the present invention;
fig. 3 is a partial structural schematic diagram of a third view angle of the excavator according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a quick-change connection structure provided in an embodiment of the present invention.
Icon: 10-an excavator; 11-a horn; 12-a bucket; 121-a first ear muff; 122-a second ear muff; 13-quick-change connection structure; 200-a connecting frame; 210-a connecting plate; 220-upper half frame; 221-a first upper connecting plate; 222-a second upper connecting plate; 230-lower half frame; 231-a first lower connecting plate; 232-a second lower connecting plate; 233-a connecting part; 234-card slot; 235-connection holes; 236-a mating face; 240-a barrier; 250-a fastener; 260-a first pin; 261-a second pin; 262-a third pin; 263-fourth pin.
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 of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. indicate an orientation or a positional relationship based on that shown in the drawings or that the product of the present invention is used as it is, this is only for convenience of description and simplification of the description, and it does not indicate or imply that the device or the element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
The quick-change coupling structure provided in this embodiment is described in detail below with reference to fig. 1 to 4.
Referring to fig. 1, an embodiment of the present invention provides a quick-change connecting structure 13, configured to connect a boom 11 and a working element of an excavator 10, where the working element is provided with a first ear loop 121 and a second ear loop 122, the first ear loop 121 is used to mount a first pin 260, and the second ear loop 122 is used to mount a second pin 261, and the quick-change connecting structure 13 includes: the coupling frame 200 and the blocking member 240; the connecting frame 200 is used for being fixedly connected with the machine arm 11; the connecting frame 200 is provided with a connecting part 233 and a connecting hole 235, wherein the connecting part 233 is used for being detachably connected with the blocking part 240 so as to jointly clamp and fix the first pin 260 on the first ear cap 121; the connecting hole 235 is used for corresponding to the second ear cap 122 and is connected and fixed together by a second pin 261.
It should be noted that: the term "working member" as used herein refers to a working element located at the front end of the excavator 10, and may specifically be a bucket 12, a demolition hammer, or other working element. The "arm 11" is a structure in which the front end of the excavator 10 is formed by connecting a link and an arm, and a work is mounted thereon. The "first ear 121 and the second ear 122" may be provided on the bucket 12, the breaking hammer, or another working member. So long as it is mounted on the workpiece, for effecting connection of the workpiece to the connecting bracket 200.
Specifically, referring to fig. 1, in the present embodiment, the working member is a bucket 12, the first ear loop 121 and the second ear loop 122 are disposed on the ear plate of the bucket 12 at intervals, and are described in relative positions in fig. 1, and the first ear loop 121 and the second ear loop 122 are disposed in sequence from right to left.
Referring to fig. 2, the first pin 260 passes through the first ear 121 and is fixed, the connecting frame 200 is connected with the blocking member 240 to clamp the first pin 260 together, and then the second pin 261 passes through the corresponding connecting hole 235 and the second ear 122 and is fixed, thereby completing the connection between the connecting frame 200 and the bucket 12.
In the installation, press from both sides tight first round pin axle 260 through the connection of link 200 and piece 240 jointly earlier, rethread second round pin axle 261 passes connecting hole 235 and second earmuff 122, compare first round pin axle 260 and second round pin axle 261 all need pass the hole among the prior art, the hole corresponds more difficult problem, in this embodiment, only second round pin axle 261 need pass connecting hole 235, first round pin axle 260 then relies on link 200 and the connection realization of piece 240 to press from both sides tight fixedly, therefore, can reduce the difficult and easy degree of change and installation, thereby improve the efficiency that the work piece was changed and was installed.
With continued reference to fig. 2 and 3, in the present embodiment, the connecting frame 200 includes an upper half frame 220 and a lower half frame 230 fixedly connected in sequence, and the upper half frame 220 is close to the horn 11 relative to the lower half frame 230; the upper half frame 220 is used for fixedly connecting with the horn 11, and the lower half frame 230 is provided with a connecting portion 233 and a connecting hole 235.
With the relative positions in fig. 2, the upper half frame 220 and the lower half frame 230 are arranged in order from top to bottom, and with this structure, a reasonable layout of the structure and the function can be achieved.
Referring to fig. 4 and fig. 2, in the present embodiment, the connecting portion 233 is provided with a locking groove 234, the locking groove 234 is used for being locked at the periphery of the first pin 260, and the blocking member 240 is connected to the connecting portion 233 to limit the first pin 260 in the locking groove 234.
Specifically, the slot 234 is U-shaped. Referring to the relative position shown in fig. 4, the opening of the slot 234 faces to the right, and the blocking member 240 is connected to the connecting portion 233 to seal the opening of the slot 234, so as to retain the first pin 260 in the slot 234.
Specifically, the blocking member 240 has a strip shape; both ends of the blocking member 240 are detachably connected to the connection portions 233 to close the opening of the card slot 234. For easy removal and installation.
With continued reference to fig. 4, in this embodiment, the quick-change coupling 13 further includes a fastener 250; the connecting portion 233 and the blocking member 240 are detachably connected by a fastener 250.
Specifically, the fastening member 250 is a bolt, which is introduced in the relative position in fig. 4, the top end of the blocking member 240 is connected to the connecting portion 233 through a first bolt, the bottom end of the blocking member 240 is connected to the connecting portion 233 through a second bolt, when the blocking member 240 needs to be detached, the second bolt can be detached only, the first bolt is screwed out, and then the blocking member 240 is rotated around the first bolt, so that the opening of the slot 234 is exposed, the first pin shaft 260 can be withdrawn from the slot 234, the detaching step is further simplified, and the convenience of detaching and replacing is improved.
With continued reference to fig. 4 and with reference to fig. 3, in the present embodiment, the lower frame half 230 is provided with a mating surface 236, and the mating surface 236 is used for mating with the outer sidewall of the workpiece, so that the connecting hole 235 corresponds to the second ear loop 122 after the locking groove 234 and the first pin 260 are locked in place.
The shape and size of the fitting surface 236 and the locking groove 234 can realize the correspondence between the connecting hole 235 and the second ear cap 122 when the connecting portion 233 and the blocking member 240 clamp the first pin 260 together (or after the locking groove 234 and the first pin 260 are locked in place), thereby playing a role in positioning and further improving the installation efficiency.
Referring to fig. 3, the mating surface 236 is adapted to mate with an outer sidewall of the back plate of the bucket 12, such that the connecting hole 235 corresponds to the second ear 122 after the engaging slot 234 is engaged with the first pin 260.
With continued reference to fig. 4, in the present embodiment, the lower half 230 includes a first lower connecting plate 231 and a second lower connecting plate 232; the first lower connecting plate 231 and the second lower connecting plate 232 are arranged at intervals and are correspondingly provided with a connecting hole 235, a clamping groove 234 and a matching surface 236; the number of the stoppers 240 is two, and two stoppers 240 correspond to two card slots 234 one to one.
It should be noted that: the connecting portion 233 is a portion of the lower frame half 230 where the card slot 234 is disposed, and the portions of the first lower connecting plate 231 and the second lower connecting plate 232 where the card slot 234 is disposed are both regarded as the connecting portion 233.
Specifically, the connecting hole 235 provided on the first lower connecting plate 231 corresponds to the connecting hole 235 provided on the second lower connecting plate 232, the engaging groove 234 provided on the first lower connecting plate 231 corresponds to the engaging groove 234 provided on the second lower connecting plate 232, and the engaging surface 236 provided on the first lower connecting plate 231 corresponds to the engaging surface 236 provided on the second lower connecting plate 232.
With the structure of the first lower link plate 231 and the second lower link plate 232, the overall weight of the link frame 200 can be reduced.
With continued reference to fig. 4 and with reference to fig. 3, in the present embodiment, the quick-change coupling structure 13 further includes a third pin 262 and a fourth pin 263; the upper half frame 220 comprises a first upper connecting plate 221 and a second upper connecting plate 222, wherein the first upper connecting plate 221 and the second upper connecting plate 222 are arranged at intervals and are provided with a first fixing hole and a second fixing hole; the first fixing hole is used for corresponding to a first mounting hole formed in the horn 11 and is fixedly connected through a third pin 262, and the second fixing hole is used for corresponding to a second mounting hole formed in the horn 11 and is fixedly connected through a fourth pin 263.
Referring to fig. 3, the boom 11 includes a bucket rod and a connecting rod, the bucket rod is provided with a first mounting hole, the connecting rod is provided with a second mounting hole, a first fixing hole provided on the first upper connecting plate 221 and a first fixing hole provided on the second upper connecting plate 222 correspond to each other and correspond to the first mounting hole, a third pin 262 passes through the first mounting hole and the first fixing hole, and both ends of the third pin are fixed on the first upper connecting plate 221 and the second upper connecting plate 222 through bolts, respectively; the second fixing hole provided on the first upper connecting plate 221 and the second fixing hole provided on the second upper connecting plate 222 correspond to each other and commonly correspond to the second mounting hole, the fourth pin 263 passes through the second mounting hole and the second fixing hole, and both ends are fixed on the first upper connecting plate 221 and the second upper connecting plate 222 through bolts, respectively.
The detachable connection of the connecting frame 200 and the horn 11 is realized through the mode, the connecting frame 200 does not need to be taken down in the replacement and installation process of a workpiece, and the connecting frame 200 can be taken down from the horn 11 if maintenance is needed.
With continued reference to fig. 4, in conjunction with fig. 3, the connecting frame 200 further includes a connecting plate 210; the upper half frame 220 and the lower half frame 230 are fixed to opposite sides of the connecting plate 210, and the interval between the first lower connecting plate 231 and the second lower connecting plate 232 is smaller than the interval between the first upper connecting plate 221 and the second upper connecting plate 222. The connection and fixation of the first lower connecting plate 231 and the second lower connecting plate 232 and the connection and fixation of the first upper connecting plate 221 and the second upper connecting plate 222 are realized through the connecting plate 210, and the connecting frame 200 has a simple structure.
The "distance between the first lower link plate 231 and the second lower link plate 232" refers to a vertical distance between the first lower link plate 231 and the second lower link plate 232 along the extending direction of the plane of the connecting plate 210, and similarly, the "distance between the first upper link plate 221 and the second upper link plate 222" refers to a vertical distance between the first upper link plate 221 and the second upper link plate 222 along the extending direction of the plane of the connecting plate 210, and the connecting plate 210 is horizontally arranged as described with reference to the relative position in fig. 4.
Referring to fig. 3 again, the number of the ear plates on the bucket 12 is two, the first ear plate and the second ear plate are respectively a first ear plate and a second ear plate, the first ear plate and the second ear plate are sequentially arranged at intervals from left to right, the connecting rod and the bucket rod are arranged between the first upper connecting plate 221 and the second upper connecting plate 222, the first lower connecting plate 231 and the second lower connecting plate 232 are arranged between the first ear plate and the second ear plate, and the distance between the first lower connecting plate 231 and the second lower connecting plate 232 is smaller than the distance between the first upper connecting plate 221 and the second upper connecting plate 222, so that the first lower connecting plate 231 and the second lower connecting plate 232 are matched with the ear plates of the workpiece, and the workpiece is more stably mounted.
Referring again to fig. 2 and 3, the quick-change coupling structure 13 provided in the present embodiment is replaced and installed as follows:
the upper half frame 220 is fixedly connected with the bucket rod and the connecting rod, and is generally not required to be disassembled, assembled and replaced subsequently.
The lower half frame 230 of the quick-change connecting structure 13 is connected with the bucket 12 or the breaking hammer, when the bucket 12 and the bucket 12 or the bucket 12 and the breaking hammer are switched, the quick-change connecting structure does not need to be separated from the bucket rod, only the bolt at the U-shaped clamping groove 234 at the front end of the lower part needs to be loosened, the blocking piece 240 needs to be detached, the second pin shaft 261 at the rear end of the lower half frame 230 needs to be pulled out, and the detached bucket 12 can be easily detached. When the blocking members 240 are removed, the lower ends of the two blocking members 240 can be removed and rotated inwardly about the upper ends to clear the opening of the locking slot 234.
The process of installing new scraper bowl 12 or quartering hammer is simple as well, adjusts the angle of quick connect structure earlier and makes U type draw-in groove 234 block the first round pin axle 260 of front end of scraper bowl 12, and the installation stops piece 240 and bolt, penetrates second round pin axle 261 and the fixing bolt of quick change connection structure 13 rear end again, can accomplish the purpose of quick change scraper bowl 12, quartering hammer. The whole replacement process can be easily completed by only an operating hand of the excavator 10 and an assistant without cooperation of a plurality of persons.
The embodiment of the invention also provides the excavator 10, and the excavator 10 comprises a quick-change connecting structure 13. The excavator 10 further comprises a machine body, the arm 11 is arranged on the machine body, and the quick-change connecting structure 13 is connected with the workpiece and the arm 11. The problem that the existing excavator 10 is not convenient enough to replace and install the work piece can be solved.
The quick-change connecting structure 13 provided by this embodiment has at least the following advantages:
the front end of the arm of the excavator 10 is provided with a quick-change connecting structure 13 capable of quickly changing the bucket 12 and the breaking hammer, and the lower half frame 230 of the quick-change connecting structure 13 is connected with the bucket 12 or the breaking hammer, so that the bucket 12 or the breaking hammer can be quickly changed, and the working device of the excavator 10 can better adapt to complex working conditions. Specifically, the bucket 12 or the quartering hammer at the front end can be replaced quickly, the physical strength of personnel at the position of replacing the front end working device is reduced, and personnel involved in replacing the bucket 12 or the quartering hammer are reduced.
The lower half 230 of the quick-change connecting structure 13 is provided with the U-shaped clamping groove 234, and the first pin shaft 260 can be directly clamped by matching with the blocking piece 240, so that the trouble of drawing and penetrating the first pin shaft 260 when the bucket 12 is replaced every time is avoided, and the installation difficulty is reduced.
The quick-change connecting structure 13 is suitable for different excavator types 10 and different workpiece types, and can be designed according to the types and sizes of the workpieces.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The utility model provides a quick-change connection structure for connect horn (11) and the work piece of excavator (10), the work piece sets up first earmuff (121) and second earmuff (122), first earmuff (121) are used for installing first round pin axle (260), second earmuff (122) are used for installing second round pin axle (261), its characterized in that, quick-change connection structure includes:
a connecting frame (200) and a blocking member (240);
the connecting frame (200) is used for being fixedly connected with the machine arm (11);
the connecting frame (200) is provided with a connecting part (233) and a connecting hole (235), wherein the connecting part (233) is detachably connected with the blocking part (240) to jointly clamp the first pin shaft (260) mounted on the first earcap (121); the connecting hole (235) is used for corresponding to the second ear cap (122) and is connected and fixed together through the second pin shaft (261).
2. The quick-change connection according to claim 1, characterized in that:
the connecting frame (200) comprises an upper half frame (220) and a lower half frame (230) which are fixedly connected in sequence, and the upper half frame (220) is close to the machine arm (11) relative to the lower half frame (230);
the upper half frame (220) is used for being fixedly connected with the machine arm (11), and the lower half frame (230) is provided with the connecting part (233) and the connecting hole (235).
3. The quick-change connection according to claim 2, characterized in that:
the connecting portion (233) is provided with a clamping groove (234), the clamping groove (234) is used for being clamped on the periphery of the first pin shaft (260), and the blocking piece (240) is connected with the connecting portion (233) so that the first pin shaft (260) is limited in the clamping groove (234).
4. The quick-change connection according to claim 3, wherein:
the blocking piece (240) is in a strip shape; both ends of the blocking member (240) are detachably connected with the connecting portion (233) to close the opening of the card slot (234).
5. The quick-change connection according to claim 4, wherein:
the quick-change connecting structure also comprises a fastener (250);
the connecting part (233) and the blocking part (240) are detachably connected through the fastener (250).
6. The quick-change connection according to claim 3, wherein:
the lower half frame (230) is provided with a matching surface (236), the matching surface (236) is used for matching with the outer side wall of the workpiece, so that the connecting hole (235) corresponds to the second ear sleeve (122) after the clamping groove (234) and the first pin shaft (260) are clamped in place.
7. The quick-change connection according to claim 6, wherein:
the lower half frame (230) comprises a first lower connecting plate (231) and a second lower connecting plate (232); the first lower connecting plate (231) and the second lower connecting plate (232) are arranged at intervals and are correspondingly provided with the connecting hole (235), the clamping groove (234) and the matching surface (236);
the number of the blocking parts (240) is two, and the two blocking parts (240) correspond to the two clamping grooves (234) one by one.
8. The quick-change connection according to claim 7, wherein:
the quick-change connecting structure also comprises a third pin shaft (262) and a fourth pin shaft (263);
the upper half frame (220) comprises a first upper connecting plate (221) and a second upper connecting plate (222), wherein the first upper connecting plate (221) and the second upper connecting plate (222) are arranged at intervals and are provided with a first fixing hole and a second fixing hole;
the first fixing hole is used for corresponding to a first mounting hole formed in the machine arm (11) and is fixedly connected through the third pin shaft (262), and the second fixing hole is used for corresponding to a second mounting hole formed in the machine arm (11) and is fixedly connected through the fourth pin shaft (263).
9. The quick-change connection according to claim 8, wherein:
the connecting frame (200) further comprises a connecting plate (210);
the upper half frame (220) and the lower half frame (230) are fixed on two opposite sides of the connecting plate (210), and the distance between the first lower connecting plate (231) and the second lower connecting plate (232) is smaller than that between the first upper connecting plate (221) and the second upper connecting plate (222).
10. An excavator (10) characterized by:
the excavator (10) comprising a quick-change coupling according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010466494.8A CN111485589A (en) | 2020-05-28 | 2020-05-28 | Quick-change connecting structure and excavator |
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| CN202010466494.8A CN111485589A (en) | 2020-05-28 | 2020-05-28 | Quick-change connecting structure and excavator |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19717897A1 (en) * | 1997-04-28 | 1998-10-29 | Alfons Stock | Quick-change mechanism for working implements |
| US6431785B1 (en) * | 2000-06-05 | 2002-08-13 | Wec Co. | Direct pin quick coupler |
| DE10200836A1 (en) * | 2002-01-08 | 2003-07-24 | Thomas Sauer | Rapid tool changing mechanism for excavator, bulldozer or mechanical loader includes quick release couplings for hydraulic lines at sides of mounting frame |
| DE202015000293U1 (en) * | 2015-01-14 | 2015-04-07 | Günter Schmihing Gmbh | Adapter for quick-change frames on working machines |
| CN109235518A (en) * | 2018-09-25 | 2019-01-18 | 中铁工程机械研究设计院有限公司 | Engineering machinery tool heads quick change construction and horn |
| CN212248422U (en) * | 2020-05-28 | 2020-12-29 | 三一重机有限公司 | Quick-change connecting structure and excavator |
-
2020
- 2020-05-28 CN CN202010466494.8A patent/CN111485589A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19717897A1 (en) * | 1997-04-28 | 1998-10-29 | Alfons Stock | Quick-change mechanism for working implements |
| US6431785B1 (en) * | 2000-06-05 | 2002-08-13 | Wec Co. | Direct pin quick coupler |
| DE10200836A1 (en) * | 2002-01-08 | 2003-07-24 | Thomas Sauer | Rapid tool changing mechanism for excavator, bulldozer or mechanical loader includes quick release couplings for hydraulic lines at sides of mounting frame |
| DE202015000293U1 (en) * | 2015-01-14 | 2015-04-07 | Günter Schmihing Gmbh | Adapter for quick-change frames on working machines |
| CN109235518A (en) * | 2018-09-25 | 2019-01-18 | 中铁工程机械研究设计院有限公司 | Engineering machinery tool heads quick change construction and horn |
| CN212248422U (en) * | 2020-05-28 | 2020-12-29 | 三一重机有限公司 | Quick-change connecting structure and excavator |
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