CN114197568B - Hydraulic drive automatic vibration controller - Google Patents
Hydraulic drive automatic vibration controller Download PDFInfo
- Publication number
- CN114197568B CN114197568B CN202111549902.7A CN202111549902A CN114197568B CN 114197568 B CN114197568 B CN 114197568B CN 202111549902 A CN202111549902 A CN 202111549902A CN 114197568 B CN114197568 B CN 114197568B
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- valve
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- 239000007788 liquid Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2029—Controlling the position of implements in function of its load, e.g. modifying the attitude of implements in accordance to vehicle speed
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/22—Hydraulic or pneumatic drives
- E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
- E02F9/2267—Valves or distributors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a hydraulic automatic vibration controller which is applied to bucket control of a scraper/loader and comprises a function switching valve, a reversing valve and a reversing piston, when the resistance in a material pile is large in work, under the condition that the bucket cannot be inserted into the material pile, oil is led to a pedal pilot oil port, so that the function switching valve is switched to a vibration mode, the oil inlet and outlet of an oil cylinder are controlled to exchange through the reversing valve, the speed of the oil cylinder in moving is controlled, and then the reversing piston is used for controlling the switching time of the reversing valve, so that the movement distance and frequency of the oil cylinder are controlled, the oil cylinder is enabled to quickly move and further control the bucket to quickly vibrate and move forwards, the bucket is enabled to be easily inserted into the material pile for shoveling, the whole process is one-key automatic vibration work, and an operator is not needed to control the advancing direction of the scraper/loader in a more concentrated manner, and the operation is convenient.
Description
Technical Field
The invention relates to the field of hydraulic control valves, in particular to a hydraulic drive automatic vibration controller.
Background
When mining ores or tunneling, the device is often applied to a scraper/loader, and the scraper/loader loads the mined stones, soil and the like on a feeding car, so that the device is a very convenient and efficient mechanical device, but when the existing scraper/loader works,
Firstly, when a large amount of stones are in a material pile, the resistance is high, the bucket of the scraper/loader is difficult to insert into the material pile, and even if the accelerator of the scraper/loader is stepped on to control the shovel car to move forwards, the scraper/loader can slip, so that the work is difficult to carry out, and the work efficiency is affected;
secondly, when a large amount of stones are in the material pile, an operator needs to control the steering wheel of the scraper/loader while manually controlling the bucket to move up and down to enter the material pile, and the operator can hardly control the accelerator by stepping on the foot to provide forward power.
Disclosure of Invention
In order to solve the problems, the invention provides a liquid drive automatic vibration controller for solving the problems.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides a liquid drives automatic vibration controller, includes valve body and hydro-cylinder, its characterized in that: the valve body is provided with a function switching valve, a reversing valve and a reversing piston; the function switching valve is used for controlling the switching of a normal mode and a vibration mode of the oil cylinder; the reversing valve is used for controlling the oil inlet and outlet interchange of the oil cylinder and the movement speed of the oil cylinder; the reversing piston is used for controlling the switching time of the reversing valve, so that the movement distance and frequency of the oil cylinder are controlled.
Further: the valve body is provided with a first cavity, the function switching valve is provided with a first valve core, the first valve core is arranged in the first cavity, and the first cavity is internally provided with a pedal pilot oil port, an oil inlet, an oil outlet, a rod cavity oil port, a rodless cavity oil port, a first oil groove and a second oil groove; in a normal mode, the pedal pilot oil port is closed, the first valve core is positioned at the left end of the first cavity, the oil inlet is communicated with the rod cavity oil port, and the oil outlet is communicated with the rodless cavity oil port; under the vibration mode, pedal guide hydraulic fluid port is opened, first case is located the right-hand member of first cavity, oil inlet and oil-out are closed, there is pole chamber hydraulic fluid port with first oil groove intercommunication, there is not pole chamber hydraulic fluid port with the second oil groove intercommunication.
Further: the valve body is provided with a second cavity, the reversing valve is provided with a second valve core, the second valve core is arranged in the second cavity, a left cavity, a right cavity, a third oil groove, a fourth oil groove, a vibration valve plate A opening and a vibration valve plate B opening are arranged in the second cavity, the third oil groove is communicated with the first oil groove, and the fourth oil groove is communicated with the second oil groove; when the second valve core is positioned at the left end of the second cavity, the third oil groove is communicated with the opening A of the vibration valve plate, and the fourth oil groove is communicated with the opening B of the vibration valve plate; when the second valve core is positioned at the right end of the second cavity, the fourth oil groove is communicated with the opening A of the vibration valve plate, and the third oil groove is communicated with the opening B of the vibration valve plate.
Further: the valve body is provided with a third cavity, the reversing piston is provided with a piston rod, the piston rod is arranged in the third cavity, the third cavity is internally provided with a left oil port, a right oil port, a fifth oil groove and a sixth oil groove, the left oil port is respectively communicated with the third oil groove and the vibration valve plate B port, the right oil port is communicated with the fourth oil groove, the fifth oil groove is communicated with the left cavity, and the sixth oil groove is communicated with the right cavity; when the piston rod is positioned at the left end of the third cavity, the right oil port is communicated with the sixth oil groove; when the piston rod is positioned at the right end of the third cavity, the left oil port is communicated with the fifth oil groove.
Further: the oil port of the rod cavity is in throttling arrangement when communicated with the first oil groove.
Further: and the left Lu Youkou and the right oil ports are respectively provided with a detachable throttling plug.
Further: the cross-sectional area of the left end of the piston rod is larger than the cross-sectional area of the right end of the piston rod.
The hydraulic automatic vibration controller has the beneficial effects that the hydraulic automatic vibration controller is applied to bucket control of a scraper/loader, when the resistance in a material pile is large in work, oil is introduced into a pedal pilot oil port under the condition that the bucket cannot be inserted into the material pile, so that a function switching valve is switched to a vibration mode, the oil inlet and outlet ports of an oil cylinder are controlled to exchange through the switching valve, the speed during movement is controlled through the switching piston, and then the switching time of the switching valve is controlled through the switching piston, so that the movement distance and frequency of the oil cylinder are controlled, the oil cylinder is quickly moved to further control the bucket to quickly vibrate and move forwards, the bucket is easily inserted into the soil pile to carry out shoveling, the whole process is one-key automatic vibration work, and the operation is facilitated by controlling the advancing direction of a bucket truck more specially.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the present invention;
FIG. 3 is a block diagram of the present invention in a normal mode;
fig. 4 is a schematic view of the structure in the vibration mode of the present invention.
In the figure, 1, a valve body, 2, an oil cylinder, 3, a first cavity, 4, a first valve core, 5, a pedal pilot oil port, 6, an oil inlet, 7, an oil outlet, 8, a rod cavity oil port, 9, a rodless cavity oil port, 10, a first oil groove, 11, a second oil groove, 12, a second cavity, 13, a second valve core, 14, a left cavity, 15, a right cavity, 16, a third oil groove, 17, a fourth oil groove, 18, a vibration valve plate A port, 19, a vibration valve plate B port, 20, a third cavity, 21, a piston rod, 22, a left Lu Youkou, 23, a right path oil port, 24, a fifth oil groove, 25, a sixth oil groove, 26 and a throttle plug.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention. On the contrary, the embodiments of the invention include all alternatives, modifications and equivalents as may be included within the spirit and scope of the appended claims.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art. Furthermore, in the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and further implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
As shown in fig. 1, the invention provides a liquid-driven automatic vibration controller, which comprises a valve body 1 and an oil cylinder 2, wherein a function switching valve, a reversing valve and a reversing piston are arranged on the valve body 1; the function switching valve is used for controlling the switching of the normal mode and the vibration mode of the oil cylinder 2; the reversing valve is used for controlling the exchange of oil inlet and oil outlet of the oil cylinder 2 and the movement speed of the oil cylinder 2; the reversing piston is used for controlling the switching time of the reversing valve, so that the movement distance and frequency of the oil cylinder 2 are controlled.
The device is applied to the oil cylinder 2 of the bucket, when the device works in a normal mode, the bucket moves forwards through the pushing of the normal movement of the oil cylinder 2, the bucket can be easily inserted into the pile to scoop materials under the working condition of small resistance in the pile, when the resistance in the pile is large, the bucket can not be inserted, the bucket can enter a vibration mode, and under the condition that the bucket cannot be inserted, the function switching valve, the reversing valve and the reversing piston are mutually matched, so that the oil cylinder 2 moves fast to control the bucket to vibrate fast and move forwards, and the bucket can be easily inserted into the pile to scoop materials.
As shown in fig. 2,3 and 4, a first cavity 3 is formed on the valve body 1, the function switching valve is provided with a first valve core 4, the first valve core 4 is arranged in the first cavity 3, and a pedal pilot oil port 5, an oil inlet 6, an oil outlet 7, a rod cavity oil port 8, a rodless cavity oil port 9, a first oil groove 10 and a second oil groove 11 are arranged in the first cavity 3; in a normal mode, the pedal pilot oil port 5 is closed, the first valve core 4 is positioned at the left end of the first cavity 3, the oil inlet 6 is communicated with the rod cavity oil port 8, and the oil outlet 7 is communicated with the rodless cavity oil port 9; under the vibration mode, pedal guide hydraulic fluid port 5 is opened, first case 4 is located the right-hand member of first cavity 3, oil inlet 6 and oil-out 7 are closed, there is pole chamber hydraulic fluid port 8 with first oil groove 10 intercommunication, there is no pole chamber hydraulic fluid port 9 with second oil groove 11 intercommunication.
The rod cavity oil port 8 is communicated with the rod cavity of the oil cylinder 2, the rod cavity oil port 9 is communicated with the rod cavity of the oil cylinder 2, and in a normal state, the oil inlet 6 supplies oil or discharges oil to the rod cavity of the oil cylinder 2 through the rod cavity oil port 8, the oil outlet 7 supplies oil or discharges oil to the rod cavity of the oil cylinder 2 through the rod cavity oil port 9, so that the loading and unloading actions of the bucket can be manually controlled, when the pedal pilot valve is opened, the oil inlet 6 and the oil outlet 7 are closed, and the manual control oil way is cut off to enter a vibration mode.
The valve body 1 is provided with a second cavity 12, the reversing valve is provided with a second valve core 13, the second valve core 13 is arranged in the second cavity 12, a left cavity 14, a right cavity 15, a third oil groove 16, a fourth oil groove 17, a vibration valve plate A port 18 and a vibration valve plate B port 19 are arranged in the second cavity 12, the third oil groove 16 is communicated with the first oil groove 10, and the fourth oil groove 17 is communicated with the second oil groove 11; when the second valve core 13 is located at the left end of the second cavity 12, the third oil groove 16 is communicated with the vibration valve plate a port 18, and the fourth oil groove 17 is communicated with the vibration valve plate B port 19; when the second valve core 13 is located at the right end of the second cavity 12, the fourth oil groove 17 is communicated with the vibration valve plate a port 18, the third oil groove 16 is communicated with the vibration valve plate B port 19, the vibration valve plate a port 18 is communicated with a high-pressure oil path, and the vibration valve plate B port 19 is communicated with a low-pressure oil path.
The valve body 1 is provided with a third cavity 20, the reversing piston is provided with a piston rod 21, the piston rod 21 is arranged in the third cavity 20, the third cavity 20 is provided with a left oil port 22, a right oil port 23, a fifth oil groove 24 and a sixth oil groove 25, the left oil port 22 is respectively communicated with the third oil groove 16 and the vibration valve plate B port 19, the right oil port 23 is communicated with the fourth oil groove 17, the fifth oil groove 24 is communicated with the left cavity 14, and the sixth oil groove 25 is communicated with the right cavity 15; when the piston rod 21 is positioned at the left end of the third cavity 20, the right oil port 23 is communicated with the sixth oil groove 25; when the piston rod 21 is located at the right end of the third chamber 20, the left oil port 22 communicates with the fifth oil groove 24.
In the vibration mode, high-pressure oil enters through a vibration valve plate A port 18 of the reversing valve, a stream of high-pressure oil enters a rod cavity of the oil cylinder 2 along a third oil groove 16, a first oil groove 10 and a rod cavity oil port 8, the oil cylinder 2 is pushed to move rightwards, and high-pressure oil without the rod cavity in the oil cylinder 2 flows out from the rod cavity oil port 8, a second oil groove 11 and a fourth oil groove 17 to a vibration valve plate B port 19; and when the piston rod 21 moves to the fifth oil groove 24, the high-pressure oil enters the left chamber 14 of the reversing valve through the fifth oil groove 24, and pushes the second valve core 13 to rapidly reverse.
When the second valve core 13 is positioned at the right end, the high-low pressure port of the oil cylinder 2 is switched, the vibration valve plate A port 18 is communicated with the fourth oil groove 17, high-pressure oil in the high-pressure oil way enters the rodless cavity of the oil cylinder 2 along the fourth oil groove 17, the second oil groove 11 and the rodless cavity oil port 9, the oil cylinder 2 returns, and the high-pressure oil in the rod cavity flows out from the rod cavity oil port 8, the first oil groove 10 and the third oil groove 16 to the vibration valve plate B port 19; meanwhile, one oil cavity of the reversing piston enters along the fourth oil groove 17 and the right oil port 23, the left cavity becomes a low-pressure cavity, the piston rod 21 decelerates, stops and pushes reversely to move, high-pressure oil in the left cavity of the reversing piston flows out from the left oil port 22 to the vibrating valve plate B port 19, and when the high-pressure oil moves to the sixth oil groove 25, the high-pressure oil enters the right cavity 15 of the reversing valve along the sixth oil groove 25, and the reversing valve is rapidly reversed, so that the up-and-down vibration of the oil cylinder 2 is realized.
The rod cavity oil port 8 is in throttling arrangement when communicated with the first oil groove 10, and the flow of high-pressure oil entering the oil cylinder 2 is controlled through the throttling arrangement so as to control the distance of the oil cylinder 2 for up-and-down vibration.
The left oil port 22 and the right oil port 23 are respectively provided with a detachable throttle plug 26, and the throttle plugs 26 are used for controlling the movement time of the high-pressure oil entering the reversing piston in the process or the return stroke, so as to control the up-and-down vibration distance of the oil cylinder 2.
The cross-sectional area of the left end of the piston rod 21 is larger than that of the right end of the piston rod 21, so that the space volume of the left cavity of the reversing piston is smaller than that of the right cavity, the space volume of the rod cavity of the corresponding oil cylinder 2 is smaller than that of the rod-free cavity, the movement frequency of the reversing piston is approximately synchronous with the movement frequency of the oil cylinder 2, and the stability of the vibration frequency of the bucket is ensured, so that an ideal movement effect is achieved.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (2)
1. The utility model provides a liquid drives automatic vibration controller, includes valve body (1) and hydro-cylinder (2), its characterized in that: the valve body (1) is provided with a function switching valve, a reversing valve and a reversing piston;
the function switching valve is used for controlling the switching of a normal mode and a vibration mode of the oil cylinder (2);
The reversing valve is used for controlling the exchange of oil inlet and outlet ports of the oil cylinder (2) and the movement speed of the oil cylinder (2);
The reversing piston is used for controlling the switching time of the reversing valve, so as to control the movement distance and frequency of the oil cylinder (2);
The valve body (1) is provided with a first cavity (3), the function switching valve is provided with a first valve core (4), the first valve core (4) is arranged in the first cavity (3), and the first cavity (3) is internally provided with a pedal pilot oil port (5), an oil inlet (6), an oil outlet (7), a rod cavity oil port (8), a rodless cavity oil port (9), a first oil groove (10) and a second oil groove (11);
in a normal mode, the pedal pilot oil port (5) is closed, the first valve core (4) is positioned at the left end of the first cavity (3), the oil inlet (6) is communicated with the rod cavity oil port (8), and the oil outlet (7) is communicated with the rodless cavity oil port (9);
In a vibration mode, the pedal pilot oil port (5) is opened, the first valve core (4) is positioned at the right end of the first cavity (3), the oil inlet (6) and the oil outlet (7) are closed, the rod cavity oil port (8) is communicated with the first oil groove (10), and the rodless cavity oil port (9) is communicated with the second oil groove (11);
A second cavity (12) is formed in the valve body (1), a second valve core (13) is arranged on the reversing valve, the second valve core (13) is arranged in the second cavity (12), a left cavity (14), a right cavity (15), a third oil groove (16), a fourth oil groove (17), a vibration valve plate A port (18) and a vibration valve plate B port (19) are formed in the second cavity (12), the third oil groove (16) is communicated with the first oil groove (10), and the fourth oil groove (17) is communicated with the second oil groove (11);
When the second valve core (13) is positioned at the left end of the second cavity (12), the third oil groove (16) is communicated with the vibration valve plate A port (18), and the fourth oil groove (17) is communicated with the vibration valve plate B port (19);
When the second valve core (13) is positioned at the right end of the second cavity (12), the fourth oil groove (17) is communicated with the vibration valve plate A port (18), and the third oil groove (16) is communicated with the vibration valve plate B port (19);
a third cavity (20) is formed in the valve body (1), a piston rod (21) is arranged on the reversing piston, the piston rod (21) is arranged in the third cavity (20), a left Lu Youkou (22), a right oil port (23), a fifth oil port (24) and a sixth oil port (25) are formed in the third cavity (20), the left Lu Youkou (22) is communicated with the third oil port (16) and the vibration valve plate B port (19) respectively, the right oil port (23) is communicated with the fourth oil port (17), the fifth oil port (24) is communicated with the left cavity (14), and the sixth oil port (25) is communicated with the right cavity (15);
When the piston rod (21) is positioned at the left end of the third cavity (20), the right oil port (23) is communicated with the sixth oil groove (25);
When the piston rod (21) is positioned at the right end of the third cavity (20), the left oil port (22) is communicated with the fifth oil groove (24); the oil port (8) of the rod cavity is in throttling arrangement when communicated with the first oil groove (10); and the left Lu Youkou (22) and the right oil port (23) are respectively provided with a detachable throttling plug (26).
2. A liquid-driven automatic vibration controller as defined in claim 1, wherein: the cross-sectional area of the left end of the piston rod (21) is larger than the cross-sectional area of the right end of the piston rod (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549902.7A CN114197568B (en) | 2021-12-17 | 2021-12-17 | Hydraulic drive automatic vibration controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549902.7A CN114197568B (en) | 2021-12-17 | 2021-12-17 | Hydraulic drive automatic vibration controller |
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| Publication Number | Publication Date |
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| CN114197568A CN114197568A (en) | 2022-03-18 |
| CN114197568B true CN114197568B (en) | 2024-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111549902.7A Active CN114197568B (en) | 2021-12-17 | 2021-12-17 | Hydraulic drive automatic vibration controller |
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| Country | Link |
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| CN (1) | CN114197568B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058003U (en) * | 1991-07-16 | 1993-02-02 | 株式会社加藤製作所 | Hydraulic control circuit for directional valve |
| JPH07139522A (en) * | 1993-11-12 | 1995-05-30 | Teijin Seiki Co Ltd | Fluid circuit for working cylinder of civil engineering construction machine |
| CN216766061U (en) * | 2021-12-17 | 2022-06-17 | 无锡广泰凿岩设备有限公司 | Liquid-driven automatic vibration controller |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3562730B2 (en) * | 1994-10-05 | 2004-09-08 | 株式会社小松製作所 | Hydraulic excavator work equipment vibration device |
| KR100328217B1 (en) * | 1996-04-30 | 2002-06-26 | 볼보 컨스트럭션 이키프먼트 홀딩 스웨덴 에이비 | Automatic Vibration System and Method of Hydraulic Construction Machinery |
| CN104674866A (en) * | 2015-01-30 | 2015-06-03 | 福建农林大学 | Vibration excavator adjustable in amplitude and frequency |
-
2021
- 2021-12-17 CN CN202111549902.7A patent/CN114197568B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058003U (en) * | 1991-07-16 | 1993-02-02 | 株式会社加藤製作所 | Hydraulic control circuit for directional valve |
| JPH07139522A (en) * | 1993-11-12 | 1995-05-30 | Teijin Seiki Co Ltd | Fluid circuit for working cylinder of civil engineering construction machine |
| CN216766061U (en) * | 2021-12-17 | 2022-06-17 | 无锡广泰凿岩设备有限公司 | Liquid-driven automatic vibration controller |
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| CN114197568A (en) | 2022-03-18 |
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