CN113291872A - Dual-purpose tippler is pressed and is held device - Google Patents
Dual-purpose tippler is pressed and is held device Download PDFInfo
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- CN113291872A CN113291872A CN202110704670.1A CN202110704670A CN113291872A CN 113291872 A CN113291872 A CN 113291872A CN 202110704670 A CN202110704670 A CN 202110704670A CN 113291872 A CN113291872 A CN 113291872A
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- container
- pressure head
- holding frame
- tippler
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- 238000003825 pressing Methods 0.000 claims abstract description 130
- 230000009471 action Effects 0.000 claims abstract description 29
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 230000007480 spreading Effects 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 11
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
- 208000010727 head pressing Diseases 0.000 description 8
- 238000004064 recycling Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G67/00—Loading or unloading vehicles
- B65G67/02—Loading or unloading land vehicles
- B65G67/24—Unloading land vehicles
- B65G67/32—Unloading land vehicles using fixed tipping installations
- B65G67/48—Vehicle tipplers
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Press Drives And Press Lines (AREA)
Abstract
The invention provides a pressing device of a dual-purpose tippler, which comprises a flat car pressing plate, a pressing mechanism and a container pressing head, wherein the flat car pressing plate is used for pressing a flat car, the pressing mechanism is connected with the flat car pressing plate and is used for driving the flat car pressing plate to move within a preset height range, and the container pressing head is hinged to the front part of the flat car pressing plate and is used for pressing a container, so that the pressing device with 2 pressing heads is formed; the side surface of the container pressure head is provided with a side hinge point which is used as an external force action point to drive the container pressure head to rotate around a hinge shaft hinged with the open wagon pressure plate; the external force drive is a linear drive unit capable of completing the telescopic action; the inward withdrawing method is adopted to replace the original design method of turning over on the item, so that the turning angle is small, and further the function conversion of oil cylinder driving is realized.
Description
Technical Field
The invention relates to the technical field of dual-purpose tipplers for containers and open wagons, in particular to a pressing and holding device of a dual-purpose tippler.
Background
The railway transportation container is a mainstream internationally at present, and the railway open-top container and open wagon dual-purpose tipper technology developed by our company can realize the operation of the container without leaving the open wagon and can be compatible with the open wagon.
The pressing device of the dual-purpose tippler can realize the compatible pressing or box operation of the container and the open wagon.
In order to prevent material accumulation in the process of dumping the open wagon, the design concept of a mode capable of converting the pressing length is adopted by the pressing device. The method is characterized in that a bracket is additionally arranged at the head of a conventional tipper pressing and holding frame, a swing type pressure head is hinged on the bracket, and the pressing and holding frame is shortened to be used for pressing the open wagon in a mode of fixing a hinge point after the container pressure head is turned upwards and backwards during conversion; the mode of fixing the hinge point is adopted to lengthen the pressing and holding frame after the container pressing head is turned over towards the front lower part, and the container pressing head is used for pressing and holding the container.
One problem faced with this approach is: during the function conversion, the angle of container pressure head upset is too big, and actual container pressure head function conversion flip angle is greater than 180, and this will lead to drive pivoted drive unit to select the difficulty, hardly adopts this kind of sharp drive unit of hydro-cylinder to realize the upset of container pressure head, leads to the cost higher, and the structure is comparatively complicated.
Disclosure of Invention
In view of the above technical problems, a dual-purpose tippler pressing device is provided. The invention mainly utilizes a small rotation angle to realize the length conversion of the vehicle pressing device, and further realizes the purpose of adopting a linear driving unit of an oil cylinder to finish the automatic function conversion, so that the pressing and holding device has simpler structure and lower manufacturing cost.
The technical means adopted by the invention are as follows:
a dual-purpose tippler pressing device comprises a gondola car pressing plate, a pressing mechanism and a container pressing head, wherein the gondola car pressing plate is used for pressing a gondola car, the pressing mechanism is connected with the gondola car pressing plate and is used for driving the gondola car pressing plate to move within a preset height range, the container pressing head is hinged to the front part of the gondola car pressing plate and is used for pressing a container, and the pressing device with 2 pressing heads is formed;
the side surface of the container pressure head is provided with a side hinge point which is used as an external force action point to drive the container pressure head to rotate around a hinge shaft hinged with the open wagon pressure plate;
the external force drive is a linear drive unit (usually, telescopic cylinder bodies such as a hydraulic cylinder, a pneumatic cylinder and the like are selected);
the minimum spreading angle of the container pressure head and the flat car pressure plate and the maximum spreading angle of the container pressure head and the flat car pressure plate are less than or equal to 180 degrees.
Further, in the above-mentioned case,
the container pressure head is hinged at the front upper part of the open wagon pressure head and is fixed through a pin shaft to form a front upper hinge point;
the side hinge point of the container pressure head is positioned close to the side edge of the open wagon pressure head and below the hinge point at the upper front part.
Further, in the above-mentioned case,
the linear driving unit can perform braking through the telescopic action, and the telescopic end of the linear driving unit is hinged with a side hinge point on the container pressure head.
Further, in the above-mentioned case,
the side edge of the open wagon pressure plate close to the container pressure head body is provided with a concave part for embedding the action part of the container pressure head body;
the retraction action of the linear driving unit drives the container pressure head to rotate inwards around a pin shaft of the upper hinge point, so that the action part of the container pressure head body is embedded into the concave part.
Further, in the above-mentioned case,
the pressure holding mechanism includes: the pressing and holding frame and the pressing and holding frame driving oil cylinder;
the rear part of the pressure holding frame is hinged with a tippler rotor through the tail part of the pressure holding frame;
the pressing and holding frame driving oil cylinder is connected between the pressing and holding frame and the tipper rotor and is used for driving the pressing and holding frame and all elements on the pressing and holding frame to move up and down;
the middle part of the pressing and holding frame is hinged with the telescopic end of the driving oil cylinder of the pressing and holding frame, and the other end of the driving oil cylinder of the pressing and holding frame is hinged with the rotor of the tippler.
According to the invention adopting the technical scheme, the inward-recycling turning method (replacing the top turning method in the prior art) is formed through the design of the side hinge points and the matching of the telescopic action of the linear driving unit, so that the turning angle of the recycling action of the container pressure head is very small, and further the purpose of completing the top turning action by using the linear driving replacement with lower cost to realize the original complex driving structure is realized.
Specifically, when the container is pressed, the linear driving unit extends to drive the container pressure head to rotate outwards and extend out, so that the pressing device is lengthened, the container pressure head reaches the container pressing position, and the container can be pressed by the pressing container pressure head; when the open wagon is pressed and held, the linear driving unit is shortened, the container pressure head is retracted inwards, the pressing and holding device is shortened, and the pressure head of the open wagon is pressed and held.
Compared with the prior art, the invention has the following advantages:
1. the whole structure is simple, and the maintenance cost is low.
2. And the cost is greatly reduced by adopting the linear driving unit.
3. The rotation angle becomes small and the energy consumption of the driving unit is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a detailed view of the dual-purpose tippler holding device with the container pressure head extended and in the container pressing position.
Fig. 2 is a cross-sectional view of a container pressure head of the present invention extending to turn over a container holding device for an open-topped container.
Fig. 3 is a detailed view of the dual-purpose tippler holding device of the present invention with the container ram retracted and in the truck-pressing position.
Fig. 4 is a cross-sectional view of the container ram retracted and dumping railway truck hold down device of the present invention.
Fig. 5 is a detailed view of a dual-purpose tippler holding device in a container pressing position, in which a container pressing head is put down forward and locked in the prior art.
Fig. 6 is a detailed view of a dual-purpose tippler holding device in a flatcar position with a container pressure head locked up in a flip-up position according to the prior art.
In FIGS. 1-4: 1. a pressing and holding frame; 2. a support at the upper part of the pressure-holding frame; 3. a container ram; 4. the container pressure head drives the oil cylinder; 5. the upper hinge point of the container pressure head; 6. the container pressure head drives the hinge point at the rear part of the oil cylinder; 7. the container pressure head drives the head hinge point of the oil cylinder; 8, pressing a pressure head of the open wagon; 9. a container pressure head pressing plate; 10. the pressing and holding frame drives the oil cylinder; 11. a tippler rotor; 12. an open-top container; 13. a railway open wagon.
In FIGS. 5-6: 1', a pressure holding frame; 2', pressing the upper bracket of the holding frame; 3', a container pressure head; 4', the upper hinge point of the container pressure head; 5', a pressure head locking hinge point; 6', a pressure head pressing plate of the open wagon; 7' and a container pressure head pressing plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
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 only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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 is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. 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, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the absence of any contrary indication, these directional terms are not intended to indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The invention provides a pressing device of a dual-purpose tippler, which comprises a flat car pressing plate, a pressing mechanism and a container pressing head, wherein the flat car pressing plate is used for pressing a flat car, the pressing mechanism is connected with the flat car pressing plate and is used for driving the flat car pressing plate to move within a preset height range, and the container pressing head is hinged to the front part of the flat car pressing plate and is used for pressing a container, so that the pressing device with 2 pressing heads is formed;
the side surface of the container pressure head is provided with a side hinge point which is used as an external force action point to drive the container pressure head to rotate around a hinge shaft hinged with the open wagon pressure plate;
the external force drive is a linear drive unit (usually, telescopic cylinder bodies such as a hydraulic cylinder, a pneumatic cylinder and the like are selected);
the minimum spreading angle of the container pressure head and the flat car pressure plate and the maximum spreading angle of the container pressure head and the flat car pressure plate are less than or equal to 180 degrees.
The container pressure head is hinged at the front upper part of the open wagon pressure head and is fixed through a pin shaft to form a front upper hinge point;
the side hinge point of the container pressure head is positioned close to the side edge of the open wagon pressure head and below the hinge point at the upper front part.
The linear driving unit can perform braking through the telescopic action, and the telescopic end of the linear driving unit is hinged with a side hinge point on the container pressure head.
The side edge of the open wagon pressure plate close to the container pressure head body is provided with a concave part for embedding the action part of the container pressure head body;
the retraction action of the linear driving unit drives the container pressure head to rotate inwards around a pin shaft of the upper hinge point, so that the action part of the container pressure head body is embedded into the concave part.
As shown in fig. 1-4, the linear driving unit selects a hydraulic cylinder as a container pressure head driving oil cylinder 4 in the figure;
the front upper hinge point is the upper hinge point 5 of the container pressure head in the figure;
the effect portion of container pressure head body does: the assembling position of the container pressure head pressing plate 9;
the concave part is provided with a side of the upper bracket 2 of the pressure support frame close to the container pressure head 3;
the pressing and holding frame 1 is a main supporting piece of the pressing and holding device, the rear part of the pressing and holding frame is hinged with a tipper rotor 11 through the tail part of the pressing and holding frame, the middle part of the pressing and holding frame is hinged with a driving oil cylinder 10 of the pressing and holding frame, and other dual-purpose tipper action units such as a container pressing head 3 and the like are arranged on the pressing and holding frame;
the upper support 2 of the pressure holding frame is a main support part of a container pressure head 3 and the like, is arranged above the pressure frame 1, is provided with a hinge point 5 at the upper part of the container pressure head and a hinge point 6 at the rear part of a container pressure head driving oil cylinder, provides support for the container pressure head 3 and the container pressure head driving oil cylinder 4, and moves along with the action of the pressure holding frame 1;
the container pressure head 3 is used for pressing and holding a container, the upper part of the container pressure head is hinged with the upper support 2 of the pressing and holding frame, and the side hinge point of the side surface is hinged with the hinge point 7 of the head part of the container pressure head driving oil cylinder;
the container pressure head driving oil cylinder 4 is a part for driving the container pressure head 3, the head part (the hinge point 7 of the container pressure head driving oil cylinder head) is hinged with the side surface hinge point (the side hinge point) of the container pressure head 3, the rear part (the hinge point 6 of the container pressure head driving oil cylinder rear part) is hinged with the upper support 2 of the pressure holding frame, and the container pressure head 3 is extended and retracted through the extension and retraction of the support;
the upper hinge point 5 of the container pressure head is a hinge point for connecting the upper bracket 2 of the pressure support frame and the container pressure head 3, and the container pressure head 3 can rotate around the hinge point;
the hinge point 6 at the rear part of the container pressure head driving oil cylinder is fixed on the upper support 2 of the pressure support frame, is a hinge point for connecting the container pressure head driving oil cylinder 4 and the upper support 2 of the pressure support frame and provides support for the container pressure head driving oil cylinder 4;
the container pressure head driving oil cylinder head hinge point 7 is a hinge point for connecting the container pressure head driving oil cylinder 4 and the container pressure head 3, and the container pressure head 3 is driven to rotate around the hinge point 5 on the upper part of the container pressure head through the hinge point;
the open wagon pressure head pressing plate 8 is arranged in front of the pressure frame 1 and is used for pressing and holding the railway open wagon 13;
the container pressure head pressing plate 9 is arranged on the container pressure head 3 and is used for pressing and holding the container 12;
the pressing and holding frame driving oil cylinder 10 is connected between the pressing and holding frame 1 and the tipper rotor 11 and is used for driving the pressing and holding frame 1 and all elements on the pressing and holding frame to move up and down;
the tippler rotor 11 is a supporting structure of the car pressing device;
the open top container 12 is a flat car transportation open top container entering the tipper, and is turned and unloaded together with the tipper rotor 11 after being pressed and held after entering the tipper rotor;
the open wagon 13 is a railway open wagon entering the tippler, and overturns and unloads together with the tippler rotor 11 after being pressed and held;
the working principle is as follows:
1) the state of the dumping flat car transporting the open top container:
as shown in the attached figures 1 and 2:
the container pressure head driving oil cylinder 4 hinged on the upper support 2 of the pressure holding frame extends, the head hinge point 7 of the pressure head driving oil cylinder connected to the side surface of the container pressure head 3 pushes the container pressure head 3 to rotate around the upper hinge point 5 of the container pressure head towards the direction leaving relative to the pressure head 8 of the open wagon, so that the pressure holding device is in an extension state, and the container pressure head driving oil cylinder 4 is locked after reaching the position, so that the container pressure head 3 is in a fixed position in a container state;
after a railway flat car carries an open-topped container 12 into a tipper rotor 11, a pressing and holding frame driving oil cylinder 10 contracts to drive a pressing and holding frame 1 and drive a support 2 at the upper part of the pressing and holding frame through the pressing and holding frame 1 to drive a container pressing head 3 to move downwards, and finally a container pressing head pressing plate 9 is pressed above corner fittings at the upper parts of two sides of the open-topped container 12 in a flat manner to finish the pressing and holding action of the open-topped container;
2) and (3) dumping the railway open wagon:
as shown in the attached figures 3 and 4:
the container pressure head driving oil cylinder 4 hinged on the upper support 2 of the pressure holding frame is shortened, the head hinge point 7 of the pressure head driving oil cylinder connected to the side surface of the container pressure head 3 pushes the container pressure head 3 to rotate around the upper hinge point 5 of the container pressure head to the approaching direction relative to the open wagon pressure head 8, so that the pressure holding device is in a shortened state, and the container pressure head driving oil cylinder 4 is locked after the position close to the open wagon pressure head 8 is reached, so that the container pressure head 3 is in a fixed position in the open wagon state;
after the railway open wagon 13 enters the tipper rotor 11, the pressing and holding frame driving oil cylinder 10 contracts to drive the pressing and holding frame 1 to move downwards through the pressing and holding frame 1, and finally the open wagon pressure head pressing plate 8 is pressed to the upper edge beam of the open wagon 13 in a flat surface mode to finish the pressing and holding action of the open top container;
because the container and the open wagon are pressed and held by different pressing plates, the plane contact of the pressing and holding can be basically ensured, and when the open wagon is overturned, the problem of material accumulation can not occur because the container pressing head 3 is hidden above the pressing plate 8 of the pressing head of the open wagon.
Through the design of the side hinge point and the matching of the telescopic action of the linear driving unit, an inward-recycling overturning method (replacing the top overturning method in the prior art) is formed, so that the recycling action corner of the container pressure head is very small, and the purpose of completing the top overturning action by using the original complex driving structure by linear driving replacement with lower cost is further realized.
In the position conversion process of the container pressure head 3, the turning angle is very small due to inward shortening, and the linear driving of the oil cylinder can be realized to finish the action.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (5)
1. The utility model provides a device is held to dual-purpose tipper pressure which characterized in that: the container pressing device comprises a gondola car pressing plate, a pressing mechanism and a container pressing head, wherein the gondola car pressing plate is used for pressing a gondola car, the pressing mechanism is connected with the gondola car pressing plate and is used for driving the gondola car pressing plate to move within a preset height range, the container pressing head is hinged to the front part of the gondola car pressing plate and is used for pressing a container, and a pressing device with 2 pressing heads is formed;
the side surface of the container pressure head is provided with a side hinge point which is used as an external force action point to drive the container pressure head to rotate around a hinge shaft hinged with the open wagon pressure plate;
the external force drive is a linear drive unit capable of completing telescopic action;
the minimum spreading angle of the container pressure head and the flat car pressure plate and the maximum spreading angle of the container pressure head and the flat car pressure plate are less than or equal to 180 degrees.
2. The dual-purpose tippler clamping device of claim 1, wherein,
the container pressure head is hinged at the front upper part of the open wagon pressure head and is fixed through a pin shaft to form a front upper hinge point;
the side hinge point of the container pressure head is positioned close to the side edge of the open wagon pressure head and below the hinge point at the upper front part.
3. The dual-purpose tippler clamping device as claimed in claim 1 or 2, wherein,
the linear driving unit can perform braking in the telescopic action, and the telescopic end of the linear driving unit is hinged to the side hinge point on the container pressure head.
4. The dual-purpose tippler clamping device of claim 3, wherein,
the side edge of the open wagon pressure plate close to the container pressure head body is provided with a concave part for embedding the action part of the container pressure head body;
the retraction action of the linear driving unit drives the container pressure head to rotate inwards around a pin shaft of the upper hinge point, so that the action part of the container pressure head body is embedded into the concave part.
5. The dual-purpose tippler clamping device as claimed in claim 1 or 2, wherein,
the pressure holding mechanism includes: the pressing and holding frame and the pressing and holding frame driving oil cylinder;
the rear part of the pressure holding frame is hinged with a tippler rotor through the tail part of the pressure holding frame;
the pressure holder driving oil cylinder is connected between the pressure holder and the tippler rotor and is used for driving the pressure holder and each element on the pressure holder to move up and down;
the middle part of the pressing and holding frame is hinged with the telescopic end of the driving oil cylinder of the pressing and holding frame, and the other end of the driving oil cylinder of the pressing and holding frame is hinged with the rotor of the tippler.
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| CN202110704670.1A CN113291872B (en) | 2021-06-24 | 2021-06-24 | Dual-purpose tippler pressing device |
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| CN202110704670.1A CN113291872B (en) | 2021-06-24 | 2021-06-24 | Dual-purpose tippler pressing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655736A (en) * | 2022-02-18 | 2022-06-24 | 大连华锐重工集团股份有限公司 | Vertical pressing device with sector action |
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| 王浩洋;苏伟;刘震;: "三翻翻车机的设计及应用", 科技与创新, no. 10, pages 110 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114655736A (en) * | 2022-02-18 | 2022-06-24 | 大连华锐重工集团股份有限公司 | Vertical pressing device with sector action |
| CN114655736B (en) * | 2022-02-18 | 2023-07-28 | 大连华锐重工集团股份有限公司 | Perpendicular car device that presses of sector action |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113291872B (en) | 2024-02-02 |
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