CN215444561U - Synchronous hydraulic system of series cylinder - Google Patents
Synchronous hydraulic system of series cylinder Download PDFInfo
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- CN215444561U CN215444561U CN202121096258.8U CN202121096258U CN215444561U CN 215444561 U CN215444561 U CN 215444561U CN 202121096258 U CN202121096258 U CN 202121096258U CN 215444561 U CN215444561 U CN 215444561U
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Abstract
The utility model provides a synchronous hydraulic system of series cylinders, which comprises a hydraulic pump and at least one set of hydraulic cylinder group. The hydraulic cylinder groups are connected in parallel, each hydraulic cylinder group comprises a plurality of hydraulic cylinders connected in series, the oil path of the oil inlet end and the oil return end of each hydraulic cylinder is connected through the oil path provided with an overflow valve, the oil outlet of each hydraulic pump is respectively connected with each three-position four-way electromagnetic directional valve through a main oil supply path, each three-position four-way electromagnetic directional valve is respectively connected with the first hydraulic cylinder and the last hydraulic cylinder of the hydraulic cylinder group through a first oil path and a second oil path, and each three-position four-way electromagnetic directional valve is further connected with an oil tank through a main oil return path. The switching between the oil passages of different hydraulic cylinder groups in the hydraulic system is controlled by the on-off of the three-position four-way electromagnetic directional valve, the jacking and the falling of the hydraulic cylinders in the corresponding hydraulic cylinder groups are controlled by the transposition of the three-position four-way electromagnetic directional valve, the control difficulty is low, and the hydraulic pumps can be selected from one-way gear pumps and two-way gear pumps, so that more hydraulic stations can be selected.
Description
Technical Field
The utility model belongs to the technical field of hydraulic cylinders, and particularly relates to a synchronous hydraulic system of series cylinders.
Background
The hydraulic oil cylinder is widely applied to equipment such as a bucket-wheel stacker-reclaimer, hoisting machinery, engineering machinery and the like, slowly occupies more important positions in the field of intensive storage, and is mainly simple in mechanism and convenient to design and manufacture. However, in most occasions, the pitching mechanism and the ejection mechanism of the equipment are driven by double oil cylinders or multiple oil cylinders, so that the problem of asynchronous oil cylinders in the ejection process of the oil cylinders is solved.
In the field of intensive storage, the four shuttle vehicles use synchronous valve synchronization, synchronous motor synchronization, synchronous cylinder synchronization and series cylinder synchronization. A synchronous valve and a synchronous motor synchronous hydraulic system have certain lack of synchronous precision in a shuttle vehicle hydraulic system with relatively small hydraulic oil flow. The synchronous cylinder is high in manufacturing cost, large in size, complex in pipeline and not suitable for the condition that the space requirement of the shuttle car is large. The control loops and oil supplementing loops commonly used by the series cylinders are complex, and the two-position two-way electromagnetic stop valves are more, so that the control difficulty is increased, the stress areas and the volumes of the rod cavity and the rodless cavity of the oil cylinder with the single output shaft are unequal, the ejection directions of the oil cylinders are inconsistent in the series connection process, oil is supplemented, and the principle is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problems in the prior art, and aims to provide a series cylinder synchronous hydraulic system.
In order to achieve the purpose, the utility model adopts the following technical scheme: the hydraulic system comprises a hydraulic pump, at least one set of hydraulic cylinder groups and a three-position four-way electromagnetic reversing valve which is arranged corresponding to each set of hydraulic cylinder groups; when the hydraulic cylinders have two or more sets, the hydraulic cylinder groups are connected in parallel, each set of hydraulic cylinder group comprises two or more hydraulic cylinders which synchronously run, the hydraulic cylinders in the same set of hydraulic cylinder group are connected in series, and the oil paths of the oil inlet end and the oil return end of each hydraulic cylinder are connected through the oil path provided with an overflow valve; the hydraulic pump is provided with an oil outlet, the oil outlet of the hydraulic pump is connected with a main oil supply way, and the oil outlet end of the main oil supply way is respectively connected with the first port of each three-position four-way electromagnetic directional valve; the second port of each three-position four-way electromagnetic directional valve is connected with the first hydraulic cylinder of the corresponding hydraulic cylinder group through a first branch oil way, the third port of each three-position four-way electromagnetic directional valve is connected with the last hydraulic cylinder of the corresponding hydraulic cylinder group through a second branch oil way, the fourth port of each three-position four-way electromagnetic directional valve is connected with the oil tank through a main oil return way, and a stop valve is arranged on the main oil return way.
In the technical scheme, the switching between oil paths of different hydraulic cylinder groups in the hydraulic system is controlled by the on-off of the three-position four-way electromagnetic directional valve, the jacking and the falling of the hydraulic cylinders in the corresponding hydraulic cylinder groups are controlled by the transposition of the three-position four-way electromagnetic directional valve, the control difficulty is low, the hydraulic pump can be a one-way gear pump or a two-way gear pump, and more hydraulic stations can be selected.
In a preferred embodiment of the utility model, the main oil supply passage is connected to the oil tank through an oil passage provided with a check valve that allows one-way flow of hydraulic oil from the oil tank to the main oil supply passage.
In a preferred embodiment of the present invention, the oil tank further includes an overload protection oil path connecting the main oil supply path and the oil tank, and the overload protection oil path is provided with an overflow valve to perform overload protection on the main oil supply path.
In a preferred embodiment of the utility model, the shut-off valve on the main return line and all three-position four-way solenoid directional valves are integrated in one integrated block. Due to the arrangement of the integrated blocks, an oil way is simplified, and the structure of the hydraulic system is more compact.
In a preferred embodiment of the present invention, the integrated block is provided with a pressure measuring interface communicated with the main oil supply path and/or the main oil return path, and the pressure measuring interface is connected with a pressure measuring meter. The pressure gauge is arranged to facilitate detection of oil pressure of the pipeline of the hydraulic system.
In another preferred embodiment of the present invention, the shutoff valve on the main return line is a two-position two-way electromagnetic check valve.
In another preferred embodiment of the utility model, the main oil return passage is further provided with an adjustable throttle valve located downstream of the two-position two-way electromagnetic check valve.
Among the above-mentioned technical scheme, through setting up adjustable throttle, can control the speed of system oil return, prevent that the hydraulic cylinder pole from falling too fast because load pressure is too big, reduce the impact.
In another preferred embodiment of the present invention, the main oil return path is further connected to a pressure relief oil path connected in parallel with the main oil return path, and a pressure relief valve is provided on the pressure relief oil path and is a two-position two-way electromagnetic one-way valve. When the pressure of the main oil return path is overlarge, the pressure relief oil path is used for discharging, so that the main oil return path is protected.
In another preferred embodiment of the utility model, the hydraulic pump is a one-way gear pump or a two-way gear pump. The hydraulic station motor and the pump station can be in one direction or two directions, and people can select the hydraulic station motor and the pump station according to actual conditions.
Compared with the prior art, the utility model has the following beneficial effects:
1) a plurality of double-output-shaft hydraulic cylinders are connected in series, so that the number of oil pipes is greatly reduced, unnecessary oil pipe joints are reduced, the oil leakage probability of a hydraulic system is reduced, and the maintenance cost is reduced.
2) The ejection of pneumatic cylinder is more stable, and anti unbalance loading ability is strong, guarantees that automobile body and goods can not appear inclining when the automobile body switching-over of shuttle, ejecting goods, guarantees that the goods is stable, can effectual reduction because of the loss that the goods unbalance loading brought.
3) The three-position four-way electromagnetic directional valve controls the switching of an oil way and the ejection and the fall-back of a hydraulic cylinder in the hydraulic system, so that the oil way is simple and the control is convenient.
4) The oil is conveniently supplemented, the pressure of an overflow valve connected with the hydraulic cylinders is well adjusted, and through normal operation, hydraulic oil between the hydraulic cylinders can be supplemented conveniently and quickly.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic diagram of a tandem cylinder synchronous hydraulic system according to an embodiment of the present application.
Reference numerals in the drawings of the specification include: Y1/Y2/Y3/Y4 is a hydraulic cylinder; RV1/RV2/RV3/RV4/II-2 is an overflow valve; i is an integrated block; I-1.1/I-1.2 is a three-position four-way electromagnetic directional valve; i-2 is a pressure gauge; i-3 is a stop valve; i-4 is an adjustable throttle valve; i-5 is a pressure release valve; A1/1A/1B/2A/2B/B1 is an interface of the integrated block I; MA is a pressure measuring interface; II is a hydraulic station valve block; II-1/6 is a check valve; a is a hydraulic station valve block outlet; 3 is a motor; 4 is a hydraulic pump; 5 is a liquid level meter; 6 is a one-way valve; and 7 is an oil tank.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model provides a tandem cylinder synchronous hydraulic system, which comprises a hydraulic pump 4, at least one set of hydraulic cylinder groups and a three-position four-way electromagnetic reversing valve arranged corresponding to each set of hydraulic cylinder groups in a preferred embodiment of the utility model as shown in figure 1. In this embodiment, two sets of hydraulic cylinder groups are provided as an example, and the number of the corresponding three-position four-way electromagnetic directional valves is also two, namely a three-position four-way electromagnetic directional valve I-1.1 and a three-position four-way electromagnetic directional valve I-1.2.
The two sets of hydraulic cylinder groups are connected in parallel, each set of hydraulic cylinder group comprises two or more hydraulic cylinders which synchronously run, the hydraulic cylinders are double-piston-rod hydraulic cylinders, the hydraulic cylinders in the same set of hydraulic cylinder group are connected in series, and the oil paths of the oil inlet end and the oil return end of each hydraulic cylinder are connected through the oil path provided with an overflow valve. Each set of hydraulic cylinder group shown in fig. 1 includes four hydraulic cylinders, in each set of hydraulic cylinder group, a first hydraulic cylinder Y1, a second hydraulic cylinder Y2, a third hydraulic cylinder Y3 and a fourth hydraulic cylinder Y4 (i.e., the last hydraulic cylinder) are arranged from left to right in sequence, and corresponding relief valves connected to the hydraulic cylinders are a relief valve RV1, a relief valve RV2, a relief valve RV3 and a relief valve RV4, respectively.
The hydraulic pump 4 is provided with an oil outlet, the oil outlet of the hydraulic pump 4 is connected with a main oil supply path, the oil outlet end of the main oil supply path is respectively connected with the first port of each three-position four-way electromagnetic directional valve, for example, the main oil supply path is respectively connected with the first ports of the two three-position four-way electromagnetic directional valves through two oil pipes connected in parallel.
The second ports of the three-position four-way electromagnetic directional valves I-1.1 and I-1.2 are connected with the first hydraulic cylinder Y1 of the corresponding hydraulic cylinder group through a first branch oil way, the third ports of the three-position four-way electromagnetic directional valves I-1.1 and I-1.2 are connected with the last hydraulic cylinder Y4 of the corresponding hydraulic cylinder group through a second branch oil way, the fourth ports of the three-position four-way electromagnetic directional valves I-1.1 and I-1.2 are connected with the oil tank 7 through a main oil return way, for example, the fourth ports of the two three-position four-way electromagnetic directional valves I-1.1 and I-1.2 are connected with the main oil return way through two oil pipes arranged in parallel, and the main oil return way is provided with a stop valve I-3.
By adopting the technical scheme, when the hydraulic system normally operates, for example, when a hydraulic cylinder is lifted, the hydraulic pump 4, the main oil supply way, the three-position four-way electromagnetic directional valve (I-1.1 or I-1.2), the first branch oil way, the hydraulic cylinder group, the second branch oil way, the three-position four-way electromagnetic directional valve, the main oil return way and the hydraulic pump 4 form a closed circulating oil way. When the hydraulic cylinder falls back, the hydraulic pump 4, the main oil supply path, the three-position four-way electromagnetic directional valve, the second branch oil path, the hydraulic cylinder group, the three-position four-way electromagnetic directional valve, the first branch oil path, the main oil return path and the hydraulic pump 4 form a closed circulating oil path.
The hydraulic system is a closed hydraulic system, has a compact structure, has few chances of contacting with air, is not easy to permeate into the system, and has good transmission stability; and the three-position four-way electromagnetic directional valve controls the hydraulic cylinder to lift up and fall back, so that the hydraulic pump 3 can select a one-way gear pump or a two-way gear pump, and more hydraulic stations are selected.
Wherein, the oil tank 7 is also provided with a liquid level meter 5 for detecting the liquid level in the oil tank 7.
In some embodiments, the main oil supply is connected to the oil tank 7 through an oil passage provided with a check valve 6, the check valve 6 allowing one-way flow of hydraulic oil from the oil tank 7 to the main oil supply.
Furthermore, the hydraulic system also comprises an overload protection oil way which is connected with the main oil supply way and the oil tank 7, and an overflow valve II-2 is arranged on the overload protection oil way so as to carry out overload protection on the main oil supply way. Furthermore, the main oil supply circuit is also provided with a one-way valve II-1, and the joint of the overload protection oil circuit and the main oil supply circuit is positioned at the upstream of the one-way valve II-1.
In practice, the check valve II-1 on the main oil supply line and the overflow valve II-2 on the overload protection oil line may be integrated on one valve block to form a hydraulic station valve block II, an inlet of the hydraulic station valve block II is connected to an oil outlet of the hydraulic pump 3, and an outlet a of the hydraulic station valve block II is connected to the main oil supply line.
In some embodiments, the stop valve I-3 on the main return line is a two-position two-way electromagnetic one-way valve. Furthermore, an adjustable throttle valve I-4 positioned at the downstream of the two-position two-way electromagnetic one-way valve is also arranged on the main oil return path.
Furthermore, the main oil return path is also connected with a pressure relief oil path which is arranged in parallel with the main oil return path, a pressure relief valve I-5 is arranged on the pressure relief oil path, and the pressure relief valve I-5 is also a two-position two-way electromagnetic one-way valve. The oil inlet end of the pressure relief oil path connected with the main oil return path is positioned at the upstream of the stop valve I-3, and the oil outlet end of the pressure relief oil path connected with the main oil return path is positioned at the downstream of the adjustable throttle valve I-4.
In practice, the stop valve I-3, the adjustable throttle valve I-4, the pressure release valve I-5 and the two three-position four-way electromagnetic directional valves I-1.1 and I-1.2 can be integrated and configured on one valve block to form an integrated block I. The manifold block I is provided with a connector A1 connected with a main oil supply path, connectors 1A and 1B respectively connected with a first branch oil path and a second branch oil path of a left hydraulic cylinder group, connectors 2A and 2B respectively connected with a first branch oil path and a second branch oil path of a right hydraulic cylinder group, and a connector B1 connected with a main oil return path.
In other embodiments, the manifold block I is provided with a pressure measuring interface MA communicated with the main oil supply path and/or the main oil return path, and the pressure measuring interface MA is connected with a pressure measuring meter I-2 for detecting oil pressure. As shown in fig. 1, two pressure measuring ports MA respectively communicated with the main oil supply path and the main oil return path are simultaneously disposed on the integrated block I, and only one of the pressure measuring ports MA may be disposed according to actual conditions.
When the hydraulic system works and needs the hydraulic cylinder of the hydraulic cylinder group on the left path to lift, the working process of the hydraulic system is as follows: the motor 3 is started to drive the hydraulic pump 4 to operate, hydraulic oil is sucked from the oil tank 7 through the one-way valve 6, enters the hydraulic station valve block II, is discharged from the interface A of the hydraulic station valve block II through the II-1 one-way valve, and then enters the manifold block I through the port A1. Opening the three-position four-way electromagnetic directional valve I-1.1, closing the three-position four-way electromagnetic directional valve I-1.2, enabling hydraulic oil to reach a connector 1A of the integrated block I from the three-position four-way electromagnetic valve I-1.1, entering a lower oil cavity of a first hydraulic cylinder Y1 through the connector 1A, ejecting a cylinder rod of the first hydraulic cylinder Y1, and enabling the hydraulic oil to enter an oil channel between a first hydraulic cylinder Y1 and a second hydraulic cylinder Y2 through an overflow valve RV1 for oil supplement and ejecting a cylinder rod of a second hydraulic cylinder Y2 after the hydraulic oil pressure reaches an overflow valve RV1 set value. After the hydraulic oil pressure reaches the RV2 set value, hydraulic oil and gas in a pipeline enter an oil path between the second hydraulic cylinder Y2 and the third hydraulic cylinder Y3 through an overflow valve RV2, and the like until the hydraulic oil flows to a connector 1B of the manifold block I from an upper oil cavity of the fourth hydraulic cylinder Y4, reaches a three-position four-way electromagnetic directional valve I-1.1, then enters a main oil return path, then sequentially passes through an opened stop valve I-3 and an adjustable throttle valve I-4, is discharged from a connector B1 of the manifold block I, and flows back to the oil tank 7, so that the jacking of four oil cylinders of the left hydraulic cylinder group is realized.
When the hydraulic cylinders of the left hydraulic cylinder group are required to fall back, the three-position four-way electromagnetic directional valve I-1.1 is switched, hydraulic oil conveyed by the hydraulic pump 4 through the main oil supply path enters the upper oil cavity of the fourth hydraulic cylinder Y4 from the interface 1B of the manifold block I and enters the upper oil cavities of the third hydraulic cylinder Y3, the second hydraulic cylinder Y3 and the first hydraulic cylinder Y1, and the hydraulic oil in the upper oil cavity pushes the cylinder rods of the four hydraulic cylinders to fall back. The hydraulic oil flows back to the interface 1A of the manifold block I from the lower oil cavity of the first hydraulic cylinder Y1, reaches the three-position four-way electromagnetic reversing valve I-1.1 after transposition, then enters the main oil return path, sequentially passes through the opened stop valve I-3 and the adjustable throttle valve I-4, is discharged from the interface B1 of the manifold block I, and flows back to the oil tank 7, so that the four oil cylinders of the left hydraulic cylinder group fall back.
Similarly, when the hydraulic cylinder of the left hydraulic cylinder group is required to be jacked, the three-position four-way electromagnetic directional valve I-1.2 is opened, the three-position four-way electromagnetic directional valve I-1.1 is closed, hydraulic oil enters the lower oil cavity of the first hydraulic cylinder Y1 from the interface 2A of the manifold block I, flows to the interface 2B of the manifold block I from the upper oil cavity of the fourth hydraulic cylinder Y4, reaches the three-position four-way electromagnetic directional valve I-1.2, then enters the main oil return circuit, sequentially passes through the stop valve I-3 and the adjustable throttle valve I-4, is discharged from the interface B1 of the manifold block I, and flows back to the oil tank 7, so that jacking of the four oil cylinders of the right hydraulic cylinder group is realized.
Similarly, when the hydraulic cylinders of the right hydraulic cylinder group need to fall back, after the three-position four-way electromagnetic directional valve I-1.2 is switched, hydraulic oil enters an upper oil cavity of the fourth hydraulic cylinder Y4 from the interface 2B of the integrated block I and enters the upper oil cavities of the third hydraulic cylinder Y3, the second hydraulic cylinder Y3 and the first hydraulic cylinder Y1, and the hydraulic oil pushes the cylinder rods of the four hydraulic cylinders to fall back. The hydraulic oil flows back to the interface 2A of the manifold block I from the lower oil cavity of the first hydraulic cylinder Y1, reaches the three-position four-way electromagnetic reversing valve I-1.2 after transposition, then enters the main oil return path, sequentially passes through the stop valve I-3 and the adjustable throttle valve I-4, is discharged from the interface B1 of the manifold block I, and flows back to the oil tank 7, so that the four oil cylinders of the right hydraulic cylinder group fall back.
In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like 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 utility model. In this specification, the schematic representations of the terms used above 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.
While embodiments of the utility model have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A synchronous hydraulic system of series cylinders is characterized by comprising a hydraulic pump, at least one set of hydraulic cylinder groups and three-position four-way electromagnetic reversing valves arranged corresponding to each set of hydraulic cylinder groups;
when the hydraulic cylinders have two or more sets, the hydraulic cylinder groups are connected in parallel, each set of hydraulic cylinder group comprises two or more hydraulic cylinders which synchronously run, the hydraulic cylinders in the same set of hydraulic cylinder group are connected in series, and the oil paths of the oil inlet end and the oil return end of each hydraulic cylinder are connected through the oil path provided with an overflow valve;
the hydraulic pump is provided with an oil outlet, the oil outlet of the hydraulic pump is connected with a main oil supply way, and the oil outlet end of the main oil supply way is respectively connected with the first port of each three-position four-way electromagnetic directional valve;
the second port of each three-position four-way electromagnetic directional valve is connected with the first hydraulic cylinder of the corresponding hydraulic cylinder group through a first branch oil way, the third port of each three-position four-way electromagnetic directional valve is connected with the last hydraulic cylinder of the corresponding hydraulic cylinder group through a second branch oil way, the fourth port of each three-position four-way electromagnetic directional valve is connected with the oil tank through a main oil return way, and a stop valve is arranged on the main oil return way.
2. The tandem cylinder synchronous hydraulic system of claim 1, wherein the main oil supply passage is connected to the oil tank through an oil passage provided with a check valve that allows hydraulic oil to flow from the oil tank to the main oil supply passage in one direction.
3. The synchronous hydraulic system of claim 1, further comprising an overload protection circuit connecting the main oil supply circuit and the oil tank, wherein the overload protection circuit is provided with an overflow valve to protect the main oil supply circuit from overload.
4. The tandem cylinder synchronous hydraulic system of claim 1, wherein the shut-off valve on the main return and all three-position four-way solenoid directional valves are integrated on a single integrated block.
5. The synchronous hydraulic system of claim 4, wherein the manifold block is provided with a pressure measuring port communicated with the main oil supply path and/or the main oil return path, and the pressure measuring port is connected with a pressure measuring gauge.
6. The tandem cylinder synchronous hydraulic system according to any one of claims 1-5, wherein the shut-off valve on the main return is a two-position, two-way electromagnetic check valve.
7. The tandem cylinder synchronous hydraulic system of claim 6 wherein the main oil return is further provided with an adjustable throttle valve downstream of the two-position, two-way solenoid check valve.
8. The synchronous hydraulic system of claim 6, wherein the main oil return path is further connected with a pressure relief oil path connected in parallel with the main oil return path, and the pressure relief oil path is provided with a pressure relief valve which is a two-position two-way electromagnetic one-way valve.
9. The tandem cylinder synchronous hydraulic system according to any one of claims 1-5, wherein the hydraulic pump is a unidirectional gear pump or a bidirectional gear pump.
10. A tandem cylinder synchronous hydraulic system according to any one of claims 1-5, wherein the hydraulic cylinder is a dual piston rod hydraulic cylinder.
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| CN202121096258.8U CN215444561U (en) | 2021-05-21 | 2021-05-21 | Synchronous hydraulic system of series cylinder |
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| CN202121096258.8U CN215444561U (en) | 2021-05-21 | 2021-05-21 | Synchronous hydraulic system of series cylinder |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493922A (en) * | 2022-09-29 | 2022-12-20 | 四川宁怡科技有限公司 | High-throughput testing module and device capable of providing different stress-strain loads |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115493922A (en) * | 2022-09-29 | 2022-12-20 | 四川宁怡科技有限公司 | High-throughput testing module and device capable of providing different stress-strain loads |
| CN115493922B (en) * | 2022-09-29 | 2024-01-30 | 四川宁怡科技有限公司 | High-flux test module and device capable of providing different stress-strain loads |
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