Continuous striding hidden type lifting anti-flood wall
By designing a continuous, segmented, concealed, and lifting flood control wall, and utilizing a hydraulic control system to achieve the concealment and rapid water blocking of the flood control wall, the problem of insufficient aesthetics and practicality of traditional flood control walls has been solved, thereby improving the city's flood control effectiveness and landscape aesthetics.
Patent Information
- Application Number
- CN202423275299.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-30
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-30
AI Technical Summary
Traditional flood control walls have shortcomings in terms of landscape design, are inconvenient to dismantle and assemble, affect the urban landscape and traffic, and cannot be hidden during the non-flood season, resulting in insufficient aesthetics and practicality.
Design a continuous, spanned, concealed, and lifting flood wall. It adopts a hydraulic control system and uses a combination of columns and lifting gates. During the non-flood season, it sinks into the gatehouse for concealment, and during the flood season, it rises quickly to block water. The columns can be decorated to maintain aesthetics and do not affect passage.
It achieves a unified approach to flood control, landscaping, and traffic, enhancing the quality of urban life. Its automated operation reduces maintenance costs and does not affect the urban landscape during non-flood seasons.
Smart Images

Figure CN223675249U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a flood control facility especially to a continuous cross hidden lifting flood control wall. BACKGROUND
[0002] The flood season is a specific period of time in a year when extreme precipitation and flood disasters easily occur in rivers, lakes and other water bodies. Most areas in China are controlled by monsoon climate, and the flood season is the most important period of rainfall every year, during which climate disasters are prone to occur, causing huge losses to China's economic construction and social development. For example, in 2021, the rain season in North China started early and ended late, with an average rainfall of 276.4 mm, which was more than 1 times of the average annual rainfall. In the earlier flood season of 2016, the average precipitation in the country was the most in the same period since 1961, and extreme heavy rainfall events occurred in East China, resulting in the largest flood in the Yangtze River Basin since 1998 and the widest and strongest flood in the Haihe River Basin since 1996. In recent years, the climate has deteriorated year by year, and extreme climate conditions have occurred frequently. Heavy rain and typhoons have caused river and tidal levels to rise rapidly, often exceeding the highest water level in history. Once a large amount of river or sea water flows into the urban area, it will cause tremendous economic losses and great social impact.
[0003] In order to avoid the river or sea water flowing into the urban area during the flood season, a flood control wall is generally considered to be set on the edge of the river. The traditional flood control wall mainly focuses on the water conservancy engineering technical functions such as flood control and water blocking, and ignores the landscape design, which has the disadvantages of being not coordinated with the corresponding structures. Moreover, with the improvement of people's living standards, when building the flood control wall, the environment behind the wall will also be considered to integrate safety, landscape, culture, ecology and leisure into one, providing a slow leisure system for people to exercise, walk and relax, and improving the quality of life of urban residents. In order to meet the permeability of the flood control wall, some sections of the bank use glass flood control walls, movable flap flood control walls and mobile steel plate flood control walls with strong landscape. Although these flood control walls have certain landscape effects, they have their own shortcomings. The glass flood control wall has good vision, but no hydrophilic property. The movable flap flood control wall and the mobile steel plate flood control wall are not only inconvenient to disassemble and assemble, but also need a certain space for placement. SUMMARY
[0004] The utility model provides a continuous cross hidden lifting flood control wall in view of the defects of prior art, this flood control wall can be arranged continuously, is installed freely, and in the non flood season, the gate can be sunk to the door warehouse and hides, only the stand column is left on the ground, the stand column can be decorated according to the need, can guarantee the beautiful appearance, and also do not affect the normal passage of this position, in the flood season, it can be quickly lifted to the ground to play the purpose of flood control.
[0005] In order to achieve the above object, the utility model provides a continuous cross hidden type lifting flood control wall, the flood control wall includes at least two columns of continuous arrangement and the lifting door body between two columns, the column is above the ground, and the door library matched with the lifting door body is equipped between the position below the ground of two adjacent columns, the opposite face of two adjacent columns is symmetrically provided with the lifting slide, and the lifting slide extends vertically downward to the door library bottom surface, the lifting mechanism is symmetrically equipped on the upper portion of two columns, the lifting door body is slidably installed between two adjacent columns, and is connected with the corresponding lifting mechanism on each side, and is lifted to two adjacent columns or is lowered to the door library under the action of the lifting mechanism, the lifting mouth of the door library is equipped with the cover plate.
[0006] The utility model more preferably technical scheme, the flood control wall still includes hydraulic control system, the lifting mechanism includes the frame installed in the inside of column and the hydraulic oil jar invertedly installed on the frame, the piston rod top of hydraulic oil jar is connected with the lifting lug of both sides of lifting door body, the hydraulic control system is arranged at one end of flood control wall, and the hydraulic oil jar of each lifting mechanism is controlled through the oil pipe stretch -shrink.
[0007] The utility model more preferably technical scheme, both sides of lifting door body are equipped with the slider matched with lifting slide, and are embedded in the corresponding lifting slide through the slider of both sides.
[0008] The utility model more preferably technical scheme, the width of door library is greater than the width of column, and the adjacent two door libraries are communicated with each other, the lifting mouth width of door library is matched with the width of lifting door body, and the access hole of the door library is provided on the ground.
[0009] The utility model more preferably technical scheme, the hydraulic control system includes hydraulic system pump station, diesel generating set and electric control cabinet, hydraulic system pump station, diesel generating set and electric control cabinet all hide and install in the ground or ground, and the oil pipe groove communicated with door library is excavated in the installation position of hydraulic control system, the oil pipe extends downward to the door library side wall through the oil pipe groove, and extends upward and communicates with the hydraulic oil jar at the position of corresponding column, so as to provide hydraulic oil control for hydraulic oil jar.
[0010] The utility model more preferably technical scheme, the hydraulic oil jar is vertically arranged on the column, the stroke of hydraulic oil jar is greater than or equal to the height of door library, and under the condition that the hydraulic oil jar is fully stretched, the lifting door body is lowered to the door library as a whole, under the condition that the hydraulic oil jar is contracted, the lifting door body is lifted to two adjacent columns.
[0011] The utility model more preferably technical scheme, the lifting lug is arranged at the bottom end of both sides of lifting door body, and the depth of lifting slide is consistent with the width of lifting lug, and the lifting lug is lifted along the lifting slide when the hydraulic oil jar stretches and shrinks.
[0012] The utility model discloses a better technical scheme, two groups of hydraulic cylinders arranged on the same stand are controlled through a set of hydraulic hoist, and all the hydraulic hoists share a set of hydraulic control system.
[0013] The utility model discloses the beneficial effect:
[0014] (1) the utility model discloses can be continuously arranged, also can be arranged individually, and the installation arrangement activity is free, can be designed and arranged according to the on-site demand, and the motor flexibility is high. In non-flood season, the flood control wall can be sunk to hide in the door warehouse, and only the stand is left on the ground, and the stand can be decorated according to the requirement, which can guarantee the appearance and not affect the normal passing of the position; in flood season, the flood control wall can be quickly raised to block water through the hydraulic control device controller, guaranteeing personal and property safety; in non-flood season, the flood control wall is sunk and hidden in the underground door warehouse; the utility model integrates flood control, landscape and passing, which can meet the requirements of city flood control and coordinate with the requirements of city landscape.
[0015] (2) the utility model discloses the lifting control is convenient, and the whole operation process is high in degree of automation, and except when overhauling, many manpower is not needed, and the efficiency is much higher than that of the traditional manual flood control mode.
[0016] (3) the utility model discloses that the anticorrosive measure can be considered in design, and the anticorrosive treatment of the whole flood control wall is strengthened, the wall is used only in flood season every year, and is hidden in the door warehouse in non-flood season, so the wall is not damaged by external factors, and therefore the maintenance cost of the whole set of equipment is not high, and the service life is long.
[0017] The utility model discloses that the whole installation is flexible, convenient to use, can widen the landscape vision, can resist flood invasion when necessary, and does not affect normal passing when not being used. ACCURACY OF DRAWINGS
[0018] Figure 1 It is the structural schematic diagram of the utility model;
[0019] Figure 2 It is the partial enlarged schematic diagram of the utility model;
[0020] Figure 3 It is the side sectional view of the utility model;
[0021] Figure 4 It is the schematic diagram of door body and hydraulic cylinder connection;
[0022] Figure 5 It is the axonometric schematic diagram of the utility model;
[0023] Figure 6 It is the plan view of the flood control wall in the embodiment.
[0024] In the diagram: 1—Column, 2—Lifting door body, 200—Lifting lug, 3—Door compartment, 300—Inspection port, 4—Lifting slide, 5—Lifting mechanism, 500—Frame, 501—Hydraulic cylinder, 6—Cover plate, 7—Hydraulic control system, 700—Oil pipe, 701—Diesel generator set, 702—Electrical control cabinet, 703—Hydraulic system pump station, 8—Oil pipe trench, 9—Water stop component. Detailed Implementation
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments. Figures 1 to 6 All accompanying drawings are simplified versions of embodiments and are intended solely for the purpose of clearly and concisely illustrating the embodiments of this utility model. The technical solutions shown in the drawings below are specific solutions of embodiments of this utility model and are not intended to limit the scope of the claimed utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
[0026] In the description of this utility model, it should be understood that the terms "upper," "lower," "inner," "outer," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only used for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0027] The embodiment provides a continuous, span-mounted, concealed, rising flood control wall, such as... Figures 1 to 6As shown, the flood control wall comprises at least two columns 1 arranged continuously and a lifting door body 2 between the two columns 1, the column 1 is above the ground, and a door storage 3 matched with the lifting door body 2 is arranged below the ground between the two adjacent columns 1, the width of the door storage 3 is greater than the width of the column 1, and the adjacent two door storages 3 are communicated with each other, the position below the column 1 is solid to avoid insufficient support; the adjacent two door storages 3 are communicated with each other through the gap on both sides of the column 1, the width of the gap can be passed by a single person, the lifting opening width of the door storage 3 is matched with the width of the lifting door body 2, which can limit the lifting door body 2 to lift along the lifting opening; the ground is provided with an inspection opening 300 leading to the door storage 3, the inspection opening 300 can be provided with two, which is convenient for the construction personnel to enter the door storage 3 to inspect each component. The lifting slide 4 is symmetrically arranged on the opposite side of the adjacent two columns 1, and extends vertically downward to the bottom surface of the door storage 3, the lifting mechanism 5 is symmetrically arranged on the upper part of the two columns 1, the two sides of the lifting door body 2 are provided with the sliding block matched with the lifting slide 4, and the sliding block is embedded into the corresponding lifting slide 4 through the sliding block on both sides, and each side is connected with the corresponding lifting mechanism 5, and rises to between the adjacent two columns 1 or falls into the door storage 3 under the action of the lifting mechanism 5; the cover plate 6 is arranged on the lifting opening of the door storage 3, which can hide the lifting opening of the door storage 3 by using the cover plate 6 after the lifting door body 2 completely sinks into the door storage 3, so as to ensure the safety of pedestrian passing. The water stop 9 is arranged on the front and rear plates of the lifting door body 2, and the water stop 9 realizes the water sealing function.
[0028] A continuous hidden lifting flood control wall in an embodiment, as shown in Figures 1 to 6As shown, the flood control wall further comprises a hydraulic control system 7, the lifting mechanism 5 comprises a rack 500 installed inside the column 1 and a hydraulic cylinder 501 installed upside down on the rack 500, and the piston rod top end of the hydraulic cylinder 501 is connected with the lifting lugs 200 on both sides of the lifting door body 2; the hydraulic control system 7 is arranged at one end of the flood control wall and controls the extension and retraction of the hydraulic cylinder 501 of each lifting mechanism 5 through the oil pipe 700. The hydraulic control system 7 comprises a hydraulic system pump station 703, a diesel generating set 701 and an electric control cabinet 702, and the hydraulic system pump station 703, the diesel generating set 701 and the electric control cabinet 702 are all hiddenly installed underground or on the ground; and an oil pipe trench 8 communicating with the door warehouse 3 is excavated at the installation position of the hydraulic control system 7, the oil pipe 700 extends downward to the side wall of the door warehouse 3 through the oil pipe trench 8 and extends upward to communicate with the hydraulic cylinder 501 at the position corresponding to the column to provide hydraulic oil control for the hydraulic cylinder 501. The stroke of the hydraulic cylinder 501 is greater than or equal to the height of the door warehouse 3, and in the fully extended state of the hydraulic cylinder 501, the lifting door body 2 is lowered into the door warehouse 3 as a whole; in the retracted state of the hydraulic cylinder 501, the lifting door body 1 is lifted between two adjacent columns. The lifting lugs 200 are arranged at the bottom ends on both sides of the lifting door body 2, and the depth of the lifting slide 4 is consistent with the width of the lifting lug 200, so that the lifting lug 200 is lifted along the lifting slide 4 when the hydraulic cylinder 501 extends and retracts. Two groups of hydraulic cylinders 501 arranged on the same column 1 are controlled by one set of hydraulic hoist; all the hydraulic hoists share one set of hydraulic control system 7.
[0029] The utility model is further described below in combination with a specific implementation case. The embodiment is designed for a flood control passage in a certain riverfront area. The flood control passage is as shown in the figure Figure 6 Three groups of hidden lifting door bodies are arranged in series, and the three groups of hidden lifting door bodies constitute a complete flood control wall, and the middle group of water-retaining working sluices are arranged in central line symmetry with the Old Wuhu Customs Tower. The hidden flood control wall is mainly used for preventing flood and retaining water on the side of the Yangtze River during flood season. During non-flood season, the lifting door bodies can be lowered and hidden in the door warehouses 3, and the door warehouses 3 are closed by the cover plates 6, so as not to affect the pedestrian passage and landscape effect of the Old Wuhu Customs Tower in the riverfront park. The specific structure of the flood control wall comprises four columns 1, three groups of lifting door bodies 2 and corresponding opening and closing devices, and three door warehouses 3. The column 1 is a steel structure column, and the three door warehouses 3 are connected.
[0030] The three lifting door bodies 2 of the newly-built flood control wall passage lock are all hidden lifting type plane sliding steel lock gates. The center line of the newly-built flood control passage lock gate is as close as possible to the original flood control wall axis. The three-span flood control wall water retaining working lock gates are all plane sliding lock gates, and the door body widths are 13.5 m, 13.5 m and 15.522 m respectively. The lock top elevation of the flood control wall passage lock is 11.9 m. The top of the water retaining working lock gate is the same height as the existing flood control wall. The top elevation of the lifting door body 3 is 14.4 m when retaining water. The height of the lifting door body exposed above the lock surface is about 2.5 m. The lock library bottom elevation is 8.3 m. The maximum design water level of the lifting door body is the design flood level 13.44 m of the old Wuhu Customs Section flood control wall. Therefore, the maximum design water head of the lifting door body is about 1.54 m. The lifting door body 3 is a main beam type welded beam system structure, and three main beams are arranged. The main beam and the edge column are the same height. In order to reduce the operation, maintenance and repair workload of the lifting door body in the later period, the material of the lifting door body 3 is selected to be 022Cr22Ni5Mo3N stainless steel. The maximum transportation size and weight of the lifting door body is 16.5 m x 3.0 m x 0.8 m-25 t.
[0031] Each lifting door body 2 of each passage of the flood control wall in the embodiment adopts 1 set of 2 x 250 kN hydraulic hoist for operation, and there are 3 sets of hydraulic hoists, 6 hydraulic hoist oil cylinders, 1 set of hydraulic system and electric power driving and control equipment. The hydraulic hoist is composed of an oil cylinder assembly, a hydraulic system pump station assembly, and a supporting rack, a stroke detection and indication device, a stroke limiting device, a cylinder safety pressure valve block, a hydraulic pipeline system, a buried part, an electric power driving and control equipment and the like. The 6 hydraulic hoist oil cylinders are arranged in the corresponding door groove of the lock pier steel structure column 1. The oil cylinder is arranged in a vertical cylinder type. The tail of the cylinder body is fixed on the top rack of the steel structure column through a connecting flange. The installation elevation of the tail of the cylinder body is about 15.7 m. The piston rod of the hydraulic hoist is directly connected with the bottom lifting lug of the lifting door body 2 through a ball joint. The stroke of the piston rod of the hoist oil cylinder is about 3.2 m. In order to ensure the reliable operation of the lifting door body in the flood season, the hydraulic system pump station adopts double circuit power supply, and a diesel generator is provided as a standby power supply. The 3 sets of hydraulic hoists share 1 set of hydraulic system pump station. The hydraulic system pump station, the electric power driving and control equipment are arranged in the hoist room outside the back water side of the edge lock pier. The hydraulic system pipeline and the control line are led from the hoist room to the hoist oil cylinder in the door groove of the steel column through the door library side wall. The 3 lifting door bodies 2 are powered by the hydraulic system pump station, and can be operated singly or as a whole. The double cylinder synchronization error of the single lifting door body is not more than 10 mm. The gate opening and closing speed is 0.5 m / min. The double cylinder synchronous operation mode: on the one hand, a double proportional valve synchronous circuit is adopted, and on the other hand, a double cylinder synchronous circuit composed of independent simple valve components is provided to drive the double oil cylinders to synchronously open and close the gate.
[0032] The hydraulic pump station is provided with two sets of manual constant pressure variable oil pump-motor units, which work simultaneously under normal conditions; when one set of oil pump-motor unit is faulty, the other set can also work alone (by manually adjusting the speed by one half); under maintenance conditions, the two sets of manual constant pressure variable oil pump-motor units can work simultaneously or one set of manual constant pressure variable oil pump-motor unit works (by manually adjusting the speed, which are mutually reserved). The hydraulic system is provided with an emergency circuit, when the electro-hydraulic proportional valve control fails, the electro-hydraulic proportional valve control circuit is closed, and the emergency manual single-step control circuit can be used to synchronously open and close the gate of the double cylinders.
[0033] The steel structure column is used as a door slot embedded part and bears the water pressure when the lifting door body 2 blocks the water. The top of the column 1 is arranged with a hydraulic hoist cylinder frame, and the top of the middle steel structure column is arranged with a lamp projection device of the old Wuhu customs in addition to the hydraulic hoist cylinder support. In order to reduce the structure size of the steel structure column, the column is made of an integrated steel structure. The cross-sectional size of the steel structure column is about 1.5m*1.5m (before installation of the outer decoration), the steel structure column is a box-shaped welded structure, the door slot embedded parts are arranged on both sides of the column, and the hydraulic system pipeline and the electric control circuit are arranged in the cavity of the column. The main materials of the column are Q355B steel plate and 022Cr22Ni5Mo3N stainless steel. The steel structure column is integrally manufactured and installed, and is embedded in one stage. The column can be installed with decorations according to the needs, so that it is beautiful and clean and does not affect the urban landscape.
[0034] In the embodiment, the three lifting door bodies 2 of the flood control wall are hidden in the door library 3 in normal times, and when the flood season comes and the flood of the Yangtze River exceeds the warning water level, the cover plate 3 covering the lifting opening of the door library 3 is first lifted, the generator set and the electric control cabinet are controlled, the hydraulic hoist is controlled through the oil pipe, the hydraulic oil cylinder 701 is retracted, the lifting door body 2 is lifted during the retraction of the hydraulic oil cylinder 701, the lifting door body 2 is locked through the locking device arranged on the top of the side column of the lifting door body 2 and the hoist frame, the flood is blocked outside the flood control wall, and the flood is intercepted outside the flood control wall. When the flood recedes, the hydraulic oil cylinder 701 is controlled to extend, the lifting door body 2 is lowered into the door library 3, and the lifting door body 2 is completely lowered until the lifting door body 2 is completely lowered, and then the cover plate 6 is used to cover the lifting opening of the door library 3 to hide it, so as to ensure the safety of pedestrian traffic. The column on the ground can be installed with decorations according to the needs, so that it is beautiful and clean and does not affect the urban landscape.
[0035] The above is only one embodiment of the present application, which is described in detail, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are all within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A continuous split-span hidden lift floodwall characterized by: The flood control wall comprises at least two columns (1) arranged in series and a lifting door body (2) between the two columns (1), the column (1) is above the ground, a door storage (3) matched with the lifting door body (2) is arranged between the two adjacent columns (1) below the ground, a lifting slide (4) is symmetrically arranged on the opposite side of the two adjacent columns (1), and the lifting slide (4) vertically extends downward to the bottom surface of the door storage (3); a lifting mechanism (5) is symmetrically arranged on the upper part of the two columns (1), the lifting door body (2) is slidingly arranged between the two adjacent columns (1) on both sides, and each side is connected with the corresponding lifting mechanism (5) and is lifted to between the two adjacent columns (1) or is lowered into the door storage (3) under the action of the lifting mechanism (5); the lifting opening of the door storage (3) is provided with a cover plate (6).
2. A continuous split hidden floodwall lift according to claim 1, wherein: The flood control wall further comprises a hydraulic control system (7), the lifting mechanism (5) comprises a rack (500) arranged in the column (1) and a hydraulic oil cylinder (501) arranged in the rack (500) in an inverted manner, the top end of the piston rod of the hydraulic oil cylinder (501) is connected with the lifting lugs (200) on both sides of the lifting door body (2); the hydraulic control system (7) is arranged at one end of the flood control wall, and the hydraulic oil cylinder (501) of each lifting mechanism (5) is controlled to extend or retract through the oil pipe (700).
3. A continuous split hidden floodwall lift according to claim 1 or 2, wherein: The lifting door body (2) is provided with a sliding block matched with the lifting slide (4) on both sides, and the sliding block is embedded in the corresponding lifting slide (4) through the sliding block on both sides, and a water stop (9) is arranged on the front and rear surfaces of the lifting door body (2).
4. The continuous split hidden floodwall lift according to claim 1 or 2, wherein The width of the door storage (3) is greater than the width of the column (1), and the two adjacent door storages (3) are communicated with each other, the lifting opening width of the door storage (3) is matched with the width of the lifting door body (2), and the maintenance opening (300) leading to the door storage (3) is arranged on the ground.
5. A continuous split hidden floodwall lift according to claim 2, wherein: The hydraulic control system (7) comprises a hydraulic system pump station (703), a diesel generator set (701) and an electric control cabinet (702), the hydraulic system pump station (703), the diesel generator set (701) and the electric control cabinet (702) are all hiddenly arranged underground or on the ground, an oil pipe groove (8) communicated with the door storage (3) is arranged at the installation position of the hydraulic control system (7), the oil pipe (700) extends downward to the side wall of the door storage (3) through the oil pipe groove (8) and extends upward to be communicated with the hydraulic oil cylinder (501) at the position of the corresponding column to provide hydraulic oil control for the hydraulic oil cylinder (501).
6. A continuous split hidden floodwall lift according to claim 2, wherein: The hydraulic oil cylinder (501) is vertically arranged on the column (1), the stroke of the hydraulic oil cylinder (501) is greater than or equal to the height of the door storage (3), and in the fully extended state of the hydraulic oil cylinder (501), the lifting door body (2) is lowered into the door storage (3) as a whole; in the retracted state of the hydraulic oil cylinder (501), the lifting door body (2) is lifted between the two adjacent columns.
7. A continuous split hidden floodwall lift according to claim 2, wherein: The lifting lug (200) is arranged at the bottom end of the lifting door body (2) on both sides, and the depth of the lifting slide (4) is consistent with the width of the lifting lug (200), so that the lifting lug (200) is lifted along the lifting slide (4) when the hydraulic cylinder (501) is extended or retracted.
8. A continuous split hidden floodwall lift according to claim 2, wherein: The two groups of hydraulic cylinders (501) arranged on the same stand column (1) are controlled by a set of hydraulic opening and closing machines; all the hydraulic opening and closing machines share a set of hydraulic control systems (7).