CN209856133U - Hydraulic system of side stand machine and side stand machine - Google Patents
Hydraulic system of side stand machine and side stand machine Download PDFInfo
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- CN209856133U CN209856133U CN201920625589.2U CN201920625589U CN209856133U CN 209856133 U CN209856133 U CN 209856133U CN 201920625589 U CN201920625589 U CN 201920625589U CN 209856133 U CN209856133 U CN 209856133U
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Abstract
The utility model provides a hydraulic system of side stand machine and side stand machine, including pressure source, oil tank, electromagnetic directional valve, pressure counterbalance valve, hydraulic cylinder, electromagnetic switch valve and one-way sequence valve, wherein, hydraulic cylinder includes pole cavity and no pole cavity, and the electromagnetic directional valve has first working oil port, second working oil port, pressure port and oil return opening; the pressure source is connected to the pressure port to form an oil supply flow path, the oil return port is connected to the oil tank to form an oil return flow path, and the first working oil port is sequentially connected with the pressure counterbalance valve and the rodless cavity to form a first working flow path; the second working oil port is sequentially connected with the electromagnetic switch valve, the one-way sequence valve and the rod cavity to form a second working flow path, wherein the electromagnetic switch valve is connected with the one-way sequence valve in parallel. The thrust required by the hydraulic oil cylinder can be prevented from changing from a positive value to a negative value at the moment, so that the one-way sequence valve can prop against the side stand machine, and the damage of components loaded on the side stand machine due to severe shaking is prevented.
Description
Technical Field
The utility model relates to a construction equipment field, in particular to hydraulic system and side of machine of standing on one's side.
Background
The side erecting machine is a common device on a PC member (precast concrete) production line, and is used for overturning a mold table loaded with a PC member to a certain angle and completing the demolding and hoisting operation of the member under the cooperative work of a traveling crane.
In a common side stand machine, a component is placed on a die table of a side stand arm, when the side stand arm is in an initial position (the side stand arm is horizontal), the moment required by the die table and the component is the largest, the force arm of the side stand oil cylinder is shorter, and the thrust required by the side stand oil cylinder is the largest at the moment; along with the lifting of the side vertical arm, the thrust required by the side vertical oil cylinder is gradually reduced, namely in the lifting process of the side vertical arm, the thrust required by the side vertical oil cylinder still keeps a positive value; however, at the moment when the thrust required by the side stand oil cylinder is changed from a positive value to a negative value, the side stand arm has a tendency of automatic overturning under the action of the gravity of the equipment, and although most of hydraulic oil can be locked in a hydraulic system, the side stand arm can shake violently due to the compressibility of the hydraulic oil and the like, so that the components are damaged.
Disclosure of Invention
The utility model aims at providing a hydraulic system and the side of machine of standing on one's side have solved the thrust of the side hydro-cylinder in the current machine of standing on one's side and become the moment of negative value by the positive value, and the side arm of standing can take place violent rocking, leads to the problem that the component damaged.
In order to achieve the above object, the present invention provides a hydraulic system of a side stand machine, the hydraulic system of the side stand machine includes a pressure source, an oil tank, an electromagnetic directional valve, at least two pressure counter valves, at least two hydraulic cylinders, at least one electromagnetic switch valve and at least one-way sequence valve, wherein each hydraulic cylinder includes a rod cavity and a rodless cavity, the electromagnetic directional valve has a first working oil port, a second working oil port, a pressure port and an oil return port;
the pressure source is connected to a pressure port of the electromagnetic reversing valve to form an oil supply flow path, and the oil return port is connected to the oil tank to form an oil return flow path;
the first working oil port is sequentially connected with each pressure counterbalance valve and each rodless cavity to form a first working flow path;
the second working oil port is sequentially connected with the electromagnetic switch valve, the one-way sequence valve and the rod cavity to form a second working flow path, wherein the electromagnetic switch valve is connected with the one-way sequence valve in parallel.
Optionally, the one-way sequence valve includes a first one-way valve and a sequence valve, the first one-way valve and the sequence valve are connected in parallel, one end of the first one-way valve and one end of the sequence valve are connected to the rod cavity, and the other end of the first one-way valve and one end of the sequence valve are connected to the second working oil port.
Optionally, the one-way sequence valve further comprises a first throttle valve connected in series to the sequence valve, and the first throttle valve is connected in parallel with the first one-way valve.
Optionally, the hydraulic system of the side stand machine further comprises a cooler connected in series to the first working flow path or the second working flow path.
Optionally, the pressure balancing valve is a balanced valve or a hydraulic lock.
Optionally, the hydraulic system of the side stand machine further includes a first one-way throttle valve and a second one-way throttle valve, the first one-way throttle valve is connected in series between the first working oil port and the pressure counterbalance valve, the second one-way throttle valve is connected in series between the second working oil port and the electromagnetic switch valve, or the second one-way throttle valve is connected in series between the second working oil port and the one-way sequence valve.
Optionally, the first check throttling valve includes a second check valve and a second throttling valve connected in parallel, and a conducting direction of the second check valve is a direction from the first working port to the pressure balancing valve; and/or
The second one-way throttle valve comprises a third one-way valve and a third throttle valve which are connected in parallel, and the conducting direction of the third one-way valve is the direction from the second working oil port to the electromagnetic switch valve or the one-way sequence valve.
Optionally, the hydraulic system of the side stand machine further includes a synchronizing element, the synchronizing element is connected in series between the first working oil port and the pressure counterbalance valve, and the synchronizing element is connected in series with the first one-way throttle valve.
In order to achieve the purpose, the utility model also provides a side stand machine, which comprises a rotating part and a hydraulic system of the side stand machine;
at least two hydraulic oil cylinders of a hydraulic system of the side erecting machine are connected with the rotating part so as to drive the rotating part to rotate.
Optionally, the side erecting machine further comprises a supporting piece, a hinge point is arranged on the supporting piece, and the rotating piece is rotatably connected to the hinge point;
one end of the hydraulic oil cylinder is rotatably connected to the supporting piece, the other end of the hydraulic oil cylinder is connected to the rotating piece, and the hydraulic oil cylinder drives the rotating piece to rotate around the hinge point.
The embodiment of the utility model provides an in, including pressure source, oil tank, solenoid directional valve, at least two pressure counterbalance valves, at least two hydraulic cylinder, at least one electromagnetic switch valve and at least one-way sequence valve, wherein, each hydraulic cylinder includes pole cavity and no pole cavity, and the solenoid directional valve has first working oil port, second working oil port, pressure port and oil return opening; the pressure source is connected to a pressure port of the electromagnetic directional valve to form an oil supply flow path, an oil return port is connected to the oil tank to form an oil return flow path, and a first working oil port is sequentially connected with each pressure counterbalance valve and each rodless cavity to form a first working flow path; the second working oil port is sequentially connected with the electromagnetic switch valve, the one-way sequence valve and the rod cavity to form a second working flow path, wherein the electromagnetic switch valve is connected with the one-way sequence valve in parallel. The technical scheme that this embodiment provided promptly can be through being connected solenoid switch valve and one-way sequence valve in parallel to prevent that the required thrust of hydraulic cylinder from becoming the moment of negative value by the positive value, make one-way sequence valve can withstand the side and stand the machine, prevent that the side from standing the machine and leading to the component of side loading on the machine to damage because of violent rocking.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments or examples of the present invention, the drawings used in the embodiments or examples will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating connection of components of a hydraulic system of a side stand machine according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating connection of components of a hydraulic system of a side stand machine according to another embodiment of the present invention;
fig. 3 is a schematic diagram illustrating connection of components of a hydraulic system of a side stand machine according to another embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the one-way sequence valve of FIG. 1 or FIG. 2;
FIG. 5 is an enlarged schematic view of the one-way sequence valve of FIG. 3;
fig. 6 is a schematic structural diagram of a state of the side stand machine according to the embodiment of the present invention;
fig. 7 is a schematic structural diagram of another state of the side stand machine according to the embodiment of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
As shown in FIGS. 1-5, the embodiment of the utility model provides a hydraulic system of a side stand machine.
In one embodiment, a hydraulic system of the side stand machine provides hydraulic oil for the side stand machine, so that the side stand machine can drive a die table loaded with a component thereon to overturn to a preset angle under the action of the hydraulic oil, and the demoulding and hoisting operation of the component is completed under the cooperative work of a travelling crane. Optionally, the preset angle is 85 ° to 90 °.
Specifically, as shown in fig. 1 to 3, the hydraulic system of the side stand machine includes a pressure source 10, an oil tank 20, an electromagnetic directional valve 30, at least two pressure counter-balance valves 40, at least two hydraulic cylinders 50, at least one electromagnetic switch valve 60, and at least one-way sequence valve 70, wherein each hydraulic cylinder 50 includes a rod cavity 51 and a rodless cavity 52, and the electromagnetic directional valve 30 has a first working oil port a, a second working oil port B, a pressure port P, and an oil return port T.
Further, the pressure port P of the pressure source 10 connected to the electromagnetic directional valve 30 forms an oil supply flow path, the oil return port T is connected to the oil tank 20 to form an oil return flow path, and the oil tank 20 is used for storing hydraulic oil and supplying the hydraulic oil to the hydraulic system of the side stand machine, so as to operate the hydraulic oil cylinder 50 in the hydraulic system. When the oil tank 20 supplies oil to the hydraulic system, the pressure source 10 sucks hydraulic oil from the oil tank 20 and supplies the hydraulic oil to the pressure port P of the electromagnetic directional valve 30, that is, the oil tank 20 supplies hydraulic oil to the pressure source 10 as an oil suction flow path of the hydraulic system, the pressure port P of the pressure source 10 supplies hydraulic oil to the electromagnetic directional valve 30 as an oil supply flow path, and the oil suction flow path and the oil supply flow path are combined to supply hydraulic oil for normal operation of the hydraulic cylinder 50. Because the hydraulic cylinder 50 comprises the rod cavity 51 and the rodless cavity 52, that is, when hydraulic oil flows through the rodless cavity 52 and the rod cavity 51 of the hydraulic cylinder 50, a differential circuit is formed between the rodless cavity 52 and the rod cavity 51, so that a piston rod in the rod cavity 51 is driven to extend or retract.
Alternatively, the pressure source 10 may be a pressure pump, an oil suction pump, etc., without limitation.
Further, the number of the hydraulic oil cylinders 50 is at least two, and the two hydraulic oil cylinders 50 both provide hydraulic oil required for the operation thereof through the oil supply flow path, so as to ensure the normal operation of the two hydraulic oil cylinders 50. Of course, in other embodiments, hydraulic rams 50 may be provided in other quantities, such as: three, four and the like to ensure that the hydraulic oil cylinder 50 can have enough power to drive the die table loaded with the component on the side stand machine to overturn to a preset angle, so that the die table can complete the demoulding and hoisting operation of the component under the cooperative work of the travelling crane.
Further, a first working oil port a is sequentially connected with each pressure counterbalance valve 40 and each rodless cavity 52 to form a first working flow path; the second working oil port B is connected to the electromagnetic switching valve 60, the one-way sequence valve 70 and the rod cavity 51 in sequence to form a second working flow path, wherein the electromagnetic switching valve 60 is connected in parallel with the one-way sequence valve 70.
That is, when the hydraulic oil is supplied to the electromagnetic directional valve 30 through the oil supply flow path, the hydraulic oil on the electromagnetic directional valve 30 is supplied to the hydraulic cylinder 50 through the first working oil port a and the second working oil port. Specifically, hydraulic oil flows into the rodless cavity 52 through the first working oil port a of the electromagnetic directional valve 30 and the pressure counterbalance valve 40 to form a first working flow path, wherein when the number of the hydraulic oil cylinders 50 is two, the hydraulic oil is divided into two oil paths after coming out of the first working oil port a of the electromagnetic directional valve 30 and flows into each rodless cavity 52 after flowing through each pressure counterbalance valve 40 to form the first working flow path, or in other embodiments, when the number of the hydraulic oil cylinders 50 is N (N is greater than or equal to 1, and N is a positive integer), the hydraulic oil is divided into N oil paths after coming out of the first working oil port a of the electromagnetic directional valve 30 and flows into each rodless cavity 52 after flowing through each pressure counterbalance valve 40 to form the first working flow path.
Specifically, the hydraulic oil passes through the second working oil port B of the electromagnetic directional valve 30, then flows through the electromagnetic switch valve 60 or the one-way sequence valve 70, and then flows into the rod chamber 51 to form a second working flow path, wherein, when the number of the hydraulic oil cylinders 50 is two, and the number of the electromagnetic switch valves 60 and the one-way sequence valves 70 is two, the hydraulic oil is divided into two oil paths after coming out from the second working oil port B of the electromagnetic directional valve 30, and flows into the rod chamber 51 after passing through each of the solenoid switching valves 60 or each of the one-way sequence valves 70, respectively, to form a second operation flow path, or, in other embodiments, when the number of hydraulic cylinders 50, electromagnetic switch valves 60 and one-way sequence valves 70 is N (N ≧ 1, N is a positive integer), the hydraulic oil is divided into N oil paths after coming out from the second working oil port B of the electromagnetic directional valve 30, and flows into the rod chamber 51 after passing through each of the solenoid switching valves 60 or each of the one-way sequence valves 70, respectively, to form a second operation flow path.
Further, the electromagnetic opening/closing valve 60 is connected in parallel with the one-way sequence valve 70. That is, in the present embodiment, the second hydraulic fluid passage may flow the hydraulic fluid of the second hydraulic fluid port B into the rod chamber 51 through the electromagnetic opening/closing valve 60 and the non-return priority valve 70, so as to extend or retract the piston rod in the rod chamber 51.
Specifically, when a piston rod in the rod cavity 51 extends, that is, hydraulic oil in the rod cavity 51 overflows, and the electromagnetic switch valve 60 is opened, the pressure borne by the one-way sequence valve 70 is small, that is, a spring arranged on the one-way sequence valve 70 cannot be sprung open, so that the spring continues to block the one-way sequence valve 70, at this time, hydraulic oil in the rod cavity 51 overflows, the overflowed hydraulic oil flows back to the second working oil port B through the electromagnetic switch valve 60, that is, flows back to the electromagnetic directional valve 30, and at this time, hydraulic oil in the electromagnetic directional valve 30 flows out from the oil return port T and flows back to the oil tank 30; when the piston rod in the rod cavity 51 extends and the electromagnetic switch valve 60 is closed, the pressure borne by the one-way sequence valve 70 is large, so that the spring arranged on the one-way sequence valve 70 is sprung open to open the one-way sequence valve 70, at this time, the hydraulic oil in the rod cavity 51 overflows, the overflowed hydraulic oil flows back to the second working oil port B through the one-way sequence valve 70, namely flows back to the electromagnetic directional valve 30, and at this time, the hydraulic oil in the electromagnetic directional valve 30 flows out from the oil return port T and flows back to the oil tank 30.
Specifically, when the piston rod in the rod cavity 51 contracts, that is, the hydraulic oil in the rodless cavity 52 overflows, the overflowing hydraulic oil flows back to the first working oil port a through the pressure balance valve 40, that is, flows back to the electromagnetic directional valve 30, and at this time, the hydraulic oil in the electromagnetic directional valve 30 flows out from the oil return port T and flows back to the oil tank 30.
Further, when the hydraulic system works, the hydraulic oil in the oil tank 20 flows into the rodless cavity 51 or the rod cavity 52 of the hydraulic oil cylinder 50 after sequentially flowing into the electromagnetic directional valve 30 through the pressure source 10; the hydraulic oil in the rodless cavity 51 or the rod cavity 52 flows back to the oil tank 10 through the electromagnetic directional valve 30, the hydraulic oil flows between the rodless cavity 51 or the rod cavity 52 of the hydraulic oil cylinder 50 to generate pressure difference, so that the piston rod of the hydraulic oil cylinder 50 is driven to reciprocate, the piston rod drives a die table connected with the piston rod and prevents a component on the die table from overturning to a preset angle, and the demoulding and lifting operation of the component is completed under the cooperative work of travelling cranes.
Optionally, the initial position of the member is a horizontal position, that is, the position of the member is 0 °, and when the member is lifted, the structure of the lifting member (for example, the arm support, etc.) is that the arm support has a maximum movement angle, which is 85 ° to 90 °, where in this embodiment, the maximum movement angle is 85 °.
Further, the load (component) on the boom has a critical angle during the lifting process, which is a value that changes within a certain range according to different working conditions, such as about 75 ° when the boom is fully loaded and about 84 ° when the boom is unloaded.
Further, the boom has a lifting process and a lowering process, and before the boom is switched from the lifting process to the lowering process, the boom has a switching angle, which is required to be smaller than a minimum critical angle, for example, the switching angle may be set to 73 °, that is, before the switching angle (73 °), the electromagnetic switch valve 60 is turned on, and the hydraulic oil in the rod cavity 51 flows back to the oil tank 20 through the electromagnetic switch valve 60.
After the angle (73 °) is switched, the hydraulic oil in the rod cavity 51 flows back to the oil tank 20 through the one-way sequence valve 70, and at this time, a high pressure is always maintained in the rod cavity 51, so that when the boom moves to a critical angle (for example, the critical angle of a certain working condition is 80 °), the boom does not shake due to the high pressure in the rod cavity 51.
Specifically, when the electromagnetic switch valve 60 is closed, the piston rod in the rod cavity 51 extends, and the pressure borne by the one-way sequence valve 70 is relatively high, so that the spring arranged on the one-way sequence valve 70 is sprung open, so that the one-way sequence valve 70 is opened, at this time, the hydraulic oil in the rod cavity 51 overflows, the overflowed hydraulic oil flows back to the second working oil port B through the one-way sequence valve 70, i.e., flows back to the electromagnetic directional valve 30, and at this time, the hydraulic oil in the electromagnetic directional valve 30 flows out from the oil return port T and flows back to the oil tank 30.
The embodiment of the present invention includes a pressure source 10, an oil tank 20, an electromagnetic directional valve 30, at least two pressure counter valves 40, at least two hydraulic cylinders 50, at least one electromagnetic switch valve 60, and at least one-way sequence valve 70, wherein each hydraulic cylinder 50 includes a rod cavity 51 and a rodless cavity 52, and the electromagnetic directional valve 30 has a first working oil port a, a second working oil port B, a pressure port P, and an oil return port T; the pressure source 10 is connected to a pressure port P of the electromagnetic directional valve 30 to form an oil supply flow path, the oil return port T is connected to the oil tank 20 to form an oil return flow path, and the first working oil port a is sequentially connected to each pressure counterbalance valve 40 and each rodless cavity 52 to form a first working flow path; the second working oil port B is connected to the electromagnetic switching valve 60, the one-way sequence valve 70 and the rod cavity 51 in sequence to form a second working flow path, wherein the electromagnetic switching valve 60 is connected in parallel with the one-way sequence valve 70. That is, the technical scheme provided by this embodiment can be through being connected solenoid switch valve 60 and check sequence valve 70 in parallel to prevent the required thrust of hydraulic cylinder from becoming the moment of negative value by the positive value, make check sequence valve 70 can withstand the side stand machine, prevent that the side stand machine from leading to the component damage of loading on the side stand machine because of violent rocking.
Further, as shown in fig. 4 and 5, the check sequence valve 70 includes a first check valve 71 and a sequence valve 72, the first check valve 71 and the sequence valve 72 are connected in parallel, and one end of the first check valve 71 and one end of the sequence valve 72 are connected to the rod chamber 51, and the other end thereof is connected to the second working port B.
Specifically, the first check valve 71 and the sequence valve 72 are connected in parallel so that the operations between the first check valve 71 and the sequence valve 72 do not affect each other. The first check valve 71 has a one-way communication, and hydraulic oil can flow from the c-end of the first check valve 71 to the d-end of the first check valve 71, but when hydraulic oil can enter from the d-end of the first check valve 71, it does not flow out from the c-end of the first check valve 71. That is, in the second working flow path, the hydraulic oil of the second working port B flows from the electromagnetic opening/closing valve 60 and/or the first check valve 71 into the rod chamber 51, and the hydraulic oil does not flow from the sequence valve 72 into the rod chamber 51.
Further, the rod cavity 51 has a minimum safe pressure, i.e., the minimum safe pressure of the rod cavity 51 is set to P1, and the specific formula is as follows:
P1＝F/(S*n)；
wherein, F is the maximum load of the cavity 51 with the rod, and the maximum load is determined by the member supported by the hydraulic oil cylinder 50, the gravity of the die table and the side erecting machine, the moment when the side erecting machine is driven to rotate and the moment arm of the hydraulic oil cylinder 50; s is the area of the rod cavity 51: n is the number of hydraulic rams 50.
The sequence valve 72 is provided with a spring 73, the spring 73 has the maximum bearing pressure, the maximum bearing pressure of the spring 73 is the opening pressure of the sequence valve 72, namely when the spring 73 reaches the maximum bearing pressure, the spring 73 is bounced off, and the sequence valve 72 is opened; when the pressure born by the spring 73 does not reach the maximum bearing pressure, the spring blocks the sequence valve 72, so that the pressure of the hydraulic oil cylinder 50 is always greater than or equal to the opening pressure of the sequence valve 72, severe shaking is avoided, and danger is prevented.
Further, the check sequence valve 70 further includes a first throttle valve 74, the first throttle valve 74 is connected in series to the sequence valve 72, and the first throttle valve 74 is connected in parallel to the first check valve 71 to control the flow rate of the hydraulic oil from the sequence valve 72, so as to prevent the flow rate of the hydraulic oil in the hydraulic system from being too fast.
In one embodiment, the hydraulic system of the side stand machine further includes a cooler (not shown) connected in series to the return oil flow path. The hydraulic oil flows back and forth in the loop, the temperature of the hydraulic oil is increased due to friction in the hydraulic oil cylinder 50 and the like, the high-temperature hydraulic oil easily softens an oil pipeline, damages a device contacted with a hydraulic system and reduces the working performance of the side stand machine. The cooler is connected in series in the oil return flow path, so that the temperature of the hydraulic oil can be reduced, and the softening of an oil conveying pipeline and the damage to devices in contact with a hydraulic system are avoided.
Further, the pressure balance valve 40 is a hydraulic lock, and of course, in other embodiments, the oil inlet end e of the pressure balance valve 40 is connected to the rod cavity 51, and the oil outlet end f of the pressure balance valve 40 is connected to the rodless cavity 52, so that the hydraulic oil in the rod cavity 51 flows to the rodless cavity 52, that is, a circulation oil path is formed between the oil inlet end e and the oil outlet end f of the pressure balance valve 40, the rodless cavity 52, and the rod cavity 51, so that the hydraulic oil cylinder 50 operates continuously. The oil inlet end e of the pressure counterbalance valve 40 is one end connected with the oil outlet a of the electromagnetic directional valve 30, the oil outlet end f of the pressure counterbalance valve 40 is one end connected with the oil inlet b of the electromagnetic directional valve 30, namely, the oil inlet end e of the pressure counterbalance valve 40 is connected to the rod cavity 51, and the oil outlet end f of the pressure counterbalance valve 40 is connected to the rodless cavity 52.
Further, based on the above embodiment, as shown in fig. 1 to 3, the hydraulic system of the side erecting machine further includes a first one-way throttle valve 80 and a second one-way throttle valve 90, the first one-way throttle valve 80 is connected in series between the first working port a and the pressure balancing valve 40, the second one-way throttle valve 90 is connected in series between the second working port B and the electromagnetic switch valve 60, or the second one-way throttle valve 90 is connected in series between the second working port B and the one-way sequence valve 70. The hydraulic system of the side stand machine has two working conditions, namely a structure of a lifting member, for example, the arm support has two movement processes, namely an arm support lifting process and a boom descending process. The first one-way throttle valve 80 is used for adjusting the speed of the boom descending process, and the second one-way throttle valve 90 is used for adjusting the speed of the boom ascending process.
In an embodiment, the first check throttle 80 includes a second check valve 81 and a second throttle 82 connected in parallel, and the second check valve 81 is communicated in a direction from the first working port a to the pressure balancing valve 40; the second check throttle valve 90 includes a third check valve 91 and a third throttle valve 92 connected in parallel, and the conducting direction of the third check valve 91 is a direction from the second working port B to the electromagnetic opening/closing valve 60 or the one-way priority valve 70.
Further, the hydraulic system of the side stand machine further includes a synchronizing element 100, the synchronizing element 100 is connected in series between the first working oil port a and the pressure counterbalance valve 40, and the synchronizing element 100 is connected in series with the first check throttle valve 80. The synchronizing element 100 is configured to allow the plurality of hydraulic rams 50 to maintain synchronized movement when the plurality of hydraulic rams 50 are disposed in a hydraulic system.
The embodiment of the present invention includes a pressure source 10, an oil tank 20, an electromagnetic directional valve 30, at least two pressure counter valves 40, at least two hydraulic cylinders 50, at least one electromagnetic switch valve 60, and at least one-way sequence valve 70, wherein each hydraulic cylinder 50 includes a rod cavity 51 and a rodless cavity 52, and the electromagnetic directional valve 30 has a first working oil port a, a second working oil port B, a pressure port P, and an oil return port T; the oil tank 20 is sequentially connected with the pressure source 10 and the pressure port P to form an oil supply flow path, and the first working port a is sequentially connected with each pressure counterbalance valve 40 and each rodless cavity 52 to form a first working flow path; the second working oil port B is connected to the electromagnetic switching valve 60, the one-way sequence valve 70 and the rod cavity 51 in sequence to form a second working flow path, wherein the electromagnetic switching valve 60 is connected in parallel with the one-way sequence valve 70. That is, the technical scheme provided by this embodiment can be through being connected solenoid switch valve 60 and check sequence valve 70 in parallel to prevent the thrust of hydraulic cylinder from becoming the moment of negative value by the positive value, make check sequence valve 70 can withstand the side stand machine, prevent that the side stand machine from leading to the component damage of loading on the side stand machine because of violent rocking.
As shown in FIGS. 1-7, the embodiment of the utility model provides a stand machine still provides one kind.
In one embodiment, the side stand machine comprises a rotating part 1 and a hydraulic system of the side stand machine of all the above embodiments, wherein as shown in fig. 1 to 5, the hydraulic system of the side stand machine comprises a pressure source 10, an oil tank 20, an electromagnetic directional valve 30, at least two pressure counterbalance valves 40, at least two hydraulic oil cylinders 50, at least one electromagnetic switch valve 60 and at least one-way sequence valve 70.
Specifically, as shown in fig. 6 and 7, at least two hydraulic cylinders (e.g., the hydraulic cylinder 50a in fig. 6 and 7) of the hydraulic system of the side stand machine are connected to the rotating member 1 to rotate the rotating member 1. The hydraulic oil cylinder 50a extends or contracts under the action of hydraulic oil provided by a hydraulic system, namely, the first pressure of the cavity with the rod is greater than the pressure of the one-way sequence valve 70, a piston rod of the hydraulic oil cylinder 50a keeps an extending movement state to drive the rotating part 1 to upwards overturn to a preset angle, wherein a mold table and a member are arranged on the rotating part 1, and the preset angle for overturning the rotating part 1 is 85-90 degrees. When the turning angle of the rotating member 1 is a target angle, wherein the target angle is an angle when the rotating member 1 turns to the highest point and just falls back, at this time, the piston rod of the hydraulic oil cylinder 50a is changed from the extending state to the contracting state to drive the rotating member 1 to turn downwards to the initial position, wherein the initial position is a horizontal position.
In one embodiment, the side erecting machine further comprises a supporting piece 2, wherein the supporting piece 2 is provided with a hinge point 3, and the rotating piece 1 is rotatably connected to the hinge point 3; one end of the hydraulic oil cylinder 50a is rotatably connected to the supporting member 2, the other end of the hydraulic oil cylinder 50a is connected to the rotating member 1, and the hydraulic oil cylinder 50a drives the rotating member 1 to rotate around the hinge point 3.
Specifically, the supporting member 2 includes a base 201 and a bracket 202 protruding from the base 201, the base 201 is used for supporting and vibrating the whole side stand structure, the bracket 202 is disposed on the base 201, and a hinge point 3 is disposed at an end departing from the base 201, the rotating member 1 is rotatably connected to the hinge point 3, so that the rotating member 1 can rotate upward or downward around the hinge point 3 under the driving of the hydraulic oil cylinder 50a, and when the rotating member 1 is turned upward to 85 ° to 90 °, the mold table on which the member is loaded completes the demolding and lifting operations of the member under the cooperative work of the traveling crane.
The above is only the optional embodiment of the present invention, and not therefore the limit to the patent scope of the present invention, all the concepts of the present invention utilize the equivalent transformation made by the contents of the specification and the drawings, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The hydraulic system of the side stand machine is characterized by comprising a pressure source, an oil tank, an electromagnetic reversing valve, at least two pressure counter-balance valves, at least two hydraulic oil cylinders, at least one electromagnetic switch valve and at least one-way sequence valve, wherein each hydraulic oil cylinder comprises a rod cavity and a rodless cavity, and the electromagnetic reversing valve is provided with a first working oil port, a second working oil port, a pressure port and an oil return port;
the pressure source is connected to a pressure port of the electromagnetic reversing valve to form an oil supply flow path, and the oil return port is connected to the oil tank to form an oil return flow path;
the first working oil port is sequentially connected with each pressure counterbalance valve and each rodless cavity to form a first working flow path;
the second working oil port is sequentially connected with the electromagnetic switch valve, the one-way sequence valve and the rod cavity to form a second working flow path, wherein the electromagnetic switch valve is connected with the one-way sequence valve in parallel.
2. The hydraulic system of the side stand machine according to claim 1, wherein the one-way sequence valve comprises a first one-way valve and a sequence valve, the first one-way valve and the sequence valve are connected in parallel, one end of the first one-way valve and one end of the sequence valve are connected to the rod cavity, and the other end of the first one-way valve and the other end of the sequence valve are connected to the second working oil port.
3. The hydraulic system of a sidecar according to claim 2, wherein the one-way sequence valve further comprises a first throttle valve, the first throttle valve is connected in series to the sequence valve, and the first throttle valve is connected in parallel with the first one-way valve.
4. The hydraulic system of the sidecar according to claim 1, further comprising a cooler connected in series to the oil return.
5. The hydraulic system of a sidecar according to claim 1, wherein the pressure counterbalance valve is a counterbalance valve or a hydraulic lock.
6. The hydraulic system of the side stand machine according to any one of claims 1 to 5, further comprising a first one-way throttle valve and a second one-way throttle valve, wherein the first one-way throttle valve is connected in series between the first working oil port and the pressure balancing valve, the second one-way throttle valve is connected in series between the second working oil port and the electromagnetic switch valve, or the second one-way throttle valve is connected in series between the second working oil port and the one-way sequence valve.
7. The hydraulic system of the side stand machine according to claim 6, wherein the first one-way throttle valve comprises a second one-way valve and a second throttle valve which are connected in parallel, and the conducting direction of the second one-way valve is the direction from the first working oil port to the pressure balancing valve; and/or
The second one-way throttle valve comprises a third one-way valve and a third throttle valve which are connected in parallel, and the conducting direction of the third one-way valve is the direction from the second working oil port to the electromagnetic switch valve or the one-way sequence valve.
8. The hydraulic system of the side stand machine according to claim 7, further comprising a synchronizing element connected in series between the first working oil port and the pressure counterbalance valve, and connected in series with the first one-way throttle valve.
9. A side stand machine, characterized in that the side stand machine comprises a rotating part and a hydraulic system of the side stand machine according to any one of claims 1-8;
at least two hydraulic oil cylinders of a hydraulic system of the side erecting machine are connected with the rotating part so as to drive the rotating part to rotate.
10. The sidecar according to claim 9 further comprising a support member having a pivot point thereon, said rotatable member being rotatably connected to said pivot point;
one end of the hydraulic oil cylinder is rotatably connected to the supporting piece, the other end of the hydraulic oil cylinder is connected to the rotating piece, and the hydraulic oil cylinder drives the rotating piece to rotate around the hinge point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920625589.2U CN209856133U (en) | 2019-04-30 | 2019-04-30 | Hydraulic system of side stand machine and side stand machine |
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| CN201920625589.2U CN209856133U (en) | 2019-04-30 | 2019-04-30 | Hydraulic system of side stand machine and side stand machine |
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| CN209856133U true CN209856133U (en) | 2019-12-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989955A (en) * | 2019-04-30 | 2019-07-09 | 广东联城住工装备信息科技有限公司 | The hydraulic system of edge-on machine, edge-on machine and its control method |
| CN117920980A (en) * | 2024-03-21 | 2024-04-26 | 中国机械总院集团云南分院有限公司 | Synchronous jacking device of non-ferrous metal ingot casting automatic demolding oil cylinder |
-
2019
- 2019-04-30 CN CN201920625589.2U patent/CN209856133U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109989955A (en) * | 2019-04-30 | 2019-07-09 | 广东联城住工装备信息科技有限公司 | The hydraulic system of edge-on machine, edge-on machine and its control method |
| CN117920980A (en) * | 2024-03-21 | 2024-04-26 | 中国机械总院集团云南分院有限公司 | Synchronous jacking device of non-ferrous metal ingot casting automatic demolding oil cylinder |
| CN117920980B (en) * | 2024-03-21 | 2024-06-11 | 中国机械总院集团云南分院有限公司 | Control method of synchronous jacking device of automatic demolding oil cylinder for nonferrous metal ingot casting |
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