Large-scale pre-pressing horizontal station hydraulic-electric system

Abstract

The utility model discloses a large-scale pre-pressing horizontal station electro-hydraulic system in the technical field of hydraulic pressure. The system comprises an oil tank assembly, a large oil pump is connected with a first reversing valve through a first main oil way, and a small oil pump is connected with the first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve, a fifth reversing valve and a sixth reversing valve through a second main oil way. An oil port P of the first reversing valve is connected with a first main oil way, and an oil port T of the first reversing valve is connected to a first oil return way connected with an oil tank; oil ports P of the second, third, fourth, fifth and sixth reversing valves are connected in parallel to a second main oil path; oil ports T of the second, third, fourth, fifth and sixth reversing valves are connected in parallel to a second oil return path connected with the oil tank; the first reversing valve and the second reversing valve are both connected with the compression oil cylinder; the third reversing valve is connected with a trough oil cylinder; the fourth reversing valve is connected with an anti-blocking oil cylinder; the fifth reversing valve is connected with a door lifting oil cylinder; and the sixth reversing valve is connected with a locking oil cylinder. The garbage compression device has the advantage of ensuring that garbage is compressed more compactly.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic pressure, in particular to a large-scale preloading level station hydraulic-electric system. Background Art

[0002] The complete working process of the currently commonly used horizontal pre-compression station garbage compactor includes chassis docking, compression cycle, material packaging and chassis separation. Among them, the compression cycle process is: the compression cylinder pushes the push head to reciprocate, pushing the garbage from the receiving bin into the compression bin and compressing it. However, since the garbage is loose when not compressed, and the stroke of the compression cylinder cannot fully extend into the compression bin, the compression of the garbage is also achieved by the garbage pushed in later pressing against the garbage in front, and the loose garbage cannot be compacted, resulting in insufficient compression of the garbage. Utility Model Content

[0003] The utility model aims to provide a large-scale pre-pressing horizontal station hydraulic-electric system which can ensure that garbage is compressed more compactly.

[0004] In order to achieve the above-mentioned utility model purpose, the utility model large-scale preloading horizontal station hydraulic and electrical system adopts the following technical solutions:

[0005] A hydraulic-electric system of a large pre-pressurization horizontal station comprises an oil tank assembly, the oil tank assembly comprises an oil tank, and also comprises a double pump connected to the oil tank, the double pump comprises a large oil pump and a small oil pump, the large oil pump is connected to a first reversing valve through a first main oil circuit, the small oil pump is connected to a first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve, a fifth reversing valve and a sixth reversing valve through a second main oil circuit, the first, second, third and fifth reversing valves are all O-type three-position four-way reversing valves, and the fourth and sixth reversing valves are all Y-type three-position four-way reversing valves; the P oil port of the first reversing valve is connected to the first main oil circuit, and the T oil port of the first reversing valve is connected to a first oil return circuit connected to the oil tank; the P oil ports of the second, third, fourth, fifth and sixth reversing valves are connected in parallel to the second main oil circuit, and the T oil ports of the second, third, fourth, fifth and sixth reversing valves are connected in parallel to the second oil return circuit connected to the oil tank; the first reversing valve and the second reversing valve are both connected to a compression cylinder, the first The A oil port of the first reversing valve is connected to the rodless chamber of the compression cylinder, and the B oil port of the first reversing valve is connected to the rod chamber of the compression cylinder; the A oil port of the second reversing valve is connected to the rod chamber of the compression cylinder, and the B oil port of the second reversing valve is connected to the rodless chamber of the compression cylinder; the third reversing valve is connected to the trough cylinder, the A oil port of the third reversing valve is connected to the rod chamber of the trough cylinder, and the B oil port of the third reversing valve is connected to the rodless chamber of the trough cylinder; the fourth reversing valve is connected to the anti-blocking cylinder The A oil port of the fourth reversing valve is connected to the rodless chamber of the anti-floof blocking cylinder, and the B oil port of the fourth reversing valve is connected to the rod chamber of the anti-floof blocking cylinder; the fifth reversing valve is connected to the valve lifting cylinder, the A oil port of the fifth reversing valve is connected to the rod chamber of the valve lifting cylinder, and the B oil port of the fifth reversing valve is connected to the rodless chamber of the valve lifting cylinder; the sixth reversing valve is connected to the locking cylinder, the A oil port of the sixth reversing valve is connected to the rodless chamber of the locking cylinder, and the B oil port of the sixth reversing valve is connected to the rod chamber of the locking cylinder.

[0006] Preferably, the first main oil circuit is connected to a first electromagnetic overflow valve, the overflow port of the first electromagnetic overflow valve is connected to the oil tank, and the second main oil circuit is connected to a second electromagnetic overflow valve, the overflow port of the second electromagnetic overflow valve is connected to the oil tank.

[0007] Preferably, the first electromagnetic overflow valve is set to two pressure values, one of which is 60 bar and the other is 100 bar.

[0008] Preferably, the second electromagnetic overflow valve is set with two pressure values, one of which is 100 bar and the other is 200 bar.

[0009] Preferably, the first main oil circuit is provided with a first one-way valve, and the second main oil circuit is provided with a second one-way valve.

[0010] Preferably, a first one-way throttle valve and a first hydraulic lock are provided between the anti-blocking oil cylinder and the fourth reversing valve.

[0011] Preferably, a second one-way throttle valve and a second hydraulic lock are provided between the locking cylinder and the sixth reversing valve.

[0012] Preferably, a third one-way throttle valve is provided between the valve lifting cylinder and the fifth reversing valve.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model increases the pre-compression action to squeeze out the water in the garbage before the garbage enters the compression bin, so that it becomes a drier block garbage, and then pushes the block garbage into the compression bin for secondary compression. Since the block garbage is relatively compact, the pressing force is relatively large, so the compression ratio of the garbage is large, thereby ensuring that the garbage is compressed and compacted, which is practical;

[0015] 2. The utility model realizes the switching between the large oil pump and the small oil pump through the coordinated use of the first reversing valve and the second reversing valve. The compression can be realized by the action of a single pump to ensure that the garbage is compressed and compacted. During pre-compression, the large oil pump supplies oil first, and the compression cylinder extends quickly to perform a low-pressure fast-forward action. When the pressure reaches 90 bar, the small oil pump is switched to supply oil, and the compression cylinder extends slowly. The compression cylinder performs a high-pressure slow-forward action until the pressure reaches 180 bar, at which time the garbage has been compacted. During pushing, the large oil pump supplies oil, and the compression cylinder extends quickly. At this time, the compression cylinder performs a low-pressure fast-forward action to quickly push the block garbage into the compression bin. The block garbage that enters later pushes against the garbage in front, ensuring that the garbage is compressed more compactly.

[0016] 3. When the compression oil cylinder of the utility model is extended quickly, the oil return speed is accelerated and the oil is directly returned to the oil tank through the first reversing valve, thereby avoiding affecting other valve paths and ensuring the stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the hydraulic principle diagram of the utility model;

[0018] Figure 2 for Figure 1 A magnified view of part A;

[0019] Figure 3 for Figure 1 Enlarged view of part B.

[0020] Among them, 1 oil tank, 2 small oil pump, 3 large oil pump, 4 second main oil circuit, 5 first main oil circuit, 6 second one-way valve, 7 first one-way valve, 8 second return oil circuit, 9 first return oil circuit, 10 first reversing valve, 11 second reversing valve, 12 third reversing valve, 13 fourth reversing valve, 14 fifth reversing valve, 15 sixth reversing valve, 16 compression cylinder, 17 trough cylinder, 18 anti-blocking cylinder, 19 door lifting cylinder, 20 locking cylinder, 21 first hydraulic lock, 22 first one-way throttle valve, 23 third one-way throttle valve, 24 second hydraulic lock, 25 second one-way throttle valve, 26 second electromagnetic overflow valve, 27 first electromagnetic overflow valve. DETAILED DESCRIPTION

[0021] The present invention is further explained below in conjunction with specific implementation methods. It should be understood that these implementation methods are only used to illustrate the present invention and are not used to limit the scope of the present invention. After reading the present invention, various equivalent forms of modifications to the present invention by those skilled in the art all fall within the scope defined by the claims attached to this application.

[0022] like Figure 1-3As shown, a large-scale pre-pressure level station hydraulic and electrical system includes an oil tank assembly, the oil tank assembly includes an oil tank 1, and also includes a double pump connected to the oil tank 1, the double pump includes a large oil pump 3 and a small oil pump 2, the large oil pump 3 is connected to a first reversing valve 10 through a first main oil circuit 5, and the small oil pump 2 is connected to a first reversing valve 10, a second reversing valve 11, a third reversing valve 12, a fourth reversing valve 13, a fifth reversing valve 14 and a sixth reversing valve 15 through a second main oil circuit 4, the first main oil circuit 5 is provided with a first check valve 7, the second main oil circuit 4 is provided with a second check valve 6, the first, second, third and fifth reversing valves 14 are all O-type three-position four-way reversing valves, and the fourth and sixth reversing valves 15 are all Y-type three-position four-way reversing valves. Valve; the P oil port of the first reversing valve 10 is connected to the first main oil circuit 5, and the T oil port of the first reversing valve 10 is connected to the first oil return circuit 9 connected to the oil tank 1; the P oil ports of the second, third, fourth, fifth and sixth reversing valves 15 are connected in parallel to the second main oil circuit 4, and the T oil ports of the second, third, fourth, fifth and sixth reversing valves 15 are connected in parallel to the second oil return circuit 8 connected to the oil tank 1; the first reversing valve 10 and the second reversing valve 11 are both connected to the compression cylinder 16, the A oil port of the first reversing valve 10 is connected to the rodless chamber of the compression cylinder 16, and the B oil port of the first reversing valve 10 is connected to the rod chamber of the compression cylinder 16; the A oil port of the second reversing valve 11 is connected to the rod chamber of the compression cylinder 16, and the second reversing valve The B oil port of 11 is connected to the rodless chamber of the compression cylinder 16; the third reversing valve 12 is connected to the trough cylinder 17, the A oil port of the third reversing valve 12 is connected to the rod chamber of the trough cylinder 17, and the B oil port of the third reversing valve 12 is connected to the rodless chamber of the trough cylinder 17; the fourth reversing valve 13 is connected to the anti-blooming cylinder 18, and a first one-way throttle valve 22 and a first hydraulic lock 21 are arranged between the anti-blooming cylinder 18 and the fourth reversing valve 13, the A oil port of the fourth reversing valve 13 is connected to the rodless chamber of the anti-blooming cylinder 18, and the B oil port of the fourth reversing valve 13 is connected to the rod chamber of the anti-blooming cylinder 18; the fifth reversing valve 14 is connected to the lift valve cylinder 19, and a third The one-way throttle valve 23, the A oil port of the fifth reversing valve 14 is connected to the rod chamber of the valve lifting cylinder 19, and the B oil port of the fifth reversing valve 14 is connected to the rodless chamber of the valve lifting cylinder 19; the sixth reversing valve 15 is connected to the locking cylinder 20, and a second one-way throttle valve 25 and a second hydraulic lock 24 are arranged between the locking cylinder 20 and the sixth reversing valve 15, the A oil port of the sixth reversing valve 15 is connected to the rodless chamber of the locking cylinder 20, and the B oil port of the sixth reversing valve 15 is connected to the rod chamber of the locking cylinder 20; the first main oil circuit 5 is connected to the first electromagnetic overflow valve 27, and the overflow port of the first electromagnetic overflow valve is connected to the oil tank, and the second main oil circuit 4 is connected to the second electromagnetic overflow valve 26, and the overflow port of the second electromagnetic overflow valve is connected to the oil tank;The first electromagnetic relief valve and the second electromagnetic relief valve are both DB3U type multi-stage electro-hydraulic pilot relief valves, which can be purchased directly from Beijing Huade Hydraulic Industry Group Co., Ltd. The DB3U type multi-stage electro-hydraulic pilot relief valve includes an H-type three-position four-way electromagnetic reversing valve and three pilot valves. The pressure of the system can be controlled by the H-type three-position four-way electromagnetic reversing valve to achieve multi-stage changes; the first electromagnetic relief valve 27 sets two pressure values, one of which is 60bar and the other is 100bar; when the 3DT end of the first electromagnetic relief valve is energized, the pressure is controlled by a pilot valve on the left, and the pressure is regulated by a pilot valve on the left. The pressure of the pilot valve is set to 60 bar. When the 4DT end of the first electromagnetic overflow valve is energized, the pressure is controlled by a pilot valve on the right, and the pressure of the pilot valve is set to 100 bar. The second electromagnetic overflow valve 26 sets two pressure values, one of which is 100 bar and the other is 200 bar. When the 1DT end of the second electromagnetic overflow valve is energized, the pressure is controlled by a pilot valve on the left, and the pressure of the pilot valve is set to 100 bar. When the 2DT end of the second electromagnetic overflow valve is energized, the pressure is controlled by a pilot valve on the right, and the pressure of the pilot valve is set to 200 bar. ;

[0023] The specific working process and principle of the utility model are as follows: since the compression chamber is provided with a gate, when the gate is closed, the garbage is first pre-compressed to squeeze out the moisture in the garbage and pre-compress the garbage into a compact block; specifically, the compression cylinder 16 is quickly extended and quickly retracted to push the push head to quickly compress the garbage. At this time, the compression cylinder 16 is fast-forwarded at low pressure. When the pressure reaches 90 bar, the compression cylinder 16 is slowly extended. At this time, the compression cylinder 16 is slow-forwarded at high pressure until the pressure reaches 180 bar. At this time, the garbage has been compressed. Then the gate of the compression chamber is opened, and the block garbage is pushed into the compression chamber by the compression cylinder 16. The block garbage pushed in later presses against the block garbage in front. Since the block garbage is relatively compact, the pressing force is relatively large, so that the compression ratio of the garbage is large, thereby ensuring that the garbage is compressed and compacted. Specifically, the compression cylinder 16 is quickly extended. At this time, the compression cylinder 16 performs a low-pressure fast-forward action, and the block garbage is quickly pushed into the compression chamber for secondary compression. The block garbage pushed in later presses against the garbage in front, ensuring that the garbage is compressed more compactly.

[0024] When the compression cylinder 16 is pre-pressed:

[0025] The 4DT end of the first electromagnetic overflow valve and the 5DT end of the first reversing valve are energized, and the compression cylinder 16 is extended quickly, and the pressure value is 0-90 bar; specifically, the oil of the large oil pump 3 enters the first main oil circuit 5, and the pressure is stabilized by the first electromagnetic overflow valve 27. The pressure of the first electromagnetic overflow valve is 100 bar, and then the hydraulic oil in the first main oil circuit 5 enters the rodless chamber of the compression cylinder 16 from the PA oil port of the first reversing valve 10, and the oil in the rod chamber of the compression cylinder 16 enters the first return oil circuit 9 through the BT oil port of the first reversing valve 10, and then directly returns to the oil tank 1;

[0026] The 2DT end of the second electromagnetic overflow valve and the 7DT end of the second reversing valve are energized, and the compression cylinder 16 is slowly extended, and the pressure value is 90-180 bar; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve is 200 bar, and then the hydraulic oil in the second main oil circuit 4 enters the rodless chamber of the compression cylinder 16 from the PB oil port of the second reversing valve 11, and the oil in the rod chamber of the compression cylinder 16 enters the second return oil circuit 8 from the AT oil port of the second reversing valve 11, and then returns to the oil tank 1;

[0027] The 3DT end of the first electromagnetic overflow valve and the 6DT end of the first reversing valve are energized, and the compression cylinder 16 is quickly retracted; specifically, the oil of the large oil pump 3 enters the first main oil circuit 5, and the pressure is stabilized by the first electromagnetic overflow valve 27. The pressure of the first electromagnetic overflow valve is 60 bar. Then, the hydraulic oil in the first main oil circuit 5 enters the rod chamber of the compression cylinder 16 from the PB oil port of the first reversing valve 10, and the oil in the rodless chamber of the compression cylinder 16 enters the first return oil circuit 9 through the AT oil port of the first reversing valve 10, and then directly returns to the oil tank 1;

[0028] The 1DT end of the second electromagnetic overflow valve and the 8DT end of the second reversing valve are energized, and the compression cylinder 16 is slowly retracted; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the compression cylinder 16 from the PA oil port of the second reversing valve 11, and the oil in the rodless chamber of the compression cylinder 16 enters the second oil return circuit 8 from the BT oil port of the second reversing valve 11, and then returns to the oil tank 1;

[0029] When the compression cylinder 16 pushes the material:

[0030] The 3DT end of the first electromagnetic overflow valve and the 5DT end of the first reversing valve are energized, and the compression cylinder 16 is extended quickly, and the pressure value is 0-60 bar; specifically, the oil of the large oil pump 3 enters the first main oil circuit 5, and the pressure is stabilized by the first electromagnetic overflow valve 27. The pressure of the first electromagnetic overflow valve is 60 bar, and then the hydraulic oil in the first main oil circuit 5 enters the rodless chamber of the compression cylinder 16 from the PA oil port of the first reversing valve 10, and the oil in the rod chamber of the compression cylinder 16 enters the first return oil circuit 9 through the BT oil port of the first reversing valve 10, and then directly returns to the oil tank 1;

[0031] The 3DT end of the first electromagnetic overflow valve and the 6DT end of the first reversing valve are energized, and the compression cylinder 16 is quickly retracted; specifically, the oil of the large oil pump 3 enters the first main oil circuit 5, and the pressure is stabilized by the first electromagnetic overflow valve 27. The pressure of the first electromagnetic overflow valve is 60 bar. Then, the hydraulic oil in the first main oil circuit 5 enters the rod chamber of the compression cylinder 16 from the PB oil port of the first reversing valve 10, and the oil in the rodless chamber of the compression cylinder 16 enters the first return oil circuit 9 through the AT oil port of the first reversing valve 10, and then directly returns to the oil tank 1;

[0032] The 1DT end of the second electromagnetic overflow valve and the 8DT end of the second reversing valve are energized, and the compression cylinder 16 is slowly retracted; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the compression cylinder 16 from the PA oil port of the second reversing valve 11, and the oil in the rodless chamber of the compression cylinder 16 enters the second oil return circuit 8 from the BT oil port of the second reversing valve 11, and then returns to the oil tank 1;

[0033] Action stroke of trough cylinder 17:

[0034] The 2DT end of the second electromagnetic overflow valve and the 9DT end of the third reversing valve are energized, and the trough cylinder 17 is extended at high pressure; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 200 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rodless chamber of the trough cylinder 17 from the PB of the third reversing valve 12, and the oil in the rod chamber of the trough cylinder 17 enters the second oil return circuit 8 from the AT oil port of the third reversing valve 12, and then returns to the oil tank 1;

[0035] The 2DT end of the second electromagnetic overflow valve and the 10DT end of the third reversing valve are energized, and the high pressure of the trough oil cylinder 17 is recovered; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 200 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the trough oil cylinder 17 from the PA of the third reversing valve 12, and the oil in the rodless chamber of the trough oil cylinder 17 enters the second oil return circuit 8 from the BT oil port of the third reversing valve 12, and then returns to the oil tank 1;

[0036] The 1DT end of the second electromagnetic overflow valve and the 9DT end of the third reversing valve are energized, and the trough cylinder 17 extends at low pressure; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rodless chamber of the trough cylinder 17 from the PB of the third reversing valve 12, and the oil in the rod chamber of the trough cylinder 17 enters the second oil return circuit 8 from the AT oil port of the third reversing valve 12, and then returns to the oil tank 1;

[0037] The 1DT end of the second electromagnetic overflow valve and the 10DT end of the third reversing valve are energized, and the trough oil cylinder 17 is retracted at low pressure; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the trough oil cylinder 17 from the PA of the third reversing valve 12, and the oil in the rodless chamber of the trough oil cylinder 17 enters the second oil return circuit 8 from the BT oil port of the third reversing valve 12, and then returns to the oil tank 1;

[0038] Action stroke of anti-blocking cylinder 18:

[0039] The 1DT end of the second electromagnetic overflow valve and the 11DT end of the fourth reversing valve are energized, and the anti-blocking oil cylinder 18 extends; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rodless cavity of the anti-blocking oil cylinder 18 from the PA oil port of the fourth reversing valve 13, and the oil in the rod cavity of the anti-blocking oil cylinder 18 enters the second oil return circuit 8 from the BT oil port of the fourth reversing valve 13, and then returns to the oil tank 1;

[0040] The 1DT end of the second electromagnetic overflow valve and the 12DT end of the fourth reversing valve are energized, and the anti-blocking oil cylinder 18 is retracted; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the anti-blocking oil cylinder 18 from the PB oil port of the fourth reversing valve 13, and the oil in the rodless chamber of the anti-blocking oil cylinder 18 enters the second oil return circuit 8 from the AT oil port of the fourth reversing valve 13, and then returns to the oil tank 1;

[0041] The action stroke of the door lifting cylinder 19:

[0042] The 1DT end of the second electromagnetic overflow valve and the 13DT end of the fifth reversing valve are energized, and the valve lift cylinder 19 rises; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rodless chamber of the valve lift cylinder 19 from the PB oil port of the fifth reversing valve 14, and the oil in the rod chamber of the valve lift cylinder 19 enters the second oil return circuit 8 from the AT oil port of the fifth reversing valve 14, and then returns to the oil tank 1;

[0043] The 1DT end of the second electromagnetic overflow valve and the 14DT end of the fifth reversing valve are energized, and the valve lift cylinder 19 descends; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the valve lift cylinder 19 from the PA oil port of the fifth reversing valve 14. The oil in the rod chamber of the valve lift cylinder 19 enters the second oil return circuit 8 from the BT oil port of the fifth reversing valve 14, and then returns to the oil tank 1;

[0044] Action stroke of locking cylinder 20:

[0045] The 1DT end of the second electromagnetic overflow valve and the 15DT end of the sixth reversing valve are energized, and the locking cylinder 20 is locked; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar. Then, the hydraulic oil in the second main oil circuit 4 enters the rodless chamber of the locking cylinder 20 from the PA oil port of the sixth reversing valve 15, and the oil in the rod chamber of the locking cylinder 20 enters the second oil return circuit 8 from the BT oil port of the sixth reversing valve 15, and then returns to the oil tank 1;

[0046] The 1DT end of the second electromagnetic overflow valve and the 16DT end of the sixth reversing valve are energized, and the locking cylinder 20 opens; specifically, the oil of the small oil pump 2 enters the second main oil circuit 4, and the pressure is stabilized by the second electromagnetic overflow valve 26. The pressure of the second electromagnetic overflow valve 26 is 100 bar, and then, the hydraulic oil in the second main oil circuit 4 enters the rod chamber of the locking cylinder 20 from the PB oil port of the sixth reversing valve 15, and the oil in the rodless chamber of the locking cylinder 20 enters the second return oil circuit 8 from the AT oil port of the sixth reversing valve 15, and then returns to the oil tank 1.

[0047] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0048] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0049] The above description shows and describes the preferred embodiments of the utility model. As mentioned above, it should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the utility model concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not depart from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A large-scale preloading horizontal station hydraulic and electrical system, characterized in that: It includes an oil tank assembly, which includes an oil tank and a double pump connected to the oil tank. The double pump includes a large oil pump and a small oil pump. The large oil pump is connected to a first reversing valve through a first main oil circuit, and the small oil pump is connected to a first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve, a fifth reversing valve and a sixth reversing valve through a second main oil circuit. The first, second, third and fifth reversing valves are all O-type three-position four-way reversing valves, and the fourth and sixth reversing valves are all Y-type three-position four-way reversing valves. The P oil port of the first reversing valve is connected to the first main oil circuit, and the T oil port of the first reversing valve is connected to the first oil return circuit connected to the oil tank; the P oil ports of the second, third, fourth, fifth, and sixth reversing valves are connected in parallel to the second main oil circuit, and the T oil ports of the second, third, fourth, fifth, and sixth reversing valves are connected in parallel to the second oil return circuit connected to the oil tank; The first reversing valve and the second reversing valve are both connected to a compression cylinder, the A oil port of the first reversing valve is connected to the rodless chamber of the compression cylinder, and the B oil port of the first reversing valve is connected to the rod chamber of the compression cylinder; the A oil port of the second reversing valve is connected to the rod chamber of the compression cylinder, and the B oil port of the second reversing valve is connected to the rodless chamber of the compression cylinder; the third reversing valve is connected to a trough cylinder, the A oil port of the third reversing valve is connected to the rod chamber of the trough cylinder, and the B oil port of the third reversing valve is connected to the rodless chamber of the trough cylinder; The fourth reversing valve is connected to the anti-floof blocking cylinder, the A oil port of the fourth reversing valve is connected to the rodless chamber of the anti-floof blocking cylinder, and the B oil port of the fourth reversing valve is connected to the rod chamber of the anti-floof blocking cylinder; the fifth reversing valve is connected to the valve lifting cylinder, the A oil port of the fifth reversing valve is connected to the rod chamber of the valve lifting cylinder, and the B oil port of the fifth reversing valve is connected to the rodless chamber of the valve lifting cylinder; the sixth reversing valve is connected to the locking cylinder, the A oil port of the sixth reversing valve is connected to the rodless chamber of the locking cylinder, and the B oil port of the sixth reversing valve is connected to the rod chamber of the locking cylinder.

2. The large-scale preloading horizontal station hydraulic and electrical system according to claim 1 is characterized in that: The first main oil circuit is connected to a first electromagnetic overflow valve, the overflow port of the first electromagnetic overflow valve is connected to the oil tank, and the second main oil circuit is connected to a second electromagnetic overflow valve, the overflow port of the second electromagnetic overflow valve is connected to the oil tank.

3. The large-scale preloading horizontal station hydraulic and electrical system according to claim 2 is characterized in that: The first electromagnetic overflow valve is set with two pressure values, one of which is 60 bar and the other is 100 bar.

4. The large-scale preloading horizontal station hydraulic and electrical system according to claim 2 is characterized in that: The second electromagnetic overflow valve is set to two pressure values, one of which is 100 bar and the other is 200 bar.

5. The large-scale preloading horizontal station hydraulic and electrical system according to claim 1 is characterized in that: The first main oil circuit is provided with a first one-way valve, and the second main oil circuit is provided with a second one-way valve.

6. The large-scale preloading horizontal station hydraulic and electrical system according to claim 1 is characterized by: A first one-way throttle valve and a first hydraulic lock are provided between the anti-blocking oil cylinder and the fourth reversing valve.

7. The large-scale preloading horizontal station hydraulic and electrical system according to claim 1 is characterized in that: A second one-way throttle valve and a second hydraulic lock are provided between the locking oil cylinder and the sixth reversing valve.

8. The large-scale preloading horizontal station hydraulic and electrical system according to claim 1 is characterized by: A third one-way throttle valve is arranged between the door lifting cylinder and the fifth reversing valve.

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