Valve body mounting plate for communicating air cylinder with reversing valve and pneumatic hydraulic station

Abstract

The utility model provides a valve body mounting plate for communicating an air cylinder with a reversing valve and a pneumatic hydraulic station. And a first working passage and a second working passage are arranged in the valve body mounting plate. A first working port of the reversing valve is communicated with a first air cavity connecting port, communicated with a first air cavity, of the air cylinder through a first working passage arranged in the valve body mounting plate, and a second working port of the reversing valve is communicated with a second air cavity connecting port, communicated with a second air cavity, of the air cylinder through a second working passage. Original external air pipes between a first air cavity connecting port and a first working port and between a second air cavity connecting port and a second working port are replaced, arrangement of the external air pipes is reduced, connection air tightness is improved, air leakage points are reduced, the working stability of a hydraulic station is improved, an oil cylinder can continuously supply oil, and the working efficiency is improved. The problems that due to the fact that the number of gas passing pipelines of the hydraulic station is large, the work site is disordered, misconnection is prone to occurring, gas tightness is poor, and gas leakage points are prone to occurring are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic station technology, and more specifically, to a valve body mounting plate and a pneumatic hydraulic station for connecting a cylinder and a directional valve. Background Technology

[0002] A hydraulic power unit is a hydraulic device that supplies oil according to the required flow direction, pressure and flow rate, and is usually used in conjunction with machine tools that require hydraulically driven actuators.

[0003] See Figure 1 This is a schematic diagram of a hydraulic station provided in the prior art. As shown in the figure, the hydraulic station includes: a linked cylinder 1' and an oil cylinder 2'; wherein, the cylinder end caps on both sides of cylinder 1' are respectively provided with a first pilot valve 5' and a second pilot valve 6', and cylinder 1' is connected to a reversing valve 3', with the air source connected to the air inlets of the first pilot valve 5', the second pilot valve 6', and the reversing valve 3' respectively; the A' outlet of the reversing valve 3' is connected to one side of cylinder 1', and the B' outlet of the reversing valve 3' is connected to... The other side of cylinder 1' is connected; the first pilot valve 5' is connected to the reversing valve 3' to control the reversing valve 3' to open the A' outlet of the reversing valve 3' so that the A' outlet of the reversing valve 3' is connected to the P' inlet of the reversing valve 3'; the second pilot valve 6' is connected to the reversing valve 3' to control the reversing valve 3' to open the B' outlet of the reversing valve 3' so that the B' outlet of the reversing valve 3' is connected to the P' inlet of the reversing valve 3'.

[0004] In the aforementioned hydraulic station, the air outlet of the air source is connected to the A' outlet of the directional valve 3', the C' inlet of the first pilot valve 5', and the D' inlet of the second pilot valve 6' via a four-way valve. The four ports of the four-way valve are connected to the air outlet of the air source, the A' outlet of the directional valve 3', the C' inlet of the first pilot valve 5', and the D' inlet of the second pilot valve 6' via four external air pipes. The E' outlet of the first pilot valve 5' and the F' outlet of the second pilot valve 6' are each connected to the first control port Y1' and the second air control port Z' of the directional valve 3' via an external air pipe. Therefore, the aforementioned hydraulic station has a large number of air pipes, resulting in a messy work site and a tendency to make incorrect connections. At the same time, the aforementioned hydraulic station has poor air tightness and is prone to leaks, leading to insufficient stability in the operation of the hydraulic station. Utility Model Content

[0005] In view of this, the present invention proposes a valve body mounting plate and a pneumatic hydraulic station for connecting the cylinder and the reversing valve, aiming to solve the problems of insufficient working stability of existing hydraulic stations due to the large number of air passages, which makes the work site messy and prone to incorrect connections, and the poor air tightness which makes air leakage points easy to occur.

[0006] On the one hand, this utility model proposes a valve body mounting plate for connecting a cylinder and a reversing valve. The valve body mounting plate is provided with a first working passage for connecting the first working port of the reversing valve with the first air chamber connection port on the cylinder that connects to the first air chamber. The valve body mounting plate is provided with a second working passage for connecting the second working port of the reversing valve with the second air chamber connection port on the cylinder that connects to the second air chamber.

[0007] Furthermore, the valve body mounting plate is provided with a first working connection port and a first air chamber connection port, both of which are connected to the first working passage, for connecting and communicating with the first working port and the first air chamber connection port respectively; the valve body mounting plate is provided with a second working connection port and a second air chamber connection port, both of which are connected to the second working passage, for connecting and communicating with the second working port and the second air chamber connection port respectively.

[0008] Furthermore, in the aforementioned valve body mounting plate, the first working communication port and the second working communication port are disposed on the first wall surface of the valve body mounting plate, and the first air chamber communication port and the second air chamber communication port are disposed on the second wall surface of the valve body mounting plate; wherein, the first wall surface and the second wall surface are arranged opposite to each other.

[0009] Furthermore, in the aforementioned valve body mounting plate, the cylinder is provided with a first pilot valve, which has a first pilot inlet and a first pilot outlet. The first pilot valve is used to trigger the first pilot valve when the cylinder piston slides to the first end, thereby connecting the first pilot inlet and the first pilot outlet. The valve body mounting plate also has a first pneumatic control connection passage and a second pneumatic control connection passage. The first pneumatic control connection passage connects the first pilot inlet to the main inlet of the reversing valve, and the second pneumatic control connection passage connects the first pilot outlet to the first reversing control port of the reversing valve.

[0010] Furthermore, in the aforementioned valve body mounting plate, the cylinder is provided with a second pilot valve, which has a second pilot inlet and a second pilot outlet. This second pilot valve is triggered when the cylinder piston slides to the second end, thereby connecting the second pilot inlet and the second pilot outlet. The valve body mounting plate also includes a third pneumatic control connection passage and a fourth pneumatic control connection passage. The third pneumatic control connection passage connects the second pilot inlet to the main inlet of the reversing valve, and the fourth pneumatic control connection passage connects the second pilot outlet to the second reversing control port of the reversing valve.

[0011] Furthermore, in the aforementioned valve body mounting plate, the cylinder is provided with a second pilot valve, which has a second pilot inlet and a second pilot outlet for connecting to the outside. This second pilot valve is triggered when the cylinder piston slides to the second end, thereby connecting the second pilot inlet and the second pilot outlet. The valve body mounting plate also has a third pneumatic control connection passage. This third pneumatic control connection passage connects the second pilot inlet with the second pneumatic control connection passage, or connects the second pilot inlet with the first reversing control port.

[0012] Furthermore, the valve body mounting plate described above is provided with a first auxiliary exhaust valve chamber and a first auxiliary exhaust port. A first auxiliary exhaust valve core is provided within the first auxiliary exhaust valve chamber, and is slidably disposed within the first auxiliary exhaust valve chamber. The two ends of the first auxiliary exhaust valve chamber are respectively connected to a first auxiliary working passage and a second auxiliary working passage, which are respectively connected to the first working passage and the second working passage. When air enters the first air chamber and exhausts from the second air chamber, the first auxiliary exhaust valve core slides to a second state, connecting the second auxiliary working passage with the first auxiliary exhaust port and disconnecting the connection between the first auxiliary working passage and the first auxiliary exhaust port. When air enters the second air chamber and exhausts from the first air chamber, the first auxiliary exhaust valve core slides to a first state, connecting the first auxiliary working passage with the first auxiliary exhaust port and disconnecting the connection between the second auxiliary working passage and the first auxiliary exhaust port.

[0013] Furthermore, in the aforementioned valve body mounting plate, an auxiliary exhaust valve housing is provided on one side. The auxiliary exhaust valve housing is provided with a second auxiliary exhaust valve chamber, a third working port, a fourth working port, and a second auxiliary exhaust port. A second auxiliary exhaust valve core is provided in the second auxiliary exhaust valve chamber, which is slidably disposed within the second auxiliary exhaust valve chamber. A first auxiliary communication passage is provided in the valve body mounting plate, which communicates with the first working passage and is used to connect the third working port. A second auxiliary communication passage is provided in the valve body mounting plate, which communicates with the second working passage and is used to connect the fourth working port. The third working port and the fourth working port are respectively connected to both ends of the second auxiliary exhaust valve chamber. When air enters the first air chamber and exhausts from the second air chamber, the second auxiliary exhaust valve core slides to the fourth state, connecting the fourth working port and the second auxiliary exhaust port, and cutting off the communication between the third working port and the second auxiliary exhaust port. When air enters the second air chamber and exhausts from the first air chamber, it is in the third state, connecting the third working port and the second auxiliary exhaust port, and cutting off the communication between the fourth working port and the second auxiliary exhaust port.

[0014] Furthermore, in the aforementioned valve body mounting plate, when the directional valve core is in the neutral position, allowing air to enter through the first working port and not venting through the second working port, the first auxiliary exhaust valve core connects to the second auxiliary working passage and the first auxiliary exhaust port, or the second auxiliary exhaust valve core connects to the third working port and the second auxiliary exhaust port; when the directional valve core is in the neutral position, allowing air to enter through the second working port and not venting through the first working port, the first auxiliary exhaust valve core connects to the second auxiliary working passage and the first auxiliary exhaust port, or the second auxiliary exhaust valve core connects to the fourth working port and the second auxiliary exhaust port.

[0015] Furthermore, the valve body mounting plate mentioned above, the directional valve and the valve body mounting plate are an integral structure.

[0016] On the other hand, this utility model also proposes a pneumatic hydraulic station, which is equipped with the aforementioned valve body mounting plate.

[0017] The valve body mounting plate and pneumatic hydraulic station provided by this utility model connect the first working port A of the directional valve to the first air chamber connection port G on the cylinder through the first working passage provided in the valve body mounting plate, and connect the second working port B of the directional valve to the second air chamber connection port H on the cylinder through the second working passage. This replaces the original external air pipes between the first air chamber connection port G and the first working port A, and between the second air chamber connection port H and the second working port B. This reduces the arrangement of external air pipes, improves the airtightness of the connection, reduces the number of air leakage points, improves the working stability of the hydraulic station, and enables the cylinder to continuously supply oil. It solves the problem that the hydraulic station has many air passages, which makes the work site messy and prone to incorrect connection, and the poor airtightness makes it prone to air leakage points, resulting in insufficient working stability of the hydraulic station and the inability of the cylinder to continuously supply oil.

[0018] Furthermore, the first pilot inlet E of the first pilot valve and the main outlet Q of the directional valve are connected through the first pneumatic connection passage set in the valve body mounting plate 7. The first pilot outlet C of the first pilot valve and the control port Y1 of the directional valve are connected through the second pneumatic connection passage set in the valve body mounting plate 7. The second pilot inlet F of the second pilot valve and the second pneumatic connection passage are connected through the third pneumatic connection passage set in the valve body mounting plate. This replaces the original external air pipe between the pilot valve and the directional valve, further reducing the arrangement of external air pipes. This means that only the air pipe between the air source and the main outlet P needs to be installed on the directional valve 3, further improving the airtightness of the connection, reducing leakage points, and further improving the working stability of the hydraulic station.

[0019] Furthermore, an auxiliary exhaust valve is provided inside or on one side of the valve body mounting plate, which is connected to the first working passage and the second working passage to connect to the two cylinder chambers respectively. When one cylinder chamber is receiving air and the other cylinder chamber is venting air, the other cylinder chamber is connected to the outside to provide auxiliary exhaust for the other cylinder chamber. This allows the cylinder piston to move towards the cylinder end cover on the side of the other cylinder chamber under the action of the air pressure in the cylinder chamber, thereby triggering the pilot valve to reverse the valve core of the reversing valve until the corresponding exhaust port and air inlet are connected. Especially when the air source pressure drops or fluctuates greatly, the reversing valve can switch to the state where the other cylinder chamber is receiving air and the other cylinder chamber is venting air, avoiding cylinder jamming. That is, it avoids the occurrence of cylinder jamming, reversing valve jamming, tooling loss of pressure leading to workpiece not being clamped tightly, tool collision, etc. Attached Figure Description

[0020] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0021] Figure 1 A schematic diagram of the structure of a pneumatic-hydraulic power unit provided in the prior art;

[0022] Figure 2 A top view of the pneumatic hydraulic station provided in an embodiment of this utility model; wherein the reversing valve is a spring-reset reversing valve;

[0023] Figure 3 for Figure 2 A cross-sectional view at JJ; wherein the directional valve core is at the right end, the first working port is for air intake and the second working port is for air exhaust, so that the first air chamber is for air intake and the second air chamber is for air exhaust.

[0024] Figure 4 for Figure 2 A cross-sectional view at JJ; wherein the directional valve core is at the left end, the first working port exhausts air and the second working port enters air, so that the second air chamber enters air and the first air chamber exhausts air.

[0025] Figure 5 for Figure 2 Sectional view at point KK;

[0026] Figure 6 for Figure 2 Sectional view at point II;

[0027] Figure 7 A schematic diagram of the structure of the valve body mounting plate provided in an embodiment of this utility model;

[0028] Figure 8 A schematic diagram of the structure of the auxiliary exhaust valve provided in an embodiment of the present utility model; wherein, the second auxiliary exhaust valve core of the auxiliary exhaust valve is in a first state;

[0029] Figure 9 A schematic diagram of the structure of the auxiliary exhaust valve provided in an embodiment of the present utility model; wherein, the second auxiliary exhaust valve core of the auxiliary exhaust valve is in a second state;

[0030] Figure 10 A schematic diagram of the structure of the second auxiliary exhaust valve core provided in this embodiment of the present invention;

[0031] Figure 11 A cross-sectional view of the second auxiliary exhaust valve core provided in the embodiment of this utility model in the first communicating groove and / or the second communicating groove;

[0032] Figure 12 A cross-sectional view of the first working passage of the pneumatic hydraulic station provided in another embodiment of the present invention; wherein the reversing valve is the reversing valve disclosed in Chinese Publication No. CN119163771A;

[0033] Figure 13 A cross-sectional view of the second working passage and auxiliary exhaust chamber of the pneumatic hydraulic station provided in another embodiment of the present invention; wherein the reversing valve is the reversing valve disclosed in Chinese Publication No. CN119163771A;

[0034] Figure 14 A cross-sectional view of the third pneumatic control connection passage of the pneumatic hydraulic station provided in another embodiment of the present invention; wherein, the reversing valve is the reversing valve disclosed in Chinese Publication No. CN119163771A;

[0035] Figure 15 A cross-sectional view of the pneumatic hydraulic station provided in another embodiment of the present invention, showing the sections of the first working passage and the second working passage; wherein the directional valve and the valve body mounting plate are an integral structure;

[0036] Explanation of reference numerals in the attached drawings: 1-Cylinder, 11-Cylinder piston, 12-First air chamber, 13-Second air chamber, 2-Hydraulic cylinder, 21-Hydraulic cylinder piston, 3-Reversing valve, 32-Reset spring, 31-Reversing working chamber, 311-Pneumatic control chamber, 33-Reversing valve core, 331-First exhaust section, 332-First working section, 333-Main intake section, 334-Second working section, 335-Second exhaust section, 34-Main intake connecting passage, 35-Second pneumatic control reversing chamber, 36-First pneumatic control passage, 37-Second pneumatic control passage, 4-First pilot valve, 5-Second pilot valve, 6-Linkage rod, 7-Valve body mounting plate. 71-First working passage, 72-Second working passage, 73-First mounting hole, 74-Second mounting hole, 75-First pneumatic control connection passage, 76-Second pneumatic control connection passage, 77-Third pneumatic control connection passage, 78-First auxiliary exhaust valve chamber, 79-First auxiliary exhaust valve core, 710-First auxiliary working passage, 711-Second auxiliary working passage, 712-Limiting plate, 713-Fourth pneumatic control connection passage, 8-Sealing ring, 9-Auxiliary exhaust valve, 91-Auxiliary exhaust valve housing, 911-Second auxiliary exhaust valve chamber, 9111-First auxiliary push section, 9112-Auxiliary exhaust section, 9113-Second auxiliary push section 912-First machining process channel, 913-Second machining process channel, 92-Second auxiliary exhaust valve core, 921-Notch, 922-First large-diameter valve core, 923-Small-diameter valve core, 924-Second large-diameter valve core, 925-First connecting groove, 926-Second connecting groove, 927-First sealing ring, 928-Second sealing ring, 93-First plug, 94-Second plug, 10-Pilot return spring, A-First working port, B-Second working port, C-First pilot exhaust port, D-Second pilot exhaust port, E-First pilot inlet port, F-Second pilot inlet port, G-First air chamber connection port, H-Second air chamber connection port L - First working connection port, M - First air chamber connection port, N - Third working port, O - Fourth working port, P - Main air inlet, Q - Main air outlet, R - First auxiliary exhaust port, R1 - Pilot exhaust port, S - Second auxiliary exhaust port, T - Second air chamber connection port, U - Air control air inlet, V1 - First reversing connection port, V2 - Second reversing connection port, V3 - Third reversing connection port, V4 - Fourth reversing connection port, X - Second working connection port, Y1 - First reversing control port, Y2 - Control connection port, Y3 - Second reversing control port, Z1 - First air control port, Z2 - Second air control port, Z3 - Third air control port, Z4 - Fourth air control port. Detailed Implementation

[0037] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] See Figures 2 to 5 The figure shows a schematic diagram of the pneumatic-hydraulic station provided in an embodiment of the present invention. As shown, the pneumatic-hydraulic station includes: a cylinder 1, an oil cylinder 2, a directional valve 3, a first pilot valve 4, a second pilot valve 5, a linkage rod 6, and a valve body mounting plate 7; wherein,

[0039] The piston 21 of the hydraulic cylinder 2 is connected to the piston 11 of the air cylinder 1 via a linkage rod 6. The linkage rod 6 is slidably inserted through the cylinder end cap (e.g., in the air cylinder 1, near the hydraulic cylinder 2) located in the cylinder 1. Figure 3 The left cylinder end cover shown allows the cylinder piston 21 to slide synchronously with the cylinder piston 11.

[0040] Specifically, cylinder 1 has a through hole, through which cylinder 1 and hydraulic cylinder 2 are connected. Cylinder 1 contains a piston 11 that contacts its inner wall, and hydraulic cylinder 2 contains a piston 21 that contacts its inner wall. Cylinder piston 11 and hydraulic piston 21 are connected by a linkage rod 6, which passes through the through hole. In this embodiment, both ends of the linkage rod 6 are fixedly connected to cylinder piston 11 and hydraulic piston 21 respectively, to achieve linkage between cylinder 1 and hydraulic cylinder 2. This embodiment uses a single hydraulic cylinder as an example; however, it can also use two hydraulic cylinders, and this embodiment does not impose any limitations on this. In this embodiment, the piston area of ​​cylinder piston 11 is larger than that of hydraulic cylinder piston 21. In this embodiment, the piston area of ​​cylinder piston 11 can be several times larger than that of hydraulic cylinder piston 21, which facilitates pressure calculation. For example, if the piston area of ​​cylinder piston 11 is 6 times that of hydraulic cylinder piston 21, then cylinder 1 outputs a pressure of 1 bar, and hydraulic cylinder 2 outputs a pressure of 6 bar. Of course, it can also be 4 times or other multiples. In this embodiment, no limitation is made.

[0041] The main air inlet P of the reversing valve 3 is connected to the air source. The first working port A and the second working port B of the reversing valve 3 are respectively connected to the first air chamber 12 and the second air chamber 13 of the cylinder 1. The reversing valve 3 is used to sequentially switch the intake and exhaust of the first air chamber 12 and the second air chamber 13. The reversing valve 3 is provided with a reversing control port, namely the first reversing control port Y1.

[0042] Specifically, the end caps at both ends of cylinder 1 (such as...) Figure 3 The left and right end caps shown are respectively provided with a first air chamber connection port G and a second air chamber connection port H, which are used to communicate with the first working port A and the second working port B respectively; the first air chamber connection port G and the second air chamber connection port H are respectively connected to the first air chamber 12 and the second air chamber 13 of the cylinder 1 through the air chamber communication channels provided in the left and right end caps of the cylinder. The air chamber communication channels can be L-shaped to facilitate processing, or they can be other structures. In this embodiment, no limitation is made on them. The reversing valve 3 is a spring-return pneumatically controlled reversing valve. The reversing valve 3 has an internal reversing working chamber 31. The reversing valve core 33 of the reversing valve 3 can slide within the reversing working chamber 31. Furthermore, a pneumatic control chamber 311 is formed between the reversing valve core 33 and the right end of the reversing working chamber 31, which is connected to a first reversing control port Y1. A return spring 32 is provided at the left end of the reversing working chamber 31. When air enters through the first reversing control port Y1, the reversing valve core 33 of the reversing valve 3 can move to the left and compress the return spring 32 until the reversing valve core 33 moves to the left to... Figure 4 At the left end limit shown, the first working port A is connected to the main air inlet P, and the second working port B is connected to the valve body exhaust port (not shown in the figure), so that the first air chamber 12 and the second air chamber 13 can be inlet and outlet respectively. The first reversing control port Y1 can be closed for air intake, and the air control chamber pressure is maintained, so that the reversing valve core 33 remains in a fixed position, thereby allowing the first air chamber 12 and the second air chamber 13 to continuously inlet and outlet respectively, thereby pushing the cylinder piston 11 to continuously move to the right. And when the first reversing control port Y1 is opened for outlet outlet, the reversing valve core 33 can move to the right under the action of the return spring 32 until it reaches the position shown in the figure. Figure 3 At the left end limit shown, the second working port B is connected to the main air intake port P and the first working port A is connected to the valve body exhaust port, so that the second air chamber 13 and the first air chamber 12 respectively receive air and exhaust air, thereby pushing the cylinder piston 11 to move to the left. There can be two valve body exhaust ports, namely the first valve body exhaust port and the second valve body exhaust port, which can be respectively located on both sides of the first working port A and the second working port B (e.g., ...). Figure 3 (as shown on the left and right sides), so that it is connected to the first working port A and the second working port B respectively when venting from the first working port A and the second working port B respectively. In this embodiment, in order to provide stability for the reversing valve core 33, preferably, the end face of the reversing valve core 33 facing the return spring 32 (such as the left and right sides shown), is connected to the first working port A and the second working port B respectively when venting from the first working port A and the second working port B respectively. Figure 3 The left end face shown can be smaller than the end face of the directional valve core 33 that is close to the first directional control port Y1 (e.g., Figure 3(The right end face shown). Of course, in other embodiments, the left end of the reversing working chamber 31 can also be connected to the main air inlet P, and the two are continuously connected to allow continuous airflow. The small cavity between the inner wall of the left end of the reversing working chamber 31 and the left end face of the reversing valve core 33 is continuously ventilated to replace the return spring 32. When the first reversing control port Y1 is inlet, the right large end has a large area and a large output force, which pushes the reversing valve core 33 to the left to complete the reversing. When the first reversing control port Y1 is outlet, the air pressure in the left small end pushes the reversing valve core 33 to the right to perform the reversing.

[0043] In this embodiment, as Figure 5 As shown, the reversing valve 3 has a main air intake passage 34 connected to the main air intake port P, which connects to the left small cavity in the reversing working chamber 31, i.e., the cavity between the left side wall of the reversing working chamber 31 and the left end of the reversing valve core 33. In this embodiment, when the reversing valve core 33 slides to the left, there is a gap between the left side wall of the reversing working chamber 31 and the left end of the reversing valve core 33. This gap can be limited by a protruding structure, allowing communication with the main air intake passage 34 through the gap, thus replacing the return spring 32 by allowing air to pass through. In this embodiment, the reversing valve 3 also has a main air outlet Q connected to the main air intake passage 34, which, along with the first working port A and the second working port B, is located on the bottom wall of the reversing valve 3.

[0044] In this embodiment, the directional valve core 33 has a five-section structure. The outer wall of the directional valve core 33, along its axial direction from left to right, is provided with a first exhaust section 331, a first working section 332, a main intake section 333, a second working section 334, and a second exhaust section 335. Regardless of the directional valve core 33's sliding position, the first exhaust section 331 remains connected to the first valve body exhaust port; the first working section 332 remains connected to the first working port A; the main intake section 333 remains connected to the main intake port P; the second working section 334 remains connected to the second working port B; and the second exhaust section 335 remains connected to the second valve body exhaust port. When the directional valve core 33 slides to the left... Figure 3 When the left end is shown, the first exhaust section 331 and the first working section 332 are connected to achieve the connection between the first working port A and the exhaust port of the left valve body, and the main intake section 333 and the second working section 334 are connected to achieve the connection between the main intake port P and the second working port B, so that the first air chamber 12 exhausts air and the second air chamber 13 intakes air, so that the cylinder piston 11 can move to the left (relative to the left). Figure 3 (As shown in the position); the directional valve core 33 slides to the right as... Figure 4The right end shown connects to the second working section 334 and the second exhaust section 335 to connect the second working port B with the exhaust port of the right valve body, and connects to the first working section 332 and the main intake section 333 to connect the main intake port P with the first working port A, so that the second air chamber 13 exhausts air and the first air chamber 12 intakes air, allowing the cylinder piston 11 to move to the right (relative to the right). Figure 4 (Regarding the location shown).

[0045] See also Figure 5 The first pilot valve 4 and the second pilot valve 5 are disposed in the second air chamber 13 and the first air chamber 12, respectively. When the cylinder piston 11 slides to the corresponding position, the first pilot valve 4 and the second pilot valve 5 are triggered to open, so as to send the signal of the cylinder piston 11 sliding to the position to the reversing valve 3 to control its reversing. After the first pilot valve 4 and the second pilot valve 5 are triggered to open, they can control the intake and exhaust of the first reversing control port Y1, so as to control the reversing valve core 33 to slide to the left or to the right until the reversing valve core 33 is reversed to the position, thereby switching the intake and exhaust of the second air chamber 13 and the first air chamber 12.

[0046] Specifically, the first pilot valve 4 is located at the first end of cylinder 1 (e.g., Figure 5 (As shown on the right end), the second pilot valve 5 is located at the second end of cylinder 1 (e.g., the right end). Figure 5 As shown on the left end, both the first pilot valve 4 and the second pilot valve 5 are partially protruding from the cylinder cavities on both sides of the cylinder piston 11. This allows the second pilot valve 5 and the first pilot valve 4 to be activated respectively when the cylinder piston 11 moves to its left or right positions. In other words, when the cylinder piston 11 moves to its right position (i.e., to the first end), the first pilot valve 4 is activated, controlling the intake of air into the first reversing control port Y1. Conversely, when the cylinder piston 11 moves to its left position (i.e., to the second end), the second pilot valve 5 is activated, controlling the exhaust of air from the first reversing control port Y1. The working principles of the first pilot valve 4 and the second pilot valve 5 can be referenced from the working principle of the corresponding pneumatic control valve in the energy-saving hydraulic station disclosed in Chinese Publication No. CN119042180A.

[0047] See also Figure 5The first pilot valve 4 has its first pilot inlet port E connected to the main inlet port P, and its first pilot outlet port C connected to the first reversing control port Y1. The second pilot valve 5 has its second pilot inlet port F connected to either the first reversing control port Y1 or the first pilot outlet port C, and its second pilot outlet port D connected to the outside. After the first pilot valve 4 is opened by the cylinder piston 11, the first pilot outlet port C connects to the first pilot inlet port E, thereby connecting the main inlet port P and the first reversing control port Y1, controlling the intake of the first reversing control port Y1. After the second pilot valve 5 is opened by the cylinder piston 11, the second pilot outlet port D connects to the second pilot inlet port F, thereby connecting the first reversing control port Y1 to the outside, realizing the exhaust of the first reversing control port Y1.

[0048] Specifically, the valve body of the second pilot valve 5, i.e., the pilot valve body, is equipped with a sliding pilot valve core. The pilot valve body has a second pilot outlet port D and a second pilot inlet port F. Sliding the pilot valve core allows it to slide to a position corresponding to the second pilot outlet port D and the second pilot inlet port F. An actuating block is provided on one side of the pilot valve core, and the actuating block is connected to the pilot valve core to slide synchronously relative to the pilot valve body, thereby realizing the connection and disconnection of the second pilot outlet port D and the second pilot inlet port F. An exhaust muffler 14 may be provided at the second pilot outlet port D.

[0049] In this embodiment, the actuating ends of the first pilot valve 4 and the second pilot valve 5 are both provided with position mandrels. The position mandrels are slidably disposed in the air chamber of the cylinder 1 along the movement direction of the cylinder piston 11. When the cylinder piston 11 slides to its end position, the corresponding position mandrel is pushed to slide along with the cylinder piston 11, thereby pushing the valve core of the first pilot valve 4 or the second pilot valve 5 to move synchronously, so as to realize the actuation opening of the first pilot valve 4 or the second pilot valve 5. In this embodiment, the pilot valve core of the first pilot valve 4 and / or the second pilot valve 5 is provided with a pilot valve spring at one end facing away from the position mandrel. This spring is used to apply a reset force to the pilot valve core so that when the cylinder piston 11 moves away from the position mandrel, the position mandrel and the pilot valve core are reset under the reset force of the pilot valve spring. This resets the first pilot valve 4 and the second pilot valve 5, thereby cutting off the connection between the corresponding pilot valve outlet ports. That is, the reset of the first pilot valve 4 keeps the first reversing control port Y1 pressurized, and the reset of the second pilot valve 5 stops the exhaust from the first reversing control port Y1.

[0050] In this embodiment, the first pilot valve 4 and the second pilot valve 5 are respectively embedded in the end caps on both sides of the cylinder (e.g., Figure 5The right and left end caps shown can all be located on the outer wall of the cylinder 1 end cap, such as the first pilot inlet E and first pilot outlet C of the first pilot valve 4, and the second pilot inlet F and second pilot outlet D of the second pilot valve 5. Figure 5 As shown, the first pilot inlet E and the first pilot outlet C of the first pilot valve 4, and the second pilot inlet F of the second pilot valve 5 can be opened on the wall surface of the cylinder 1 facing the valve body mounting plate 7 (e.g., Figure 5 On the top wall surface shown, the second first outlet port D can be opened on the wall surface of the cylinder end cover facing away from the air chamber (e.g., the top wall surface shown). Figure 5 On the left wall shown. Of course, in other embodiments, the first pilot valve 4 and the second pilot valve 5 can also be respectively set on the two outer sides of the cylinder 1, and the reversing drive of the pilot valve core can be realized by the position mandrel passing through the cylinder end cover.

[0051] See also Figure 3 , Figure 4 , Figure 6 The valve body mounting plate 7 and the reversing valve 3 are stacked on the cylinder 1 in sequence. The first air chamber connection port G and the first working port A are connected through the first working passage 71 provided in the valve body mounting plate 7, and the second air chamber connection port H and the second working port B are connected through the second working passage 72 provided in the valve body mounting plate 7.

[0052] Specifically, the longitudinal section of the valve body mounting plate 7 is perpendicular to the thickness direction (e.g., Figure 3 The horizontal cross-section of the valve body mounting plate 7 (shown in the vertical direction) can be adapted to the corresponding cross-section of the cylinder 1 so that the valve body mounting plate 7 can be stacked on the top wall of the cylinder 1 and its outer contour can be flush with the outer contour of the cylinder 1. The valve body mounting plate 7 is provided with a first working passage 71 and a second working passage 72. In this embodiment, the first working passage 71 and the second working passage 72 can be arranged on the same cross-section of the valve body mounting plate 7 (e.g., in the vertical direction shown). Figure 3 The directional valve 3 is located on the cross-section shown in the figure. Of course, it can also be staggered, i.e., located in different cross-sections. In this embodiment, its location is not limited. The directional valve 3 can be stacked on the valve body mounting plate 7, and the valve body mounting plate 7, the directional valve 3, and the cylinder 1 can be fixed together with bolts; as shown in the figure. Figure 6As shown, the valve body mounting plate 7 is provided with a first mounting hole 73 and a second mounting hole 74, so as to realize the connection between the valve body mounting plate 7 and the cylinder 1, and between the cylinder 1 and the reversing valve 3, respectively, by means of connecting parts such as bolts; there can be four of each of the first mounting holes 73 and the second mounting hole 74, or other numbers. The first air chamber connection port G and the first working port A are connected by the first working passage 71 in the valve body mounting plate 7, and the second air chamber connection port H and the second working port B are connected by the second working passage 72 in the valve body mounting plate 7. This can replace the original external air pipe between the first air chamber connection port G and the first working port A, and between the second air chamber connection port H and the second working port B, reducing the arrangement of external air pipes. The valve body mounting plate 7, the reversing valve 3, and the cylinder 1 can be fixed together by bolts, which can ensure the tightness between the corresponding connection ports. To further ensure the airtightness between the corresponding connection ports of the valve body mounting plate 7, the reversing valve 3, and the cylinder 1, preferably, a sealing ring 8 is provided at the corresponding connection port between the valve body mounting plate 7 and the reversing valve 3 and / or between the valve body mounting plate 7 and the cylinder 1, to seal the connection port and prevent air leakage, thereby ensuring the working stability of the pneumatic hydraulic station.

[0053] See also Figure 5 The first pilot air inlet E and the main air inlet P are connected by a first pneumatic control communication passage 75 provided in the valve body mounting plate 7, and the first pilot air outlet C and the first reversing control port Y1 are connected by a second pneumatic control communication passage 76 provided in the valve body mounting plate 7.

[0054] Specifically, the valve body mounting plate 7 is provided with a first pneumatic control connection passage 75 and a second pneumatic control connection passage 76. The first pilot air inlet E and the main air inlet P are connected through the first pneumatic control connection passage 75, and the first pilot air outlet C and the first reversing control port Y1 are connected through the second pneumatic control connection passage 76. This replaces the original external air pipes between the first pilot air inlet E and the main air inlet P, and between the first pilot air outlet C and the first reversing control port Y1, further reducing the arrangement of external air pipes. This allows the reversing valve 3 to have only one air pipe connected to the air source to achieve the connection between the main air inlet P and the air source. All other air pipes are connected through the passages in the valve body mounting plate 7.

[0055] See also Figure 5The valve body mounting plate 7 has a third pneumatic control communication passage 77 that communicates with the second pneumatic control communication passage 75, for connecting to the second pilot air inlet F of the second pilot valve 5. Specifically, the valve body mounting plate 7 has a third pneumatic control communication passage 77 that communicates with the second pneumatic control communication passage 75. Of course, in other embodiments, the third pneumatic control communication passage 77 can also be connected to the second pilot air inlet F and the first reversing control port Y1 respectively. For example, the reversing valve 3 has a control passage that communicates with the first reversing control port Y1, and the third pneumatic control communication passage 77 and the second pneumatic control communication passage 76 are both connected to the first reversing control port Y1 through the control passage.

[0056] See also Figure 5 and Figure 6 An auxiliary exhaust valve may be provided inside the valve body mounting plate 7, that is, the auxiliary exhaust valve is embedded inside the valve body mounting plate 7. The valve body mounting plate 7 is provided with a first auxiliary exhaust valve cavity 78 and a first auxiliary exhaust port R. The first auxiliary exhaust valve cavity 78 is provided with a first auxiliary exhaust valve core 79, which is slidably disposed in the first auxiliary exhaust valve cavity 78. The two ends of the first auxiliary exhaust valve cavity 78 are respectively connected to a first auxiliary working passage 710 and a second auxiliary working passage 711, which are respectively connected to the first working passage 71 and the second working passage 72. When the first air chamber 12 is filled with air and the second air chamber 13 is exhausted, the first auxiliary exhaust valve core 78 slides to the second state, connecting the second auxiliary working passage 711 and the first auxiliary exhaust port R to provide auxiliary exhaust to the second air chamber 13, and cutting off the connection between the first auxiliary working passage 710 and the first auxiliary exhaust port R. When the second air chamber 13 is filled with air and the first air chamber 12 is exhausted, the first auxiliary exhaust valve core 78 slides to the first state (e.g. Figure 5 (as shown in the diagram), connect the first auxiliary working passage 710 and the first auxiliary exhaust port R to assist in exhausting the first air chamber 12, and disconnect the connection between the second auxiliary working passage 711 and the first auxiliary exhaust port R.

[0057] In another embodiment, an auxiliary exhaust valve can be installed on one side of the valve body mounting plate 7; the valve body mounting plate 7 has a first auxiliary communication passage (not shown in the figure) communicating with the first working passage 71, for connecting the third working port N of the auxiliary exhaust valve; the valve body mounting plate 7 has a second auxiliary communication passage communicating with the second working passage 72, for connecting the fourth working port O. The auxiliary exhaust valve is used to connect the other cylinder cavity to the outside when one cylinder cavity is receiving air and the other cylinder cavity is venting air, so as to provide auxiliary exhaust for the other cylinder cavity.

[0058] Specifically, the auxiliary exhaust valve is connected to the first working passage 71 and the second working passage 72, respectively, that is, connected to the first air chamber 12 and the second air chamber 13. When the first air chamber 12 is receiving air and the second air chamber 13 is venting air, the auxiliary exhaust valve connects the second air chamber 13 to the outside to assist in venting the second air chamber 13, so as to avoid the cylinder piston 11 from jamming due to insufficient intake pressure in the first air chamber 12. That is, the auxiliary exhaust valve cooperates with the second working port B of the reversing valve 3 to perform coordinated venting of the second air chamber 13. When the second air chamber 13 is receiving air and the first air chamber 12 is venting air, the auxiliary exhaust valve connects the first air chamber 12 to the outside to assist in venting the first air chamber 12. Auxiliary exhaust is performed to prevent the cylinder piston 11 from jamming due to insufficient intake pressure in the second air chamber 13. Specifically, the auxiliary exhaust valve works in conjunction with the first working port A of the reversing valve 3 to exhaust gas from the first air chamber 12. Furthermore, when the cylinder piston 11 jams, the auxiliary exhaust valve discharges the gas in the first air chamber 12, allowing the cylinder piston 11 to move towards the cylinder end cap on the side of the first air chamber 12 under the action of the air pressure in the second air chamber 13. This triggers the first pilot valve 4, causing the reversing valve core 33 to switch to a state where the first air chamber 12 is intake and the second air chamber 13 is exhaust, so that the cylinder piston 11 moves to the right. The auxiliary exhaust valve discharges gas from the first air chamber 12 or the second air chamber 13, allowing the cylinder piston 11 to move towards the cylinder end cover on the side of the first air chamber 12 or the second air chamber 13 under the action of the air pressure in the second air chamber 13 or the first air chamber 12. This triggers the pilot valve, causing the directional valve core 33 to switch to a state where the other cylinder chamber is receiving air and the other cylinder chamber is venting air. Furthermore, when the cylinder piston 11 is stuck, the auxiliary exhaust valve discharges gas from the second air chamber 13, allowing the cylinder piston 11 to move towards the cylinder end cover on the side of the second air chamber 13 under the action of the air pressure in the first air chamber 12. This triggers the second pilot valve 5, causing the directional valve core 33 to switch to a state where the second air chamber 13 is receiving air and the first air chamber 12 is venting air, causing the cylinder piston 11 to move to the left.

[0059] In this embodiment, when the directional valve core 33 is in the neutral position, allowing air to enter one of its chambers and not exhausting from the other chamber, that is, when the directional valve 3 is not in the correct position, the auxiliary exhaust valve exhausts air from the other cylinder chamber.

[0060] Specifically, when the first air chamber 12 is filled with air and the second air chamber 13 is filled with air, the auxiliary exhaust valve connects the second air chamber 13 to the outside until the second air chamber 13 is filled with air and the first air chamber 12 is filled with air. Therefore, it can be seen that from the moment the reversing valve 3 connects the first working port A with the main air inlet P and the second working port B with the valve body exhaust port, until the second working port B connects with the main air inlet P and the first working port A connects with the valve body exhaust port, the auxiliary exhaust valve connects the second air chamber 13 to the outside. When the reversing valve core 33 reverses to the left to the neutral position, that is, when the reversing valve core 33 is in the neutral position, the second working port B is just connected to the main air inlet P and the first working port A is not connected to the valve body exhaust port, that is, when the second air chamber 13 is intake and the first air chamber 12 is not exhaust, the gas in the second air chamber 13 can be discharged through the auxiliary exhaust valve, especially the intake air in the second air chamber 13 can be discharged. The first working port A is not connected to the valve body exhaust port, so that the air pressure in the first air chamber 12 is maintained, so that the cylinder piston 11 can move towards the cylinder end cover of the second air chamber 13 under the action of the air pressure in the first air chamber 12 (e.g., Figure 6 (As shown, it moves to the right), thereby triggering the first pilot valve 4, so that the reversing valve 3 is switched into position, controlling the reversing valve core 33 to continue moving to the left to switch, so as to connect the second working port B with the main air inlet P, and connect the first working port A with the valve body exhaust port, switching to the state where the second air chamber 13 is intake and the first air chamber 12 is exhaust. When the second air chamber 13 is intake and the first air chamber 12 is exhaust, it can continue until the first air chamber 12 is intake and the second air chamber 13 is exhaust. The auxiliary exhaust valve connects the first air chamber 12 with the outside. Therefore, it can be seen that from the moment the reversing valve 3 connects the second working port B with the main intake port P and the first working port A with the valve body exhaust port, until the first working port A connects with the main intake port P and the second working port B connects with the valve body exhaust port, the auxiliary exhaust valve connects the first air chamber 12 to the outside. In particular, when the reversing valve core is in the neutral position, so that the first working port A is just connected to the main intake port P and the second working port B is not connected to the valve body exhaust port, that is, when the first air chamber 12 is intake and the second air chamber 13 is not exhaust, the gas in the first air chamber 12 can be discharged through the auxiliary exhaust valve, especially the intake air in the first air chamber 12 can be discharged. The second working port B is not connected to the valve body exhaust port, so that the air pressure in the second air chamber 13 is maintained, so that the cylinder piston 11 can move towards the cylinder end cover on the side of the first air chamber 12 under the action of the air pressure in the second air chamber 13 (e.g., Figure 3 (as shown, it moves to the left), thereby triggering the second pilot valve 5, so that the reversing valve 3 is switched to the position, controlling the reversing valve core 33 to move to the right to switch, so as to connect the first working port A with the main air inlet P, and connect the second working port B with the valve body exhaust port, switching to the state of the first air chamber 12 intake and the second air chamber 13 exhaust.

[0061] See Figures 8 to 9The figure illustrates a preferred structure of the auxiliary exhaust valve provided in this embodiment. As shown, the auxiliary exhaust valve 9 includes: an auxiliary exhaust valve housing 91 and a second auxiliary exhaust valve core 92 disposed on one side of the valve body mounting plate 7; wherein, the auxiliary exhaust valve housing 91 is provided with a second auxiliary exhaust chamber 911, a third working port N, a fourth working port O, and a second auxiliary exhaust port S; the second auxiliary exhaust valve core 92 is disposed within the second auxiliary exhaust valve chamber 91 in a slidable manner; the third working port N and the fourth working port O are respectively connected to both ends of the second auxiliary exhaust valve chamber 911 (e.g., ...). Figure 8 The left and right ends (as shown) are connected. When air enters the first air chamber 12 and exhausts from the second air chamber 13, the second auxiliary exhaust valve core 92 slides to the position shown. Figure 9 The fourth state shown connects the fourth working port O to the second auxiliary exhaust port S, and disconnects the connection between the third working port N and the second auxiliary exhaust port S; when air enters the second air chamber 13 and exhausts from the first air chamber 12, it is in the state shown. Figure 8 The third state shown connects the third working port N with the second auxiliary exhaust port S, and disconnects the fourth working port O from the second auxiliary exhaust port S.

[0062] Specifically, the auxiliary exhaust valve housing 91 is provided with a second auxiliary exhaust valve chamber 911 inside, and the second auxiliary exhaust valve chamber 911 extends along its length direction (e.g., Figure 8 Arranged along the length direction shown, and with open ends, the left and right open ends of the second auxiliary exhaust valve cavity 911 can respectively serve as the third working port N and the fourth working port O. Of course, in other embodiments, the two ends of the second auxiliary exhaust valve cavity 911 can also be closed ends, which can be sealed by the first plug 93. The two ends of the second auxiliary exhaust valve cavity 911 are respectively connected to the third working port N and the fourth working port O to allow air to enter and exit the second auxiliary exhaust valve cavity 911. The second auxiliary exhaust valve core 92 is slidably disposed in the second auxiliary exhaust valve cavity 911 so as to control the air pressure at both ends of the second auxiliary exhaust valve cavity 911 through the air entering and exiting the third working port N and the fourth working port O, thereby pushing the second auxiliary exhaust valve core 92 to slide left and right, so as to slide to... Figure 8 The first state shown or as Figure 9 The second state is shown.

[0063] In this embodiment, the first plug 93 not only seals the end of the second auxiliary exhaust valve chamber 911, but also acts as a limiting part to limit and support the second auxiliary exhaust valve core 92, so that the second auxiliary exhaust valve core 92 is in the first state and the second state respectively. Figure 9As shown, when the second auxiliary exhaust valve core 92 slides to the right side and presses against the left side wall of the right first plug 93, the second auxiliary exhaust valve core 92 is in the second state, that is, the right first plug 93 provides limiting support for the second auxiliary exhaust valve core 92 in the second state; as shown Figure 8 As shown, when the second auxiliary exhaust valve core 92 slides to the left and presses against the right side wall of the left first plug 93, the second auxiliary exhaust valve core 92 is in the first state, that is, the left first plug 93 limits and supports the second auxiliary exhaust valve core 92 in the first state. Of course, the first plug 93 can also be other structures, and no limitation is made on it in this embodiment.

[0064] See also Figure 8 and Figure 9 The second auxiliary exhaust chamber 911 includes: a first auxiliary push section 9111, an auxiliary exhaust section 9112, and a second auxiliary push section 9113 arranged sequentially.

[0065] The first auxiliary push section 9111 and the second auxiliary push section 9113 are respectively connected to the first working port A and the second working port B. The auxiliary exhaust section 113 is connected to the outside or to the reversing exhaust port. The second auxiliary exhaust valve core 92 is slidably disposed in the auxiliary exhaust section 9112.

[0066] Specifically, the first auxiliary push section 9111, the auxiliary exhaust section 9112, and the second auxiliary push section 9113, from left to right (relative to...) Figure 8 (As shown in the diagram) The auxiliary exhaust section 9112 is sequentially arranged such that its outer diameter is adapted to that of the second auxiliary exhaust valve core 92, allowing the second auxiliary exhaust valve core 92 to slide against the cavity wall of the auxiliary exhaust section 9112. The auxiliary exhaust section 9112 guides the sliding of the second auxiliary exhaust valve core 92. The diameters of the first auxiliary push section 9111 and the second auxiliary push section 9113 are the same and larger than the diameter of the auxiliary exhaust section 9112 to avoid interfering with the movement of the second auxiliary exhaust valve core 92. The cavity walls of the first auxiliary push section 9111, the second auxiliary push section 9113, and the auxiliary exhaust section 9112 are respectively provided with a third working port N, a fourth working port O, and a second auxiliary exhaust port S, which can respectively realize the intake and exhaust of the first auxiliary push section 9111 and the second auxiliary push section 9113, thereby pushing the second auxiliary exhaust valve core 92 to slide left and right, so that the second auxiliary exhaust valve core 92 can slide with the intake and exhaust of the first working port A and the second working port B, i.e., position adjustment.

[0067] When the main air intake P is connected to the second working port B and the first working port A is connected to the valve body exhaust port, the second auxiliary exhaust valve core 93 slides to the first state where the first auxiliary push section 9111 and the auxiliary exhaust section 9112 are connected under the action of the air pressure in the second auxiliary push section 9113. When the main air intake P is connected to the first working port A and the second working port B is connected to the valve body exhaust port, the second auxiliary exhaust valve core 92 slides to the second state where the second auxiliary push section 9113 and the auxiliary exhaust section 9112 are connected under the action of the air pressure in the first auxiliary push section 9111.

[0068] In this embodiment, the auxiliary exhaust valve housing 91 along its width direction (e.g. Figure 9 (In the vertical direction shown) there are first processing channels 912 and 913 respectively connected to the first auxiliary pushing section 9111 and the second auxiliary pushing section 9113, and respectively connected to the third working port N and the fourth working port O. Specifically, the first processing channels 912 and 913 are through-hole structures, with one end serving as the third working port N and the fourth working port O, and the other end provided with a second plug 94 for sealing.

[0069] See also Figures 9 to 11 The second auxiliary exhaust valve core 92 has a notch 921 at its middle position on the outer peripheral wall. The notch 921 can form a gap channel with the inner wall of the auxiliary exhaust section 9112 and communicate with the auxiliary exhaust port S.

[0070] Specifically, a notch 921 is provided on the outer peripheral wall of the second auxiliary exhaust valve core 92 at the middle position of the second auxiliary exhaust valve core 92, which is arranged around the circumference of the second auxiliary exhaust valve core 92. That is, the notch 921 is a circumferential notch, and the notch 921 can form an annular gap channel communicating with the auxiliary exhaust port S between the notch 921 and the inner wall of the auxiliary exhaust section 9112. The circumferential notch design allows the second auxiliary exhaust valve core 92 to sequentially form a first large-diameter valve core 922, a small-diameter valve core 923, and a second large-diameter valve core 924 from one end to the other. The outer diameters of the first large-diameter valve core 922 and the second large-diameter valve core 924 are the same and larger than the outer diameter of the small-diameter valve core 923. In particular, the outer diameters of the first large-diameter valve core 922 and the second large-diameter valve core 924 are adapted to the diameter of the auxiliary exhaust section 9112. That is, the outer walls of the first large-diameter valve core 922 and the second large-diameter valve core 924 can slide and connect with the inner wall of the auxiliary exhaust section 9112, and an annular gap channel can be formed between the outer wall of the small-diameter valve core 923 and the inner wall of the auxiliary exhaust section 9112. The length of this annular gap channel (e.g., Figure 9The length of the small-diameter valve core 923 (as shown in the length direction) can be adapted to the sliding stroke of the second auxiliary exhaust valve core 92, especially greater than or equal to the sliding stroke of the second auxiliary exhaust valve core 92, so that the annular gap channel is always connected to the auxiliary exhaust port S. That is, when the second auxiliary exhaust valve core 92 slides to any position, the annular gap channel is always connected to the auxiliary exhaust port S, and the annular gap channel is not connected to the first auxiliary push section 9111 or the second auxiliary push section 9113.

[0071] See also Figure 11 The notch 921 has a first connecting groove 925 and a second connecting groove 926 on both sides, both of which are connected to the notch 921. When the second auxiliary exhaust valve core 92 is in the first state, the first connecting groove 925 is connected to the first auxiliary push section 9111, and the first connecting groove 925 and the gap channel combine to form the first auxiliary exhaust passage. When the second auxiliary exhaust valve core 92 is in the second state, the second connecting groove 926 is connected to the second auxiliary push section 9113, and the second connecting groove 926 and the gap channel combine to form the second auxiliary exhaust passage.

[0072] Specifically, on the second auxiliary exhaust valve core 92, on both sides of the notch 921 (as shown in the image) Figure 11 The left and right sides (as shown) are respectively provided with a first connecting groove 925 and a second connecting groove 926, and both the first connecting groove 925 and the second connecting groove 926 are connected to the notch 921; the first connecting groove 925 and the second connecting groove 926 are respectively provided on the first large-diameter valve core 922 and the second large-diameter valve core 924. There can be multiple first connecting grooves 925 and second connecting grooves 926, and they are evenly arranged along the circumference of the first large-diameter valve core 922 and the second large-diameter valve core 924. In this embodiment, four are used as an example for illustration. Other numbers can be used, and no limitation is made on them in this embodiment.

[0073] like Figure 9 As shown, when the second auxiliary exhaust valve core 92 is in the first state, part of the first connecting groove 925 is located in the auxiliary exhaust section 9112, and the other part is located in the first auxiliary push section 9111. It connects the first auxiliary push section 9111 with the annular gap channel. The first connecting groove 925 and the annular gap channel combine to form the first auxiliary exhaust passage, realizing the connection between the auxiliary exhaust port S and the first auxiliary push section 9111, and further realizing the connection between the auxiliary exhaust port S and the third working port N. This allows the intake air from the first working port A to flow from the second processing channel 913 through the third working port N into the first auxiliary push section 9111, and then from the first connecting groove 925 into the annular gap channel, and finally out from the auxiliary exhaust port S. Simultaneously, the second connecting groove 926 is entirely located within the auxiliary exhaust section 9112, cutting off the connection with the second auxiliary push section 9113. Figure 7As shown, when the second auxiliary exhaust valve core 92 is in the second state, part of the second connecting groove 926 is located in the auxiliary exhaust section 9112, and the other part is located in the second auxiliary push section 9113. This connects the second auxiliary push section 9113 with the annular gap channel. The second auxiliary push section 9113 and the annular gap channel together form the second auxiliary exhaust passage, connecting the auxiliary exhaust port S with the second auxiliary push section 9113. This, in turn, connects the auxiliary exhaust port S with the fourth working port O, allowing the intake air from the second working port B to flow from the first processing channel 912 through the fourth working port O into the second auxiliary push section 9113, and then from the second connecting groove 926 into the annular gap channel, and finally exit from the auxiliary exhaust port S. Simultaneously, the first connecting groove 925 is entirely located within the first auxiliary push section 9111, cutting off its connection with the first auxiliary push section 9111.

[0074] In this embodiment, the arrangement of the first connecting groove 925 and the second connecting groove 926 makes the reversing sliding smoother and ensures the balance and stability of each cavity.

[0075] See also Figure 11 To prevent gas leakage on the cut-off side, preferably, a first sealing ring 927 and a second sealing ring 928 are fitted on the second auxiliary exhaust valve core 92. When the second auxiliary exhaust valve core 92 is in the first state, the second sealing ring 928 is located between the fourth working port O and the auxiliary exhaust port S, cutting off the second auxiliary exhaust passage. When the second auxiliary exhaust valve core 92 is in the second state, the first sealing ring 38 is located between the third working port N and the auxiliary exhaust port S, cutting off the first auxiliary exhaust passage.

[0076] Specifically, the first sealing ring 927 and the second sealing ring 928 can be respectively fitted onto the first large-diameter valve core 922 and the second large-diameter valve core 924. The first sealing ring 927 and the second sealing ring 928 can be adapted to the inner wall of the auxiliary exhaust section 9112 to seal the gaps between the first large-diameter valve core 922, the second large-diameter valve core 924 and the inner wall of the auxiliary exhaust section 9112. When the second auxiliary exhaust valve core 92 is in the first state, the second sealing ring 928 and the second connecting groove 926 are both located inside the auxiliary exhaust section 9112; when the second auxiliary exhaust valve core 92 is in the second state, the first sealing ring 927 and the first connecting groove 925 are located inside the auxiliary exhaust section 9112.

[0077] In this embodiment, a circumferential orifice is provided between the inner wall of the second auxiliary exhaust valve core 92 and the inner wall of the auxiliary exhaust section 9112. When the second auxiliary exhaust valve core 92 is in the first state, the second sealing ring 928 is located in the circumferential orifice between the second auxiliary exhaust valve core 92 and the inner wall of the auxiliary exhaust section 9112 and is positioned between the third working port N and the auxiliary exhaust port S, performing an internal seal. When the second auxiliary exhaust valve core 92 is in the second state, the first sealing ring 927 is located in the circumferential orifice between the inner wall of the auxiliary exhaust section 9112 and the second auxiliary exhaust valve core 92 and is positioned between the fourth working port O and the auxiliary exhaust port S, forming an internal seal. In this embodiment, the first sealing ring 927 and the second sealing ring 928 are respectively disposed on the left and right sides of the first connecting groove 925 and the second connecting groove 926 (relative to...). Figure 11 (Regarding the location shown).

[0078] like Figure 9 As shown, when the second auxiliary exhaust valve core 92 is in the first state, the second sealing ring 928 and the second connecting groove 926 are both located inside the auxiliary exhaust section 9112 and positioned to the right of the auxiliary exhaust port S. The outer wall of the sealing ring 928 presses against the inner wall of the auxiliary exhaust section 9112, and the second sealing ring 928 performs an internal seal. At the same time, the first sealing ring 927 is located inside the first auxiliary push section 9111, that is, there is a gap between the first sealing ring 927 and the inner wall of the first auxiliary push section 9111. The first connecting groove 925 is partially disposed inside the first auxiliary push section 9111. The auxiliary exhaust port S is connected to the first auxiliary push section 9111 through the first connecting groove 925 and the annular gap channel, that is, the auxiliary exhaust port S is connected to the third working port N.

[0079] Similarly, such as Figure 10 As shown, when the second auxiliary exhaust valve core 92 is in the second state, the first sealing ring 927 and the first connecting groove 925 are located in the auxiliary exhaust section 9112 and are both placed on the left side of the auxiliary exhaust port S. The outer wall presses against the auxiliary exhaust section 9112 and is placed on the right side of the auxiliary exhaust port S. The first sealing ring 927 performs internal sealing. The second sealing ring 928 is located in the second auxiliary push section 9113.

[0080] In this embodiment, the valve body mounting plate 7 is embedded with a first auxiliary exhaust valve core 79. The valve body mounting plate 7, as a valve shell, and the first auxiliary exhaust valve core 79 are combined to form an auxiliary exhaust valve. Its structure and principle can be referred to the structure and principle of the auxiliary exhaust valve 9. The two can be referenced to each other. The structure and working principle of the auxiliary exhaust valve 9 will not be described in detail here.

[0081] See also Figure 3 and Figure 4The valve body mounting plate 7 is provided with a first working connection port L and a first air chamber connection port M, both of which are connected to the first working passage 71, for docking and connecting with the first working port A and the first air chamber connection port G respectively; the valve body mounting plate 7 is provided with a second working connection port X and a second air chamber connection port T, both of which are connected to the second working passage 72, for docking and connecting with the second working port B and the second air chamber connection port H respectively.

[0082] Specifically, the first working connection port L and the second working connection port X are located on the first wall surface of the valve body mounting plate 7 (e.g., Figure 3 On the top wall shown), the first air chamber connection port M and the second air chamber connection port T are located on the second wall surface of the valve body mounting plate 7 (as shown). Figure 3 The bottom wall (as shown) is designed to facilitate communication with the corresponding ports on the valve body mounting plate 7 above the reversing valve 3 and below the cylinder 1; wherein the first wall surface and the second wall surface are arranged opposite to each other. In this embodiment, the first working connection port L and the first air chamber connection port M can be sealed and connected to the first working port A and the first air chamber connection port G, respectively. A sealing ring 8 is provided at each corresponding connection port, that is, a sealing ring 8 can be provided at the position where the first working connection port L is sealed and connected to the first working port A, and a sealing ring 8 can be provided at the position where the first air chamber connection port M is sealed and connected to the first air chamber connection port G, to ensure the airtightness of the connection.

[0083] See also Figure 5 The valve body mounting plate 7 is provided with a first air control port Z1 and an air control vent U, both of which are connected to the first air control communication passage 75, for connecting and communicating with the first pilot air inlet E and the main air outlet Q of the reversing valve 3, respectively.

[0084] Specifically, the first pneumatic control port Z1 and the pneumatic control air inlet U are respectively located on two opposite outer wall surfaces of the valve body mounting plate 7 (e.g., Figure 5 On the bottom and top walls shown, the first pilot air inlet E on the cylinder 3 and the main air outlet Q of the reversing valve 3 are respectively connected and aligned. Of course, they can also be set on other outer wall surfaces, and this embodiment does not limit them in any way. In this embodiment, the first air control port Z1 and the air control vent U are respectively sealed and connected to the first pilot air inlet E and the main air outlet Q of the reversing valve 3. A sealing ring 8 is provided at each corresponding connection point. That is, a sealing ring 8 can be provided at the position where the first air control port Z1 is sealed and connected to the first pilot air inlet E, and a sealing ring 8 can be provided at the position where the air control vent U is sealed and connected to the main air outlet Q, to ensure the airtightness of the connection.

[0085] See also Figure 5The valve body mounting plate 7 is provided with a second pneumatic control port Z2 and a first reversing connection port V, both of which are connected to the second pneumatic control communication passage 76. These are used to connect with the first pilot outlet port C and the pneumatic control port Y, respectively, so that when the first pilot valve 4 is triggered to open, air is injected into the pneumatic control chamber Y of the reversing valve 3, so that the reversing valve core 33 moves in the direction away from the pneumatic control chamber (e.g., ...). Figure 3 (As shown, the movement to the left) slides to change direction.

[0086] Specifically, the second pneumatic control port Z2 and the first reversing connection port V are respectively located on two opposite outer wall surfaces of the valve body mounting plate 7 (e.g., Figure 5 On the bottom and top walls shown, the first outlet air port C and the air control port Y on the cylinder 3 are respectively connected and aligned. Of course, they can also be set on other outer wall surfaces, and this embodiment does not limit them in any way. In this embodiment, the second air control port Z2 and the first reversing connection port V are respectively sealed and connected to the first outlet air port C and the air control port Y. A sealing ring 8 is provided at each corresponding connection point. That is, a sealing ring 8 can be provided at the position where the second air control port Z2 is sealed and connected to the first outlet air port C, and a sealing ring 8 can be provided at the position where the first reversing connection port V is sealed and connected to the air control port Y, to ensure the airtightness of the connection.

[0087] See also Figure 5 The valve body mounting plate 7 is also provided with a third pneumatic control port Z3, which is connected to the third pneumatic control communication passage 77, for connecting to the second pilot air inlet F. Specifically, the third pneumatic control port Z3 is located on the bottom wall of the valve body mounting plate 7, and it is sealed and connected to the second pilot air inlet F. A sealing ring 8 can be provided at the position where the third pneumatic control port Z3 is sealed and connected to the second pilot air inlet F to ensure the airtightness of the connection.

[0088] In this embodiment, the third pneumatic control port Z3, the first pneumatic control port Z1, and the second pneumatic control port Z2 on the valve body mounting plate 7 are disposed on the same wall surface of the valve body mounting plate 7 (e.g., Figure 5 On the bottom wall shown), and the pneumatic vent U and the first reversing connection V on the valve body mounting plate 7 are located on another wall surface of the valve body mounting plate 7 (as shown). Figure 5 On the top wall shown, so as to seal and connect with the corresponding ports on the cylinder 1 below the valve body mounting plate 7 and the reversing valve 3 above it.

[0089] Of course, in other embodiments, the reversing valve 3 can also have other structures, such as Figures 12 to 14 As shown, the directional valve 3 can also be the directional valve disclosed in Chinese Publication No. CN119163771A, which has the same structure and principle as the above embodiment. The two are mutually referenced. The following is a detailed description of the differences between this directional valve and the above directional valve, as well as the differences between the different components of the corresponding hydraulic station.

[0090] See also Figures 12 to 14 In this embodiment, the first working port A and the second working port B are staggered, i.e., set on different cross sections, so the first working passage 71 and the second working passage 72 are also staggered. The first auxiliary exhaust valve cavity 78 can be set in the same cross section as the second working passage 72, and the first auxiliary exhaust valve core 79 is limited and supported by two limiting plates 712 in the first auxiliary exhaust valve cavity 78. Furthermore, the cavities on both sides of the limiting plate 712 are connected through the vent holes on the limiting plate 712. The first reversing control port Y1 of the reversing valve 3 is connected to the left large cavity, i.e., the second pneumatic reversing cavity 35. The bottom wall of the reversing valve 3 is provided with a control connection port Y2. The reversing valve 3 is provided with a first pneumatic control passage 36, which is connected to the control connection port Y2 and the second pneumatic reversing cavity 35 respectively. The control connection port Y2 is sealed and connected to the first reversing connection port V. The bottom wall of the reversing valve 3 is provided with a second reversing connection port V2, and the reversing valve 3 is also provided with a second pneumatic control passage 37, which is connected to the second reversing connection port V2 and the first pneumatic control passage 36 respectively. In this embodiment, the valve body mounting plate 7 may be provided with a third reversing connection port V3 on its top wall, which is connected to the third pneumatic control port Z3 through a third pneumatic control communication passage 77. The third reversing connection port V3 and the second reversing connection port V2 are aligned and sealed, that is, sealed and connected.

[0091] Of course, in other embodiments, the reversing valve 3 can also have other structures, and the reversing valve 3 is... Figure 1 The dual-sided pneumatically controlled directional valve shown means that, for example... Figure 15 As shown, the reversing valve cavity has reversing control ports on both sides of the reversing valve core, namely the first reversing control port Y1 and the second reversing control port Y3. In this embodiment, the valve body mounting plate 7 is provided with a first pneumatic control connection passage 75, a second pneumatic control connection passage 76, a third pneumatic control connection passage 77, and a fourth pneumatic control connection passage 713; the connection method of the first pneumatic control connection passage 75 and the second pneumatic control connection passage 76 is the same as in the above embodiment, while the connection method of the third pneumatic control connection passage and the fourth pneumatic control connection passage is different from that in the above embodiment. In this embodiment, the third pneumatic control connection passage 77 and the fourth pneumatic control connection passage 713 can refer to the connection of the first pneumatic control connection passage 75 and the second pneumatic control connection passage 75. Specifically, the third pneumatic control connection passage 77 connects the second pilot air inlet F and the main air inlet P of the reversing valve, or, as shown... Figure 15As shown, the third pneumatic control connection passage 77 connects the second pilot air inlet F to the first pneumatic control connection passage 75, and the fourth pneumatic control connection passage 713 connects the second pilot air outlet D to the second reversing control port Y2 of the reversing valve 3. The structures of the first pilot valve 4 and the second pilot valve 5 can refer to the structures in the background art. The first pilot valve 4 and the second pilot valve 5 are provided with pilot exhaust ports and pilot return springs 10. When the second pilot valve 5 is triggered to open, that is, when the cylinder piston 11 moves to the left, the second pilot valve 5 is triggered to conduct. Connecting the second pilot air outlet D and the second pilot air inlet F enables the main air inlet P to connect with the second reversing control port Y3. When the cylinder piston 11 moves to the right and away from the second pilot valve 5, the triggering of the second pilot valve 5 is released, allowing the second pilot valve 5 to reset under the reset force of the pilot reset spring 10, cutting off the connection between the second pilot air outlet D and the second pilot air inlet F, and connecting the second pilot air outlet D with the pilot exhaust port R1 to exhaust air from the second reversing control port Y3, thereby enabling the reversing valve 3 to reverse when air enters through the first reversing control port Y1. The valve body mounting plate 7 has a fourth reversing connection port V4 on its top wall and a fourth pneumatic control port Z4 on its bottom wall. Both the fourth reversing connection port V4 and the fourth pneumatic control port Z4 are connected to the fourth pneumatic control communication passage 713, and the fourth reversing connection port V4 and the fourth pneumatic control port Z4 are aligned and sealed to the second reversing control port Y3 and the second pilot air outlet D, respectively.

[0092] When the first pilot valve 4 is open, air is injected into the first reversing control port Y1 through the main air inlet P, and air is vented from the first reversing control port Y1 when the first pilot valve 4 is reset. When the second pilot valve 2 is open, air is injected into the second reversing control port Y2 through the main air inlet P, and air is vented from the second reversing control port Y2 when the second pilot valve 5 is reset. The air path between the first pilot outlet C and the first reversing control port Y1 of the reversing valve 3 is replaced by the third pneumatic connection passage 77, and the air path between the second pilot outlet D and the second reversing control port Y2 of the reversing valve 3 is replaced by the fourth pneumatic connection passage 713.

[0093] In other embodiments, such as Figure 15 As shown, the reversing valve 3 and the valve body mounting plate 7 can be an integral structure. In this embodiment, the specific structure of the reversing valve 3 and the valve body mounting plate 7 can be referred to the structure of the corresponding split embodiment described above. This embodiment will not repeat the details here.

[0094] In summary, the valve body mounting plate and pneumatic hydraulic station provided in this embodiment connect the first working port A of the directional valve 3 to the first air chamber connection port G of the cylinder 1 that connects to the first air chamber 12 via the first working passage 71 provided in the valve body mounting plate 7, and connect the second working port B of the directional valve 3 to the second air chamber connection port H of the cylinder 1 that connects to the second air chamber 13 via the second working passage 72. This replaces the original external air pipes between the first air chamber connection port G and the first working port A, and between the second air chamber connection port H and the second working port B, reducing the arrangement of external air pipes, improving the airtightness of the connection, reducing air leakage points, improving the insufficient working stability of the hydraulic station, and enabling the cylinder to continuously supply oil. This solves the problem that the hydraulic station has many air passages, which makes the work site messy and prone to incorrect connections, and the poor airtightness makes it prone to air leakage points, resulting in insufficient working stability of the hydraulic station and the inability of the cylinder to continuously supply oil.

[0095] Furthermore, the first pilot inlet E of the first pilot valve 4 and the main outlet Q of the directional valve 3 are connected through the first pneumatic connection passage 75 set in the valve body mounting plate 7. The first pilot outlet C of the first pilot valve 4 and the first directional control port Y1 of the directional valve 3 are connected through the second pneumatic connection passage 76 set in the valve body mounting plate 7. The second pilot inlet F of the second pilot valve 5 is connected through the third pneumatic connection passage 77 set in the valve body mounting plate 7. This replaces the original external air pipe between the pilot valve and the directional valve, further reducing the arrangement of external air pipes. This means that only the air pipe between the air source and the main outlet P needs to be installed on the directional valve 3, further improving the airtightness of the connection, reducing leakage points, and further improving the working stability of the hydraulic station.

[0096] Furthermore, an auxiliary exhaust valve is provided inside or on one side of the valve body mounting plate 7, which is connected to the first working passage 71 and the second working passage 72, respectively, to connect to the two cylinder chambers. When one cylinder chamber is receiving air and the other cylinder chamber is venting air, the other cylinder chamber is connected to the outside to assist in venting air from the other cylinder chamber. This allows the cylinder piston 11 to move towards the cylinder end cover on the side of the other cylinder chamber under the action of the air pressure in the cylinder chamber, thereby triggering the pilot valve to reverse the valve core of the reversing valve 3 until the corresponding exhaust port and air inlet are connected. Especially when the air source pressure drops or fluctuates greatly, the reversing valve 3 can switch to the state where the other cylinder chamber is receiving air and the other cylinder chamber is venting air, avoiding cylinder jamming. That is, it avoids the occurrence of cylinder jamming, reversing valve jamming, tooling loss of pressure leading to workpiece not being clamped tightly, tool collision, etc.

[0097] It should be noted that in the description of this utility model, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the direction or positional relationship are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0098] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0099] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A valve body mounting plate for connecting a cylinder and a directional valve, characterized in that, The valve body mounting plate is provided with a first working passage for connecting the first working port of the reversing valve with the first air chamber connection port on the cylinder that connects to the first air chamber. The valve body mounting plate is provided with a second working passage for connecting the second working port of the reversing valve with the second air chamber connection port on the cylinder that connects to the second air chamber.

2. The valve body mounting plate according to claim 1, characterized in that, The valve body mounting plate is provided with a first working connection port and a first air chamber connection port, both of which are connected to the first working passage, for connecting and communicating with the first working port and the first air chamber connection port respectively. The valve body mounting plate is provided with a second working connection port and a second air chamber connection port, both of which are connected to the second working passage, for connecting and communicating with the second working port and the second air chamber connection port respectively.

3. The valve body mounting plate according to claim 1, characterized in that, The cylinder is provided with a first pilot valve, which is provided with a first pilot inlet and a first pilot outlet. The first pilot valve is used to trigger the first pilot valve when the cylinder piston slides to the first end to connect the first pilot inlet and the first pilot outlet. The valve body mounting plate is provided with a first pneumatic control connection passage and a second pneumatic control connection passage; the first pneumatic control connection passage connects the first pilot air inlet to the main air inlet of the reversing valve, and the second pneumatic control connection passage connects the first pilot air outlet to the first reversing control port of the reversing valve.

4. The valve body mounting plate according to claim 3, characterized in that, The cylinder is provided with a second pilot valve, which is provided with a second pilot inlet and a second pilot outlet. The second pilot valve is used to trigger the second pilot valve when the cylinder piston slides to the second end to connect the second pilot inlet and the second pilot outlet. The valve body mounting plate is provided with a third pneumatic control connection passage and a fourth pneumatic control connection passage; the third pneumatic control connection passage connects the second pilot air inlet to the main air inlet of the reversing valve, or the third pneumatic control connection passage connects the second pilot air inlet to the first pneumatic control connection passage, and the fourth pneumatic control connection passage connects the second pilot air outlet to the second reversing control port of the reversing valve.

5. The valve body mounting plate according to claim 3, characterized in that, The cylinder is provided with a second pilot valve, which is provided with a second pilot inlet and a second pilot outlet for connecting to the outside. The second pilot valve is triggered when the cylinder piston slides to the second end to connect the second pilot inlet and the second pilot outlet. The valve body mounting plate is provided with a third pneumatic control connection passage; the third pneumatic control connection passage connects the second pilot air inlet and the second pneumatic control connection passage, or the third pneumatic control connection passage connects the second pilot air inlet and the first reversing control port.

6. The valve body mounting plate according to claim 1, characterized in that, The valve body mounting plate is provided with a first auxiliary exhaust valve chamber and a first auxiliary exhaust port. The first auxiliary exhaust valve chamber is provided with a first auxiliary exhaust valve core, which is slidably disposed in the first auxiliary exhaust valve chamber. The first auxiliary exhaust valve chamber is connected to a first auxiliary working passage and a second auxiliary working passage at both ends, and is connected to the first working passage and the second working passage respectively. When air enters the first air chamber and air exits the second air chamber, the first auxiliary exhaust valve core slides to the second state, connecting the second auxiliary working passage with the first auxiliary exhaust port and disconnecting the connection between the first auxiliary working passage and the first auxiliary exhaust port; when air enters the second air chamber and air exits the first air chamber, the first auxiliary exhaust valve core slides to the first state, connecting the first auxiliary working passage with the first auxiliary exhaust port and disconnecting the connection between the second auxiliary working passage and the first auxiliary exhaust port.

7. The valve body mounting plate according to claim 6, characterized in that, An auxiliary exhaust valve housing is provided on one side of the valve body mounting plate. The auxiliary exhaust valve housing is provided with a second auxiliary exhaust valve chamber, a third working port, a fourth working port, and a second auxiliary exhaust port. A second auxiliary exhaust valve core is provided in the second auxiliary exhaust valve chamber, which is slidably disposed in the second auxiliary exhaust valve chamber. The valve body mounting plate is provided with a first auxiliary communication passage that communicates with the first working passage, for connecting the third working port; The valve body mounting plate is provided with a second auxiliary communication passage that communicates with the second working passage, for communicating with the fourth working port; The third working port and the fourth working port are respectively connected to both ends of the second auxiliary exhaust valve chamber. When the first air chamber is filled with air and the second air chamber is filled with air, the second auxiliary exhaust valve core slides to the fourth state, connecting the fourth working port with the second auxiliary exhaust port and cutting off the connection between the third working port and the second auxiliary exhaust port. When air enters the second air chamber and exhausts from the first air chamber, it is in the third state, connecting the third working port with the second auxiliary exhaust port, and cutting off the connection between the fourth working port and the second auxiliary exhaust port.

8. The valve body mounting plate according to claim 7, characterized in that, When the directional valve core is in the neutral position, allowing air to enter the first working port and not to exhaust from the second working port, the first auxiliary exhaust valve core connects the second auxiliary working passage to the first auxiliary exhaust port, or the second auxiliary exhaust valve core connects the third working port to the second auxiliary exhaust port. When the directional valve core is in the neutral position, allowing air to enter the second working port and not exhausting from the first working port, the first auxiliary exhaust valve core connects the second auxiliary working passage to the first auxiliary exhaust port, or the second auxiliary exhaust valve core connects the fourth working port to the second auxiliary exhaust port.

9. The valve body mounting plate according to any one of claims 1 to 7, characterized in that, The reversing valve and the valve body mounting plate are an integral structure.

10. A pneumatic-hydraulic power unit, characterized in that, It is provided with a valve body mounting plate as described in any one of claims 1 to 9.

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