Multi-way valve group and driving mechanism thereof

Abstract

The utility model provides a multi-way valve group and a driving mechanism thereof, and the multi-way valve group comprises a valve body which is internally provided with a P channel and a T channel; the at least one lifting joint is arranged on the valve body and comprises a channel A2 and a channel B2, a hydraulic lock is arranged in the channel A2 and comprises an inner valve element elastically connected with the channel A2, an outer valve element is arranged outside the inner valve element in a sliding mode, the outer valve element is arranged in the channel A2 in a sliding mode, an ejector rod is arranged in the channel A2 in a sliding mode, and an ejector protruding block is arranged on the ejector rod; the horizontal valve rod is arranged in the valve body in a sliding mode, a first communicating groove and a second communicating groove are formed in the horizontal valve rod, and a corresponding groove matched with the ejector rod is formed in the horizontal valve rod; the one-way channel is connected with the channel P and arranged on the valve body, and a one-way valve is arranged in the one-way channel. Therefore, the hydraulic mechanism can ascend, descend and be static, the hydraulic mechanism in the lifting state can be locked, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of multi-way valve groups, in particular to a multi-way valve group and a driving mechanism thereof. Background Art

[0002] Multi-way valve is an important component of engineering machinery that uses hydraulic pressure as the lifting driving force. Multi-way valve is widely used in engineering machinery, mining, metallurgy, shipbuilding, medicine and other industries.

[0003] There are many kinds of multi-way valves in the prior art, such as a large flow return oil multi-way valve with publication number CN117803620A, which includes a multi-way valve body, a multi-way valve stem, an electric proportional pressure reducing valve, a first relief valve, a second relief valve, an electromagnetic reversing valve, a compensator, a valve block and a two-way cartridge valve. When the electric proportional pressure reducing valve and the electromagnetic reversing valve are energized, the multi-way valve stem moves to the left, and the pressure oil at the P port passes through the compensator and the throttle port into the A port cavity of the multi-way valve, and finally enters the rod cavity of the telescopic cylinder, and the oil in the rodless cavity of the telescopic cylinder returns to the oil return oil. The liquid enters the B-port cavity through the B-port of the multi-way valve, and a part of the oil in the B-port cavity enters the T-port cavity through the throttle port. The inlet and outlet of the electromagnetic reversing valve are connected, and the oil in the B-port cavity flows into the T-port cavity through the two-way cartridge valve, and the B-port oil enters the T-port cavity through the throttle port of the two-way ball valve. It can adjust the return oil flow, but the above-mentioned device lacks a locking mechanism for the hydraulic mechanism, which makes the hydraulic mechanism easy to be damaged (for example, the device stops when the plow is in the lifted state, and the plow may fall after being stationary for a night, causing damage to the plow), which is still inconvenient to use.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a multi-way valve group and its driving mechanism, which can not only realize the rising, falling and stationary state of the hydraulic mechanism, but also lock the hydraulic mechanism in the lifting state to avoid damage to the device and extend the service life of the device.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a multi-way valve group, including: a valve body, which is provided with a P channel and a T channel; at least one lifting link arranged on the valve body, which includes an A2 channel and a B2 channel, and a hydraulic lock is arranged in the A2 channel, and the hydraulic lock includes an inner valve core elastically connected to the A2 channel, and an outer valve core is slidably arranged outside the inner valve core, and the outer valve core is slidably arranged in the A2 channel, and a push rod is slidably arranged in the A2 channel, and a top protrusion is arranged on the push rod; at least one reciprocating horizontal valve stem is slidably arranged in the valve body, and a first connecting groove for connecting the P channel and the A2 channel and a second connecting groove for connecting the P channel and the B2 channel are arranged on the horizontal valve stem, and a corresponding groove cooperating with the push rod is arranged on the horizontal valve stem; a one-way channel connected to the P channel, which is arranged on the valve body, and a one-way valve is arranged in the one-way channel.

[0007] According to the multi-way valve group of the utility model, a plurality of multi-way links are further provided on the valve body, each of the multi-way links includes an A1 channel and a B1 channel, each of the A1 channel and the B1 channel is connected to the P channel, a one-way channel is provided between the A1 channel and the B1 channel, and a horizontal valve stem cooperating with the A1 channel and the B1 channel is slidably penetrated in the valve body.

[0008] According to the multi-way valve group of the utility model, the horizontal valve stem and the multi-way link, and the horizontal valve stem and the lifting link are matched one by one.

[0009] According to the multi-way valve group of the utility model, the outer valve core is slidably connected to the valve seat, the valve seat is threadedly connected to the side wall of the A2 channel, and a plurality of sealing rings are arranged between the valve seat and the side wall of the A2 channel.

[0010] According to the multi-way valve group of the utility model, the valve seat is threadedly connected to the side wall of the A channel of the lifting link, and a sealing ring is provided between the valve seat and the A channel of the lifting link.

[0011] The utility model also provides a driving mechanism, including an internal threaded sleeve connected to a horizontal valve stem, the internal threaded sleeve is threadedly connected to a screw rod, the screw rod is provided with a driven gear, the driven gear is meshedly connected to a transmission gear, and the transmission gear is meshedly connected to a reciprocating driving gear.

[0012] According to the driving mechanism of the utility model, a power box is provided on the side wall of one end of the valve body, a driving member is provided in the power box, and the driving gear is provided on the output shaft of the driving member.

[0013] According to the driving mechanism of the utility model, the transmission gear is arranged on the transmission shaft, and both ends of the transmission shaft are rotatably connected to the side walls of the power box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the external structure of the utility model;

[0015] Figure 2 is a side sectional view of a multi-way connection;

[0016] Figure 3 is a side sectional view of the lifting joint;

[0017] Figure 4 yes Figure 3 A structural cross-sectional view of part A;

[0018] In the figure: 1-valve body, 11-P channel, 12-T channel, 13-multi-way link, 14-lift link, 15-one-way channel, 16-one-way valve, 17-valve seat, 171-external valve core, 172-inner valve core, 18-top rod, 2-drive box, 21-horizontal valve stem, 22-inner threaded sleeve, 23-screw, 24-driven gear, 25-transmission shaft, 251-transmission gear, 26-driving member, 27-driving gear. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0020] See also Figure 1 to Figure 4 The utility model provides a multi-way valve group and a driving mechanism thereof, including:

[0021] A valve body 1 is provided with a P channel 11 and a T channel 12 inside the valve body 1. The P channel 11 is connected to the hydraulic pump, and the T channel 12 is connected to the hydraulic oil tank.

[0022] A plurality of multi-channel connections 13 each include an A1 channel and a B1 channel arranged side by side. The A1 channel and the B1 channel 14 are both connected to hydraulic pipes. The A1 channel corresponds to the rising circuit of the hydraulic mechanism, and the B1 channel corresponds to the falling circuit of the hydraulic mechanism. The multi-channel connections 13 are all arranged close to the P channel 11 and the T channel 12.

[0023] A plurality of one-way channels 15 are provided between the A1 channel and the B1 channel. The one-way channels 15 are connected to the P channel 11. The P channel 11 is provided with branches respectively connected to the A1 channel and the B1 channel. A one-way valve 16 is provided at the connection between the one-way channel 15 and the P channel 11. The one-way valve 16 cooperates with the branch. When the one-way valve 16 is in a natural state, the P channel 11 is not connected to the branch.

[0024] At least one lifting link 14 is arranged at one end of the valve body 1 away from the P channel 11 and the T channel 12. The lifting link 14 includes an A2 channel and a B2 channel arranged side by side. The A2 channel and the B2 channel are both connected to hydraulic pipes. A hydraulic lock is arranged inside the A2 channel. The hydraulic lock includes a valve seat 17 and an outer valve core 171. The valve seat 17 is threadedly connected to the A2 channel. An outer valve core 171 is slidably arranged inside the valve seat 17. An inner valve core 172 is slidably arranged inside the outer valve core 171. An elastic member is arranged between the inner valve core 172 and the top of the A2 channel. When the elastic member is in a natural state, the hydraulic lock is in a closed state. A push rod 18 is slidably arranged at the bottom of the A2 channel, and a top protrusion is arranged on the top of the push rod 18.

[0025] At least one horizontal valve stem 21 capable of reciprocating movement is slidably arranged inside the valve body 1, the multi-way link 13 and the horizontal valve stem 21, the lifting link 14 and the horizontal valve stem 21 are matched one by one, and the horizontal valve stem 21 is provided with a first connecting groove and a second connecting groove, wherein the first connecting groove can connect the P channel 11 and the A1 channel (or the A2 channel), and the second connecting channel can connect the P channel 11 and the B1 channel (or the B2 channel), and the horizontal valve stem 21 matched with the lifting link is provided with a corresponding groove matched with the push rod 18.

[0026] The drive box 2 is arranged on one side of the valve body 1. A drive member 26 is fixedly connected to the drive box 2. A driving gear 27 is connected to the output shaft of the drive member 26. The driving gear 27 is meshed with a transmission gear 251. The transmission gear 251 is fixedly connected to the transmission shaft 25. Both ends of the transmission shaft 25 are rotatably connected to the side wall of the drive box 2. The transmission gear 251 is meshed with a driven gear 24. The driven gear 24 is fixedly arranged on the screw rod 23. One end of the screw rod 23 is rotatably connected to the side wall of the drive box 2. The other end of the screw rod 23 is threadedly connected to an internal threaded sleeve 22. A thread matching the screw rod 23 is arranged inside the internal threaded sleeve 22. The internal threaded sleeve 22 is connected to the horizontal valve stem 21. When the screw rod 23 rotates, it can drive the horizontal valve stem 21 to reciprocate horizontally.

[0027] See also Figure 1 to Figure 4 Preferably, a plurality of sealing rings are provided between the valve seat 17 and the side wall of the A2 channel to ensure a good sealing effect.

[0028] See also Figure 1 to Figure 4 Preferably, the elastic member is a spring.

[0029] See also Figure 1 to Figure 4 Preferably, the driving member 26 is a rotary motor that can provide sufficient power.

[0030] During the implementation of the utility model: during the operation of the multi-way connection 13 of the device, when the hydraulic mechanism is needed to perform lifting work, the driving member 26 cooperating with the above-mentioned multi-way connection 13 is started, and the driving member 26 drives the active gear 27 to rotate. Under the action of the transmission gear 251, the driven gear 27 drives the screw rod 23 to rotate, and the internal threaded sleeve 22 drives the horizontal valve stem 21 to move horizontally, so that the first connecting groove connects the P channel 11 and the A1 channel of the above-mentioned multi-way connection (at this time, the P channel 11 is not connected to the B1 channel of the multi-way connection), and the hydraulic oil enters the above-mentioned A1 channel from the P channel 11 to complete the lifting work.

[0031] When the hydraulic mechanism is required to perform descending work, the driving member 26 is started to move the horizontal valve stem 21 to the second connecting groove to connect the P channel 11 and the B1 channel (at this time, the P channel 11 is not connected to the A1 channel), and the hydraulic oil enters the B1 channel from the P channel 11 to complete the descending work.

[0032] The lifting link is used to lock the hydraulic mechanism 14, and its operating principle is as follows:

[0033] When the hydraulic mechanism performs lifting work, the corresponding groove on the horizontal valve stem 21 that cooperates with the lifting link 14 cooperates with the push rod 18, and the push rod 18 and the outer valve core 171, as well as the push rod 18 and the inner valve core 172 are not in contact. The A2 channel is connected to the P channel 11. At this time, the hydraulic oil in the P channel 11 pushes the outer valve core 171 and the inner valve core 172 to compress the elastic part, so that the hydraulic oil can pass through the A2 channel to assist in completing the lifting work.

[0034] When the hydraulic mechanism is descending, the corresponding groove does not cooperate with the push rod 18, and the horizontal valve stem 21 that cooperates with the lifting link 14 cooperates with the push rod 18. The push rod 18 moves upward, and the top protrusion first pushes up the inner valve core 172 (at this time, there is a certain distance between the top end of the push rod 18 and the outer valve core 171), and then the push rod 18 continues to move upward to push up the outer valve core 171. At this time, the hydraulic oil can pass through the A2 channel. The design that the inner valve core 172 is pushed up first and the outer valve core 171 is pushed up later can realize the pressure relief function when the push rod 18 rises, reduce the pressure difference at both ends of the hydraulic lock, and make the outer valve core 171 easier to be pushed up.

[0035] When the hydraulic mechanism is in a stationary state, there is no communication between P channel 11 and A2 channel, and between P channel and B2 channel. At this time, the hydraulic lock in A2 channel is in a locked state, that is, the hydraulic oil in the hydraulic mechanism cannot flow, thereby achieving stationary and locked state of the hydraulic mechanism.

[0036] The utility model provides a multi-way valve group and a driving mechanism thereof, and the beneficial effects thereof are as follows:

[0037] 1. By setting up multiple connections, the hydraulic mechanism can be raised, lowered and stationary, which improves the application range of the device.

[0038] 2. By setting the lifting linkage and hydraulic lock, the hydraulic mechanism in the lifting state can be locked to avoid damage to the hydraulic mechanism and extend the service life of the device.

[0039] In summary, the beneficial effects of the utility model are: it can not only realize the rising, falling and stationary state of the hydraulic mechanism, but also lock the hydraulic mechanism in the lifting state to avoid damage to the device and extend the service life of the device.

[0040] Of course, the present invention may have a variety of embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A multi-way valve group, characterized in that: include: A valve body, in which a P channel and a T channel are provided; At least one lifting link provided on the valve body, each of which includes an A2 channel and a B2 channel, wherein a hydraulic lock is provided in the A2 channel, wherein the hydraulic lock includes an inner valve core elastically connected to the A2 channel, wherein an outer valve core is slidably provided outside the inner valve core, wherein the outer valve core is slidably provided in the A2 channel, wherein a push rod is slidably provided in the A2 channel, and a push rod is provided on the push rod; At least one reciprocating horizontal valve stem, which is slidably disposed in the valve body, the horizontal valve stem is provided with a first connecting groove for connecting the P channel with the A2 channel and a second connecting groove for connecting the P channel with the B2 channel, and the horizontal valve stem is provided with a corresponding groove that cooperates with the push rod; A one-way channel connected to the P channel is arranged on the valve body, and a one-way valve is arranged in the one-way channel.

2. The multi-way valve assembly according to claim 1, characterized in that: The valve body is also provided with a plurality of multi-way connections, each of which includes an A1 channel and a B1 channel, each of which is connected to a P channel, a one-way channel is provided between the A1 channel and the B1 channel, and a horizontal valve stem cooperating with the A1 channel and the B1 channel is slidably penetrated in the valve body.

3. The multi-way valve assembly according to claim 2, characterized in that: The horizontal valve stem and the multi-way joint, and the horizontal valve stem and the lifting joint are matched one by one.

4. The multi-way valve assembly according to claim 1, characterized in that: The outer valve core is slidably connected to the valve seat, the valve seat is threadedly connected to the side wall of the A2 channel, and a plurality of sealing rings are arranged between the valve seat and the side wall of the A2 channel.

5. A driving mechanism, based on the multi-way valve assembly according to any one of claims 1 to 4, characterized in that: It comprises an internal threaded sleeve connected to a horizontal valve stem, wherein the internal threaded sleeve is threadedly connected to a screw rod, and the screw rod is provided with a driven gear, and the driven gear is meshedly connected to a transmission gear, and the transmission gear is meshedly connected to a driving gear that can rotate back and forth.

6. The driving mechanism according to claim 5, characterized in that: A power box is arranged on a side wall of one end of the valve body, a driving member is arranged in the power box, and the driving gear is arranged on the output shaft of the driving member.

7. The driving mechanism according to claim 6, characterized in that: The transmission gear is arranged on the transmission shaft, and both ends of the transmission shaft are rotatably connected to the side walls of the power box.

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