Integrated hydraulic valve bank

Abstract

The utility model provides an integrated hydraulic valve bank which comprises a valve body, a gear set, a power assembly and a valve element, and the valve body is provided with a first cavity, a second cavity and an oil conveying channel. The gear set comprises a driving gear and a driven gear, the driving gear and the driven gear are both arranged in the first cavity, the driving gear and the driven gear are both rotationally connected into the valve body, and the driving gear is meshed with the driven gear; the power assembly is installed on the valve body, and the output end of the power assembly is connected with the driving gear. The oil conveying channel comprises an oil inlet channel, an oil outlet channel and a communicating oil channel, the first cavity is communicated with the outside through the oil inlet channel, and the first cavity is communicated with the second cavity through the communicating oil channel; the oil outlet channel is communicated with the second cavity and the outside; the valve element is arranged in the second cavity. The hydraulic spare parts do not need to be installed on site, so that common workers can install the hydraulic spare parts, the installation difficulty is reduced, and the installation efficiency and the follow-up operation stability are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electro-hydraulic transmission, in particular to an integrated hydraulic valve group. Background Art

[0002] Conventional hydraulic systems in the industrial hydraulics industry consist of power machinery, hydraulic oil pumps, hydraulic valve blocks, hydraulic oil tanks, and piping accessories. During existing production and installation processes, it's been discovered that when equipment manufacturers sell power machinery, hydraulic oil pumps, hydraulic valve blocks, and other equipment to equipment-using companies, the equipment company's operators perform on-site installation and commissioning. However, after use, they discover that the installed equipment far exceeds the manufacturer's specified service life. Consequently, the equipment manufacturer often needs to dispatch professional technicians to perform on-site installation. These technicians then need to travel from the equipment manufacturer to the equipment-using company by public transportation, a process that not only wastes significant time but also incurs high costs for on-site installation by professional technicians.

[0003] In summary, there is an urgent need for an integrated hydraulic valve group to solve or at least partially solve the problems existing in the prior art. Utility Model Content

[0004] The purpose of this utility model is to provide an integrated hydraulic valve group, aiming to solve the problem that existing hydraulic equipment requires professional technicians to go to the site for installation and commissioning, which is time-consuming and labor-intensive. The specific technical solution is as follows:

[0005] 14. The hydraulic control unit of claim 13, wherein the control unit is configured to control the flow of oil from one of the oil pumping stations to the respective oil pumping station, wherein the control unit is configured to control the flow of oil from the respective oil pumping station to the respective oil pumping station.

[0006] Preferably, the driving gear and the driven gear are separated into an oil suction chamber and an oil pumping chamber in the first cavity, the oil inlet passage is communicated with the oil suction chamber, and the communicating oil passage is communicated with the oil pumping chamber.

[0007] Preferably, the connecting oil channel includes a main oil channel and a first branch oil channel, and the hydraulic valve group also includes a first plug. The first end of the main oil channel is connected to the pump oil chamber, and the second end of the main oil channel is led out from one side of the valve body; the first end of the first branch oil channel is connected to the main oil channel, and the second end of the first branch oil channel is connected to the second cavity; the first plug is detachably connected to one end of the main oil channel away from the first cavity.

[0008] Preferably, the connecting oil channel also includes a second branch oil channel, and the hydraulic valve group also includes a second plug. The first end of the second branch oil channel is connected to the main oil channel, and the second end of the second branch oil channel is led out from one side of the valve body; the second plug is detachably connected to one end of the second branch oil channel away from the first branch oil channel.

[0009] Preferably, the driving gear and the driven gear are externally meshed.

[0010] Preferably, the driving gear and the driven gear are internally meshed.

[0011] Preferably, the hydraulic valve group further includes a crescent plate, which is arranged in the first cavity and located between the driving gear and the driven gear, with the first side wall of the crescent plate abutting the outer side of the driving gear and the second side wall of the crescent plate abutting the inner side of the driven gear.

[0012] Preferably, an oil tank is further included, the oil tank is connected to the side wall of the valve body, and the oil inlet channel is communicated with the interior of the oil tank.

[0013] Preferably, the power assembly includes a driving source and a transmission member, the driving source is mounted on the valve body, one end of the transmission member is connected to the output end of the driving source, and the second end of the transmission member is connected to the driving gear.

[0014] The application of the technical solution of the utility model has the following beneficial effects:

[0015] When the equipment leaves the factory, the gear group, power assembly and valve core are all assembled on the valve body. After leaving the factory, the positions of the gear group, power assembly and valve core relative to the valve body do not need to be adjusted or assembled. When using the equipment, you only need to install the integrated hydraulic valve group into the hydraulic system. During the installation process, you only need to connect it to other equipment in the hydraulic system through external hydraulic oil pipes. The hydraulic oil pipes are often connected by threads or snaps. The connection process does not involve the assembly of high-precision parts, so the performance of the equipment will not be affected after assembly. The installation process is simple and can be completed without professional technicians. The performance is stable, which greatly saves labor costs during the installation process.

[0016] When assembling parts at a construction site, which is often heavily polluted, dust and oil can easily enter the hydraulic valve assembly, contaminating the hydraulic oil. Impurities in the hydraulic oil can flow with the oil and damage the seals in the hydraulic components, causing the hydraulic valve assembly to fail to meet its intended performance after installation. This also significantly impacts the lifespan of the hydraulic valve assembly. However, with an integrated layout, installation is completed directly before shipment, ensuring the cleanliness of the environment where the equipment is installed and guaranteeing the performance of the integrated hydraulic valve assembly.

[0017] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. Figure 1-Figure 5 , the utility model is further described in detail. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 This is one of the internal structure diagrams of an integrated hydraulic valve group of the utility model;

[0020] Figure 2 This is the second internal structure diagram of an integrated hydraulic valve group of the utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of a gear set in an integrated hydraulic valve group of the utility model;

[0022] Figure 4 This is a schematic diagram of the overall structure of the gear set in the second embodiment of an integrated hydraulic valve group of the present utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of the gear set and the crescent plate in the third embodiment of the integrated hydraulic valve group of the present invention.

[0024] Among them, 1. valve body; 11. first cavity; 111. oil suction cavity; 112. pump oil cavity; 12. second cavity; 13. oil delivery channel; 131. oil inlet channel; 132. oil outlet channel; 133. connecting oil channel; 1331. main oil channel; 1332. first branch oil channel; 1333. second branch oil channel; 2. gear set; 21. driving gear; 22. driven gear; 3. power assembly; 31. driving source; 32. transmission part; 4. valve core; 5. first plug; 6. second plug; 7. crescent plate; 8. oil tank. DETAILED DESCRIPTION

[0025] To facilitate understanding of the present invention, the following provides a more comprehensive description of the present invention and presents preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0027] Example:

[0028] After conducting research and studies at equipment-using companies, it was found that most hydraulic components are separate components. In various applications (such as factory automation production lines or engineering machinery manufacturers), if they are installed by other factory technicians, due to lack of experience, they need to follow detailed instructions and refer to the instructions for installation. During the installation process, they need to first understand the installation requirements and installation methods in the instructions, which takes a lot of time. In addition, the installation of some precision components tests the installation techniques and skills. For example, the installation of some seals is very easy to cause damage to the seals during the installation process if they are not installed properly. In the end, a lot of installation time and energy are spent but the working performance of the equipment cannot be achieved. Secondly, the environment at the equipment use site is often harsh. During the installation process, impurities such as dust and oil can easily be brought into the hydraulic components. Dust and impurities can easily cause wear and damage to the seals in the hydraulic components, or cause clogging of precision components such as valve cores. As a result, the equipment failure rate has increased significantly, greatly affecting the use of the equipment by the companies using the equipment. However, if the equipment manufacturer directly integrates the hydraulic pump and hydraulic valve into one device during production, there is no need to assemble the hydraulic pump and hydraulic valve after subsequent sales to the user company, which greatly avoids the possibility of contamination of precision parts. Secondly, interfaces are reserved outside the integrated hydraulic valve group, and ordinary technicians can connect the interfaces without the need for professional personnel to operate, which reduces labor costs while improving the stability of the equipment.

[0029] See also Figure 1-Figure 5This embodiment provides an integrated hydraulic valve group, including a valve body 1, a gear group 2, a power assembly 3 and a valve core 4. The valve body 1 is provided with a first cavity 11, a second cavity 12 and an oil delivery passage 13; the gear group 2 includes a driving gear 21 and a driven gear 22, both of which are arranged in the first cavity 11, and the driving gear 21 and the driven gear 22 are both rotatably connected in the valve body 1, and the driving gear 21 is meshed with the driven gear 22; the power assembly 3 is installed on the valve body 1, and the output end of the power assembly 3 is connected to the driving gear 21; the oil delivery passage 13 includes An oil inlet passage 131, an oil outlet passage 132 and a connecting oil passage 133, the first end of the oil inlet passage 131 is connected to the first cavity 11, the second end of the oil inlet passage 131 is led out from one side of the valve body 1, and the second end of the oil inlet passage 131 is connected to the outside world; the first end of the connecting oil passage 133 is connected to the first cavity 11, and the second end of the connecting oil passage 133 is connected to the second cavity 12; the first end of the oil outlet passage 132 is connected to the second cavity 12, the second end of the oil outlet passage 132 is led out from one side of the valve body 1, and the second end of the oil outlet passage 132 is connected to the outside world; the valve core 4 is arranged in the second cavity 12.

[0030] Specifically, the driving gear 21 and the driven gear 22 are rotatably connected to the valve body 1 through bearings. The upper and lower end faces of the driving gear 21 are respectively slidably sealed with the upper and lower inner surfaces of the first cavity 11, and the upper and lower end faces of the driven gear 22 are respectively slidably sealed with the upper and lower inner surfaces of the first cavity 11.

[0031] It can be understood that when the equipment leaves the factory, the gear group 2, the power assembly 3 and the valve core 4 are all assembled on the valve body 1. After leaving the factory, the positions of the gear group 2, the power assembly 3 and the valve core 4 relative to the valve body 1 do not need to be adjusted and assembled. When using the equipment, it is only necessary to install the integrated hydraulic valve group into the hydraulic system. During the installation process, it is only necessary to connect it to other equipment in the hydraulic system through an external hydraulic oil pipe. The hydraulic oil pipe is often connected by threading or snapping. The connection process does not involve the assembly of high-precision parts, so the performance of the equipment will not be affected after assembly. The installation process is simple and can be completed without professional technicians. The performance is stable, which greatly saves labor costs during the installation process. It should also be noted that when assembling parts at a construction site, which is often heavily polluted, dust, oil, and other contaminants can easily enter the hydraulic valve assembly, contaminating the hydraulic oil. Impurities in the hydraulic oil can flow with the oil and damage the seals in the hydraulic components, causing the hydraulic valve assembly to fail to meet its intended performance after installation. This also significantly impacts the lifespan of the hydraulic valve assembly. However, with an integrated layout, installation is completed directly before shipment, ensuring the cleanliness of the environment where the equipment is installed and the performance of the integrated hydraulic valve assembly is guaranteed.

[0032] The driving gear 21 is driven to rotate by the power assembly 3, and the driving gear 21 drives the driven gear 22 to rotate, so that the oil in the first cavity 11 is pumped into the second cavity 12 through the connecting oil channel 133, and flows out from different oil outlet channels 132 through the valve core 4.

[0033] As a preferred embodiment, the driving gear 21 and the driven gear 22 separate the oil suction chamber 111 and the oil pumping chamber 112 in the first cavity 11, and the oil inlet channel 131 is connected to the oil suction chamber 111, and the connecting oil channel 133 is connected to the oil pumping chamber 112. It should be noted that the flow cross-sectional area of the oil inlet channel 131 is larger than the flow cross-sectional area of the connecting oil channel 133. When the power assembly 3 drives the driving gear 21 to rotate, the driving gear 21 drives the driven gear 22 to rotate and continuously pumps the oil in the first cavity 11 into the second cavity 12. It can be seen that because the flow rate of the inhaled and pumped oil is the same, the larger the flow cross-sectional area of the oil inlet channel 131, the smaller the flow resistance of the oil in the oil inlet channel 131, so that the oil can be smoothly sucked into the oil suction chamber 111, thereby ensuring that there is enough oil in the oil suction chamber 111 to be transported to the oil pumping chamber 112. If the flow cross-sectional area of the oil inlet passage 131 is too small and the oil suction resistance is large, the oil may not be able to smoothly enter the oil suction chamber 111, thereby affecting the smooth progress of oil pumping.

[0034] Preferably, the connecting oil channel 133 includes a main oil channel 1331 and a first branch oil channel 1332, and the hydraulic valve group also includes a first plug 5. The first end of the main oil channel 1331 is connected to the pump oil chamber 112, and the second end of the main oil channel 1331 is led out from one side of the valve body 1; the first end of the first branch oil channel 1332 is connected to the main oil channel 1331, and the second end of the first branch oil channel 1332 is connected to the second cavity 12; the first plug 5 is detachably connected to one end of the main oil channel 1331 away from the first cavity 11.

[0035] It should be noted that the connecting oil passage 133 needs to bend to achieve communication with components or cavities located at different positions in the valve body 1. During the processing, the oil passage in the valve body 1 is often drilled using a drill bit, and the oil passage thus drilled is straight. Therefore, through the coordination of the main oil passage 1331 and the first branch oil passage 1332, the main oil passage 1331 and the first branch oil passage 1332 intersect and connect, achieving the turning of the connecting oil passage 133, thereby conveniently connecting components or cavities at different positions in the valve body 1. In addition, the first plug 5 blocks the end of the main oil passage 1331 away from the first cavity 11 to prevent oil leakage from the main oil passage 1331. It should also be noted that the plug is connected to the valve body 1 via a threaded connection. When it is necessary to lead an oil pipe from the main oil passage 1331, the plug can be removed to connect an external oil pipe, facilitating subsequent adjustments to the hydraulic system.

[0036] Preferably, the connecting oil channel 133 also includes a second branch oil channel 1333, and the hydraulic valve group also includes a second plug 6. The first end of the second branch oil channel 1333 is connected to the main oil channel 1331, and the second end of the second branch oil channel 1333 is led out from one side of the valve body 1; the second plug 6 is detachably connected to one end of the second branch oil channel 1333 away from the first branch oil channel 1332.

[0037] It can be understood that through the arrangement of the second branch oil channel 1333, the second plug 6 is detachably connected to the valve body 1 through threads, and the second plug 6 blocks the second branch oil channel 1333 to prevent oil leakage from the second branch oil channel 1333. It should also be noted that when it is necessary to lead out an oil pipe from the second branch oil channel 1333, it is only necessary to remove the second plug 6 and then the external oil pipe can be easily installed.

[0038] As a preferred embodiment, refer to Figure 3, the driving gear 21 and the driven gear 22 are externally meshed. The driving gear 21 is an externally meshing involute gear, and the driven gear 22 is also an externally meshing involute gear. The outer wall of the driving gear 21 is connected to the inner wall of the first cavity 11 in a sliding seal, and the outer wall of the driven gear 22 is connected to the inner wall of the first cavity 11 in a sliding seal. The teeth of the driving gear 21 and the tooth grooves of the driven gear 22 transition from meshing to separation in the oil suction chamber 111, and transition from separation to meshing in the oil pumping chamber 112. That is, when the teeth of the driving gear 21 and the tooth grooves of the driven gear 22 are meshing, the teeth of the driving gear 21 squeeze the oil in the tooth grooves of the driven gear 22 to achieve oil pumping. Similarly, the teeth of the driven gear 22 squeeze the oil in the tooth grooves of the driving gear 21 into the oil pumping chamber 112 to achieve oil pumping.

[0039] As a preferred embodiment, refer to Figure 4 The driving gear 21 and the driven gear 22 are internally meshed. The driving gear 21 is an epicycloidal gear, and the driven gear 22 is a hypocycloidal gear. The driving gear 21 is rotatably mounted on the valve body 1 via a bearing. The driven gear 22 is eccentrically rotatably connected relative to the driving gear 21 in the first cavity 11. The outer wall of the driven gear 22 is slidably connected to the inner wall of the first cavity 11. The number of teeth of the driving gear 21 is one less than the number of tooth grooves of the driven gear 22. For example, the number of teeth of the driving gear 21 is six, and the number of tooth grooves of the driven gear 22 is seven. When the driving gear 21 drives the driven gear 22 to rotate, the oil in the tooth grooves of the driven gear 22 is pumped out when the teeth on the driving gear 21 and the tooth grooves on the driven gear 22 are engaged. When the teeth on the driving gear 21 and the tooth grooves on the driven gear 22 are separated, the oil is sucked in.

[0040] As a preferred embodiment, refer to Figure 5 The driving gear 21 and the driven gear 22 are internally meshed, and the hydraulic valve group further includes a crescent plate 7, which is arranged in the first cavity 11 and located between the driving gear 21 and the driven gear 22. The first side wall of the crescent plate 7 abuts the outer side of the driving gear 21, and the second side wall of the crescent plate 7 abuts the inner side of the driven gear 22.

[0041] It should be noted that the driving gear 21 and the driven gear 22 are eccentrically arranged, the oil suction chamber 111 and the oil pumping chamber 112 are respectively located at the two ends of the crescent plate 7, and the teeth of the driving gear 21 and the tooth grooves of the driven gear 22 transition from meshing to separation at the oil suction chamber 111, and the oil is sucked into the tooth grooves of the driven gear 22 and the driving gear 21 to achieve oil suction, and the teeth of the driving gear 21 and the tooth grooves of the driven gear 22 transition from separation to meshing at the oil pumping position, and the oil is squeezed out from the tooth grooves of the driving gear 21 and the tooth grooves of the driven gear 22 to achieve oil pumping.

[0042] Preferably, the device further includes a fuel tank 8, which is connected to the side wall of the valve body 1, and an oil inlet passage 131 that communicates with the interior of the fuel tank 8. For devices with a smaller fuel tank 8, the fuel tank 8 and the valve body 1 can be directly bolted together. The oil inlet passage 131 on the valve body 1 is directly connected to the fuel tank 8, eliminating the need for a separate oil pipe. This not only saves on the use of oil pipes, but also eliminates the need for oil pipe joints, significantly saving costs. It is important to note that an oil filter (not shown) is installed at the oil inlet passage 131 in the fuel tank 8, and the distance between the oil inlet passage 131 and the bottom wall of the fuel tank 8 is greater than two centimeters.

[0043] Preferably, the power assembly 3 includes a driving source 31 and a transmission member 32 . The driving source 31 is mounted on the valve body 1 . One end of the transmission member 32 is connected to the output end of the driving source 31 , and the second end of the transmission member 32 is connected to the driving gear 21 .

[0044] It is understood that the transmission member 32 is a coupling. During installation, the drive source 31 may be misaligned with the driving gear 21. The coupling eliminates the effects of this misalignment (which increases rotational resistance and causes more intense vibration). In this embodiment, the drive source 31 is a motor. In other embodiments, the drive source 31 may also be a power component capable of providing torque, such as a hydraulic motor or a micro-engine.

[0045] There are multiple oil outlet pipes, the valve core 4 is connected to the first oil branch pipe and is also connected to one or more oil outlet pipes. An electromagnet is arranged on the valve core 4, which controls the movement of the valve core 4 so that the oil in the first oil branch pipe flows out from different oil outlet pipes.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An integrated hydraulic valve group, characterized by: It includes a valve body (1), a gear set (2), a power assembly (3) and a valve core (4). The valve body (1) is provided with a first cavity (11), a second cavity (12) and an oil delivery passage (13); The gear set (2) comprises a driving gear (21) and a driven gear (22), the driving gear (21) and the driven gear (22) are both arranged in the first cavity (11), and the driving gear (21) and the driven gear (22) are both rotatably connected in the valve body (1), and the driving gear (21) and the driven gear (22) are meshed; The power assembly (3) is mounted on the valve body (1), and the output end of the power assembly (3) is connected to the driving gear (21); The oil delivery passage (13) comprises an oil inlet passage (131), an oil outlet passage (132) and a connecting oil passage (133); a first end of the oil inlet passage (131) is connected to the first cavity (11), a second end of the oil inlet passage (131) is led out from one side of the valve body (1), and the second end of the oil inlet passage (131) is connected to the outside world; a first end of the connecting oil passage (133) is connected to the first cavity (11), and a second end of the connecting oil passage (133) is connected to the second cavity (12); a first end of the oil outlet passage (132) is connected to the second cavity (12), a second end of the oil outlet passage (132) is led out from one side of the valve body (1), and the second end of the oil outlet passage (132) is connected to the outside world; The valve core (4) is arranged in the second cavity (12).

2. The integrated hydraulic valve group according to claim 1, characterized in that: The driving gear (21) and the driven gear (22) are separated into an oil suction chamber (111) and an oil pump chamber (112) in the first chamber (11); the oil inlet passage (131) is communicated with the oil suction chamber (111); and the communicating oil passage (133) is communicated with the oil pump chamber (112).

3. The integrated hydraulic valve group according to claim 2, characterized in that: The communicating oil passage (133) includes a main oil passage (1331) and a first branch oil passage (1332), and the hydraulic valve group further includes a first plug (5). The first end of the main oil passage (1331) is in communication with the pump oil chamber (112), and the second end of the main oil passage (1331) is led out from one side of the valve body (1); The first end of the first branch oil passage (1332) is in communication with the main oil passage (1331), and the second end of the first branch oil passage (1332) is in communication with the second cavity (12); The first plug (5) is detachably connected to an end of the main oil channel (1331) away from the first cavity (11).

4. The integrated hydraulic valve group according to claim 3, characterized in that: The connecting oil passage (133) further includes a second branch oil passage (1333), and the hydraulic valve group further includes a second plug (6). The first end of the second branch oil passage (1333) is in communication with the main oil passage (1331), and the second end of the second branch oil passage (1333) is led out from one side of the valve body (1); The second plug (6) is detachably connected to an end of the second branch oil passage (1333) away from the first branch oil passage (1332).

5. An integrated hydraulic valve group according to any one of claims 1 to 4, characterized in that: The driving gear (21) and the driven gear (22) are externally meshed.

6. An integrated hydraulic valve group according to any one of claims 1 to 4, characterized in that: The driving gear (21) and the driven gear (22) are in internal meshing.

7. The integrated hydraulic valve group according to claim 6, characterized in that: The hydraulic valve group further comprises a crescent plate (7), the crescent plate (7) being arranged in the first cavity (11), and the crescent plate (7) being located between the driving gear (21) and the driven gear (22), the first side wall of the crescent plate (7) being in contact with the outer side of the driving gear (21), and the second side wall of the crescent plate (7) being in contact with the inner side of the driven gear (22).

8. An integrated hydraulic valve assembly according to any one of claims 1 to 4, characterized in that: It also includes an oil tank (8), the oil tank (8) is connected to the side wall of the valve body (1), and the oil inlet passage (131) is communicated with the interior of the oil tank (8).

9. An integrated hydraulic valve group according to any one of claims 1 to 4, characterized in that: The power assembly (3) comprises a driving source (31) and a transmission member (32), wherein the driving source (31) is mounted on the valve body (1), one end of the transmission member (32) is connected to the output end of the driving source (31), and the second end of the transmission member (32) is connected to the driving gear (21).

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