Oil path block structure of hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic equipment accessories, in particular to an oil path block structure of a hydraulic oil cylinder. The device comprises an oil path block body connected to a hydraulic oil cylinder, a balance valve and a throttling valve are installed on one side of the oil path block body, and a hydraulic lock and a safety overflow valve are arranged on the other side of the oil path block body. A V1 port, a V2 port and an MC2 port are formed in the surface of the front side of the manifold block body, and an MC1 port is formed in the surface of the rear side of the manifold block body. The balance valve, the throttling valve, the hydraulic lock and the safety overflow valve are arranged on the surface of the hydraulic oil cylinder in a centralized mode, the installation size is reduced, an oil way is simple and clear, leakage points are reduced, and therefore the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment accessories, in particular to a hydraulic cylinder oil circuit block structure. Background Art

[0002] The hydraulic cylinder in the hydraulic equipment is the actuator of the hydraulic system. It is an actuator that relies on the high-pressure oil from the hydraulic pump. The high-pressure oil is controlled by the control valve, enters from one end of the cylinder, and discharges the hydraulic oil at the other end to push the cylinder to extend or retract. The oil block installed at the cylinder port is simply a block that controls the work of the hydraulic oil. The actuator hydraulic cylinder and control valve in the hydraulic system mostly adopt a split structure. In the hydraulic system, a group of hydraulic cylinders corresponds to a group of control valves, which are connected by pipelines in the middle. Different functions correspond to different control valves.

[0003] In the prior art, the utility model patent with the publication number CN221374108U provides a hydraulic device and a hydraulic system, the hydraulic device includes an oil cylinder and a control valve; the control valve includes a valve body with a valve cavity, a valve core rotatably arranged in the valve body, and a transmission member arranged outside the valve body and rotating synchronously with the valve core, the valve core is driven to move along its own axial direction; the oil cylinder includes a cylinder body and a piston rod, the cylinder body is connected to the valve cavity through an oil circuit, and a transmission part connected to the transmission member is formed on the piston rod; when the valve core is driven to rotate, the oil flowing into the oil cylinder from the oil circuit can push the piston rod to slide, so as to drive the transmission member and the valve core to rotate synchronously through the transmission part. The hydraulic device described in the utility model, when the valve core is driven to rotate, the oil pushes the piston rod to slide, and the transmission member and the valve core can be driven to rotate synchronously through the transmission part, which is conducive to realizing the closed-loop feedback of the hydraulic device, thereby facilitating the improvement of the use accuracy of the hydraulic device, and at the same time, compared with the setting of a built-in closed-loop feedback structure, it has the advantage of easy maintenance.

[0004] However, the internal mechanical feedback mechanism is difficult to manufacture, has high installation precision requirements, is prone to failure and is difficult to repair, and cannot meet the use requirements. In addition, the oil cylinder and each valve body are arranged separately, resulting in a large installation volume, many pipelines, many leakage points, and high costs. Utility Model Content

[0005] In order to overcome the defects existing in the above-mentioned prior art, the purpose of the utility model is to provide a hydraulic cylinder oil circuit block structure, which changes the connection layout between the valve body and the cylinder to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hydraulic cylinder oil circuit block structure, comprising an oil circuit block body connected to the hydraulic cylinder, a balancing valve and a throttle valve being installed on one side of the oil circuit block body, and a hydraulic lock and a safety overflow valve being arranged on the other side of the oil circuit block body;

[0008] The front surface of the oil circuit block body is provided with a V1 port, a V2 port and a MC2 port, and the rear surface of the oil circuit block body is provided with a MC1 port.

[0009] Further preferably, the balancing valve and the throttle valve are arranged on the left side of the oil circuit block body, and the balancing valve and the throttle valve are connected to the rodless chamber of the hydraulic cylinder, the hydraulic lock and the safety overflow valve are arranged on the right side of the oil circuit block body, and the safety overflow valve is connected to the rod chamber of the hydraulic cylinder.

[0010] Further preferably, a sealing surface connected to the hydraulic cylinder is provided on the lower surface of the oil circuit block body, and the oil circuit block body is installed on the cylinder port of the hydraulic cylinder in a plate-like manner by means of screws.

[0011] Further preferably, the V1 port and the V2 port are connected to control the reversing valve via an oil pipe.

[0012] Further preferably, the MC2 port and the MC1 port are both pressure measuring ports.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, the hydraulic cylinder oil circuit block structure, the balance valve, the throttle valve, the safety relief valve and the like are connected and arranged on the surface of the cylinder oil circuit block, the oil circuit is simple and clear, the leakage points are further reduced, and the safety of the device is improved.

[0015] 2. In the utility model hydraulic cylinder oil circuit block structure, the lower surface of the oil circuit block body is provided with a sealing surface connected to the hydraulic cylinder, and the oil circuit block body is directly installed on the cylinder port through a screw plate, which reduces the installation volume, reduces the cost, and is more convenient and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0017] Figure 2 This is a front view structural schematic diagram of the utility model;

[0018] Figure 3 It is a rear view structural schematic diagram of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the utility model when viewed from above;

[0020] Figure numerals: 1. Oil circuit block body; 2. Balance valve; 3. Throttle valve; 4. Hydraulic lock; 5. Safety relief valve; 6. V1 port; 7. V2 port; 8. MC2 port; 9. MC1 port. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] A hydraulic cylinder oil circuit block structure, such as Figure 1 , Figure 2 and Figure 3 As shown, it includes an oil circuit block body 1 connected to a hydraulic cylinder, a balance valve 2 and a throttle valve 3 are installed on one side of the oil circuit block body 1, and a hydraulic lock 4 and a safety overflow valve 5 are arranged on the other side of the oil circuit block body 1;

[0023] The front surface of the oil circuit block body 1 is provided with a V1 port 6 , a V2 port 7 and a MC2 port 8 , and the rear surface of the oil circuit block body 1 is provided with a MC1 port 9 .

[0024] Among them, the balancing valve 2, throttle valve 3, hydraulic lock 4 and safety relief valve 5 are installed on the oil circuit block body 1 to reduce the oil circuit mileage, reduce the occurrence of leakage points, and make the device more stable. At the same time, V1 port 6 and V2 port 7 are provided on the oil circuit block body 1 for receiving the pressure oil from the control reversing valve and entering the cylinder through the interface, and MC1 port 9 and MC2 port 8 are provided as pressure measuring ports for monitoring the pressure changes in the cylinder.

[0025] Furthermore, if Figure 1 As shown, the balancing valve 2 and the throttle valve 3 are arranged on the left side of the oil circuit block body 1, and the balancing valve 2 and the throttle valve 3 are connected to the rodless chamber of the hydraulic cylinder, the hydraulic lock 4 and the safety overflow valve 5 are arranged on the right side of the oil circuit block body 1, and the safety overflow valve 5 is connected to the rod chamber of the hydraulic cylinder.

[0026] The lower surface of the oil circuit block body 1 is provided with a sealing surface connected to the hydraulic cylinder, and the oil circuit block body 1 is installed on the cylinder port of the hydraulic cylinder in a plate-like manner through screws.

[0027] Among them, the balancing valve 2 and the throttle valve 3 are connected to the rodless chamber of the hydraulic cylinder, and the internal and external pressures are regulated by manually adjusting the balancing valve 2 and the throttle valve 3 to ensure the normal operation of the rodless chamber. The safety relief valve 5 is connected to the rod chamber of the hydraulic cylinder, and the pressure oil flow rate is regulated by manually adjusting the safety relief valve 5 to ensure the normal operation of the rod chamber. The hydraulic lock 4 can lock the piston rod of the hydraulic cylinder to prevent it from moving uncontrollably due to factors such as its own weight when the piston rod stops moving. At the same time, the oil circuit block main body 1 can be directly installed on the hydraulic cylinder through a screw plate to reduce the overall installation volume and reduce costs.

[0028] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, the V1 port 6 and the V2 port 7 are connected to control the reversing valve via an oil pipe.

[0029] The MC2 port 8 and the MC1 port 9 are both pressure measuring ports.

[0030] Among them, the V1 port 6 and the V2 port 7 on the oil circuit block body 1 are connected to the control reversing valve through the oil circuit pipeline, so that the pressure oil from the control reversing valve can enter the hydraulic cylinder through the V1 port 6 and the V2 port 7. At the same time, the MC2 port 8 and the MC1 port 9 arranged on the surface of the oil circuit block body 1 are pressure measuring ports, which can monitor the pressure inside and outside the hydraulic cylinder, thereby adjusting the working state of the hydraulic cylinder by adjusting various valve bodies to make it work normally.

[0031] In order to better understand the present invention, the following is a complete description of the working principle of the present invention:

[0032] The cylinder oil block structure is directly connected to a hydraulic cylinder, and the valve block and the hydraulic cylinder are installed in a mechanical device as a whole. When working, after connecting the V1 port 6 and the V2 port 7 on the oil block body 1 to the required control reversing valve through the oil pipeline, the control reversing valve is opened, so that the pressure oil enters the hydraulic cylinder through the oil pipeline from the V1 port 6 on the oil block body 1, and after flowing through the balance valve 2 and the throttle valve 3, it enters the rodless chamber of the cylinder. At this time, the pressure inside and outside the rodless chamber is detected at the MC2 port 8, and the balance valve 2 and the throttle valve 3 are adjusted to ensure the normal operation of the rodless chamber. After a period of time, when the pressure oil enters the rod chamber of the cylinder, the hydraulic lock 4 is manually opened. After the hydraulic lock 4 is opened, the pressure oil in the rod chamber of the cylinder flows through the hydraulic lock 4 and enters the V2 port 7 on the oil block body 1, and flows through the control reversing valve via the oil pipeline on the V2 port 7, forming a loop so that the piston rod of the hydraulic cylinder can be smoothly extended. The pressure inside and outside the rod chamber is detected at MC1 port 9. When the working demand causes the piston rod of the hydraulic cylinder to stop at any position, the balance valve 2 and the hydraulic lock 4 are manually adjusted to lock the piston rod of the hydraulic cylinder to prevent the piston rod from moving uncontrollably due to self-load and other factors. The safety relief valve 5 is regulated by the pressure change detected by MC1 port 9 to change the flow rate of the oil pipeline to prevent the pressure in the rod chamber from increasing due to the change of internal and external flow, thereby damaging the hydraulic cylinder. When the piston rod of the hydraulic cylinder retracts, the external control reversing valve is manually adjusted so that the pressure oil at the external control reversing valve enters the V2 port 7 on the oil circuit block body 1 from the oil circuit pipeline and enters the oil circuit block body 1. At this time, the pressure oil enters the hydraulic lock 4 and the rod chamber of the cylinder respectively, and the pressure change is detected through the MC1 port 9. After a period of time, when the pressure oil flows into the rodless chamber, the pressure change is detected at the MC2 port 8 and the balance valve 2 and the throttle valve 3 are manually opened. After the balance valve 2 and the throttle valve 3 are opened, the pressure oil in the rodless chamber of the cylinder passes through the balance valve 2 and the throttle valve 3 and enters the V1 port 6 of the oil circuit block body 1, and enters the external control reversing valve through the oil circuit pipeline of the V1 port 6, forming a loop so that the hydraulic cylinder can retract smoothly. When retracting, the balance valve 2 and the throttle valve 3 can prevent the hydraulic cylinder from being retracted at an overspeed due to load loss. When the oil supply to the V1 port 6 stops, the piston rod of the hydraulic cylinder can stop at any position. Manual regulation of the balance valve 2 and the hydraulic lock 4 can lock the piston rod of the hydraulic cylinder to prevent uncontrolled movement of the piston rod of the hydraulic cylinder. At the same time, the safety relief valve 5 can protect the rod chamber of the hydraulic cylinder to prevent excessive pressure in the rod chamber from damaging the hydraulic cylinder.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hydraulic cylinder oil circuit block structure, characterized in that: It comprises an oil circuit block body (1) connected to a hydraulic cylinder, a balancing valve (2) and a throttle valve (3) being installed on one side of the oil circuit block body (1), and a hydraulic lock (4) and a safety overflow valve (5) being arranged on the other side of the oil circuit block body (1); The front surface of the oil circuit block body (1) is provided with a V1 port (6), a V2 port (7) and a MC2 port (8), and the rear surface of the oil circuit block body (1) is provided with a MC1 port (9).

2. A hydraulic cylinder oil circuit block structure according to claim 1, characterized in that: The balancing valve (2) and the throttle valve (3) are arranged on the left side of the oil circuit block body (1), and the balancing valve (2) and the throttle valve (3) are connected to the rodless chamber of the hydraulic cylinder; the hydraulic lock (4) and the safety overflow valve (5) are arranged on the right side of the oil circuit block body (1), and the safety overflow valve (5) is connected to the rod chamber of the hydraulic cylinder.

3. The hydraulic cylinder oil circuit block structure according to claim 1, characterized in that: The lower surface of the oil circuit block body (1) is provided with a sealing surface connected to the hydraulic cylinder, and the oil circuit block body (1) is installed on the cylinder port of the hydraulic cylinder in a screw plate manner.

4. The hydraulic cylinder oil circuit block structure according to claim 1, characterized in that: The V1 port (6) and the V2 port (7) are connected to a control reversing valve via an oil pipe.

5. The hydraulic cylinder oil circuit block structure according to claim 1, characterized in that: The MC2 port (8) and the MC1 port (9) are both pressure measuring ports.

Images