Oil pressure valve with spring pretightening force adjusting function

Abstract

The utility model discloses an oil pressure valve with a spring pretightening force adjusting function. The oil pressure valve is mainly composed of a valve body, a front cover, a tail cover, a valve element, a spring and an adjusting mechanism. The adjusting mechanism comprises a cylinder fixedly connected with the tail cover, the cylinder is in threaded connection with a screw, one end of the screw is rotationally connected with a push block, and the other end of the screw is connected with a driving gear. During working, the screw is rotated through the driving gear, and the push block is pushed to change the pre-tightening force of the spring. Through the design, the oil pressure valve can flexibly adapt to different working conditions and can be conveniently adjusted according to actual requirements, and frequent replacement of equipment is avoided. And meanwhile, by means of cooperation of the driving gear and the servo motor, automatic control over spring pre-tightening force adjustment is achieved, the production efficiency and control precision are greatly improved, and the diversified production requirements of the modern industry are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to oil pressure valve technical field, concretely is an oil pressure valve with spring pre -tension force adjustment function. BACKGROUND

[0002] As an important hydraulic control element, oil pressure valve is widely used in various hydraulic systems, and its performance has a crucial influence on the stability and reliability of the whole hydraulic system. Oil pressure valve mainly controls the flow direction, pressure and flow of oil to meet the working needs of different mechanical equipment.

[0003] The existing oil pressure valve is usually composed of valve body, front cover, tail cover, valve core and spring. In these oil pressure valves, the spring plays a key role, and its pre-tightening force directly affects the opening pressure and working characteristics of the oil pressure valve. However, in actual use, different working conditions often require different spring pre-tightening force. However, most of the existing oil pressure valves do not have the function of convenient and efficient spring pre-tightening force adjustment, and cannot flexibly adapt to diversified working condition requirements.

[0004] Therefore, it has important practical significance to develop an oil pressure valve which can conveniently adjust the spring pre-tightening force and realize automatic control. UTILITY MODEL CONTENTS

[0005] The utility model provides an oil pressure valve with spring pre-tightening force adjustment function aiming at the deficiency in the background art.

[0006] The technical scheme adopted by the utility model is: an oil pressure valve with spring pre-tightening force adjustment function, comprising a valve body, a front cover, a tail cover, a valve core and a spring, a cavity for installing the valve core and the spring is arranged in the shell composed of the valve body, the front cover and the tail cover, and a regulating mechanism for regulating the pressure of the spring is further included.

[0007] The regulating mechanism comprises a column fixedly connected with the tail cover, a screw rod threadedly connected with the column, a push block rotatably connected with one end of the screw rod, and a driving gear connected with the other end of the screw rod, one end of the spring is connected with the valve core, the other end is connected with the push block, and the screw rod connected with the driving gear extends out of the tail cover.

[0008] Further, the screw rod is a hollow structure, and the inner cavity is filled with damping grease to inhibit vibration transmission.

[0009] Further, a spring hole connected with the spring is arranged on the valve core, and a circular spring step is arranged on the push block.

[0010] Further, a buffer pad is arranged on the circular spring step.

[0011] Further, the column body comprises a connecting section in interference fit with the shaft hole on the tail cover and a sealing section in sealing fit with the valve cavity, two sealing grooves are arranged on the sealing section, and a sealing ring is arranged in the sealing grooves.

[0012] Further, the column body is internally provided with a packing groove and a screw block groove, the packing groove is filled with sealing packing, and the screw block groove is internally provided with a screw block in thread fit with the screw rod.

[0013] The beneficial effects of the utility model are as follows:

[0014] 1. Flexible adaptation to different working conditions: the patent can adjust the pre-tightening force of the spring by setting the adjusting mechanism, and when used in cooperation with the servo motor, the spring pre-tightening force can be quickly adjusted, so that the oil pressure valve can maintain good working state under different pressure environments, greatly improving the adaptability of the oil pressure valve to diversified working scenes.

[0015] 2. Realize automatic control: the screw rod of the adjusting mechanism is connected with a driving gear, which makes the oil pressure valve convenient to cooperate with the servo motor. The servo motor is used for driving, realizing automatic control of the spring pre-tightening force adjustment. On the automatic production line, the spring pre-tightening force of the oil pressure valve can be accurately adjusted according to the system preset instruction, improving the automation degree and control precision of the production process, and effectively improving the production efficiency and product quality.

[0016] In addition to the purposes, characteristics and advantages described above, the utility model has other purposes, characteristics and advantages. The utility model will be further described in detail below with reference to the drawings. DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model.

[0018] Figure 2 It is a sectional schematic view of the utility model.

[0019] Figure 3 It is Figure 2 A local enlarged schematic view of the middle circle. CONCRETE IMPLEMENTING METHOD

[0020] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0021] It should be noted that if the embodiments of the utility model have directionality indication (such as up, down, left, right, front, back, etc.), the directionality indication is only used to explain the relative position relationship, movement condition, etc.

[0022] The utility model provides a kind of oil pressure valve with the function of spring pre-tightening force adjustment.

[0023] In the embodiment, referring to Figures 1-3 The oil pressure valve with the function of spring pre-tightening force adjustment includes a valve body, a front cover, a tail cover, a valve core and a spring, a cavity for mounting the valve core and the spring is arranged in the shell formed by the valve body, the front cover and the tail cover, and a adjusting mechanism for adjusting the pressure of the spring is further included.

[0024] The adjusting mechanism includes a cylinder fixed to the tail cover, a screw rod threadedly connected to the cylinder, a push block rotationally connected to one end of the screw rod, and a driving gear connected to the other end of the screw rod, one end of the spring is connected to the valve core, and the other end is connected to the push block, and the screw rod connected with the driving gear extends out of the tail cover.

[0025] In the above technical solution, the adjusting mechanism is arranged to adjust the spring pre-tightening force according to different working conditions, so as to meet the diversified use requirements; the screw rod is matched with the driving gear, which can be linked with a servo motor to realize automatic adjustment, improve the operation convenience and control accuracy, and improve the production efficiency.

[0026] Specifically, the screw rod is a hollow structure, and the inner cavity is filled with damping grease to suppress vibration transmission.

[0027] In the embodiment, the screw rod adopts a hollow structure, which effectively reduces the overall weight and saves material cost under the premise of ensuring mechanical strength and transmission function, is conducive to lightweight design of the equipment, reduces the pressure on the mounting and bearing parts, and improves the operation flexibility of the equipment. In addition, the damping grease is filled, which can form a buffer layer between the inner cavity of the screw rod and the vibrating parts by using its viscosity, consume vibration energy, effectively reduce vibration and noise, reduce part wear, prolong the service life of the oil pressure valve, and also improve the control accuracy.

[0028] Specifically, the valve core is provided with a spring hole connected with the spring, and the push block is provided with a circular spring step.

[0029] In the embodiment, the valve core is provided with a spring hole, and the push block is provided with a circular spring step, which provides precise positioning for spring connection, ensures stable installation of the spring, makes the spring force evenly during operation of the oil pressure valve, ensures stable operation of the spring, and further improves the stability and reliability of the oil pressure valve.

[0030] Specifically, the circular spring step is provided with a buffer pad.

[0031] In the embodiment, the circular spring step is provided with a buffer pad, which can effectively buffer the impact force between the valve core and the push block during the spring expansion and contraction, reduce the wear of components, reduce mechanical noise, prolong the service life of key components of the oil pressure valve, and improve the quietness and comfort of equipment operation.

[0032] Specifically, the column includes a connecting section in interference fit with the shaft hole on the tail cover and a sealing section in sealing fit with the valve cavity, two sealing grooves are arranged on the sealing section, and a sealing ring is installed in the sealing grooves.

[0033] In the embodiment, the column is provided with a connecting section and a sealing section, the connecting section is in interference fit with the shaft hole on the tail cover to ensure stable connection, and the two sealing grooves and the sealing ring on the sealing section can effectively prevent leakage and ensure stable internal pressure of the oil pressure valve.

[0034] Specifically, the column is provided with a packing groove and a screw block groove, the packing groove is filled with sealing packing, and the screw block groove is provided with a screw block in thread fit with the screw rod.

[0035] In the embodiment, the column is provided with a packing groove and a screw block groove, the packing groove is filled with sealing packing to ensure the sealing effect between the screw rod and the main body, and the screw block in the screw block groove is in thread fit with the screw rod to provide stability and reliability of the screw thread connection of the screw rod, ensure smooth operation of the adjusting mechanism, reduce the jamming and loosening phenomenon during adjustment, and improve the adjustment accuracy.

[0036] Note for all technical personnel: Although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to the utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A hydraulic valve with spring preload adjustment function, comprising a valve body, a front cover, a tail cover, a valve core, and a spring, wherein a cavity for mounting the valve core and the spring is provided within the outer shell formed by the valve body, the front cover, and the tail cover, characterized in that: It also includes an adjustment mechanism for adjusting the pressure of the spring; The adjustment mechanism includes a column fixed to the tail cover, a screw threaded to the column, a push block rotatably connected to one end of the screw, and a drive gear connected to the other end of the screw. One end of the spring is connected to the valve core, and the other end is connected to the push block. The screw connected to the drive gear extends out of the tail cover.

2. The hydraulic valve with spring preload adjustment function according to claim 1, characterized in that: The screw has a hollow structure, and its inner cavity is filled with damping grease to suppress vibration transmission.

3. The hydraulic valve with spring preload adjustment function according to claim 1, characterized in that: The valve core is provided with a spring hole for connecting to the spring, and the push block is provided with a circular spring step.

4. The hydraulic valve with spring preload adjustment function according to claim 3, characterized in that: A cushioning pad is provided on the circular spring step.

5. The hydraulic valve with spring preload adjustment function according to claim 1, characterized in that: The column includes a connecting section that is interference-fitted with the shaft hole on the tail cover and a sealing section that is sealingly fitted with the valve cavity. The sealing section is provided with two sealing grooves, and a sealing ring is installed in the sealing groove.

6. The hydraulic valve with spring preload adjustment function according to claim 1 or 5, characterized in that: The column body is provided with a packing groove and a screw block groove. The packing groove is filled with sealing packing, and the screw block groove is provided with a screw block that is threaded with the screw.

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