Pressure oil cylinder capable of accurately controlling pressure

Abstract

The utility model discloses an accurate pressure control pressure oil cylinder, which relates to the technical field of pressure oil cylinders, and comprises an oil cylinder main body, the outer wall of the oil cylinder main body is provided with an air receiving hole, the outer wall of the oil cylinder main body is fixedly connected with a storage hook, the outer wall of the air receiving hole is in threaded connection with a protective cover, the inner wall of the protective cover is provided with a first inner screw, and the inner wall of the protective cover is provided with a second inner screw. By arranging an adjusting block, when the air connecting hole assists the pressure oil cylinder in daily use, in order to improve the convenience of adjusting the inner diameter size of the air connecting hole, the effect of flexibly adjusting the air pressure in the pressure oil cylinder is achieved, and the air connecting hole is arranged in the pressure oil cylinder. And a rotating disc can be rotated to drive a sliding column to synchronously slide along the inner walls of a chute and a sliding groove through threaded connection of a second inner screw, and an adjusting block is driven to perform centering motion along the outer wall of a vent hole, so that the effect of effectively adjusting the inner diameters of the vent hole and an air receiving hole is achieved, and the effect of accurately controlling the pressure of the inner wall of the oil pressing cylinder is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil pressure cylinders, in particular to an oil pressure cylinder with precise pressure control. Background Art

[0002] The hydraulic cylinder is the main component of engineering machinery presses, etc. Many actions are completed by the cylinder. The cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines.

[0003] For example, announcement number CN220151647U discloses a pressure-maintaining oil cylinder, the key points of its technical solution are that it includes a cylinder body, a piston and a piston rod fixedly connected to the piston, an oil chamber is formed in the cylinder body, a cylinder cover is detachably connected to the cylinder body, and a hydraulically controlled one-way valve is adopted. According to the characteristics of the hydraulically controlled one-way valve, when the oil enters from the first oil inlet, it can flow to the oil chamber through the hydraulically controlled one-way valve, thereby pushing the piston rod upward. After the oil enters the oil chamber, the oil cannot retreat through the hydraulically controlled one-way valve, so that the position of the piston rod is limited, and the controllable duration of the piston rod maintaining the extended state after the piston rod is extended upward is achieved. In addition, the support assembly increases the stability of the pipeline, wherein the pipeline can be a pipeline connected to the first oil inlet or a pipeline connected to the second oil inlet.

[0004] However, although this type of precise pressure-controlled oil cylinder can be used to better effect, the auxiliary adjustment effect of the inner wall diameter of the air hole is not high, so that when the oil cylinder is used daily, the inner wall diameter of the air hole is consistent, which affects the precise adjustment effect of the air pressure inside the oil cylinder.

[0005] Therefore, in view of this, the shortcomings of the existing structure are studied and improved, and a hydraulic cylinder with precise pressure control is proposed. Utility Model Content

[0006] The purpose of the utility model is to provide a hydraulic cylinder with precise pressure control, so as to solve the problem in the above background technology that the auxiliary adjustment effect of the inner wall diameter of the air connection hole is not high.

[0007] The cam is provided with a first end fixedly mounted on the outside of the oil cylinder, and the second end is provided with a first end fixedly mounted on the outside of the oil cylinder, and the second end is connected with the oil cylinder to the oil cylinder.

[0008] Furthermore, two groups of the air connection holes and protective covers are provided, and the positions of the two groups of the air connection holes and protective covers are symmetrical with respect to the central axis of the oil cylinder body.

[0009] Furthermore, the outer wall of the turntable is provided with a spiral that meshes with the second inner spiral.

[0010] Furthermore, the sliding column forms a sliding structure between the turntable and the inclined slot and the sliding slot. There are three groups of sliding columns and inclined slots, and the positions of the three groups of sliding columns and inclined slots are equidistantly distributed about the central axis of the fixed block.

[0011] Furthermore, the adjustment blocks form a sliding structure through the sliding posts and the sliding grooves. There are three groups of adjustment blocks, and the three groups of adjustment blocks and the sliding posts are arranged in a one-to-one correspondence.

[0012] Furthermore, the outer wall profile of the adjusting block is fan-shaped.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] The utility model sets the adjustment block. When the auxiliary pressure cylinder is used in daily life through the air connecting hole, in order to improve the convenience of adjusting the inner diameter size of the connecting hole and achieve the effect of flexible adjustment of the air pressure inside the pressure cylinder, the turntable can be rotated through the threaded connection of the second inner spiral to drive the sliding column to slide synchronously along the inner wall of the inclined groove and the slide groove, and drive the adjustment block to perform centering movement along the outer wall of the vent hole, so as to achieve the effect of effectively adjusting the inner diameter of the vent hole and the air connecting hole, thereby playing the role of meeting the precise control of the pressure on the inner wall of the pressure cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the oil cylinder;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the oil cylinder in another direction;

[0017] Figure 3 Schematic diagram of the position distribution structure of the first inner spiral and the outer spiral;

[0018] Figure 4 Schematic diagram of the connection structure between the sliding column and the adjustment block.

[0019] In the figure: 1. Cylinder body; 2. Air connection hole; 3. Storage hook; 4. Protective cover; 5. First inner screw; 6. Outer screw; 7. Fixed block; 8. Turntable; 9. Second inner screw; 10. Sliding column; 11. Inclined groove; 12. Fixed plate; 13. Adjusting block; 14. Slide groove; 15. Air vent. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figure 1-Figure 4 As shown, a precise pressure-controlled oil cylinder comprises an oil cylinder body 1, an air hole 2 is provided on the outer wall of the oil cylinder body 1, a receiving hook 3 is fixedly connected to the outer wall of the oil cylinder body 1, a protective cover 4 is threadedly connected to the outer wall of the air hole 2, a first inner screw 5 is provided on the inner wall of the protective cover 4, an outer screw 6 is provided at the connection part between the outer wall of the air hole 2 and the first inner screw 5, a fixing block 7 is fixedly connected to the inner wall of the fixing block 7, a turntable 8 is threadedly connected to the inner wall of the fixing block 7, and the connection part between the inner wall of the fixing block 7 and the turntable 8 is opened. A second inner spiral 9 is provided, the outer wall of the turntable 8 is slidably connected to a sliding column 10, and a bevel 11 is provided at the connection portion between the outer wall of the turntable 8 and the sliding column 10. The inner side wall of the fixed block 7 is fixedly connected to a fixed plate 12 which is slidably connected to the outer wall of the sliding column 10, and a slide groove 14 is provided at the connection portion between the outer wall of the fixed plate 12 and the sliding column 10. The end of the sliding column 10 is fixedly connected to an adjusting block 13 which is slidably connected to the outer wall of the fixed plate 12, and a vent hole 15 is provided at the connection portion between the outer wall of the fixed plate 12 and the adjusting block 13.

[0022] Furthermore, two groups of air inlet holes 2 and protective covers 4 are provided, and the position distribution of the two groups of air inlet holes 2 and protective covers 4 are symmetrical about the central axis of the cylinder body 1. This is beneficial for achieving the effect of conveniently transmitting air pressure to the inner wall of the pressure cylinder by providing two groups of air inlet holes 2 and protective covers 4 whose position distribution is symmetrical about the central axis of the cylinder body 1.

[0023] Furthermore, the outer wall of the turntable 8 is provided with a spiral that meshes with the second inner spiral 9, which is conducive to achieving an effective self-locking effect after the turntable 8 rotates.

[0024] Furthermore, the sliding column 10 forms a sliding structure between the turntable 8 and the inclined groove 11 and the slide groove 14. There are three groups of sliding columns 10 and inclined grooves 11. The positions of the three groups of sliding columns 10 and inclined grooves 11 are equidistantly distributed about the central axis of the fixed block 7, which is conducive to the rotation of the turntable 8, driving the sliding column 10 to slide synchronously along the inner walls of the inclined groove 11 and the slide groove 14, and playing the role of driving the adjustment block 13 to slide in the center.

[0025] Furthermore, the adjustment block 13 forms a sliding structure between the sliding column 10 and the slide groove 14. There are three groups of adjustment blocks 13. The three groups of adjustment blocks 13 are arranged in a one-to-one correspondence with the sliding column 10, which is conducive to the sliding of the sliding column 10, driving the adjustment block 13 to slide along the inner wall of the slide groove 14, thereby effectively adjusting the inner diameter of the vent hole 15.

[0026] Furthermore, the outer wall profile of the regulating block 13 is fan-shaped, which is beneficial for achieving precise control of the pressure on the inner wall of the pressure cylinder through the setting of the outer wall profile of the regulating block 13 being fan-shaped.

[0027] Working principle: When using this kind of precise pressure-controlled pressure cylinder, when the pressure cylinder is used daily through the air connection hole 2 to assist the pressure cylinder, in order to improve the convenience of adjusting the inner diameter size of the connection hole 2 and achieve the effect of flexible adjustment of the air pressure inside the pressure cylinder, the turntable 8 can be rotated through the threaded connection of the second inner screw 9 to drive the sliding column 10 to slide synchronously along the inner wall of the inclined groove 11 and the slide groove 14, and drive the adjustment block 13 to perform centering movement along the outer wall of the vent hole 15, so as to achieve the effect of effectively adjusting the inner diameter of the vent hole 15 and the air connection hole 2, thereby meeting the role of precise control of the pressure on the inner wall of the pressure cylinder.

[0028] This is how the precise pressure-controlled hydraulic cylinder works.

[0029] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A precise pressure-controlled oil cylinder, comprising an oil cylinder body (1), characterized in that: The outer wall of the oil cylinder body (1) is provided with an air receiving hole (2), the outer wall of the oil cylinder body (1) is fixedly connected with a receiving hook (3), the outer wall of the air receiving hole (2) is threadedly connected with a protective cover (4), the inner wall of the protective cover (4) is provided with a first inner screw (5), the connection portion between the outer wall of the air receiving hole (2) and the first inner screw (5) is provided with an outer screw (6), the inner wall of the air receiving hole (2) is fixedly connected with a fixing block (7), the inner side wall of the fixing block (7) is threadedly connected with a rotating disk (8), and the connection portion between the inner side wall of the fixing block (7) and the rotating disk (8) is provided with a second inner screw (9). The outer wall of the turntable (8) is slidably connected to a sliding column (10), and a slant groove (11) is provided at the connection portion between the outer wall of the turntable (8) and the sliding column (10). The inner side wall of the fixed block (7) is fixedly connected to a fixed plate (12) slidably connected to the outer wall of the sliding column (10), and a sliding groove (14) is provided at the connection portion between the outer wall of the fixed plate (12) and the sliding column (10). The end of the sliding column (10) is fixedly connected to an adjusting block (13) slidably connected to the outer wall of the fixed plate (12), and a vent hole (15) is provided at the connection portion between the outer wall of the fixed plate (12) and the adjusting block (13).

2. The precise pressure-controlled oil cylinder according to claim 1, characterized in that: The air connection holes (2) and protective covers (4) are each provided in two groups, and the positions of the two groups of air connection holes (2) and protective covers (4) are distributed symmetrically with respect to the central axis of the oil cylinder body (1).

3. The precise pressure-controlled oil cylinder according to claim 1, characterized in that: The outer wall of the turntable (8) is provided with a spiral that meshes with the second inner spiral (9).

4. The precise pressure-controlled oil cylinder according to claim 1, characterized in that: The sliding column (10) forms a sliding structure between the turntable (8) and the inclined groove (11) and the sliding groove (14). The sliding column (10) and the inclined groove (11) are each provided in three groups, and the positions of the three groups of sliding columns (10) and inclined grooves (11) are equidistantly distributed about the central axis of the fixed block (7).

5. The precise pressure-controlled oil cylinder according to claim 1, characterized in that: The adjusting block (13) forms a sliding structure between the sliding column (10) and the sliding groove (14). The adjusting block (13) is provided in three groups, and the three groups of adjusting blocks (13) and the sliding column (10) are provided in a one-to-one correspondence.

6. The precise pressure-controlled oil cylinder according to claim 1, characterized in that: The outer wall profile of the regulating block (13) is fan-shaped.

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