Spiral swing oil cylinder with pressure reduction structure

Abstract

The utility model discloses a spiral swing oil cylinder with a pressure reduction structure, which relates to the field of spiral swing oil cylinders and comprises a spiral swing oil cylinder main body, an oil delivery pipe is fixedly arranged at the top end of the spiral swing oil cylinder main body, a pressure reduction disc is arranged in the oil delivery pipe, and the outer end of the pressure reduction disc is contacted with the inner wall of the oil delivery pipe. A metering assembly is arranged on the front side of the oil conveying pipe and comprises an external connecting pipe fixedly arranged on the front side of the oil conveying pipe, and an adjusting rod is fixedly arranged on the front side of the pressure reducing disc. The pressure reducing disc is driven by the adjusting rod to rotate in the oil conveying pipe, so that the angle of the pressure reducing disc is adjusted, the pressure reducing effect is achieved, the pointer rotates along with the adjusting rod in the rotating process, and the rotating angle of the pressure reducing disc can be judged according to the scale pointed by the pointer on the dial. Therefore, the pressure reducing disc can be fixed when rotating to a corresponding angle, so that the rotation of the pressure reducing disc is more accurate, and the adjusting precision is also greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of spiral swing oil cylinders, in particular to a spiral swing oil cylinder with a decompression structure. Background Art

[0002] The spiral swing cylinder is a special hydraulic cylinder that drives the piston to reciprocate in a straight line through hydraulic pressure. During the movement, the piston engages with the spiral teeth of the spiral rod through the spiral teeth on the inside, thereby driving the spiral rod to rotate, thereby achieving swinging.

[0003] The principle of the spiral swing cylinder is similar to that of an ordinary hydraulic cylinder, which converts hydraulic pressure into mechanical energy. Therefore, it is used in some equipment with large loads and requires swinging, such as mining equipment, forklifts, etc.

[0004] During use, the hydraulic swing cylinder needs to withstand a large oil pressure. In order to avoid damage caused by excessive oil pressure, a decompression structure is often provided in the prior art, such as a spiral swing cylinder with a decompression structure with publication number CN216044723U.

[0005] In the prior art, the pressure reducing disk rotates under the control of the screw rod, and the rotation range of the pressure reducing disk is limited only by the limit plate. The rotation angle of the pressure reducing disk cannot be accurately controlled, so the adjustment accuracy needs to be improved. Utility Model Content

[0006] In view of the deficiencies in the prior art, the utility model provides a spiral swing cylinder with a decompression structure. The rotation angle of the decompression plate can be judged by the scale pointed to by the pointer on the dial, so that the decompression plate can be fixed when it is rotated to the corresponding angle. This makes the rotation of the decompression plate more precise and the adjustment accuracy is greatly improved, which can effectively solve the problems in the background technology.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is: a spiral swing oil cylinder with a decompression structure, comprising a spiral swing oil cylinder body, an oil delivery pipe is fixedly arranged at the top of the spiral swing oil cylinder body, a decompression disk is arranged inside the oil delivery pipe, and the outer end of the decompression disk is in contact with the inner wall of the oil delivery pipe;

[0008] A metering assembly is provided at the front side of the oil pipeline, and the metering assembly includes an external pipe fixedly provided at the front side of the oil pipeline. An adjusting rod is fixedly provided at the front side of the pressure reducing disc, and the front end of the adjusting rod extends to the front side of the oil pipeline through the external pipe. The adjusting rod is movably connected to the oil pipeline through a sealed bearing.

[0009] A dial is fixedly provided at the outer end of the external pipe, and a pointer is fixedly provided at the top end of the adjusting rod, and the pointer is perpendicular to the plane where the pressure reducing disk is located.

[0010] Furthermore, two limiting protrusions are fixedly provided on the front side of the dial, and the limiting protrusions can block the rotation of the pointer;

[0011] A handle is fixedly provided at the front end of the adjusting rod to facilitate driving the adjusting rod to rotate.

[0012] Furthermore, a mounting seat is provided at the bottom end of the spiral swing cylinder body, the spiral swing cylinder body is embedded in the top of the mounting seat, two cover plates are provided on the top of the mounting seat through bolts, and the spiral swing cylinder body is clamped between the cover plates and the mounting seat.

[0013] Furthermore, a sleeve is fixedly provided on the rear side of the oil pipeline, and an extension rod is fixedly provided on the rear side of the pressure reducing disk. The rear end of the extension rod extends into the interior of the sleeve. The extension rod is movably connected to the oil pipeline through a sealed bearing. A fastening bolt is threadedly provided on the top of the sleeve to fix the extension rod, thereby fixing the position of the pressure reducing disk.

[0014] Furthermore, a sensing component is provided on the rear side of the oil pipeline, and the sensing component is located at the bottom of the pressure reducing disk. The sensing component includes a transparent scale cylinder fixed on the rear side of the oil pipeline and connected to the oil pipeline, so that the pressure inside the two is equal, and an air hole for balancing the air pressure is opened at the rear end of the transparent scale cylinder.

[0015] Furthermore, a sealing plug is provided inside the transparent scale cylinder, and a sealing gasket in contact with the inner wall of the transparent scale cylinder is fixedly provided at the outer end of the sealing plug. The oil pressure is judged by the position of the sealing plug on the inner wall of the transparent scale cylinder, and a spring connected to the inner wall of the transparent scale cylinder is fixedly provided on the rear side of the sealing plug.

[0016] Compared with the prior art, the utility model provides a spiral swing cylinder with a decompression structure, which has the following beneficial effects:

[0017] The pressure reducing disc is driven to rotate inside the oil pipeline by the adjusting rod, so as to adjust the angle of the pressure reducing disc, thereby achieving the effect of pressure reducing. When the adjusting rod rotates, the pointer rotates accordingly. The rotation angle of the pressure reducing disc can be judged by the scale pointed by the pointer on the dial, so that the pressure reducing disc can be fixed when it rotates to the corresponding angle, which makes the rotation of the pressure reducing disc more precise and the adjustment accuracy is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the main structural diagram of the utility model;

[0019] Figure 2 It is a rear view structural diagram of the utility model;

[0020] Figure 3 For the utility model Figure 1 Enlarged view of part A in the middle;

[0021] Figure 4 It is a side sectional view of the oil pipeline of the utility model;

[0022] Figure 5 This is a diagram showing the internal structure of the sensing component of the present utility model.

[0023] In the figure: 1. spiral swing cylinder body; 2. cover plate; 3. mounting seat; 4. oil pipeline; 5. metering component; 501. external pipe; 502. dial; 503. pointer; 504. limit protrusion; 505. handle; 6. sleeve; 7. sensing component; 701. transparent scale cylinder; 702. sealing plug; 703. spring; 704. air vent; 8. pressure relief plate; 9. extension rod; 10. adjustment rod. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] In order to address the shortcomings of the existing technology, such as Figure 1-5 As shown, the utility model provides a spiral swing oil cylinder with a decompression structure, including a spiral swing oil cylinder body 1, an oil delivery pipe 4 is fixedly arranged on the top of the spiral swing oil cylinder body 1, a decompression disc 8 is arranged inside the oil delivery pipe 4, and the outer end of the decompression disc 8 is in contact with the inner wall of the oil delivery pipe 4;

[0026] A metering assembly 5 is provided at the front side of the oil delivery pipe 4, and the metering assembly 5 includes an external pipe 501 fixedly provided at the front side of the oil delivery pipe 4. An adjusting rod 10 is fixedly provided at the front side of the pressure reducing disc 8. The front end of the adjusting rod 10 extends to the front side of the oil delivery pipe 4 through the external pipe 501. The adjusting rod 10 is movably connected to the oil delivery pipe 4 through a sealed bearing.

[0027] A dial 502 is fixedly disposed at the outer end of the external tube 501 , and a pointer 503 is fixedly disposed at the top end of the adjustment rod 10 , and the pointer 503 is perpendicular to the plane where the pressure reducing disk 8 is located.

[0028] Hydraulic oil is input into the spiral swing cylinder body 1 through the oil delivery pipe 4 to drive the spiral swing cylinder body 1 to operate. During the operation, if the oil pressure inside the spiral swing cylinder body 1 is too large, the adjusting rod 10 can be rotated to drive the pressure reducing plate 8 to rotate inside the oil delivery pipe 4. After the pressure reducing plate 8 rotates, the input efficiency of the hydraulic oil into the spiral swing cylinder body 1 can be adjusted. When the input efficiency is reduced, the oil pressure inside the spiral swing cylinder body 1 will naturally decrease, thereby playing a role in pressure reduction. When the adjusting rod 10 rotates, the pointer 503 rotates accordingly. The rotation angle of the pressure reducing plate 8 can be judged by the scale pointed to by the pointer 503 on the dial 502, so that the pressure reducing plate 8 can be fixed when it rotates to the corresponding angle, which makes the rotation of the pressure reducing plate 8 more precise and the adjustment accuracy is greatly improved.

[0029] In order to limit the rotation range of the pressure relief disc 8, as Figure 3 , 4 As shown, two limiting protrusions 504 are fixedly provided on the front side of the dial 502, and the limiting protrusions 504 can block the rotation of the pointer 503;

[0030] A handle 505 is fixedly provided at the front end of the adjusting rod 10 to facilitate driving the adjusting rod 10 to rotate.

[0031] The handle 505 is rotated to drive the adjusting rod 10 to rotate, thereby adjusting the angle of the decompression disk 8 , and the limiting protrusion 504 can play a limiting role when the pointer 503 rotates, thereby limiting the rotation range of the decompression disk 8 .

[0032] In order to facilitate the installation of the spiral swing cylinder body 1, as Figure 1 As shown, a mounting seat 3 is provided at the bottom end of the spiral swing cylinder body 1, and the spiral swing cylinder body 1 is embedded in the top of the mounting seat 3. Two cover plates 2 are provided on the top of the mounting seat 3 through bolts, and the spiral swing cylinder body 1 is clamped between the cover plates 2 and the mounting seat 3.

[0033] The spiral swing cylinder body 1 is placed in the depression at the top of the mounting seat 3, and then the cover plate 2 is covered on the top of the spiral swing cylinder body 1 and connected to the mounting seat 3 by bolts, so that the spiral swing cylinder body 1 is clamped and fixed.

[0034] In order to fix the position of the pressure relief disc 8, as Figure 2 , 4 As shown, a sleeve 6 is fixedly provided on the rear side of the oil pipeline 4, and an extension rod 9 is fixedly provided on the rear side of the pressure reducing disk 8. The rear end of the extension rod 9 extends into the interior of the sleeve 6. The extension rod 9 is movably connected to the oil pipeline 4 through a sealed bearing. A fastening bolt is threadedly provided on the top of the sleeve 6 to fix the extension rod 9 and further fix the position of the pressure reducing disk 8.

[0035] During the process of adjusting the rotation of the decompression disc 8, the extension rod 9 connected to the decompression disc 8 also rotates synchronously with the decompression disc 8. Therefore, when the decompression disc 8 is adjusted to the corresponding angle, the fastening bolts on the lowering sleeve 6 are tightened to fix the decompression disc 8 and the extension rod 9 at the same time.

[0036] In the process of adjusting the pressure reducing plate 8, it is necessary to judge the oil pressure inside the spiral swing cylinder body 1, such as Figure 2 , 4 As shown in Figures 5 and 6, a sensing component 7 is provided at the rear side of the oil pipeline 4. The sensing component 7 is located at the bottom of the pressure reducing disk 8. The sensing component 7 includes a transparent scale cylinder 701 fixedly provided at the rear side of the oil pipeline 4 and communicated with the oil pipeline 4, so that the pressure inside the two is equal. An air hole 704 for balancing the air pressure is provided at the rear end of the transparent scale cylinder 701.

[0037] A sealing plug 702 is provided inside the transparent scale cylinder 701, and a sealing gasket in contact with the inner wall of the transparent scale cylinder 701 is fixedly provided at the outer end of the sealing plug 702. The oil pressure is judged by the position of the sealing plug 702 on the inner wall of the transparent scale cylinder 701, and a spring 703 connected to the inner wall of the transparent scale cylinder 701 is fixedly provided on the rear side of the sealing plug 702.

[0038] Since the transparent scale cylinder 701 is connected to the inside of the oil pipeline 4, and the sensing component 7 is located at the bottom of the pressure reducing disk 8, the oil pressure inside the transparent scale cylinder 701 is always the same as that inside the spiral swing cylinder body 1. Under the action of the oil pressure, the sealing plug 702 is pushed and moves inside the transparent scale cylinder 701, and the spring 703 is also compressed. By observing the position of the sealing plug 702 inside the transparent scale cylinder 701, the oil pressure changes inside the spiral swing cylinder body 1 can be known in real time during the pressure reduction process. During the movement of the sealing plug 702, the air vent 704 makes the air pressure on the side where the spring 703 is located the same as that of the outside world, thereby preventing the air pressure from hindering the movement of the sealing plug 702.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A spiral swing oil cylinder with a decompression structure, comprising a spiral swing oil cylinder body (1), wherein an oil delivery pipe (4) is fixedly provided at the top of the spiral swing oil cylinder body (1), and characterized in that: A pressure reducing disc (8) is provided inside the oil delivery pipe (4), and the outer end of the pressure reducing disc (8) is in contact with the inner wall of the oil delivery pipe (4); A metering assembly (5) is provided on the front side of the oil delivery pipe (4), and the metering assembly (5) comprises an external pipe (501) fixedly provided on the front side of the oil delivery pipe (4); an adjusting rod (10) is fixedly provided on the front side of the pressure reducing disk (8); a front end of the adjusting rod (10) extends to the front side of the oil delivery pipe (4) through the external pipe (501); and the adjusting rod (10) is movably connected to the oil delivery pipe (4) via a sealed bearing; A dial (502) is fixedly provided at the outer end of the external tube (501), and a pointer (503) is fixedly provided at the top end of the adjustment rod (10), wherein the pointer (503) is perpendicular to the plane where the pressure reducing disk (8) is located.

2. The spiral swing cylinder with a decompression structure according to claim 1 is characterized in that: Two limiting protrusions (504) are fixedly provided on the front side of the scale plate (502), and the limiting protrusions (504) are capable of blocking the rotation of the pointer (503); A handle (505) is fixedly provided at the front end of the adjusting rod (10).

3. The spiral swing cylinder with a decompression structure according to claim 1, characterized in that: A mounting seat (3) is provided at the bottom end of the spiral swing cylinder body (1), the spiral swing cylinder body (1) is embedded in the top end of the mounting seat (3), two cover plates (2) are provided at the top end of the mounting seat (3) via bolts, and the spiral swing cylinder body (1) is clamped between the cover plates (2) and the mounting seat (3).

4. The spiral swing cylinder with a decompression structure according to claim 1, characterized in that: A sleeve (6) is fixedly provided on the rear side of the oil delivery pipe (4), and an extension rod (9) is fixedly provided on the rear side of the pressure reducing disc (8). The rear end of the extension rod (9) extends into the interior of the sleeve (6). The extension rod (9) is movably connected to the oil delivery pipe (4) via a sealing bearing, and a fastening bolt is threadedly provided on the top end of the sleeve (6).

5. The spiral swing cylinder with a decompression structure according to claim 1, characterized in that: A sensing component (7) is provided at the rear side of the oil delivery pipe (4), and the sensing component (7) is located at the bottom of the pressure reducing plate (8). The sensing component (7) comprises a transparent scale cylinder (701) fixedly arranged at the rear side of the oil delivery pipe (4) and communicating with the oil delivery pipe (4), and a vent hole (704) for balancing air pressure is provided at the rear end of the transparent scale cylinder (701).

6. The spiral swing cylinder with a decompression structure according to claim 5, characterized in that: A sealing plug (702) is provided inside the transparent graduated cylinder (701), a sealing gasket in contact with the inner wall of the transparent graduated cylinder (701) is fixedly provided at the outer end of the sealing plug (702), and a spring (703) connected to the inner wall of the transparent graduated cylinder (701) is fixedly provided at the rear side of the sealing plug (702).

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