Hydraulic piston structure suitable for photovoltaic industry and hydraulic cylinder

Abstract

The utility model provides a hydraulic piston structure and a hydraulic cylinder suitable for the photovoltaic industry, and relates to the technical field of hydraulic cylinders, the hydraulic piston structure suitable for the photovoltaic industry comprises a piston rod, a main piston and an auxiliary ring, the main piston and the auxiliary ring are both installed on the piston rod, and pressurization slopes are arranged on the end faces of the two sides of the auxiliary ring. A cavity structure is arranged between the pressurizing inclined faces on the two sides, and displacement grooves are formed in the pressurizing inclined faces and used for compensating micro displacement of the pressurizing inclined faces due to hydraulic oil pressure. Through the arrangement of the auxiliary ring, when the main piston acts, the auxiliary ring can make contact with the inner wall of the hydraulic cylinder, so that the auxiliary supporting effect on the main piston is achieved, the abrasion speed of the main piston is reduced, and the service life of the hydraulic cylinder is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic cylinder technical field especially a kind of hydraulic piston structure and hydraulic cylinder suitable for photovoltaic industry. BACKGROUND

[0002] Conventional hydraulic cylinder is designed according to vertical work or horizontal work, and in photovoltaic industry, hydraulic cylinder is all installed obliquely, and the piston of ordinary hydraulic cylinder will accelerate wear under long-term oblique working condition, causing internal leakage of hydraulic cylinder, leading to maintenance cost increase, and the present application is proposed to solve the above-mentioned defects. SUMMARY

[0003] The utility model discloses a kind of hydraulic piston structure and hydraulic cylinder suitable for photovoltaic industry, solve the problem that conventional hydraulic cylinder piston is worn too fast under the condition of long-term oblique use, prone to hydraulic cylinder failure.

[0004] To solve the above problems, the utility model provides a kind of hydraulic piston structure suitable for photovoltaic industry, including piston rod, main piston and auxiliary ring, the main piston and auxiliary ring are installed on piston rod, the two side end surfaces of the auxiliary ring are provided with pressure-increasing bevel, and the pressure-increasing bevel between two sides has cavity structure, displacement groove is provided on the pressure-increasing bevel, the displacement groove is used to compensate the trace displacement of pressure-increasing bevel due to hydraulic oil pressure, so that the contact of auxiliary ring and the inner wall of hydraulic cylinder is more closely, auxiliary ring is worn after long-term use, leading to the gap between auxiliary ring and the inside of hydraulic cylinder increases, pressure-increasing bevel and displacement groove can compensate the gap of the outer circle of auxiliary ring, so that the gap is reduced.

[0005] According to the utility model one embodiment, the auxiliary ring is provided with damping hole, and the damping hole is annularly distributed and arranged in several groups, the pressure of hydraulic oil is reduced after passing through the damping hole, and the design of damping hole can isolate the pressure fluctuation of hydraulic oil, so that the damage of sealing ring on main piston caused by pressure fluctuation of hydraulic oil can be effectively reduced.

[0006] According to the utility model one embodiment, the auxiliary ring is provided with at least two groups, and is arranged on the two sides of main piston respectively, and has gap between main piston, so that main piston is effectively protected when extending and retracting.

[0007] According to the utility model one embodiment, the diameter of main piston is D, the distance between main piston and auxiliary ring is L, and D>L>.D.

[0008] According to the utility model one embodiment, the main piston is installed with the anti -wear ring and the sealing ring, the main piston is provided with sealing ring installation groove and anti -wear ring installation groove, sealing ring installation groove and anti -wear ring installation groove are spaced apart a certain distance, the cross section of sealing ring can be round also can be other cross section shape's sealing ring, the effect of anti -wear ring is to protect the inner wall of oil cylinder, reduces the abrasion caused by the friction of piston on the inner wall. Meanwhile, it can also prevent the piston from sliding in the oil cylinder, and the friction force is too large to cause sealing failure, which is very suitable for the working occasion of the inclined installation of the hydraulic cylinder in the photovoltaic industry.

[0009] According to the utility model one embodiment, the sealing ring is provided with at least two groups on the main piston, and the anti -wear ring is arranged at the position between the two sealing rings.

[0010] According to the utility model one embodiment, the anti -wear ring is of cloth phenolic plastic, polyurethane, polytetrafluoroethylene material and other materials with similar properties.

[0011] According to the utility model one embodiment, the anti -wear ring is of rectangular cross section.

[0012] According to the utility model one embodiment, a plurality of displacement grooves are arranged on each booster slope, generally two groups are arranged.

[0013] A kind of hydraulic cylinder, including the hydraulic piston structure suitable for photovoltaic industry of above.

[0014] The utility model has the advantages that, by the setting of auxiliary ring, when the main piston acts, auxiliary ring can contact with the inner wall of hydraulic cylinder, so as to achieve the effect of auxiliary supporting of main piston, slow down the abrasion speed of main piston, improve the service life of hydraulic cylinder, and in continuous use, by the self-adapting deformation of auxiliary ring, the gap between auxiliary ring and the inner wall of hydraulic cylinder is compensated;In addition, in the scheme, by being provided with anti -wear ring on main piston, the abrasion caused by the friction of piston on the inner wall can be reduced, the friction force is too large to cause sealing failure when the piston slides in the oil cylinder, which is very suitable for the working occasion of the inclined installation of the hydraulic cylinder in the photovoltaic industry. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model is further described below in connection with drawings and examples.

[0016] Figure 1 It is overall structure schematic view for the hydraulic piston structure suitable for photovoltaic industry;

[0017] Figure 2 It is structure schematic view for auxiliary ring;

[0018] Figure 3 It is cross section structure schematic view for auxiliary ring;

[0019] Figure 4 is a schematic view of the structure of the main piston;

[0020] Figure 5 is a schematic view of the cross-sectional structure of the main piston. DETAILED DESCRIPTION

[0021] The following description is merely intended for the purpose of illustrating the present application and is not intended to limit the present application. Respective embodiments are described in the following description, but those skilled in the art can conceive other obvious modifications and changes without departing from the spirit and scope of the present application. The basic principles defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other schemes without departing from the spirit and scope of the present application.

[0022] Embodiment 1

[0023] A hydraulic piston structure suitable for the photovoltaic industry, as shown in Figure 1 , comprising a piston rod 3, a main piston 2 and an auxiliary ring 1, the main piston 2 and the auxiliary ring 1 are both installed on the piston rod 3, in this embodiment, the auxiliary ring 1 is provided with two groups, which are respectively arranged on both sides of the main piston 2, and there is a gap between the main piston 2 and the auxiliary ring 1, so that the main piston is effectively protected during the extension and retraction movement.

[0024] As shown in Figure 2 , Figure 3 , the auxiliary ring 1 is provided with a piston rod mounting hole 14, and the inner wall of the piston rod mounting hole 14 is provided with threads for mounting and fixing the auxiliary ring 1 and the piston rod 3.

[0025] The two side end faces of the auxiliary ring 1 are provided with a booster inclined surface 12 around the position of the piston rod mounting hole 14, the booster inclined surface 12 is provided with two groups of displacement grooves 11, and the booster inclined surfaces 12 on both sides have a cavity structure, and the booster inclined surface 12 gradually inclines outward from the center to the outer circle, forming a cavity with a trapezoidal cross section inside.

[0026] As shown in Figure 3 , when the pressure of the hydraulic oil acts on the booster inclined surface 12, a radial component force Fr is generated, and the displacement groove 11 compensates for the slight displacement of the booster inclined surface 12 due to the component force Fr, so that the contact between the auxiliary ring and the inner wall of the hydraulic cylinder is more closely.

[0027] After long-term use, the auxiliary ring 1 is worn out, resulting in an increase in the gap between the auxiliary ring 1 and the inside of the hydraulic cylinder, and the booster inclined surface 12 and the displacement groove 11 can compensate for the slight radial displacement of the outer circle of the auxiliary ring, compensate for the gap, and reduce the gap.

[0028] Embodiment 2

[0029] On the basis of embodiment 1, the auxiliary ring 1 is provided with damping holes 13, the damping holes 13 are annularly distributed in several groups, the pressure of the hydraulic oil is reduced after passing through the damping holes 13, the pressure fluctuation of the hydraulic oil caused by the wind in the photovoltaic industry will cause damage to the piston, the design of the damping holes 13 can isolate the pressure fluctuation of the hydraulic oil, and damage to the sealing ring 24 on the main piston 2 caused by the pressure fluctuation of the hydraulic oil can be effectively reduced.

[0030] Optionally, the diameter of the main piston 2 is D, the distance between the main piston 2 and the auxiliary ring 1 is L, and 2D>L>0.1D.

[0031] Embodiment 3:

[0032] On the basis of embodiment 1 or 2, as Figure 4 、 Figure 5 The main piston 2 is provided with two groups of sealing ring installation grooves 21 and one group of anti-wear ring installation grooves 22, the sealing ring installation grooves 21 and the anti-wear ring installation grooves 22 are spaced apart by a certain distance, the sealing ring installation grooves 21 and the anti-wear ring installation grooves 22 are respectively used for installing the sealing ring 24 and the anti-wear ring 23, and the anti-wear ring 23 is arranged at a position between the two sealing rings 24.

[0033] The cross section of the sealing ring 24 can be circular or other cross section shape sealing ring 24, the anti-wear ring 23 is preferably rectangular cross section, the outer diameter of the anti-wear ring 23 is smaller than the maximum outer diameter of the sealing ring 24 in the compressed state, and the anti-wear ring 23 is made of cloth phenolic plastic, polyurethane, polytetrafluoroethylene material or other materials with similar properties.

[0034] The anti-wear ring 23 can protect the inner wall of the oil cylinder and reduce the wear caused by the friction of the piston on the inner wall. At the same time, it can also prevent the piston from sliding in the oil cylinder and causing seal failure due to excessive friction, and is very suitable for the working conditions of the hydraulic cylinder installed in the photovoltaic industry.

[0035] A hydraulic cylinder comprising the hydraulic piston structure suitable for the photovoltaic industry in any of the above embodiments.

[0036] Those skilled in the art should understand that the above description and the embodiments of the utility model shown in the drawings are only as examples and do not limit the utility model. The purpose of the utility model has been completely and effectively realized. The function and structure principle of the utility model has been shown and explained in the embodiments, and the implementation of the utility model can be any deformation and modification without departing from the principle.

Claims

1. A hydraulic piston structure suitable for the photovoltaic industry, characterized by: The hydraulic piston structure for photovoltaic industry comprises a piston rod (3), a main piston (2) and an auxiliary ring (1), the main piston (2) and the auxiliary ring (1) are installed on the piston rod (3), the auxiliary ring (1) is provided with a pressurization slope (12) on both side end faces, the pressurization slopes (12) on both sides have a cavity structure, the pressurization slope (12) is provided with a displacement groove (11), and the displacement groove (11) is used for compensating the micro displacement of the pressurization slope (12) caused by the hydraulic oil pressure.

2. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 1 wherein: The auxiliary ring (1) is provided with a damping hole (13).

3. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 2, wherein: The auxiliary ring (1) is provided with at least two groups, which are arranged on both sides of the main piston (2) and have a gap with the main piston (2).

4. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 3 wherein: The diameter of the main piston (2) is D, the distance between the main piston (2) and the auxiliary ring (1) is L, and 2D>L>0.1D.

5. The hydraulic piston structure suitable for photovoltaic industry as claimed in any one of claims 1 to 4, wherein: The main piston (2) is provided with an anti-wear ring (23) and a sealing ring (24).

6. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 5 wherein: The sealing ring (24) is provided with at least two groups on the main piston (2), and the anti-wear ring (23) is arranged between the two sealing rings (24).

7. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 6 wherein: The anti-wear ring (23) is made of cloth phenolic plastic, polyurethane or polytetrafluoroethylene.

8. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 7, wherein: The anti-wear ring (23) is a rectangular section.

9. The hydraulic piston structure suitable for photovoltaic industry as claimed in claim 1 wherein: Each pressurization slope (12) is provided with a plurality of displacement grooves (11).

10. A hydraulic cylinder characterized by: The hydraulic piston structure for photovoltaic industry comprises a piston rod (3), a main piston (2) and an auxiliary ring (1), the main piston (2) and the auxiliary ring (1) are installed on the piston rod (3), the auxiliary ring (1) is provided with a pressurization slope (12) on both side end faces, the pressurization slopes (12) on both sides have a cavity structure, the pressurization slope (12) is provided with a displacement groove (11), and the displacement groove (11) is used for compensating the micro displacement of the pressurization slope (12) caused by the hydraulic oil pressure.

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