A hydraulic shaft

Abstract

This utility model discloses a hydraulic shaft, belonging to the technical field of hydraulic shafts. It includes a cylinder body, with a first flange ring fixedly connected to the outer wall of the cylinder body, a cylinder head fixedly connected to the end of the cylinder body, and a piston rod inserted into the inside of the cylinder head. A second flange ring is fixedly connected to the outer wall of the piston rod, and a piston ring is fixedly connected to one end of the piston rod located inside the cylinder body. A support assembly is also included, connected between the first and second flange rings. This support assembly enhances the support strength of the hydraulic shaft and provides protection for the piston rod. Through the arrangement of the support assembly, annular auxiliary support is provided by an array of hexagonal shafts, thereby enhancing the hydraulic shaft and preventing deformation due to the piston rod being supported alone, thus improving its support safety. Simultaneously, the annular distribution of the support assembly provides protection for the piston rod surface, preventing external particles from contacting the piston rod surface.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic shaft technology, specifically a hydraulic shaft. Background Technology

[0002] A hydraulic support shaft, or simply a hydraulic shaft, is an industrial component primarily used to provide functions such as support, cushioning, braking, height adjustment, and angle adjustment. The working principle of a hydraulic support shaft relies on the static pressure of a liquid medium to accumulate, transfer, and amplify energy, thereby achieving a lighter, more scientific, and maximized mechanical function.

[0003] An investigation revealed that a Chinese utility model patent (publication number: CN220706128U) discloses a hydraulic support shaft, comprising a hydraulic cylinder and a support shaft body. The support shaft body extends from the middle of the hydraulic cylinder and also includes a secondary support mechanism. The secondary support mechanism includes an outer sleeve, a mating plate, an L-shaped top, a sleeve support plate, a mating plate, a support plate, a fixed cylinder, and a hydraulic support rod. An outer sleeve is screwed onto the shaft of the support shaft body, and mating plates are symmetrically welded to the support shaft body on both sides of the hydraulic cylinder. An L-shaped top is welded to the upper handle of the mating plate. A secondary support mechanism is provided between the hydraulic cylinder and its matching support shaft body. The sleeve support plate of the secondary support mechanism is hydraulically supported by the hydraulic support rod at the fixed cylinder. At the same time, the support shaft body is reinforced by the outer sleeve and mating plate of the secondary support mechanism to form a composite reinforced shaft for force support, effectively preventing the support shaft body of the hydraulic cylinder from deforming due to a single material structure under stress.

[0004] Although the aforementioned patent can provide auxiliary support for the shaft under stress through the secondary support mechanism, its support is affected by its distribution position and cannot effectively support and enhance the shaft in all directions. Therefore, when the tilt direction is different, the shaft will still deform under severe pressure. At the same time, the shaft is supported by the guide sleeve. Therefore, when the shaft tilts, it first compresses the guide sleeve. If the bearing capacity of the guide sleeve is low, the shaft will deflect due to the breakage of the guide sleeve, causing the shaft to deform.

[0005] Therefore, this utility model provides a hydraulic shaft to solve the above problems. Utility Model Content

[0006] (a) Technical problems to be solved

[0007] This invention provides a hydraulic shaft, which aims to solve the problems mentioned in the background art.

[0008] (II) Technical Solution

[0009] To achieve the above objectives, the present invention provides the following technical solution: a hydraulic shaft, including a cylinder body, a first flange ring fixedly connected to the outer wall of the cylinder body, a cylinder cover fixedly connected to the end of the cylinder body, and a piston rod inserted into the inside of the cylinder cover, a second flange ring fixedly connected to the outer wall of the piston rod, and a piston ring fixedly connected to one end of the piston rod located inside the cylinder body.

[0010] A support assembly is connected between a first flange ring and a second flange ring, and the support assembly is used to enhance the support strength of the hydraulic shaft and to provide cover and protection for the piston rod;

[0011] A multi-stage guide sleeve is fixedly connected to the inner wall of the cylinder head. The multi-stage guide sleeve includes a main ring sleeve, and a secondary ring sleeve is fixedly connected to the inner wall of the main ring sleeve. The secondary ring sleeve has honeycomb holes evenly distributed on it, and a piston rod passes through the interior of the secondary ring sleeve.

[0012] As a preferred technical solution of this application, the first flange ring and the second flange ring have the same outer diameter, the first flange ring and the second flange ring are evenly provided with threaded holes on their circumferences, and the first flange ring is also provided with a hydraulic sleeve.

[0013] As a preferred technical solution of this application, the support component includes a first positioning ring, a composite sleeve fixedly connected to the bottom of the first positioning ring, an outer sleeve sleeved on the outer wall of the composite sleeve, a second positioning ring fixedly connected to the bottom of the outer sleeve, a guide shaft provided inside the outer sleeve, and the guide shaft fixedly connected to the upper surface of the second positioning ring.

[0014] As a preferred technical solution of this application, the inner diameter of the first positioning ring and the second positioning ring is equal to the outer diameter of the first flange ring. The first positioning ring and the second positioning ring are provided with positioning holes on their circumferences corresponding to the threaded holes of the first flange ring, and bolts are passed through the positioning holes and connected to the threaded holes.

[0015] As a preferred technical solution of this application, the composite sleeve is composed of a circumferential array of several hexagonal sleeves, and a guide shaft is inserted into the interior of each hexagonal sleeve.

[0016] As a preferred technical solution of this application, the main ring is made of tungsten carbide, the honeycomb holes are axially flared at an inclination of 45°, and the inner wall of the honeycomb holes is sprayed with a mixture of aluminum oxide and titanium dioxide.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this application are as follows:

[0019] 1. This utility model, through the setting of support components, uses an array of hexagonal shafts for ring-shaped auxiliary support, thereby achieving auxiliary reinforcement of the hydraulic shaft, avoiding deformation due to the piston rod being supported alone, improving its support safety. At the same time, its ring-shaped distribution can cover and protect the surface of the piston rod, preventing external particles from contacting the piston rod surface and causing piston sliding obstruction, thereby improving the service life of the piston rod.

[0020] 2. This utility model improves its load-bearing capacity through multi-stage ring support, ensuring the stability of the piston rod's axial movement. At the same time, by designing a honeycomb damping structure on the inner wall of the secondary ring sleeve, it effectively disperses stress concentration, suppresses deformation of the guide sleeve, and improves its service life while ensuring the stability and safety of the piston rod support. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall exploded structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the overall structure of the present utility model;

[0023] Figure 3 This is a schematic diagram of the guide shaft cross-section sleeved state structure of this utility model;

[0024] Figure 4 This is a schematic cross-sectional view of the piston rod axis of this utility model;

[0025] Figure 5 For the present utility model Figure 4 A magnified structural diagram of A in the middle;

[0026] Figure 6 This is a schematic diagram of the exploded structure of the multi-stage guide sleeve of this utility model.

[0027] In the picture:

[0028] 1. Cylinder block; 11. First flange ring; 2. Piston rod; 21. Second flange ring; 3. Support assembly; 31. First positioning ring; 32. Composite sleeve; 33. Outer sleeve; 34. Guide shaft; 35. Second positioning ring; 4. Piston ring; 5. Cylinder head; 6. Multi-stage guide sleeve; 61. Main ring sleeve; 62. Secondary ring sleeve; 63. Honeycomb holes. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] like Figures 1-6 As shown, this utility model provides a hydraulic shaft, including a cylinder body 1, a first flange ring 11 fixedly connected to the outer wall of the cylinder body 1, a cylinder head 5 fixedly connected to the end of the cylinder body 1, and a piston rod 2 inserted inside the cylinder head 5. A second flange ring 21 is fixedly connected to the outer wall of the piston rod 2, and a piston ring 4 is fixedly connected to one end of the piston rod 2 located inside the cylinder body 1; a support assembly 3, which is connected between the first flange ring 11 and the second flange ring 21, and is used to improve the support strength of the hydraulic shaft and to protect the piston rod 2; and a multi-stage guide sleeve 6, which is fixedly connected to the inner wall of the cylinder head 5, and the multi-stage... The guide sleeve 6 includes a main ring sleeve 61, and a secondary ring sleeve 62 is fixedly connected to the inner wall of the main ring sleeve 61. The secondary ring sleeve 62 is evenly provided with honeycomb holes 63, and the piston rod 2 passes through the interior of the secondary ring sleeve 62. With the auxiliary support of the support component 3, the overall load effect of the hydraulic cylinder can be improved, and its load stability can be improved. This prevents the piston rod 2 from deforming under individual load, thus improving the safety of the hydraulic cylinder. At the same time, the support component 3 can cover and protect the piston rod 2, preventing dust from adhering to the outer surface of the piston rod 2 and preventing sand, water and contaminants from entering the sealed cylinder body 1, thereby extending the service life of the equipment and improving its performance.

[0031] Furthermore, the first flange ring 11 and the second flange ring 21 have the same outer diameter. Threaded holes are evenly distributed around the circumference of the first flange ring 11 and the second flange ring 21. A hydraulic sleeve also passes through the interior of the first flange ring 11. The support assembly 3 includes a first positioning ring 31. A composite sleeve 32 is fixedly connected to the bottom of the first positioning ring 31. An outer sleeve 33 is fitted onto the outer wall of the composite sleeve 32. A second positioning ring 35 is fixedly connected to the bottom of the outer sleeve 33. A guide shaft 34 is provided inside the outer sleeve 33 and is fixedly connected to the upper surface of the second positioning ring 35. Through the arrangement of the first flange ring 11 and the second flange ring 21, the second positioning ring 35 and the first positioning ring 31 are respectively positioned. Furthermore, through the sliding guidance of the composite sleeve 32 and the outer sleeve 33, the hydraulic shaft is reinforced, improving its support safety.

[0032] Furthermore, the inner diameters of the first positioning ring 31 and the second positioning ring 35 are equal to the outer diameter of the first flange ring 11. Positioning holes are provided on the circumferences of the first positioning ring 31 and the second positioning ring 35 corresponding to the threaded holes of the first flange ring 11. Bolts are passed through the positioning holes and connected to the threaded holes. The composite sleeve 32 is composed of a circumferential array of hexagonal sleeves, and a guide shaft 34 is inserted into the interior of each hexagonal sleeve. The composite sleeve 32 is formed by the circumferential array of hexagonal sleeves, and adjacent hexagonal sleeves are sealed together, forming an irregular ring structure. This achieves sealing protection for the piston rod 2, while also improving its load support effect by cooperating with the sliding limit of the outer sleeve 33 and the guide shaft 34.

[0033] Furthermore, the main ring sleeve 61 is made of tungsten carbide, and the honeycomb holes 63 are axially flared and inclined at 45°. The opening of the honeycomb holes 63 can guide the oil to form a laminar flow lubrication film, which can improve the lubrication effect on the piston rod 2. At the same time, the honeycomb holes 63 can also disperse the stress concentration area and reduce its deformation probability. The inner wall of the honeycomb holes 63 is sprayed with a mixture of aluminum oxide and titanium dioxide. Through the spraying of this mixture, low friction lubrication of the piston rod 2 is achieved. By reducing friction, the service life of the piston rod 2 is improved.

[0034] Working principle: The support assembly 3 is sleeved on the outside of the cylinder body 1 and piston rod 2. At the same time, the first positioning ring 31 and the second flange ring 21, as well as the second positioning ring 35 and the first flange ring 11 are installed and fixed by bolts. At this time, the auxiliary sliding guide of the composite sleeve 32 and the outer sleeve 33 realizes the auxiliary guidance of the cylinder body 1 and piston rod 2, which improves the service life of the piston rod 2 and enhances its safety.

[0035] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A hydraulic shaft, characterized in that: Includes a cylinder body (1), the outer wall of the cylinder body (1) is fixedly connected to a first flange ring (11), the end of the cylinder body (1) is fixedly connected to a cylinder head (5), and a piston rod (2) is inserted into the inside of the cylinder head (5). The outer wall of the piston rod (2) is fixedly connected to a second flange ring (21), and the end of the piston rod (2) located inside the cylinder body (1) is fixedly connected to a piston ring (4). Support assembly (3), which is connected between the first flange ring (11) and the second flange ring (21), and is used to enhance the support strength of the hydraulic shaft and to provide cover protection for the piston rod (2); A multi-stage guide sleeve (6) is fixedly connected to the inner wall of the cylinder head (5), and the multi-stage guide sleeve (6) includes a main ring sleeve (61), and a secondary ring sleeve (62) is fixedly connected to the inner wall of the main ring sleeve (61). The secondary ring sleeve (62) is evenly provided with honeycomb holes (63), and a piston rod (2) passes through the interior of the secondary ring sleeve (62).

2. A hydraulic shaft according to claim 1, characterized in that: The first flange ring (11) and the second flange ring (21) have the same outer diameter. The first flange ring (11) and the second flange ring (21) are evenly provided with threaded holes around their circumferences. The first flange ring (11) also has a hydraulic sleeve running through its interior.

3. A hydraulic shaft according to claim 2, characterized in that: The support assembly (3) includes a first positioning ring (31), a composite sleeve (32) is fixedly connected to the bottom of the first positioning ring (31), an outer sleeve (33) is fitted on the outer wall of the composite sleeve (32), a second positioning ring (35) is fixedly connected to the bottom of the outer sleeve (33), a guide shaft (34) is provided inside the outer sleeve (33), and the guide shaft (34) is fixedly connected to the upper surface of the second positioning ring (35).

4. A hydraulic shaft according to claim 3, characterized in that: The inner diameter of the first positioning ring (31) and the second positioning ring (35) is equal to the outer diameter of the first flange ring (11). The first positioning ring (31) and the second positioning ring (35) are provided with positioning holes at the threaded holes of the first flange ring (11) on their circumferences, and bolts are passed through the positioning holes and connected to the threaded holes.

5. A hydraulic shaft according to claim 4, characterized in that: The composite sleeve (32) is composed of a circumferential array of several hexagonal sleeves, and a guide shaft (34) is inserted into the interior of each hexagonal sleeve.

6. A hydraulic shaft according to claim 1, characterized in that: The main ring sleeve (61) is made of tungsten carbide, and the honeycomb holes (63) are designed with an axial flare and an inclination of 45°.

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