A cylinder structure of a hydraulic cylinder

Abstract

The utility model provides a kind of cylinder barrel structure of hydraulic cylinder, it is related to hydraulic cylinder protection technical field, including hydraulic cylinder, still include support assembly and pressure component;Support assembly includes the thimble fixedly connected in the outside of hydraulic cylinder, the end of thimble away from hydraulic cylinder is fixedly connected with resistance pressure block, the end of resistance pressure block away from thimble is fixedly connected with vertical rod;Pressure component includes the connecting rod fixedly connected in the outside of hydraulic cylinder, the outside of connecting rod is fixedly connected with slider, the outside of slider is slidably connected with fixed ring, the end of vertical rod away from resistance pressure block is fixedly connected with outer ring, and the center point of outer ring and hydraulic cylinder is on the same vertical line arrangement;By rigid support chain accurate inhibition drum-shaped deformation in cylinder barrel middle part, and with light weight spring buffer system absorption high frequency vibration, realized cylinder barrel full length keep high center point on the same vertical line degree, low vibration, low wear and tear Smooth operation, effectively solved the problem that long-stroke cylinder barrel middle part is easy to swell, overall sleeve is heavy, sealing is easy to leak oil.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder protection technology, and in particular to a cylinder barrel structure for a hydraulic cylinder. Background Technology

[0002] Hydraulic cylinders, as the core actuators in hydraulic systems, are widely used in engineering machinery, metallurgical equipment, machine tool manufacturing, shipbuilding and other fields. The cylinder barrel, as the core load-bearing component of the hydraulic cylinder, must withstand the radial pressure and axial thrust of high-pressure hydraulic oil, while ensuring precise matching with the piston and seals to avoid hydraulic oil leakage and ensure motion accuracy.

[0003] Existing long-stroke hydraulic cylinders mostly adopt an integral hollow cylindrical structure, which is only connected and fixed to the equipment frame through flanges or trunnions at both ends. When the cylinder is subjected to high-pressure hydraulic oil, the outer wall in the middle of the cylinder is prone to bulging deformation due to excessive radial pressure. This not only leads to an increase in the clearance between the piston and the inner wall of the cylinder, causing hydraulic oil leakage, but also accelerates the wear of the seals and shortens the service life of the hydraulic cylinder.

[0004] Existing support solutions are mostly large-area wrapping supports, such as using an integral metal sleeve to wrap the outer wall of the cylinder. Although this can provide some support, it will significantly increase the overall weight and volume of the hydraulic cylinder and cannot provide precise support for the easily deformable area in the middle of the cylinder, making it less applicable.

[0005] Therefore, this utility model provides a cylinder structure for a hydraulic cylinder. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies and provide a cylinder structure for a hydraulic cylinder.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a cylinder structure for a hydraulic cylinder, including a hydraulic cylinder, a support assembly, and a pressure assembly; the support assembly includes a collar fixedly connected to the outside of the hydraulic cylinder, a pressing block fixedly connected to the end of the collar away from the hydraulic cylinder, and a vertical rod fixedly connected to the end of the pressing block away from the collar.

[0008] The pressure assembly includes a connecting rod fixedly connected to the outside of the hydraulic cylinder, a slider fixedly connected to the outside of the connecting rod, and a retaining ring slidably connected to the outside of the slider.

[0009] In a preferred embodiment, the end of the vertical rod away from the pressure block is fixedly connected to an outer ring, and the outer ring is arranged on the same vertical line as the center point of the hydraulic cylinder.

[0010] In a preferred embodiment, the fixed ring has a groove inside that is adapted to the slider, and a spring is arranged in the groove along its length.

[0011] In a preferred embodiment, the slider is slidably connected within the groove along its length, and the slider is in contact with the inner wall of the groove.

[0012] In a preferred embodiment, the outer side of the fixing ring is fixedly connected to the inner side of the outer ring by welding or bolts, and the center point of the fixing ring and the center point of the outer ring are on the same vertical line.

[0013] In a preferred embodiment, one end of the spring is fixedly connected to the inner wall of the fixed ring located at one end of the slide groove, and the other end of the spring is fixedly connected to the slider; when the spring is in its natural state, the slider is located in the middle of the slide groove.

[0014] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0015] When hydraulic oil enters the hydraulic cylinder and pushes the piston, the cylinder barrel generates radial expansion and axial vibration. The sleeve, the pressure block, and the vertical rod synchronously transmit the energy to the outer ring, so that the outer ring moves along the same vertical line as the center point of the cylinder barrel. At the same time, the connecting rod drives the slider to slide back and forth in the groove of the fixed ring. The spring converts the impact kinetic energy into elastic potential energy and releases it immediately. The rigid support chain accurately suppresses the bulging deformation in the middle of the cylinder barrel, and the lightweight spring buffer system absorbs high-frequency vibration. This invention achieves stable operation with low vibration and low wear, keeping the center point of the cylinder barrel on the same vertical line throughout its entire length. It effectively solves the problems of easy bulging in the middle of long-stroke cylinder barrels, heavy overall sleeves, and easy oil leakage from the seal. Attached Figure Description

[0016] Figure 1 A perspective view of the cylinder structure of a hydraulic cylinder provided by this utility model;

[0017] Figure 2 A schematic diagram of the ring structure of a hydraulic cylinder barrel structure provided by this utility model;

[0018] Figure 3 A schematic diagram of the support component structure for the cylinder barrel structure of a hydraulic cylinder provided by this utility model;

[0019] Figure 4 This utility model provides a schematic diagram of the pressure component structure of a hydraulic cylinder barrel structure.

[0020] Legend:

[0021] 1. Hydraulic cylinder;

[0022] 2. Support component; 21. Ring; 22. Pressing block; 23. Vertical rod; 24. Outer ring;

[0023] 3. Pressure assembly; 31. Fixing ring; 32. Slide groove; 33. Spring; 34. Slider; 35. Connecting rod. Detailed Implementation

[0024] 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.

[0025] like Figure 1 - Figure 3 As shown, this embodiment provides a technical solution: a cylinder structure of a hydraulic cylinder, including a hydraulic cylinder 1, a support component 2 and a pressure component 3. The support component 2 includes a collar 21 fixedly connected to the outside of the hydraulic cylinder 1. A pressing block 22 is fixedly connected to the end of the collar 21 away from the hydraulic cylinder 1. A vertical rod 23 is fixedly connected to the end of the pressing block 22 away from the collar 21. An outer ring 24 is fixedly connected to the end of the vertical rod 23 away from the pressing block 22. The outer ring 24 and the center point of the hydraulic cylinder 1 are arranged on the same vertical line.

[0026] Hydraulic cylinder 1 is a type of linear reciprocating drive device in the prior art. A collar 21 is fixedly connected to the outside of hydraulic cylinder 1, achieving a rigid connection between the support assembly 2 and hydraulic cylinder 1. Furthermore, the annular structure evenly distributes the supporting force, preventing localized stress concentration on hydraulic cylinder 1. A pressure block connects collar 21 and vertical rod 23, increasing the contact area between them to evenly distribute the radial supporting force transmitted by vertical rod 23 onto collar 21, preventing stress concentration at the connection point and the occurrence of cracks or deformation. Vertical rod 23 serves as the support assembly... The force-bearing connecting rod of component 2 is connected to the pressure block at one end and the outer ring 24 at the other end, so as to fix the radial distance between the hydraulic cylinder 1 and the outer ring 24, and at the same time provide stable support for the outer ring 24, ensuring that the center point of the outer ring 24 and the hydraulic cylinder 1 is always on the same vertical line. The outer ring 24 serves as the mounting carrier of the pressure component 3 on the one hand, and forms the outer protective structure of the cylinder barrel on the other hand, which can resist external impact or collision with foreign objects, protect the internal hydraulic cylinder 1 and pressure component 3, and at the same time enhance the overall radial stiffness of the cylinder barrel through the ring structure, preventing the hydraulic cylinder 1 from radially deforming due to hydraulic pressure fluctuations.

[0027] like Figure 2 - Figure 4As shown, the pressure assembly 3 includes a connecting rod 35 fixedly connected to the outside of the hydraulic cylinder 1. A slider 34 is fixedly connected to the outside of the connecting rod 35. A fixing ring 31 is slidably connected to the outside of the slider 34. The inside of the fixing ring 31 is provided with a groove 32 adapted to the slider 34. A spring 33 is arranged in the groove 32 along its length. The slider 34 is slidably connected in the groove 32 along its length, and the slider 34 is in contact with the inner wall of the groove 32. The outside of the fixing ring 31 is fixedly connected to the inside of the outer ring 24 by welding or bolts, and the center points of the fixing ring 31 and the outer ring 24 are on the same vertical line. One end of the spring 33 is fixedly connected to the inner wall of the fixing ring 31 at one end of the groove 32, and the other end of the spring 33 is fixedly connected to the slider 34. When the spring 33 is in its natural state, the slider 34 is located in the middle position of the groove 32.

[0028] The connecting rod 35 connects the hydraulic cylinder 1 and the slider 34, realizing the force transmission path for the movement and force received by the hydraulic cylinder 1 and the transmission of force by the slider 34. It also positions the initial position of the slider 34, ensuring accurate relative positioning between the slider 34 and the hydraulic cylinder 1 and preventing movement jamming caused by slider 34 offset. The slider 34 is adapted to and slides against the inner wall of the slide groove 32. Its core function is adaptive adjustment and force transmission. When the hydraulic cylinder 1 experiences slight displacement or vibration due to hydraulic pressure fluctuations, the slider 34 can slide along the slide groove 32, absorbing the impact with the spring 33. Simultaneously, the fit design with the slide groove 32 prevents radial wobbling during sliding, ensuring motion stability. The fixing ring 31 serves as the anchor for the pressure component 3. The frame has an inner groove 32 to accommodate the slider 34 and spring 33, and the outer ring 24 is connected by welding and bolts on the outside to integrate the pressure component 3 and the support component 2. At the same time, the ring structure ensures that the circumferential distribution of the groove 32 is uniform, ensuring that the multiple sliders 34 are balanced by force. The groove 32 provides a directional sliding track for the slider 34. The adaptation design with the slider 34 restricts the movement direction of the slider 34 and prevents the slider 34 from deviating. At the same time, the length design of the groove 32 can limit the maximum sliding stroke of the slider 34, preventing the spring 33 from being overstretched or compressed and thus failing. The spring 33 absorbs the impact force by stretching and contracting, reducing the damage of vibration to components such as the hydraulic cylinder 1 and the outer ring 24.

[0029] Working principle:

[0030] like Figure 1 - Figure 4 As shown:

[0031] In use: First, hydraulic oil enters hydraulic cylinder 1, pushing the piston to move, which in turn causes hydraulic cylinder 1 to produce slight radial expansion and contraction and axial vibration. The slight displacement of hydraulic cylinder 1 is synchronously transmitted through rigid ring 21, which can drive the pressure block 22 and vertical rod 23 to produce displacement in the same direction. The displacement of vertical rod 23 causes the outer ring 24 to move as a whole, thereby causing the fixed ring 31 to slide relative to the slider 34, realizing the guiding function that the outer ring 24 is always on the same vertical line as the center point of hydraulic cylinder 1. At the same time, the vibration of hydraulic cylinder 1 is transmitted through connecting rod 35, which then drives slider 34 to slide along the groove 32 of fixed ring 31. The sliding compression or tension of spring 33 of slider 34 can drive spring 33 to convert impact kinetic energy into elastic potential energy. The elastic restoring force of spring 33 pushes slider 34 back, thereby driving slider 34 to slide in the opposite direction to the middle of groove 32 to reset, realizing the real-time buffering and reset effect of vibration of hydraulic cylinder 1.

[0032] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cylinder barrel structure for a hydraulic cylinder, comprising a hydraulic cylinder (1), characterized in that, It also includes a support assembly (2) and a pressure assembly (3); the support assembly (2) includes a collar (21) fixedly connected to the outside of the hydraulic cylinder (1), a pressing block (22) fixedly connected to the end of the collar (21) away from the hydraulic cylinder (1), and a vertical rod (23) fixedly connected to the end of the pressing block (22) away from the collar (21); The pressure assembly (3) includes a connecting rod (35) fixedly connected to the outside of the hydraulic cylinder (1), a slider (34) fixedly connected to the outside of the connecting rod (35), and a retaining ring (31) slidably connected to the outside of the slider (34).

2. The cylinder barrel structure of a hydraulic cylinder according to claim 1, characterized in that: The end of the vertical rod (23) away from the pressure block (22) is fixedly connected to an outer ring (24), and the outer ring (24) and the center point of the hydraulic cylinder (1) are set on the same vertical line.

3. The cylinder barrel structure of a hydraulic cylinder according to claim 1, characterized in that: The fixed ring (31) has a groove (32) inside that is adapted to the slider (34), and a spring (33) is provided in the groove (32) along its length.

4. The cylinder barrel structure of a hydraulic cylinder according to claim 1, characterized in that: The slider (34) is slidably connected in the groove (32) along the length direction of the groove (32), and the slider (34) is in contact with the inner wall of the groove (32).

5. The cylinder barrel structure of a hydraulic cylinder according to claim 1, characterized in that: The outer side of the fixing ring (31) is fixedly connected to the inner side of the outer ring (24), and the center points of the fixing ring (31) and the outer ring (24) are on the same vertical line.

6. The cylinder barrel structure of a hydraulic cylinder according to claim 3, characterized in that: One end of the spring (33) is fixedly connected to the inner wall of the fixed ring (31) located at one end of the slide groove (32), and the other end of the spring (33) is fixedly connected to the slider (34).

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