CN219317305U

CN219317305U - Hydraulic steering cylinder convenient for pressure adjustment

Info

Publication number: CN219317305U
Application number: CN202222274205.1U
Authority: CN
Inventors: 董作林
Original assignee: Qingdao Tiansheng Precision Equipment Co ltd
Current assignee: Qingdao Tiansheng Precision Equipment Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2023-07-07
Anticipated expiration: 2032-08-29

Abstract

The utility model discloses a hydraulic steering cylinder convenient for pressure adjustment, which relates to the technical field of hydraulic cylinders and comprises a cylinder barrel, wherein a piston rod is movably connected in the cylinder barrel, the rear end of the piston rod is fixedly connected with a sleeve rod, the diameter of the piston rod is larger than that of the sleeve rod, the rear end of the sleeve rod is movably connected with a nut through screw threads in a rotating manner, the outer wall of the sleeve rod is sleeved with a piston, the piston is positioned on the opposite side of the piston rod and the nut, the bottom end of the cylinder barrel is fixedly connected with a cylinder bottom, and the front end of the cylinder barrel is fixedly connected with a cylinder head. According to the utility model, the pressure regulating rod is rotated through the pressure regulating mechanism, so that the distance between the pressure regulating rod and the piston is regulated, when the distance between the pressure regulating rod and the piston is reduced, the pressure of oil liquid on the piston is increased, so that the stress of a piston rod is larger, in addition, the sealing ring is positioned between the inner wall of the cylinder bottom and the outer wall of the pressure regulating rod, and the oil liquid is prevented from leaking out from the space between the pressure regulating rod and the inner wall of the cylinder bottom, so that the tightness of the cylinder bottom is enhanced.

Description

Hydraulic steering cylinder convenient for pressure adjustment

Technical Field

The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic steering cylinder convenient for pressure adjustment.

Background

The automobile steering system has the functions of controlling the running direction of an automobile according to the intention of a driver, and is commonly divided into three types, such as a mechanical steering system, a hydraulic steering system and an electric steering system, wherein the existing hydraulic steering system steers by driving wheels through a hydraulic steering cylinder, and the hydraulic cylinder is a hydraulic executive element which converts hydraulic energy into mechanical energy and performs linear reciprocating motion.

However, the existing steering hydraulic cylinder is usually manufactured by one-step forming, the liquid pressure variation of the manufactured hydraulic rod is constant, the pressure born by the piston cannot be readjusted, and therefore a single hydraulic cylinder can only be suitable for specific scenes, but cannot be suitable for multiple scenes, and therefore, the hydraulic steering cylinder convenient for adjusting the pressure is needed to solve the existing defects.

Disclosure of Invention

Technical problem to be solved

The utility model aims to overcome the defects of the prior art and provides a hydraulic steering cylinder convenient for pressure adjustment.

Technical proposal

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a hydraulic steering cylinder convenient to adjust pressure, includes the cylinder, the inside swing joint of cylinder has the piston rod, the rear end fixedly connected with loop bar of piston rod, and the diameter of piston rod is greater than the diameter of loop bar, the rear end of loop bar passes through screw thread rotation swing joint has the nut, the outer wall cover of loop bar is equipped with the piston, and the piston is located the opposite side of piston rod and nut, the bottom fixedly connected with cylinder bottom of cylinder, and the front end fixedly connected with cylinder head of cylinder, the inside swing joint of cylinder bottom has pressure regulating mechanism, and the rear end of cylinder bottom has the end cover through screw swing joint, the rear end of end cover is provided with rotary mechanism.

Above-mentioned, pressure regulating mechanism includes pressure regulating post, pressure regulating pole and sealing washer, the rear end of pressure regulating post has the pressure regulating pole through screw thread swivelling joint, and the rear end of pressure regulating pole passes the end cover and extends to the outside of cylinder, the outer wall of pressure regulating post is located to the bottom of sealing washer, and the inner wall at the cylinder bottom is hugged closely on the top of sealing washer.

Above-mentioned, the front end of pressure regulating post has seted up the several spacing groove, the inside fixedly connected with of cylinder bottom has the several stopper, the bottom of stopper all blocks in the inside of spacing groove.

The rotating mechanism comprises a clamping block I, a clamping block II, a connecting rod I and a connecting rod II, wherein one end of the clamping block I is hinged to the opposite side of the clamping block II, the other end of the clamping block I is movably connected to the opposite side of the clamping block II through a connecting shaft, one end of the connecting rod I is sleeved on the outer wall of the connecting shaft, and the other end of the connecting rod I is hinged to the connecting rod II.

Above-mentioned, the outer wall fixedly connected with of cylinder bottom is a set of fixed block of upper and lower distribution, the opposite side of fixed block has fastening screw through screw rotation swing joint, the one end of connecting rod two is located the opposite side of fixed block, and the perforation has been seted up to the one end of connecting rod two, the diameter of fastening screw is less than the fenestrate diameter.

Above-mentioned, the outer wall fixedly connected with of pressure regulating pole is a set of fixture block that is symmetrical distribution, the draw-in groove has all been seted up to the opposite side of clamp splice one and clamp splice two, the one end block of fixture block is in the inside of draw-in groove.

The beneficial effects are that:

compared with the prior art, the hydraulic steering cylinder convenient for adjusting pressure has the following beneficial effects:

1. according to the utility model, the pressure regulating rod is rotated through the pressure regulating mechanism, so that the distance between the pressure regulating rod and the piston is regulated, when the distance between the pressure regulating rod and the piston is reduced, the pressure of oil liquid on the piston is increased, so that the stress of a piston rod is larger, in addition, the sealing ring is positioned between the inner wall of the cylinder bottom and the outer wall of the pressure regulating rod, and the oil liquid is prevented from leaking out from the space between the pressure regulating rod and the inner wall of the cylinder bottom, so that the tightness of the cylinder bottom is enhanced.

2. According to the utility model, the connecting rod II rotates around the adjusting rod through the rotating mechanism, the connecting rod I is driven to rotate, and one end of the clamping block is clamped in the clamping groove, so that the pressure adjusting rod, the clamping block I and the clamping block II are driven to synchronously rotate, the pressure adjusting column moves in the cylinder bottom, the distance between the adjusting piston and the pressure adjusting column is realized, the rotating moment is increased through the cooperation of the connecting rod I and the connecting rod II, and the user can conveniently rotate the adjusting rod.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of a partial cross-sectional structure of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of FIG. 2A according to the present utility model;

FIG. 4 is a schematic diagram of a pressure regulating mechanism according to the present utility model;

fig. 5 is a schematic structural view of a rotating mechanism according to the present utility model.

In the figure: 1. a cylinder; 2. a piston rod; 3. a loop bar; 4. a screw cap; 5. a piston; 6. a cylinder bottom; 7. a cylinder head; 8. a pressure regulating mechanism; 801. a pressure regulating column; 802. a pressure regulating rod; 803. a seal ring; 9. a rotation mechanism; 901. clamping block I; 902. clamping blocks II; 903. a first connecting rod; 904. a second connecting rod; 10. an end cap; 11. a limit groove; 12. a limiting block; 13. a fixed block; 14. fastening a screw; 15. perforating; 16. a clamping block; 17. a clamping groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-5, the present utility model provides a technical solution: the utility model provides a hydraulic steering cylinder convenient to adjust pressure, including cylinder 1, the inside swing joint of cylinder 1 has piston rod 2, the rear end fixedly connected with loop bar 3 of piston rod 2, and the diameter of piston rod 2 is greater than the diameter of loop bar 3, the rear end of loop bar 3 is through screw thread rotation swing joint has nut 4, the outer wall cover of loop bar 3 is equipped with piston 5, and piston 5 is located the opposite side of piston rod 2 and nut 4, the bottom fixedly connected with cylinder bottom 6 of cylinder 1, and the front end fixedly connected with cylinder head 7 of cylinder 1, the inside swing joint of cylinder bottom 6 has pressure regulating mechanism 8, and the rear end of cylinder bottom 6 is through screw swing joint has end cover 10, the rear end of end cover 10 is provided with rotary mechanism 9.

The outer wall of the cylinder barrel 1 is provided with a group of oil inlets and oil outlets which are distributed left and right, so that oil enters from the oil inlets, and then the piston 5 is pressed against the oil inlets, so that the piston rod 2 moves in the cylinder barrel 1, and the distance between the pressure regulating mechanism 8 and the piston 5 is changed by utilizing the rotating mechanism 9, so that the pressure of the oil to the piston 5 is regulated.

As shown in fig. 1, fig. 3 and fig. 4, the pressure regulating mechanism 8 includes a pressure regulating column 801, a pressure regulating rod 802 and a sealing ring 803, the rear end of the pressure regulating column 801 is movably connected with the pressure regulating rod 802 through screw thread rotation, and the rear end of the pressure regulating rod 802 passes through the end cover 10 and extends to the outer side of the cylinder barrel 1, the bottom end of the sealing ring 803 is arranged on the outer wall of the pressure regulating column 801, the top end of the sealing ring 803 is tightly attached to the inner wall of the cylinder bottom 6, a plurality of limit grooves 11 are formed in the front end of the pressure regulating column 801, a plurality of limit blocks 12 are fixedly connected in the cylinder bottom 6, and the bottom ends of the limit blocks 12 are clamped in the limit grooves 11.

Through rotary mechanism 9, make pressure regulating pole 802 rotate to adjust the distance between pressure regulating post 801 and the piston 5, when the distance between pressure regulating post 801 and the piston 5 reduces, the pressure of fluid to the piston 5 increases, thereby makes piston rod 2 atress bigger, in addition, sealing washer 803 is located between cylinder bottom 6 inner wall and the pressure regulating post 801 outer wall, prevents that fluid from leaking out between pressure regulating post 801 and the cylinder bottom 6 inner wall.

As shown in fig. 1, fig. 2 and fig. 5, the rotation mechanism 9 includes a first clamping block 901, a second clamping block 902, a first connecting rod 903 and a second connecting rod 904, one end of the first clamping block 901 is hinged to the opposite side of the second clamping block 902, the other end of the first clamping block 901 is movably connected to the opposite side of the second clamping block 902 through a connecting shaft, one end of the first connecting rod 903 is sleeved on the outer wall of the connecting shaft, the other end of the first connecting rod 903 is hinged to the second connecting rod 904, a group of fixing blocks 13 distributed up and down are fixedly connected to the outer wall of the cylinder bottom 6, the opposite side of the fixing blocks 13 is movably connected with a fastening screw 14 through threads in a rotating manner, one end of the second connecting rod 904 is located at the opposite side of the fixing blocks 13, a through hole 15 is formed in one end of the second connecting rod 904, the diameter of the fastening screw 14 is smaller than the diameter of the through hole 15, the outer wall of the pressure regulating rod 802 is fixedly connected with a group of clamping blocks 16 which are symmetrically distributed, clamping grooves 17 are formed in opposite sides of the first clamping block 901 and the second clamping block 902, and one end of the clamping blocks 16 is clamped in the inner part of the clamping grooves 17.

When the second connecting rod 904 is not used, one end of the second connecting rod 904 is limited to the opposite side of the fixed block 13 through the fastening screw 14, and when the second connecting rod 904 is needed to be used, the second connecting rod 904 is rotated around the adjusting rod to drive the first connecting rod 903 to rotate, and as one end of the clamping block 16 is clamped in the clamping groove 17, the pressure adjusting rod 802, the first clamping block 901 and the second clamping block 902 are driven to synchronously rotate, so that the pressure adjusting column 801 moves in the cylinder bottom 6, and the distance between the adjusting piston 5 and the pressure adjusting column 801 is realized.

Working principle: when the cylinder bottom adjusting device is used, one end of the connecting rod II 904 is loosened from the opposite side of the fixed block 13 through the screw, the connecting rod II 904 is rotated to a position vertical to the outer wall of the cylinder bottom 6, then the connecting rod II 904 is rotated to enable the connecting rod I903 to rotate, and as the clamping blocks 16 on the opposite sides of the clamping blocks I901 and II 902 are clamped in the clamping grooves 17, the connecting rod I903 is rotated to drive the adjusting rod to rotate, so that the adjusting column is pushed to move in the cylinder bottom 6 towards the cylinder head 7, the distance between the piston 5 and the adjusting column is adjusted, the pressure of oil to the piston 5 is enhanced, and when the adjusting column continues to move forwards, the limiting block 12 in the cylinder bottom 6 is clamped in the limiting groove 11, so that the adjusting column cannot continue to move forwards.

It should be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless explicitly specified and limited otherwise, the terms "fixedly attached," "mounted," "connected," and "coupled" are to be construed broadly, e.g., as a fixed connection, as a removable connection, or as an integral connection; "coupled" may be either mechanical or electrical; the "connection" may be direct, indirect via an intermediary, or communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a hydraulic steering cylinder convenient to adjust pressure, includes cylinder (1), its characterized in that: the inside swing joint of cylinder (1) has piston rod (2), the rear end fixedly connected with loop bar (3) of piston rod (2), and the diameter of piston rod (2) is greater than the diameter of loop bar (3), the rear end of loop bar (3) is through screw thread swivelling joint has nut (4), the outer wall cover of loop bar (3) is equipped with piston (5), and piston (5) are located the opposite side of piston rod (2) and nut (4), the bottom fixedly connected with cylinder end (6) of cylinder (1), and the front end fixedly connected with cylinder head (7) of cylinder (1), the inside swing joint of cylinder end (6) has pressure regulating mechanism (8), and the rear end of cylinder end (6) is through screw swing joint has end cover (10), the rear end of end cover (10) is provided with rotary mechanism (9).

2. A hydraulic steering cylinder for facilitating pressure regulation according to claim 1, wherein: the pressure regulating mechanism (8) comprises a pressure regulating column (801), a pressure regulating rod (802) and a sealing ring (803), wherein the pressure regulating rod (802) is movably connected to the rear end of the pressure regulating column (801) through threads in a rotating mode, the rear end of the pressure regulating rod (802) penetrates through the end cover (10) and extends to the outer side of the cylinder barrel (1), the bottom end of the sealing ring (803) is arranged on the outer wall of the pressure regulating column (801), and the top end of the sealing ring (803) is tightly attached to the inner wall of the cylinder bottom (6).

3. A hydraulic steering cylinder for facilitating pressure regulation according to claim 2, wherein: the front end of the pressure regulating column (801) is provided with a plurality of limiting grooves (11), a plurality of limiting blocks (12) are fixedly connected to the inside of the cylinder bottom (6), and the bottom ends of the limiting blocks (12) are clamped in the limiting grooves (11).

4. A hydraulic steering cylinder for facilitating pressure regulation according to claim 3, wherein: the rotating mechanism (9) comprises a clamping block I (901), a clamping block II (902), a connecting rod I (903) and a connecting rod II (904), one end of the clamping block I (901) is hinged to the opposite side of the clamping block II (902), the other end of the clamping block I (901) is movably connected to the opposite side of the clamping block II (902) through a connecting shaft, one end of the connecting rod I (903) is sleeved on the outer wall of the connecting shaft, and the other end of the connecting rod I (903) is hinged to the connecting rod II (904).

5. A hydraulic steering cylinder for facilitating pressure regulation according to claim 4, wherein: the outer wall fixedly connected with of cylinder bottom (6) is fixed block (13) of a set of upper and lower distribution, the opposite side of fixed block (13) is through screw rotation swing joint has fastening screw (14), the one end of connecting rod two (904) is located the opposite side of fixed block (13), and perforation (15) have been seted up to the one end of connecting rod two (904), the diameter of fastening screw (14) is less than the diameter of perforation (15).

6. A hydraulic steering cylinder for facilitating pressure regulation according to claim 5, wherein: the outer wall fixedly connected with of pressure regulating pole (802) is a set of fixture block (16) that are symmetrical distribution, draw-in groove (17) have all been seted up to the opposite side of clamp block one (901) and clamp block two (902), the inside in draw-in groove (17) of one end block of fixture block (16).