CN216199485U

CN216199485U - Horizontal support oil cylinder

Info

Publication number: CN216199485U
Application number: CN202122608641.3U
Authority: CN
Inventors: 张邦柱; 刘家林
Original assignee: Luzhou Synthetic Hydraulic Parts Co ltd
Current assignee: Luzhou Synthetic Hydraulic Parts Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-04-05
Anticipated expiration: 2031-10-28

Abstract

The utility model discloses a horizontal support oil cylinder, which relates to the technical field of operating machinery and comprises a cylinder body, wherein a rod cavity and a rodless cavity are arranged in the cylinder body, a base is arranged at one end of the cylinder body, an installation seat is arranged at the other end of the cylinder body, an oil inlet pipeline and an oil outlet pipeline are connected between the base and the installation seat, a plurality of first oil inlet channels communicated with the oil inlet pipeline and the rodless cavity are arranged on the base, a plurality of first oil outlet channels communicated with the oil outlet pipeline are also arranged on the base, and a second oil inlet channel communicated with the oil inlet pipeline and a second oil outlet channel communicated with the oil outlet pipeline are also arranged on the installation seat; and the cylinder body is also provided with an oil outlet joint communicated with the rod cavity and the oil outlet pipeline. The hydraulic oil cylinder integrates a plurality of oil inlet channels and a plurality of oil outlet channels, simplifies the structure that a plurality of control valve groups are required to be installed outside the oil cylinder, reduces the overall occupied space of the hydraulic oil cylinder, and is convenient to install.

Description

Horizontal support oil cylinder

Technical Field

The utility model relates to the technical field of operation machinery, in particular to a horizontal support oil cylinder.

Background

The automobile crane is a crane installed on a common automobile chassis or a special automobile chassis, is generally provided with two control rooms for getting on and off, the outriggers need to be extended to keep stable during operation, the lifting capacity range is large and can be 8-1600 tons, the number of axles of the chassis can be 2-10, and the crane is the crane type with the largest yield and the most extensive use.

The hydraulic oil cylinder is a key element of the crane and has the function of driving a load or an actuating mechanism to act by the telescopic motion of a piston rod in a cylinder barrel. The traditional hydraulic oil cylinder needs to realize oil circuit control, such as oil circuit locking, flow regulation and other functions, so as to control the flow rate of hydraulic oil. The hydraulic lock, the balance valve and other valve elements are arranged outside the hydraulic oil cylinder and connected through a plurality of external pipelines, so that the formed hydraulic oil cylinder structure needs to occupy a large space, the hydraulic oil cylinder with limited space cannot be applied, oil pipe pipelines are more, the association relation among valve bodies is complex, the installation steps are complex, the cost is higher, and the disassembly, assembly and maintenance are more troublesome; and along with the increase of power, the requirement on hydraulic flow is also increased, and the traditional oil cylinder control oil way can only meet the requirement by increasing the number of conventional hydraulic cartridge valves, so that the space volume and the cost are greatly increased, and the practical engineering application is severely limited and influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a horizontal support leg oil cylinder, which is used for overcoming the defects that in the prior art, in order to realize oil circuit control of the oil cylinder, a large number of valve bodies and pipelines need to be arranged on the oil cylinder, the volume is large, the occupied space is two large, and the installation is complex, simplifying the structure that a plurality of control valve groups need to be installed outside the oil cylinder, reducing the occupied space of the whole oil cylinder, and being convenient to install.

In order to realize the purpose of the utility model, the technical scheme is as follows: a horizontal support oil cylinder comprises a cylinder body, wherein a rod cavity and a rodless cavity are arranged in the cylinder body, a base is arranged at one end of the cylinder body, a mounting seat is arranged at the other end of the cylinder body, an oil inlet pipeline and an oil outlet pipeline are connected between the base and the mounting seat, a plurality of first oil inlet channels communicated with the oil inlet pipeline and the rodless cavity are formed in the base, a plurality of first oil outlet channels communicated with the oil outlet pipeline are further formed in the base, and a second oil inlet channel communicated with the oil inlet pipeline and a second oil outlet channel communicated with the oil outlet pipeline are further formed in the mounting seat; and the cylinder body is also provided with an oil outlet joint communicated with the rod cavity and the oil outlet pipeline.

Furthermore, the middle parts of the oil inlet pipeline and the oil outlet pipeline are sunken downwards and fixed on the cylinder body.

Further, the cylinder body includes cylinder, piston rod, piston and uide bushing, and uide bushing and base are located the both ends of cylinder respectively, and the piston is located the cylinder, and piston rod one end is fixed with the piston, and the piston rod runs through the uide bushing and outwards extends.

Furthermore, a spacer bush is further installed on the piston rod and located in front of the piston, and the diameter of the spacer bush is smaller than that of the piston.

Furthermore, a first O-shaped sealing ring is embedded in the inner wall of the piston and the inner wall of the spacer sleeve.

Furthermore, the piston is in threaded connection with the piston rod, the piston rod is further provided with an annular groove, steel balls are installed in the annular groove, the piston is further provided with a threaded hole, and a locking screw for tightly abutting against the steel balls is installed in the threaded hole.

Furthermore, a rectangular sealing ring is embedded on the outer wall of the piston.

Furthermore, the guide sleeve is in threaded connection with the cylinder barrel, and a second O-shaped sealing ring is embedded in the outer wall of the guide sleeve.

Furthermore, an L-shaped sealing ring, a Y-shaped sealing ring and a third O-shaped sealing ring are embedded in the inner wall of the guide sleeve, and the small-diameter end of the L-shaped sealing ring extends towards the outer end of the guide sleeve.

Furthermore, a bearing seat is further installed on the piston rod.

The beneficial effect of the utility model is that,

according to the utility model, the oil inlet pipeline and the oil outlet pipeline are connected between the base and the mounting seat, and the base and the mounting seat are integrated with the plurality of oil inlet channels and the plurality of oil outlet channels, so that the structure that a plurality of control valve groups are required to be mounted outside the oil cylinder is simplified, the overall occupied space of the hydraulic oil cylinder is reduced, the mounting is convenient, and the effects of large space required by the traditional oil cylinder structure, incapability of being suitable for the oil cylinder with limited space, more oil pipe pipelines and complicated mounting steps are solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the utility model and together with the description serve to explain the principles of the utility model.

FIG. 1 is a schematic structural view of a horizontal leg cylinder provided by the present invention;

FIG. 2 is a schematic cross-sectional view of a horizontal leg cylinder provided by the present invention;

FIG. 3 is a schematic cross-sectional view of K1-K1 of FIG. 2;

FIG. 4 is a schematic cross-sectional view of K2-K2 of FIG. 2.

Reference numbers and corresponding part names in the drawings:

1. the oil cylinder comprises a cylinder barrel, 2, a piston, 3, a piston rod, 4, a guide sleeve, 5, a base, 6, a mounting seat, 7, a spacer sleeve, 8, a rodless cavity, 9, a rod cavity, 10, an oil inlet pipeline, 11, an oil outlet pipeline, 12, a first oil inlet channel, 13, a second oil inlet channel, 14, a first oil outlet channel, 15, a second oil outlet channel, 16, an oil outlet joint, 17, a first O-shaped sealing ring, 18, an annular groove, 19, a steel ball, 20, a threaded hole, 21, a locking screw, 22, a rectangular sealing ring, 23, a second O-shaped sealing ring, 24, an L-shaped sealing ring, 25, a Y-shaped sealing ring, 26, a third O-shaped sealing ring, 27 and a bearing seat.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the utility model. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

As shown in fig. 1, 2, 3 and 4, the horizontal support oil cylinder provided by the utility model comprises a cylinder body, wherein a rod cavity 9 and a rodless cavity 8 are arranged in the cylinder body, the rod cavity 9 is a cavity with a piston rod 3, the rodless cavity 8 is a cavity without the piston rod 3, a base 5 is fixedly welded at one end of the cylinder body, the base 5 seals one end of the cylinder body, a mounting seat 6 is installed at the other end of the cylinder body, an oil inlet pipeline 10 and an oil outlet pipeline 11 are connected between the mounting seat 6 and the base 5, and the oil inlet pipeline 10 and the oil outlet pipeline 11 are arranged at intervals. The base 5 is further provided with a plurality of first oil inlet channels 12, the plurality of first oil inlet channels 12 are respectively located on three adjacent surfaces of the base 5, the plurality of first oil inlet channels 12 are simultaneously communicated with the oil inlet pipeline 10 and the rodless cavity 8, the mounting base 6 is further provided with a second oil inlet channel 13 communicated with the oil inlet pipeline 10, and through the matching of the base 5 and the mounting base 6, hydraulic oil can enter or be discharged from the rodless cavity 8 through any one or more of the plurality of first oil inlet channels 12 and the second oil inlet channels 13, so that the control valve group can be respectively installed at any inlet position of the plurality of first oil inlet channels 12 and the second oil inlet channels 13 when being installed; meanwhile, a plurality of first oil outlet channels 14 are further formed in the base 5, the first oil outlet channels 14 are respectively located on three adjacent surfaces of the base 5, the first oil outlet channels 14 are simultaneously communicated with the oil outlet pipeline 11, an oil outlet joint 16 communicated with the rodless cavity 8 and the oil outlet pipeline 11 is further arranged on the cylinder body, a second oil outlet channel 15 communicated with the oil outlet pipeline 11 is formed in the mounting seat 6, hydraulic oil can enter or be discharged from the rod cavity 9 through any one or more of the first oil outlet channels 14 and the second oil outlet channels 15, and the control valve group can be respectively installed at any inlet position of the first oil outlet channels 14 and the second oil outlet channels 15 during installation.

According to the utility model, the oil inlet pipeline 10 and the oil outlet pipeline 11 are connected between the base 5 and the mounting seat 6, and the base 5 and the mounting seat 6 are integrated with a plurality of oil inlet channels and a plurality of oil outlet channels, so that the structure that a plurality of control valve groups are required to be mounted outside the oil cylinder is simplified, the overall occupied space of the hydraulic oil cylinder is reduced, the mounting is convenient, and the effects of large space required by the traditional oil cylinder structure, incapability of being suitable for the oil cylinder with limited space, more oil pipeline and complicated mounting steps are solved.

In some embodiments, the middle portions of the oil inlet pipeline 10 and the oil outlet pipeline 11 are recessed downward, and the recessed portions of the oil inlet pipeline 10 and the oil outlet pipeline 11 are welded and fixed on the cylinder body, so that not only are the oil inlet pipeline 10 and the oil outlet pipeline 11 fixed on the cylinder body, but also the structural strength of the oil inlet pipeline 10 and the oil outlet pipeline 11 is greater, the oil inlet pipeline 10 and the oil outlet pipeline 11 are effectively prevented from being deformed in the using process, the service life of the oil inlet pipeline 10 and the oil outlet pipeline 11 is longer, and the quality of the present invention is ensured.

In some embodiments, the cylinder body comprises a cylinder barrel 1, a piston rod 3, a piston 2 and a guide sleeve 4, a base 5 is welded at one end of the cylinder barrel 1, so that the end of the cylinder barrel 1 is sealed and fixed, and a mounting seat 6 is welded and fixed on the outer wall of the cylinder barrel 1; the guide sleeve 4 is fixedly arranged at the other end of the cylinder barrel 1, the piston 2 is arranged in the cylinder barrel 1, so that the cylinder body is divided into a rod cavity 9 and a rodless cavity 8, the piston 2 is in sliding seal fit with the inner wall of the cylinder barrel 1, and the rod cavity 9 and the rodless cavity 8 are two sealed cavities all the time in the reciprocating motion process of the piston 2 in the cylinder barrel 1; meanwhile, the piston rod 3 is installed in the cylinder barrel 1, the central axis of the piston rod 3 and the central axis of the cylinder barrel 1 are on the same straight line, one end of the piston rod 3 close to the base 5 is fixed with the piston 2, the other end of the piston rod 3 penetrates through the guide sleeve 4 to extend outwards, and the piston 2 reciprocates in the cylinder barrel 1 to drive the piston rod 3 to reciprocate synchronously, so that the piston rod 3 is retracted into the cylinder barrel or the piston rod 3 extends out of the cylinder barrel, and the use of the utility model is ensured.

In some embodiments, the piston rod 3 is further provided with a spacer 7, the spacer 7 of the spacer 7 is sleeved on the piston rod 3, the spacer 7 is located in front of the piston 2, the spacer 7 is abutted to the piston 2, and the diameter of the spacer 7 is smaller than that of the piston 2, so that a certain gap is formed between the outer wall of the spacer 7 and the inner wall of the cylinder 1, and a small annular space is formed between the outer wall of the spacer 7 and the inner wall of the cylinder 1, when the piston 2 pushes the piston rod 3 to extend out of the cylinder 1, the spacer 7 moves synchronously with the piston rod 3, when the spacer 7 is abutted to the guide sleeve 4, the oil outlet connector 16 is communicated with the small annular space, at this time, the rod cavity 9 is the small annular space, so that when the piston 2 needs to be reset, hydraulic oil can push the piston 2 to reset after entering the small annular space, and thereby the piston rod 3 resets. By arranging the spacer 7, the piston 2 and the spacer 7 can be separately processed in the production process, so that the processing difficulty of the piston 2 is greatly reduced; meanwhile, the piston rod 3 is provided with the spacer 7, so that the reciprocating motion of the piston rod 3 is more stable in the process that the piston 2 pushes the piston rod 3 to reciprocate, and the stability of the oil cylinder is greatly improved.

In some embodiments, the inner wall of the piston 2 and the inner wall of the spacer 7 are further embedded with first O-shaped sealing rings 17, so that sealing cooperation is realized between the piston 2 and the piston rod 3 and between the spacer 7 and the piston rod 3, and the sealing performance between the piston 2 and the piston rod 3 and between the spacer 7 and the piston rod 3 is ensured, thereby ensuring better isolation effect of the rod cavity 9 and the rodless cavity 8, ensuring more stable oil cylinder in use and ensuring the quality of the oil cylinder.

In some embodiments, the piston 2 is in threaded connection with the piston rod 3, the piston rod 3 is further provided with an annular groove 18, steel balls 19 are mounted in the annular groove 18, the depth of the annular groove 18 is smaller than the radius of the steel balls 19, a plurality of steel balls 19 can be arranged in the annular groove 18, and the plurality of steel balls 19 can be uniformly arranged at intervals along the circumferential direction of the annular groove 18; meanwhile, the piston 2 is further provided with a threaded hole 20 corresponding to the steel ball 19 in position, the diameter of the threaded hole 20 is matched with the diameter of the steel ball 19, the steel ball 19 can be conveniently assembled in the annular groove 18 through the threaded hole 20 after the piston 2 and the piston rod 3 are fixed, the top of the steel ball 19 is located in the threaded hole 20 after the steel ball 19 is installed, the threaded hole 20 is internally screwed with a locking screw 21, and the lower end of the locking screw 21 is abutted against the steel ball 19, so that the steel ball 19 is abutted against between the annular groove 18 and the piston 2. Through making piston 2 and piston rod 3 cooperate installation steel ball 19 under threaded connection's the condition, not only piston 2 can not produce the relative displacement of axis direction with piston rod 3, and make piston 2 and piston rod 3 can not relative rotation to make the locking effect between piston 2 and the piston rod 3 better.

In some embodiments, the outer wall of the piston 2 is further embedded with a rectangular sealing ring 22, the inner side of the rectangular sealing ring 22 is also embedded with an O-shaped sealing ring, the rectangular sealing rings 22 can also be multiple, the multiple rectangular sealing rings 22 are arranged at intervals along the axial direction of the piston 2, and through the common cooperation of the multiple rectangular sealing rings 22, the sealing effect between the piston 2 and the cylinder barrel 1 is better, and the sealing performance between the rod cavity 9 and the rodless cavity 8 is ensured.

In some embodiments, the guide sleeve 4 is in threaded connection with the cylinder barrel 1, so that the guide sleeve 4 is more convenient to mount and dismount, and the production efficiency of the utility model is higher in the production process; meanwhile, the outer wall of the guide sleeve 4 is embedded with a second O-shaped sealing ring 23, so that the sealing performance between the guide sleeve 4 and the cylinder barrel 1 is better, and the leakage of hydraulic oil in the rod cavity 9 between the guide sleeve 4 and the cylinder barrel 1 is effectively prevented.

In some embodiments, the inner wall of the guide sleeve 4 is further embedded with at least one L-shaped seal ring 24, one Y-shaped seal ring 25 and one third O-shaped seal ring 26, wherein the L-shaped seal ring 24, the Y-shaped seal ring 25 and the third O-shaped seal ring 26 are sequentially arranged from the outer end of the guide sleeve 4 to the inner end of the guide sleeve 4, and the sealing effect between the piston rod 3 and the guide sleeve 4 is greatly improved by the cooperation of the L-shaped seal ring 24, the Y-shaped seal ring 25 and the third O-shaped seal ring 26; the small-diameter end of the L-shaped sealing ring 24 extends towards the outer end of the guide sleeve 4, so that when the piston rod 3 extends outwards, a limit spigot is formed at the step of the L-shaped sealing ring 24, the L-shaped sealing ring 24 is effectively prevented from falling off due to inertia when the piston rod 3 extends outwards, and the L-shaped sealing ring 24 is more stably installed; simultaneously, the opening of Y type sealing washer 25 is towards cylinder 1 middle part, and when making piston rod 3 outwards stretch out, piston rod 3 outwards stretches out the in-process and can drive Y type sealing washer 25 and open, makes the leakproofness effect of Y type sealing washer 25 and piston rod 3 better to make the sealed effect between uide bushing 4 and or the piston rod 3 better.

In some embodiments, a bearing seat 27 is further installed on the piston rod 3, so that the installation and connection of the utility model are more convenient.

When the hydraulic cylinder is used, when the piston rod 3 needs to extend out of the cylinder barrel 1, hydraulic oil enters the rodless cavity 8 through any one or more of the first oil inlet channels 12 or the second oil inlet channels 13, so that the pressure in the rodless cavity 8 is greater than that in the rod cavity 9, the hydraulic oil in the rodless cavity 8 pushes the piston 2 to move towards the guide sleeve 4, and the piston 2 drives the piston rod 3 to synchronously move while moving, so that the piston rod 3 extends out of the cylinder barrel 1; when the piston rod 3 needs to be retracted into the cylinder barrel 1, hydraulic oil enters the rod chamber 9 through any one or more of the first oil outlet channels 14 or the second oil outlet channels 15, the hydraulic oil stops being input into the rodless chamber 8, the pressure intensity in the rod chamber 9 is larger than the pressure intensity in the rodless chamber 8 along with the entry of the hydraulic oil into the rod chamber 9, the hydraulic oil in the rod chamber 9 pushes or the piston 2 moves towards the base 5, and the piston 2 drives the piston rod 3 to move synchronously while moving, so that the piston rod 3 is retracted into the cylinder barrel 1.

In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of description and are not intended to limit the scope of the utility model. Other variations or modifications will occur to those skilled in the art based on the foregoing disclosure and are within the scope of the utility model.

Claims

1. A horizontal supporting leg oil cylinder is characterized by comprising a cylinder body, wherein a rod cavity (9) and a rodless cavity (8) are arranged in the cylinder body, a base (5) is installed at one end of the cylinder body, an installation seat (6) is installed at the other end of the cylinder body, an oil inlet pipeline (10) and an oil outlet pipeline (11) are connected between the base (5) and the installation seat (6), a plurality of first oil inlet channels (12) communicated with the oil inlet pipeline (10) and the rodless cavity (8) are formed in the base (5), a plurality of first oil outlet channels (14) communicated with the oil outlet pipeline (11) are further formed in the base (5), and a second oil inlet channel (13) communicated with the oil inlet pipeline (10) and a second oil outlet channel (15) communicated with the oil outlet pipeline (11) are further formed in the installation seat (6); the cylinder body is also provided with an oil outlet joint (16) communicated with the rod cavity (9) and the oil outlet pipeline (11).

2. The horizontal leg cylinder according to claim 1, wherein the central portions of the oil inlet line (10) and the oil outlet line (11) are recessed downward and fixed to the cylinder body.

3. The horizontal support oil cylinder according to claim 1, wherein the cylinder body comprises a cylinder barrel (1), a piston rod (3), a piston (2) and a guide sleeve (4), the guide sleeve (4) and a base (5) are respectively located at two ends of the cylinder barrel (1), the piston (2) is located in the cylinder barrel (1), one end of the piston rod (3) is fixed with the piston (2), and the piston rod (3) penetrates through the guide sleeve (4) and extends outwards.

4. The horizontal leg cylinder according to claim 3, wherein the piston rod (3) is further provided with a spacer (7), the spacer (7) is positioned in front of the piston (2), and the diameter of the spacer (7) is smaller than that of the piston (2).

5. The horizontal leg cylinder according to claim 3, wherein the inner wall of the piston (2) and the inner wall of the spacer (7) are further embedded with a first O-shaped sealing ring (17).

6. The horizontal support oil cylinder as claimed in claim 3, wherein the piston (2) is in threaded connection with the piston rod (3), the piston rod (3) is further provided with an annular groove (18), a steel ball (19) is mounted in the annular groove (18), the piston (2) is further provided with a threaded hole (20), and a locking screw (21) which abuts against the steel ball (19) is mounted in the threaded hole (20).

7. The horizontal leg cylinder according to claim 3, characterized in that a rectangular sealing ring (22) is embedded on the outer wall of the piston (2).

8. The horizontal leg oil cylinder according to claim 3, wherein the guide sleeve (4) is in threaded connection with the cylinder barrel (1), and a second O-shaped sealing ring (23) is embedded in the outer wall of the guide sleeve (4).

9. The horizontal leg cylinder according to any one of claims 3 to 8, wherein an L-shaped sealing ring (24), a Y-shaped sealing ring (25) and a third O-shaped sealing ring (26) are embedded in the inner wall of the guide sleeve (4), and the small-diameter end of the L-shaped sealing ring (24) extends towards the outer end of the guide sleeve (4).

10. The horizontal leg cylinder according to claim 3, wherein a bearing seat (27) is further mounted on the piston rod (3).