Oil cylinder with extendable piston rod

Abstract

The utility model belongs to the technical field of oil cylinders, and particularly relates to an oil cylinder with an extendable piston rod, which comprises an oil cylinder main body and an extension mechanism, the extension mechanism comprises a plurality of first springs, a plurality of limiting blocks, two control rings, an extension rod and a plurality of fixing blocks, the inner wall of the oil cylinder main body is provided with a mounting groove, the inner wall of the mounting groove is provided with a sliding groove, and the inner wall of the sliding groove is provided with a sliding block. A fixing groove is formed in the inner wall of the mounting groove, connecting holes are formed in the inner walls of the sliding grooves, limiting grooves are formed in the outer wall of the oil cylinder body, the multiple first springs are arranged in the corresponding connecting holes respectively, the limiting blocks are arranged on the outer walls of the corresponding sliding grooves respectively, and the two control rings are arranged on the inner walls of the corresponding limiting grooves respectively. When the oil cylinder is used for transmitting power to mechanical equipment, the length of the piston rod of the oil cylinder main body can be adjusted, so that the oil cylinder main body can adapt to different use environments, and the working efficiency of the mechanical equipment is improved.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic cylinder technology and is a hydraulic cylinder with an extendable piston rod. Background Technology

[0002] Mechanical equipment typically consists of a complex series of components, including engines, gears, bearings, and transmission mechanisms, which work together to accomplish specific tasks. When in use, mechanical equipment generally requires power transmission via hydraulic cylinders.

[0003] When power is transmitted to mechanical equipment via hydraulic cylinders, if the distance between the hydraulic cylinder and the mechanical equipment is too far, the hydraulic cylinder may not be able to connect to the mechanical equipment, thus preventing power transmission and causing the mechanical equipment to malfunction. Workers usually use auxiliary tools (such as connecting pipes) to extend the distance, but because the distance is not fixed, it is not easy to find suitable auxiliary tools in time, which affects the normal operation of the mechanical equipment. Summary of the Invention

[0004] The purpose of this invention is to provide a hydraulic cylinder with an extendable piston rod to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes a hydraulic cylinder with an extendable piston rod, comprising a cylinder body and an extension mechanism. The extension mechanism includes multiple first springs, multiple limiting blocks, two control rings, an extension rod, and multiple fixing blocks. The inner wall of the cylinder body has an installation groove, and the inner wall of the installation groove has a sliding groove and a fixing groove. The outer wall of the cylinder body has a limiting groove, and the inner wall of the sliding groove has a connecting hole that penetrates the limiting groove. The multiple first springs are respectively disposed inside the corresponding connecting holes. The multiple limiting blocks are respectively connected to the other end of the corresponding first springs and are slidably connected to the sliding grooves. The control rings are disposed on the outer wall of the limiting blocks. The extension rod is disposed inside the installation groove, and the multiple fixing blocks are respectively disposed on the outer wall of the extension rod.

[0006] Specifically, the cylinder body includes a housing, a piston rod, and a mounting block, wherein the piston rod is installed inside the housing, and the mounting block is located at the other end of the piston rod.

[0007] Specifically, the outer wall of the cylinder body is equipped with a fixing mechanism, wherein,

[0008] The fixing mechanism includes a sleeve, a hinge, a fixing shell, a locking block, multiple locking bolts, multiple second springs, multiple connecting blocks, and fixing holes. The sleeve is fitted onto the outer wall of the cylinder body, the hinge is installed on the outer wall of the sleeve, the fixing shell is located at one end of the sleeve and connected to the sleeve via the hinge, the locking block is installed on the inner wall of the fixing shell, the outer wall of the fixing shell has a connecting groove, and the inner wall of the connecting groove has an installation hole. Multiple locking bolts are installed inside their respective installation holes, multiple second springs are fitted onto the outer walls of their respective locking bolts, and the multiple installation holes are connected to the other ends of their respective second springs. Multiple connecting blocks are fixed to the bottom wall of their respective fixing shells, and the outer walls of the multiple connecting blocks each have corresponding fixing holes.

[0009] Specifically, one end of the extension rod 29 is provided with a rotating assembly, which includes a rotating shaft, a fixed frame and two connecting rods. The rotating shaft is installed at one end of the cylinder body and the fixed frame is connected to the other end of the rotating shaft.

[0010] Specifically, a sealing ring is provided at the connection between the outer casing and the piston rod.

[0011] Specifically, the mounting block has gaskets inside.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] When using this invention to transmit power to mechanical equipment, the length of the piston rod of the cylinder body can be adjusted to allow the cylinder body to adapt to different operating environments, thereby improving the working efficiency of the mechanical equipment. Attached Figure Description

[0014] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the limiting block and the control ring of this utility model.

[0017] Figure 3 This is a schematic diagram of the structure of the sleeve and the fixed shell of this utility model.

[0018] Figure 4 This utility model Figure 2 A magnified structural diagram at point A in the middle;

[0019] Figure 5 This utility model Figure 3 A magnified structural diagram at point B in the middle.

[0020] In the diagram: 1. Cylinder body; 11. Outer shell; 12. Piston rod; 13. Mounting block; 2. Extension mechanism; 21. Mounting groove; 22. Slide groove; 23. Fixing groove; 24. Connecting hole; 25. Limiting groove; 26. First spring; 27. Limiting block; 28. Control ring; 29. ​​Extension rod; 210. Fixing block; 3. Fixing mechanism; 31. Sleeve; 32. Hinge; 33. Fixing shell; 34. Locking block; 35. Connecting groove; 36. Mounting hole; 37. Bolt; 38. Second spring; 39. Connecting block; 310. Fixing hole; 4. Rotating assembly; 41. Rotating shaft; 42. Fixing frame; 43. Connecting rod; 5. Sealing ring; 6. Gasket. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0022] The following description, with reference to the accompanying drawings, describes an embodiment of the present invention: a hydraulic cylinder with an extendable piston rod.

[0023] like Figures 1-5 As shown, an embodiment of the present invention provides a piston rod extendable hydraulic cylinder, comprising a cylinder body 1 and an extension mechanism 2.

[0024] The extension mechanism 2 includes multiple first springs 26, multiple limiting blocks 27, two control rings 28, an extension rod 29, and multiple fixing blocks 210. The inner wall of the cylinder body 1 is provided with an installation groove 21, and the inner wall of the installation groove 21 is provided with a sliding groove 22 and a fixing groove 23. The outer wall of the cylinder body 1 is provided with a limiting groove 25. The inner wall of the sliding groove 22 is provided with a connecting hole 24, and the connecting hole 24 passes through the limiting groove 25. Multiple first springs 26 are respectively disposed inside the corresponding connecting holes 24. Multiple limiting blocks 27 are respectively connected to the other end of the corresponding first springs 26, and the limiting blocks 27 are slidably connected to the sliding groove 22. The control rings 28 are disposed on the outer wall of the limiting blocks 27. The extension rod 29 is disposed inside the installation groove 21. Multiple fixing blocks 210 are respectively disposed on the outer wall of the extension rod 29.

[0025] Specifically, when using the hydraulic cylinder body 1, the operator will first adjust the piston rod 12 of the hydraulic cylinder body 1 according to the installation position. When the piston rod 12 is not long enough, the control ring 28 is pulled, and the control ring 28 drives the limiting block 27 to slide out of the slide groove 22 into the connecting hole 24. Then, the extension rod 29 is rotated so that the extension rod 29 slides out of the fixing groove 23 into the slide groove 22. Then, the control ring 28 is released. At this time, the limiting block 27 will pop out of the connecting hole 24 into the slide groove 22 under the elastic force of the first spring 26. Then, the extension rod 29 is pulled outward. At this time, the fixing block 210 on the outer wall of the extension rod 29 will... Sliding in the slide groove 22, when the fixed block 210 contacts the limiting block 27 at the other end of the slide groove 22, the extension rod 29 is pulled outward. The fixed block 210 on the outer wall of the extension rod 29 will squeeze the limiting block 27 into the connecting hole 24. When the fixed block 210 and the connection between the fixed groove 23 and the slide groove 22 are aligned, the fixed block 210 is inserted into the fixed groove 23 by rotating the extension rod 29. Then, the limiting block 27, which is no longer squeezed by the fixed block 210, will pop out from the connecting hole 24 under the elastic force of the first spring 26, fixing the fixed block 210 in the fixed groove 23, thereby realizing the adjustment of the length of the piston rod 12.

[0026] In one embodiment of this utility model, such as Figure 1 As shown, the cylinder body 1 includes a housing 11, a piston rod 12, and a mounting block 13.

[0027] The piston rod 12 is installed inside the housing 11, and the mounting block 13 is disposed at the other end of the piston rod 12.

[0028] Specifically, the cylinder body 1 is supplied with hydraulic oil through the housing 11, which pushes the piston rod 12 to reciprocate, and the piston rod 12 is mounted to other mechanical parts via the mounting block 13.

[0029] In one embodiment of this utility model, such as Figure 3 and Figure 5 As shown, a fixing mechanism 3 is provided on the outer wall of the cylinder body 1.

[0030] The fixing mechanism 3 includes a sleeve 31, a hinge 32, a fixing shell 33, a locking block 34, multiple locking bolts 37, multiple second springs 38, and multiple connecting blocks 39.

[0031] The sleeve 31 is fitted onto the outer wall of the cylinder body 1, the hinge 32 is installed on the outer wall of the sleeve 31, the fixing shell 33 is located at one end of the sleeve 31 and is connected to the sleeve 31 through the hinge 32, the locking block 34 is installed on the inner wall of the fixing shell 33, the outer wall of the fixing shell 33 has a connecting groove 35, the inner wall of the connecting groove 35 has an installation hole 36, multiple bolts 37 are respectively installed inside the corresponding installation holes 36, multiple second springs 38 are respectively fitted onto the outer wall of the corresponding bolts 37, the multiple installation holes 36 are respectively connected to the other end of the corresponding second springs 38, multiple connecting blocks 39 are respectively fixed to the bottom wall of the corresponding fixing shell 33, and the outer wall of the multiple connecting blocks 39 has a corresponding fixing hole 310.

[0032] Specifically, after adjusting the piston rod 12, the sleeve 31 is fitted onto the outer wall of the piston rod 12. Then, the locking block 34 on the inner wall of the fixing shell 33 is aligned with the limiting groove 25. At this time, the upper part of the fixing shell 33 of the sleeve 31 is rotated by the hinge 32, so that the locking block 34 on the inner wall of the fixing shell 33 is engaged in the limiting groove 25. At this time, the limiting groove 25 is filled by the control ring 28 and the locking block 34. Then, the lower part of the fixing shell 33 of the sleeve 31 is rotated, so that the lower part of the fixing shell 33 is engaged in the limiting groove 25. The locking block 34 of the wall is simultaneously locked into the limiting groove 25. At this time, the connecting block 39 at the bottom of the upper part of the fixed shell 33 will be locked into the connecting groove 35. At the same time, the locking bolt 37 will be squeezed into the mounting hole 36 by the connecting block 39. As the fixing hole 310 on the outer wall of the connecting block 39 aligns with the mounting hole 36, the locking bolt 37 will be popped out of the mounting hole 36 into the fixing hole 310 by the second spring 38, thereby fixing the upper and lower parts of the fixed shell 33, making it difficult for the adjusted piston rod 12 to be displaced.

[0033] In one embodiment of this utility model, such as Figure 1 As shown, a rotating component 4 is placed at one end of the extension rod 29.

[0034] The rotating assembly 4 includes a rotating shaft 41, a fixed frame 42, and two connecting rods 43.

[0035] The rotating shaft 41 is installed at one end of the cylinder body 1, and the fixed frame 42 is connected to the other end of the rotating shaft 41.

[0036] Specifically, the angle of the mounting block 13 can be finely adjusted by the cooperation of the rotating shaft 41 and the connecting rod 43, so that the cylinder body 1 can be connected to machines at different angles.

[0037] In one embodiment of this utility model, such as Figure 1 As shown, a sealing ring 5 is provided at the connection between the outer casing 11 and the piston rod 12.

[0038] The sealing ring 5 is used to seal the connection between the housing 11 and the piston rod 12 to prevent hydraulic oil from leaking through the housing 11 and the piston rod 12.

[0039] In one embodiment of this utility model, such as Figure 1 As shown, a gasket 6 is provided inside the mounting block 13.

[0040] When connecting the swing cylinder body 1 to the mechanical connection, the tightness of the connection can be improved by placing a gasket 6 inside the mounting block 13.

[0041] In summary, when using this utility model to transmit power to mechanical equipment, the length of the piston rod 12 of the cylinder body 1 can be adjusted, allowing the cylinder body 1 to adapt to different operating environments, thereby improving the working efficiency of the mechanical equipment.

[0042] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A hydraulic cylinder with an extendable piston rod, characterized in that, Includes a hydraulic cylinder body (1) and an extension mechanism (2), wherein, The extension mechanism (2) includes multiple first springs (26), multiple limiting blocks (27), two control rings (28), an extension rod (29), and multiple fixing blocks (210), wherein, The inner wall of the cylinder body (1) is provided with an installation groove (21); The inner wall of the mounting groove (21) is provided with a sliding groove (22) and a fixing groove (23); The outer wall of the cylinder body (1) is provided with a limiting groove (25); The inner wall of the slide groove (22) is provided with a connecting hole (24), and the connecting hole (24) penetrates the limiting groove (25); Multiple first springs (26) are respectively disposed inside the corresponding connecting holes (24), and multiple limiting blocks (27) are respectively connected to the other end of the corresponding first springs (26), and the limiting blocks (27) are slidably connected to the slide groove (22); The control ring (28) is disposed on the outer wall of the limiting block (27); The extension rod (29) is disposed inside the mounting groove (21); Multiple fixing blocks (210) are respectively disposed on the outer wall of the extension rod (29).

2. A hydraulic cylinder with an extendable piston rod according to claim 1, characterized in that, The cylinder body (1) includes a shell (11), a piston rod (12), and a mounting block (13), wherein, The piston rod (12) is installed inside the housing (11), and the mounting block (13) is disposed at the other end of the piston rod (12).

3. A hydraulic cylinder with an extendable piston rod according to claim 2, characterized in that, The outer wall of the piston rod (12) is provided with a fixing mechanism (3), wherein, The fixing mechanism (3) includes a sleeve (31), multiple hinges (32), multiple fixing shells (33), multiple locking blocks (34), multiple locking bolts (37), multiple second springs (38), and multiple connecting blocks (39), wherein, The sleeve (31) is fitted onto the outside of the cylinder body (1); The plurality of hinges (32) are respectively installed at both ends of the sleeve (31); Each of the plurality of fixed shells (33) is connected to a corresponding hinge (32); The plurality of the card blocks (34) are respectively installed on the inner wall of the corresponding fixed shell (33); The outer wall of the fixed shell (33) is provided with a connecting groove (35); The inner wall of the connecting groove (35) is provided with a mounting hole (36); The plurality of said bolts (37) are respectively installed inside the corresponding mounting holes (36); Multiple second springs (38) are respectively sleeved on the outside of the corresponding latches (37), and multiple mounting holes (36) are respectively connected to the other end of the corresponding second springs (38); The plurality of connecting blocks (39) are respectively fixed to the bottom wall of the corresponding fixed shell (33); The outer walls of the multiple connecting blocks (39) are respectively provided with fixing holes (310).

4. A hydraulic cylinder with an extendable piston rod according to claim 1, characterized in that, One end of the extension rod (29) is provided with a rotating component (4), wherein, The rotating assembly (4) includes a rotating shaft (41), a fixed frame (42), and two connecting rods (43), wherein, The rotating shaft (41) is installed at one end of the cylinder body (1), and the fixing frame (42) is connected to the other end of the rotating shaft (41); The two connecting rods (43) are respectively disposed inside the fixed frame (42).

5. A hydraulic cylinder with an extendable piston rod according to claim 2, characterized in that, A sealing ring (5) is provided at the connection between the outer shell (11) and the piston rod (12).

6. A hydraulic cylinder with an extendable piston rod according to claim 2, characterized in that, The mounting block (13) has a gasket (6) inside.

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