Stroke-adjustable double-rod hydraulic cylinder

Abstract

The utility model provides a stroke-adjustable double-rod hydraulic cylinder, and belongs to the technical field of double-rod hydraulic cylinders. Comprising a hydraulic cylinder body, bases are arranged at the two ends of the hydraulic cylinder body in a protruding mode, an oil cavity is formed in the hydraulic cylinder body, a sealing seat is arranged in the oil cavity in a sliding mode, sliding rods are arranged at the two ends of the sealing seat in a protruding mode, protruding seats are arranged on the sides, away from the hydraulic cylinder body, of the bases in a protruding mode, and the sections, away from the sealing seat, of the sliding rods penetrate through the protruding seats to stretch out. A sliding cavity is formed in the sliding rod, and an adjusting rod is slidably arranged in the sliding cavity; the end, away from the sealing seat, of the adjusting rod extends out of the adjusting rod, an adjusting lantern ring is rotationally embedded in the end, away from the sealing seat, of the adjusting rod, the adjusting rod penetrates through the adjusting lantern ring and extends out, and a connecting ring is fixed to one end of the adjusting rod. According to the utility model, the rod body can be adjusted to a specified length according to different application scenes during working, the piston rod can adapt to different application scenes through the diversified adjustment of the length of the piston rod, and the overall practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of double-rod hydraulic cylinders, in particular to a double-rod hydraulic cylinder with adjustable stroke. Background Art

[0002] A twin-rod hydraulic cylinder is a common actuator in hydraulic systems. As the name suggests, a twin-rod hydraulic cylinder features a rod on both sides of the piston. It is typically hydraulically driven in both directions, achieving constant velocity reciprocating motion. The hydraulic cylinder's structure can be broadly divided into components such as the barrel and head, piston and rod, seals, and buffers. When the oil supply pressure and flow remain constant, and the two pistons in a twin-rod hydraulic cylinder have the same diameter, the cylinder's movement speed and force output remain the same in both directions. This is because the force-bearing areas on both sides of the piston are equal, and the presence of the twin rods ensures the cylinder maintains balance and stability during reciprocating motion.

[0003] Existing double-rod hydraulic cylinders often have fixed piston rod lengths at both ends, significantly limiting their flexibility and adaptability in various application scenarios. Since the overall stroke of the piston rod cannot be easily adjusted to meet actual needs, these hydraulic cylinders are unable to cope with diverse work tasks, thereby reducing the overall practicality and versatility of the device. Therefore, this application provides a double-rod hydraulic cylinder with adjustable stroke to meet these needs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a double-rod hydraulic cylinder with adjustable stroke to solve the problem that the piston rods of existing double-rod hydraulic cylinders are mostly fixed in length at both ends, which greatly limits their flexibility and adaptability in different application scenarios. Since the overall stroke of the piston rods cannot be easily adjusted according to actual needs, such hydraulic cylinders are unable to cope with diverse work tasks, thereby reducing the overall practicality and versatility of the device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A double-rod hydraulic cylinder with adjustable stroke, comprising a hydraulic cylinder body, bases protruding from both ends of the hydraulic cylinder body, an oil chamber provided inside the hydraulic cylinder body, a sealing seat slidably provided inside the oil chamber, slide rods protruding from both ends of the sealing seat, a protruding seat protruding from one side of the base away from the hydraulic cylinder body, a section of the slide rod away from the sealing seat extending through the protruding seat, a sliding chamber provided inside the slide rod, and an adjusting rod slidably provided inside the sliding chamber;

[0007] The end of the adjusting rod away from the sealing seat extends out of the adjusting rod, the end of the adjusting rod away from the sealing seat is rotatably embedded with an adjusting collar, the adjusting rod is passed through and installed on the adjusting collar and extends out, the adjusting rod and the adjusting collar are threadedly engaged, and the end of the adjusting rod away from the sealing seat is fixed with a connecting ring.

[0008] Optionally, a conducting pipe is installed at the top of the base, a conducting groove is opened inside the base, the oil chamber is connected to the conducting groove, and the conducting pipe is connected to the conducting groove.

[0009] Optionally, an embedding groove is provided on the outer side of the adjusting rod, and a scale plate is embedded in the embedding groove.

[0010] Optionally, the scale plate is engraved with scale lines, and the scale lines are engraved with length scale lines.

[0011] Optionally, a slideway for the adjusting rod to slide is provided inside the sliding rod, a limit rod is horizontally fixed in the slideway, and a limit groove for the limit rod to pass through is provided on the adjusting rod.

[0012] Optionally, the vertical cross-section of the limiting rod is rectangular, and the limiting rod is in the shape of a long rod.

[0013] Optionally, a sealing ring is embedded and installed on the outer side of the sealing seat, and a plurality of sealing rings are embedded and installed on the sealing seat at equal distances.

[0014] Optionally, a sealing groove is formed in the protruding seat corresponding to the extended end of the sliding rod, and a sealing gasket is embedded in the sealing groove.

[0015] Optionally, a mounting groove is provided at the bottom of the side of the base away from the hydraulic cylinder body, a mounting bracket is clamped and installed at the mounting groove, and the mounting bracket is connected and fixed to the mounting groove by positioning bolts.

[0016] Optionally, mounting holes are provided on adjacent sides of the two bases, and a connecting rod is installed between the two mounting holes.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] In the above scheme, by providing cooperation between the sliding rod and the adjusting rod and the adjusting collar, the adjusting collar can be rotated before operation, and the adjusting rod and the adjusting collar are threadedly engaged, thereby moving the adjusting rod as a whole, so that the adjusting rod can be adjusted to a specified length. During operation, the rod body can be adjusted to a specified length according to different application scenarios. By adjusting the piston rod length in a variety of ways, it can adapt to different application scenarios, thereby improving the overall practicality of the device.

[0019] By means of the scale plate provided on the adjusting rod, the overall extended length of the adjusting rod after adjustment can be effectively determined and interpreted during the adjustment process.

[0020] By setting the sealing gasket at the outer edge of the sealing seat, it can be ensured that the oil in the oil chambers on the left and right sides do not interfere with each other during the adjustment process, and the oil in the left and right oil chambers can be prevented from flowing into each other as much as possible, thereby ensuring the overall sealing of the oil chambers on the left and right sides. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments of the invention and, together with the description, further serve to explain the principles of the invention and enable those skilled in the relevant art to make and use the invention.

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of a double-rod hydraulic cylinder with adjustable stroke;

[0023] Figure 2 It is a longitudinal sectional view of a double-rod hydraulic cylinder with adjustable stroke;

[0024] Figure 3 Double-rod hydraulic cylinder with adjustable stroke Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0025] Figure 4 Double-rod hydraulic cylinder with adjustable stroke Figure 2 Schematic diagram of the enlarged structure at point B in the middle.

[0026] [reference numerals]

[0027] 1. Base; 2. Hydraulic cylinder body; 21. Oil chamber; 3. Conducting pipe; 31. Conducting groove; 32. Protruding seat; 321. Sealing gasket; 4. Connecting rod; 5. Mounting frame; 51. Positioning bolt; 52. Mounting groove; 6. Sealing seat; 61. Sealing ring; 7. Sliding rod; 8. Adjusting rod; 81. Scale plate; 82. Limiting groove; 9. Adjusting collar; 10. Limiting rod; 11. Connecting ring.

[0028] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, devices and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments. DETAILED DESCRIPTION

[0029] The following describes in detail a double-rod hydraulic cylinder with adjustable stroke provided by the present invention, with reference to the accompanying drawings and specific embodiments. It is also noted that, for the sake of completeness, the following embodiments are best and preferred embodiments, and those skilled in the art may employ alternative implementations for some known technologies. Furthermore, the accompanying drawings are intended only to provide a more detailed description of the embodiments and are not intended to limit the present invention.

[0030] It should be noted that references in the specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," etc. indicate that the described embodiments may include specific features, structures, or characteristics, but not every embodiment necessarily includes such specific features, structures, or characteristics. In addition, when specific features, structures, or characteristics are described in conjunction with an embodiment, it is within the knowledge of persons skilled in the relevant art to implement such features, structures, or characteristics in conjunction with other embodiments (whether or not explicitly described).

[0031] In general, terms can be understood, at least in part, from their use in context. For example, depending at least in part on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense. Additionally, the term "based on" can be understood as not necessarily intended to convey an exclusive set of factors, but can instead, depending at least in part on the context, allow for the presence of other factors that are not necessarily explicitly described.

[0032] It will be understood that the meanings of “on,” “over,” and “above” in the present invention should be interpreted in the broadest manner, so that “on” means not only “directly on” something but also includes the meaning of being “on” something with intervening features or layers, and “on” or “above” means not only “on” or “above” something but also includes the meaning of being “on” or “above” something with no intervening features or layers.

[0033] Additionally, spatially relative terms such as "below," "beneath," "lower," "above," and "upper" may be used herein for descriptive convenience to describe the relationship of one element or feature to another element or features, as illustrated in the accompanying drawings. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially relative descriptors used herein should be similarly interpreted accordingly.

[0034] like Figure 1 and Figure 2As shown, the embodiment of the present invention provides a double-rod hydraulic cylinder with adjustable stroke, including a hydraulic cylinder body 2, a base 1 is protruding from both ends of the hydraulic cylinder body 2, an oil chamber 21 is opened inside the hydraulic cylinder body 2, a guide tube 3 is installed at the top of the base 1, a guide groove 31 is opened inside the base 1, the oil chamber 21 and the guide groove 31 are connected, the guide tube 3 is connected to the guide groove 31, a sealing seat 6 is slidingly provided inside the oil chamber 21, and a slide rod 7 is protruding from both ends of the sealing seat 6. The base 1 is away from the hydraulic cylinder A protruding seat 32 is protrudingly provided on one side of the body 2, and a section of the sliding rod 7 away from the sealing seat 6 extends through the protruding seat 32. A sliding cavity is provided inside the sliding rod 7, and an adjusting rod 8 is slidingly provided in the sliding cavity. The adjusting rod 8 extends out of the end away from the sealing seat 6, and an adjusting collar 9 is rotatably embedded in the end of the adjusting rod 8 away from the sealing seat 6. The adjusting rod 8 is passed through and installed in the adjusting collar 9 and extends out. The adjusting rod 8 and the adjusting collar 9 are threadedly matched, and a connecting ring 11 is fixed to the end of the adjusting rod 8 away from the sealing seat 6.

[0035] By cooperating between the slide rod 7 and the adjusting rod 8 and the adjusting collar 9, the adjusting collar 9 can be rotated before work, and the adjusting rod 8 and the adjusting collar 9 can be threadedly engaged, so that the adjusting rod 8 can be moved as a whole, so that the adjusting rod 8 can be adjusted to a specified length. During work, the rod body can be adjusted to a specified length according to different application scenarios. By adjusting the piston rod length in a variety of ways, it can adapt to different application scenarios and improve the overall practicality of the device.

[0036] A plurality of sealing rings 61 are embedded and mounted on the outer edge of the sealing seat 6 at equal intervals. The sealing rings 61 disposed on the outer edge of the sealing seat 6 ensure that the oil in the left and right oil chambers 21 do not interfere with each other during adjustment, minimizing oil flow between the left and right oil chambers 21 and ensuring the overall sealing of the left and right oil chambers 21.

[0037] Two bases 1 are provided with mounting holes on adjacent sides, and a connecting rod 4 is installed between the two mounting holes. Through the arrangement of the base 1 and the interconnected connecting rod 4, it can be ensured that the base 1 can be effectively pulled and the hydraulic cylinder body 2 located in the center can be effectively protected.

[0038] like Figure 1 and Figure 3 As shown, an embedding groove is provided on the outer side of the adjusting rod 8, and a scale plate 81 is embedded in the embedding groove. The scale plate 81 is engraved with scale lines, and the scale lines are engraved with length scale lines. By setting the scale plate 81 on the adjusting rod 8, the overall extended length of the adjusting rod 8 after adjustment can be effectively determined and judged during the adjustment process.

[0039] A mounting groove 52 is provided at the bottom of the base 1 on one side away from the hydraulic cylinder body 2, and a mounting bracket 5 is clamped and installed at the mounting groove 52. The mounting bracket 5 and the mounting groove 52 are connected and fixed by positioning bolts 51. By setting the mounting bracket 5, the hydraulic cylinder can be conveniently fixed at the corresponding position during operation.

[0040] The protruding seat 32 is provided with a sealing groove at the protruding end of the slide rod 7, and a sealing gasket 321 is embedded in the sealing groove. Through the cooperation between the provided sealing groove and the sealing gasket 321, the protruding end of the slide rod 7 can be effectively sealed during operation to avoid leakage as much as possible.

[0041] like Figure 1 、 Figure 2 and Figure 4 As shown, a slideway for the adjusting rod 8 to slide is provided inside the slide rod 7, and a limit rod 10 is fixed horizontally in the slideway. A limit groove 82 for the limit rod 10 to pass through is provided on the adjusting rod 8. The vertical cross-section of the limit rod 10 is rectangular, and the limit rod 10 is in the shape of a long rod. Through the cooperation between the set limit groove 82 and the limit rod 10, it can be ensured that the adjusting rod 8 can only move horizontally during the adjustment process, and rotation and the like can be avoided as much as possible during the adjustment process.

[0042] The working principle of the technical solution provided by the utility model is as follows:

[0043] During operation, the mounting bracket 5 is installed in the mounting groove 52 through the positioning bolt 51, the double-rod hydraulic cylinder is installed in the corresponding position through the mounting bracket 5 and the bolt, and the conducting pipe 3 is connected to the oil pump. When adjusting, the overall pushing processing of the sealing seat 6 position is achieved by injecting oil into different conducting pipes 3, thereby achieving the overall adjustment of the extension length of the sliding rods 7 at both ends.

[0044] Before work, when it is necessary to adjust the overall extension length of the adjusting rod 8, rotate the adjusting collar 9, and the adjusting rod 8 and the adjusting collar 9 are threaded together, so that the adjusting rod 8 moves as a whole, so that the adjusting rod 8 can be adjusted to the specified length. During the adjustment process, the limit rod 10 can ensure that the adjusting rod 8 can only move horizontally during the adjustment process, which can effectively avoid rotation and the like during the adjustment process of the adjusting rod 8.

[0045] This invention encompasses any alternatives, modifications, equivalents, and solutions that do not depart from the spirit and scope of this invention. To provide a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments of this invention, but those skilled in the art will be able to fully understand this invention without these detailed descriptions. Furthermore, to avoid unnecessary confusion regarding the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0046] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A double-rod hydraulic cylinder with adjustable stroke, characterized in that: It includes a hydraulic cylinder body, both ends of the hydraulic cylinder body are protrudingly provided with a base, an oil chamber is opened inside the hydraulic cylinder body, a sealing seat is slidably provided inside the oil chamber, a sliding rod is protrudingly provided at both ends of the sealing seat, a protruding seat is protrudingly provided on a side of the base away from the hydraulic cylinder body, a section of the sliding rod away from the sealing seat extends through the protruding seat, a sliding chamber is opened inside the sliding rod, and an adjusting rod is slidably provided in the sliding chamber; The end of the adjusting rod away from the sealing seat extends out of the adjusting rod, the end of the adjusting rod away from the sealing seat is rotatably embedded with an adjusting collar, the adjusting rod is passed through and installed on the adjusting collar and extends out, the adjusting rod and the adjusting collar are threadedly engaged, and the end of the adjusting rod away from the sealing seat is fixed with a connecting ring.

2. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: A conducting pipe is installed at the top of the base, a conducting groove is opened inside the base, the oil chamber is connected to the conducting groove, and the conducting pipe is communicated with the conducting groove.

3. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: An embedding groove is provided on the outer side of the regulating rod, and a scale plate is embedded in the embedding groove.

4. The double-rod hydraulic cylinder with adjustable stroke according to claim 3, characterized in that: The scale plate is engraved with scale lines, and the scale lines are engraved with length scale lines.

5. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: A slideway for the adjustment rod to slide is provided inside the slide rod, a limit rod is horizontally fixed in the slideway, and a limit groove for the limit rod to pass through is provided on the adjustment rod.

6. The double-rod hydraulic cylinder with adjustable stroke according to claim 5, characterized in that: The vertical cross section of the limiting rod is rectangular, and the limiting rod is in the shape of a long rod.

7. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: A sealing ring is embedded and installed on the outer side of the sealing seat, and a plurality of sealing rings are embedded and installed on the sealing seat at equal distances.

8. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: The protruding seat is provided with a sealing groove at the extended end corresponding to the sliding rod, and a sealing gasket is embedded in the sealing groove.

9. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: A mounting groove is provided at the bottom of the base on one side away from the hydraulic cylinder body, a mounting bracket is clamped and mounted on the mounting groove, and the mounting bracket is connected and fixed to the mounting groove by positioning bolts.

10. The double-rod hydraulic cylinder with adjustable stroke according to claim 1, characterized in that: Two adjacent sides of the two bases are each provided with a mounting hole, and a connecting rod is installed between the two mounting holes.

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