A double exit piston rod structure

Abstract

The utility model relates to the field of hydraulic and pneumatic technology provides a kind of double-out piston rod structure, comprising: cylinder body;Two connecting seats are set on the surface of the symmetric end of the cylinder body;Further comprising: two chutes are opened in the symmetric place of the cylinder body inner wall;Piston assembly is movably arranged in the inside of the cylinder body, and piston assembly includes: two piston bodies.The utility model discloses when hydraulic or pneumatic medium enters from oil inlet, the clamping groove on the surface of piston body is moved along the surface of chute in the inside of cylinder body, and cooperation positioning pin is embedded in the inside of positioning hole, and the installation part is positioned and installed by clamping groove, so that piston rod body moves in one direction, simultaneously, the medium is discharged from oil return port on the other side, so that piston rod body keeps synchronous output force and stroke, changes oil inlet direction to realize reverse movement of piston rod body, to realize the function of bidirectional drive, synchronous output.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic and pneumatic technology, and in particular to a double-outlet piston rod structure. Background Technology

[0002] A double-rod hydraulic cylinder or pneumatic cylinder typically refers to an actuator in which both ends of the piston rod extend out of the cylinder body.

[0003] Existing traditional single-outlet piston cylinder structures can only achieve power output in one direction during operation. If bidirectional action is required, additional reset springs, guide mechanisms, or reverse drive components are often needed, resulting in a complex overall structure, large size, and slow response. At the same time, although some existing dual-outlet structures have achieved bidirectional power output, they have problems such as poor sealing performance, unstable guidance, and high manufacturing costs. Therefore, solutions are needed. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art: the existing traditional single-outlet piston cylinder structure can only achieve power output in one direction during operation. If bidirectional action is required, it is often necessary to configure an additional reset spring, guide mechanism or reverse drive component, resulting in a complex overall structure, large size and slow response. At the same time, although some existing dual-outlet structures have achieved bidirectional power output, they have problems such as poor sealing performance, unstable guidance and high manufacturing cost.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a double-outlet piston rod structure, comprising: a cylinder body; two connecting seats disposed on the surfaces at both symmetrical ends of the cylinder body; and further comprising:

[0006] Two grooves are formed symmetrically on the inner wall of the cylinder.

[0007] A piston assembly, movably disposed inside the cylinder, includes:

[0008] Two piston bodies are slidably embedded in the inner wall of the cylinder, and the two piston bodies reciprocate left and right inside the cylinder.

[0009] Rod assembly; movably disposed inside the cylinder body, the rod assembly includes:

[0010] Two piston rods are slidably embedded in the inner wall of the cylinder, and the two piston rods reciprocate laterally inside the cylinder.

[0011] Preferably, an oil inlet is provided symmetrically on one side surface of the cylinder body, and an oil return port is provided on the center surface of the side surface of the cylinder body away from the oil inlet, and end caps are threaded onto the outer surfaces of the two connecting seats.

[0012] The technical advantages of adopting the above-mentioned further solution are: by opening an oil inlet and an oil outlet on the cylinder surface, it is convenient for the medium to enter and exit, and at the same time, the connecting seat is installed with the help of the end cover.

[0013] Preferably, the piston assembly further includes: a plurality of mounting grooves formed on the surfaces of the two piston bodies, a secondary sealing ring being provided inside the plurality of mounting grooves, slide rods being provided symmetrically on the surfaces of the two piston bodies, the plurality of slide rods being slidably embedded in the interior of the slide grooves, and retaining grooves being formed on the surfaces of the two piston bodies on opposite sides.

[0014] The technical effect of adopting the above-mentioned further solution is that the secondary sealing ring on the inner wall of the mounting groove fits into the inside of the cylinder to provide sealing, while the sliding groove provides limiting function for the sliding rod, and the surface has a slot to facilitate the installation of parts.

[0015] Preferably, the rod assembly further includes: two mounting parts, which are respectively fixedly disposed on one end surface of the two piston rod bodies, the two mounting parts are movably embedded in the inside of the slot, and positioning holes are formed on the surface of the two mounting parts.

[0016] The technical advantage of adopting the above-mentioned further solution is that the mounting part on the surface of the piston rod body is embedded in the slot, which facilitates installation, and the surface is provided with positioning holes for quick positioning.

[0017] Preferably, the inner walls of the two end caps are provided with dustproof rings, and the two dustproof rings are movably fitted onto the surfaces of the two piston rod bodies.

[0018] The technical effect of adopting the above-mentioned further solution is that the dustproof ring on the inner wall of the end cap is slidably fitted onto the outer surface of the piston rod body, further enhancing the sealing performance.

[0019] Preferably, the inner walls of the two end caps are provided with main sealing rings, and one side surface of the two main sealing rings is movably connected to the outer end surface of the connecting seat.

[0020] The technical effect of adopting the above-mentioned further solution is that when the main sealing ring inside the end cap is connected to the surface of the connecting seat, a sealing operation is performed.

[0021] Preferably, springs are fixedly provided on one side surface of the two piston bodies, and locating pins are fixedly provided on one end of the two springs.

[0022] The technical effect of adopting the above-mentioned further solution is that by connecting the two ends of the spring to the surfaces of the piston body and the positioning pin respectively, the positioning pin is provided with a reset capability, which facilitates rapid positioning.

[0023] Preferably, the two positioning holes are movably fitted onto the surface of the positioning pin, and a connecting plate is provided on one end surface of the two piston rod bodies.

[0024] The technical effect of adopting the above-mentioned further solution is that the positioning pin is embedded in the positioning hole to complete the positioning work of the piston rod body, thereby driving the connecting plate to move.

[0025] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0026] 1. In this utility model, when hydraulic or pneumatic medium enters from the oil inlet, it pushes the groove on the surface of the piston body to move along the surface of the slide groove inside the cylinder. It works in conjunction with the positioning pin embedded in the positioning hole to position and install the mounting part through the groove, so that the piston rod body moves in one direction. At the same time, the medium is discharged from the oil return port on the other side, so that the piston rod body maintains synchronous output force and stroke. Changing the oil inlet direction can realize the reverse movement of the piston rod body, thereby realizing the function of bidirectional drive and synchronous output.

[0027] 2. In this utility model, the secondary sealing ring inside the mounting groove slides and fits against the inner wall of the cylinder to provide a sealing function. At the same time, the end cover is threaded onto the surface of the connecting seat, and the main sealing ring inside fits against the end face of the connecting seat. The dustproof ring on the inner wall of the end cover is fitted onto the surface of the oil return port to perform a second sealing function, ensuring the overall sealing performance and guiding accuracy. Attached Figure Description

[0028] Figure 1 This utility model provides a schematic diagram of the unfolded structure of a double-outlet piston rod structure;

[0029] Figure 2 This utility model provides a partial cross-sectional view of a dual-outlet piston rod structure.

[0030] Figure 3 This utility model provides a partially unfolded structural diagram of a dual-outlet piston rod structure;

[0031] Figure 4 This utility model proposes a double-outlet piston rod structure. Figure 2 Enlarged structural diagram at point A in the middle.

[0032] Legend:

[0033] 1. Cylinder block; 101. Connecting seat; 1011. End cap; 1012. Dust seal; 1013. Main seal ring; 102. Oil inlet; 103. Oil return port; 104. Slide groove; 2. Piston body; 201. Mounting groove; 2011. Secondary seal ring; 202. Slide rod; 203. Snap-in groove; 204. Spring; 2041. Locating pin; 3. Piston rod body; 301. Mounting part; 302. Locating hole; 303. Connecting plate. Detailed Implementation

[0034] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0036] Example 1, such as Figure 1-4 As shown, this utility model provides a dual-output piston rod structure, including: a cylinder body 1, with two connecting seats 101 provided on the outer surfaces of the symmetrical ends of the cylinder body 1 for mounting the entire device to an external device. The inner wall of the cylinder body 1 has symmetrically formed sliding grooves 104 for guiding the movement trajectory of the piston assembly and the rod assembly. The piston assembly includes two piston bodies 2, which can slide left and right along the inner wall of the cylinder body 1; the rod assembly includes two piston rod bodies 3, which can reciprocate laterally inside the cylinder body 1 and are linked with the piston bodies 2 to achieve bidirectional output function.

[0037] In this embodiment, when hydraulic or pneumatic medium enters from the oil inlet 102, it pushes the groove 203 on the surface of the piston body 2 to move along the surface of the slide groove 104 inside the cylinder body 1. The positioning pin 2041 is embedded in the positioning hole 302. The mounting part 301 is positioned and installed through the groove 203, so that the piston rod body 3 moves in one direction. At the same time, the medium is discharged from the oil return port 103 on the other side, so that the piston rod body 3 maintains synchronous output force and stroke. Changing the oil inlet direction can realize the reverse movement of the piston rod body 3, thereby realizing the function of bidirectional drive and synchronous output.

[0038] Example 2: Cylinder body 1, with symmetrical oil inlets 102 on one side surface and an oil return port 103 at the center of the other side. End caps 1011 are threaded to the outer ends of two connecting seats 101. Dustproof rings 1012 and main sealing rings 1013 are provided inside the end caps 1011 to seal the gap between the piston rod body 3 and the cylinder body 1. The piston assembly includes two piston bodies 2, each with a mounting groove 201 on its surface. A secondary sealing ring 2011 is embedded in the groove, and sliding rods 202 are provided on symmetrical sides, slidingly engaging with sliding grooves 104 inside the cylinder body 1. A retaining groove 203 and a positioning pin 2041 driven by a spring 204 are provided on opposite sides of the piston body 2. The rod assembly includes two piston rod bodies 3, one end of which has a mounting part 301 that inserts into the retaining groove 203 and engages with the positioning pin 2041 for quick locking. The mounting part 301 has a positioning hole 302 on its surface, and a connecting plate 303 at the other end for connecting external actuators.

[0039] In this embodiment, the secondary sealing ring 2011 inside the mounting groove 201 slides against the inner wall of the cylinder 1 to provide a sealing function. At the same time, the end cover 1011 is threaded onto the surface of the connecting seat 101. With the help of the internal main sealing ring 1013, it fits against the end face of the connecting seat 101. The dustproof ring 1012 on the inner wall of the end cover 1011 is fitted onto the surface of the oil return port 103 to perform a second sealing function, ensuring the overall sealing performance and guiding accuracy.

[0040] Working principle: During use, when hydraulic or pneumatic medium enters through the oil inlet 102, it pushes the groove 203 on the surface of the piston body 2 to move along the surface of the slide groove 104 inside the cylinder body 1. This, combined with the positioning pin 2041 embedded in the positioning hole 302, allows the mounting part 301 to be positioned and installed through the groove 203, causing the piston rod body 3 to move in one direction. Simultaneously, the medium is discharged through the return oil port 103 on the other side, ensuring that the piston rod body 3 maintains synchronous output force and stroke. Changing the oil inlet direction achieves the desired motion. The piston rod body 3 moves in the opposite direction, thereby realizing the function of bidirectional drive and synchronous output. In addition, the secondary sealing ring 2011 inside the mounting groove 201 slides against the inner wall of the cylinder body 1 to provide sealing. At the same time, the end cover 1011 is threaded onto the surface of the connecting seat 101. With the help of the internal main sealing ring 1013, it fits against the end face of the connecting seat 101. The dustproof ring 1012 on the inner wall of the end cover 1011 is fitted onto the surface of the oil return port 103 to perform a second sealing, ensuring the overall sealing performance and guiding accuracy.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dual-outlet piston rod structure, comprising: Cylinder block (1); Two connecting seats (101) are disposed on the surfaces at both ends of the cylinder body (1) at symmetrical locations; characterized in that it further includes: Two grooves (104) are provided symmetrically on the inner wall of the cylinder body (1); A piston assembly, movably disposed inside the cylinder (1), includes: Two piston bodies (2) are slidably embedded in the inner wall of the cylinder (1), and the two piston bodies (2) reciprocate left and right inside the cylinder (1); Rod assembly; movably disposed inside the cylinder (1), the rod assembly includes: Two piston rod bodies (3) are slidably embedded in the inner wall of the cylinder (1), and the two piston rod bodies (3) reciprocate laterally inside the cylinder (1).

2. The dual-outlet piston rod structure according to claim 1, characterized in that: An oil inlet (102) is provided symmetrically on one side surface of the cylinder (1), and an oil return port (103) is provided on the center of the side surface of the cylinder (1) away from the oil inlet (102). End caps (1011) are threaded onto the outer surfaces of the two connecting seats (101).

3. The dual-outlet piston rod structure according to claim 2, characterized in that: The piston assembly further includes: multiple mounting grooves (201) formed on the surfaces of the two piston bodies (2), with a secondary sealing ring (2011) provided inside the multiple mounting grooves (201), and slide rods (202) provided symmetrically on the surfaces of the two piston bodies (2), with the multiple slide rods (202) sliding left and right and embedded in the interior of the slide groove (104), and slots (203) formed on the surfaces of the two piston bodies (2) on opposite sides.

4. The dual-outlet piston rod structure according to claim 3, characterized in that: The rod assembly further includes two mounting parts (301), which are respectively fixedly disposed on one end surface of the two piston rod bodies (3). The two mounting parts (301) are movably embedded in the inside of the slot (203), and positioning holes (302) are opened on the surface of the two mounting parts (301).

5. The dual-outlet piston rod structure according to claim 2, characterized in that: The inner walls of the two end caps (1011) are provided with dustproof rings (1012), and the two dustproof rings (1012) are movably fitted on the surface of the two piston rod bodies (3).

6. The dual-outlet piston rod structure according to claim 5, characterized in that: The inner walls of the two end caps (1011) are provided with main sealing rings (1013), and one side surface of the two main sealing rings (1013) is movably connected to the outer end surface of the connecting seat (101).

7. The dual-outlet piston rod structure according to claim 3, characterized in that: Springs (204) are fixedly provided on one side surface of the two piston bodies (2), and locating pins (2041) are fixedly provided on one end of the two springs (204).

8. A double-outlet piston rod structure according to claim 4, characterized in that: The two positioning holes (302) are movably fitted on the surface of the positioning pin (2041), and a connecting plate (303) is provided on one end surface of the two piston rod bodies (3).

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