Open split piston for truck-mounted crane sequential telescopic cylinder

Abstract

The utility model discloses a kind of open split piston for truck crane sequential telescopic cylinder in the field of piston, the piston inside is equipped with Gley ring for sealing, it is characterized in that, the end face of the piston installs flange, the flange is used to compress the Gley ring in the piston inside.The open split piston provided by the utility model is equipped with Gley ring for sealing in the piston inside, Gley ring is relatively large in hardness, the fixed position is passed through the flange of piston end face, the Gley ring is compressed in the piston inside by flange, avoid Gley ring to drop, when installing Gley ring, Gley ring is installed after flange is opened, guarantee the leakproofness of Gley ring, while, Gley ring is conveniently and quickly assembled and disassembled;The utility model provides that the piston is conveniently disassembled, simple structure, and wide applicability.

Description

Technical Field

[0001] This utility model relates to the field of telescopic cylinders, and in particular to an open split piston for a truck-mounted crane sequential telescopic cylinder. Background Technology

[0002] A Glyd ring is installed at the junction of the piston and the piston pipe. Because the piston pipe surface has several oil passage holes (as in patent application CN118309704A), the oil passage holes pass through the Glyd ring during the reciprocating motion of the cylinder, causing frictional contact. If the chamfering of the oil passage holes is not properly treated or if used for a long time, the inner ring of the Glyd ring will be damaged, leading to seal failure and internal leakage in the hydraulic cylinder. Therefore, the hardness of the Glyd ring has been increased to ensure that the hydraulic cylinder will not experience internal leakage during prolonged use. However, the increased hardness of the Glyd ring also increases the assembly difficulty, making it impossible to assemble using the compression seal method as before when the seal was softer. Utility Model Content

[0003] The purpose of this utility model is to provide an open split piston for a truck-mounted crane sequential telescopic cylinder, which is achieved by setting a flange on the piston to press a Glyd ring.

[0004] To solve the above technical problems, the following technical solution is adopted: This utility model provides an open split piston for a truck-mounted crane's sequential telescopic cylinder. The piston has a Glyd ring installed inside for sealing. The piston is characterized in that a flange is installed on its end face, and the flange is used to press the Glyd ring inside the piston.

[0005] Optionally, the flange is mounted on the end face of the piston by a number of screws.

[0006] Optionally, the flange has a plurality of through holes, and the piston end face has a plurality of screw holes. The screw holes are provided with threads that mate with screws. The plurality of screw holes and the plurality of through holes are aligned, and the flange is mounted on the piston end face through the screw holes, through holes and screws.

[0007] Optionally, a plurality of the through holes are arranged circumferentially around the central axis of the flange, and a plurality of the screw holes are arranged circumferentially around the central axis of the piston.

[0008] Optionally, the piston has a sealing groove inside for installing a Glyd ring.

[0009] Optionally, the piston has a flange groove on its end face for mounting the flange, and the flange groove communicates with the sealing groove.

[0010] Optionally, a boss is provided on one end face of the flange that contacts the piston. The boss mates with the flange groove, and the end face of the boss acts on the Glyd ring on the sealing groove.

[0011] Optionally, the flange is coaxially mounted with the piston, a through hole is provided at the center of the flange, and a mounting hole for installing a live oil pipe is provided at the center of the piston. The through hole is aligned with the through hole on the flange, and the live oil pipe passes through the through hole and the mounting hole in sequence.

[0012] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: The open split piston provided by this utility model has a Glyd ring installed inside the piston for sealing. The Glyd ring has a relatively high hardness and is fixed in position by a flange on the piston end face. The flange presses the Glyd ring tightly inside the piston to prevent it from falling off. When installing the Glyd ring, the flange is opened first, ensuring the sealing performance of the Glyd ring while making it easy and quick to install and remove. The piston provided by this utility model is easy to install and remove, has a simple structure, and is widely applicable. Attached Figure Description

[0013] Figure 1 This is a cross-sectional structural diagram of the flange installed on the piston end face in an embodiment of this utility model; Figure 2 This is a schematic diagram of the piston structure in an embodiment of this utility model; Figure 3 This is a schematic diagram of the piston end face structure in an embodiment of this utility model; Figure 4 This is a schematic diagram of the flange structure in an embodiment of this utility model; Figure 5 This is a schematic diagram of the flange side view structure in an embodiment of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Piston; 101. Flange groove; 102. Sealing groove; 103. Screw hole; 104. Mounting hole; 2. Flange; 201. Through hole; 202. Through hole; 203. Boss; 3. Glyd ring; 4. Screw; 5. Live oil pipe. Detailed Implementation

[0015] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use.

[0016] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., 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, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0017] Example 1

[0018] This embodiment provides an open split piston 1 for a truck-mounted crane sequential telescopic cylinder. The piston 1 is equipped with a Glyd ring 3 for sealing. The Glyd ring 3 has a large hardness. The piston 1 end face is pressed against the Glyd ring 3 by a mounting flange 2. When installing or removing the Glyd ring 3, the flange 2 is removed from the end face of the piston 1 and then the Glyd ring 3 is installed or removed.

[0019] like Figure 2 , Figure 3 , Figure 4 As shown, piston 1 has a flange groove 101, and flange 2 has a hole extending inward from the end face of piston 1 where flange 2 is mounted. A sealing groove 102 is provided inside piston 1, and a Glyd ring 3 is installed within the sealing groove 102. Flange 2 has a boss 203, which is installed within the flange groove 101. The flange groove 101 and sealing groove 102 are adjacent and interconnected. A boss 203 is provided on one end face of flange 2. After flange 2 is mounted on the end face of piston 1, the boss 203 engages with the flange groove 101, and the end of the boss 203 is in close contact with the Glyd ring 3 within the sealing groove 102. The boss 203 on flange 2 presses the Glyd ring 3 firmly within the sealing groove 102, fixing the position of the Glyd ring 3.

[0020] like Figure 1, Figure 3 , Figure 4 , Figure 5 As shown, a plurality of through holes 201 are provided on the flange 2, penetrating both ends of the flange 2. The plurality of through holes 201 are evenly spaced circumferentially around the central axis of the flange 2. In this embodiment, there are 12 through holes 201. A plurality of screw holes 103 are provided on the end face of the piston 1 mounting flange 2. The screw holes 103 are provided with threads that mate with screws 4. The plurality of screw holes 103 are evenly spaced circumferentially around the central axis of the piston 1. In this embodiment, there are 12 screw holes 103. The 12 through holes 201 and the 12 screw holes 103 are aligned, and the flange 2 is mounted on the end face of the piston 1 by 12 screws 4. On the flange 2, the through holes 201 are located on the outer ring of the boss 203. The boss 203 extends into the flange 2 hole on the piston 1, and the flange 2 body is mounted on the end face of the piston 1 by screws 4.

[0021] like Figure 1 , Figure 4 , Figure 5 As shown, a live oil pipe 5 is installed at the central axis of piston 1, a through hole 202 is opened at the center of flange 2, and an installation hole 104 is opened at the center of piston 1. The live oil pipe 5 passes through the through hole 202 on flange 2 and is installed in the installation hole 104 of piston 1. A Gladius ring 3 seals the gap between the live oil pipe 5 and flange 2. Several oil passage holes are opened on the live oil pipe 5. When piston 1 moves on live oil pipe 5, Gladius ring 3 contacts and rubs against the oil passage holes on the surface of live oil pipe 5. Gladius ring 3 has high hardness and low wear, so it will not affect the sealing effect of Gladius ring 3.

[0022] When installing the Glyd ring 3, remove the flange 2 from the end face of the piston 1, then insert the Glyd ring 3 into the sealing groove 102 from the end face of the piston 1, then extend the end of the flange 2 with the boss 203 into the flange groove 101, press the Glyd ring 3 into the sealing groove 102, and install the flange 2 on the end face of the piston 1 with screws 4 to complete the installation of the Glyd ring 3.

[0023] The open split piston 1 for the sequential telescopic cylinder of the truck crane provided in this embodiment uses a flange 2 to install the hard Glyd ring 3 inside the piston 1. The boss 203 on the flange 2 extends into the piston 1 to press the Glyd ring 3, restricting the position of the Glyd ring 3, ensuring sealing, and reducing the assembly difficulty of the Glyd ring 3.

[0024] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An open-type split piston for a truck-mounted crane's sequential telescopic cylinder, wherein a Glyd ring for sealing is installed inside the piston, characterized in that, A flange is mounted on the end face of the piston, and the flange is used to press the Glyd ring inside the piston.

2. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 1, characterized in that, The flange is mounted on the end face of the piston by a number of screws.

3. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 2, characterized in that, The flange has several through holes, and the piston has several screw holes on its end face. The screw holes are threaded to engage with screws. The screw holes and through holes are aligned. The flange is mounted on the piston end face through the screw holes, through holes, and screws.

4. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 3, characterized in that, A plurality of the through holes are arranged circumferentially around the central axis of the flange, and a plurality of the screw holes are arranged circumferentially around the central axis of the piston.

5. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 1, characterized in that, The piston has a sealing groove inside for installing a Glyd ring.

6. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 5, characterized in that, The piston has a flange groove on its end face for mounting the flange, and the flange groove is connected to the sealing groove.

7. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 6, characterized in that, A boss is provided on one end face of the flange that contacts the piston. The boss mates with the flange groove, and the end face of the boss acts on the Glyd ring on the sealing groove.

8. The open split piston for the sequential telescopic cylinder of a truck-mounted crane according to claim 1, characterized in that, The flange is coaxially mounted with the piston. A through hole is provided at the center of the flange, and a mounting hole for installing a live oil pipe is provided at the center of the piston. The through hole is aligned with the through hole on the flange, and the live oil pipe passes through the through hole and the mounting hole in sequence.

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