Sealing structure of hydraulic unclamping cylinder

Abstract

The utility model relates to the technical field of hydraulic unclamping cylinders, and discloses a sealing structure of a hydraulic unclamping cylinder, which comprises a cylinder main body and an output shaft, the output shaft is detachably arranged at the side part of the cylinder main body, the output shaft comprises a fixed shaft and a connecting shaft, a mounting groove is arranged in the cylinder main body, the fixed shaft is connected in the mounting groove, and the connecting shaft is connected in the mounting groove. The connecting shaft is installed on the side portion of the fixing shaft, a sealing assembly is arranged in the installing groove, the fixing shaft and the connecting shaft are arranged, the connecting shaft is connected to the end portion of the fixing shaft in a threaded mode, the limiting disc and the spring on the side portion of the limiting disc are pressed while the connecting shaft is pressed, and the bounce of the spring increases extrusion force. The clamping blocks and the clamping grooves are clamped in a sliding mode, and the reliability and safety of connection can be ensured through the sliding clamping design of the clamping blocks and the clamping grooves. Once clamped, accidental loosening or falling off can be effectively prevented, especially in the environment of frequent vibration or impact of equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic knife-beating cylinders, in particular to a sealing structure of a hydraulic knife-beating cylinder. Background Art

[0002] The hydraulic cutting cylinder is a common hydraulic actuator, which is commonly used in industrial and mechanical equipment. Its main function is to convert hydraulic energy into mechanical energy, thereby driving the movement or operation of related mechanical parts. The working principle of the hydraulic cutting cylinder is based on hydraulic mechanics. The pressure change of the liquid in the cylinder body generates thrust or pull force, thereby driving the piston to move. This design enables the hydraulic cutting cylinder to withstand high pressure and high power output, while having the advantages of smooth operation and precise control. The hydraulic cutting cylinder consists of a cylinder body, a piston, a seal, an inlet and outlet channel, and connecting pipes. The liquid is usually oil or water, and the pressure is provided by a pump station or a hydraulic system. When the liquid enters the cylinder body, the pressure drives the piston to move and perform the required work tasks, such as cutting, pressing, extrusion, etc. In industrial applications, hydraulic cutting cylinders are widely used in metal processing, aerospace, construction engineering, heavy machinery and other fields.

[0003] At present, in some industrial environments, equipment is often faced with vibration and impact loads, which may cause the output shaft connection to loosen or break, thereby affecting the stability and operation effect of the hydraulic cutting cylinder; therefore, it does not meet the existing needs, and we propose a sealing structure for the hydraulic cutting cylinder. Utility Model Content

[0004] The utility model provides a sealing structure of a hydraulic knife-beating cylinder, which has a sliding engagement design of an engagement block and a engagement groove to ensure the reliability and safety of the connection. Once engaged, it can effectively prevent accidental loosening or falling off, solving the problem mentioned in the above background technology that in some industrial environments, equipment is often exposed to vibration and impact loads, which may cause the output shaft connection to loosen or break, thereby affecting the stability and operation effect of the hydraulic knife-beating cylinder; therefore.

[0005] The utility model provides the following technical solution: a sealing structure of a hydraulic knife-beating cylinder, comprising a cylinder body and an output shaft, wherein the output shaft is detachably mounted on the side of the cylinder body, the output shaft comprises a fixed shaft and a connecting shaft, an installation groove is provided inside the cylinder body, the fixed shaft is connected inside the installation groove, the connecting shaft is mounted on the side of the fixed shaft, and a sealing assembly is provided inside the installation groove.

[0006] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, the sealing assembly includes a piston disc and a notch, the notch is connected and arranged at the end of the mounting groove, the piston disc is connected to the end of the fixed shaft, and the piston disc, the notch and the mounting groove are slidably matched.

[0007] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, wherein: a rotating groove is opened at the end of the connecting shaft, a fixing groove is opened at the end of the fixed shaft, and a rotating column is connected inside the fixing groove.

[0008] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, wherein: the rotating groove is set as a threaded groove, a threaded section is opened on the side of the rotating column, and the rotating groove and the rotating column are rotatably matched.

[0009] As an optional sealing structure scheme for a hydraulic knife-beating cylinder described in the utility model, a limit plate is sleeved on the outer side of the rotating column, a spring is sleeved on the outer side of the rotating column, one end of the spring is connected to the bottom of the limit plate, and the other end of the spring is connected to the side of the fixed groove.

[0010] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, wherein: the limit plate is slidably matched with the rotating column.

[0011] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, wherein: the end of the rotating column is connected to a cylinder, and the side of the cylinder is connected to a clamping block.

[0012] As an optional sealing structure of a hydraulic knife-beating cylinder described in the utility model, a clamping groove is provided on the side of the rotating groove, and the clamping block is rotatably engaged with the clamping groove.

[0013] The utility model has the following beneficial effects:

[0014] 1. The sealing structure of the hydraulic knife-beating cylinder is to thread the connecting shaft to the end of the fixed shaft through the setting of the fixed shaft and the connecting shaft. When pressing the connecting shaft, the limit plate and the spring on the side of the limit plate are pressed. The rebound force of the spring increases the extrusion force. When the threaded connection is completed, the engaging block and the slot are slidably engaged. The sliding engagement design of the engaging block and the slot can ensure the reliability and safety of the connection. Once engaged, it can effectively prevent accidental loosening or falling off, especially in the environment where the equipment is frequently vibrated or impacted. It solves the problem that in some industrial environments, the equipment is often faced with vibration and impact loads, which may cause the output shaft connection to loosen or break, thereby affecting the stability and operation effect of the hydraulic knife-beating cylinder.

[0015] 2. The sealing structure of the hydraulic knife-beating cylinder increases the stability of the motion trajectory through the setting of the piston disc, and the fixed shaft cooperates with the piston disc. The good cooperation between the piston disc and the fixed shaft can effectively reduce the vibration and impact caused by the operation of the hydraulic system. This is especially important for applications that require high-precision operation or have a relatively harsh working environment, which can improve the stability and long-term reliability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0017] Figure 2 It is a schematic diagram of the cutaway structure of the utility model.

[0018] Figure 3 It is a schematic diagram of the enlarged structure of point A of the utility model.

[0019] Figure 4 This is a schematic diagram of the fixed shaft structure of the utility model.

[0020] In the figure: 110, cylinder body; 120, output shaft; 121, fixed shaft; 122, connecting shaft; 130, mounting groove; 132, rotating groove; 133, fixed groove; 134, rotating column; 140, sealing assembly; 141, piston disk; 142, notch; 150, limit disk; 151, spring; 152, cylinder; 153, locking block; 154, locking groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1: This embodiment is intended to help solve the problem that in some industrial environments, equipment is often exposed to vibration and impact loads, which may cause the connection of the output shaft 120 to loosen or break, thereby affecting the stability and operation effect of the hydraulic knife cylinder. Figure 1-4 A sealing structure of a hydraulic knife-beating cylinder includes a cylinder body 110 and an output shaft 120. The output shaft 120 is detachably mounted on the side of the cylinder body 110. The output shaft 120 includes a fixed shaft 121 and a connecting shaft 122. An installation groove 130 is provided inside the cylinder body 110. The fixed shaft 121 is connected inside the installation groove 130. The connecting shaft 122 is mounted on the side of the fixed shaft 121. A sealing assembly 140 is provided inside the installation groove 130.

[0023] A rotating groove 132 is provided at the end of the connecting shaft 122, and a fixing groove 133 is provided at the end of the fixed shaft 121. A rotating column 134 is connected inside the fixing groove 133. The rotating groove 132 is set as a threaded groove. A threaded section is provided on the side of the rotating column 134. The rotating groove 132 and the rotating column 134 are rotatably matched. The number of thread layers of the rotating groove 132 and the rotating column 134 is set so that when the rotating groove 132 and the rotating column 134 are connected, the locking block 153 and the locking groove 154 can just lock together. The rotating column 134 is set as a cylinder 152 with a generally large diameter and a generally small diameter.

[0024] A limit plate 150 is sleeved on the outer side of the rotating column 134, and a spring 151 is sleeved on the outer side of the rotating column 134. One end of the spring 151 is connected to the bottom of the limit plate 150, and the other end of the spring 151 is connected to the side of the fixing groove 133. The limit plate 150 and the rotating column 134 are slidably matched; the limit plate 150 is sleeved on the outer side of a cylinder 152 with a small diameter.

[0025] The end of the rotating column 134 is connected to a cylinder 152 , the side of the cylinder 152 is connected to a clamping block 153 , the side of the rotating groove 132 is provided with a clamping slot 154 , and the clamping block 153 is rotatably clamped with the clamping slot 154 .

[0026] In this embodiment: by setting the fixed shaft 121 and the connecting shaft 122, the connecting shaft 122 is threadedly connected to the end of the fixed shaft 121, and while pressing the connecting shaft 122, the limit plate 150 and the spring 151 on the side of the limit plate 150 are pressed, and the rebound force of the spring 151 increases the extrusion force. When the threaded connection is completed, the engaging block 153 and the slot 154 are slidably engaged, and the sliding engagement design of the engaging block 153 and the slot 154 can ensure the reliability and safety of the connection. Once engaged, it can effectively prevent accidental loosening or falling off, especially in an environment where the equipment is frequently vibrated or impacted, solving the problem that in some industrial environments, the equipment is often faced with vibration and impact loads, which may cause the output shaft 120 connection to loosen or break, thereby affecting the stability and operation effect of the hydraulic knife cylinder.

[0027] Embodiment 2: This embodiment is intended to promote the solution to the problem of unstable cylinder motion trajectory. This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1-4 The sealing assembly 140 includes a piston disc 141 and a notch 142 . The notch 142 is connected to the end of the mounting groove 130 . The piston disc 141 is connected to the end of the fixed shaft 121 . The piston disc 141 and the notch 142 are slidably matched with the mounting groove 130 .

[0028] In this embodiment, by setting the piston plate 141, the fixed shaft 121 cooperates with the piston plate 141, and when the knife cylinder moves, the stability of the motion trajectory is increased. The good cooperation between the piston plate 141 and the fixed shaft 121 can effectively reduce the vibration and impact caused by the operation of the hydraulic system. This is particularly important for applications that require high-precision operation or have a relatively harsh working environment, and can improve the stability and long-term reliability of the equipment.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] 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 technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A sealing structure of a hydraulic knife-beating cylinder, comprising a cylinder body (110) and an output shaft (120), wherein the output shaft (120) is detachably mounted on a side of the cylinder body (110), characterized in that: The output shaft (120) comprises a fixed shaft (121) and a connecting shaft (122); a mounting groove (130) is provided inside the cylinder body (110); the fixed shaft (121) is connected inside the mounting groove (130); the connecting shaft (122) is installed on the side of the fixed shaft (121); and a sealing assembly (140) is provided inside the mounting groove (130).

2. The sealing structure of a hydraulic knife-beating cylinder according to claim 1, characterized in that: The sealing assembly (140) comprises a piston disc (141) and a notch (142); the notch (142) is arranged in communication with the end of the mounting groove (130); the piston disc (141) is connected to the end of the fixed shaft (121); the piston disc (141) and the notch (142) are slidably matched with the mounting groove (130).

3. The sealing structure of a hydraulic knife-beating cylinder according to claim 2, characterized in that: The end of the connecting shaft (122) is provided with a rotation groove (132), the end of the fixed shaft (121) is provided with a fixing groove (133), and a rotation column (134) is connected inside the fixing groove (133).

4. The sealing structure of a hydraulic knife-beating cylinder according to claim 3 is characterized in that: The rotation groove (132) is configured as a thread groove, a thread section is provided on the side of the rotation column (134), and the rotation groove (132) and the rotation column (134) are rotationally matched.

5. The sealing structure of a hydraulic knife-beating cylinder according to claim 4, characterized in that: A limiting plate (150) is sleeved on the outer side of the rotating column (134), and a spring (151) is sleeved on the outer side of the rotating column (134), one end of the spring (151) is connected to the bottom of the limiting plate (150), and the other end of the spring (151) is connected to the side of the fixing groove (133).

6. The sealing structure of a hydraulic knife-beating cylinder according to claim 5, characterized in that: The limiting plate (150) is slidably matched with the rotating column (134).

7. The sealing structure of a hydraulic knife-beating cylinder according to claim 6, characterized in that: The end of the rotating column (134) is connected to a cylinder (152), and the side of the cylinder (152) is connected to a locking block (153).

8. The sealing structure of a hydraulic knife-beating cylinder according to claim 7, characterized in that: A clamping groove (154) is provided on the side of the rotating groove (132), and the clamping block (153) is rotatably clamped with the clamping groove (154).

Images