Inner sub-cylinder structure of oil cylinder

Abstract

The invention discloses a secondary cylinder structure in an oil cylinder, and relates to the field of oil cylinders, the secondary cylinder structure comprises a cylinder body, the interior of the cylinder body is divided into two cavities through a partition plate fixed in the cylinder body, the two cavities are divided into a secondary cavity and a primary cavity from top to bottom, and the execution rod penetrates through the partition plate and is arranged in the cylinder body; a trigger part is arranged on the outer wall of the cylinder body, opening and closing parts are arranged at two input ports of the cylinder body, and a limiting device is arranged at the bottom of a circular plate at the top of the execution rod; the limiting device comprises a limiting component fixed to the bottom of a circular plate on the top of the execution rod and a buckle component fixed to the top of the outer wall of the cylinder body sub-cavity. The oil cylinder is divided into the secondary cylinder and the primary cylinder through the arranged partition plate, oil is conveyed to the internal structure of the secondary cylinder through the oil conveying mechanism to accelerate lifting of the executing end of the oil cylinder, then oil is conveyed to the primary cylinder, the optimal effect of the oil cylinder is achieved, and the working efficiency of the oil cylinder is improved.

Description

Technical Field

[0001] The invention mainly relates to the technical field of oil cylinders, and in particular to a sub-cylinder structure in an oil cylinder. Background Art

[0002] The oil cylinder is actually a hydraulic cylinder. The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has a simple structure and reliable operation. When using it to achieve reciprocating motion, the deceleration device can be eliminated, and there is no transmission gap, and the movement is smooth. Therefore, it is widely used in the hydraulic systems of various machines. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder head, a piston and a piston rod, a sealing device, a buffer device and an exhaust device. The buffer device and the exhaust device depend on the specific application, and other devices are indispensable.

[0003] According to a quick oil cylinder provided by the patent document with application number CN201910931959.X, it can be known that the device includes a cylinder body, an upper end cover arranged at the upper end of the cylinder body, and a lower end cover arranged at the lower end of the cylinder body; a piston body is slidably connected in the cylinder body, and a piston rod is provided on the piston body; an upper control chamber is formed between the piston body and the upper end cover, and a lower control chamber is formed between the piston body and the lower end cover; a first oil port connected to the lower control chamber and a second oil port connected to the upper control chamber are provided on the cylinder body; a downward sliding hole is provided in the lower end cover in the vertical direction, and a control rod is slidably connected in the downward sliding hole, a convex rod is provided at the upper end of the control rod, and a locking hole for the convex rod to be inserted is provided in the piston body; a locking assembly is provided in the piston body; and a positioning assembly is also provided in the lower end cover.

[0004] The product in the above patent has a simple structure and double oil ports, does not need to be replenished with oil, and controls the operation of the oil cylinder by pressure. When the oil cylinder is rising and falling, a large amount of oil needs to be put into the cylinder, and this process is relatively slow. Summary of the invention

[0005] Based on this, the purpose of the present invention is to provide a sub-cylinder structure in an oil cylinder to solve the technical problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a sub-cylinder structure in an oil cylinder, comprising a cylinder body, wherein the cylinder body is divided into two chambers by a partition plate fixed inside the cylinder body, which are divided into a sub-chamber and a main chamber from top to bottom, and an actuator rod is arranged inside the cylinder body and penetrates the partition plate; The outer wall of the cylinder body is provided with a trigger component, the two input ports of the cylinder body are provided with opening and closing components, and the bottom of the circular plate at the top of the actuator rod is provided with a limit device; The limiting device comprises a limiting component fixed at the bottom of the circular plate at the top of the actuator rod and a buckle component fixed at the top of the outer wall of the cylinder sub-cavity.

[0007] Preferably, an oil delivery channel is embedded inside the actuator rod, and the oil delivery channel supplies oil to the sub-chamber and the main chamber of the cylinder body respectively through two branch channels. The input port of the oil delivery channel is connected to the first oil delivery mechanism through a pipeline. In this preferred embodiment, the actuator rod inputs the hydraulic oil from the oil delivery channel through the two branch channels into the sub-chamber and the main chamber of the tank body through the external first oil delivery mechanism, so as to facilitate the subsequent rapid descent of the actuator rod.

[0008] Preferably, two sealing plates are respectively arranged in the cylinder sub-cavity and the main cavity and fixed on the outer wall of the actuator rod, the top round edges of the two sealing plates are arc-shaped, and the bottoms of the two sealing plates are embedded with wedge-shaped grooves. In this preferred embodiment, the wedge-shaped grooves and arc-shaped structures on the sealing plates are for facilitating the discharge of the internal hydraulic oil from the input port.

[0009] Preferably, the trigger component includes a trigger respectively arranged on the outer wall of the cylinder body and connected to the sub-cavity and the main cavity through a connecting groove, and the trigger is electrically connected to the PLC controller. In this preferred embodiment, the trigger can send an electrical signal to the PLC controller when the hydraulic oil touches the contacts in the trigger cavity, and the PLC controller controls the next operation of the equipment.

[0010] Preferably, the opening and closing component includes a solenoid valve provided at the two input ports of the cylinder body, and the two input ports of the cylinder body are externally connected to a second oil delivery mechanism through pipelines. In this preferred embodiment, the solenoid valve can be opened and closed before and after oil delivery, and the solenoid valve is opened or closed by the equipment at an appropriate time.

[0011] Preferably, the limiting component includes three limiting frames fixedly connected in a circular array to the bottom of the circular plate at the top of the actuator rod, the inner wall of the limiting frame is movably connected with a support rod, and the support rod is embedded with a plurality of slots in a linear array near the side wall of the cylinder body. In this preferred embodiment, the support rod can support the actuator rod when the mother cavity is not filled with hydraulic oil through the cooperation of the snap-fit ​​component.

[0012] Preferably, the snap-fit ​​component includes three fixed supports fixed in a circular array on the top of the outer wall of the cylinder sub-cavity, the inner side walls of the three fixed supports are movably connected to a block, the side walls of the three fixed supports are provided with a limiting assembly, the execution end of the limiting assembly is engaged with a rectangular groove on one side of the block, the block is engaged with the groove, the bottom of the engaging part of the block is wedge-shaped, and the movable part of the block is connected to the three fixed supports through a rebound assembly. In this preferred embodiment, the snap-fit ​​component can engage the support rod and fix the execution rod.

[0013] Preferably, the limiting assembly includes an electric telescopic rod fixed on a rectangular plate connecting the three side walls of the fixed supports, and the executing end of the electric telescopic rod is provided with a rectangular clamping block, and the rectangular clamping block is clamped into a rectangular groove on one side of the clamping block. In this preferred embodiment, the electric telescopic rod can clamp the main fixed support to prevent the fixed support from fixing the support rod, and the executing rod cannot return to its original position.

[0014] Preferably, the rebound assembly includes three springs arranged at the movable part of the block, and the movable part of the block is connected to the three fixed supports through the three springs. In this preferred embodiment, the rebound component can rebound the block when the support rod returns to its original position, thereby fixing the support rod for the next time.

[0015] Preferably, a plurality of contacts are provided in a circular array on the inner bottom wall of the cylinder body mother cavity and the top of the partition. In this preferred embodiment, the contacts inside the cylinder body and the partition can send signals to the PLC controller, so that the PLC controller can perform the next operation.

[0016] In summary, the present invention mainly has the following beneficial effects: The actuator rod inputs the hydraulic oil from the oil delivery channel through two branch channels into the sub-cavity and main cavity of the tank body through the external first oil delivery mechanism, so as to facilitate the rapid descent of the actuator rod afterwards. The wedge-shaped groove and arc-shaped structure on the sealing plate are for the hydraulic oil to be discharged from the input port. The trigger can send an electrical signal to the PLC controller when the hydraulic oil touches the contacts in the trigger cavity, and the PLC controller controls the next operation of the equipment. The solenoid valve can be opened and closed before and after the oil delivery, and the equipment opens or closes the solenoid valve at an appropriate time. The support rod can support the actuator rod when the main cavity is not full of hydraulic oil through the cooperation of the snap-fit ​​component. The electric telescopic rod can block the main fixed support to prevent the fixed support from fixing the support rod, and the actuator rod cannot return to its original position. The rebound component can bounce the block back when the support rod returns to its original position, and fix the support rod for the next time. The contacts inside the cylinder body and the partition can send signals to the PLC controller, so that the PLC controller can perform the next operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is an axial view of the present invention; Figure 2 is a bottom axial view of the present invention; Figure 3 is an isometric cross-sectional view of the present invention; Figure 4 is a side sectional view of the present invention; Figure 5 An exploded view of the present invention; Figure 6An exploded view of the buckle component of the present invention; Figure 7 It is a schematic diagram of the enlarged structure of point A of the present invention.

[0018] Description of the drawings: 10. Cylinder body; 11. Partition; 12. Actuator rod; 121. Oil delivery channel; 122. Sealing plate; 123. Wedge groove; 13. Trigger component; 131. Trigger; 14. Opening and closing component; 141. Solenoid valve; 20. Limiting device; 21. Limiting component; 211. Limiting frame; 212. Support rod; 213. Slot; 22. Buckle component; 221. Fixed support; 222. Block; 223. Limiting assembly; 2231. Electric telescopic rod; 2232. Rectangular block; 224. Rebound assembly; 2241. Spring. DETAILED DESCRIPTION

[0019] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0020] The following describes an embodiment of the present invention based on its overall structure. Example

[0021] Please refer to the attached Figure 1 , 3 As shown in Figures 5 and 6, in a preferred embodiment of the present invention, a sub-cylinder structure in an oil cylinder includes a cylinder body 10, and the cylinder body 10 is divided into two chambers by a partition 11 fixed inside the cylinder body 10, which are divided into a sub-chamber and a main chamber from top to bottom, and an actuator rod 12 passes through the partition 11 and is arranged inside the cylinder body 10. An oil delivery channel 121 is embedded in the actuator rod 12, and the oil delivery channel 121 supplies oil to the sub-chamber and the main chamber of the cylinder body 10 respectively through two branch channels. The input port of the oil delivery channel 121 is connected to the first oil delivery mechanism through a pipeline, and two sealing plates 122 are respectively arranged in the sub-chamber and the main chamber of the cylinder body 10 and fixed on the outer wall of the actuator rod 12, the top round edges of the two sealing plates 122 are arc-shaped, and the bottoms of the two sealing plates 122 are embedded with wedge-shaped grooves 123, and the inner bottom wall of the main chamber of the cylinder body 10 and the top circumferential array of the partition 11 are provided with multiple contacts.

[0022] It should be noted that in this embodiment, when the hydraulic cylinder needs to be used, the staff places the carrier on the circular plate at the top of the actuator rod 12, and then the second oil delivery mechanism draws the hydraulic oil from the pipeline through the oil pump and then enters the bottom of the sealing plate 122 from the wedge-shaped groove 123 at the bottom of the sealing plate 122 and then enters the sub-cavity and main cavity of the cylinder body 10.

[0023] Please refer to the attached Figure 1 , 2As shown in Figures 4 and 5, in a preferred embodiment of the present invention, a trigger component 13 is provided on the outer wall of the cylinder body 10, an opening and closing component 14 is provided at two input ports of the cylinder body 10, a limit device 20 is provided at the bottom of the top circular plate of the actuator rod 12, the trigger component 13 includes triggers 131 respectively provided on the outer wall of the cylinder body 10 and connecting the sub-cavity and the mother cavity through a connecting groove, the trigger 131 is electrically connected to the PLC controller, the opening and closing component 14 includes a solenoid valve 141 provided at the two input ports of the cylinder body 10, and the two input ports of the cylinder body 10 are externally connected to a second oil delivery mechanism through a pipeline.

[0024] It should be noted that, in this embodiment, the solenoid valve 141 is in an open state at this time. Since the space of the sub-chamber is small, the sub-chamber will first push out the actuator rod 12. After the actuator rod 12 is pushed out, it stops when the height reaches the specified height. At the same time, when the actuator rod 12 rises, the circular plate drives the support rod 212 at the bottom to rise together inside the limit frame 211.

[0025] Please refer to the attached Figure 1 , 5 As shown in Figures 6 and 7, in a preferred embodiment of the present invention, the limiting device 20 includes a limiting component 21 fixed to the bottom of the top circular plate of the actuator rod 12, and a buckle component 22 fixed to the top of the outer wall of the sub-cavity of the cylinder body 10. The limiting component 21 includes three limiting frames 211 fixedly connected to the bottom of the top circular plate of the actuator rod 12 in a circumferential array, and the inner side wall of the limiting frame 211 is movably connected with a support rod 212. The support rod 212 is embedded with a plurality of slots 213 in a linear array near the side wall of the cylinder body 10. The buckle component 22 includes three fixed supports 221 fixed to the top of the outer wall of the sub-cavity of the cylinder body 10 in a circumferential array, and the inner side walls of the three fixed supports 221 are movably connected to the card blocks 222. The side walls of the three fixed supports 221 are provided with limiting groups. Part 223, the execution end of the limiting component 223 is engaged with the rectangular groove on one side of the card block 222, the card block 222 is engaged with the card slot 213, the bottom of the engaging part of the card block 222 is wedge-shaped, the movable part of the card block 222 is connected to the three fixed supports 221 through the rebound component 224, the limiting component 223 includes an electric telescopic rod 2231 fixed on the rectangular plate of the side wall connecting the three fixed supports 221, the execution end of the electric telescopic rod 2231 is provided with a rectangular card block 2232, the rectangular card block 2232 is engaged with the rectangular groove on one side of the card block 222, the rebound component 224 includes three springs 2241 provided at the movable part of the card block 222, and the movable part of the card block 222 is connected to the three fixed supports 221 through the three springs 2241.

[0026] It should be noted that, in the present embodiment, when the support rod 212 rises, because the bottom of the block 222 is in a wedge shape, when the support rod 212 rises, the slot 213 generates a pushing force on the block 222, and the block 222 is restored to its original position by the rebound of the spring 2241 until the support rod 212 stops rising, and the bottom of the block 222 is restricted by the fixed support 221, and then the block 222 is stuck in the slot 213 to temporarily support the support rod 212. When the hydraulic oil at the bottom of the mother cavity is delivered to the specified position, the oil delivery is stopped. At this time, the mother cavity and the sub-cavity deliver a little hydraulic oil to raise the actuator rod 12 a short distance, and the block 222 is lifted up through the slot 213. Then the first oil delivery mechanism inputs the hydraulic oil from the oil delivery channel 121 inside the actuator rod 12, and then inputs the hydraulic oil from the two forks into the sub-cavity and the mother cavity respectively. At this time, there is hydraulic pressure at the top and bottom of the sealing plate 122. Oil is collected to keep it in the specified position. After the hydraulic oil at the top is full, it contacts the trigger 131. The trigger 131 sends an electrical signal to the PLC controller, and the PLC controller starts the electric telescopic rod 2231. The electric telescopic rod 2231 drives the rectangular block 2232 to penetrate into the rectangular groove on one side of the block 222 to fix the position of the block 222. At this time, the block 222 no longer restricts the movement of the support rod 212. When it is necessary to restore the actuator rod 12 to its original position, the first oil delivery mechanism continues to input hydraulic oil to accelerate the descending speed of the actuator rod 12. At this time, the second oil delivery mechanism draws out the hydraulic oil in the mother cavity and the child cavity. When the two sealing plates 122 contact the contact point, the first oil delivery mechanism stops delivering oil, and the hydraulic oil on the top of the sealing plate 122 is hydraulically extracted from the arc-shaped mouth by the second oil delivery mechanism until all the hydraulic oil is extracted. The above operation has the effect of allowing the actuator rod 12 to rise and fall quickly, thereby improving the working efficiency of the cylinder.

[0027] The working principle of the present invention is: The electrical components in the present invention are all triggered to operate by a PLC controller.

[0028] When the hydraulic cylinder needs to be used, the staff puts the carrier on the circular plate at the top of the actuator rod 12, and then the second oil delivery mechanism draws the hydraulic oil from the pipeline through the oil pump, and then enters the bottom of the sealing plate 122 from the wedge-shaped groove 123 at the bottom of the sealing plate 122, and then enters the sub-cavity and main cavity of the cylinder body 10. At this time, the solenoid valve 141 is in an open state. Because the space in the sub-cavity is small, the sub-cavity will first push out the actuator rod 12. After the actuator rod 12 is pushed out, it stops when the height reaches the specified height. At the same time, when the actuator rod 12 rises, the circular plate drives the bottom support rod 212 to rise together inside the limit frame 211 When the support rod 212 rises, because the bottom of the block 222 is in a wedge shape, when the support rod 212 rises, the slot 213 generates a pushing force on the block 222, and the block 222 is restored to its original position by the rebound of the spring 2241 until the support rod 212 stops rising. The bottom of the block 222 is restricted by the fixed support 221, and then the block 222 is stuck in the slot 213 to temporarily support the support rod 212. When the hydraulic oil at the bottom of the mother cavity is delivered to the specified position, the oil delivery is stopped. At this time, the mother cavity and the sub-cavity deliver a little hydraulic oil to move the actuator rod 12 upward. The actuator 12 is lifted up a short distance, and the block 222 is lifted up through the card slot 213. Then the first oil delivery mechanism inputs the hydraulic oil from the oil delivery channel 121 inside the actuator rod 12, and then inputs the hydraulic oil from the two forks into the sub-chamber and the mother chamber respectively. At this time, there is hydraulic oil at the top and bottom of the sealing plate 122 to keep it in the specified position. After the hydraulic oil at the top is full, it contacts the trigger 131. The trigger 131 sends an electrical signal to the PLC controller. The PLC controller starts the electric telescopic rod 2231. The electric telescopic rod 2231 drives the rectangular block 2232 to go deep into the rectangular groove on one side of the block 222. The position of the block 222 is fixed. At this time, the block 222 no longer restricts the movement of the support rod 212. When the actuator rod 12 needs to be restored to its original position, the first oil delivery mechanism continues to input hydraulic oil to accelerate the descending speed of the actuator rod 12. At this time, the second oil delivery mechanism extracts the hydraulic oil in the mother chamber and the sub-chamber. When the two sealing plates 122 touch the contact point, the first oil delivery mechanism stops delivering oil, and the hydraulic oil on the top of the sealing plate 122 is hydraulically extracted from the arc-shaped mouth by the second oil delivery mechanism until all the hydraulic oil is extracted. The above operation allows the actuator rod 12 to rise and fall quickly, thereby improving the working efficiency of the cylinder.

[0029] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A sub-cylinder structure in an oil cylinder, characterized in that: The cylinder body (10) comprises a cylinder body (10), wherein the cylinder body (10) is divided into two chambers via a partition (11) fixed inside the cylinder body (10), which are divided into a sub-chamber and a main chamber from top to bottom, and an actuator rod (12) which penetrates the partition (11) and is arranged inside the cylinder body (10); The outer wall of the cylinder body (10) is provided with a trigger component (13), the two input ports of the cylinder body (10) are provided with opening and closing components (14), and the bottom of the top circular plate of the actuator rod (12) is provided with a limit device (20); The limiting device (20) comprises a limiting component (21) fixed to the bottom of the top circular plate of the actuator rod (12), and a buckle component (22) fixed to the top of the outer wall of the sub-cavity of the cylinder body (10).

2. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: An oil delivery channel (121) is embedded inside the actuator rod (12), and the oil delivery channel (121) supplies oil to the sub-chamber and the main chamber of the cylinder body (10) respectively through two branch channels, and the input port of the oil delivery channel (121) is externally connected to a first oil delivery mechanism through a pipeline.

3. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: Two sealing plates (122) are respectively arranged in the sub-cavity and the main cavity of the cylinder body (10) and fixed to the outer wall of the actuator rod (12); the top round edges of the two sealing plates (122) are in an arc shape, and the bottoms of the two sealing plates (122) are embedded with wedge-shaped grooves (123).

4. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: The trigger component (13) comprises a trigger (131) which is respectively arranged on the outer wall of the cylinder body (10) and connected to the sub-cavity and the main cavity via a connecting groove, and the trigger (131) is electrically connected to a PLC controller.

5. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: The opening and closing component (14) comprises a solenoid valve (141) provided at two input ports of the cylinder body (10), and the two input ports of the cylinder body (10) are externally connected to a second oil delivery mechanism via pipelines.

6. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: The limiting component (21) comprises three limiting frames (211) fixedly connected in a circumferential array to the bottom of the circular plate at the top of the actuator rod (12); the inner side wall of the limiting frame (211) is movably connected to a support rod (212); and the support rod (212) is embedded with a plurality of slots (213) in a linear array near the side wall of the cylinder body (10).

7. The sub-cylinder structure in a cylinder according to claim 6, characterized in that: The buckle component (22) comprises three fixed supports (221) fixed in a circumferential array on the top of the outer wall of the sub-cavity of the cylinder body (10); the inner side walls of the three fixed supports (221) are movably connected to the clamping blocks (222); the side walls of the three fixed supports (221) are provided with limiting components (223); the execution end of the limiting component (223) is clamped to a rectangular groove on one side of the clamping block (222); the clamping block (222) is clamped to the clamping groove (213); the bottom of the clamping part of the clamping block (222) is wedge-shaped; and the movable part of the clamping block (222) is connected to the three fixed supports (221) via a rebound component (224).

8. The sub-cylinder structure in a cylinder according to claim 7, characterized in that: The limiting assembly (223) comprises an electric telescopic rod (2231) fixed on a rectangular plate connecting the side walls of the three fixed supports (221); an execution end of the electric telescopic rod (2231) is provided with a rectangular clamping block (2232); the rectangular clamping block (2232) is clamped into a rectangular groove on one side of the clamping block (222).

9. The sub-cylinder structure in a cylinder according to claim 7, characterized in that: The rebound component (224) comprises three springs (2241) arranged at the movable part of the clamping block (222), and the movable part of the clamping block (222) is connected to the three fixed supports (221) via the three springs (2241).

10. The sub-cylinder structure in a cylinder according to claim 1, characterized in that: A plurality of contact points are arranged in a circumferential array on the inner bottom wall of the mother cavity of the cylinder body (10) and on the top of the partition plate (11).

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