Hydraulic oil cylinder with buffering and current limiting capabilities

Abstract

The hydraulic oil cylinder with the buffering and flow limiting capacity comprises an oil cylinder body, a buffering and flow limiting mechanism is arranged in the oil cylinder body, the oil cylinder body comprises a hydraulic rod, a piston and an oil inlet pipe, the end, arranged in the oil cylinder body, of the hydraulic rod is fixedly connected with the piston, the oil cylinder body is fixedly connected with an oil outlet pipe, and a ball valve is installed in the oil outlet pipe; the outer wall of the oil outlet pipe is fixedly connected with an annular block, the side wall of the annular block is fixedly connected with a sealing gasket, the oil outlet pipe is sleeved with a mounting pipe attached to the sealing gasket, the outer wall of the mounting pipe is fixedly connected with symmetrically-distributed connecting blocks, the side wall of the annular block is fixedly connected with symmetrically-distributed guide rods, and the guide rods movably penetrate through the connecting blocks. U-shaped blocks which are symmetrically distributed are fixedly connected to the outer wall of the mounting pipe, and connecting rods which are symmetrically distributed are fixedly connected to the outer wall of the annular block; the mounting and fixing effect of the mounting pipe can be guaranteed, the mounting pipe is prevented from falling off from the oil outlet pipe, and the safety during use is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, and particularly to a hydraulic cylinder with buffer current limiting ability. Background Technique

[0002] A 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 used to achieve reciprocating motion, it can eliminate the need for a speed reduction device and has no transmission gap, ensuring smooth motion.

[0003] After retrieval, a Chinese patent with the publication number "CN220435171U" discloses a hydraulic cylinder with buffer current limiting ability, belonging to the technical field of hydraulic cylinders. The utility model includes a cylinder body and an oil outlet pipe installed on one side of the cylinder body, and also includes a buffer current limiting mechanism and an installation mechanism; the buffer current limiting mechanism includes an installation ring installed on the inner wall of the oil outlet pipe, one side of the installation ring is fixedly connected with a plurality of telescopic sleeves, a telescopic spring is fixedly connected inside the telescopic sleeve, one end of the telescopic spring is connected with an L-shaped rod, and the L-shaped rod slides and extends outside the telescopic sleeve. Through the action of the buffer current limiting mechanism, when the hydraulic oil pressure inside the cylinder body is too high, the installation circular plate is used to block the installation ring, avoiding the outflow of hydraulic oil, correspondingly reducing the impact of hydraulic oil on the external oil outlet pipeline, reducing the wear of the oil outlet pipeline of the cylinder body, and thus improving the working efficiency of the oil discharge of the cylinder body. However, the existing technology has the following deficiencies in use:

[0004] According to the setting that the installed magnet and the fixed magnet attract each other with opposite poles, the sliding plug rod is inserted into the jack to install and fix the oil outlet pipe and the installation pipe. Although this method realizes the installation and fixation of the installation pipe, when the hydraulic cylinder works and the hydraulic oil flows through the oil outlet pipe, it will generate a large impact force on it, which may cause the installation pipe to break away from the oil outlet pipe, having a certain potential safety hazard.

[0005] Therefore, there is an urgent need for a hydraulic cylinder with buffer current limiting ability to solve the above problems. Content of the Utility Model

[0006] The purpose of the present utility model is to address the problem that, based on the setting that the installed magnet and the fixed magnet attract each other with opposite poles, the sliding plug rod is inserted into the jack to install and fix the oil outlet pipe and the installation pipe. Although this method realizes the installation and fixation of the installation pipe, when the hydraulic cylinder works and the hydraulic oil flows through the oil outlet pipe, it will generate a large impact force on it, which may cause the installation pipe to break away from the oil outlet pipe, having a certain potential safety hazard.

[0007] To achieve the above-mentioned invention purpose, the present utility model provides the following technical solutions:

[0008] A hydraulic cylinder with buffer current-limiting ability is provided to improve the above problems.

[0009] Specifically, the present application is as follows:

[0010] A hydraulic cylinder with buffer current-limiting ability includes a cylinder body. A buffer current-limiting mechanism is arranged inside the cylinder body. The cylinder body includes a hydraulic rod, a piston, and an oil inlet pipe. One end of the hydraulic rod placed inside the cylinder body is fixedly connected to the piston. An oil outlet pipe is fixedly connected to the cylinder body. A ball valve is installed inside the oil outlet pipe. An annular block is fixedly connected to the outer wall of the oil outlet pipe. A sealing gasket is fixedly connected to the side wall of the annular block. An installation pipe that fits with the sealing gasket is sleeved outside the oil outlet pipe. Symmetrically distributed connecting blocks are fixedly connected to the outer wall of the installation pipe. Symmetrically distributed guide rods are fixedly connected to the side wall of the annular block. The guide rods movably penetrate through the connecting blocks. Symmetrically distributed U-shaped blocks are fixedly connected to the outer wall of the installation pipe. Symmetrically distributed connecting rods are fixedly connected to the outer wall of the annular block. A clamping plate is rotatably connected to the connecting rod. A top block that abuts against the U-shaped block is fixedly connected to the end of the clamping plate away from the connecting rod. A bolt for fixedly connecting the U-shaped block and the clamping plate is threadedly connected to the U-shaped block. A butterfly nut is installed at the end of the bolt.

[0011] As a preferred technical solution of the present application, the buffer current-limiting mechanism includes a circular plate slidably placed inside the cylinder body. Symmetrically distributed sleeves are fixedly connected inside the cylinder body. A spring is fixedly connected inside the sleeve. A fixed rod is slidably connected inside the sleeve. One end of the fixed rod away from the sleeve is fixedly connected to the circular plate.

[0012] As a preferred technical solution of the present application, the end of the spring is fixedly connected to the fixed rod.

[0013] As a preferred technical solution of the present application, the oil inlet pipe is fixedly connected to the cylinder body, and the piston is slidably placed inside the cylinder body.

[0014] As a preferred technical solution of the present application, symmetrically distributed limit blocks are fixedly sleeved on the connecting rod, and the limit blocks are in contact with the clamping plate.

[0015] As a preferred technical solution of the present application, the guide rod penetrates through the sealing gasket.

[0016] As a preferred technical solution of the present application, the inner wall of the installation pipe fits with the outer wall of the oil outlet pipe.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] In the solution of the present application:

[0019] By means of the provided connecting block, guide rod, U-shaped block, connecting rod, clamping plate, top block, bolt and wing nut, when it is necessary to install and fix the installation pipe, the installation pipe is sleeved on the oil outlet pipe, the guide rod penetrates through the connecting block, then the clamping plate is rotated to the horizontal position and clamped on the U-shaped block. By applying a certain pressure to the clamping plate, the top block abuts against the U-shaped block, and then the bolt is rotated through the wing nut to fix the U-shaped block and the clamping plate, completing the installation and fixation of the installation pipe, ensuring the fixation effect of the installation pipe. When installing the installation pipe, it is not necessary to continuously apply pressure in the direction of the oil cylinder body to assist the installation. After the installation pipe is fixed, its end is always in contact with the sealing gasket, ensuring the sealing between the oil outlet pipe and the installation pipe, solving the problem in the prior art that according to the opposite-pole attraction setting of the installation magnet and the fixed magnet, the sliding plug rod is inserted into the inside of the jack to install and fix the oil outlet pipe and the installation pipe. Although this method realizes the installation and fixation of the installation pipe, when the hydraulic oil cylinder works and the hydraulic oil flows through the oil outlet pipe, it will generate a large impact force on it, which may cause the installation pipe to break away from the oil outlet pipe, having a certain potential safety hazard. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. 1 is a schematic diagram of the overall structure of a hydraulic oil cylinder with buffering and flow-limiting capabilities provided by the present application.

[0021] Figure 2 FIG. Figure 1 is an enlarged schematic diagram of part A in FIG. 1.

[0022] Figure 3 FIG. 2 is a front view schematic diagram of a hydraulic oil cylinder with buffering and flow-limiting capabilities provided by the present application.

[0023] Figure 4 FIG. Figure 3 is an enlarged schematic diagram of part B in FIG. 2.

[0024] Figure 5 FIG. 3 is a sectional view schematic diagram of a hydraulic oil cylinder with buffering and flow-limiting capabilities provided by the present application.

[0025] Reference numerals in the figures:

[0026] 1. Oil cylinder body; 2. Oil outlet pipe; 3. Annular block; 4. Sealing gasket; 5. Installation pipe; 6. Connecting block; 7. Guide rod; 8. U-shaped block; 9. Connecting rod; 10. Clamping plate; 11. Top block; 12. Bolt; 13. Wing nut; 14. Circular plate; 15. Sleeve; 16. Spring; 17. Fixed rod; 18. Hydraulic rod; 19. Limiting block; 20. Piston; 21. Inlet pipe; 22. Ball valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are only a part rather than all of the embodiments of the present utility model.

[0028] Therefore, the following detailed description of the embodiments of the present utility model is not intended to limit the scope of the claimed present utility model, but merely represents some embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0029] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments may be combined with each other.

[0030] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0031] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship when the inventive product is normally placed, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model. In addition, terms such as "first", "second", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0032] Embodiment:

[0033] Such as Figures 1-5As shown in the figure, a hydraulic cylinder with buffering and current-limiting capabilities proposed in this embodiment includes a cylinder body 1. A buffering and current-limiting mechanism is provided inside the cylinder body 1. The cylinder body 1 includes a hydraulic rod 18, a piston 20, and an oil inlet pipe 21. One end of the hydraulic rod 18 placed inside the cylinder body 1 is fixedly connected to the piston 20. When the cylinder body 1 works, the piston 20 slides inside the cylinder body 1. An oil outlet pipe 2 is fixedly connected to the cylinder body 1. A ball valve 22 is installed inside the oil outlet pipe 2. By controlling the ball valve 22 by the staff, a certain current-limiting effect can be achieved on the hydraulic oil. An annular block 3 is fixedly connected to the outer wall of the oil outlet pipe 2. A sealing gasket 4 is fixedly connected to the side wall of the annular block 3. An installation pipe 5 that fits with the sealing gasket 4 is sleeved outside the oil outlet pipe 2. Symmetrically distributed connecting blocks 6 are fixedly connected to the outer wall of the installation pipe 5. Symmetrically distributed guide rods 7 are fixedly connected to the side wall of the annular block 3. The guide rods 7 movably penetrate through the connecting blocks 6. Symmetrically distributed U-shaped blocks 8 are fixedly connected to the outer wall of the installation pipe 5. Symmetrically distributed connecting rods 9 are fixedly connected to the outer wall of the annular block 3. A clamping plate 10 is rotatably connected to the connecting rod 9. When the clamping plate 10 is rotated to the horizontal position and clamped on the U-shaped block 8, a top block 11 that abuts against the U-shaped block 8 is fixedly connected to the end of the clamping plate 10 away from the connecting rod 9. By applying a certain pressure to the clamping plate 10, the top block 11 abuts against the U-shaped block 8. A bolt 12 for fixedly connecting the U-shaped block 8 and the clamping plate 10 is threadedly connected to the U-shaped block 8. A wing nut 13 is installed at the end of the bolt 12. By rotating the bolt 12 through the wing nut 13, the U-shaped block 8 and the clamping plate 10 are fixed, completing the installation and fixation of the installation pipe 5 and ensuring the fixation effect of the installation pipe 5.

[0034] As Figure 5 shown, the buffering and current-limiting mechanism includes an installation ring 14 fixedly installed inside the cylinder body 1. The buffering and current-limiting mechanism includes a circular plate 14 slidably placed inside the cylinder body 1. Symmetrically distributed sleeves 15 are fixedly connected inside the cylinder body 1. A spring 16 is fixedly connected inside the sleeve 15. A fixed rod 17 is slidably connected inside the sleeve 15. One end of the fixed rod 17 away from the sleeve 15 is fixedly connected to the circular plate 14. According to the pushing action of the hydraulic oil pressure, the circular plate 14 moves towards the sleeve 15. The fixed rod 17 slides inside the sleeve 15. The spring 16 is compressed and deformed under the extrusion force, making the circular plate 14 fit with the top end face of the sleeve 15, playing a certain buffering role for the piston 20 and the hydraulic rod 18.

[0035] As Figure 5 shown, the end of the spring 16 is fixedly connected to the fixed rod 17. According to the pushing action of the hydraulic oil pressure, the circular plate 14 moves towards the sleeve 15. The fixed rod 17 slides inside the sleeve 15. The spring 16 is compressed and deformed under the extrusion force, making the circular plate 14 fit with the top end face of the sleeve 15.

[0036] As Figure 1 and Figure 5As shown, the inlet pipe 21 is fixedly connected to the cylinder body 1, and the piston 20 slides in the cylinder body 1.

[0037] As Figure 2 shown, symmetrically distributed limit blocks 19 are fixedly sleeved on the connecting rod 9. The limit blocks 19 are in contact with the clamping plate 10. By providing the limit blocks 19, it can be ensured that the clamping plate 10 will not slide on the connecting rod 9 when rotating.

[0038] As Figure 4 shown, the guide rod 7 penetrates through the gasket 4.

[0039] As Figure 1 shown, the inner wall of the installation pipe 5 is in fit with the outer wall of the outlet pipe 2.

[0040] Specifically, when this hydraulic cylinder with buffering and flow-limiting capabilities is in use: when the cylinder body 1 is working, the piston 20 slides in the cylinder body 1. According to the pushing action of the hydraulic oil pressure, the round plate 14 moves towards the direction of the sleeve 15. The fixed rod 17 slides in the sleeve 15, and the spring 16 is compressed and deformed by the extrusion force, so that the round plate 14 is in fit with the top end face of the sleeve 15, playing a certain buffering role for the piston 20 and the hydraulic rod 18. The staff can control the ball valve 22 to play a certain flow-limiting role for the hydraulic oil. When installing the installation pipe 5, the installation pipe 5 is sleeved on the outlet pipe 2, so that the guide rod 7 penetrates through the connecting block 6. Then the clamping plate 10 is rotated to the horizontal position and clamped on the U-shaped block 8. By applying a certain pressure to the clamping plate 10, the top block 11 abuts against the U-shaped block 8. Then the bolt 12 is rotated through the wing nut 13, and the U-shaped block 8 and the clamping plate 10 are fixed by the bolt 12, completing the installation and fixation of the installation pipe 5, ensuring the fixation effect of the installation pipe 5. When installing the installation pipe 5, it is not necessary to continuously apply a pressure towards the cylinder body 1 direction to the installation pipe 5 to assist in the installation. After the installation pipe 5 is fixed, its end is always in fit with the seal 4, ensuring the sealing performance between the outlet pipe 2 and the installation pipe 5.

[0041] The above embodiments are only used to illustrate the present invention rather than to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement to the present invention; and all technical solutions and their improvements that do not depart from the spirit and scope of the invention are covered within the scope of the claims of the present invention.

Claims

1. A hydraulic cylinder with buffering and current-limiting capabilities, comprising a cylinder body (1), characterized in that, The inside of the oil cylinder body (1) is provided with a buffer current-limiting mechanism. The oil cylinder body (1) includes a hydraulic rod (18), a piston (20) and an oil inlet pipe (21). One end of the hydraulic rod (18) placed inside the oil cylinder body (1) is fixedly connected to the piston (20). An oil outlet pipe (2) is fixedly connected to the oil cylinder body (1). A ball valve (22) is installed inside the oil outlet pipe (2). An annular block (3) is fixedly connected to the outer wall of the oil outlet pipe (2). A sealing gasket (4) is fixedly connected to the side wall of the annular block (3). An installation pipe (5) that fits with the sealing gasket (4) is sleeved outside the oil outlet pipe (2). Symmetrically distributed connecting blocks (6) are fixedly connected to the outer wall of the installation pipe (5). Symmetrically distributed guide rods (7) are fixedly connected to the side wall of the annular block (3). The guide rods (7) movably penetrate through the connecting blocks (6). Symmetrically distributed U-shaped blocks (8) are fixedly connected to the outer wall of the installation pipe (5). Symmetrically distributed connecting rods (9) are fixedly connected to the outer wall of the annular block (3). A clamping plate (10) is rotatably connected to the connecting rod (9). A top block (11) that abuts against the U-shaped block (8) is fixedly connected to one end of the clamping plate (10) away from the connecting rod (9). A bolt (12) for fixedly connecting the U-shaped block (8) and the clamping plate (10) is threadedly connected to the U-shaped block (8). A butterfly nut (13) is installed at the end of the bolt (12).

2. The hydraulic cylinder with buffering and current-limiting capabilities according to claim 1, wherein, The buffer current-limiting mechanism includes a circular plate (14) slidably placed inside the oil cylinder body (1). Symmetrically distributed sleeves (15) are fixedly connected inside the oil cylinder body (1). A spring (16) is fixedly connected inside the sleeve (15). A fixed rod (17) is slidably connected inside the sleeve (15). One end of the fixed rod (17) away from the sleeve (15) is fixedly connected to the circular plate (14).

3. The hydraulic cylinder with buffer current-limiting ability according to claim 2, characterized in that, The end of the spring (16) is fixedly connected to the fixed rod (17).

4. A hydraulic cylinder with buffering and current-limiting capabilities according to claim 3, characterized in that, The oil inlet pipe (21) is fixedly connected to the oil cylinder body (1). The piston (20) slides inside the oil cylinder body (1).

5. A hydraulic cylinder with buffering and current-limiting capabilities according to claim 4, characterized in that, Symmetrically distributed limit blocks (19) are fixedly sleeved on the connecting rod (9). The limit blocks (19) are in contact with the clamping plate (10).

6. A hydraulic cylinder with buffer current limiting ability according to claim 5, characterized in that, The guide rod (7) penetrates through the sealing gasket (4).

7. A hydraulic cylinder with buffering and current-limiting capabilities according to claim 6, characterized in that, The inner wall of the installation pipe (5) is in fit with the outer wall of the oil outlet pipe (2).

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