Buffer type hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, in particular to a buffer type hydraulic oil cylinder which comprises a cylinder barrel, a connecting seat is fixedly connected to the end of the cylinder barrel, and two oil pipes communicated with the inside of the cylinder barrel are fixedly connected to the outer wall of the cylinder barrel. According to the hydraulic oil cylinder, when the sealing ring in the cylinder barrel of the hydraulic oil cylinder is gradually corroded by hydraulic oil after being used for a long time, so that the sealing performance of the sealing ring is reduced, oil pressure enables the hydraulic oil to enter the space between the connecting ring and the circular plate through a gap between the sealing ring and the piston rod, and the hydraulic oil can be collected through the collecting barrel; when the liquid level of the hydraulic oil in the collecting cylinder rises, the floating ring is driven to rise gradually, and then the floating ring drives the two electrode columns to slide and rise on the collecting cylinder until the top ends of the electrode columns make contact with the power connection pieces; therefore, the battery in the collecting cylinder can supply power to the buzzer.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic oil cylinders, in particular to a buffer type hydraulic oil cylinder. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The hydraulic cylinder consists of a sealed cylinder and a piston. When the hydraulic cylinder is connected to high-pressure liquid, the liquid enters the cylinder through the oil inlet and pushes the piston to one side. This pressure is transmitted through the surface of the piston in contact with the working object, causing it to generate force. When the liquid is discharged through the oil outlet, the piston returns to its original position.

[0003] After long-term use, the sealing ring inside the hydraulic cylinder will gradually be corroded by the hydraulic oil. Once the sealing ring fails, the hydraulic cylinder will not be able to maintain good airtightness, thereby causing leakage of hydraulic oil. The leakage will not only cause decompression of the hydraulic system and insufficient oil pressure, but may also further lead to problems such as decreased machine performance and increased noise. Therefore, the sealing ring that is about to fail needs to be replaced, but the existing hydraulic cylinder lacks a corresponding warning structure; the piston rod in the current hydraulic cylinder will impact the cylinder barrel when it is retracted, and the cylinder barrel may be damaged after multiple collisions with the cylinder barrel, thereby reducing the service life of the hydraulic cylinder. Utility Model Content

[0004] The purpose of the utility model is to provide a buffer hydraulic cylinder to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A buffer hydraulic cylinder comprises a cylinder barrel, the end of the cylinder barrel is fixedly connected to a connecting seat, two oil pipes connected to the interior of the cylinder barrel are fixedly connected to the outer wall of the cylinder barrel, a circular plate is fixedly connected to the end of the cylinder barrel, a piston rod is slidably sleeved at the center of the circular plate, one end of the piston rod is fixedly connected to an oil pressure piston, the other end of the piston rod is fixedly connected to a movable ring, and a sealing ring is fixedly provided on the inner wall of the circular plate.

[0007] Furthermore, a collecting tube is fixedly sleeved on the end of the cylinder, a connecting ring which is connected to the circular plate is fixedly connected inside the collecting tube, and two liquid outlet holes are symmetrically arranged on the outer wall of the connecting ring.

[0008] Furthermore, a floating ring is slidably sleeved inside the collecting tube, two limit rods are symmetrically slidably connected in the floating ring, two electrode columns are symmetrically fixedly connected to the top of the floating ring, a reset spring fixedly connected to the floating ring is sleeved outside the electrode column, and two electrical connection plates connected to the electrode columns are symmetrically fixedly connected to the top of the collecting tube.

[0009] Furthermore, two buzzer shells which are sleeved with the power strips are symmetrically and fixedly connected to the top of the collecting tube, and a buzzer is fixedly arranged inside the buzzer shell.

[0010] Furthermore, a pressure ring is fixedly sleeved on the outer wall of the piston rod, an annular seat is fixedly connected to the bottom of the collecting cylinder, a buffer spring is fixedly connected to the center position of the annular seat, one end of the buffer spring is fixedly connected to a buffer plate, and two limit rods symmetrically fixedly connected to the buffer plate are slidably plugged into the annular seat.

[0011] Furthermore, two sliding columns are symmetrically fixedly connected to the buffer plate, and round blocks are fixedly connected to the ends of the two sliding columns. Two limiting circular holes that are symmetrically arranged on the annular seat and are slidably sleeved with the round blocks are fixedly arranged, and shock-absorbing pads are fixedly arranged at the ends of the round blocks.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. After long-term use, the sealing ring in the cylinder of the hydraulic oil cylinder will be gradually corroded by the hydraulic oil, causing the sealing performance of the sealing ring to decrease. Then the hydraulic oil in the cylinder will generate oil pressure when the hydraulic press is working. The oil pressure will cause the hydraulic oil to drill into the gap between the sealing ring and the piston rod and enter between the connecting ring and the round plate. As the hydraulic oil continues to leak, the hydraulic oil flows from the outlet hole to the collecting tube. The collecting tube can be used to collect the hydraulic oil, thereby preventing the hydraulic oil from splashing or flowing out and causing oil stains on the machine surface.

[0014] 2. When the hydraulic oil level in the collection tube rises, the floating ring will gradually rise, and then the floating ring will drive the two electrode columns to slide up on the collection tube until the top of the electrode column contacts the power strip, so that the battery in the collection tube can power the buzzer, making the buzzer sound an alarm to remind the staff to replace the sealing ring in the cylinder in time to prevent the performance of the hydraulic cylinder from deteriorating.

[0015] 3. When the piston rod is retracted, the piston rod will drive the pressure ring to impact the buffer plate. The buffer spring connected to the buffer plate can reduce the impact force caused by the retraction of the piston rod on the cylinder, thereby avoiding the cylinder body from rupture after repeated impacts, thereby improving the service life of the hydraulic cylinder. The buffer plate will drive the sliding column and the round block to slide in the limiting circular hole, and when the round block contacts the annular seat, the piston rod can be damped through the shock-absorbing pad. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal structure of the collecting tube in the utility model;

[0019] Figure 4 It is a schematic diagram of the connection structure of the buffer plate in the utility model.

[0020] In the figure: 101, cylinder; 102, oil pipe; 103, connecting seat; 104, piston rod; 105, movable ring; 106, pressure ring; 107, round plate; 108, sealing ring; 201, collecting tube; 202, connecting ring; 203, liquid outlet; 204, floating ring; 205, limit rod 1; 206, electrode column; 207, reset spring; 208, connecting plate; 209, buzzer shell; 301, buffer plate; 302, sliding column; 303, round block; 304, shock pad; 305, limit rod 2; 306, buffer spring; 307, annular seat; 308, limit circular hole. 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] See also Figures 1 to 4 In the embodiment of the utility model, a buffer hydraulic cylinder comprises a cylinder barrel 101, a connecting seat 103 is fixedly connected to the end of the cylinder barrel 101, two oil pipes 102 connected to the interior of the cylinder barrel 101 are fixedly connected to the outer wall of the cylinder barrel 101, a circular plate 107 is fixedly connected to the end of the cylinder barrel 101, a piston rod 104 is slidably sleeved at the center of the circular plate 107, one end of the piston rod 104 is fixedly connected to the oil pressure piston, the other end of the piston rod 104 is fixedly connected to the movable ring 105, and a sealing ring 108 is fixedly provided on the inner wall of the circular plate 107; a collecting barrel 201 is fixedly sleeved at the end of the cylinder barrel 101, a connecting ring 202 connected to the circular plate 107 is fixedly connected to the interior of the collecting barrel 201, and two liquid outlet holes 203 are symmetrically provided on the outer wall of the connecting ring 202.

[0023] Specifically, after long-term use, the sealing ring 108 in the hydraulic cylinder barrel 101 will be gradually corroded by the hydraulic oil, causing the sealing performance of the sealing ring 108 to decrease. Then, the hydraulic oil in the cylinder barrel 101 generates oil pressure when the hydraulic press is working. The oil pressure will cause the hydraulic oil to drill into the gap between the sealing ring 108 and the piston rod 104 and enter between the connecting ring 202 and the circular plate 107. As the hydraulic oil continues to leak, the hydraulic oil flows from the liquid outlet 203 to the collecting tube 201. The collecting tube 201 can be used to collect the hydraulic oil, thereby preventing the hydraulic oil from splashing or flowing out and causing oil stains on the machine surface.

[0024] Embodiment 1

[0025] like Figure 3 As shown, in this embodiment, a floating ring 204 is slidably sleeved inside the collecting tube 201, two limit rods 205 are symmetrically slidably connected in the floating ring 204, two electrode columns 206 are symmetrically fixedly connected to the top of the floating ring 204, and a reset spring 207 fixedly connected to the floating ring 204 is sleeved on the outside of the electrode column 206; two power connection plates 208 corresponding to the electrode columns 206 are symmetrically fixedly connected to the top of the collecting tube 201; two buzzer shells 209 sleeved with the power connection plates 208 are symmetrically fixedly connected to the top of the collecting tube 201, and a buzzer is fixedly arranged inside the buzzer shell 209.

[0026] In this embodiment, when the hydraulic oil level in the collection tube 201 increases, the floating ring 204 will be driven to gradually rise, and then the floating ring 204 will drive the two electrode columns 206 to slide and rise on the collection tube 201 until the top of the electrode column 206 contacts the power connection plate 208, so that the battery in the collection tube 201 can power the buzzer, so that the buzzer sends out an alarm to remind the staff to replace the sealing ring 108 in the cylinder 101 in time to prevent the performance of the hydraulic cylinder from being degraded.

[0027] Embodiment 2

[0028] like Figure 4 As shown, in the present embodiment, a pressure ring 106 is fixedly sleeved on the outer wall of the piston rod 104, an annular seat 307 is fixedly connected to the bottom of the collecting cylinder 201, a buffer spring 306 is fixedly connected to the center position of the annular seat 307, one end of the buffer spring 306 is fixedly connected to a buffer plate 301, and two limiting rods 305 slidably plugged with the annular seat 307 are symmetrically fixedly connected to the buffer plate 301; two sliding columns 302 are symmetrically fixedly connected to the buffer plate 301, and round blocks 303 are fixedly connected to the ends of the two sliding columns 302, and two limiting circular holes 308 slidably sleeved with the round blocks 303 are symmetrically provided on the annular seat 307, and shock-absorbing pads 304 are fixedly provided at the ends of the round blocks 303.

[0029] In specific implementation, when the piston rod 104 is retracted, the piston rod 104 will drive the pressure ring 106 to impact the buffer plate 301. The buffer spring 306 connected to the buffer plate 301 can reduce the impact force caused by the retraction of the piston rod 104 on the cylinder 101, thereby avoiding the cylinder body 101 from being broken after repeated impacts, thereby improving the service life of the hydraulic cylinder. The buffer plate 301 will drive the sliding column 302 and the round block 303 to slide in the limiting circular hole 308, and when the round block 303 and the annular seat 307 are in contact, the piston rod 104 can be damped through the shock-absorbing pad 304.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A buffer hydraulic cylinder, characterized in that: The invention comprises a cylinder (101), the end of the cylinder (101) is fixedly connected to a connecting seat (103), the outer wall of the cylinder (101) is fixedly connected to two oil pipes (102) which are connected to the inside of the cylinder (101), the end of the cylinder (101) is fixedly connected to a circular plate (107), a piston rod (104) is slidably sleeved at the center of the circular plate (107), one end of the piston rod (104) is fixedly connected to an oil pressure piston, the other end of the piston rod (104) is fixedly connected to a movable ring (105), and a sealing ring (108) is fixedly arranged on the inner wall of the circular plate (107).

2. A buffer hydraulic cylinder according to claim 1, characterized in that: A collecting tube (201) is fixedly sleeved on the end of the cylinder (101), a connecting ring (202) which is connected to the circular plate (107) is fixedly connected inside the collecting tube (201), and two liquid outlet holes (203) are symmetrically provided on the outer wall of the connecting ring (202).

3. A buffer hydraulic cylinder according to claim 2, characterized in that: The collecting tube (201) is internally slidably sleeved with a floating ring (204), two limiting rods (205) are symmetrically slidably connected in the floating ring (204), two electrode columns (206) are symmetrically fixedly connected to the top of the floating ring (204), a return spring (207) fixedly connected to the floating ring (204) is sleeved on the outside of the electrode column (206), and two electrical connection plates (208) connected to the electrode columns (206) are symmetrically fixedly connected to the top of the collecting tube (201).

4. A buffer hydraulic cylinder according to claim 3, characterized in that: Two buzzer shells (209) sleeved with the power strip (208) are symmetrically and fixedly connected to the top of the collection tube (201), and a buzzer is fixedly arranged inside the buzzer shell (209).

5. A buffer hydraulic cylinder according to claim 4, characterized in that: A pressure ring (106) is fixedly sleeved on the outer wall of the piston rod (104); an annular seat (307) is fixedly connected to the bottom of the collecting cylinder (201); a buffer spring (306) is fixedly connected to the center of the annular seat (307); one end of the buffer spring (306) is fixedly connected to a buffer plate (301); and two limit rods (305) slidably plugged with the annular seat (307) are symmetrically fixedly connected to the buffer plate (301).

6. A buffer hydraulic cylinder according to claim 5, characterized in that: Two sliding columns (302) are symmetrically fixedly connected to the buffer plate (301), and round blocks (303) are fixedly connected to the ends of the two sliding columns (302). Two limiting circular holes (308) that are slidably sleeved with the round blocks (303) are symmetrically provided on the annular seat (307), and shock-absorbing pads (304) are fixedly arranged at the ends of the round blocks (303).

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