Hydraulic oil cylinder sealing device

Abstract

The utility model provides a hydraulic oil cylinder sealing device, which relates to the technical field of hydraulic oil cylinders, and comprises a fixed box, the inner bottom wall of the fixed box is fixedly connected with a hydraulic cylinder body, the inner wall of the hydraulic cylinder body is slidably connected with a piston rod, and the top end of the piston rod is fixedly connected with a cross-shaped connecting plate; an air blowing assembly is arranged in the fixed box and comprises two resettable air bags fixedly connected to the inner bottom wall of the fixed box and two movable plates fixedly connected to the bottom face of the cross-shaped connecting plate. According to the hydraulic oil cylinder sealing device, through the arrangement of the air blowing assembly and the sweeping assembly, the piston rod can be swept and blown when the piston rod enters the hydraulic cylinder body, dust and other sundries on the surface of the piston rod are removed, and compared with the mode that the piston rod directly enters the hydraulic cylinder body, the number of dust and other sundries entering the hydraulic cylinder body can be reduced; the sealing ring in the hydraulic cylinder body is not prone to damage, and the service life of the sealing ring is prolonged.

Description

Technical Field

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

[0002] The hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating 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. In order to avoid hydraulic oil leakage when the hydraulic cylinder is in use, a sealing ring is used to seal the cylinder body and the piston rod.

[0003] A hydraulic cylinder sealing device is disclosed in the Chinese patent application publication specification CN219754944U. The sealing ring of the hydraulic cylinder sealing device is clamped at the position where the piston rod enters and exits the cylinder body by a first arc block and a second arc block. The first arc block and the second arc block can be opened, thereby facilitating the replacement of the sealing ring.

[0004] However, during the implementation of the technical solution of the above patent, dust and other debris are likely to enter the hydraulic cylinder body along with the piston rod. When the hydraulic cylinder is in use, the piston rod needs to frequently enter and exit the hydraulic cylinder body. Dust and other debris attached to the surface of the piston rod will enter the cylinder body along with the piston rod. Although the sealing ring can seal a large amount of dust and other debris on the piston rod, the frequent entry and exit of the piston rod will still cause dust and other debris to wear the sealing ring, resulting in faster wear of the sealing ring. Utility Model Content

[0005] The purpose of the utility model is to provide a hydraulic cylinder sealing device in order to solve the above problems, so as to solve the problem in the prior art that dust and other debris attached to the surface of the piston rod easily enter the hydraulic cylinder body along with the piston rod, causing the sealing ring to wear faster.

[0006] The utility model is implemented through the following technical scheme: a hydraulic oil cylinder sealing device, comprising a fixed box, the inner bottom wall of the fixed box is fixedly connected to a hydraulic cylinder body, the inner wall of the hydraulic cylinder body is slidably connected to a piston rod, and the top end of the piston rod is fixedly connected to a cross connecting plate;

[0007] The fixed box is provided with a blowing assembly inside, the blowing assembly comprising two repositionable airbags fixedly connected to the bottom wall of the fixed box and two movable plates fixedly connected to the bottom surface of the cross connecting plate, the outer surfaces of the two repositionable airbags are fixedly connected to two connecting pipes, and the ends of the four connecting pipes away from the repositionable airbags are fixedly connected to air jet nozzles;

[0008] A cleaning assembly is provided on the outside of the fixed box, and the cleaning assembly includes a cleaning ring, two rotating rods and two racks fixedly connected to the bottom surface of the cross connecting plate. The outer surface of the cleaning ring is fixedly connected to two symmetrical sliding frames, and the two rotating rods are fixedly connected to a rotating disk at one end close to the sliding frame, and the outer surfaces of the two rotating disks are fixedly connected to push rods, and the two push rods are respectively slidably connected to the inner walls of the two sliding frames.

[0009] Furthermore, the two movable plates both penetrate the fixed box and are slidably connected to the fixed box, the two movable plates are respectively fixedly connected to the upper surfaces of the two resettable airbags, the four connecting pipes both penetrate the fixed box and are fixedly connected to the fixed box, the four air nozzles are fixedly connected to the upper surface of the hydraulic cylinder body, the four air nozzles are all adapted to the piston rod, and the air nozzles can blow air to the piston rod to blow off dust and other debris on the piston rod.

[0010] Preferably, the ends of the two rotating rods away from the sliding frame are fixedly connected with gears, and the two gears are respectively meshed with two racks, and the gears can be driven to rotate through the racks when the cross connecting plate moves up and down.

[0011] Furthermore, the outer surfaces of the two racks are slidably connected with guide rails, and the two guide rails are fixedly connected to the outer surface of the fixed box, and the guide rails play an auxiliary guiding role for the movement of the racks.

[0012] Furthermore, the outer surfaces of the two rotating rods are rotatably connected to support seats, and the two support seats are fixedly connected to the upper surface of the fixed box, and the support seats play a supporting role for the rotation of the rotating rods.

[0013] Furthermore, two sliding tubes are fixedly connected to the outer surfaces of the two sliding frames, two U-shaped frames are arranged outside the cleaning ring, the two U-shaped frames are fixedly connected to the upper surface of the fixed box, the sliding tubes are slidably connected to the outer surfaces of the U-shaped frames, and the sliding tubes and the U-shaped frames serve as guides for the movement of the sliding frames.

[0014] Preferably, a replaceable component is arranged above the cross connecting plate, and the replaceable component includes a clamping seat fixedly connected to the upper surface of the cross connecting plate, and the inner wall of the clamping seat is installed with a clamping block by bolts, and different mounting seats can be arranged on the clamping block, and the mounting seat on the clamping block can be connected and installed with an external device.

[0015] The utility model provides a hydraulic cylinder sealing device, which has the following beneficial effects:

[0016] 1. The hydraulic cylinder sealing device can clean and blow air to the piston rod when the piston rod enters the hydraulic cylinder body through the setting of the blowing component and the cleaning component, so as to remove dust and other debris on the surface of the piston rod. Compared with the piston rod directly entering the hydraulic cylinder body, the amount of dust and other debris entering the hydraulic cylinder body can be reduced, so that the sealing ring in the hydraulic cylinder body is not easily damaged, and the service life of the sealing ring is increased.

[0017] 2. The hydraulic cylinder sealing device is provided with replaceable components. The bolts are unscrewed from the clamping seat and the clamping block at the same time, and then the clamping block can be removed from the clamping seat. A new clamping block is replaced according to the use requirements, and then the clamping block is installed in the clamping seat again by bolts. In this way, the piston rod can be installed and connected to different equipment, making the device more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the fixed box of the utility model;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the rack and guide rail of the utility model;

[0021] Figure 4 It is a schematic diagram of the separate structure of the push rod and the sliding frame of the utility model;

[0022] Figure 5 The utility model is a schematic diagram of the split structure of the clamping seat and the clamping block.

[0023] Description of Reference Numerals

[0024] 1. Fixed box;

[0025] 2. Blowing assembly; 21. Repositionable airbag; 22. Moving plate; 23. Connecting pipe; 24. Air jet nozzle;

[0026] 3. Cleaning assembly; 31. Cleaning ring; 32. Sliding frame; 33. Rotating plate; 34. Push rod; 35. Rotating rod; 36. Gear; 37. Rack; 38. Guide rail; 39. Support seat; 310. Sliding tube; 311. U-shaped frame;

[0027] 4. Replaceable components; 41. Card connector; 42. Card connector block;

[0028] 5. Hydraulic cylinder body; 6. Piston rod; 7. Cross connecting plate. DETAILED DESCRIPTION

[0029] The utility model embodiment provides a hydraulic oil cylinder sealing device.

[0030] Please refer to Figure 1 and Figure 2 , including a fixed box 1, the inner bottom wall of the fixed box 1 is fixedly connected to a hydraulic cylinder body 5, the inner wall of the hydraulic cylinder body 5 is slidably connected to a piston rod 6, a sealing gasket is arranged in the hydraulic cylinder body 5 to prevent leakage of hydraulic oil in the hydraulic cylinder body 5, and the top of the piston rod 6 is fixedly connected to a cross connecting plate 7.

[0031] Please refer to Figure 1 and Figure 2 A blowing assembly 2 is provided inside the fixed box 1, and the blowing assembly 2 includes two resettable airbags 21 fixedly connected to the inner bottom wall of the fixed box 1 and two movable plates 22 fixedly connected to the bottom surface of the cross connecting plate 7. When the movable plates 22 move downward, the resettable airbags 21 will be compressed and become smaller. When the movable plates 22 move upward, the resettable airbags 21 will be reset and become larger. The outer surfaces of the two resettable airbags 21 are fixedly connected to two connecting pipes 23, and the ends of the four connecting pipes 23 away from the resettable airbags 21 are fixedly connected to the air nozzles 24.

[0032] The two movable plates 22 both penetrate the fixed box 1 and are slidably connected to the fixed box 1. The two movable plates 22 are respectively fixedly connected to the upper surfaces of the two resettable airbags 21. The four connecting pipes 23 both penetrate the fixed box 1 and are fixedly connected to the fixed box 1. The four air nozzles 24 are fixedly connected to the upper surface of the hydraulic cylinder body 5. The four air nozzles 24 are all adapted to the piston rod 6. The air nozzles 24 can blow air to the piston rod 6 to blow off dust and other debris on the piston rod 6.

[0033] Please refer to Figure 1 , Figure 3 and Figure 4 A cleaning assembly 3 is provided on the outside of the fixed box 1. The cleaning assembly 3 includes a cleaning ring 31, two rotating rods 35 and two racks 37 fixedly connected to the bottom surface of the cross connecting plate 7. The outer surface of the cleaning ring 31 is fixedly connected to two symmetrical sliding frames 32. The ends of the two rotating rods 35 close to the sliding frames 32 are fixedly connected to rotating disks 33. The outer surfaces of the two rotating disks 33 are fixedly connected to push rods 34. When the rotating disk 33 rotates, the push rods 34 perform orbital motion. The two push rods 34 are respectively slidably connected to the inner walls of the two sliding frames 32. When the push rods 34 orbit, they will push the sliding frames 32 to move back and forth up and down.

[0034] One end of the two rotating rods 35 away from the sliding frame 32 is fixedly connected with a gear 36, and the two gears 36 are respectively meshed with two racks 37. When the cross connecting plate 7 moves up and down, the gears 36 can be driven to rotate through the racks 37.

[0035] The outer surfaces of the two racks 37 are slidably connected to guide rails 38, and the two guide rails 38 are fixedly connected to the outer surface of the fixed box 1. The guide rails 38 serve as auxiliary guides for the movement of the racks 37. The outer surfaces of the two rotating rods 35 are rotatably connected to support seats 39, and the two support seats 39 are fixedly connected to the upper surface of the fixed box 1, and the support seats 39 serve as supports for the rotation of the rotating rods 35.

[0036] Two sliding tubes 310 are fixedly connected to the outer surfaces of the two sliding frames 32, and two U-shaped frames 311 are arranged outside the cleaning ring 31. The two U-shaped frames 311 are fixedly connected to the upper surface of the fixed box 1, and the sliding tubes 310 are slidably connected to the outer surfaces of the U-shaped frames 311. The sliding tubes 310 and the U-shaped frames 311 play a guiding role in the movement of the sliding frames 32.

[0037] Please refer to Figure 1 and Figure 5 A replaceable component 4 is arranged above the cross connecting plate 7. The replaceable component 4 includes a clamping seat 41 fixedly connected to the upper surface of the cross connecting plate 7. A clamping block 42 is installed on the inner wall of the clamping seat 41 by bolts. Different mounting seats can be arranged on the clamping block 42, and the mounting seats on the clamping block 42 can be connected and installed with external equipment.

[0038] When the utility model is in use: when the piston rod 6 is retracted into the hydraulic cylinder body 5, the cross connecting plate 7 is driven to move downward, the gear 36 is driven to rotate through the rack 37, and the push rod 34 is made to perform an orbital motion, and the push rod 34 pushes the sliding frame 32 and the cleaning ring 31 to perform an up and down reciprocating motion, so that the cleaning ring 31 cleans the surface of the piston rod 6. At the same time, when the cross connecting plate 7 moves downward, it will push the resetting airbag 21 to contract through the moving plate 22, so that the resetting airbag 21 blows air to the piston rod 6 through the connecting pipe 23 and the air nozzle 24, thereby cleaning and blowing the surface of the piston rod 6, and removing dust and other debris on the surface of the piston rod 6. The device can remove dust and other debris on the surface of the piston rod 6, reduce the amount of dust and other debris entering the hydraulic cylinder body 5, make the sealing ring in the hydraulic cylinder body 5 not easily damaged, and increase the service life of the sealing ring.

[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A hydraulic cylinder sealing device, comprising a fixing box (1), characterized in that: The inner bottom wall of the fixed box (1) is fixedly connected to a hydraulic cylinder body (5), the inner wall of the hydraulic cylinder body (5) is slidably connected to a piston rod (6), and the top end of the piston rod (6) is fixedly connected to a cross connecting plate (7); An air blowing assembly (2) is arranged inside the fixed box (1), and the air blowing assembly (2) comprises two repositionable air bags (21) fixedly connected to the inner bottom wall of the fixed box (1) and two movable plates (22) fixedly connected to the bottom surface of the cross connecting plate (7), the outer surfaces of the two repositionable air bags (21) are fixedly connected to two connecting pipes (23), and the ends of the four connecting pipes (23) away from the repositionable air bags (21) are fixedly connected to air nozzles (24); A cleaning assembly (3) is arranged outside the fixed box (1), and the cleaning assembly (3) comprises a cleaning ring (31), two rotating rods (35) and two racks (37) fixedly connected to the bottom surface of the cross connecting plate (7); the outer surface of the cleaning ring (31) is fixedly connected to two symmetrical sliding frames (32); one end of the two rotating rods (35) close to the sliding frames (32) is fixedly connected to a rotating disk (33); the outer surfaces of the two rotating disks (33) are fixedly connected to push rods (34); the two push rods (34) are respectively slidably connected to the inner walls of the two sliding frames (32).

2. A hydraulic cylinder sealing device according to claim 1, characterized in that: The two movable plates (22) both penetrate the fixed box (1) and are slidably connected to the fixed box (1); the two movable plates (22) are respectively fixedly connected to the upper surfaces of the two resettable airbags (21); the four connecting pipes (23) both penetrate the fixed box (1) and are fixedly connected to the fixed box (1); the four air nozzles (24) are fixedly connected to the upper surface of the hydraulic cylinder body (5); and the four air nozzles (24) are adapted to the piston rod (6).

3. A hydraulic cylinder sealing device according to claim 1, characterized in that: One end of the two rotating rods (35) away from the sliding frame (32) is fixedly connected to a gear (36), and the two gears (36) are respectively meshed with two racks (37).

4. A hydraulic cylinder sealing device according to claim 1, characterized in that: The outer surfaces of the two racks (37) are both slidably connected to guide rails (38), and the two guide rails (38) are both fixedly connected to the outer surface of the fixed box (1).

5. The hydraulic cylinder sealing device according to claim 1, characterized in that: The outer surfaces of the two rotating rods (35) are both rotatably connected to a support seat (39), and the two support seats (39) are both fixedly connected to the upper surface of the fixed box (1).

6. A hydraulic cylinder sealing device according to claim 1, characterized in that: The outer surfaces of the two sliding frames (32) are fixedly connected to two sliding tubes (310), the outside of the cleaning ring (31) is provided with two U-shaped frames (311), the two U-shaped frames (311) are fixedly connected to the upper surface of the fixed box (1), and the sliding tubes (310) are slidably connected to the outer surfaces of the U-shaped frames (311).

7. The hydraulic cylinder sealing device according to claim 1, characterized in that: A replaceable component (4) is arranged above the cross connecting plate (7), and the replaceable component (4) comprises a clamping seat (41) fixedly connected to the upper surface of the cross connecting plate (7), and a clamping block (42) is mounted on the inner wall of the clamping seat (41) by means of bolts.

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