A mower stamped oil passage leak-proof joint device

Abstract

The utility model discloses a mower stamping type oil circuit leakproof joint device, include: installation pipe no.

Description

Technical Field

[0001] This utility model relates to the field of leak-proof connector technology, specifically a press-type oil circuit leak-proof connector device for lawnmowers. Background Technology

[0002] In the field of agricultural machinery, lawn mowers are a common type of equipment. The stability and reliability of their hydraulic systems are crucial for the normal operation of the equipment. The hydraulic systems of lawn mowers usually need to withstand high pressure, and during operation, there may be situations where the oil pressure suddenly increases, such as due to blade jamming, oil circuit blockage, or oil pump failure. A sudden increase in oil pressure can not only damage the hydraulic system itself, but also cause safety hazards such as oil leaks, affecting the performance of the equipment and the safety of the operators.

[0003] Existing devices lack effective protective measures during use. Once the oil pressure exceeds the joint's bearing capacity, the joint seal will fail, leading to oil leakage. Therefore, we need to propose a lawnmower-type press-type oil circuit leak-proof joint device. Utility Model Content

[0004] The purpose of this utility model is to provide a press-type oil circuit anti-leakage joint device for lawnmowers, which solves the problems mentioned in the background art by setting an oil outlet mechanism to reduce oil pressure and discharge oil to relieve pressure when the oil pressure increases.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A press-fit type oil circuit leak-proof connector device for lawnmowers, comprising:

[0007] Installation pipe one, wherein an oil outlet hole is provided inside the installation pipe one, and an oil outlet mechanism for reducing oil pressure is provided on the installation pipe one;

[0008] The oil outlet mechanism includes a sealing block, a lifting plate, a sealing shell, a piston plate, a spring, and an oil outlet pipe;

[0009] The oil outlet hole is slidably connected to a sealing block, the lower end of the sealing block is fixedly connected to a lifting plate, the lower end of the first mounting pipe is fixedly connected to a sealing shell, the sealing shell is in contact with a piston plate, the lower end of the lifting plate is provided with a spring, the sealing shell is fixedly connected to an oil outlet pipe, and the sealing shell is provided with an adjustment component for adjusting the height of the piston plate.

[0010] Preferably, two symmetrically distributed sliders are fixedly connected to the outer side of the lifting plate, and the two sliders are in contact with the mounting tube and the sealing shell, respectively.

[0011] Preferably, two guide rails are slidably connected to the outer sides of the two sliders, and the multiple guide rails are slidably connected to the sealing shell.

[0012] Preferably, the adjustment assembly includes a screw and a knob;

[0013] The sealing shell has an internal threaded connection to a screw rod, which is rotatably connected to a piston plate. A knob is fixedly connected to the lower end of the screw rod.

[0014] Preferably, a hexagonal block is fixedly connected to the outer side of the first mounting tube, and a second mounting tube is threadedly connected to the inner side of the first mounting tube.

[0015] Preferably, a hexagonal block 2 is fixedly connected to the outer side of the second mounting tube, and the hexagonal block 2 is in contact with the first mounting tube and the first hexagonal block respectively.

[0016] Preferably, the internal fixed connection of the mounting tube is a limit ring.

[0017] Preferably, a sealing ring is in contact with the side wall of the limiting ring, and the sealing ring is in contact with the second mounting tube.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This utility model incorporates an oil outlet mechanism to reduce oil pressure. When the oil pressure rises sharply due to malfunction or improper operation, the oil outlet mechanism automatically opens the oil outlet channel to discharge excess oil, preventing the oil pressure from exceeding the withstand limits of components such as hydraulic pumps, oil pipes, and joints, thus preventing pipe bursts, joint detachment, or seal failure. Attached Figure Description

[0020] Figure 1 This is one of the structural schematic diagrams of this utility model;

[0021] Figure 2 This is the second structural schematic diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the oil dispensing mechanism of this utility model.

[0024] In the diagram: 1. Mounting pipe one; 2. Hexagonal block one; 3. Mounting pipe two; 4. Hexagonal block two; 5. Limiting ring; 6. Sealing ring; 7. Oil outlet hole; 8. Oil outlet mechanism; 81. Sealing block; 82. Lifting plate; 83. Slider; 84. Guide rail; 85. Sealing shell; 86. Screw; 87. Knob; 88. Piston plate; 89. Spring; 810. Oil outlet pipe. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-4 This utility model provides a technical solution:

[0027] A press-fit type oil circuit leak-proof connector device for lawnmowers, comprising:

[0028] Installation pipe 1, with an oil outlet hole 7 inside the installation pipe 1, and an oil outlet mechanism 8 for reducing oil pressure is provided on the installation pipe 1.

[0029] The oil outlet mechanism 8 includes a sealing block 81, a lifting plate 82, a sealing shell 85, a piston plate 88, a spring 89, and an oil outlet pipe 810;

[0030] Among them, a sealing block 81 is slidably connected inside the oil outlet hole 7, a lifting plate 82 is fixedly connected to the lower end of the sealing block 81, a sealing shell 85 is fixedly connected to the lower end of the mounting pipe 1, a piston plate 88 is in contact inside the sealing shell 85, a spring 89 is provided at the lower end of the lifting plate 82, an oil outlet pipe 810 is fixedly connected inside the sealing shell 85, and an adjustment component for adjusting the height of the piston plate 88 is provided inside the sealing shell 85.

[0031] For example, the mounting tube 1 is a high-strength aluminum alloy tube formed by stamping, with an oil outlet hole 7 inside. The oil outlet hole 7 is a pressure relief channel. The sealing block 81 is made of high-hardness rubber material, which fits tightly against the inner wall of the oil outlet hole 7 to achieve dynamic sealing. The spring 89 is made of stainless steel with high elastic modulus. When the oil pressure exceeds the set value, the oil pressure pushes the sealing block 81 down, compresses the spring 89, opens the oil outlet channel, and achieves pressure relief. The sealing shell 85 is made of 304 stainless steel by stamping, and the side wall is provided with a transparent observation window (polycarbonate material). Polycarbonate (PC) has high strength, high toughness, good heat resistance and cold resistance, and high transparency, which can clearly observe the internal oil flow and the working status of the sealing block 81. In addition, PC material also has good impact resistance and can adapt to the use of lawnmowers in complex working conditions. The oil outlet pipe 810 is connected to the inside of the sealing shell 85 to guide the overpressured oil to the return oil line or oil tank to prevent leakage to the external environment.

[0032] Two symmetrically distributed sliders 83 are fixedly connected to the outer side of the lifting plate 82. The two sliders 83 are in contact with the mounting tube 1 and the sealing shell 85 respectively. Two guide rails 84 are slidably connected to the outer side of the two sliders 83 respectively. The multiple guide rails 84 are slidably connected to the sealing shell 85 respectively.

[0033] For example, the lifting plate 82 is slidably connected to the guide rail 84 via the slider 83 to ensure a smooth lifting process and avoid deviation that could lead to seal failure.

[0034] The adjustment assembly includes a screw 86 and a knob 87;

[0035] The sealing shell 85 has a screw 86 internally threadedly connected to it. The screw 86 is rotatably connected to the piston plate 88, and a knob 87 is fixedly connected to the lower end of the screw 86.

[0036] For example, rotating the knob 87 drives the screw 86 to rotate, adjusting the height of the piston plate 88 through threaded transmission. The change in the position of the piston plate 88 alters the effective volume of the oil inside the sealing shell 85, thereby adjusting the preload of the spring 89 and achieving precise control of the oil outlet pressure. The screw 86 and the piston plate 88 are connected by a bearing to reduce frictional resistance and improve adjustment sensitivity. The knob 87 is designed with anti-slip textures for easy manual operation.

[0037] A hexagonal block 2 is fixedly connected to the outside of mounting tube 1, and mounting tube 3 is threadedly connected to the inside of mounting tube 1.

[0038] For example, the installation tube 1 is designed with a hexagonal block 2 on the outside, which facilitates installation or disassembly with tools such as wrenches, improving the ease of operation. The outer diameter of the installation tube 2 3 matches the inner diameter of the installation tube 1, and quick assembly is achieved through threaded connection.

[0039] Hexagonal block 2 4 is fixedly connected to the outside of mounting tube 2 3, and hexagonal block 2 4 is in contact with mounting tube 1 and hexagonal block 2 respectively.

[0040] For example, the installation tube 2 3 is designed with a hexagonal block 2 4 on the outside, which facilitates installation or disassembly using tools such as wrenches, thereby improving the ease of operation.

[0041] The internal fixed connection of the installation tube 1 has a limiting ring 5.

[0042] For example, the limiting ring 5 limits the sealing ring 6.

[0043] A sealing ring 6 is in contact with the side wall of the limiting ring 5, and the sealing ring 6 is in contact with the mounting tube 3.

[0044] For example, the installation tube 1 fits into the sealing ring 6, and the sealing ring 6 is compressed by the pre-tightening force to form a static seal. The sealing ring 6 is made of fluororubber, which is oil-resistant and high-temperature resistant, and is suitable for the long-term operation environment of the lawnmower. The cross-section of the sealing ring 6 is designed as an O-shape, which fills the gap between the installation tube 1 and the installation tube 2 through elastic deformation to ensure no leakage.

[0045] Working principle: Installation tube 2 3 is installed inside installation tube 1 by thread. Installation tube 2 3 contacts sealing ring 6 and is pressed against sealing ring 6 by limiting ring 5, so that sealing ring 6 can seal the connection between installation tube 1 and installation tube 2 3.

[0046] When the oil pressure inside the installation pipe 1 suddenly increases, the pressure on the sealing block 81 increases, and the spring 89 is compressed. If the pressure is greater than the force required for the spring 89 to deform, the spring 89 will deform and shorten downwards. This causes the sealing block 81 to move downwards and not contact the oil outlet 7. At this time, the oil inside the installation pipe 1 will enter the interior of the sealing shell 85 through the oil outlet 7 under pressure. When the pressure inside the installation pipe 1 returns to normal, the spring 89 will return to its original position, so that the sealing block 81 completely blocks the interior of the oil outlet 7, preventing oil leakage at the connection between the installation pipe 1 and the installation pipe 2 3 due to sudden excessive pressure inside the pipeline.

[0047] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stamped oil circuit leak-proof joint device for a lawnmower, characterized in that, include: Installation pipe 1 (1), an oil outlet hole (7) is provided inside the installation pipe 1 (1), and an oil outlet mechanism (8) for reducing oil pressure is provided on the installation pipe 1 (1); The oil outlet mechanism (8) includes a sealing block (81), a lifting plate (82), a sealing shell (85), a piston plate (88), a spring (89), and an oil outlet pipe (810); Among them, a sealing block (81) is slidably connected inside the oil outlet hole (7), a lifting plate (82) is fixedly connected to the lower end of the sealing block (81), a sealing shell (85) is fixedly connected to the lower end of the installation pipe (1), a piston plate (88) is in contact inside the sealing shell (85), a spring (89) is provided at the lower end of the lifting plate (82), an oil outlet pipe (810) is fixedly connected inside the sealing shell (85), and an adjustment component for adjusting the height of the piston plate (88) is provided inside the sealing shell (85).

2. The lawnmower stamped oil circuit leak-proof joint device according to claim 1, characterized in that, Two symmetrically distributed sliders (83) are fixedly connected to the outside of the lifting plate (82), and the two sliders (83) are in contact with the mounting tube (1) and the sealing shell (85) respectively.

3. The lawnmower stamped oil circuit leak-proof joint device according to claim 2, characterized in that, Two guide rails (84) are slidably connected to the outer sides of the two sliders (83), and the multiple guide rails (84) are slidably connected to the sealing shell (85).

4. The lawnmower stamped oil circuit leak-proof joint device according to claim 1, characterized in that, The adjustment assembly includes a screw (86) and a knob (87); The sealing shell (85) is internally threaded with a screw (86), which is rotatably connected to the piston plate (88). A knob (87) is fixedly connected to the lower end of the screw (86).

5. A lawnmower stamped oil circuit leak-proof joint device according to claim 2, characterized in that, A hexagonal block (2) is fixedly connected to the outside of the first mounting tube (1), and a second mounting tube (3) is threadedly connected to the inside of the first mounting tube (1).

6. A lawnmower stamped oil circuit leak-proof joint device according to claim 5, characterized in that, Hexagonal block 2 (4) is fixedly connected to the outside of the second mounting tube (3), and the second mounting tube (4) is in contact with the first mounting tube (1) and the first mounting tube (2) respectively.

7. A lawnmower stamped oil circuit leak-proof joint device according to claim 6, characterized in that, The internal fixed connection of the installation tube (1) is limited by a limiting ring (5).

8. A lawnmower stamped oil circuit leak-proof joint device according to claim 7, characterized in that, The side wall of the limiting ring (5) is in contact with a sealing ring (6), and the sealing ring (6) is in contact with the mounting tube (3).

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