Hydraulic cylinder with breathing cooling device and hoist thereof

Abstract

The utility model provides a hydraulic cylinder with a breathing cooling device and a hoist thereof, the hydraulic cylinder with the breathing cooling device comprises a cylinder body, and the bottom of the cylinder body is provided with a displacement sensor; a protective shell is mounted at the bottom of the cylinder body and covers the head of the displacement sensor, and the protective shell is in non-sealing connection with the cylinder body; a cotton rope is arranged in the protective shell, one end of the cotton rope is located in the protective shell and freely droops, and the other end of the cotton rope is inserted below the liquid level of a river channel. A through hole is formed in one side of the protective shell, a flexible rubber plate is plugged on the through hole, and a ventilation seam penetrating through the two sides of the rubber plate is formed in the rubber plate. When the temperature in the protective shell rises, the air pressure in the protective shell rises, the rubber plate expands outwards, the ventilation seams become large, and hot air is exhausted from the ventilation seams. Meanwhile, water in the protective shell and water on the cotton ropes absorb heat and evaporate into water vapor, lost air pressure in the protective shell is supplemented, and therefore the water vapor is continuously discharged outwards from the ventilation seams, and the purpose of cooling the interior of the protective shell is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hoists, in particular to a hydraulic cylinder with a breathing cooling device and a hoist thereof. Background Technique

[0002] The gate of a hydraulic hoist is driven by a hydraulic cylinder to achieve a certain amplitude of closing or opening. To improve the accuracy of the opening amplitude of the gate, a displacement sensor is generally installed in the hydraulic cylinder to control the extension length of the piston rod.

[0003] The head of the displacement sensor is installed outside the cylinder block base, and the displacement wire is inserted into the piston rod. The head of the displacement sensor is exposed outdoors and is easily damaged due to environmental factors or external force collisions. Therefore, a protective housing is generally provided outside the head of the displacement sensor.

[0004] Since a closed cavity is formed inside the protective housing, and the circuit board and electrical components are all arranged inside the head of the displacement sensor, when the displacement sensor works, the heat dissipated by the circuit board and electrical components is difficult to be dissipated in time, resulting in a gradual increase in the temperature inside the protective housing. Especially in summer, the temperature inside the protective housing is higher, which easily causes the displacement sensor to be damaged. Content of the Utility Model

[0005] To solve the technical problems in the background technique, the utility model discloses a hydraulic cylinder with a breathing cooling device and a hoist thereof.

[0006] The utility model provides a hydraulic cylinder with a breathing cooling device, which includes a cylinder block, at the bottom of which a displacement sensor is installed; a protective housing is installed at the bottom of the cylinder block to cover the head of the displacement sensor, and the protective housing is non-sealedly connected to the cylinder block; a cotton rope is arranged inside the protective housing, one end of which is located inside the protective housing and freely hangs down, and the other end is inserted below the liquid level of the river channel.

[0007] One side of the protective housing is provided with a through hole, and a flexible rubber plate is plugged on this through hole, and the rubber plate is provided with a breathable slit penetrating through both sides.

[0008] Since one end of the cotton rope is located in the river water, the cotton rope will adsorb water and reach a saturated state; since the cotton rope freely hangs down inside the protective housing, water droplets will drip into the protective housing and overflow to the outside from the connection between the protective housing and the cylinder block, only making the bottom of the inner cavity of the protective housing in a wet state; when the displacement sensor is not working, both sides of the breathable slit are connected and sealed; when the temperature inside the protective housing rises, the air pressure inside the protective housing will rise, the rubber plate will expand outwards, causing the breathable slit to become larger, and the hot air will be discharged from the breathable slit; at the same time, the water inside the protective housing and the water on the cotton rope absorb heat and evaporate into water vapor, supplementing the air pressure lost inside the protective housing, so that the water vapor is continuously discharged outwards from the breathable slit, achieving the purpose of cooling inside the protective housing.

[0009] To protect the cotton rope from damage, a further improvement is that the cotton rope is inserted into the hose.

[0010] To facilitate the disassembly and assembly of the hose, a further design is that a hoop is installed on one side of the protective shell, and the hose is fixed by the clamping method, causing the hose to deform and generating pressure on the cotton rope.

[0011] To facilitate the disassembly and assembly of the rubber plate, a further design is that a U-shaped groove is provided on the side of the rubber plate; the U-shaped groove is clamped to the hole wall of the through hole.

[0012] When the temperature drops, the air pressure in the protective shell decreases, and the rubber plate will be in a state of arching towards the inside of the protective shell for a long time, and the air permeable seam will also be in an open state. Based on this, a further improvement is that after the rubber plate is installed, it arches outwards. With this setting, when the air pressure in the protective shell increases, the rubber plate expands outwards and the air permeable seam opens; when the air pressure in the protective shell decreases, the rubber plate is subjected to the pressure of the outside air, and the direction of this pressure is opposite to the direction in which the rubber plate arches, so it will be resisted by the rubber plate, preventing the rubber plate from arching towards the inside of the protective shell, and moreover, under the pressure of the outside air, a pressure is generated between the two walls of the air permeable seam, improving the sealing performance.

[0013] Since the rubber plate is flexible, its arching direction can be easily changed by an external force. Based on this, a further improvement is that a spring piece is also provided inside the rubber plate; the initial state of the spring piece arches towards the outside of the protective shell.

[0014] The present utility model also provides a hoist and a hydraulic cylinder with a breathing cooling device. In this way, the hoist can operate continuously and stably, and the cooling device of the displacement sensor has a simple structure and low cost. Description of the Drawings

[0015] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0016] Figure 1 is the front view of the present utility model, with a partial cross-section;

[0017] Figure 2 is Figure 1 the enlarged view of part A in

[0018] Figure 3 is Figure 1 the enlarged view of part A in

[0019] In the figure: 1, cylinder block; 2, displacement sensor; 3, protective shell; 4, cotton rope; 5, rubber plate; 6, air permeable seam; 7, hose; 8, hoop; 9, spring piece; 51, U-shaped groove. Detailed implementation manners

[0020] The present utility model will be further described in detail below with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model.

[0021] Embodiment 1:

[0022] As Figure 1 shown, the present utility model discloses a hydraulic cylinder with a breathing cooling device, including a cylinder block 1, at the bottom of which a displacement sensor 2 is installed. A protective shell 3 is installed at the bottom of the cylinder block 1, covering the head of the displacement sensor 2. The protective shell 3 is fixedly connected to the cylinder block 1 by bolts, and the connection part is a hard contact, so it is a non-sealed connection.

[0023] As Figure 2 and Figure 3 shown, a cotton rope 4 is arranged in the protective shell 3. One end of the cotton rope 4 is located inside the protective shell 3 and freely hangs down, and the other end is inserted below the liquid level of the river channel. The cotton rope 4 is inserted into a hose 7, and both ends of the cotton rope 4 protrude from the hose 7. The purpose is that one end inserted into the river water is for better water absorption, and the end inserted into the protective shell 3 is for increasing the evaporation amount. A clamp 8 is installed on one side of the protective shell 3 to fix the hose 7 in a clamping manner, so as to facilitate the disassembly and assembly of the hose 7. When the clamp 8 clamps the hose 7, the hose 7 deforms and generates pressure on the cotton rope 4 to improve the position stability of the cotton rope 4.

[0024] A flexible rubber plate 5 is installed on the protective shell 3. The rubber plate 5 is provided with air-permeable slits 6 penetrating both sides. The specific installation structure is as follows: A through hole is also provided on one side of the protective shell 3; a U-shaped groove 51 is provided on the side of the rubber plate 5; the U-shaped groove 51 is clamped to the hole wall of the through hole to block the through hole. The setting of the U-shaped groove 51 can not only realize the installation and positioning of the rubber plate 5, but also facilitate the disassembly and assembly of the rubber plate 5.

[0025] Since one end of the cotton rope 4 is located in the river water, the cotton rope 4 will adsorb water and reach a saturated state; since the cotton rope 4 freely hangs down inside the protective shell 3, water droplets will drip into the protective shell 3 and overflow to the outside from the connection part between the protective shell 3 and the cylinder block 1, only making the bottom of the inner cavity of the protective shell 3 in a wet state; when the displacement sensor 2 is not working, both sides of the air-permeable slit 6 are connected and sealed; when the temperature inside the protective shell 3 rises, the air pressure inside the protective shell 3 will increase, the rubber plate 5 will expand outwards, resulting in the enlargement of the air-permeable slit 6, and hot air will be discharged from the air-permeable slit 6; at the same time, the water inside the protective shell 3 and the water on the cotton rope 4 absorb heat and evaporate into water vapor to supplement the air pressure lost inside the protective shell 3, so that the water vapor continuously discharges outwards from the air-permeable slit 6, achieving the purpose of cooling inside the protective shell 3.

[0026] After the rubber plate 5 is installed, it arches outward. With this arrangement, when the air pressure inside the protective shell 3 increases, the rubber plate 5 expands outward and the ventilation slit 6 opens; when the air pressure inside the protective shell 3 decreases, the rubber plate 5 is subjected to the pressure of the outside air, and the direction of this pressure is opposite to the direction in which the rubber plate 5 arches. Therefore, it will be resisted by the rubber plate 5, so that the rubber plate 5 will not arch inward towards the protective shell 3, and moreover, a pressure is generated between the two walls of the ventilation slit 6 under the pressure of the outside air, improving the sealing performance.

[0027] Moreover, a spring piece 9 is provided inside the rubber plate 5; the initial state of the spring piece 9 arches outward towards the outside of the protective shell 3. This can improve the stability of the arching direction of the rubber plate 5.

[0028] Embodiment 2:

[0029] The present utility model also discloses a hoist, which includes a hydraulic cylinder with a breathing cooling device in Embodiment 1. In this way, the hoist can operate continuously and stably, and the cooling device of the displacement sensor has a simple structure and low cost.

[0030] Inspired by the above ideal embodiments of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A hydraulic cylinder with a breathing cooling device, comprising a cylinder block (1), at the bottom of which a displacement sensor (2) is installed; a protective shell (3) is installed at the bottom of the cylinder block (1), covering the head of the displacement sensor (2), and characterized in that: The protective shell (3) is non-sealingly connected to the cylinder block (1); A cotton rope (4) is arranged in the protective shell (3), one end of which is located inside the protective shell (3) and freely hangs down, and the other end is inserted below the liquid level of the river; One side of the protective shell (3) is provided with a through hole, and a flexible rubber plate (5) is sealed on this through hole. The rubber plate (5) is provided with a breathable slit (6) penetrating both sides.

2. The hydraulic cylinder with a breathing cooling device according to claim 1, characterized in that: The cotton rope (4) is inserted into a hose (7).

3. The hydraulic cylinder with a breathing cooling device according to claim 2, characterized in that: A hoop (8) is installed on one side of the protective shell (3), and the hose (7) is fixed by a clamping method, so that the hose (7) is deformed and a pressure is generated on the cotton rope (4).

4. A hydraulic cylinder with a breathing cooling device according to claim 1, characterized in that: A U-shaped groove (51) is formed on the side of the rubber plate (5); The U-shaped groove (51) is clamped to the hole wall of the through hole.

5. A hydraulic cylinder with a breathing cooling device according to claim 4, characterized in that: After the rubber plate (5) is installed, it arches outwards.

6. The hydraulic cylinder with a breathing cooling device according to claim 5, characterized in that: A shrapnel (9) is further arranged in the rubber plate (5); In the initial state, the shrapnel (9) arches outwards towards the outside of the protective shell (3).

7. A hoist, characterized in that: A hydraulic cylinder with a breathing cooling device according to any one of claims 1-6.

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