Dustproof heat dissipation device for hydraulic oil cylinder

Abstract

The utility model relates to the technical field of hydraulic oil cylinders, and discloses a dustproof heat dissipation device for a hydraulic oil cylinder, the dustproof heat dissipation device comprises a hydraulic cylinder body, the hydraulic cylinder body is sleeved with a protective cover, the protective cover comprises a main cover body arranged outside the hydraulic cylinder body in a sleeving mode and an auxiliary cover body arranged at the joint of the hydraulic cylinder body and a piston rod in a sleeving mode, and the main cover body and the auxiliary cover body are connected through threads; a fixing sleeve used for fixing a hydraulic cylinder body is coaxially arranged in the main cover body, a cavity used for cooling water to circulate is formed between the main cover body and the fixing sleeve, a positioning piece used for supporting the main cover body and the fixing sleeve is arranged in the cavity, and a water inlet and a water outlet are formed in the outer side wall of the main cover body and communicated with the cavity. The fixing sleeve comprises two semi-ring sleeves which are coaxially arranged, and the two semi-ring sleeves are detachably arranged. The effect of prolonging the service life of the hydraulic oil cylinder is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of hydraulic cylinders, and in particular to a dust-proof and heat-dissipating device for a hydraulic cylinder. Background Art

[0002] Hydraulic cylinder, also known as hydraulic cylinder or oil cylinder, is the core actuator in the hydraulic system. It acts on the plunger pump or piston through high-pressure oil, and uses the effective action area to generate thrust or pull force, thereby driving the mechanical equipment to work. The output force of the hydraulic cylinder is proportional to the effective area of ​​the piston and the pressure difference on both sides, which enables the hydraulic cylinder to provide a large output force and high stability. Therefore, hydraulic cylinders are widely used in various industrial fields, such as machinery manufacturing, metallurgy, chemical industry, etc.

[0003] The piston rod of the hydraulic cylinder is prone to introduce dust and impurities during its reciprocating motion. These particles may enter the cylinder, causing wear of the seals and affecting the cleanliness and efficiency of the hydraulic system. In addition, when the hydraulic cylinder is working, a large amount of heat will be generated due to internal friction and compression of the hydraulic oil. If the heat is not dissipated in time, the oil temperature may rise, affecting the oil performance, such as decreased viscosity and accelerated aging of seals.

[0004] A Chinese patent with announcement number CN220037131U discloses a dustproof and heat dissipation device for a hydraulic cylinder. The hot air generated by the hydraulic cylinder body is dispersed outward. Part of the hot air is transmitted to one end of the cavity and dissipated outward, and the other part of the hot air is transmitted to the slot, and the slot is then transmitted to the transmission station. Finally, the circulation channel flows the hot air to the heat dissipation channel, and so on. The hot air is rotated and flowed, so that the hot air rotates in the fixed part and rotates to the through hole. The cooling liquid is injected into the water inlet and flows in the circulation station to physically cool the surface of the hydraulic cylinder body.

[0005] The dustproof and heat dissipation device mentioned above will physically dissipate heat for the hydraulic cylinder by setting a protective cover. In order to fix the hydraulic cylinder body, the fixing parts in the protective cover not only need to be close to the hydraulic cylinder body, but also need to have a large friction between the protective cover and the hydraulic cylinder body to prevent the hydraulic cylinder from rotating in the protective cover. When the hydraulic cylinder body needs to be repaired and maintained, it is necessary to pull out the hydraulic cylinder body from the connection between cover body 1 and cover body 2. This device is not convenient for removing the hydraulic cylinder body from the protective cover. If it is forcibly removed, it will cause wear to the hydraulic cylinder body, thereby reducing the service life of the hydraulic cylinder. Utility Model Content

[0006] In order to increase the service life of the hydraulic cylinder, the present application provides a dust-proof and heat-dissipating device for the hydraulic cylinder.

[0007] The dust-proof heat dissipation device for a hydraulic cylinder provided in the present application adopts the following technical solution:

[0008] A dustproof and heat dissipation device for a hydraulic cylinder comprises a hydraulic cylinder body, wherein a protective cover is arranged on the outer shell of the hydraulic cylinder body, wherein the protective cover comprises a main cover body sleeved on the outer shell of the hydraulic cylinder body and an auxiliary cover body sleeved on the connection between the hydraulic cylinder body and the piston rod, wherein the main cover body and the auxiliary cover body are connected by threads, a fixing sleeve for fixing the hydraulic cylinder body is coaxially arranged in the main cover body, and a cavity for passing cooling water is arranged between the main cover body and the fixing sleeve, a positioning piece for supporting the main cover body and the fixing sleeve is arranged in the cavity, a water inlet and an outlet are arranged on the outer side wall of the main cover body connecting the cavity, and the fixing sleeve comprises two coaxially arranged semi-ring sleeves, and the two semi-ring sleeves are detachably arranged.

[0009] By adopting the above technical solution, before using the dustproof heat dissipation device, first place the hydraulic cylinder body in the fixed sleeve, fasten the hydraulic cylinder body through the detachable connection of the two half-ring sleeves, and then fix the fixed sleeve that fixes the hydraulic cylinder body in the main cover. When the hydraulic cylinder body is in normal working state, use the external cooling water circulation system to send cold water from the water inlet into the cavity. The cooling water flows in the cavity and takes away the heat generated by the hydraulic cylinder body. The water that absorbs the heat is discharged from the water outlet, thereby achieving effective heat dissipation of the hydraulic cylinder body. While maintaining the distance between the main cover body and the fixed sleeve, the positioning piece also increases the heat dissipation area, further improving the heat dissipation effect.

[0010] Optionally, a hinge is provided on one side where the two semi-ring sleeves are connected to each other, and a buckle is provided on the other side where the two semi-ring sleeves are connected to each other, and a plurality of buckles are distributed along the axial direction of the semi-ring sleeves.

[0011] By adopting the above technical solution, a row of buckles is used to not only achieve a stable connection between the two half-rings, but also improve the convenience of disassembly and assembly of the hydraulic cylinder body, thereby improving the work efficiency of maintenance personnel and reducing the manufacturing cost of the device.

[0012] Optionally, the positioning member is a plurality of arc-shaped heat sinks evenly distributed on the outer peripheral wall of the semi-annular sleeve. When the two semi-annular sleeves are installed in combination, the plurality of arc-shaped heat sinks are connected to form spiral heat sinks and divide the cavity into spiral channels.

[0013] By adopting the above technical solution, the arrangement of the spiral heat sink increases the flow path of the cooling water in the channel, thereby improving the heat dissipation effect.

[0014] Optionally, a thread groove is provided on the inner wall of the main cover body corresponding to the spiral heat sink, the end of the spiral heat sink away from the fixing sleeve is inserted into the thread groove, and the spiral heat sink and the thread groove are rotationally matched.

[0015] By adopting the above technical solution, the spiral heat sink can not only realize the positioning between the main cover and the fixed sleeve, but also fine-tune the height of the fixed sleeve to a certain extent to adapt to the hydraulic cylinders with different installation requirements, thereby improving the adaptability of the dustproof heat dissipation device.

[0016] Optionally, a plurality of spoiler columns are arranged on the outer side wall of the fixed sleeve, and two adjacent spoiler columns are staggered along the guide of the spiral channel.

[0017] By adopting the above technical solution, when cooling water flows through the spiral channel, the spoiler column can effectively disturb the water flow, increase the contact area and time between water and the heat sink, thereby further improving the heat dissipation effect.

[0018] Optionally, the auxiliary cover body includes an annular plate sleeved outside the piston rod and a sealing sleeve arranged on the annular plate, and the side of the annular plate away from the sealing sleeve is connected to the top of the main cover body, and the sealing sleeve is sleeved on the piston rod and slidingly seals with the piston rod.

[0019] By adopting the above technical solution, the side of the annular plate away from the sealing sleeve is connected to the top of the main cover body, ensuring the overall sealing. The sealing sleeve is tightly mounted on the piston rod and realizes sliding sealing cooperation with the piston rod, which not only ensures the free movement of the piston rod, but also effectively prevents dust and debris from entering the hydraulic cylinder.

[0020] Optionally, a wear-resistant layer is provided on the inner wall of the sealing sleeve.

[0021] By adopting the above technical solution, the wear-resistant layer is made of a material with high wear resistance, which can effectively resist the friction generated by the piston rod during movement and extend the service life of the sealing sleeve.

[0022] Optionally, anti-slip patterns are provided on the inner wall of the fixing sleeve.

[0023] By adopting the above technical solution, the anti-skid pattern can increase the friction between the fixed sleeve and the hydraulic cylinder body, preventing the hydraulic cylinder body from sliding or shifting in the fixed sleeve, thereby ensuring the stability and reliability of the entire dustproof and heat dissipation device.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] 1. Before using the dustproof heat dissipation device, first place the hydraulic cylinder body in the fixed sleeve, fasten the hydraulic cylinder body through the detachable connection of the two half-ring sleeves, and then fix the fixed sleeve that has fixed the hydraulic cylinder body in the main cover. When the hydraulic cylinder body is in normal working state, use the external cooling water circulation system to send cold water into the cavity from the water inlet. The cooling water flows in the cavity and takes away the heat generated by the hydraulic cylinder body. The water that absorbs the heat is discharged from the water outlet, thereby achieving effective heat dissipation of the hydraulic cylinder body. While maintaining the distance between the main cover and the fixed sleeve, the positioning piece also increases the heat dissipation area, further improving the heat dissipation effect;

[0026] 2. The use of a row of buckles not only achieves a stable connection between the two half rings, but also improves the convenience of disassembly and assembly of the hydraulic cylinder body, improves the work efficiency of maintenance personnel and reduces the manufacturing cost of the device;

[0027] 3. The positioning members are a plurality of arc-shaped heat sinks evenly distributed on the outer peripheral wall of the semi-annular sleeve. When the two semi-annular sleeves are combined and installed, the plurality of arc-shaped heat sinks are butted together to form spiral heat sinks, and the cavity is divided into spiral channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a cross-sectional view of the overall structure of an embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of the structure when the main cover body is unfolded in the embodiment of the present application.

[0031] Figure 4 It is a schematic diagram showing the position of the hinge on the main cover body in the embodiment of the present application.

[0032] Description of reference numerals:

[0033] 1. Hydraulic cylinder body; 2. Protective cover; 21. Main cover body; 211. Water inlet; 212. Water outlet; 213. Threaded groove; 22. Auxiliary cover body; 221. Ring plate; 222. Sealing sleeve; 2221. Wear-resistant layer; 3. Fixed sleeve; 31. Semi-ring sleeve; 311. Sealing groove; 32. Anti-slip pattern; 4. Positioning piece; 41. Arc-shaped heat sink; 5. Hinge; 6. Buckle; 7. Seal; 71. Sealing strip; 8. Spiral heat sink; 81. Spiral channel; 9. Spoiler column. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The embodiment of the present application discloses a dust-proof and heat-dissipating device for a hydraulic cylinder.

[0036] Reference Figure 1 and Figure 2 A dustproof and heat dissipation device for a hydraulic cylinder includes a hydraulic cylinder body 1, a protective cover 2 is arranged outside the hydraulic cylinder body 1, and the protective cover 2 includes a main cover body 21 and an auxiliary cover body 22. The main cover body 21 is sleeved outside the hydraulic cylinder body 1, and the auxiliary cover body 22 is connected to the top of the open part of the main cover body 21 by threads, and is sleeved at the connection between the hydraulic cylinder body 1 and the piston rod. A fixing sleeve 3 is coaxially arranged in the main cover body 21, and a cavity is left between the main cover body 21 and the fixing sleeve 3. A water inlet 211 and a water outlet 212 are opened on the outer wall of the main cover body 21 to communicate with the cavity. The water inlet and the water outlet are connected to an external cooling system, and a positioning member 4 is arranged between the main cover body 21 and the fixing sleeve 3.

[0037] Reference Figure 1 and Figure 2 Before using the dustproof heat dissipation device, the hydraulic cylinder body 1 is first fixedly placed in the fixing sleeve 3, and then the fixing sleeve 3 with the hydraulic cylinder body 1 fixed is fixedly placed in the main cover 21 through the positioning member 4. When the hydraulic cylinder body 1 is in a normal working state, the external cooling water circulation system is used to send cold water into the cavity from the water inlet 211. The cooling water flows in the cavity and takes away the heat generated by the hydraulic cylinder body 1. The water that absorbs the heat is discharged from the water outlet 212.

[0038] Reference Figure 2 The auxiliary cover body 22 includes an annular plate 221 and a sealing sleeve 222. The side of the annular plate 221 away from the sealing sleeve 222 is connected to the top of the main cover body 21 by a thread. The sealing sleeve 222 is integrally formed on the top of the annular plate 221 and is sleeved on the piston rod. A wear-resistant layer 2221 is fixedly provided on the inner wall of the sealing sleeve 222. The wear-resistant layer 2221 fits the piston rod, and the wear-resistant layer 2221 and the piston rod are slidingly sealed.

[0039] Reference Figure 3 and Figure 4 The fixed sleeve 3 includes two semi-ring sleeves 31, and a hinge 5 is fixedly arranged on one side of the two semi-ring sleeves 31 opposite to each other, and a buckle 6 is fixedly arranged on the other side of the two semi-ring sleeves 31 opposite to each other, and there are multiple buckles 6 distributed along the axial direction of the semi-ring sleeves 31, and three buckles are used as an example in this embodiment. A sealing strip 7 is arranged on the opposite side walls of the two semi-ring sleeves 31, and the sealing strip 7 is fixedly arranged on the side wall of one of the semi-ring sleeves 31 along the axial direction of the semi-ring sleeves 31. A sealing groove 311 is correspondingly opened on the semi-ring sleeve 31 opposite to the sealing strip 7, and the sealing strip 7 is plugged and matched with the sealing groove 311.

[0040] Reference Figure 2 and Figure 3The positioning member 4 in this embodiment is an arc-shaped heat sink 41, which is fixedly arranged on the outer peripheral wall of the semi-annular sleeve 31 perpendicular to the axial direction of the semi-annular sleeve 31, and a plurality of arc-shaped heat sinks 41 are evenly distributed on the outer peripheral wall of the semi-annular sleeve 31. When the two semi-annular sleeves 31 are installed and combined, a plurality of arc-shaped heat sinks 41 are connected to form a spiral heat sink 8, and the cavity is divided into a spiral channel 81.

[0041] Reference Figure 2 and Figure 3 A thread groove 213 is provided on the inner wall of the main cover body 21 corresponding to the spiral heat sink 8 , the spiral heat sink 8 and the thread groove 213 are rotationally matched, and the end of the spiral heat sink 8 away from the fixing sleeve 3 is inserted into the thread groove 213 .

[0042] Reference Figure 2 and Figure 3 In order to improve the heat dissipation effect of the device on the hydraulic cylinder body 1, a number of spoiler columns 9 are fixedly arranged on the outer wall of the fixed sleeve 3. The spoiler columns 9 are located in the spiral channel 81 and are arranged perpendicular to the axial direction of the fixed sleeve 3, and two adjacent spoiler columns 9 are staggered along the guide of the spiral channel 81.

[0043] Reference Figure 4 In order to improve the fixing effect of the fixing sleeve 3 on the hydraulic cylinder body 1, an anti-slip pattern 32 is fixedly provided on the inner wall of the fixing sleeve 3.

[0044] The implementation principle of a dustproof heat dissipation device for a hydraulic oil cylinder in the embodiment of the present application is as follows: before using the dustproof heat dissipation device, first fix the hydraulic cylinder body 1 in the fixing sleeve 3, and through the hinged opening and closing of the two half ring sleeves 31, fit the hydraulic cylinder body 1 against the anti-slip groove 32, and use a row of buckles 6 to tightly fix the hydraulic cylinder body 1, and then fix the fixing sleeve 3 with the hydraulic cylinder body 1 fixed in the main cover body 21 through the positioning member 4. The sealing sleeve 222 of the auxiliary cover body 22 is arranged on the piston rod and is installed and connected with the main cover body 21 through threads.

[0045] When the hydraulic cylinder body 1 is in normal working state, an external cooling water circulation system is used to send cold water from the water inlet 211 into the spiral channel 81. The cooling water flows along the spiral guide in the spiral channel 81, and continuously hits the spoiler column 9 during the flow process, exchanges heat with the side wall of the fixed sleeve 3, and takes away the heat generated by the hydraulic cylinder body 1 that is in contact with the fixed sleeve 3. The water after absorbing the heat is discharged from the water outlet 212 and flows into the external cooling water circulation system for cooling. The cooled cooling water enters the spiral channel 81 from the water inlet 211 again to dissipate heat for the hydraulic cylinder body 1.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dustproof and heat dissipation device for a hydraulic cylinder, characterized in that: The invention comprises a hydraulic cylinder body (1), wherein the outer cover of the hydraulic cylinder body (1) is provided with a protective cover (2), wherein the protective cover (2) comprises a main cover body (21) sleeved on the outside of the hydraulic cylinder body (1) and an auxiliary cover body (22) sleeved on the connection between the hydraulic cylinder body (1) and a piston rod, wherein the main cover body (21) and the auxiliary cover body (22) are connected by threads, wherein a fixing sleeve (3) for fixing the hydraulic cylinder body (1) is coaxially arranged in the main cover body (21), and a cavity for passing cooling water is arranged between the main cover body (21) and the fixing sleeve (3), wherein a positioning member (4) for supporting the main cover body (21) and the fixing sleeve (3) is arranged in the cavity, and a water inlet and outlet (212) are provided on the outer wall of the main cover body (21) to communicate with the cavity, and the fixing sleeve (3) comprises two coaxially arranged semi-annular sleeves (31), and the two semi-annular sleeves (31) are detachably arranged.

2. A dustproof and heat dissipating device for a hydraulic cylinder according to claim 1, characterized in that: A hinge (5) is commonly provided on one side where the two semi-annular sleeves (31) are connected to each other, and a buckle (6) is provided on the other side where the two semi-annular sleeves (31) are connected to each other. A plurality of buckles (6) are distributed along the axial direction of the semi-annular sleeves (31).

3. A dustproof and heat dissipating device for a hydraulic cylinder according to claim 1, characterized in that: The positioning member (4) is a plurality of arc-shaped heat sinks (41) evenly distributed on the outer peripheral wall of the semi-annular sleeve (31). When two semi-annular sleeves (31) are combined and installed, the plurality of arc-shaped heat sinks (41) are butted together to form a spiral heat sink (8), and the cavity is divided into a spiral channel (81).

4. A dustproof and heat dissipating device for a hydraulic cylinder according to claim 3, characterized in that: A thread groove (213) is provided on the inner wall of the main cover body (21) corresponding to the spiral heat sink (8); the end of the spiral heat sink (8) away from the fixing sleeve (3) is inserted into the thread groove (213), and the spiral heat sink (8) and the thread groove (213) are rotationally matched.

5. The dust-proof heat dissipation device for a hydraulic cylinder according to claim 3, characterized in that: A number of spoiler columns (9) are arranged on the outer side wall of the fixed sleeve (3), and two adjacent spoiler columns (9) are arranged alternately along the guide of the spiral channel (81).

6. A dustproof and heat dissipating device for a hydraulic cylinder according to claim 1, characterized in that: The auxiliary cover body (22) comprises an annular plate (221) sleeved on the outside of the piston rod and a sealing sleeve (222) arranged on the annular plate (221); the side of the annular plate (221) away from the sealing sleeve (222) is connected to the top of the main cover body (21); the sealing sleeve (222) is sleeved on the piston rod and is in sliding sealing cooperation with the piston rod.

7. A dustproof and heat dissipating device for a hydraulic cylinder according to claim 6, characterized in that: A wear-resistant layer (2221) is provided on the inner wall of the sealing sleeve (222).

8. The dust-proof and heat-dissipating device for a hydraulic cylinder according to claim 1, characterized in that: The inner wall of the fixing sleeve (3) is provided with anti-slip grooves (32).

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