Cover plate assembly, hydraulic oil tank and hydraulic equipment

Abstract

The utility model discloses a cover plate assembly, a hydraulic oil tank and hydraulic equipment, the cover plate assembly is applied to the hydraulic oil tank, the cover plate assembly comprises a cover plate and an oil blocking piece, the cover plate is provided with an air hole, and the cover plate is used for being connected with a tank body of the hydraulic oil tank; an airflow channel is defined by the oil blocking piece, one end of the oil blocking piece is connected with the cover plate, the air holes communicate with the airflow channel and the outside, the oil blocking piece is used for stretching into the containing space of the box body, and the end, away from the cover plate, of the airflow channel communicates with the containing space. According to the hydraulic oil tank, the cover plate and the oil blocking piece are arranged, the cover plate is provided with the air hole and connected with the tank body of the hydraulic oil tank, and the oil blocking piece encloses the airflow channel and extends into the containing space of the tank body, so that hydraulic oil can be prevented from entering the airflow channel and overflowing through the air hole.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic equipment, in particular to a cover plate assembly, a hydraulic oil tank and hydraulic equipment. Background Art

[0002] The hydraulic oil tank is a basic tool for storing hydraulic oil in the forklift hydraulic system, and requires frequent input and output of hydraulic oil and air.

[0003] Since the viscosity of hydraulic oil is relatively high, and when the hydraulic oil tank is installed on a moving mechanical part, the movement of the mechanical part will cause turbulence in the oil tank. The turbulence in the oil tank will cause the hydraulic oil to move in the oil tank, which may easily cause the hydraulic oil to overflow from the air vents in the oil tank. Utility Model Content

[0004] The utility model aims to provide a cover plate assembly, a hydraulic oil tank and a hydraulic device, so as to solve the problem that the hydraulic oil may overflow from the oil tank.

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

[0006] In the first aspect, the utility model provides a cover plate assembly, which is applied to a hydraulic oil tank. The cover plate assembly includes a cover plate and an oil baffle, the cover plate is provided with an air vent, and the cover plate is used to be connected to the box body of the hydraulic oil tank; the oil baffle encloses an air flow channel, one end of the oil baffle is connected to the cover plate, the air vent connects the air flow channel with the outside world, the oil baffle is used to extend into the receiving space of the box body, and the end of the air flow channel away from the cover plate is used to be connected to the receiving space.

[0007] In one embodiment, the oil baffle comprises a cylinder and an oil baffle plate, both ends of the cylinder are open, one end of the cylinder is connected to the cover plate, the cylinder encloses an airflow cavity, the oil baffle plate is arranged on the inner wall of the cylinder, and divides the airflow cavity into the airflow channel.

[0008] In one embodiment, there are a plurality of oil baffles, and the plurality of oil baffles are arranged at staggered intervals in the axial direction of the cylinder, so that the air flow channel is serpentine.

[0009] In one embodiment, the oil baffle plate is provided with a plurality of small air holes.

[0010] In one embodiment, the cover plate assembly further includes an air filter, and the air filter is connected to the cover plate and communicated with the air vent.

[0011] In one embodiment, the cover plate assembly further includes a pipe joint, the pipe joint is passed through the air vent, and the pipe joint is connected to the air filter.

[0012] In one embodiment, the cover plate is further provided with a detection hole, which is communicated with the air flow channel, and the cover plate assembly further includes an air pressure sensor, which is communicated with the detection hole.

[0013] In a second aspect, the utility model further provides a hydraulic oil tank, comprising a tank body and a cover plate assembly as described in any one of the various embodiments of the first aspect, wherein the tank body has a receiving space, the cover plate is connected to the tank body, and the oil baffle extends into the receiving space.

[0014] In one embodiment, the hydraulic oil tank further includes an oil return pipe, an oil suction pipe and a partition, wherein the oil return pipe, the oil suction pipe and the partition are all connected to the tank body, and the partition is disposed between the oil return pipe and the oil suction pipe.

[0015] In one embodiment, the partition includes a first connecting plate and a second connecting plate, the second connecting plate is arranged opposite to the oil suction pipe, and the first connecting plate is connected to one end of the second connecting plate and extends away from the oil suction pipe.

[0016] In one embodiment, the box body further includes a bottom plate opposite to the cover plate, and the second connecting plate is closer to the bottom plate than the opening of the oil return pipe.

[0017] In one embodiment, the hydraulic oil tank further includes a detector, which is connected to the tank body and is used to detect the liquid level and / or temperature parameters in the tank body.

[0018] In a third aspect, the utility model further provides a hydraulic device, comprising a main body and a hydraulic oil tank as described in any one of the various embodiments of the second aspect, wherein the hydraulic oil tank is accommodated in the main body.

[0019] By setting a cover plate and an oil baffle, the cover plate is provided with an air vent and is connected to the box body of the hydraulic oil tank; the oil baffle encloses an air flow channel, one end of the oil baffle is connected to the cover plate, the air vent connects the air flow channel and the outside world, and the oil baffle is used to extend into the receiving space of the box body, which can prevent the hydraulic oil from overflowing through the air vent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1is a perspective view of a hydraulic oil tank of an embodiment;

[0022] Figure 2 is a cross-sectional view of a cover plate assembly of one embodiment;

[0023] Figure 3 is a perspective view of a cover assembly according to an embodiment.

[0024] Description of reference numerals:

[0025] 100-Hydraulic oil tank;

[0026] 10-box body, 11-accommodation space, 12-bottom plate, 13-top plate, 14-first side plate, 15-reinforcement plate;

[0027] 20-cover plate assembly, 21-cover plate, 211-air vent, 212-connecting hole, 213-detection hole, 22-oil baffle, 221-air flow channel, 222-cylinder, 223-oil baffle, 224-air vent, 225-first plate, 226-second plate, 23-fixing member, 24-air filter, 25-pipe joint, 251-installation channel, 26-air pressure sensor;

[0028] 30-Oil return pipe;

[0029] 40- oil suction pipe;

[0030] 50-separator, 51-first connecting plate, 52-second connecting plate;

[0031] 60-detector, 61-liquid level detector, 62-temperature detector;

[0032] 70-Oil drain switch;

[0033] 80-Fixed bracket. DETAILED DESCRIPTION

[0034] 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 of 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.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there can be a central component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there can be a central component at the same time.

[0036] Unless otherwise defined, all technical and scientific terms used in this utility model have the same meaning as those commonly understood by technicians in the technical field of this utility model. The terms used in the specification of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used in this utility model includes any and all combinations of one or more related listed items.

[0037] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0038] The present invention provides a hydraulic device, including a main body and a hydraulic oil tank in the present invention, wherein the hydraulic oil tank is accommodated in the main body. The hydraulic device may be a hydraulic transmission device, a hydraulic control device, a hydraulic auxiliary device, a hydraulic tool device, etc., and may specifically be a hydraulic pump, a shearing machine, a forklift, etc.

[0039] The hydraulic equipment can prevent the hydraulic oil from overflowing through the hydraulic oil tank by applying the hydraulic oil tank in the embodiment of the utility model.

[0040] Please refer to Figure 1 The embodiment of the utility model further provides a hydraulic oil tank 100, including a box body 10 and a cover assembly 20 in the embodiment of the utility model, the box body 10 has a receiving space, the cover assembly 20 is connected to the box body 10, and at least a part of the cover assembly 20 is received in the receiving space.

[0041] Optionally, the shape of the box body 10 can be cylindrical, prismatic, etc., without limitation.

[0042] Optional, such as Figure 1 As shown, the box body 10 includes a plurality of side panels and a bottom plate 12, and the plurality of side panels are connected to the bottom plate 12 and enclose a receiving space 11. The box body 10 is made of a material with high structural strength, and specifically can be a metal material, a high-strength plastic, etc., and the metal material is, for example, aluminum, aluminum alloy, magnesium alloy, iron and iron alloy, etc. The box body 10 can be an integrated structure, that is, the bottom plate 12 and the plurality of side panels are an integrated structure made by an integrated molding process, and the integrated molding process can specifically be stamping, casting, etc., without limitation. The box body 10 can also be a split structure, and the side panels and the bottom plate 12 can be connected and fixed by welding, bonding, clamping, screwing, etc.

[0043] Optionally, the wall thickness of the box body 10 at various locations may be substantially uniform, that is, the thickness of the plurality of side panels may be substantially uniform, and the thickness of the bottom panel 12 and the side panels may also be substantially the same.

[0044] The hydraulic oil tank 100 in the utility model is provided with a box body 10 and a cover assembly 20 in the embodiment of the utility model. The box body 10 has a receiving space 11. The cover assembly 20 is connected to the box body 10, and at least a part of the cover assembly 20 is received in the receiving space 11, which can prevent the hydraulic oil in the box body 10 from overflowing.

[0045] The cover plate assembly 20 in the embodiment of the utility model is described in detail below.

[0046] Please refer to Figure 1 and Figure 2 The utility model provides a cover plate assembly 20 , which is applied to a hydraulic oil tank 100 , and includes a cover plate 21 and an oil retaining member 22 .

[0047] Optionally, the cover plate 21 is provided with a vent hole 211, and the cover plate 21 is used to connect with the box body 10 of the hydraulic oil tank 100. The vent hole 211 can be square, circular, polygonal, etc., and there is no specific limitation.

[0048] Optionally, the cover plate 21 is connected to the box body 10, and the oil retaining member 22 extends into the receiving space 11. The connection between the cover plate 21 and the box body 10 can be bonding, clamping, screwing, etc., without limitation.

[0049] Optional, such as Figure 1 As shown, the box body 10 further includes a top plate 13, which closes the opening of the receiving space 11. The cover plate assembly 20 further includes a fixing member 23, the cover plate 21 is provided with a connecting hole 212, and the top plate 13 is provided with a fixing hole (not shown in the figure), and the fixing member 23 is sequentially connected with the connecting hole 212 and the fixing hole to connect and fix the cover plate 21 and the top plate 13.

[0050] Optionally, the fixing member 23 is a bolt. The cover plate 21 and the top plate 13 are connected by bolts to facilitate assembly and disassembly.

[0051] Optionally, there are multiple connection holes 212 , fixing holes and fixing members 23 , and the multiple connection holes 212 , fixing holes and fixing members 23 are arranged at intervals in the circumferential direction of the cover plate 21 .

[0052] Optionally, the oil baffle 22 encloses an airflow channel 221, one end of the oil baffle 22 is connected to the cover plate 21, the air vent 211 connects the airflow channel 221 with the outside, the oil baffle 22 is used to extend into the receiving space 11 of the box body 10, and the end of the airflow channel 221 away from the cover plate 21 is used to communicate with the receiving space 11.

[0053] Optionally, the oil retaining member 22 and the cover plate 21 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0054] The cover plate assembly 20 in the embodiment of the utility model is provided with a cover plate 21 and an oil baffle 22. The cover plate 21 is provided with an air vent 211 and is connected to the box body 10 of the hydraulic oil tank 100. The oil baffle 22 encloses an air flow channel 221. One end of the oil baffle 22 is connected to the cover plate 21. The air vent 211 connects the air flow channel 221 with the outside. The oil baffle 22 is used to extend into the receiving space 11 of the box body 10 to prevent the hydraulic oil from overflowing through the air vent 211.

[0055] Optional, such as Figure 1 As shown, the cover plate assembly 20 further includes an air filter 24 , which is connected to the cover plate 21 and communicates with the air vent 211 .

[0056] Optionally, the air filter 24 is a commonly used air filter 24 in the art.

[0057] The air filter 24 is an important component to keep the hydraulic oil in the oil tank clean. It can maintain the balance between the pressure in the oil tank and the atmospheric pressure, avoid cavitation in the hydraulic pump, and prevent pollutants from entering the oil tank, thereby extending the working cycle and service life of the hydraulic oil and components. Since the viscosity of the hydraulic oil is relatively high, and when the hydraulic oil tank 100 is installed on a moving mechanical part, the movement of the mechanical part will cause the oil tank to turbulent, and the turbulence of the oil tank will cause the hydraulic oil to move in the oil tank, which may easily cause the hydraulic oil to overflow from the oil tank into the air filter 24.

[0058] When the hydraulic oil repeatedly overflows and touches the air filter 24, it will affect the filtering effect of the air filter, shorten the service life of the air filter 24, reduce the cleanliness of the hydraulic oil tank 100, pollute the working environment of the hydraulic system, and waste hydraulic oil.

[0059] Therefore, by setting the cover plate assembly 20 also including an air filter 24, the air filter 24 is connected to the cover plate 21 and communicated with the air vent 211. When the hydraulic oil tank 100 inhales air from the outside through the air filter 24, the air filter 24 has the function of filtering the air, thereby preventing impurities in the air from entering the oil tank and contaminating the hydraulic oil; when the hydraulic oil flows back to the oil tank from the hydraulic system, the hydraulic oil tank 100 needs to exhale to the outside through the air filter 24, thereby ensuring the cleanliness of the air in the hydraulic oil tank 100 and maintaining the normal working environment of the hydraulic system.

[0060] Optional, such as Figure 1 and Figure 2 As shown, the cover plate assembly 20 further includes a pipe joint 25 , which is penetrated through the air vent 211 and connected to the air filter 24 .

[0061] Optionally, the specific shape of the pipe joint 25 is not limited, and it can be connected with the air vent 211 and the air filter 24.

[0062] Optionally, the pipe joint 25 connects the air flow channel 221 and the air filter 24 , one end of the pipe joint 25 extends into the air flow channel 221 , and the other end protrudes from the side of the cover plate 21 opposite to the oil baffle 22 . The pipe joint 25 is provided with an installation channel 251 , and the installation channel 251 is connected and fixed to the air filter 24 .

[0063] By configuring the cover plate assembly 20 to also include a pipe joint 25, the pipe joint 25 is penetrated through the air vent 211, and the pipe joint 25 is connected to the air filter 24, so as to ensure the cleanliness of the air in the hydraulic oil tank 100 and maintain the normal working environment of the hydraulic system.

[0064] Optional, such as Figure 2 and Figure 3 As shown, the oil baffle 22 includes a cylinder 222 and an oil baffle plate 223. Both ends of the cylinder 222 are open, one end of the cylinder 222 is connected to the cover plate 21, the cylinder 222 encloses an airflow cavity, the oil baffle plate 223 is arranged on the inner wall of the cylinder 222, and divides the airflow cavity into an airflow channel 221.

[0065] Optionally, the shape of the cylinder 222 can be cylindrical, prismatic, etc., and one end of the cylinder 222 can be connected to the cover plate 21 by welding, bonding, clamping, screwing, etc., without limitation.

[0066] Optionally, the oil baffle 223 may be one or more, such as 2, 3, 4, etc. The shape of the baffle may be square, circular, polygonal, etc., without limitation.

[0067] Optionally, the shape of the airflow channel 221 separated by the oil baffle plate 223 can be linear, curved, serpentine, etc.

[0068] Optionally, the oil baffle plate 223 and the cylinder 222 may be an integral structure or a split structure, and the oil baffle plate 223 and the inner wall of the cylinder 222 may be connected by welding, bonding, clamping, screwing, etc., without limitation.

[0069] Optionally, the oil baffle plate 223 may be perpendicular to the inner wall of the cylinder 222 , or may be at an acute angle to the inner wall of the cylinder 222 , and there is no specific limitation thereto.

[0070] When the forklift is traveling on an uneven road, the hydraulic oil in the oil tank will roll and splash, which can easily splash the hydraulic oil into the inside of the pipe street and enter the air filter 24 with exhalation, causing the air filter 24 to be blocked and affecting the inhalation and exhalation of the hydraulic oil tank 100.

[0071] The oil baffle member 22 includes a cylinder 222 and an oil baffle plate 223, both ends of the cylinder 222 are open, one end of the cylinder 222 is connected to the cover plate 21, the cylinder 222 encloses an airflow cavity, the oil baffle plate 223 is arranged on the inner wall of the cylinder 222, and the airflow cavity is divided into an airflow channel 221. The hydraulic oil in the box 10 will be blocked by the oil baffle member 22 to prevent the hydraulic oil from entering the air filter 24 through the air vent 211, but the air can pass normally.

[0072] Optionally, there are multiple oil baffles 223 , and the multiple oil baffles 223 are arranged in a staggered manner in the axial direction of the cylinder 222 , so that the airflow channel 221 is serpentine.

[0073] Optionally, the cylinder 222 is a rectangular parallelepiped, and one of two adjacent oil baffles 223 is connected to one side of the cylinder 222 , and the other is connected to the other side opposite to the cylinder 222 .

[0074] For example, Figure 2 and Figure 3 As shown, the cylinder 222 is a rectangular parallelepiped, and the cylinder 222 includes a first plate 225 and a second plate 226 relative to each other. There are four oil baffle plates 223, one of two adjacent oil baffle plates 223 is connected to the first plate 225 and has a gap with the second plate 226, and the other is connected to the second plate 226 and has a gap with the first plate 225, so that the multiple oil baffle plates 223 are staggered and arranged in the axial direction of the cylinder 222, and the air flow channel 221 is serpentine.

[0075] By setting up multiple oil baffles 223, the multiple oil baffles 223 are arranged in a staggered manner in the axial direction of the cylinder 222, and the air flow channel 221 is serpentine. While preventing the hydraulic oil from entering the air filter 24, air can pass normally, and because the gaps between the oil baffles 223 are large enough, the air flow will not be affected.

[0076] Optional, such as Figure 3 As shown, the oil baffle plate 223 is provided with a plurality of ventilation holes 224 .

[0077] Optionally, a plurality of air permeable holes 224 are provided at equal intervals on the oil baffle plate 223. Figure 3 As shown, the plurality of air permeable holes 224 on the oil baffle plate 223 are arranged at equal intervals and in an array.

[0078] As the hydraulic system works for a long time, the temperature of the hydraulic oil will rise sharply, and oil gas will be formed inside the oil tank and adhere to the inner walls of various structural parts of the oil tank to form droplets. By setting an oil baffle plate 223 with multiple air holes 224, the droplets formed inside the oil baffle 22 can drip into the oil tank in time, avoiding excessive accumulation of oil droplets inside the oil baffle 22 and entering the air filter 24 with exhalation.

[0079] Optional, such as Figure 1 and Figure 2 As shown, the cover plate 21 is further provided with a detection hole 213 , which is in communication with the air flow channel 221 . The cover plate assembly 20 further includes an air pressure sensor 26 , which is in communication with the detection hole 213 .

[0080] Optionally, the air pressure sensor 26 is a conventional air pressure sensor 26 in the art, and the air pressure sensor 26 and the detection hole 213 or the cover plate 21 can be connected and fixed by bonding, screwing, snapping, etc., without specific limitation.

[0081] Optionally, there is no limitation on the specific shape of the detection hole 213 , as long as it corresponds to the air pressure sensor 26 .

[0082] By setting up an air pressure sensor 26, the air pressure sensor 26 is used to detect the air pressure in the fuel tank in real time and display the specific air pressure value on the vehicle instrument. When the air pressure is detected to be higher than the preset value, a buzzer alarm is sounded to remind the driver to check the cause of the high air pressure and repair it, so as to prevent poor oil return or even fuel tank bursting due to excessive air pressure.

[0083] Optional, such as Figure 1 As shown, the hydraulic oil tank 100 further includes an oil return pipe 30 , an oil suction pipe 40 and a partition 50 . The oil return pipe 30 , the oil suction pipe 40 and the partition 50 are all connected to the tank body 10 , and the partition 50 is disposed between the oil return pipe 30 and the oil suction pipe 40 .

[0084] When the hydraulic equipment is working, it needs to frequently input and output hydraulic oil and air. In this process, it is necessary not only to ensure the sealing of the hydraulic oil tank 100, but also to ensure that the oil and air flow in and out of the tank unimpeded, which requires that the oil suction pipe and the oil return pipe of the hydraulic oil tank 100 cannot interfere with each other, and the oil return pipe cannot be too close to the oil suction pipe.

[0085] Optionally, the interface of the oil suction pipe 40 is designed with a multi-layer anti-slip inverted cone, which increases the matching stability of the interface and makes the hose less likely to fall off; at the same time, it also strengthens the sealing of the interface and reduces the possibility of the oil pump sucking in air.

[0086] Optionally, the partition 50 is located between the oil suction pipe 40 and the oil return pipe 30. The hydraulic oil sprayed from the oil return pipe 30 will flow away from the oil suction pipe 40 under the obstruction of the partition 50, thereby preventing the oil suction pipe 40 from sucking air into the hydraulic system and damaging the hydraulic components.

[0087] Optionally, the oil return pipe 30 , the oil suction pipe 40 and the partition 50 may be connected to the housing 10 by bonding, clamping, screwing, etc., without limitation.

[0088] By setting a partition 50, which is set between the return oil pipe 30 and the suction pipe 40, the hydraulic oil carrying a large number of bubbles flowing out of the return oil pipe 30 will be away from the suction port due to the rebound effect of the partition 50, thereby preventing the oil pump from sucking in air and causing cavitation.

[0089] Optionally, the partition 50 includes a first connecting plate 51 and a second connecting plate 52 , the second connecting plate 52 is arranged opposite to the oil suction pipe 40 , the first connecting plate 51 is connected to one end of the second connecting plate 52 , and extends away from the oil suction pipe 40 .

[0090] Optionally, the separator 50 may be an integrated structure, that is, the first connecting plate 51 and the second connecting plate 52 are an integrated structure made by an integrated molding process, and the integrated molding process may be stamping, casting, etc., without limitation. The separator 50 may also be a split structure, and the first connecting plate 51 and the second connecting plate 52 may be connected and fixed by welding, bonding, clamping, screwing, etc.

[0091] Optional, such as Figure 1 As shown, the box body 10 includes a first side plate 14, the oil suction pipe 40 is close to the first side plate 14 and extends in a direction parallel to the first side plate 14, the second connecting plate 52 is parallel to the first side plate 14, the first connecting plate 51 is connected to one end of the second connecting plate 52, and the first connecting plate 51 is parallel to the bottom plate 12 and extends away from the oil suction pipe 40. The hydraulic oil carrying a large number of bubbles flowing out of the outlet of the return oil pipe 30 is blocked and rebounded by the first connecting plate 51 and the second connecting plate 52, and will not be directly sucked into the oil pump through the oil suction pipe 40. In addition, the first connecting plate 51 is connected to the box body 10 and extends away from the oil suction pipe 40, which strengthens the overall strength of the hydraulic oil tank 100 and can prevent the hydraulic oil tank 100 from bulging and deforming due to the expansion and compression of the internal air during the oil return and oil discharge process.

[0092] By setting up a partition 50 including a first connecting plate 51 and a second connecting plate 52, the second connecting plate 52 is arranged opposite to the oil suction pipe 40, the first connecting plate 51 is connected to one end of the second connecting plate 52 and extends back to the oil suction pipe 40, it can prevent the oil pump from sucking in air to cause cavitation, and at the same time increase the overall strength of the hydraulic oil tank 100.

[0093] Optionally, the second connecting plate 52 is closer to the bottom plate 12 than the opening of the oil return pipe 30, so that the hydraulic oil carrying a large number of bubbles flowing out of the oil return pipe 30 can be blocked and / or rebounded by the second connecting plate 52, away from the oil suction pipe 40, thereby preventing the oil suction pipe 40 from sucking air into the hydraulic system and damaging the hydraulic components.

[0094] Optionally, the box body 10 further includes a reinforcing plate 15, such as Figure 1As shown, the reinforcement plate 15 is connected to the box body 10. The reinforcement plate 15 is located on the side of the oil inlet pipe away from the first side plate 14, and is used to strengthen the overall strength of the hydraulic oil tank 100 to prevent the oil tank from bulging and deforming due to expansion and compression of internal air during the oil return and oil discharge process.

[0095] Optionally, the hydraulic oil tank 100 further includes a detector 60 , which is connected to the tank body 10 and is used to detect the liquid level and / or temperature parameters in the tank body 10 .

[0096] Optionally, there may be one or more detectors 60 , without limitation. The multiple detectors 60 may be used to detect the liquid level parameters and the temperature parameters in the box 10 respectively.

[0097] Optional, such as Figure 1 As shown, the first side plate 14 of the box body 10 is provided with a first mounting hole (not shown in the figure) and a second mounting hole (not shown in the figure) on a side close to the bottom plate 12, and the detector 60 includes a liquid level detector 61 and a temperature detector 62, the liquid level detector 61 is connected with the first mounting hole, and the temperature detector 62 is connected with the second mounting hole. The liquid level detector 61 and the temperature detector 62 are conventional liquid level detectors 61 and temperature detectors 62 in the art, and are not specifically limited.

[0098] Optionally, the principle of the liquid level detector 61 is to convert the hydraulic oil pressure signal into a liquid level signal, and at the same time, the liquid level sensor is connected to the instrument, which can display the real-time liquid level in the hydraulic oil tank 100. When the liquid level is lower than the preset value, a buzzer alarm is sounded to remind the driver to check whether the hydraulic oil tank 100 has a fault and add hydraulic oil in time. The hydraulic equipment of the embodiment of the utility model removes the traditional oil dipstick structure. By adopting the liquid level detector 61, the driver can check the hydraulic oil level in real time through the instrument, effectively preventing the oil pump from being sucked empty due to insufficient hydraulic oil, thereby damaging various hydraulic components of the hydraulic system. When filling the oil tank with hydraulic oil, the driver can also judge whether the filling amount is sufficient by looking at the oil amount displayed on the instrument.

[0099] Optionally, the temperature detector 62 is used to detect the temperature of the hydraulic oil in real time. The temperature sensor is connected to the instrument, and the hydraulic oil temperature is displayed in real time on the instrument. When the temperature is higher than the preset temperature, a buzzer alarm is sounded to remind the driver to check whether there is a fault in the hydraulic system that causes the oil temperature to be too high. By using the temperature detector 62, the embodiment of the utility model can prevent the hydraulic system from continuing to work when the oil temperature is too high. When the oil temperature is too high, the viscosity of the hydraulic oil will be too low, and too low a viscosity of the hydraulic oil will cause the oil pump to malfunction.

[0100] Optional, such as Figure 1As shown, the hydraulic oil tank 100 also includes an oil drain switch 70, which is connected to the bottom plate 12 of the box body 10. When replacing the hydraulic oil or repairing the hydraulic system and draining the oil, first put the drain hose into the prepared hydraulic oil container, then turn the ball valve handle, then the manual ball valve opens, and the hydraulic oil will automatically flow out; when the drain operation is completed, the ball valve handle is reset and the manual ball valve is closed. The hydraulic oil tank 100 in the embodiment of the utility model drains the oil through the oil drain ball valve, and when draining the oil is required, only the handle needs to be rotated, which is easy to operate.

[0101] Optional, such as Figure 1 As shown, the hydraulic oil tank 100 further includes a plurality of fixing brackets 80, which are respectively connected and fixed to the box body 10 and are used to connect the box body 10 to the main body of the hydraulic device. For example, the hydraulic device is a forklift, and the hydraulic oil tank 100 is connected to the forklift body through the fixing brackets 80 and bolts. When the hydraulic oil tank 100 has a fault such as oil leakage from the weld, the oil tank can be removed for repair or replacement.

[0102] In the description of the embodiments of the present invention, it should be noted that the orientation or positional relationship of terms such as "center", "up", "down", "left", "right", "vertical", "horizontal", "inside" and "outside" are based on the orientation or positional relationship described in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0103] The above disclosure is only a preferred embodiment of the present invention, and certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A cover plate assembly, characterized in that: The cover plate assembly is applied to a hydraulic oil tank, and the cover plate assembly comprises: A cover plate, provided with air holes, the cover plate being used to be connected to the box body of the hydraulic oil tank; An oil baffle encloses an air flow channel, one end of the oil baffle is connected to the cover plate, the air vent connects the air flow channel and the outside, the oil baffle is used to extend into the receiving space of the box body, and the end of the air flow channel away from the cover plate is used to communicate with the receiving space.

2. The cover plate assembly according to claim 1, characterized in that: The oil baffle comprises a cylinder and an oil baffle plate, both ends of the cylinder are open, one end of the cylinder is connected to the cover plate, the cylinder encloses an airflow cavity, the oil baffle plate is arranged on the inner wall of the cylinder and divides the airflow cavity into the airflow channel.

3. The cover plate assembly according to claim 2, characterized in that: There are a plurality of oil baffles, and the plurality of oil baffles are arranged at staggered intervals in the axial direction of the cylinder, so that the air flow channel is serpentine.

4. The cover plate assembly according to claim 2, characterized in that: The oil baffle plate is provided with a plurality of ventilation holes.

5. The cover plate assembly according to claim 1, characterized in that: The cover plate assembly also includes an air filter, which is connected to the cover plate and communicated with the air vent.

6. The cover plate assembly according to claim 5, characterized in that: The cover plate assembly also includes a pipe joint, which is penetrated through the air vent and connected to the air filter.

7. The cover plate assembly according to claim 1, characterized in that: The cover plate is further provided with a detection hole, which is communicated with the air flow channel. The cover plate assembly also includes an air pressure sensor, which is communicated with the detection hole.

8. A hydraulic oil tank, characterized in that: It comprises a box body and a cover plate assembly as claimed in any one of claims 1 to 7, wherein the box body has a receiving space, the cover plate is connected to the box body, and the oil baffle extends into the receiving space.

9. The hydraulic oil tank according to claim 8, characterized in that: The hydraulic oil tank further comprises an oil return pipe, an oil suction pipe and a partition. The oil return pipe, the oil suction pipe and the partition are all connected to the tank body. The partition is arranged between the oil return pipe and the oil suction pipe.

10. The hydraulic oil tank according to claim 9, characterized in that: The partition comprises a first connecting plate and a second connecting plate, the second connecting plate is arranged opposite to the oil suction pipe, the first connecting plate is connected to one end of the second connecting plate and extends away from the oil suction pipe.

11. The hydraulic oil tank according to claim 10, characterized in that: The box body further includes a bottom plate opposite to the cover plate, and the second connecting plate is closer to the bottom plate than the opening of the oil return pipe.

12. The hydraulic oil tank according to claim 8, characterized in that: The hydraulic oil tank further comprises a detector, which is connected to the tank body and is used to detect the liquid level and / or temperature parameters in the tank body.

13. A hydraulic device, characterized in that: It comprises a main body and a hydraulic oil tank as claimed in any one of claims 8 to 12, wherein the hydraulic oil tank is accommodated in the main body.

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