A range hood capable of self-checking and oil removal

Abstract

The present invention provides a range hood capable of self-checking and oil removal, comprising an oil net, an oil condensing plate, a connecting rod driving device, a sliding assembly, a self-checking and oil removal system, an oil cup and a range hood body, a heating assembly being provided on the oil net and the oil condensing plate, the self-checking and oil removal system being electrically connected to the connecting rod driving device and the heating assembly, the sliding assembly being arranged on the inner front wall of the range hood body, the upper end of the oil net being movably connected to the sliding assembly, the lower end being movably connected to the front end of the oil condensing plate, the rear end of the oil condensing plate being movably connected to the rear side of the bottom of the range hood body, the connecting rod driving device being fixed on the side wall of the range hood body, the transmission shaft of the connecting rod driving device being connected to the oil condensing plate through a driving rod, and the oil cup being connected to the rear end of the oil condensing plate; when the self-checking and oil removal system detects that the load of the push rod driving device exceeds a specified value, the heating assembly is started to start heating, so that the oil condensed on the oil net and the oil condensing plate is softened and flows down to the oil cup. The present invention enhances the smoke collection effect of the range hood and can also automatically remove the internal condensed oil.

Description

Technical Field

[0001] The invention belongs to the technical field of range hoods, and in particular relates to a range hood capable of self-checking and oil removal. Background Art

[0002] In modern society, range hoods are essential kitchen appliances for kitchen cooking and smoke exhaust. With the development of range hoods, the types of range hoods have become diverse, such as ceiling-type range hoods, side-suction range hoods, central range hoods, submersible range hoods, etc., and adding motion mechanisms or special-shaped structures to range hoods makes range hoods more attractive in the market; but when the hood is used for a long time without cleaning, the grease will harden and adhere to the oil net or baffle, especially for ceiling-type range hoods and range hoods with conical oil nets. Since the grease solidifies on the oil net or baffle, the adhesion of the fumes is poor during later cooking, which increases the risk of grease dripping directly into the pot, and the smoke collection effect is poor. Since the hardening of grease not only affects the appearance, but also makes cleaning difficult, if the range hood or parts are frequently disassembled and cleaned, it is easy to damage the range hood or parts, which makes it difficult for users to clean and has a poor experience. Summary of the invention

[0003] In order to solve some of the problems existing in the above-mentioned prior art, the main purpose of the present invention is to provide a range hood capable of self-checking and oil removal, which can enhance the smoke collection effect and also perform self-checking and oil removal.

[0004] In order to achieve the above-mentioned purpose, the present invention provides a range hood capable of self-checking and oil removal, comprising an oil net, an oil condensing plate, a connecting rod driving device, a sliding assembly, a self-checking and oil removal system, an oil cup and a range hood body. A heating assembly is provided on the oil net and the oil condensing plate. The self-checking and oil removal system is electrically connected to the connecting rod driving device and the heating assembly. The sliding assembly is arranged on the inner front wall of the range hood body. The upper end of the oil net is movably connected to the sliding assembly, the lower end is movably connected to the front end of the oil condensing plate, the rear end of the oil condensing plate is movably connected to the rear bottom of the range hood body, the connecting rod driving device is fixed on the side wall of the range hood body, the transmission shaft of the connecting rod driving device is connected to the oil condensing plate through a driving rod, and the oil cup is connected to the rear end of the oil condensing plate. When the self-checking and oil removal system detects that the load of the push rod driving device exceeds a specified value, the heating assembly is started to start heating, so that the grease condensed on the oil net and the oil condensing plate is softened and flows downstream to the oil cup.

[0005] Furthermore, the self-detection oil removal system includes a current detection device and a heating controller, the current detection device and the heating controller are electrically connected, the current detection device is electrically connected to the connecting rod driving device, and the heating controller is electrically connected to the heating assembly.

[0006] Furthermore, it also includes a first connecting rod assembly, the first connecting rod assembly includes a first oil net connecting rod, a first oil condensing plate connecting rod and a first sub-connecting rod, the middle part of the first oil condensing plate connecting rod is connected to the middle part of the first side of the oil condensing plate, the front end of the first oil net connecting rod is slidably connected to the sliding assembly and is simultaneously connected to the upper end of the oil net, the rear end of the first oil net connecting rod is connected to the front end of the first oil condensing plate connecting rod on the first rivet, the lower end of the oil net is provided with a tongue, the tongue is plug-connected with the first tongue groove at the rear end of the first oil net connecting rod, the rear end of the first oil condensing plate connecting rod is connected to the front end of the first sub-connecting rod, and the rear end of the first sub-connecting rod is connected to the first side wall of the range hood body.

[0007] Furthermore, it also includes a second connecting rod assembly, the second connecting rod assembly includes a second oil net connecting rod, a second oil condensing plate connecting rod and a second sub-connecting rod, the middle part of the second oil condensing plate connecting rod is connected to the middle part of the second side of the oil condensing plate, the front end of the second oil net connecting rod is slidably connected to the sliding assembly and is simultaneously connected to the upper end of the oil net, the rear end of the second oil net connecting rod is connected to the front end of the second oil condensing plate connecting rod on the second rivet, the tongue is plug-connected to the second tongue groove at the rear end of the second oil net connecting rod, the rear end of the second oil condensing plate connecting rod is connected to the front end of the second sub-connecting rod, and the rear end of the second sub-connecting rod is connected to the second side wall of the range hood body.

[0008] Furthermore, the cross-section of the oil net is arc-shaped, the radius of the arc is 250-350 mm, and a plurality of smoke inlets are provided on the oil net.

[0009] Furthermore, it also includes an oil net side plate, a guide groove and a guide ring. The oil net side plate is fixed on the side of the oil net, the guide groove is arranged at the front end of the oil condensing plate, and the guide ring is arranged around the bottom smoke inlet of the range hood body and is connected with the oil cup; when the oil net is flipped down, the oil net side plate, the oil net and the oil condensing plate form a smoke collecting chamber.

[0010] Furthermore, the heating component is an electric heating film, a PTC heating sheet or an infrared heating tube, which is installed on the back side of the oil condensing plate and the back side and both sides of the oil screen.

[0011] Furthermore, it also includes a control panel, which is electrically connected to the heating component and is located in the user interaction area of ​​the range hood body.

[0012] Furthermore, the oil cup is a rectangular parallelepiped or a cylinder, and is fixed at the rear bottom of the range hood body.

[0013] Furthermore, the connecting rod driving device is replaced by a push rod driving device, which is fixed on the front wall of the range hood body. The push rod driving device is provided with a vertical rod, and the sliding assembly is provided with a sliding rail cross bar. The upper end of the oil net is connected to the two ends of the sliding rail cross bar, the vertical rod is fixedly connected to the middle of the sliding rail cross bar, and the vertical rod is connected to the driving shaft of the push rod driving device.

[0014] The invention relates to a range hood capable of self-checking and oil removal. When the range hood starts to work, the connecting rod driving device pushes the oil condensing plate to flip down, drives the oil net to flip down along the sliding assembly, so that the smoke collecting chamber of the range hood body moves downward, and the oil net is closer to the stove and the point where the oil smoke is generated, so that the oil smoke suction effect is better; when the range hood stops working, the connecting rod driving device pulls the oil condensing plate to flip up, drives the oil net to flip up along the sliding assembly, and finally the oil condensing plate is closed with the bottom of the range hood body, the oil net is in an upright state, and the oil stains flow down faster under the action of gravity, flow along the oil net to the oil condensing plate, and finally flow into the oil cup;

[0015] On the other hand, due to the accumulation of grease on the oil screen and the oil condensation plate, the weight of the oil screen and the oil condensation plate increases, and the load of the connecting rod drive device will also increase. When the self-checking oil removal system detects that the load of the connecting rod drive device reaches the preset value, the heating component is started to heat, so that the condensed grease on the oil screen and the oil condensation plate is softened, and then flows into the oil cup along the oil condensation plate to achieve the effect of oil removal; at the same time, the softened grease also makes it convenient for users to do further deep cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a range hood capable of self-checking and oil removal according to a first embodiment of the present invention;

[0017] Figure 2 This is an appearance diagram of the oil screen and the oil condensing plate in a closed state according to an embodiment of the present invention;

[0018] Figure 3 This is an appearance diagram of the oil screen and the oil condensing plate in the opened state according to the first embodiment of the present invention;

[0019] Figure 4 This is a cross-sectional view of the air inlet flap in the open state of the first embodiment of the present invention;

[0020] Figure 5 This is a cross-sectional view of an oil screen and an oil condensing plate in an open state according to an embodiment of the present invention;

[0021] Figure 6 It is a combined exploded view of a connecting rod assembly according to an embodiment of the present invention;

[0022] Figure 7 This is a schematic diagram of the structure of a range hood capable of self-checking and oil removal according to Embodiment 2 of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0024] Embodiment 1:

[0025] Embodiment 1 of the present invention provides a range hood capable of self-checking and oil removal, such as Figure 1-5 As shown, it includes an oil net 1, an oil condensing plate 2, a connecting rod driving device 3, a sliding component 5, a self-checking oil removal system, an oil cup 6 and a range hood body 7. A heating component 8 is provided on the oil net 1 and the oil condensing plate 2. The sliding component 5 is arranged on the front wall 73 of the range hood body 7. The upper end of the oil net 1 is movably connected to the sliding component 5, and the lower end is movably connected to the front end of the oil condensing plate 2. The rear end of the oil condensing plate 2 is movably connected to the rear edge 74 of the bottom of the range hood body 7. The connecting rod driving device 3 is fixed on the side wall of the range hood body 7. The transmission shaft of the connecting rod driving device 3 is connected to the oil condensing plate 2 through the driving rod 31, and the oil cup 6 is connected to the rear end of the oil condensing plate 2. When the self-checking oil removal system detects that the load of the connecting rod driving device 3 exceeds the specified value, the heating component 8 is started to start heating, so that the condensed oil on the oil net 1 and the oil condensing plate 2 is softened and flows into the oil cup 6.

[0026] With the above structure, when the range hood starts to work, the connecting rod driving device 3 pushes the oil condensing plate 2 to flip down, driving the oil net 1 to flip down along the sliding assembly 5, so that the smoke collecting chamber of the range hood body 7 moves downward, and the oil net 1 is closer to the stove and the point where the oil smoke is generated, so that the oil smoke absorption effect is better; when the range hood stops working, the connecting rod driving device 3 pulls the oil condensing plate 2 to flip up, driving the oil net 1 to flip up along the sliding assembly 5, and finally the oil condensing plate 2 and the bottom of the range hood body 7 are closed, and the oil net 1 is in an upright state. Under the action of gravity, the oil stains flow down faster, flow along the oil net 1 to the oil condensing plate 2, and finally flow into the oil cup 6;

[0027] On the other hand, due to the accumulation of grease on the oil net 1 and the oil condensing plate 2, the weight of the oil net 1 and the oil condensing plate 2 increases, and the load of the connecting rod driving device 3 also increases. When the self-checking oil removal system detects that the load of the connecting rod driving device 3 reaches the preset value, the heating component 8 is started to heat, so that the condensed grease on the oil net 1 and the oil condensing plate 2 is softened, and then flows into the oil cup 6 along the oil condensing plate 2 to achieve the effect of oil removal; at the same time, the softened grease also facilitates the user to do further deep cleaning.

[0028] The self-checking oil removal system includes a current detection device and a heating controller, the current detection device and the heating controller are electrically connected, the current detection device is electrically connected to the connecting rod driving device 3, and the heating controller is electrically connected to the heating assembly 8; in this embodiment, the connecting rod driving device 3 is preferably a motor;

[0029] When the motor load is too large, the required current will increase. When the current detection device detects that the current value in the connecting rod drive device 3 exceeds the preset value, it is determined that the grease condensed on the oil screen 1 and the oil condensation plate 2 exceeds the standard and needs to be cleaned. The heating controller controls the heating component 8 to start heating to soften the grease.

[0030] This embodiment also includes a connecting rod assembly, which includes a first connecting rod assembly 41 and a second connecting rod assembly 42. Figure 2-6 As shown,

[0031] The first connecting rod assembly 41 includes a first oil net connecting rod 411, a first oil condensing plate connecting rod 412 and a first sub-connecting rod 413. The middle part of the first oil condensing plate connecting rod 412 is connected to the middle part of the first side edge 21 of the oil condensing plate 2. The front end of the first oil net connecting rod 411 is slidably connected to the sliding assembly 5 and is simultaneously connected to the upper end of the oil net 1. The rear end of the first oil net connecting rod 411 and the front end of the first oil condensing plate connecting rod 412 are connected to the first rivet 43. The lower end of the oil net 1 is provided with a tongue 14, and the tongue 14 is plug-connected with the first tongue groove 414 at the rear end of the first oil net connecting rod 411. The rear end of the first oil condensing plate connecting rod 412 is connected to the front end of the first sub-connecting rod 413, and the rear end of the first sub-connecting rod 413 is connected to the first side wall 71 of the range hood body 7.

[0032] The second connecting rod assembly 42 includes a second oil net connecting rod 421, a second oil condensing plate connecting rod 422 and a second auxiliary connecting rod 423. The middle part of the second oil condensing plate connecting rod 422 is connected to the middle part of the second side edge 22 of the oil condensing plate 2. The front end of the second oil net connecting rod 421 is slidably connected to the sliding assembly 5 and is simultaneously connected to the upper end of the oil net 1. The rear end of the second oil net connecting rod 421 is connected to the front end of the second oil condensing plate connecting rod 422 on the second rivet 44. The inserting tongue 14 is plug-connected to the second inserting tongue groove 424 at the rear end of the second oil net connecting rod 421. The rear end of the second oil condensing plate connecting rod 422 is connected to the front end of the second auxiliary connecting rod 423. The rear end of the second auxiliary connecting rod 423 is connected to the second side wall 72 of the range hood body 7.

[0033] The plug-in connection between the plug tongue 14 and the first plug tongue groove 414 and the second plug tongue groove 424 can make the disassembly and assembly of the oil screen 1 more convenient and quick;

[0034] In this way, the connecting rod driving device 3 drives the oil condensing plate 2 to flip, which drives the first oil condensing plate connecting rod 412, the first auxiliary connecting rod 413, the second oil condensing plate connecting rod 422, and the second auxiliary connecting rod 423 to flip in a linked manner, so that the first oil net connecting rod 411 and the second oil net connecting rod 421 move on the sliding assembly, and then the oil net 1 also flips accordingly.

[0035] The cross-section of the oil net 1 is an arc-shaped, and the radius of the arc is 250-350mm, preferably 300mm in this embodiment; a plurality of smoke inlets are provided on the oil net; this can increase the contact area between the oil net 1 and the oil smoke, and at the same time, when the oil net 1 is upright, the grease on it can flow down better along the arc; a plurality of smoke inlets are provided on the oil net to perform preliminary filtering of the oil smoke.

[0036] This embodiment also includes an oil screen side plate 13, a guide groove 23, a guide ring 24 and a slide rail cross bar 51;

[0037] The oil net side plate 13 is fixed on the side of the oil net 1. When the oil net 1 is turned down, the oil net side plate 13, the oil net 1 and the oil condensing plate 2 form a smoke collecting chamber, which can absorb the oil smoke generated in the pot in the first time.

[0038] The guide groove 23 is arranged at the front end of the oil condensing plate 2. When the filter screen 1 and the oil condensing plate 2 are opened and the range hood is working, the oil droplets of the filter screen 1 and the oil condensing plate 2 slide smoothly into the guide groove 23 to prevent the oil from dripping into the pot.

[0039] The guide ring 24 is arranged around the smoke inlet of the range hood body 7. Figure 2 As shown, when the oil condensing plate 2 is closed, the guide ring surrounds the oil condensing plate 2 and is connected to the oil cup 6. The oil droplets on the oil net 1 and the oil condensing plate 2 flow into the guide ring 24 and then flow into the oil cup 6 along the guide ring 24.

[0040] The heating component 8 is an electric heating film, a PTC heating sheet or an infrared heating tube, and is installed on the back of the oil condensing plate 2 and the back and both sides of the oil screen 1. When the heating component 8 is heated, due to the conduction of heat, the grease adhering to the surface of the range hood volute or the inside of the volute will also be softened, so that the grease will drip along the surface of the volute onto the oil condensing plate 2, and finally flow into the oil cup 6.

[0041] The range hood also includes a control panel, which is electrically connected to the heating assembly 8 and is located in the user interaction area of ​​the range hood body 7. When the range hood usage time reaches a specified value, the control panel prompts the user to clean the grease. After the user enters an instruction on the control panel, the heating assembly 8 starts to heat and soften the grease.

[0042] The oil cup 6 of this embodiment is a rectangular parallelepiped or a cylinder, and is preferably a rectangular parallelepiped. The oil cup 6 is fixed behind the bottom of the range hood body 7, avoiding the problem of grease easily dripping into the pot when the oil cup is set in the middle, and also facilitating the grease to flow into the oil cup 6 along the oil condensing plate 2.

[0043] In this embodiment, when the oil net 1 needs to be flipped up and down, the connecting rod driving device 3 drives the oil condensing plate 2 to flip down, so that the first connecting rod assembly 41 and the second connecting rod assembly 42 rotate, and drive the oil net 1 to flip up and down; when the oil net 2 and the oil condensing plate 2 flip down, the smoke collecting chamber moves down, and the oil net 1 is closer to the stove and the point where the oil smoke is generated, and the oil smoke absorption effect is better; at the same time, the current detection device detects the current value of the connecting rod driving device 3. When the detection value exceeds the preset value, it is determined that the condensed oil on the oil net 1 and the oil condensing plate 2 exceeds the standard and needs to be cleaned. The heating controller controls the heating component 8 to start heating to soften the oil. The softened oil flows into the oil cup 6 along the oil condensing plate 2 and the guide ring 24, thus completing the self-checking oil removal; at the same time, the control panel will also regularly remind the user to remove the oil, and the softened oil is also very convenient to clean. The driving device 3 of this embodiment is preferably a motor, which is small in size, low in failure rate, and durable.

[0044] Embodiment 2:

[0045] like Figure 7 As shown, in the second embodiment, on the basis of the first embodiment, the connecting rod driving device 3 is replaced by a push rod driving device 9, the push rod driving device 9 is fixed on the front wall 73 of the range hood body 7, the push rod driving device 9 is provided with a vertical rod 91, the sliding assembly 5 is provided with a slide rail cross bar 51, the upper end of the oil net 1 is connected to the two ends of the slide rail cross bar 51, the vertical rod 91 is fixedly connected to the middle of the slide rail cross bar 51, and the vertical rod 91 is connected to the driving shaft of the push rod driving device 9;

[0046] In this way, the push rod driving device 9 drives the vertical rod 91 to move up and down, driving the slide rail cross rod 51 to move up and down, so that the oil net 1 flips up and down along the sliding assembly 5.

[0047] Specifically, the push rod driving device 9 drives the slide rail cross bar 51 to move up and down, driving the first oil net connecting rod 411 and the second oil net connecting rod 421 connected to the two ends of the slide rail cross bar 51 to flip, driving the first oil condensing plate connecting rod 412, the first auxiliary connecting rod 413, the second oil condensing plate connecting rod 422, and the second auxiliary connecting rod 423 to flip, so that the oil net 1 and the oil condensing plate 2 are flipped. The current detection device is electrically connected to the push rod driving device 9, and detects the current in the push rod driving device 9 in real time to determine whether its load exceeds the standard.

[0048] When the oil net 1 of the second embodiment needs to be flipped up and down, the push rod driving device 9 drives the slide rail cross bar 51 to move up and down, so that the first connecting rod assembly 41 and the second connecting rod assembly 42 rotate, driving the oil net 1 and the oil condensing plate 2 to flip up and down; when the oil net 1 and the oil condensing plate 2 flip down, the smoke collecting chamber moves down, the oil net 1 is closer to the stove and the point where the oil smoke is generated, and the oil smoke absorption effect is better; at the same time, the current detection device detects the current value of the push rod driving device 9. When the detection value exceeds the preset value, it is determined that the condensed oil on the oil net 1 and the oil condensing plate 2 exceeds the standard and needs to be cleaned. The heating controller controls the heating component 8 to start heating to soften the oil. The softened oil flows into the oil cup 6 along the oil condensing plate 2 and the guide ring 24, thus completing the self-inspection and oil removal; at the same time, the control panel will also regularly remind the user to remove the grease, and the softened grease is also very convenient to clean.

[0049] The driving device 3 of the present embodiment is preferably a motor, which has a small size, a low failure rate and is durable.

[0050] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A range hood capable of self-checking and oil removal, characterized in that: The oil filter assembly comprises an oil screen, an oil condensing plate, a connecting rod driving device, a sliding assembly, a self-checking oil removal system, an oil cup, a smoke machine body, an oil screen side plate, a guide groove and a guide ring, the oil screen and the oil condensing plate are provided with a heating assembly, the self-checking oil removal system is electrically connected with the connecting rod driving device and the heating assembly, the sliding assembly is arranged on the inner front wall of the smoke machine body, the upper end of the oil screen is movably connected with the sliding assembly, the lower end is movably connected with the front end of the oil condensing plate, the rear end of the oil condensing plate is movably connected with the rear bottom of the smoke machine body, the connecting rod driving device is fixed on the side wall of the smoke machine body, the transmission shaft of the connecting rod driving device is connected with the oil condensing plate through a driving rod, and the oil cup is connected with the rear end of the oil condensing plate; when the self-checking oil removal system detects that the load of the connecting rod driving device exceeds a specified value, the heating assembly is started to start heating, so that the condensed oil on the oil screen and the oil condensing plate is softened and flows to the oil cup; The self-checking oil removal system comprises a current detection device and a heating controller, wherein the current detection device and the heating controller are electrically connected, the current detection device is electrically connected to the connecting rod driving device, and the heating controller is electrically connected to the heating assembly; The oil net side panel is fixed on the side of the oil net, the guide groove is arranged at the front end of the oil condensing plate, the guide ring is arranged around the bottom smoke inlet of the range hood body and is connected with the oil cup; when the oil net is flipped down, the oil net side panel, the oil net and the oil condensing plate form a smoke collecting chamber.

2. The range hood capable of self-checking and oil removal according to claim 1, characterized in that: The cam is connected to the first oil mesh connecting rod, and the cam is connected to the first oil mesh connecting rod by a spring, and the cam is connected to the first oil mesh connecting rod by a spring.

3. The range hood capable of self-checking and oil removal according to claim 2, characterized in that: It also includes a second connecting rod assembly, which includes a second oil net connecting rod, a second oil condensing plate connecting rod and a second sub-connecting rod. The middle part of the second oil condensing plate connecting rod is connected to the middle part of the second side of the oil condensing plate. The front end of the second oil net connecting rod is slidably connected to the sliding assembly and is simultaneously connected to the upper end of the oil net. The rear end of the second oil net connecting rod is connected to the front end of the second oil condensing plate connecting rod on a second rivet. The tongue is plug-connected to the second tongue groove at the rear end of the second oil net connecting rod. The rear end of the second oil condensing plate connecting rod is connected to the front end of the second sub-connecting rod. The rear end of the second sub-connecting rod is connected to the second side wall of the range hood body.

4. The range hood capable of self-checking and oil removal according to claim 1, characterized in that: The cross section of the oil net is in the shape of an arc, the radius of the arc is 250-350 mm, and a plurality of smoke inlets are provided on the oil net.

5. The range hood capable of self-checking and oil removal according to claim 1, characterized in that: The heating component is an electric heating film, a PTC heating sheet or an infrared heating tube, and is installed on the back side of the oil condensing plate and the back side and both sides of the oil net.

6. The range hood capable of self-checking and oil removal according to claim 1, characterized in that: It also includes a control panel, which is electrically connected to the heating component and is located in a user interaction area of ​​the range hood body.

7. The range hood capable of self-checking and oil removal according to claim 1, characterized in that: The oil cup is a rectangular parallelepiped or a cylinder and is fixed behind the bottom of the range hood body.

8. The range hood capable of self-checking and oil removal according to any one of claims 1 to 7, characterized in that: The connecting rod driving device is replaced by a push rod driving device, and the push rod driving device is fixed on the front wall of the range hood body. The push rod driving device is provided with a vertical rod, and the sliding assembly is provided with a sliding rail cross bar. The upper end of the oil net is connected to the two ends of the sliding rail cross bar, and the vertical rod is fixedly connected to the middle of the sliding rail cross bar, and the vertical rod is connected to the driving shaft of the push rod driving device.

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