Oil cup mounting structure and range hood with same

Abstract

The utility model discloses an oil cup installation structure and a range hood with the same. The oil cup installation structure comprises a range hood body, a swing block assembly and an oil cup assembly. The range hood main body is provided with a hanging cavity, and the hanging cavity is provided with a downward hanging port; the swing block assembly is rotationally connected to the range hood body, and the acting end of the swing block assembly extends into the hanging connection cavity. The oil cup assembly comprises an oil cup and oil cup hooks, the oil cup hooks are arranged on the two sides of the oil cup, limiting parts are arranged on the oil cup hooks, when the oil cup assembly is installed, the limiting parts extrude the acting end of the swing block assembly in the installation direction through the acting force of a user, and the swing block assembly rotates and enables the limiting parts to cross; after the oil cup assembly is installed in place, the swing block assembly resets, and the acting end of the swing block assembly extrudes the limiting part in the installation direction. According to the oil cup installation structure, the problem that the swing block assembly is prone to breakage due to repeated deformation can be solved, the structural stability of the swing block assembly is improved, and therefore the overall structural stability of the oil cup installation structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, specifically to an oil cup mounting structure and a range hood having the same. Background Technology

[0002] Range hoods are typically equipped with an oil cup to collect grease. The oil cup is installed at the bottom of the range hood body and can be removed for easy cleaning. In related technologies, the oil cup is connected to the range hood body via a hook-on method, such as... Figure 1 As shown, a hook 32 is connected to the oil cup 31. The hook 32 is used to hook and fix to the hanging cavity a on the main body of the range hood. A limiting plate b is provided in the hanging cavity a. After the hook 32 is in place with the hanging cavity a, the limiting plate b will press the hook 32 firmly. Each time the hook 32 is inserted into or removed from the hanging cavity a, it will squeeze the limiting plate b and deform it. The limiting plate b is usually integrally formed with the cavity wall of the hanging cavity a. During the disassembly and assembly of the oil cup 31, the limiting plate b is easily damaged after being squeezed. Utility Model Content

[0003] The purpose of this utility model is to provide an oil cup mounting structure and a range hood having the same, which is used to solve the above-mentioned technical problems.

[0004] The oil cup installation structure proposed in this utility model includes a range hood body, a swing block assembly, and an oil cup assembly. The range hood body is provided with a hanging cavity, which has a downward-facing hanging interface. The swing block assembly is rotatably connected to the range hood body, and its working end extends into the hanging cavity. The oil cup assembly includes an oil cup and an oil cup hook. The oil cup hooks are provided on both sides of the oil cup, and the oil cup hooks are provided with limiting parts. When installing the oil cup assembly, the user's force causes the limiting parts to press the working end of the swing block assembly in the installation direction, causing the swing block assembly to rotate and the limiting part to pass through. After the oil cup assembly is installed in place, the swing block assembly resets, and its working end presses the limiting part in the installation direction.

[0005] According to one embodiment of the present invention, the swing block assembly includes a swing block and an elastic element. The swing block is rotatably connected to the main body of the range hood. The swing block has an active end. One end of the elastic element is connected to the swing block, and the other end is connected to the main body of the range hood. When installing the oil cup assembly, the user moves the oil cup hook from the hanging interface into the hanging cavity. The limiting part causes the elastic element to deform through the active end of the swing block. After the oil cup hook is installed in place in the hanging cavity, the elastic element applies a force towards the installation direction to the limiting part through the active end of the swing block.

[0006] According to one embodiment of the present invention, there are two elastic elements. The ends of the two elastic elements that are far apart from each other are connected to the main body of the smoke hood, and the ends that are close to each other are connected to the swing block. When the oil cup assembly is installed, the swing block rotates, causing the elastic element on one side to be compressed and the elastic element on the other side to be stretched. After the limiting part passes the working end of the swing block, the elastic elements on both sides are reset and a force in the installation direction is applied to the limiting part through the working end of the swing block.

[0007] According to one embodiment of the present invention, the cross-section of the working end of the pendulum block is V-shaped or arc-shaped.

[0008] According to one embodiment of the present invention, the working end has a first surface facing the installation direction and a second surface away from the installation direction. When the oil cup assembly is installed, the limiting part presses against the second surface. After the limiting part passes the working end, the first surface presses against the limiting part in the installation direction.

[0009] According to one embodiment of the present invention, the left and right sides of the main body of the smoke hood are connected to blocking blocks, the hanging cavity is provided on the blocking block, the lower surface of the blocking block is provided with a hanging interface, the swing block assembly is rotatably connected to the blocking block and the working end extends into the hanging cavity, one end of the elastic element is connected to the blocking block and the other end is connected to the swing block.

[0010] According to one embodiment of the present invention, the upper surface of the block is provided with a swing channel communicating with the hanging cavity, and the working end of the swing block extends into the hanging cavity through the swing channel.

[0011] According to one embodiment of the present invention, the swing block includes a rotating connecting part, an upper connecting part, and a lower acting part. The block is provided with a rotating connecting position, which is located above the swing channel. The rotating connecting part is rotatably connected to the rotating connecting position. One end of the elastic member is connected to the upper connecting part, and the other end is connected to the block. The lower acting part extends into the hanging cavity through the swing channel and has an acting end.

[0012] This utility model also proposes a range hood, which adopts the above-mentioned oil cup installation structure and includes a back plate assembly. Profiles are provided on both sides of the main body of the range hood, the back plate assembly is connected between the two profiles, a block is provided at the lower end of the profile, a hanging cavity is provided on the block, and the swing block assembly is rotatably connected to the block.

[0013] According to one embodiment of the present invention, the smoke hood further includes a side baffle assembly, a mounting groove is provided on the front side of the profile, the side baffle assembly is connected to the mounting groove, and the swing block assembly is connected to the lower end of the profile and supports the side baffle assembly upward.

[0014] Compared with the prior art, the oil cup mounting structure of this utility model has the following advantages:

[0015] In this utility model's oil cup mounting structure, the active end of the swing block assembly can rotate under the force of the oil cup hook. This allows the swing block assembly to avoid the oil cup hook under its push, enabling the oil cup hook to be smoothly installed into the mounting cavity. After the oil cup hook is installed in place within the mounting cavity, the swing block assembly resets and presses against the limiting part of the oil cup hook, thus firmly securing the oil cup hook within the mounting cavity. This improves the installation stability of the oil cup hook and prevents the oil cup from easily falling off. The swing block assembly rotates rather than elastically deforms when pressed by the oil cup hook, thus avoiding the problem of easy breakage due to repeated deformation. This improves the structural stability of the swing block assembly and consequently, the overall structural stability of the oil cup mounting structure. Attached Figure Description

[0016] Figure 1 A structural cross-sectional view of the existing oil cup mounting structure;

[0017] Figure 2 This is a structural disassembly diagram of the oil cup mounting structure of this utility model;

[0018] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the oil cup mounting structure of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of a section at point B in the middle;

[0021] Figure 6 This is a schematic diagram of the blockage structure in this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the swing block in this utility model.

[0023] In the diagram: a. Hanging cavity, b. First side, c. Second side, 1. Main body of the range hood, 11. Block, 111. Rotating connection position, 12. Profile, 2. Swing block assembly, 21. Swing block, 211. Rotating connection part, 212. Upper connection part, 213. Lower action part, 22. Elastic element, 3. Oil cup assembly, 31. Oil cup, 32. Oil cup hook, 321. Limiting part, 4. Back plate assembly, 5. Side baffle assembly, b. Limiting plate.

[0024] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0026] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0027] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0028] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0029] Please see Figures 2 to 5 This utility model discloses an oil cup installation structure for a range hood. The oil cup installation structure includes a range hood body 1, a swing block assembly 2, and an oil cup assembly 3. The range hood body 1 has a hanging cavity a with a downward-facing hanging interface. The swing block assembly 2 is rotatably connected to the range hood body 1, and its working end extends into the hanging cavity a. The oil cup assembly 3 includes an oil cup 31 and an oil cup hook 32. The oil cup 31 has oil cup hooks 32 on both sides, and each oil cup hook 32 has a limiting part 321. When installing the oil cup assembly 3, the user's force causes the limiting part 321 to press the working end of the swing block assembly 2 in the installation direction, causing the swing block assembly 2 to rotate and the limiting part 321 to pass over it. After the oil cup assembly 3 is installed in place, the swing block assembly 2 returns to its original position, and its working end presses the limiting part 321 in the installation direction.

[0030] In this embodiment, the oil cup 31 is installed at the bottom of the back panel assembly 4 of the range hood body 1. During the exhaust process, the oil and water mixture in the fumes accumulates in the air collection chamber and on the volute of the exhaust fan, eventually flowing into the oil cup 31 for collection. The range hood body 1 has two hanging cavities a, located at opposite ends of the bottom. The length of the oil cup 31 corresponds to the length of the bottom of the range hood body 1, so that the positions of the two oil cup hooks 32 correspond to the positions of the two hanging cavities a. The fixed end of the oil cup hook 32 is fixedly connected to the oil cup 31, and the hook end can extend into the hanging cavity a and hook onto the pre-set cavity wall of the hanging cavity a. This allows for the fixed attachment of the oil cup 31 to the bottom of the range hood body 1.

[0031] The active end of the swing block assembly 2 extends into the mounting cavity a. When the swing block assembly 2 is subjected to a force in a preset direction, it can rotate. After the force is removed, the swing block assembly 2 can automatically return to its original position. The active end of the swing block assembly 2 faces the mounting interface. The oil cup hook 32 enters the mounting cavity a from the mounting interface. The limiting part 321 is provided on the side of the oil cup hook 32 facing the active end of the swing block assembly 2. When the oil cup hook 32 enters the mounting cavity a, the limiting part 321 will first abut against the active end of the swing block assembly 2. The active end of the swing block assembly 2 will create resistance to the movement of the oil cup hook 32 along the installation direction. As the installer applies force to push the oil cup hook 32 into the mounting cavity a, the oil cup hook 32 will squeeze the swing block assembly 2 to make it rotate, so that the active end of the swing block assembly 2 can avoid the installation path of the oil cup hook 32, that is, the limiting part 321 can pass over the swing block assembly 2, so that the oil cup hook 32 can be installed in the mounting cavity a. After the oil cup hook 32 is installed in place, the swing block assembly 2 resets so that its working end presses against the limiting part 321, thereby pressing the oil cup hook 32 into the hanging cavity a and preventing the oil cup 31 from easily falling off. When the swing block assembly 2 is pressed by the oil cup hook 32, it rotates rather than elastically deforms, thus avoiding the problem of the swing block assembly 2 easily breaking due to repeated deformation, improving the structural stability of the swing block assembly 2, and thus improving the overall structural stability of the oil cup installation structure.

[0032] The oil cup mounting structure of this utility model, as follows: Figure 3 , Figure 5 and Figure 7As shown, the swing block assembly 2 includes a swing block 21 and an elastic element 22. The swing block 21 is rotatably connected to the main body 1 of the range hood. The swing block 21 has an active end. One end of the elastic element 22 is connected to the swing block 21, and the other end is connected to the main body 1 of the range hood. When installing the oil cup assembly 3, the user moves the oil cup hook 32 from the hanging interface into the hanging cavity a. The limiting part 321 causes the elastic element 22 to deform through the active end of the swing block 21. After the oil cup hook 32 is installed in the hanging cavity a, the elastic element 22 applies a force towards the installation direction to the limiting part 321 through the active end of the swing block 21.

[0033] When the swing block 21 is compressed, it can rotate within the mounting cavity a. The elastic element 22 is used to reset the swing block 21 when it is not compressed. When the oil cup hook 32 enters the mounting member and compresses the working end of the swing block 21, the swing block 21 rotates to allow its working end to avoid the installation path of the oil cup hook 32. At the same time, the compressive force is transmitted to the elastic element 22, causing it to elastically deform. After the oil cup hook 32 passes the working end of the swing block 21 and is installed in place, the elastic element 22 returns to its original shape. At this time, the elastic force of the elastic edge can drive the swing block 21 to reset and press the working end of the swing block 21 onto the limiting part 321 of the oil cup hook 32. By using the elastic element 22 to drive the swing block 21 to reset and apply force to press it onto the oil cup hook 32, the avoidance effect of the swing block 21 during each installation of the oil cup hook 32 and the pressing effect of the swing block 21 on the oil cup hook 32 after installation can be improved.

[0034] The oil cup mounting structure of this utility model, as follows: Figure 3 and Figure 5 As shown, there are two elastic elements 22. The ends of the two elastic elements 22 that are far apart from each other are connected to the main body 1 of the range hood, and the ends that are close to each other are connected to the swing block 21. When the oil cup assembly 3 is installed, the swing block 21 rotates, causing one side of the elastic element 22 to be compressed and the other side of the elastic element 22 to be stretched. After the limiting part 321 passes the working end of the swing block 21, the elastic elements 22 on both sides are reset and apply a force towards the installation direction to the limiting part 321 through the working end of the swing block 21.

[0035] The two elastic elements 22 can be defined as the first elastic element and the second elastic element, respectively. When the oil cup hook 32 presses against the swing block 21 to make the swing block 21 rotate, the first elastic element is compressed and the second elastic element is stretched. At this time, both the first and second elastic elements generate elastic reaction forces on the swing block 21. After the oil cup hook 32 is installed in place, both the first and second elastic elements restore their deformation, thereby resetting the swing block 21 and pressing the oil cup hook 32 with its working end. In this way, the pressing effect on the oil cup hook 32 can be further improved.

[0036] The oil cup mounting structure of this utility model, as follows: Figure 7As shown, the cross-section of the working end of the swing block 21 is V-shaped or arc-shaped. In this way, the limiting part 321 can have sufficient contact area with the working end of the swing block 21 both before and after passing the working end of the swing block 21, thereby improving the clamping effect of the swing block 21 on the oil cup hook 32.

[0037] The oil cup mounting structure of this utility model, as follows: Figure 5 and Figure 7 As shown, the actuating end has a first surface b facing the installation direction and a second surface c facing away from the installation direction. When installing the oil cup assembly 3, the limiting part 321 presses against the second surface c. After the limiting part 321 passes the actuating end, the first surface b presses against the limiting part 321 in the installation direction. The first surface b and the second surface c are inclined to each other. During the process of inserting the oil cup hook 32 into the hooking cavity a, the limiting part 321 presses against the second surface c. The second surface c decomposes the pressing force of the limiting part 321 into a component force that drives the swing block 21 to rotate and a component force that drives the elastic element 22 to deform. After the oil cup hook 32 is installed in place, the first surface b presses against the limiting part 321, and the oil cup hook 32 is pressed and fixed in the hooking cavity a along the inclined direction.

[0038] The oil cup mounting structure of this utility model, as follows: Figure 3 As shown, the left and right sides of the range hood body 1 are connected to blocking blocks 11. A hanging cavity a is located on the blocking block 11, and the lower surface of the blocking block 11 has a hanging interface. The swing block assembly 2 is rotatably connected to the blocking block 11, with its active end extending into the hanging cavity a. One end of the elastic element 22 is connected to the blocking block 11, and the other end is connected to the swing block 21. The blocking block 11 is connected to the range hood body 1, and the oil cup hook 32 is hung inside the blocking block 11. Forming the hanging cavity a through the blocking block 11 avoids creating a cavity on the range hood body 1, thus simplifying the formation of the hanging cavity a and improving its structural strength.

[0039] The oil cup mounting structure of this utility model, as follows: Figure 5 As shown, the upper surface of the block 11 is provided with a swing channel communicating with the hanging cavity a. The active end of the swing block 21 extends into the hanging cavity a through the swing channel. The active end of the swing block 21 can extend into the hanging cavity a from top to bottom, while the end of the swing block 21 away from the active end is located outside the hanging cavity a. In this way, the connection method between the swing block 21 and the block 11 can be simplified, and the connection convenience can be improved.

[0040] The oil cup mounting structure of this utility model, as follows: Figure 7As shown, the swing block 21 includes a rotating connecting part 211, an upper connecting part 212, and a lower actuating part 213. The block 11 has a rotating connecting position 111 located above the swing channel. The rotating connecting part 211 is rotatably connected to the rotating connecting position 111. One end of the elastic member 22 is connected to the upper connecting part 212, and the other end is connected to the block 11. The lower actuating part 213 extends into the hanging cavity a through the swing channel and has an actuating end. The rotating connecting part 211 may have a shaft hole, and the rotating connecting position 111 may have a corresponding connecting hole. A rotating shaft connects the shaft hole and the connecting hole, and the rotating shaft is rotatably engaged with at least one of the shaft hole and the connecting hole to achieve the rotatability of the swing block 21. The upper connecting part 212 is located above the hanging cavity a. The elastic element 22 connects the block 11 to the upper connecting part 212 outside the hanging cavity a, thereby reducing the space occupied by the hanging cavity a and preventing the rotation process of the swing block 21 and the deformation process of the elastic element 22 from hindering each other.

[0041] like Figure 2 As shown, this utility model also proposes a range hood, which adopts the above-described oil cup mounting structure. The range hood also includes a back plate assembly 4. Profiles 12 are provided on both sides of the range hood body 1. The back plate assembly 4 is connected between the two profiles 12. A block 11 is provided at the lower end of the profile 12. The hanging cavity a is provided on the block 11. The swing block assembly 2 is rotatably connected to the block 11. The profile 12 is a high-strength structure on the back plate assembly 4 and has sufficient thickness to connect with the block 11, thus improving the connection strength between the block 11 and the back plate assembly 4. It is understood that during the operation of the range hood, the weight of the oil cup 31 will increase after collecting oil, thus increasing the gravity on the block 11 from the oil cup 31. Connecting the block 11 to the profile 12 can prevent the back plate assembly 4 from being easily damaged or deformed after the increased gravity of the oil cup 31, thereby improving the overall structural stability of the back plate assembly 4.

[0042] like Figure 2 As shown, the range hood of this utility model also includes a side baffle assembly 5. A mounting groove is provided on the front side of the profile 12, and the side baffle assembly 5 is connected to the mounting groove. The swing block assembly 2 is connected to the lower end of the profile 12 and supports the side baffle assembly 5 upwards. The rear side of the side baffle assembly 5 is connected to the mounting groove, enabling a fixed connection between the side baffle assembly 5 and the profile 12, thereby fixing the side baffle assembly 5 to the left and right sides of the back panel assembly 4. The rear end of the bottom side of the side baffle assembly 5 overlaps downwards on the limiting structure b, so that the blocking block 11 can provide upward support for the side baffle assembly 5, preventing concentrated force on the rear side of the side baffle assembly 5 and improving the installation stability of the side baffle assembly 5.

[0043] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oil cup mounting structure for a smoke machine, characterized by comprising: The application relates to a smoke machine main body (1) provided with a hanging cavity (a) with a downward hanging interface; a swing block assembly (2) rotatably connected to the smoke machine main body (1) and having an acting end extending into the hanging cavity (a); and an oil cup assembly (3) comprising an oil cup (31) and an oil cup hook (32), wherein the two sides of the oil cup (31) are provided with the oil cup hook (32), the oil cup hook (32) is provided with a limiting part (321), and when the oil cup assembly (3) is installed, the limiting part (321) is pressed against the acting end of the swing block assembly (2) in the installation direction, the swing block assembly (2) rotates and the limiting part (321) passes over, and after the oil cup assembly (3) is installed in place, the swing block assembly (2) resets and the acting end presses the limiting part (321) in the installation direction. The swing block assembly (2) comprises a swing block (21) and an elastic member (22), the swing block (21) is rotatably connected to the smoke machine main body (1), the swing block (21) has the acting end, one end of the elastic member (22) is connected to the swing block (21), and the other end is connected to the smoke machine main body (1), when the oil cup assembly (3) is installed, the oil cup hook (32) is moved from the hanging interface into the hanging cavity (a), the limiting part (321) deforms the elastic member (22) through the acting end of the swing block (21), and after the oil cup hook (32) is installed in place in the hanging cavity (a), the elastic member (22) applies an installation direction force to the limiting part (321) through the acting end of the swing block (21). The number of the elastic members (22) is two, the ends of the two elastic members (22) away from each other are connected to the smoke machine main body (1), and the ends close to each other are connected to the swing block (21), when the oil cup assembly (3) is installed, the swing block (21) rotates, one side of the elastic member (22) is compressed, and the other side of the elastic member (22) is stretched, and after the limiting part (321) passes over the acting end of the swing block (21), the two sides of the elastic member (22) reset and apply an installation direction force to the limiting part (321) through the acting end of the swing block (21). The acting end of the swing block (21) has a V-shaped or arc-shaped cross section.

2. The oil cup mounting structure according to claim 1, characterized by The acting end has a first face (b) in the installation direction and a second face (c) away from the installation direction, when the oil cup assembly (3) is installed, the limiting part (321) presses the second face (c), and after the limiting part (321) passes over the acting end, the first face (b) presses the limiting part (321) in the installation direction.

3. The oil cup mounting structure according to claim 2, characterized by ​ 4. The oil cup mounting structure according to claim 2, characterized by ​ 5. The oil cup mounting structure according to claim 2, characterized by ​ 6. The oil cup mounting structure according to claim 2, characterized by The left and right sides of the smoke machine body (1) are connected with the blocking blocks (11), the hanging connection cavities (a) are arranged on the blocking blocks (11), the lower surfaces of the blocking blocks (11) are provided with the hanging connection interfaces, the swing block assemblies (2) are rotationally connected with the blocking blocks (11) and the acting ends of the swing block assemblies (2) extend into the hanging connection cavities (a), one end of the elastic member (22) is connected with the blocking block (11) and the other end of the elastic member (22) is connected with the swing block (21).

7. The oil cup mounting structure according to claim 6, characterized by The upper surfaces of the blocking blocks (11) are provided with the swing channels which are communicated with the hanging connection cavities (a), and the acting ends of the swing blocks (21) extend into the hanging connection cavities (a) through the swing channels.

8. The oil cup mounting structure according to claim 7, characterized by The swing block (21) comprises a rotation connecting part (211), an upper connecting part (212) and a lower acting part (213), the blocking block (11) is provided with a rotation connecting position (111), the rotation connecting position (111) is located above the swing channel, the rotation connecting part (211) is rotationally connected with the rotation connecting position (111), one end of the elastic member (22) is connected with the upper connecting part (212) and the other end of the elastic member (22) is connected with the blocking block (11), the lower acting part (213) extends into the hanging connection cavity (a) through the swing channel, and the lower acting part (213) has the acting end.

9. A hood-type ventilator using the oil cup mounting structure according to any one of claims 1 to 7, characterized by: The back plate assembly (4) is further arranged, the two sides of the smoke machine body (1) are provided with the section bars (12), the back plate assembly (4) is connected between the two section bars, the lower ends of the section bars (12) are provided with the blocking blocks (11), the hanging connection cavities (a) are arranged on the blocking blocks (11), and the swing block assemblies (2) are rotationally connected with the blocking blocks (11).

10. The range hood according to claim 9, wherein The side baffle assembly (5) is further arranged, the front sides of the section bars (12) are provided with the mounting grooves, the side baffle assembly (5) is connected in the mounting grooves, and the swing block assemblies (2) are connected with the lower ends of the section bars (12) and support the side baffle assembly (5) upwards.

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