Skylight machine

Abstract

The present invention provides a rooftop crane, comprising a main frame; a lifting mechanism, the lifting mechanism being arranged on the main frame; an air outlet assembly, the air outlet assembly being arranged on the lifting mechanism, and the lifting mechanism being capable of driving the air outlet assembly to be lifted and lowered; and a support assembly, the support assembly being arranged on the main frame, and the support assembly being capable of providing a supporting force for the air outlet assembly, the direction of the supporting force being opposite to the direction of gravity. The rooftop crane provided by the present invention, by arranging the support assembly, allows the main frame to bear part of the gravity of the air outlet assembly, thereby effectively reducing the lifting force required to be provided by the lifting mechanism. When lifting an air outlet assembly of the same mass as in the prior art, the support assembly can significantly reduce the structural requirements of the lifting mechanism, thereby reducing the manufacturing difficulty of the lifting mechanism and reducing the overall structural size of the rooftop crane.

Description

Technical Field

[0001] The present invention relates to the technical field of air treatment equipment, in particular to a skylight machine. Background Art

[0002] A ceiling unit is a type of air conditioner that is embedded in the ceiling to reduce the space it occupies, and uses air outlets on the surface of the ceiling unit for heat exchange. Due to the limitations of the position of the air outlet, it can only discharge air in the set direction and cannot blow horizontally during cooling.

[0003] To enable horizontal blowing in cooling mode, existing technologies for ceiling fans use a solution that allows the air to flow along the wall. The air outlet assembly is configured as a liftable structure, with the main frame fixedly mounted on the circumferential outer side of the air outlet assembly. When the ceiling fan is operating, the air outlet assembly descends to a certain height, creating a height difference with the main frame. The air outlet assembly and the main frame, which are positioned outside the air outlet assembly, form an air outlet, and the fan blows air from the interior of the ceiling fan through the outlet. When the air conditioner is in cooling mode, the air outlet must be as parallel to the horizontal plane as possible to increase the air supply distance, thereby achieving waterfall-style cooling and improving user comfort.

[0004] However, the existing skylight machines all use motors as lifting mechanisms to drive the entire air outlet assembly to move. Due to the limited load-bearing capacity of the motor, technicians can only reduce the weight of the air outlet assembly or increase the number of motors to ensure the reliability of the lifting of the air outlet assembly. However, increasing the number of motors will inevitably increase the manufacturing cost and difficulty of the skylight machine. Reducing the weight of the air outlet assembly will inevitably reduce the function of the air outlet assembly, resulting in poor performance of the skylight machine. Summary of the Invention

[0005] In order to solve the technical problems of high manufacturing difficulty and poor air outlet effect in the existing technology of overhead cranes, a overhead crane is provided that utilizes a support component to bear part of the weight of the air outlet component to reduce the weight that the lifting mechanism needs to bear, thereby reducing the manufacturing difficulty and ensuring the air outlet effect.

[0006] A roof crane, comprising:

[0007] Main frame;

[0008] A lifting mechanism, the lifting mechanism being arranged on the main frame;

[0009] An air outlet component is provided on the lifting mechanism, and the lifting mechanism can drive the air outlet component to move up and down;

[0010] A support assembly is provided on the main frame, and the support assembly can provide a supporting force for the air outlet assembly, wherein the direction of the supporting force is opposite to the direction of gravity.

[0011] The air outlet assembly has a working position that is lowered to a predetermined height and forms a first air outlet with the main frame. The air outlet assembly has a first wind shield at the first air outlet position, and the main frame has a second wind shield at the first air outlet position. When the air outlet assembly is lowered to the working position, the first wind shield and the second wind shield cooperate to separate the return air outlet and the first air outlet, and the support assembly is arranged between the first wind shield and the second wind shield.

[0012] The upper edge of the first windshield portion is bent toward the second windshield portion to form a first bending portion, the upper edge of the second windshield portion is bent toward the first windshield portion to form a second bending portion, and the support assembly is arranged between the first bending portion and the second bending portion; or, the upper edge of the first windshield portion is bent toward the second windshield portion to form a first bending portion, the lower edge of the second windshield portion is bent toward the first windshield portion to form a third bending portion, and the support assembly is arranged between the first bending portion and the third bending portion.

[0013] A first boss is provided on the air outlet assembly, the main frame includes a first mounting structure above the first boss, the first end of the support assembly is provided on the first mounting structure, and the second end of the support assembly is provided on the first boss.

[0014] A first boss is provided on the air outlet assembly, the main frame includes a second mounting structure below the first boss, the first end of the support assembly is provided on the second mounting structure, and the second end of the support assembly is provided on the first boss.

[0015] The main frame is provided with a connecting piece, the upper end of the connecting piece is provided on the main frame, and the lower end of the connecting piece is bent in a direction away from the center of the main frame to form the second mounting structure.

[0016] The air outlet assembly has a working position that is lowered to a predetermined height and forms a first air outlet with the main frame. The air outlet assembly has a first wind shield at the first air outlet position, and the main frame has a second wind shield at the first air outlet position. When the air outlet assembly is lowered to the working position, the first wind shield and the second wind shield cooperate to separate the return air outlet and the first air outlet, and the second wind shield constitutes the connecting member.

[0017] In the vertical direction, the support assembly has a first end and a second end opposite to each other, the first end is arranged on the main frame, the second end is arranged on the air outlet assembly, and the second end can be away from or close to the first end.

[0018] The support assembly includes a deformable member, and the deformable member is deformed during the lifting and lowering process of the air outlet assembly.

[0019] The deformable member includes a spring, which is compressed or stretched during the lifting and lowering of the air outlet assembly; and / or the deformable member includes an airbag, which is squeezed or stretched in the vertical direction when the air outlet assembly descends.

[0020] The air outlet assembly includes an air outlet frame, a first air outlet is formed between the air outlet frame and the main frame, and the air outlet frame is independently raised and lowered.

[0021] The air outlet assembly includes an air outlet frame and an air return panel. A first air outlet is formed between the air outlet frame and the main frame. The air return panel is provided with a return air outlet. The air outlet frame and the air return panel are connected and rise and fall together.

[0022] An air outlet duct is formed in the main frame;

[0023] An air outlet assembly is movably mounted on the main frame, and the air outlet assembly is lowered to form a first air outlet between the main frame and the air outlet assembly;

[0024] The air outlet component is provided with at least one second air outlet, and the second air outlet is communicated with the air outlet duct.

[0025] When the air outlet component descends to form the first air outlet between the main frame, a distance is formed between the air outlet component and the main frame, and the distance forms an air supply duct. One end of the air supply duct is connected to the air outlet duct, and the other end of the air supply duct forms the first air outlet.

[0026] The main frame also includes a frame. When the air outlet component is lowered to form the first air outlet between the main frame, the air supply duct is formed between the air outlet component and the frame. On the installation plane of the main frame, the projection of the air outlet component and the projection of the frame at least partially overlap.

[0027] The skylight machine has a first air outlet mode, a second air outlet mode and a third air outlet mode;

[0028] When the skylight unit is in the first air outlet mode, the first air outlet is opened and the second air outlet is closed;

[0029] When the skylight unit is in the second air outlet mode, the first air outlet is open and some or all of the second air outlets are open;

[0030] When the skylight machine is in the third air outlet mode, the first air outlet is closed and some or all of the second air outlets are opened.

[0031] When the overhead unit is in cooling mode, the overhead unit is in the first air outlet mode or the second air outlet mode;

[0032] When the skylight unit is in the heating mode, the skylight unit is in the third air outlet mode or the second air outlet mode.

[0033] The skylight crane provided by the present invention, by providing a support assembly, has part of the gravity of the air outlet assembly borne by the main frame, effectively reducing the lifting force required to be provided by the lifting mechanism. When lifting an air outlet assembly of the same mass as in the prior art, the support assembly can significantly reduce the structural requirements of the lifting mechanism, thereby reducing the manufacturing difficulty of the lifting mechanism and reducing the overall structural size of the skylight crane. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic structural diagram of a roof hoist provided by an embodiment of the present invention;

[0035] Figure 2 Another structural schematic diagram of a roof crane provided by an embodiment of the present invention;

[0036] Figure 3 A schematic structural diagram of a roof lift provided by an embodiment of the present invention having a first boss;

[0037] Figure 4 Another structural schematic diagram of a roof lift provided by an embodiment of the present invention having a first boss;

[0038] Figure 5 Another structural schematic diagram of a roof crane provided by an embodiment of the present invention;

[0039] Figure 6 Another structural schematic diagram of a roof crane provided by an embodiment of the present invention;

[0040] Figure 7 Another structural schematic diagram of a roof lift provided by an embodiment of the present invention having a first boss;

[0041] Figure 8 Another structural schematic diagram of a roof lift provided by an embodiment of the present invention having a first boss;

[0042] In the picture:

[0043] 1. Main frame; 2. Lifting mechanism; 3. Air outlet assembly; 4. Support assembly; 41. First end; 42. Second end; 10. First air outlet; 32. First wind shield; 11. Second wind shield; 31. First boss; 12. First mounting structure; 13. Second mounting structure; 14. Air outlet duct; 33. Second air outlet; 15. Air supply duct; 16. Frame. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to 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.

[0045] like Figures 1 to 4 The skylight machine shown includes: a main frame 1; a lifting mechanism 2, which is arranged on the main frame 1; an air outlet component 3, which is arranged on the lifting mechanism 2, and the lifting mechanism 2 can drive the air outlet component 3 to rise and fall; a support component 4, which is arranged on the main frame 1, and the support component 4 can provide supporting force for the air outlet component 3, and the direction of the supporting force is opposite to the direction of gravity.

[0046] Part of the gravity of the air outlet assembly 3 is transferred to the main frame 1 through the support assembly 4, thereby overcoming the problem in the prior art that the gravity of the air outlet assembly 3 is borne by the lifting mechanism 2, which causes difficulty in manufacturing the lifting mechanism 2. When lifting an air outlet assembly 3 of the same mass as in the prior art, the support assembly 4 can significantly reduce the structural requirements of the lifting mechanism 2. Taking the lifting mechanism 2 as an example of a motor, the torque of the motor selected in this application can be significantly smaller than the torque of the motor in the prior art, and the torque of the motor is related to the size of the motor (the torque of a low-speed motor is large, the current density of a motor with large torque is large, the copper wire of a motor with large current density is thicker, and the volume of a motor with thick copper wire is large. Similarly, the torque of a high-speed motor is small, the current density of a motor with small torque is small, the copper wire of a motor with small current density is thinner, and the volume of a motor with thin copper wire is small). Therefore, the support assembly 4 in this application can effectively reduce the volume of the selected motor, and effectively reduce the volume of the lifting mechanism 2 and the ceiling machine while achieving the same air outlet effect.

[0047] It should be noted that the main frame 1 is the main load-bearing structure of the ceiling machine. When the ceiling machine is installed, the main frame 1 is used to be installed on the ceiling. Other structures can be directly or indirectly installed on the main frame 1 and fixed to the ceiling through the main frame 1. The ceiling machine has an internal unit part installed in the ceiling. The main frame 1 is connected to the internal unit. The air outlet assembly 3 is connected to the main frame 1. The internal unit has an internal unit exhaust port. The first end of the air outlet duct 14 of the main frame 1 is connected to the internal unit exhaust port. The air flow path is: return air port - evaporator - internal unit exhaust port - first end of the air outlet duct 14 - second end of the air outlet duct 14 - air outlet (first air outlet 10 and / or second air outlet 33) is blown out.

[0048] The air outlet assembly 3 has a working position that is lowered to a predetermined height and forms a first air outlet 10 with the main frame 1. The air outlet assembly 3 has a first wind shield 32 at the position of the first air outlet 10, and the main frame 1 has a second wind shield 11 at the position of the first air outlet 10. When the air outlet assembly 3 is lowered to the working position, the first wind shield 32 and the second wind shield 11 cooperate to separate the return air outlet and the first air outlet 10. The support assembly 4 is arranged between the first wind shield 32 and the second wind shield 11. By arranging the first wind shield 32 and the second wind shield 11, an air flow path is avoided between the first air outlet 10 and the return air outlet of the overhead crane, which affects the normal operation of the overhead crane. At the same time, the first wind shield 32 and the second wind shield 11 are used to avoid additional processing of other structures on the overhead crane to fix the support assembly 4, saving the internal space of the overhead crane. At the same time, the support assembly 4 can also support the gravity of the first wind shield 32 or the second wind shield 11 to a certain extent, further ensuring the reliability of the operation of the overhead crane.

[0049] The upper edge of the first windshield 32 bends toward the second windshield 11 to form a first bend, while the upper edge of the second windshield 11 bends toward the first windshield 32 to form a second bend. The support assembly 4 is disposed between the first and second bends. In other words, both the first windshield 32 and the second windshield 11 are L-shaped, with the two L-shapes arranged in mirror symmetry to achieve a sealing effect. The support assembly 4 can be either enclosed within the first windshield 32 and positioned outside the second windshield 11, or enclosed within the second windshield 11 and positioned outside the first windshield 32. The horizontal section of the L-shape provides a mounting location for the support assembly 4.

[0050] In another embodiment, the upper edge of the first windshield 32 is bent toward the second windshield 11 to form a first bend, and the lower edge of the second windshield 11 is bent toward the first windshield 32 to form a third bend. The support assembly 4 is disposed between the first and third bends. In this embodiment, both the first windshield 32 and the second windshield 11 are L-shaped, and the two L-shaped portions interlock to achieve a sealing effect. The support assembly 4 is now enclosed within the first windshield 32 and the second windshield 11, with the horizontal section of the L-shape providing a mounting location for the support assembly 4.

[0051] In order to avoid the interference of the support assembly 4 with the structures of the first windshield 32 and the second windshield 11, it is preferred that Figure 3 As shown, the air outlet assembly 3 is provided with a first boss 31, and the main frame 1 includes a first mounting structure 12 located above the first boss 31. The first end 41 of the support assembly 4 is provided on the first mounting structure 12, and the second end 42 of the support assembly 4 is provided on the first boss 31. In other words, the support assembly 4 generates an upward pulling force on the first boss 31 (the air outlet assembly 3). The first mounting structure 12 can be a corresponding surface of the main frame 1, or a structure provided on the main frame 1 that can fix the support assembly 4. For example, if the support assembly 4 is a spring, the first mounting structure 12 can be a fixed column protruding from the surface of the main frame 1, and one end of the spring can be sleeved on the fixed column to complete the fixed installation.

[0052] In order to avoid the interference of the support assembly 4 with the structures of the first windshield 32 and the second windshield 11, another preferred embodiment is as follows: Figure 4 As shown, the air outlet assembly 3 is provided with a first boss 31, and the main frame 1 includes a second mounting structure 13 below the first boss 31. The first end 41 of the support assembly 4 is provided on the second mounting structure 13, and the second end 42 of the support assembly 4 is provided on the first boss 31. In this case, the support assembly 4 generates an upward support force for the first boss 31 (the air outlet assembly 3). The second mounting structure 13 can be a corresponding surface of the main frame 1, or a structure provided on the main frame 1 that can fix the support assembly 4. For example, if the support assembly 4 is a spring, the second mounting structure 13 can be a fixed column protruding from the surface of the main frame 1, and one end of the spring can be sleeved on the fixed column to complete the fixed installation.

[0053] In other embodiments not shown, the air outlet assembly 3 may be provided with only the first boss 31 to fix the support assembly 4 .

[0054] A connecting piece is provided on the main frame 1 , the upper end of the connecting piece is provided on the main frame 1 , and the lower end of the connecting piece is bent in a direction away from the center of the main frame 1 to form a second mounting structure 13 .

[0055] The air outlet assembly 3 has a working position that is lowered to a predetermined height and forms a first air outlet 10 with the main frame 1. The air outlet assembly 3 has a first wind shield 32 at the position of the first air outlet 10, and the main frame 1 has a second wind shield 11 at the position of the first air outlet. When the air outlet assembly 3 is lowered to the working position, the first wind shield 32 and the second wind shield 11 cooperate to separate the return air port and the first air outlet 10, and the second wind shield 11 constitutes the connecting member.

[0056] In the vertical direction, the support assembly 4 has a first end 41 and a second end 42 opposite to each other. The first end 41 is arranged on the main frame 1, and the second end 42 is arranged on the air outlet assembly 3. The second end 42 can move away from or closer to the first end 41. In other words, as the air outlet assembly 3 moves, the second end 42 and the first end 41 can generate relative movement, thereby ensuring the support function for the air outlet assembly 3.

[0057] The support component 4 includes a deformable part. During the lifting and lowering process of the air outlet component 3, the deformable part is deformed. The deformation of the deformable part accumulates the energy generated during the movement of the air outlet component 3, and the accumulated energy further enhances the support effect on the air outlet component 3 and provides auxiliary force for the movement of the air outlet component 3.

[0058] Optionally, the deformable member includes a spring, and during the lifting and lowering process of the air outlet assembly 3, the spring is compressed or stretched.

[0059] Optionally, the deformable member includes an airbag, and when the air outlet assembly 3 descends, the airbag is squeezed or stretched in the vertical direction.

[0060] The air outlet assembly 3 includes an air outlet frame, which forms a first air outlet 10 between the air outlet frame and the main frame 1. The air outlet frame is raised and lowered independently. In other embodiments not shown, the air outlet assembly 3 includes an air outlet frame and a return air panel, which forms a first air outlet 10 between the air outlet frame and the main frame 1. The return air panel is provided with a return air outlet. The air outlet frame and the return air panel are connected and raised and lowered together.

[0061] In such Figures 5 to 8In another embodiment, the structure of the overhead unit is substantially the same as that of the above embodiment, differing only in that, in this embodiment, an air outlet duct 14 is formed within the main frame 1; an air outlet assembly 3 is arbitrarily mounted on the main frame 1, and upon lowering, the air outlet assembly 3 forms a first air outlet 10 between the main frame 1 and the air outlet assembly 3; and at least one second air outlet 33 is formed on the air outlet assembly 3, which communicates with the air outlet duct 14. The first air outlet 10 allows the overhead unit to discharge air remotely, even horizontally or obliquely upward, thereby overcoming the problem of cold air blowing downward and directly onto the human body in the prior art. The second air outlet 33 also enables the overhead unit to meet the requirements of oblique downward or even vertical downward air outlet. Furthermore, the combination of the first air outlet 10 and the second air outlet 33 increases the number of air outlet options for the overhead unit, thereby improving the air outlet efficiency, temperature regulation accuracy, and adjustment speed of the overhead unit.

[0062] When the air outlet assembly descends to form the first air outlet 10 between the air outlet assembly 3 and the main frame 1, a distance is formed between the air outlet assembly 3 and the main frame 1, and the distance forms an air supply duct 15. One end of the air supply duct 15 is connected to the air outlet duct 14, and the other end of the air supply duct 15 forms the first air outlet 10. The airflow in the air outlet duct 14 is guided by the air supply duct 15 and then blown out from the first air outlet 10. The air supply duct 15 is used to guide the vertical downward airflow in the air outlet duct 14 to be discharged in a generally horizontal direction away from the overhead crane, or even in a direction inclined upward relative to the horizontal plane, thereby achieving horizontal air discharge to the overhead crane.

[0063] In the prior art, all ceiling machines use air outlets opened on the surface facing the ground to discharge air. In order to change the direction of the air outlet, an air guide plate is set at the air outlet to guide the air flow. However, on the installation plane of the ceiling machine, the projection of the air guide plate does not coincide with the projection of the panel of the ceiling machine, so that the air guide plate has a poor effect of guiding the air flow, which ultimately reduces the air supply distance of the ceiling machine. For this reason, the main frame 1 of the present application also includes a frame 16. When the air outlet component 3 is lowered to form the first air outlet 10 between the main frame 1, the air supply duct 15 is formed between the air outlet component 3 and the frame 16. On the installation plane of the main frame 1 (such as the ceiling), the projection of the air outlet component 3 at least coincides with the projection of the frame 16. When the projection of the air outlet component 3 partially coincides with the projection of the frame 16, the air outlet component is substantially extended compared to the prior art, so that the horizontal blowing effect of the ceiling machine is good and the air supply distance is increased. When the ceiling machine opens the first air outlet 10, the air outlet component 3 gradually moves away from the main frame 1 to form the air supply duct 15. At this time, the corresponding part of the air outlet component 3 forms the lower side of the air supply duct 15. When the air flow passes through the air supply duct 15, the air flow flows in a horizontal direction or even blows out in an upward inclined direction under the guidance of the lower side of the air supply duct 15, so that the air supply distance of the ceiling machine is increased, thereby achieving the effect of horizontal air outlet.

[0064] As another embodiment, the projection of the air outlet assembly 3 completely overlaps with the projection of the frame 16. In this case, compared to the case where the projection of the air outlet assembly 3 partially overlaps with the projection of the frame 16, the air outlet assembly can be further extended, thereby achieving a better flat blowing effect of the overhead crane and further increasing the air supply distance. At the same time, when the overhead crane is in the stopped state, the air outlet assembly 3 is attached to the main frame 1, and the corresponding part of the air outlet assembly 3 is attached to the frame 16. When a person observes the overhead crane from the ground, he can only see the air outlet assembly 3 and cannot see the main frame 1, which effectively increases the aesthetics of the overhead crane.

[0065] As another embodiment, the projection of the air outlet component 3 exceeds the projection of the frame 16. In this case, compared with the case where the projection of the air outlet component 3 completely coincides with the projection of the frame 16, the air outlet component 3 can be further extended, thereby further increasing the flat blowing effect and air supply distance of the ceiling machine.

[0066] Preferably, the projection of the air outlet assembly 3 exceeds the projection of the main frame 1, so that the air outlet assembly 3 effectively increases the air guide size compared with the prior art, thereby achieving the purpose of increasing the air supply distance of the ceiling machine.

[0067] It should be noted that the skylight unit has the first air outlet mode, the second air outlet mode and the third air outlet mode:

[0068] When the skylight machine is in the first air outlet mode, the first air outlet 10 is opened and the second air outlet 33 is closed. At this time, the air flow in the air outlet duct 14 is all blown out through the first air outlet 10, forming horizontal air outlet or even oblique upward air outlet.

[0069] When the ceiling machine is in the second air outlet mode, the first air outlet 10 is opened and the second air outlet 33 is opened. At this time, part of the air flow in the air outlet duct 14 is blown out through the first air outlet 10, and the remaining part is blown out through the second air outlet 33, realizing surround air supply and improving the uniformity of room temperature.

[0070] When the skylight machine is in the third air outlet mode, the first air outlet 10 is closed and the second air outlet 33 is opened. At this time, the air flow in the air outlet duct 14 is all blown out through the second air outlet 33, forming an oblique downward air outlet or even a vertical downward air outlet.

[0071] The ceiling unit re-arranges the cooling mode and heating mode according to the above air outlet mode. When the ceiling unit is in cooling mode, the ceiling unit is in the first air outlet mode or the second air outlet mode. When the ceiling unit is in heating mode, the ceiling unit is in the third air outlet mode or the second air outlet mode.

[0072] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A roof crane, characterized in that: include: Main frame (1); A lifting mechanism (2), the lifting mechanism (2) being arranged on the main frame (1); An air outlet component (3), the air outlet component (3) being arranged on the lifting mechanism (2), and the lifting mechanism (2) being capable of driving the air outlet component (3) to move up and down; A support assembly (4), the support assembly (4) being arranged on the main frame (1), and the support assembly (4) being capable of providing a supporting force for the air outlet assembly (3), wherein the direction of the supporting force is opposite to the direction of gravity; The air outlet assembly (3) has a working position where it is lowered to a predetermined height and forms a first air outlet (10) with the main frame (1); the air outlet assembly (3) has a first wind shield (32) at the position of the first air outlet (10); the main frame (1) has a second wind shield (11) at the position of the first air outlet; when the air outlet assembly (3) is lowered to the working position, the first wind shield (32) and the second wind shield (11) cooperate to separate the return air port and the first air outlet (10); the support assembly (4) is arranged between the first wind shield (32) and the second wind shield (11); The upper edge of the first windshield (32) is bent toward the second windshield (11) to form a first bending portion, the upper edge of the second windshield (11) is bent toward the first windshield (32) to form a second bending portion, and the support assembly (4) is arranged between the first bending portion and the second bending portion; or, the upper edge of the first windshield (32) is bent toward the second windshield (11) to form a first bending portion, the lower edge of the second windshield (11) is bent toward the first windshield (32) to form a third bending portion, and the support assembly (4) is arranged between the first bending portion and the third bending portion.

2. The roof crane according to claim 1, characterized in that: A first boss (31) is provided on the air outlet assembly (3), the main frame (1) includes a first mounting structure (12) located above the first boss (31), the first end (41) of the support assembly (4) is provided on the first mounting structure (12), and the second end (42) of the support assembly (4) is provided on the first boss (31).

3. The roof crane according to claim 1, characterized in that: A first boss (31) is provided on the air outlet assembly (3), the main frame (1) includes a second mounting structure (13) located below the first boss (31), the first end (41) of the support assembly (4) is provided on the second mounting structure (13), and the second end (42) of the support assembly (4) is provided on the first boss (31).

4. The overhead crane according to claim 3, characterized in that: A connecting piece is provided on the main frame (1), the upper end of the connecting piece is provided on the main frame (1), and the lower end of the connecting piece is bent in a direction away from the center of the main frame (1) to form the second mounting structure (13).

5. The overhead crane according to claim 4, characterized in that: The air outlet assembly (3) has a working position in which it is lowered to a predetermined height and forms a first air outlet (10) with the main frame (1); the air outlet assembly (3) has a first wind shield (32) at the position of the first air outlet (10); the main frame (1) has a second wind shield (11) at the position of the first air outlet; when the air outlet assembly (3) is lowered to the working position, the first wind shield (32) and the second wind shield (11) cooperate to separate the return air port and the first air outlet (10); the second wind shield (11) constitutes the connecting member.

6. The overhead crane according to any one of claims 1 to 5, characterized in that: In the vertical direction, the support assembly (4) has a first end (41) and a second end (42) opposite to each other, the first end (41) being arranged on the main frame (1), the second end (42) being arranged on the air outlet assembly (3), and the second end (42) being able to be away from or close to the first end (41).

7. The overhead crane according to claim 6, characterized in that: The support assembly (4) comprises a deformable member, and the deformable member is deformed during the lifting and lowering process of the air outlet assembly.

8. The overhead crane according to claim 7, characterized in that: The deformable member comprises a spring, and during the lifting and lowering process of the air outlet assembly (3), the spring is compressed or stretched; and / or the deformable member comprises an air bag, and when the air outlet assembly (3) descends, the air bag is squeezed or stretched in the vertical direction.

9. The overhead crane according to claim 1, characterized in that: The air outlet assembly (3) comprises an air outlet frame, a first air outlet (10) is formed between the air outlet frame and the main frame, and the air outlet frame is independently raised and lowered.

10. The overhead crane according to claim 1, characterized in that: The air outlet assembly (3) comprises an air outlet frame and an air return panel, a first air outlet (10) is formed between the air outlet frame and the main frame, the air return panel is provided with an air return port, and the air outlet frame and the air return panel are connected and rise and fall together.

11. The overhead crane according to claim 1, characterized in that: An air outlet duct (14) is formed in the main frame (1); An air outlet component (3), the air outlet component (3) being movably mounted on the main frame (1), and the air outlet component (3) being lowered to form a first air outlet (10) between the main frame (1); At least one second air outlet (33) is provided on the air outlet component (3), and the second air outlet (33) is communicated with the air outlet duct (14).

12. The overhead crane according to claim 11, characterized in that: When the air outlet assembly is lowered to form the first air outlet (10) between the air outlet assembly and the main frame (1), a distance is formed between the air outlet assembly (3) and the main frame (1), and the distance forms an air supply duct (15). One end of the air supply duct (15) is connected to the air outlet duct (14), and the other end of the air supply duct (15) forms the first air outlet (10).

13. The overhead crane according to claim 12, characterized in that: The main frame (1) further includes a frame (16); when the air outlet assembly (3) is lowered to form the first air outlet (10) between the main frame (1), the air supply duct (15) is formed between the air outlet assembly (3) and the frame (16); and on the installation plane of the main frame (1), the projection of the air outlet assembly (3) and the projection of the frame (16) at least partially overlap.

14. The overhead crane according to claim 11, characterized in that: The skylight machine has a first air outlet mode, a second air outlet mode and a third air outlet mode; When the skylight machine is in the first air outlet mode, the first air outlet (10) is opened and the second air outlet (33) is closed; When the skylight machine is in the second air outlet mode, the first air outlet (10) is opened, and part or all of the second air outlets (33) are opened; When the skylight machine is in the third air outlet mode, the first air outlet (10) is closed, and some or all of the second air outlets (33) are opened.

15. The overhead crane according to claim 14, characterized in that: When the overhead unit is in cooling mode, the overhead unit is in the first air outlet mode or the second air outlet mode; When the skylight unit is in the heating mode, the skylight unit is in the third air outlet mode or the second air outlet mode.

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