Air conditioning device for crane operating room

Abstract

The present invention relates to the technical field of cranes, and discloses an air conditioning device for a crane operating room, which solves the problem that the accordion cover of a conventional clean room crane forms a positive pressure on the inner space, causing the metal dust inside to be easily discharged when the internal air is discharged. By starting the air pump and the dust removal box, the air pump sucks the air carrying metal dust that has just passed through the chain slot into the dust removal box through the horn cover, and the dust removal box filters the metal dust and discharges the clean air to the outside of the dust cover. Then, through the setting of the negative charge component, the floating metal dust is negatively charged when it approaches the negative charge component, and then adsorbed on the surface by the positive dust suction component. Subsequently, the positive dust suction component automatically scrapes the metal dust on the surface into the dust collection cover, thereby realizing automatic cleaning of the metal dust.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to an air conditioning device for a crane operating room. Background Art

[0002] Cleanroom cranes, also known as air purification cranes, are lifting equipment designed, manufactured, installed, commissioned, operated, and maintained specifically for cleanroom environments under specific environmental conditions. Cleanroom cranes have a wide range of applications in various fields, including microelectronics, ecology, biomedicine, and nanotechnology.

[0003] The structure of a clean room crane mainly includes a main beam, crane components, a boom, a hook and a control system. Common components of the boom include a hoist chain, etc. An accordion cover is often set on the periphery of the crane hoist chain to prevent the metal particles or dust generated by friction and wear during the movement of the crane hoist chain from spreading outside the machine. However, when the hoist chain suspends the hook up and down, the accordion cover will form positive or negative pressure on the space inside the cover, and the process will cyclically discharge internal air and inhale external air. When the accordion cover forms positive pressure on the internal space and discharges the internal air, it is easy to discharge the internal metal dust. Therefore, in actual use, it is necessary to reduce the up and down movement rate of the hoist chain lifting hook, reduce the laminar flow speed of the air, and avoid internal dust, but this is bound to affect the use efficiency of the clean room crane. Summary of the Invention

[0004] The purpose of the present invention is to provide an air conditioning device for a crane operating room, which solves the problem that the accordion cover installed on the outside of a conventional clean room crane forms a positive pressure on the inner space during use, causing the internal air to be discharged, which easily discharges the internal metal dust.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an air conditioning device for a crane operating room, comprising a main beam; a lifting mechanism for lifting objects on the lower side of the main beam, the lifting mechanism comprising a crane group on the lower side of the main beam, a hoist chain connected to the lower side of the crane group, a hanging platform connected to the lower side of the hoist chain, and a hanging hook provided on the lower side of the hanging platform; a dust cover is provided on the outer shell of the crane group, a first dust removal mechanism is provided on the outer shell of the hoist chain, a chain groove for the hoist chain to pass through is provided on the lower side of the dust cover, a second dust removal mechanism for removing dust is provided in the dust cover corresponding to the upper side of the chain groove, and a first dust removal mechanism for removing dust is provided on the inner side of the accordion cover;

[0006] The second dust removal mechanism includes a horn cover arranged above the chain slot, a dust removal box fixedly installed inside the dust cover, a ventilation pipe connected between the dust removal box and the horn cover, and an air pump connected to the ventilation pipe;

[0007] The first dust removal mechanism includes a positive dust suction component and a negative charge component arranged vertically in the accordion cover, the negative charge component being arranged between the positive dust suction component and the hoist chain, the positive dust suction component and the negative charge component being connected to a positive and negative power supply, respectively, forming an electric field between the positive dust suction component and the negative charge component, and a dust collecting cover being provided on the lower side of the positive dust suction component;

[0008] The accordion cover includes an outer keel and an inner keel, and the positive dust suction assembly includes a positive dust suction plate swingably connected to the inner keel. There are multiple positive dust suction plates, and the multiple positive dust suction plates are vertically stacked on the inner side of the dust cover. Flexible wires are arranged in series on one side of the multiple positive dust suction plates, and the flexible wires are connected to the positive power supply.

[0009] Preferably, the speaker cover is adapted along the length direction of the chain slot, and two are symmetrically arranged on both sides of the chain slot.

[0010] Preferably, pull ropes are respectively provided on the four corners of the upper surface of the hanging platform, a spring disk for elastically winding the pull rope is fixedly installed on the bottom surface of the dust cover, a through hole for the pull rope to pass through is provided on the lower surface of the dust cover, a limiting ring is fixedly provided at the inner corner of the inner keel, and the hanging platform moves through the limiting ring.

[0011] Preferably, the positive electrode dust suction plate includes an insulating plate, a metal plate is embedded in the side of the insulating plate close to the negatively charged component, an electrode connecting column is provided on the side of the insulating plate away from the metal plate, the electrode connecting column is arranged on the upper side of the insulating plate and is electrically connected to the metal plate, and the flexible wire is connected to the electrode connecting column.

[0012] Preferably, the lower side of the metal plate has a length from the lower side of the insulating plate, and the length is greater than the minimum height difference between two adjacent insulating plate tiles when they are stacked.

[0013] Preferably, a rubber scraper is provided on the lower surface of the insulating plate.

[0014] Preferably, an eccentric assembly is connected between the positive dust suction plate and the inner keel, and the eccentric assembly includes a mounting bracket fixedly connected to the inner keel, a bearing column is rotatably mounted on one side of the mounting bracket, the arc surface of the bearing column is fixedly connected to a cross bar, one end of the cross bar is fixedly connected to a fixing column, and the fixing column is fixedly connected to one side of the positive dust suction plate, and the overall center of gravity of the positive dust suction plate and the eccentric assembly is located on the side away from the negative charge component, and a push block is provided between the inner wall of the dust collecting hood and the lowest positive dust suction plate, and the push block is used to support the positive dust suction plate to tilt toward the direction of the negative charge component.

[0015] Preferably, the plurality of positive electrode dust collecting plates are suspended by the eccentric assembly and are arranged adjacent to each other in the vertical direction.

[0016] Preferably, the negative charge component includes a spring tube fixedly mounted on the upper surface of the hanging platform, a metal mesh is elastically wound on the inner side of the spring tube, one end of the metal mesh is fixedly connected to the lower surface of the dust cover, and the metal mesh is connected to the negative power supply.

[0017] Preferably, an inclined baffle is provided on the inner side of the dust collecting hood, and the inclined baffle is adapted to the direction in which the lower sides of multiple positive electrode dust collecting plates are tilted in the dust collecting hood. The lower side of the dust collecting hood is provided with a collection box that can be removed from the lower surface of the hanging platform.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention provides an air conditioning device for a crane operating room. When the accordion cover is folded, the air in the accordion cover is caused to carry dust and flow into the dust cover through the chain slot. The air pump and the dust removal box are started. The air pump draws the air carrying metal dust that has just passed through the chain slot into the dust removal box through the horn cover. The dust removal box filters the metal dust and discharges the clean air to the outside of the dust cover. Then, by setting a negatively charged component, the floating metal dust is negatively charged when it approaches the negatively charged component. After the metal dust is negatively charged, it will be adsorbed on the surface by the positive dust collection component. Subsequently, the upper positive dust collection plate will scrape the metal dust on the surface of the lower positive dust collection plate into the dust collection cover, thereby realizing automatic cleaning of the dust on the surface of the positive dust collection plate and collecting it in the dust collection cover, thereby collecting the metal dust in the accordion cover and reducing the concentration of the metal dust inside it. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of the dust cover and the accordion cover of the present invention;

[0022] Figure 3 Schematic diagram of the structure of the second dust removal mechanism of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the connection between the organ cover and the hanging platform of the present invention;

[0024] Figure 5 It is a partial structural diagram of the first dust removal mechanism of the present invention;

[0025] Figure 6 This is a schematic diagram of the inner keel-related connection structure of the present invention;

[0026] Figure 7 This is a schematic structural diagram of the eccentric assembly of the present invention;

[0027] Figure 8 It is a schematic diagram of the planar structure of the positive electrode dust collection assembly and the dust collecting hood of the present invention;

[0028] Figure 9 This is a schematic structural diagram of the positive electrode dust absorption plate of the present invention;

[0029] Figure 10 It is a schematic structural diagram of the dust collecting hood of the present invention.

[0030] In the figure: 1, main beam; 2, lifting mechanism; 21, hanging platform; 22, hoist chain; 23, crane assembly; 3, dust cover; 31, chain slot; 4, accordion cover; 41, outer keel; 42, inner keel; 43, limit ring; 5, second dust removal mechanism; 51, speaker cover; 52, ventilation pipe; 53, air pump; 54, dust removal box; 6, first dust removal mechanism; 61, positive electrode dust collection assembly; 611, positive electrode dust collection plate; 6111, insulation plate; 6 112. Metal plate; 6113. Rubber scraper; 6114. Electrode connecting column; 612. Flexible wire; 613. Eccentric assembly; 6131. ​​Mounting frame; 6132. Bearing column; 6133. Crossbar; 6134. Fixing column; 62. Dust hood; 621. Push block; 622. Oblique baffle; 623. Collection box; 63. Negative charge assembly; 631. Spring cylinder; 632. Metal mesh; 71. Spring disc; 72. Pull rope. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In order to further understand the content of the present invention, the present invention is described in detail with reference to the accompanying drawings.

[0033] Combine Figures 1-10 An air conditioning device for a crane operating room comprises a main beam 1; a hoisting mechanism 2 for hoisting objects on the lower side of the main beam 1, the hoisting mechanism 2 comprising a crane group 23 on the lower side of the main beam 1, a hoist chain 22 connected to the lower side of the crane group 23, a hanging platform 21 connected to the lower side of the hoist chain 22, and a hook provided on the lower side of the hanging platform 21; a dust cover 3 is provided on the outer shell of the crane group 23, a first dust removal mechanism 6 is provided on the outer shell of the hoist chain 22, a chain groove 31 for the hoist chain 22 to pass through is provided on the lower side of the dust cover 3, a second dust removal mechanism 5 for dust removal is provided in the dust cover 3 above the chain groove 31, and a first dust removal mechanism 6 for dust removal is provided on the inner side of the accordion cover 4;

[0034] The second dust removal mechanism 5 includes a bell cover 51 disposed above the chain slot 31, a dust removal box 54 fixedly mounted inside the dust cover 3, a ventilation pipe 52 connected between the dust removal box 54 and the bell cover 51, and an air pump 53 connected to the ventilation pipe 52;

[0035] The first dust removal mechanism 6 includes a positive dust suction component 61 and a negative charge component 63 arranged vertically in the accordion cover 4. The negative charge component 63 is arranged between the positive dust suction component 61 and the hoist chain 22. The positive dust suction component 61 and the negative charge component 63 are respectively connected to the positive and negative power supplies. An electric field is formed between the positive dust suction component 61 and the negative charge component 63. A dust collecting cover 62 is provided on the lower side of the positive dust suction component 61.

[0036] The accordion cover 4 includes an outer keel 41 and an inner keel 42. The positive dust suction assembly 61 includes a positive dust suction plate 611 swingably connected to the inner keel 42. There are multiple positive dust suction plates 611, and the multiple positive dust suction plates 611 are vertically stacked on the inner side of the dust cover 3. A flexible wire 612 is arranged in series on one side of the multiple positive dust suction plates 611, and the flexible wire 612 is connected to the positive power supply.

[0037] The above working principle and technical effect are as follows: the hoist chain 22 is lifted by the crane group 23, and further lifted by the lifting platform 21. The hook on the lower side of the lifting platform 21 is used to connect with the cargo. The dust cover 3 is used to cover the crane group 23, and the accordion cover 4 is used to cover the hoist chain 22. The dust cover 3 and the accordion cover 4 are used to isolate the internal metal dust from leaking. The outer keel 41 and the inner keel 42 on the accordion cover 4 are arranged to facilitate its folding.

[0038] When the hoist chain 22 lifts the accordion cover 4, the retraction and extension of the accordion cover 4 causes the pressure inside to change. When the accordion cover 4 is folded, the air inside the accordion cover 4 carrying dust flows through the chain slot 31 into the dust cover 3. The air pump 53 and the dust removal box 54 are started. The air pump 53 draws the air carrying metal dust that has just passed through the chain slot 31 into the dust removal box 54 through the bell cover 51. The dust removal box 54 filters the metal dust and discharges the clean air to the outside of the dust cover 3.

[0039] As for the metal dust generated by the friction and wear of the hoist chain 22 in the accordion cover 4, since the metal dust itself has weight, it is easy to fall downward when it is generated and gather at the bottom of the dust cover 3. Therefore, when the space on the lower side of the accordion cover 4 is close to the chain groove 31, a large amount of metal dust stored in the lower space is easy to blow out at the chain groove 31. Therefore, in order to reduce the concentration of metal dust in the accordion cover 4, especially the metal dust in the lower space of the accordion cover 4, the negative charge component 63 is set so that the floating metal dust is negatively charged when it approaches the negative charge component 63. After the metal dust is negatively charged, it will be adsorbed on the surface by the positive dust suction component 61;

[0040] When dust adheres to the surface of the positive electrode dust collection component 61, that is, the surface of the positive electrode dust collection plate 611, as the hoist chain 22 pulls the lifting platform 21 up, the outer keel 41 and the inner keel 42 on the accordion cover 4 are folded from bottom to top. The two adjacent positive electrode dust collection plates 611, the upper positive electrode dust collection plate 611 will scrape the metal dust on the surface of the lower positive electrode dust collection plate 611 into the dust collecting hood 62, thereby realizing automatic cleaning of the dust on the surface of the positive electrode dust collection plate 611 and collecting it in the dust collecting hood 62, thereby collecting the metal dust in the accordion cover 4 and reducing the concentration of metal dust inside it.

[0041] In the previous embodiment, the speaker cover 51 is adapted along the length direction of the chain slot 31 , and two speaker covers symmetrically located on both sides of the chain slot 31 are provided.

[0042] Specifically, the air inlets of the two horn covers 51 are arranged opposite to each other, and the hoist chain 22 that passes through the chain slot 31 and enters the dust cover 3 is placed between the two horn covers 51. The two horn covers 51 are used to fully cover the area around the chain slot 31, so that the metal dust can be fully sucked into the horn cover 51 when passing through the chain slot 31.

[0043] In the previous embodiment: pull ropes 72 are respectively provided on the four corners of the upper surface of the hanging platform 21, a spring disk 71 for elastically winding the pull rope 72 is fixedly installed on the bottom surface of the dust cover 3, a through hole for the pull rope 72 to pass through is provided on the lower surface of the dust cover 3, a limit ring 43 is fixedly provided at the inner corner of the inner keel 42, and the hanging platform 21 moves through the limit ring 43.

[0044] Specifically, the weight of the hanging platform 21 can elastically pull the pull rope 72 out of the spring disk 71. When the hanging platform 21 moves up and down, the pull rope 72 is elastically pulled by the spring disk 71 and is always in a vertically taut state. In this way, the limiting ring 43 is used to limit the multiple inner keels 42 to remain in the same vertical direction, thereby facilitating better stacking of the multiple positive electrode dust collection plates 611 for subsequent scraping of metal dust.

[0045] In the previous embodiment: the positive electrode dust suction plate 611 includes an insulating plate 6111, a metal plate 6112 is embedded in the side of the insulating plate 6111 close to the negative charge component 63, an electrode connecting column 6114 is provided on the side of the insulating plate 6111 away from the metal plate 6112, the electrode connecting column 6114 is provided on the upper side of the insulating plate 6111 and is electrically connected to the metal plate 6112, and the flexible wire 612 is connected to the electrode connecting column 6114.

[0046] Specifically, by setting the metal plate 6112 only on the side of the insulating plate 6111 close to the negatively charged component 63, the metal dust is only adsorbed on the side close to the negatively charged component 63, so that the other insulating plate 6111 above can concentrate the adsorbed metal dust and hang it down.

[0047] In the previous embodiment, the lower side of the metal plate 6112 has a length from the lower side of the insulating plate 6111 , and the length is greater than the minimum height difference between two adjacent insulating plates 6111 when they are stacked.

[0048] Specifically, when the insulating plate 6111 moves upward with the hanging platform 21, the two adjacent insulating plates 6111 are stacked to the maximum extent, and the lower side of the upper insulating plate 6111 can completely cover the metal plate 6112 on the side surface of the lower insulating plate 6111. When the dust is pushed to a point where it is no longer in contact with the metal plate 6112, it loses its adsorption force and can fall into the inner side of the dust collecting hood 62 under the action of gravity, thereby achieving complete cleaning of the metal dust adsorbed on the surface of the positive electrode dust collecting plate 611.

[0049] In the previous embodiment, a rubber scraper 6113 is provided on the lower surface of the insulating plate 6111 .

[0050] Specifically, the rubber scraper 6113 can form a better contact with the surface of the metal plate 6112 below, thereby better cleaning the surface of the metal plate 6112.

[0051] In the previous embodiment: an eccentric component 613 is connected between the positive dust suction plate 611 and the inner keel 42, the eccentric component 613 includes a mounting frame 6131 fixedly connected to the inner keel 42, a bearing column 6132 is rotatably installed on one side of the mounting frame 6131, the arc surface of the bearing column 6132 is fixedly connected to a cross bar 6133, one end of the cross bar 6133 is fixedly connected to a fixing column 6134, the fixing column 6134 is fixedly connected to one side of the positive dust suction plate 611, the overall center of gravity of the positive dust suction plate 611 and the eccentric component 613 is located on the side away from the negative charge component 63, a push block 621 is provided between the inner wall of the dust collecting cover 62 and the lowest positive dust suction plate 611, the push block 621 is used to support the positive dust suction plate 611 to tilt toward the direction of the negative charge component 63;

[0052] A plurality of positive electrode dust collecting plates 611 are suspended by the eccentric assembly 613 and arranged adjacent to each other in the vertical direction.

[0053] Specifically, when multiple positive dust suction plates 611 are closely adjacent to each other in sequence, the connection positions of the bearing columns 6132 and the mounting frames 6131 are correspondingly set, so that the multiple positive dust suction plates 611 are always in a parallel state. The positive dust suction plates 611 are suspended by the eccentric components 613 and pushed by the push blocks 621, so that the positive dust suction plates 611 tend to rotate toward the center of gravity. In this way, when the upper positive dust suction plate 611 scrapes the metal dust on the surface of the lower positive dust suction plate 611, it has more scraping force.

[0054] In the previous embodiment: the negative charge component 63 includes a spring tube 631 fixedly mounted on the upper surface of the hanging platform 21, a metal mesh 632 is elastically wound on the inside of the spring tube 631, one end of the metal mesh 632 is fixedly connected to the lower surface of the dust cover 3, and the metal mesh 632 is connected to the negative power supply.

[0055] Specifically, when the hanging platform 21 moves up and down, the spring barrel 631 can automatically elastically reel up the metal mesh 632 so that the metal mesh 632 remains taut and the metal dust comes into contact with it.

[0056] In the previous embodiment: an inclined baffle 622 is provided on the inner side of the dust collecting hood 62, and the inclined baffle 622 is adapted to the direction in which the lower sides of multiple positive electrode dust collecting plates 611 are tilted in the dust collecting hood 62, and a collecting box 623 that can be removed from the lower surface of the hanging platform 21 is provided on the lower side of the dust collecting hood 62.

[0057] Specifically, the metal dust that enters the inner side of the hanging platform 21 slides into the inner side of the collecting box 623 from the surface of the inclined baffle 622. The inclined baffle 622 can prevent the laminar air in the accordion cover 4 from bringing out the metal dust in the dust collecting cover 62, and the collecting box 623 is detachably arranged on the lower surface of the hanging platform 21, so as to facilitate timely cleaning of the metal dust stored inside.

[0058] Working principle: When the accordion cover 4 is pulled open, the positive electrode dust collection plate 611 is pulled open, and the metal mesh 632 is also pulled out. After the metal dust contacts the metal mesh 632, it is negatively charged and is immediately adsorbed on the surface of the positive electrode dust collection plate 611. When the accordion cover 4 is folded inside, the upper positive electrode dust collection plate 611 will scrape the surface of the lower positive electrode dust collection plate 611, and scrape the metal dust adsorbed on the surface into the dust collecting cover 62. For some of the metal dust that passes through the chain slot 31, the air pump 53 can suck the air containing metal dust into the dust removal box 54 through the horn cover 51. After the dust removal box 54 filters the metal dust, the clean air is discharged to the outside of the dust cover 3.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0060] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An air conditioning device for a crane operating room, comprising a main beam (1); a lifting mechanism (2) for lifting objects on the lower side of the main beam (1), the lifting mechanism (2) comprising a crane group (23) on the lower side of the main beam (1), a hoist chain (22) connected to the lower side of the crane group (23), a hanging platform (21) connected to the lower side of the hoist chain (22), a hanging hook provided on the lower side of the hanging platform (21); a dust cover (3) provided on the outer shell of the crane group (23), a first dust removal mechanism (6) provided on the outer shell of the hoist chain (22), characterized in that: A chain slot (31) for the hoist chain (22) to pass through is provided at the lower side of the dust cover (3); a second dust removal mechanism (5) for removing dust is provided in the dust cover (3) above the chain slot (31); an accordion cover (4) is provided below the dust cover (3); and a first dust removal mechanism (6) for removing dust is provided inside the accordion cover (4); The second dust removal mechanism (5) comprises a horn cover (51) arranged above the chain slot (31), a dust removal box (54) fixedly installed inside the dust cover (3), a ventilation pipe (52) connected between the dust removal box (54) and the horn cover (51), and an air pump (53) connected to the ventilation pipe (52); The first dust removal mechanism (6) comprises a positive dust suction component (61) and a negative charge component (63) which are arranged vertically in the accordion cover (4); the negative charge component (63) is arranged between the positive dust suction component (61) and the hoist chain (22); the positive dust suction component (61) and the negative charge component (63) are respectively connected to a positive and negative power supply; an electric field is formed between the positive dust suction component (61) and the negative charge component (63); and a dust collecting cover (62) is arranged on the lower side of the positive dust suction component (61); The accordion cover (4) comprises an outer keel (41) and an inner keel (42); the positive electrode dust suction assembly (61) comprises a positive electrode dust suction plate (611) swingably connected to the inner keel (42); a plurality of positive electrode dust suction plates (611) are provided; the plurality of positive electrode dust suction plates (611) are vertically arranged on the inner side of the dust cover (3) in a stacked manner; a flexible wire (612) is arranged in series on one side of the plurality of positive electrode dust suction plates (611); the flexible wire (612) is connected to a positive electrode power supply; An eccentric component (613) is connected between the positive electrode dust collecting plate (611) and the inner keel (42), and the eccentric component (613) includes a mounting frame (6131) fixedly connected to the inner keel (42), a bearing column (6132) is rotatably mounted on one side of the mounting frame (6131), a cross bar (6133) is fixedly connected to the arc surface of the bearing column (6132), and a fixing column (6134) is fixedly connected to one end of the cross bar (6133), and the fixing column (6134) is fixedly connected to one side of the positive electrode dust collecting plate (611), and the overall center of gravity of the positive electrode dust collecting plate (611) and the eccentric component (613) is located on a side away from the negative charge component (63), and a push block (621) is provided between the inner wall of the dust collecting cover (62) and the lowest positive electrode dust collecting plate (611), and the push block (621) is used to support the positive electrode dust collecting plate (611) to tilt in the direction of the negative charge component (63); The negative charge imparting component (63) comprises a coiled spring barrel (631) fixedly mounted on the upper surface of the hanging platform (21), a metal mesh (632) being elastically rolled up inside the coiled spring barrel (631), one end of the metal mesh (632) being fixedly connected to the lower surface of the dust cover (3), and the metal mesh (632) being connected to a negative power supply.

2. The air conditioning device for a crane operating room according to claim 1, characterized in that: The horn cover (51) is adapted to be arranged along the length direction of the chain slot (31), and two horn covers (51) are symmetrically arranged on both sides of the chain slot (31).

3. The air conditioning device for a crane operating room according to claim 1, characterized in that: The positive electrode dust collecting plate (611) comprises an insulating plate (6111), a metal plate (6112) is embedded in a side of the insulating plate (6111) close to the negative charge imparting component (63), an electrode connecting column (6114) is arranged on a side of the insulating plate (6111) away from the metal plate (6112), the electrode connecting column (6114) is arranged on the upper side of the insulating plate (6111) and is electrically connected to the metal plate (6112), and the flexible wire (612) is connected to the electrode connecting column (6114).

4. The air conditioning device for a crane operating room according to claim 3, characterized in that: The lower side of the metal plate (6112) has a length from the lower side of the insulating plate (6111), and the length is greater than the minimum height difference between two adjacent insulating plates (6111) when they are stacked.

5. The air conditioning device for a crane operating room according to claim 4, characterized in that: A rubber scraper (6113) is provided on the lower surface of the insulating plate (6111).

6. The air conditioning device for a crane operating room according to claim 1, characterized in that: The plurality of positive electrode dust collecting plates (611) are suspended by the eccentric assembly (613) and arranged adjacent to each other in a vertical direction.

7. The air conditioning device for a crane operating room according to claim 1, characterized in that: An inclined baffle (622) is provided inside the dust collecting hood (62), and the inclined baffle (622) is adapted to the direction in which the lower sides of the plurality of positive electrode dust collecting plates (611) are tilted in the inner tile stack of the dust collecting hood (62). A collection box (623) that can be removed from the lower surface of the hanging platform (21) is provided on the lower side of the dust collecting hood (62).

8. The air conditioning device for a crane operating room according to claim 1, characterized in that: Drawstrings (72) are respectively arranged at the four corners of the upper surface of the hanging platform (21); a coil spring disc (71) for elastically winding up the drawstring (72) is fixedly mounted on the bottom surface of the dust cover (3); a through hole for the drawstring (72) to pass through is arranged on the lower surface of the dust cover (3); a limit ring (43) is fixedly arranged at the inner corner of the inner keel (42); and the hanging platform (21) movably passes through the limit ring (43).

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