Ventilation mechanism for freight elevator car

Abstract

The utility model discloses a ventilation mechanism for a freight elevator car, which comprises a car body, and a filter screen plate is detachably arranged at the top of the car body; a plurality of evenly-distributed second ventilation holes are formed in the two sides of the bearing platform in the lift car body. Shells are arranged at the positions, corresponding to the second ventilation holes, of the bottom of the lift car body; a rotationally connected second shaft rod is arranged in the shell; fan blades are fixedly connected to the second shaft rods; a plurality of first ventilation holes are formed in the outer side surfaces of the two shells; under the action of the fan blades, fresh air passively enters the lift car body from top to bottom, accumulated dust in the lift car body cannot be blown up, and dust can be directly sucked away from the bottom of the lift car body under the action of the fan blades, so that the interior of the lift car body is kept clean and tidy, goods cannot be polluted, bacteria cannot be bred, and the workshop environment cannot be affected.

Description

Technical Field

[0001] This utility model belongs to the technical field of freight elevator car, specifically, it relates to a ventilation mechanism for freight elevator cars. Background Technology

[0002] Freight elevators are elevator spaces specifically designed for transporting goods. They typically have a large load-bearing capacity and a more spacious interior to accommodate various goods. Their doors are usually large to facilitate the entry and exit of forklifts or other transport equipment, and the elevators operate at a slower speed to ensure the safe and smooth transport of goods. Freight elevators are widely used in warehouses, factories, shopping malls, and high-rise buildings for the vertical transport of heavy or bulk goods. During the transport process, the enclosed space inside the car can become stuffy or develop odors, which not only affects the riding experience of the staff but may also cause the goods to absorb odors, allowing bacteria to grow and affecting the freshness of the goods. Therefore, a fresh air system is needed to maintain air circulation inside the car.

[0003] Patent CN222498296U discloses an elevator car ventilation device. Through the coordinated use of a motor, main rotating rod, main gear, auxiliary rotating rod, auxiliary gear, fan blades, and brush plate, it enhances air convection within the car and improves the ventilation effect. At the same time, the brush plate is rotated by the main rotating rod, which sweeps away dust from the fine filter plate, achieving self-cleaning and preventing the fine filter plate from becoming clogged during long-term use, thus avoiding the need for frequent replacement of the fine filter plate.

[0004] However, in the above-mentioned patented technical solutions, since the fan blades blow air from the bottom upwards, while supplying fresh air to the inside of the car, they also blow up the dust accumulated at the bottom of the car. This not only affects the respiratory health of the passengers, but also causes the dust to fall on the goods and generate bacteria, which has certain limitations. Utility Model Content

[0005] To address the technical problem in existing technologies where fan blades blow air upwards from the bottom, causing dust to rise from the bottom of the elevator car, affecting the respiratory health of passengers and leading to dust settling on goods and generating bacteria, this utility model provides a ventilation mechanism for freight elevator cars.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A ventilation mechanism for a freight elevator car includes a car body, a filter screen detachably mounted on the top of the car body; multiple evenly distributed second ventilation holes on both sides of the carrying platform inside the car body; a housing is provided at the bottom of the car body corresponding to the positions of the second ventilation holes; a rotatably connected second shaft is provided inside the housing; fan blades are fixedly connected to the second shaft; and multiple first ventilation holes are provided on the outer sides of both housings.

[0008] Furthermore, a second gear is rotatably connected to the second shaft; a chain is jointly provided on the second gear on the same side; and a second motor is fixedly installed at the bottom of the car body.

[0009] Furthermore, the two corresponding second shafts are connected to a first shaft; a first gear is rotatably connected to the first shaft; and a third gear is rotatably connected to the output end of the second motor.

[0010] Furthermore, ventilation windows are provided on the car body corresponding to the position of the lower surface of the filter screen.

[0011] Furthermore, two second vertical plates are provided at the bottom of the car body; the second vertical plates are parallel to the first shaft and are located between the two shells; a first vertical plate is provided on the outer side of each of the two second vertical plates; a base plate is fixedly connected to the bottom of the first vertical plate, and the two shells are fixedly mounted on the base plate.

[0012] Furthermore, the first upright plate and the second upright plate are fixedly connected by bolts.

[0013] Furthermore, the two first uprights, the two shells, the car body support platform, and the bottom plate together form a closed cavity.

[0014] Furthermore, a brush is attached to the filter screen; a reciprocating screw is located on the top of the car body corresponding to one side of the filter screen; a first motor is fixedly installed at one end of the reciprocating screw; a guide rod is fixedly installed on the top of the car body; a second connecting ring is located on the reciprocating screw corresponding to the position of the brush, and the second connecting ring is threadedly connected to the reciprocating screw; the second connecting ring is fixedly connected to the brush; and the first connecting ring is slidably connected to the guide rod corresponding to the position of the brush.

[0015] Furthermore, both ends of the reciprocating screw and the guide rod are respectively provided with a first fixing ring; the first fixing ring is fixedly connected to the top of the car body; the first fixing ring is fixedly connected to the guide rod and rotatably connected to the reciprocating screw.

[0016] The beneficial effects of this utility model are:

[0017] 1. Under the action of the fan blades, fresh air passively enters the car body from top to bottom. The dust inside the car body will not be blown up. Furthermore, under the action of the fan blades, the dust can be directly drawn away from the bottom of the car body, keeping the inside of the car body clean and tidy, and preventing contamination of goods, bacterial growth, and impact on the workshop environment.

[0018] 2. The first motor of this utility model works in conjunction with the reciprocating lead screw to drive the brush to reciprocate, thereby cleaning the dust on the filter screen. This effectively prevents the filter screen from becoming clogged during long-term use, thus eliminating the need for frequent replacement of the filter screen, extending the maintenance cycle of the filter screen, and reducing the workload of operators. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a cross-sectional schematic diagram of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the ventilation window structure in this utility model;

[0022] Figure 4 This is a schematic diagram of the fan blade structure in this utility model;

[0023] Figure 5 This is a schematic diagram of the reciprocating lead screw in this utility model;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Car body; 2. Filter screen; 3. Brush; 4. First fixing ring; 5. Reciprocating screw; 6. Guide rod; 7. First connecting ring; 8. Second connecting ring; 9. First motor; 10. Housing; 11. First upright plate; 12. Bolt; 13. Second ventilation hole; 14. Second upright plate; 15. Ventilation window; 16. First ventilation hole; 17. First shaft; 18. Second fixing ring; 19. Fan blade; 20. First gear; 21. Second gear; 22. Second motor; 23. Third fixing ring; 24. Floor plate; 25. Chain; 26. Second shaft; 27. Third gear. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-3 As shown, a ventilation mechanism for a freight elevator car includes a car body 1; a filter screen 2 is detachably installed at the center of the top of the car body 1, which is used to filter fresh air entering the car body 1 from the elevator shaft; a brush 3 is attached to the filter screen 2, which is used to clean dust on the screen and prevent the filter screen 2 from becoming clogged during long-term use; a reciprocating screw 5 is installed on the top of the car body 1 corresponding to one side of the filter screen 2; a first fixing ring 4 is provided at both ends of the reciprocating screw 5, and the reciprocating screw 5 is rotatably connected to the first fixing ring 4, which is used to fix the reciprocating screw 5 to the top of the car body 1; the first fixing ring 4 is fixedly connected to the top of the car body 1.

[0028] A first motor 9 is fixedly installed at one end of a reciprocating screw 5, and the output end of the first motor 9 is fixedly connected to the reciprocating screw 5. A second connecting ring 8 is provided on the reciprocating screw 5 corresponding to the position of the brush 3. The second connecting ring 8 is threadedly connected to the reciprocating screw 5 and is used to connect the brush 3 and the reciprocating screw 5. The second connecting ring 8 is fixedly connected to the brush 3. A guide rod 6 is provided on the top of the car body 1 corresponding to the position of the reciprocating screw 5. A first fixing ring 4 is also provided at both ends of the guide rod 6, and the guide rod 6 is fixedly connected to the top of the car body 1 through the first fixing ring 4. The first fixing ring 4 is fixedly connected to the guide rod 6. A first connecting ring 7 is slidably connected on the guide rod 6 corresponding to the position of the brush 3. The guide rod 6 is used to drive the brush 3 to move horizontally in the longitudinal direction better. The first connecting ring 7 is fixedly connected to the second connecting ring 8.

[0029] A ventilation window 15 is provided on the car body 1 corresponding to the lower surface of the filter screen 2. The ventilation window 15 is detachably installed on the top of the car body 1 to support and fix the filter screen 2. Multiple evenly distributed second ventilation holes 13 are provided on both sides of the support platform inside the car body 1. These ventilation holes are used to facilitate the entry of fresh air into the bottom of the car body 1.

[0030] Please see Figure 1 , Figure 2 as well as Figure 4 As shown, a housing 10 is provided at the bottom of the car body 1 at the position corresponding to the second ventilation hole 13. The housing 10 has a rectangular structure and the length of the housing 10 is the same as the width of the car body 1. Multiple (five in this embodiment) rotatably connected second shafts 26 are provided inside the housing 10. A second fixing ring 18 is rotatably connected to each second shaft 26, and the second shaft 26 is fixedly connected to the bottom of the housing 10 via the second fixing ring 18.

[0031] Each of the second shafts 26 is fixedly connected with a fan blade 19, which is used to exhaust the air inside the car body 1 from the bottom of the car body 1 into the elevator shaft; each of the second shafts 26 on the same side is rotatably connected with a second gear 21; a chain 25 is provided on the second gear 21, which is used to drive multiple second gears 21 to rotate synchronously; multiple first ventilation holes 16 are opened on the outer side of both housings 10, which are used to facilitate the exhaust of air inside the car body 1.

[0032] Two corresponding second shafts 26 are connected to a first shaft 17; a first gear 20 is rotatably connected to the first shaft 17; a second motor 22 is fixedly installed at the bottom of the car body 1 via a third fixing ring 23; a third gear 27 is rotatably connected to the output end of the second motor 22, and the third gear 27 meshes with the first gear 20.

[0033] Two second upright plates 14 are also provided at the bottom of the car body 1; the second upright plates 14 are parallel to the first shaft 17 and are located between the two housings 10; a first upright plate 11 is provided on the outer side of each of the two second upright plates 14; a base plate 24 is fixedly connected to the bottom of the first upright plate 11 and the two housings 10 are fixedly mounted on the base plate 24; the two first upright plates 11, the two housings 10, the car body 1 bearing platform and the base plate 24 together form a closed cavity to protect the second motor 22; the first upright plates 11 and the second upright plates 14 are fixedly connected by bolts 12, which can facilitate the maintenance and repair work of the operators.

[0034] To facilitate understanding of the above-mentioned technical solution of this utility model, the working principle or operation method of this utility model in actual process will be described in detail below:

[0035] When the freight elevator is running, the second motor 22 operates normally. The second motor 22 drives the first shaft 17 through the cooperation of the first gear 20 and the third gear 27. At this time, since the first shaft 17 is connected to two of the second shafts 26, the second shafts 26 are mutually driven through the cooperation of the second gear 21 and the chain 25. Therefore, the first shaft 17 can drive all the second shafts 26 to rotate synchronously. Correspondingly, all the fan blades 19 inside the housing 10 rotate synchronously with the second shafts 26, thereby starting to draw air from the inside of the car body 1 through the second ventilation hole 13 and discharge the drawn air through the first ventilation hole 16, thereby achieving the purpose of expelling the turbid air and dust inside the car body 1. Furthermore, when the elevator door of the car body 1 is closed, the inside of the car is a semi-enclosed space. Therefore, after the air is discharged by the fan blades 19, fresh air will be continuously drawn in from the filter plate 2, and the filter plate 2 will filter the incoming fresh air to ensure air quality.

[0036] It is worth noting that, since the fresh air passively enters the interior of the car body 1 from top to bottom, achieving air convection, the dust inside the car body 1 will not be blown up. Furthermore, under the action of the fan blades 19, the dust can be directly drawn away from the bottom of the car body 1, keeping the interior of the car body 1 clean and tidy, and preventing contamination of goods, bacterial growth, and impact on the workshop environment.

[0037] Furthermore, when the filter screen 2 needs cleaning, the operator can start the first motor 9. The first motor 9 works in conjunction with the reciprocating screw 5 to drive the brush 3 to reciprocate, thereby cleaning the dust on the filter screen 2. This effectively prevents the filter screen 2 from becoming clogged during long-term use, thus eliminating the need for frequent replacement of the filter screen 2, extending the maintenance cycle of the filter screen 2, and reducing the workload of the operator.

[0038] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A ventilation mechanism for a freight elevator car, comprising a car body (1), characterized in that: The top of the car body (1) is detachably equipped with a filter screen (2); multiple evenly distributed second ventilation holes (13) are provided on both sides of the bearing platform inside the car body (1); a housing (10) is provided at the bottom of the car body (1) corresponding to the position of the second ventilation hole (13); a second shaft (26) is provided inside the housing (10); a fan blade (19) is fixedly connected to the second shaft (26); multiple first ventilation holes (16) are provided on the outer side of both housings (10).

2. A ventilation mechanism for a freight elevator car according to claim 1, characterized in that: A second gear (21) is rotatably connected to the second shaft (26); a chain (25) is provided on the second gear (21) on the same side; a second motor (22) is fixedly provided at the bottom of the car body (1).

3. A ventilation mechanism for a freight elevator car according to claim 2, characterized in that: The two corresponding second shafts (26) are connected by a first shaft (17); a first gear (20) is rotatably connected to the first shaft (17); and a third gear (27) is rotatably connected to the output end of the second motor (22).

4. A ventilation mechanism for a freight elevator car according to claim 1, characterized in that: The car body (1) is provided with a ventilation window (15) at a position corresponding to the lower surface of the filter screen (2).

5. A ventilation mechanism for a freight elevator car according to claim 1, characterized in that: The bottom of the car body (1) is also provided with two second upright plates (14); the second upright plates (14) are parallel to the first shaft (17) and the second upright plates (14) are located between the two shells (10); the outer sides of the two second upright plates (14) are provided with first upright plates (11); the bottom of the first upright plate (11) is fixedly connected to a base plate (24), and the two shells (10) are fixedly mounted on the base plate (24).

6. A ventilation mechanism for a freight elevator car according to claim 5, characterized in that: The first upright plate (11) and the second upright plate (14) are fixedly connected by bolts (12).

7. A ventilation mechanism for a freight elevator car according to claim 5, characterized in that: The two first upright plates (11), the two shells (10), the car body (1) support platform and the bottom plate (24) together form a closed cavity.

8. A ventilation mechanism for a freight elevator car according to claim 1, characterized in that: A brush (3) is attached to the filter screen (2); a reciprocating screw (5) is provided on the top of the car body (1) at a position corresponding to one side of the filter screen (2); a first motor (9) is fixedly provided at one end of the reciprocating screw (5); a guide rod (6) is fixedly provided on the top of the car body (1); a second connecting ring (8) is provided on the reciprocating screw (5) at a position corresponding to the brush (3), and the second connecting ring (8) is threadedly connected to the reciprocating screw (5); the second connecting ring (8) is fixedly connected to the brush (3); a first connecting ring (7) is slidably connected on the guide rod (6) at a position corresponding to the brush (3).

9. A ventilation mechanism for a freight elevator car according to claim 8, characterized in that: Both ends of the reciprocating screw (5) and the guide rod (6) are respectively provided with a first fixing ring (4); the first fixing ring (4) is fixedly connected to the top of the car body (1); the first fixing ring (4) is fixedly connected to the guide rod (6) and rotatably connected to the reciprocating screw (5).

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