Elevator ceiling ventilation structure

Abstract

The utility model is suitable for the technical field of fan filter units, and provides an elevator ceiling ventilation structure which comprises a ventilation box, an efficient filter box connected with the ventilation box, a protection mechanism installed on the ventilation box and a limiting mechanism. When the protective mechanism is disassembled, two movable plates in a plurality of fixing units can be driven to move relatively, round rods connected with the movable plates move along with the movable plates, when limiting protrusions are inserted into limiting grooves, the screen frame can be fixed, and when the limiting protrusions are separated from the limiting grooves, the protective mechanism can be disassembled by pulling the screen frame upwards. Compared with a screw installation mode in the prior art, the limiting mechanism has the advantages of being easy to disassemble and assemble, convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of fan filter units, in particular to an elevator ceiling ventilation structure. Background Art

[0002] An elevator is a type of transportation equipment that transports pedestrians or goods vertically. Elevators serve buildings with specified floors. A vertical elevator has a car to facilitate passengers entering and exiting or loading and unloading goods. The car part of a vertical elevator includes a car frame and a car body. The ceiling of the car body needs to be designed with a ventilation structure.

[0003] In the prior art, the filter screen of the ceiling ventilation structure is usually fixed and installed by means of screws. When the filter screen needs to be disassembled and cleaned, maintenance personnel are required to use specific wrenches and other tools to disassemble it. The operation is highly limited and it is inconvenient to disassemble and assemble. Therefore, it is necessary to design corresponding technical solutions to solve the existing technical problems. Utility Model Content

[0004] The utility model aims to provide an elevator ceiling ventilation structure to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] The invention relates to an elevator ceiling ventilation structure, comprising a car body and a ventilation box installed on the car body, wherein an induced draft fan is installed in the ventilation box, and a mesh frame is installed on the upper and lower sides of the induced draft fan of the ventilation box, a filter is installed in the mesh frame, and the filter also includes a limiting mechanism, the filter can be detachably installed in the ventilation box through the limiting mechanism, the limiting mechanism comprises a plurality of fixed units arranged in the ventilation box and a driving unit for driving the plurality of fixed units to operate synchronously, the fixed unit comprises a supporting plate, a movable plate and a round rod, the supporting plate is fixedly installed on the inner wall of the ventilation box, and a rectangular hole is symmetrically provided on the supporting plate, the movable plate is slidably provided in the rectangular hole, and a round rod is fixedly provided on the top of the movable plate, and limiting protrusions are symmetrically provided on the two round rods, and a sliding groove symmetrically provided on the bottom surface of the mesh frame is symmetrically provided with a sliding groove that slidably cooperates with the round rod, and a limiting groove is provided at the end of the sliding groove that plugs and cooperates with the limiting protrusion, and the driving unit is used to provide power for the relative movement of two of the movable plates in the plurality of fixed units.

[0007] As a further solution of the utility model: the driving unit includes a bidirectional screw rod with the same number as the fixed unit, the bidirectional screw rod is rotatably arranged on the bottom surface of the support plate, two adjacent bidirectional screw rods are connected by a gear set, and threaded sleeves are symmetrically installed on the two threaded parts on the bidirectional screw rod, and the movable plate is fixedly connected to the threaded sleeve.

[0008] As a further solution of the utility model: the driving unit also includes a protection module, which includes a rotating shaft, a first spring and a fixed block. The rotating shaft is movably mounted on the side wall of the ventilation box through the first spring, and a handwheel is fixedly provided at one end of the rotating shaft located outside the ventilation box, and a clamping block is fixedly installed at the other end. The fixed block is fixedly installed at the end of one of the bidirectional screw rods, and a clamping groove is opened on the fixed block to be plugged into and cooperate with the clamping block.

[0009] As a further solution of the utility model: a plurality of second springs are embedded on the top surface of the support plate.

[0010] As a further solution of the utility model: one end of the limiting protrusion is movably inserted into the end of the round rod, the other end is provided with a wedge-shaped groove, and a third spring is further provided between the limiting protrusion and the inner wall of the round rod.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a limiting mechanism. When the driving unit in the limiting mechanism is in operation, it can drive two movable plates in the multiple fixed units to move relative to each other, and the round rod connected to the movable plates moves therewith. When the limiting protrusion is inserted into the limiting groove, the screen frame can be fixed. When the limiting protrusion is separated from the limiting groove, the screen frame can be pulled upward to realize the disassembly of the protective mechanism. Compared with the installation method by screws in the prior art, the limiting mechanism has the advantages of simple disassembly and assembly, convenience and speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of an elevator ceiling ventilation structure;

[0014] Figure 2 for Figure 1 A magnified view of the central ventilation box;

[0015] Figure 3 for Figure 2 A top view of the cross section of the central ventilation box;

[0016] Figure 4 for Figure 2 A partial side cross-sectional view of the central ventilation box;

[0017] Figure 5 for Figure 4 Enlarged view of point A in the middle;

[0018] In the figure: 1-car body, 2-ventilation box, 3-net frame, 4-filter screen, 5-support plate, 6-movable plate, 7-round rod, 8-limiting protrusion, 9-slide groove, 10-limiting groove, 11-bidirectional screw rod, 12-threaded sleeve, 13-gear set, 14-rotating shaft, 15-spring, 16-handwheel, 17-block, 18-fixed block, 19-slot, 20-second spring, 21-third spring. DETAILED DESCRIPTION

[0019] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0020] Example 1

[0021] See also Figure 1-5 , an elevator ceiling ventilation structure, including a car body 1 and a ventilation box 2 installed on the car body, an induced draft fan is installed in the ventilation box 2, and a mesh frame 3 is installed on the upper and lower sides of the induced draft fan of the ventilation box 2, a filter 4 is installed in the mesh frame 3, and also includes a limiting mechanism, the filter 4 can be detachably installed in the ventilation box 1 through the limiting mechanism, the limiting mechanism includes a plurality of fixed units arranged in the ventilation box 1 and a driving unit for driving the plurality of fixed units to operate synchronously, the fixed unit includes a support plate 5, a movable plate 6 and a round rod 7, the support plate 5 is fixedly installed on the inner wall of the ventilation box 1, and rectangular holes are symmetrically opened on the support plate 5, the movable plate 6 is slidably arranged in the rectangular hole, and a round rod 7 is fixedly arranged on the top of the movable plate 6, and two round rods 7 are symmetrically arranged The limiting protrusion 8, the bottom surface of the net frame 3 is symmetrically provided with a slide groove 9 that slides with the round rod 7, and the end of the slide groove 9 is provided with a limiting groove 10 that plugs and cooperates with the limiting protrusion 8. The driving unit is used to provide power for the relative movement of two of the movable plates 6 in the multiple fixed units. By setting a limiting mechanism, when the driving unit in the limiting mechanism is in operation, it can drive the two movable plates 6 in the multiple fixed units to move relative to each other, and the round rod 7 connected to the movable plate 6 moves therewith. When the limiting protrusion 8 is inserted in the limiting groove 10, the net frame 3 can be fixed. When the limiting protrusion 8 is separated from the limiting groove 10, the net frame 3 can be pulled upward to realize the removal of the protective mechanism. Compared with the method of installing by screws in the prior art, the limiting mechanism has the advantages of simple disassembly and assembly, convenience and speed.

[0022] Among them, the driving unit includes a bidirectional screw rod 11 of the same number as the fixed unit, and the bidirectional screw rod 11 is rotatably arranged on the bottom surface of the support plate 5. Two adjacent bidirectional screw rods 11 are connected by a gear set 13, and threaded sleeves 12 are symmetrically installed on the two threaded parts of the bidirectional screw rod 11, and the movable plate 6 is fixedly connected to the threaded sleeve 12.

[0023] In addition, the driving unit also includes a protection module, which includes a rotating shaft 14, a first spring 15 and a fixed block 18. The rotating shaft 14 is movably mounted on the side wall of the ventilation box 1 through the first spring 15, and a hand wheel 16 is fixedly arranged at one end of the rotating shaft 14 outside the ventilation box 1, and a clamping block 17 is fixedly arranged at the other end. The fixed block 18 is fixedly mounted at the end of one of the two-way screw rods 11, and a clamping slot 19 is provided on the fixed block 18 to be plugged and matched with the clamping block 17. By setting the protection module, when multiple two-way screw rods need to be driven, When the rod 11 rotates, it is first necessary to press the hand wheel 16 so that the block 17 on the rotating shaft 14 is inserted into the slot 19. At this time, by turning the hand wheel 16 again, multiple bidirectional screw rods 11 can be driven to rotate at the same time. When rotation is not required, the moment the hand wheel 16 is released, the rotating shaft 14 moves in the opposite direction under the action of the spring, thereby separating the block 17 from the slot 19, effectively preventing the rotating wheel from rotating together with the bidirectional screw rods 11 when it is rotated by an unexpected external force, thereby further improving the practicality of the limiting mechanism.

[0024] It is necessary to explain that the cross-sectional shape of the block 17 can be a triangle, a quadrilateral, a pentagon or other structures, which will not be described in detail in this application.

[0025] Working principle: When the protective mechanism needs to be disassembled, first press the handwheel 16, and then turn the handwheel 16. When the handwheel 16 drives one of the two-way screws 11 to rotate, the remaining two-way screws 11 are rotated at the same time through the transmission of the gear set 13. When the two threaded sleeves 12 on the two-way screw 11 are relatively close, the two limiting protrusions 8 are driven to separate from the limiting grooves 10 on the screen frame 3. At this time, the screen frame 3 can be removed from the ventilation box 1 by pulling it upwards. Conversely, when the screen frame 3 needs to be installed, first align the screen frame 3 with the opening of the ventilation box 1, and then press and reversely turn the handwheel 16. At this time, the limiting protrusion 8 is reinserted into the limiting groove 10, and the screen frame 3 can be quickly fixed.

[0026] Example 2

[0027] This embodiment is improved on the basis of embodiment 1, specifically:

[0028] A plurality of second springs 20 are also embedded in the top surface of the support plate 5. By providing the second springs 20, at the moment when the limiting protrusion 8 is separated from the limiting groove 10, the second springs 20 can drive the screen frame 3 to bounce upward for a certain distance, and part of the frame body of the screen frame 3 protrudes out of the ventilation box 1, further facilitating the disassembly of the screen frame 3.

[0029] Furthermore, one end of the limiting protrusion 8 is movably inserted into the end of the round rod 7, and the other end is provided with a wedge-shaped groove, and a third spring 21 is also provided between the limiting protrusion 8 and the inner wall of the round rod 7. By providing the third spring 21 and the wedge-shaped groove, when the distance between the two round rods 7 is at a maximum value, when installing the screen frame 3, it is only necessary to press down the screen frame 3, and the limiting protrusion 8 can be smoothly inserted into the limiting groove 10, without pressing down and turning the hand wheel 16 in advance, thereby reducing the operation steps and further facilitating the installation of the screen frame 3.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An elevator ceiling ventilation structure, comprising a car body (1) and a ventilation box (2) mounted on the car body, an induced draft fan being mounted in the ventilation box (2), and mesh frames (3) being mounted above and below the induced draft fan of the ventilation box (2), a filter screen (4) being mounted in the mesh frame (3), characterized in that: The invention also comprises a limiting mechanism, wherein the filter screen (4) is detachably mounted in the ventilation box (2) through the limiting mechanism, the limiting mechanism comprising a plurality of fixed units arranged in the ventilation box (2) and a driving unit driving the plurality of fixed units to operate synchronously, the fixed units comprising a support plate (5), a movable plate (6) and a round rod (7), the support plate (5) being fixedly mounted on the inner wall of the ventilation box (2), and a rectangular hole being symmetrically provided on the support plate (5), the movable plate (6) being slidably arranged in the rectangular hole, and a round rod (7) being fixedly provided on the top of the movable plate (6), and limiting protrusions (8) being symmetrically provided on two of the round rods (7), the bottom surface of the net frame (3) being symmetrically provided with a slide groove (9) slidably matched with the round rod (7), and a limiting groove (10) being plug-matched with the limiting protrusion (8) being provided at the end of the slide groove (9), and the driving unit being used to provide power for the relative movement of two of the movable plates (6) in the plurality of fixed units.

2. The elevator ceiling ventilation structure according to claim 1, characterized in that: The driving unit comprises the same number of bidirectional screw rods (11) as the fixed unit, the bidirectional screw rods (11) being rotatably arranged on the bottom surface of the support plate (5), two adjacent bidirectional screw rods (11) being transmission-connected via a gear set (13), and threaded sleeves (12) being symmetrically mounted on two threaded portions of the bidirectional screw rods (11), and the movable plate (6) being fixedly connected to the threaded sleeves (12).

3. The elevator ceiling ventilation structure according to claim 2, characterized in that: The drive unit further comprises a protection module, the protection module comprising a rotating shaft (14), a first spring (15) and a fixed block (18); the rotating shaft (14) is movably mounted on the side wall of the ventilation box (2) via the first spring (15); a hand wheel (16) is fixedly mounted on one end of the rotating shaft (14) located outside the ventilation box (2); and a clamping block (17) is fixedly mounted on the other end; the fixed block (18) is fixedly mounted on the end of one of the bidirectional screw rods (11); and a clamping slot (19) for plugging and cooperating with the clamping block (17) is provided on the fixed block (18).

4. The elevator ceiling ventilation structure according to claim 1, characterized in that: A plurality of second springs (20) are also embedded on the top surface of the support plate (5).

5. The elevator ceiling ventilation structure according to claim 1, characterized in that: One end of the limiting protrusion (8) is movably inserted into the end of the round rod (7), and the other end is provided with a wedge-shaped groove. A third spring (21) is also provided between the limiting protrusion (8) and the inner wall of the round rod (7).

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