Goods elevator protective door for construction site

Abstract

The utility model discloses a goods elevator protective door for a construction site. The goods elevator protective door is characterized by comprising a door frame, a weight sensor, a door net, a rack, a servo motor and a gear, a weight sensor is fixedly connected to the bottom of the door frame and located in the goods elevator of the construction site. A door net is slidably connected to the door frame. A rack is fixedly connected to the door net; a servo motor is arranged on the door frame, and the weight sensor is electrically connected with the servo motor, so that the servo motor can be controlled by the weight sensor to operate; a gear is fixedly connected to the output end of the servo motor and engaged with the rack. The door net has the advantages that the door net is automatically closed through the weight sensor, so that the door net can be automatically started to close the construction site goods elevator, potential safety hazards caused by the fact that workers forget to open the construction site goods elevator are prevented, and the safety of the construction site goods elevator is improved.

Description

Technical Field

[0001] The utility model relates to a protective door, in particular to a protective door for a freight elevator at a construction site. Background Art

[0002] A construction site freight elevator is a device used in construction activities to provide transportation functions for construction sites under construction. The construction site freight elevator needs to be dismantled after the construction activities are completed, so the construction site freight elevator is relatively simple. Therefore, in general, protective doors will be installed on the construction site freight elevator to improve the safety of the construction site freight elevator.

[0003] However, the existing protective doors need to be opened and closed manually when in use, and workers often forget to close the protective doors when carrying more and heavier objects, causing the door net to fail to function and resulting in low safety of the freight elevator at the construction site. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a construction site freight elevator protective door which can automatically close the door, so as to improve the use safety of the construction site freight elevator.

[0005] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a protective door for a freight elevator at a construction site, comprising a door frame, a weight sensor, a door net, a rack, a servo motor and a gear; a weight sensor is fixedly connected to the bottom of the door frame, and the weight sensor is located in the freight elevator at the construction site; a door net is slidably connected to the door frame; a rack is fixedly connected to the door net; a servo motor is arranged on the door frame, and the weight sensor is electrically connected to the servo motor, so that the servo motor can be controlled to run by the weight sensor; a gear is fixedly connected to the output end of the servo motor, and the gear is meshed with the rack.

[0006] A further preferred solution of the utility model is: it also includes a track and a roller; the side of the door frame is fixedly connected with the track, and a groove is provided in the guide rail; the bottom of the door net is rotatably connected with the roller, and the roller is located in the groove of the track.

[0007] A further preferred embodiment of the utility model is as follows: it also includes a sliding plate, a bolt and a handle; a sliding groove is provided on the door frame; a sliding plate is fixedly connected to the servo motor, and the sliding plate slides in the sliding groove so that the servo motor is slidably connected to the door frame; a handle is fixedly connected to the sliding plate; and a bolt is slidably inserted between the sliding plate and the door frame.

[0008] A further preferred solution of the utility model is: it also includes a stopper and a protrusion; the bottom of the sliding plate is fixedly connected with the stopper; the door frame is fixedly connected with the protrusion, and when the sliding plate is in the position where the gear rack is meshed, the stopper contacts the protrusion.

[0009] A further preferred solution of the utility model is: it also includes a support plate; the support plate is fixedly connected to the door frame, and when the sliding plate is in the position where the gear rack is meshed, the distance between the support plate and the bottom of the sliding plate at this position is greater than the thickness of the gear rack.

[0010] A further preferred solution of the utility model is: it also includes a hanging rope; the hanging rope is fixedly connected between the bolt bar and the door frame.

[0011] A further preferred solution of the utility model is: it also includes a baffle; the top of the door frame is fixedly connected with the baffle.

[0012] A further preferred solution of the utility model is: it also includes a warning light; the top of the door frame is fixedly connected with the warning light.

[0013] A further preferred solution of the utility model is: it also includes a buffer pad; the top of the support plate is fixedly connected with the buffer pad.

[0014] Compared with the prior art, the advantages of the utility model are as follows: the utility model automatically closes the door net by setting a weight sensor, so that the utility model can be automatically activated and close the freight elevator on the construction site, preventing workers from forgetting to open the freight elevator on the construction site and causing safety hazards, thereby improving the safety of the freight elevator on the construction site. The utility model can slide freely by setting a sliding plate and a servo motor to eliminate the influence of the servo motor on the door net, so that the freight elevator on the construction site can be opened and closed freely, preventing workers from being unable to get out of the freight elevator on the construction site due to problems with the protective door, and improving the comprehensiveness of the use of the protective door. The utility model sets a stopper, a convex block and a support plate, so that the movement of the sliding plate and the servo motor does not require the observation of the gear and rack to control the movement of the sliding plate, which facilitates the use of the sliding function of the servo motor and improves the convenience of use of the protective door. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments, but those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be used as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematically representing the composition or structure of the described object and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural diagram of the weight sensor and door net of the utility model;

[0018] Figure 3 It is a sectional view of the three-dimensional structure of the servo motor and the slide of the utility model;

[0019] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0020] In the figure: 1. door frame; 2. track; 3. weight sensor; 4. groove; 5. door net; 6. roller; 7. rack; 8. servo motor; 9. gear; 10. slide; 1001. sliding plate; 11. stop block; 12. bump; 13. support plate; 14. handle; 15. bolt strip; 16. hanging rope; 17. baffle; 18. warning light; 19. buffer pad. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be appreciated by those skilled in the art that these descriptions are merely illustrative and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0022] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0023] This embodiment mainly describes the structure of the protective door, which is as follows:

[0024] A construction site freight elevator protective door, such as Figure 1-Figure 2 As shown, it includes a door frame 1, a weight sensor 3, a door net 5, a rack 7, a servo motor 8 and a gear 9; a weight sensor 3 is installed at the bottom of the door frame 1, the weight sensor 3 is located in the freight elevator of the construction site, and the weight sensor 3 is used to sense whether the freight elevator of the construction site is load-bearing; a door net 5 is slidably connected to the door frame 1; a rack 7 is welded on the top of the door net 5; a servo motor 8 is arranged on the door frame 1, and the weight sensor 3 is electrically connected to the servo motor 8, so that the servo motor 8 can be controlled by the weight sensor 3; a gear 9 is installed on the output end of the servo motor 8, and the gear 9 is meshed with the rack 7.

[0025] When using the construction site freight elevator, workers carry the goods into the construction site freight elevator. At this time, the weight sensor 3 senses the weight. When the workers operate the construction site freight elevator to move up / down, the weight sensor 3 will drive the servo motor 8 to start, rotate the gear 9, and move the door net 5 to the left through the rack 7 meshing with it, close the door net 5, and realize the automatic closing of the protective door without the need for workers to operate, thereby avoiding safety hazards of the construction site freight elevator caused by workers forgetting to close the door net 5, and improving the safety of the use of the protective door; and when it is necessary to go out from the construction site freight elevator, use the switch of the servo motor 8 to control the servo motor 8 to reverse, move the door net 5 to the right, and open the construction site freight elevator.

[0026] like Figure 1-Figure 2As shown, it also includes a track 2 and a roller 6; the right side of the door frame 1 is fixedly connected to the track 2, and a groove 4 is provided in the guide rail; the bottom of the door net 5 is rotatably connected to the roller 6, and the roller 6 is located in the groove 4 of the track 2. By providing the roller 6, the door net 5 is not easily separated from the door frame 1, thereby improving the structural stability of the protective door.

[0027] like Figure 3-Figure 4 As shown, it also includes a sliding plate 1001, a bolt 15 and a handle 14; a slide groove 10 is opened on the right side of the door frame 1; the bottom bolt of the servo motor 8 is connected with the sliding plate 1001, and the sliding plate 1001 slides in the slide groove 10, so that the servo motor 8 is slidably connected with the door frame 1; a handle 14 is welded on the sliding plate 1001, and the handle 14 is used to control the movement of the sliding plate 1001; a bolt 15 is slidably inserted between the sliding plate 1001 and the door frame 1, and the bolt 15 is used to fix the position of the sliding plate 1001. When there is an unexpected power outage at the construction site, the servo motor 8 will not be able to work normally. At this time, due to the self-locking of the servo motor 8, the door net 5 will not be able to slide open. Therefore, it is only necessary to pull out the bolt bar 15 forward to unlock the fixation of the sliding plate 1001, and then move the sliding plate 1001 downward to disengage the gear 9 from the rack 7. This can remove the influence of the servo motor 8 on the door net 5 and freely open and close the freight elevator at the construction site. Therefore, the protective door is provided with a sliding servo motor 8 so that the protective door can cope with emergencies caused by unexpected power outages, prevent workers from being unable to get out of the freight elevator at the construction site due to problems with the protective door, and improve the comprehensiveness of the use of the protective door.

[0028] like Figure 4 As shown, it also includes a stopper 11 and a protrusion 12; the bottom of the sliding plate 1001 is welded with a stopper 11; the door frame 1 is welded with a protrusion 12 for positioning, and when the sliding plate 1001 is located at the position where the gear 9 and the rack 7 are meshed, the stopper 11 contacts the protrusion 12. When the servo motor 8 slides and the gear 9 and the rack 7 are disengaged, and it is necessary to move the servo motor 8 back, the sliding plate 1001 is moved upward, and when the stopper 11 contacts the protrusion 12, the gear 9 and the rack 7 are fully meshed. Therefore, when using the sliding plate 1001, the stopper 11 and the protrusion 12 can be used for rapid positioning, without observing the gear 9 and the rack 7 to control the movement of the sliding plate 1001, thereby facilitating the use of the sliding function of the servo motor 8 and improving the convenience of use of the protective door.

[0029] like Figure 3As shown, the door frame 1 further includes a support plate 13; the support plate 13 is welded on the door frame 1, and the support plate 13 is used to support the sliding plate 1001. When the sliding plate 1001 is located at a position where the gear 9 and the rack 7 are meshed, the distance between the support plate 13 and the bottom of the sliding plate 1001 at this position is greater than the thickness of the gear 9 and the rack 7. The support plate 13 can support the sliding plate 1001, improve the stability of the servo motor 8 after sliding downward, and when the sliding plate 1001 is supported by the support plate 13, the gear 9 and the rack 7 are completely separated, so the support plate 13 also has a positioning function, which facilitates the use of the protective door.

[0030] like Figure 1 As shown, a hanging rope 16 is also included; a hanging rope 16 is fixedly connected between the bolt bar 15 and the door frame 1. The hanging rope 16 allows the bolt bar 15 to be hung on the door frame 1 after being pulled out, so as to prevent the bolt bar 15 from being lost.

[0031] like Figure 1 As shown, the protective door also includes a baffle 17; the top bolt of the door frame 1 is connected with the baffle 17. The baffle 17 can prevent falling objects from high altitude from injuring workers, thereby improving the protectiveness of the protective door.

[0032] like Figure 1 As shown, a warning light 18 is also included; a warning light 18 is installed on the top of the door frame 1. When the door net 5 moves left and right and opens / closes the construction site freight elevator, the warning light 18 sounds an alarm to remind workers not to approach the door net 5 to prevent them from being pinched by the door net 5.

[0033] like Figure 1 As shown, a buffer pad 19 is also included; the top of the support plate 13 is fixedly connected with the buffer pad 19, and the buffer pad 19 is used to buffer the impact of the sliding plate 1001 moving downward, thereby improving the safety of the sliding plate 1001 and the servo motor 8.

[0034] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0035] The above is a detailed introduction to a construction site freight elevator protective door provided by the utility model. This article uses specific examples to illustrate the principle and implementation of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A construction site freight elevator protective door, characterized by: The invention comprises a door frame (1), a weight sensor (3), a door net (5), a rack (7), a servo motor (8) and a gear (9); the bottom of the door frame (1) is fixedly connected with the weight sensor (3), the weight sensor (3) is located in a freight elevator at a construction site, and the weight sensor (3) is used to sense whether the freight elevator at the construction site is load-bearing; the door frame (1) is slidably connected with the door net (5); the door net (5) is fixedly connected with the rack (7); the door frame (1) is provided with a servo motor (8), the weight sensor (3) is electrically connected to the servo motor (8), so that the servo motor (8) can be controlled to run by the weight sensor (3); the output end of the servo motor (8) is fixedly connected with a gear (9), and the gear (9) is meshed with the rack (7).

2. A construction site freight elevator protective door according to claim 1, characterized in that: It also includes a track (2) and a roller (6); the side of the door frame (1) is fixedly connected to the track (2), and a groove (4) is provided in the guide rail; the bottom of the door net (5) is rotatably connected to the roller (6), and the roller (6) is located in the groove (4) of the track (2).

3. A construction site freight elevator protective door according to claim 2, characterized in that: The invention also comprises a sliding plate (1001), a bolt (15) and a handle (14); a sliding groove (10) is provided on the door frame (1); the sliding plate (1001) is fixedly connected to the servo motor (8), the sliding plate (1001) slides in the sliding groove (10), so that the servo motor (8) and the door frame (1) are slidably connected; the sliding plate (1001) is fixedly connected to the handle (14), and the handle (14) is used to control the movement of the sliding plate (1001); a bolt (15) is slidably plugged between the sliding plate (1001) and the door frame (1), and the bolt (15) is used to fix the position of the sliding plate (1001).

4. A construction site freight elevator protective door according to claim 3, characterized in that: It also comprises a stopper (11) and a protrusion (12); the bottom of the sliding plate (1001) is fixedly connected with the stopper (11); the door frame (1) is fixedly connected with a protrusion (12) for positioning; when the sliding plate (1001) is located at a position where the gear (9) and the rack (7) are meshed, the stopper (11) contacts the protrusion (12).

5. A construction site freight elevator protective door according to claim 4, characterized in that: It also includes a support plate (13); the support plate (13) is fixedly connected to the door frame (1), and the support plate (13) is used to support the sliding plate (1001). When the sliding plate (1001) is located at a position where the gear (9) and the rack (7) are meshed, the distance between the support plate (13) and the bottom of the sliding plate (1001) at this position is greater than the thickness of the gear (9) and the rack (7).

6. A construction site freight elevator protective door according to claim 5, characterized in that: It also comprises a hanging rope (16); the hanging rope (16) is fixedly connected between the bolt bar (15) and the door frame (1).

7. A construction site freight elevator protective door according to claim 1, characterized in that: It also includes a baffle (17); the baffle (17) is fixedly connected to the top of the door frame (1).

8. A construction site freight elevator protective door according to claim 1, characterized in that: It also comprises a warning light (18); the top of the door frame (1) is fixedly connected with the warning light (18).

9. A construction site freight elevator protective door according to claim 1, characterized in that: It also includes a buffer pad (19); the top of the support plate (13) is fixedly connected with the buffer pad (19).

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