Safety protection door of construction elevator

Abstract

The utility model provides a safety protection door of a construction elevator, which relates to the field of construction elevators and comprises a platform, a door frame is arranged at the top of the platform, revolving doors are hinged to two sides in the door frame, and a U-shaped limit frame is arranged at the top of one side, far away from a hinge point with the door frame, in each revolving door. A movable rod is mounted on the inner side of the U-shaped limiting frame; by means of the limiting plate, in the closing process of the revolving door, the movable rod can enter the movable groove from the opening of the movable groove along with the revolving door, then the movable rod pushes the limiting plate to enable the limiting plate to rotate around the rotating shaft until the movable rod crosses the limiting plate, the limiting plate is reset under the action of the torsion spring, and under the action of the limiting groove, the movable rod can rotate around the rotating shaft. According to the structure, after the rotating door is closed, the rotating door can be automatically locked, and then potential safety hazards caused by the fact that the safety protection door is not locked due to negligence are avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction elevators, in particular to a safety protection door for a construction elevator. Background Art

[0002] Construction elevators, commonly known as construction hoists, are elevators used during the construction process. When in use, a platform for passage needs to be set up on the ground floor. A safety protection door needs to be installed on the passage platform to prevent workers from falling from the passage between the platform and the construction elevator.

[0003] At present, the safety protection doors of construction elevators are mostly locked by latches after being closed. The latches are located on the outside of the doors, so the doors can only be opened from inside the construction elevator, thereby effectively preventing workers from opening the doors from the inside. However, in actual use, the existing safety protection doors are often not locked due to the negligence of the elevator operators, thus causing certain safety hazards.

[0004] In summary, the utility model therefore provides a construction elevator safety protection door to solve the above-mentioned problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a construction elevator safety protection door.

[0006] A construction elevator safety protection door comprises a platform, a door frame is arranged on the top of the platform, revolving doors are hinged on both sides of the door frame, a U-shaped limit frame is arranged on the top of the revolving door away from the hinge point between the revolving door and the door frame, a movable rod is installed on the inner side of the U-shaped limit frame, and the top end of the movable rod passes through the top of the revolving door, two movable grooves are symmetrically arranged on the top side of the door frame, the two movable grooves correspond to the positions of the two movable rods respectively, and mounting seats are arranged on the inner wall of the two movable grooves away from each other, and a limiting groove is arranged on the inner wall of the movable groove away from the mounting seat, a rotating shaft is rotatably installed on the top of the mounting seat, a limiting plate is arranged on the surface of the rotating shaft, and the other end of the limiting plate penetrates into the limiting groove, a rotating groove corresponding to the position of the rotating shaft is arranged on the top of the movable groove, the top of the rotating shaft penetrates into the rotating groove, and the penetrated end is rotatably connected with the top of the rotating groove, and a torsion spring is sleeved on the surface of the rotating shaft located inside the rotating groove.

[0007] Furthermore, a limiting ring is provided on the surface of the movable rod located on the inner side of the U-shaped limiting frame, a spring is installed on the surface of the movable rod between the limiting ring and the top inner wall of the revolving door, and the two ends of the spring are respectively against the U-shaped limiting frame and the limiting ring.

[0008] Furthermore, the bottom end of the movable rod passes through the U-shaped limit frame, and the passed end is connected to a pull rod, a connecting shaft is installed on one side of the rotating plate just below the movable rod, one end of the connecting shaft passes through the revolving door, and the passed end is connected to a rocker rod, and the end of the rocker rod away from the connecting shaft is connected to the bottom end of the pull rod.

[0009] Furthermore, a door handle is installed on the surface of the revolving door, and the door handle is transmission-connected to the connecting shaft.

[0010] Furthermore, a baffle is provided at the center of the top side inside the door frame, and the movable groove is provided through a side away from the baffle.

[0011] Furthermore, the surfaces of the revolving doors are all provided with through windows, and the inner sides of the windows are all provided with wire meshes.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model provides a limit plate, during the closing process of the revolving door, the movable rod will enter the movable groove from the movable groove opening along with the revolving door, and then the movable rod will push the limit plate to rotate around the rotating shaft until the movable rod passes over the limit plate, and the limit plate will return to its original position under the action of the torsion spring, and the limit plate cannot rotate outward under the action of the limit groove, so the movable rod can be locked in the movable groove. Through the above structure, the revolving door can be locked automatically after it is closed, thereby avoiding the safety hazard caused by the safety protection door not being locked due to negligence. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a plan view of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the revolving door of the utility model;

[0016] Figure 3 It is a partial three-dimensional schematic diagram of the top side of the interior of the door frame of the utility model;

[0017] Figure 4 This utility model Figure 1 A local enlarged schematic diagram of the middle A;

[0018] Figure 5 This utility model Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0019] Figure 6 This utility model Figure 3 A partial enlarged schematic diagram of point C in the middle.

[0020] In the figure:

[0021] 1. Platform; 2. Door frame; 3. Revolving door; 4. U-shaped limit frame; 5. Movable rod; 6. Movable slot; 7. Mounting seat; 8. Limit slot; 9. Rotating shaft; 10. Limit plate; 11. Rotating slot; 12. Torsion spring; 13. Limit ring; 14. Spring; 15. Pull rod; 16. Connecting shaft; 17. Rocker arm; 18. Door handle; 19. Baffle; 20. Window; 21. Wire mesh. DETAILED DESCRIPTION

[0022] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0023] like Figure 1-6 As shown, the utility model provides a construction elevator safety protection door, including a platform 1, a door frame 2 is arranged on the top of the platform 1, and revolving doors 3 are hinged on both sides of the door frame 2. A U-shaped limit frame 4 is arranged on the top of the revolving door 3 away from the hinge point between the revolving door 3 and the door frame 2, and a movable rod 5 is installed on the inner side of the U-shaped limit frame 4, and the top of the movable rod 5 passes through the top of the revolving door 3. Two movable grooves 6 are symmetrically arranged on the top side of the door frame 2, and the two movable grooves 6 correspond to the positions of the two movable rods 5 respectively, and a mounting seat 7 is arranged on the inner wall of the two movable grooves 6 away from the mounting seat 7, and the movable groove 6 is away from the mounting seat 7. A limiting groove 8 is arranged on the inner wall of one side of the seat 7, a rotating shaft 9 is rotatably installed on the top of the mounting seat 7, a limiting plate 10 is arranged on the surface of the rotating shaft 9, and the other end of the limiting plate 10 penetrates into the limiting groove 8, a rotating groove 11 corresponding to the position of the rotating shaft 9 is opened on the top of the movable groove 6, the top end of the rotating shaft 9 penetrates into the rotating groove 11, and the penetrated end is rotatably connected with the top of the rotating groove 11, a torsion spring 12 is sleeved on the surface of the rotating shaft 9 located inside the rotating groove 11, and the two ends of the torsion spring 12 are respectively clamped with the inner wall of the rotating groove 11 and the limiting plate 10, so that one end of the limiting plate 10 is always in contact with the inner wall of the limiting groove 8 through the torsion spring 12.

[0024] Among them, a limiting ring 13 is provided on the surface of the movable rod 5 located on the inner side of the U-shaped limiting frame 4, and a spring 14 is installed on the surface of the movable rod 5 between the limiting ring 13 and the inner wall of the top side of the revolving door 3, and the two ends of the spring 14 are respectively against the U-shaped limiting frame 4 and the limiting ring 13, and the movable rod 5 is reset by the spring 14. At the same time, after the revolving door 3 is closed, the movable rod 5 is kept in a state of passing through the top of the revolving door 3, so that it is convenient for the limiting plate 10 to limit it.

[0025] Among them, the bottom end of the movable rod 5 passes through the U-shaped limit frame 4, and the end passed through is connected to the pull rod 15, and a connecting shaft 16 is installed on one side of the rotating plate just below the movable rod 5, one end of the connecting shaft 16 passes through the revolving door 3, and the inserted end is connected to a swing rod 17, and the end of the swing rod 17 away from the connecting shaft 16 is connected to the bottom end of the pull rod 15. During the rotation of the swing rod 17 around the connecting shaft 16, the height of the end away from the connecting shaft 16 will change, and the pull rod 15 can be driven to move downward through the swing rod 17, thereby pulling the movable rod 5 to move downward.

[0026] A door handle 18 is installed on the surface of the revolving door 3 , and the door handle 18 is transmission-connected to the connecting shaft 16 , so that the connecting shaft 16 can be driven to rotate by the door handle 18 .

[0027] Among them, a baffle 19 is arranged at the center of the top side inside the door frame 2, and the baffle 19 is used to limit the revolving door 3 so that it can only be opened inward but not outward, thereby preventing the revolving door 3 from affecting the movement of the construction elevator after opening outward, and the movable groove 6 is penetrated on the side away from the baffle 19, so that the movable pin on the top of the revolving door 3 can enter the movable groove 6.

[0028] The surface of the revolving door 3 is provided with a through window 20 , through which workers can observe the position of the construction elevator from the inside, and the inside of the window 20 is provided with a wire mesh 21 for protecting the window 20 .

[0029] Specific working principle:

[0030] The utility model provides a limit plate 10. During the closing process of the revolving door 3, the movable rod 5 will enter the movable groove 6 from the opening of the movable groove 6 along with the revolving door 3. Then the movable rod 5 pushes the limit plate 10 to make it rotate around the rotating shaft 9 until the movable rod 5 passes over the limit plate 10. The limit plate 10 is reset under the action of the torsion spring 12. Due to the action of the limit groove 8, the limit plate 10 cannot rotate outward, so the movable rod 5 can be locked in the movable groove 6. Through the above structure, after the revolving door 3 is closed, the revolving door 3 can be locked automatically, thereby avoiding the safety hazard caused by the safety protection door not being locked due to negligence. When the revolving door 3 needs to be opened, it is only necessary to turn the door handle 18. The door handle 18 drives the connecting shaft 16 to rotate, and the connecting shaft 16 drives the swing rod 17 to rotate. During the rotation of the swing rod 17, the movable rod 5 will be pulled downward by the pull rod 15 until the top of the movable rod 5 is lower than the bottom height of the limit plate 10, and the revolving door 3 can be opened.

[0031] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A construction elevator safety protection door, characterized in that: The invention comprises a platform (1), a door frame (2) is arranged on the top of the platform (1), revolving doors (3) are hingedly connected on both sides of the door frame (2), a U-shaped limit frame (4) is arranged on the top of the revolving door (3) away from the hinge point between the revolving door (3) and the door frame (2), a movable rod (5) is installed on the inner side of the U-shaped limit frame (4), and the top end of the movable rod (5) passes through the top of the revolving door (3), two movable grooves (6) are symmetrically arranged on the top side of the door frame (2), the two movable grooves (6) respectively correspond to the positions of the two movable rods (5), and the inner wall of the two movable grooves (6) away from each other is provided with a movable rod (5). The mounting seat (7) is provided with a limiting groove (8) on the inner wall of the movable groove (6) away from the mounting seat (7); a rotating shaft (9) is rotatably mounted on the top of the mounting seat (7); a limiting plate (10) is arranged on the surface of the rotating shaft (9), and the other end of the limiting plate (10) penetrates into the limiting groove (8); a rotating groove (11) corresponding to the position of the rotating shaft (9) is opened on the top of the movable groove (6); the top end of the rotating shaft (9) penetrates into the rotating groove (11), and the penetrated end is rotatably connected with the top of the rotating groove (11); and a torsion spring (12) is sleeved on the surface of the rotating shaft (9) located inside the rotating groove (11).

2. The construction elevator safety protection door as claimed in claim 1, characterized in that: A limiting ring (13) is provided on the surface of the movable rod (5) located on the inner side of the U-shaped limiting frame (4), and a spring (14) is mounted on the surface of the movable rod (5) between the limiting ring (13) and the inner wall of the top side of the revolving door (3), and the two ends of the spring (14) respectively abut against the U-shaped limiting frame (4) and the limiting ring (13).

3. The construction elevator safety protection door as claimed in claim 1, characterized in that: The bottom end of the movable rod (5) passes through the U-shaped limit frame (4), and the end passing through is connected to a pull rod (15); a connecting shaft (16) is installed on one side of the rotating plate just below the movable rod (5); one end of the connecting shaft (16) passes through the rotating door (3), and the end passing through is connected to a swing rod (17); and the end of the swing rod (17) away from the connecting shaft (16) is connected to the bottom end of the pull rod (15).

4. The construction elevator safety protection door as claimed in claim 3, characterized in that: A door handle (18) is installed on the surface of the revolving door (3), and the door handle (18) is transmission-connected to the connecting shaft (16).

5. The construction elevator safety protection door according to claim 1, characterized in that: A baffle (19) is provided at the center of the top side inside the door frame (2), and the movable groove (6) is provided through a side away from the baffle (19).

6. The construction elevator safety protection door according to claim 1, characterized in that: The surface of the revolving door (3) is provided with a through window (20), and the inner side of the window (20) is provided with a wire mesh (21).

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