Safety door of construction elevator

Abstract

The utility model discloses a construction elevator safety door, and particularly relates to the technical field of lifting equipment, the construction elevator safety door comprises a door frame, two door plates and a locking device, the door frame comprises a cross rod and inclined vertical rods fixedly arranged on the two sides of the cross rod, the door plates are rotatably connected with the inclined vertical rods, and the two inclined vertical rods are obliquely arranged towards the cross rod; the door plate can be automatically closed under the action of gravity after being opened; the locking device comprises a first inserting groove, a second inserting groove, a latch shaft and an L-shaped supporting plate, the first inserting groove and the second inserting groove are fixed to the inner sides of the two door plates correspondingly, the L-shaped supporting plate is rotationally connected with the first inserting groove, the latch shaft penetrates through the first inserting groove to abut against a transverse plate of the L-shaped supporting plate, and when the two door plates are closed, the second inserting groove can push the L-shaped supporting plate to rotate, and the latch shaft can push the L-shaped supporting plate to rotate. The latch shaft is inserted into the second slot. The safety door locking device is simple in structure, can automatically lock the safety door, prevents personnel and materials from accidentally falling in the operation process of the elevator, and guarantees personnel safety and construction order of a construction site.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a safety door for a construction elevator. Background Technology

[0002] In the use of construction hoists, safety doors are required to be installed between the building and the hoist on each floor for safety reasons. To adapt to specific construction site layouts and safety requirements, safety doors are usually designed to open from one side.

[0003] Traditional single-sided opening safety doors mostly have horizontally set latches, requiring personnel on the construction elevator to actively close the safety door and insert the latch. However, in actual use, it is common for people to forget to close the door or not to insert the latch (the door is ajar), which poses a safety hazard. Utility Model Content

[0004] The purpose of this utility model is to provide a safety door for a construction elevator to solve the problems existing in the prior art. It has a simple structure and can automatically lock the safety door to prevent personnel and materials from falling accidentally during the operation of the elevator, thus ensuring the safety of personnel and the order of construction on the construction site.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a safety door for a construction hoist, including a door frame, two door panels, and a locking device. The door frame includes a horizontal bar and two diagonal vertical bars. The two ends of the horizontal bar are fixedly connected to the tops of the two diagonal vertical bars respectively. The door panels are rotatably connected to the diagonal vertical bars. The two diagonal vertical bars are symmetrically arranged on both sides of the horizontal bar, and both diagonal vertical bars are inclined towards the horizontal bar, so that the door panels can automatically close under the action of gravity after being opened. The locking device includes a first slot, a second slot, a latch shaft, and an L-shaped support plate. The first slot is fixed to the inside of one of the door panels. The vertical plate of the L-shaped support plate is rotatably connected to the first slot. The horizontal plate of the L-shaped support plate is located below the first slot. The latch shaft passes through the first slot and abuts against the horizontal plate of the L-shaped support plate. The second slot is fixed to the inside of the other door panel. When the two door panels are closed, the second slot can contact the L-shaped support plate and push the L-shaped support plate to rotate, so that the latch shaft is inserted into the second slot. The latch shaft has a limiting part to prevent it from disengaging from the first slot.

[0007] Preferably, the door panel is a right trapezoid, the inclined surface of the door panel is rotatably connected to the inclined upright, the inclined surface of the door panel is parallel to the inclined upright, and the distance from the top surface of the door panel to the mounting surface is greater than the distance from the top surface of the crossbar to the mounting surface.

[0008] Preferably, the door frame is inclined toward the mounting surface along the direction in which the door panel closes.

[0009] Preferably, a cylindrical tube is provided on the inclined surface of the door panel, and the inclined upright is fixedly connected to the pin by a fixing block. The axis of the cylindrical tube is parallel to the inclined surface of the door panel, and the pin is parallel to the inclined upright. The pin can be inserted into the cylindrical tube from the bottom of the cylindrical tube, so that the door panel and the inclined upright are rotatably connected.

[0010] Preferably, the latch shaft includes a vertical shaft and a handle perpendicularly connected to the vertical shaft. One end of the vertical shaft can pass through the first slot and abut against the horizontal plate of the L-shaped support plate. The handle can fit against the top surface of the first slot to prevent the vertical shaft from disengaging from the first slot.

[0011] Preferably, it further includes a third slot, which is fixed to the inside of the door panel on which the first slot is installed. The third slot is positioned above the first slot. One end of the vertical shaft can pass through the third slot and the first slot and abut against the horizontal plate of the L-shaped support plate. The handle is located between the first slot and the third slot.

[0012] Preferably, it further includes a fourth slot, which is fixed to the inside of the door panel on which the first slot is installed. The fourth slot is located below the first slot, and when the two door panels are closed, the latch shaft can pass through the second slot and be inserted into the fourth slot.

[0013] Preferably, the door panel has an observation window.

[0014] Preferably, the observation window is provided with a protective net.

[0015] Preferably, the bottom surface of the door panel is 5-7 cm away from the installation ground.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a safety door for a construction hoist. Two inclined uprights of the door frame are tilted towards the horizontal bar. The angle of inclination ensures that the two door panels installed on the inclined uprights automatically close under gravity. When the safety door opens, the latch shaft is pulled upwards, disengaging it from the second slot and pushing the two door panels apart. The L-shaped support plate, rotatably connected to the first slot, automatically rotates to its lowest point under gravity, below the first slot. The bottom of the latch shaft abuts against the horizontal plate of the L-shaped support plate, which has rotated to below the first slot, restricting the downward movement of the latch shaft. When the safety door automatically closes, the second slot can only push the L-shaped support plate away from the first slot, causing the L-shaped support plate to move away from below the first slot. This allows the latch shaft to automatically insert into the second slot, achieving automatic locking of the safety door and preventing safety hazards caused by human error leading to forgetting to close the safety door. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the safety door of a construction elevator;

[0020] Figure 2 for Figure 1 Enlarged view of part A when the locking device is not locked;

[0021] Figure 3 for Figure 1 An enlarged view of part A when the locking device is engaged.

[0022] In the diagram: 1-Horizontal bar; 2-Diagonal upright bar; 3-Door panel; 4-Observation window; 5-Safety net; 6-Cylindrical tube; 7-Pin; 8-First slot; 9-Second slot; 10-Latch shaft; 11-L-shaped support plate; 12-Third slot; 13-Fourth slot; 14-Vertical shaft; 15-Handle. Detailed Implementation

[0023] 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.

[0024] The purpose of this utility model is to provide a safety door for a construction elevator to solve the problems existing in the prior art. It has a simple structure and can automatically lock the safety door to prevent personnel and materials from falling accidentally during the operation of the elevator, thus ensuring the safety of personnel and the order of construction on the construction site.

[0025] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] This utility model provides a safety door for a construction elevator, such as Figure 1-3As shown, the device includes a door frame, two door panels 3, and a locking device. The door frame includes a horizontal bar 1 and two diagonal bars 2. The two ends of the horizontal bar 1 are fixedly connected to the tops of the two diagonal bars 2, respectively. The door panels 3 are rotatably connected to the diagonal bars 2. The two diagonal bars 2 are symmetrically arranged on both sides of the horizontal bar 1, and both diagonal bars 2 are inclined towards the horizontal bar 1, so that the door panels 3 can automatically close under the action of gravity after being opened. The locking device includes a first slot 8, a second slot 9, a latch shaft 10, and an L-shaped support plate 11. The first slot 8 is fixed to a... Inside the door panel 3, the vertical plate of the L-shaped support plate 11 is rotatably connected to the first slot 8, and the horizontal plate of the L-shaped support plate 11 is located below the first slot 8. The latch shaft 10 passes through the first slot 8 and abuts against the horizontal plate of the L-shaped support plate 11. The second slot 9 is fixed inside the other door panel 3. When the two door panels 3 are closed, the second slot 9 can contact the L-shaped support plate 11 and push the L-shaped support plate 11 to rotate, so that the latch shaft 10 is inserted into the second slot 9. The latch shaft 10 has a limiting part to prevent it from disengaging from the first slot 8. The two diagonal uprights 2 of the door frame are inclined towards the horizontal bar 1. The rotation axis of the door panel 3 is parallel to the diagonal uprights 2. When the safety door is closed, the center of gravity of the door panel 3 is at its lowest point. When the door panel 3 is opened, its center of gravity will gradually rise. When the external force of pushing the door is removed, the two door panels 3 will automatically close under the action of gravity. When the safety door is opened, the latch shaft 10 is pulled upward to disengage the latch shaft 10 from the second slot 9, pushing the two door panels 3 apart. The L-shaped support plate 1, which is rotatably connected to the first slot 8, is then released. 1. Under the influence of gravity, it automatically rotates to the lowest point, below the first slot 8. The bottom of the latch shaft 10 abuts against the horizontal plate of the L-shaped support plate 11, which has rotated to below the first slot 8, restricting the downward movement of the latch shaft 10. When the safety door automatically closes, the second slot 9 can only push away the L-shaped support plate 11 to rotate, causing the L-shaped support plate 11 to move away from below the first slot 8, thereby allowing the latch shaft 10 to automatically insert into the second slot 9, realizing automatic locking of the safety door and avoiding safety hazards caused by human negligence in forgetting to close the safety door. Preferably, the construction elevator safety door also includes a chain. One end of the chain is installed on the inclined upright 2, and the other end is installed on the door panel 3. The length of the chain is set to be just taut when the door panel 3 is opened to about 120°, so that the door panel 3 cannot continue to open beyond this angle, avoiding the door panel opening angle being too large, which would cause it to fail to close automatically.

[0027] In a further preferred embodiment of this utility model, the door panel 3 is a right-angled trapezoid, with its inclined surface rotatably connected to the inclined upright 2, and the inclined surface of the door panel 3 being parallel to the inclined upright 2. The distance from the top surface of the door panel 3 to the mounting surface is greater than the distance from the top surface of the crossbar 1 to the mounting surface. The length of the top surface of the right-angled trapezoidal door panel 3 is less than the length of the bottom surface, and the inclined surface of the door panel 3 is parallel to the inclined upright 2, which ensures that when the two door panels 3 installed on the inclined upright 2 are closed, there is a uniform gap between the two door panels 3.

[0028] In a further preferred embodiment of this utility model, the door frame is inclined toward the mounting surface along the closing direction of the door panel 3, that is, there is a certain angle between the plane where the door frame is located and the vertical mounting surface, which further ensures that the door panel 3 can automatically return to the closed state when the door is open.

[0029] In a further preferred embodiment of this utility model, a cylindrical tube 6 is provided on the inclined surface of the door panel 3, and the inclined upright 2 is fixedly connected to the pin 7 by a fixing block. The axis of the cylindrical tube 6 is parallel to the inclined surface of the door panel 3, and the pin 7 is parallel to the inclined upright 2. The pin 7 can be inserted into the cylindrical tube 6 from the bottom, so that the door panel 3 and the inclined upright 2 are rotatably connected. During installation, the inclined upright 2 is first installed at the corresponding positions on the left and right sides of the door opening. The fixing method can be to use fastener-type steel pipe connectors. Then, the two cylindrical tubes 6 of the two right-angled trapezoidal door panels 3 are respectively aligned with the pins 7 of the uprights and inserted. The tilt angle of the inclined rod is slightly adjusted to ensure that the axes of the multiple slots on the door panel 3 are collinear after the two door panels 3 are closed, so that the door latch shaft 10 can be smoothly inserted. Finally, the crossbar 1 is installed to ensure that the door panel 3 can only be opened in one direction.

[0030] In a further preferred embodiment of this utility model, the latch shaft 10 includes a vertical shaft 14 and a handle 15 vertically connected to the vertical shaft 14. One end of the vertical shaft 14 can pass through the first slot 8 and abut against the horizontal plate of the L-shaped support plate 11. The handle 15 can fit against the top surface of the first slot 8 to prevent the vertical shaft 14 from disengaging from the first slot 8.

[0031] In a further preferred embodiment of this utility model, the safety door of the construction elevator also includes a third slot 12. The third slot 12 is fixed to the inner side of the door panel 3 on which the first slot 8 is installed, and the third slot 12 is positioned above the first slot 8. One end of the vertical shaft 14 can pass through the third slot 12 and the first slot 8 and abut against the horizontal plate of the L-shaped support plate 11. The handle 15 is located between the first slot 8 and the third slot 12. When unlocking, pulling the handle 15 upwards allows it to abut against the bottom surface of the third slot 12, and the third slot 12 limits the handle 15 to prevent the latch shaft 10 from disengaging from above. When automatically locking, the latch shaft 10 falls, and the handle 15 abuts against the top surface of the first slot 8, and the first slot 8 limits the handle 15 to prevent the latch shaft 10 from disengaging from below.

[0032] In a further preferred embodiment of this utility model, the construction elevator safety door also includes a fourth slot 13. The fourth slot 13 is fixed to the inner side of the door panel 3 on which the first slot 8 is installed, and the fourth slot 13 is located below the first slot 8. When the two door panels 3 are closed, the latch shaft 10 can pass through the second slot 9 and be inserted into the fourth slot 13. When the safety door is closed, the latch shaft 10 is sequentially inserted into the third slot 12, the first slot 8, the second slot 9, and the fourth slot 13 from top to bottom, which can enhance the stability of the safety door in the locked state.

[0033] In a further preferred embodiment of this utility model, an observation window 4 is provided on the door panel 3, which allows for convenient observation of the working environment.

[0034] In a further preferred embodiment of this utility model, a protective net 5 is provided on the observation window 4. The protective net 5 has high strength and impact resistance, and can provide necessary protection.

[0035] In a further preferred embodiment of this utility model, the bottom surface of the door panel 3 is 5-7cm away from the installation ground. When the right-angled trapezoidal door panel 3 is opened, the top corner of the door panel 3 near the installation ground is prevented from getting stuck on the installation ground, thus preventing the door panel 3 from opening.

[0036] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A safety door for a construction hoist, characterized in that: The device includes a door frame, two door panels, and a locking device. The door frame includes a horizontal bar and two diagonal bars. The two ends of the horizontal bar are fixedly connected to the tops of the two diagonal bars. The door panels are rotatably connected to the diagonal bars. The two diagonal bars are symmetrically arranged on both sides of the horizontal bar, and both diagonal bars are inclined towards the horizontal bar, so that the door panels can automatically close under gravity after being opened. The locking device includes a first slot, a second slot, a latch shaft, and an L-shaped support plate. The first slot is fixed to the inside of one of the door panels. The vertical plate of the L-shaped support plate is rotatably connected to the first slot. The horizontal plate of the L-shaped support plate is located below the first slot. The latch shaft passes through the first slot and abuts against the horizontal plate of the L-shaped support plate. The second slot is fixed to the inside of the other door panel. When the two door panels are closed, the second slot can contact the L-shaped support plate and push the L-shaped support plate to rotate, so that the latch shaft is inserted into the second slot. The latch shaft has a limiting part to prevent it from disengaging from the first slot.

2. The safety door for the construction elevator according to claim 1, characterized in that: The door panel is in the shape of a right trapezoid, the inclined surface of the door panel is rotatably connected to the inclined upright, and the inclined surface of the door panel is parallel to the inclined upright. The distance from the top surface of the door panel to the mounting surface is greater than the distance from the top surface of the crossbar to the mounting surface.

3. The safety door for the construction elevator according to claim 2, characterized in that: The door frame is inclined toward the mounting surface along the direction in which the door panel closes.

4. The safety door for the construction elevator according to claim 3, characterized in that: A cylindrical tube is provided on the inclined surface of the door panel. The inclined upright is fixedly connected to the pin by a fixing block. The axis of the cylindrical tube is parallel to the inclined surface of the door panel. The pin is parallel to the inclined upright. The pin can be inserted into the cylindrical tube from the bottom of the cylindrical tube, so that the door panel and the inclined upright are rotatably connected.

5. The safety door for the construction elevator according to claim 3, characterized in that: The latch shaft includes a vertical shaft and a handle perpendicularly connected to the vertical shaft. One end of the vertical shaft can pass through the first slot and abut against the horizontal plate of the L-shaped support plate. The handle can fit against the top surface of the first slot to prevent the vertical shaft from disengaging from the first slot.

6. The safety door for the construction elevator according to claim 5, characterized in that: It also includes a third slot, which is fixed to the inside of the door panel on which the first slot is installed. The third slot is positioned above the first slot. One end of the vertical shaft can pass through the third slot and the first slot and abut against the horizontal plate of the L-shaped support plate. The handle is located between the first slot and the third slot.

7. The safety door for the construction elevator according to claim 6, characterized in that: It also includes a fourth slot, which is fixed to the inside of the door panel on which the first slot is installed. The fourth slot is located below the first slot. When the two door panels are closed, the latch shaft can pass through the second slot and be inserted into the fourth slot.

8. The safety door for the construction elevator according to claim 1, characterized in that: An observation window is provided on the door panel.

9. The safety door for the construction elevator according to claim 8, characterized in that: The observation window is equipped with a protective net.

10. The safety door for the construction elevator according to claim 2, characterized in that: The bottom surface of the door panel is 5-7cm away from the installation ground.

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