Automatic opening and closing device for landing door of construction hoist

Abstract

The utility model discloses an automatic opening and closing device for a landing door of a construction hoist, which is mounted between a discharge door and the landing door of the construction hoist and comprises a collision block, a cam, a long rod and a baffle, the collision block is positioned on the discharge door, the baffle is connected onto the hoist and positioned on one side of the discharge door, a first spring is arranged on the discharge door, one end of the first spring is abutted against the collision block, and the other end of the first spring is abutted against the long rod. The cam is provided with a sliding groove matched with the collision block, the long rod is arranged on the cam, and automatic opening and closing of the landing door of the building hoist can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of construction hoists, and particularly relates to an automatic opening and closing device for a landing door of a construction hoist. Background Art

[0002] A construction hoist is a manned and cargo-carrying construction machine widely used in various constructions, mainly used for the interior and exterior decoration of high-rise buildings, the construction of buildings such as bridges and chimneys. In the prior art, the automatic opening and closing function of the landing door of a construction hoist is usually realized by a combination of devices such as an electromagnet, a human body infrared sensor, and a door closer. When a person approaches the landing door, the human body infrared sensor senses the signal and sends it to the control system. After receiving the signal, the control system controls the electromagnet to be energized, so that the electromagnet contacts the middle position at the upper end of the landing door, thereby keeping the landing door in an open state. When a person leaves the landing door, the human body infrared sensor senses the signal again and sends it to the control system. After receiving the signal, the control system controls the electromagnet to be de-energized, and at this time, the door closer drives the landing door to close automatically. Therefore, most of the commonly used automatic opening and closing door methods in the prior art are electric control methods, and the cost is relatively high. Content of the Utility Model

[0003] To solve the above technical problems, the utility model provides an automatic opening and closing device for a landing door of a construction hoist, which is composed of a mechanical structure and can realize the automatic opening and closing of the landing door of the construction hoist.

[0004] The utility model adopts the following technical solutions:

[0005] An automatic opening and closing device for a landing door of a construction hoist is installed between the discharge door and the landing door of the construction hoist, and includes a bumper, a cam, a long rod, and a baffle. The bumper is located on the discharge door, the baffle is connected to the hoist and is located on one side of the discharge door. There is a first spring on the discharge door, one end of the first spring abuts against the bumper, the cam has a chute matching the bumper, and the long rod is arranged on the cam.

[0006] Preferably, the chute is a spiral groove provided on the surface of the cam.

[0007] Preferably, there is a second spring between the long rod and the landing door.

[0008] Preferably, the automatic opening and closing device has a first state. In the first state, the bumper is located in the installation groove of the discharge door, and the bumper presses on the first spring. The baffle is located on one side of the discharge door to limit the outward movement of the bumper.

[0009] Preferably, the automatic opening and closing device has a second state. In the second state, the discharge door moves relative to the baffle, the baffle releases the restriction on the bumper, and the bumper slides in the chute, causing the long rod to rotate and push the landing door open.

[0010] Compared with the prior art, the utility model has the following advantages: The utility model provides an automatic opening and closing device for a construction hoist landing door, which includes a bump, a cam, a long rod and a baffle. During operation, the discharge door moves relative to the baffle, the baffle releases the restriction on the bump, and the bump slides in the chute, causing the long rod to rotate and push the landing door open. It is composed of a mechanical structure and can realize the automatic opening and closing of the construction hoist landing door. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of the automatic opening and closing device.

[0012] Figure 2 It is a schematic structural diagram of the discharge door and the baffle part.

[0013] Figure 3 It is a schematic structural diagram of the landing door and the long rod part.

[0014] In the figure, discharge door 1, landing door 2, bump 3, cam 4, chute 4-1, long rod 5, baffle 6, first spring 7, second spring 8. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] In order to facilitate the understanding of the technical solution of the utility model, the following is a detailed description in combination with the drawings and specific embodiments.

[0016] Embodiment 1

[0017] As Figures 1-3 shown, an automatic opening and closing device for a construction hoist landing door is installed between the discharge door 1 and the landing door 2 of the construction hoist, and includes a bump 3, a cam 4, a long rod 5 and a baffle 6. An installation groove is provided on the discharge door 1, and the bump 3 is located in the installation groove of the discharge door 1. The baffle 6 is connected to the hoist and is located on one side of the discharge door 1. A first spring 7 is provided on the installation groove of the discharge door 1. One end of the first spring 7 abuts against the bump 3, and there is no fixed connection between the first spring 7 and the bump 3. The cam 4 has a chute 4-1 matching the bump 3, and the long rod 5 is arranged on the cam 4.

[0018] The chute 4-1 is a spiral groove provided on the surface of the cam 4.

[0019] There is a second spring 8 between the long rod 5 and the landing door 2.

[0020] The automatic opening and closing device has a first state. In the first state, the bump 3 is located in the installation groove of the discharge door 1, and the bump 3 presses on the first spring 7. The baffle 6 is located on one side of the discharge door 1 to restrict the outward movement of the bump 3.

[0021] The automatic switch device has a second state. In the second state, the discharge door 1 moves relative to the baffle 6, the baffle 6 releases the restriction on the collision block 3, and the collision block 3 slides in the chute 4-1, causing the long rod 5 to rotate and push the layer door 2 open.

[0022] The first state is the state where the layer door 2 is not opened. When the layer door 2 needs to be opened, the discharge door 1 moves upward relative to the baffle 6, the baffle 6 releases the restriction on the collision block 3, and the collision block 3 moves outward under the action of the first spring 7. The collision block 3 slides in the chute 4-1, causing the cam 4 to rotate, thereby driving the long rod 5 to rotate and abut against the layer door 2, and then pushing the layer door 2 open. When the discharge door 1 moves downward relative to the baffle 6, the discharge door 1 drives the collision block 3 to move downward. After the collision block 3 contacts the baffle 6, it retracts into the discharge door 1 under the action of the baffle 6 and compresses the first spring 7. When the collision block 3 passes through the chute 4-1, it drives the cam 4 to rotate. The rotation of the cam 4 drives the long rod 5 to retract, and the second spring 8 is stressed to pull the layer door 2 back to close.

[0023] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is subject to the scope defined by the claims. Several improvements and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. An automatic opening and closing device for a construction elevator door, characterized in that: The utility model is installed between a discharge door (1) and a floor door (2) of a construction elevator, and comprises a bumper (3), a cam (4), a long rod (5) and a baffle (6); the bumper (3) is located on the discharge door (1); the baffle (6) is connected to the elevator and is located on one side of the discharge door (1); the discharge door (1) is provided with a first spring (7); one end of the first spring (7) is against the bumper (3); the cam (4) is provided with a slide groove (4-1) matching the bumper (3); and the long rod (5) is arranged on the cam (4).

2. The automatic opening and closing device for the floor door of a construction elevator according to claim 1 is characterized in that: The slide groove (4-1) is a spiral groove arranged on the surface of the cam (4).

3. The automatic opening and closing device for the floor door of a construction elevator according to claim 1 is characterized in that: A second spring (8) is provided between the long rod (5) and the landing door (2).

4. The automatic opening and closing device for the floor door of a construction elevator according to claim 1 is characterized in that: The automatic switch device has a first state. In the first state, the bumper (3) is located in the installation groove of the discharge door (1), and the bumper (3) is pressed on the first spring (7). The baffle (6) is located on one side of the discharge door (1) to limit the bumper (3) from moving outward.

5. The automatic opening and closing device for the floor door of a construction elevator according to claim 4 is characterized in that: The automatic switch device has a second state. In the second state, the discharge door (1) moves relative to the baffle (6), the baffle (6) releases the restriction on the collision block (3), and the collision block (3) slides in the slide groove (4-1), causing the long rod (5) to rotate and push the layer door (2) to open.

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