Anti-opening safety bolt for discharge door

Abstract

The utility model discloses a discharge door anti-opening safety bolt, which comprises a mounting plate, an electric push rod, a bolt, a sleeve and a fixed bent plate, the electric push rod is fixed on the mounting plate through the fixed bent plate, the driving end of the electric push rod is provided with the bolt, the bolt is movably arranged in the sleeve, the sleeve is fixed on the mounting plate, and the fixed bent plate is fixed on the mounting plate. The mounting plate is mounted on the side, close to the discharging door, of the lifting cage, and a groove used for clamping the plug pin is formed in the discharging door of the lifting cage. When the cage runs, the safety bolt is electrified to stretch out the push rod to lock the discharge door, and when the cage reaches the stopping platform and stops running, the safety bolt acts to retract the push rod, and the discharge door can be normally opened.

Description

Technical Field

[0001] The utility model belongs to the field of construction elevators, and in particular relates to a safety latch for preventing a discharge door from opening. Background Art

[0002] Construction hoists are commonly used in construction and are responsible for the vertical transportation of personnel and goods. Existing construction hoists generally have a feed door and a discharge door. During the up and down movement of the cage, both the feed door and the discharge door have mechanical locking devices. The feed door cannot be opened from the cage, while the discharge door needs to be unloaded. The locking device can be opened manually from the cage to open the discharge door. Under normal circumstances, the discharge door is manually opened for unloading after the cage stops at the floor station. If the discharge door is manually opened during the operation of the cage, there is a risk of falling. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a safety latch to prevent the discharge door from opening. When the cage is running, the safety latch is energized to extend a push rod to lock the discharge door. When the cage reaches the docking platform and stops running, the safety latch retracts the push rod and the discharge door can be opened normally.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a discharge door anti-opening safety latch, comprising a mounting plate, an electric push rod, a latch, a sleeve, and a fixed bent plate. The electric push rod is fixed to the mounting plate by the fixed bent plate, and the driving end of the electric push rod is equipped with a latch, and the latch is movably installed in the sleeve, the sleeve is fixed on the mounting plate, and the mounting plate is installed on the side of the cage close to the discharge door, and the discharge door of the cage is provided with a groove for clamping the latch.

[0005] In the above technical solution, a spring is provided between the electric push rod and the mounting plate.

[0006] In the above technical solution, one side of the mounting plate is connected to the cage via screws.

[0007] In the above technical solution, a bent portion is provided on the fixed bent plate for mounting the electric push rod, and the fixed bent plate is connected to the mounting plate by screws.

[0008] The beneficial effects of the utility model are as follows: the discharge door anti-opening safety latch has a reliable structure and is easy to install, and can effectively prevent the discharge door from opening when the cage is running, which is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is the installation diagram of the utility model.

[0010] Figure 2 It is a schematic diagram of the structure of the utility model.

[0011] Figure 3 It is a schematic diagram of the utility model when the cage is running.

[0012] Figure 4 This is a schematic diagram of the utility model when the cage reaches the docking platform. (The anti-counterfeiting logo of Jianghan Construction Machinery in the 4th figure should be deleted)

[0013] Among them: 1. Safety latch, 2. Cage, 3. Discharge door, 4. Mounting plate, 5. Electric push rod, 6. Latch, 7. Casing, 8. Fixed bent plate, 9. Spring, 10. Groove. DETAILED DESCRIPTION

[0014] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0015] like Figure 1 Figure 2 The shown type of discharge door anti-opening safety latch includes a mounting plate 4, an electric push rod 5, a latch 6, a sleeve 7, and a fixed bent plate 8. The electric push rod 5 is fixed to the mounting plate 4 by the fixed bent plate 8. The driving end of the electric push rod 5 is equipped with a latch 6, and the latch 6 is movably installed in the sleeve 7. The sleeve 7 is fixed on the mounting plate 4. The mounting plate 4 is installed on the cage 2 near the discharge door 3. The discharge door 3 of the cage 2 is provided with a groove 10 for clamping the latch 6.

[0016] In the above technical solution, a spring 9 is provided between the electric push rod 5 and the mounting plate 4. The spring 9 effectively reduces the damage of the electric push rod caused by the up and down forces.

[0017] In the above technical solution, one side of the mounting plate 4 is connected to the cage 2 by screws.

[0018] In the above technical solution, a bent portion is provided on the fixed bent plate 8 for mounting the electric push rod 5, and the fixed bent plate 8 is connected to the mounting plate 4 by screws.

[0019] like Figure 3 As shown, when the cage starts to run, the electric push rod 5 is powered on and moves, and the push rod is extended to drive the bolt 6 to move, and the bolt 6 extends into the groove 10 of the discharge door 3. At this time, the discharge door 3 cannot be opened and is in a locked state. The safety bolt 1 is the name of the overall structure of this application.

[0020] like Figure 4 As shown, when the cage reaches the docking platform and stops running, the electric push rod 5 is energized and actuated, and the push rod is retracted to drive the latch 6 to move, and the latch 6 is retracted from the groove 10 of the discharge door 3, and the discharge door can be opened normally at this time.

[0021] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed in the present invention should be included in the protection scope of the present invention.

Claims

1. A discharge door anti-opening safety latch, characterized by: It includes a mounting plate, an electric push rod, a latch, a sleeve, and a fixed bent plate. The electric push rod is fixed to the mounting plate by the fixed bent plate. The driving end of the electric push rod is equipped with a latch, and the latch is movably installed in the sleeve. The sleeve is fixed on the mounting plate. The mounting plate is installed on the side of the cage close to the discharge door, and the discharge door of the cage is provided with a groove for clamping the latch.

2. The discharge door anti-opening safety latch according to claim 1 is characterized in that: A spring is arranged between the electric push rod and the mounting plate.

3. The discharge door anti-opening safety latch according to claim 1 is characterized in that: One side of the mounting plate is connected to the cage via screws.

4. The discharge door anti-opening safety latch according to claim 1 is characterized in that: The fixed bent plate is provided with a bent portion for mounting the electric push rod, and the fixed bent plate is connected to the mounting plate by screws.

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