Device for detecting foreign matters in upper channel of construction hoist

Abstract

The utility model provides a channel foreign matter detection device on a construction hoist, which relates to the technical field of hoists and comprises a lift car, a trigger mechanism is mounted at the bottom end of the lift car and comprises a bearing plate mounted at the bottom end of the lift car, the bearing plate is rotatably connected with a supporting rod through a rotating shaft, a contact piece is mounted at one end of the supporting rod, and the contact piece is connected with the contact piece. The other end of the supporting rod is connected with a travel switch installed at the top end of the lift car, the triggering mechanism is vertically and symmetrically arranged relative to the lift car, and a balance weight is arranged at the end, close to the travel switch, of the supporting rod at the top end of the lift car. The elevator car braking device has the advantages of being low in production cost, easy to install and use and capable of effectively preventing the elevator car from being blocked by foreign matter or extruding people to cause danger in the operation process.

Description

Technical Field

[0001] The utility model relates to the technical field of elevators, in particular to a foreign body detection device for a construction elevator upper passage. Background Art

[0002] A construction elevator, or building construction elevator, is a vertical transportation device designed specifically for construction. Its main function is to provide vertical transportation of personnel and materials during construction. This type of equipment is usually equipped with a number of safety features, including overload protection, door lock linkage mechanism, upper and lower limit switches, and emergency stop system, to ensure the safety of construction personnel and transported materials.

[0003] Traditional construction elevators are prone to safety accidents during use due to the lack of effective foreign object detection and warning systems. In high-rise building construction, foreign objects in the elevator passage may include tools, building material fragments, and even workers' personal belongings. If these foreign objects are not discovered and removed in time, it is very easy to cause elevator failure or accidents, resulting in casualties and property losses. Utility Model Content

[0004] The utility model aims to provide a foreign body detection device for a construction elevator upper passage, so as to solve the problem of lack of effective foreign body detection and early warning system proposed in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a foreign body detection device for a construction elevator upper passage, comprising a car,

[0006] A trigger mechanism is installed at the bottom end of the car;

[0007] The trigger mechanism includes a bearing plate installed at the bottom end of the car, the bearing plate is rotatably connected to a support rod through a rotating shaft, a contact piece is installed at one end of the support rod, and the other end of the support rod is connected to a travel switch installed at the top end of the car;

[0008] The trigger mechanism is arranged symmetrically with respect to the car up and down;

[0009] A counterweight is arranged at one end of the support rod at the top end of the car close to the travel switch.

[0010] Preferably, the trigger mechanism and the counterweight are both arranged symmetrically about the car.

[0011] Preferably, the trigger mechanism at the top of the car has the rotating shaft as the center point, and the weight of one side of the contact piece is less than the weight of the counterweight on the other side; the trigger mechanism at the bottom of the car has the rotating shaft as the center point, and the weight of one side of the contact piece is greater than the weight on the other side.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Through the setting of the trigger mechanism, when the contact piece contacts a foreign object during the ascent or descent of the car, the travel switch can be triggered to transmit the signal to the control system, thereby braking the car to avoid danger. The symmetrical setting of the trigger mechanism can reduce the production cost and facilitate installation and use. The counterweight can increase the weight of the support rod at the top of the car to lift the contact piece so that it can be triggered. The trigger mechanism at the bottom of the car can be in a ready state without a counterweight, which can effectively prevent the car from being blocked by foreign objects or squeezing people during operation and causing danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the top structure of the car of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the bottom end of the car of the present utility model.

[0017] Numbers in the figure: 1, car; 2, load-bearing plate; 3, support rod; 4, contact piece; 5, travel switch; 6, counterweight. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 As shown, the utility model provides a technical solution: a foreign body detection device for a construction elevator upper passage, comprising a car 1,

[0020] A trigger mechanism is installed at the bottom end of the car 1;

[0021] The trigger mechanism includes a load-bearing plate 2 mounted at the bottom end of the car 1, the load-bearing plate 2 is rotatably connected to a support rod 3 via a rotating shaft, a contact piece 4 is mounted at one end of the support rod 3, and the other end of the support rod 3 is connected to a travel switch 5 mounted on the top end of the car 1;

[0022] The trigger mechanism is arranged symmetrically about the car 1 in the upper and lower parts;

[0023] A counterweight 6 is provided at one end of the support rod 3 at the top of the car 1 near the travel switch 5. When the contact piece 4 contacts a foreign object, it can lift the other end of the support rod 3, trigger the travel switch 5, and transmit the signal to the control system of the car 1, so that the car 1 stops rising or falling to avoid danger.

[0024] Furthermore, the trigger mechanism and the counterweight 6 are both arranged symmetrically about the car 1, thereby increasing the detection range.

[0025] Furthermore, the trigger mechanism at the top of the car 1 takes the rotating shaft as the center point, and the weight on one side of the contact piece 4 is less than the weight of the counterweight 6 on the other side. The trigger mechanism at the bottom of the car 1 takes the rotating shaft as the center point, and the weight on one side of the contact piece 4 is greater than the weight on the other side, so that the trigger mechanism remains in a state to be triggered.

[0026] Working principle: First, move a foreign object detection device on the channel of a construction elevator to the working position. When in use, the first step is to start the car 1 to rise. When the foreign object touches the contact piece 4, it is pressed down. The second step is to press the contact piece 4 down to lift the other end of the support rod 3 to trigger the travel switch 5, so that the car 1 stops rising. The third step is to clean the foreign objects on the car 1, and the trigger mechanism returns to the waiting state, and the car 1 continues to rise. This completes the use process of a foreign object detection device on the channel of a construction elevator.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A foreign body detection device for a construction elevator upper passage, comprising a car (1), characterized in that: A trigger mechanism is installed at the bottom end of the car (1); The trigger mechanism comprises a bearing plate (2) mounted at the bottom end of the car (1), the bearing plate (2) being rotatably connected to a support rod (3) via a rotating shaft, a contact piece (4) being mounted at one end of the support rod (3), and the other end of the support rod (3) being connected to a travel switch (5) mounted at the top end of the car (1); The trigger mechanism is arranged symmetrically up and down with respect to the car (1); A counterweight (6) is provided at one end of the support rod (3) at the top end of the car (1) close to the travel switch (5).

2. A foreign body detection device for a construction elevator upper passage according to claim 1, characterized in that: The trigger mechanism and the counterweight (6) are both arranged symmetrically with respect to the car (1).

3. A foreign body detection device for a construction elevator upper passage according to claim 1, characterized in that: The trigger mechanism at the top end of the car (1) takes the rotating shaft as the center point, and the weight of one side of the contact piece (4) is less than the weight of the counterweight (6) on the other side; the trigger mechanism at the bottom end of the car (1) takes the rotating shaft as the center point, and the weight of one side of the contact piece (4) is greater than the weight of the other side.

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