Foreign matter detection device for lifting channel of construction hoist

Abstract

The utility model provides a foreign matter detection device for a lifting channel of a construction hoist, which relates to the technical field of construction hoists, and comprises a lift car and a guardrail arranged at the top end of the lift car, the guardrail is provided with a guardrail sleeve, a movable detection rod is arranged in the guardrail sleeve, the top end of the detection rod is fixedly connected with a clamping piece, and the clamping piece is fixedly connected with the lifting channel of the construction hoist. A clamping piece is arranged at the bottom end of the detection rod, an extrusion spring installed on the outer side of the detection rod is arranged between the clamping piece and the guardrail sleeve, a connecting piece is installed at the bottom end of the detection rod and connected with a travel switch installed on the guardrail sleeve, sleeves are arranged on the two sides of the lift car, movable sleeve rods are arranged in the two sleeves, and the movable sleeve rods are connected with the clamping piece. Limiting pieces are arranged at the top ends of the sleeve rods, a trigger rod is connected between the bottom ends of the two sleeve rods, and a weight sensor connected with the trigger rod is arranged at the bottom end of the lift car. Foreign matter in a channel can be detected and fed back, collision of the lift in the ascending and descending process is avoided, and the safety of equipment and personnel is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of construction hoists, in particular to a foreign object detection device for the lifting passage of a construction hoist. Background Technique

[0002] A construction hoist is a vertical transportation device widely used in high-rise building construction, mainly used for transporting personnel and building materials, and can move vertically along the outer wall or internal structure of a building, greatly improving construction efficiency and safety. However, with the increase in building height and the complexity of the construction environment, the safety problems of construction hoists have become increasingly prominent.

[0003] In the prior art, during the operation of a construction hoist, safety is mainly ensured by manual monitoring and simple mechanical limit devices. However, these traditional methods have many deficiencies. For example, relying on manual observation to monitor foreign objects in the hoist passage has a visual blind area and it is difficult to detect all potential obstacles in real time and comprehensively. Especially at night or under poor lighting conditions, the accuracy and timeliness of detection are greatly reduced. Traditional detection devices usually have a slow response speed. When the hoist is rising or falling at high speed, these devices may not be able to detect and feedback foreign object information in time, leading to potential safety hazards. Content of the Utility Model

[0004] The purpose of the utility model is to provide a foreign object detection device for the lifting passage of a construction hoist, and solve the problem of potential safety hazards caused by the inability to detect and feedback foreign object information in time when the hoist is rising or falling at high speed as mentioned in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A foreign object detection device for the lifting passage of a construction hoist, including a car and a guardrail installed at its top. A guardrail sleeve is arranged on the guardrail. A movable detection rod is arranged in the guardrail sleeve. A clamping piece is fixedly connected to the top of the detection rod. An extrusion spring installed outside the detection rod is arranged between the clamping piece and the guardrail sleeve;

[0006] A connecting piece is installed at the bottom end of the detection rod, and the connecting piece is connected to a travel switch installed on the guardrail sleeve;

[0007] Sleeves are arranged on both sides of the car. Movable sleeve rods are arranged in both sleeves. A limiting piece is arranged at the top end of the sleeve rod;

[0008] A trigger rod is connected between the bottom ends of the two sleeve rods;

[0009] A weight sensor connected to the trigger rod is arranged at the bottom end of the car.

[0010] Preferably, a tension spring is connected between the connecting piece and the guardrail.

[0011] Preferably, the guardrail sleeve, the detection rod, the clamping piece, the compression spring, the connecting piece, the travel switch and the tension spring are all symmetrically arranged on the left and right sides of the car.

[0012] Preferably, a detection bar is installed at the top of the two clamping pieces.

[0013] Preferably, a movable groove is provided at the connection between the trigger rod and the sleeve rod.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The guardrail sleeve allows the detection rod to slide inside it. The clamping piece can limit the compression spring outside the detection rod, enabling the detection rod to rebound. When the detection rod is pressed down, it drives the connecting piece to trigger the travel switch. The travel switch transmits the trigger signal to the car, enabling it to stop in time for timely detection and feedback of foreign objects in the ascending channel, avoiding collisions during the ascending process of the elevator, protecting the safety of equipment and personnel. The sleeve allows the sleeve rod to slide inside it. The limiting piece can limit the sliding range of the sleeve rod. The trigger rod and the weight sensor can detect foreign objects through weight changes, providing accurate feedback, and monitoring foreign objects in the channel in real time during the descending process of the elevator to prevent possible collisions or obstructions and ensure the safety of the descending process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 is a schematic diagram of the top structure of the car of the present utility model;

[0018] Figure 3 is a schematic diagram of the bottom structure of the car of the present utility model;

[0019] Figure 4 is an enlarged schematic diagram of part A of the present utility model.

[0020] Reference numerals in the figures: 1, car; 2, guardrail; 3, guardrail sleeve; 4, detection rod; 5, clamping piece; 6, compression spring; 7, connecting piece; 8, travel switch; 9, sleeve; 10, sleeve rod; 11, limiting piece; 12, trigger rod; 13, weight sensor; 14, tension spring; 15, detection bar; 16, movable groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1-4 As shown, the present invention provides a technical solution: a foreign object detection device for the lifting passage of a construction elevator, including a car 1 and a guardrail 2 installed at its top. A guardrail sleeve 3 is provided on the guardrail 2, and a movable detection rod 4 is arranged inside the guardrail sleeve 3. A clamping piece 5 is fixedly connected to the top of the detection rod 4, and a compression spring 6 installed outside the detection rod 4 is arranged between the clamping piece 5 and the guardrail sleeve 3;

[0023] A connecting piece 7 is installed at the bottom end of the detection rod 4, and the connecting piece 7 is connected to a travel switch 8 installed on the guardrail sleeve 3;

[0024] Sleeves 9 are arranged on both sides of the car 1, and movable sleeve rods 10 are arranged inside both sleeves 9. A limiting piece 11 is arranged at the top end of the sleeve rod 10;

[0025] A trigger rod 12 is connected between the bottom ends of the two sleeve rods 10;

[0026] A weight sensor 13 connected to the trigger rod 12 is arranged at the bottom end of the car 1;

[0027] The guardrail sleeve 3 can enable the detection rod 4 to slide inside it. The clamping piece 5 can limit the compression spring 6 outside the detection rod 4, enabling the detection rod 4 to rebound. When the detection rod 4 is pressed down, it drives the connecting piece 7 to trigger the travel switch 8. The travel switch 8 transmits a trigger signal to the car 1, enabling it to stop in time to detect and feedback foreign objects in the ascending passage in time, avoiding collisions during the ascending process of the elevator, and protecting the safety of the equipment and personnel. The sleeve 9 can enable the sleeve rod 10 to slide inside it. The limiting piece 11 can limit the sliding range of the sleeve rod 10. The trigger rod 12 and the weight sensor 13 can detect foreign objects through weight changes, provide accurate feedback, and monitor foreign objects in the passage in real time during the descending process of the elevator, preventing possible collisions or obstructions, and ensuring the safety of the descending process.

[0028] Furthermore, a tension spring 14 is connected between the connecting piece 7 and the guardrail 2. The tension spring 14 can further ensure the rebound of the connecting piece 7 to restore the detection rod 4 to the waiting trigger state.

[0029] Furthermore, the guardrail sleeve 3, the detection rod 4, the clamping piece 5, the compression spring 6, the connecting piece 7, the travel switch 8 and the tension spring 14 are symmetrically arranged about the left and right of the car 1, which can ensure the smoothness of triggering.

[0030] Furthermore, a detection bar 15 is installed at the top of the two clamping pieces 5, which can increase the detection area and make the detection more comprehensive.

[0031] Furthermore, an activity groove 16 is provided at the connection between the trigger rod 12 and the sleeve rod 10, and the activity groove 16 can prevent the trigger rod 12 from being stuck and thus failing.

[0032] Working principle: First, move a foreign object detection device for the lifting passage of a construction hoist to the working position. When in use, in the first step, the car 1 ascends. When a foreign object touches the detection bar 15 and presses it down, the detection bar 15 drives the clamping piece 5 to press down, drives the detection rod 4 to press down, and drives the connecting piece 7 to press down, thereby triggering the travel switch 8. In the second step, the travel switch 8 transmits a signal to the control system of the car 1 to stop ascending. After the foreign object is cleared, through the combined action of the compression spring 6 and the tension spring 14, the detection bar 15 is restored to the state of waiting to be triggered. In the third step, the car 1 descends. When a foreign object touches the trigger rod 12, the trigger rod 12 ascends, triggering the weight sensor 13. In the fourth step, the weight sensor 13 transmits a signal to the control system of the car 1 to stop descending. After the foreign object is cleared, the trigger rod 12 naturally falls by gravity and is restored to the state of waiting to be triggered. In this way, the use process of a foreign object detection device for the lifting passage of a construction hoist is completed.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. 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 hoistway, comprising a car (1) and a guardrail (2) mounted on the top of the car, characterized in that: The guardrail (2) is provided with a guardrail sleeve (3), a movable detection rod (4) is provided inside the guardrail sleeve (3), a locking piece (5) is fixedly connected to the top of the detection rod (4), and an extrusion spring (6) installed on the outside of the detection rod (4) is provided between the locking piece (5) and the guardrail sleeve (3); A connecting piece (7) is installed at the bottom end of the detection rod (4), and the connecting piece (7) is connected to a travel switch (8) installed on the guardrail sleeve (3); Sleeves (9) are provided on both sides of the car (1), movable sleeve rods (10) are provided in the two sleeves (9), and limit plates (11) are provided at the top ends of the sleeve rods (10); A trigger rod (12) is connected between the bottom ends of the two sleeve rods (10); A weight sensor (13) connected to a trigger rod (12) is provided at the bottom end of the elevator car (1).

2. A foreign body detection device for a construction elevator hoistway according to claim 1, characterized in that: A tension spring (14) is connected between the connecting piece (7) and the guardrail (2).

3. A foreign body detection device for a construction elevator hoistway according to claim 2, characterized in that: The guardrail sleeve (3), the detection rod (4), the positioning plate (5), the extrusion spring (6), the connecting plate (7), the travel switch (8) and the tension spring (14) are all arranged symmetrically on the left and right sides of the car (1).

4. A foreign body detection device for a construction elevator hoistway according to claim 3, characterized in that: A detection bar (15) is installed on the top of the two locking pieces (5).

5. The foreign body detection device for the hoisting channel of a construction hoist according to claim 1 is characterized in that: A movable groove (16) is provided at the connection between the trigger rod (12) and the sleeve rod (10).

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