Anti-collision automatic stop device for gantry crane

Abstract

The utility model relates to the technical field of cranes, in particular to an anti-collision automatic stop device of a gantry crane, which comprises a travelling crane, an anti-collision mechanism and a brake mechanism, the crane is mounted at the lower ends of the gantry crane supporting legs; the anti-collision mechanism is arranged at the end part of the travelling crane; the braking mechanism is composed of an infrared distance measuring sensor and a second brake pad installed on the side wall of the U-shaped frame, the second brake pad is driven by a hydraulic rod installed on the U-shaped frame, and the second brake pad is arranged close to the side wall of the track. Through the arrangement of the detector and the audible and visual alarm, detection can be performed in advance, an alarm is given, a worker is reminded to perform corresponding operation, obstacles are prevented from colliding with the gantry crane, the loss is reduced, and the use safety is improved; and through the arrangement of the anti-collision mechanism and the braking mechanism, the collision force of an obstacle can be conveniently buffered, and the travelling crane can be quickly braked, so that the gantry crane mounted on the travelling crane is prevented from colliding with the obstacle, the use safety is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of crane technology, specifically to a gantry crane anti-collision self-stop device. Background Technology

[0002] In bridge engineering, the construction of precast beams for the superstructure requires the construction of a precast beam yard. During the fabrication and transportation of the beams, gantry cranes are used to lift the steel reinforcement cage and beams. The site working environment is complex, and improper construction management can lead to serious casualties and economic losses.

[0003] Chinese Patent CN220723366U discloses a gantry crane anti-collision self-stop device, belonging to the field of crane technology. It includes a traveling crane for moving the gantry crane on a track. The traveling crane has a limit switch at one end and a braking assembly at the other end. The braking assembly also includes a motor. When the threaded rod rotates, it drives a guide cylinder to move along a guide groove. This invention uses a piezoelectric switch instead of a wireless detector, significantly reducing the possibility of false alarms. The braking device rapidly increases the friction between the traveling crane and the track after detecting an obstacle, enabling the traveling crane to stop quickly and shortening the braking distance.

[0004] However, the above-mentioned publicly available solutions have the following shortcomings: by setting the limit switch, the gantry crane installed will only stop after a collision. If the impact force is large, it is easy to damage the limit switch and the gantry crane, reducing their service life. Utility Model Content

[0005] The purpose of this utility model is to address the problems existing in the background technology by proposing a gantry crane anti-collision self-stop device.

[0006] The technical solution of this utility model is as follows: A gantry crane anti-collision self-stop device includes a trolley installed at the lower end of the gantry crane's outriggers; an anti-collision mechanism disposed at the end of the trolley, the anti-collision mechanism including an oil pipe detachably installed at the end of the trolley; a drive assembly, one end of which is slidably connected to the inner wall of one end of the oil pipe, and the other end of the drive assembly extending to the outside of the oil pipe; a transmission assembly, one end of which is slidably connected to the inner wall of the other end of the oil pipe, and a U-shaped frame installed at the other end of the transmission assembly, a first brake pad disposed on the U-shaped frame, the first brake pad being positioned directly above the track, hydraulic oil being disposed inside the oil pipe and between the drive assembly and the transmission assembly; and a braking mechanism consisting of an infrared distance sensor and a second brake pad mounted on the side wall of the U-shaped frame, the second brake pad being driven by a hydraulic rod mounted on the U-shaped frame, and the second brake pad being positioned close to the side wall of the track.

[0007] Preferably, the oil pipe is L-shaped and has a mounting base, which is detachably connected to the end of the vehicle by bolts.

[0008] Preferably, the drive assembly includes a first piston plate that is slidably connected to the inner wall of the oil pipe in the horizontal direction; a buffer rod, one end of which extends into the oil pipe and is connected to the first piston plate, and the other end of which extends to the outside of the oil pipe and is fitted with a crash plate; and a first elastic member, one end of which is installed at one end of the oil pipe and the other end of which is installed on the crash plate.

[0009] Preferably, the transmission assembly includes a second piston plate that is slidably connected to the inner wall of the oil pipe in the vertical direction; a transmission rod, one end of which is connected to the second piston plate and the other end of which extends to the outside of the oil pipe and is connected to the U-shaped frame; and a second elastic member, one end of which is installed at the other end of the oil pipe and the other end of which is installed on the U-shaped frame. The second elastic member is configured as a buffer spring and is movably sleeved on the outside of the transmission rod.

[0010] Preferably, the infrared distance sensor consists of an infrared transmitter and an infrared receiver, with extension plates provided at the top of the oil pipe and the top of the anti-collision plate, and the infrared transmitter and infrared receiver respectively mounted on two sets of extension plates.

[0011] Preferably, a detector and an audible and visual alarm are installed on the top of the vehicle, and both the audible and visual alarm and the detector are electrically connected to the controller.

[0012] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects: By setting up detectors and audible and visual alarms, this utility model can detect and alarm in advance, reminding staff to take corresponding actions, avoiding obstacles from colliding with the gantry crane, reducing losses, and improving safety in use; by setting up anti-collision mechanisms and braking mechanisms, it is easy to buffer the impact force of obstacles and quickly stop the crane, thereby avoiding collisions between the gantry crane installed on the crane and obstacles, improving safety in use, and extending service life. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram showing the connection between the braking mechanism and the anti-collision mechanism of this utility model;

[0015] Figure 3 This is a schematic diagram of the internal structure of the oil pipe of this utility model.

[0016] Reference numerals: 1. Vehicle; 2. Detector; 201. Audible and visual alarm; 3. Mounting base; 4. Oil pipe; 401. Oil valve; 5. First piston plate; 501. Buffer rod; 502. Anti-collision plate; 503. First elastic element; 6. Infrared distance sensor; 601. Extension plate; 7. Second piston plate; 701. Transmission rod; 702. Second elastic element; 703. U-shaped frame; 704. First brake pad; 8. Hydraulic rod; 801. Second brake pad. Detailed Implementation

[0017] Example 1

[0018] like Figures 1 to 3 As shown, the present invention proposes a gantry crane anti-collision self-stop device, including a traveling crane 1, an anti-collision mechanism, and a braking mechanism; the traveling crane 1 is installed at the lower end of the gantry crane's outriggers to enable the gantry crane to travel on the track; the anti-collision mechanism is located at the end of the traveling crane 1; the braking mechanism consists of an infrared distance sensor 6 and a second brake pad 801 installed on the side wall of a U-shaped frame 703. The second brake pad 801 is driven by a hydraulic rod 8 installed on the U-shaped frame 703. The second brake pad 801 is located close to the side wall of the track. There are two sets of hydraulic rod 8 and second brake pad 801, and the two sets of second brake pad 801 are symmetrically distributed on both sides of the track.

[0019] The anti-collision mechanism includes an oil pipe 4, a drive assembly, and a transmission assembly; the oil pipe 4 is detachably installed at the end of the traveling vehicle 1; one end of the drive assembly is slidably connected to the inner wall of one end of the oil pipe 4, and the other end of the drive assembly extends to the outside of the oil pipe 4; one end of the transmission assembly is slidably connected to the inner wall of the other end of the oil pipe 4, and a U-shaped frame 703 is installed at the other end of the transmission assembly. A first brake pad 704 is detachably installed on the U-shaped frame 703. The first brake pad 704 is located directly above the track. Hydraulic oil is installed inside the oil pipe 4 and between the drive assembly and the transmission assembly.

[0020] Furthermore, the oil pipe 4 is L-shaped and has a mounting base 3. The mounting base 3 is detachably connected to the end of the traveling vehicle 1 by bolts, which facilitates the disassembly and assembly of the anti-collision mechanism. The top of the oil pipe 4 is equipped with an oil valve 401, which consists of a connecting pipe and a sealing cap for the threaded connecting pipe, which facilitates the replacement of the hydraulic oil inside the oil pipe 4.

[0021] Furthermore, the drive assembly includes a first piston plate 5, a buffer rod 501, and a first elastic element 503; the first piston plate 5 is slidably connected to the inner wall of the oil pipe 4 in the horizontal direction; one end of the buffer rod 501 extends into the oil pipe 4 and is connected to the first piston plate 5, and the other end of the buffer rod 501 extends to the outside of the oil pipe 4 and is equipped with a crash plate 502, and the other end of the crash plate 502 is equipped with a rubber block to protect the crash plate 502; one end of the first elastic element 503 is installed at one end of the oil pipe 4, and the other end is installed on the crash plate 502, the first elastic element 503 is set as a buffer spring, and the first elastic element 503 is movably sleeved on the outside of the buffer rod 501.

[0022] Furthermore, the transmission assembly includes a second piston plate 7, a transmission rod 701, and a second elastic element 702; the second piston plate 7 is slidably connected to the inner wall of the oil pipe 4 in the vertical direction; one end of the transmission rod 701 is connected to the second piston plate 7, and the other end extends to the outside of the oil pipe 4 and is connected to the U-shaped frame 703; one end of the second elastic element 702 is installed at the other end of the oil pipe 4, and the other end is installed on the U-shaped frame 703. The second elastic element 702 is configured as a buffer spring, and the second elastic element 702 is movably sleeved on the outside of the transmission rod 701. The ends of the oil pipe 4 are all provided with through holes, and the diameter of the through holes is larger than the diameter of the buffer rod 501 or the transmission rod 701.

[0023] Furthermore, the infrared distance sensor 6 consists of an infrared transmitter and an infrared receiver. Extension plates 601 are provided at the top of the oil pipe 4 and the top of the anti-collision plate 502, and the infrared transmitter and infrared receiver are respectively installed on the two sets of extension plates 601.

[0024] In this embodiment, when the gantry crane 1 moves along the track and encounters an obstacle that impacts the anti-collision plate 502, the impact force is transmitted to the buffer rod 501, causing the first elastic element 503 to be compressed. Simultaneously, the buffer rod 501 causes the first piston plate 5 to slide along the inner wall of the oil pipe 4 in the horizontal direction. As the first piston plate 5 slides, it pushes the hydraulic oil inside the oil pipe 4 towards the second piston plate 7, which in turn pushes the second piston plate 7 along the inner wall of the oil pipe 4 in the vertical direction. The second piston plate 7 causes the transmission rod 701 to move downwards, stretching the second elastic element 702. Simultaneously, the transmission rod 701 causes the U-shaped frame 703 to move downwards, pushing the first brake pad 704 towards the top of the track to apply pressure to the track, thereby increasing friction. Under the action of friction, even if the kinetic energy is reduced... The system forces the gantry crane 1 to stop relative to the track. The impact force is buffered by the first elastic element 503, the second elastic element 702, and the hydraulic oil, preventing direct impact from causing harm. When the impact force of the obstacle is large, causing the anti-collision plate 502 to move closer to the oil pipe 4, the signal emitted by the infrared transmitter in the infrared distance sensor 6 is received by the infrared receiver. It can detect that the distance between the anti-collision plate 502 and the oil pipe 4 exceeds the set safety threshold. The monitoring information is transmitted to the controller, which activates the two sets of hydraulic rods 8 to drive the corresponding second brake pads 801 to move towards the side wall of the track until the second brake pads 801 are pressed against the side wall of the track, thereby quickly stopping the gantry crane 1 and preventing it from colliding with the obstacle and causing damage.

[0025] Example 2

[0026] like Figure 1 As shown, the gantry crane anti-collision self-stop device proposed in this utility model, compared with the first embodiment, has a detector 2 and an audible and visual alarm 201 installed on the top of the crane 1. Both the audible and visual alarm 201 and the detector 2 are electrically connected to the controller. The detector 2 can be selected as an ultrasonic detection probe or an infrared detection probe as needed. According to the detection and identification efficiency, the user can choose the best probe type.

[0027] In this embodiment, when the detector 2 detects an obstacle in the direction of movement of the crane 1 and the obstacle is about to be within the set safety threshold, it will transmit the monitoring information to the controller. The controller will then activate the audible and visual alarm 201 to sound the alarm and flash the lights, thus reminding the staff to take appropriate actions in advance to prevent the obstacle from hitting the gantry crane, reduce losses, and improve safety.

[0028] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A gantry crane anti-collision self-stop device, characterized in that, include The overhead crane (1) is installed at the lower end of the outriggers of the gantry crane; A collision avoidance mechanism is installed at the end of the vehicle (1). The collision avoidance mechanism includes... Oil pipe (4), which is detachably installed at the end of the vehicle (1); The drive assembly has one end slidably connected to the inner wall of one end of the oil pipe (4), and the other end of the drive assembly extends to the outside of the oil pipe (4); And a transmission assembly, one end of which is slidably connected to the inner wall of the other end of the oil pipe (4), and a U-shaped frame (703) is installed at the other end of the transmission assembly. A first brake pad (704) is provided on the U-shaped frame (703). The first brake pad (704) is located directly above the track. Hydraulic oil is provided inside the oil pipe (4) and between the drive assembly and the transmission assembly. The braking mechanism consists of an infrared distance sensor (6) and a second brake pad (801) mounted on the side wall of the U-shaped frame (703). The second brake pad (801) is driven by a hydraulic rod (8) mounted on the U-shaped frame (703) and is located close to the side wall of the track.

2. The anti-collision self-stop device for a gantry crane according to claim 1, characterized in that, The oil pipe (4) is L-shaped and a mounting seat (3) is provided on the oil pipe (4). The mounting seat (3) is detachably connected to the end of the crane (1) by bolts.

3. The anti-collision self-stop device for a gantry crane according to claim 2, characterized in that, Driver components include The first piston plate (5) is slidably connected to the inner wall of the oil pipe (4) in the horizontal direction; A buffer rod (501) has one end that passes through the inside of the oil pipe (4) and is connected to the first piston plate (5), and the other end of the buffer rod (501) extends to the outside of the oil pipe (4) and is fitted with a crash plate (502). And a first elastic element (503), one end of which is installed on one end of the oil pipe (4) and the other end is installed on the anti-collision plate (502).

4. The gantry crane anti-collision self-stop device according to claim 3, characterized in that, Transmission components include The second piston plate (7) is slidably connected to the inner wall of the oil pipe (4) in the vertical direction; The transmission rod (701) has one end connected to the second piston plate (7) and the other end extended to the outside of the oil pipe (4) and connected to the U-shaped frame (703); And a second elastic element (702), one end of which is installed on the other end of the oil pipe (4) and the other end is installed on the U-shaped frame (703). The second elastic element (702) is configured as a buffer spring and is movably sleeved on the outside of the transmission rod (701).

5. The anti-collision self-stop device for a gantry crane according to claim 3, characterized in that, The infrared distance sensor (6) consists of an infrared transmitter and an infrared receiver. Extension plates (601) are provided at the top of the oil pipe (4) and the top of the anti-collision plate (502). The infrared transmitter and the infrared receiver are respectively installed on the two sets of extension plates (601).

6. The anti-collision self-stop device for a gantry crane according to claim 1, characterized in that, The top of the crane (1) is equipped with a detector (2) and an audible and visual alarm (201), both of which are electrically connected to the controller.

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