A European style double beam gantry crane

Abstract

The utility model specifically relates to a European double-beam gantry crane, comprising two main beams arranged at intervals, end beams are installed at both ends of the main beams, outriggers are installed at the bottom of the end beams, the outriggers are installed on the top of a large frame, a track is installed on the top of the main beam, a trolley frame travels on the track, a mounting plate is installed on the top of the trolley frame, an electric hoist is installed on the top of the mounting plate, a steel wire rope of the electric hoist passes downward through the mounting plate, the tail of the steel wire rope is installed on a movable pulley, the movable pulley is installed on a pulley frame, a hook is installed at the bottom of the pulley frame, an anti-derail mechanism is arranged below the mounting plate, the anti-derail mechanism can prevent the trolley frame from derailing due to the hook hitting the top and hitting the trolley frame; double protection is performed by rotating a limit switch and an infrared sensor.

Description

Technical Field

[0001] The utility model relates to the field of crane equipment, in particular to a European double-beam gantry crane. Background Art

[0002] Gantry cranes are mainly used outdoors. The trolley traveling mechanism of the gantry crane drives the whole machine to move forward and backward. The trolley frame on the main beam drives the hook to move left and right. The electric hoist drives the hook to move vertically. The limit switch limits the lifting height of the hook to prevent it from hitting the top. However, the heavy hammer type limit switch is easily damaged due to impact, and when a limit switch fails, it will cause danger. The hook hitting the top will lift the trolley frame and cause derailment. Utility Model Content

[0003] The utility model provides a European style double-beam gantry crane.

[0004] The technical scheme of the utility model is achieved as follows: a European double-beam gantry crane comprises two main beams arranged at intervals, end beams are installed at both ends of the main beams, outriggers are installed at the bottom of the end beams, the outriggers are installed on the top of the large frame, a track is installed on the top of the main beam, a small frame is traveled on the track, a mounting plate is installed on the top of the small frame, an electric hoist is installed on the top of the mounting plate, a steel wire rope of the electric hoist passes downward through the mounting plate, the tail of the steel wire rope is installed on a movable pulley, the movable pulley is installed on a pulley frame, a hook is installed at the bottom of the pulley frame, an anti-derail mechanism is arranged below the mounting plate, the anti-derail mechanism comprises a vertical rod fixedly connected to the four corners of the bottom of the mounting plate, a moving plate is fixedly connected to the bottom of the vertical rod, two opposite side surfaces of the two main beams are provided with slide grooves, both sides of the moving plate are slidably arranged in the slide grooves, and a buffer device is installed at the bottom of the moving plate.

[0005] The buffer device comprises a first rubber block and a second rubber block, wherein the first rubber block is mounted on both sides of the bottom of the moving plate, and the second rubber block is mounted on the top of the extension plate, which is fixedly connected to the tops of the two vertical parts of the pulley frame and extends outwards.

[0006] An inclined support plate is connected between the bottom of the extension plate and the outside of the side plate of the pulley frame.

[0007] Vertical plates are fixedly connected to the two sides of the outside of the first rubber block, a buffer plate is arranged between the two vertical plates, connecting shafts are connected to both ends of the buffer plate, strip holes are opened on the vertical plates along their height direction, the connecting shaft passes through the strip holes, and plugs are connected to both ends of the connecting shaft.

[0008] A rotation limit switch is installed at one end of the electric hoist, an infrared receiver is installed at the end of the extension plate, and an infrared sensor is installed at the end of the moving plate, and the positions of the infrared sensor and the infrared receiver correspond.

[0009] The movable plate is located on both side surfaces of the slideway and has two mounting grooves respectively. A vertically arranged rotating shaft is rotatably connected in the mounting groove. A gear is installed on the rotating shaft. The gear is meshed with a rack, and the rack is horizontally installed on the side of the slideway.

[0010] The technical solution of the utility model has the following positive effects: the utility model is provided with a rotary limit switch and an infrared sensor, which has double protection and is more reliable and stable; the rotary limit switch is non-contact, not easy to be damaged, and has a longer service life; if the rotary limit switch fails and the hook continues to rise, the second rubber block on the top of the extension plate on the pulley frame will move upward and enter between the two vertical plates, and the extrusion buffer plate will move upward and squeeze the first rubber block. The rubber has high elasticity and can absorb a large amount of impact energy; even if the hook continues to move upward and hit the moving plate, the two ends of the moving plate are arranged between the two main beams, which play a role in limiting the upward movement without causing the trolley frame to derail; the moving plate moves left and right on the main beam through the cooperation of the gear rack, and does not affect the work of the trolley frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is the front view of the utility model.

[0012] Figure 2 Left view of the connection between the main beam and the movable plate, trolley frame and buffer device.

[0013] Figure 3 Schematic diagram of the connection between the moving plate, gear and buffer device. DETAILED DESCRIPTION

[0014] like Figure 1-3As shown, a European double-beam gantry crane comprises two spaced main beams 1, end beams are installed at both ends of the main beam 1, outriggers are installed at the bottom of the end beams, the outriggers are installed on the top of the large frame, a track 2 is installed on the top of the main beam 1, a small frame 3 travels on the track 2, a mounting plate 4 is installed on the top of the small frame 3, an electric hoist 5 is installed on the top of the mounting plate 4, a steel wire rope of the electric hoist 5 passes downward through the mounting plate 4, the tail of the steel wire rope is installed on a movable pulley 6, the movable pulley 6 is installed on a pulley frame 7, a hook 8 is installed at the bottom of the pulley frame 7, an anti-derail mechanism is arranged below the mounting plate, and the anti-derail mechanism includes a vertical arrangement fixedly connected to the four corners of the bottom of the mounting plate 4. A vertical rod 9 is provided, and a movable plate 10 is fixedly connected to the bottom of the vertical rod 9. Two opposite sides of the two main beams 1 are provided with slide grooves 11. Both sides of the movable plate 10 are slidably arranged in the slide grooves 11, and a buffer device is installed at the bottom of the movable plate 10; specifically, the electric hoist 5 is started, and the wire rope lifting drives the movable pulley 6, the pulley frame 7 and its hook 8 to lift and lower. When it rises to the top, the top of the pulley frame 7 will collide with the movable plate 10, but will not collide with the mounting plate 4 on the trolley frame 3 to lift the trolley frame 3 and cause the trolley frame 3 to derail; the movable plate 10 is arranged in the slide groove 11, and when the trolley frame 3 moves on the track 2, the movable plate 10 also moves with it.

[0015] The buffer device includes a first rubber block 12 and a second rubber block 13. The first rubber block 12 is installed on both sides of the bottom of the movable plate 10, and the second rubber block 13 is installed on the top of the extension plate 14. The extension plate 14 is fixedly connected to the top of the two vertical parts of the pulley frame 7 and extends outward. The two sides of the outside of the first rubber block 12 are fixedly connected with vertical plates 15, and a buffer plate 16 is arranged between the two vertical plates 15. The two ends of the buffer plate 16 are connected with connecting shafts 17. The vertical plates 15 are provided with strip holes 18 along their height direction. The connecting shaft 17 is arranged through the strip holes 18, and the two ends of the connecting shaft 17 are connected with plugs 19. Specifically, when the hook 8 rises to the top, due to inertia, when it does not stop immediately, the second rubber block 13 on the top of the extension plate 14 will enter between the two vertical plates 15 and squeeze the buffer plate 16 to move upward, so that it squeezes the first rubber block 12. The rubber has high elasticity and can absorb a large amount of impact energy.

[0016] An inclined support plate 26 is connected between the bottom of the extension plate 14 and the outside of the side plate of the pulley frame 7 ; the inclined support plate 26 increases the supporting force of the extension plate 14 .

[0017] A rotary limit switch 20 is installed at one end of the electric hoist 5, infrared receivers 21 are installed at the ends of the two extension plates 14, and infrared sensors 22 are installed at both ends of the movable plate 10, and the positions of the infrared sensors 22 and the infrared receivers 21 correspond to each other; specifically, the rotary limit switch 20 limits the rising and falling height of the wire rope. When the wire rope rises to the set height, the rotary limit switch 20 stops the electric hoist from working, thereby preventing the top from hitting the top; if the rotary limit switch 20 fails, the wire rope continues to rise, the hook rises, and the infrared sensor 22 and the infrared receiver 21 work, thereby controlling the electric hoist 5 to stop working, providing double protection.

[0018] The movable plate 10 is located on two side surfaces of the slide groove 11 and has two mounting grooves 25 respectively. A vertically arranged rotating shaft is rotatably connected in the mounting groove 25, and a gear 23 is installed on the rotating shaft. The gear 23 is meshed with a rack 24, and the rack 24 is horizontally installed on the side of the slide groove 11; specifically, when the movable plate 10 follows the horizontal movement of the trolley frame 3, the movement can be smoother through the cooperation of the gear 23 and the rack 24; and when the trolley frame 3 needs to stop moving left and right, the running wheels of the trolley frame can be prevented from continuing to slide for a distance, and the positioning of the gear 23 and the rack 24 is more accurate.

Claims

1. A European double-beam gantry crane, comprising two main beams arranged at intervals, end beams are installed at both ends of the main beams, outriggers are installed at the bottom of the end beams, the outriggers are installed on the top of the large frame, a track is installed on the top of the main beam, a small frame travels on the track, a mounting plate is installed on the top of the small frame, an electric hoist is installed on the top of the mounting plate, a steel wire rope of the electric hoist passes downward through the mounting plate, the tail of the steel wire rope is installed on a movable pulley, the movable pulley is installed on a pulley frame, and a hook is installed at the bottom of the pulley frame, characterized in that: An anti-derail mechanism is arranged below the mounting plate, and the anti-derail mechanism comprises vertical rods which are fixedly connected to the four corners of the bottom of the mounting plate, a movable plate is fixedly connected to the bottom of the vertical rods, sliding grooves are arranged on two opposite sides of the two main beams, and two sides of the movable plate are slidably arranged in the sliding grooves, and a buffer device is installed at the bottom of the movable plate.

2. A European double-beam gantry crane according to claim 1, characterized in that: The buffer device comprises a first rubber block and a second rubber block, wherein the first rubber block is mounted on both sides of the bottom of the moving plate, and the second rubber block is mounted on the top of the extension plate, which is fixedly connected to the tops of the two vertical parts of the pulley frame and extends outwards.

3. A European double-beam gantry crane according to claim 2, characterized in that: An inclined support plate is connected between the bottom of the extension plate and the outside of the side plate of the pulley frame.

4. A European double-beam gantry crane according to claim 2, characterized in that: Vertical plates are fixedly connected to the two sides of the outside of the first rubber block, a buffer plate is arranged between the two vertical plates, connecting shafts are connected to both ends of the buffer plate, strip holes are opened on the vertical plates along their height direction, the connecting shaft passes through the strip holes, and plugs are connected to both ends of the connecting shaft.

5. A European double-beam gantry crane according to claim 3, characterized in that: A rotation limit switch is installed at one end of the electric hoist, an infrared receiver is installed at the end of the extension plate, and an infrared sensor is installed at the end of the moving plate, and the positions of the infrared sensor and the infrared receiver correspond.

6. A European double-beam gantry crane according to claim 2, characterized in that: The movable plate is located on both side surfaces of the slideway and has two mounting grooves respectively. A vertically arranged rotating shaft is rotatably connected in the mounting groove. A gear is installed on the rotating shaft. The gear is meshed with a rack, and the rack is horizontally installed on the side of the slideway.

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