Bridge crane capable of preventing lifting appliance from inclining

Abstract

The bridge crane comprises a crane beam frame, a crane carriage is arranged at the top end of the crane beam frame, a hoisting mechanism is arranged at the top end of the crane carriage, the lifting appliance is arranged below the crane beam frame, the lifting appliance comprises a supporting beam, a movable pulley block is arranged at the top end of the supporting beam, a chain is fixed at the bottom end of the supporting beam, and a lifting hook is fixed at the bottom end of the chain; a first anti-inclination mechanism is arranged between the supporting beam and the hoisting trolley, the first anti-inclination mechanism comprises a first supporting pipe, the lower end of the first supporting pipe is sleeved with a first sliding rod, and the bottom end of the first sliding rod is fixed to the top end of the supporting beam; a second anti-inclination mechanism is arranged at the bottom end of the supporting beam and comprises a pressing plate, a vertically-arranged electric push rod is arranged between the pressing plate and the supporting beam, the top end of the electric push rod is fixed to the bottom end of the supporting beam, and the bottom end of the electric push rod is fixed to the top end of the pressing plate. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] The utility model belongs to the technical field of cranes, and in particular relates to a bridge crane capable of preventing a sling from tilting. Background Art

[0002] In modern industry, cranes, as an important equipment, play a key role in manufacturing, logistics and infrastructure construction. They can not only efficiently carry heavy objects, but also operate flexibly in various complex environments, greatly improving work efficiency and production safety. Bridge cranes include single-beam bridge cranes and double-beam bridge cranes. Bridge cranes are suitable for indoor scenes such as workshops and warehouses. They have simple structures and stable operations. Bridge cranes generally include crane beams, trolley travel mechanisms, lifting trolleys, lifting mechanisms and slings. The sling is connected to the lifting mechanism by a steel wire rope, and the steel wire rope is wound or released by the lifting drum of the lifting mechanism to pull the hook up and down to a certain height. In order to adapt to the lifting of long strips of goods of different specifications, some crane slings lift the goods by binding the hook with two symmetrically arranged flexible steel wire ropes or chains. Since the steel wire rope is flexible, the sling is prone to swing and tilt when the bridge crane lifts the goods, especially when lifting long strips of goods and the center of gravity of the goods is not at the center position, the sling is more likely to tilt and swing. Therefore, in the prior art, the sling is prone to swing and tilt. Utility Model Content

[0003] In order to solve the technical problem that the existing bridge crane hoist is prone to swinging and tilting, the utility model provides a bridge crane with a hoist that can prevent tilting, including a crane beam frame, which plays a supporting role. The crane beam frame includes two transverse beams that are arranged at intervals and two longitudinal beams that are arranged longitudinally. The two longitudinal beams are respectively detachable and fixed at both ends of the cross beams, and both ends of the longitudinal beams are provided with a first walking mechanism. The first walking mechanism includes a first walking wheel rotatably mounted on the longitudinal beam, a first motor is fixed on the outer side of the longitudinal beam, a power output shaft of the first motor is transmission-connected to the first walking wheel, the first motor is connected to a power supply and a crane control system through a cable, the first motor is started, and the first motor drives the first walking wheel to rotate, so that the longitudinal position of the crane beam can be adjusted. A lifting trolley is provided at the top of the crane beam frame. The lifting trolley includes a horizontally arranged trolley frame. A second traveling mechanism is provided at the four corners of the bottom end of the trolley frame. The second traveling mechanism includes a second traveling wheel rotatably mounted on the trolley frame. A second motor corresponding to the second traveling wheel is fixed on the trolley frame. The power output shaft of the second motor is connected to the second traveling wheel by transmission. The second motor is connected to the power supply and the control system of the crane through a cable. The second motor is started, and the second motor drives the second traveling wheel to rotate. The second traveling wheel moves laterally along the track at the top of the crossbeam, so as to adjust the lateral position of the lifting trolley. A lifting mechanism is provided at the top of the lifting trolley. The lifting mechanism includes a horizontally arranged lifting drum. Both ends of the lifting drum are rotatably mounted on the trolley frame. A lifting motor is fixed on the trolley frame at one end of the lifting drum. The power output shaft of the lifting motor is connected to the lifting drum by transmission. The lifting motor drives the lifting drum to rotate. The lifting drum moves in the vertical direction by pulling the sling with a wire rope, and the height of the sling can be adjusted. A sling is provided below the crane beam frame, and the sling includes a horizontally arranged support beam, which plays a supporting role. Both sides of the top of the support beam are provided with movable pulley blocks, which are connected to the lifting mechanism through steel wire ropes. Chains are detachably fixed on both sides of the bottom of the support beam, and a hook is fixed at the bottom of the chain. A first anti-tilt mechanism is provided between the support beam and the lifting trolley, and the first anti-tilt mechanism includes two first support tubes, the top of the first support tube is detachably fixed to the bottom of the lifting trolley, and the lower end of the first support tube is slidably sleeved with a first slide rod, and the bottom end of the first slide rod is detachably fixed to the top of the support beam. The setting of the first anti-tilt mechanism can reduce the swing of the steel wire rope between the lifting drum and the sling, and is more stable when the sling lifts goods.A second anti-tilt mechanism is provided at the bottom end of the support beam, and the second anti-tilt mechanism includes a pressure plate arranged below the support beam and parallel to the support beam, a vertically arranged electric push rod is provided between the pressure plate and the support beam, the top end of the electric push rod is fixed to the bottom end of the support beam, and the bottom end of the electric push rod is fixed to the top end of the pressure plate, the electric push rod is connected to the power supply and the crane control system through a cable, and the second anti-tilt mechanism is set to start the electric push rod, and the free end of the electric push rod extends and pushes the pressure plate to abut against the cargo. Under the action of the pressure plate, each chain always remains in a taut state, which can reduce the swing and tilt of the cargo and improve the stability of the sling lifting the cargo.

[0004] Preferably, a vertically arranged second support tube is provided on both sides of the electric push rod, the top end of the second support tube is fixed to the bottom end of the support beam, the lower end of the second support tube is slidably sleeved with a vertically arranged second sliding rod, and the bottom end of the second sliding rod is fixed to the top end of the pressure plate. The setting of the second support tube and the second sliding rod supports the pressure plate.

[0005] Preferably, the hoisting drum is a double drum, which is a hoisting drum with two symmetrically arranged wire rope grooves. The hoisting drum can be driven to rotate by a hoisting motor, and the two movable pulley blocks on the sling can be pulled up or down synchronously by the wire rope.

[0006] Preferably, buffers are provided at both ends of the longitudinal beam.

[0007] The above solution has the following advantages:

[0008] The setting of the first anti-tilt mechanism can reduce the swing of the wire rope between the lifting drum and the sling, making the sling more stable when lifting goods; the setting of the second anti-tilt mechanism starts the electric push rod, the free end of the electric push rod extends and pushes the pressure plate to abut the goods. Under the action of the pressure plate, each chain always remains in a taut state, which can reduce the swing and tilt of the goods and improve the stability of the sling lifting the goods; the double drum is a lifting drum with two symmetrically arranged wire rope grooves, which can be driven to rotate by a lifting motor, and the two movable pulley groups on the sling are pulled up or down synchronously by the wire rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model.

[0010] Figure numerals: 1. crane beam; 2. lifting trolley; 3. lifting equipment; 4. first anti-tilt mechanism; 5. second anti-tilt mechanism; 6. cargo; 11. cross beam; 12. longitudinal beam; 13. first traveling mechanism; 14. first traveling wheel; 15. first motor; 16. buffer; 21. trolley frame; 22. second traveling mechanism; 23. second traveling wheel; 24. second motor; 25. lifting mechanism; 26. lifting drum; 27. lifting motor; 28. wire rope; 31. support beam; 32. movable pulley block; 33. chain; 34. hook; 41. first support tube; 42. first slide rod; 51. pressure plate; 52. electric push rod; 53. second support tube; 54. second slide rod. DETAILED DESCRIPTION

[0011] like Figure 1As shown, a bridge crane for preventing sling from tilting includes a crane beam 1, which plays a supporting role. The crane beam 1 includes two transverse and spaced-apart cross beams 11 and two longitudinally arranged longitudinal beams 12. The two longitudinal beams 12 are respectively detachably fixed at both ends of the cross beam 11, and both ends of the longitudinal beam 12 are provided with a first walking mechanism 13. The first walking mechanism 13 includes a first walking wheel 14 rotatably mounted on the longitudinal beam 12. A first motor 15 is fixed to the outer side of the longitudinal beam 12. The power output shaft of the first motor 15 is transmission-connected to the first walking wheel 14. The first motor 15 is connected to the power supply and the crane control system through a cable. The first motor 15 is started, and the first motor 15 drives the first walking wheel 14 to rotate, so that the longitudinal position of the crane beam 1 can be adjusted. A lifting trolley 2 is provided at the top of the crane beam 1. The lifting trolley 2 includes a horizontally arranged trolley frame 21. A second walking mechanism 22 is provided at the four corners of the bottom end of the trolley frame 21. The second walking mechanism 22 includes a second walking wheel 23 rotatably mounted on the trolley frame 21. A second motor 24 corresponding to the second walking wheel 23 is fixed on the trolley frame 21. The power output shaft of the second motor 24 is transmission-connected to the second walking wheel 23. The second motor 24 is connected to the power supply and the control system of the crane through a cable. The second motor 24 is started, and the second motor 24 drives the second walking wheel 23 to rotate. The second walking wheel 23 moves laterally along the track at the top of the beam 11, thereby adjusting the lateral position of the lifting trolley 2. A lifting mechanism 25 is provided at the top of the lifting trolley 2. The lifting mechanism 25 includes a horizontally arranged lifting drum 26. Both ends of the lifting drum 26 are rotatably mounted on the trolley frame 21. A lifting motor 27 is fixed on the trolley frame 21 at one end of the lifting drum 26. The power output shaft of the lifting motor 27 is in transmission connection with the lifting drum 26. The lifting motor 27 drives the lifting drum 26 to rotate. The lifting drum 26 pulls the sling 3 to move in the vertical direction through the wire rope 28, and the height of the sling 3 can be adjusted. A sling 3 is provided below the crane beam 1. The sling 3 includes a horizontally arranged support beam 31. The support beam 31 plays a supporting role. Both sides of the top of the support beam 31 are provided with movable pulley blocks 32. The movable pulley blocks 32 are connected to the lifting mechanism 25 through the wire rope 28. Chains 33 are detachably fixed on both sides of the bottom of the support beam 31. A hook 34 is fixed at the bottom of the chain 33. A first anti-tilt mechanism 4 is provided between the support beam 31 and the lifting trolley 2. The first anti-tilt mechanism 4 includes two first support tubes 41. The top end of the first support tube 41 can be detachably fixed to the bottom end of the lifting trolley 2. The lower end of the first support tube 41 can be slidably sleeved with a first slide rod 42. The bottom end of the first slide rod 42 can be detachably fixed to the top end of the support beam 31. The setting of the first anti-tilt mechanism 4 can reduce the swing of the wire rope 28 between the lifting drum 26 and the sling 3, making it more stable when the sling 3 lifts the cargo 6.A second anti-tilt mechanism 5 is provided at the bottom end of the support beam 31, and the second anti-tilt mechanism 5 includes a pressure plate 51 arranged below the support beam 31 and parallel to the support beam 31, and a vertically arranged electric push rod 52 is provided between the pressure plate 51 and the support beam 31, and the top end of the electric push rod 52 is fixed to the bottom end of the support beam 31, and the bottom end of the electric push rod 52 is fixed to the top end of the pressure plate 51, and the electric push rod 52 is connected to the power supply and the crane control system through a cable. The second anti-tilt mechanism 5 is set to start the electric push rod 52, and the free end of the electric push rod 52 extends and pushes the pressure plate 51 to abut against the cargo 6. Under the action of the pressure plate 51, each chain 33 is always kept in a taut state, which can reduce the swinging and tilting of the cargo 6 and improve the stability of the sling 3 in lifting the cargo.

[0012] Preferably, a vertically arranged second support tube 53 is provided on both sides of the electric push rod 52, the top end of the second support tube 53 is fixed to the bottom end of the support beam 31, the lower end of the second support tube 53 is slidably sleeved with a vertically arranged second sliding rod 54, the bottom end of the second sliding rod 54 is fixed to the top end of the pressure plate 51, and the setting of the second support tube 53 and the second sliding rod 54 supports the pressure plate 51.

[0013] Preferably, the lifting drum 26 is a double drum, which is a lifting drum with two symmetrically arranged wire rope grooves. The lifting drum 26 can be driven to rotate by a lifting motor 27, and the two movable pulley groups 32 on the sling 3 can be pulled up or down synchronously by the wire rope 28.

[0014] Preferably, buffers 16 are provided at both ends of the longitudinal beam 12 .

[0015] Usage process:

[0016] When the utility model is in use, the position of the lifting trolley 2 is adjusted according to the demand for lifting the cargo 6. First, the first motor 15 is started, and the first motor 15 drives the first running wheel 14 to rotate, so that the longitudinal position of the crane beam frame 1 can be adjusted. The second motor 24 is started, and the second motor 24 drives the second running wheel 23 to rotate. The second running wheel 23 moves laterally along the track at the top of the crossbeam 11, so that the lateral position of the lifting trolley 2 can be adjusted, and the lifting trolley 2 is moved to the top of the cargo 6; then the lifting motor 27 is started, and the lifting motor 27 drives the lifting drum 26 to rotate and releases the wire rope 2 8. The sling 3 moves up and down in the vertical direction until the hook 34 can hang the cargo 6, and then the electric push rod 52 is started. The electric push rod 52 pushes the pressure plate 51 downward until the pressure plate contacts and presses against the cargo 6, so that the chain 33 is tightened, and the lifting motor 27 is started in the reverse direction. The lifting motor 27 drives the lifting drum 26 to rotate and wind the wire rope 28. The wire rope 28 pulls the upper support beam 31 to rise. During the rising process of the support beam, the first slide rod 42 slides toward the first support tube 41. After the cargo 6 moves to the specified position, the electric push rod 52 is started. The electric push rod 52 pulls the pressure plate 51 upward to unload the cargo.

[0017] In the description of the present invention, it should be understood that the terms "up", "down", "left", "right", "top", "bottom", "horizontal", "vertical", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0018] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A bridge crane for preventing spreader tilting, comprising a crane beam, a lifting trolley is provided at the top of the crane beam, and a lifting mechanism is provided at the top of the lifting trolley, characterized in that: A hoist is provided under the crane beam frame, and the hoist includes a horizontally arranged support beam, and movable pulley groups are provided on both sides of the top end of the support beam, and the movable pulley groups are connected to the lifting mechanism through steel wire ropes, and chains are detachably fixed on both sides of the bottom end of the support beam, and a hook is fixed on the bottom end of the chain; a first anti-tilt mechanism is provided between the support beam and the lifting trolley, and the first anti-tilt mechanism includes two first support tubes, and the top end of the first support tube is detachably fixed to the bottom end of the lifting trolley, and the lower end of the first support tube is slidably sleeved with a first sliding rod, and the bottom end of the first sliding rod is detachably fixed to the top end of the support beam; a second anti-tilt mechanism is provided at the bottom end of the support beam, and the second anti-tilt mechanism includes a pressure plate arranged below the support beam and parallel to the support beam, and a vertically arranged electric push rod is provided between the pressure plate and the support beam, and the top end of the electric push rod is fixed to the bottom end of the support beam, and the bottom end of the electric push rod is fixed to the top end of the pressure plate.

2. The bridge crane for preventing the spreader from tilting according to claim 1, characterized in that : A vertically arranged second support tube is provided on both sides of the electric push rod, the top end of the second support tube is fixed to the bottom end of the support beam, the lower end of the second support tube is slidably sleeved with a vertically arranged second sliding rod, and the bottom end of the second sliding rod is fixed to the top end of the pressure plate.

3. The bridge crane for preventing the spreader from tilting according to claim 1, characterized in that The crane beam frame includes two transverse beams arranged at intervals and two longitudinal beams arranged longitudinally. The two longitudinal beams are detachably fixed at both ends of the transverse beams, and both ends of the longitudinal beams are provided with a first walking mechanism. The first walking mechanism includes a first walking wheel rotatably mounted on the longitudinal beam, a first motor is fixed on the outer side of the longitudinal beam, and a power output shaft of the first motor is transmission-connected to the first walking wheel.

4. The bridge crane for preventing the spreader from tilting according to claim 1, characterized in that The lifting trolley includes a horizontally arranged trolley frame, and a second traveling mechanism is provided at the four corners of the bottom end of the trolley frame. The second traveling mechanism includes a second traveling wheel rotatably mounted on the trolley frame, and a second motor corresponding to the second traveling wheel is fixed on the trolley frame, and a power output shaft of the second motor is transmission-connected to the second traveling wheel.

5. The bridge crane for preventing the spreader from tilting according to claim 4, characterized in that The lifting mechanism includes a horizontally arranged lifting drum, both ends of which are rotatably mounted on a trolley frame, a lifting motor is fixed on the trolley frame at one end of the lifting drum, and a power output shaft of the lifting motor is transmission-connected to the lifting drum.

6. The bridge crane for preventing the spreader from tilting according to claim 5, characterized in that :The lifting drum should be a double drum.

7. The bridge crane for preventing the spreader from tilting according to claim 3, characterized in that : Buffers are provided at both ends of the longitudinal beam.

Images