Double-hook intelligent portal crane

Abstract

A double-hook intelligent portal crane comprises a crane beam frame, a crane carriage is assembled at the top end of the crane beam frame, a hoisting mechanism is arranged at the top end of the crane carriage, supporting legs are fixed to the bottom end of the crane beam frame, a lower end beam is arranged below the crane beam frame, a cart walking mechanism is assembled at the end of the lower end beam, and a lifting appliance is arranged below the crane carriage. The lifting appliance comprises an upper supporting beam, a movable pulley block is assembled at the top end of the upper supporting beam and connected to the lifting mechanism through a steel wire rope, a rotating shaft is assembled on the upper supporting beam, a rotary motor is fixed to the top end of the upper supporting beam, a lower supporting beam is arranged below the upper supporting beam, and the lower end of the rotating shaft is fixedly connected with the lower supporting beam. A supporting arm is arranged at the bottom end of the lower supporting beam, a lifting hook is fixed to the bottom end of the supporting arm, and a second electric push rod is obliquely arranged between the supporting arm and the lower supporting beam. The device is simple in structure and convenient to use.

Description

Technical Field

[0001] The invention belongs to the technical field of cranes, and in particular relates to a double-hook intelligent gantry crane. Background Art

[0002] A crane is a multi-action lifting machine that can lift heavy objects vertically and carry them horizontally within a certain range. It is also called an overhead crane, an overhead crane, or a crane. Cranes are generally divided into gantry cranes, bridge cranes, and tower cranes. Gantry cranes are generally used outdoors. Gantry cranes generally include crane beams, crane legs, a lifting trolley, a lifting mechanism, a trolley travel mechanism, a trolley travel mechanism, and a sling. Depending on the application scenario, gantry cranes are divided into single-trolley cranes and double-trolley cranes, that is, they are determined by the number of lifting trolleys equipped on a crane. Existing gantry cranes often require two cranes to cooperate in lifting long objects, such as bridge beams and pipes, and sometimes they need to be lifted on the same crane. Two lifting trolleys are arranged on the machine for lifting. No matter a double-trolley crane is used or two lifting trolleys are operated to lift beam pieces, multiple persons are required to cooperate with the super-control crane to realize lifting. Since multiple lifting trolleys and lifting mechanisms need to be controlled at the same time, it brings great trouble to the crane operator. Moreover, in the prior art, most cranes adopt two parallel I-beam tracks laid on the ground, and the crane trolley traveling mechanism travels along the I-beam track to realize the lifting and transportation of beam pieces, which makes the crane inconvenient to use. Therefore, in the prior art, when a gantry crane lifts beam pieces or pipes, the working efficiency is low and it is inconvenient to use. Summary of the invention

[0003] In order to solve the technical problems that the existing gantry crane is inconvenient to use and has low working efficiency when lifting beams, the present invention provides a double-hook intelligent gantry crane, including a crane beam frame, the crane beam frame includes a main beam and an upper end beam, the upper end beam is fixed to the end of the main beam, a trolley running track is laid on the top of the main beam, a lifting trolley is rotatably installed on the top of the crane beam frame, the lifting trolley includes a horizontally arranged trolley frame, a trolley running mechanism is installed on the trolley frame, the trolley running mechanism includes trolley running wheels rotatably installed on the trolley frame, a trolley running motor is fixed on the trolley frame, and the trolley running motor is drivingly connected to the trolley running wheels. A lifting mechanism is provided at the top of the lifting trolley, and the lifting mechanism includes a horizontally arranged lifting drum, which is rotatably mounted on the trolley frame. A lifting motor is provided on the trolley frame, and the power output shaft of the lifting motor is transmission-connected to the lifting drum. The sling is connected to the lifting drum through a steel wire rope. The lifting motor drives the lifting drum to rotate, and the lifting drum pulls the sling up and down in a vertical direction by retracting and releasing the steel wire rope, thereby realizing the lifting of heavy objects. The four corners of the bottom end of the crane beam are fixed with vertically arranged and height-adjustable supporting legs, the supporting legs include a vertical sleeve, the bottom end of the sleeve is detachably fixed on the lower end beam, the upper end of the sleeve is slidably sleeved with a vertically arranged column, the top end of the column is detachably fixed to the bottom end of the crane beam, and a first electric push rod is arranged in the sleeve, the bottom end of the first electric push rod is hinged to the bottom of the sleeve, the top end of the first electric push rod is hinged to the bottom of the supporting leg, and an inclination sensor is fixed to the top end of the lower end beam; a horizontally arranged strip-shaped flange is provided at the bottom end of the crane beam, the column is detachably fixed to the bottom end of the crane beam through the flange, the inclination sensor and the first electric push rod are connected to the PLC controller and the power supply through cables, the inclination sensor transmits the sensed tilt signal to the PLC controller, and the PLC controller controls the first electric push rod to push the column to move up and down in the sleeve, so that the four supporting legs of the crane can be adjusted to always remain level.Two parallel and spaced lower end beams are provided below the crane beam frame, and the bottom ends of the legs are detachably fixed to the top ends of the lower end beams, a trolley walking mechanism is installed at the end of the lower end beam, a sling for lifting heavy objects is provided below the lifting trolley, the sling comprises a horizontally arranged upper support beam, two symmetrically arranged movable pulley blocks are installed at the top end of the upper support beam, the movable pulley blocks are connected to the lifting mechanism through steel wire ropes, a vertically arranged rotating shaft is rotatably installed on the upper support beam, a vertically arranged slewing motor is fixed at the top end of the upper support beam, a power output shaft of the slewing motor is transmission-connected to the rotating shaft, a horizontally arranged lower support beam is provided below the upper support beam, and the lower end of the rotating shaft is fixedly connected to the lower support beam; The bottom end of the lower support beam is provided with two symmetrically arranged support arms, the top ends of the support arms are hinged at the ends of the lower support beam, a hook is fixed at the bottom ends of the support arms, and an inclined second electric push rod is provided between the support arm and the lower support beam, the upper end of the second electric push rod is hinged at the middle of the bottom end of the lower support beam, the lower end of the second electric push rod is connected to the support arm, the second electric push rod is connected to the PLC controller and the power supply through cables. When in use, the second electric push rod is started respectively, the free end of the second electric push rod is extended, the second electric push rod pushes the two support arms to rotate, and the two hooks move away from each other. After the sling moves above the beam piece, the second electric push rod is started again, and the free end of the second electric push rod pulls the two support arms to rotate and hang the beam piece.

[0004] Preferably, the trolley traveling mechanism includes a slewing support frame fixed to the bottom end of the lower end beam, a walking wheel bracket is provided below the slewing support frame, a walking wheel is rotatably mounted on the walking wheel bracket, a first walking motor is fixed on the walking wheel bracket, and the first walking motor is transmission connected to the walking wheel; the upper end of the walking wheel bracket is rotatably mounted on the slewing support frame through a slewing support, and a second walking motor is also provided on the slewing support frame, and the second walking motor is transmission connected to the walking wheel bracket through a slewing support. The second walking motor can drive the walking wheel bracket to rotate to realize the turning of the crane. The setting of the first walking motor can drive the walking wheel to roll along the ground, thereby driving the entire crane to move.

[0005] Preferably, the lifting drum is a double drum.

[0006] The above solution has the following advantages: The setting of the spreader adjusts the angle of the support arm and the opening angle of the two hooks through the second electric push rod, which makes it easier to hang the hooks and improves efficiency. The slewing motor installed on the spreader can drive the lower support beam to rotate according to construction requirements, thereby adjusting the placement angle of the two beams. The legs are set to be liftable, and the horizontality is detected by the inclination sensor to control the adjustment of the leg length, which can always keep the crane beam in a horizontal state and improve safety. The setting of the trolley walking mechanism drives the walking wheel bracket to rotate through the slewing motor, which makes it convenient for the crane to turn and adjust the moving direction during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the lifting beam structure of the present invention; Figure 3 It is a structural schematic diagram of the sling of the present invention; Figure 4 for Figure 1 A magnified view of part A; Figure 5 for Figure 1 Enlarged view of part B.

[0008] 1. The crane is equipped with a plurality of lifting devices, each of which is provided with a plurality of lifting devices, and a plurality of lifting devices are provided with a plurality of lifting devices. The plurality of lifting devices are provided with a plurality of lifting devices, and a plurality of lifting devices are provided with a plurality of lifting devices. DETAILED DESCRIPTION

[0009] like Figure 1-5As shown, a double-hook intelligent gantry crane includes a crane beam 1, the crane beam 1 includes a main beam and an upper end beam, the upper end beam is fixed to the end of the main beam, a trolley running track is laid on the top of the main beam, the top of the crane beam 1 is rotatably equipped with a lifting trolley 2, the lifting trolley 2 includes a horizontally arranged trolley frame, the trolley frame is equipped with a trolley running mechanism 23, the trolley running mechanism 23 includes a trolley running wheel rotatably mounted on the trolley frame, a trolley running motor is fixed on the trolley frame, and the trolley running motor is drivingly connected to the trolley running wheel. A lifting mechanism 3 is provided at the top of the lifting trolley 2. The lifting mechanism 3 includes a horizontally arranged lifting drum 21. The lifting drum 21 can be rotatably assembled on the trolley frame. A lifting motor 22 is provided on the trolley frame. The power output shaft of the lifting motor 22 is transmission-connected to the lifting drum 21. The sling 6 is connected to the lifting drum 21 through a steel wire rope 31. The lifting motor 22 drives the lifting drum 21 to rotate. The lifting drum 21 pulls the sling 6 up and down in the vertical direction by retracting and releasing the steel wire rope 31, thereby realizing the lifting of heavy objects. Vertically arranged and height-adjustable legs 4 are fixed at the four corners of the bottom end of the crane beam frame 1, and the legs 4 include a vertical sleeve 41, the bottom end of the sleeve 41 is detachably fixed on the lower end beam 7, the upper end of the sleeve 41 is slidably sleeved with a vertically arranged column 42, the top end of the column 42 is detachably fixed to the bottom end of the crane beam frame 1, and a first electric push rod 43 is arranged in the sleeve 41, the bottom end of the first electric push rod 43 is hinged to the bottom of the sleeve 41, the top end of the first electric push rod 43 is hinged to the bottom of the leg 4, and an inclination sensor 71 is fixed to the top end of the lower end beam 7. The bottom end of the crane beam is provided with a horizontally arranged strip-shaped flange 11, and the flange 11 is arranged in a strip shape. The column 42 is detachably fixed to the bottom end of the crane beam 1 through the flange 11. The inclination sensor 71 and the first electric push rod 43 are connected to the PLC controller and the power supply through cables. The inclination sensor 71 transmits the sensed tilt signal to the PLC controller. The PLC controller controls the first electric push rod 43 to push the column 42 up and down in the sleeve 41, so that the four legs 4 of the crane can be adjusted to always remain level.Two parallel and spaced lower end beams 7 are provided below the crane beam frame 1, and the bottom ends of the legs 4 are detachably fixed to the top ends of the lower end beams 7, and the ends of the lower end beams 7 are equipped with a trolley walking mechanism 5. A sling 6 for lifting heavy objects is provided below the lifting trolley 2, and the sling 6 includes a horizontally arranged upper support beam 61, and the top end of the upper support beam 61 is equipped with two symmetrically arranged movable pulley blocks 65, and the movable pulley blocks 65 are connected to the lifting mechanism 3 through a steel wire rope 6. A vertically arranged rotating shaft 62 is rotatably provided on the upper support beam 61, and a vertically arranged rotary motor 63 is fixed to the top end of the upper support beam 61, and the power output shaft of the rotary motor 63 is transmission-connected to the rotary shaft 62. A horizontally arranged lower support beam 64 is provided below the upper support beam 61, and the lower end of the rotary shaft 62 is fixedly connected to the lower support beam 64; The bottom end of the beam 64 is provided with two symmetrically arranged support arms 66, the top ends of the support arms 66 are hinged to the ends of the lower support beam 64, the bottom ends of the support arms 66 are fixed with hooks 68, and a second inclined electric push rod 67 is provided between the support arms 66 and the lower support beam 64, the upper ends of the second electric push rods 67 are hinged to the middle of the bottom end of the lower support beam 64, the lower ends of the second electric push rods 67 are connected to the support arms 66, and the second electric push rods 67 are connected to the PLC controller and the power supply through cables. When in use, the second electric push rods 67 are started respectively, the free ends of the second electric push rods 67 are extended, and the second electric push rods 67 push the two support arms 66 to rotate, and the two hooks 68 move away from each other. After the sling 6 moves to the top of the beam piece, the second electric push rods 67 are started again, and the free ends of the second electric push rods 67 pull the two support arms 66 to rotate and hang the beam piece.

[0010] Preferably, the trolley walking mechanism 5 includes a slewing support frame 52 fixed to the bottom end of the lower end beam 7, a walking wheel bracket 54 is provided below the slewing support frame 52, a walking wheel 55 is rotatably mounted on the walking wheel bracket 54, a first walking motor 56 is fixed on the walking wheel bracket 54, and the first walking motor 56 is transmission connected to the walking wheel 55; the upper end of the walking wheel bracket 54 is rotatably mounted on the slewing support 52, and a second walking motor 53 is also provided on the slewing support frame 51, and the second walking motor 53 is transmission connected to the walking wheel bracket 54 through the slewing support 52, and the second walking motor 53 can drive the walking wheel bracket 54 to rotate, so as to realize the turning of the crane, and the setting of the first walking motor 56 can drive the walking wheel 55 to roll along the ground, thereby driving the entire crane to move.

[0011] Preferably, the lifting drum 21 is a double drum.

[0012] Usage process: When the present invention is in use, the position of the crane is first adjusted through the trolley travel mechanism 5, and the first travel motor 56 and the second travel motor 53 are started respectively. The first travel motor 56 drives the travel wheel 55 to rotate, and the second travel motor 53 drives the travel wheel bracket 54 to rotate, so that the travel wheel 55 turns. The inclination sensor 71 transmits the sensed inclination signal to the PLC controller, and the PLC controller controls the first electric push rod 43 to push the column 42 to move up and down in the sleeve 41, so that the four legs 4 of the crane can be adjusted to always remain horizontal. When the crane moves to the top of the beam piece 8 to be lifted, the second electric push rod 67 is started respectively, and the second electric push rod 6 7, the free end of the second electric push rod 67 pushes the two support arms 66 to rotate, and the two hooks 68 move away from each other. The wire rope 31 is released by the lifting motor 22 and the lifting drum 21. After the sling 6 moves to the top of the beam 8, the rotary motor 63 is started. The rotary motor 63 drives the lower support beam 64 to rotate through the rotating shaft 62, so as to adjust the lower support beam 64 to be parallel to the beam piece 8, and then the second electric push rod 67 is started. The free end of the second electric push rod 67 pulls the two support arms 66 to rotate and hang the beam piece 8, and then the lifting drum 21 pulls the sling 6 upward through the wire rope. After the crane lifts the beam piece 8 to the specified position, the beam piece 8 can be unloaded.

[0013] In the description of the present invention, it is necessary to understand that the terms "up", "down", "left", "right", "top", "bottom", "horizontal", "vertical", etc. indicate orientations or positional relationships 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 cannot be understood as a limitation on the present invention.

[0014] 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 belongs to the protection scope of the present invention.

Claims

1. A double-hook intelligent gantry crane, comprising a crane beam, a trolley is rotatably mounted on the top of the crane beam, a lifting mechanism is arranged on the top of the trolley, vertically arranged and height-adjustable legs are fixed at the four corners of the bottom of the crane beam, two parallel and spaced lower end beams are arranged below the crane beam, and the bottom ends of the legs are detachably fixed to the top of the lower end beam, and a trolley walking mechanism is arranged at the end of the lower end beam, characterized in that: A sling for lifting heavy objects is provided under the lifting trolley, and the sling includes a horizontally arranged upper support beam, and the top of the upper support beam is equipped with two symmetrically arranged movable pulley groups, and the movable pulley groups are connected to the lifting mechanism through steel wire ropes; a vertically arranged rotating shaft is rotatably equipped on the upper support beam, and a vertically arranged rotary motor is fixed on the top of the upper support beam, and a power output shaft of the rotary motor is transmission-connected with the rotating shaft; a horizontally arranged lower support beam is provided under the upper support beam, and the lower end of the rotating shaft is fixedly connected to the lower support beam; two symmetrically arranged support arms are provided at the bottom end of the lower support beam, and the top ends of the support arms are hinged to the ends of the lower support beam, and a hook is fixed to the bottom ends of the support arms, and an inclined second electric push rod is provided between the support arm and the lower support beam, and the upper end of the second electric push rod is hinged to the middle of the bottom end of the lower support beam, and the lower end of the second electric push rod is connected to the support arm.

2. A double-hook intelligent gantry crane according to claim 1, characterized in that: The support leg includes a vertical sleeve, the bottom end of the sleeve is detachably fixed on the lower end beam, the upper end of the sleeve is slidably sleeved with a vertically arranged column, the top end of the column is detachably fixed to the bottom end of the crane beam frame, and a first electric push rod is arranged in the sleeve, the bottom end of the first electric push rod is hinged to the bottom of the sleeve, the top end of the first electric push rod is hinged to the bottom of the support leg, and an inclination sensor is fixed to the top end of the lower end beam.

3. A double-hook intelligent gantry crane according to claim 2, characterized in that: The bottom end of the crane beam is provided with a horizontally arranged strip-shaped flange, and the column is detachably fixed to the bottom end of the crane beam through the flange.

4. The double-hook intelligent gantry crane according to claim 1, characterized in that: The trolley traveling mechanism includes a slewing support frame fixed to the bottom end of the lower end beam, a walking wheel bracket is provided below the slewing support frame, a walking wheel is rotatably mounted on the walking wheel bracket, a first walking motor is fixed on the walking wheel bracket, and the first walking motor is transmission connected to the walking wheel; the upper end of the walking wheel bracket is rotatably mounted on the slewing support frame through a slewing support, and a second walking motor is also provided on the slewing support frame, and the second walking motor is transmission connected to the walking wheel bracket through a slewing support.

5. The double-hook intelligent gantry crane according to claim 1, characterized in that: The lifting trolley includes a horizontally arranged trolley frame, on which a trolley traveling mechanism is mounted, the trolley traveling mechanism includes a trolley traveling wheel rotatably mounted on the trolley frame, a trolley traveling motor is fixed on the trolley frame, and the trolley traveling motor is drivingly connected to the trolley traveling wheel.

6. A double-hook intelligent gantry crane according to claim 5, characterized in that: The lifting mechanism includes a horizontally arranged lifting drum, which is rotatably mounted on a trolley frame. A lifting motor is provided on the trolley frame. The power output shaft of the lifting motor is transmission-connected to the lifting drum, and the sling is connected to the lifting drum via a steel wire rope.

7. A double-hook intelligent gantry crane according to claim 6, characterized in that: The lifting drum shall be a double drum.

Images