Double-beam cantilever crane

Abstract

The utility model discloses a double-beam cantilever crane. The double-beam cantilever crane comprises a stand column and a hoisting mechanism, a steering mechanism is arranged at the upper end of the stand column, a support is fixedly connected to the upper end of the steering mechanism, guide rails are fixedly connected to the left side and the right side of the upper end of the support, and an advancing vehicle is slidably connected between the upper ends of the two guide rails and driven by a driving mechanism; the hoisting mechanism comprises winding drums and a driving box, fixing seats which are symmetrically distributed front and back are arranged on the left side of the upper surface of the advancing vehicle, the driving box is arranged on the right side of the upper surface of the advancing vehicle, and the winding drums which are symmetrically distributed left and right are rotationally connected between the fixing seats and the driving box through rotating shafts; according to the double-beam cantilever crane, hoisting is conducted through the four sets of winding drums at the same time, the hoisting process is more stable, meanwhile, an advancing mechanism and a driving mechanism of the advancing vehicle are separated, and pressure on wheels of the advancing vehicle is relieved.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a double-beam cantilever crane. Background Technology

[0002] The cantilever crane is designed for light-duty operation. It consists of a column, a slewing boom, a slewing drive, and an electric hoist. The lower end of the column is fixed to a concrete foundation with anchor bolts. The slewing boom is driven by a cycloidal pinwheel reducer, while the electric hoist moves linearly left and right on the H-beam of the boom to lift heavy objects. The crane boom is a hollow steel structure, lightweight, with a large span, high lifting capacity, and is economical and durable.

[0003] Double-girder cantilever cranes consist of two parallel main beams, providing additional support and stability. This design allows the crane to carry heavier loads while maintaining a robust and durable structure. However, the movement of the traveling trolley is achieved by motor-driven wheels sliding on the upper end of the guide rails. The wheels bear both driving and traveling functions, which is a significant burden. In addition, electric hoists typically have only one cable, resulting in poor stability. Therefore, we propose a double-girder cantilever crane. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide a double-beam cantilever crane that lifts simultaneously with four sets of drums, making the lifting process more stable. At the same time, the traveling mechanism and drive mechanism of the traveling vehicle are separated, reducing the pressure on the wheels of the traveling vehicle, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a double-beam cantilever crane, comprising a column and a hoisting mechanism;

[0006] Column: A steering mechanism is provided at its upper end. A bracket is fixedly connected to the upper end of the steering mechanism. Guide rails are fixedly connected to the left and right sides of the upper end of the bracket. A traveling vehicle is slidably connected between the upper ends of the two guide rails. The traveling vehicle is driven by a drive mechanism.

[0007] The hoisting mechanism includes a drum and a drive box. The upper surface of the traveling vehicle has symmetrically distributed fixed seats on the left side and a drive box on the right side. The fixed seats and the drive box are rotatably connected by symmetrically distributed drums on the left and right sides through a rotating shaft. The hoisting process is more stable by lifting with four sets of drums at the same time. At the same time, the traveling mechanism and the drive mechanism of the traveling vehicle are separated, which reduces the pressure on the wheels of the traveling vehicle.

[0008] Furthermore, it also includes a control box, which is located on the right side of the column. A controller is installed on the front side of the control box, and the input terminal of the controller is electrically connected to an external power source to control electrical appliances.

[0009] Further, the hoisting mechanism further comprises worm gears, worms and rotating shafts, the right ends of the rotating shafts are fixedly sleeved with the worm gears, the rotating shafts are rotationally connected between the inner walls of the front and back sides of the driving box, the front and back ends of the rotating shafts are provided with the worms, the worms are respectively meshed with the vertically adjacent worm gears to drive the winding drums to synchronously rotate.

[0010] Further, the hoisting mechanism further comprises motor two, bevel gear one and bevel gear two, the middle part of the rotating shaft is fixedly sleeved with the bevel gear two, the upper surface of the traveling car is fixedly connected with the motor two, the output shaft of the motor two is fixedly sleeved with the bevel gear one, the bevel gear one is meshed with the bevel gear two, the input end of the motor two is electrically connected with the output end of the controller to drive the worm gears to rotate, and the torques at the two sides of the worm gears are similar.

[0011] Further, the steering mechanism comprises gear one, motor one, outer tooth ring and rotating table, the upper end of the stand is rotationally connected with the rotating table, the outer part of the upper end of the stand is fixedly sleeved with the outer tooth ring, the upper surface of the rotating table is fixedly connected with the motor one, the lower end of the output shaft of the motor one is fixedly sleeved with the gear one, the gear one is meshed with the outer tooth ring, the upper surface of the rotating table is fixedly connected with the support, and the input end of the motor one is electrically connected with the output end of the controller to realize steering.

[0012] Further, the driving mechanism comprises motor three, gear two and rack plate, the upper surface of the traveling car is fixedly connected with the motor three, the lower end of the output shaft of the motor three is fixedly sleeved with the gear two, the inner side of the support is fixedly connected with the rack plate, the gear two is meshed with the rack plate, and the input end of the motor three is electrically connected with the output end of the controller to drive the traveling car.

[0013] Further, the upper surface of the rotating table is fixedly connected with the supporting frame, the upper end of the supporting frame and the end, away from the stand, of the support are both fixedly connected with touch type limit switches, the front and back ends of the traveling car are both fixedly connected with touch plates, the touch type limit switches correspond to the front and back positions of the adjacent touch plates respectively, and the touch type limit switches are both bidirectionally electrically connected with the controller to avoid collision.

[0014] Compared with the prior art, the double-beam cantilever crane has the following advantages:

[0015] 1. The output shaft of the motor two rotates to drive the two worms to synchronously rotate, the vertically adjacent worm gears rotate to drive the four winding drums to synchronously rotate, and the articles to be hoisted are hoisted by the four winding drums, so that the stability is higher.

[0016] 2. The output shaft of the motor three drives the gear two to rotate, the gear two moves on the meshed rack plate to drive the traveling car to slide between the upper ends of the two guide rails, the traveling drive of the traveling car is separated from the wheels, and the wheels are no longer responsible for driving, so that the pressure on the wheels of the traveling car is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 It is the structure schematic view of the utility model;

[0018] Fig. 2 It is the structure schematic view of the utility model A place amplification section view;

[0019] Fig. 3 It is the structure schematic view of the utility model B place amplification section view.

[0020] In the drawing: 1 stand, 2 steering mechanism, 21 gear one, 22 motor one, 23 outer tooth ring, 24 rotary table, 3 support, 4 guide rail, 5 traveling car, 6 hoisting mechanism, 61 winding drum, 62 worm wheel, 63 worm, 64 drive box, 65 rotating shaft, 66 motor two, 67 helical gear one, 68 helical gear two, 7 drive mechanism, 71 motor three, 72 gear two, 73 rack plate, 8 support frame, 9 touch type limit switch, 10 touch plate, 11 control box, 12 controller. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] Please refer to Figs. 1-3 The embodiment provides a technical scheme: a double-beam cantilever crane, which comprises a stand 1 and a hoisting mechanism 6.

[0023] The stand 1 is provided with a steering mechanism 2 at the upper end, the upper end of the steering mechanism 2 is fixedly connected with a support 3, the upper end of the support 3 is fixedly connected with guide rails 4 on the left and right sides, a traveling car 5 is slidably connected between the upper ends of the two guide rails 4, the sliding connection mode of the traveling car 5 with the upper ends of the two guide rails 4 is the mode commonly used in the prior art, and the traveling car 5 is driven by a drive mechanism 7.

[0024] The steering mechanism 2 comprises a gear one 21, a motor one 22, an outer tooth ring 23 and a rotary table 24, the upper end of the stand 1 is rotatably connected with the rotary table 24, the outer part of the upper end of the stand 1 is fixedly sleeved with the outer tooth ring 23, the upper surface of the rotary table 24 is fixedly connected with the motor one 22, the lower end of the output shaft of the motor one 22 is fixedly sleeved with the gear one 21, the gear one 21 is meshingly connected with the outer tooth ring 23, the upper surface of the rotary table 24 is fixedly connected with the support 3, the input end of the motor one 22 is electrically connected with the output end of the controller 12, the output shaft of the motor one 22 drives the gear one 21 to rotate, the gear one 21 rotates around the meshed outer tooth ring 23, and the rotation of the rotary table 24 is realized.

[0025] The driving mechanism 7 comprises a motor three 71, a gear two 72 and a rack plate 73, the upper surface of the traveling car 5 is fixedly connected with the motor three 71, the lower end of the output shaft of the motor three 71 is fixedly sleeved with the gear two 72, the inner side of the support 3 is fixedly connected with the rack plate 73, the gear two 72 is meshingly connected with the rack plate 73, the input end of the motor three 71 is electrically connected with the output end of the controller 12, the upper surface of the rotating table 24 is fixedly connected with the support frame 8, the upper end of the support frame 8 and the end of the support 3 away from the column 1 are both fixedly connected with the touch type limit switch 9, the front and rear ends of the traveling car 5 are both fixedly connected with the touch plate 10, the touch type limit switch 9 corresponds to the front and rear positions of the adjacent touch plate 10 respectively, the touch type limit switch 9 is both bidirectionally electrically connected with the controller 12, the output shaft of the motor three 71 drives the gear two 72 to rotate, the gear two 72 moves on the meshing rack plate 73, drives the traveling car 5 to slide between the upper ends of the two guide rails 4, when the traveling car 5 moves to the two ends of the guide rail 4, the support frame 8 touches the corresponding touch type limit switch 9, the touch type limit switch 9 feeds back the position information of the traveling car 5 to the controller 12, the controller 12 controls the motor three 71 to be closed, the traveling car 5 no longer moves, and collision is avoided.

[0026] The lifting mechanism 6 comprises a winding drum 61 and a driving box 64, the upper surface of the traveling car 5 is provided with front and rear symmetrically distributed fixing seats, the right side of the upper surface of the traveling car 5 is provided with the driving box 64, the fixing seats and the driving box 64 are both rotationally connected with left and right symmetrically distributed winding drums 61 through rotating shafts, the lifting mechanism 6 further comprises a worm wheel 62, a worm 63 and a rotating shaft 65, the right end of the rotating shaft is fixedly sleeved with the worm wheel 62, the rotating shaft 65 is rotationally connected between the inner walls of the front and rear sides of the driving box 64, the front and rear ends of the rotating shaft 65 are both provided with the worm 63, the worm 63 is meshingly connected with the vertically adjacent worm wheel 62 respectively, the lifting mechanism 6 further comprises a motor two 66, a bevel gear one 67 and a bevel gear two 68, the middle part of the rotating shaft 65 is fixedly sleeved with the bevel gear two 68, the upper surface of the traveling car 5 is fixedly connected with the motor two 66, the output shaft of the motor two 66 is fixedly sleeved with the bevel gear one 67, the bevel gear one 67 is meshingly connected with the bevel gear two 68, the input end of the motor two 66 is electrically connected with the output end of the controller 12, the output shaft of the motor two 66 drives the bevel gear one 67 to rotate, the bevel gear one 67 drives the meshing bevel gear two 68 to rotate, the bevel gear two 68 is located in the middle part of the rotating shaft 65, so that the torques of the two worms 63 are similar, the rotating shaft 65 rotates, the two worms 63 rotate synchronously, drive the vertically adjacent worm wheels 62 to rotate, drive the four winding drums 61 to rotate synchronously, the articles to be lifted are lifted through the four winding drums 61, and the stability is higher.

[0027] The control box 11 is arranged on the right side of the column 1, the front side of the control box 11 is provided with the controller 12, and the input end of the controller 12 is electrically connected with an external power supply.

[0028] The working principle of the double-beam cantilever crane is as follows: the controller 12 controls the operation of each electric appliance, the output shaft of the motor one 22 drives the gear one 21 to rotate, the gear one 21 rotates around the meshed outer tooth ring 23, the rotation of the turntable 24 is realized, the output shaft of the motor three 71 drives the gear two 72 to rotate, the gear two 72 moves on the meshed rack plate 73, drives the traveling car 5 to slide between the upper ends of the two guide rails 4, when the traveling car 5 moves to the two ends of the guide rail 4, the supporting frame 8 touches the corresponding touch type limit switch 9, the touch type limit switch 9 feeds back the position information of the traveling car 5 to the controller 12, the controller 12 controls the motor three 71 to be closed, the traveling car 5 does not move any more, collision is avoided, the output shaft of the motor two 66 drives the bevel gear one 67 to rotate, the bevel gear one 67 drives the meshed bevel gear two 68 to rotate, the bevel gear two 68 is located in the middle part of the rotating shaft 65, so that the torques of the two worms 63 are similar, the rotating shaft 65 rotates, the two worms 63 rotate synchronously, drive the vertically adjacent worm gears 62 to rotate, drive the four winding drums 61 to rotate synchronously, the articles to be hoisted are hoisted by the four winding drums 61, and the stability is higher.

[0029] It is worth noting that the controller 12 disclosed in the above embodiment can be selected as a GCAN-PLC-326-EPLC controller, the motor one 22 and the motor three 71 can be selected as GV series speed reducer motors, the motor two 66 can be selected as a TCH speed reducer motor, and the touch type limit switch 9 can be selected as a YBLX-ME / 8108 limit switch; the controller 12 controls the motor one 22, the motor two 66, the motor three 71 and the touch type limit switch 9 to work, which all adopt the method commonly used in the prior art.

[0030] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion according to the contents of the utility model specification and the drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. A double-girder cantilever crane, characterized in that: Includes a column (1) and a hoisting mechanism (6); Column (1): A steering mechanism (2) is provided at its upper end. A bracket (3) is fixedly connected to the upper end of the steering mechanism (2). Guide rails (4) are fixedly connected to the left and right sides of the upper end of the bracket (3). A traveling vehicle (5) is slidably connected between the upper ends of the two guide rails (4). The traveling vehicle (5) is driven by a drive mechanism (7). Lifting mechanism (6): It includes a drum (61) and a drive box (64). The left side of the upper surface of the traveling vehicle (5) is provided with a fixed seat that is symmetrically distributed front and back, and the right side of the upper surface of the traveling vehicle (5) is provided with a drive box (64). The fixed seat and the drive box (64) are rotatably connected by a drum (61) that is symmetrically distributed left and right through a rotating shaft.

2. A double-girder cantilever crane according to claim 1, characterized in that: It also includes a control box (11), which is located on the right side of the column (1). A controller (12) is provided on the front side of the control box (11), and the input end of the controller (12) is electrically connected to an external power source.

3. A double-girder cantilever crane according to claim 2, characterized in that: The hoisting mechanism (6) also includes a worm gear (62), a worm (63) and a rotating shaft (65). The right end of the rotating shaft is fixedly fitted with a worm gear (62). The rotating shaft (65) is rotatably connected between the inner walls of the front and rear sides of the drive box (64). The front and rear ends of the rotating shaft (65) are provided with worms (63), and the worms (63) are respectively meshed with the vertically adjacent worm gears (62).

4. A double-girder cantilever crane according to claim 3, characterized in that: The hoisting mechanism (6) also includes a second motor (66), a first helical gear (67) and a second helical gear (68). The second helical gear (68) is fixedly sleeved in the middle of the rotating shaft (65). The second motor (66) is fixedly connected to the upper surface of the traveling vehicle (5). The first helical gear (67) is fixedly sleeved on the output shaft of the second motor (66). The first helical gear (67) meshes with the second helical gear (68). The input end of the second motor (66) is electrically connected to the output end of the controller (12).

5. A double-girder cantilever crane according to claim 2, characterized in that: The steering mechanism (2) includes a gear (21), a motor (22), an external gear ring (23), and a turntable (24). The upper end of the column (1) is rotatably connected to the turntable (24). The upper end of the column (1) is fixedly fitted with an external gear ring (23). The upper surface of the turntable (24) is fixedly connected to the motor (22). The lower end of the output shaft of the motor (22) is fixedly fitted with a gear (21). The gear (21) meshes with the external gear ring (23). The upper surface of the turntable (24) is fixedly connected to a bracket (3). The input end of the motor (22) is electrically connected to the output end of the controller (12).

6. A double-girder cantilever crane according to claim 2, characterized in that: The drive mechanism (7) includes a motor (71), a gear (72) and a rack (73). The upper surface of the traveling vehicle (5) is fixedly connected to the motor (71). The lower end of the output shaft of the motor (71) is fixedly fitted with the gear (72). The inner side of the bracket (3) is fixedly connected to the rack (73). The gear (72) meshes with the rack (73). The input end of the motor (71) is electrically connected to the output end of the controller (12).

7. A double-girder cantilever crane according to claim 5, characterized in that: The upper surface of the turntable (24) is fixedly connected to a support frame (8). The upper end of the support frame (8) and the end of the bracket (3) away from the column (1) are both fixedly connected to touch-type limit switches (9). The front and rear ends of the traveling vehicle (5) are both fixedly connected to touch plates (10). The touch-type limit switches (9) correspond to the front and rear positions of the adjacent touch plates (10) respectively. The touch-type limit switches (9) are all bidirectionally electrically connected to the controller (12).

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