A rope arrangement for a bridge crane

Abstract

This utility model relates to a rope-laying mechanism for a bridge crane, belonging to the technical field of bridge crane equipment in the metallurgical industry. The technical solution is as follows: two support plates (2) are vertically fixed on the base frame (1), a load-bearing plate (3) is fixed on the two support plates (2), the two ends of the take-up roller (4) are rotatably connected to the two support plates (2), a servo motor (8) is driven and connected to the take-up roller (4), and a limiting plate (5) is sleeved on both sides of the take-up roller (4), one of the limiting plates (5) has an external toothed ring (6) on its outer side; two fixing plates (91) are fixed on the load-bearing plate (3), the two ends of the lead screw (92) are rotatably connected to the fixing plate (91), and the movable seat (94) is threadedly connected to the lead screw (92). The beneficial effects of this utility model are: it can avoid large bending of the bridge crane cable during the rope laying process, reduce the friction between the cable and the rope laying mechanism, and extend the service life of the rope laying mechanism.

Description

Technical Field

[0001] This utility model relates to a rope-laying mechanism for a bridge crane, belonging to the technical field of bridge crane equipment in the metallurgical industry. Background Technology

[0002] A bridge crane is a commonly used lifting device for handling and lifting goods in industrial and construction fields. It consists of a bridge, rails spanning two supporting structures, a hoisting mechanism, a traveling mechanism, and a rope-laying mechanism.

[0003] The existing rope-laying mechanism has a complex structure, and its internal take-up roller and lay-up roller are each driven by a separate motor. When the take-up roller rotates and winds up the wire driven by the motor, the motor at the end of the lay-up roller needs to be started to pull the cable to lay it left and right. The two sets of motors need to run simultaneously, which increases the operating cost of the rope-laying mechanism. In addition, the cable of the bridge crane is prone to large bends during the rope-laying process, which increases the friction between the cable and the rope-laying mechanism and affects the service life of the rope-laying mechanism.

[0004] In summary, the present invention provides a rope-laying mechanism for a bridge crane to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a rope-laying mechanism for a bridge crane, which can avoid large bending of the bridge crane cable during the rope-laying process, reduce friction between the cable and the rope-laying mechanism, extend the service life of the rope-laying mechanism, and solve the problems existing in the background art.

[0006] The technical solution of this utility model is:

[0007] A rope-laying mechanism for a bridge crane includes a base frame, support plates, load-bearing plates, take-up rollers, limiting plates, external gear rings, a servo motor, and a transmission rope-laying assembly. Two support plates are vertically fixed to the base frame, and the load-bearing plate is fixed to the two support plates. The two ends of the take-up roller are rotatably connected to the two support plates. The servo motor is driven by the take-up roller. Limiting plates are fitted on both sides of the take-up roller, and an external gear ring is provided on the outer side of one of the limiting plates. The transmission rope-laying assembly includes a fixed plate, a lead screw, a movable seat, a transmission wheel, and a rope-laying ring. Two fixed plates are fixed to the load-bearing plates, and the two ends of the lead screw are rotatably connected to the fixed plates. The movable seat is threaded onto the lead screw, and rope-laying rings are fixedly connected to the top and bottom of the movable seat. A transmission wheel is provided on the lead screw, and the transmission wheel meshes with the external gear ring.

[0008] The rope loops on the top and bottom of the movable seat have a mirror-symmetrical structure.

[0009] A limiting rod that cooperates with the movable seat is provided between the two fixed plates.

[0010] The transmission wheel is fixed on the lead screw.

[0011] The diameter of the limiting plates on both sides of the take-up roller is larger than the diameter of the take-up roller.

[0012] The servo motor is installed inside the chassis, which is fixed to the support plate.

[0013] The beneficial effects of this utility model are:

[0014] (1) During the winding and unwinding process, the take-up roller is driven by a servo motor, which can simultaneously drive the rope-laying ring to perform translational rope-laying work, effectively reducing the operating cost of the rope-laying mechanism of the bridge crane;

[0015] (2) The two rope-laying rings are installed in a mirror-symmetrical structure. When the overall installation height of the rope-laying mechanism is higher than the height of the top hoisting cable of the bridge crane, the cable can pass through the rope-laying ring at the bottom of the movable seat for rope-laying and winding. Conversely, the cable can pass through the rope-laying ring at the top of the movable seat for rope-laying and winding. This can avoid large bending of the bridge crane cable during rope-laying, reduce friction between the cable and the rope-laying mechanism, reduce the resistance of the motor inside the rope-laying mechanism, and extend the service life of the rope-laying mechanism. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present utility model;

[0017] Figure 2 This is the front view of the present utility model;

[0018] Figure 3 This is a schematic main sectional view of the transmission rope assembly of this utility model;

[0019] Figure 4 This is a schematic main sectional view of the structure of the take-up roller of this utility model;

[0020] Figure 5 This is a schematic side sectional view of the transmission rope assembly of this utility model;

[0021] Figure 6 This is a schematic side view of the external gear ring of this utility model;

[0022] In the diagram: 1. Base frame; 2. Support plate; 3. Load-bearing plate; 4. Take-up roller; 5. Limiting plate; 6. External gear ring; 7. Chassis; 8. Servo motor; 9. Transmission rope assembly;

[0023] 91. Fixed plate; 92. Lead screw; 93. Limiting rod; 94. Movable seat; 95. Transmission wheel; 96. Rope loop. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and examples.

[0025] See attached document Figure 1-6 A rope-laying mechanism for a bridge crane includes a base frame 1, support plates 2, load-bearing plates 3, a take-up roller 4, limiting plates 5, an external gear ring 6, a servo motor 8, and a transmission rope-laying assembly 9. Two support plates 2 are vertically fixed to the base frame 1, and the load-bearing plate 3 is fixed to the two support plates 2. The take-up roller 4 is rotatably connected to the two support plates 2 at both ends. The servo motor 8 is driven by the take-up roller 4. Limiting plates 5 are fitted on both sides of the take-up roller 4, one of which... An external gear ring 6 is provided on the outer side; the transmission rope arrangement assembly 9 includes a fixed plate 91, a lead screw 92, a movable seat 94, a transmission wheel 95, and a rope arrangement ring 95. The two fixed plates 91 are respectively fixed on the load-bearing plate 3. The two ends of the lead screw 92 are respectively rotatably connected to the fixed plate 91. The movable seat 94 is threadedly connected to the lead screw 92. Rope arrangement rings 96 are fixedly connected to the top and bottom of the movable seat 94. The lead screw 92 is provided with a transmission wheel 95, which meshes with the external gear ring 6.

[0026] In this embodiment, refer to the appendix Figure 1-6 Support plates 2 are fixedly connected to both sides of the top of the base frame 1. A load-bearing plate 3 is fixedly connected between the tops of the two support plates 2. A take-up roller 4 is rotatably connected between opposite sides of the two support plates 2. Limiting plates 5 are fitted on both sides of the roller surface of the take-up roller 4. A housing 7 is fixedly connected to one side of one support plate 2. A servo motor 8 is fixedly connected inside the housing 7. The servo motor 8 is connected to an external power supply and is equipped with a power control switch. The servo motor 8 is a three-phase asynchronous motor, and its output end can be adjusted for forward and reverse rotation. The take-up roller 4... One end of the servo motor 8 passes through a support plate 2 and a housing 7 and extends into the interior of the housing 7. The output end of the servo motor 8 is fixedly connected to one end of the take-up roller 4. An external gear ring 6 is fixedly connected to one side of a limiting plate 5. A transmission rope assembly 9 is fixedly connected between the opposite sides of the two support plates 2 and the bottom of the load-bearing plate 3 and on the front of the external gear ring 6. The take-up roller 4 is rotatably connected to the housing 7. The take-up roller 4 is fixedly connected to the two limiting plates 5. The two limiting plates 5 have a limiting effect on the cable wound on the roller surface of the take-up roller 4.

[0027] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6The transmission rope-laying assembly 9 includes a fixed plate 91, a lead screw 92, a limiting rod 93, a movable seat 94, a transmission wheel 95, and a rope-laying ring 95. The two fixed plates 91 are respectively fixedly connected to the two sides of the bottom of the load-bearing plate 3. The limiting rod 93 is fixedly connected between the bottom of the opposite side of the two fixed plates 91. The movable seat 94 is sleeved on the rod surface of the limiting rod 93. The lead screw 92 is installed on one side of a support plate 2 and is located directly below the limiting rod 93. One end of the lead screw 92 passes through the movable seat 94 and extends to one side of the other support plate 2. The transmission wheel 95 is sleeved on the rod surface of the lead screw 92 and is located on the front of the outer gear ring 6. Rope-laying rings 96 are fixedly connected to the top and bottom of the movable seat 94. The diameter of the take-up roller 4 located between the two limiting plates 5 is smaller than the diameter of the limiting plate 5 and larger than the diameter of the transmission wheel 95, so that the take-up roller 4 can perform take-up work on a longer length of crane lifting rope during the take-up and laying process.

[0028] Please see Figure 2 , Figure 3 , Figure 5 and Figure 6 The limiting rod 93 contacts the movable seat 94, and the limiting rod 93 has a limiting function on the movable seat 94. When the lead screw 92 rotates clockwise, it can drive the movable seat 94 to slide from right to left on the limiting rod 93 and the lead screw 92. When the lead screw 92 rotates counterclockwise, it can drive the movable seat 94 to slide from left to right on the limiting rod 93 and the lead screw 92. The initial position of the movable seat 94 is located between the right side of the limiting rod 93 and the lead screw 92. The lead screw 92 and the movable seat 94 are threadedly connected. The lead screw 92 is rotatably connected to the two support plates 2. Wheel 95 meshes with external gear ring 6, transmission wheel 95 is fixedly connected to lead screw 92, and two rope-laying rings 96 are installed in a mirror-symmetrical structure. When the overall installation height of the rope-laying mechanism is higher than the height of the top hoisting cable of the bridge crane, the cable can pass through the rope-laying ring 96 at the bottom of the movable seat 94 for rope-laying and winding. Conversely, the cable can pass through the rope-laying ring 96 at the top of the movable seat 94 for rope-laying and winding. This can avoid large bending of the bridge crane cable during rope-laying and reduce friction between the cable and the rope-laying mechanism.

[0029] The specific implementation process is as follows:

[0030] The rope on the bridge crane is threaded through the rope-laying ring 96 on the transmission rope-laying assembly 9. When the rope needs to be taken up, the counterclockwise rotation switch at the output end of the servo motor 8 can be activated, which drives the take-up roller 4, the two limit plates 5, and the external gear ring 6 to rotate counterclockwise. At the same time, the external gear ring 6 drives the transmission wheel 95 inside the transmission rope-laying assembly 9 to rotate clockwise. The transmission wheel 95 drives the lead screw 92 to rotate clockwise, which drives the movable seat 94 to slide from right to left on the limit rod 93 and the lead screw 92. The movable seat 94 drives the rope-laying ring 96 to slide horizontally from right to left. The movement of the servo motor 8 drives the take-up roller 4 to evenly distribute the crane cable wound on the surface of the take-up roller 4 during the take-up process, while the movable seat 94 and the rope-laying ring 96 also drive the take-up roller 4 to evenly distribute the cable. The wound cables are not squeezed together vertically, which effectively protects the crane cable and extends its service life. The diameter of the take-up roller 4 located between the two limit plates 5 is smaller than the diameter of the limit plates 5 but larger than the diameter of the drive wheel 95, which allows the take-up roller 4 to perform take-up work on a longer length of crane cable during the take-up process.

[0031] When the output of the servo motor 8 rotates clockwise, it drives the take-up roller 4, the two limit plates 5, and the external gear ring 6 to rotate clockwise, which in turn drives the transmission wheel 95 to rotate counterclockwise. This, in turn, drives the lead screw 92 to rotate counterclockwise, causing the movable seat 94 to slide from left to right on the limit rod 93 and the lead screw 92. This allows the take-up roller 4 to release the wire while simultaneously moving and resetting the rope-laying ring 96. By driving the take-up roller 4 with a single motor during the winding and unwinding process, the rope-laying ring 96 can be simultaneously moved to perform rope-laying operations, effectively reducing the operating cost of the rope-laying mechanism of the bridge crane.

[0032] The two rope-laying rings 96 are installed in a mirror-symmetrical structure. When the overall installation height of the rope-laying mechanism is higher than the height of the top hoisting cable of the bridge crane, the cable can pass through the rope-laying ring 96 at the bottom of the movable seat 94 for rope laying and winding. Conversely, the cable can pass through the rope-laying ring 96 at the top of the movable seat 94 for rope laying and winding. This avoids large bending of the bridge crane cable during rope laying, reduces friction between the cable and the rope-laying mechanism, reduces the resistance of the motor inside the rope-laying mechanism, and extends the service life of the rope-laying mechanism.

Claims

1. A rope arrangement mechanism of an overhead travelling crane, characterized by: The system includes a base frame (1), support plates (2), load-bearing plates (3), take-up rollers (4), limiting plates (5), external gear rings (6), servo motors (8), and a transmission rope-laying assembly (9). The two support plates (2) are vertically fixed on the base frame (1), and the load-bearing plates (3) are fixed on the two support plates (2). The two ends of the take-up rollers (4) are rotatably connected to the two support plates (2). The servo motors (8) are driven by the take-up rollers (4). Limiting plates (5) are fitted on both sides of the take-up rollers (4), and an external gear ring is provided on the outer side of one of the limiting plates (5). (6); The transmission rope assembly (9) includes a fixed plate (91), a lead screw (92), a movable seat (94), a transmission wheel (95) and a rope ring (95). The two fixed plates (91) are fixed on the load-bearing plate (3) respectively. The two ends of the lead screw (92) are rotatably connected to the fixed plate (91) respectively. The movable seat (94) is threadedly connected to the lead screw (92). The top and bottom of the movable seat (94) are fixedly connected to the rope ring (96). The lead screw (92) is provided with a transmission wheel (95), which meshes with the external gear ring (6).

2. The rope-laying mechanism of a bridge crane according to claim 1, characterized in that: The rope loops (96) on the top and bottom of the movable seat (94) have a mirror-symmetrical structure.

3. The rope-laying mechanism of a bridge crane according to claim 1, characterized in that: A limiting rod (93) that cooperates with the movable seat (94) is provided between the two fixed plates (91).

4. The rope-laying mechanism of a bridge crane according to claim 1, characterized in that: The transmission wheel (95) is fixed on the lead screw (92).

5. The rope-laying mechanism of a bridge crane according to claim 1, characterized in that: The diameter of the limiting plates (5) on both sides of the take-up roller (4) is greater than the diameter of the take-up roller (4).

6. The rope-laying mechanism of a bridge crane according to claim 1, characterized in that: The servo motor (8) is installed inside the chassis (7), which is fixed on the support plate (2).

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