Double-hook synchronous control 10t gantry crane

Abstract

This utility model discloses a 10T gantry crane with synchronous control of dual hooks, including a main beam, outriggers, ground beam, ground anchor support, motor lifting system, traveling drive system, and handheld controller. The motor lifting system includes a lifting motor mounted on the main beam, with drive shafts at both ends of the motor. Each drive shaft is connected to a lifting reducer, and the output ends of both reducers are connected to drums. One end of a wire rope is connected to the drum, and the other end of the wire rope is connected to a double hook head. A pulley hook is installed on the wire rope. This utility model solves the problems of load tilting, wire rope wear, and low efficiency caused by asynchronous operation in traditional dual-hook cranes, thereby significantly improving operational safety and precision, and effectively increasing work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of lifting machinery technology, specifically a 10T gantry crane with dual-hook synchronous control. Background Technology

[0002] Traditional gantry cranes mostly use a single hook design, but certain working conditions (such as lifting long components and balanced handling) require the coordinated operation of two hooks. Existing double-hook cranes often use independent motors to drive two drums, but due to differences in motor performance and transmission chain errors, the two hooks are prone to asynchrony, causing problems such as load tilting and accelerated wear of wire ropes. In addition, some solutions use a mechanical linkage shaft to drive the two drums, but the rigid shaft is susceptible to torsional deformation and is difficult to adapt to long distances or dynamic load changes.

[0003] In addition, existing cranes rely on high-cost servo systems and have high maintenance requirements; and they use hydraulic synchronous motors to drive the simultaneous lifting and lowering of the two hooks, but the hydraulic system has defects such as low efficiency and slow response.

[0004] Therefore, there is an urgent need for a dual-hook drive solution that is simple in structure, cost-controllable, and has high synchronization accuracy. Utility Model Content

[0005] The purpose of this utility model is to provide a 10T gantry crane with dual-hook synchronous control to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a T-type gantry crane with dual-hook synchronous control, comprising a main beam, outriggers, ground beam, ground anchor support, motor lifting system, traveling drive system, and handheld controller; the motor lifting system includes a lifting motor mounted on the main beam, with drive shafts at both ends of the lifting motor, and lifting reducers connected to the drive shafts. The output ends of the two lifting reducers are connected to drums, with one end of a wire rope connected to the drum, and the other end of the wire rope connected to a double hook head, with pulley hooks provided on the wire rope.

[0007] Preferably, there are four support legs, which are connected to the main beam via flanges and bolts and nuts. An electrical control box is installed on one side of each support leg.

[0008] Preferably, the ground beam is installed at the bottom of the four legs, and the ground beam is connected to the four legs by flanges through bolts and nuts.

[0009] Preferably, the hoisting motor is connected to two drive shafts via coupling one and coupling two, and the drive shafts are connected to the hoisting reducer via coupling three.

[0010] Preferably, the ground beam consists of an active wheel train mechanism, a driven wheel train mechanism, and a walking drive system. The walking drive system includes walking motors installed on both sides of the ground beam, and the output ends of the two walking motors are respectively connected to the active wheel train mechanism and the driven wheel train mechanism.

[0011] Preferably, rail clamps are installed on both sides of the ground beam.

[0012] Preferably, the hoisting motor is a three-phase asynchronous motor, and the drive shafts at both ends of the hoisting motor are rigidly connected to the hoisting reducer via splines or flanges.

[0013] Preferably, the ground anchor supports are installed on both sides of the ground beam, and ground anchor pins are installed on the ground anchor supports.

[0014] Preferably, one end of the wire rope is fixed to the main beam lifting lug by a shackle and a load sensor is installed thereon, and the other end is fixed to the drum, on which a rope arranger is installed.

[0015] Preferably, end limiting blocks are installed on both sides of the ground beam, and polyurethane buffer blocks are provided between the end limiting blocks and the ground beam. Two lifting limit rods are installed at the bottom of the main beam.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By using a single lifting motor, power is distributed to the reducers and drum system on both sides via a drive shaft. The single motor drive reduces the complexity of electrical control, and the mechanical transmission system has strong anti-interference capabilities, low failure rate, and low maintenance costs.

[0018] The mechanical hard connection design forces synchronization, with minimal deviation in the lifting speed of the two hooks. The drive shaft and reducer symmetrically distribute torque, and the load of the two hooks is evenly distributed on both sides of the main beam, avoiding fatigue of the metal structure caused by excessive force on one side. Synchronous operation prevents the cargo from tilting or shaking, reducing the risk of accidental unhooking.

[0019] Rope straighteners extend the life of wire ropes and prevent rope breakage accidents caused by tangled ropes.

[0020] Simultaneous operation of dual hooks can improve hoisting efficiency, especially suitable for tasks that require multi-point fixing or large-span hoisting (such as the installation of prefabricated components). Mechanical synchronization is not affected by electromagnetic interference or signal delay, and it is suitable for harsh working environments such as high dust and high humidity, thereby improving work efficiency. Attached Figure Description

[0021] Figure 1 This is a front structural schematic diagram of a 10T gantry crane with dual-hook synchronous control provided by this utility model.

[0022] Figure 2This is a side view of the 10T gantry crane with dual-hook synchronous control provided by this utility model.

[0023] Figure 3 This is a top view of the 10T gantry crane with dual-hook synchronous control provided by this utility model.

[0024] Figure 4 This is a schematic diagram of the pulley structure in this utility model;

[0025] Figure 5 This is a schematic diagram of the drum structure in this utility model;

[0026] Figure 6 This is a schematic diagram of the hook head rising to its highest point in this utility model;

[0027] Figure 7 This is a schematic diagram of the support leg structure of this utility model;

[0028] Figure 8 This is a schematic diagram of the ground beam structure of this utility model;

[0029] Figure 9 This is a schematic diagram of the walking system structure of this utility model.

[0030] In the diagram: 1. Main beam; 2. Drive shaft; 3. Outrigger; 4. Ground beam; 5. Main wheel train mechanism; 6. Driven wheel train mechanism; 7. Rail clamp; 8. Ground anchor support; 9. Ground anchor pin; 10. End limit block; 11. Hoisting motor; 12. Hoisting reducer; 13. Travel motor; 14. Lifting upper limit bar; 15. Load sensor; 16. Handheld controller; 17. Drum; 18. Pulley hook; 19. Polyurethane buffer block; 20. 2160-10mm steel wire rope; 21. Electrical control box; 22. Coupling 1; 23. Coupling 3; 24. Coupling 2; 25. Shackle. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see Figure 1-9This utility model provides a technical solution: a 10T gantry crane with dual-hook synchronous control, including a main beam 1, outriggers 3, ground beam 4, ground anchor support 8, motor lifting system, traveling drive system, and handheld controller 16; the motor lifting system includes a lifting motor 11 mounted on the main beam 1, with drive shafts 2 at both ends of the lifting motor 11, and lifting reducers 12 connected to the drive shafts 2. The output ends of both lifting reducers 12 are connected to drums 17, with one end of a wire rope 20 connected to the drum 17, and the other end of the wire rope 20 connected to a double hook head. The output shafts of the lifting reducers drive the drums on both sides to rotate, and the wire rope winds in a preset direction (clockwise / counterclockwise) or... Release, the wire rope 20 is equipped with a pulley hook 18, one end of the wire rope 20 is fixed to the main beam 1 lifting lug by a shackle 25 and a load sensor 15 is installed, the other end is fixed to the drum 17, the drum 17 is equipped with a rope arranger, the rope arranger extends the life of the wire rope and avoids rope breakage accidents caused by tangled ropes, the load sensor 15 monitors the initial load of the double hook head 19 in real time and feeds the data back to the control system to ensure that the load on both sides is balanced (if the hoisting motor 11 is powered on, the control system detects the rotation phase of the two drive shafts 2 through the encoder to ensure that the rigid coupling and the connected left and right hoisting reducers 12 are in the same initial position, if the load difference exceeds the limit, an alarm is triggered and the start is suspended). Hoisting motor 11 Upon receiving a control command, the system starts, and the output torque is synchronously transmitted to both sides via the intermediate drive shaft 2. Because the drive shafts are connected by a rigid coupling, the input speeds of the left and right lifting reducers 12 are completely consistent. The lifting reducers 12 on both sides convert the high-speed rotation of the motor into a low-speed, high-torque output, driving the drum 17 to rotate synchronously. Since the lifting reducers are of the same model and their transmission ratios are strictly matched, the angular velocities of the drums on both sides remain consistent. When the drum 17 rotates, the wire rope 20 is guided by the rope arranger and arranged tightly layer by layer along the drum axis (the rope diameter spacing is controlled by the moving speed of the rope arranger), synchronously winding around the drum. The winding action of the wire rope 20 is transmitted to the double hook head via a pulley system. Under rigid transmission and synchronous control, the double hook head... Ascending vertically at the same rate, load sensor 15 continuously monitors the tension of the wire ropes on both sides. If tension differences occur due to uneven loading of goods (e.g., 60% load on the left hook and 40% load on the right hook), the control system dynamically adjusts the motor output torque distribution to prevent unilateral overload. The moving speed of the rope arranger matches the drum speed in real time to ensure that the wire ropes are tightly arranged and to avoid hook head movement deviation due to tangled ropes. During the synchronous descent of the two hook heads, the lifting motor 11 switches to reverse mode, and the transmission shaft 2 drives the lifting reducer 12 to rotate in the opposite direction to the drum 17, releasing the wire rope 20. Under the guidance of the rope arranger, the wire rope 20 is released orderly from the drum 17. The two hook heads descend at a uniform speed under the balance of gravity and motor torque to ensure synchronous descent of the two hooks.

[0033] In this utility model, there are four support legs 3. The support legs 3 are connected to the main beam 1 by flanges and bolts and nuts. An electrical control box 21 is installed on one side of the support leg 3.

[0034] In this utility model, the ground beam 4 is installed at the bottom of the four support legs 3, and the ground beam 4 and the four support legs 3 are connected by flanges through bolts and nuts.

[0035] In this utility model, the hoisting motor 11 is connected to two transmission shafts 2 through coupling 1 22 and coupling 24 respectively, and the transmission shafts 2 are connected to the hoisting reducer 12 through coupling 3 23.

[0036] In this utility model, the ground beam 4 is composed of an active wheel train mechanism 5, a driven wheel train mechanism 6, and a walking drive system. The walking drive system includes walking motors 13 installed on both sides of the ground beam 4, and the output ends of the two walking motors 13 are respectively connected to the active wheel train mechanism 5 and the driven wheel train mechanism 6.

[0037] In this utility model, rail clamps 7 are installed on both sides of the ground beam 4.

[0038] In this utility model, the hoisting motor 11 is a three-phase asynchronous motor, and the transmission shafts 2 at both ends of the hoisting motor 11 are rigidly connected to the hoisting reducer 12 through splines or flanges.

[0039] In this utility model, the ground anchor support 8 is installed on both sides of the ground beam 4, and the ground anchor support 8 is equipped with ground anchor pins 9.

[0040] In this utility model, end limiting blocks 10 are installed on both sides of the ground beam 4, and a polyurethane buffer block 19 is provided between the end limiting block 10 and the ground beam 4. Two lifting limit rods 14 are installed at the bottom of the main beam 1.

[0041] Furthermore, the hoisting motor starts according to the command direction (forward / reverse), drives the transmission shafts on both sides through the coupling, and the transmission shafts are rigidly distributed to the reducers on both sides, driving them to run synchronously. The output shaft of the hoisting reducer drives the drums on both sides to rotate, and the wire rope is wound or released in a preset direction (clockwise / counterclockwise). The drum is driven by the rotation of the drum shaft (such as screw, chain or gear transmission), so that the rope guide moves synchronously with the rotation of the drum. The wire rope is wound up, and the two hooks rise synchronously through a pulley block. The drum releases the wire rope, and the two hooks descend synchronously under gravity or reverse braking control of the motor. The guide wheel or spiral groove of the rope arranger moves laterally with the rotation of the drum to ensure that the wire rope is tightly arranged layer by layer on the drum. If the wire rope deviates from the preset position, the limit switch of the rope arranger triggers an alarm, forcibly stopping the operation to avoid uneven force caused by tangled rope. The two hooks rise vertically at the same speed under the traction of the wire rope, keeping the goods horizontal. The two hooks descend synchronously under the reverse drive of the motor or the action of gravity. The brake (such as a disc brake) controls the descent speed in real time to prevent stalling. The two hooks are kept in a suspended state by the brake until the next operation command is input.

[0042] This utility model addresses the problems of insufficient synchronization accuracy and system complexity in existing double-hook cranes by proposing a synchronization control scheme based on single-motor dual-shaft drive and closed-loop feedback. This is achieved through the following technical means: Regarding motor drive and power distribution: a single hoisting motor is used, and power is distributed to the reducers and drum system on both sides via a drive shaft. The torque output by the motor is evenly distributed to both sides through a rigid drive shaft (such as a universal coupling or gear coupling), ensuring the symmetry of power transmission on both sides. Regarding mechanical synchronization design: the drive shaft is rigidly connected: the drive shafts at both ends are rigidly connected to the reducers (such as gears or couplings), forcing the drums on both sides to rotate at the same speed through a mechanical structure, eliminating speed deviations caused by load differences. Symmetrical reducer configuration: The transmission ratios of the reducers on both sides are exactly the same, ensuring that the linear speed of the two drums is completely synchronized after the motor output speed is reduced; Drum linkage design: The double hook wire ropes are wound on the same drum or symmetrically distributed drums, and the synchronous lifting and lowering of the double hooks is achieved through the synchronous rotation of the drums; Rope arranger function: The rope arranger ensures that the wire ropes are evenly arranged on the drums through rope guiding devices (such as rope guide wheels or spiral grooves), avoiding uneven force or synchronization deviation caused by tangled ropes; Closed-loop feedback control: The encoder monitors the hook position in real time, and combined with the tension sensor data, dynamically adjusts the motor speed.

[0043] The contents not described in detail in this specification are prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A double hook synchronous controlled 10T gantry crane, characterized in that: It includes a main beam (1), outriggers (3), ground beam (4), ground anchor support (8), motor lifting system, walking drive system and handheld controller (16); the motor lifting system includes a lifting motor (11) installed on the main beam (1), and a drive shaft (2) is provided at both ends of the lifting motor (11). The drive shaft (2) is connected to a lifting reducer (12). The output ends of the two lifting reducers (12) are connected to drums (17). One end of a wire rope (20) is connected to the drum (17). The other end of the wire rope (20) is connected to a double hook. A pulley hook (18) is provided on the wire rope (20).

2. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: There are four support legs (3). The support legs (3) are connected to the main beam (1) by bolts and nuts through flanges. An electrical control box (21) is installed on one side of the support leg (3).

3. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: The ground beam (4) is installed at the bottom of the four legs (3), and the ground beam (4) and the four legs (3) are connected by flanges through bolts and nuts.

4. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: The hoisting motor (11) is connected to two drive shafts (2) via coupling one (22) and coupling two (24), and the drive shafts (2) are connected to the hoisting reducer (12) via coupling three (23).

5. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: The ground beam (4) consists of an active wheel train mechanism (5), a driven wheel train mechanism (6), and a walking drive system. The walking drive system includes walking motors (13) installed on both sides of the ground beam (4). The output ends of the two walking motors (13) are connected to the active wheel train mechanism (5) and the driven wheel train mechanism (6), respectively.

6. A double hook synchronous controlled 10T gantry crane as claimed in claim 1, characterized in that: Rail clamps (7) are installed on both sides of the ground beam (4).

7. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: The hoisting motor (11) is a three-phase asynchronous motor, and the transmission shafts (2) at both ends of the hoisting motor (11) are rigidly connected to the hoisting reducer (12) through splines or flanges.

8. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: The ground anchor support (8) is installed on both sides of the ground beam (4), and the ground anchor support (8) is equipped with ground anchor pins (9).

9. A double hook synchronous control 10T gantry crane according to claim 1, characterized in that: One end of the wire rope (20) is fixed to the main beam (1) lug by a shackle (25) and a load sensor (15) is installed thereon. The other end is fixed to the drum (17), on which a rope arranger is installed.

10. A 10T gantry crane with dual-hook synchronous control according to claim 1, characterized in that: Both sides of the ground beam (4) are equipped with end limit blocks (10), and a polyurethane buffer block (19) is provided between the end limit block (10) and the ground beam (4). Two lifting limit rods (14) are installed at the bottom of the main beam (1).

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