Device for synchronizing cable drum and lifting appliance

Abstract

The utility model discloses a device for synchronizing a cable drum and a lifting appliance, which comprises a mounting rack, a cable drum, a steel wire rope drum and a driving mechanism, the driving mechanism is fixedly connected on the mounting rack, an output shaft of the driving mechanism is in transmission connection with one end of the steel wire rope drum, and the other end of the steel wire rope is rotationally connected with the mounting rack. The two ends of the cable drum are rotationally connected to the mounting frame, the cable drum and the steel wire rope drum are arranged in parallel, the cable drum is located on one side of the steel wire rope drum, and a shell of the steel wire rope drum is sleeved with a driving gear which is fixedly connected with the steel wire rope drum. A mounting support is further mounted on the mounting frame between the cable drum and the steel wire rope drum, an adjusting transmission assembly is mounted on the mounting support and is in transmission connection with the driving gear, and a driven gear in transmission connection with the adjusting transmission assembly is fixedly connected to the cable drum. An adjusting transmission assembly is arranged between the driving gear and the driven gear, so that synchronous transmission between the steel wire rope and the cable is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of hoist equipment, particularly to a device for synchronizing a cable drum and a lifting appliance. BACKGROUND

[0002] In the traditional trolley, a motor is generally used to drive a speed reducer, and the speed reducer drives a steel wire rope drum to rotate. The steel wire rope drum is connected to the lifting appliance through a steel wire rope. The power supply of the lifting appliance is realized through a cable wound on the cable drum. In general, the cable drum also needs to be driven by a motor to realize the winding and unwinding of the cable. The cable drum and the steel wire rope drum are usually driven by two motors, which makes it impossible to ensure the synchronization of the cable drum and the steel wire rope drum. In this case, if the winding speed of the steel wire rope is too fast, the lifting appliance will rise at a faster speed. If the winding and unwinding speed of the cable drum is too slow, it may cause the cable to be stretched too much or be forcibly dragged, resulting in uneven stress on the wires inside the cable, which may cause the cable core to break or the insulation layer to be damaged, thereby shortening the service life of the cable and increasing the maintenance cost of the cable. At the same time, it may also affect the stability of power transmission, and in severe cases, it may cause power interruption, affecting the normal operation of the lifting appliance, and even causing safety accidents. Therefore, the asynchronization of the cable drum and the steel wire rope drum may cause many problems. SUMMARY

[0003] The utility model provides a device for synchronizing a cable drum and a lifting appliance to solve the above problems.

[0004] In order to solve the above technical problems, the utility model adopts the following technical scheme: a device for synchronizing a cable drum and a lifting appliance, the device comprises a mounting frame, a cable drum, a steel wire rope drum and a driving mechanism, the driving mechanism is fixedly connected to the mounting frame, the output shaft of the driving mechanism is in transmission connection with one end of the steel wire rope drum, the other end of the steel wire rope is in rotation connection with the mounting frame, both ends of the cable drum are in rotation connection with the mounting frame, the cable drum and the steel wire rope drum are arranged in parallel and the cable drum is located on one side of the steel wire rope drum, a driving gear is installed on the steel wire rope drum, an installation support is further installed on the mounting frame between the cable drum and the steel wire rope drum, an adjusting transmission assembly is installed on the installation support, the adjusting transmission assembly is in transmission connection with the driving gear, a driven gear is installed on the cable drum and in transmission connection with the adjusting transmission assembly.

[0005] Preferably, the driving gear is sleeved on one end of the steel wire rope drum and fixedly connected with the steel wire rope drum; the driven gear is located on one end of the cable drum and in transmission connection with the cable drum.

[0006] Preferably, the adjusting transmission assembly comprises a mounting shaft, the mounting shaft is rotationally connected with the mounting bracket, a first transmission gear is fixedly connected on the mounting shaft, the first transmission gear is meshingly arranged with the driving gear, a second transmission gear is also fixedly connected on the mounting shaft, the second transmission gear is meshingly arranged with the driven gear.

[0007] Preferably, the adjusting transmission assembly comprises a mounting shaft, the mounting shaft is rotationally connected with the mounting bracket, a first transmission gear is fixedly connected on the mounting shaft, the first transmission gear is meshingly arranged with the driving gear, a second transmission gear is also fixedly connected on the mounting shaft, the second transmission gear is meshingly arranged with the driven gear.

[0008] Preferably, the first transmission gear and the second transmission gear are integrally arranged; the driving gear and the driven gear are the same in the number of teeth and the outer diameter.

[0009] Preferably, the mounting bracket comprises a horizontally arranged connecting plate, two spaced-apart supporting plates are fixedly connected on the top of the connecting plate, the two supporting plates are vertically arranged, mounting grooves are formed on the top of the supporting plates, the mounting shaft is located at the bottom of the mounting grooves, baffles are further arranged on the outer side walls of the supporting plates, a connecting shaft is fixedly connected on the end of the mounting shaft, the diameter of the connecting shaft is smaller than that of the mounting shaft, connecting holes are formed on the baffles and matched with the connecting shaft, the connecting shaft passes through the connecting holes and extends to the outside of the baffles, and the baffles are detachably fixedly connected with the supporting plates.

[0010] Preferably, threaded holes are formed on the baffles on both sides of the connecting shaft, mounting holes corresponding to the threaded holes are formed on the supporting plates, and bolts pass through the threaded holes, the mounting holes and are fixedly connected by nuts.

[0011] Preferably, the outer side walls of the supporting plates are further fixedly connected with vertically arranged reinforcing plates, and the reinforcing plates are fixedly connected on the top of the connecting plate.

[0012] Preferably, the first transmission gear, the second transmission gear, the driving gear and the driven gear are nylon gears, and the first transmission gear, the second transmission gear, the driving gear and the driven gear are the same in the module.

[0013] Preferably, the driving mechanism comprises a driving motor, a speed reducer is rotationally connected on the output shaft of the driving motor, the output shaft of the speed reducer is drivingly connected with the steel wire rope drum, the speed reducer is fixedly connected on the mounting bracket, the central axis of the driving motor along the length direction is parallel to the central axis of the steel wire rope along the length direction, the cable drum and the driving motor are located on the same side of the steel wire rope drum, and the cable drum is located on the mounting bracket on the side of the driving motor away from the speed reducer.

[0014] The utility model discloses a beneficial effect has as follows: (1) through setting up driving gear on the steel wire rope reel, and setting up driven gear on the cable reel, and setting up adjusting transmission assembly between driving gear and driven gear, the synchronous transmission between steel wire rope and cable is convenient for actualizing, (2) adjusting transmission assembly includes first transmission gear and second transmission gear, through the adjustment of the tooth number of both, it is convenient for according to the winding condition of steel wire rope to adjust the rotating speed of steel wire rope reel and cable reel, thereby make the synchronous transmission between steel wire rope and cable, improve the adaptability of the device, (3) the detachable fixed connection of mounting shaft and support plate in adjusting transmission assembly, it is convenient for according to the need to replace mounting shaft and first transmission gear and second transmission gear on the mounting shaft, improve the convenience of maintenance and adjustment, (4) first transmission gear, second transmission gear, driving gear and driven gear are nylon gear, and nylon gear has the characteristics of high transmission precision, small backlash, under the regulation of different load, different running speed and different temperature environment, nylon gear can keep good synchronous performance, can make the running speed of power cable and steel wire rope keep consistent, reduce the problem such as cable overstretching or steel wire rope relaxation because of inconsistency, thereby protect steel wire rope and power cable, prolong its service life, in addition, nylon gear has good self-lubricating, reduces the cumbersome work of frequently adding lubricant in the use process, reduces the maintenance workload, and compared with metal gear, the raw material cost and processing cost of nylon gear are relatively low, help to reduce the cost of the whole device. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the structural schematic diagram of the utility model's adjusting transmission assembly; Figure 1 It is the partial close -up of A place in the middle;

[0017] Figure 3 It is the structural schematic diagram of the utility model's adjusting transmission assembly Figure 1 .

[0018] Figure 4 It is the structural schematic diagram of the utility model's adjusting transmission assembly Figure 2 . DETAILED DESCRIPTION

[0019] The utility model will be further described below in connection with the drawings.

[0020] A kind of cable reel and hoist synchronous device, such as Figures 1-4As shown, the device comprises a mounting frame 1, a cable drum 2, a steel wire rope drum 3 and a driving mechanism, the cable drum 2 is arranged in parallel with the steel wire rope drum 3 and the cable drum 2 is located at one side of the steel wire rope drum 3, the driving mechanism is fixedly connected on the mounting frame 1, the output shaft of the driving mechanism is in transmission connection with one end of the steel wire rope drum 3, the other end of the steel wire rope is in rotation connection with the mounting frame 1, both ends of the cable drum 2 are in rotation connection with the mounting frame 1, the steel wire rope drum 3 is provided with a driving gear 4, the driving gear 4 can be located at the end of the steel wire rope drum 3 and in transmission connection with the steel wire rope drum 3, or the driving gear 4 can be sleeved on the shell at one end of the steel wire rope drum 3 and in fixed connection with the steel wire rope drum 3, the steel wire rope drum 3 rotates to drive the driving gear 4 to rotate, and the specific connection mode is not limited here. The mounting frame 1 between the cable drum 2 and the steel wire rope drum 3 is further provided with a mounting bracket 20, the mounting bracket 20 is provided with an adjusting transmission assembly, the adjusting transmission assembly is in transmission connection with the driving gear 4, and the cable drum 2 is provided with a driven gear 5 in transmission connection with the adjusting transmission assembly. In use, the driving mechanism is started, the steel wire rope drum 3 rotates under the driving of the driving mechanism, the steel wire rope drum 3 drives the driving gear 4 to rotate, the driving gear 4 drives the adjusting transmission assembly to rotate, thereby driving the driven gear 5 and the cable drum 2 to rotate. Since the driving gear 4 and the driven gear 5 rotate under the driving of the same motor, after the transmission of the adjusting transmission assembly, the transmission ratio of the driving gear 4 and the driven gear 5 can change within a certain range along with the structure of the adjusting transmission assembly, thereby facilitating the matching of the winding mode of the steel wire rope between the steel wire rope drum 3 and the lifting tool, and ensuring that the steel wire rope and the cable are in synchronous lifting state during the lifting of the lifting tool.

[0021] In another embodiment, the driving gear 4 is sleeved at one end of the steel wire rope drum 3 and in fixed connection with the steel wire rope drum 3; the driven gear 5 is located at one end of the cable drum 2 and in transmission connection with the cable drum 2.

[0022] In another embodiment, the adjusting transmission assembly comprises a mounting shaft 6, the mounting shaft 6 is in rotation connection with the mounting bracket 20, the mounting shaft 6 is fixedly connected with a first transmission gear 7, the first transmission gear 7 is in meshing arrangement with the driving gear 4, the mounting shaft 6 is further fixedly connected with a second transmission gear 8, and the second transmission gear 8 is in meshing with the driven gear 5. The driving gear 4 rotates to drive the first gear to rotate, the first gear drives the mounting shaft 6 to rotate, thereby driving the second transmission gear 8 to rotate, the second transmission gear 8 drives the driven gear 5 to rotate, and the synchronous rotation of the cable drum 2 and the steel wire rope drum 3 is realized.

[0023] In another embodiment, the adjusting transmission assembly comprises a mounting shaft 6 mounted on the mounting bracket 20, the first transmission gear 7 is rotatably connected on the mounting shaft 6, the first transmission gear 7 is meshingly arranged with the driving gear 4, the second transmission gear 8 is also rotatably connected on the mounting shaft 6, the second transmission gear 8 is meshingly arranged with the driven gear 5, and the second transmission gear 8 is fixedly connected with the first transmission gear 7. The driving gear 4 drives the first transmission gear 7 to rotate, the first transmission gear 7 drives the second transmission gear 8 to rotate, and then the second transmission gear 8 drives the driven gear 5 to rotate, so as to realize the synchronous rotation of the cable drum 2 and the steel wire rope drum 3.

[0024] In another embodiment, the first transmission gear 7 and the second transmission gear 8 are integrally arranged. Through the form of integral arrangement, the stability of the connection between the first transmission gear 7 and the second transmission gear 8 and the precision of the transmission are ensured.

[0025] In another embodiment, the outer diameter, the inner diameter and other size parameters of the driving gear 4 and the driven gear 5 are the same, and the number of teeth of the driving gear 4 and the driven gear 5 is also the same. By setting the driving gear 4 and the driven gear 5 as the same structural parameters, the complexity of the synchronous adjustment of the steel wire rope drum 3 and the cable drum 2 is reduced, and the convenience of operation is improved. At this time, only the number of teeth of the first transmission gear and the second transmission gear 8 needs to be adjusted. Specifically, the number of teeth of the first transmission gear 7 is A, the number of teeth of the second transmission gear is B, and A:B=n, n is a positive integer. By controlling the ratio of the number of teeth of the first transmission gear 7 and the second transmission gear 8, the transmission ratio of the first transmission gear 7 and the second transmission gear 8 is adjusted, and then the rotating speed of the driven gear 5 is adjusted to adapt to the winding mode of the steel wire rope. For example, when the steel wire rope adopts a single-thread winding mode, the outer diameter and the number of teeth of the driving gear 4 and the driven gear 5 are the same, the ratio of the number of teeth of the first transmission gear 7 and the second transmission gear 8 is A:B=1, and the cable and the steel wire rope can be kept in a synchronous lifting state; for another example, when the steel wire rope adopts a double-thread winding mode, the ratio of the number of teeth of the first transmission gear 7 and the second transmission gear 8 is A:B=2, and the power cable and the steel wire rope can be kept in a synchronous lifting state. The number of teeth of the driving gear 4 and the driven gear 5 is not limited in this embodiment.

[0026] In another embodiment, the mounting bracket 20 comprises a horizontally arranged connecting plate 9, two spaced apart support plates 10 are fixedly connected to the top of the connecting plate 9, the two support plates 10 are vertically arranged, mounting grooves 11 are formed in the top of the support plates 10, mounting shafts 6 are located at the bottom of the mounting grooves 11, baffles 12 are further installed on the outer side walls of the support plates 10, connecting shafts 13 are fixedly connected to the ends of the mounting shafts 6, the diameters of the connecting shafts 13 are smaller than the diameters of the mounting shafts 6, threaded holes are formed in the baffles 12 and adapted to the connecting shafts 13, the connecting shafts 13 pass through the threaded holes and extend to the outside of the baffles 12, and the baffles 12 are detachably fixedly connected to the support plates 10. The installation of the mounting shafts 6 is facilitated by the mounting grooves 11, and the positions of the mounting shafts 6 in the axial direction are limited by the baffles 12.

[0027] In another embodiment, threaded holes are formed in the baffles 12 on both sides of the connecting shaft 13, mounting holes corresponding to the threaded holes are formed in the support plates 10, and bolts 14 pass through the threaded holes, the mounting holes and are fixedly connected by nuts, i.e., the baffles 12 are detachably fixedly connected to the support plates 10 by the two bolts 14, the mounting shafts 6 are convenient to replace, the mounting shafts 6, the first transmission gear 7 and the second transmission gear 8 are convenient to replace according to the winding condition of the steel wire rope, the device is suitable for different lifting hangers, the adaptability of the device is improved, and the detachable fixed connection of the support plates 10 and the baffles 12 facilitates the maintenance and repair of the transmission assembly and reduces the production cost.

[0028] In another embodiment, the outer side walls of the support plates 10 are further fixedly connected with vertically arranged reinforcing plates 15, and the reinforcing plates 15 are fixedly connected to the top of the connecting plate 9. The stability of the connection of the transmission assembly is improved by the reinforcing plates 15.

[0029] In another embodiment, the first transmission gear 7, the second transmission gear 8, the driving gear 4, and the driven gear 5 are all nylon gears, and they all have the same module. Because nylon gears have high transmission accuracy and low backlash, they can maintain good synchronization performance under different loads, operating speeds, and temperature conditions. This ensures that the power cable and wire rope operate at the same speed, reducing problems such as excessive cable stretching or wire rope slack caused by inconsistency, thus protecting the wire rope and power cable and extending their service life. Simultaneously, during operation, they can reduce the uneven forces acting on the cable reel 2 and wire rope reel 3, reducing wear and the risk of damage. Furthermore, nylon gears have good self-lubricating properties, reducing the tedious work of frequently adding lubricant and reducing maintenance workload. Compared to metal gears, the raw material and processing costs of nylon gears are relatively low, contributing to a reduction in the overall cost of the device.

[0030] On the other hand, the drive mechanism includes a drive motor 16, with a reducer 17 drivenly connected to the output shaft of the drive motor 16. The output shaft of the reducer 17 is drivenly connected to the wire rope drum 3. The reducer 17 is fixedly connected to the mounting frame 1. The central axis of the drive motor 16 along its length is parallel to the central axis of the wire rope along its length, and the cable drum 2 and the drive motor 16 are located on the same side of the wire rope drum 3. The cable drum 2 is located on the mounting frame 1 on the side of the drive motor 16 away from the reducer 17. Specifically, in use, the mounting frame 1 is the crane trolley frame, which includes a first mounting beam 18 and a second mounting beam 19. The reducer 17 is fixedly connected to the top of the first mounting beam 18, and the end of the wire rope drum 3 away from the reducer 17 is rotatably connected to the top of the second mounting beam 19. The cable drum 2 is located on the trolley frame between the drive motor 16 and the second mounting beam 19. The drive motor 16 and the cable drum 2 can be coaxially or non-coaxially arranged; no specific limitation is made here. By placing the cable reel 2 between the drive motor 16 and the second mounting beam 19, the volume of the trolley frame is reduced, and its structural compactness is improved.

[0031] The above embodiments are not intended to limit the shape, material, structure, etc. of this utility model in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model shall fall within the protection scope of this utility model.

Claims

1. A device for synchronizing a cable reel with a lifting device, the device comprising a mounting frame, a cable reel, a wire rope reel, and a drive mechanism, wherein the drive mechanism is fixedly connected to the mounting frame, the output shaft of the drive mechanism is drively connected to one end of the wire rope reel, the other end of the wire rope is rotatably connected to the mounting frame, and both ends of the cable reel are rotatably connected to the mounting frame, characterized in that: The cable drum is arranged in parallel with the steel wire rope drum and located at one side of the steel wire rope drum, the steel wire rope drum is provided with a driving gear, the mounting frame between the cable drum and the steel wire rope drum is further provided with a mounting bracket, the mounting bracket is provided with an adjusting transmission assembly, the adjusting transmission assembly is in transmission connection with the driving gear, and the cable drum is provided with a driven gear in transmission connection with the adjusting transmission assembly.

2. A cable drum and spreader synchronisation apparatus according to claim 1, characterised in that: The driving gear is sleeved at one end of the steel wire rope drum and fixedly connected with the steel wire rope drum, and the driven gear is located at one end of the cable drum and in transmission connection with the cable drum.

3. A cable drum and spreader synchronisation apparatus according to claim 2, wherein: The adjusting transmission assembly comprises a mounting shaft, the mounting shaft is rotatably connected with the mounting bracket, the mounting shaft is fixedly connected with a first transmission gear, the first transmission gear is in meshing arrangement with the driving gear, and the mounting shaft is further fixedly connected with a second transmission gear, and the second transmission gear is in meshing arrangement with the driven gear.

4. A cable drum and spreader synchronisation apparatus according to claim 2, wherein: The adjusting transmission assembly comprises a mounting shaft, the mounting shaft is rotatably connected with the mounting bracket, the mounting shaft is fixedly connected with a first transmission gear, the first transmission gear is in meshing arrangement with the driving gear, and the mounting shaft is further fixedly connected with a second transmission gear, and the second transmission gear is in meshing arrangement with the driven gear.

5. A device for synchronizing a cable drum and a spreader according to claim 3 or 4, characterized in that: The first transmission gear and the second transmission gear are integrally arranged, and the driving gear and the driven gear are of the same number of teeth and the same outer diameter.

6. A cable drum and spreader synchronisation apparatus according to claim 5, wherein: The mounting bracket comprises a horizontally arranged connecting plate, the connecting plate is fixedly connected with two spaced-apart supporting plates at the top, the two supporting plates are vertically arranged, the supporting plates are provided with mounting grooves at the top, the mounting shaft is located at the bottom of the mounting groove, the outer side wall of the supporting plate is further provided with a baffle, the end of the mounting shaft is fixedly connected with a connecting shaft, the diameter of the connecting shaft is smaller than that of the mounting shaft, the baffle is provided with a connecting hole matched with the connecting shaft, the connecting shaft passes through the connecting hole and extends to the outside of the baffle, and the baffle is detachably fixedly connected with the supporting plate.

7. A cable drum and spreader synchronisation apparatus according to claim 6, wherein: Threaded holes are formed in the baffles on both sides of the connecting shaft, mounting holes corresponding to the threaded holes are formed in the supporting plate, and bolts pass through the threaded holes, the mounting holes and nuts in sequence and are fixedly connected.

8. A cable drum and spreader synchronisation apparatus according to claim 7, wherein: The outer side wall of the supporting plate is further fixedly connected with a vertically arranged reinforcing plate, and the reinforcing plate is fixedly connected to the top of the connecting plate.

9. A cable drum and spreader synchronisation apparatus according to claim 8, wherein: The first transmission gear, the second transmission gear, the driving gear and the driven gear are nylon gears, and the first transmission gear, the second transmission gear, the driving gear and the driven gear are of the same modulus.

10. A cable drum and spreader synchronization apparatus according to claim 1, wherein: The driving mechanism comprises a driving motor, the output shaft of the driving motor is in transmission connection with a speed reducer, the output shaft of the speed reducer is in transmission connection with the steel wire rope drum, the speed reducer is fixedly connected to the mounting frame, the central axis of the driving motor along the length direction is parallel to the central axis of the steel wire rope along the length direction, the cable drum and the driving motor are located on the same side of the steel wire rope drum, and the cable drum is located on the mounting frame on the side of the driving motor away from the speed reducer.

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