Double-powered hoist

Abstract

The present invention provides a dual-power hoist, which comprises a mounting frame, a spline-tooth heavy sprocket, a motor assembly, a transmission assembly, a braking assembly and a wrench. The spline-tooth heavy sprocket is arranged inside the mounting frame. The motor assembly is arranged on the mounting frame. The transmission assembly includes a multi-tooth long shaft, at least one set of gear sets and an idle gear. One end of the multi-tooth long shaft is connected to the output end of the motor assembly and coaxially sleeved inside the spline-tooth heavy sprocket. At least one set of gear sets is arranged on one side of the multi-tooth long shaft and meshes with the multi-tooth long shaft and the idle gear respectively. The idle gear meshes with the spline-tooth heavy sprocket to drive the spline-tooth heavy sprocket to rotate. The braking assembly includes a braking gear connected to the other end of the multi-tooth long shaft, a brake block that locks or separates from the braking gear, and a braking handle that changes the position of the brake block. The wrench is connected to the brake block, and the multi-tooth long shaft is connected through the locked brake block and the braking gear to drive the transmission assembly.

Description

Technical Field

[0001] The present invention relates to an electric hoist, and particularly to a dual-power hoist. Background Art

[0002] A hoist is a special lifting device installed on overhead cranes and gantry cranes. An electric hoist has the characteristics of small volume, light self-weight, simple operation, and convenient use; it is widely used in industrial and mining enterprises, warehousing, docks and other places.

[0003] At present, the hoists on the market are all single-power hoists, such as electric hoists or hydraulic hoists. An electric hoist uses electric energy as power, while a hydraulic hoist converts electric energy into hydraulic energy as power. Both of these hoists need to be connected to a power source to provide power during use. However, for the above-mentioned hoists with a single power source, when operating outdoors, due to the limited use environment, problems such as insufficient power or inability to supply power may occur for the hoist, the use scenario is relatively single, it cannot meet complex working environments, and it is difficult to achieve the purpose of labor-saving and convenience. Summary of the Invention

[0004] In order to overcome the problem that the existing hoist with a single power source cannot meet the operation requirements of complex outdoor scenarios, the present invention provides a dual-power hoist.

[0005] To achieve the above object, the present invention provides a dual-power hoist, which includes a mounting frame, a spline-tooth heavy sprocket, a motor assembly, a transmission assembly, a braking assembly, and a wrench. The spline-tooth heavy sprocket is arranged inside the mounting frame. The motor assembly is arranged on the mounting frame. The transmission assembly includes a multi-tooth long shaft, at least one set of gear sets, and an idle gear. One end of the multi-tooth long shaft is connected to the output end of the motor assembly and coaxially sleeved inside the spline-tooth heavy sprocket. At least one set of gear sets is arranged on one side of the multi-tooth long shaft and meshes with the multi-tooth long shaft and the idle gear respectively. The idle gear meshes with the spline-tooth heavy sprocket to drive the spline-tooth heavy sprocket to rotate. The braking assembly includes a braking gear connected to the other end of the multi-tooth long shaft, a brake block that locks or separates from the braking gear, and a brake handle that changes the position of the brake block. The wrench is connected to the brake block, and the multi-tooth long shaft is connected through the locked brake block and the braking gear to drive the transmission assembly.

[0006] According to an embodiment of the present invention, the transmission assembly includes two sets of gear sets symmetrically arranged on both sides of the multi-tooth long shaft. Each set of gear sets includes a driven gear and a driving gear arranged coaxially. The driven gear meshes with the multi-tooth long shaft; the idle gear is coaxially sleeved on the multi-tooth long shaft, and the driving gears in the two sets of gear sets respectively mesh with both sides of the idle gear to drive the idle gear to rotate.

[0007] According to an embodiment of the present invention, the brake block includes a brake block body and at least one locking portion protruding from the brake block body, and the bottom of the brake block body is arc-shaped. In the separated state, the bottom of the brake block body is located outside the brake gear, and the locking portion is in a horizontal position. In the locked state, the locking portion engages with the gear opening on the brake gear to form a linkage state.

[0008] According to an embodiment of the present invention, the brake block includes two locking portions symmetrically arranged on both sides of the brake block body.

[0009] According to an embodiment of the present invention, the motor assembly includes a driving motor and a planetary reducer connected to the output shaft of the driving motor, and one end of the multi-tooth long shaft is connected to the output of the planetary reducer.

[0010] According to an embodiment of the present invention, the axial direction of the motor assembly is parallel to the axial direction of the multi-tooth long shaft, and the double-power hoist further includes a pre-stage transmission assembly. The pre-stage transmission assembly includes a driving pulley connected to the output end of the motor assembly, a driven pulley coaxially connected to one end of the multi-tooth long shaft, and a belt sleeved on the driving pulley and the driven pulley.

[0011] According to an embodiment of the present invention, the double-power hoist further includes a protective cover covering the motor assembly and the pre-stage transmission assembly.

[0012] According to an embodiment of the present invention, the planetary reducer includes planetary gears, an internal gear ring for accommodating the planetary gears, and a planetary gear carrier sleeved on the output end of the planetary gears to fix the planetary gears.

[0013] According to an embodiment of the present invention, the motor assembly is coaxially connected to one end of the multi-tooth long shaft, and the multi-tooth long shaft has five meshing teeth.

[0014] According to an embodiment of the present invention, the spline tooth heavy sprocket has a spline groove in the shaft hole thereof that matches the multi-tooth long shaft. One end of the spline tooth heavy sprocket meshes with the idle gear, and the middle of the spline tooth heavy sprocket has a receiving groove for accommodating the hoisting chain.

[0015] In summary, in the dual-power hoist provided by the present invention, the motor assembly connected to one end of the multi-tooth long shaft provides electrical power for the transmission assembly to drive the spline-tooth heavy sprocket to rotate, while the wrench provides a manual power source for the transmission assembly through the braking assembly located at the other end of the multi-tooth long shaft. The dual-power hoist provided by the present invention integrates electric and manual dual powers. In scenarios where power supply is unavailable outdoors, etc., the wrench and the braking assembly can be used for manual operation; while in scenarios with electric power supply, power is provided by the motor assembly, which is more convenient, efficient, and labor-saving. Further, in the transmission assembly, on the one hand, the multi-tooth long shaft drives the engaged spline-tooth heavy sprocket to rotate through at least one set of gear sets and loose gears; on the other hand, since the multi-tooth long shaft is keyed to the spline-tooth heavy sprocket, the rotation of the multi-tooth long shaft itself will also drive the spline-tooth heavy sprocket to rotate; this setting provides a greater driving force for the spline-tooth heavy sprocket, making not only manual driving more labor-saving but also electric driving more energy-efficient.

[0016] In addition, the axial direction of the motor assembly is set parallel to the axial direction of the multi-tooth long shaft, that is, the motor assembly is arranged in the radial direction of the multi-tooth long shaft. This setting greatly shortens the length of the entire device to achieve miniaturization, so that it can be well applied to some environments with small spaces.

[0017] To make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, provides a detailed description as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure shows a schematic structural diagram of a dual-power hoist provided by an embodiment of the present invention.

[0019] Figure 2 As shown Figure 1 a schematic structural diagram after removing the protective cover.

[0020] Figure 3 As shown Figure 2 a partial exploded view of

[0021] Figure 4 For Figure 2 a schematic structural diagram from another perspective.

[0022] Figure 5 As shown Figure 2 a cross-sectional view of

[0023] Figure 6 As shown Figure 2 a cross-sectional view from another perspective.

[0024] Figure 7 As shown Figure 2 an assembly diagram of the wrench and the braking assembly in

[0025] Figure 8 As shown Figure 2 in the assembly schematic diagram of the front-stage transmission component in Specific embodiments

[0026] As Figure 1 and Figure 2 shown, the double-power hoist provided in this embodiment includes a mounting bracket 1, a spline-tooth heavy sprocket 2, a motor assembly 3, a transmission assembly 4, a brake assembly 5, and a wrench 6. The spline-tooth heavy sprocket 2 is arranged inside the mounting bracket 1. The motor assembly 3 is arranged on the mounting bracket 1. The transmission assembly 4 includes a multi-tooth long shaft 41, at least one set of gear sets 42, and an idler gear 43. One end of the multi-tooth long shaft 41 is connected to the output end of the motor assembly 3 and coaxially sleeved inside the spline-tooth heavy sprocket 2. At least one set of gear sets 42 is arranged on one side of the multi-tooth long shaft 41 and meshes with the multi-tooth long shaft 41 and the idler gear 43 respectively. The idler gear 43 meshes with the spline-tooth heavy sprocket 2 to drive the spline-tooth heavy sprocket 2 to rotate. The brake assembly 5 includes a brake gear 51 connected to the other end of the multi-tooth long shaft 41, a brake block 52 that locks or separates from the brake gear 51, and a brake handle 53 that changes the position of the brake block 52. The wrench 6 is connected to the brake block 53, and the multi-tooth long shaft 41 is connected through the locked brake block 53 and brake gear 51 to drive the transmission assembly 4 to achieve manual driving.

[0027] In the double-power hoist provided in this embodiment, the motor assembly 3 and the brake assembly 5 are respectively connected to both ends of the multi-tooth long shaft 41 inside the transmission assembly 4, and the two respectively provide electric power and manual power through the multi-tooth long shaft 41 to integrate the double power into one. This setting not only retains the convenient and efficient characteristics of the existing electric hoist, but also the manual driving setting enables it to be applied to working environments without electricity, greatly improving its versatility. Further, the electric drive and manual drive provided based on the same transmission assembly 4 also greatly improve the integration of the equipment, simplify the structure and volume of the equipment, and achieve the miniaturized design of the equipment.

[0028] For the transmission assembly 4, the multi-tooth long shaft 41 drives the spline-tooth heavy sprocket 2 through two power transmission paths. Specifically, the multi-tooth long shaft 41, at least one set of gear sets 42, and the idler gear 43 form the first power transmission path; and the multi-tooth long shaft 41 and the spline-tooth heavy sprocket 2 are spline-bonded, and the spline-tooth heavy sprocket 2 will rotate following the multi-tooth long shaft 41 through the matching of the spline and the spline groove, forming the second power transmission path. The setting of the two power transmission paths greatly saves the force driven by the wrench 6 and the electric energy driven by the motor assembly 3. In this embodiment, the inner hole of the shaft of the spline-tooth heavy sprocket 2 has a spline groove matching the multi-tooth long shaft 41, one end of the spline-tooth heavy sprocket 2 has teeth meshing with the idler gear 43, and the middle part of the spline-tooth heavy sprocket 2 has a receiving groove 21 for receiving the lifting chain 8. The spline-tooth heavy sprocket 2 integrates transmission and the suspension of the lifting chain 8.

[0029] In this embodiment, as Figure 3 shown, the transmission assembly 4 includes two sets of gear sets 42 symmetrically arranged on both sides of the multi-tooth long shaft 41. Each set of gear sets 42 includes a driven gear 421 and a driving gear 422 arranged coaxially. The driven gear 421 meshes with the multi-tooth long shaft 41. The idle gear 43 is coaxially sleeved on the multi-tooth long shaft 41, and the driving gears 422 in the two sets of gear sets 42 respectively mesh with both sides of the idle gear 43 to drive the idle gear 43 to rotate. However, the present invention does not make any limitation thereto. In other embodiments, the transmission assembly 4 may also include one set or more than three sets of gear sets. Further, in this embodiment, the multi-tooth long shaft 41 is a five-tooth long shaft. However, the present invention does not make any limitation thereto.

[0030] In this embodiment, as Figure 5 shown, the motor assembly 3 includes a driving motor 31 and a planetary reducer 32 connected to the output shaft of the driving motor 31. The output of the driving motor 31 is output to the multi-tooth long shaft 41 after being decelerated by the planetary reducer 32 to increase the torque. In this embodiment of China, the motor assembly 31 is arranged on the radial side of the multi-tooth long shaft, the axis of the driving motor 31 is parallel to the axis of the multi-tooth long shaft 41, the motor assembly 3 further includes a pre-stage transmission assembly 33, and the output of the planetary reducer 32 is transmitted to one end of the multi-tooth long shaft 41 through the pre-stage transmission assembly 33. This setting greatly reduces the length of the entire device in the axial direction of the multi-tooth long shaft 41. However, the present invention does not make any limitation thereto. In other embodiments, the motor assembly may not be provided with a pre-stage transmission assembly. At this time, the motor assembly is arranged along the axial direction of the multi-tooth long shaft, and the output of the planetary reducer is directly connected to one end of the multi-tooth long shaft.

[0031] As Figure 5 and 8 shown, the pre-stage transmission assembly 33 includes a driving pulley 331 connected to the output end of the planetary reducer 32, a driven pulley 332 coaxially connected to one end of the multi-tooth long shaft 41, and a belt 333 sleeved on the driving pulley 331 and the driven pulley 332. Specifically, the diameter of the driven pulley 332 is larger than that of the driving pulley 331 to increase the power. However, the present invention does not make any limitation to the specific structure of the pre-stage transmission assembly. In this embodiment, the planetary reducer 32 includes a planetary gear 321, an internal gear ring 322 for accommodating the planetary gear, and a planetary gear carrier 323 sleeved on the output end of the planetary gear 321 to fix the planetary gear 321.

[0032] In this embodiment, the double-power hoist further includes a protective cover 7 covering the motor assembly 3 and the pre-stage transmission assembly 33. On the one hand, the protective cover 7 prevents dust and the like from entering the motor assembly 3 and the pre-stage transmission assembly 33; on the other hand, it also greatly improves the safety of operation for the operator.

[0033] For manual power, the wrench 6 is connected to the multi-tooth long shaft 41 through the braking assembly 5. As Figure 7 shown, the brake block 52 includes a brake block body 521 and at least one locking portion 522 protruding from the brake block body 521. The bottom of the brake block body 521 is arc-shaped. In this embodiment, the brake block 52 includes two locking portions 522 symmetrically arranged on both sides of the brake block body 521. This setting enables the operator to simply move the brake handle 53 to either side to clamp the locking portion 522 into the brake gear 51 to achieve the linkage between the two, which is very convenient for operation. However, the present invention does not make any limitations in this regard. In other embodiments, the brake block may also include only one locking block, and the operator rotates the brake handle in a specified direction to lock the locking portion and the brake gear.

[0034] Specifically, in the separated state, the bottom of the brake block body 521 is located outside the brake gear 53, and the two locking portions 522 are in a horizontal position. The brake block body 521 with an arc-shaped bottom is separated from the brake gear 53, and the brake block body 521 will not interfere with the brake gear 53 that follows the movement of the multi-tooth long shaft 41. In the locked state, the locking portion 522 engages with the gear opening on the brake gear 53 to form a linkage state. The wrench 6 drives the brake gear 53 to rotate through the locking portion 522, and then drives the multi-tooth long shaft 41 to rotate, thereby realizing the rotation of the spline tooth heavy sprocket.

[0035] The following will combine Figures 1 to 8 to introduce in detail the working principle of the dual-power hoist provided in this embodiment.

[0036] When working in an environment with power supply, start the power supply. When the driving motor 31 rotates clockwise, the motor gear mounted on the motor 31 drives the driving pulley 331 mounted on the planetary gear bracket 323 after increasing the power through the planetary reducer 32. The driving pulley 331 drives the driven pulley 332 through the belt 333 to increase the power. The driven pulley 332 drives the coaxial multi-tooth long shaft 41. The multi-tooth long shaft 41 drives the spline tooth heavy sprocket 2 not only through the first power transmission path of the driven gear 421, the driving gear 422 and the loose pulley 43, but also directly drives the spline tooth heavy sprocket 2 to form a second power transmission path. The spline tooth heavy sprocket 2 tightens the chain 8 or the steel cable, thereby realizing lifting. When the driving motor 31 rotates counterclockwise, similarly, the spline tooth heavy sprocket 2 moves in the opposite direction to loosen the chain or the steel cable.

[0037] When the power supply is insufficient or there is no power, the operator toggles the brake handle 53 to both sides, and the locking part 522 on the brake block 52 will be stuck on the brake gear 51. At this time, the brake block 52 and the brake gear 53 are linked, and the wrench 6 is indirectly connected to the multi-tooth long shaft 41. The operator manually rotates the wrench 6 clockwise. The multi-tooth long shaft 41 not only drives the spline tooth heavy sprocket 2 through the first power transmission path of the driven gear 421, the driving gear 422 and the loose pulley gear 43, but also directly drives the spline tooth heavy sprocket 2 to form a second power transmission path. The spline tooth heavy sprocket 2 tightens the hoisting chain 8 or the steel cable, thereby realizing hoisting. When the wrench 6 is rotated counterclockwise, similarly, the spline tooth heavy sprocket 2 moves in the opposite direction to loosen the hoisting chain 8 or the steel cable.

[0038] In summary, in the double-power hoist provided by the present invention, the motor assembly connected to one end of the multi-tooth long shaft provides electrical power for the transmission assembly to drive the spline tooth heavy sprocket to rotate, while the wrench provides a manual power source for the transmission assembly through the brake assembly located at the other end of the multi-tooth long shaft. The double-power hoist provided by the present invention integrates electric and manual double powers. In scenarios where power supply is unavailable outdoors, etc., the wrench and the brake assembly can be used for manual operation; while in scenarios with electrical power supply, power is provided by the motor assembly, which is more convenient, efficient and labor-saving. Further, in the transmission assembly, on the one hand, the multi-tooth long shaft drives the engaged spline tooth heavy sprocket to rotate through at least one set of gear sets and the loose pulley gear; on the other hand, since the multi-tooth long shaft is keyed to the spline tooth heavy sprocket, the rotation of the multi-tooth long shaft itself will also drive the spline tooth heavy sprocket to rotate; this setting provides a greater driving force for the spline tooth heavy sprocket, making it not only more labor-saving for manual driving but also more energy-saving for electric driving.

[0039] In addition, the axis of the motor assembly is set parallel to the axis of the multi-tooth long shaft, that is, the motor assembly is arranged in the radial direction of the multi-tooth long shaft. This setting greatly shortens the length of the entire device to achieve miniaturization, so that it can be well applied to some environments with small spaces.

[0040] Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in this art can make some modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope claimed in the claims.

Claims

1. A double-powered hoist, characterized in that, Comprising: Mounting bracket; Spline-tooth heavy sprocket, arranged inside the mounting bracket; Motor assembly, arranged on the mounting bracket; Transmission assembly, including a multi-tooth long shaft, at least one set of gear sets and an idler gear. One end of the multi-tooth long shaft is connected to the output end of the motor assembly and coaxially sleeved inside the spline-tooth heavy sprocket. At least one set of gear sets is arranged on one side of the multi-tooth long shaft and meshes with the multi-tooth long shaft and the idler gear respectively. The idler gear meshes with the spline-tooth heavy sprocket to drive the spline-tooth heavy sprocket to rotate; Brake assembly, including a brake gear connected to the other end of the multi-tooth long shaft, a brake block that locks or separates from the brake gear, and a brake handle for changing the position of the brake block; Wrench, connected to the brake block, and connects the multi-tooth long shaft through the locked brake block and brake gear to drive the transmission assembly; Wherein, the transmission assembly includes two sets of gear sets symmetrically arranged on both sides of the multi-tooth long shaft. Each set of gear sets includes a driven gear and a driving gear arranged coaxially. The driven gear meshes with the multi-tooth long shaft; the idler gear is coaxially sleeved on the multi-tooth long shaft, and the driving gears in the two sets of gear sets respectively mesh with both sides of the idler gear to drive the idler gear to rotate.

2. The double-powered hoist according to claim 1, wherein, The brake block includes a brake block body and at least one locking portion protruding from the brake block body. The bottom of the brake block body is arc-shaped; In the separated state, the bottom of the brake block body is located outside the brake gear, and the locking portion is in a horizontal position; In the locked state, the locking portion engages with the gear notch on the brake gear to form a linkage state.

3. The double-powered hoist according to claim 2, characterized in that, The brake block includes two locking portions symmetrically arranged on both sides of the brake block body.

4. The double-powered hoist according to claim 1, wherein, The motor assembly includes a driving motor and a planetary reducer connected to the output shaft of the driving motor. One end of the multi-tooth long shaft is connected to the output of the planetary reducer.

5. The double-powered hoist according to claim 1 or 4, characterized in that, The axis of the motor assembly is parallel to the axis of the multi-tooth long shaft. The double-power hoist further includes a pre-stage transmission assembly. The pre-stage transmission assembly includes a driving pulley connected to the output end of the motor assembly, a driven pulley coaxially connected to one end of the multi-tooth long shaft, and a belt sleeved on the driving pulley and the driven pulley.

6. The double-powered hoist according to claim 5, characterized in that, The double-power hoist further includes a protective cover covering the motor assembly and the pre-stage transmission assembly.

7. The double-powered hoist according to claim 4, characterized in that, The planetary reducer includes planetary gears, an internal gear ring for accommodating the planetary gears, and a planetary gear carrier sleeved on the output end of the planetary gears to fix the planetary gears.

8. The double-powered hoist according to claim 1, characterized in that, The motor assembly is coaxially connected to one end of the multi-tooth long shaft, and the multi-tooth long shaft has five meshing teeth.

9. The double-powered hoist according to claim 1, wherein, The shaft hole of the spline-tooth heavy sprocket has a spline groove matching with the multi-tooth long shaft. One end of the spline-tooth heavy sprocket meshes with the idler gear, and the middle of the spline-tooth heavy sprocket has a receiving groove for accommodating the lifting chain.

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