A lifting device

Abstract

The present invention discloses a lifting device, which includes a box body provided with a rope inlet and outlet. A rope wheel is arranged inside the box body. A positioning block is arranged inside the box body and at the rope inlet and outlet. The positioning block divides the rope inlet and outlet into two wire routing channels. A rope groove is formed on the rope wheel. The two wire routing channels are docked with the rope groove and are located on the same plane. The steel wire rope enters the inside of the box body from one wire routing channel, bypasses the rope wheel along the rope groove, and exits from the other wire routing channel. A wire retaining mechanism is arranged inside the box body and around the rope wheel. The wire retaining mechanism presses and confines the steel wire rope in the rope groove. The above device uses the wire retaining mechanism to act on the two side surfaces and the upper surface of the rope wheel, ensuring that the steel wire rope is accurately embedded in the rope groove and ensuring the friction force. The wrap angle range is large, the load capacity is large, and the force applied by the pressure wheel can be adjusted according to the load capacity to make the force on the rope wheel uniform. In addition, the steel wire rope runs in one plane, no wire dividing block needs to be set, the rope arranging is smooth, the driving efficiency is high, the service life is long, and the whole is small and light.

Description

Technical Field

[0001] The present invention relates to the technical field of hoists, and in particular to a lifting device. Background Art

[0002] In the construction, decoration and renovation works of the outer walls of high-rise and multi-storey buildings, working at heights is often required. The hoist is used as the power device for the suspended platform for working at heights and plays a crucial role. The traditional hoist has the problem of difficult rope separation. Since the incoming rope and the outgoing rope are not in the same plane when the steel wire rope is wound around the rope pulley, there is an intersection point, and a rope separation block needs to be set at the intersection for separation to avoid the friction of the steel wire rope. The setting of the rope separation block increases the structural complexity and it is difficult to control the volume of the lifting device. In addition, some winch-type hoists often have problems such as rope jamming and poor rope laying. Therefore, it is necessary to further optimize the structure of the existing lifting device to meet the use requirements. Summary of the Invention

[0003] Based on the above, the present invention provides a lifting device, which optimizes the internal rope winding method and transmission structure to solve the problems of difficult rope separation and poor rope laying of the traditional hoist.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A lifting device, which includes a box body provided with an incoming and outgoing rope opening. A rope pulley is arranged inside the box body. A positioning block is arranged inside the box body and at the incoming and outgoing rope opening. The positioning block divides the incoming and outgoing rope opening into two wire routing channels. A rope groove is formed on the rope pulley. The two wire routing channels are docked with the rope groove and are located in the same plane. The steel wire rope enters the inside of the box body from one wire routing channel, bypasses the rope pulley along the rope groove, and exits from the other wire routing channel. A rope blocking mechanism is arranged inside the box body and around the rope pulley. The rope blocking mechanism presses and restricts the steel wire rope in the rope groove.

[0006] Specifically, the rope blocking mechanism includes two pressing rope components correspondingly located on both sides of the rope pulley. The pressing rope component includes a bent rod, the bent rod is hinged to the box body, and a pressing wheel is arranged on the bent rod. The pressing wheel is in contact with the steel wire rope in the rope groove.

[0007] Specifically, the upper ends of the bent rods on both sides are connected by an adjusting component. The adjusting component includes a spring and a connecting rod. One end of the spring is fixed to the bent rod on one side, and the other end is fixed to the connecting rod. The connecting rod is fixed to the bent rod on the other side, and the length of the connecting rod is adjustable.

[0008] Specifically, a guiding wheel is arranged on the bent rod. The guiding wheel is located on one side of the positioning block, so that the steel wire rope can be smoothly wound around the rope pulley after passing through the guiding wheel.

[0009] Specifically, the guiding wheel is arranged on the hinge shaft of the bent rod and the box body.

[0010] Particularly, the positioning block extends into the rope groove but does not contact the groove wall, and the end portion is arranged in an arc shape transitionally connected with the groove bottom surface.

[0011] Particularly, the bending rod is also provided with side blocking wheels.

[0012] In particular, the rope blocking mechanism comprises an upper baffle plate located above the rope wheel, the upper baffle plate is arc-shaped, and a groove is formed on the arc surface thereof facing the rope groove.

[0013] In particular, it also includes a driving mechanism, which includes a motor, a gear shaft and a reduction gear. The motor drives the gear shaft to rotate, the gear shaft meshes with the large diameter part of the reduction gear for transmission, and the rope wheel meshes with the small diameter part of the reduction gear.

[0014] In summary, the beneficial effects of the present invention are that, compared with the prior art, the lifting device has the following advantages:

[0015] ① The rope blocking mechanism used acts on the two sides and top of the rope pulley, with a large wrap angle range, large friction force and large load capacity;

[0016] ② The adjustment component can adjust the pressure according to the load so that the rope pulley is evenly stressed;

[0017] ③The wire rope runs in one plane, no need to set up rope dividing blocks, smooth rope arrangement, high driving efficiency and long service life;

[0018] ④The straight tooth transmission is adopted to replace the traditional worm gear structure, which can better control the size of the device, making it small and light. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the internal structure of a lifting device provided by an embodiment of the present invention;

[0020] Figure 2 It is a cross-sectional view of a lifting device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0022] See also Figure 1 and 2 As shown, this embodiment provides a lifting device, which includes a box body 1, a rope wheel 2, a rope blocking mechanism and a driving mechanism.

[0023] A rope inlet and outlet opening 3 is provided on the box body 1, and a positioning block 4 is provided inside the box body 1 and at the rope inlet and outlet opening 3. The positioning block 4 divides the rope inlet and outlet opening 3 into two routing channels. The rope wheel 2 is arranged in the box body 1, and a rope groove 5 is provided on the rope wheel 2. The positioning block 4 extends into the rope groove 5 but does not contact the groove wall, and the end is arranged in an arc shape that transitions to the bottom surface of the groove.

[0024] Two wire routing channels are docked with the rope groove 5 and are located on the same plane. The steel wire rope enters the interior of the box body 1 from one wire routing channel, bypasses the rope wheel 2 along the rope groove 5, and then exits from the other wire routing channel.

[0025] The rope retaining mechanism is arranged inside the box body 1 and is located around the rope wheel 2, and is used to press and limit the steel wire rope in the rope groove 5. The rope retaining mechanism includes two pressing rope assemblies 6 correspondingly located on both sides of the rope wheel 2 and an upper baffle 7 located above the rope wheel 2.

[0026] The pressing rope assembly 6 includes a bent rod 8, and the bent rod 8 is hinged to the box body 1. Specifically, the hinged part is preferably the lower end of the bent rod 8. A pressing wheel 9, a guiding wheel 10, and a side retaining wheel 11 are arranged on the bent rod 8. The pressing wheel 9 is in contact with the steel wire rope in the rope groove 5. The guiding wheel 10 is arranged at the lower end of the bent rod 8 and on one side of the positioning block 4. At the same time, the guiding wheel 10 is arranged on the hinge axis of the bent rod 8 and the box body 1, so that the steel wire rope can smoothly wind around the rope wheel 2 after passing through the guiding wheel 10. The side retaining wheel 11 is used to increase the rope wrap angle.

[0027] The upper ends of the bent rods 8 on both sides are connected by an adjusting assembly. The adjusting assembly includes a spring 12 and a connecting rod 13. One end of the spring 12 is fixed to the bent rod 8 on one side, and the other end is fixed to the connecting rod 13. The connecting rod 13 is fixed to the bent rod 8 on the other side. The length of the connecting rod 13 is adjustable, and the pressing force of the pressing wheel 9 on the steel wire rope is set through the adjusting assembly.

[0028] The upper baffle 7 is arc-shaped, and a groove 14 is formed on the arc surface facing the rope groove 5.

[0029] The driving mechanism includes a motor 15, a gear shaft 16, and a reduction gear 17. The motor 15 drives the gear shaft 16 to rotate. The gear shaft 16 is meshed and driven with the large-diameter part of the reduction gear 17. The rope wheel 2 is externally meshed with the small-diameter part of the reduction gear 17. The motor 15 drives the gear shaft 16, drives the rope wheel 2 to rotate through the reduction gear 17, and further realizes the lifting of the steel wire rope on the rope wheel 2.

[0030] In summary, the above-mentioned lifting device uses a rope retaining mechanism to act on the two side surfaces and the upper surface of the rope wheel, ensuring that the steel wire rope is accurately embedded in the rope groove and ensuring the friction force. The rope wrap angle range is large, the load capacity is large, and the pressing force of the pressing wheel can be adjusted according to the load capacity, so that the rope wheel is evenly stressed. In addition, the steel wire rope runs in one plane, there is no need to set a wire dividing block, the rope laying is smooth, the driving efficiency is high, the service life is long, and the overall structure is small and light.

[0031] The above embodiments only illustrate the basic principles and characteristics of the present invention. The present invention is not limited by the above examples. Without departing from the spirit and scope of the present invention, there are various changes and modifications to the present invention, and these changes and modifications all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device, comprising a box body provided with a rope inlet and outlet, and a rope wheel is arranged inside the box body, characterized in that, A positioning block is arranged inside the box body and at the rope inlet and outlet. The positioning block divides the rope inlet and outlet into two wire routing channels. A rope groove is formed on the rope wheel. The two wire routing channels are docked with the rope groove and are located on the same plane. The steel wire rope enters the inside of the box body from one wire routing channel, bypasses the rope wheel along the rope groove, and then exits from the other wire routing channel. A wire blocking mechanism is arranged inside the box body and around the periphery of the rope wheel. The wire blocking mechanism presses and confines the steel wire rope in the rope groove; The wire blocking mechanism includes two wire pressing components correspondingly located on both sides of the rope wheel. Each wire pressing component includes a bent rod. The bent rod is hinged to the box body. A pressing wheel is arranged on the bent rod. The pressing wheel is in contact with the steel wire rope in the rope groove; The upper ends of the bent rods on both sides are connected by an adjusting component. The adjusting component includes a spring and a connecting rod. One end of the spring is fixed to the bent rod on one side, and the other end is fixed to the connecting rod. The connecting rod is fixed to the bent rod on the other side. The length of the connecting rod is adjustable; The wire blocking mechanism includes an upper baffle plate located above the rope wheel. The upper baffle plate is arc-shaped, and a groove is formed on the arc surface facing the rope groove.

2. The lifting device according to claim 1, characterized in that: A guiding wheel is arranged on the bent rod. The guiding wheel is located on one side of the positioning block, so that the steel wire rope can smoothly wind around the rope wheel after passing through the guiding wheel.

3. The lifting device according to claim 2, wherein: The guiding wheel is arranged on the hinge shaft of the bent rod and the box body.

4. The lifting device according to claim 2, wherein: The positioning block extends into the rope groove but does not contact the groove wall, and the end is set as an arc that is transitionally connected to the groove bottom surface.

5. The lifting device according to claim 1, characterized in that: A side blocking wheel is also arranged on the bent rod.

6. The lifting device according to claim 1, wherein: A driving mechanism is further included. The driving mechanism includes a motor, a gear shaft, and a reduction gear. The motor drives the gear shaft to rotate. The gear shaft is meshed and transmitted with the large-diameter part of the reduction gear. The rope wheel is externally meshed with the small-diameter part of the reduction gear.

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