An electric lift

Abstract

The utility model relates to an electric lift, include: casing, set up in the drive mechanism of casing and by drive mechanism and lift execution mechanism of being driven, its characterized by: the lift execution mechanism includes transmission gear and rope wheel, transmission gear and rope wheel pass through the machining mode integrated tooth wheel - rope wheel complex that constitutes, the gear tooth of transmission gear is located the outer periphery of tooth wheel - rope wheel complex, the rope groove of rope wheel is located the inside of this complex, the power output end of drive mechanism and transmission gear meshing drive. By the machining mode of transmission gear and rope wheel by the same kind of metal material integrated into a composite part, eliminated the connecting shaft, keyway etc. connecting piece in traditional split type design.

Description

Technical Field

[0001] This utility model relates to the field of electric lifting device technology, specifically an electric lifting device. Background Technology

[0002] Electric scissors are a key piece of equipment widely used in high-altitude operations, evacuation crossings, escape, rescue, shaft rescue, and cave exploration. Their basic working principle involves a motor driving a pulley to rotate, thereby extending, retracting, or locking the rope, allowing the user to safely ascend or descend along it.

[0003] Existing electric lifts typically have a reduction gear and a pulley inside the housing, and a centrifugal speed limiting brake on the power input shaft to solve the problem of excessively fast descent speed caused by excessive pulley speed, effectively improving the safety of the equipment.

[0004] However, existing speed reduction devices typically use a separate manufacturing structure for the output gear and the pulley, which are then assembled and power transmitted via connecting shafts, keyways, and other components. This separate connection structure has the following inherent drawbacks: First, in frequent and high-load operating environments, connecting components (such as shafts and keys) are prone to wear, loosening, or even breakage. Once they fail, power transmission will be interrupted, leading to serious safety accidents. Second, there is a risk of fretting wear at the assembly interface, which will gradually reduce transmission accuracy and efficiency. Finally, the assembly of multiple parts also increases manufacturing costs and process complexity. Utility Model Content

[0005] The purpose of this utility model is to provide an electric lifting device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electric lifting device, comprising: a housing, a drive mechanism disposed within the housing, and a lifting execution mechanism driven by the drive mechanism, characterized in that: the lifting execution mechanism includes a transmission gear and a rope wheel, the transmission gear and the rope wheel are integrally formed by machining to form a gear-rope wheel composite, the teeth of the transmission gear are disposed on the outer periphery of the gear-rope wheel composite, the rope groove of the rope wheel is disposed on the inner side of the composite, and the power output end of the drive mechanism meshes with the transmission gear for transmission.

[0007] Optionally, the drive mechanism includes a reducer connected to an external motor and a drive gear, the drive gear being connected to the reducer via a transmission shaft, and the drive gear meshing with the transmission gear.

[0008] Optionally, a mounting hole is formed at the center of the gear-rope wheel composite, and an operating handle for manually controlling the rope descent is installed in the mounting hole.

[0009] Optionally, a plurality of limiting blocks are provided at intervals on the side wall of the rope groove of the rope pulley to prevent the rope from slipping out.

[0010] Optionally, the side of the housing is provided with abrasion blocks for protecting the ropes threaded inside the housing.

[0011] Optionally, the top of the housing is provided with a retaining ring for connecting an external support structure, and the retaining ring and the housing are integrally formed.

[0012] Optionally, the top of the housing is provided with a retaining ring for connecting an external support structure, and the retaining ring is detachably connected to the housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are: By machining the transmission gear and the rope pulley into a single composite part from the same metal material, the connecting shaft, keyway, and other connecting parts in the traditional split design are eliminated. This effectively avoids power transmission failure caused by wear, loosening, or breakage of connecting parts under high load and high frequency operation, greatly reducing the risk of safety accidents; and eliminates the possibility of fretting wear at the assembly interface. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 for Figure 2 A partial structural diagram; Figure 4 This is a schematic diagram of the overall structure of the present invention. Figure 2 . Detailed Implementation

[0015] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0016] like Figure 1-4As shown, an electric lifting device includes a housing 100, a drive mechanism disposed within the housing, and a lifting actuator driven by the drive mechanism. The lifting actuator includes a transmission gear 101 and a rope pulley 102. The transmission gear 101 and the rope pulley 102 are integrally formed by machining to form a gear-rope pulley composite. The teeth of the transmission gear 101 are disposed on the outer periphery of the gear-rope pulley composite, and the rope groove of the rope pulley 102 is disposed on the inner side of the composite. The power output end of the drive mechanism meshes with the transmission gear 101 for transmission. The gear-rope pulley composite integrates the transmission gear and the rope pulley into one unit. The side of the transmission gear is directly connected to the rope groove of the rope pulley, and the kinetic energy of the rotation of the transmission gear is directly transmitted to the rope pulley, achieving complete synchronization between the transmission gear and the rope pulley. This effectively avoids asynchronous rotation caused by resistance due to aging of the shafts used in the transmission gear and the rope pulley. When the external motor starts, the power is transmitted sequentially through the reducer 103, the drive shaft, and the drive gear 104 to the transmission gear 101, thereby driving the entire composite to rotate and realize the function of winding or releasing the rope.

[0017] The drive mechanism includes a reducer 103 connected to an external motor and a drive gear 104. The drive gear 104 is connected to the reducer 103 via a transmission shaft and meshes with the transmission gear 101. A mounting hole 105 is formed at the center of the gear-rope wheel composite, and an operating handle 500 for manually controlling rope descent is installed within the mounting hole 105. In case of power failure or when precise control is required, the user can crank the handle 500 to manually drive the entire transmission system and control the descent speed, ensuring safety in emergency situations. Several limiting blocks 201 are spaced apart on the rope groove sidewall of the rope wheel 102 to prevent rope slippage. The limiting blocks 201 can be made of wear-resistant materials with a high coefficient of friction, such as copper or engineering plastics. Abrasion-resistant blocks 401 are provided on the side of the housing to protect the rope passing through it. The abrasion-resistant blocks 401 can be made of wear-resistant nylon or polyurethane material, and their function is to protect the rope and prevent damage from direct friction between the rope and the metal housing.

[0018] To secure the electric lifter of this invention, a retaining ring is provided on the housing. Screws or nails pass through this retaining ring to fix the electric lifter to an external supporting structure (such as a wall or beam). The retaining ring and housing can be configured in two ways. The first method, as shown... Figure 1 As shown, the retaining ring 301 and the housing 100 are integrally formed. This design has high strength, good integrity, and is suitable for heavy-duty working conditions.

[0019] The second type, such as Figure 4As shown, the retaining ring is located outside the housing, and the retaining ring 301 is detachably connected to the housing 100. The advantage of this detachable design is that if the retaining ring 301 is deformed or damaged due to accidental impact, only the retaining ring part can be replaced without scrapping the entire housing, greatly saving maintenance costs.

[0020] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An electric lifting device, comprising a housing (100), a drive mechanism disposed within the housing, and a lifting actuator driven by the drive mechanism, characterized in that: The lifting actuator includes a transmission gear (101) and a rope wheel (102). The transmission gear (101) and the rope wheel (102) are integrally formed by machining to form a gear-rope wheel composite. The teeth of the transmission gear (101) are located on the outer periphery of the gear-rope wheel composite, and the rope groove of the rope wheel (102) is located on the inner side of the composite. The power output end of the drive mechanism meshes with the transmission gear (101) for transmission.

2. The electric lifting device according to claim 1, characterized in that, The drive mechanism includes a reducer (103) connected to an external motor and a drive gear (104). The drive gear (104) is connected to the reducer (103) via a transmission shaft and meshes with the transmission gear (101).

3. The electric lifting device according to claim 1, characterized in that, The gear-rope wheel composite has a mounting hole (105) at its center, and an operating handle (500) for manually controlling the rope descent is installed in the mounting hole (105).

4. An electric lifting device according to claim 1, characterized in that, The rope pulley (102) has several limit blocks (201) spaced apart on the side wall of the rope groove to prevent the rope from coming off.

5. An electric lifting device according to claim 1, characterized in that, The side of the shell is provided with abrasion blocks (401) for protecting the ropes that pass through the shell.

6. An electric lifting device according to claim 1, characterized in that, The top of the housing (100) is provided with a fixing ring (301) for connecting an external support structure. The fixing ring (301) and the housing (100) are integrally formed.

7. An electric lifting device according to claim 1, characterized in that, The top of the housing (100) is provided with a fixing ring (301) for connecting an external support structure, and the fixing ring (301) is detachably connected to the housing (100).

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