Lightweight carrying lifting device
By designing an adjustable locking mechanism and a lubrication replenishment mechanism, the problems of synchronous locking of the gear set and insufficient lubrication in portable lifting devices were solved, thereby improving safety and transmission efficiency, extending equipment service life and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 嘉兴御创电力科技有限公司
- Filing Date
- 2026-02-15
- Publication Date
- 2026-05-12
AI Technical Summary
Existing portable lifting devices have limitations in the design of locking mechanisms during power construction, which makes the gear sets prone to relative rotation, affecting safety and service life. In addition, they lack an independent lubrication oil replenishment mechanism, which affects transmission efficiency and construction progress.
An adjustment locking mechanism and a lubricating oil replenishment mechanism were designed. The gears are synchronously locked through the first and second engagement teeth. Combined with the oil tank, hand-operated airbag and oil replenishment pipe, the lubricating oil is automatically replenished to ensure the synchronous positioning and lubrication of the gear set.
It achieves synchronous locking of the gear set, preventing equipment from falling and mechanical impact, improving transmission stability and service life, while ensuring timely replenishment of lubricating oil, reducing maintenance costs and construction delays.
Smart Images
Figure CN122009998A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of power construction hoisting equipment technology, specifically a lightweight portable lifting device. Background Technology
[0002] In the hoisting operations of high-voltage power line construction in the power industry, portable lifting devices have gradually become core auxiliary equipment for the rapid installation of small batches of power equipment due to their adaptability to the flexible operation requirements of the construction site. Most existing portable lifting devices are adapted to the electric drills commonly used by construction workers and use internal multi-stage gear transmission to amplify torque to realize the lifting operation of the hoisting equipment. However, there are still many technical defects in practical applications, which restrict the safety of operation and the service life of the equipment.
[0003] On the one hand, the existing locking mechanism design has limitations. Most of them can only lock a single gear or rely on simple mechanical structures for passive protection, making it difficult to achieve synchronous locking of the large gear and the small gear. When the electric drill stops working, the gear set is prone to relative rotation due to the gravity of the hoisting equipment, which may cause the equipment to slide unexpectedly or fall rapidly, greatly threatening the safety of construction personnel and the integrity of the equipment. Even if some devices are equipped with locking components, mechanical impact is often caused by asynchronous locking between gears, which aggravates gear wear and affects the stability of transmission.
[0004] On the other hand, during long-term high-speed transmission, the lubricating oil in the gear set inside the device will gradually wear out and age, leading to increased frictional resistance between gears. This not only reduces torque transmission efficiency and affects lifting speed and accuracy, but also accelerates gear wear and shortens the service life of the equipment. Furthermore, existing portable lifting devices generally lack a built-in lubricating oil replenishment mechanism, requiring manual disassembly of the device periodically to add lubricating oil. This operation is cumbersome and prone to causing gear jamming, transmission failure, and other malfunctions due to untimely replenishment or improper dosage, which seriously affects the construction progress. Summary of the Invention
[0005] Therefore, the purpose of this invention is to provide a lightweight portable lifting device to solve the technical problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a lightweight portable lifting device, comprising a housing assembly, a gear transmission assembly, an adjustment and locking mechanism, a lubricating oil replenishment mechanism, a power input assembly, and a lifting execution assembly; The housing assembly includes a first housing and a second housing that cooperate with each other. The first housing and the second housing enclose a mounting cavity for accommodating internal components. The second housing has a hanging hole. The power input component is a power input end, which is installed through the housing assembly. One end of the power input end is connected to a pinion gear, and the other end is used to be adapted to the drill sleeve. The hoisting execution assembly includes a central shaft, a first clamping plate, and a second clamping plate. One end of the central shaft is fixedly connected to a large gear, and the other end is fixedly connected to the first clamping plate and the second clamping plate. The first clamping plate and the second clamping plate are used to hang ropes in a ring. The first clamping plate and the second clamping plate have the same structure and are symmetrically arranged. The opposite end faces of the two are provided with anti-slip texture. The gear transmission assembly, the adjustment and locking mechanism, and the lubricating oil replenishment mechanism are all assembled inside the housing assembly. The power input assembly is connected to the gear transmission assembly to provide hoisting power. The adjustment and locking mechanism is adapted to the gear transmission assembly to achieve synchronous locking of the gears. The lubricating oil replenishment mechanism is set corresponding to the gear transmission assembly to achieve lubrication replenishment of the gear set. The hoisting execution assembly is connected to the gear transmission assembly to complete the equipment hoisting operation. The gear transmission assembly includes a pinion and a large gear. The pinion is connected to the power input assembly, the large gear meshes with the pinion for transmission, and the large gear is connected to the hoisting execution assembly. The adjusting locking mechanism includes an adjusting component for triggering the locking action and a locking component for achieving double locking. Under the control of the adjusting component, the locking component can engage with different gears of the gear transmission assembly to achieve synchronous limiting of the gear set and prevent the equipment from falling due to relative rotation of the gears during hoisting. The adjusting components of the adjusting locking mechanism include a fixed block, a flip handle, and an adjusting block, wherein the fixed block is fixed to the outside of the housing assembly; The flip handle is rotatably connected to the fixed block, and an adjustment block extending into the housing assembly is provided on the inner side of the flip handle. The locking component is a locking block, which is rotatably connected to the housing assembly via a rotating shaft. The locking block is provided with an opening and closing shaft, a spring, a first engaging tooth, and a second engaging tooth. The opening and closing shaft is adapted to the adjusting block, the spring is fixed between the locking block and the housing assembly, the first engaging tooth is adapted to the pinion, and the second engaging tooth is adapted to the gear. One end of the spring is connected to the locking block, and the other end is fixed inside the housing assembly. After the flip handle is opened, the first and second engaging teeth remain separated from the pinion and gear, respectively. The lubricating oil replenishment mechanism includes an oil storage component, a control component, and a conveying component. The control component drives the lubricating oil in the oil storage component to flow to the gear transmission assembly through the conveying component. Lubrication replenishment can be completed without disassembling the device, ensuring gear transmission efficiency. The oil storage component of the lubricating oil replenishment mechanism is an oil tank, the control component is a hand-operated air bladder, and the delivery component is an oil replenishment pipe; The fuel tank is fixed inside the housing assembly. The fuel tank outlet is equipped with a normally closed valve. One end of the fuel replenishment pipe is connected to the fuel tank, and the other end extends to the outside of the housing assembly. A sealing cap is threaded to its end. The hand-operated airbag is connected to the inside of the fuel tank. The normally closed valve is made of elastic sealing material and remains closed under natural conditions. It can open automatically when the internal air pressure of the fuel tank increases.
[0007] In summary, the present invention has the following main beneficial effects: 1. This invention achieves multiple technological breakthroughs through the design of an adjustable locking mechanism and a lubricating oil replenishment mechanism. With the synergistic effect of the adjustable locking mechanism and the locking block, the first and second engaging teeth engage synchronously with the small gear and the large gear respectively, forming a double locking protection. This completely eliminates the risk of equipment falling due to relative rotation of gears when the electric drill stops operating. At the same time, it avoids mechanical impact caused by asynchronous locking, reduces gear wear, and improves transmission stability and device service life. 2. The present invention uses a lubricating oil replenishment mechanism consisting of an oil tank, a hand-operated airbag, an oil replenishment pipe, and a normally closed valve to quickly complete lubrication replenishment without disassembling the device. It is easy to operate and replenishes oil in a timely manner, effectively reducing gear friction resistance, ensuring torque transmission efficiency and hoisting accuracy, avoiding gear jamming, transmission failure and other faults caused by lubricating oil loss, and reducing maintenance costs and construction delay risks. Attached Figure Description
[0008] Figure 1 This is an exploded structural diagram of the entire invention; Figure 2 For the present invention Figure 1 Enlarged view of point A; Figure 3 This is an enlarged view of the internal structure of the present invention; Figure 4 This is an enlarged cross-sectional view of a portion of the structure of the present invention; Figure 5 This is a schematic diagram of the locking block of the present invention; Figure 6 This is a schematic diagram of the overall structure of the present invention.
[0009] In the diagram: 1. First housing; 2. Second housing; 3. Small gear; 4. Large gear; 5. Adjustment locking mechanism; 501. Fixing block; 502. Flip handle; 503. Adjustment block; 6. Locking block; 601. Rotating shaft; 602. Opening and closing shaft; 603. Spring; 604. First engaging tooth; 605. Second engaging tooth; 7. Lubricating oil replenishment mechanism; 701. Oil tank; 702. Normally closed valve; 703. Oil replenishment pipe; 704. Hand-operated airbag; 8. Power input end; 9. Central shaft; 10. First clamping plate; 11. Second clamping plate; 12. Rope; 13. Hanging hole. Detailed Implementation
[0010] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0011] The embodiments of the present invention will now be described.
[0012] like Figure 1-6 As shown in the figure, this embodiment discloses a lightweight portable lifting device for small-batch power equipment hoisting operations in high-voltage line construction in the power industry. Its specific structure, assembly, and usage are as follows: Housing assembly: The first housing 1 and the second housing 2 are spliced together to form a sealed installation cavity. The pre-set hanging holes 13 on the second housing 2 are used for hanging and fixing the whole device.
[0013] Gear transmission assembly: After the pinion 3 and the gear 4 are meshed, they are installed together inside the mounting cavity to ensure smooth transmission without jamming.
[0014] Assembly of the adjusting locking mechanism 5: Fix the fixing block 501 to the outer side wall of the first housing 1, and rotate the flip handle 502 to the fixing block 501 through the rotating shaft, so that the adjusting block 503 inside the flip handle 502 extends into the mounting cavity. The locking block 6 is rotatably connected to the inner wall of the first housing 1 and the second housing 2 via the rotating shaft 601. The opening and closing shaft 602 and the spring 603 are installed on the locking block 6 to ensure that the opening and closing shaft 602 and the adjusting block 503 are in corresponding and compatible positions. One end of the spring 603 is fixed to the locking block 6, and the other end is fixed to the inner wall of the first housing 1. When the flip handle 502 is opened, the first engaging tooth 604 and the second engaging tooth 605 on the locking block 6 are separated from the small gear 3 and the large gear 4, respectively.
[0015] Lubricating oil replenishment mechanism 7 assembly: The oil tank 701 is fixed inside the mounting cavity. A normally closed valve 702 is installed at the oil outlet of the oil tank 701. One end of the oil replenishment pipe 703 is connected to the inside of the oil tank 701, and the other end extends to the outside of the mounting cavity and is sealed by a sealing cap. The hand-operated airbag 704 is connected to the inside of the oil tank 701, ensuring that squeezing the hand-operated airbag 704 can change the air pressure inside the oil tank 701.
[0016] Power input component assembly: The power input end 8 is installed through the first housing 1. One end of the power input end 8 located inside the mounting cavity is fixedly connected to the pinion 3, and the other end located outside the mounting cavity is used to be adapted to the electric drill sleeve.
[0017] Lifting execution component assembly: One end of the central shaft 9 is fixedly connected to the large gear 4, and the other end passes through the first clamping plate 10 and the second clamping plate 11 in sequence and is fixed to both. The first clamping plate 10 and the second clamping plate 11 have the same structure and are symmetrically arranged. The opposite end faces of the two are provided with anti-slip texture for hanging the rope 12 in a ring.
[0018] The working principle of this invention is as follows: When in use, the device is hung at a high place through the hanging hole 13. The operator drives the power input end 8 through the electric drill sleeve, so that the power input end 8 can drive the small gear 3 to rotate. The rotation of the small gear 3 drives the large gear 4 to rotate. The rotation of the large gear 4 will drive the first clamping plate 10 and the second clamping plate 11 to rotate through the central shaft 9. The rope 12 that needs to be hoisted is hung in a ring between the first clamping plate 10 and the second clamping plate 11, so that the rope can be raised and lowered to complete the hoisting of external equipment. Once the external equipment is hoisted to the designated height, the operator manually flips the handle 502 relative to the fixed block 501 to close it. At this time, the adjusting block 503 is released from the limit on the opening and closing shaft 602, and the locking block 6 will rotate and reset along the rotating shaft 601 under the action of the spring 603. After being fully reset, the first engaging tooth 604 and the second engaging tooth 605 of the locking block 6 will synchronously engage and restrict the teeth of the small gear 3 and the large gear 4, respectively, thus completing the dual restriction function. Meanwhile, when it is necessary to replenish the lubricating oil at the small gear 3 and the large gear 4, the staff manually squeezes the hand-operated air bag 704. At this time, the gas inside the hand-operated air bag 704 will be injected into the oil tank 701. Then, the lubricating oil inside the oil tank 701 will be pushed open by the gas and discharged. The discharged lubricating oil will flow to the tooth grooves of the large gear 4. With the next rotation of the large gear 4, some of the lubricating oil can be transferred to the small gear 3 to complete the overall lubrication effect. In summary, by adjusting the coordinated design of the locking mechanism 5 and the locking block 6, synchronous engagement and locking of the pinion 3 and the gear 4 are achieved, fundamentally solving the problems of equipment falling and mechanical impact caused by single locking or asynchronous locking in traditional devices. When the electric drill stops operating, after the flip handle 502 closes, the locking block 6 returns to its original position along the shaft 601 under the action of the spring 603. Its first engagement tooth 604 and second engagement tooth 605 can precisely engage the tooth grooves of the pinion 3 and the gear 4 respectively, forming a double locking restriction. This effectively prevents the gears from rotating relative to each other due to the weight of the hoisting equipment, completely eliminating the risk of accidental slippage or rapid fall of the equipment, and greatly ensuring the personal safety of construction personnel and the integrity of the hoisting equipment. At the same time, the synchronous locking mechanism avoids mechanical impact caused by asynchronous locking between gears, reduces gear wear, improves the stability and reliability of gear transmission, and extends the service life of the device. Through the coordinated design of the oil tank 701, normally closed valve 702, oil replenishment pipe 703 and hand-operated airbag 704, the operator does not need to disassemble the device. He only needs to manually squeeze the hand-operated airbag 704 to deliver the lubricating oil in the oil tank 701 to the tooth groove of the large gear 4 through the opening. Then, through gear meshing, the lubricating oil is evenly transferred to the surface of the small gear 3 to achieve full lubrication of the gear set. This design is not only easy to operate and allows for timely oil replenishment, but also enables precise control of lubricant usage, avoiding problems such as increased gear friction resistance and decreased torque transmission efficiency caused by insufficient oil replenishment, thus ensuring that the hoisting speed and accuracy remain stable. At the same time, it effectively prevents gear jamming and transmission failure caused by lubricant aging and wear, reducing the difficulty and cost of equipment maintenance and ensuring the continuity of construction progress.
[0019] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.
Claims
1. A lightweight portable lifting device, characterized in that, This includes the housing assembly, gear transmission assembly, adjustment and locking mechanism (5), lubricating oil replenishment mechanism (7), power input assembly, and hoisting execution assembly; The gear transmission assembly, the adjustment and locking mechanism (5), and the lubricating oil replenishment mechanism (7) are all assembled inside the housing assembly. The power input assembly is connected to the gear transmission assembly to provide hoisting power. The adjustment and locking mechanism (5) is adapted to the gear transmission assembly to achieve synchronous locking of the gears. The lubricating oil replenishment mechanism (7) is set to correspond to the gear transmission assembly to achieve gear lubrication replenishment. The hoisting execution assembly is connected to the gear transmission assembly to complete the equipment hoisting operation. The adjusting locking mechanism (5) includes an adjusting component for triggering the locking action and a locking component for achieving double locking. Under the control of the adjusting component, the locking component can engage with different gears of the gear transmission assembly to achieve synchronous limiting of the gear set and prevent the equipment from falling due to relative rotation of the gears during hoisting. The lubricating oil replenishment mechanism (7) includes an oil storage component, a control component, and a conveying component. The control component drives the lubricating oil in the oil storage component to flow to the gear transmission assembly through the conveying component. Lubrication replenishment can be completed without disassembling the device, ensuring the efficiency of gear transmission.
2. The portable lifting device according to claim 1, characterized in that: The housing assembly includes a first housing (1) and a second housing (2) that cooperate with each other. The first housing (1) and the second housing (2) enclose a mounting cavity for accommodating internal components. The second housing (2) has a hanging hole (13).
3. The portable lifting device according to claim 1, characterized in that: The gear transmission assembly includes a pinion (3) and a large gear (4). The pinion (3) is connected to the power input assembly, the large gear (4) meshes with the pinion (3) for transmission, and the large gear (4) is connected to the hoisting execution assembly.
4. The portable lifting device according to claim 3, characterized in that: The adjusting components of the adjusting locking mechanism (5) include a fixing block (501), a flip handle (502), and an adjusting block (503), wherein the fixing block (501) is fixed to the outside of the housing assembly; The flip handle (502) is rotatably connected to the fixing block (501), and an adjustment block (503) extending into the housing assembly is provided on the inner side of the flip handle (502). The locking component is a locking block (6), which is rotatably connected to the housing assembly via a rotating shaft (601). The locking block (6) is provided with an opening and closing shaft (602), a spring (603), a first engaging tooth (604), and a second engaging tooth (605). The opening and closing shaft (602) is adapted to the adjusting block (503), and the spring (603) is fixed between the locking block (6) and the housing assembly. The first engaging tooth (604) is adapted to the pinion (3), and the second engaging tooth (605) is adapted to the gear (4).
5. The portable lifting device according to claim 3, characterized in that: The oil storage component of the lubricating oil replenishment mechanism (7) is an oil tank (701), the control component is a hand-squeezed airbag (704), and the delivery component is an oil replenishment pipe (703). The oil tank (701) is fixed inside the housing assembly. The oil outlet of the oil tank (701) is provided with a normally closed valve (702). One end of the oil replenishment pipe (703) is connected to the oil tank (701), and the other end extends to the outside of the housing assembly. A sealing cap is threaded to its end. The hand-squeezed airbag (704) is connected to the inside of the oil tank (701).
6. The portable lifting device according to claim 1, characterized in that: The power input component is a power input end (8), which is installed through the housing assembly. One end of the power input end (8) is connected to the pinion (3), and the other end is used to be adapted to the drill sleeve.
7. The portable lifting device according to claim 3, characterized in that: The hoisting execution assembly includes a central shaft (9), a first clamping plate (10) and a second clamping plate (11). One end of the central shaft (9) is fixedly connected to a large gear (4), and the other end is fixedly connected to the first clamping plate (10) and the second clamping plate (11). The first clamping plate (10) and the second clamping plate (11) are used to hang a rope (12) in a ring.
8. The portable lifting device according to claim 5, characterized in that: The normally closed valve (702) is made of elastic sealing material and remains closed under natural conditions. It can be automatically opened when the internal air pressure of the oil tank (701) increases.
9. The portable lifting device according to claim 4, characterized in that: One end of the spring (603) is connected to the locking block (6), and the other end is fixed inside the housing assembly. After the flip handle (502) is opened, the first engaging tooth (604) and the second engaging tooth (605) remain separated from the pinion (3) and the gear (4) respectively.
10. The portable lifting device according to claim 7, characterized in that: The first clamping plate (10) and the second clamping plate (11) have the same structure and are symmetrically arranged, and the opposite end faces of the two are provided with anti-slip texture.