A lifting device for mechanical engineering
By combining hydraulic support and casters with anti-fall plates and an automatic oiling system, the problems of insufficient lubrication and cushioning in existing hoisting devices are solved, thus improving the safety and efficiency of the hoisting device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GUANGDONG OCEAN UNIVERSITY
- Filing Date
- 2021-09-01
- Publication Date
- 2026-06-19
AI Technical Summary
Existing hoisting devices cannot automatically apply lubricant according to the condition of the hoisted goods, and lack buffer protection when the wire rope breaks, resulting in low safety and efficiency.
A hoisting device was designed, comprising a hydraulic support column, casters, a transmission box, a rotating motor, a hoisting motor, a wire rope, a fall arrestor, and an oiling system. The combination of the hydraulic support column and casters enables flexible support and transportation of the device. The fall arrestor provides cushioning in the event of wire rope breakage, and the oiling system automatically applies lubricating oil according to the weight of the cargo.
It improves the safety and efficiency of hoisting devices, saves lubricating oil with its automatic oiling system, and provides cushioning protection with its anti-fall plate, ensuring the safety of goods. It has a wide range of applications.
Smart Images
Figure CN113879989B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hoisting equipment technology, specifically a hoisting equipment for electromechanical engineering. Background Technology
[0002] Mechanical and electrical engineering encompasses electrical engineering technology, automatic control and instrumentation, water supply and drainage, mechanical equipment installation, container installation, heating, ventilation and air conditioning engineering, building intelligent engineering, fire protection engineering, and equipment and pipeline corrosion prevention and insulation technology, among others, with a very wide range of applications. In the production process of mechanical and electrical engineering, hoisting devices are often used to lift goods. Hoisting refers to the general term for installing and positioning equipment using cranes or lifting mechanisms. During inspection or maintenance, various hoisting tools are used to lift equipment, workpieces, tools, materials, etc., causing them to change position. To ensure smooth sliding and cooling of the wire rope, lubricating oil needs to be applied to the wire rope. Existing hoisting devices have simple designs, are inconvenient to use, and cannot meet people's needs.
[0003] To address the aforementioned issues, Chinese Patent (Patent Publication No.: CN110937523B) discloses a hoisting device for electromechanical engineering, comprising an oil tank and a baffle. During the hoisting process, the friction between the wire rope and the friction plate is utilized. When the surface of the wire rope is lacking oil, the friction is greater, causing the wire rope to move and open the oil tank opening. Oil drips from the tank through the oil injection pipe onto the oiling roller for oiling. Simultaneously, a C-shaped plate, a first contact point, and a second contact point are provided. When the hoisted goods are being lifted, a tension spring is extended. When the weight of the goods exceeds the limit, the spring stretches, causing the first and second contact points to come into contact, activating the circuit and triggering an alarm light to alert the worker that the goods are overweight, thus improving the safety of goods hoisting. However, this device can only apply oil when the wire rope is dry, causing increased friction between it and the baffle. It cannot apply lubricating oil to the wire rope for lubrication and cooling based on the condition of the goods being hoisted. Furthermore, this device does not provide cushioning when the wire rope breaks accidentally and the goods fall. Therefore, a hoisting device is needed that automatically applies lubricating oil to the wire rope based on the condition of the goods being hoisted and provides cushioning for the falling goods when the wire rope breaks accidentally. Summary of the Invention
[0004] The present invention aims to provide a hoisting device for electromechanical engineering, in order to solve the problems of existing technology which cannot apply lubricating oil to the wire rope according to the hoisting conditions and which does not have a buffering effect on the falling of goods when the wire rope breaks accidentally.
[0005] To achieve the above objectives, the present invention provides the following technical solution:
[0006] The basic technical solution provided by this invention is: a hoisting device for electromechanical engineering, comprising a base plate, a hydraulic support column and casters connected to the lower side of the base plate, a pusher and a transmission box connected to the upper side of the base plate, a rotating motor and a rotating seat connected to the transmission box, the rotating seat being connected to the output shaft of the rotating motor, a hoisting motor and a hoisting boom connected to the rotating seat, a guide wheel rotatably connected to the hoisting boom, a wire rope connected to the hoisting motor, the wire rope abutting against the guide wheel, a hook connected to the free end of the wire rope, a first connecting rod and a second connecting rod connected to the hoisting boom, an oiling tank connected to the second connecting rod, two fall arresters hinged to the lower side of the oiling tank, the two fall arresters being mirror images of the oiling tank, the two fall arresters being intersected in a wedge shape, a wire rope being threaded between the two fall arresters, and two first springs connected to the first connecting rod, the free ends of the two first springs respectively. The device is connected to two fall arresting plates, each with a collar on its upper side. A wire rope slides through a slider, which is connected to a pull rope. An oiling tank is rotatably connected to a connecting wheel, and the pull rope passes over the connecting wheel and connects to both collars. The oiling tank is also connected to a lubricating oil tank and an oiling roller. The lubricating oil tank is connected to an oil outlet pipe, the outlet of which is located above the oiling roller. The wire rope is tangent to the oiling roller. The oil outlet pipe is connected to a rotary switch, the connecting arm of which is rotatably connected to the hoisting boom. The hoisting boom is also connected to a guide cylinder and a second spring, the second spring being located inside the guide cylinder. The free end of the second spring is connected to a pressing cylinder, which is slidably fitted onto the outside of the guide cylinder. The upper end of the pressing cylinder abuts against the wire rope, and a pressing rod is connected to the pressing cylinder. The free end of the pressing rod abuts against the rotating arm of the rotary switch.
[0007] The principle of the basic technical solution: When using the transfer and hoisting device, the hydraulic support column is retracted, and the casters contact the ground, pushing the handle to transfer the entire device under the action of the casters. When using the hoisting device, the hydraulic support column is pulled out, the casters leave the ground, and the hydraulic support column contacts the ground to support the entire device. The rotating motor is turned on to drive the rotating seat to adjust the hoisting angle. The hook is used to hook the goods, and the hoisting motor retracts and extends the wire rope to hoist the goods. Specifically, when the wire rope hoists the goods, the wire rope is taut, and one end of the rope slides... The block connects to the wire rope, and the other end of the rope passes over the rotating wheel and connects to the collar on the two fall arresters. The fall arresters are hinged to the oiling tank, and their lower ends are connected to the first spring. When the wire rope is taut, the spring is in a stretched state. The gap between the two wedge-shaped fall arresters is relatively large, allowing the wire rope to slide normally through this gap, facilitating the hoisting motor's control over the wire rope for lifting goods. When the wire rope breaks accidentally, it is in a free state, and the rope loses the tension on the collar along with the pull of the block. The fall arresters then rotate under the action of the first spring. Two wedge-shaped anti-fall plates interlock, clamping the steel wire rope to cushion the falling cargo and prevent it from accelerating downwards under gravity, thus preventing accidental falls. Additionally, when the steel wire rope is taut, the pressure cylinder is pressed downwards by the rope, causing the cylinder to move downwards and driving the pressure rod downwards. This downward movement of the pressure rod presses the connecting arm of the rotary switch. Since the rotary switch is rotatably connected to the hoisting boom, pressing down on the connecting arm causes the rotary switch to rotate upwards around the connecting axis against gravity. When the wire rope is in motion, the oil outlet pipe is opened, allowing the lubricating oil in the lubrication tank to flow onto the oiling roller. Since the wire rope is tangential to the oiling roller, the moving wire rope contacts the oiling roller to apply oil, achieving lubrication and cooling. When the wire rope breaks or is no longer in contact with the hoisted goods, the wire rope is released from tension and is in a natural state. The force exerted by the wire rope on the pressing cylinder is small, and the pressing cylinder moves upward under the action of the second spring. The pressing rod releases the pressure on the rotating switch connecting arm, and the rotating switch rotates downward around the connecting axis with the hoisting cantilever under the action of gravity, closing the oil outlet pipe and canceling the oiling of the wire rope.
[0008] The beneficial effects of the basic technical solution are:
[0009] 1. The bottom of the base plate is equipped with casters and hydraulic support rods. When hoisting goods, the entire device is relatively heavy. The hydraulic support rods are used to support the device. The hydraulic support rods have a good support effect, can be extended and retracted, and have a wide range of applications. When not hoisting goods, the entire device is relatively light. The casters are used to support the device or to transfer and hoisting devices, which facilitates the transfer of the entire device. The entire device is safe and reliable to use.
[0010] 2. When the wire rope used to hoist the goods breaks, the two anti-fall plates clamp the wire rope to a certain extent, which cushions the falling goods, helps to prevent the goods from being damaged, prolongs the time the goods fall, and greatly improves the safety when using this device.
[0011] 3. When hoisting goods with wire rope, the oil outlet pipe of the lubricating oil tank is opened, and the wire rope is coated with oil using an oiling roller to achieve lubrication and cooling of the wire rope, ensuring the smoothness of hoisting goods. The heavier the weight of the goods being hoisted, the more the oil outlet pipe is opened, and the more oil is applied to the wire rope. Conversely, the amount of oil applied is relatively reduced, ensuring the oiling effect of the wire rope while saving the use of lubricating oil.
[0012] 4. The entire device is simple and convenient to use. It automatically cushions the falling goods and adjusts the amount of oil applied according to the weight of the goods, without the need for manual operation, which is conducive to its widespread application.
[0013] Preferably, both of the fall arresting plates are arc-shaped, and both of the fall arresting plates are intermittently provided with clamping protrusions, which are arranged in a cooperative manner.
[0014] With the above configuration, the arc-shaped fall arrestor plate is equipped with clamping protrusions. When two fall arrestor plates are clamped together, the clamping protrusions of the two fall arrestor plates can interlock with each other, which increases the clamping effect on the wire rope.
[0015] Preferably, a plurality of anti-fall balls are placed between the two anti-fall plates.
[0016] With the above setup, when the wire rope is still sliding downwards under the condition that the two fall arresters have a certain clamping effect on the wire rope, the friction between the wire rope and the fall arrester balls causes multiple fall arrester balls to move toward the wedge-shaped space between the two fall arresters, reducing the gap between the two fall arresters and further improving the clamping effect on the wire rope.
[0017] Preferably, the rotating arm of the rotary switch is provided with an anti-detachment protrusion.
[0018] With the above settings, when the pressing rod presses down on the rotating arm of the rotary switch, it prevents the pressing rod from slipping off the rotating arm, thus ensuring the functionality of the device.
[0019] Preferably, a positioning post and a protective plate are also connected to the lower side of the base plate. The positioning post is connected to the base plate by locking bolts, and the protective plate is used to cover the positioning post.
[0020] With the above settings, for muddy or slippery surfaces, rotating the positioning column will insert it into the ground, preventing the device from slipping when lifting goods, ensuring the safety of the goods being lifted, and expanding the applicability of the device. When the positioning column is not needed, rotating the positioning column will allow the protective plate to cover it, preventing accidental scratches, cuts, and bumps to personnel.
[0021] Preferably, the hoisting boom is a telescopic boom, the rotating seat is connected to a telescopic support rod, and the free end of the telescopic support rod is ball-jointed with the hoisting boom.
[0022] With the above configuration, the lifting boom is a telescopic boom, which increases the applicability of lifting goods, and the telescopic support rod ensures the safety of lifting goods.
[0023] Preferably, the hook is rotatably connected to a locking device, which rotates radially along the hook.
[0024] With the above settings, existing locks generally only rotate along the axial direction of the hook. When the rope is thick, the lock will not only occupy the space of the hook, but also fail to protect the rope. However, the lock rotates along the radial direction of the hook. When the rope is hooked, the lock is rotated to make it outside the hook. After the rope is hooked, it rotates back to protect the rope. The effect is better and the safety is higher. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the structure of a hoisting device for electromechanical engineering according to the present invention;
[0026] Figure 2 for Figure 1 A partially enlarged sectional view at point A in the middle;
[0027] Figure 3 for Figure 1 Enlarged section view at point B;
[0028] Figure 4 for Figure 1 A magnified view of a portion of point C in the middle;
[0029] Figure 5 This is a schematic diagram of the structure of a fall arrestor plate for a hoisting device used in electromechanical engineering according to the present invention;
[0030] The names of the corresponding labels in the attached diagram are:
[0031] 1. Base plate; 2. Hydraulic support column; 3. Casters; 4. Positioning column; 5. Push handle; 6. Transmission box; 7. Rotary motor; 8. Rotating seat; 9. Hoisting motor; 10. Wire rope; 11. Hoisting cantilever; 12. Guide wheel; 13. First connecting rod; 14. Oil tank; 15. First spring; 16. Fall arrestor plate; 17. Collar; 18. Connecting wheel; 19. Pull rope; 20. Slider; 21. Oil roller; 22. Lubricating oil tank; 23. Oil outlet pipe; 24. Rotary switch; 25. Guide cylinder; 26. Second spring; 27. Pressing cylinder; 28. Pressing rod; 29. Fall arrestor ball; 30. Hook; 31. Lock; 32. Telescopic support rod; 33. Protective plate; 34. Detailed Implementation
[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments:
[0033] like Figures 1 to 5As shown, a hoisting device for electromechanical engineering includes a base plate 1. A hydraulic support column 2, casters 3, and a positioning column 4 are bolted to the lower side of the base plate 1. A protective plate 34 is also welded to the lower side of the base plate 1 to shield the positioning column 4. A pusher 5 and a transmission box 6 are bolted to the upper side of the base plate 1. A rotary motor 7 is bolted to the transmission box 6. A rotating seat 8 is rotatably connected to the upper side of the transmission box 6 via a bearing. The rotating seat 8 is keyed to the output shaft of the rotary motor 7. A hoisting motor 9, a hoisting boom 11, and a telescopic support rod 33 are bolted to the rotating seat 8. The hoisting boom 11 is a telescopic boom. The upper end of the telescopic support rod 33 is ball-jointed to the lower side of the hoisting boom 11. The uppermost end of the hoisting boom 11 is rotatably connected via a bearing. A guide wheel 12 is connected to a hoisting motor 9, which is connected to a wire rope 10. The wire rope 10 abuts against the guide wheel 12. A hook 31 is connected to the free end of the wire rope 10. A locking lock 32 is rotatably connected to the hook 31. The locking lock 32 rotates radially along the hook 31. A first connecting rod 13 and a second connecting rod 14 are fixedly welded to the lower side of the upper end of the hoisting boom 11. An oiling tank 15 is fixedly welded to the second connecting rod 14. Fall arresting plates 17 are hinged to the left and right ends of the lower side of the oiling tank 15. The fall arresting plates 17 are arc-shaped and integrally formed with three clamping protrusions. The three clamping protrusions are intermittently arranged. Two fall arresting plates 17 are mirror images of the oiling tank 15 and are arranged in a wedge shape with each other. Multiple fall arresting balls 30 are placed between the two fall arresting plates 17. A steel wire rope 10 is threaded between two fall arresting plates 17. First springs 16 are fixedly welded to the left and right sides of the upper end of the first connecting rod 13. The upper ends of the two first springs 16 are fixedly welded to the lower ends of the two fall arresting plates 17. A collar 18 is fixedly welded to the upper side of each of the two fall arresting plates 17. A slider 21 is slidably threaded through the steel wire rope 10. A pull rope 20 is sleeved on the slider 21. A connecting wheel 19 is rotatably connected to the outer side of the oiling tank 15 via a bearing. The pull rope 20 passes over the connecting wheel 19 and simultaneously engages with the two collars 18. A lubricating oil tank 23 is fixedly welded to the upper side of the oiling tank 15. The lubricating oil tank 23 is connected to an oil outlet pipe 24. Two oiling rollers 22 are connected to the inner side of the oiling tank 15. The oil outlet of the oil outlet pipe 24 is located above the side oiling rollers 22. A steel wire rope 10 is positioned between two oiling rollers 22, and the steel wire rope 10 is tangent to both oiling rollers 22. An oil outlet pipe 24 is connected to a rotary switch 25. The connecting arm of the rotary switch 25 is rotatably connected to the hoisting cantilever 11 via a rotating shaft. A guide cylinder 26 and a second spring 27 are fixedly welded to the upper side of the upper end of the hoisting cantilever 11. The second spring 27 is located inside the guide cylinder 26. A pressing cylinder 28 is fixedly welded to the upper end of the second spring 27. The pressing cylinder 28 is slidably sleeved on the outside of the guide cylinder 26. The upper end of the pressing cylinder 28 abuts against the steel wire rope 10. A pressing rod 29 is fixedly welded to the middle of the pressing cylinder 28. The lower end of the pressing rod 29 abuts against the rotating arm of the rotary switch 25. An anti-detachment protrusion is integrally formed on the right end of the rotating arm of the rotary switch 25.
[0034] The specific implementation process is as follows:
[0035] When the Honjo hoisting device is needed, push the entire device to the designated position using the hand pusher 5. Then, extend the hydraulic support column 2, lifting the casters 3 off the ground. Use the hydraulic support column 2 to support the entire hoisting device. During this process, you can optionally loosen the locking bolt clockwise to remove the positioning column 4 from the protective plate 34 and vertically insert the positioning column 4 into the ground to further improve the stability of the device. Rotate the locking lock 32 to attach the rope binding the goods to the hook 31. After attaching the rope, rotate the locking lock 32 to cover it, preventing the rope from accidentally slipping off during hoisting. Then, the rotating motor 7 and the hoisting motor 9 are started to hoist the goods. During the hoisting process, the wire rope 10 is taut while hoisting the goods, and the first spring 16 is in a stretched state under the action of the pull rope 20. There is a certain gap between the two arc-shaped fall arresters 17, and the wire rope 10 can slide freely between the two fall arresters 17. When the wire rope 10 hoisting the goods accidentally breaks, the wire rope 10 releases the force on the pull rope 20, and the pull rope 20 releases the tension on the fall arresters 17. The two fall arresters 17 then collapse under the action of the first spring 16. As the two fall arrestor plates 17 rotate, their fall arrestor protrusions interlock, reducing the frictional resistance of the steel wire rope 10 sliding downward relative to the fall arrestor plates 17. The fall arrestor ball 30 also moves towards reducing the gap between the two fall arrestor plates 17 under the action of the steel wire rope 10, increasing the frictional resistance to the steel wire rope 10 and achieving a buffering effect on the falling goods. It can even prevent the steel wire rope 10 from continuing to slide downward, thus preventing the goods from falling accidentally. Additionally, when the steel wire rope 10 is carrying goods, it is taut, and the steel wire rope 10 exerts pressure on the pressing cylinder 28. Under downward pressure, the second spring 27 is compressed, and the pressing rod 29 presses the connecting arm of the rotary switch 25 to open the oil outlet pipe 24. The oiling roller 22 is used to achieve the oiling effect on the wire rope 10. When no goods are being hoisted, the wire rope 10 is in a natural state and cannot apply pressure to the pressing cylinder 28. The pressing cylinder 28 moves upward under the action of the second spring 27, so that the pressing rod 29 cancels the pressing of the connecting arm of the rotary switch 25. Under the action of gravity, the rotary switch 25 closes the oil outlet pipe 24 and cancels the oiling of the wire rope 10.
[0036] The above descriptions are merely embodiments of the present invention, and common knowledge regarding specific technical solutions or characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.
Claims
1. A hoisting device for electromechanical engineering, characterized in that: Includes a base plate (1), with a hydraulic support column (2) and casters (3) connected to the lower side of the base plate (1). A pusher (5) and a transmission box (6) are connected to the upper side of the base plate (1). The transmission box (6) is connected to a rotating motor (7) and a rotating seat (8). The rotating seat (8) is connected to the output shaft of the rotating motor (7). The rotating seat (8) is connected to a hoisting motor (9) and a hoisting boom (11). The hoisting boom (11) is rotatably connected to a guide wheel (12). The hoisting motor (9) is connected to a wire rope (10), which abuts against the guide wheel (12). The free end of the wire rope (10) is connected to... The hook (31) and the hoisting boom (11) are also connected to a first link (13) and a second link (14). The second link (14) is connected to an oiling tank (15). Two fall arresting plates (17) are hinged to the lower side of the oiling tank (15). The two fall arresting plates (17) are mirror images of the oiling tank (15) and are arranged in a wedge shape with each other. The wire rope (10) is threaded between the two fall arresting plates (17). The first link (13) is connected to two first springs (16). The free ends of the two first springs (16) are respectively connected to the two fall arresting plates (17). 17) is connected to a collar (18) on its upper side. The wire rope (10) slides through a slider (21). The slider (21) is connected to a pull rope (20). The oiling tank (15) is rotatably connected to a connecting wheel (19). The pull rope (20) passes around the connecting wheel (19) and is connected to both collars (18). The oiling tank (15) is also connected to a lubricating oil tank (23) and an oiling roller (22). The lubricating oil tank (23) is connected to an oil outlet pipe (24). The oil outlet of the oil outlet pipe (24) is located above the oiling roller (22). The wire rope (10) is tangent to the oiling roller (22). The oil outlet pipe (24) A rotary switch (25) is connected, and the connecting arm of the rotary switch (25) is rotatably connected to the hoisting cantilever (11). The hoisting cantilever (11) is also connected to a guide cylinder (26) and a second spring (27). The second spring (27) is located inside the guide cylinder (26). The free end of the second spring (27) is connected to a pressing cylinder (28). The pressing cylinder (28) is slidably sleeved on the outside of the guide cylinder (26). The upper end of the pressing cylinder (28) abuts against the wire rope (10). The pressing cylinder is connected to a pressing rod (29). The free end of the pressing rod (29) abuts against the rotating arm of the rotary switch (25).
2. A hoisting device for electromechanical engineering according to claim 1, characterized in that: Both of the aforementioned fall arresting plates (17) are arc-shaped, and both of the aforementioned fall arresting plates (17) are intermittently provided with clamping protrusions, and the clamping protrusions of the two aforementioned fall arresting plates (17) are configured to cooperate.
3. A hoisting device for electromechanical engineering according to claim 2, characterized in that: Multiple anti-fall balls (30) are placed between the two anti-fall plates (17).
4. The hoist of claim 1, wherein: The rotating arm of the rotary switch (25) is provided with an anti-detachment protrusion.
5. The hoist of claim 1, wherein: The lower side of the base plate (1) is also connected to a positioning post (4) and a protective plate (34). The positioning post (4) is connected to the base plate (1) by a locking bolt, and the protective plate (34) is used to cover the positioning post (4).
6. The hoist of claim 1, wherein: The hoisting cantilever (11) is a telescopic arm, and the rotating seat (8) is connected to a telescopic support rod (33). The free end of the telescopic support rod (33) is ball-jointed with the hoisting cantilever (11).
7. The hoist of claim 1, wherein: The hook (31) is rotatably connected to a locking device (32), which rotates radially along the hook (31).