Pneumatic wire rope electric hoist

Abstract

The utility model discloses a pneumatic steel wire rope electric hoist, aims at solving the problem of uneven winding and insufficient safety braking of the existing electric hoist steel wire rope. It includes electric hoist and insurance unit, and insurance unit is fixed in electric hoist one side. The wire arrangement assembly is driven to move reciprocatingly along the axial direction through the gear transmission of the wire arrangement shaft and the winding shaft of electric hoist, makes the steel wire rope even winding outside the winding shaft, avoids the sudden drop of hoisting object and the abrasion of steel wire rope caused by uneven winding. When the electric hoist is out of control, the safety assembly uses centrifugal force to make the slide rod hit the knock lever, so that the clamping plate is separated, and the plug rod is inserted into the gear under the action of spring, realizes the emergency stop, greatly improves the safety of the device. The present application has the advantages of ingenious structure, effectively improves the working performance and safety factor of electric hoist, and is suitable for various industrial lifting operation scenes.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, and in particular to a pneumatic wire rope electric hoist. Background Technology

[0002] Electric hoists play a crucial role as commonly used lifting equipment in industrial production and various engineering operations. Among them, pneumatic wire rope electric hoists, which utilize compressed air as a power source, offer advantages such as good explosion-proof performance and suitability for flammable and explosive environments, leading to their widespread application in industries such as chemical, petroleum, and mining. However, existing pneumatic wire rope electric hoists still exhibit some problems that urgently need to be addressed during practical use.

[0003] On the one hand, the uniformity of wire rope winding is a significant issue. In traditional electric hoist structures, when the wire rope is wound on the reel, the lack of effective guiding and cable management devices easily leads to uneven winding. For example, during high-lift operations, as the number of lifts increases, the arrangement of the wire rope on the drum becomes increasingly chaotic. This not only prevents the effective increase in the number of winding layers, limiting the lifting height of the electric hoist, but also causes excessive local stress on the wire rope, accelerating wear and significantly shortening its service life. This not only increases equipment maintenance costs but also seriously affects the continuity and efficiency of production operations. More seriously, uneven wire rope winding can also lead to a dangerous situation where the lifted load suddenly drops during lifting, posing a significant threat to the lives of workers and production facilities. Therefore, there is an urgent need for an innovative technological solution to address these issues, improve the performance and safety of electric hoists, and meet the growing demands of industrial production. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model proposes a pneumatic wire rope electric hoist, which improves the working performance of the electric hoist.

[0005] To achieve the above objectives, this utility model provides the following solution: A pneumatic wire rope electric hoist includes an electric hoist and a safety unit. The safety unit is fixedly installed on one side of the electric hoist. The safety unit includes a cable management assembly and a safety assembly. The cable management assembly includes a cable management shaft. One end of the cable management shaft is rotatably connected to a fixing plate, and the other end of the cable management shaft is rotatably connected to a mounting plate. The mounting plate is rotatably connected to one end of the electric hoist's winding shaft. One end of the electric hoist's winding shaft passes through the mounting plate and is fixedly connected to a first gear. The other end of the cable management shaft passes through the mounting plate and is fixedly connected to a second gear. The first gear and the second gear are drively connected. A cable management sleeve is reciprocally screwed to the outside of the cable management shaft. The cable management sleeve is used to guide the winding of the wire rope. The safety assembly is disposed between the first gear and the second gear. The safety assembly is fixedly connected to the mounting plate.

[0006] Preferably, the safety component includes a pry bar, which is fixedly connected to the end face of the second gear. The pry bar is detachably connected to a safety element. The safety element includes a mounting box, which is fixedly mounted on the side of the mounting plate. A first spring is fixedly connected inside the mounting box, and a rod is fixedly connected to one end of the first spring. One end of the rod passes through the bottom surface of the mounting box and is slidably connected to the mounting box. The rod is disposed between the first gear and the second gear. A slot is provided on the side of the rod, and a retaining plate is engaged in the slot. The retaining plate passes through the mounting box and is detachably connected to the pry bar.

[0007] Preferably, the card plate has an arc-shaped structure, and a lever is fixedly connected to one end of the card plate. The lever is detachably connected to the lever component.

[0008] Preferably, the lever includes a mounting base, which is fixedly connected to the end face of the first gear. A sleeve is fixedly connected to one end of the mounting base, and a second spring is fixedly connected inside the sleeve. A sliding rod is fixedly connected to one end of the second spring, and the sliding rod slides in contact with the inner wall of the sleeve.

[0009] Preferably, the cable management shaft is a reciprocating lead screw with a bidirectional reciprocating spiral groove on its outer side, and a drive column is fixedly connected to the inner wall of the cable management sleeve, the drive column being drivenly connected to the cable management shaft.

[0010] Preferably, the first spring is in a compressed state, and the tension of the second spring is consistent with the weight of the slide rod.

[0011] Compared with the prior art, the present invention has the following advantages and technical effects: This invention utilizes a cable-guiding shaft to drive a cable-guiding sleeve to reciprocate along its axial direction. Simultaneously, the outer surface of the cable-guiding sleeve slides in contact with the wire rope. The reciprocating movement of the cable-guiding sleeve also drives the wire rope to reciprocate, ensuring the wire rope is evenly wound onto the outside of the electric hoist's reel. This prevents uneven winding that could cause sudden drops in the load or accelerate wire rope wear. Furthermore, if the electric hoist malfunctions and cannot control the lifting speed, a safety component can engage the first and second gears, achieving an emergency stop of the load and reducing the probability of danger, thus improving the safety of the device. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a side view of the three-dimensional structure of the present invention; Figure 2 This is a side view of the three-dimensional structure of the cable management sleeve; Figure 3 This is a side view three-dimensional structural diagram of the insurance component; Figure 4 This is a schematic diagram of the main structure of the dial component.

[0013] Among them, 1. Electric hoist; 2. Cable management shaft; 3. Mounting plate; 4. First gear; 5. Second gear; 6. Cable management sleeve; 7. Mounting box; 8. First spring; 9. Insert rod; 10. Slot; 11. Card plate; 12. Toggle lever; 13. Mounting base; 14. Sleeve; 15. Second spring; 16. Slide rod; 17. Drive column. Detailed Implementation

[0014] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0015] It should be noted that all components in the technical solution of this application require necessary additional facilities for water supply, oil supply, power supply, and gas supply for driving and / or control. Unless otherwise stated, they are assumed to be used and equipped with existing technology and no special explanation is required.

[0016] It should be noted that, in order to make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Depend on Figure 1-4The pneumatic wire rope electric hoist shown includes a hoist 1 and a safety unit. The safety unit is fixedly installed on one side of the hoist 1. The safety unit includes a cable management assembly and a safety component. The cable management assembly includes a cable management shaft 2. One end of the cable management shaft 2 is rotatably connected to a fixing plate, and the other end of the cable management shaft 2 is rotatably connected to a mounting plate 3. The mounting plate 3 is rotatably connected to one end of the winding shaft of the hoist 1. One end of the winding shaft of the hoist 1 passes through the mounting plate 3 and is fixedly connected to a first gear 4. The other end of the cable management shaft 2 passes through the mounting plate 3 and is fixedly connected to a second gear 5. The first gear 4 and the second gear 5 are connected in a transmission connection. A cable management sleeve 6 is reciprocally screwed to the outside of the cable management shaft 2. The cable management sleeve 6 is used to guide the winding of the wire rope. The safety component is disposed between the first gear 4 and the second gear 5. The safety component is fixedly connected to the mounting plate 3.

[0018] Furthermore, the outer side of the cable management sleeve 6 is provided with a groove for guiding the sliding of the wire rope.

[0019] Further optimization of the design includes a safety component comprising a pry bar, which is fixedly connected to the end face of the second gear 5. A safety element is detachably connected to the pry bar. The safety element includes a mounting box 7, which is fixedly mounted on the side of the mounting plate 3. A first spring 8 is fixedly connected inside the mounting box 7, and a rod 9 is fixedly connected to one end of the first spring 8. One end of the rod 9 penetrates the bottom surface of the mounting box 7 and is slidably connected to it. The rod 9 is positioned between the first gear 4 and the second gear 5. A slot 10 is provided on the side of the rod 9, and a locking plate 11 is engaged within the slot 10. The locking plate 11 penetrates the mounting box 7 and is detachably connected to the pry bar. The rod 9 is positioned between the first gear 4 and the second gear 5 and is limited and locked by the locking plate 11. During normal operation of the device, the rod 9 does not function. In the event of an accident, the locking plate 11 disengages from the slot 10, and the rod 9, under the pushing force of the first spring 8, inserts between the first gear 4 and the second gear 5. The locking action of the rod 9 stops the winding of the wire rope, thus preventing a dangerous situation.

[0020] In a further optimized design, the card plate 11 has an arc-shaped structure, with a lever 12 fixedly connected to one end of the card plate 11. The lever 12 is detachably connected to the lever component. The card plate 11 is arc-shaped, and the center of the arc is located on the axis of the cable management shaft 2. The lever 12 extends out of the mounting box 7 to facilitate the lever component's movement, thereby pulling out the card plate 11.

[0021] The scheme is further optimized. The component includes a mounting base 13, which is fixedly connected to the end face of the first gear 4. A sleeve 14 is fixedly connected to one end of the mounting base 13. A second spring 15 is fixedly connected inside the sleeve 14. A slide rod 16 is fixedly connected to one end of the second spring 15. The slide rod 16 slides in contact with the inner wall of the sleeve 14. One end of the sleeve 14 is set on the axis of the cable management shaft 2. The second spring 15 pulls the slide rod 16 to prevent the slide rod 16 from extending out of the sleeve 14 as the first gear 4 rotates. At the same time, the first spring 8 is in a compressed state, and the tension of the second spring 15 is consistent with the weight of the slide rod 16. This also ensures that when the electric hoist 1 is out of control, the rapid rotation of the first gear 4 will use centrifugal force to throw the slide rod 16 out. The thrown slide rod 16 will collide with the lever 12 and knock the clamping plate 11 out of the mounting box 7. Then the insertion rod 9 loses its jamming and is inserted between the first gear 4 and the second gear 5 under the action of the first spring 8, thereby stopping the winding shaft.

[0022] In a further optimized design, the cable management shaft 2 is a reciprocating lead screw with a bidirectional reciprocating spiral groove on its outer surface. A drive column 17 is fixedly connected to the inner wall of the cable management sleeve 6, and the drive column 17 is connected to the cable management shaft 2 for transmission. The drive column 17 is adapted to the spiral groove and can drive the cable management sleeve 6 to reciprocate along the spiral groove during the rotation of the cable management shaft 2.

[0023] The working process of this embodiment is as follows: The pneumatic wire rope electric hoist of the present invention mainly consists of an electric hoist 1 and a safety unit, with the safety unit securely installed on one side of the electric hoist 1. The cable management assembly includes a cable management shaft 2. One end of the shaft 2 is rotatably connected to a fixed plate via a bearing, and the other end is rotatably connected to a mounting plate 3 via a bearing. The mounting plate 3 is rotatably connected to one end of the winding shaft of the electric hoist 1. During the rotation of the cable management shaft 2, the drive column 17 can move along the spiral groove, thereby driving the cable management sleeve 6 to reciprocate along the axial direction of the shaft 2. At the same time, the outer surface of the cable management sleeve 6 is provided with a groove for sliding contact with and guiding the wire rope. When the reel of the electric hoist 1 rotates to wind up the wire rope, the reel drives the first gear 4 to rotate synchronously. Since the first gear 4 is connected to the second gear 5, the second gear 5 also rotates, which in turn drives the wire rope guide shaft 2 to rotate. During the rotation of the wire rope guide shaft 2, the wire rope guide sleeve 6 reciprocates along the axial direction of the wire rope guide shaft 2 through the cooperation of the drive column 17 and the spiral groove. At this time, the wire rope that slides in contact with the groove on the outer side of the wire rope guide sleeve 6 will be evenly wound up on the outside of the reel as the wire rope guide sleeve 6 reciprocates, avoiding the problem of uneven winding of the wire rope and effectively preventing the sudden drop of the hoisted object and excessive wear of the wire rope. Under normal operating conditions, the first spring 8 is in a compressed state, and the tension of the second spring 15 is balanced with the gravity of the slide rod 16, so that the slide rod 16 will not extend out of the sleeve 14. The insertion rod 9 is limited and locked by the clamping plate 11, so it will not affect the rotation of the first gear 4 and the second gear 5. When the electric hoist 1 loses control of its lifting speed due to mechanical failure or other reasons, the first gear 4 will rotate rapidly. At this time, the first gear 4 uses centrifugal force to throw the slide rod 16 out of the sleeve 14. The thrown slide rod 16 will collide with the lever 12 and knock the locking plate 11 out of the slot 10 and the mounting box 7. After the locking plate 11 is disengaged, the insertion rod 9, under the pushing force of the first spring 8, quickly inserts between the first gear 4 and the second gear 5. Through the locking action of the insertion rod 9, the rotation of the first gear 4 and the second gear 5 is prevented, thereby stopping the wire rope winding, effectively reducing the probability of danger and improving the safety of the device.

[0024] The above are merely preferred embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pneumatic wire rope electric hoist, comprising an electric hoist (1) and a safety unit, wherein the safety unit is fixedly installed on one side of the electric hoist (1), characterized in that, The safety unit includes a cable management assembly and a safety assembly. The cable management assembly includes a cable management shaft (2), one end of which is rotatably connected to a fixing plate, and the other end of which is rotatably connected to a mounting plate (3). The mounting plate (3) is rotatably connected to one end of the winding shaft of the electric hoist (1). One end of the winding shaft of the electric hoist (1) passes through the mounting plate (3) and is fixedly connected to a first gear (4). The other end of the cable management shaft (2) passes through the mounting plate (3) and is fixedly connected to a second gear (5). The first gear (4) and the second gear (5) are connected in a transmission connection. A cable management sleeve (6) is reciprocally screwed to the outside of the cable management shaft (2). The cable management sleeve (6) is used to guide the winding of the wire rope. The safety assembly is located between the first gear (4) and the second gear (5). The safety assembly is fixedly connected to the mounting plate (3).

2. The pneumatic wire rope electric hoist according to claim 1, characterized in that: The safety component includes a pry bar, which is fixedly connected to the end face of the second gear (5). The pry bar is detachably connected to a safety component. The safety component includes a mounting box (7), which is fixedly installed on the side of the mounting plate (3). A first spring (8) is fixedly connected inside the mounting box (7). One end of the first spring (8) is fixedly connected to a plug rod (9). One end of the plug rod (9) passes through the bottom surface of the mounting box (7) and is slidably connected to the mounting box (7). The plug rod (9) is located between the first gear (4) and the second gear (5). A slot (10) is provided on the side of the plug rod (9). A locking plate (11) is engaged in the slot (10). The locking plate (11) passes through the mounting box (7) and is detachably connected to the pry bar.

3. The pneumatic wire rope electric hoist according to claim 2, characterized in that: The card plate (11) has an arc-shaped structure, and a lever (12) is fixedly connected to one end of the card plate (11). The lever (12) is detachably connected to the lever.

4. The pneumatic wire rope electric hoist according to claim 3, characterized in that: The lever includes a mounting base (13), which is fixedly connected to the end face of the first gear (4). A sleeve (14) is fixedly connected to one end of the mounting base (13), and a second spring (15) is fixedly connected inside the sleeve (14). A slide rod (16) is fixedly connected to one end of the second spring (15), and the slide rod (16) slides in contact with the inner wall of the sleeve (14).

5. The pneumatic wire rope electric hoist according to claim 1, characterized in that: The thread-arranging shaft (2) is a reciprocating screw with a bidirectional reciprocating spiral groove on its outer side. The inner wall of the thread-arranging sleeve (6) is fixedly connected to a drive column (17), and the drive column (17) is connected to the thread-arranging shaft (2) in a transmission connection.

6. The pneumatic wire rope electric hoist according to claim 4, characterized in that: The first spring (8) is in a compressed state, and the tension of the second spring (15) is consistent with the gravity of the slide rod (16).

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