A plant safety hoisting system

Abstract

This invention discloses a safe hoisting system for factory buildings, belonging to the field of construction technology. The system includes baffles at both ends of a crossbeam. The crane comprises a body with a recessed groove on its top surface. Drive wheels are rotatably mounted on both sides of the groove. Drive protrusions are located on the support surfaces on both sides of the crossbeam, positioned along the movement lines of the drive wheels. When the crane moves to the end of the crossbeam, the drive wheels contact the drive protrusions. Slots are opened at both ends of the body, each containing an airbag. Air cylinders are fixedly connected to the ends of the airbags. A rotating wheel is coaxially mounted at the ends of the two air cylinders at both ends of the body. Threaded posts are coaxially mounted on both sides of the rotating wheel, with threaded sealing plates connected to the posts. The sealing plates are movable within the air cylinders. The drive wheels drive the rotating wheels to rotate. The airbag-type buffer ensures a soft impact and minimal rebound distance at the edge of the crossbeam. Furthermore, with the presence of an anti-collision structure, the crane's overall structure can be retracted, improving its tightness.

Description

Technical Field

[0001] This invention belongs to the field of building construction technology, and specifically relates to a safe hoisting system for factory buildings. Background Technology

[0002] Factory roof truss cranes are a type of equipment used in large production plants to facilitate the transportation of heavy objects such as solid waste and products. They consist of longitudinal and transverse tracks built on the roof and cranes that move along the tracks. The cranes can move longitudinally and transversely along the tracks and can also move the hooks up and down to transfer heavy objects. This equipment saves manpower and improves production efficiency.

[0003] Traditional crane systems typically consist of multiple longitudinal rails, with a transverse rail running parallel to these longitudinal rails. The movable crane is positioned on this transverse rail. The crane's movement on the transverse rail is subject to ground traction. During lifting operations, the crane experiences stress and high speeds, leading to collisions and damage when it reaches the end of the transverse rail. Existing crane anti-collision structures often employ spring-loaded shock absorbers. These require spring-loaded stops at both ends of the crane's movement, resulting in hard impacts between these stops and the ends of the crossbeam, causing wear and tear on the crossbeam ends over time. Furthermore, the spring-loaded structure rebounds significantly after a collision, causing the crane to bounce back in the opposite direction, making lifting operations at the crane's edges difficult. Finally, the spring-loaded structure requires a long extension buffer, increasing the overall crane size and hindering lifting operations at the crossbeam edges. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a safe hoisting system for factory buildings, which enables the crane to have a soft impact at the edge of the crossbeam with a small rebound distance, and to retract the overall structure of the crane with an anti-collision structure, thereby improving the tightness and safety of the crane.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This invention includes several longitudinal beams fixed to a roof, and a horizontal beam that moves parallel to these longitudinal beams. The horizontal beam has an inverted T-shaped cross-section. A crane is movable on the horizontal beam, and baffles are provided at both ends of the horizontal beam. The crane includes a vehicle body, and a groove is recessed on the top surface of the vehicle body. Drive wheels are rotatably mounted on both sides of the groove. Drive protrusions are provided on the support surfaces on both sides of the horizontal beam, and the drive protrusions are located on the movement lines of the drive wheels. When the crane moves to the end of the horizontal beam, the drive wheels contact the drive protrusions. Slots are opened at both ends of the vehicle body, and airbags are provided in the slots. Air cylinders are fixed to the ends of the airbags. A rotating wheel is coaxially mounted at the ends of the two air cylinders at both ends of the vehicle body. Threaded posts are coaxially fixed on both sides of the rotating wheel, and sealing plates are threadedly connected to the threaded posts. The sealing plates are movable within the air cylinders, and the drive wheels drive the rotating wheels to rotate.

[0007] Furthermore, at least two support rollers are rotatably provided on both sides of the groove, and the support rollers are respectively rolled on the support surfaces on both sides of the crossbeam; the diameter of the drive wheel is smaller than that of the support rollers, and the support rollers and the drive wheel are parallel to but do not overlap along the movement line of the crossbeam.

[0008] Furthermore, the rotating wheel is coaxially provided with bevel teeth, and a bevel gear meshes with the rotating wheel inside the vehicle body. A spur gear is coaxially fixed to the bevel gear. The axle of the drive wheel extends into the vehicle body and is coaxially fixed with a drive tooth, which meshes with the spur gear.

[0009] Furthermore, a telescopic shell assembly is slidably provided in the settling tank. The telescopic shell assembly includes several sliding shells that slide against each other. The several sliding shells overlap inward, and the innermost sliding shell's inner surface is bonded to the airbag end.

[0010] Furthermore, a vent is provided in the middle section of the air cylinder. After the sealing plate moves from the outer end to the inner end of the air cylinder and passes through the vent, the airbag communicates with the outside through the vent.

[0011] Furthermore, the end of the drive protrusion facing the crane is chamfered.

[0012] Furthermore, both the drive wheel and the drive protrusion are wrapped with a layer of anti-slip rubber.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention relates to a factory safety hoisting system. The crane moves along a crossbeam. When the crane reaches the end of the crossbeam, the drive wheel engages with a drive protrusion. The relative movement between the crane and the drive protrusion causes the drive wheel to rotate. This rotation of the drive wheel causes the threaded posts at both ends of the drive wheel to rotate. The rotation of the threaded posts causes the sealing plate to move within the air cylinder. The sealing plate compresses the volume inside the air cylinder, inflating the airbag. The airbag extends from the crane's recess and remains inflated. When the crane reaches the end of the crossbeam, the airbag contacts the baffle. To achieve a buffering effect, the crane makes a soft collision with the baffle at the edge of the crossbeam. The airbag itself contracts and deforms to dissipate the impact force, preventing the crane from rebounding and ensuring that the crane can work at the edge. In addition, the airbag inflates and extends when the crane approaches the end of the crossbeam and retracts when it leaves the end of the crossbeam, ensuring the crane's tightness and reducing its overall size. The damping generated by the airbag during inflation reacts to the drive wheel through the sealing plate and gear transmission, giving the crane a braking effect at the edge of the crossbeam, slowing down the crane's movement and reducing the collision force.

[0015] Other advantages, objectives, and features of the invention will be set forth in the following description and will be apparent to those skilled in the art in some respects, or may be learned by practice of the invention. The objectives and other advantages of the invention can be realized and obtained through the following description. Attached Figure Description

[0016] To make the objectives, technical solutions, and beneficial effects of this invention clearer, the following figures are provided for illustration:

[0017] Figure 1 This is a schematic diagram of the overall structure of the factory safety hoisting system according to an embodiment of the present invention;

[0018] Figure 2 This is a top view of the factory safety hoisting system according to an embodiment of the present invention at the crane location;

[0019] Figure 3 This is a schematic diagram of the internal structure of the crane according to an embodiment of the present invention;

[0020] Figure 4 This is a cross-sectional view of the crane at the air cylinder according to an embodiment of the present invention;

[0021] Figure 5 This is a detailed schematic diagram of the airbag in an embodiment of the present invention;

[0022] The following are the markings in the attached diagram: 1. Crossbeam; 11. Baffle; 12. Drive protrusion; 2. Crane; 21. Car body; 211. Slide groove; 212. Settling groove; 22. Drive wheel; 231. Airbag; 232. Air cylinder; 2321. Vent hole; 233. Sealing plate; 241. Rotary wheel; 242. Threaded column; 25. Support roller; 261. Bevel gear; 262. Spur gear; 263. Drive gear; 27. Telescopic shell assembly; 271. Sliding shell; 3. Longitudinal beam. Detailed Implementation

[0023] like Figures 1-5 As shown, this invention provides a safe hoisting system for a factory building, including several longitudinal beams 3 fixed to the roof, and a horizontal beam 1 that moves parallel to each of the longitudinal beams 3. The horizontal beam 1 has an inverted T-shaped cross-section, and a crane 2 is movably mounted on the horizontal beam 1. The number of longitudinal beams 3 and the lengths of the longitudinal beams 3 and the horizontal beam 1 are set according to the interior dimensions, ensuring that the path of the crane 2 covers the interior working space. (Reference) Figure 1 The crossbeam 1 has baffles 11 at both ends. The baffles 11 are made of thick iron plates and can be fixed by screws or welding. Figure 3 As shown, the crane 2 includes a body 21. The lower end of the body 21 is connected to lifting equipment such as a motor and a wire hook. The upper end of the body 21 is a square integral unit. A groove 211 is recessed on the top surface of the body 21. Two support rollers 25 are rotatably mounted on both sides of the groove 211. The two support rollers 25 are rotatably mounted at both ends of the side of the groove 211 and roll on the support surfaces on both sides of the crossbeam 1. The support rollers 25 are used to slide and support the crane 2, allowing the crane 2 to move stably on the crossbeam 1. A drive wheel 22 is also rotatably mounted on both sides of the groove 211. The diameter of the drive wheel 22 is smaller than that of the support rollers 25. Drive protrusions 12 are provided on the support surfaces on both sides of the crossbeam 1. The drive protrusions 12 are located on the movement lines of the drive wheels 22. When the crane 2 moves to the end of the crossbeam 1, the drive wheel 22 contacts the drive protrusion 12. Figure 2 The supporting rollers 25 and the driving wheels 22 are parallel but not overlapping along the movement line of the crossbeam 1, to avoid the crane 2 being affected by the driving protrusion 12 when it moves to the end of the crossbeam 1; Figure 3 and Figure 4The vehicle body 21 has recesses 212 at both ends, and airbags 231 are installed in the recesses 212. Air cylinders 232 are fixedly connected to the ends of the airbags 231. A rotating wheel 241 is coaxially mounted at the ends of the two air cylinders 232 at both ends of the vehicle body 21. Threaded posts 242 are coaxially fixed on both sides of the rotating wheel 241. Sealing plates 233 are threadedly connected to the threaded posts 242. The sealing plates 233 are movably disposed within the air cylinders 232. The sealing plates 233 and the air cylinders... 232 is connected by a spline to prevent the sealing plate 233 from rotating inside the air cylinder 232. The rotating wheel 241 is coaxially provided with bevel teeth. The bevel gear 261 meshes with the rotating wheel 241 inside the vehicle body 21. The bevel gear 261 is coaxially fixed with a spur gear 262. The axle of the drive wheel 22 extends into the vehicle body 21 and is coaxially fixed with a drive gear 263. The drive gear 263 meshes with the spur gear 262. When the drive wheel 22 rotates, it drives the rotating wheel 241 to rotate.

[0024] The safety hoisting system for this factory structure uses an airbag 231 for cushioning. Specifically, as the crane 2 moves on the crossbeam 1, when it reaches the end of the crossbeam 1, the drive wheel 22 engages with the drive protrusion 12. The relative movement between the crane 2 and the drive protrusion 12 drives the drive wheel 22 to rotate. This rotation is transmitted to the rotating wheel 241 via gear transmission, and then reversed via a bevel gear 261. This allows the rotating wheel 241 to rotate along an axis parallel to the direction of travel of the crane 2. The rotation of the rotating wheel 241 causes the threaded posts 242 at both ends to rotate. This rotation of the threaded posts 242 drives the sealing plate 233 to move within the airbag 232. The direction in which the crane 2 moves towards one end of the crossbeam 1 is the same direction in which the sealing plate 233 moves on the threaded posts 242. The sealing plate 233 is compressed. The volume inside the air cylinder 232 inflates the airbag 231. The airbag 231 extends from the sink 212 of the crane 2 and remains inflated. When the crane 2 moves to the end of the crossbeam 1, the airbag 231 contacts the baffle 11, achieving a buffering effect. The crane 2 forms a soft collision with the baffle 11 at the edge of the crossbeam 1. The contraction and deformation of the airbag 231 itself dissipates the impact force, preventing the crane 2 from rebounding and ensuring that the crane 2 can work at the edge. Furthermore, the airbag 231 inflates and extends when the crane 2 approaches the end of the crossbeam 1 and retracts when it leaves the end of the crossbeam 1, ensuring the tightness of the crane 2 and reducing the overall volume of the crane 2. The damping generated by the airbag 231 during inflation reacts to the drive wheel 22 through the sealing plate 233 and gear transmission, giving the crane 2 a braking effect at the edge of the crossbeam 1, slowing down the movement of the crane 2 and reducing the collision force.

[0025] In a further proposed solution, refer to Figure 3 and Figure 4The sink 212 is also slidably provided with a telescopic shell assembly 27, which includes two sliding shells 271 that are slidably arranged with each other. The two sliding shells 271 overlap inward. The innermost sliding shell 271 has its inner side end bonded to the end of the airbag 231. The ends of the sliding shells 271 are provided with limiting structures to limit the extension distance of the sliding shells 271.

[0026] In this structure, the telescopic shell assembly 27 can limit the extension distance of the airbag 231, and the telescopic shell extends with the airbag 231, which limits the lateral expansion of the airbag 231 and also limits the lateral offset of the airbag 231, ensuring that the buffer part of the airbag 231 is concentrated at both ends of the crane 2, thereby improving the buffering performance of the airbag 231.

[0027] In further proposals, such as Figure 5 As shown, a vent hole 2321 is opened in the middle section of the air cylinder 232. After the sealing plate 233 moves from the outer end to the inner end of the air cylinder 232 and passes through the vent hole 2321, the airbag 231 communicates with the outside through the vent hole 2321.

[0028] This structure is used to prevent the airbag 231 from retracting excessively. After the sealing plate 233 moves to the middle of the air cylinder 232, the sealing plate 233 continues to move towards the inner end of the air cylinder 232. At this time, the airbag 231 communicates with the outside through the vent 2321, so that the airbag 231 will not continue to retract inward under the action of the sealing plate 233.

[0029] In further proposals, such as Figure 1 As shown, the drive protrusion 12 is chamfered at one end facing the crane 2, so that the drive wheel 22 can move smoothly onto the drive protrusion 12.

[0030] In a further embodiment, both the drive wheel 22 and the drive protrusion 12 are wrapped with a layer of anti-slip rubber, which can increase the friction between the drive wheel 22 and the drive protrusion 12 and prevent the airbag 231 from being underinflated due to slippage between the drive wheel 22 and the drive protrusion 12.

[0031] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A plant safety hoisting system, comprising a plurality of longitudinal beams (3) fixed on a roof, a cross beam (1) moving in parallel on the plurality of longitudinal beams (3), the cross beam (1) being in inverted T-shaped cross section, and a crane (2) movingly arranged on the cross beam (1), characterized in that: The crossbeam (1) has baffles (11) at both ends. The crane (2) includes a body (21). The top surface of the body (21) is recessed and has a groove (211). Drive wheels (22) are rotatably provided on both sides of the groove (211). Drive protrusions (12) are provided on the support surfaces on both sides of the crossbeam (1). The drive protrusions (12) are located on the movement line of the drive wheels (22). When the crane (2) moves to the end of the crossbeam (1), the drive wheels (22) contact the drive protrusions (12). The two ends of the body (21) A settling tank (212) is provided in each settling tank (212), and an airbag (231) is provided in the settling tank (212). An air cylinder (232) is fixedly connected to the end of the airbag (231). A rotating wheel (241) is provided at the ends of the two air cylinders (232) at both ends of the vehicle body (21) and rotates coaxially. A threaded post (242) is fixedly connected to both sides of the rotating wheel (241) and a sealing plate (233) is threadedly connected to the threaded post (242). The sealing plate (233) is movably disposed in the air cylinder (232). The drive wheel (22) drives the rotating wheel (241) to rotate. At least two support rollers (25) are rotatably provided on both sides of the groove (211). The support rollers (25) are respectively rolled on the support surfaces on both sides of the crossbeam (1). The diameter of the drive wheel (22) is smaller than that of the support rollers (25). The support rollers (25) and the drive wheel (22) are parallel but do not overlap along the movement line of the crossbeam (1). The rotating wheel (241) is coaxially provided with conical teeth. The bevel gear (261) meshes with the rotating wheel (241) in the vehicle body (21). The bevel gear (261) is coaxially fixed with a spur gear (262). The axle of the drive wheel (22) extends into the vehicle body (21) and is coaxially fixed with a driving gear (263). The driving gear (263) meshes with the spur gear (262).

2. The factory building safety hoisting system according to claim 1, characterized in that: The sink (212) is also slidably provided with a telescopic shell assembly (27), which includes several sliding shells (271) that slide against each other. The several sliding shells (271) overlap inward, and the innermost sliding shell (271) is bonded to the end of the airbag (231).

3. The factory building safety hoisting system according to claim 1, characterized in that: A vent hole (2321) is opened in the middle section of the air cylinder (232). After the sealing plate (233) moves from the outer end to the inner end along the air cylinder (232) and passes through the vent hole (2321), the airbag (231) communicates with the outside through the vent hole (2321).

4. The factory building safety hoisting system according to claim 1, characterized in that: The drive protrusion (12) is chamfered at one end facing the crane (2).

5. The factory building safety hoisting system according to claim 1, characterized in that: The outer sides of both the drive wheel (22) and the drive protrusion (12) are covered with a layer of anti-slip rubber.

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