Bridge crane with safety protection structure

Abstract

The invention relates to the technical field of crane equipment, and particularly discloses a bridge crane with a safety protection structure, which comprises two bearing piles which are symmetrically arranged in parallel, and also comprises a hoisting mechanism which is fixedly mounted on the bearing piles. As the top of the moving table is slidably sleeved on the fixedly mounted sliding rod through the sliding pipe, the movement of the moving table is primarily limited, the moving process of the moving table is more stable, the defect that a conventional crane is not provided with an auxiliary limiting structure is overcome, primary safety protection of the crane is realized, and the safety of the crane is improved. The rollers can synchronously drive the sliding seats to move on the sliding rails on the mounting arms in the moving process, and the rollers rotate relative to the sliding seats, that is, the sliding seats are in a sliding state and the rollers are in a rotating state in the moving process of the moving table, which is different from the conventional mode that the rollers are directly placed on the sliding rails; the idler wheels of the crane are limited through the connection of the sliding seats and the sliding rails, so that the moving stability of the idler wheels is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of crane equipment technology, specifically a bridge crane with a safety protection structure. Background Technology

[0002] Bridge cranes with safety protection structures are important pieces of equipment in the field of lifting and transportation machinery, mainly used for horizontal movement and vertical lifting of materials in industrial sites. These machines typically feature a bridge structure, a lifting trolley, and a traveling mechanism, and require excellent stability and safety protection functions under high-load, high-frequency operating conditions to meet the demands of modern industrial logistics for efficient and reliable lifting operations.

[0003] Although this type of crane is relatively mature in its basic functions, there are still several aspects that can be further optimized in actual use. For example, the traditional structure still has shortcomings in the limit design of the moving platform and the stability of the roller-rail system, which may lead to slight tilting or swaying during movement. At the same time, relying solely on motor braking can easily cause equipment wear and braking response delays under long-term high-load conditions, posing certain safety hazards. In addition, there is still room for improvement in the overall performance of existing bridge cranes in terms of reducing running resistance, extending motor life, and achieving fast and smooth braking. Summary of the Invention

[0004] (a) Technical problems to be solved The present invention provides a bridge crane with a safety protection structure, which solves the problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a bridge crane with a safety protection structure, comprising two load-bearing piles arranged symmetrically in parallel, and further comprising: a lifting mechanism fixedly installed on the load-bearing piles; and a protection mechanism fixedly installed on the lifting mechanism; wherein the lifting mechanism comprises mounting arms, the two ends of which are respectively fixedly connected to the upper surface of the load-bearing piles, wherein two mounting arms are arranged parallel to each other, and a stabilizing frame is fixedly connected to the upper surface of the load-bearing piles, wherein two stabilizing frames are arranged symmetrically, and the stabilizing frames are positioned between the two mounting arms, and sliding rods are symmetrically fixedly connected to both sides of the inner surface of the stabilizing frames, and a moving component is slidably connected to the sliding rod, wherein a lifting rope is movably connected to the bottom of the moving component.

[0006] According to one embodiment of the present invention, the moving component includes a slide tube that is slidably sleeved on the outer surface of a slide rod. A moving platform is fixedly connected to the bottom of the slide tube. The moving platform is disposed between two mounting arms, and a mounting groove is formed on the upper surface of the moving platform.

[0007] According to one embodiment of the present invention, a motor is fixedly embedded in the side surface of the mounting groove, and a rotating shaft is rotatably connected through both ends of the moving platform. The middle part of the rotating shaft is disposed in the mounting groove. A drive shaft is rotatably connected to the output end of the motor. A transmission belt is rotatably connected to the outer surface of the drive shaft, and the end of the transmission belt away from the drive shaft is rotatably connected to the rotating shaft.

[0008] According to one embodiment of the present invention, a slide rail is fixedly connected to the upper surface of the mounting arm, and rollers are fixedly sleeved at both ends of the rotating shaft. The rollers are arranged in pairs, with the rollers in the same pair respectively arranged on both sides of the slide rail, and the bottom of the rollers are rotatably connected to the upper surfaces of both sides of the mounting arm.

[0009] According to one embodiment of the present invention, the protective mechanism includes a slide block, the slide block being disc-shaped, the roller being rotatably sleeved on the outside of the slide block, wherein the diameter of the slide block is smaller than the diameter of the roller, the slide blocks are arranged in pairs, the slide blocks are symmetrically slidably embedded on both sides of the slide rail, and a connecting pipe is fixedly connected through the inner surface of the slide block, the connecting pipe being symmetrically rotatably sleeved on both ends of the rotating shaft.

[0010] According to one embodiment of the present invention, limit grooves are symmetrically formed on the upper surfaces of both sides of the slide rail, and limit rods are slidably connected in the limit grooves, and the limit rods are fixedly connected to the slide block.

[0011] According to one embodiment of the present invention, the bottom of the slide is rotatably connected to a limiting wheel, and five limiting wheels are fixedly spaced on the same slide, with the top of the limiting wheels pressing against the lower surface of the slide rail.

[0012] According to one embodiment of the present invention, a mounting plate is fixedly connected to the bottom surface of the mobile platform, and an elastic telescopic rod is fixedly connected through the side surface of the mounting plate. Three elastic telescopic rods are arranged at fixed intervals, wherein the elastic telescopic rods are configured as bidirectional rods. A plug-in groove is opened on the inner surface of the mounting arm, and the plug-in groove and the elastic telescopic rod are configured to be on the same horizontal plane. Interfaces are fixedly connected to the outer surfaces of both sides of the mounting plate.

[0013] According to one embodiment of the present invention, compression bladders are symmetrically fixedly connected to both sides of the slide tube. The compression bladders are sleeved on the outside of the slide rod. An electromagnetic ring is fixedly connected to the end of the compression bladder away from the slide tube. The electromagnetic ring is slidably connected to the outer surface of the slide rod. The internal cavity of the compression bladder is connected to the interface of the mounting plate and the internal cavity of the elastic telescopic rod through a hose. An electromagnetic valve is provided in the interface.

[0014] When this crane is needed, the goods can be fixedly hoisted to the bottom of the lifting rope. Then, the motor is started. As the motor starts, the drive shaft will start to rotate, which in turn drives the rotating shaft to rotate through the transmission belt. The rotation of the rotating shaft drives the rollers to rotate, so that the moving platform slides on the mounting arm through the rollers to transport the hoisted goods. When the goods are being transported, the connection between the rollers and the mounting arm serves as the moving power for the moving platform.

[0015] (III) Beneficial Effects This invention provides a bridge crane with a safety protection structure. It has the following beneficial effects: (I) This bridge crane with a safety protection structure has a sliding sleeve on the top of the moving platform connected to a fixed sliding rod via a sliding tube, which initially limits the movement of the moving platform and makes the movement process more stable. This is different from the defect of conventional cranes that do not have a secondary limit structure, thus achieving initial safety protection for this crane. During the movement of the rollers, the sliding block will move synchronously on the slide rail on the mounting arm, and the rollers will rotate relative to the sliding block. That is, during the movement of the moving platform, the sliding block is in a sliding state and the rollers are in a rotating state. Unlike the conventional method of directly placing the rollers on the slide rail, the rollers of this crane are limited between the sliding block and the slide rail, which greatly improves the movement stability of the rollers and avoids the problem of the crane being unstable due to the tilting of the rollers during the movement of traditional cranes. At the same time, it can also greatly improve the protection of the shaft and avoid the problem of the moving platform falling due to uneven force after the rollers tilt in conventional cranes, which can cause safety accidents.

[0016] (II) The bridge crane with safety protection structure has a limit bar that further improves the connection strength between the slide and the slide rail. Combined with the roller, it further enhances the movement stability of the moving platform, reduces safety hazards, and improves safety in the production process. At the same time, the limit wheel on the slide greatly reduces the friction when the slide moves along the slide rail, thereby greatly reducing the workload of the motor and extending the service life of the motor.

[0017] (III) This bridge crane with a safety protection structure can quickly decelerate and stop the moving platform when the motor stops working, which greatly improves the working stability of the crane and avoids the problem of frequent maintenance caused by motor damage after long-term use due to the use of motor braking alone. When the motor is restarted, the electromagnetic ring stops working again, which causes the elastic telescopic rod to reset without affecting the continued movement of the moving platform, greatly reducing the threshold for using this crane. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2This is a schematic diagram of the installation structure of the mobile component of the present invention; Figure 3 This is a schematic diagram of the mounting arm of the present invention; Figure 4 This is a schematic diagram of the slide tube and its connection structure of the present invention; Figure 5 This is a schematic diagram of the mounting plate and its connection structure of the present invention; Figure 6 This is a schematic diagram of the transmission belt structure of the present invention; Figure 7 This is a schematic diagram of the installation structure of the roller of the present invention; Figure 8 This is a schematic diagram of the slide of the present invention.

[0019] In the diagram: 1. Load-bearing pile; 2. Lifting mechanism; 21. Mounting arm; 22. Stabilizer; 23. Slide bar; 24. Moving component; 25. Lifting rope; 26. Slide tube; 27. Moving platform; 28. Mounting slot; 29. ​​Motor; 210. Rotating shaft; 211. Drive shaft; 212. Transmission belt; 213. Slide rail; 214. Roller; 3. Protection mechanism; 31. Slide seat; 32. Connecting pipe; 33. Limiting slot; 34. Limiting rod; 35. Limiting wheel; 36. Mounting plate; 37. Elastic telescopic rod; 38. Insertion slot; 39. Interface; 310. Compression bladder; 311. Electromagnetic ring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] First embodiment: as follows Figures 1 to 8 As shown, the present invention provides a technical solution: a bridge crane with a safety protection structure, including load-bearing piles 1, two load-bearing piles 1 arranged parallel and symmetrically to each other, and further including: Crane mechanism 2 is fixedly installed on load-bearing pile 1; Protection mechanism 3 is fixedly installed on the lifting mechanism 2; The lifting mechanism 2 includes an installation arm 21, with both ends of the installation arm 21 fixedly connected to the upper surface of the load-bearing pile 1. There are two installation arms 21 arranged parallel to each other. A stabilizing frame 22 is fixedly connected to the upper surface of the load-bearing pile 1. There are two symmetrically arranged stabilizing frames 22, which are located between the two installation arms 21. Sliding rods 23 are symmetrically fixedly connected to both sides of the inner surface of the stabilizing frame 22. A moving component 24 is slidably connected to the sliding rod 23. A lifting rope 25 is movably connected to the bottom of the moving component 24.

[0022] The movable component 24 includes a slide tube 26, which is slidably sleeved on the outer surface of the slide rod 23. A movable platform 27 is fixedly connected to the bottom of the slide tube 26. The movable platform 27 is disposed between two mounting arms 21. A mounting groove 28 is provided on the upper surface of the movable platform 27.

[0023] A motor 29 is fixedly embedded in the side surface of the mounting groove 28. The two ends of the moving platform 27 are rotatably connected to the rotating shaft 210. The middle part of the rotating shaft 210 is set in the mounting groove 28. The output end of the motor 29 is rotatably connected to the drive shaft 211. The outer surface of the drive shaft 211 is rotatably connected to the transmission belt 212. The end of the transmission belt 212 away from the drive shaft 211 is rotatably connected to the rotating shaft 210.

[0024] The upper surface of the mounting arm 21 is fixedly connected to the slide rail 213, and the two ends of the rotating shaft 210 are fixedly sleeved with rollers 214. The rollers 214 are set in pairs, and the rollers 214 in the same group are respectively set on both sides of the slide rail 213, and the bottom of the rollers 214 are rotatably connected to the upper surfaces of both sides of the mounting arm 21.

[0025] Second embodiment: as follows Figures 1 to 8 As shown, the protection mechanism 3 includes a slide 31, which is disc-shaped. A roller 214 is rotatably sleeved on the outside of the slide 31. The diameter of the slide 31 is smaller than the diameter of the roller 214. The slides 31 are arranged in pairs. The slides 31 are symmetrically slidably embedded on both sides of the slide rail 213. A connecting pipe 32 is fixedly connected through the inner surface of the slide 31. The connecting pipe 32 is symmetrically rotatably sleeved on both ends of the rotating shaft 210.

[0026] Limiting grooves 33 are symmetrically formed on the upper surfaces of both sides of the slide rail 213. Limiting rods 34 are slidably connected in the limiting grooves 33 and are fixedly connected to the slide block 31.

[0027] The bottom of the slide block 31 is rotatably connected to a limiting wheel 35. Five limiting wheels 35 are fixedly spaced on the same slide block 31, and the top of the limiting wheels 35 press against the lower surface of the slide rail 213.

[0028] The bottom surface of the mobile platform 27 is fixedly connected to the mounting plate 36, and the side surface of the mounting plate 36 is fixedly connected to the elastic telescopic rod 37. There are three elastic telescopic rods 37 at fixed intervals, and the elastic telescopic rods 37 are set as bidirectional rods. The inner surface of the mounting arm 21 is provided with a plug groove 38, and the plug groove 38 and the elastic telescopic rod 37 are set to the same horizontal plane. The outer surfaces of both sides of the mounting plate 36 are fixedly connected to the interface 39.

[0029] Compression bladders 310 are symmetrically fixedly connected to both sides of the slide tube 26. The compression bladders 310 are sleeved on the outside of the slide rod 23. An electromagnetic ring 311 is fixedly connected to the end of the compression bladder 310 away from the slide tube 26. The electromagnetic ring 311 is slidably connected to the outer surface of the slide rod 23. The internal cavity of the compression bladder 310 is connected to the interface 39 of the mounting plate 36 and the internal cavity of the elastic telescopic rod 37 through a hose. An electromagnetic valve is installed in the interface 39.

[0030] During operation, when the crane is needed, the goods are fixedly hoisted to the bottom of the lifting rope 25. Then, the motor 29 is started. As the motor 29 starts, it drives the drive shaft 211 to rotate, which in turn drives the rotating shaft 210 to rotate via the transmission belt 212. The rotation of the rotating shaft 210 drives the rollers 214 to rotate, so that the moving platform 27 slides on the mounting arm 21 via the rollers 214 to transport the hoisted goods. When transporting goods, the connection between the rollers 214 and the mounting arm 21 serves as the moving power for the moving platform 27. At this time, since the top of the moving platform 27 is slidably connected to the fixedly installed sliding rod 23 via the sliding tube 26, the movement of the moving platform 27 is initially limited, forcing the moving platform 27 to move. The movement process is more stable, unlike conventional cranes which lack a secondary limit structure, thus providing initial safety protection for this crane. During the movement of the roller 214, the slide 31 moves synchronously on the slide rail 213 on the mounting arm 21, while the roller 214 rotates relative to the slide 31. That is, during the movement of the moving platform 27, the slide 31 is in a sliding state, and the roller 214 is in a rotating state. Unlike the conventional method of directly placing the roller 214 on the slide rail 213, the roller 214 of this crane is limited between the slide 31 and the slide rail 213, significantly improving the movement stability of the roller 214 and avoiding the problem of tilting during the movement of the roller 214 in traditional cranes, which leads to instability in crane operation. Simultaneously, it also... This significantly improves the protection of the rotating shaft 210, preventing the movable table 27 from falling due to uneven force caused by the tilting of the roller 214 in conventional cranes, thus avoiding safety accidents. The limiting rod 34 further enhances the connection strength between the slide block 31 and the slide rail 213, and together with the roller 214, further strengthens the movement stability of the movable table 27, reducing safety hazards and improving safety during production. Simultaneously, the limiting wheel 35 on the slide block 31 significantly reduces the friction when the slide block 31 moves along the slide rail 213, thereby significantly reducing the workload of the motor 29 and extending its service life. When the movable table 27 moves, the slide tube 26 simultaneously begins to slide along the slide rod 23, while the electromagnetic ring 311... In the unpowered state, when the slide tube 26 moves, the compression bladder 310 pushes the electromagnetic ring 311 along the slide rod 23. When the moving platform 27 moves to the designated position, the motor 29 stops working and stops the moving platform 27. At this time, the electromagnetic ring 311 becomes energized and is attracted to the slide rod 23, unable to continue being pushed by the compression bladder 310. After the motor 29 stops, the moving platform 27 continues to move a distance along the slide rail 213 due to inertia. At this time, the slide tube 26 begins to compress one side of the compression bladder 310, thereby causing the compression bladder 310 on one side to deliver its internal air pressure to the internal cavity of the elastic telescopic rod 37 in the mounting plate 36. Meanwhile, the compression bladder 310 on the other side is gradually stretched due to the movement of the slide tube 26.Simultaneously, the solenoid valve inside interface 39, which connects to the compression bladder 310 on the other side, activates and closes interface 39. This stretches the compression bladder 310 into a negative pressure state, preventing air extraction and providing a reverse pulling force to the moving platform 27. This reduces the moving speed and inertia of the moving platform 27. Simultaneously, the internal cavity of the elastic telescopic rod 37 expands to both sides due to the air pressure injected from the compression bladder 310 on the other side. Finally, the outer end of the elastic telescopic rod 37 gradually inserts into the insertion slot 38 in the mounting arm 21, completely braking the moving platform 27. This achieves rapid deceleration and forced stop of the moving platform 27 when the motor 29 stops working, significantly improving the crane's operational stability and avoiding the problem of frequent maintenance required after prolonged use due to motor 29 braking alone. When the motor 29 restarts, the solenoid ring 311 de-energizes again, causing the elastic telescopic rod 37 to reset, without affecting the continued movement of the moving platform 27. This significantly lowers the barrier to entry for using this crane.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge crane with a safety shield, comprising a load bearing pile (1), characterised in that: The load-bearing pile (1) is symmetrically provided with two, further comprising: The lifting mechanism (2) is fixedly installed on the load-bearing pile (1); The protection mechanism (3) is fixedly installed on the lifting mechanism (2); Wherein the lifting mechanism (2) includes mounting arm (21), both ends of the mounting arm (21) are fixedly connected on the upper surface of the load-bearing pile (1), wherein the mounting arm (21) is provided with two, the upper surface of the load-bearing pile (1) is fixedly connected with a stabilizing frame (22), the stabilizing frame (22) is symmetrically provided with two, wherein the stabilizing frame (22) is arranged between the two mounting arms (21), the inner surface of the stabilizing frame (22) is symmetrically fixedly connected with a slide rod (23), the slide rod (23) is slidably connected with a moving assembly (24), wherein the bottom of the moving assembly (24) is movably connected with a lifting rope (25).

2. A bridge crane with a safety shield according to claim 1, characterized in that: The moving assembly (24) includes a slide pipe (26), the slide pipe (26) is slidably connected to the outer surface of the slide rod (23), the bottom of the slide pipe (26) is fixedly connected with a moving table (27), the moving table (27) is arranged between the two mounting arms (21), the upper surface of the moving table (27) is provided with a mounting slot (28).

3. A bridge crane with a safety shield according to claim 2, characterized in that: The side surface of the mounting slot (28) is fixedly embedded with a motor (29), both ends of the moving table (27) are rotatably connected with a rotating shaft (210), the middle part of the rotating shaft (210) is arranged in the mounting slot (28), the output end of the motor (29) is rotatably connected with a drive shaft (211), the outer surface of the drive shaft (211) is rotatably connected with a transmission belt (212), one end of the transmission belt (212) away from the drive shaft (211) is rotatably connected with the rotating shaft (210).

4. A bridge crane with a safety shield according to claim 3, characterized in that: The upper surface of the mounting arm (21) is fixedly connected with a slide rail (213), both ends of the rotating shaft (210) are fixedly sleeved with a roller (214), the rollers (214) are arranged in pairs as a group, wherein the same group of rollers (214) are arranged on both sides of the slide rail (213), and the bottom of the roller (214) is rotatably connected with the upper surface of the mounting arm (21).

5. A bridge crane with a safety shield according to claim 4, characterized in that: The protection mechanism (3) includes a slide seat (31), the slide seat (31) is arranged in a disc shape, the roller (214) is rotatably sleeved on the outer side of the slide seat (31), wherein the diameter of the slide seat (31) is smaller than the diameter of the roller (214), the slide seats (31) are arranged in pairs as a group, the slide seats (31) are symmetrically and slidably embedded on both sides of the slide rail (213), the inner surface of the slide seat (31) is fixedly connected with a connecting pipe (32), the connecting pipe (32) is symmetrically rotatably sleeved on both ends of the rotating shaft (210).

6. A bridge crane with a safety shield according to claim 5, characterized in that: The upper surface of the slide rail (213) is symmetrically provided with a limiting slot (33), the limiting slot (33) is slidably connected with a limiting rod (34), the limiting rod (34) is fixedly connected with the slide seat (31).

7. A bridge crane with a safety shield according to claim 6, characterized in that: The bottom of the sliding seat (31) is rotationally connected with a limiting wheel (35), five limiting wheels (35) are fixedly arranged on the same sliding seat (31) at a fixed interval, and the top of the limiting wheel (35) is in extrusion contact with the lower surface of the sliding rail (213).

8. A bridge crane with a safety shield according to claim 7, characterized in that: The bottom surface of the mobile station (27) is fixedly connected with a mounting plate (36), the side surface of the mounting plate (36) is fixedly connected with an elastic telescopic rod (37) penetratingly, the elastic telescopic rod (37) is arranged at a fixed interval and has three, the elastic telescopic rod (37) is arranged as a bidirectional rod, the inner side surface of the mounting arm (21) is provided with an insertion slot (38), the insertion slot (38) is arranged on the same horizontal plane as the elastic telescopic rod (37), and the two side outer surfaces of the mounting plate (36) are fixedly connected with an interface (39).

9. A bridge crane with a safety shield according to claim 8, characterized in that: The two sides of the sliding pipe (26) are fixedly connected with extrusion capsules (310) in a symmetrical manner, the extrusion capsules (310) are sleeved on the outer side of the sliding rod (23), one end of the extrusion capsule (310) away from the sliding pipe (26) is fixedly connected with an electromagnetic ring (311), the electromagnetic ring (311) is slidingly connected to the outer surface of the sliding rod (23), the internal cavity of the extrusion capsule (310) is communicated with the interface (39) of the mounting plate (36) and the internal cavity of the elastic telescopic rod (37) through a hose, and the interface (39) is provided with an electromagnetic valve.

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