Bridge crane with anti-top-rushing protection structure

Abstract

A bridge crane with an anti-collision protection structure comprises a bridge frame, a cart running mechanism and a trolley, an electric hoist is fixed on the trolley, a steel wire rope is wound in the electric hoist, a lifting hook assembly is arranged below the trolley and comprises a pulley shell, and a pulley matched with the steel wire rope is rotationally connected in the pulley shell. A first protection device is mounted on the lifting hook assembly; a second protection device is mounted at the bottom of the trolley; the first protection device comprises a first protection plate arranged above the pulley, the two ends of the first protection plate are slidably connected with L-shaped connecting rods, first springs are fixed to the bottom ends of the connecting rods and arranged in vertical sleeves, the bottoms of the first springs are fixedly connected with the bottoms of the sleeves, and the sleeves are fixed to the outer side of the pulley shell. Sliding blocks are fixed to the two sides of the bottom end of the connecting rod, sliding grooves facilitating up-down sliding of the sliding blocks are formed in the sleeves, and limiting blocks are fixed to the tops of the sliding grooves. The anti-collision protection device has an anti-collision protection function, and can carry out comprehensive protection.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to a bridge crane with an anti-top impact protection structure. Background Art

[0002] A crane refers to a multi-action lifting machine that can lift and carry heavy objects vertically and horizontally within a certain range. There are many types of cranes and they are widely used. Among them, bridge cranes are often used in indoor places such as workshops and factories. It is necessary to build crane tracks in the factory to facilitate the operation of bridge cranes. Bridge cranes include a bridge frame, and a trolley running mechanism that can run along the crane track is installed at both ends of the bridge frame. A trolley that can run left and right is installed on the bridge frame. An electric hoist is fixed on the trolley for lifting heavy objects. However, during operation, due to equipment failure, improper operation and other reasons, it is easy to cause a top collision phenomenon, that is, the hook assembly of the electric hoist rises quickly and hits the bottom of the trolley or the electric hoist, causing serious losses. Therefore, it is necessary to install an anti-top collision protection structure on the crane, but existing cranes often install a protection structure at the bottom of the trolley or the bottom of the electric hoist, such as the patent disclosure of the patent number CN218371377U, and the patent name is a patent disclosure of an anti-top collision bridge crane. The technical solution has a certain protective effect, but the hook assembly directly hits the buffer assembly, which is easy to cause damage to the hook assembly and increase the maintenance cost. Utility Model Content

[0003] The utility model aims to provide a bridge crane with an anti-top impact protection structure, which has an anti-top impact protection function and can provide more comprehensive protection.

[0004] The technical solution adopted by the utility model is:

[0005] A bridge crane with an anti-top impact protection structure comprises a bridge frame, a trolley running mechanism is installed at both ends of the bridge frame, a trolley capable of moving left and right is installed on the bridge frame, an electric hoist is fixed on the trolley, a steel wire rope is wound in the electric hoist, a hook assembly is arranged under the trolley, the hook assembly comprises a pulley housing, a pulley cooperating with the steel wire rope is rotatably connected in the pulley housing, a first protection device is installed on the hook assembly, and a second protection device is installed at the bottom of the trolley; the first protection device comprises a first protection plate arranged above the pulley, an L-shaped connecting rod is slidably connected at both ends of the first protection plate, a first spring is fixed to the bottom end of the connecting rod and is arranged in a vertical sleeve, the bottom of the first spring is fixedly connected to the bottom of the sleeve, the sleeve is fixed to the outside of the pulley housing, sliders are fixed on both sides of the bottom end of the connecting rod, a slide groove is provided in the sleeve for facilitating the sliding of the slider up and down, and a limiting block is fixed on the top of the slide groove.

[0006] The first protection plate is provided with a sliding hole which is slidably matched with the connecting rod, and the side surface of the first protection plate is provided with a strip hole which is connected with the sliding hole. The connecting rod is detachably fixed with a limiting rod which is slidably connected in the strip hole.

[0007] The top and bottom of the first protective plate are both provided with elastic first buffer pads, the top and bottom of the first protective plate are both fixed with first plug-in posts, and the first buffer pad is provided with first plug-in holes that match the first plug-in posts.

[0008] A fixing plate is fixed on the side of the sleeve, and the fixing plate is detachably fixedly connected to the pulley housing by screws.

[0009] The top and bottom of the spring are both fixed with assembly plates, the assembly plate located at the top is detachably fixed to the bottom of the connecting rod, and the assembly plate located at the bottom is detachably fixed to the bottom of the sleeve.

[0010] The second protection device includes a second protection plate arranged under the trolley, the second protection plate is provided with a through hole for facilitating the operation of the wire rope, the second protection plate is also provided with symmetrical mounting holes, a mounting rod is slidably connected in the mounting hole, a limiting block is fixed at the bottom of the mounting rod, a mounting block is fixed at the top of the mounting rod, a mounting groove is provided at the bottom of the trolley for facilitating the up and down movement of the second protection plate, the mounting block is detachably fixed in the mounting groove, and a second spring is sleeved on the mounting rod.

[0011] A second elastic buffer pad is provided at the bottom of the second protective plate, a plurality of spaced second plug-in posts are provided at the bottom of the second protective plate, and a second plug-in hole matched with the second plug-in post is provided at the top of the second buffer pad.

[0012] The utility model has an anti-top impact protection function and can provide comprehensive protection, wherein the trolley running mechanism is used to drive the crane to run along the crane track, the trolley is used to drive the electric hoist to run left and right along the bridge frame, the electric hoist is used to lift heavy objects, the hook assembly is used to hook the heavy objects and work in coordination with the wire rope, a first protection device is installed on the hook assembly to protect the hook assembly, and a second protection device is installed at the bottom of the trolley to protect the trolley and the electric hoist; the first protection device includes a first protection plate arranged above the pulley to play a protective role, two ends of the first protection plate are slidably connected with L-shaped connecting rods, which are convenient for adjusting the interval between the connecting rods according to the specifications of the pulley shell, etc., a first spring is fixed at the bottom end of the connecting rod and is arranged in a vertical sleeve, the bottom of the first spring is fixedly connected to the bottom of the sleeve, the first spring plays a buffering role, the sleeve is fixed to the outside of the pulley shell for easy installation, sliders are fixed on both sides of the bottom end of the connecting rod, a slide groove is arranged in the sleeve, the slider can slide up and down along the slide groove, and a limiting block is fixed at the top of the slide groove to play a limiting role. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 is a schematic diagram of the structure of the first protection device and the hook assembly;

[0015] Figure 3 is a schematic structural diagram of a first protection device;

[0016] Figure 4 is a schematic diagram of the partial structure of the first protection device;

[0017] Figure 5 It is a schematic structural diagram of the second protection device. DETAILED DESCRIPTION

[0018] like Figure 1-Figure 5 As shown, a bridge crane with an anti-top protection structure includes a bridge frame 2, and a trolley running mechanism 1 is installed at both ends of the bridge frame 2 for driving the crane to run along the crane track. A trolley 3 that can move left and right is installed on the bridge frame 2 for driving an electric hoist 4 to run left and right along the bridge frame 2. The bridge frame 2 is provided with a trolley track that is convenient for the trolley 3 to run left and right. The trolley 3 is equipped with a trolley wheel that runs along the trolley track and a driving device that drives the trolley wheel to run. An electric hoist 4 is fixed on the trolley 3, and the electric hoist 4 is used to lift heavy objects. A wire rope is wound inside the electric hoist 4. A hook assembly is provided under the trolley 3, and the hook assembly is used to hook the heavy object and work in conjunction with the wire rope. The hook assembly includes a pulley housing 8, and a pulley 7 that cooperates with the wire rope is rotatably connected in the pulley housing 8. The hook assembly also includes a hook 9 for hooking the heavy object. This is a prior art and will not be repeated here. The hook assembly A first protection device 6 is installed on the top to protect the hook assembly, and a second protection device 5 is installed at the bottom of the trolley 3 to protect the trolley 3 and the electric hoist 4; the first protection device 6 includes a first protection plate 14 arranged above the pulley 7 for protection, and both ends of the first protection plate 14 are slidably connected with an L-shaped connecting rod 13, which is convenient for adjusting the interval between the connecting rods 13 according to the specifications of the pulley shell 8, etc., and a first spring 22 is fixed to the bottom end of the connecting rod 13 and is arranged in a vertical sleeve 11. The bottom of the first spring 22 is fixedly connected to the bottom of the sleeve 11, and the sleeve 11 is fixed to the outside of the pulley shell 8 for easy installation. Slide blocks 20 are fixed on both sides of the bottom end of the connecting rod 13, and a slide groove 23 is provided in the sleeve 11 for facilitating the sliding of the slide block 20 up and down. The slide block 20 can slide up and down along the slide groove 23, and a limiting block 19 is fixed on the top of the slide groove 23 for limiting.

[0019] The connecting rod 13 includes a horizontal rod slidably connected to the first protection plate 14 and a vertical rod disposed in the sleeve 11. There is a gap between the bottom of the horizontal rod and the top of the sleeve 11 to facilitate buffering.

[0020] The first protective plate 14 is provided with a sliding hole that slidably cooperates with the connecting rod 13. The side of the first protective plate 14 is provided with a strip hole 18 that is connected to the sliding hole. The connecting rod 13 is detachably fixed with a limiting rod 17 to facilitate installation and disassembly. The limiting rod 17 is slidably connected in the strip hole 18. During installation, the interval between the two connecting rods 13 is adjusted according to the specifications of the pulley housing 8. When the connecting rod 13 is moved left and right, the limiting rod 17 slides left and right along the strip hole 18 to play a limiting role and prevent the connecting rod 13 from falling out of the sliding hole.

[0021] The top and bottom of the first protective plate 14 are both provided with elastic first buffer pads 15 for buffering. The top and bottom of the first protective plate 14 are both fixed with first plug-in posts 16. The first buffer pad 15 is provided with first plug-in holes that cooperate with the first plug-in posts 16 to facilitate installation and disassembly.

[0022] A fixing plate 12 is fixed to the side of the sleeve 11, and the fixing plate 12 is detachably fixedly connected to the pulley housing 8 by screws, which is convenient for installation and disassembly. When the fixing plate 12 is fixed to the outside of the pulley housing 8 by screws, the positions of the two connecting rods 13 are determined.

[0023] The top and bottom of the spring are both fixed with assembly plates 21. The upper assembly plate 21 is detachably fixed to the bottom of the connecting rod 13, and the lower assembly plate 21 is detachably fixed to the bottom of the sleeve 11, which is convenient for installation and disassembly.

[0024] The second protection device 5 includes a second protection plate 27 arranged under the trolley 3, which plays a protective role. The second protection plate 27 is provided with a through hole that is convenient for the operation of the wire rope. The wire rope can move along the through hole to facilitate the normal operation of the wire rope. The second protection plate 27 is also provided with symmetrical mounting holes, and a mounting rod 26 is slidably connected in the mounting hole. A limiting pad 28 is fixed at the bottom of the mounting rod 26 to play a limiting role. A mounting block 24 is fixed on the top of the mounting rod 26. A mounting groove is provided at the bottom of the trolley 3 to facilitate the up and down movement of the second protection plate 27. The mounting block 24 is detachably fixed in the mounting groove to facilitate installation and disassembly. A second spring 25 is sleeved on the mounting rod 26 to play a buffering role.

[0025] A second elastic buffer pad 29 is provided at the bottom of the second protective plate 27 for buffering and protection. Both the first buffer pad 15 and the second buffer pad 29 can be made of silicone pads. A plurality of spaced second plug-in posts 30 are provided at the bottom of the second protective plate 27. A second plug-in hole cooperating with the second plug-in post 30 is provided at the top of the second buffer pad 29 for easy installation and disassembly.

[0026] The utility model has an anti-top collision protection function and can provide comprehensive protection. During use, the weight is hooked on the hook assembly, the electric hoist 4 is powered on to work, the weight is lifted to a suitable height, the trolley 3 drives the electric hoist 4 and the weight to move left and right along the bridge frame 2, the trolley running mechanism 1 drives the crane to move along the crane track to transport the weight to the destination. When the top collision phenomenon is likely to occur due to equipment failure, improper operation and the like, the first protection device 6 on the hook assembly protects the hook assembly, the second protection device 5 at the bottom of the trolley 3 protects the trolley 3 and the electric hoist 4, the first buffer pad 15 on the first protection plate 14 contacts the second buffer pad 29 on the second protection plate 27, the first protection plate 14 and the connecting rod 13 move downward and squeeze the first spring 22 to play a buffering role, the slider 20 slides downward along the slide groove 23, the second protection plate 27 moves upward along the mounting rod 26 to squeeze the second spring 25 to play a buffering role.

[0027] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. A bridge crane with an anti-top protection structure, comprising a bridge frame, a trolley running mechanism is installed at both ends of the bridge frame, a trolley capable of moving left and right is installed on the bridge frame, an electric hoist is fixed on the trolley, a steel wire rope is wound in the electric hoist, a hook assembly is arranged below the trolley, the hook assembly comprises a pulley housing, a pulley matching the steel wire rope is rotatably connected in the pulley housing, and the characteristics are: A first protection device is installed on the hook assembly, and a second protection device is installed at the bottom of the trolley; the first protection device includes a first protection plate arranged above the pulley, and both ends of the first protection plate are slidably connected with an L-shaped connecting rod, the bottom end of the connecting rod is fixed with a first spring and is arranged in a vertical sleeve, the bottom of the first spring is fixedly connected to the bottom of the sleeve, the sleeve is fixed to the outside of the pulley shell, sliders are fixed on both sides of the bottom end of the connecting rod, and a slide groove is provided in the sleeve to facilitate the sliding of the slider up and down, and a limiting block is fixed on the top of the slide groove.

2. The bridge crane with an anti-roof protection structure according to claim 1, characterized in that: The first protection plate is provided with a sliding hole which is slidably matched with the connecting rod, and the side surface of the first protection plate is provided with a strip hole which is connected with the sliding hole. The connecting rod is detachably fixed with a limiting rod which is slidably connected in the strip hole.

3. The bridge crane with an anti-roof protection structure according to claim 1, characterized in that: The top and bottom of the first protective plate are both provided with elastic first buffer pads, the top and bottom of the first protective plate are both fixed with first plug-in posts, and the first buffer pad is provided with first plug-in holes that match the first plug-in posts.

4. The bridge crane with an anti-roof protection structure according to claim 1, characterized in that: A fixing plate is fixed on the side of the sleeve, and the fixing plate is detachably fixedly connected to the pulley housing by screws.

5. The bridge crane with an anti-roof protection structure according to claim 1, characterized in that: The top and bottom of the spring are both fixed with assembly plates, the assembly plate located at the top is detachably fixed to the bottom of the connecting rod, and the assembly plate located at the bottom is detachably fixed to the bottom of the sleeve.

6. The bridge crane with an anti-roof protection structure according to claim 1, characterized in that: The second protection device includes a second protection plate arranged under the trolley, the second protection plate is provided with a through hole for facilitating the operation of the wire rope, the second protection plate is also provided with symmetrical mounting holes, a mounting rod is slidably connected in the mounting hole, a limiting block is fixed at the bottom of the mounting rod, a mounting block is fixed at the top of the mounting rod, a mounting groove is provided at the bottom of the trolley for facilitating the up and down movement of the second protection plate, the mounting block is detachably fixed in the mounting groove, and a second spring is sleeved on the mounting rod.

7. The bridge crane with an anti-roof protection structure according to claim 6, characterized in that: A second elastic buffer pad is provided at the bottom of the second protective plate, a plurality of spaced second plug-in posts are provided at the bottom of the second protective plate, and a second plug-in hole matched with the second plug-in post is provided at the top of the second buffer pad.

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