A port crane grab leakage prevention device

Abstract

The present application relates to a kind of wharf crane grab leak-proof device, comprising: left grab bucket, right grab bucket and bearing box, the left grab bucket and right grab bucket are hinged with the bearing box, upper shielding structure is fixedly installed on the bearing box, cleaning structure is installed on the left grab bucket and the right grab bucket, lower shielding structure is installed on the outside of the right grab bucket;Wherein, upper shielding structure is used to shield the space exposed above the left grab bucket and the right grab bucket, to avoid material from above falling;Wherein, cleaning structure is used to clean the surface of shielding structure;It is easy to operate, reduce the leakage phenomenon generated in the process of grabbing.

Description

Technical Field

[0001] This invention relates to a leak-proof device, specifically a leak-proof device for a dock crane grab bucket, belonging to the field of crane grab bucket technology. Background Technology

[0002] Grab cranes, also known as grab bucket cranes, are lifting machines equipped with grab buckets. They are widely used in ports, docks, railway freight yards, mines, and other locations for loading various bulk cargoes, logs, minerals, coal, sand and gravel, earthwork, etc. At docks, the grab buckets of cranes need to lift large quantities of cargo daily, and these cargoes vary widely, including ore pellets, coal, sand, and soybeans.

[0003] Most existing dock cranes use two grab buckets combined to form a gripping mechanism. However, there is no corresponding leak prevention solution during the gripping process. When gripping some loose materials, such as ore pellets, a large amount of leakage can easily occur from above, reducing the gripping capacity of the grab bucket. In addition, the existing left and right grab buckets are connected by a middle connector and lifted by a rope above to open and close. Once the opening and closing power is lost, the two grab buckets are prone to not closing tightly. Therefore, a leak prevention device for dock crane grab buckets is needed. Summary of the Invention

[0004] This invention addresses the problems existing in the prior art by providing a leak-proof device for a dock crane grab bucket. This technical solution provides a leak-proof device for a dock crane grab bucket to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: a leak-proof device for a dock crane grab bucket, comprising: a left grab bucket, a right grab bucket, and a carrying box, wherein the left grab bucket and the right grab bucket are both hinged to the carrying box, an upper shielding structure is fixedly installed on the carrying box, a cleaning structure is installed on both the left grab bucket and the right grab bucket, and a lower shielding structure is installed on the outside of the right grab bucket; wherein, the upper shielding structure is used to shield the space exposed above the left grab bucket and the right grab bucket to prevent materials from falling from above; wherein, the cleaning structure is used to clean the surface of the shielding structure; wherein, the lower... The shielding structure connects the left and right grab buckets, preventing material from falling out when the drive is lost. The upper shielding structure includes two fixed boxes, which are fixedly mounted on the carrier box. Two coil springs are installed inside each fixed box, with a connecting shaft fixedly mounted at one end of each coil spring. A take-up roller is fixedly mounted outside the connecting shaft, and a shielding flexible plate is wound around the outside of the take-up roller. Multiple hooks are installed on the outside of the shielding flexible plate. An inlet / outlet opening is provided on the outside of the fixed box, and the shielding flexible plate is located inside the inlet / outlet opening.

[0006] Preferably, both the left grab bucket and the right grab bucket have multiple hanging holes on their exteriors, and the hooks are engaged with the interior of the hanging holes.

[0007] Preferably, the cleaning structure includes two bottom placement boxes, which are respectively fixedly installed on the left grab bucket and the right grab bucket. A top cover is movably connected to each bottom placement box. A plurality of first springs are fixedly installed inside the top cover. An installation plate is fixedly installed at the end of each first spring away from the top cover. Cleaning cotton is adhered to the outside of the installation plate and the inside of the bottom placement box. A through groove is opened on the outside of the bottom placement box, and the shielding soft plate is located inside the through groove.

[0008] Preferably, a plurality of second vibrating pads are installed inside the mounting plate, and a first vibrating pad is installed inside the bottom placement box, with the first vibrating pad located inside the cleaning cotton.

[0009] Preferably, the lower shielding structure includes a U-shaped shielding plate, which is movably connected to the outside of the right grab bucket, and an electromagnet is fixedly installed on the U-shaped shielding plate.

[0010] Preferably, the electromagnet has multiple limiting grooves inside, and multiple second springs are fixedly installed inside the limiting grooves. A limiting ball is fixedly installed at the end of the second spring away from the limiting groove, and multiple insertion grooves are provided on the outside of the left grab bucket.

[0011] Preferably, a second stop bar is fixedly installed on the outside of the U-shaped baffle, and a first stop bar is fixedly installed on the outside of the right grab bucket.

[0012] Preferably, the outer diameter of the limiting ball is smaller than the inner width of the limiting groove, and the limiting ball is slidably connected to the inside of the limiting groove.

[0013] Compared with the prior art, the present invention has the following advantages: 1) In the present invention, during the grabbing process, the user hangs the hook into the hanging hole and extends the shielding plate to block the top of the left and right grabbing buckets. By blocking the top of the left and right grabbing buckets, a large amount of material is prevented from falling from the gaps above the left or right grabbing buckets when grabbing materials. Furthermore, during the opening and closing of the left and right grabbing buckets, the shielding plate is extended and retracted by a coil spring and a retracting roller, allowing the shielding plate to adapt to the opening and closing of the left and right grabbing buckets, reducing leakage during the grabbing process; 2) In the present invention, during the shielding process, the shielding plate is made of transparent material to ensure visibility from above, and the left and right grabbing buckets are... During the opening and closing of the extended shielding plate, the exterior of the shielding plate can be wiped clean with a cleaning cotton to ensure the visibility of the top of the shielding plate. The first and second vibrating plates can drive the shielding plate to shake, reducing dust adhesion and enhancing the cleaning performance of the cleaning cotton. 3) In this invention, during the grabbing process of the left and right grabbing buckets, when the left and right grabbing buckets have finished grabbing and closed, the electromagnet can be activated to attract the left and right grabbing buckets, making the connection between the left and right grabbing buckets tighter. The second spring drives the limiting ball to insert into the insertion slot, thereby further strengthening the connection between the left and right grabbing buckets and preventing the left and right grabbing buckets from separating randomly and causing a large amount of leakage when the drive is lost. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0015] Figure 2 This is a side view of the anti-leakage device for the grab bucket of the dock crane of the present invention.

[0016] Figure 3 This is a schematic diagram of the U-shaped baffle plate in the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0017] Figure 4 This is a cross-sectional view of the fixing box in the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0018] Figure 5 This is a cross-sectional view of the bottom placement box and the top cover in the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0019] Figure 6 This is a schematic diagram of the winding roller and connecting shaft in the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0020] Figure 7 This is a cross-sectional schematic diagram of the electromagnet in the anti-leakage device for the grab bucket of the dock crane of the present invention;

[0021] Figure 8 This invention relates to a leak-proof device for a dock crane grab bucket. Figure 1 A magnified structural diagram of area A in the diagram;

[0022] Figure 9 This invention relates to a leak-proof device for a dock crane grab bucket. Figure 2 A magnified structural diagram of region B in the diagram.

[0023] In the diagram: 10. Left grab bucket; 11. Right grab bucket; 12. Carrier box; 20. Fixing box; 21. Rewind roller; 22. Connecting shaft; 23. Coil spring; 24. Soft shielding plate; 25. Inlet / outlet opening; 26. Hook; 27. Hanging hole; 30. Bottom placement box; 31. Top cover; 32. Through groove; 33. First spring; 34. First vibrating plate; 35. Second vibrating plate; 36. Mounting plate; 37. Cleaning cotton; 40. U-shaped shielding plate; 41. Electromagnet; 42. Limiting groove; 43. Limiting ball; 44. Second spring; 45. First stop bar; 46. Insertion groove; 47. Second stop bar. Detailed Implementation

[0024] To enhance understanding of the present invention, the embodiments will be described in detail below with reference to the accompanying drawings.

[0025] Example 1: See Figure 1 Please see Figures 1-9 A leak-proof device for a dock crane grab bucket includes: a left grab bucket 10, a right grab bucket 11, and a carrying box 12. Both the left grab bucket 10 and the right grab bucket 11 are hinged to the carrying box 12. An upper shielding structure is fixedly installed on the carrying box 12. Cleaning structures are installed on both the left grab bucket 10 and the right grab bucket 11. A lower shielding structure is installed on the outside of the right grab bucket 11. The upper shielding structure is used to shield the exposed space above the left grab bucket 10 and the right grab bucket 11, preventing material from falling from above. The cleaning structure is used to clean the surface of the shielding structure. The lower shielding structure is used to prevent material from falling from the left grab bucket 10 and the right grab bucket 11. The grab buckets 11 are connected to prevent the left grab bucket 10 and the right grab bucket 11 from separating and causing material to fall when the drive is lost. The upper shielding structure includes two fixed boxes 20, which are fixedly installed on the carrier box 12. Two coil springs 23 are installed inside the fixed box 20. A connecting shaft 22 is fixedly installed at one end of the coil spring 23. A winding roller 21 is fixedly installed outside the connecting shaft 22. A shielding flexible plate 24 is wound around the outside of the winding roller 21. Multiple hooks 26 are installed on the outside of the shielding flexible plate 24. An inlet and outlet opening 25 is opened on the outside of the fixed box 20, and the shielding flexible plate 24 is located inside the inlet and outlet opening 25.

[0026] Specifically, both the left grab bucket 10 and the right grab bucket 11 have multiple hanging holes 27 on their exteriors. Hooks 26 are engaged inside the hanging holes 27. In order to strengthen the connection between the left grab bucket 10 and the right grab bucket 11 and the shielding soft plate 24, the user can engage the hooks 26 inside the hanging holes 27 to complete the connection between the left grab bucket 10, the right grab bucket 11 and the shielding soft plate 24.

[0027] like Figures 1-5 As shown, the cleaning structure consists of two bottom placement boxes 30, which are fixedly installed on the left grab bucket 10 and the right grab bucket 11, respectively. A top cover 31 is movably connected to the bottom placement box 30. Multiple first springs 33 are fixedly installed inside the top cover 31. An installation plate 36 is fixedly installed at the end of the first spring 33 away from the top cover 31. Cleaning cotton 37 is adhered to the outside of the installation plate 36 and the inside of the bottom placement box 30. A through groove 32 is opened on the outside of the bottom placement box 30. A shielding soft plate 24 is located inside the through groove 32. Multiple second vibrating plates 35 are installed inside the installation plate 36. A first vibrating plate 34 is installed inside the bottom placement box 30. The first vibrating plate 34 is located inside the cleaning cotton 37.

[0028] like Figures 1-5 As shown, the principle of the cleaning structure is as follows: In the cleaning structure, the shielding soft plate 24 is located inside the through groove 32. The shielding soft plate 24 located inside the through groove 32 will wipe and clean the surface of the shielding soft plate 24 through the upper and lower cleaning cotton 37. The first spring 33 will drive the mounting plate 36 and the upper cleaning cotton 37 to press the shielding soft plate 24, thereby enhancing the cleaning performance of the cleaning cotton 37 on the shielding soft plate 24. At the same time, by activating the first vibrating plate 34 and the second vibrating plate 35, vibration can be generated and transmitted to the shielding soft plate 24. The vibration reduces the adhesion of dirt and enhances the cleaning performance.

[0029] like Figures 1-7 As shown, the lower shield consists of: a U-shaped shield 40, which is movably connected to the outside of the right grab bucket 11; an electromagnet 41 is fixedly installed on the U-shaped shield 40; a second stop bar 47 is fixedly installed on the outside of the U-shaped shield 40; and a first stop bar 45 is fixedly installed on the outside of the right grab bucket 11.

[0030] like Figures 1-7 As shown, the principle of the lower shield is as follows: In the lower shield structure, the left grab bucket 10 is attracted by the U-shaped shield plate 40 in conjunction with the electromagnet 41, thereby strengthening the connection between the left grab bucket 10 and the right grab bucket 11. When the left grab bucket 10 and the right grab bucket 11 are separated, the electromagnet 41 is turned off, and the first stop bar 45 collidees with the second stop bar 47, thereby limiting the U-shaped shield plate 40 and preventing the U-shaped shield plate 40 from swinging arbitrarily.

[0031] To enhance the stability of the left grab bucket 10 and right grab bucket 11 after grabbing materials, the electromagnet 41 has multiple limiting grooves 42 inside. Multiple second springs 44 are fixedly installed inside the limiting grooves 42. A limiting ball 43 is fixedly installed at the end of the second spring 44 away from the limiting groove 42. The left grab bucket 10 has multiple insertion grooves 46 on its outside. After the electromagnet 41 attracts the left grab bucket 10, the second springs 44 will drive the limiting ball 43 to insert into the insertion groove 46, completing the snap-fit ​​connection between the left grab bucket 10 and right grab bucket 11. This further strengthens the connection between the left grab bucket 10 and right grab bucket 11 and prevents the left grab bucket 10 and right grab bucket 11 from separating arbitrarily and causing a large amount of leakage when the drive is lost.

[0032] Working Process: Based on the above technical solution, the working steps of this solution are summarized as follows: During use, the hook 26 is hung in the hanging hole 27, thereby connecting the left grab bucket 10 and the right grab bucket 11 through the shielding flexible plate 24. When the left grab bucket 10 and the right grab bucket 11 open and close, the coil spring 23 drives the winding roller 21 to rotate, thereby retracting and extending the shielding flexible plate 24 to accommodate the opening and closing of the left grab bucket 10 and the right grab bucket 11. The shielding flexible plate 24 is made of high-strength transparent rubber sheet. The high-quality shielding plate 24 allows workers to directly observe the interior of the left grab bucket 10 and right grab bucket 11 from above. The shielding plate 24 between the left grab bucket 10 and right grab bucket 11 is cleaned by two cleaning cotton pads 37. The first spring 33 drives the mounting plate 36 and the upper cleaning cotton pad 37 to press against the shielding plate 24, thereby enhancing the cleaning performance of the cleaning cotton pad 37. Simultaneously, the first and second vibrating plates are activated. Vibration plate 35 can generate vibration and transmit the vibration to the shielding plate 24. The vibration reduces the adhesion of dirt and enhances the cleaning performance. The first vibrating plate 34 and the second vibrating plate 35 are model BHH25-1AYTL. During the shielding connection process below, the left grab bucket 10 is attracted by the U-shaped shielding plate 40 in conjunction with the electromagnet 41, thereby strengthening the connection between the left grab bucket 10 and the right grab bucket 11. When the left grab bucket 10 and the right grab bucket 11 are separated, the electromagnet 41 is turned off. The first stop lever 45 collidees with the second stop lever 47, thereby limiting the U-shaped baffle 40 and preventing it from swinging arbitrarily. After the electromagnet 41 attracts the left grab bucket 10, the second spring 44 will drive the limiting ball 43 to insert into the insertion slot 46, completing the snap-fit ​​connection between the left grab bucket 10 and the right grab bucket 11, thereby further strengthening the connection between the left grab bucket 10 and the right grab bucket 11 and preventing the left grab bucket 10 and the right grab bucket 11 from separating arbitrarily and causing a large amount of leakage when the drive is lost.

[0033] It should be noted that the above embodiments are not intended to limit the scope of protection of the present invention. Equivalent transformations or substitutions made based on the above technical solutions all fall within the scope of protection of the claims of the present invention.

Claims

1. A leak-proof device for a grab bucket of a dock crane, characterized in that, include: The container includes a left grab bucket, a right grab bucket, and a carrier box. The left and right grab buckets are hinged to the carrier box. An upper shielding structure is fixedly installed on the carrier box. A cleaning structure is installed on both the left and right grab buckets. A lower shielding structure is installed on the outside of the right grab bucket. The upper shielding structure is used to shield the space exposed above the left grab bucket and the right grab bucket; The cleaning structure is used to clean the surface of the shielding structure; The lower shielding structure is used to connect the left grab bucket and the right grab bucket, and to prevent the left grab bucket and the right grab bucket from separating and causing material to fall when the drive is lost; The upper shielding structure includes two fixed boxes, which are fixedly installed on the carrier box. Two coil springs are installed inside the fixed boxes. A connecting shaft is fixedly installed at one end of each coil spring. A take-up roller is fixedly installed outside the connecting shaft. A shielding flexible plate is wound around the outside of the take-up roller. Multiple hooks are installed on the outside of the shielding flexible plate. An inlet / outlet opening is provided on the outside of the fixed boxes, and the shielding flexible plate is located inside the inlet / outlet opening. Both the left and right grab buckets have multiple hanging holes on their exteriors, and hooks are engaged inside the hanging holes. The cleaning structure includes two bottom placement boxes, which are respectively fixedly installed on the left grab bucket and the right grab bucket. A top cover is movably connected to each bottom placement box. Multiple first springs are fixedly installed inside the top cover. An installation plate is fixedly installed at the end of each first spring away from the top cover. Cleaning cotton is adhered to the outside of the installation plate and the inside of the bottom placement box. A through groove is opened on the outside of the bottom placement box, and the shielding soft plate is located inside the through groove.

2. The anti-leakage device for the grab bucket of a dock crane according to claim 1, characterized in that, The mounting plate contains multiple second vibrating pads, and the bottom box contains a first vibrating pad, which is located inside the cleaning cotton.

3. The anti-leakage device for the grab bucket of a dock crane according to claim 2, characterized in that, The lower shielding structure includes a U-shaped shielding plate, which is movably connected to the outside of the right grab bucket, and an electromagnet is fixedly installed on the U-shaped shielding plate.

4. The anti-leakage device for the grab bucket of a dock crane according to claim 3, characterized in that, The electromagnet has multiple limiting grooves inside, and multiple second springs are fixedly installed inside the limiting grooves. A limiting ball is fixedly installed at the end of the second spring away from the limiting groove. The left grab bucket has multiple insertion grooves on its outside.

5. The anti-leakage device for the grab bucket of a dock crane according to claim 4, characterized in that, A second stop bar is fixedly installed on the outside of the U-shaped baffle, and a first stop bar is fixedly installed on the outside of the right grab bucket.

6. The anti-leakage device for the grab bucket of a dock crane according to claim 5, characterized in that, The outer diameter of the limiting ball is smaller than the inner width of the limiting groove, and the limiting ball is slidably connected to the inside of the limiting groove.

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