Draining grab bucket for grabbing blast furnace granulated slag and crane

Abstract

The utility model discloses a draining grab bucket for grabbing blast furnace granulated slag and a crane, and belongs to the technical field of cranes, the draining grab bucket comprises a support frame, two bucket bodies are symmetrically and rotatably arranged at the bottom end of the support frame, a plurality of bottom side overflow holes are formed in the bottom sides of the bucket bodies, and a plurality of side overflow holes are formed in the rear sides of the bucket bodies at the same height; a first filter screen is fixedly connected in the bottom side overflow hole, and a second filter screen is fixedly connected in the side overflow hole; the hopper body is hinged to the supporting frame through a first connecting arm, the hopper body is hinged to the lower supporting rod through a second connecting arm, the supporting frame is connected with the lower supporting rod through a fixing rod arranged on the lower supporting rod in a sleeving mode, and a material scraping assembly is arranged on the lower supporting rod and used for scraping away materials adhering to the interior of the hopper body. The filter screen is arranged on the hopper body, the scraping assembly is arranged in the inner cavity, the scraping plate and the hopper body rotate relatively through opening and closing of the hopper body, then the interior of the hopper body and the filter screen are cleaned, and the draining effect of the hopper body on materials is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to crane technical field, concretely relates to a kind of dewatering grab bucket for blast furnace water slag grabbing and crane. BACKGROUND

[0002] Water slag refers to iron-making blast furnace slag, which is granulated and foamed in the shape of milk white under high-temperature molten state by rapid cooling with water, and it is light, brittle, porous and easy to be ground into fine powder. However, the waste slag from the blast furnace needs to be impacted by water, and then becomes water slag. The water slag is combined with water in its pool, and needs to be dewatered during grabbing. The commonly used grab bucket has dewatering holes at the bottom of bucket blade, but it needs to stay for a period of time after grabbing slag each time, and then the slag water in the bucket is discharged into the designated position after a large amount of slag water is discharged, which increases the grabbing time and causes a certain impact on the later belt conveying.

[0003] The large-area filter screen of the existing grab bucket reduces the rigidity of the grab bucket body, and the dewatering holes are easily blocked by water slag and difficult to clean. The water is not completely dewatered during the material transfer process, which increases the difficulty of the later conveying process, cannot adapt to the current fast-paced production conditions, and seriously affects the dewatering effect of blast furnace slag grabbing.

[0004] Some patents of grab bucket are disclosed in the prior art, and the utility model patent with patent announcement number CN204897188U discloses a screen vibration type selectable grab bucket, which includes upper support beam, support chain, rotating frame, bucket part, lower support beam, pulley, opening and closing rope and screening device. The rotating frame is located on both sides of the upper support beam, the bucket part is connected with the rotating frame, the lower support beam is located in the middle of the bucket part below the upper support beam, and the screening device penetrates the upper support beam and the bucket part. A pair of vertical support chains are fixed on both sides of the upper end surface of the upper support beam, the rotating frame has a pair of "eye" shaped structures, and the pair of rotating frames are symmetrically arranged on both sides of the upper support beam along the center surface of the upper support beam, and the upper part of the rotating frame is hinged with the side surface of the upper support beam. The bucket part has two parts, and the whole bucket part has a columnar structure with a fan-shaped cross section. The lower part of the rotating frame is hinged with the upper end of the outside of the bucket part. The lower support beam has an elongated cylindrical structure, and the pulley is installed in the middle of the lower support beam. The bottom end of the opening and closing rope is installed on the pulley, and the top end of the opening and closing rope penetrates the upper support beam and is connected with the external power pulley. The lower support beam is hinged with the inner side surface of a pair of bucket parts on both sides. Although the screening device has a hollow structure, it can be used to grab water surface materials and has a certain dewatering effect, but the brittle water slag is easily broken and blocked in the screen holes, which reduces the dewatering effect. Due to the special nature of water slag, the problem of reduced dewatering effect due to blocked screen holes still exists.

[0005] In view of this, the present inventors have carried out in-depth research on how to improve the efficiency and effect of grab bucket dewatering, and thus the present case is produced. Utility model content

[0006] In order to overcome the problem that the water slag drainage hole of the existing technology is easy to be blocked by water slag and difficult to clean, and the water drainage effect is poor during material transfer, the utility model provides a water drainage grab bucket for grabbing water slag of a blast furnace and a crane.

[0007] The utility model provides a bucket body for grabbing water slag of a blast furnace, including support frame, two bucket bodies are symmetrically rotatably arranged at the bottom end of the support frame, a plurality of bottom side overflow holes are arranged at the bottom side of the bucket body, a plurality of side overflow holes are arranged at the same height at the rear side of the bucket body, a first filter screen is fixedly connected in the bottom side overflow hole, and a second filter screen is fixedly connected in the side overflow hole.

[0008] The water drainage grab bucket further includes a lower support rod, four first connecting arms and a second connecting arm, the bucket body is hinged to the support frame through the first connecting arms, the bucket body is hinged to the lower support rod through the second connecting arm, the support frame is connected to the lower support rod through a fixing rod sleeved on the lower support rod, a scraping assembly is arranged on the lower support rod, and the scraping assembly is used for scraping the material adhered to the inside of the bucket body.

[0009] The filter screen arranged on the bucket body and the scraping assembly arranged in the inner cavity are matched with each other, so that the water drainage grab bucket is convenient for grabbing water slag of a blast furnace and transferring the water slag, the overflow holes are arranged at the rear side and the bottom side of the bucket body under the condition of ensuring the load bearing and rigidity of the bucket body, the filter screens are arranged on the overflow holes, the overflow holes can be used for water overflow when the grab bucket is used for water surface grabbing operation, water leaks out from the rear side and the bottom side after the material is grabbed, the filter screens are prevented from being blocked by the easily broken material to reduce the water drainage effect, the scraper plates are connected to the lower support rod, the scraper plates relatively rotate with the bucket body through the opening and closing of the bucket body, and then the inside of the bucket body and the filter screens are cleaned, the water drainage effect of the bucket body on the material is improved, the scraping of the scraper plates on the material on the inner wall of the bottom of the bucket body is ensured, and the grabbing amount of the grab bucket is further ensured.

[0010] Further, the scraping assembly includes two scraper plates for rotating against the inner wall of the bucket body, and the scraper plates are connected to the lower support rod through a connecting assembly.

[0011] Through the above technical scheme, the scraper plates are fixed to the lower support rod through the connecting assembly, the scraper plates relatively rotate with the bucket body and abut against the inner wall of the bucket body through the opening and closing of the two bucket bodies, the material adhered to the inner wall of the bottom of the bucket body is scraped off by the scraper plates, and the grabbing amount and the water drainage effect of the grab bucket are ensured.

[0012] Further, the connecting assembly comprises two connecting rods fixedly connected to the end portions of the lower supporting rods respectively, and a clamping plate is fixedly arranged at the free end of each connecting rod, and a plug-in slot is arranged on the clamping plate for plugging in the scraper, and the scraper covers the entrance of the inner cavity of the bucket body when the two bucket bodies are fully opened.

[0013] According to the above technical scheme, the scraper is plugged into the plug-in slot, and the scraper abuts against the bottom inner wall and the side inner walls of the bucket body, thereby ensuring the stability of the scraper during material scraping, and the plug-in design facilitates pulling out the scraper from the plug-in slot, so that the scraper can be replaced.

[0014] Further, the bottom of the supporting frame is provided with a transmission device on each side, and the transmission device comprises a driver and a pressing plate, and each pressing plate is sleeved on the lower supporting rod on the side of the fixed rod, and the pressing plate is connected to the first connecting arm through the driver.

[0015] According to the above technical scheme, the pressing plate and the scraper are located above the bucket, and the bottom surfaces of the pressing plate and the scraper are matched with the bottom surface of the bucket, so that the pressing plate can press the material in the bucket more tightly, and the scraper can scrape the material in the bucket more cleanly, thereby improving the use effect of the pressing plate and the scraper.

[0016] Further, the upper edge of the bucket body is provided with a first connecting lug on the side away from the other bucket body, and the first connecting lug is connected to the first connecting arm, and the upper edge of the bucket body is provided with a second connecting lug on the side close to the other bucket body, and the second connecting lug is connected to the second connecting arm.

[0017] According to the above technical scheme, the connection of the connecting lug and the connecting arm makes the bucket structure stable, facilitates grabbing and dumping the material, and is convenient for replacement and maintenance, and has high practicability.

[0018] Further, a bottom baffle is arranged at the inner side of the bottom overflow hole of the bucket body, and the bottom baffle is detachably connected to the inner surface of the bucket body.

[0019] According to the above technical scheme, the bottom baffle is arranged above the bottom overflow hole, and the baffle is installed according to requirements, so that the bucket is more convenient for grabbing the small material at the bottom of the material pile.

[0020] Further, a first recessed groove is arranged at the inner wall of the bucket body on the circumferential side of the bottom overflow hole, and the bottom baffle is installed in the first recessed groove.

[0021] Further, the inner wall of the bucket body is provided with a second recessed groove at the periphery of the bottom overflow hole, the second filter screen is embedded in the second recessed groove, and the outer surface of the second filter screen is flush with the outer surface of the bucket body.

[0022] Further, a plurality of reinforcing plates are fixedly arranged in the middle part of the scraper and the lower support rod, the reinforcing plates are fixedly connected with the scraper, and the lower support rod penetrates through the reinforcing plates.

[0023] By the above technical scheme, in order to increase the overall stress strength of the scraper, a plurality of reinforcing plates are arranged in the middle part of the scraper and the lower support rod, and the arrangement of the reinforcing plates prevents the material grabbed by the bucket body from falling from the top of the bucket body, thereby avoiding the scattering of the material during the transfer process.

[0024] The utility model discloses still provide a kind of crane for blast furnace water slag transfer, including the grab bucket as described above.

[0025] The beneficial effects of the technical scheme of the utility model are as follows:

[0026] (1) by setting filter screen on the bucket body and setting scraping assembly in the inner cavity, the two cooperate with each other to facilitate the bucket body to grab blast furnace water slag and transfer it, the overflow hole is opened on the bottom and side of the bucket body to ensure the bearing capacity and rigidity of the bucket body, and the filter screen is installed, water leaks from the back and bottom after grabbing the material, to avoid the filter screen being blocked by the easily broken material to reduce the draining effect, the scraping plate is connected on the lower support rod, and the scraping plate and the bucket body are relatively rotated by the opening and closing of the two bucket bodies, to clean the inside of the bucket body and the filter screen, improve the draining effect of the material in the bucket body, ensure the scraping of the material on the inner wall of the bottom of the bucket body by the scraping plate, and further ensure the grabbing capacity of the grab bucket;

[0027] (2) in order to increase the overall stress strength of the scraper, a plurality of reinforcing plates are arranged in the middle part of the scraper and the lower support rod, and the arrangement of the reinforcing plates prevents the material grabbed by the bucket body from falling from the top of the bucket body, thereby avoiding the scattering of the material during the transfer process.

[0028] (3) simple structure, convenient to use, strong grabbing capacity can remove water from the material, increase the amount of material grabbed, completely remove the material when pouring the material, reduce the residual amount of material in the bucket, and improve work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those skilled in the art, other related drawings can be obtained without creative labor based on the drawings.

[0030] Figure 1 is a structural schematic view of a water drainage grab bucket for grabbing water slag of a blast furnace of the present application;

[0031] Figure 2 is a front view of a water drainage grab bucket for grabbing water slag of a blast furnace of the present application;

[0032] Figure 3 is a side view of a water drainage grab bucket for grabbing water slag of a blast furnace of the present application;

[0033] Figure 4 is a structural schematic view of another angle of a water drainage grab bucket for grabbing water slag of a blast furnace of the present application;

[0034] Figure 5 is a fixed schematic view of a scraper of a water drainage grab bucket for grabbing water slag of a blast furnace of the present application;

[0035] In the drawings, 1 is a support frame; 2 is a bucket body; 3 is a bottom side overflow hole; 4 is a side overflow hole; 5 is a first filter screen; 6 is a second filter screen; 7 is a lower support rod; 8 is a first connecting arm; 9 is a second connecting arm; 10 is a scraping assembly; 11 is a scraper; 12 is a connecting rod; 13 is a clamping plate; 14 is a plug-in slot; 15 is a transmission device; 16 is a driver; 17 is a pressing plate; 18 is a first connecting lug; 19 is a bottom baffle; 20 is a first recessed groove; 21 is a reinforcing plate. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of the present application.

[0037] The embodiment adopts the filter screen arranged on the bucket body and the scraping assembly arranged in the inner cavity, which are matched with each other to make the water draining grab bucket convenient to grab the water quenched slag of the blast furnace and transfer it, and water leaks out from the rear side and the bottom side after grabbing the material, the scraper connected on the lower supporting rod is used to clean the inside of the bucket body through the opening and closing of the two bucket bodies, the water draining effect of the grab bucket on the material is improved, and the grabbing amount of the bucket body is ensured. The specific implementation is as follows.

[0038] As shown in Figures 1-5 A water draining grab bucket for grabbing water quenched slag of a blast furnace comprises a supporting frame 1, two bucket bodies 2 symmetrically arranged at the bottom end of the supporting frame 1 and rotatable, a plurality of bottom side overflow holes 3 arranged at the bottom side of the bucket body 2, a plurality of side overflow holes 4 arranged at the same height at the rear side of the bucket body 2, a first filter screen 5 fixedly connected in the bottom side overflow hole 3, and a second filter screen 6 fixedly connected in the side overflow hole 4.

[0039] The water draining grab bucket further comprises a lower supporting rod 7, four first connecting arms 8 and second connecting arms 9, the bucket body 2 is hinged to the supporting frame 1 through the first connecting arms 8, the supporting frame 1 is connected to the lower supporting rod 7 through a fixed rod sleeved on the lower supporting rod 7, the bucket body 2 is hinged to the lower supporting rod 7 through the second connecting arms 9, and a scraping assembly 10 is arranged on the lower supporting rod 7, which is used to scrape off the material adhered to the inside of the bucket body 2.

[0040] Here, the filter screen arranged on the bucket body 2 and the scraping assembly 10 arranged in the inner cavity are matched with each other to make the water draining grab bucket convenient to grab the water quenched slag of the blast furnace and transfer it, the overflow holes are arranged at the rear side and the bottom side of the bucket body 2 under the condition of ensuring the load bearing and rigidity of the bucket body 2, and the filter screens are arranged on the overflow holes, which can be used for water overflow when the bucket body 2 is used for water surface grabbing operation, water leaks out from the rear side and the bottom side after grabbing the material, and the filter screens are prevented from being blocked by the easily broken material to reduce the water draining effect; the scraper 11 connected on the lower supporting rod 7 is used to clean the inside of the bucket body 2 and the filter screen through the opening and closing of the two bucket bodies 2, thereby improving the water draining effect of the grab bucket on the material and ensuring the scraping of the material on the inner wall of the bottom of the bucket body 2, and further ensuring the grabbing amount of the bucket body 2.

[0041] As a preferred embodiment, the scraping assembly 10 comprises two scrapers 11 used to rotate and abut against the inner wall of the corresponding bucket body 2, and the scrapers 11 are connected to the lower supporting rod 7 through a connecting assembly.

[0042] Here, the scrapers 11 are fixed on the lower supporting rod 7 through the connecting assembly, the scrapers 11 rotate relative to the bucket body 2 and abut against the inner wall of the bucket body 2 through the opening and closing of the two bucket bodies 2, and the scrapers 11 scrape off the material adhered to the inner wall of the bottom of the bucket body 2, thereby ensuring the grabbing amount and the water draining effect of the bucket body 2.

[0043] Here, the scraper 11 is matched with the inner wall of the bucket body 2, which is arc-shaped, and a hard scraping hair can be arranged on the side of the scraper 11 close to the bucket body 2.

[0044] As a preferred embodiment, the connecting assembly comprises two connecting rods 12 fixedly connected to the ends of the lower support rods 7, respectively, and the free ends of the connecting rods 12 are fixedly provided with clamping plates 13, and the clamping plates 13 are provided with insertion grooves 14 for inserting the scraper 11, and the scraper 11 covers the entrance of the inner cavity of the bucket body 2 when the two bucket bodies 2 are fully opened.

[0045] Here, because the scraper 11 is inserted into the insertion groove 14, the scraper 11 abuts against the bottom inner wall and the side inner walls of the bucket body 2, which ensures the stability of the scraper 11 during scraping, and the insertion design can facilitate the pulling out of the scraper 11 from the insertion groove 14, so as to replace the scraper 11.

[0046] As a preferred embodiment, the support frame 1 is provided with a transmission device 15, which comprises a driver 16 and two pressing plates 17, and the pressing plates 17 are sleeved on the lower support rods 7 on both sides of the fixed rod, and the pressing plates 17 are connected with the first connecting arm 8 through the driver 16.

[0047] Here, the pressing plates 17 and the scraper 11 are located above the bucket, and the bottom surfaces of the pressing plates 17 and the scraper 11 are matched with the bottom surface of the bucket, so that the pressing plates 17 press the materials in the bucket more tightly, and the scraper 11 scrapes the materials in the bucket more cleanly, thereby improving the use effect of the pressing plates 17 and the scraper 11.

[0048] As a preferred embodiment, the upper edge of the bucket body 2 away from the side of the other bucket body 2 is provided with a first connecting lug 18, and the first connecting lug 18 is connected with the first connecting arm 8, and the upper edge of the bucket body 2 close to the side of the other bucket body 2 is provided with a second connecting lug, and the second connecting lug is connected with the second connecting arm 9.

[0049] Here, the connection of the connecting lug and the connecting arm makes the bucket structure stable, facilitates the grabbing and dumping of materials, and is convenient for replacement and maintenance, and has high practicality.

[0050] As a preferred embodiment, the inner side of the bottom overflow hole 3 of the bucket body 2 is provided with a bottom baffle 19, and the bottom baffle 19 is detachably connected to the inner surface of the bucket body 2.

[0051] Here, the bottom baffle 19 is arranged above the bottom overflow hole 3, and the baffle is installed as required, so that the grab bucket is more convenient for grabbing the small materials at the bottom of the material pile.

[0052] As a preferred embodiment, the inner wall of the bucket body 2 at the circumferential side of the bottom overflow hole 3 is provided with a first recess groove 20, and the bottom baffle 19 is installed in the first recess groove 20.

[0053] As a preferred embodiment, a second recessed groove is arranged on the inner wall of the bucket body 2 at the circumferential side of the bottom-side overflow hole 3, the second filter screen 6 is embedded in the second recessed groove, the periphery of the second filter screen 6 is welded and fixed with the side wall of the second recessed groove, and the outer surface of the second filter screen 6 is flush with the outer surface of the bucket body 2.

[0054] As a preferred embodiment, a plurality of reinforcing plates 21 are fixedly arranged in the middle part of the scraper 11 and the lower supporting rod 7, the reinforcing plates 21 are fixedly connected with the scraper 11, and the lower supporting rod 7 is arranged through the reinforcing plates 21.

[0055] Here, in order to increase the overall stress strength of the scraper 11, a plurality of reinforcing plates 21 are arranged in the middle part of the scraper 11 and the lower supporting rod 7, and the arrangement of the reinforcing plates 21 prevents the materials grabbed by the bucket body 2 from falling from the top of the bucket body 2, thereby avoiding the scattering of the materials in the transfer process. The connection between the reinforcing plates 21 and the scraper 11 is also a detachable connection mode, a connecting groove is arranged on the reinforcing plate 21, and the connecting groove is detachably connected with the scraper 11, so as to facilitate the maintenance and replacement of the scraper 11.

[0056] The embodiment further provides a crane for transferring water slag of a blast furnace, which comprises the water drainage grab bucket.

[0057] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dewatering grab for grab picking of blast furnace slag, characterized in that, The support frame (1) is provided with two bucket bodies (2) at the bottom end, the bottom side of the bucket body (2) is provided with a plurality of bottom overflow holes (3), the rear side of the bucket body (2) is provided with a plurality of side overflow holes (4) at the same height, the first filter screen (5) is fixedly connected in the bottom overflow hole (3), and the second filter screen (6) is fixedly connected in the side overflow hole (4). The draining grab bucket further comprises a lower supporting rod (7), four first connecting arms (8) and a second connecting arm (9), the bucket body (2) is hinged to the support frame (1) through the first connecting arm (8), the bucket body (2) is hinged to the lower supporting rod (7) through the second connecting arm (9), the support frame (1) is connected with the lower supporting rod (7) through a fixed rod sleeved on the lower supporting rod (7), and a material scraping assembly (10) is arranged on the lower supporting rod (7).

2. A dewatering grab for grabbing water quenched slag from a blast furnace according to claim 1, characterized in that, The material scraping assembly (10) comprises two scraper plates (11) corresponding to the inner wall of the bucket body (2) and rotating against the inner wall of the bucket body (2), and the scraper plates (11) are connected to the lower supporting rod (7) through a connecting assembly.

3. A dewatering grab for grabbing water quenched slag from a blast furnace according to claim 2, characterized in that, The connecting assembly comprises two connecting rods (12) fixedly connected to the end portions of the lower supporting rod (7) respectively, the free end of the connecting rod (12) is fixedly provided with a clamping plate (13), the clamping plate (13) is provided with an insertion groove (14) for inserting the scraper plate (11), and the scraper plate (11) covers the inlet of the inner cavity of the bucket body (2) when the two bucket bodies (2) are fully opened.

4. A dewatering grab for grabbing water quenched slag from a blast furnace according to claim 1, characterized in that, The support frame (1) is provided with a transmission device (15) on both sides of the bottom, the transmission device (15) comprises a driver (16) and a pressing plate (17), the two pressing plates (17) are sleeved on the lower supporting rod (7) on both sides of the fixed rod, and the pressing plate (17) is connected with the first connecting arm (8) through the driver (16).

5. A dewatering grab for grabbing water quenched slag from a blast furnace according to claim 1, characterized in that, The upper edge of the bucket body (2) is provided with a first connecting lug (18) on the side away from the other bucket body (2), the first connecting lug (18) is connected with the first connecting arm (8), and the upper edge of the bucket body (2) is provided with a second connecting lug on the side close to the other bucket body (2), and the second connecting lug is connected with the second connecting arm (9).

6. A dewatering grab for grabbing water quenched slag from a blast furnace according to claim 1, characterized in that, The inner side of the bottom overflow hole (3) of the bucket body (2) is provided with a bottom baffle (19), and the bottom baffle (19) is detachably connected to the inner surface of the bucket body (2).

7. A dewatering grab for grab picking of water quenched slag from a blast furnace as claimed in claim 6, wherein, The inner wall of the bucket body (2) on the periphery of the bottom overflow hole (3) is provided with a first recessed groove (20), and the bottom baffle (19) is installed in the first recessed groove (20).

8. A dewatering grab for grab picking of water quenched slag from a blast furnace as claimed in claim 1, wherein, The inner wall of the bucket body (2) on the periphery of the bottom overflow hole (3) is provided with a second recessed groove, the second filter screen (6) is embedded in the second recessed groove, the periphery of the second filter screen (6) and the sidewall of the second recessed groove are welded and fixed, and the outer surface of the second filter screen (6) is flush with the outer surface of the bucket body (2).

9. A dewatering grab for grab picking of water quenched slag from a blast furnace as claimed in claim 2, wherein, The middle part of the scraper (11) and the lower supporting rod (7) is fixed with several reinforcing plates (21), the reinforcing plates (21) are fixedly connected with the scraper (11), and the lower supporting rod (7) is arranged in the reinforcing plates (21).

10. A crane for grab of water granulated slag of a blast furnace, characterized in that, The draining grab bucket comprises the draining grab bucket as claimed in any one of claims 1-9.

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