Aluminum oxide closed grab bucket

Abstract

The utility model belongs to the field of grab buckets, and particularly relates to an aluminum oxide closed grab bucket which comprises a fixing base, a plurality of supports are fixedly connected to the edge of the bottom of the fixing base, the tail ends of the supports are jointly and fixedly connected with a fixing cylinder, and a plurality of shaft pins are fixedly connected to the side wall of the fixing cylinder. An incomplete gear is installed on each shaft pin through a bearing, a grab bucket is welded to the incomplete gears, and a hydraulic cylinder is fixedly installed at the center of the bottom of the fixing base. The hollow sleeve is arranged at the position of the telescopic shaft of the hydraulic cylinder, lubricating oil is stored in the hollow sleeve through the sponge block, when the telescopic shaft resets, the backing ring ascends and resets along with the telescopic shaft of the hydraulic cylinder, the lifting pin on the backing ring can be inserted into the hollow sleeve from the through hole, the sponge block is compressed through the pressing plate, and therefore the lubricating oil is released. Abrasion of telescopic shafts of the hydraulic cylinders is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of grab buckets, in particular to an alumina closed grab bucket. Background Art

[0002] At present, the slag grab in aluminum electrolysis lifting equipment generally adopts an upright structure. The grab is driven to open and close by a pneumatic or hydraulic control mechanism, and penetrates into the high-temperature electrolyte of the electrolytic cell to pick up the residue.

[0003] After searching, a utility model patent with authorization announcement number CN203112346U discloses a slag grab for aluminum electrolysis lifting equipment. A fixed guide column is connected to the bottom of the hydraulic lifting column, and one side of the fixed guide column is connected to the movable column through an auxiliary connecting rod. The lower ends of the fixed guide column and the movable column are connected to the balance beam of the grab mechanism, so that the grab mechanism extends to the other side of the hydraulic lifting column; the right grab or the left grab is connected to the hanging plate pin by a grab drive rod.

[0004] However, the existing grab bucket has a large wear and tear due to the repeated expansion and contraction of the telescopic shaft of its pneumatic or hydraulic control mechanism, which affects its service life. Therefore, it needs to be improved. Summary of the Invention

[0005] The utility model aims to provide an alumina closed grab bucket, which solves the problem that the existing grab bucket suffers from great wear and tear due to repeated extension and retraction of the telescopic shaft of its pneumatic or hydraulic control mechanism, thus shortening its service life.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an alumina closed grab, comprising a fixed seat, a plurality of brackets fixedly connected to the bottom edge of the fixed seat, the ends of the plurality of brackets commonly fixedly connected to a fixed cylinder, a plurality of shaft pins fixedly connected to the side wall of the fixed cylinder, an incomplete gear is mounted on each shaft pin through a bearing, a grab is welded on the incomplete gear, a hydraulic cylinder is fixedly mounted at the bottom center of the fixed seat, a lifting column is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder, a rack is fixedly connected to the surface of the lifting column, and the rack is fixedly connected to the Incomplete gear meshing, the outer side of the telescopic shaft of the hydraulic cylinder is slidably connected to two hollow sleeves, and the two hollow sleeves are in contact with each other. A disassembly mechanism is provided between the hollow sleeve and the fixed seat. A backing ring is fixedly connected to the telescopic shaft of the hydraulic cylinder, and a push pin is fixedly connected to the upper end of the backing ring. A pressure plate and a sponge block are slidably connected to the interior of the hollow sleeve, and the pressure plate and the sponge block are in contact with each other. An oil outlet hole is provided inside the hollow sleeve, and the position of the oil outlet hole corresponds to the telescopic shaft of the hydraulic cylinder. A through hole is provided at the bottom of the hollow sleeve, and the position of the through hole corresponds to the push pin. After the backing ring rises and resets with the telescopic shaft of the hydraulic cylinder, the push pin on the backing ring can be inserted into the hollow sleeve through the through hole, and the sponge block is compressed by the pressure plate.

[0007] Preferably, a spring 1 is provided inside the hollow sleeve, one end of the spring 1 is fixedly connected to the pressure plate, and the other end of the spring 1 is fixedly connected to the inner surface of the hollow sleeve. The provision of the spring 1 assists the pressure plate in resetting.

[0008] Preferably, a rubber plug is slidably connected to the interior of the hollow sleeve, and the rubber plug contacts the sponge block. After removing the rubber plug, it is convenient to add lubricating oil to the sponge block.

[0009] Preferably, the disassembly mechanism includes a mounting base fixedly connected to the bottom of the fixing base, a positioning block clamped inside the mounting base, and the positioning block is fixedly connected to the hollow sleeve, and a locking pin is slidably connected inside the mounting base, one end of the locking pin is plugged into the positioning block, and the other end of the locking pin is fixedly connected to a connecting piece, and a pull ring is fixedly connected to the connecting piece. The provision of the disassembly mechanism facilitates the assembly and disassembly of the hollow sleeve from the fixing base.

[0010] Preferably, a guide rod is fixedly connected to the interior of the mounting seat, a guide block is fixedly connected to the pin body of the locking pin, and the guide block is slidably connected to the interior of the mounting seat, and the guide rod passes through the guide block and is slidably connected to the guide block. The arrangement of the guide rod and the guide block provides a guiding effect for the lateral movement of the locking pin.

[0011] Preferably, a second spring is sleeved on the outside of the rod body of the guide rod, one end of the second spring is fixedly connected to the guide block, and the other end of the second spring is fixedly connected to the inner surface of the mounting seat. Through the arrangement of the second spring, the elastic force can be applied to the lock pin through the guide block.

[0012] Preferably, the side of the guide block is provided with a ball, and the ball contacts the inner surface of the mounting seat. By providing the ball, the relative friction between the guide block and the mounting seat can be reduced.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model provides a fixed cylinder, on which an axle pin is used to connect a combination of an incomplete gear and a grab bucket, and four groups of the combination are provided. In addition, a lifting column driven by a hydraulic cylinder is provided between each incomplete gear. The lifting column is provided with a rack, which meshes with the incomplete gear. In this way, the opening and closing of each grab bucket can be completed by driving the hydraulic cylinder, which is more convenient. In addition, a hollow sleeve is provided at the telescopic shaft of the hydraulic cylinder, and a sponge block is used to store lubricating oil in the hollow sleeve. When the telescopic shaft is reset, the gasket follows and the telescopic shaft of the hydraulic cylinder rises and resets at the same time. The ejector pin on the gasket can be inserted into the hollow sleeve from the through hole, and the sponge block is compressed by the pressure plate, thereby releasing the lubricating oil, reducing the wear of the telescopic shaft of the hydraulic cylinder and improving the service life.

[0015] 2. The utility model provides a disassembly and assembly mechanism between the hollow sleeve and the fixing seat, wherein the hollow sleeve is inserted into the mounting seat through a positioning block and then locked by a retractable locking pin in the mounting seat. In this way, the hollow sleeve can be disassembled and assembled simply by the clutch between the locking pin and the positioning block, which is convenient for subsequent maintenance and replenishment of lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the overall structure of the utility model;

[0017] Figure 2 For the utility model Figure 1 Schematic diagram of the local structure;

[0018] Figure 3 For the utility model Figure 1 Front cross-sectional view of

[0019] Figure 4 For the utility model Figure 3 A magnified view of the structure of part A;

[0020] Figure 5 For the utility model Figure 3 Enlarged view of the B structure.

[0021] In the figure: 1. Fixed seat; 2. Bracket; 3. Fixed cylinder; 31. Axle pin; 4. Incomplete gear; 5. Grab bucket; 6. Hydraulic cylinder; 7. Lifting column; 8. Rack; 9. Disassembly and assembly mechanism; 10. Hollow sleeve; 11. Gasket; 12. Ejector pin; 13. Pressure plate; 14. Sponge block; 15. Oil outlet hole; 16. Through hole; 17. Spring 1; 18. Rubber plug; 91. Mounting seat; 92. Positioning block; 93. Lock pin; 94. Connecting piece; 95. Pull ring; 96. Guide rod; 97. Guide block; 98. Ball; 99. Spring 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-3A closed alumina grab comprises a fixed base 1, a plurality of brackets 2 are fixedly connected to the bottom edge of the fixed base 1, the ends of the plurality of brackets 2 are commonly fixedly connected to a fixed cylinder 3, a plurality of shaft pins 31 are fixedly connected to the side wall of the fixed cylinder 3, an incomplete gear 4 is mounted on each shaft pin 31 through a bearing, a grab 5 is welded on the incomplete gear 4, a hydraulic cylinder 6 is fixedly mounted at the bottom center of the fixed base 1, a lifting column 7 is fixedly connected to the end of the telescopic shaft of the hydraulic cylinder 6, a rack 8 is fixedly connected to the surface of the lifting column 7, the rack 8 is meshed with the incomplete gear 4, and two hollow sleeves 10 are slidably sleeved on the outer side of the telescopic shaft of the hydraulic cylinder 6, and the two hollow sleeves 10 are in contact with each other.

[0024] See also Figure 3-4 A backing ring 11 is fixedly connected to the telescopic shaft of the hydraulic cylinder 6. A push pin 12 is fixedly connected to the upper end of the backing ring 11. A pressure plate 13 and a sponge block 14 are slidably connected to the interior of the hollow sleeve 10, and the pressure plate 13 and sponge block 14 are in contact with each other. An oil outlet 15 is provided within the hollow sleeve 10, and its position corresponds to the telescopic shaft of the hydraulic cylinder 6. A through hole 16 is provided at the bottom of the hollow sleeve 10, and its position corresponds to the push pin 12. After the backing ring 11 rises and resets along with the telescopic shaft of the hydraulic cylinder 6, the push pin 12 on the backing ring 11 can be inserted into the hollow sleeve 10 through the through hole 16, and the sponge block 14 is compressed by the pressure plate 13. A spring 17 is installed inside the hollow sleeve 10. One end of the spring 17 is fixedly connected to the pressure plate 13, and the other end is fixedly connected to the inner surface of the hollow sleeve 10. The provision of the spring 17 assists in the reset of the pressure plate 13. The inside of the hollow sleeve 10 is slidably connected with a rubber plug 18, and the rubber plug 18 conflicts with the sponge block 14. After removing the rubber plug 18, it is convenient to replenish lubricating oil to the sponge block 14.

[0025] See also Figure 3 、 Figure 5A disassembly mechanism 9 is provided between the hollow sleeve 10 and the fixed seat 1. The disassembly mechanism 9 facilitates the assembly and disassembly of the hollow sleeve 10 from the fixed seat 1. The disassembly mechanism 9 includes a mounting seat 91 fixedly connected to the bottom of the fixed seat 1. A positioning block 92 is clamped inside the mounting seat 91, and the positioning block 92 is fixedly connected to the hollow sleeve 10. A locking pin 93 is slidably connected inside the mounting seat 91. One end of the locking pin 93 is plugged into the positioning block 92, and the other end of the locking pin 93 is fixedly connected to a connecting piece 94, and a pull ring 95 is fixedly connected to the connecting piece 94. A guide rod 96 is fixedly connected to the interior of the mounting seat 91. The pin body of the locking pin 93 is fixedly connected to a guide block 97, and the guide block 97 is slidably connected to the interior of the mounting seat 91. The guide rod 96 passes through the guide block 97 and is slidably connected to the guide block 97. The arrangement of the guide rod 96 and the guide block 97 provides a guide for the lateral movement of the locking pin 93. A second spring 99 is sleeved around the outside of the guide rod 96. One end of the second spring 99 is fixedly connected to the guide block 97, while the other end is fixedly connected to the inner surface of the mounting seat 91. The arrangement of the second spring 99 allows the spring force to be applied to the locking pin 93 via the guide block 97. A ball bearing 98 is mounted on the side of the guide block 97, contacting the inner surface of the mounting seat 91. The arrangement of the ball bearing 98 reduces the relative friction between the guide block 97 and the mounting seat 91.

[0026] The specific implementation process of the utility model is as follows: when in use, the hydraulic cylinder 6 pushes the lifting column 7 downward, and the racks 8 on the lifting column 7 cooperate with the corresponding incomplete gears 4, so that the grab bucket 5 can be flipped with the shaft pin 31 as the axis, and then closed to grab the alumina slag. Similarly, after the hydraulic cylinder 6 drives the lifting column 7 to retract and reset, the grab bucket 5 can be opened, and when the telescopic shaft is reset, the gasket 11 follows and the telescopic shaft of the hydraulic cylinder 6 rises and resets, and the top pin 12 on the gasket 11 can be inserted into the hollow sleeve 10 from the through hole 16, and the sponge block 14 is compressed by the pressure plate 13, thereby releasing the lubricating oil, reducing the wear of the telescopic shaft of the hydraulic cylinder 6, and improving the service life. If the lubricating oil needs to be replenished later, it is only necessary to pull down the locking pin 93 horizontally through the pull ring 95 to separate the locking pin 93 from the positioning block 92, thereby releasing the restriction on the positioning block 92, and then the hollow sleeve 10 can be removed, and then the rubber plug 18 can be removed, and the lubricating oil can be replenished to the sponge block 14 from the position of the rubber plug 18.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An alumina closed grab bucket, comprising a fixed seat (1), characterized in that: The bottom edge of the fixed seat (1) is fixedly connected to a plurality of brackets (2), the ends of the plurality of brackets (2) are commonly fixedly connected to a fixed cylinder (3), the side wall of the fixed cylinder (3) is fixedly connected to a plurality of shaft pins (31), each shaft pin (31) is mounted with an incomplete gear (4) via a bearing, a grab (5) is welded to the incomplete gear (4), a hydraulic cylinder (6) is fixedly mounted at the bottom center of the fixed seat (1), the end of the telescopic shaft of the hydraulic cylinder (6) is fixedly connected to a lifting column (7), the surface of the lifting column (7) is fixedly connected to a rack (8), the rack (8) is meshed with the incomplete gear (4), the outer side of the telescopic shaft of the hydraulic cylinder (6) is slidably sleeved with two hollow sleeves ( 10), and the two hollow sleeves (10) are in contact with each other, a disassembly and assembly mechanism (9) is commonly provided between the hollow sleeve (10) and the fixed seat (1), a gasket (11) is fixedly connected to the telescopic shaft of the hydraulic cylinder (6), and a top pin (12) is fixedly connected to the upper end of the gasket (11), a pressure plate (13) and a sponge block (14) are slidably connected inside the hollow sleeve (10), and the pressure plate (13) and the sponge block (14) are in contact with each other, an oil outlet hole (15) is provided inside the hollow sleeve (10), and the position of the oil outlet hole (15) corresponds to the telescopic shaft of the hydraulic cylinder (6), and a through hole (16) is provided at the bottom of the hollow sleeve (10), and the position of the through hole (16) corresponds to the top pin (12).

2. The alumina closed grab bucket according to claim 1, characterized in that: A spring 1 (17) is provided on the inner side of the hollow sleeve (10), one end of the spring 1 (17) is fixedly connected to the pressure plate (13), and the other end of the spring 1 (17) is fixedly connected to the inner surface of the hollow sleeve (10).

3. The alumina closed grab bucket according to claim 1, characterized in that: A rubber plug (18) is slidably connected to the interior of the hollow sleeve (10), and the rubber plug (18) is in contact with the sponge block (14).

4. The alumina closed grab bucket according to claim 1, characterized in that: The disassembly and assembly mechanism (9) includes a mounting seat (91) fixedly connected to the bottom of the fixing seat (1), a positioning block (92) is clamped inside the mounting seat (91), and the positioning block (92) is fixedly connected to the hollow sleeve (10), and a locking pin (93) is slidably connected inside the mounting seat (91), one end of the locking pin (93) is plugged into the positioning block (92), and the other end of the locking pin (93) is fixedly connected to a connecting piece (94), and a pull ring (95) is fixedly connected to the connecting piece (94).

5. The alumina closed grab bucket according to claim 4, characterized in that: The interior of the mounting seat (91) is fixedly connected to a guide rod (96), the pin body of the locking pin (93) is fixedly connected to a guide block (97), and the guide block (97) is slidably connected to the interior of the mounting seat (91), and the guide rod (96) passes through the guide block (97) and is slidably connected to the guide block (97).

6. The alumina closed grab bucket according to claim 5, characterized in that: A second spring (99) is sleeved on the outside of the rod body of the guide rod (96), one end of the second spring (99) is fixedly connected to the guide block (97), and the other end of the second spring (99) is fixedly connected to the inner surface of the mounting seat (91).

Images