CN-224212324-U - Roller assembly and grab bucket for hoisting machinery

Abstract

The utility model belongs to the technical field of grabbing machinery, and discloses a roller assembly for hoisting machinery and a grab bucket. The grab bucket comprises a first installation roller, a second installation roller, a third installation roller and a fourth installation roller, wherein a first gap is formed between the arc surfaces of the first installation roller and the second installation roller, a second gap is clamped between the arc surfaces of the third installation roller and the fourth installation roller, a steel wire rope passes through the first gap and the second gap simultaneously, the back projection is carried out along the length of the steel wire rope, the overlapping area of the first gap and the second gap is quadrilateral, and the problem that pulleys are required to be replaced frequently in the prior art, so that the working efficiency of the grab bucket is low is solved.

Inventors

• Lin Chaohao
• ZHANG WEI
• FANG SHAOLONG

Assignees

• 瑞安市华峰热电有限公司

Dates

Publication Date

20260508

Application Date

20250623

Claims (10)

1. 1. A cylinder subassembly for hoisting machinery, its characterized in that includes first installation roller (1), second installation roller (2), third installation roller (3) and fourth installation roller (4), be formed with first clearance between the arcwall face of first installation roller (1) with second installation roller (2), third installation roller (3) with press from both sides between the arcwall face of fourth installation roller (4) and be equipped with the second clearance, wire rope (9) pass simultaneously first clearance with the second clearance is followed wire rope (9) length back projection, first clearance with the region that the second clearance coincides is the quadrangle.
2. 2. Roller assembly for a hoisting machine according to claim 1, characterized in that the first mounting roller (1) and the second mounting roller (2) are mutually parallel in the axial direction.
3. 3. Roller assembly for a hoisting machine according to claim 2, characterized in that the third mounting roller (3) and the fourth mounting roller (4) are mutually parallel in the axial direction.
4. 4. A roller assembly for a hoisting machine according to claim 3, characterized in that the axes of the first (1) and third (3) mounting rollers are perpendicular.
5. 5. The roller assembly for hoisting machinery according to claim 1, wherein the roller assembly comprises a first steel plate (5) and a second steel plate (6), two groups of first mounting holes (51) are formed in the first steel plate (5), two groups of second mounting holes (61) are formed in the second steel plate (6), a first rod body (11) is arranged at the axis of the first mounting roller (1), a second rod body (21) is arranged at the axis of the second mounting roller (2), two ends of the first rod body (11) are respectively inserted into the first mounting holes (51) and the second mounting holes (61), and two ends of the second rod body (21) are respectively inserted into the first mounting holes (51) and the second mounting holes (61).
6. 6. The roller assembly for hoisting machinery according to claim 5, wherein the roller assembly comprises a third steel plate (7) and a fourth steel plate (8), two groups of third mounting holes (71) are formed in the third steel plate (7), two groups of fourth mounting holes (81) are formed in the fourth steel plate (8), a third rod body (31) is arranged at the axis of the third mounting roller (3), a fourth rod body (41) is arranged at the axis of the fourth mounting roller (4), two ends of the third rod body (31) are respectively inserted into the third mounting holes (71) and the fourth mounting holes (81), and two ends of the fourth rod body (41) are respectively inserted into the third mounting holes (71) and the fourth mounting holes (81).
7. 7. A roller assembly for a hoisting machine according to claim 6, characterized in that the first steel plate (5) is rack-mounted on the upper side of the third steel plate (7), and the second steel plate (6) is mounted on the upper side of the fourth steel plate (8).
8. 8. A roller assembly for a hoisting machine according to claim 4, characterized in that the first (1) and second (2) mounting rollers have a diameter of 8cm and a length of 12cm, and the third (3) and fourth (4) mounting rollers have a diameter of 8cm and a length of 6cm.
9. 9. The roller assembly for a hoisting machine according to claim 8, characterized in that the first mounting roller (1) and the second mounting roller (2) are 4cm apart, the third mounting roller (3) and the fourth mounting roller (4) are 4cm apart, and the distance between the axes of the first mounting roller (1) and the third mounting roller (3) is 12cm.
10. 10. A grab bucket, characterized in that, including the cylinder subassembly for hoisting machinery of claim 1, still include wire rope (9) and grab bucket body, wire rope (9) pass first clearance and second clearance, the grab head body is installed to the lower extreme of wire rope (9), the grab bucket body can snatch the object.

Description

Roller assembly and grab bucket for hoisting machinery Technical Field The utility model relates to the technical field of grabbing machinery, in particular to a roller assembly for hoisting machinery and a grab bucket. Background The dry coal shed is a large-scale storehouse for storing coal in a thermal power plant, the large-scale grab bucket is required to be used for moving coal, the grab bucket is assembled on the dry coal shed structure and used for grabbing coal, the grab bucket pulley block of the dry coal shed is assembled in a gap between two parallel steel plates in front and back by 2 ordinary carbon steel pulleys with grooves, semicircular grooves are formed in edges of the pulleys, the semicircular grooves on the two groups of pulleys are butted with each other to form the circular grooves, the steel wire rope penetrates through the circular grooves, the steel wire rope is limited by the pulleys on two sides, the grab bucket is limited by a place in the moving process, the grab bucket is required to be subjected to inclined pulling operation, the pulleys are inclined along the axis of the pulleys, the pulleys are still kept in a vertical state, so that the steel wire rope can be pressed on two sides of the semicircular grooves along the axis direction of the pulleys, one side of the pulleys can be subjected to repeated friction of the steel wire rope in the operation process, the steel wire rope is directly pressed on the edges of the semicircular grooves in the friction process, the axial friction between the steel wire rope and the pulleys is close to sliding friction, the steel wire rope penetrates through the circular grooves, the two pulleys are worn down, the steel wire rope is worn down in the process, and the wear of the pulleys is further required to be reduced in the process of the pulley is increased, and the steel wire rope is worn down in the process, and the steel pulley is worn down in the process. Disclosure of utility model The utility model aims to provide a roller assembly for hoisting machinery and a grab bucket, which solve the problem that the working efficiency of the grab bucket is low because pulleys are required to be replaced frequently in the prior art. The utility model provides a roller assembly for hoisting machinery, which comprises a first installation roller, a second installation roller, a third installation roller and a fourth installation roller, wherein a first gap is formed between the arc surfaces of the first installation roller and the second installation roller, a second gap is clamped between the arc surfaces of the third installation roller and the fourth installation roller, a steel wire rope passes through the first gap and the second gap at the same time, the steel wire rope is subjected to back projection along the length of the steel wire rope, and the overlapping area of the first gap and the second gap is quadrangular. Preferably, the first and second mounting rollers are parallel to each other in the axial direction. Preferably, the third installation roller and the fourth installation roller are parallel to each other in the axial direction. Preferably, the axes of the first and third mounting rollers are perpendicular. Preferably, the roller assembly comprises a first steel plate and a second steel plate, two groups of first mounting holes are formed in the first steel plate, two groups of second mounting holes are formed in the second steel plate, a first rod body is arranged at the axis of the first mounting roller, a second rod body is arranged at the axis of the second mounting roller, two ends of the first rod body are respectively inserted into the first mounting holes and the second mounting holes, and two ends of the second rod body are respectively inserted into the first mounting holes and the second mounting holes. Preferably, the roller assembly comprises a third steel plate and a fourth steel plate, two groups of third mounting holes are formed in the third steel plate, two groups of fourth mounting holes are formed in the fourth steel plate, a third rod body is arranged at the axis of the third mounting roller, a fourth rod body is arranged at the axis of the fourth mounting roller, two ends of the third rod body are respectively inserted into the third mounting holes and the fourth mounting holes, and two ends of the fourth rod body are respectively inserted into the third mounting holes and the fourth mounting holes. Preferably, the first steel plate frame is mounted on the upper side of the third steel plate, and the second steel plate is mounted on the upper side of the fourth steel plate. Preferably, the first and second mounting rollers have a diameter of 8cm and a length of 12cm, and the third and fourth mounting rollers have a diameter of 8cm and a length of 6cm. Preferably, the distance between the first mounting roller and the second mounting roller is 4cm, the distance between the third mounting roller and the fou