Novel grab bucket rope blocking device of double-beam bridge type crane

Abstract

The novel double-beam bridge type crane grab bucket rope blocking device comprises a bucket body, an upper bearing beam, a lower bearing beam, a supporting rod, an upper pulley block, a lower pulley block, a supporting rope and an opening and closing rope, the upper bearing beam and the lower bearing beam are divided into the upper bearing beam and the lower bearing beam, the upper pulley block and the lower pulley block are assembled on the upper bearing beam and the lower bearing beam respectively, and the opening and closing rope capable of driving the bucket body to be opened and closed is arranged between the upper pulley block and the lower pulley block. According to the novel grab bucket rope blocking device of the double-beam bridge type crane, an opening and closing rope is limited through the main eccentric wheel and the auxiliary eccentric wheel, friction of the opening and closing rope is reduced, and the opening and closing rope deflects under the action of the rotating part by means of eccentricity generated by the main eccentric wheel and the auxiliary eccentric wheel in the tensioning process; the friction stress point of the opening and closing rope and the force in the rope winding and unwinding direction both act on the main eccentric wheel and are always the same as the rotation direction of the main eccentric wheel, so that friction is reduced, the service life of the opening and closing rope is prolonged, the effect of restraining the opening and closing rope is achieved, and the use scene of a larger opening and closing rope bending angle is met.

Description

Technical Field

[0001] The invention relates to the technical field of grab cranes, in particular to a novel double-beam bridge crane grab rope retaining device. Background Art

[0002] Grab crane is an automatic picking machine. Its grab and unloading actions are operated by the ship unloader driver and do not require auxiliary personnel, thus avoiding the heavy labor of workers, saving auxiliary work time, and greatly improving loading and unloading efficiency. Grab cranes are generally divided into bridge grab cranes, gantry grab cranes, and folding arm grab cranes. The grab cranes that people usually refer to are folding arm grab cranes.

[0003] Grab cranes are generally connected by supporting ropes and opening and closing ropes. The supporting ropes are used to lift the grab, and the opening and closing ropes are used to control the opening and closing of the grab. The wire ropes produce stress torsion under a conforming state, thereby causing the grab to make an angle. In the process of grabbing materials, the materials are not flat, but in the shape of undulating hills. Therefore, a certain angle will be generated in the process of grabbing materials. The opening and closing ropes will twist and contact with the supporting beam, which not only limits the inclination of the grab, but also causes the loss of the opening and closing ropes. For this reason, technical improvements are made to the existing technology. Summary of the invention

[0004] The object of the present invention is to provide a novel double-beam bridge crane grab rope retaining device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A novel double-beam bridge crane grab bucket rope blocking device comprises a bucket body, upper and lower bearing beams, a support rod, an upper and lower pulley assembly, a support rope and an opening and closing rope, wherein the upper and lower bearing beams are divided into an upper bearing beam and a lower bearing beam, and the upper and lower bearing beams are respectively equipped with an upper and lower pulley assembly, and an opening and closing rope capable of driving the bucket body to open and close is arranged between the upper and lower pulley assemblies, the support rope is installed on the top of the upper bearing beam, the bucket body and the upper bearing beam are connected by a support rod, the upper bearing beam is provided with a wire opening for routing the opening and closing rope, and a rope blocking device is installed inside the wire opening; The rope stopper mainly comprises a mounting component, a rotating component and a rope sliding component. The rotating component is mounted on the upper support beam through the mounting component, and the rope sliding component is rotatably mounted inside the rotating component. The sliding rope components include a pulley frame, a main eccentric wheel and an auxiliary eccentric wheel. The main eccentric wheel and the auxiliary eccentric wheel are rotatably installed inside the pulley frame. The tangent point of the main eccentric wheel and the auxiliary eccentric wheel deviates from the center of the wheel frame. During the tightening process of the opening and closing rope, the pulley frame is driven to rotate, so that the force direction of the opening and closing rope is consistent with the rotation direction of the main eccentric wheel, thereby reducing friction loss.

[0006] As a further solution of the present invention: the installation components include a pressure plate, a clamping jaw, an embedding block, an embedding groove and a bite bolt. The upper supporting beam is provided with an embedding groove. The clamping jaw is divided into two left and right holding rings, which are locked by bite bolts. The bottom of the pressure plate and the outer side of the clamping jaw are provided with embedding blocks adapted to the embedding groove. The clamping jaw locks the rotating component by the bite bolt, the clamping jaw is placed in the upper supporting beam, the embedding block is embedded in the embedding groove, and the pressure plate and the clamping jaw are fixed to the upper supporting beam by the tightening bolts.

[0007] As a further solution of the present invention: the rotating component is a double-row tapered roller bearing, an annular groove is arranged on the outer side of the double-row tapered roller bearing, a limiting ring is arranged on the inner side of the clamping jaw, and when the two holding rings of the clamping jaw are fixed to each other, the limiting ring fixes the double-row tapered roller bearing through the annular groove.

[0008] As a further solution of the present invention: an upper locking plate and a lower locking plate are respectively provided on the top and the bottom of the sliding rope component, and the upper locking plate and the lower locking plate limit the reel frame inside the double-row tapered roller bearing through locking bolts.

[0009] As a further solution of the present invention: a wire groove is provided on the top of the upper locking plate, the interior of the lower locking plate is open, and the upper locking plate rotates together with the rotating part of the double-row tapered roller bearing.

[0010] Compared with the prior art, the present invention has the following beneficial effects: The novel double-beam bridge crane grab rope retaining device limits the opening and closing rope through the main eccentric wheel and the auxiliary eccentric wheel to reduce the friction of the opening and closing rope. The eccentricity generated by the main eccentric wheel and the auxiliary eccentric wheel during the tensioning process of the opening and closing rope is utilized to deflect under the action of the rotating parts, so that the friction acceptance point of the opening and closing rope and the force in the direction of rope retraction and release are both acted on the main eccentric wheel, and are always consistent with the rotation direction of the main eccentric wheel, thereby reducing friction, extending the service life of the opening and closing rope, achieving the effect of restraining the opening and closing rope, and meeting the use scenarios of larger opening and closing rope bending angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a new type of double-beam bridge crane grab rope retaining device; Figure 2 It is a structural schematic diagram of a rope stopper in a new type of double-beam bridge crane grab rope stopper device; Figure 3 It is a structural schematic diagram of a centerline wheel frame of a new type of double-beam bridge crane grab rope retaining device; Figure 4 This is a structural front view of the centerline wheel frame of a new type of double-beam bridge crane grab rope retaining device; Figure 5 This is a structural exploded view of a rope stopper in a new type of double-beam bridge crane grab rope stopper device; Figure 6 It is a schematic diagram of the bending of the opening and closing ropes of a new type of double-beam bridge crane grab rope retaining device.

[0012] In the figure: 1. upper and lower supporting beams; 2. support rods; 3. upper and lower pulley assemblies; 4. supporting ropes; 5. opening and closing ropes; 6. upper locking plate; 7. main eccentric wheel; 8. auxiliary eccentric wheel; 9. pulley frame; 10. lower locking plate; 11. pressure plate; 12. double-row tapered roller bearing; 13. clamping bolt; 14. locking bolt; 15. annular groove; 16. embedding block; 17. embedding groove; 18. bite bolt; 19. clamping claw. DETAILED DESCRIPTION

[0013] See also Figures 1 to 6 In the embodiment of the present invention, a novel double-beam bridge crane grab bucket rope blocking device comprises a bucket body, upper and lower bearing beams 1, a support rod 2, upper and lower pulley groups 3, a support rope 4 and an opening and closing rope 5. The upper and lower bearing beams 1 are divided into an upper bearing beam and a lower bearing beam. The upper and lower bearing beams 1 are respectively equipped with upper and lower pulley groups 3. An opening and closing rope 5 capable of driving the bucket body to open and close is arranged between the upper and lower pulley groups 3. The support rope 4 is installed on the top of the upper bearing beam. The bucket body and the upper bearing beam are connected through the support rod 2. The upper bearing beam is provided with a wire opening for routing the opening and closing rope 5, and a rope blocking device is installed inside the wire opening. The rope stopper mainly includes a mounting component, a rotating component and a sliding rope component. The upper support beam is mounted with the rotating component through the mounting component, and the sliding rope component is rotatably mounted inside the rotating component. The sliding rope component includes a wire wheel frame 9, a main eccentric wheel 7 and an auxiliary eccentric wheel 8. The main eccentric wheel 7 and the auxiliary eccentric wheel 8 are rotatably installed inside the wire wheel frame 9. The tangent point of the main eccentric wheel 7 and the auxiliary eccentric wheel 8 deviates from the center of the wheel frame 9. During the tightening process of the opening and closing rope 5, the wire wheel frame 9 is driven to rotate, so that the force direction of the opening and closing rope 5 is consistent with the rotation direction of the main eccentric wheel 7, reducing friction loss. The main eccentric wheel 7 and the auxiliary eccentric wheel 8 are both provided with annular grooves that are compatible with the diameter of the opening and closing rope 5. When the grab bucket falls onto the undulating material, it can be tilted under the action of the grab bucket's own gravity, and the opening and closing rope 5 can be stretched and twisted. , so that the opening and closing rope 5 is bent, and when the opening and closing rope 5 is tightened and pulled through the upper and lower pulley groups 3 to close the grab bucket to realize the material grabbing action, the opening and closing rope 5 is tightened between the main eccentric wheel 7 and the auxiliary eccentric wheel 8, and the opening and closing rope 5 is pulled to the shortest stroke during the tightening process. The main eccentric wheel 7 and the auxiliary eccentric wheel 8 turn when the opening and closing rope 5 is subjected to force, so that the contraction direction of the opening and closing rope 5 is automatically adjusted to be consistent with the rotation direction of the main eccentric wheel 7, which greatly reduces the wear of the opening and closing rope 5 during the process of retracting and releasing, and can adapt to multiple friction angles, effectively improving the service life and safety of the opening and closing rope 5.

[0014] In a preferred embodiment, the mounting components include a pressure plate 11, a clamping jaw 19, an insert 16, an insert groove 17 and a bite bolt 18. The upper support beam is provided with an insert groove 17, the clamping jaw 19 is divided into two left and right holding rings, and the two holding rings are locked by the bite bolt 18. The bottom of the pressure plate 11 and the outer side of the clamping jaw 19 are provided with an insert 16 adapted to the insert groove 17. The clamping jaw 19 locks the rotating component by the bite bolt 18, and the clamping jaw 19 is placed inside the upper support beam, and the insert 16 is engaged with the insert groove 17. The pressure plate 11 and the clamping jaw 19 are fixed to the upper support beam by the clamping bolts 13. The main eccentric wheel 7 and the auxiliary eccentric wheel 8 are installed on the upper and lower support beams 1 through the mounting components. Since the main eccentric wheel 7 and the auxiliary eccentric wheel 8 and the rotating parts are consumable parts, they will provide convenience during the disassembly and replacement process. The function of the clamping jaw 19 is to fix the internal rotating parts. The fitting method of the insert 16 and the embedding groove 17 can better help to position the clamping jaw 19. The pressure plate 11 stably fixes the clamping jaw 19 inside.

[0015] In a preferred embodiment, the rotating component is a double-row tapered roller bearing 12, and an annular groove 15 is provided on the outer side of the double-row tapered roller bearing 12. A limiting ring is provided on the inner side of the clamping jaw 19. When the two holding rings of the clamping jaw 19 are fixed to each other, the limiting ring fixes the double-row tapered roller bearing 12 through the annular groove 15. The split holding rings form the clamping jaw 19, and under the action of the bite bolt 18, it is clamped to fix the double-row tapered roller bearing 12 and limit the orientation of the double-row tapered roller bearing 12. The tapered roller bearing mainly bears radial and axial combined loads, and the bearing load-bearing capacity depends on the raceway angle of the outer ring. The larger the angle, the greater the load-bearing capacity. It is suitable for this application. During the bending and tightening process of the opening and closing rope 5, the bearing bears radial loads to prevent uncoiling and ensure the stability of the equipment.

[0016] In a preferred embodiment, an upper locking plate 6 and a lower locking plate 10 are respectively provided on the top and bottom of the sliding rope component. The upper locking plate 6 and the lower locking plate 10 limit the wire wheel frame 9 inside the double-row tapered roller bearing 12 through a locking bolt 14. The wire wheel frame 9 is also limited by the upper locking plate 6 and the lower locking plate 10. A large amount of dust will be generated when the grab bucket grabs materials. The working environment is complex. There is a gap between the wire wheel frame 9 and the double-row tapered roller bearing 12. The entry of dust will accelerate the wear of this part. Therefore, the upper locking plate 6 and the lower locking plate 10 are installed to perform dust-proof treatment on it, which can also reduce the entry of dust.

[0017] In a preferred embodiment, a wire groove is provided on the top of the upper locking plate 6, and the interior of the lower locking plate 10 is an opening. The upper locking plate 6 rotates with the rotating parts of the double-row tapered roller bearing 12. During the installation of the double-row tapered roller bearing 12, the inner and outer races are installed separately, and the outer race is fixed. The upper locking plate 6 is fixed to the rotatable inner race part of the double-row tapered roller bearing 12 by a locking bolt 14. The wire groove and the opening are set according to the maximum bending angle of the opening and closing rope 5.

[0018] It should be noted that the above embodiments all belong to the same inventive concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference may be made to the description in other embodiments.

[0019] The above-mentioned embodiments only express the implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A novel double-beam bridge crane grab bucket rope retaining device, comprising a bucket body, upper and lower bearing beams (1), a support rod (2), upper and lower pulley assemblies (3), a support rope (4) and an opening and closing rope (5), wherein the upper and lower bearing beams (1) are divided into an upper bearing beam and a lower bearing beam, and the upper and lower bearing beams (1) are respectively equipped with upper and lower pulley assemblies (3), and an opening and closing rope (5) capable of driving the bucket body to open and close is arranged between the upper and lower pulley assemblies (3), and the support rope (4) is installed on the top of the upper bearing beam, and the bucket body and the upper bearing beam are connected by the support rod (2), characterized in that: The upper support beam is provided with a wire opening for routing the opening and closing rope (5), and a rope stopper is installed inside the wire opening; The rope stopper mainly comprises a mounting component, a rotating component and a rope sliding component. The rotating component is mounted on the upper support beam through the mounting component, and the rope sliding component is rotatably mounted inside the rotating component. The sliding rope component comprises a wire wheel frame (9), a main eccentric wheel (7) and an auxiliary eccentric wheel (8). The main eccentric wheel (7) and the auxiliary eccentric wheel (8) are rotatably mounted inside the wire wheel frame (9). The tangent point of the main eccentric wheel (7) and the auxiliary eccentric wheel (8) deviates from the center of the wheel frame (9). When the opening and closing rope (5) is tightened, the wire wheel frame (9) is driven to rotate, so that the force direction of the opening and closing rope (5) is consistent with the rotation direction of the main eccentric wheel (7), thereby reducing friction loss.

2. A novel double-beam bridge crane grab bucket rope retaining device according to claim 1, characterized in that: The mounting components include a pressure plate (11), a clamping jaw (19), an insert (16), an insert groove (17) and an engaging bolt (18). The upper supporting beam is provided with an insert groove (17). The clamping jaw (19) is divided into two left and right holding rings. The two holding rings are locked by an engaging bolt (18). The bottom of the pressure plate (11) and the outer side of the clamping jaw (19) are provided with an insert (16) matched with the insert groove (17). The clamping jaw (19) locks the rotating component by the engaging bolt (18). The clamping jaw (19) is placed in the upper supporting beam, and the insert block (16) is engaged with the insert groove (17). The pressure plate (11) is fixed to the upper supporting beam by the clamping bolt (13).

3. The novel double-beam bridge crane grab rope retaining device according to claim 2 is characterized in that: The rotating component is a double-row tapered roller bearing (12), an annular groove (15) is arranged on the outer side of the double-row tapered roller bearing (12), a limiting ring is arranged on the inner side of the clamping jaw (19), and when the two holding rings of the clamping jaw (19) are fixed to each other, the limiting ring fixes the double-row tapered roller bearing (12) through the annular groove (15).

4. A novel double-beam bridge crane grab rope retaining device according to any one of claims 1 to 3, characterized in that: An upper locking plate (6) and a lower locking plate (10) are respectively provided at the top and the bottom of the sliding rope component, and the upper locking plate (6) and the lower locking plate (10) limit the position of the reel frame (9) inside the double-row tapered roller bearing (12) through a locking bolt (14).

5. The novel double-beam bridge crane grab bucket rope retaining device according to claim 4 is characterized in that: A wire groove is provided on the top of the upper locking plate (6), and the interior of the lower locking plate (10) is open. The upper locking plate (6) rotates together with the rotating part of the double-row tapered roller bearing (12).

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