Single-rope multi-petal grab bucket

Abstract

The utility model discloses a single-rope multi-petal grab bucket, and relates to the technical field of multi-petal grab buckets, the single-rope multi-petal grab bucket comprises a sliding rod, an adjusting mechanism, a multi-petal grab bucket mechanism, a connecting rod, a counterweight mechanism and a pulling mechanism, the pulling mechanism is mounted on the upper surface of the sliding rod, a through groove is formed in the middle end of the sliding rod, and the adjusting mechanism comprises four cross rods and four U-shaped groove bodies I; the four cross rods are fixedly connected to the outer surface of the lower end of the sliding rod, the ends, away from the sliding rod, of the cross rods are rotationally connected with first fixing rods, and the first fixing rods are fixedly connected to the inner side wall of the first U-shaped groove body; through the matching of the structures, the structure of the multi-petal grab bucket is simplified, and the production cost is also reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi - flap grab, and particularly relates to a single - rope multi - flap grab. Background Technique

[0002] A grab is a bucket that can open and close to grab various bulk goods. It is mainly a lifting tool that grabs and unloads bulk materials by the opening and closing of two combined buckets on the left and right or multiple jaw plates. A grab that consists of multiple jaw plates is also called a grab.

[0003] Most of the existing grabs are equipped with a hydraulic system or an electrical system, and the grabbing and unloading of materials are realized by controlling the opening and closing of the grab. When the wire rope of the power grab drives the plunger upward through the sliding seat, the hydraulic oil above the piston enters the hydraulic oil pipe through the one - way valve, and then reaches the hydraulic control valve. When the grab reaches the appropriate position, the hydraulic valve is opened through the remote control. At this time, the hydraulic oil above the piston flows back to the fuel tank through the pipeline and the hydraulic valve, and at the same time, the oil cylinder moves downward relative to the plunger. When the oil cylinder moves downward, it drives the jaw petals to open through the lower bearing beam, and the goods grabbed by the grab will flow out until the piston completely extends out of the oil cylinder. At this time, the jaw petals are completely opened and the goods are completely unloaded.

[0004] For some enterprises that use grabs to grab materials for production, there are many grabs with such hydraulic systems or electrical systems, and they have relatively high costs. For some small and medium - sized enterprises, the production cost is relatively high.

[0005] Therefore, we propose a single - rope multi - flap grab. Content of the Utility Model

[0006] The purpose of the utility model is to provide a single - rope multi - flap grab in order to simplify the structure of the multi - flap grab and reduce the production cost.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A single - rope multi - flap grab includes a sliding rod, an adjusting mechanism, a multi - flap grab mechanism, a connecting rod, a counterweight mechanism and a pulling mechanism. The pulling mechanism is installed on the upper surface of the sliding rod. A through - groove is opened inside the middle end of the sliding rod. The adjusting mechanism includes four cross - bars and four U - shaped groove bodies I. The four cross - bars are fixedly connected to the outer surface of the lower end of the sliding rod. One end of the cross - bar away from the sliding rod is rotatably connected to a fixed rod I, and the fixed rod I is fixedly connected to the inner side wall of the U - shaped groove body I.

[0009] The multi-petal grab mechanism includes four grabs. The four grabs are arranged around the outer side of the lower end of the sliding rod. One side of the first U-shaped groove body away from the first fixed rod is fixedly connected to the outer surface of the upper end of the grab. A fixed block is fixedly connected to the side of the grab away from the first U-shaped groove body. The upper surface of the fixed block is fixedly connected to the second U-shaped groove body. The inner side wall of the second U-shaped groove body is fixedly connected to the second fixed rod.

[0010] The counterweight mechanism includes a counterweight ring. The inner side wall of the counterweight ring is fixedly connected to a sliding plate, and the outer surface of the sliding plate is slidably connected to the inner surface of the through groove. The outer side wall of the counterweight ring is fixedly connected to four third U-shaped groove bodies. The inner side wall of the third U-shaped groove body is fixedly connected to the third fixed rod. One end of the connecting rod is rotatably connected to the outer surface of the third fixed rod, and the other end of the connecting rod is rotatably connected to the outer surface of the second fixed rod.

[0011] Furthermore, the pulling mechanism includes a housing. The housing is fixedly connected to the upper surface of the sliding rod. One end of the inner side wall of the housing is fixedly connected to a motor. The output end of the motor is fixedly connected to a rotating rod. The end of the rotating rod away from the motor is rotatably connected to the inner wall of the other side of the housing through a bearing. A steel wire rope is wound around the outer surface of the rotating rod.

[0012] Furthermore, a through hole is formed in the upper end of the sliding rod. The upper opening of the through hole is communicated with the inner cavity of the housing, and the lower opening of the through hole is communicated with the through groove. The end of the steel wire rope away from the rotating rod passes through the through hole and is fixedly connected to the middle upper surface of the sliding plate.

[0013] Furthermore, a lifting ring is fixedly connected to the upper surface of the housing.

[0014] Furthermore, a storage battery is installed on the inner wall of the top end of the housing. The input end of the motor is electrically connected to the storage battery.

[0015] Furthermore, the four third U-shaped groove bodies are equidistantly arranged on the outer surface of the counterweight ring, and the four cross bars are equidistantly arranged on the outer surface of the sliding rod.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are:

[0017] In the present utility model, when using a grab bucket to grab materials, the pulling mechanism can drive the counterweight mechanism to move upward. At this time, the sliding plate will slide upward along the through groove. The upward-sliding sliding plate will drive the counterweight ring to move upward, and then pull the fixed block to tilt to one side through the connecting rod, so that the upper end of the grab bucket tilts towards the lower end of the sliding rod, and the lower end of the grab bucket opens outward to approach the materials to be grabbed. After approaching the materials, the pulling mechanism can make the counterweight ring automatically move downward due to gravity to close the grab bucket and grab the materials, and the counterweight ring can also be designed with a reasonable counterweight according to the maximum weight of the materials to be grabbed. Compared with double-rope multi-lobe grab buckets and grab buckets controlled by hydraulic systems or electrical systems, this application not only simplifies the structure but also reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of a partial structure in the present utility model;

[0020] Figure 3 In the present utility model Figure 1 is an enlarged view of part A.

[0021] Reference numerals in the drawings: 1 - sliding rod, 2 - adjusting mechanism, 3 - multi-lobe grab bucket mechanism, 4 - connecting rod, 5 - counterweight mechanism, 6 - pulling mechanism, 7 - lifting ring, 11 - through groove, 12 - through hole, 21 - cross bar, 22 - fixing rod one, 23 - U-shaped groove body one, 31 - grab bucket, 32 - fixed block, 33 - U-shaped groove body two, 34 - fixing rod two, 51 - counterweight ring, 52 - sliding plate, 53 - U-shaped groove body three, 54 - fixing rod three, 61 - housing, 62 - motor, 63 - rotating rod, 64 - steel wire rope, 65 - storage battery. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model. Embodiment

[0023] Refer to Figures 1 - 3, a single-rope multi-lobe grab, comprising a sliding rod 1, an adjusting mechanism 2, a multi-lobe grab mechanism 3, a connecting rod 4, a counterweight mechanism 5 and a pulling mechanism 6. The pulling mechanism 6 is installed on the upper surface of the sliding rod 1. A through groove 11 is formed inside the middle end of the sliding rod 1. The adjusting mechanism 2 includes four cross bars 21 and four U-shaped groove bodies 23. The four cross bars 21 are equidistantly arranged on the outer surface of the sliding rod 1. The four cross bars 21 are fixedly connected to the outer surface of the lower end of the sliding rod 1. One end of the cross bar 21 away from the sliding rod 1 is rotatably connected to a fixing rod 22. The fixing rod 22 is fixedly connected to the inner side wall of the U-shaped groove body 23. The multi-lobe grab mechanism 3 includes four grabs 31. The four grabs 31 surround the outer side of the lower end of the sliding rod 1. One side surface of the U-shaped groove body 23 away from the fixing rod 22 is fixedly connected to the upper outer surface of the grab 31. One side surface of the grab 31 away from the U-shaped groove body 23 is fixedly connected to a fixing block 32. The upper surface of the fixing block 32 is fixedly connected to a U-shaped groove body 33. The inner side wall of the U-shaped groove body 33 is fixedly connected to a fixing rod 34. Specifically, when using the grab 31 to grab materials, the pulling mechanism 6 can drive the counterweight mechanism 5 to move upward, and then pull the fixing block 32 to tilt to one side through the connecting rod 4, so that the upper end of the grab 31 tilts towards the lower end of the sliding rod 1, and the lower end of the grab 31 opens outward to approach the materials to be clamped.

[0024] Refer to Figures 1 - 3 , the counterweight mechanism 5 includes a counterweight ring 51. Specifically, the counterweight ring 51 can be designed with a reasonable counterweight according to the maximum weight of the materials to be grabbed. The inner side wall of the counterweight ring 51 is fixedly connected to a sliding plate 52, and the outer surface of the sliding plate 52 is slidably connected to the inner surface of the through groove 11. The outer side wall of the counterweight ring 51 is fixedly connected to four U-shaped groove bodies 53. The four U-shaped groove bodies 53 are equidistantly arranged on the outer surface of the counterweight ring 51. The inner side wall of the U-shaped groove body 53 is fixedly connected to a fixing rod 54. One end of the connecting rod 4 is rotatably connected to the outer surface of the fixing rod 54, and the other end of the connecting rod 4 is rotatably connected to the outer surface of the fixing rod 34. Specifically, when the sliding plate 52 slides upward along the through groove 11, the upward-sliding sliding plate 52 will drive the counterweight ring 51 to move upward, and then pull the fixing block 32 to tilt to one side through the connecting rod 4, so that the upper end of the grab 31 tilts towards the lower end of the sliding rod 1, and the lower end of the grab 31 opens outward to approach the materials to be clamped. After approaching the materials, the counterweight ring 51 can be automatically moved downward by gravity through the pulling mechanism 6 to close the grab 31 and then grab the materials, and the counterweight ring 51 can also be designed with a reasonable counterweight according to the maximum weight of the materials to be grabbed. Compared with the double-rope multi-lobe grab and the grab controlled by a hydraulic system or an electrical system, this application not only simplifies the structure but also reduces the production cost.

[0025] Refer to Figures 1 - 3, the pulling mechanism 6 includes a housing 61, the housing 61 is fixedly connected to the upper surface of the sliding rod 1, a storage battery 65 is installed on the inner wall of the top end of the housing 61, and a motor 62 is fixedly connected to the inner side wall of one end of the housing 61. The input end of the motor 62 is electrically connected to the storage battery 65; specifically, the storage battery 65 can provide electrical energy for the start of the motor 62; the output end of the motor 62 is fixedly connected to a rotating rod 63, and the end of the rotating rod 63 away from the motor 62 is rotatably connected to the inner wall of the other side of the housing 61 through a bearing. A steel wire rope 64 is wound around the outer surface of the rotating rod 63. A through hole 12 is opened in the upper end of the sliding rod 1. The upper opening of the through hole 12 is communicated with the inner cavity of the housing 61, and the lower opening of the through hole 12 is communicated with the through groove 11. One end of the steel wire rope 64 away from the rotating rod 63 passes through the through hole 12 and is fixedly connected to the middle upper surface of the sliding plate 52. A lifting ring 7 is fixedly connected to the upper surface of the housing 61; specifically, the single-rope multi-lobe grab is hung on the crane equipment through the lifting ring 7. When using the grab 31 to grab materials, the motor 62 can be started to rotate forward to make the rotating rod 63 rotate. The rotating rotating rod 63 will wind up the steel wire rope 64, thereby driving the sliding plate 52 to slide upward along the through groove 11.

[0026] The implementation principle of an embodiment of a single-rope multi-lobe grab in this application is as follows:

[0027] The single-rope multi-lobe grab is hung on the crane equipment through the lifting ring 7. When using the grab 31 to grab materials, the motor 62 can be started to rotate forward to make the rotating rod 63 rotate. The rotating rotating rod 63 will wind up the steel wire rope 64, thereby driving the sliding plate 52 to slide upward along the through groove 11. The upward-sliding sliding plate 52 will drive the counterweight ring 51 to move upward, thereby pulling the fixed block 32 to tilt to one side through the connecting rod 4, and then tilting the upper end of the grab 31 toward the lower end of the sliding rod 1, and the lower end of the grab 31 will open outward to approach the materials to be clamped; after approaching the materials, the motor 62 can be started to rotate in the reverse direction to make the counterweight ring 51 automatically move downward due to gravity, so as to close the grab 31 and then grab the materials, and the counterweight ring 51 can also be designed with a reasonable counterweight according to the maximum weight of the materials to be grabbed; compared with the double-rope multi-lobe grab and the grab controlled by the hydraulic system or the electrical system, this application not only simplifies the structure but also reduces the production cost.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A single-rope multi-petal grab, comprising a sliding rod (1), an adjusting mechanism (2), a multi-petal grab mechanism (3), a connecting rod (4), a counterweight mechanism (5) and a pulling mechanism (6), characterized in that: The pulling mechanism (6) is installed on the upper surface of the sliding rod (1). A through groove (11) is formed inside the middle end of the sliding rod (1). The adjusting mechanism (2) includes four cross bars (21) and four U-shaped troughs one (23). The four cross bars (21) are fixedly connected to the outer surface of the lower end of the sliding rod (1). One end of the cross bar (21) away from the sliding rod (1) is rotatably connected to a fixing rod one (22), and the fixing rod one (22) is fixedly connected to the inner side wall of the U-shaped trough one (23). The multi-lobe grab mechanism (3) includes four grabs (31). The four grabs (31) surround the outer side of the lower end of the sliding rod (1). One side surface of the U-shaped trough one (23) away from the fixing rod one (22) is fixedly connected to the outer surface of the upper end of the grab (31). One side surface of the grab (31) away from the U-shaped trough one (23) is fixedly connected to a fixing block (32). The upper surface of the fixing block (32) is fixedly connected to a U-shaped trough two (33), and the inner side wall of the U-shaped trough two (33) is fixedly connected to a fixing rod two (34). The counterweight mechanism (5) includes a counterweight ring (51). The inner side wall of the counterweight ring (51) is fixedly connected to a sliding plate (52), and the outer surface of the sliding plate (52) is slidably connected to the inner surface of the through groove (11). The outer side wall of the counterweight ring (51) is fixedly connected to four U-shaped troughs three (53). The inner side wall of the U-shaped trough three (53) is fixedly connected to a fixing rod three (54). One end of the connecting rod (4) is rotatably connected to the outer surface of the fixing rod three (54), and the other end of the connecting rod (4) is rotatably connected to the outer surface of the fixing rod two (34).

2. The single-rope multi-petal grab according to claim 1, wherein: The pulling mechanism (6) includes a housing (61). The housing (61) is fixedly connected to the upper surface of the sliding rod (1). One inner side wall of the housing (61) is fixedly connected to a motor (62). The output end of the motor (62) is fixedly connected to a rotating rod (63). One end of the rotating rod (63) away from the motor (62) is rotatably connected to the other inner wall of the housing (61) through a bearing. A steel wire rope (64) is wound around the outer surface of the rotating rod (63).

3. The single-rope multi-petal grab according to claim 2, characterized in that: A through hole (12) is formed inside the upper end of the sliding rod (1). The upper opening of the through hole (12) is communicated with the inner cavity of the housing (61), and the lower opening of the through hole (12) is communicated with the through groove (11). One end of the steel wire rope (64) away from the rotating rod (63) passes through the through hole (12) and is fixedly connected to the middle upper surface of the sliding plate (52).

4. The single-rope multi-petal grab according to claim 2, wherein: A lifting ring (7) is fixedly connected to the upper surface of the housing (61).

5. The single-rope multi-petal grab according to claim 2, characterized in that: A storage battery (65) is installed on the inner wall of the top end of the housing (61). The input end of the motor (62) is electrically connected to the storage battery (65).

6. The single-rope multi-petal grab according to claim 1, wherein: The four U-shaped troughs three (53) are equidistantly arranged on the outer surface of the counterweight ring (51), and the four cross bars (21) are equidistantly arranged on the outer surface of the sliding rod (1).

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