Rotary angle-adjustable grab bucket

Abstract

The utility model discloses a rotary angle-adjustable grab bucket, and relates to the technical field of engineering machinery grabbing devices. The rotary angle-adjustable grab bucket comprises a rotary fixing seat, grab bucket bodies are arranged on the left side and the right side of the bottom end of the rotary fixing seat, a hydraulic cylinder is arranged in the middle of the bottom end of the rotary fixing seat, a driving beam is arranged at the bottom end of the hydraulic cylinder, and opening and closing connecting rod sets are arranged at the left end and the right end of the driving beam correspondingly; the transmission worm gear ring and the driving gear ring can be driven to rotate through rotation of the driving worm, then the rotating sleeve is made to rotate, angle adjustment of the horizontal plane of the whole grab bucket body is achieved, goods are accurately grabbed, the loading and unloading efficiency is improved, and the loading and unloading time is shortened. And when irregular goods are grabbed, the proper-position moving rod can slide on the rotary connecting rod, so that the grab bucket body can be attached to the surface of the goods in a self-adaptive mode, the stability of the grabbing effect is effectively improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of engineering machinery gripping devices, specifically a rotary adjustable angle grab bucket. Background Technology

[0002] A grab bucket is a special tool for cranes to grab dry bulk goods. It consists of two or more openable and closable bucket-shaped jaw plates that come together to form a cargo space. It mainly relies on the opening and closing of the jaw plates to grab and unload bulk materials. It can quickly grab and unload large amounts of bulk materials, achieving high loading and unloading efficiency and significantly shortening the loading and unloading time of goods.

[0003] The existing technology has the following problems:

[0004] Existing grabs, when faced with different usage environments, are prone to incomplete gripping of edge cargo because the angle of the grab cannot be adjusted. This requires manual assistance or repeated operations, resulting in low efficiency during loading and unloading. Furthermore, since the grab's bucket-shaped jaws remain symmetrical in the open and closed state, they cannot simultaneously adhere to the surface of irregular cargo, leading to unstable gripping performance, low gripping stability, and significant safety hazards. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a rotary adjustable angle grab bucket, which solves the problems of angle limitation and grabbing effect.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a rotary adjustable angle grab bucket includes a rotary fixed base, a grab bucket body is provided on the left and right sides of the bottom end of the rotary fixed base, a hydraulic cylinder is provided in the middle of the bottom end of the rotary fixed base, a drive beam is provided at the bottom end of the hydraulic cylinder, an opening and closing linkage group is provided on both the left and right ends of the drive beam, and the end of the opening and closing linkage group away from the drive beam is provided at the top of the grab bucket body.

[0007] Preferably, the rotating fixed seat includes a rotating sleeve fixedly connected to the top of the hydraulic cylinder, a support cylinder rotatably connected inside the rotating sleeve, a support drive column fixedly connected to the middle of the top of the support cylinder, a grab bucket support seat rotatably connected to the top of the grab bucket body fixedly connected to the top of the support cylinder, two connecting columns fixedly connected between the outer surface of the rotating sleeve and the grab bucket support seat, and the top of the support drive column extends to the outer side of the top of the grab bucket support seat.

[0008] Preferably, the support drive column includes a support column fixedly connected to the top of the support cylinder, a transmission worm gear ring rotatably connected inside the support column, and a drive worm gear rotating inside the support drive column on both the left and right sides of the transmission worm gear ring. The two drive worm gears rotate in opposite directions. A drive gear ring is fixedly connected to the bottom end of the transmission worm gear ring, and the drive gear ring is rotatably connected inside the support column and its outer surface extends to the outside of the support column.

[0009] Preferably, each pair of teeth on the front and rear sides of the transmission worm gear ring is connected to a positioning tooth, the outer surface of which is slidably connected to the inside of the support column, and two contact springs are fixedly connected to the end of the positioning tooth away from the transmission worm gear ring.

[0010] Preferably, the inner side of the rotating sleeve is provided with rotating teeth that mesh with the drive gear ring, and the outer surface of the support column is rotatably connected to the inner side of the rotating sleeve.

[0011] Preferably, the opening and closing linkage assembly includes two rotating linkages that are rotatably connected to the drive beam. A positioning moving rod is slidably connected to the outer surface of the rotating linkage, and the end of the positioning moving rod away from the rotating linkage is fixedly connected to the inner side of the grab bucket body.

[0012] Preferably, the rotating link includes a link body rotatably connected to the drive beam. The link body has several parallel positioning grooves extending through it on both sides. A damper is fixedly connected to the inner side of each positioning groove. A sliding column is fixedly connected to the end of the damper away from the positioning groove. The sliding column is slidably connected to the inner side of the positioning groove. A support spring is fixedly connected between the sliding column and the damper. The outer surface of the sliding column is fixedly connected to the outer surface of the nearest positioning moving rod.

[0013] This utility model provides a rotating fixing base. Compared with the prior art, it has the following advantages:

[0014] 1. This rotary adjustable angle grab bucket, through the rotation of the drive worm gear, can drive the transmission worm wheel ring and drive gear ring to rotate, thereby causing the rotating sleeve to rotate, realizing the angle adjustment of the horizontal plane of the entire grab bucket body. When facing edge cargo, no manual assistance or repeated operations are required. The angle of the grab bucket can be directly adjusted to accurately grab the cargo, improve loading and unloading efficiency, and shorten loading and unloading time.

[0015] 2. This rotary adjustable angle grab, through the cooperation of dampers, support springs and sliding columns, can slide the appropriate moving rod on the rotating connecting rod when grabbing irregular goods. Through the action of dampers and support springs, the grab body can adaptively conform to the surface of the goods, so that the two bucket-shaped jaw plates simultaneously conform to the goods and then close to grab them, effectively improving the stability of the grabbing effect and reducing safety hazards. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the rotating fixed base structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the support drive column structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the opening and closing linkage assembly structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the rotating connecting rod structure of this utility model.

[0021] In the diagram: 1. Rotating fixed seat; 11. Support drive column; 111. Support column; 112. Drive worm; 113. Transmission worm wheel ring; 114. Positioning tooth; 115. Fitting spring; 116. Drive gear ring; 12. Support cylinder; 13. Rotating sleeve; 14. Connecting column; 15. Grab bucket support seat; 2. Hydraulic cylinder; 3. Drive beam; 4. Opening and closing linkage assembly; 41. Rotating linkage; 411. Damper; 412. Support spring; 413. Fitting groove; 414. Sliding column; 415. Linkage body; 42. Fitting moving rod; 5. Grab bucket body. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5 This utility model provides a technical solution: a rotary adjustable angle grab bucket, including a rotary fixed base 1, a grab bucket body 5 is provided on the left and right sides of the bottom end of the rotary fixed base 1, a hydraulic cylinder 2 is provided in the middle of the bottom end of the rotary fixed base 1, a drive beam 3 is provided at the bottom end of the hydraulic cylinder 2, and an opening and closing linkage group 4 is provided on both the left and right ends of the drive beam 3, with the end of the opening and closing linkage group 4 away from the drive beam 3 being provided at the top of the grab bucket body 5.

[0024] When the device is working, the hydraulic cylinder 2 moves the drive beam 3 up and down, and the drive beam 3 drives the opening and closing linkage group 4 to move. The opening and closing linkage group 4 realizes the opening and closing of the grab bucket body 5 through linkage. At the same time, the rotating fixed seat 1 can drive the grab bucket body 5 to adjust the angle in the horizontal plane so as to accurately align with the edge of the goods.

[0025] Please see Figure 2The rotating fixed base 1 includes a rotating sleeve 13 fixedly connected to the top of the hydraulic cylinder 2. A support cylinder 12 is rotatably connected inside the rotating sleeve 13. A support drive column 11 is fixedly connected to the middle of the top of the support cylinder 12. A grab support seat 15 is fixedly connected to the top of the grab body 5. Two connecting columns 14 are fixedly connected between the outer surface of the rotating sleeve 13 and the grab support seat 15. The top of the support drive column 11 extends to the outer side of the top of the grab support seat 15.

[0026] The support drive column 11 can drive the rotating sleeve 13 to rotate, thereby rotating the grab bucket support seat 15 and the grab bucket body 5. The connecting column 14 ensures the support and connection between the rotating sleeve 13 and the grab bucket support seat 15. The support drive column 11 extends to the outside of the grab bucket support seat 15, so that the entire device can be connected to the crane, allowing the grab bucket body 5 to adjust its horizontal angle under the drive of the rotating fixed seat 1, and accurately align with the edge of the goods.

[0027] Please see Figure 3 The support drive column 11 includes a support column 111 fixedly connected to the top of the support cylinder 12. A transmission worm gear ring 113 is rotatably connected inside the support column 111. Both sides of the transmission worm gear ring 113 are meshed with drive worms 112 that rotate inside the support drive column 111. A drive motor is provided at one end of the drive worm 112. The two drive worms 112 rotate in opposite directions. A drive gear ring 116 is fixedly connected to the bottom end of the transmission worm gear ring 113. The drive gear ring 116 is rotatably connected inside the support column 111 and its outer surface extends to the outside of the support column 111.

[0028] Please see Figure 3 The transmission worm gear ring 113 has a positioning tooth 114 meshing between every two teeth on the front and rear sides. The outer surface of the positioning tooth 114 is slidably connected to the inside of the support column 111. Two contact springs 115 are fixedly connected to the end of the positioning tooth 114 away from the transmission worm gear ring 113.

[0029] Please see Figures 2-3 The inner side of the rotating sleeve 13 is provided with rotating teeth that mesh with the drive gear ring 116, and the outer surface of the support column 111 is rotatably connected to the inner side of the rotating sleeve 13.

[0030] When the support drive column 11 is working, the two drive worms 112 rotating in opposite directions rotate, driving the transmission worm gear ring 113 meshing with it to rotate inside the support column 111. The transmission worm gear ring 113 drives the drive gear ring 116 at the bottom to rotate. The drive gear ring 116 meshes with the rotating teeth on the inner side of the rotating sleeve 13, causing the rotating sleeve 13 to rotate. The gear meshing between the drive gear ring 116 and the support column 111 can increase the contact friction surface, making the rotation smoother and more stable. At the same time, the positioning teeth 114 on the front and rear sides of the transmission worm gear ring 113 mesh with the teeth of the transmission worm gear ring 113 under the action of the contact spring 115, realizing the positioning of the transmission worm gear ring 113 and ensuring the stable meshing transmission between the drive gear ring 116 and the rotating teeth on the inner side of the rotating sleeve 13.

[0031] Please see Figure 4 The opening and closing linkage group 4 includes two rotating linkages 41 that are rotatably connected to the drive beam 3. The rotating linkage 41 is slidably connected to a positioning moving rod 42. The end of the positioning moving rod 42 away from the rotating linkage 41 is fixedly connected to the inside of the grab bucket body 5.

[0032] When gripping irregular goods, one side jaw plate first contacts the material and generates resistance. At this time, the hydraulic cylinder 2 will continue to drive the drive beam 3 to move upward. At this time, the positioning moving rod 42 will slide on the outer surface of the rotating connecting rod 41 until the other side jaw plate also contacts the goods. Then, the positioning moving rod 42 and the rotating connecting rod 41 are stretched to their longest length to grip the goods.

[0033] Please see Figure 5 The rotating link 41 includes a link body 415 rotatably connected to the drive beam 3. The link body 415 has several parallel positioning grooves 413 extending through it on the left and right sides. A damper 411 is fixedly connected to the inner side of the positioning groove 413. A sliding column 414 is fixedly connected to the end of the damper 411 away from the positioning groove 413. The sliding column 414 is slidably connected to the inner side of the positioning groove 413. A support spring 412 is fixedly connected between the sliding column 414 and the damper 411. The outer surface of the sliding column 414 is fixedly connected to the outer surface of the nearest positioning moving rod 42.

[0034] When the grab grabs irregular cargo, the positioning moving rod 42 will shift due to the shape of the cargo. At this time, the sliding column 414, which is fixedly connected to the outer surface of the positioning moving rod 42, will slide within the positioning groove 413 of the connecting rod body 415. During the sliding process, the support spring 412 provides buffering and restoring elasticity, while the damper 411 plays a role in adjusting the sliding speed and stabilizing the sliding process, so that the positioning moving rod 42 can slide more smoothly on the rotating connecting rod 41, thereby causing the grab body 5 to adaptively conform to the surface of the cargo, allowing the two bucket-shaped jaws of the grab to simultaneously conform to the cargo before closing and grabbing it.

[0035] Please see Figures 1-5At work,

[0036] Using a rotary adjustable angle grab, the drive worm gear 112 is first activated to drive the transmission worm wheel ring 113 and the drive gear ring 116. The drive gear ring 116 drives the rotating sleeve 13 through rotating teeth, causing the grab body 5 to rotate in the horizontal plane and align with the cargo. Then, the hydraulic cylinder 2 is activated to push the drive beam 3 downward, which drives the rotating connecting rod 41 to move. When grabbing irregular cargo, the positioning moving rod 42 slides on the rotating connecting rod 41, the sliding column 414 slides in the positioning groove 413, the support spring 412 provides buffering and restoring force, and the damper 411 adjusts the sliding speed, so that the positioning moving rod 42 drives the grab body 5 to adaptively conform to the cargo. Finally, the grab closes to complete the grab.

[0037] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rotary adjustable angle grab bucket, comprising a rotary fixed base (1), characterized in that: The rotating fixed base (1) has a grab bucket body (5) on the left and right sides of its bottom end. The rotating fixed base (1) has a hydraulic cylinder (2) in the middle of its bottom end. The hydraulic cylinder (2) has a drive beam (3) at its bottom end. The drive beam (3) has an opening and closing linkage group (4) on both its left and right ends. The end of the opening and closing linkage group (4) away from the drive beam (3) is located at the top of the grab bucket body (5).

2. The rotary adjustable angle grab bucket according to claim 1, characterized in that: The rotating fixed base (1) includes a rotating sleeve (13) fixedly connected to the top of the hydraulic cylinder (2). A support cylinder (12) is rotatably connected inside the rotating sleeve (13). A support drive column (11) is fixedly connected to the middle of the top of the support cylinder (12). A grab support seat (15) is rotatably connected to the top of the grab body (5) and fixedly connected to the top of the support cylinder (12). Two connecting columns (14) are fixedly connected between the outer surface of the rotating sleeve (13) and the grab support seat (15). The top of the support drive column (11) extends to the outer side of the top of the grab support seat (15).

3. The rotary adjustable angle grab bucket according to claim 2, characterized in that: The support drive column (11) includes a support column (111) fixedly connected to the top of the support cylinder (12). A transmission worm gear ring (113) is rotatably connected inside the support column (111). The transmission worm gear ring (113) is meshed with drive worms (112) rotating inside the support drive column (111) on both the left and right sides. The two drive worms (112) rotate in opposite directions. A drive gear ring (116) is fixedly connected to the bottom end of the transmission worm gear ring (113). The drive gear ring (116) is rotatably connected inside the support column (111) and its outer surface extends to the outside of the support column (111).

4. The rotary adjustable angle grab bucket according to claim 3, characterized in that: The transmission worm gear ring (113) has a positioning tooth (114) meshing between every two teeth on its front and rear sides. The outer surface of the positioning tooth (114) is slidably connected to the inside of the support column (111). Two contact springs (115) are fixedly connected to the end of the positioning tooth (114) away from the transmission worm gear ring (113).

5. The rotary adjustable angle grab bucket according to claim 4, characterized in that: The inner side of the rotating sleeve (13) is provided with rotating teeth that mesh with the drive gear ring (116), and the outer surface of the support column (111) is rotatably connected to the inner side of the rotating sleeve (13).

6. The rotary adjustable angle grab bucket according to claim 1, characterized in that: The opening and closing linkage assembly (4) includes two rotating linkages (41) that are rotatably connected to the drive beam (3). The rotating linkages (41) are slidably connected to a positioning moving rod (42). The end of the positioning moving rod (42) away from the rotating linkages (41) is fixedly connected to the inside of the grab bucket body (5).

7. The rotary adjustable angle grab bucket according to claim 6, characterized in that: The rotating link (41) includes a link body (415) rotatably connected to the drive beam (3). The link body (415) has several parallel positioning grooves (413) extending through it on the left and right sides. A damper (411) is fixedly connected to the inner side of the positioning groove (413). A sliding column (414) is fixedly connected to the end of the damper (411) away from the positioning groove (413). The sliding column (414) is slidably connected to the inner side of the positioning groove (413). A support spring (412) is fixedly connected between the sliding column (414) and the damper (411). The outer surface of the sliding column (414) is fixedly connected to the outer surface of the nearest positioning moving rod (42).

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