Grab bucket crane

Abstract

The utility model discloses a grab bucket crane which comprises a lifting hook and further comprises a grab bucket unit used for grabbing materials; the lifting unit comprises a lifting assembly connected to the lower end of the lifting hook and used for lifting the grab bucket unit, a clamping assembly connected to the upper end of the grab bucket unit and used for locking the lifting assembly, and a supporting assembly arranged in the clamping assembly and used for supporting the lifting assembly. Under the constraint action of the cushion block, the clamping groove and the guide block, all-directional positioning of the steel wire rope is achieved, installation is convenient, the steel wire rope is not prone to slipping off the grab bucket, and the height can be high.

Description

Technical Field

[0001] The utility model relates to the technical field of grab cranes, and specifically relates to a grab crane. Background Technique

[0002] A grab crane is a common lifting tool, mainly used for the handling and loading and unloading of materials in various industrial and construction fields. It has the characteristics of high efficiency, flexibility and reliability, can improve work efficiency, reduce labor input, and is applicable to different types and sizes of materials;

[0003] However, in the existing grab cranes, the grab is usually connected to the hook of the crane by a steel wire rope, that is, the upper end of the steel wire rope is hung on the hook of the crane, and the lower end is tied to the lifting ring on the top of the grab. Since the steel wire rope is corroded or overstrained after being used for a period of time, it needs to be replaced regularly. The existing connection or welding method of the steel wire rope to the grab is difficult to disassemble and assemble from the grab, which is not conducive to the replacement of the steel wire rope, and the reliability is relatively low, and the situation of the grab slipping off the steel wire rope is likely to occur.

[0004] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a grab crane to solve the problems in the above background technique that the existing connection or welding method of the steel wire rope to the grab is difficult to disassemble and assemble from the grab, which is not conducive to the replacement of the steel wire rope, and the reliability is relatively low, and the situation of the grab slipping off the steel wire rope is likely to occur.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A grab crane, including a hook, and further including:

[0008] A grab unit for grabbing materials;

[0009] A lifting unit, including a lifting component connected to the lower end of the hook for lifting the grab unit, a clamping component connected to the upper end of the grab unit for locking the lifting component, and a support component arranged inside the clamping component for supporting the lifting component.

[0010] Further, the clamping component includes:

[0011] A fixed block fixedly connected to the upper end of the grab unit;

[0012] A first slot arranged at the front end of the fixed block for guiding the lower part of the lifting component;

[0013] A second slot is provided at the front end of the fixed block and above the first slot, and the second slot penetrates through the upper end of the fixed block to the inside of the first slot.

[0014] A clamping groove is provided at the upper end of the first slot and inside the fixed block for accommodating and limiting the lower part of the lifting assembly.

[0015] Further, the lifting assembly includes:

[0016] A clamping rod is slidably inserted up and down inside the clamping groove;

[0017] A guiding block is inserted inside the second slot;

[0018] A steel wire rope is fixedly connected to the upper end of the guiding block;

[0019] A collar is fixedly connected to the upper end of the steel wire rope for sleeving outside the hook.

[0020] Further, the supporting assembly includes:

[0021] A cushion block is slidably inserted inside the first slot for pressing the clamping rod inside the clamping groove, and a circular groove is provided inside the cushion block;

[0022] A limiting block is rotatably inserted inside the circular groove;

[0023] A screw rod has one end fixedly connected to one side of the limiting block, and the other end penetrates through the limiting groove to the outside from the first slot. Threads are provided on the outside of the screw rod, and threaded holes adapted to the threads on the outside of the screw rod are provided inside the fixed block for threaded connection with the screw rod.

[0024] Further, a retreat groove for accommodating the cushion block after retreat is provided inside the fixed block and on one side of the first slot, and the retreat groove is in smooth transition with the first slot.

[0025] Further, the grab unit includes:

[0026] A main beam;

[0027] A top beam is fixedly connected to the lower end of the fixed block and above the main beam, and second hinge parts are tightly provided at both ends of the top beam;

[0028] An oil cylinder is installed between the main beam and the top beam for adjusting the distance between the main beam and the top beam;

[0029] A gear set is rotatably provided at both ends of the main beam;

[0030] The grab members, provided in two sets, are connected to one end of the gear set and are used for grabbing materials.

[0031] The first hinge portion is provided inside the grab member.

[0032] The tie rods, two sets are provided corresponding to each grab member. The upper ends of the tie rods are engaged with the second hinge portion, and the lower ends are engaged with the first hinge portion, and are used for adjusting the opening angle of the grab member.

[0033] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0034] 1. In the present utility model, the collar at the upper end of the steel wire rope is taken out from the hook, and then the screw is rotated. Under the action of the tangential force of the thread between the screw and the threaded hole, the cushion block is driven to move from directly below the clamping rod to the retraction groove. At this time, the guide block is pushed downward, and the guide block drives the clamping rod to move downward from the card slot to the first slot. The guide block is pushed in the direction of the opening of the second slot, so that the guide block is removed along the first slot, completing the disassembly of the steel wire rope, thus facilitating the disassembly of the steel wire rope.

[0035] 2. In the present utility model, the all-round positioning of the steel wire rope is realized under the constraint of the cushion block, the card slot and the guide block, which is convenient for installation. The steel wire rope is not easy to slip off from the grab, and the height can be high. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0037] Figure 2 It is a diagram showing the cooperation relationship between the clamping assembly and the lifting assembly of the present utility model;

[0038] Figure 3 It is a diagram showing the cooperation relationship between the support assembly and the lifting assembly of the present utility model;

[0039] Figure 4 It is a schematic diagram of the structure of the support assembly of the present utility model;

[0040] Figure 5 It is a schematic diagram of the structure of the lifting assembly of the present utility model.

[0041] Reference numerals: 100, lifting hook; 1, grab unit; 11, main beam; 12, oil cylinder; 13, gear set; 14, grab member; 15, first hinge portion; 16, tie rod; 17, second hinge portion; 18, top beam; 2, lifting unit; 21, clamping assembly; 211, fixed block; 212, first slot; 213, second slot; 214, card slot; 215, retraction slot; 216, threaded hole; 22, lifting assembly; 221, clamping rod; 222, guide block; 223, steel wire rope; 224, collar; 23, support assembly; 231, spacer block; 2311, round groove; 232, screw rod; 233, limit block. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0043] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0044] A grab crane, including a lifting hook 100, further including:

[0045] A grab unit 1 for grabbing materials;

[0046] A lifting unit 2, including a lifting assembly 22 connected to the lower end of the lifting hook 100 for lifting the grab unit 1, a clamping assembly 21 connected to the upper end of the grab unit 1 for locking the lifting assembly 22, and a support assembly 23 provided inside the clamping assembly 21 for supporting the lifting assembly 22.

[0047] As an improvement, as Figure 1 , Figure 3 shown, the clamping assembly 21 includes:

[0048] A fixed block 211 fixedly connected to the upper end of the grab unit 1;

[0049] A first slot 212 provided at the front end of the fixed block 211 for guiding the lower part of the lifting assembly 22;

[0050] A second slot 213 provided at the front end of the fixed block 211 and located above the first slot 212, and the second slot 213 penetrates through the fixed block 211 from the upper end of the fixed block 211 to the inside of the first slot 212;

[0051] The card slot 214 is arranged at the upper end of the first slot 212 and inside the fixed block 211, and is used for accommodating and limiting the lower part of the lifting component 22.

[0052] Further, as Figure 2 shown, the lifting component 22 includes;

[0053] The clamping rod 221 is slidably inserted up and down inside the card slot 214;

[0054] The guiding block 222 is inserted inside the second slot 213;

[0055] The steel wire rope 223 is fixedly connected to the upper end of the guiding block 222;

[0056] The collar 224 is fixedly connected to the upper end of the steel wire rope 223 and is used for sleeving outside the lifting hook 100.

[0057] Even further, as Figures 2-4 shown, the support component 23 includes:

[0058] The cushion block 231 is slidably inserted inside the first slot 212 and is used for pressing the clamping rod 221 inside the card slot 214. A circular groove 2311 is provided inside the cushion block 231;

[0059] The limiting block 233 is rotatably inserted inside the circular groove 2311;

[0060] One end of the screw rod 232 is fixedly connected to one side of the limiting block 233, and the other end passes through the limiting groove from the first slot 212 to the outside. Threads are provided on the outside of the screw rod 232, and a threaded hole 216 adapted to the threads on the outside of the screw rod 232 is provided inside the fixed block 211 for threaded connection with the screw rod 232.

[0061] Wherein, a retreat groove 215 for accommodating the cushion block 231 after retreat is provided inside the fixed block 211 and on one side of the first slot 212, and the retreat groove 215 is in smooth transition with the first slot 212.

[0062] As an improvement, as Figure 1 , Figure 5 shown, the grab unit 1 includes:

[0063] The main beam 11;

[0064] The top beam 18 is fixedly connected to the lower end of the fixed block 211 and above the main beam 11. Second hinge parts 17 are tightly arranged at both ends of the top beam 18;

[0065] The oil cylinder 12 is installed between the main beam 11 and the top beam 18 and is used to adjust the distance between the main beam 11 and the top beam 18;

[0066] The gear set 13 is rotatably arranged at both ends of the main beam 11. The gear set 13 consists of two meshing gears, ensuring that when the pull rod 16 pulls the grab member 14, the grab member 14 can maintain the same opening angle;

[0067] There are two groups of grab members 14, which are connected to one end of the gear set 13 and are used to grab materials;

[0068] The first hinge portion 15 is arranged inside the grab member 14;

[0069] There are two groups of pull rods 16 corresponding to each grab member 14. The upper end of the pull rod 16 meshes with the second hinge portion 17, and the lower end meshes with the first hinge portion 15, which is used to adjust the opening angle of the grab member 14.

[0070] It should be added that the hook 100 in the present invention is the upper and lower traction end of the crane. Through the operation of the operator in the cab of the crane, the hook 100 can drive the grab to move to the designated position.

[0071] It should be noted that as Figures 2-4 shown, in the specific implementation process of the present utility model, when the steel wire rope 223 is working normally, the cushion block 231 limits the clamping rod 221 in the card slot 214, so that the card slot 214 realizes all-round positioning under the constraint of the cushion block 231, the card slot 214, and the guiding block 222. When the steel wire rope 223 needs to be replaced, first take out the collar 224 at the upper end of the steel wire rope 223 from the hook 100, and then rotate the screw rod 232. The screw rod 232 drives the cushion block 231 to move from directly below the clamping rod 221 to the retraction groove 215 under the action of the tangential force of the thread between the screw rod 232 and the threaded hole 216. At this time, push the guiding block 222 downward. The guiding block 222 drives the clamping rod 221 to move downward from the card slot 214 to the first slot 212, and push the guiding block 222 in the opening direction of the second slot 213, so that the guiding block 222 is removed along the first slot 212, completing the disassembly work of the steel wire rope 223, thus facilitating the disassembly effect of the steel wire rope 223;

[0072] As Figure 3As shown in the figure, subsequently, the guide block 222 corresponding to the new wire rope 223 is inserted into the second slot 213. At the same time, the clamping rod 221 and the guide block 222 are inserted into the first slot 212. When the clamping rod 221 corresponds to directly below the card slot 214, the new wire rope 223 is pulled upward. The wire rope 223 moves from the first slot 212 to the inside of the card slot 214 through the guide block 222. The screw rod 232 is rotated in the reverse direction, and the screw rod 232 pushes the cushion block 231 to move from the inside of the retraction groove 215 to directly below the clamping rod 221, completing the replacement of the new wire rope 223. Under the constraint of the cushion block 231, the card slot 214, and the guide block 222, all-round positioning of the wire rope 223 is realized, which is convenient for installation. The wire rope 223 is not easy to slip off from the grab, and the height can be high;

[0073] As Figure 1 shown in the figure, after the replacement of the wire rope 223 is completed, the collar 224 corresponding to the new wire rope 223 is sleeved outside the hook 100. When the grab member 14 grabs materials, the operator remotely controls the telescopic movement of the oil cylinder 12 in the cab to control the pushing and pulling state of the pull rod 16 on the grab member 14, so that the materials are grabbed by the grab member 14 and placed at the specified position.

[0074] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

[0075] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grab crane, comprising a hook (100), characterized in that, It further includes: A grab unit (1) for grabbing materials; A lifting unit (2), including a lifting assembly (22) connected to the lower end of the hook (100) for lifting the grab unit (1), a clamping assembly (21) connected to the upper end of the grab unit (1) for locking the lifting assembly (22), and a support assembly (23) provided inside the clamping assembly (21) for supporting the lifting assembly (22).

2. The grab crane according to claim 1, wherein: The clamping assembly (21) includes: A fixed block (211) fixedly connected to the upper end of the grab unit (1); A first slot (212) provided at the front end of the fixed block (211) for guiding the lower part of the lifting assembly (22); A second slot (213) provided at the front end of the fixed block (211) and located above the first slot (212), and the second slot (213) penetrates from the upper end of the fixed block (211) to the inside of the first slot (212); A clamping slot (214) provided at the upper end of the first slot (212) and located inside the fixed block (211) for accommodating and limiting the lower part of the lifting assembly (22).

3. The grab crane according to claim 2, wherein: The lifting assembly (22) includes; A clamping rod (221) slidably inserted up and down inside the clamping slot (214); A guiding block (222) inserted inside the second slot (213); A steel wire rope (223) fixedly connected to the upper end of the guiding block (222); A collar (224) fixedly connected to the upper end of the steel wire rope (223) for sleeving outside the hook (100).

4. The grab crane according to claim 3, wherein: The support assembly (23) includes: A cushion block (231) slidably inserted inside the first slot (212) for pressing the clamping rod (221) tightly inside the clamping slot (214), and a circular groove (2311) is provided inside the cushion block (231); A limiting block (233) rotatably inserted inside the circular groove (2311); A screw rod (232), one end of which is fixedly connected to one side of the limiting block (233), and the other end penetrates from the first slot (212) through the limiting slot to the outside. Threads are provided on the outside of the screw rod (232), and a threaded hole (216) adapted to the external threads of the screw rod (232) is provided inside the fixed block (211) for threaded connection with the screw rod (232).

5. The grab crane according to claim 4, wherein: A retreat groove (215) for accommodating the retreated cushion block (231) is provided inside the fixed block (211) and on one side of the first slot (212), and the retreat groove (215) is in smooth transition with the first slot (212).

6. The grab crane according to claim 2, wherein: The grab unit (1) includes: A main beam (11); The top beam (18) is fixedly connected to the lower end of the fixed block (211) and is located above the main beam (11). The two ends of the top beam (18) are tightly provided with second hinge parts (17). The oil cylinder (12) is installed between the main beam (11) and the top beam (18) and is used to adjust the distance between the main beam (11) and the top beam (18). The gear set (13) is rotatably arranged at both ends of the main beam (11). There are two sets of grab members (14), which are connected to one end of the gear set (13) and are used to grab materials. The first hinge part (15) is arranged inside the grab member (14). There are two sets of tie rods (16) corresponding to each grab member (14). The upper end of the tie rod (16) meshes with the second hinge part (17), and the lower end meshes with the first hinge part (15), and is used to adjust the opening angle of the grab member (14).

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