Clamping jaw device of crane for paper bag production

Abstract

The utility model discloses a clamping jaw device of a crane for paper bag production, which comprises two first jaws, a mooring rope and a limiting piece, the number of the first jaws is two, the two first jaws are oppositely arranged, and the two first jaws are used for clamping a paper roll; the cable sequentially penetrates through the two first claws and is used for hanging the two first claws, the first claws can slide on the cable, and the two ends of the cable are connected to hooks of a crane in a hung mode; the limiting piece is arranged on the cable, located between the two first claws and used for abutting against and limiting the two first claws. According to the clamping jaw device of the crane for paper bag production, the two first jaws can be limited within a certain distance when the clamping jaw device is not used, the carrying distance of the two first jaws before a paper roll is clamped is reduced, and the operation labor intensity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of paper bag production equipment, in particular to a clamping claw device of a crane used for paper bag production. Background Art

[0002] In the production process of paper bags, the raw material for making paper bags is paper rolls rolled into rolls.

[0003] In the related art, paper rolls are generally relatively large, and usually a crane is required to transport, move and load the paper rolls.

[0004] Structurally, the crane has a claw device, which is used to clamp the paper roll.

[0005] Specifically, the claw device includes two first claws and a cable for hanging the two first claws. The cable is hung on a hook of a crane. When in use, the two first claws respectively clamp the two ends of the paper roll, and then the crane drives the claw device to lift. After the two first claws are subjected to force, they move closer to each other to clamp the paper roll.

[0006] However, the two first claws of the existing clamping claw device will approach each other when being hoisted by the crane and idle. Before clamping the paper roll each time, the two first claws must be moved a long distance away from each other to clamp the two ends of the paper roll, which is labor-intensive. Utility Model Content

[0007] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a clamping claw device for a paper bag production crane, which can limit two first claws to a certain distance when idle, reduce the moving distance of the two first claws before clamping the paper roll, and reduce the labor intensity of operation.

[0008] According to the first aspect of the utility model, a clamping claw device of a crane for paper bag production includes: two first claws, which are arranged opposite to each other and are used to clamp a paper roll; a cable that passes through the two first claws in sequence and is used to suspend the two first claws, the first claws can slide on the cable, and the two ends of the cable are hung on hooks of the crane; a limiting member is arranged on the cable and is located between the two first claws, and is used to limit the abutment of the two first claws.

[0009] According to the embodiment of the utility model, a claw device of a crane for paper bag production has at least the following beneficial effects:

[0010] 1. The utility model provides two first claws, which are arranged opposite to each other and are used to clamp the paper roll, so that the clamping claw device can firmly clamp the paper roll.

[0011] 2. The utility model sets a cable, which passes through the two first claws in sequence. The cable is used to suspend the two first claws, and the first claws can slide on the cable. Both ends of the cable are hung on the hooks of the crane. Therefore, on the one hand, the crane can suspend the two first claws with the cable, and on the other hand, after the two first claws clamp the paper roll, the paper roll supports the two first claws, so that the two first claws stretch the cable. When the crane drives the clamping claw device to lift upward, the two first claws are affected by the gravity of the paper roll, so that the two first claws pull the cable downward, so that the cable is tightened and applies inward pulling force to the two first claws, thereby increasing the clamping force of the two first claws on the paper roll, so that the two first claws clamp the paper roll more firmly.

[0012] 3. The utility model arranges a limit piece on the cable, and the limit piece is located between the two first claws. The limit piece is used to limit the contact of the two first claws. Therefore, when the two first claws are lifted by the crane and idle, the limit piece can support and limit the two first claws at a certain distance, thereby reducing the moving distance of the two first claws before clamping the paper roll and reducing the labor intensity of the operation.

[0013] According to some embodiments of the present utility model, the limiting member is slidably connected to the cable.

[0014] According to some embodiments of the utility model, the limiting member includes a first tube and a second tube, one end of the first tube is threadedly connected to one end of the second tube, the other end of the first tube is used to abut one of the first claws, and the other end of the second tube is used to abut another of the first claws.

[0015] According to some embodiments of the utility model, one end of the first tube has an external threaded portion, and one end of the second tube has an internal threaded portion, the external threaded portion and the internal threaded portion are threadedly connected, the external threaded portion is threadedly connected with a first nut, and the first nut abuts against the second tube to limit the position.

[0016] According to some embodiments of the utility model, the first claw has a first groove, the first groove accommodates the cable to pass through, a first shaft is arranged at the top of the first groove, a first wheel is rotatably arranged on the first shaft, and the first wheel is used to abut against the cable.

[0017] According to some embodiments of the present invention, the outer circumferential surface of the first wheel is provided with a circumferentially extending annular groove, and the annular groove is used to limit the position of the cable.

[0018] According to some embodiments of the present invention, the first claw has a mounting portion that protrudes in a direction away from the other first claw, the first shaft is arranged on the mounting portion, and a side of the first wheel close to the other first claw is recessed in the first groove.

[0019] According to some embodiments of the present utility model, the first claw is L-shaped, and the first claw includes a first plate portion and a second plate portion that are perpendicular to each other, the first plate portion is connected to the cable, the second plate portion is used to abut one side of the paper roll, and the first plate portion can fit the top of the paper roll.

[0020] According to some embodiments of the utility model, a plurality of protrusions are provided on one side of the second plate portion close to the other first claw, and the plurality of protrusions rub against the paper roll to prevent slipping.

[0021] According to some embodiments of the utility model, the second plate portion is threadedly connected with a first bolt, the first bolt has a nut, the nut is located on a side of the second plate portion close to the other first claw, and the nut is used to form the convex portion.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic structural diagram of a claw device of a crane for paper bag production according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 A schematic diagram of the structure of the first claw is shown;

[0026] Figure 3 for Figure 1 A cross-sectional view of the stopper shown;

[0027] Figure 4 The utility model is a schematic structural diagram of a state in which a clamping claw device of a crane for paper bag production clamps a paper roll.

[0028] Figure markings: 100-first claw, 110-cable, 120-hook, 130-limiting member, 140-first tube, 150-second tube, 160-external threaded portion, 170-internal threaded portion, 180-first nut, 190-first groove, 200-first shaft, 210-first wheel, 220-annular groove, 230-installing portion, 240-first plate portion, 250-second plate portion, 260-convex portion. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] A claw device of a crane for paper bag production according to an embodiment of the utility model will be described below in conjunction with the accompanying drawings.

[0034] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A clamping claw device of a crane for paper bag production according to an embodiment of the utility model includes a first claw 100, a cable 110 and a limiting member 130.

[0035] As for the first claws 100, two first claws 100 are provided, and the two first claws 100 are arranged opposite to each other. The two first claws 100 are used to clamp the paper roll, so that the clamping claw device can clamp the paper roll stably.

[0036] In some specific embodiments, the first claw 100 is L-shaped, and the first claw 100 includes a first plate portion 240 and a second plate portion 250 that are perpendicular to each other. The first plate portion 240 is connected to the cable 110, and the second plate portion 250 is used to abut one side of the paper roll. The first plate portion 240 can fit the top of the paper roll.

[0037] It can be understood that by setting the first claw 100 to be L-shaped, the first claw 100 includes a first plate portion 240 and a second plate portion 250 that are perpendicular to each other. Therefore, when the first plate clamps the paper roll, the first plate portion 240 fits the top of the paper roll and the second plate portion 250 abuts against one side of the paper roll, so that the first claw 100 fits the paper roll more closely, and thus, the first claw 100 clamps the paper roll more firmly.

[0038] Furthermore, a plurality of protrusions 260 are provided on one side of the second plate portion 250 close to the other first claw 100, and the plurality of protrusions 260 rub against the paper roll to prevent slipping, so that the protrusions 260 can abut against the end surface of the paper roll for friction, thereby increasing the friction resistance between the first claw 100 and the paper roll when moving up and down, thereby making the first claw 100 clamp the paper roll more firmly.

[0039] Specifically, the second plate portion 250 is threadedly connected with a first bolt, and the first bolt has a nut, which is located on a side of the second plate portion 250 close to the other first claw 100, and the nut is used to form a protrusion 260, thereby facilitating the installation and removal of the first bolt.

[0040] As for the cable 110, the cable 110 passes through the two first claws 100 in sequence, and the cable 110 is used to suspend the two first claws 100. The first claws 100 can slide on the cable 110, and the two ends of the cable 110 are hung on the hooks 120 of the crane. Therefore, on the one hand, the crane can suspend the two first claws 100 by the cable 110, and on the other hand, after the two first claws 100 clamp the paper roll, the paper roll supports the two first claws 100, so that the two first claws 100 open the cable 110. When the crane drives the clamping claw device to lift upward, the two first claws 100 are affected by the gravity of the paper roll, so that the two first claws 100 pull the cable 110 downward, so that the cable 110 is tightened and applies an inward pulling force to the two first claws 100, thereby increasing the clamping force of the two first claws 100 on the paper roll, so that the two first claws 100 clamp the paper roll more firmly.

[0041] In some specific embodiments, the first claw 100 has a first groove 190, the first groove 190 accommodates the cable 110 to pass through, and a first shaft 200 is arranged on the top of the first groove 190. A first wheel 210 is rotatably arranged on the first shaft 200, and the first wheel 210 is used to abut the cable 110. Therefore, when the first claw 100 slides on the cable 110, the first wheel 210 can abut the supporting cable 110 and roll along the cable 110, thereby reducing the friction resistance between the cable 110 and the first claw 100, and reducing the wear of the first claw 100 and the cable 110.

[0042] Furthermore, the outer circumferential surface of the first wheel 210 is provided with a circumferentially extending annular groove 220 for limiting the cable 110 , so that the annular groove 220 can limit the cable 110 on the first wheel 210 to prevent the cable 110 from deviating and rubbing against the groove wall of the first groove 190 .

[0043] In some specific embodiments, the first claw 100 has a mounting portion 230 protruding in a direction away from the other first claw 100 , the first shaft 200 is disposed on the mounting portion 230 , and a side of the first wheel 210 close to the other first claw 100 is recessed in the first groove 190 .

[0044] It can be understood that the first claw 100 sets the first shaft 200 on the mounting portion 230 by providing a mounting portion 230 that protrudes in the direction away from the other first claw 100, so that the first wheel 210 can be located on the side of the first claw 100 away from the other first claw 100, thereby making the side of the first wheel 210 close to the other first claw 100 recessed in the first groove 190, avoiding the first wheel 210 from protruding from the side wall of the first claw 100 close to the other first claw 100, and further, facilitating the first wheel 210 to avoid the paper roll when the first claw 100 abuts against and clamps the paper roll, thereby avoiding the paper roll interfering with the rotation of the first wheel 210.

[0045] The limit member 130 is arranged on the cable 110 and is located between the two first claws 100. The limit member 130 is used to limit the abutment of the two first claws 100. Thus, when the two first claws 100 are lifted by the crane and idle, the limit member 130 can support and limit the two first claws 100 at a certain distance, thereby reducing the moving distance of the two first claws 100 before clamping the paper roll and reducing the labor intensity of the operation.

[0046] In some specific embodiments, the limiting member 130 is slidably connected to the cable 110 , thereby facilitating the change of the relative position of the limiting member 130 and the cable 110 .

[0047] In some specific embodiments, the limit member 130 includes a first tube 140 and a second tube 150, one end of the first tube 140 is threadedly connected to one end of the second tube 150, the other end of the first tube 140 is used to abut against one first claw 100, and the other end of the second tube 150 is used to abut against another first claw 100.

[0048] It is understandable that by screwing the first tube 140 and the second tube 150 together, the length of the limiting member 130 can be adjusted, thereby facilitating the adjustment of the limiting distance between the two first claws 100 by the limiting member 130 .

[0049] Specifically, the inner side of the first tube 140 and the inner side of the second tube 150 accommodate the cable 110 to pass therethrough.

[0050] Furthermore, one end of the first tube 140 has an external threaded portion 160, and one end of the second tube 150 has an internal threaded portion 170. The external threaded portion 160 and the internal threaded portion 170 are threadedly connected. The external threaded portion 160 is threadedly connected with a first nut 180, and the first nut 180 abuts against the second tube 150 to limit the position. Therefore, when it is necessary to adjust the thread engagement depth between the first tube 140 and the second tube 150, the first nut 180 can be loosened so that the internal threaded portion 170 and the external threaded portion 160 can be freely screwed together. After the thread engagement depth between the first tube 140 and the second tube 150 is adjusted, the first nut 180 can be abutted against the second tube 150, so that the first nut 180 can limit the second tube 150, thereby making the relative position of the first tube 140 and the second tube 150 more stable.

[0051] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A claw device for a crane for paper bag production, characterized in that: include: Two first claws (100) are provided, the two first claws (100) are arranged opposite to each other, and the two first claws (100) are used for clamping the paper roll; A cable (110) passes through the two first claws (100) in sequence and is used to hang the two first claws (100). The first claws (100) can slide on the cable (110). Both ends of the cable (110) are hung on the hooks (120) of the crane. A limiting member (130) is arranged on the cable (110) and is located between the two first claws (100), and is used for limiting the abutment of the two first claws (100).

2. The claw device of a crane for paper bag production according to claim 1, characterized in that: The limiting member (130) is slidably connected to the cable (110).

3. The claw device of a crane for paper bag production according to claim 1, characterized in that: The limiting member (130) comprises a first tube (140) and a second tube (150), one end of the first tube (140) is threadedly connected to one end of the second tube (150), the other end of the first tube (140) is used to abut against one of the first claws (100), and the other end of the second tube (150) is used to abut against another of the first claws (100).

4. The claw device of a crane for paper bag production according to claim 3, characterized in that: One end of the first tube (140) has an external threaded portion (160), and one end of the second tube (150) has an internal threaded portion (170). The external threaded portion (160) and the internal threaded portion (170) are threadedly connected. The external threaded portion (160) is threadedly connected with a first nut (180). The first nut (180) abuts against the second tube (150) to limit position.

5. The claw device of a crane for paper bag production according to claim 1, characterized in that: The first claw (100) has a first groove (190) for accommodating the cable (110) to pass through, a first shaft (200) is arranged at the top of the first groove (190), a first wheel (210) is rotatably arranged on the first shaft (200), and the first wheel (210) is used to abut against the cable (110).

6. The claw device of a crane for paper bag production according to claim 5, characterized in that: The outer circumferential surface of the first wheel (210) is provided with a circumferentially extending annular groove (220), and the annular groove (220) is used to limit the position of the cable (110).

7. The claw device of a crane for paper bag production according to claim 6, characterized in that: The first claw (100) has a mounting portion (230) protruding in a direction away from the other first claw (100), the first shaft (200) is arranged on the mounting portion (230), and the side of the first wheel (210) close to the other first claw (100) is recessed in the first groove (190).

8. The claw device of a crane for paper bag production according to claim 1, characterized in that: The first claw (100) is L-shaped and comprises a first plate portion (240) and a second plate portion (250) which are perpendicular to each other. The first plate portion (240) is connected to the cable (110), and the second plate portion (250) is used to abut against one side of the paper roll. The first plate portion (240) can fit the top of the paper roll.

9. The claw device of a crane for paper bag production according to claim 8, characterized in that: A plurality of convex parts (260) are arranged on one side of the second plate part (250) close to the other first claw (100), and the plurality of convex parts (260) rub against the paper roll to prevent slipping.

10. The claw device of a crane for paper bag production according to claim 9, characterized in that: The second plate portion (250) is threadedly connected with a first bolt, and the first bolt has a nut. The nut is located on a side of the second plate portion (250) close to the other first claw (100), and the nut is used to form the convex portion (260).

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