Claw device for crane machine and crane machine

Abstract

A claw device for a crane machine, including an adjustment assembly and an actuating assembly. The adjustment assembly includes a fixed disk and connecting rods; the actuating assembly includes a pivot plate disposed and clamping rods; a viewing window is formed between each adjacent two clamping rods. Each clamping rod includes a connecting segment, a fixed segment, and a holding segment that are sequentially connected; the connecting segment is movably connected to the pivot plate; the holding segment extends toward the center axis of the pivot plate; the first holding surface of the holding segment is connected to the first clamping surface of the fixed segment, and the two are arranged at an angle. Two ends of each connecting rod are connected to the fixed disk and the connecting segment, respectively.

What is claimed is: 
     
         1 . A claw device for a crane machine, comprising an adjustment assembly and an actuating assembly movably connected to the adjustment assembly;
 wherein the adjustment assembly comprises a fixed disk and at least two connecting rods spaced apart along an outer peripheral edge of the fixed disk;   the actuating assembly comprises a pivot plate disposed below the fixed disk and at least two clamping rods spaced apart along an outer peripheral edge of the pivot plate; a viewing window is formed between each adjacent two of the at least two clamping rods;   each clamping rod comprises a connecting segment, a fixed segment, and a holding segment that are sequentially connected; the connecting segment is movably connected to the pivot plate; the fixed segment comprises a first clamping surface toward a center axis of the pivot plate;   the holding segment extends toward the center axis of the pivot plate from a lower end of the fixed segment;   the holding segment comprises a first holding surface toward the center axis of the pivot plate; the first holding surface is connected to the first clamping surface, and the first holding surface and the first clamping surface are arranged at an angle;   an end of each connecting rod is movably connected to the fixed disk, and the other end of the connecting rod is movably connected to the connecting segment of a corresponding clamping rod.   
     
     
         2 . The claw device according to  claim 1 , wherein a width direction of the first holding surface intersects with an extension direction of the holding segment;
 a width of the first holding surface gradually increases along the extension direction of the holding segment away from the fixed segment.   
     
     
         3 . The claw device according to  claim 2 , wherein the claw device comprises a pallet detachably arranged on the fixed segment; the pallet comprises a clamping portion and a holding portion connected to a lower side of the clamping portion;
 the clamping portion comprises a second clamping surface extending along a width direction of the first clamping surface; a width of the second clamping surface is greater than a width of the first clamping surface;   the holding portion comprises a second holding surface extending along the width direction of the first holding surface; a width of the second holding surface is greater than the width of the first holding surface;   a flat surface on the pallet that is back away from the second holding surface is attached to the first holding surface.   
     
     
         4 . The claw device according to  claim 3 , wherein a partial region of the pallet is raised to form a mounting seat, and the mounting seat defines a mounting groove; an inner diameter of the mounting groove is gradually decreased along a length direction of the clamping rod, and a minimum inner diameter of the mounting groove is less than or equal to an outer diameter of the fixed segment;
 the fixed segment is detachably arranged in the mounting groove.   
     
     
         5 . The claw device according to  claim 1 , wherein the fixed disk defines a first adjustment hole and a fixing hole, and the first adjustment hole and the fixing hole both pass through the fixed disk in an up-down direction; the pivot plate defines a second adjustment hole, and the second adjustment hole passes through the pivot plate in the up-down direction;
 a gravity center of the fixed disk is located in the first adjustment hole, and a projection of the gravity center of the fixed disk falls within the second adjustment hole.   
     
     
         6 . The claw device according to  claim 5 , wherein the claw device further comprises a limiting column; the limiting column defines a limiting hole, and the limiting hole runs through the limiting column in the up-down direction; the limiting hole is arranged with a mounting notch, and a width of the mounting notch is less than an inner diameter of the limiting hole; wherein,
 a lower part of the fixing hole corresponds to the limiting column, and am aperture of the fixing hole is greater than an aperture of the limiting hole; and/or   another the limiting column is arranged corresponding to a lower side of the second adjustment hole, and an aperture of the second adjustment hole is greater than an aperture of the limiting hole.   
     
     
         7 . The claw device according to  claim 6 , wherein a lower surface of the fixed disk defines a first accommodation groove; a lower end of the fixing hole runs through the first accommodation groove, and the limiting column is arranged in the first accommodation groove; a sidewall surface of the first accommodation groove abuts against an outer peripheral surface of the limiting column and closes or seals the mounting notch of the limiting column;
 a lower surface of the pivot plate defines a second accommodation groove; a lower end of the second adjustment hole runs through the second accommodation groove, and the other limiting column is arranged in the second accommodation groove; a sidewall surface of the second accommodation groove abuts against an outer peripheral surface of the other limiting column and closes or seals the mounting notch of the other limiting column.   
     
     
         8 . The claw device according to  claim 5 , wherein the fixed disk is further arranged with a connecting channel that connects the fixing hole and the first adjustment hole, and the connecting channel runs through the fixed disk in the up-down direction. 
     
     
         9 . The claw device according to  claim 1 , wherein the pivot plate is arranged with a counterweight member, and a gravity center of the counterweight member coincides with a gravity center of the pivot plate in an up-down direction. 
     
     
         10 . The claw device according to  claim 1 , wherein the adjustment assembly comprises at least two pairs of first tabs spaced apart along the outer peripheral edge of the fixed disk and a first rotating shaft connecting each pair of the at least two pairs of first tabs; a corresponding connecting rod defines a first shaft hole at an end near the fixed disk, and a first notch is defined on an inner side of the connecting rod corresponding to the first shaft hole; the first notch is in communication with the first shaft hole; the first rotating shaft is rotatably arranged in the first shaft hole from the first notch; and/or
 the actuating assembly further comprises two second tabs disposed opposite each other on the connecting segment of a corresponding clamping rod and a second rotating shaft connecting the two second tabs; the corresponding connecting rod defines a second shaft hole at an end near the connecting segment, and a second notch is defined on an inner side of the corresponding connecting rod corresponding to the second shaft hole; the second notch is in communication with the second shaft hole; the second rotating shaft is rotatably arranged in the second shaft hole from the second notch.   
     
     
         11 . The claw device according to  claim 1 , wherein each of sides of the clamping rod adjacent to the first holding surface defines a plurality of first grooves spaced apart along a length direction of the clamping rod; and/or, each of opposite sides of the connecting rod defines a plurality of second grooves spaced apart along a length direction of the connecting rod. 
     
     
         12 . A crane machine, comprising a claw device, a driving device, and a rope;
 wherein the claw device comprises an adjustment assembly and an actuating assembly movably connected to the adjustment assembly; the adjustment assembly comprises a fixed disk and at least two connecting rods spaced apart along an outer peripheral edge of the fixed disk; the actuating assembly comprises a pivot plate disposed below the fixed disk and at least two clamping rods spaced apart along an outer peripheral edge of the pivot plate; a viewing window is formed between each adjacent two of the at least two clamping rods;   each clamping rod comprises a connecting segment, a fixed segment, and a holding segment that are sequentially connected; the connecting segment is movably connected to the pivot plate; the fixed segment comprises a first clamping surface toward a center axis of the pivot plate;   the holding segment extends toward the center axis of the pivot plate from a lower end of the fixed segment; the holding segment comprises a first holding surface toward the center axis of the pivot plate; the first holding surface is connected to the first clamping surface, and the first holding surface and the first clamping surface are arranged at an angle; an end of each connecting rod is movably connected to the fixed disk, and the other end of the connecting rod is movably connected to the connecting segment of a corresponding clamping rod;   wherein the rope connects the claw device and the driving device; the driving device is configured to cause the fixed disk and the pivot plate of the claw device to be close to each other or far away from each other by driving the fixing rope;   in condition of the fixed disk and the pivot plate of the claw device being close to each other, the at least two clamping rods of the claw device are close to each other;   in condition of the fixed disk and the pivot plate of the claw device being far away from each other, the at least two clamping rods of the claw device are far away from each other.