CN112645212B - Special opening and closing rope balancing device for door machine log grab bucket operation - Google Patents
Special opening and closing rope balancing device for door machine log grab bucket operation Download PDFInfo
- Publication number
- CN112645212B CN112645212B CN202011408829.7A CN202011408829A CN112645212B CN 112645212 B CN112645212 B CN 112645212B CN 202011408829 A CN202011408829 A CN 202011408829A CN 112645212 B CN112645212 B CN 112645212B
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- top frame
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- frame
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- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 19
- 239000010959 steel Substances 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000004804 winding Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C3/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith and intended primarily for transmitting lifting forces to loose materials; Grabs
- B66C3/12—Grabs actuated by two or more ropes
Abstract
The special opening and closing rope balancing device for the operation of the log grab bucket of the door machine comprises a top frame, a center plate, a bottom frame, a hanging ring, a center shaft, an embedded piece, an end cover, a first bolt and a second bolt; lifting lugs are arranged on the top surfaces of the two ends of the top frame; the center plate is arranged at the center of the top side of the top frame and comprises a first disc and a second disc, the center plate is assembled and fixed through a first bolt, and the center plate is assembled with the top frame through a second bolt; the underframe is arranged at the center of the center plate; the central shaft comprises a rotating section and a limiting section; the bottom frame and the central shaft are rotatably arranged, and the central disc and the top frame are in limit fixation; the end covers are arranged on the outer wall surfaces of the two sides of the top frame, the fixing studs penetrate through the flanges, the end covers are fixed with the top frame by matching nuts, and the end covers limit the central shaft. The invention can keep the opening and closing steel wire rope in a stable state for lifting, effectively prevent the steel wire rope from winding and knotting, and has good process efficiency in production; the device itself has good structural strength and usability.
Description
Technical Field
The invention relates to the technical field of hoisting devices, in particular to a special opening and closing rope balancing device for door machine log grab bucket operation.
Background
The door machine is connected with the lifting appliance by adopting an anti-rotation sleeve or a shackle for direct connection, the door machine is often wound by a steel wire rope in the operation process, and various potential safety hazards are left, such as wire rope winding and lifting are extremely easy to cause the phenomena of wire rope jump of a winding drum, wire rope jump at the position of a trunk bridge pulley, aggravated wire rope abrasion, wire breakage, strand breakage and the like. In order to avoid winding and lifting of the steel wire rope, the operation of dropping, opening and closing for many times is needed in the operation process of a door machine driver, the single pick-and-place time is increased, the production efficiency is affected, and the operation risk and the maintenance cost are increased. The balance frame structure is arranged at the opening and closing rope, the balance frame has good strength, the balance frame structure can effectively adjust the balanced stress of the opening and closing rope, and the damage of the opening and closing rope in the operation process is reduced.
Disclosure of Invention
In order to solve the problems, the invention discloses a special opening and closing rope balancing device for the operation of a log grab bucket of a gantry crane, which has the following specific technical scheme: the special opening and closing rope balancing device for the operation of the log grab bucket of the door machine comprises a top frame, a center plate, a bottom frame, a hanging ring, a center shaft, an embedded piece, an end cover, a first bolt and a second bolt;
the centers of two side wall surfaces of the top frame are in a through hole shape to form a top frame through hole, and two sides of each side of the top frame through hole are in a notch shape to form a top frame limiting groove; the outer side wall surface of each side of the top frame through hole is provided with a fixed stud, and the fixed studs are welded and vertically fixed with the wall surface of the top frame; a top frame assembly hole is formed in the top end of the side wall surface of the top frame; the two sides of the top surface of the top frame are provided with top frame rotating shafts which are rotatably arranged with the top frame; the middle end side wall of the top frame rotating shaft is provided with a reset rod, the reset rod is vertically fixed with the top frame rotating shaft, the side wall surface of the reset rod circumferentially takes a convex structure to form a reset ring, and the reset ring is fixedly arranged with the reset rod; lifting lugs are arranged on the top surfaces of two ends of the top frame and are vertically fixed with the top frame;
the center plate is arranged at the center of the top side of the top frame and comprises a first disc and a second disc, the centers of the first disc and the second disc are all in a through hole shape to form a center plate through hole, two sides of the center plate through hole at each side are in a notch shape to form a center plate limiting groove, center plate assembly holes are circumferentially arranged on the outer rings of the first disc and the second disc, and center plate sliding holes are arranged on the bottom sides of the first disc and the second disc; a first abutting block is arranged on one side wall surface of the first disc, the first abutting block is fixedly arranged with the first disc, a second abutting block is also arranged on one side wall surface of the first disc, the second abutting block is fixedly arranged with the first disc, and the central disc assembly hole penetrates through the first abutting block and the second abutting block respectively; the first disc and the second disc are oppositely arranged, the first abutting block and the second abutting block are abutted against the side wall surface of the second disc, the first bolt penetrates through the center disc assembly holes on the two sides of the first disc and the second disc to realize the assembly and fixation of the center disc, and the second bolt penetrates through the top frame assembly hole and the top side center disc assembly hole to realize the assembly of the center disc and the top frame;
the bottom frame is arranged at the center of the center plate, the middle end of the bottom frame is embedded between the first disc and the second disc, the bottom end of the bottom frame extends out of the bottom end of the center plate, and the top end of the top frame extends out of the top ends of two sides of the center plate; the center of the underframe is in a through hole shape to form an underframe through hole; limiting shafts are arranged on two wall surfaces of the bottom end of the underframe, each side of the limiting shafts is vertically fixed with the underframe, and the limiting shafts extend into the sliding holes of the central disc; the top ends of two sides of the underframe are of hollow structures to form a reset sliding cavity, two ends of the reset sliding cavity are of hollow structures to form a reset sliding groove, the rotating shaft of the top frame penetrates through the reset sliding groove, the reset rod stretches into the reset sliding cavity, and the reset ring and the reset sliding cavity are slidably arranged; a reset spring is arranged in the reset sliding cavity, one end of the reset spring is propped against the end face of the reset sliding cavity, and one end of the reset spring is propped against the end face of the reset ring; the hanging rings are arranged at two ends of the bottom side of the underframe;
the central shaft comprises a rotating section and a limiting section, the limiting section is arranged on the end faces of the two ends of the rotating section, and the two limiting sections and the rotating section are arranged coaxially and are of an integrated structure; the two side walls of each rotating section are in a groove-shaped structure to form a central shaft clamping groove; the central shaft clamping grooves of the rotating sections at each end are oppositely arranged; the embedded piece can be embedded into the central shaft clamping groove for fixation; the central shaft is arranged at the bottom end of the underframe, the rotating section is embedded in the underframe through hole, the limiting sections at the two ends respectively penetrate through the central disc through hole and the top frame through hole in sequence, the embedded parts are respectively embedded in the central disc limiting groove and the top frame limiting groove, the underframe and the central shaft are rotatably arranged, and the central disc, the top frame and the central shaft are in limiting fixation;
the end covers are arranged on the outer wall surfaces of the two sides of the top frame, each end cover comprises a sleeve cap and a flange, and each flange is arranged on the outer wall surface of one end of each sleeve cap and fixedly arranged with each sleeve cap; the center of sleeve cap is the recess form, forms the nest hole, the sleeve hole with the flange link up the setting, the recess form is personally submitted to the both sides wall of nest hole, form the nest groove, the flange laminate respectively in the both sides wall of roof-rack, spacing section stretches into in the nest hole, the gomphosis piece is embedded respectively in the nest groove, the fixed double-screw bolt runs through the flange to cooperate the nut realization the end cover with the roof-rack is fixed, the end cover is right the center pin is spacing.
Further, the cross section of the top frame is of an inverted U-shaped structure, the bottom edges of the two sides of the top frame are of a convex structure and are of an arc shape, and the top frame through hole is arranged in the arc center of each side of the top frame; the top surface both ends of roof-rack are protruding form, the roof-rack pivot set up in the protruding department in both ends of roof-rack.
Further, the inner top surface of the top frame is provided with reinforcing sheets, the reinforcing sheets are arranged in a transverse array, and a plurality of reinforcing sheets are supported on the inner side wall of the top frame and welded and fixed with the inner wall surface of the top frame.
Further, the first abutting block is arranged at the top end of the side wall of the first disc, the first abutting block is in an arc-shaped structure, and the shape of the first abutting block is matched with that of the first disc.
Further, the number of the second abutting blocks is two, and the second abutting blocks are respectively arranged at two sides of the bottom end of the side wall of the first disc and are symmetrically arranged; the second abutting blocks at each side are in a fan-shaped structure.
Further, the central disc sliding hole is of a waist-shaped hole structure and is arc-shaped; the diameter of the limiting shaft is matched with the inner diameter of the central disc sliding hole, and the limiting shaft is slidably arranged in the central disc sliding hole; the end of the limiting shaft is provided with a shaft end block, the shaft end block and each side of the limiting shaft are fixedly arranged, the diameter of the shaft end block is larger than that of the limiting shaft, and the shaft end block is attached to the outer side wall surface of the central disc.
Further, the cross section of the underframe is of an I-shaped structure, and the thickness of the bottom end of the underframe is larger than the thickness of the center of the underframe; the top ends of two sides of the bottom frame are of an L-shaped structure and are obliquely arranged, the thickness of the top ends of two sides of the bottom frame is larger than the thickness of the center of the bottom frame, and the top frame is adaptive to the width of two side wall surfaces of the top frame.
Further, the diameter and the width of the rotating section are matched with the inner diameter and the depth of the through hole of the underframe; the diameter of the limiting section is matched with the inner diameters of the central disc through hole and the top frame through hole, and the end face of the limiting section extends out of the outer wall surface of the top frame.
Further, each side the center pin draw-in groove is waist type groove structure, the shape of gomphosis spare is waist type block structure, gomphosis spare shape, size with the shape, the size of center pin draw-in groove are suited, the thickness of gomphosis spare is greater than the groove depth of center pin draw-in groove.
Further, the length of the inserting hole extending into the limiting section extending out of the wall surface of the top frame is larger than that of the inserting hole, and the inner diameter of the inserting hole is matched with the outer diameter of the limiting section.
The beneficial effects of the invention are as follows:
the balance frame structure is designed for the opening and closing steel wire ropes between the door machine and the lifting appliance, the balance frame structure realizes the pressure adjustment of the steel wire ropes at two sides of the balance frame through the assembly of a plurality of components including the top frame, the bottom frame and the central disc, the balance frame can adaptively rotate to adjust the stress after the steel wire ropes are stressed unevenly, the opening and closing steel wire ropes are always kept in a stress balanced state, the opening and closing steel wire ropes are kept to be lifted in a stable state, the winding and knotting of the opening and closing steel wire ropes are effectively prevented, the smooth operation of the lifting process is kept, the repeated falling and opening and closing operations are avoided, the production efficiency is improved, and the device is used for enabling the production to have good stability and process efficiency.
The invention is arranged aiming at the structure of the balance frame, the balance frame designs the top frame and the bottom frame into a flexible structure mode of abutting the reset spring, and the stability of the adjusting process when the bottom frame is forced to rotate is ensured; meanwhile, the center plate structure is designed to limit the rotation angle of the underframe, so that the underframe is prevented from being stressed and deflected too much in angle, and the whole device has good structural strength and usability.
Drawings
Fig. 1 is a schematic overall outline of the present invention.
Fig. 2 is a schematic view of the structure of the roof rack of the present invention.
Fig. 3 is a schematic structural view of the chassis of the present invention.
FIG. 4 is a schematic cross-sectional view of the return arm portion of the present invention at the junction of the top frame and the bottom frame.
Fig. 5 is a schematic view of the assembly of the center plate of the present invention.
FIG. 6 is a schematic view of the assembly of the center shaft and end cap of the present invention.
List of reference numerals:
a top frame 1;
the device comprises a top frame through hole 1-1, a top frame limit groove 1-2, a fixed stud 1-3, a top frame assembly hole 1-4, a top frame rotating shaft 1-5, a reset rod 1-6, a reset ring 1-7, a lifting lug 1-8 and a reinforcing sheet 1-9;
a center plate 2;
the first disc 2-1, the second disc 2-2, the central disc through hole 2-3, the central disc limiting groove 2-4, the central disc assembly hole 2-5, the central disc sliding hole 2-6, the first abutting block 2-7 and the second abutting block 2-8;
a chassis 3;
the device comprises a chassis through hole 3-1, a limiting shaft 3-2, a reset sliding cavity 3-3, a reset sliding chute 3-4, a reset spring 3-5 and a shaft end block 3-6;
a hanging ring 4;
a central shaft 5;
the rotating section 5-1, the limiting section 5-2 and the central shaft clamping groove 5-3;
a fitting member 6;
an end cap 7;
the sleeve cap 7-1, the flange 7-2, the sleeve hole 7-3 and the sleeve groove 7-4;
a first bolt 8;
a second bolt 9.
Detailed Description
In order to make the technical scheme of the invention clearer and more definite, the invention is further described below with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent substitution and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixing means and fixing structure in this embodiment are known to those skilled in the art such as gluing, welding, screw connection, bolt-nut connection, riveting, etc.
As can be seen by referring to the accompanying drawings, the special opening and closing rope balancing device for the operation of the log grab bucket of the portal crane comprises a top frame 1, a center plate 2, a bottom frame 3, a lifting ring 4, a center shaft 5, a jogging piece 6, an end cover 7, a first bolt 8 and a second bolt 9;
the centers of two side wall surfaces of the top frame 1 are in a through hole shape to form a top frame through hole 1-1, and two sides of the top frame through hole 1-1 on each side are in a notch shape to form a top frame limiting groove 1-2; the outer side wall surface of each side of the top frame through hole 1-1 is provided with a fixed stud 1-3, and the fixed studs 1-3 are welded and vertically fixed with the wall surface of the top frame 1; the top end of the side wall surface of the top frame 1 is provided with a top frame assembly hole 1-4; the two sides of the top surface of the top frame 1 are provided with top frame rotating shafts 1-5, and the top frame rotating shafts 1-5 and the top frame 1 are rotatably arranged; the middle end side wall of the top frame rotating shaft 1-5 is provided with a reset rod 1-6, the reset rod 1-6 is vertically fixed with the top frame rotating shaft 1-5, the side wall surface of the reset rod 1-6 circumferentially takes a convex structure to form a reset ring 1-7, and the reset ring 1-7 is fixedly arranged with the reset rod 1-6; lifting lugs 1-8 are arranged on the top surfaces of two ends of the top frame 1, and the lifting lugs 1-8 are vertically fixed with the top frame 1;
the center plate 2 is arranged at the center of the top side of the top frame 1, the center plate 2 comprises a first disc 2-1 and a second disc 2-2, the centers of the first disc 2-1 and the second disc 2-2 are all in a through hole shape to form a center plate through hole 2-3, two sides of the center plate through hole 2-3 at each side are in a notch shape to form a center plate limiting groove 2-4, center plate assembly holes 2-5 are circumferentially arranged on the outer rings of the first disc 2-1 and the second disc 2-2, and center plate sliding holes 2-6 are arranged on the bottom sides of the first disc 2-1 and the second disc 2-2; a first abutting block 2-7 is arranged on one side wall surface of the first disc 2-1, the first abutting block 2-7 is fixedly arranged with the first disc 2-1, a second abutting block 2-8 is also arranged on one side wall surface of the first disc 2-1, the second abutting block 2-8 is fixedly arranged with the first disc 2-1, and the central disc assembly hole 2-5 penetrates through the first abutting block 2-7 and the second abutting block 2-8 respectively; the first disc 2-1 and the second disc 2-2 are oppositely arranged, the first abutting block 2-7 and the second abutting block 2-8 are abutted against the side wall surface of the second disc 2-2, the first bolt 8 penetrates through center disc assembly holes 2-5 on two sides of the first disc 2-1 and the second disc 2-2 to realize the assembly and fixation of the center disc 2, and the second bolt 9 penetrates through the top frame assembly holes 1-4 and the top side center disc assembly holes 2-5 to realize the assembly of the center disc 2 and the top frame 1;
the bottom frame 3 is arranged at the center of the center plate 2, the middle end of the bottom frame 3 is embedded between the first disc 2-1 and the second disc 2-2, the bottom end of the bottom frame 3 extends out of the bottom end of the center plate 2, and the top ends of the top frames 1 extend out of the top ends of two sides of the center plate 2; the center of the underframe 3 is in a through hole shape, so as to form an underframe through hole 3-1; limiting shafts 3-2 are arranged on two wall surfaces of the bottom end of the underframe 3, each side of the limiting shafts 3-2 is vertically fixed with the underframe 3, and the limiting shafts 3-2 extend into the central disc sliding holes 2-6; the two ends of the bottom frame 3 are of hollow structures to form a reset sliding cavity 3-3, the two ends of the reset sliding cavity 3-3 are of hollow structures to form a reset sliding groove 3-4, the top frame rotating shaft 1-5 penetrates through the reset sliding groove 3-4, the reset rod 1-6 stretches into the reset sliding cavity 3-3, and the reset ring 1-7 and the reset sliding cavity 3-3 are slidably arranged; a reset spring 3-5 is arranged in the reset sliding cavity 3-3, one end of the reset spring 3-5 is propped against the end face of the reset sliding cavity 3-3, and the other end of the reset spring 3-5 is propped against the end face of the reset ring 1-7; the hanging rings 4 are arranged at two ends of the bottom side of the underframe 3;
the central shaft 5 comprises a rotating section 5-1 and a limiting section 5-2, the limiting section 5-2 is arranged on the end faces of the two ends of the rotating section 5-1, and the two limiting sections 5-2 and the rotating section 5-1 are arranged coaxially and are of an integrated structure; the two side walls of each rotating section 5-1 are in a groove-shaped structure to form a central shaft clamping groove 5-3; the central shaft clamping grooves 5-3 of the rotating sections 5-1 at each end are oppositely arranged; the jogging piece 6 can be inserted into the central shaft clamping groove 5-3 for fixation; the central shaft 5 is arranged at the bottom end of the bottom frame 3, the rotating section 5-1 is embedded into the bottom frame through hole 3-1, the limiting sections 5-2 at two ends sequentially penetrate through the central disc through hole 2-3 and the top frame through hole 1-1 respectively, the embedded piece 6 is embedded into the central disc limiting groove 2-4 and the top frame limiting groove 1-2 respectively, the bottom frame 3 and the central shaft 5 are rotatably arranged, and the central disc 2 and the top frame 1 are in limiting fixation with the central shaft 5;
the end covers 7 are arranged on the outer wall surfaces of the two sides of the top frame 1, the end covers 7 comprise sleeve caps 7-1 and flanges 7-2, and the flanges 7-2 are arranged on the outer wall surface of one end of the sleeve cap 7-1 and fixedly arranged with the sleeve caps 7-1; the center of the sleeve cap is in a groove shape to form a sleeve hole 7-3, the sleeve hole is communicated with the flange 7-2, two side walls of the sleeve hole 7-3 are in a groove shape to form a sleeve groove 7-4, the flange 7-2 is respectively attached to two side walls of the top frame 1, the limiting section 5-2 stretches into the sleeve hole 7-3, the embedded piece 6 is respectively embedded into the sleeve groove 7-4, the fixing stud 1-3 penetrates through the flange 7-2 and is matched with a nut to fix the end cover 7 with the top frame 1, and the end cover 7 is limited by the central shaft 5.
Further, the cross section of the top frame 1 is in an inverted U-shaped structure, the bottom edges of the two sides of the top frame 1 are in a convex structure and are in an arc shape, and the top frame through holes 1-1 are arranged in the arc center of the top frame 1 at each side; the two ends of the top surface of the top frame 1 are in a convex shape, and the top frame rotating shafts 1-5 are arranged at the convex positions of the two ends of the top frame 1.
Further, the inner top surface of the top frame 1 is provided with reinforcing sheets 1-9, the reinforcing sheets 1-9 are arranged in a transverse array, and a plurality of reinforcing sheets 1-9 are supported on the inner side wall of the top frame 1 and welded and fixed with the inner wall surface of the top frame 1.
Further, the first abutting block 2-7 is disposed at the top end of the side wall of the first disc 2-1, the first abutting block 2-7 is in an arc structure, and the shape of the first abutting block 2-7 is adapted to the shape of the first disc 2-1.
Further, the number of the second abutting blocks 2-8 is two, and the second abutting blocks are respectively arranged at two sides of the bottom end of the side wall of the first disc 2-1 and are symmetrically arranged; the second abutting blocks 2-8 on each side are in a fan-shaped structure.
Further, the central disc slide holes 2-6 are of a waist-shaped hole structure and are arc-shaped; the diameter of the limiting shaft 3-2 is matched with the inner diameter of the central disc slide hole 2-6, and the limiting shaft 3-2 is slidably arranged in the central disc slide hole 2-6; the end of the limiting shaft 3-2 is provided with a shaft end block 3-6, the shaft end block 3-6 is fixedly arranged on each side of the limiting shaft 3-2, the diameter of the shaft end block 3-6 is larger than that of the limiting shaft 3-2, and the shaft end block 3-6 is attached to the outer side wall surface of the central disc 2.
Further, the cross section of the underframe 3 is in an I-shaped structure, and the thickness of the bottom end of the underframe 3 is larger than the thickness of the center of the underframe 3; the top ends of two sides of the bottom frame 3 are of an L-shaped structure and are obliquely arranged, the thickness of the top ends of two sides of the bottom frame 3 is larger than that of the center of the bottom frame 3, and the top ends of the bottom frame are adaptive to the width of two side wall surfaces of the top frame 1.
Further, the diameter and the width of the rotating section 5-1 are matched with the inner diameter and the depth of the through hole 3-1 of the underframe; the diameter of the limiting section 5-2 is matched with the inner diameters of the central disc through hole 2-3 and the top frame through hole 1-1, and the end face of the limiting section 5-2 extends out of the outer wall surface of the top frame 1.
Further, each side of the central shaft clamping groove 5-3 is in a waist-shaped groove structure, the shape of the embedded piece 6 is in a waist-shaped block structure, the shape and the size of the embedded piece 6 are matched with those of the central shaft clamping groove 5-3, and the thickness of the embedded piece 6 is larger than the groove depth of the central shaft clamping groove 5-3.
Further, the length of the inserting hole 7-3 extending into the top frame is larger than the length of the limiting section 5-2 extending out of the top frame 1, and the inner diameter of the inserting hole 7-3 is matched with the outer diameter of the limiting section 5-2.
The assembly principle of the invention is as follows:
1) The central disc, the central shaft and the underframe are assembled; the chassis is embedded on one side wall surface of the first disc, embedded pieces are embedded at two ends of the central shaft, the central shaft penetrates through the central disc through hole and the chassis through hole, the rotating section is embedded in the chassis through hole, the limiting section is embedded in the central disc through hole for limiting, and the limiting shaft extends into the central disc sliding hole; then welding and fixing the shaft end block and the limiting shaft; penetrating the first bolts through the center plate assembly holes on the two sides, and clamping and limiting the center plate to the underframe by matching nuts;
2) The bottom frame is assembled with the top frame rotating shaft; embedding a reset spring into the reset sliding cavity, and embedding a reset rod and a reset ring into the reset sliding cavity when the rotating shaft of the top frame penetrates through the reset sliding groove, wherein the reset ring abuts against the reset spring;
3) The underframe, the center plate and the top frame are assembled; attaching the top frames to two side wall surfaces of the central disc, enabling two side limiting sections of the central shaft to penetrate through top frame through holes respectively, enabling the embedded parts to be embedded into limiting grooves of the top frames to be fixed, enabling limiting shafts to extend into two side top ends of the top frames on the two sides, enabling the top frames on the two sides to be welded and fixed to form an integral form, enabling reinforcing sheets to be welded on the side wall surfaces of the top frames at the same time, and enabling the top frames, the central disc and the bottom frame to be arranged in a limiting mode; penetrating second bolts through the top frame assembly holes on two sides and the top center plate assembly holes, and matching nuts to realize further positioning and fixing of the top frame and the center plate;
4) The top frame is fixed with the center in a limiting way; the two end covers are respectively attached to two side wall surfaces of the top frame, the fixing studs penetrate through the flange, the flange is attached to the wall surface of the top frame, the limiting section and the embedded piece extend into the embedded hole and the embedded groove respectively, the end covers are fixed with the top frame through nuts, and end fixing of the end covers to the central shaft is achieved.
The application principle of the invention is as follows:
when the device is not loaded, the underframe rotates with the outer side of the central shaft, and the underframe is in a horizontal state under the gravity action of the underframe;
when the device is loaded, the two ends of the top frame are connected with the steel wire rope through lifting lugs, the bottom end of the bottom frame is connected with the steel wire rope through lifting rings, after one end of the bottom frame is stressed unevenly, one end of the bottom frame descends, the bottom frame rotates outside the central shaft to automatically adjust the position of the steel wire rope, the limiting shaft slides in the sliding hole of the central disc, the top frame rotating shaft on one side of the top frame rotates, the reset ring abuts against the reset spring to compress, and one end of the bottom frame tilted is in a damping state; when the rotation angle of the underframe is overlarge, the two sides of the underframe are limited by the first abutting block and the second abutting block, so that the underframe is prevented from being stressed and deflected too much; after the stress is balanced, the underframe is quickly adjusted to be in a horizontal state under the action of self gravity and the elastic action of a return spring.
The beneficial effects of the invention are as follows:
the balance frame structure is designed for the opening and closing steel wire ropes between the door machine and the lifting appliance, the balance frame structure realizes the pressure adjustment of the steel wire ropes at two sides of the balance frame through the assembly of a plurality of components including the top frame, the bottom frame and the central disc, the balance frame can adaptively rotate to adjust the stress after the steel wire ropes are stressed unevenly, the opening and closing steel wire ropes are always kept in a stress balanced state, the opening and closing steel wire ropes are kept to be lifted in a stable state, the winding and knotting of the opening and closing steel wire ropes are effectively prevented, the smooth operation of the lifting process is kept, the repeated falling and opening and closing operations are avoided, the production efficiency is improved, and the device is used for enabling the production to have good stability and process efficiency.
The invention is arranged aiming at the structure of the balance frame, the balance frame designs the top frame and the bottom frame into a flexible structure mode of abutting the reset spring, and the stability of the adjusting process when the bottom frame is forced to rotate is ensured; meanwhile, the center plate structure is designed to limit the rotation angle of the underframe, so that the underframe is prevented from being stressed and deflected too much in angle, and the whole device has good structural strength and usability.
Claims (10)
1. The special opening and closing rope balancing device for the operation of the log grab bucket of the portal crane is characterized by comprising a top frame (1), a center disc (2), a bottom frame (3), a lifting ring (4), a center shaft (5), a jogged piece (6), an end cover (7), a first bolt (8) and a second bolt (9);
the centers of two side wall surfaces of the top frame (1) are in a through hole shape to form a top frame through hole (1-1), and two sides of the top frame through hole (1-1) at each side are in a notch shape to form a top frame limiting groove (1-2); the outer side wall surface of each side of the top frame through hole (1-1) is provided with a fixed stud (1-3), and the fixed studs (1-3) are welded and vertically fixed with the wall surface of the top frame (1); the top end of the side wall surface of the top frame (1) is provided with a top frame assembly hole (1-4); the two sides of the top surface of the top frame (1) are provided with top frame rotating shafts (1-5), and the top frame rotating shafts (1-5) and the top frame (1) are rotatably arranged; the middle end side wall of the top frame rotating shaft (1-5) is provided with a reset rod (1-6), the reset rod (1-6) is vertically fixed with the top frame rotating shaft (1-5), the side wall surface of the reset rod (1-6) is in a convex structure in the circumferential direction to form a reset ring (1-7), and the reset ring (1-7) and the reset rod (1-6) are fixedly arranged; lifting lugs (1-8) are arranged on the top surfaces of two ends of the top frame (1), and the lifting lugs (1-8) are vertically fixed with the top frame (1);
the center plate (2) is arranged at the center of the top side of the top frame (1), the center plate (2) comprises a first disc (2-1) and a second disc (2-2), the centers of the first disc (2-1) and the second disc (2-2) are all in a through hole shape to form a center plate through hole (2-3), two sides of the center plate through hole (2-3) at each side are in a gap shape to form a center plate limiting groove (2-4), center plate assembly holes (2-5) are circumferentially arranged on the outer rings of the first disc (2-1) and the second disc (2-2), and center plate sliding holes (2-6) are formed in the bottom sides of the first disc (2-1) and the second disc (2-2); a first abutting block (2-7) is arranged on one side wall surface of the first disc (2-1), the first abutting block (2-7) is fixedly arranged with the first disc (2-1), a second abutting block (2-8) is also arranged on one side wall surface of the first disc (2-1), the second abutting block (2-8) is fixedly arranged with the first disc (2-1), and the central disc assembly hole (2-5) respectively penetrates through the first abutting block (2-7) and the second abutting block (2-8); the first disc (2-1) and the second disc (2-2) are oppositely arranged, the first abutting block (2-7) and the second abutting block (2-8) are abutted against the side wall surface of the second disc (2-2), the first disc (2-1) and the two side center disc assembly holes (2-5) of the second disc (2-2) are penetrated through by a first bolt (8), so that the center disc (2) is assembled and fixed, and the center disc (2) and the top frame (1) are assembled through a second bolt (9) and the top frame assembly holes (1-4) and the top side center disc assembly holes (2-5);
the bottom frame (3) is arranged at the center of the center plate (2), the middle end of the bottom frame (3) is embedded between the first disc (2-1) and the second disc (2-2), the bottom end of the bottom frame (3) extends out of the bottom end of the center plate (2), and the top end of the top frame (1) extends out of the top ends of two sides of the center plate (2); the center of the underframe (3) is in a through hole shape, so that an underframe through hole (3-1) is formed; limiting shafts (3-2) are arranged on two wall surfaces of the bottom end of the underframe (3), each side of the limiting shafts (3-2) is vertically fixed with the underframe (3), and the limiting shafts (3-2) extend into the central disc sliding holes (2-6); the top ends of two sides of the bottom frame (3) are of hollow structures to form a reset sliding cavity (3-3), the tops of two ends of the reset sliding cavity (3-3) are of hollow structures to form a reset sliding groove (3-4), the top frame rotating shaft (1-5) penetrates through the reset sliding groove (3-4), the reset rod (1-6) stretches into the reset sliding cavity (3-3), and the reset ring (1-7) and the reset sliding cavity (3-3) are in slidable arrangement; a reset spring (3-5) is arranged in the reset sliding cavity (3-3), one end of the reset spring (3-5) is propped against the end face of the reset sliding cavity (3-3), and the other end of the reset spring (3-5) is propped against the end face of the reset ring (1-7); the hanging rings (4) are arranged at two ends of the bottom side of the underframe (3);
the central shaft (5) comprises a rotating section (5-1) and a limiting section (5-2), the limiting section (5-2) is arranged on the end faces of the two ends of the rotating section (5-1), and the two limiting sections (5-2) and the rotating section (5-1) are arranged coaxially and are of an integrated structure; the two side walls of each rotating section (5-1) are in a groove-shaped structure to form a central shaft clamping groove (5-3); the central shaft clamping grooves (5-3) of the rotating sections (5-1) at each end are oppositely arranged; the jogging piece (6) can be inserted into the central shaft clamping groove (5-3) for fixation; the central shaft (5) is arranged at the bottom end of the underframe (3), the rotating section (5-1) is embedded into the underframe through hole (3-1), the limiting sections (5-2) at two ends sequentially penetrate through the central disc through hole (2-3) and the top frame through hole (1-1) respectively, the embedded piece (6) is embedded into the central disc limiting groove (2-4) and the top frame limiting groove (1-2) respectively, the underframe (3) and the central shaft (5) are rotatably arranged, and the central disc (2), the top frame (1) and the central shaft (5) are in limiting fixation;
the end covers (7) are arranged on the outer wall surfaces of the two sides of the top frame (1), the end covers (7) comprise sleeve caps (7-1) and flanges (7-2), and the flanges (7-2) are arranged on the outer wall surface of one end of each sleeve cap (7-1) and are fixedly arranged with the sleeve caps (7-1); the center of the jacking cap is in a groove shape to form a jacking hole (7-3), the jacking hole and the flange (7-2) are communicated, two side walls of the jacking hole (7-3) are in a groove shape to form a jacking groove (7-4), the flange (7-2) is respectively attached to two side walls of the top frame (1), the limiting section (5-2) stretches into the jacking hole (7-3), the embedded piece (6) is respectively embedded into the jacking groove (7-4), the fixing stud (1-3) penetrates through the flange (7-2) and is matched with a nut to fix the end cover (7) with the top frame (1), and the end cover (7) is limited to the central shaft (5).
2. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1 is characterized in that the cross section of the top frame (1) is of an inverted U-shaped structure, the bottom edges of two sides of the top frame (1) are of convex structures and are of arc shapes, and the top frame through hole (1-1) is arranged in the arc center of each side of the top frame (1); the two ends of the top surface of the top frame (1) are in a convex shape, and the top frame rotating shafts (1-5) are arranged at the convex positions at the two ends of the top frame (1).
3. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1 is characterized in that reinforcing sheets (1-9) are arranged on the inner top surface of the top frame (1), the reinforcing sheets (1-9) are arranged in a transverse array mode, and a plurality of reinforcing sheets (1-9) are supported on the inner side wall of the top frame (1) and welded and fixed with the inner wall surface of the top frame (1).
4. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the first abutting block (2-7) is arranged at the top end of the side wall of the first disc (2-1), the first abutting block (2-7) is in an arc-shaped structure, and the shape of the first abutting block (2-7) is matched with the shape of the first disc (2-1).
5. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the number of the second abutting blocks (2-8) is two, and the second abutting blocks are respectively arranged at two sides of the bottom end of the side wall of the first disc (2-1) and are symmetrically arranged; the second abutting blocks (2-8) on each side are in a fan-shaped structure.
6. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the central disc sliding holes (2-6) are of waist-shaped hole structures and arc-shaped; the diameter of the limiting shaft (3-2) is matched with the inner diameter of the central disc sliding hole (2-6), and the limiting shaft (3-2) is slidably arranged in the central disc sliding hole (2-6); the end part of the limiting shaft (3-2) is provided with a shaft end block (3-6), the shaft end block (3-6) and each side of the limiting shaft (3-2) are fixedly arranged, the diameter of the shaft end block (3-6) is larger than that of the limiting shaft (3-2), and the shaft end block (3-6) is attached to the outer side wall surface of the central disc (2).
7. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the cross section of the underframe (3) is of an I-shaped structure, and the bottom end thickness of the underframe (3) is larger than the center thickness of the underframe (3); the top ends of two sides of the bottom frame (3) are of an L-shaped structure and are obliquely arranged, the top end thickness of two sides of the bottom frame (3) is larger than the center thickness of the bottom frame (3), and the top frame is adaptive to the width of two side wall surfaces of the top frame (1).
8. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the diameter and the width of the rotating section (5-1) are matched with the inner diameter and the depth of the underframe through hole (3-1); the diameter of the limiting section (5-2) is matched with the inner diameters of the central disc through hole (2-3) and the top frame through hole (1-1), and the end face of the limiting section (5-2) extends out of the outer wall surface of the top frame (1).
9. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein each side of the central shaft clamping groove (5-3) is of a waist-shaped groove structure, the shape of the embedded piece (6) is of a waist-shaped block structure, the shape and the size of the embedded piece (6) are matched with those of the central shaft clamping groove (5-3), and the thickness of the embedded piece (6) is larger than the groove depth of the central shaft clamping groove (5-3).
10. The special opening and closing rope balancing device for door machine log grab bucket operation according to claim 1, wherein the extension of the sleeve hole (7-3) is larger than the length of the wall surface of the limit section (5-2) extending out of the top frame (1), and the inner diameter of the sleeve hole (7-3) is matched with the outer diameter of the limit section (5-2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011408829.7A CN112645212B (en) | 2020-12-04 | 2020-12-04 | Special opening and closing rope balancing device for door machine log grab bucket operation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011408829.7A CN112645212B (en) | 2020-12-04 | 2020-12-04 | Special opening and closing rope balancing device for door machine log grab bucket operation |
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| CN112645212A CN112645212A (en) | 2021-04-13 |
| CN112645212B true CN112645212B (en) | 2023-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011408829.7A Active CN112645212B (en) | 2020-12-04 | 2020-12-04 | Special opening and closing rope balancing device for door machine log grab bucket operation |
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