CN2621174Y

CN2621174Y - Hook for automatic realing load and resetting

Info

Publication number: CN2621174Y
Application number: CN 03251025
Authority: CN
Inventors: 王伟国
Original assignee: Beijing Aerospace Propulsion Institute
Current assignee: Beijing Aerospace Propulsion Institute
Priority date: 2003-05-07
Filing date: 2003-05-07
Publication date: 2004-06-23
Anticipated expiration: 2013-05-07

Abstract

An automatic disengaging hook can control the automatic disengagement and replacement of heavier object with a smaller force. The automatic disengaging hook comprises the components of a hook, a roll bearing, a fork-shaped piece, an unhooking cylinder, an impact cylinder and an installation board etc. The alternating motion of each cylinder is controlled by a computer program to achieve the purpose of the automatic disengagement of the heavy object and the automatic replacement of the hook. The automatic disengaging hook has a small and skilful structure and low cost, and can effectively avoid the dropping of a heavy object, which is caused by the abrupt gas or electric power breakdown.

Description

Automatically-unhooked

Affiliated technical field

The utility model relates to the less power of a kind of usefulness, reaches to make the self-discharging device of bigger power, especially the hook that can heavier weight be come off automatically with less control effort.

Background technology

In the automation of industry production process, some link need make the weight that has lifted by crane come off automatically, at present, and the normal leverage of hanging weight at an end of the lever of making hook shape, applying balancing force at the other end of lever by cylinder that adopts.The flexible drive lever rotation of cylinder, when the plane at the weight sling point place of hook rotates to when forming certain included angle α with vertical guide, weight both came off from hook.But, this lever uncoupling rigging is when hanging heavier weight, the balancing force of cylinder is bigger, therefore need large diameter cylinder, simultaneously, make hook rotation alpha angle need the stroke of cylinder also bigger, cause that structure is huge, the operational space is narrow and small, cost of manufacture is higher and when air pressure descends suddenly or has a power failure, there is hidden danger in weight meeting tenesmus out of control.

Summary of the invention

Huge in order to overcome existing lever uncoupling rigging structure, cost is higher and have a deficiency of hidden danger, it is a kind of automatically-unhooked that the utility model provides, this is automatically-unhooked can not only reach with less control effort make heavier weight automatically-unhooked, can make the automatic wide-angle rotation of hook with the very little stroke of power element, structure is small and exquisite, with low cost and can effectively prevent the unexpected tenesmus of weight.

The technical scheme that its technical matters that solves the utility model adopts is: the movement parts by power element (can adopt: cylinder, oil cylinder, electromagnet, electrical motor etc.) is threaded with a Y-piece, and this Y-piece is simultaneously hinged with the bearing pin that one group of antifriction-bearing box is housed.Wherein the A point at two antifriction-bearing box maximum radius places contacts with hook resistance arm vertical plane, be used for the torque that balance hook by gravity produces, hook only is subjected to horizontal force and does not have vertical force at the A point, so, Chong weight can not make antifriction-bearing box be subjected to displacement yet again, have only the sense of motion of artificial switching power element could drive the antifriction-bearing box motion, improved safe reliability.In addition two antifriction-bearing boxs contact with adapter plate, are used for balance bearing pin power to be.Power element drives bearing pin by computer program control by Y-piece and antifriction-bearing box moves reciprocatingly, then rolling with the vertical plane of hook resistance arm and the plane contact place of adapter plate upper rail in the outer ring of antifriction-bearing box, when it is rolled into the vertical plane that breaks away from the hook resistance arm, hook dextrorotation under deadweight or gravity W effect goes to balance position, and weight both broke off relations.Each antifriction-bearing box and and its to have between each parts of relative motion be friction of rolling, its suffered friction moment is less, the tractive force of required power element is also very little, and is constant force, is 1/10 of aforementioned leverage tractive force (being the function of position); The radius of the minimum value≤antifriction-bearing box of power element draft travel is 1/12 of an aforementioned leverage, has reached small and exquisite, with low cost, the safe and reliable purpose of structure.

The beneficial effects of the utility model are that with little constant force and the very little bigger power of displacement control, structure is small and exquisite, and is with low cost, safe and reliable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the constructional drawing of automatically-unhooked first embodiment.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the constructional drawing of automatically-unhooked second embodiment.

Fig. 4 is the left view of Fig. 3.

Fig. 5 is the constructional drawing of automatically-unhooked the 3rd embodiment.

Fig. 6 is the left view of Fig. 5.

1. hooks among the figure, 2. an I, 3. spacer, 4. screw, 5. bearing pin, 6. antifriction-bearing box, 7. Y-piece, 8. attaching parts, 9. adapter plate, 10. screw, 11. unhook cylinders, 12. cylinder blocks, 13. II, 14. vertical loading board, 15. bulb nuts, 16. positive stop blocks, 17. pins, 18. nut, 19. screw rod slide blocks, 20. springs, 21. slide rails, 22. plug screw, 23. collision blocks, 24. erecting frames, 25. blow cylinders.

The specific embodiment

Look among the embodiment at Fig. 1, hook (1) is by axle I (2), cylinder block (12) is installed between two adapter plates (9) by axle II (13), unhook cylinder (11) is affixed by screw (10) and cylinder block (12), attaching parts (8) one ends are connected with the cylinder bar of unhook cylinder (11), the other end is connected with Y-piece (7), four (quantity is determined by Mechanics Calculation) antifriction-bearing boxs (6) are installed on the Y-piece (7) by bearing pin (5), wherein in the slideway that two lay respectively at two adapter plates (9), two middle parts (as shown in Figure 2) that are installed on Y-piece (7) in addition, two positive stop blocks (16) are affixed by screw (4) and two adapter plates (9), its effect is the axial wobble of restriction antifriction-bearing box (6), in guaranteeing that antifriction-bearing box (6) is relative with the vertical planar central of slideway center and hook (1) tail end, vertical loading board (14) one ends link to each other with axle II (13), and the other end is installed on frame with this automatically-unhooked suspension.The working process of present embodiment is: the A point at antifriction-bearing box (6) maximum radius place contacted with the vertical plane of hook (1) tail end when the cylinder bar of unhook cylinder (11) stretched out entirely, stop hook (1) under weight W or self gravitation effect, to clockwise rotate unhook, when full reduced time of the cylinder bar of unhook cylinder (11), drive antifriction-bearing box (6) edge corresponding slideway separately scrolls up to the vertical plane that breaks away from hook (1) tail end, hook (1) dextrorotation under weight W or self gravitation effect goes to the balance position that Fig. 5 dotted line is looked, both free falls of weight W.The cylinder bar of unhook cylinder (11) of delaying time after 0.2 second stretches out entirely and resets, and by manually clockwise rotating hook (1) it is contacted with the A point of antifriction-bearing box (6), and can hang weight again this moment, so far, finishes a working cycle.

Look among second embodiment at Fig. 3, hook (1) is by axle I (2), slide rail (21) is installed between two adapter plates (9) by screw, screw rod slide block (19) inserts in the slide rail hole of slide rail (21) round section, the screw rod end of screw rod slide block (19) is threaded with Y-piece (7), four (quantity is determined by Mechanics Calculation) antifriction-bearing boxs (6) are installed on the Y-piece (7) by bearing pin (5), wherein in the slideway that two lay respectively at two adapter plates (9), two middle parts (as shown in Figure 4) that are installed on Y-piece (7) in addition, two positive stop blocks (16) are affixed by screw (4) and two adapter plates (9), its effect is the axial wobble of restriction antifriction-bearing box (6), in guaranteeing that antifriction-bearing box (6) is relative with the vertical planar central of slideway center and hook (1) tail end, spring (20) one ends insert in the counterbore of screw rod slide block (19), the other end inserts in the counterbore of the plug screw (22) that is threaded with slide rail (21), vertical loading board (14) one ends link to each other with axle II (13), and the other end is installed on frame with this automatically-unhooked suspension.Present embodiment is broken off relations by the setting weight value control of weight self need not add unhook power, its working process is: antifriction-bearing box (6) is under the effect of spring force, all the time be in the smallest limit position, the summit B of hook (1) tail end locates to contact with it below the maximum radius A of antifriction-bearing box (6) point, when the upwards component Fy that antifriction-bearing box (6) is ordered at B adds the gravity of each relevant movement parts less than spring force, hook (1) transfixion, when the continuous increase of weight W makes Fy add the gravity of each relevant movement parts greater than spring force, antifriction-bearing box (6) upward movement, hook (1) dextrorotation under weight W or self gravitation effect goes to the balance position that Fig. 5 dotted line is looked, both free falls of weight W, antifriction-bearing box (6) automatically resets under the spring force effect, by manually clockwise rotating hook (1) it is contacted again with the B point of antifriction-bearing box (6), can hang weight this moment again, so far, finish a working cycle.Pre compressed magnitude by plug screw (22) regulating spring (20) and regulate the smallest limit position of antifriction-bearing box (6) by screw rod slide block (19) can obtain the desired Different Weight of weight when automatically-unhooked.

Look among the 3rd embodiment at Fig. 5, hook (1) is by axle I (2), cylinder block (12) is installed between two adapter plates (9) by axle II (13), unhook cylinder (11) is affixed by screw (10) and cylinder block (12), attaching parts (8) one ends are connected with the cylinder bar of unhook cylinder (11), the other end is connected with Y-piece (7), four (quantity is determined by Mechanics Calculation) antifriction-bearing boxs (6) are installed on the Y-piece (7) by bearing pin (5), wherein in the slideway that two lay respectively at two adapter plates (9), two middle parts (as shown in Figure 6) that are installed on Y-piece (7) in addition, two positive stop blocks (16) are affixed by screw (4) and two adapter plates (9), its effect is the axial wobble of restriction antifriction-bearing box (6), in guaranteeing that antifriction-bearing box (6) is relative with the vertical planar central of slideway center and hook (1) tail end, vertical loading board (14) one ends link to each other with axle II (13), and the other end is installed on frame with this automatically-unhooked suspension.Blow cylinder (25) is installed in the hole of the erecting frame (24) that is fixed on two adapter plates (9), and collision block (23) is fixed in the piston rod end of blow cylinder (25).Present embodiment can automatically-unhookedly automatically reset, its working process is: the A point at antifriction-bearing box (6) maximum radius place contacted with the vertical plane of hook (1) tail end when the cylinder bar of unhook cylinder (11) stretched out entirely, stop hook (1) under weight W or self gravitation effect, to clockwise rotate unhook, when full reduced time of the cylinder bar of unhook cylinder (11), drive antifriction-bearing box (6) edge corresponding slideway separately scrolls up to the vertical plane that breaks away from hook (1) tail end, hook (1) dextrorotation under weight W or self gravitation effect goes to the balance position that Fig. 5 dotted line is looked, both free falls of weight W.The cylinder bar of unhook cylinder (11) of delaying time after 0.2 second stretches out entirely and resets, simultaneously, the cylinder bar of blow cylinder (25) stretches out fast, drive the place, C plane that has been in the hook (1) of state of equilibrium after collision block (23) bump breaks off relations, clickwise contacted with the A point of antifriction-bearing box (6) after hook (1) obtained enough moment of momentums, the cylinder bar fast retractile of bump back blow cylinder (25), and can hang weight this moment again, so far, finish a working cycle.

Claims

One kind automatically-unhooked, it is characterized in that: hook (1) is by axle I (2), cylinder block (12) is installed between two adapter plates (9) by axle II (13), unhook cylinder (11) is affixed by screw (10) and cylinder block (12), attaching parts (8) one ends are connected with the cylinder bar of unhook cylinder (11), the other end is connected with Y-piece (7), four antifriction-bearing boxs (6) are installed on the Y-piece (7) by bearing pin (5), wherein in the slideway that two lay respectively at two adapter plates (9), two middle parts that are installed on Y-piece (7) in addition, two positive stop blocks (16) are affixed by screw (4) and two adapter plates (9), its effect is the axial wobble of restriction antifriction-bearing box (6), in guaranteeing that antifriction-bearing box (6) is relative with the vertical planar central of slideway center and hook (1) tail end, vertical loading board (14) one ends link to each other with axle II (13), and the other end is installed on frame with this automatically-unhooked suspension.
2. according to claim 1 automatically-unhooked, it is characterized in that: slide rail (21) is installed between two adapter plates (9) by screw, screw rod slide block (19) inserts in the slide rail hole of slide rail (21) round section, the screw rod end of screw rod slide block (19) is threaded with Y-piece (7), spring (20) one ends insert in the counterbore of screw rod slide block (19), and the other end inserts in the counterbore of the plug screw (22) that is threaded with slide rail (21).
3. according to claim 1 automatically-unhooked, it is characterized in that: blow cylinder (25) is installed in the hole of the erecting frame (24) that is fixed on two adapter plates (9), and collision block (23) is fixed in the piston rod end of blow cylinder (25).