阅读说明：本技术 一种受力自动摘钩装置 (Automatic unhooking device under stress ) 是由 许保亮 于 2019-11-23 设计创作，主要内容包括：本发明涉及一种受力自动摘钩装置,包括销轴、中部筒套和端部筒套,所述销轴的一端设有与销轴同轴的凸台,销轴的另一端与凸台的弧面上均对称设有卡槽,销轴上套设有中部筒套和端部筒套,中部筒套位于凸台和端部筒套之间,且中部筒套能绕销轴转动,凸台的外径与端部筒套的外径相同,销轴另一端的卡槽位于端部筒套的外侧。销轴上套设能绕销轴转动的中部筒套,挂钩挂于中部筒套上,摘钩时挂钩带动中部筒套同步绕销轴旋转,变挂钩与销轴之间的滑动方式为挂钩与销轴之间转动方式,大大减小摩擦力,当旋转至一定角度时挂钩脱离,实现自动摘钩,摘钩无卡阻,安全性高,方便快捷,节省时间。(The invention relates to a stressed automatic unhooking device which comprises a pin shaft, a middle cylinder sleeve and an end cylinder sleeve, wherein one end of the pin shaft is provided with a boss coaxial with the pin shaft, the other end of the pin shaft and the cambered surface of the boss are symmetrically provided with clamping grooves, the pin shaft is sleeved with the middle cylinder sleeve and the end cylinder sleeve, the middle cylinder sleeve is positioned between the boss and the end cylinder sleeve, the middle cylinder sleeve can rotate around the pin shaft, the outer diameter of the boss is the same as that of the end cylinder sleeve, and the clamping groove at the other end of the pin shaft is positioned on the outer side of the end cylinder sleeve. The middle barrel sleeve capable of rotating around the pin shaft is sleeved on the pin shaft, the hook is hung on the middle barrel sleeve, the hook drives the middle barrel sleeve to rotate around the pin shaft synchronously during hook picking, the sliding mode between the hook and the pin shaft is changed into the rotating mode between the hook and the pin shaft, friction force is greatly reduced, the hook is separated when rotating to a certain angle, automatic hook picking is realized, no blocking exists during hook picking, safety is high, convenience and rapidness are achieved, and time is saved.)

1. The utility model provides an automatic unhooking device of atress, its characterized in that, includes round pin axle, middle part barrel casing and tip barrel casing, the one end of round pin axle is equipped with the boss coaxial with the round pin axle, and the equal symmetry is equipped with the draw-in groove on the other end of round pin axle and the cambered surface of boss, and the epaxial cover of round pin is equipped with middle part barrel casing and tip barrel casing, and the middle part barrel casing is located between boss and the tip barrel casing, and the middle part barrel casing can rotate around the round pin axle, and the external diameter of boss is the same with the external diameter of tip barrel casing, and the draw-.

2. The forced automatic unhooking device according to claim 1, wherein the cylinder wall of the middle cylinder sleeve is provided with a groove, and the end part of the cylinder wall of the middle cylinder sleeve is provided with an oil filling hole which is communicated with the groove.

3. The forced automatic unhooking device according to claim 1, wherein the edge of the locking groove at the other end of the pin shaft is flush with the end face of the end sleeve.

4. The forced automatic unhooking device of claim 1, wherein a gap is provided between the middle sleeve and the pin.

5. The forced automatic unhooking device according to claim 4, wherein the gap between the middle sleeve and the pin is 2 mm.

6. The forced automatic unhooking device according to claim 1, wherein the unhooking device is fixed between two lugs at the end part of the base, pin shaft holes are oppositely formed in the two lugs, a pin shaft sleeved with the middle sleeve and the end sleeve penetrates through the pin shaft holes, a boss at one end of the pin shaft is located in the pin shaft hole of one lug, the other end of the pin shaft is located in the pin shaft hole of the other lug after being sleeved with the end sleeve, clamping grooves are located on the outer sides of the two lugs, the edges of the clamping grooves are flush with the outer surfaces of the lugs, clamping plates are clamped in the clamping grooves and fixed on the outer surfaces of the lugs through bolts respectively, and a hook is hung on the middle sleeve between the two lugs.

7. The forced automatic unhooking device according to any one of claims 1 to 6, wherein the boss is integrally formed with the pin.

Technical Field

The invention relates to an automatic forced unhooking device, and belongs to the technical field of steel transportation equipment.

Background

The DQLK2500.9000 stacker-reclaimer is the main equipment for transporting bulk raw materials of iron and steel enterprises, and undertakes the stacking and reclaiming of the raw materials, the stacking capacity of the existing DQLK2500.9000 stacker-reclaimer reaches 9000t/h, the reclaiming capacity reaches 2500t/h, when the stacker-reclaimer is in a stacking mode, a second tail car of the stacker-reclaimer pushes a hydraulic cylinder to lift the second tail car to the top through a hydraulic system to reach a preset position, and then a hook is realized through an electric push rod by the hook, so that the safety protection effect is achieved.

However, the stacker-reclaimer two-tail car can not be unhooked frequently, and the hook can not be unhooked due to the fact that the hook is contacted with the pin shaft to damage the card and the friction force is too large. When stacker-reclaimer windrow, owing to the dead weight flagging of powdered ore and two trailers, in addition hydraulic system oil pipe's inflation leads to whole two trailers can descend about 20mm (the gap between couple and the axle is about 20mm), leads to couple and round pin axle to contact, and when the long-time atress of contact surface, frictional force increase, and external factors such as weather rainwater lead to the contact surface corrosion, and frictional force is bigger, and then leads to unhooking the difficulty.

Because the current operating place of the stacker-reclaimer belongs to outdoor operation, the rustiness between the hook and the pin shaft is easily caused by humid environment, rainy weather, and the like. The continuous operation of the stacker-reclaimer is generally over 24 hours, the stacker-reclaimer causes the descending of the safety hook due to the self weight of the two-trailer and the stress expansion of the hydraulic oil pipe, the two-trailer hook of the stacker-reclaimer is tightly combined with the pin shaft under stress, and the friction force is very large, which is an unavoidable condition at present. And the unhooking action is actually circular motion along the tangential direction of the outer diameter of the pin shaft, and the current specific operation steps are divided into two steps: 1. the hydraulic cylinder is pushed by manually starting a hydraulic system of the two-tail vehicle, so that the hook and the pin shaft are separated and are not in contact; 2. and then the electric push rod of the hook is automatically operated to realize the action of unhooking, so that the operation is complex and the time is wasted.

Due to the difficulty in unhooking, part of stacker-reclaimers remove the hooks, unhooking faults are removed, however, the two-tail vehicle loses safety protection, and if the hydraulic system has the problems of instantaneous pressure relief, hydraulic pipe explosion and the like, the two-tail vehicle can quickly descend to cause serious damage to equipment.

Disclosure of Invention

The invention aims to provide an automatic hook picking device under stress, which changes the sliding connection between a hook and a pin shaft into rotating connection, greatly reduces friction force and is convenient for automatic hook picking.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an automatic unhooking device of atress, includes round pin axle, middle part barrel casing and tip barrel casing, the one end of round pin axle is equipped with the boss coaxial with the round pin axle, and the equal symmetry is equipped with the draw-in groove on the other end of round pin axle and the cambered surface of boss, and the epaxial cover of round pin is equipped with middle part barrel casing and tip barrel casing, and the middle part barrel casing is located between boss and the tip barrel casing, and the middle part barrel casing can rotate around the round pin axle, and the external diameter of boss is the same with the external diameter of tip barrel casing, and the draw-in.

Specifically, the cylinder wall of the middle cylinder sleeve is provided with a groove, the end part of the cylinder wall of the middle cylinder sleeve is provided with an oil injection hole, and the oil injection hole is communicated with the groove. Lubricating grease is injected from the oil injection hole, so that the lubricating grease is fully distributed between the middle cylinder sleeve and the pin shaft, the friction force is reduced, and the free rotation is facilitated.

Specifically, the edge of the clamping groove at the other end of the pin shaft is flush with the end face of the end barrel sleeve.

Specifically, a gap is formed between the middle barrel sleeve and the pin shaft, so that the middle barrel sleeve can freely rotate around the pin shaft, and the gap is usually 2 mm.

The unhooking device comprises a base, a clamping groove, a base, a clamping plate and a hook, wherein the unhooking device is fixed between two lugs at the end part of the base, pin shaft holes are oppositely formed in the two lugs, a pin shaft for sleeving a middle barrel sleeve and a tip barrel sleeve penetrates through the pin shaft holes, a boss at one end of the pin shaft is located in the pin shaft hole of one lug, the other end of the pin shaft is sleeved in the pin shaft hole of the other lug after the tip barrel sleeve is sleeved, the clamping groove is located in the outer side of the two lugs, the edge of the clamping groove is flush with the outer surface of the lug, the clamping plate is clamped in the.

Specifically, the boss and the pin shaft are integrally formed.

The invention has the following beneficial effects: the stressed automatic unhooking device is provided with the middle barrel sleeve which can rotate around the pin shaft in a sleeved mode on the pin shaft, the hook is hung on the middle barrel sleeve, the middle barrel sleeve is driven to rotate around the pin shaft synchronously by the hook during unhooking, the sliding mode between the hook and the pin shaft is changed into the rotating mode between the hook and the pin shaft, friction is greatly reduced, the hook is separated when rotating to a certain angle, automatic unhooking is achieved, the unhooking is free of blocking, the safety is high, convenience and rapidness are achieved, and the time is saved.

Drawings

Fig. 1 is a schematic view of the overall structure of the automatic unhooking device of the present invention.

Fig. 2 is a schematic diagram of the pin structure of the present invention.

Fig. 3 is a schematic view of the structure of the inner sleeve of the present invention.

Fig. 4 is a sectional view of the structure of the inner sleeve of the present invention.

Fig. 5 is a schematic view of the end sleeve construction of the present invention.

Fig. 6 is a diagram of the effect of the automatic unhooking device of the invention.

Fig. 7 is a partially enlarged view of a portion a in fig. 6.

1. The hinge pin comprises a hinge pin body, a middle barrel sleeve, a boss, an end barrel sleeve, a clamping groove, a clamping hook, a clamping plate, a clamping block and a bolt, wherein the hinge pin body comprises a hinge pin 2, a middle barrel sleeve, a boss 3, a boss 4, an end barrel sleeve 5, a clamping groove 6.

Detailed Description

The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the scope of the present invention is not limited to these examples. All changes, modifications and equivalents that do not depart from the spirit of the invention are intended to be included within the scope thereof.

As shown in fig. 1, 2 and 5, the automatic forced unhooking device comprises a pin shaft 1, a middle cylinder sleeve 2 and an end cylinder sleeve 4, wherein one end of the pin shaft 1 is provided with a boss 3 coaxial with the pin shaft 1, and the boss 3 and the pin shaft 1 are integrally formed. The other end of round pin axle 1 and the cambered surface of boss 3 all the symmetry be equipped with draw-in groove 5, and the cover is equipped with middle part barrel casing 2 and tip barrel casing 4 on round pin axle 1, and middle part barrel casing 2 is located between boss 3 and the tip barrel casing 4, and middle part barrel casing 2 can rotate around round pin axle 1, is equipped with the clearance between middle part barrel casing 2 and the round pin axle 1, and the clearance is 2mm usually. The outer diameter of the boss 3 is the same as that of the end part cylinder sleeve 4, the clamping groove 5 at the other end of the pin shaft 1 is positioned on the outer side of the end part cylinder sleeve 4, and the edge of the clamping groove 5 at the other end of the pin shaft 1 is flush with the end face of the end part cylinder sleeve 4.

As shown in fig. 3 and 4, the cylinder wall of the middle cylinder sleeve 2 is provided with a groove 7, the end part of the cylinder wall of the middle cylinder sleeve 2 is provided with an oil filling hole 6, and the oil filling hole 6 is communicated with the groove 7.

A high-strength bearing can be arranged between the pin shaft 1 and the middle cylinder sleeve 2, and end covers are arranged at two ends of the pin shaft, so that the pin shaft can flexibly rotate and can bear high-strength pressure.

As shown in fig. 6 and 7, when in use, the unhooking device is fixed between two lugs 10 at the end part of the base 8, pin shaft holes are oppositely arranged on the two lugs 10, a pin shaft 1 sleeved with the middle cylinder sleeve 2 and the end cylinder sleeve 4 passes through the pin shaft holes, and the inner diameter of the pin shaft holes is adapted to the outer diameters of the boss 3 and the end cylinder sleeve 4. The boss 3 of 1 one end of round pin axle is located the round pin axle hole of a lug 10, and 1 other pot head of round pin axle is located the round pin axle hole of another lug 10 after establishing tip barrel casing 4, and draw-in groove 5 is located the outside of two lugs 10 and the edge flushes with the lug 10 surface, and the cardboard 11 is established to the card in the draw-in groove 5, and on the cardboard 11 was fixed in the surface of lug through bolt 12 respectively, it had couple 9 to be located to hang on the middle part barrel casing 2 between two lugs 10. When unhooking, couple 9 is rotatory, because couple 9 chucking frictional force is big on middle part barrel casing 2, therefore couple 9 drives middle part barrel casing 2 and rotates around round pin axle 1, becomes the slip mode between couple and the round pin axle and be the rotation mode between couple and the round pin axle, reduces frictional force greatly, and couple 9 breaks away from when rotatory to certain angle, realizes automatic unhooking.

The present invention is not limited to the above embodiments, and any structural changes made under the teaching of the present invention shall fall within the scope of the present invention, which is similar or similar to the technical solutions of the present invention.

The techniques, shapes, and configurations not described in detail in the present invention are all known techniques.