A scrap box for single hook lifting and a lifting and turning method thereof

Abstract

A kind of scrap box for single hook lifting and its lifting and turning method, including box, guide plate, lifting rod and reinforcing plate;When scrap box carries scrap lifting, the upper end of wire rope is connected with single hook, the lower end is tethered with lifting rod, the middle section passes through the inner arc groove of guide plate and closely abuts the inner groove surface in the inner arc groove close to the rear side of box, so that the lifting point is located on the guide plate and coincides with the center of gravity of scrap box in the same plane, so that the hook balances the scrap box and scrap;When scrap box is overturned to dump scrap, the upper end of wire rope is connected with single hook, the middle section is moved from the inner arc groove of guide plate and closely abuts the rear side of box, so that the lifting point is located on the lifting rod and is staggered with the center of gravity of scrap box, the hook is lifted and the wire rope is separated from the rear side of box, so that the scrap box is overturned forward, and the dumping of scrap is realized.The present application has the advantages of simple structure, convenient operation, fast and safe completion of the lifting and turning operation of scrap box, and the effects of improving operation efficiency and ensuring production safety.

Description

TECHNICAL FIELD

[0001] The present application relates to the processing of iron filings in the machining process of large parts, in particular to an iron filings box for single-hook lifting and a lifting and turning method thereof, and belongs to the technical field of machining. BACKGROUND

[0002] A large amount of iron filings will be generated in the process of mechanical cutting, which is generally collected into an iron filings box through a chip removal groove under the machine tool, and then lifted by a crane and poured into a vehicle carrying iron filings.

[0003] The traditional iron filings box is of a box structure, and the iron filings in the box are poured out by turning the box. The turning method of the iron filings box is usually to use a crane to lift and pour, which requires high operating skills, and improper operation can easily cause the hook to be detached, causing damage to the equipment or injury to the personnel. In addition, if the pouring of iron filings is not complete, personnel need to enter the box for cleaning, which is time-consuming and laborious and inconvenient to operate.

[0004] In order to solve these problems, some improved iron filings box structures have appeared on the market, for example, an iron filings box that uses a driving mechanism to turn, which reduces the working intensity of the workers and improves the efficiency of chip transfer. However, this structure is only suitable for light-load small iron filings boxes, but not for heavy-load large iron filings boxes in the machining of large parts. Another improved structure is to add a turning lifting point at the bottom of the iron filings box, and to realize lifting and turning by the coordinated action of double lifting hooks. However, since the crane lifting equipment in the machining workshop of large parts often adopts double trolley equipment, the distance between the main hooks of the two cranes after they are parked together is much larger than the length of the iron filings box, which cannot meet the standard requirement that the angle between the lifting steel wires is between 60-90 degrees. Therefore, the lifting of the iron filings box in the machining workshop of large parts can only be single-hook lifting operation.

[0005] In summary, the existing turning and pouring method of the iron filings box does not adapt to the current situation of machining large parts, and therefore a iron filings box for single-hook lifting and a lifting and turning method thereof are needed to meet the production requirements. SUMMARY

[0006] The technical problem to be solved by the present application is to overcome the shortcomings of the prior art and provide an iron filings box for single-hook lifting and a lifting and turning method thereof, so as to improve the efficiency of turning and pouring of heavy-load large iron filings boxes, ensure the safety of equipment and personnel, and achieve the effects of easy use and safety.

[0007] The technical solutions adopted by the present application to solve the technical problems are as follows:

[0008] An iron filings box for single-hook lifting, comprising a box body, a guide plate, a lifting rod and a reinforcing plate.

[0009] The box is a right cuboid welded by section steel and steel plate, used for containing iron scraps, the upper side is a rectangle, open as the entrance and exit of iron scraps, two guide plates are horizontally welded on the upper edges of the left and right side of the box, and are eccentrically arranged on the center line of the short side of the box and close to the front side of the box, the guide plate is provided with an inner circular arc slot with a notch for passing through the wire rope, two reinforcing plates are welded on the rear lower corners of the left and right side of the box close to the rear side and the bottom plane of the box, and the lifting rod axis is horizontally welded on the reinforcing plate and is perpendicular to the reinforcing plate, used for connecting the wire rope.

[0010] Further, the inner circular arc slot is symmetrically arranged on the center of the guide plate, the diameter of the circular arc of the inner circular arc slot is the same as the diameter of the wire rope.

[0011] Further, the notch of the inner circular arc slot has a width not less than the diameter of the wire rope.

[0012] Further, the distance between the inner groove surface of the inner circular arc slot of the guide plate close to the rear side of the box and the center line of the short side of the box is half of the diameter of the wire rope.

[0013] Further, the reinforcing plate is a rectangle plate, and the plane is close to the left and right side of the box.

[0014] Further, the lifting rod is a stepped cylindrical member with large outer diameter and small inner diameter, and the angle between the line connecting the center of the lifting rod and the point of the projection of the center of gravity of the box on the side of the box and the bottom plane is less than 45°.

[0015] Another technical scheme of the present application is:

[0016] A lifting and turning method of the iron scrap box for single hook lifting, characterized in that: when the iron scrap box is lifted, the upper end of the wire rope is connected with a single hook, the lower end is connected with the lifting rod, and the middle section passes through the inner circular arc slot of the guide plate and is close to the inner groove surface of the inner circular arc slot close to the rear side of the box, so that the lifting point is located on the guide plate and coincides with the center of gravity of the iron scrap box in the same plane, so that the hook balances the iron scrap box and the iron scraps; when the iron scrap box is turned over to dump the iron scraps, the upper end of the wire rope is connected with a single hook, the middle section is moved from the inner circular arc slot of the guide plate and is close to the rear side of the box, so that the lifting point is located on the lifting rod and is staggered with the center of gravity of the iron scrap box, the hook is lifted, and the wire rope is separated from the rear side of the box, so that the iron scrap box is turned over forwardly, and the dumping of the iron scraps is realized.

[0017] Further, the lifting and turning method comprises the following specific steps:

[0018] Step one, tie a steel wire rope on the lifting rod of the scrap iron box, pass the middle section of the steel wire rope through the inner circular arc groove of the guide plate and close to the inner groove surface near the rear side of the box, hang the upper end of the steel wire rope on a single hook, then lift the hook, and then drive the scrap iron box and scrap iron to rise, complete the lifting of the scrap iron box;

[0019] Step two, lift the scrap iron box to the unloading place, lower the hook to make the bottom plane of the scrap iron box fall, then move the middle section of the steel wire rope in the inner circular arc groove of the guide plate to the rear side of the box and close to it, then lift the hook and drive the scrap iron box to overturn, the scrap iron falls out of the open upper side of the scrap iron box, and the task of pouring scrap iron is completed;

[0020] Step three, 1) lift the empty scrap iron box to the site, lower the hook to make the front upper corner of the box fall, and use a wooden block to support the rear upper corner of the box on the upper side of the scrap iron box;

[0021] 2) lower the hook, the scrap iron box automatically overturns backward around the support point of the front upper corner of the box under the action of gravity until the front side of the box contacts the ground;

[0022] 3) continue to lower the hook and loosen the steel wire rope, then pass the middle section of the steel wire rope into the inner circular arc groove of the guide plate and close to the inner groove surface near the rear side of the box;

[0023] 4) start the crane to move the hook horizontally backward and beyond the position of the bottom plane of the box;

[0024] 5) slowly lift the hook and tighten the steel wire rope, make the box overturn backward with the front lower corner as the landing support point until the bottom plane of the box contacts the ground, complete the repositioning of the overturning posture of the scrap iron box;

[0025] Step four, in the manner of step one, lift the empty scrap iron box from the site back to the working position.

[0026] Further, in step three 1), the height of the wooden block is greater than half the height of the box and less than the height of the box.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] 1. The present application can quickly and safely complete the lifting and overturning operation of the scrap iron box, fully meet the needs of production, and improve the operation efficiency and safety in production.

[0029] 2. The scrap iron box has the advantages of simple structure and strong universality. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 is a structural diagram of the scrap box for single-hook hoisting.

[0031] Figure 2 is a left view of Figure 1 .

[0032] Figure 3 is a top view of Figure 1 .

[0033] Figure 4 is an enlarged view of the U part in Figure 3 .

[0034] Figure 5 is a flat-hanging state diagram of the present application.

[0035] Figure 6 is a left view of Figure 5 .

[0036] Figure 7 is a process diagram of the present application for turning over the scrap.

[0037] Figure 8 is a left view of Figure 7 .

[0038] Figure 9 is a process diagram of the present application for correcting the posture of the scrap box after turning over the scrap (rear view).

[0039] In the figure: 1 - scrap box, 11 - guide plate, 12 - box body, 13 - hoisting rod, 14 - reinforcing plate, 2 - steel wire rope, 3 - hook, 4 - skid, A - rear side, B - front side, C - support point, D - landing point, G - center of gravity, C1 - angle between the line connecting the center of the hoisting rod and the point of the center of gravity of the box body projected on the side of the box body and the bottom plane, L3 - distance between the inner groove surface of the inner circular groove of the guide plate close to the rear side of the box body and the center line of the short side of the box body. DETAILED DESCRIPTION

[0040] The present application is used for single-hook hoisting and turning over operation of the scrap box.

[0041] Please refer to Figure 1 , Figure 2 and Figure 3 , the scrap box 1 for single-hook hoisting comprises a box body 12, a guide plate 11, a hoisting rod 13 and a reinforcing plate 14.

[0042] The box body 12 is a right cuboid made of profile steel and steel plate by welding, used for containing scrap, and the upper side thereof is a rectangle, which is open as the inlet and outlet of the scrap; the intersection of the center symmetry faces of the long side, short side and height side of the box body 12 is the center of gravity G of the scrap box 1.

[0043] Two guide plates 11 are respectively horizontally welded on the upper edges of the left and right side faces of the box 12, for passing through the steel wire rope. The guide plate 11 is located at the center line of the short side of the box 12 and is eccentrically close to the front side face B of the box 12. Please refer to Figure 4 The guide plate 11 is a rectangular small plate member, which is provided with an inner circular arc groove with a notch, for passing through the steel wire rope during hoisting. In order to facilitate the transverse embedding of the steel wire rope in the inner circular arc groove, the width of the notch of the inner circular arc groove is not less than the diameter of the steel wire rope. The inner circular arc groove is symmetrically arranged at the center of the guide plate 11, and each side is provided with a semicircular arc-shaped inner groove surface. The diameter of the circular arc of the inner circular arc groove is the same as the diameter of the steel wire rope, so that the steel wire rope will not loosen after being embedded in the inner circular arc groove, thereby playing a role of fixing the lifting point. Since the position of the hoisting rod 13 for hanging the end of the steel wire rope is closer to the rear side face A of the box 12 than the guide plate 11, as shown in Figure 6 , when the steel wire rope starts to be pulled tight during hoisting after being passed into the inner circular arc groove, the steel wire rope will be tightly attached to the inner groove surface of the inner circular arc groove close to the rear side face A of the box 12. In order to make the lifting point of the steel wire rope in the inner circular arc groove coincide with the center of gravity G of the scrap iron box in the same plane during hoisting, and achieve the balance of lifting, the offset amount of the position of the eccentric guide plate 11 is determined by the following scheme: the distance L3 between the inner groove surface of the inner circular arc groove of the guide plate 11 close to the rear side face A of the box 12 and the center line of the short side of the box 12 is half of the diameter of the steel wire rope, as shown in Figure 4 , so that the cross-sectional center of the steel wire rope passed into the inner circular arc groove is in the same vertical plane as the center of gravity G of the scrap iron box 1, thereby achieving the balance of hoisting.

[0044] Please refer to Figure 2 Two reinforcing plates 14 are respectively welded on the left and right side faces of the box 12 and are close to the rear side face A and the rear lower corner of the bottom plane of the box 12. The reinforcing plate 14 is a rectangular plate member, and its plane is close to the left and right side faces of the box 12.

[0045] Please refer to Figure 1 , Figure 2 and Figure 3 The hoisting rod 13 is a stepped cylindrical member with large outer diameter and small inner diameter, which is welded on the reinforcing plate 14 and is used for connecting the steel wire rope. The axis of the hoisting rod 13 is horizontally arranged and is perpendicular to the plate face of the reinforcing plate 14. Please refer to Figure 2 The angle between the line connecting the center of the hoisting rod 13 and the point of the projection of the center of gravity of the box 12 on the side face of the box and the bottom plane is C1, and C1 is less than 45°.

[0046] The hoisting and turning method for the scrap iron box for single-hook hoisting provided by the present application comprises the following contents:

[0047] Please refer to Figure 5 andFigure 6 Since the center of gravity G of the scrap box 1 is not at the same position as the lifting rod 13, during the lifting process of the scrap box 1, a single hook 3 is used to bear the weight of the scrap box 1 and the scrap. The wire rope 2 of the hook 3 passes through the inner arc groove of the guide plate 13 on the upper part of the scrap box 1, so that the lifting point coincides with the center of gravity G of the scrap box 1. The lower end of the wire rope 2 is tied to the lifting rod 13, so that the hook lifts the scrap box 1 and the scrap in a balanced manner. Before flipping, the wire rope 2 is moved from the inner arc groove of the guide plate 11 to the rear side A of the scrap box 1, and the lifting point is changed to the position of the lifting rod 13, so that the position of the lifting point is offset from the center of gravity G of the scrap box 1, forming a side-flipping torque. The hook 3 lifts and the wire rope 2 is separated from the rear side A of the box body 12, so that the scrap box 1 rotates, realizing the flipping of the scrap box 1 and completing the task of unloading the scrap.

[0048] The lifting and turning method includes the following specific steps:

[0049] Step 1, please refer to the following: Figure 5 and Figure 6 The lifting rod 13 on the scrap box 1 is connected to both ends of a braided steel wire rope 2. Then the steel wire rope 2 is passed through the inner arc groove of the guide plate 11 and hung on a single hook 3. Then the hook 3 rises, driving the scrap box 1 filled with scrap to rise.

[0050] Step two, please refer to the following: Figure 7 and Figure 8 The scrap box 1 is hoisted above the truck carrying scrap, the hook 3 is lowered so that the bottom of the scrap box 1 is in full contact with the scrap in the truck body or the truck body. Then the wire rope 2 in the guide plate 11 of the scrap box 1 is moved to the rear side A of the scrap box 1. Then the hook 2 is raised, which drives the scrap box 1 to flip and pour the scrap into the truck body, thus completing the scrap pouring task.

[0051] Step 3: Reverse and correct the attitude of the scrap box. Please refer to [link / reference]. Figure 9 ,Should Figure 9 The perspective is Figure 7 The diagram shows the rear view, and therefore the process from left to right is the process of the scrap box 1 flipping backward.

[0052] 1) Hoist the scrap box 1, after emptying the scrap, to the turning area. Lower the hook 3 to bring the scrap box 1 close to the ground plane. Then move the wooden block 4 to the opening side of the scrap box 1 until the two are in contact. The wooden block 4 supports the upper rear corner of the box 12 as the support point C on the ground. The height of the wooden block 4 is greater than half the height of the box 12 and less than the height of the box 12. The entire scrap box 1 lands at the landing point D.

[0053] 2) Then the hook 3 is lowered, the scrap box 1 is turned over around the turning point D automatically under the action of gravity as the hook 3 is lowered, and the front side B of the scrap box 1 contacts with the turning point after falling to the ground;

[0054] 3) Then the hook 3 is lowered until the steel wire rope 2 is passed through the inner circular arc groove of the guide plate 11 of the scrap box 1;

[0055] 4) Then the crab is moved to make the hook 3 be located above the bottom of the scrap box 1;

[0056] 5) Then the hook 3 is slowly lifted by a distance, so that the scrap box 1 is turned over around the turning point D until the bottom plane of the scrap box 1 contacts with the ground, and the turning over is finished;

[0057] Step four, the scrap box 1 after the turning over is finished is lifted from the turning point to the scrap chute under the machine according to the first step.

[0058] For those skilled in the art to which this invention pertains, without departing from the concept of the present invention, equivalent transformations and alternative solutions which are obvious without creative labor should be considered as belonging to the protection scope required by the present invention.

Claims

1. A scrap box for single hook lifting, characterized by: The iron scrap box comprises a box body, a guide plate, a lifting rod and a reinforcing plate. The box body is a right cuboid welded by section steel and steel plate, used for containing iron scrap, and its upper side is a rectangle, which is open as the import and export of iron scrap; two guide plates are respectively horizontally welded on the upper edges of the left and right side faces of the box body and are eccentrically arranged at the center lines of the short sides of the box body and close to the front side face of the box body; the guide plates are provided with inner circular arc grooves with notches for passing through steel wire ropes; two reinforcing plates are respectively welded on the rear lower corners of the left and right side faces of the box body close to the rear side face and the bottom plane of the box body; and the lifting rod axis is horizontally welded on the reinforcing plates and is perpendicular to the reinforcing plates, used for connecting the steel wire rope. The diameter of the circular arc of the inner circular arc groove is the same as the diameter of the steel wire rope, the width of the notch of the inner circular arc groove is not less than the diameter of the steel wire rope, and the distance between the inner groove face close to the rear side face of the box body and the center line of the short side of the box body is half of the diameter of the steel wire rope.

2. A scrap box for single hook lifting according to claim 1, characterised in that: The reinforcing plate is a rectangle plate, and its plane is close to the left and right side faces of the box body.

3. The scrap box for single hook lifting according to claim 1, characterized in that: The lifting rod is a stepped cylindrical member with large outer diameter and small inner diameter, and the angle between the line connecting the center of the lifting rod and the point where the gravity center of the box body is projected on the side face of the box body and the bottom plane is less than 45°.

4. The method for lifting and turning the scrap box with single hook lifting as claimed in claim 1, wherein: When the iron scrap box is lifted to carry the iron scrap, the upper end of the steel wire rope is connected with a single hook, the middle section is passed through the inner circular arc groove of the guide plate and is close to the inner groove face close to the rear side face of the box body, and the lower end is connected with the lifting rod, so that the lifting point is located on the guide plate and coincides with the gravity center of the iron scrap box in the same plane, and the hook balances the iron scrap box and the iron scrap; when the iron scrap box is overturned to pour the iron scrap, the upper end of the steel wire rope is connected with a single hook, the middle section is moved from the inner circular arc groove of the guide plate to the rear side face of the box body and is close to the rear side face, the lifting point is located on the lifting rod and is staggered with the gravity center of the iron scrap box, the hook is lifted and the steel wire rope is separated from the rear side face of the box body, so that the iron scrap box is overturned forwardly to realize the pouring of the iron scrap. The lifting and overturning method comprises the following specific steps. Step one: a steel wire rope is connected with a single hook at the upper end and is passed through the inner circular arc groove of the guide plate and is close to the inner groove face close to the rear side face of the box body at the middle section, and then the single hook is lifted to lift the iron scrap box and the iron scrap, thereby completing the hoisting of the iron scrap box; Step two: the iron scrap box is hoisted to the unloading place, the single hook is lowered to make the bottom plane of the iron scrap box fall to the ground, the middle section of the steel wire rope in the inner circular arc groove of the guide plate is moved to the rear side face of the box body and is close to the rear side face, then the single hook is lifted to overturn the iron scrap box, the iron scrap is poured out from the open upper side of the iron scrap box, and the task of pouring the iron scrap is completed; Step three: 1) the empty iron scrap box is hoisted to the site, the single hook is lowered to make the front upper corner of the box body of the iron scrap box fall to the ground, and the rear upper corner of the box body is supported on the ground by a cushion on the open upper side of the iron scrap box. 2) Lower the hook, the scrap box automatically overturns backward around the support point of the front upper corner of the box under the action of gravity until the front side of the box contacts the ground; 3) Continue to lower the hook and loosen the wire rope, then embed the middle section of the wire rope into the inner circular arc groove of the guide plate and tightly contact the inner groove surface near the rear side of the box; 4) Start the trolley to move the hook horizontally backward and exceed the position of the bottom plane of the box; 5) Slowly raise the hook and tighten the wire rope to overturn the box backward with its front lower corner as the landing support point until the bottom plane of the box contacts the ground, completing the correction of the overturning posture of the scrap box; Step four, in the manner of step one, the empty scrap box is hoisted back to the working position from the site.

5. The method for lifting and turning of a scrap box with a single hook according to claim 4, characterized in that: In the step three, the height of the cushion block is greater than half of the height of the box and less than the height of the box.

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