CN214422091U - Clamping lifting appliance for lifting steel billets - Google Patents
Clamping lifting appliance for lifting steel billets Download PDFInfo
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- CN214422091U CN214422091U CN202022115742.2U CN202022115742U CN214422091U CN 214422091 U CN214422091 U CN 214422091U CN 202022115742 U CN202022115742 U CN 202022115742U CN 214422091 U CN214422091 U CN 214422091U
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Abstract
A clamping lifting appliance for lifting and taking steel billets comprises a lifting rod, a supporting limit, two clamping hooks and a rhombic connecting rod mechanism, wherein the rhombic connecting rod mechanism consists of two connecting rods and connecting rod ends of the two clamping hooks; one end of the suspender is connected with a crane hook through a fifth shaft, the other end of the suspender is connected with an obtuse angle formed by two connecting rods in the rhombic connecting rod mechanism through the first shaft, a third shaft and a fourth shaft are respectively arranged on two acute angles formed by the connecting rods and the connecting rod ends of the clamping hooks in the rhombic connecting rod mechanism, the supporting limiting end is installed on the fourth shaft, the other end of the rhombic connecting rod mechanism is installed on the third shaft through a small loose piece, the connecting rod ends of the two clamping hooks are fixed through a second shaft to form another obtuse angle of the rhombic connecting rod mechanism, and the angle between the connecting rod end and the clamping end of each clamping hook is 150 degrees. The device is based on the lever principle, and utilizes dead weight and frictional force to press from both sides the useless steel billet of getting on the hot run-out table, and the hook of hoist can open and shut voluntarily, and anchor clamps can be spacing voluntarily.
Description
Technical Field
The utility model belongs to the technical field of the metallurgical machinery, concretely relates to hang and get steel billet centre gripping hoist method.
Background
In a metallurgical system, waste products such as billet bending deformation and the like often appear in a hot rolling system due to various reasons, and a special clamping lifting appliance is used for clamping the waste billets on a hot output roller way. Because the clamp is heavy, the hook is too hard to be pulled open by manpower, the working environment is severe (the steel billet is high in temperature), and the limiting device is not reasonable to be operated manually.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide one kind and hang and get steel billet centre gripping hoist to utilize dead weight, frictional force clamp to get the useless steel billet on the hot run-out table, the hook of hoist can open automatically and close, anchor clamps can be automatic spacing.
The utility model provides a clamping sling for hoisting and taking steel billets, which comprises a suspender, a supporting limit, two clamping hooks and a rhombic connecting rod mechanism consisting of two connecting rods and connecting rod ends of the two clamping hooks; one end of the suspender is connected with a crane hook through a fifth shaft, the other end of the suspender is connected with an obtuse angle formed by two connecting rods in the rhombic connecting rod mechanism through the first shaft, a third shaft and a fourth shaft are respectively arranged on two acute angles formed by the connecting rods and the connecting rod ends of the clamping hooks in the rhombic connecting rod mechanism, the supporting limiting end is installed on the fourth shaft, the other end of the rhombic connecting rod mechanism is installed on the third shaft through a small loose piece, the connecting rod ends of the two clamping hooks are fixed through a second shaft to form another obtuse angle of the rhombic connecting rod mechanism, and the angle between the connecting rod end and the clamping end of each clamping hook is 150 degrees.
As a further technical scheme of the utility model, the exposed core of holding hook is equipped with decurrent hook portion, installs heat-resisting wear-resisting material between the hook portion of two holding hooks.
Furthermore, the heat-resistant and wear-resistant material is a 65Mn steel plate, and the surface of the steel plate is provided with grid grooves.
Furthermore, kidney-shaped grooves are milled at the third shaft and the fourth shaft of the rhombic connecting rod mechanism.
Furthermore, two ends of the first shaft, the second shaft, the third shaft, the fourth shaft and the fifth shaft are fixed through crown nuts, and split pins are inserted into the split nuts.
Furthermore, a gap of 0.30-0.40 mm is formed between each shaft and the matched hole.
Furthermore, two limiting shafts are respectively arranged on two connecting rods of the rhombic connecting rod mechanism in a penetrating mode.
Furthermore, the material of the rhombic connecting rod mechanism is a D36 steel plate, and the material of the first shaft and the fourth shaft is a 42CrMo forged piece.
The utility model has the advantages that,
1. the clamping hook is designed to form an included angle of 30 degrees, so that the moving space of the rhombic connecting rod mechanism is increased, the clamping force arm is increased, and the clamping is easier.
2. The hook mouth of the clamping hook is provided with heat-resistant and wear-resistant materials, and the surface of the steel plate is milled with latticed grooves, so that the friction force between the steel plate and the steel billet is increased.
3. The supporting limit is provided with a small movable block, and the actions of non-working placement, empty hook lifting, clamping lifting steel damage and the like of the lifting appliance can be automatically realized through limit control.
Drawings
Fig. 1 is a front view of the structure of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a schematic view of the structure of the clamping hook of the present invention;
FIG. 4 is a schematic view of the structure of the support limit and the small loose piece of the present invention;
fig. 5 is a schematic view of force analysis of the present invention.
Detailed Description
Referring to fig. 1-4, the embodiment provides a clamping hanger for lifting and taking steel billets, which includes a hanger rod 1, a support limit 2, two clamping hooks 4, and a diamond-shaped link mechanism formed by two link rods 3 and link rod ends of the two clamping hooks 4; one end of a suspender 1 is connected with a crane hook 10 through a fifth shaft 9, the other end is connected with an obtuse angle formed by two connecting rods 3 in a rhombic connecting rod mechanism through a first shaft 5, a third shaft 7 and a fourth shaft 8 are respectively arranged on two acute angles formed by the connecting rods 3 and the connecting rod ends of clamping hooks 4 in the rhombic connecting rod mechanism, one end of a support limit 2 is installed on the fourth shaft 8, the other end is installed on the third shaft 7 through a small movable block, the connecting rod ends of the two clamping hooks 4 are fixed through a second shaft 6 to form another obtuse angle of the rhombic connecting rod mechanism, and the angle between the connecting rod end and the clamping end of each clamping hook 4 is 150 degrees.
The connecting line of the central lines of the clamping hooks 4 forms an angle of 30 degrees around the center of the second shaft 6, so that the opening distance between the hooks and the connecting rod 3 can be increased, the clamping force arm can also be increased, the length of L' is properly increased on the premise of meeting the clamping, the length of the connecting rod is correspondingly increased, and the dead weight of the part above the second shaft 6 is also increased.
The clamping end of the clamping hook 4 is provided with a downward hook part, and a heat-resistant and wear-resistant material 11 is arranged between the hook parts of the two clamping hooks.
The heat-resistant and wear-resistant material 11 is a 65Mn steel plate, and the surface of the steel plate is provided with grid grooves, so that the friction force between the steel plate and a billet is increased.
The third shaft 7 and the fourth shaft 8 of the rhombic link mechanism are milled with kidney-shaped grooves to prevent uneven side surfaces of a billet, and the four hooks are not clamped simultaneously, so that the hooks can automatically adjust clamping.
Two ends of the first shaft 5, the second shaft 6, the third shaft 7, the fourth shaft 8 and the fifth shaft 9 are fixed through crown nuts, and split pins are inserted in the split pins.
Gaps of 0.30-0.40 mm are formed between each shaft and the matched holes.
Two limiting shafts are respectively arranged on two connecting rods 3 of the rhombic connecting rod mechanism in a penetrating mode, and a hanger rod and a fifth shaft 9 are prevented from rotating to the lower side around a first shaft 5 when the hanger is not used.
The material of the rhombic connecting rod mechanism is D36 steel plate, and the material of the first shaft 5 and the fourth shaft 8 is 42CrMo forged piece.
As shown in fig. 5, the clamping slings need to satisfy the following conditions:
the ability of the gripping spreader to grip a steel billet is generated by means of the friction force F generated by the normal pressure N of the hook jaw, i.e.:
q (Q is the billet weight).
And the normal pressure N is generated by the link tension S acting through the lever principle. If neglecting the hook dead weight, the connecting rod pulling force is:
the normal pressure N can be determined from the equilibrium condition of a hook, and the moment equilibrium equation around the hinge point O is:
∑MO(Fi)＝0，S·a+F·b-N·c＝0
bringing formula (1) into:
the friction force for clamping the billet is not ensured to be greater than or equal to Q/2, namely F is greater than or equal to Q/2, and F is equal to N mu (mu is the friction coefficient between the jaw and the billet), so the condition that the hook can clamp the billet is as follows:
N≥Q/2μ (3)
according to the clamping conditions, the hook size is satisfied by the formulas (2) and (3):
the implementation method of the actions of non-working placement of the lifting appliance, empty hook lifting, clamping and lifting of steel damages and the like comprises the following steps of,
when the sling is not used in daily life, the sling is placed on a special place or the ground, and the third shaft is positioned at or beyond the position shown in figure 4-a.
Secondly, when the steel billet is to be transferred, under the coordination of a traveling crane (firstly up and then down), the third shaft firstly turns left and then turns right, as shown in figure 4-b, the movable block turns upwards, and the third shaft enters the limiting groove to realize limiting.
Thirdly, the lifting appliance is arranged above the steel billet, the hook is propped against the steel billet under the driving, the hook is opened by the dead weight, the third shaft moves out of the limiting groove from the position of figure 4-b to the right, and the loose piece falls. The traveling crane is hoisted again, and the third shaft is in a clamping state leftwards.
And fourthly, the billet is lifted to the destination, laid down, opened by the dead weight, moved to the right by the third shaft and enters the limit groove (as shown in figure 4-b). And finally, hoisting the travelling crane and removing the empty sling.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (8)
1. A clamping lifting appliance for lifting and taking steel billets is characterized by comprising a lifting rod, a supporting limit, two clamping hooks and a rhombic connecting rod mechanism consisting of two connecting rods and connecting rod ends of the two clamping hooks; the one end of jib links to each other with the driving lifting hook through fifth axle, the other end through the primary shaft with the obtuse angle that two connecting rods constitute links to each other in the rhombus link mechanism, by in the rhombus link mechanism the connecting rod with be equipped with third axle and fourth axle on two acute angles that the connecting rod end of holding hook constitutes respectively, support spacing one end and install in the fourth axle, the other end passes through little loose piece and installs on the third axle, two the connecting rod end of holding hook passes through the fixed constitution of secondary shaft another obtuse angle of rhombus link mechanism, the angle is 150 degrees between the connecting rod end of holding hook and the exposed core.
2. A billet-gripping sling according to claim 1, wherein the gripping ends of the gripping hooks are provided with downward hook portions, and a heat-resistant and wear-resistant material is arranged between the hook portions of the gripping hooks.
3. The apparatus as claimed in claim 2, wherein the heat and wear resistant material is 65Mn steel plate, and the surface of the steel plate is provided with grid grooves.
4. The apparatus of claim 1, wherein said diamond-shaped linkage has kidney slots milled in said third and fourth axes.
5. The apparatus as claimed in claim 1, wherein the first shaft, the second shaft, the third shaft, the fourth shaft and the fifth shaft are fixed at both ends by crown nuts, and a cotter pin is inserted into the cotter pin.
6. The apparatus of claim 1, wherein the shaft is spaced from the hole by a distance of 0.30-0.40 mm.
7. The apparatus as claimed in claim 1, wherein a restraining shaft is provided through each of the two connecting rods of the diamond-shaped linkage.
8. The lifting billet holding sling according to claim 1, wherein the material of the diamond-shaped linkage mechanism is D36 steel plate, and the material of the first shaft and the fourth shaft is 42CrMo forging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022115742.2U CN214422091U (en) | 2020-09-23 | 2020-09-23 | Clamping lifting appliance for lifting steel billets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022115742.2U CN214422091U (en) | 2020-09-23 | 2020-09-23 | Clamping lifting appliance for lifting steel billets |
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| Publication Number | Publication Date |
|---|---|
| CN214422091U true CN214422091U (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022115742.2U Active CN214422091U (en) | 2020-09-23 | 2020-09-23 | Clamping lifting appliance for lifting steel billets |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225065A (en) * | 2020-09-23 | 2021-01-15 | 南京中船绿洲机器有限公司 | Special clamping lifting appliance for lifting steel billets |
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2020
- 2020-09-23 CN CN202022115742.2U patent/CN214422091U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112225065A (en) * | 2020-09-23 | 2021-01-15 | 南京中船绿洲机器有限公司 | Special clamping lifting appliance for lifting steel billets |
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