Hoisting crane connecting device

Abstract

The utility model belongs to the technical field of transportation equipment, and particularly relates to a hoisting crane connecting device which comprises a lever lifting frame, an upper lifting lug and a lower lifting lug are fixed at the left end and the right end of the lever lifting frame, the upper lifting lug is used for being connected with a hook of a crane, and the lower lifting lug can be used for being connected with a lifting rope for hoisting workpieces; a movable lifting lug is further arranged on the lever lifting frame, the movable lifting lug can slide left and right on the lever lifting frame, a limiting structure used for fixing the position of the movable lifting lug is arranged on the movable lifting lug, and the movable lifting lug can also be used for being connected with a lifting rope to lift a workpiece; the problems that a small-tonnage crane in a workshop cannot directly hoist over-tonnage parts, and the cost is increased and the efficiency is reduced due to the fact that the crane is matched with the crane for hoisting are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of transportation equipment, and in particular relates to a hoisting crane connection device. Background Art

[0002] Hoisting crane is a common lifting machinery, which is widely used in many fields such as ports, shipping, machinery manufacturing, construction, etc. In machinery manufacturing workshops, cranes are often used to vertically lift, move, load and unload heavy objects, which brings convenience to processing and production, speeds up production efficiency, and reduces the labor intensity of workers. Since each hoisting crane has a rated lifting weight, if the production workshop needs to lift parts exceeding the rated lifting weight, a special crane is required to cooperate with the crane for lifting. The cost of contacting the crane is high, and the waiting time is long, which leads to increased production costs and reduced production efficiency of the enterprise. Utility Model Content

[0003] The utility model aims to provide a hoisting crane connection device to solve the problem that a small-tonnage crane in a workshop cannot directly hoist over-tonnage parts, and the connection with a crane to cooperate with the crane for hoisting leads to increased costs and reduced efficiency.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0005] A lifting crane connection device comprises a lifting bar frame, wherein the left and right ends of the lifting bar frame are fixed with an upper lifting ear and a lower lifting ear, the upper lifting ear is used to connect the hook of the crane, and the lower lifting ear can be used to connect the lifting rope for lifting the workpiece; the lifting bar frame is also provided with a movable lifting ear, the movable lifting ear can slide left and right on the lifting bar frame, the movable lifting ear is provided with a limiting structure for fixing the position of the movable lifting ear, and the movable lifting ear can also be used to connect the lifting rope to lift the workpiece.

[0006] Furthermore, the lifting bar frame includes a first lifting bar and a second lifting bar of the same structure, the left end and the right end of the first lifting bar and the second lifting bar are respectively connected into a whole by connecting plates, and the first lifting bar and the second lifting bar are respectively provided with a plurality of positioning holes along their length directions; upper lifting ears and lower lifting ears are provided at both ends of the first lifting bar and the second lifting bar, and movable lifting ears are provided on the first lifting bar and the second lifting bar; the movable lifting ear includes a fixedly connected moving part and an ear part, the moving part can be slidably mounted on the first lifting bar or the second lifting bar, and the limiting structure is a limiting bolt detachably mounted on the moving part, and the limiting bolt cooperates with the positioning hole to fix the movable lifting ear on the first lifting bar or the second lifting bar.

[0007] Furthermore, the upper lifting lug, the lower lifting lug and the movable lifting lug are all provided with lifting rings, and the lifting rings are used to connect the hook of the crane or the lifting rope for lifting the workpiece.

[0008] Furthermore, the first lifting bar and the second lifting bar each include an upper plate, a lower plate and two side plates, the upper plate, the lower plate and the two side plates constitute a hollow rectangular structure, and a number of ribs for increasing strength are provided between the two side plates; positioning holes are provided on the two side plates, and the positions of the positioning holes on the two side plates correspond.

[0009] Furthermore, a plurality of ribs for improving the strength of the lifting bar frame are provided in the middle of the first lifting bar and the second lifting bar, and the cross-sections of the ribs and the connecting plates are in a "[" shape.

[0010] Compared with the prior art, the utility model has the following beneficial technical effects:

[0011] The utility model can combine two cranes by arranging upper lifting ears on the lifting bar frame, so that the two cranes can cooperate to lift the workpiece that exceeds the rated lifting weight. There is no need to contact the crane to cooperate with the crane to lift the overweight workpiece, which not only saves the crane cost but also speeds up the lifting efficiency. By arranging movable lifting ears on the lifting bar frame, the length of the force arm can be adjusted according to the weight of the workpiece, so that the workpiece can move more smoothly during the lifting process. By arranging rib plates inside the first lifting bar and the second lifting bar, and arranging rib plates and connecting plates between the first lifting bar and the second lifting bar, the overall strength of the lifting bar frame can be improved. Moreover, the first lifting bar and the second lifting bar are both rectangular hollow structures, and the cross-sections of the rib plates and the connecting plates are in a "[" shape, which can reduce the weight of the lifting bar frame itself and ensure that heavier workpieces can be lifted, and the utility model has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a top view of the utility model;

[0013] Figure 2 It is a front view of the utility model;

[0014] Figure 3 for Figure 2 Sectional view of AA in the middle;

[0015] Figure 4 This is a schematic diagram of the lifting of the utility model;

[0016] Figure 5 This is the force analysis diagram of the lifting bar. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include:

[0019] The first lifting bar 1, the second lifting bar 2, the connecting plate 3, the rib plate 4, the upper plate 5, the lower plate 6, the side plate 7, the positioning hole 8, the rib plate 9, the upper lifting ear 10, the lower lifting ear 11, the movable lifting ear 12, the limit bolt 13, the stud bolt 14, the lifting ring 15, the crane 16, and the workpiece 17.

[0020] Example

[0021] like Figure 1 As shown, a lifting crane connection device includes a lifting bar frame, the lifting bar frame includes a first lifting bar 1 and a second lifting bar 2 with the same structure, the left end and the right end of the first lifting bar 1 and the second lifting bar 2 are respectively connected into a whole by a connecting plate 3, and a plurality of ribs 4 are welded to the middle of the first lifting bar 1 and the second lifting bar 2. In this embodiment, three ribs 4 are arranged, and the ribs 4 are used to improve the overall strength of the lifting bar frame; the connecting plate 3 and the ribs 4 are both made of long strips of steel (channel steel) with a "["-shaped cross-section; the first lifting bar 1 and the second lifting bar 2 both include an upper plate 5, a lower plate 6 and two side plates 7 that are fixedly connected, the upper plate 5, the lower plate 6 and the two side plates 7 form a hollow rectangular structure, and a plurality of ribs 9 are welded between the two side plates 7, and the ribs 9 are used to improve the strength of the first lifting bar 1 and the second lifting bar 2.

[0022] By arranging rib plates 9 inside the first lifting bar 1 and the second lifting bar 2, and arranging rib plates 4 and connecting plates 3 between the first lifting bar 1 and the second lifting bar 2, the overall strength of the lifting bar frame can be improved; and the first lifting bar 1 and the second lifting bar 2 are both rectangular hollow structures, and the cross-sections of the rib plates 4 and the connecting plates 3 are in a "[" shape, which can reduce the weight of the lifting bar frame itself and ensure that heavier workpieces 17 can be lifted, thereby improving practicality.

[0023] like Figure 1-3 As shown, upper lifting ears 10 are welded at both ends of the upper plate 5 of the first lifting bar 1 and the second lifting bar 2, lower lifting ears 11 are welded at both ends of the lower plate 6 of the first lifting bar 1 and the second lifting bar 2, and movable lifting ears 12 are provided on the first lifting bar 1 and the second lifting bar 2; the movable lifting ears 12 include a movable part and an ear part that are welded and fixed, the movable part is sleeved on the first lifting bar 1 or the second lifting bar 2, the movable part can slide left and right on the first lifting bar 1 or the second lifting bar 2, and a limiting structure for fixing the position of the movable lifting ears 12 is provided on the movable part; the first lifting bar 1 and the second lifting bar 2 are arranged along their length A plurality of positioning holes 8 are respectively opened in the degree direction, the positioning holes 8 are arranged on the side plates 7, and the positions of the positioning holes 8 on all the side plates 7 correspond to each other. The limiting structure of this embodiment is a limiting bolt 13 detachably mounted on the movable part, and the limiting bolt 13 cooperates with the positioning hole 8 to fix the movable lifting ear 12 on the first lifting bar 1 or the second lifting bar 2; the upper lifting ear 10, the lower lifting ear 11 and the movable lifting ear 12 are rotatably connected with a lifting ring 15 through a stud bolt 14, and the lifting ring 15 can be used to connect the hook of the crane 16 or the lifting rope of the lifting workpiece 17.

[0024] When it is necessary to lift a workpiece 17 that exceeds the rated lifting weight of the crane 16, the connection device of this embodiment is required to connect the two cranes 16 for lifting. When in use, the lifting ring 15 of the upper lifting ear 10 is connected to the hooks of the two cranes 16, and then the lifting rope is connected to the lifting ring 15 of the lower lifting ear 11 or the movable lifting ear 12 according to the actual lifting needs. The lifting rope can also be directly connected to the lower lifting ear 11 and the movable lifting ear 12; this embodiment shows the use of the movable lifting ear 12 and the lower lifting ear 11 to lift the workpiece 17, and the connection method is as follows Figure 4 As shown, the movable end of the lifting rope is connected to the workpiece 17, and the distance between the movable lifting ear 12 and the lower lifting ear 11 at the right end is calculated according to the force formula of the lifting bar (see Formula 1-Formula 3). The movable lifting ear 12 is adjusted to a suitable position according to the calculation result, and the movable lifting ear 12 is fixed to the corresponding positioning hole 8 by the limit bolt 13. The two cranes 16 are started to realize the lifting of the overweight workpiece 17. It is necessary to contact an additional crane to cooperate with the crane to lift the overweight workpiece, which not only saves the crane cost but also speeds up the lifting efficiency.

[0025] according to Figure 5 It can be seen that:

[0026]

[0027]

[0028] R B =(G+g)-R A Formula 3

[0029] Among them, g is the deadweight of the lifting bar, in tons; G is the weight of the workpiece, in tons; L is the center size of the movable lifting ring, R A Auxiliary crane load, in tons; R B Main crane, load-bearing unit is tons.

[0030] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A hoisting crane connection device, characterized in that: It includes a bar lifting frame, the left and right ends of which are fixed with upper and lower lifting ears, the upper lifting ear is used to connect the hook of the crane, and the lower lifting ear can be used to connect the lifting rope for lifting the workpiece; the bar lifting frame is also provided with a movable lifting ear, which can slide left and right on the bar lifting frame, and the movable lifting ear is provided with a limiting structure for fixing the position of the movable lifting ear, and the movable lifting ear can also be used to connect the lifting rope to lift the workpiece.

2. A hoisting crane connection device according to claim 1, characterized in that: The lifting bar frame includes a first lifting bar and a second lifting bar of the same structure, the left end and the right end of the first lifting bar and the second lifting bar are respectively connected into a whole by connecting plates, and the first lifting bar and the second lifting bar are respectively provided with a plurality of positioning holes along their length directions; upper lifting ears and lower lifting ears are provided at both ends of the first lifting bar and the second lifting bar, and movable lifting ears are provided on the first lifting bar and the second lifting bar; the movable lifting ear includes a fixedly connected moving part and an ear part, the moving part can be slidably mounted on the first lifting bar or the second lifting bar, and the limiting structure is a limiting bolt detachably mounted on the moving part, and the limiting bolt cooperates with the positioning hole to fix the movable lifting ear on the first lifting bar or the second lifting bar.

3. A hoisting crane connection device according to claim 1, characterized in that: The upper lifting lug, the lower lifting lug and the movable lifting lug are all provided with lifting rings, and the lifting rings are used to connect the hook of the traveling crane or the lifting rope for lifting the workpiece.

4. A hoisting crane connection device according to claim 2, characterized in that: The first lifting bar and the second lifting bar both include an upper plate, a lower plate and two side plates, which constitute a hollow rectangular structure, and a number of ribs are provided between the two side plates to increase the strength; positioning holes are provided on the two side plates, and the positions of the positioning holes on the two side plates correspond.

5. A hoisting crane connection device according to claim 2, characterized in that: A plurality of ribs for improving the strength of the lifting bar frame are also provided in the middle of the first lifting bar and the second lifting bar, and the cross-sections of the ribs and the connecting plates are in a "[" shape.

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