A multi-group steel coil saddle lifting tool

Abstract

The present invention discloses a multi-group steel coil saddle lifting tool, which includes a lifting lug, a vertical guiding mechanism, a connecting frame, a translation mechanism, and a limit type lifting arm. An opener is installed at the bottom of the lifting lug. The connecting frame is arranged at the bottom of the lifting lug and is connected to the lifting lug through the vertical guiding mechanism. The vertical guiding mechanism is used to realize the relative sliding of the lifting lug and the connecting frame in the vertical direction. The limit type lifting arm includes two groups symmetrically arranged along the vertical center line, and the limit type lifting arm is connected to the connecting frame through the translation mechanism. The vertical guiding mechanism is connected between the lifting lug and the connecting frame through a rhombic link motion mechanism composed of an upper layer pulling plate and a lower layer pulling plate. The translation mechanism is connected to the limit type lifting arm through symmetrically arranged connecting main boards and auxiliary boards, and can control the translation of the limit type lifting arm under the condition of variable height. It has the advantages of reliable use, low failure rate, convenient maintenance, etc. At the same time, it can meet the lifting requirements of steel coil saddles of various specifications, improve the loading and unloading efficiency of the steel coil saddle and reduce the loading and unloading time.

Description

Technical Field

[0001] The invention relates to the technical field of load hanging equipment, in particular to a multi-group steel coil seat frame hanger. Background Art

[0002] Traditional rail transport of rolled steel coils requires them to be placed vertically within the wagon and reinforced. However, during the rolling process at steel mills, the coils are often held horizontally, requiring a 90° turn before rail transport. During loading and unloading, approved vertical coil clamps are used to lift and transport the coils vertically. According to the latest rail transport regulations, horizontal coil transport is permitted when secured with dedicated coil stands, eliminating the need for 90° coil lifting and securing within the wagon.

[0003] When using coil racks for horizontal transport, the problem of coil rack turnover and loading and unloading arises. Once the coils are shipped to their destination, the racks are centrally stacked and transported back to the steel plant by truck for further shipment. When using wire ropes for on-site stacking and truck loading and unloading, the various sizes and configurations of coil racks require the involvement of multiple loaders and unloaders when mobilizing common lifting equipment. This is time-consuming, labor-intensive, and poses significant safety risks. Furthermore, cranes using electric spreaders are often limited by the site's power supply. Summary of the Invention

[0004] In view of the above-mentioned shortcomings in the prior art, the purpose of the present invention is to provide a multi-group steel coil frame hoist, which has the advantages of reliable use, low failure rate, and easy maintenance. At the same time, it can meet the hoisting needs of steel coil frames of various specifications, improve the loading and unloading efficiency of steel coil frames, reduce loading and unloading time, and improve the turnover and transportation efficiency of steel coil frames.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a multi-group steel coil seat frame hanger, including a lifting lug, a vertical guide mechanism, a connecting frame, a translation mechanism, and a limited lifting arm, the bottom of the lifting lug is equipped with an opener and closeer, the connecting frame is arranged at the bottom of the lifting lug and is connected to the lifting lug through the vertical guide mechanism, the vertical guide mechanism is used to achieve relative sliding of the lifting lug and the connecting frame in the vertical direction, the limited lifting arm includes two groups symmetrically arranged along the vertical center line, and the limited lifting arm is connected to the connecting frame through the translation mechanism;

[0006] The vertical guiding mechanism includes: guide rails fixedly connected to both sides of the lifting lug and arranged in the vertical direction, guide grooves opened on the inner side of the top of the connecting frame and nested with the convex guide rails, upper pull plates hinged at the top end to the lifting lug and symmetrically arranged along the vertical center line, lower pull plates hinged at the bottom end to the connecting frame and symmetrically arranged along the vertical center line, and a lock hole provided on the connecting frame and nested and clamped with the opening and closing device; the bottom end of the upper pull plate on the same side is hinged to the top end of the lower pull plate;

[0007] The translation mechanism includes: connecting main plates and auxiliary plates symmetrically arranged along the vertical center line, the top ends of the connecting main plates and auxiliary plates on the same side are hinged to the connecting frame, the bottom ends of the connecting main plates and auxiliary plates are hinged to the top ends of the limit type lifting arms on the same side, and the connecting main plates and auxiliary plates on the same side always remain parallel.

[0008] The lifting lug is hung with a general lifting hook of the crane, and an upper hinge shaft is installed on the lifting lug in a matching manner. At least two groups of upper pull plates arranged side by side are included on both sides of the vertical center line, and the top ends of each group of upper pull plates are rotatably installed on the upper hinge shaft.

[0009] A U-shaped card slot is fixedly connected to the top of the connecting frame, and the guide groove is opened on the inner side wall of the U-shaped clamp; a lower hinge shaft is installed on the connecting frame in a matching manner. At least two groups of lower pull plates arranged side by side are included on both sides of the vertical center line, and the bottom ends of each group of lower pull plates and the top ends of the connecting main plates are rotatably installed on the lower hinge shaft.

[0010] First hinge shafts are also installed on both sides of the connecting frame in a matching manner, second hinge shafts and third hinge shafts are installed on the top ends of the limit type lifting arms in a matching manner. At least two groups of auxiliary plates and connecting main plates arranged side by side are included on both sides of the vertical center line. The two ends of each group of auxiliary plates are respectively hinged to the first hinge shaft and the second hinge shaft on the same side, and the bottom ends of each group of connecting main plates are hinged to the third hinge shaft on the same side.

[0011] The top ends of each group of the connecting main plates are hinged to the lower hinge shaft.

[0012] A horizontally arranged positioning flat plate is fixedly connected to the top of the limit type lifting arm, and a support roller is rotatably installed at the bottom of the limit type lifting arm.

[0013] A box-shaped notch is opened on the side wall of the limit type lifting arm, the positioning flat plate is arranged at the top of the box-shaped notch, and a steel coil seat is lifted in the box-shaped notches of the two limit type lifting arms.

[0014] The opener includes: a mounting housing rotatably installed at the bottom of the lifting lug, a T-shaped rotating shaft rotatably installed in the inner cavity of the mounting housing with its bottom located outside the mounting housing, upper and lower helical teeth uniformly fixed on the outer wall of the T-shaped rotating shaft, an upper tooth sleeve slidably installed in the mounting housing and key-connected to the upper helical teeth, a lower tooth sleeve slidably installed in the mounting housing and key-connected to the lower helical teeth, a spacer sleeve wound around the periphery of the T-shaped rotating shaft and arranged between the upper and lower tooth sleeves, an end clamping plate fixedly connected to the top of the mounting housing through a longitudinal bolt to lock the T-shaped rotating shaft, a transverse pin shaft horizontally inserted into the side wall of the mounting housing to lock the spacer sleeve, a pin shaft clamping plate fixedly connected to the outer side wall of the mounting housing through a transverse bolt to fix the transverse pin shaft, an oil injection hole and an exhaust hole opened in the side wall of the mounting housing and communicating with the inner cavity of the mounting housing.

[0015] A hinge plate is also fixedly connected to the top of the mounting housing, and the hinge plate is hinged on the upper hinge shaft.

[0016] The hole shape of the lock hole is nested and combined with the end face shape of the bottom end of the T-shaped rotating shaft.

[0017] The beneficial effects of the present invention are as follows: The mechanical lifting tool is adopted to avoid being restricted by the power supply. The two groups of limited-position lifting arms can move horizontally, which can meet the lifting requirements of steel coil racks with various specifications and various forms of combinations. The special lifting tool for steel coil racks adopts a mechanical self-closing opening and closing method, which can complete the lifting and loading / unloading of different numbers of steel coil racks, completely replace the manual hoisting of steel wire ropes for steel coil racks, and has many advantages such as reliable use, low failure rate, and convenient maintenance. At the same time, it can improve the loading / unloading efficiency of steel coil racks, reduce the loading / unloading time, and improve the turnover and transportation efficiency of steel coil racks. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] Figure 2 is a schematic structural diagram of the lifting lug in the present invention;

[0020] Figure 3 is a schematic structural diagram of the opener in the present invention;

[0021] Figure 4 is a schematic structural diagram of the vertical guiding mechanism installed in a supporting manner with the lifting lug and the connecting frame in the present invention;

[0022] Figure 5 is a schematic structural diagram of the translational mechanism installed in a supporting manner with the connecting frame and the limited-position lifting arm in the present invention;

[0023] Figure 6 is a schematic structural diagram of the limited-position lifting arm installed in a supporting manner with the connecting frame in the present invention.

[0024] In the figure: 1 lifting lug, 11 upper hinge shaft, 21 guide rail, 22 guide groove, 23 upper pull plate, 24 lower pull plate, 25 lock hole, 3 connecting frame, 31 U-shaped card slot, 32 lower hinge shaft, 33 first hinge shaft, 41 connecting main board, 42 auxiliary board, 5 limit type lifting arm, 51 second hinge shaft, 52 third hinge shaft, 53 positioning plane board, 54 support roller, 55 box-shaped notch, 6 opener, 61 installation housing, 62 T-shaped rotating shaft, 63 upper end gear sleeve, 64 lower end gear sleeve, 65 end clamping plate, 66 transverse pin shaft, 67 spacer sleeve, 68 pin shaft clamping plate, 69 hinge plate, 7 universal hook. Specific embodiments

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment 1

[0027] Please refer to Figure 1 , a multi-group steel coil holder lifting tool, characterized in that it includes a lifting lug 1, a vertical guiding mechanism, a connecting frame 3, a translational mechanism, and a limit type lifting arm 5. An opener 6 is installed at the bottom of the lifting lug 1. The connecting frame 3 is arranged at the bottom of the lifting lug 1 and is connected to the lifting lug 1 through the vertical guiding mechanism. The vertical guiding mechanism is used to realize the relative sliding of the lifting lug 1 and the connecting frame 3 in the vertical direction. The limit type lifting arm 5 includes two groups symmetrically arranged along the vertical center line, and the limit type lifting arm 5 is connected to the connecting frame 3 through the translational mechanism;

[0028] The vertical guiding mechanism includes: guide rails 21 fixedly connected to both sides of the lifting lug 1 and arranged in the vertical direction, guide grooves 22 opened on the inner side of the top of the connecting frame 3 and nested with the protruding guide rails 21, upper pull plates 23 hinged at the top to the lifting lug 1 and symmetrically arranged along the vertical center line, lower pull plates 24 hinged at the bottom to the connecting frame 3 and symmetrically arranged along the vertical center line, and a lock hole 25 arranged on the connecting frame 3 and nested and clamped with the opener 6; the bottom end of the upper pull plate 23 on the same side is hinged to the top end of the lower pull plate 24;

[0029] The translational mechanism includes: connecting main boards 41 and auxiliary boards 42 symmetrically arranged along the vertical center line. The top ends of the connecting main boards 41 and the auxiliary boards 42 on the same side are hinged to the connecting frame 3. The bottom ends of the connecting main boards 41 and the auxiliary boards 42 are hinged to the top ends of the limit type lifting arms 5 on the same side, and the connecting main boards 41 and the auxiliary boards 42 on the same side always remain parallel.

[0030] Embodiment 2

[0031] Please refer to Figure 1-2 , 4 - 6, and in combination with Figure 1 , the vertical guiding mechanism, the translation mechanism, and the connecting frame 3 will be further described in detail.

[0032] The lifting lug 1 is hung with the general lifting hook 7 of the crane so that the lifting lug 1 can cooperate with the crane. The crane drives the lifting lug 1, the vertical guiding mechanism, the connecting frame 3, the translation mechanism, and the limit type boom 5 installed on the lifting lug 1. The upper hinge shaft 11 is installed on the lifting lug 1 in a fixed or rotationally nested manner. At least two groups of upper tension plates 23 on both sides of the vertical center line are arranged side by side, and the top ends of each group of upper tension plates 23 are rotatably installed on the upper hinge shaft 11.

[0033] The top of the connecting frame 3 is fixedly connected with a U-shaped card slot 31, and the guide groove 22 is opened on the inner side wall of the U-shaped clamp, which can make the connecting frame 3 be assembled with the lifting lug 1 and move relatively in the vertical direction, thereby adjusting the opening degree of the upper tension plates 23 on both sides. At the same time, the bottom structure of the opener 6 can extend into the lock hole 25 for commutation, so as to lock the lifting lug 1 and the connecting frame 3 through the opener 6 and keep them relatively fixed, making the opening degrees of the upper tension plate 23 and the lower tension plate 24 in the maximum state, and preparing for the hoisting work; the lower hinge shaft 32 is installed on the connecting frame 3 in a fixed or rotationally nested manner. At least two groups of lower tension plates 24 on both sides of the vertical center line are arranged side by side, and the bottom ends of each group of lower tension plates 24 are connected to the top end of the main board 41 and are rotatably installed on the lower hinge shaft 32. The upper tension plate 23 and the lower tension plate 24 are combined to form a rhombic link motion mechanism, which can control the distance between the lifting lug 1 and the connecting frame 3.

[0034] On both sides of the connecting frame 3, a first hinge shaft 33 is also installed. At the top of the limit type boom 5, a second hinge shaft 51 and a third hinge shaft 52 are installed. The first hinge shaft 33, the second hinge shaft 51, and the third hinge shaft 52 are all installed on the connecting frame 3 or the limit type boom 5 in a fixed or rotationally nested manner. At least two groups of auxiliary plates 42 and connecting main boards 41 on both sides of the vertical center line are arranged side by side. The two ends of each group of auxiliary plates 42 are respectively hinged on the first hinge shaft 33 and the second hinge shaft 51 on the same side to ensure the stable installation of each group of auxiliary plates 42. The bottom ends of each group of connecting main boards 41 are hinged on the third hinge shaft 52 on the same side.

[0035] The top ends of the connecting main boards 41 of each group are hinged on the lower hinge shaft 32. The connecting main board 41 and the auxiliary board 42 can rotate at the same angle, so that the two on the same side always remain parallel, and then the limit type lifting arms 5 installed at the bottoms of the connecting main board 41 and the auxiliary board 42 can be controlled to move horizontally under the condition of variable height, and then the steel coil seat to be lifted is placed between the two groups of limit type lifting arms 5, which is convenient for clamping and lifting multiple stacked steel coil seats.

[0036] Embodiment 3

[0037] Please refer to Figure 1 、 6 and, in combination with Embodiment 1, make a further supplementary description of the limit type lifting arm 5 in the present invention.

[0038] In order to determine the maximum number of steel coil seats lifted at one time and the maximum height limit of the limit type lifting tool, a horizontally arranged positioning flat plate 53 is fixedly connected to the top of the limit type lifting arm 5, so that the steel coil seat is located below the positioning flat plate 53 and is clamped and fixed by two groups of limit type lifting arms 5. A support roller 54 is rotatably installed at the bottom of the limit type lifting arm 5. When actually lifting the steel coil seat, multiple groups of steel coil seats are often stacked. The support roller 54 can support on the steel coil seat that has not been lifted, so as to synchronously lift the steel coil seat above this group of steel coil seats through the limit type lifting arm 5.

[0039] A box-shaped notch 55 is formed in the side wall of the limit type lifting arm 5, and the positioning flat plate 53 is arranged at the top of the box-shaped notch 55. The steel coil seat is lifted in the box-shaped notches 55 of the two groups of limit type lifting arms 5, and the overall height of the maximum lifting capacity of the two groups of limit type lifting arms 5 is less than the height of the box-shaped notch 55.

[0040] Embodiment 4

[0041] Please refer to Figure 1-4, and in combination with Embodiment 1, the opener 6 in the present invention is further supplemented and described. The opener 6 includes: a mounting housing 61 rotatably mounted at the bottom of the lifting lug 1, a T-shaped rotating shaft 62 rotatably mounted in the inner cavity of the mounting housing 61 and having its bottom disposed outside the mounting housing 61, upper and lower helical teeth uniformly fixed to the outer wall of the T-shaped rotating shaft 62, an upper tooth sleeve 63 slidably mounted in the mounting housing 61 and key-connected to the upper helical teeth, a lower tooth sleeve 64 slidably mounted in the mounting housing 61 and key-connected to the lower helical teeth, a spacer sleeve 67 wound around the periphery of the T-shaped rotating shaft 62 and disposed between the upper tooth sleeve 63 and the lower tooth sleeve 64, an end clamping plate 65 fixedly connected to the top of the mounting housing 61 by a longitudinal bolt and locking the T-shaped rotating shaft 62, a transverse pin shaft 66 horizontally inserted into the side wall of the mounting housing 61 and locking the spacer sleeve 67, a pin shaft clamping plate 68 fixedly connected to the outer side wall of the mounting housing 61 by a transverse bolt and fixing the transverse pin shaft 66, an oil injection hole and an exhaust hole opened in the side wall of the mounting housing 61 and communicating with the inner cavity of the mounting housing 61.

[0042] The T-shaped rotating shaft 62 maintains a state of rotating along its own axis under the nesting action of the end clamping plate 65. The spacer sleeve 67 is fixed in the inner cavity of the mounting housing 61 by the transverse pin shaft 66. Both the upper tooth sleeve 63 and the lower tooth sleeve 64 can move up and down in the space formed by the combination of the spacer sleeve 67, the T-shaped rotating shaft 62, and the inner wall of the mounting housing 61. The helical teeth on the inner side walls of the upper tooth sleeve 63 and the lower tooth sleeve 64 are respectively matched with the upper and lower helical teeth. During the rotation of the T-shaped rotating shaft 62, the upper tooth sleeve 63 and the lower tooth sleeve 64 gradually disengage from the upper and lower helical teeth under the action of the helical teeth, thereby enabling the T-shaped rotating shaft 62 to rotate freely. When the T-shaped rotating shaft 62 rotates a specific angle and stops, the upper tooth sleeve 63 and the lower tooth sleeve 64 are re-matched with the upper and lower helical teeth to achieve the limit of the T-shaped rotating shaft 62. The arrangement of the oil injection hole and the exhaust hole facilitates the injection of lubricating oil into the inner cavity of the mounting housing 61 and the discharge of the gas in the mounting housing 61.

[0043] A hinge plate 69 is also fixedly connected to the top of the mounting housing 61, and the hinge plate 69 is hinged to the upper hinge shaft 11 to ensure that the opener 6 is stably hinged to the bottom of the lifting lug 1.

[0044] The hole shape of the lock hole 25 is nested with the end face shape of the bottom end of the T-shaped rotating shaft 62, thereby controlling the locked state and the unlocked state of the T-shaped rotating shaft 62 and the lock hole 25.

[0045] Embodiment 5

[0046] Please refer to Figure 1-6, and in combination with Embodiments 1-4, the operating principle of the steel coil lifting seat frame of the present invention will be described. During the actual process of lifting the steel coil seat frame, multiple groups of steel coil seat frames are stacked vertically upward. First, control the upper pull plate 23 and the lower pull plate 24 to open to the maximum opening degree, and lock the opener 6 with the lock hole 25 to fix the connecting frame 3 and the lifting lug 1 and keep them relatively stationary, so as to facilitate the lifting of the stacked steel coil seat frames. Hook up the universal hook 7 with the lifting lug 1 and drive the lifting lug 1, the vertical guiding mechanism, the connecting frame 3, the translation mechanism, and the limit type lifting arm 5 to move synchronously above the steel coil seat frame. Manually control the separation of the two limit type lifting arms 5 and place the steel coil seat frame into the gap therebetween, so that the steel coil seat frame to be lifted is arranged between the box-shaped notches 55 of the two limit type lifting arms 5. Reverse the opener 6 and cancel the locking effect with the lock hole 25. During the process of the crane driving the whole upward movement, due to the self-weight of the steel coil seat frame and the structure of the present application itself, the steel coil seat frame will be stably fixed between the two limit type lifting arms 5, realizing the lifting work of multiple groups of steel coil seat frames.

[0047] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claim.

[0048] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A multi-group steel coil saddle lifting tool, characterized in that: The invention comprises a lifting lug (1), a vertical guide mechanism, a connecting frame (3), a translation mechanism, and a position-limiting lifting arm (5); a shutter (6) is mounted on the bottom of the lifting lug (1); the connecting frame (3) is arranged on the bottom of the lifting lug (1) and is connected to the lifting lug (1) through the vertical guide mechanism; the vertical guide mechanism is used to enable the lifting lug (1) and the connecting frame (3) to slide relative to each other in the vertical direction; the position-limiting lifting arm (5) comprises two groups symmetrically arranged along a vertical center line, and the position-limiting lifting arm (5) is connected to the connecting frame (3) through the translation mechanism; The vertical guide mechanism comprises: guide rails (21) fixed on both sides of the lifting lug (1) and arranged in the vertical direction, guide grooves (22) provided on the inner side of the top of the connecting frame (3) and nested with the raised guide rails (21), an upper pull plate (23) hinged on the lifting lug (1) and symmetrically arranged along the vertical center line, a lower pull plate (24) hinged on the connecting frame (3) and symmetrically arranged along the vertical center line, and a lock hole (25) provided on the connecting frame (3) and nested and engaged with the opener (6); the bottom end of the upper pull plate (23) on the same side is hinged to the top end of the lower pull plate (24); The translation mechanism comprises: a connecting main plate (41) and an auxiliary plate (42) symmetrically arranged along a vertical center line, wherein the top ends of the connecting main plate (41) and the auxiliary plate (42) on the same side are hinged to the connecting frame (3), and the bottom ends of the connecting main plate (41) and the auxiliary plate (42) are hinged to the top end of the position-limiting boom (5) on the same side, and the connecting main plate (41) and the auxiliary plate (42) on the same side are always kept in parallel arrangement; The lifting lug (1) is matched with a universal lifting hook (7) of a crane, and an upper hinge shaft (11) is matched with the lifting lug (1). The upper pull plates (23) on both sides of the vertical center line include at least two groups arranged side by side, and the top end of each group of upper pull plates (23) is rotatably mounted on the upper hinge shaft (11); The top of the connecting frame (3) is fixedly connected with a U-shaped card slot (31), and the guide slot (22) is opened on the inner side wall of the U-shaped caliper; the connecting frame (3) is equipped with a lower hinge shaft (32), and the lower pull plates (24) on both sides of the vertical center line include at least two groups arranged side by side, and the bottom end of each group of lower pull plates (24) is rotatably mounted on the lower hinge shaft (32) at the top end of the connecting main board (41); The two sides of the connecting frame (3) are also equipped with a first hinge shaft (33), the top of the limit-type boom (5) is equipped with a second hinge shaft (51) and a third hinge shaft (52), the auxiliary plates (42) and the connecting main plate (41) on both sides of the vertical center line each include at least two groups arranged side by side, the two ends of each group of auxiliary plates (42) are respectively hinged on the first hinge shaft (33) and the second hinge shaft (51) on the same side, and the bottom end of each group of connecting main plates (41) is hinged on the third hinge shaft (52) on the same side; The opener (6) includes: a mounting housing (61) rotatably mounted at the bottom of the lifting lug (1), a T-shaped rotating shaft (62) rotatably mounted in the inner cavity of the mounting housing (61) and having its bottom disposed outside the mounting housing (61), upper and lower helical teeth uniformly fixed to the outer wall of the T-shaped rotating shaft (62), an upper tooth sleeve (63) slidably mounted in the mounting housing (61) and key-connected to the upper helical teeth, a lower tooth sleeve (64) slidably mounted in the mounting housing (61) and key-connected to the lower helical teeth, a spacer sleeve (67) wound around the T-shaped rotating shaft (62) and disposed between the upper tooth sleeve (63) and the lower tooth sleeve (64), an end clamping plate (65) fixedly connected to the top of the mounting housing (61) by a longitudinal bolt and locking the T-shaped rotating shaft (62), a transverse pin shaft (66) horizontally inserted into the side wall of the mounting housing (61) and locking the spacer sleeve (67), a pin shaft clamping plate (68) fixedly connected to the outer side wall of the mounting housing (61) by a transverse bolt and fixing the transverse pin shaft (66), an oil injection hole and an exhaust hole formed in the side wall of the mounting housing (61) and communicating with the inner cavity of the mounting housing (61).

2. The multi-group steel coil saddle lifting device according to claim 1, wherein: The top ends of the respective connecting main plates (41) are hinged to the lower hinge shaft (32).

3. The multi-group steel coil saddle lifting device according to claim 1, characterized in that: A horizontally arranged positioning flat plate (53) is fixedly connected to the top of the limit type lifting arm (5), and a support roller (54) is rotatably mounted at the bottom of the limit type lifting arm (5).

4. The multi-group steel coil cradle sling according to claim 3, characterized in that: A box-shaped notch (55) is formed in the side wall of the limit type lifting arm (5), the positioning flat plate (53) is disposed at the top of the box-shaped notch (55), and a steel coil seat is lifted and transported in the box-shaped notches (55) of the two limit type lifting arms (5).

5. The multi-group steel coil seat hanger according to claim 1, characterized in that: An articulated plate (69) is further fixedly connected to the top of the mounting housing (61), and the articulated plate (69) is hinged to the upper hinge shaft (11).

6. The multi-group steel coil seat hanger according to claim 1, characterized in that: The hole shape of the lock hole (25) is nested and combined with the end face shape of the bottom end of the T-shaped rotating shaft (62).

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