Wheel inner circle hoisting device and hoisting method thereof

Abstract

The invention discloses a wheel inner circle hoisting device and a hoisting method thereof, and relates to the technical field of wheel hoisting. The wheel inner circle hoisting device and a hoisting method thereof of the invention include a horizontally arranged hanger, a hanging arm is vertically installed at the outer end of the hanger through a fixed plate, the hanging arm is arranged inwardly retracted, and a hook is vertically movably installed at its lower end. The hanging arms installed at equal intervals form a self-centering structure under the action of gravity, so as to avoid the situation of unstable lifting or even tipping caused by eccentricity; a moving rod is also vertically installed in the middle of the hanger body, and is driven by an external motor to tighten the hook vertically movably installed at its lower end, so as to facilitate the hook to be inserted into the inner hole of a wheel with a smaller diameter, so as to adapt to wheels of various specifications; after the hook is inserted into the stacked wheels, the gravity of the hanging arm and the hook is used to facilitate the opening of the hanging arm, so that the hook connected to its lower end is closely attached to the inner wall of the inner hole of the wheel, so as to ensure the lifting stability, so as to facilitate the lifting of the stacked wheels.

Description

Technical Field

[0001] The invention relates to the technical field of wheel hoisting, in particular to a wheel inner circle hoisting device and a hoisting method thereof. Background Art

[0002] In the steel industry, during the production of train wheels and wheel hubs, the wheels need to be hoisted and transported many times, such as hoisting the wheels onto transport rollers and hoisting the wheels onto machine tools for cutting. However, due to the unique tread shape and weight of the wheels, the lifting efficiency of general hoists is greatly limited, especially in large-scale production situations, general hoists cannot meet production needs.

[0003] The main problem with the hoisting equipment currently used in the production of train wheels is that the hook cannot be opened and closed automatically, and manual assistance is required to place the hook, and coordination with the crane operator is required. Due to the heavy weight of train wheels and the high processing temperature during the rolling process, the lifting operation is quite difficult and the production efficiency is low.

[0004] After searching, it is found that there are relevant patents for solving the above-mentioned shortcomings. For example, the Chinese patent application number is 2007100206343, the application date is March 15, 2007, and the authorization announcement date is September 16, 2009. It discloses a wheel outer circle hoist and its hoisting method. The hoist is provided with a hook control mechanism, the length of the lower crossbeam is greater than the upper crossbeam, the hoisting rod and the hanger, the hanger and the lower crossbeam, the positioning cone sleeve and the hanger are respectively fastened and connected, the two ends of the welding chain are respectively connected to the two ends of the hanger and the upper crossbeam, the positioning claw is hingedly connected to the hanger, the hanger, the sliding sleeve and the upper crossbeam are all sleeved on the hanger to form a sliding connection, and the above structures are all symmetrical structures with the hanger as the center. The above technical scheme is adopted to make the wheel outer circle hoist reasonable in structure, compact in configuration, low in investment, low in operating cost, and pollution-free; it is easy to operate, safe and reliable in operation; it has high efficiency in loading wheels, uniform force, reduces labor intensity, improves production efficiency, and is conducive to reducing production costs. However, since train wheels are generally heavy and come in many sizes, ordinary hoists may need to be adjusted or replaced for a long time before they can be lifted with hoists of different specifications and models. For some heavy wheels, the number of wheels that can be lifted at one time is limited, and they cannot be lifted in stacks. Under large-scale production, the efficiency of wheel lifting is greatly limited. Summary of the invention

[0005] 1. Technical problem to be solved by the invention

[0006] In view of the fact that the wheel-specific lifting equipment in the prior art cannot be applied to wheels of various specifications, the present invention proposes a wheel inner circle lifting equipment and a lifting method thereof, comprising a horizontally arranged hanger, a lifting arm being vertically installed at the outer end of the hanger through a fixed plate, the lifting arm being arranged inwardly retracted, and a lifting hook being vertically movably installed at the lower end thereof. After the lifting hook is inserted into the stack of wheels, the gravity of the lifting arm and the lifting hook is utilized to facilitate the opening of the lifting arm, so that the lifting hook connected to the lower end thereof is tightly attached to the inner wall of the inner hole of the wheel, thereby ensuring the lifting stability, thereby facilitating the lifting of the stack of wheels.

[0007] 2. Technical solution

[0008] In order to achieve the above object, the technical solution provided by the present invention is:

[0009] A wheel inner circle hoisting device includes a horizontally arranged hanger, the hanger includes a hanger body, a plurality of groups of extending arms are arranged at equal intervals on the periphery of the hanger body, and a lifting arm is vertically installed on the outer end of the extending arm through a fixing plate; the lifting arm is arranged inwardly retracted, and a hook is vertically and movably installed at its lower end. The lifting arm installed at equal intervals forms a self-centering structure under the action of gravity, which can ensure that the hook connected to its lower end is evenly stuck on the lower surface of the center hole of the wheel, and completely avoid the situation of eccentricity leading to unstable lifting or even overturning. When hoisting the wheel, after the hook is vertically inserted into the inner hole of the wheel, the outer side of the hook contacts the inner wall of the inner hole of the wheel, and the lifting arm is in an open state by utilizing the gravity of the lifting arm and the hook, and the hook connected thereunder is also in an open state and is tightly attached to the inner wall of the inner hole of the wheel to ensure lifting stability, thereby facilitating the lifting of stacked wheels; in order to adapt to wheels of different specifications and sizes, the hoisting equipment is easy to adjust.

[0010] A further technical solution is that a moving rod is vertically installed in the middle of the hanger body and is driven by an external motor. The motor is installed above the hanger body through a motor mounting plate; the moving rod is arranged on the inner side of the boom, and the boom and the moving rod are movably connected by a connecting rod. The motor is driven to drive the moving rod to move upward, and then the connecting rod is pulled upward. The connecting rod drives the boom connected at its lower end to move upward and then tightens the hook vertically movably installed at its lower end, so that the hook can be inserted into the inner hole of a wheel with a smaller diameter.

[0011] A further technical solution is that a rotating mechanism is provided on the inner side of the connection between the boom and the hook, through which the hook can be rotated at a certain angle relative to the boom, thereby ensuring that the upper half of the hook is in an open state, to ensure that the outer side of the hook is tightly attached to the inner wall of the inner hole of the wheel, so as to achieve the purpose of further clamping the stacked wheels, and to avoid the stacked wheels mounted on the hook from shaking when the lifting equipment is lifted, affecting the stability of the lifting operation.

[0012] A further technical solution is that the hook comprises a hook body, which is vertically inclined at an angle to the horizontal plane, and the length of the hook body determines the number of wheels that can be lifted at one time; a hook body is provided at the lower end of the hook body, and the hook is in a state of tightening at the top and releasing at the bottom, and after the hook is inserted into the stacked wheels, the hook body drives the hook body to open outwards by gravity, so that after the hook body passes through the stacked wheels, it can be engaged on the bottom surface of the bottommost wheel.

[0013] A further technical solution is that the boom includes a boom body, which is an L-shaped structure, and its two outer ends are respectively provided with a fixed plate connecting hole and a connecting rod mounting hole. The fixed plate connecting hole is arranged at one end of the lower L-shaped short arm for installing the connecting rod; the connecting rod mounting hole is arranged at one end of the upper L-shaped long arm, and a pin is inserted therein for connecting the fixed plate.

[0014] A further technical solution is that the rotating mechanism includes a connecting block I and a connecting block II, wherein the connecting block I is mounted on the inner side surface of the boom body near one end of the connecting hole of the fixed plate and is fixed by a bolt I; the connecting block II is mounted on the inner side surface of the hook body and is fixed by a bolt II, and the connecting block I and the connecting block II are movably connected via a pin shaft, and the connecting block I and the connecting block II are relatively rotated to drive the boom body and the hook body to rotate relative to each other, thereby facilitating further clamping the hook body and the wheel.

[0015] A further technical solution is that a sliding mechanism is provided on the outer side of the connection between the boom body and the hook body on the side away from the rotating mechanism; the sliding mechanism includes a fixed block I and a fixed block II fixedly mounted on the outer sides of the boom body and the hook body, a bolt III is vertically coaxially sleeved in the middle of the fixed block I and the fixed block II, the outer end of the bolt III is fastened by a locking nut, and the fixed block I and the fixed block II are slid up and down to drive the boom body and the hook body to rotate relative to each other with the pin shaft as the hinge point, and the relative rotation angle between the two is 1 to 3°.

[0016] A further technical solution is that a disc spring is also sleeved on the bolt III, and the disc spring is arranged between the bolt III and the fixed block I. When the downward force applied to the rod is removed, the elastic recovery of the disc spring is utilized to push the fixed block I to reset, thereby driving the boom body to reset, so as to facilitate the hook to be pulled out of the wheel after lifting.

[0017] A method for hoisting a wheel inner circle hoisting device comprises the following steps:

[0018] Step 1: Lift the wheel inner circle lifting equipment: lift the wheel inner circle lifting equipment to the top of the stacked wheels by lifting equipment, align the lifting hook with the inner hole of the wheel, and insert the lifting hook into the stacked wheels;

[0019] Step 2, unfold the hook: the hook continues to be inserted downward into the inner hole of the wheel until the hook body passes through the lowermost wheel and stops, the hook body passes through the inner hole of the wheel and is engaged with the lower surface of the lowermost wheel; under the action of gravity, the boom is in an open state, and the hook body connected to its lower end is also in an open state, a gap is formed between the upper half of the hook body and the inner wall of the inner hole of the wheel, and the lower half of the hook body contacts the inner wall of the inner hole of the wheel;

[0020] Step 3, tighten the hook: continue to push the connecting rod downward, and then push the boom body to drive the fixed block I to slide upward along the length direction of the bolt III. The hook body connected at its lower end is acted upon by the force of the boom body, and drives the fixed block II to slide downward along the length direction of the bolt III, so that the hook body is bent downward by 1 to 3 degrees relative to the boom body, thereby ensuring that the upper half of the hook body is also in contact with the inner wall of the wheel inner hole;

[0021] Step 4: Lift the stacked wheels: Use the lifting equipment to lift the lifting equipment with the stacked wheels to the required position to complete the lifting operation of the stacked wheels.

[0022] A further technical solution, in step one, for the inner hole of the wheel with a small diameter, before inserting the hook into the inner hole of the wheel, start the motor, drive the movable rod to move upward, and then pull the connecting rod upward, the connecting rod drives the boom connected to its lower end to move upward and tighten the hook installed vertically at its lower end, the hook is in a tightened state to facilitate its insertion into the inner hole of the wheel with a smaller diameter.

[0023] 3. Beneficial effects

[0024] Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects:

[0025] (1) A wheel inner circle hoisting device and a hoisting method thereof of the present invention comprises a horizontally arranged hanger, wherein a lifting arm is vertically installed at the outer end of the hanger through a fixing plate, and the lifting arm is arranged in an inwardly retracted manner. By utilizing the gravity of the lifting arm, after the hook is vertically inserted into the inner hole of the wheel, the lifting arm is in an open state, and the hook connected thereunder is also in an open state and is tightly attached to the inner wall of the inner hole of the wheel to ensure the lifting stability, thereby facilitating the lifting of stacked wheels, thereby adapting to wheels of different specifications and sizes and improving the lifting efficiency; the lifting arms installed at equal intervals form a self-centering structure under the action of gravity, which can ensure that the hook connected at the lower end thereof is evenly stuck on the lower surface of the center hole of the wheel, completely avoiding the situation of unstable lifting or even tipping due to eccentricity;

[0026] (2) A wheel inner circle hoisting device and hoisting method of the present invention, wherein a moving rod is vertically installed in the middle of the hanger body, and is driven by an external motor to drive the moving rod to move upward, thereby pulling the connecting rod upward, and the connecting rod drives the hanging arm connected to its lower end to move upward, thereby tightening the hook vertically movably installed at its lower end, so as to facilitate the hook to be inserted into the inner hole of the wheel with a smaller diameter;

[0027] (3) A wheel inner circle lifting device and a lifting method thereof of the present invention, wherein a rotating mechanism is provided on the inner side surface of the connection between the lifting arm and the lifting hook, and the lifting hook can rotate at a certain angle relative to the lifting arm, thereby ensuring that the upper half of the lifting hook is in an open state, so as to ensure that the outer side surface of the lifting hook is tightly attached to the inner wall of the inner hole of the wheel, so as to further clamp the stacked wheels, and avoid the stacked wheels connected to the lifting hook from shaking when the lifting device is lifted, thereby affecting the stability of the lifting operation;

[0028] (4) A wheel inner circle lifting device and a lifting method thereof of the present invention, wherein the hook comprises a hook body, the hook body is vertically inclined at an angle to the horizontal plane, and the length of the hook body determines the number of wheels that can be lifted at one time;

[0029] (5) A wheel inner circle hoisting device and hoisting method of the present invention, wherein a sliding mechanism is provided on the outer side of the connection between the boom body and the hook body away from the rotating mechanism, and the sliding mechanism comprises a fixed block I and a fixed block II fixedly mounted on the outer sides of the boom body and the hook body, and the fixed block I and the fixed block II are slid up and down to drive the boom body and the hook body to rotate relative to each other with the pin shaft as the hinge point, and the relative rotation angle between the two is 1 to 3°;

[0030] (6) A wheel inner circle lifting device and a lifting method thereof of the present invention, wherein a bolt III is vertically and coaxially sleeved in the middle of the fixing block I and the fixing block II, and a disc spring is also sleeved on the bolt III. The disc spring is arranged between the bolt III and the fixing block I. When the downward force applied to the rod is removed, the elastic recovery of the disc spring is utilized to push the fixing block I to reset, thereby driving the boom body to reset, so as to facilitate the hook to be pulled out of the wheel after lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the lifting equipment of the present invention;

[0032] Figure 2 for Figure 1 A top view of

[0033] Figure 3 for Figure 1 Schematic diagram of the structure of the boom and hook connection state;

[0034] Figure 4 for Figure 3 A partial enlarged structural diagram of the boom and hook in FIG.

[0035] Figure 5 for Figure 4 The boom and hook are rotated to the maximum angle to show the status;

[0036] Figure 6 It is a structural schematic diagram of the wheels of the present invention with the boom retracted and the hook inserted into the stack;

[0037] Figure 7 It is a schematic diagram of the structure of the boom falling and the hook opening outwards of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the hook clamping wheel of the present invention;

[0039] Fig. 9 It is a schematic diagram of the structure in which the hook of the present invention is bent downward at a certain angle relative to the boom, and the boom is clamped with the inner hole of the wheel.

[0040] In the figure: 1- hanger; 11- hanger body; 12- extension arm; 121- fixing plate mounting hole; 2- fixing plate; 21- pin; 3- boom; 31- boom body; 32- fixing plate connecting hole; 33- connecting rod mounting hole; 4- hook; 41- hook body; 42- hook body; 5- rotating mechanism; 51- connecting block I; 511- bolt I; 52- connecting block II; 521- bolt II; 53- pin shaft; 6- sliding mechanism; 61- bolt III; 62- locking nut; 63- disc spring; 64- fixing block I; 65- fixing block II; 7- moving rod; 8- connecting rod; 9- motor; 91- motor mounting plate; 10- wheel; 101- wheel inner hole. DETAILED DESCRIPTION

[0041] In order to further understand the content of the present invention, the invention is described in detail with reference to the accompanying drawings.

[0042] Example 1

[0043] A wheel inner circle hoisting device of this embodiment, such as Figures 1-2 As shown, it includes a horizontally arranged hanger 1, and the hanger 1 includes a hanger body 11. A plurality of groups of extending arms 12 are evenly spaced outside the hanger body 11. A fixing plate mounting hole 121 is opened at the outer end of the extending arm 12. A fixing plate 2 is vertically mounted at the fixing plate mounting hole 121, and a suspension arm 3 is vertically mounted at the lower end of the fixing plate 2. The suspension arm is arranged in an inwardly retracted manner, and a hook 4 is vertically movably mounted at its lower end. The suspension arms 3 installed at equal intervals form a self-centering structure under the action of gravity, which can ensure that the hook 4 connected to its lower end is evenly stuck on the lower surface of the center hole of the wheel 10, and completely avoid the situation where eccentricity causes unstable lifting or even tipping.

[0044] like Figure 8 As shown, when hoisting the wheel 10, after the hook 4 is vertically inserted into the inner hole 101 of the wheel, the outer side surface of the hook 4 contacts the inner wall of the inner hole 101 of the wheel, as shown in part A in the figure. Under the action of gravity, the boom 3 is in an open state, and the hook body 41 connected to its lower end is also in an open state, and a gap is formed between the upper half of the hook body 41 and the inner wall of the inner hole 101 of the wheel; as shown in part B in the figure, the lower half of the hook body 41 contacts the inner wall of the inner hole 101 of the wheel, and is tightly attached to the inner wall of the inner hole 101 of the wheel to ensure the lifting stability, thereby facilitating the lifting of the stacked wheels 10; in order to adapt to wheels 10 of different specifications and sizes, the hoisting equipment is easy to adjust and has high working efficiency.

[0045] Example 2

[0046] The wheel inner circle hoisting equipment of this embodiment has the same basic structure as that of embodiment 1, except that: Figure 6 As shown, a moving rod 7 is also vertically installed in the middle of the hanger body 11 and is driven by an external motor 9. The motor 9 is installed above the hanger body 11 through a motor mounting plate 91; the moving rod 7 is arranged on the inner side of the boom 3, and the boom 3 and the moving rod 7 are movably connected by a connecting rod 8, which is driven by the motor 9 to drive the moving rod 7 to move upward, and then pull the connecting rod 8 upward, and the connecting rod 8 drives the boom 3 connected at its lower end to move upward and then tightens the hook 4 vertically movably installed at its lower end, so as to facilitate the hook 4 to be inserted into the inner hole 101 of the wheel with a smaller diameter.

[0047] like Figure 3 As shown, the boom 3 includes a boom body 31, which is an L-shaped structure, and the two outer ends of which are respectively provided with a fixing plate connection hole 32 and a connecting rod mounting hole 33. The fixing plate connection hole 32 is provided at one end of the lower L-shaped short arm for mounting the connecting rod 8; the connecting rod mounting hole 33 is provided at one end of the upper L-shaped long arm, and a pin 21 is inserted therein for connecting the fixing plate 2. The hook 4 includes a hook body 41, and the hook body 41 is vertically inclined at an angle to the horizontal plane; a hook body 42 is provided at the lower end of the hook body 41, and the hook 4 is in a state of tightening the upper part and releasing the lower part. After the hook 4 is inserted into the stacked wheels 10, the hook body 41 drives the hook body 42 to open outwards by gravity, so that the hook body 42 can be engaged on the bottom surface of the bottom wheel 10 after passing through the stacked wheels 10.

[0048] Example 3

[0049] The wheel inner circle hoisting equipment of this embodiment has the same basic structure as that of embodiment 2, except that: Figure 7 , 9As shown, a rotating mechanism 5 is provided on the inner side of the connection between the boom 3 and the hook 4, through which the hook 4 can rotate at a certain angle relative to the boom 3, as shown in FIG. Fig. 9 As shown in the middle C part, the upper part of the hook 4 is in an open state to ensure that the outer side surface of the hook 4 is tightly attached to the inner wall of the wheel inner hole 101, so as to further clamp the stacked wheels 10 and avoid the stacked wheels 10 connected to the hook 4 from shaking when the lifting equipment is lifted, thereby affecting the stability of the lifting operation.

[0050] like Figures 4-5 As shown, the rotating mechanism 5 includes a connecting block I51 and a connecting block II52. The connecting block I51 is installed on the inner side surface of the boom body 31 near one end of the fixing plate connecting hole 32 and is fixed by a bolt I511; the connecting block II52 is installed on the inner side surface of the hook body 41 and is fixed by a bolt II521. The connecting block I51 and the connecting block II52 are movably connected via a pin shaft 53. By relatively rotating the connecting block I51 and the connecting block II52, the boom body 31 and the hook body 41 are driven to rotate relative to each other, so as to further clamp the hook body 41 to the wheel 10.

[0051] Example 4

[0052] The wheel inner circle lifting equipment of this embodiment has the same basic structure as that of embodiment 3, except that: Figures 4-5 As shown, a sliding mechanism 6 is provided on the outer surface of the connection between the boom body 31 and the hook body 41 on the side away from the rotating mechanism 5; the sliding mechanism 6 includes a fixed block I64 and a fixed block II65 fixedly installed on the outer surfaces of the boom body 31 and the hook body 41, and a bolt III61 is vertically coaxially sleeved in the middle of the fixed block I64 and the fixed block II65, and the outer end of the bolt III61 is fastened by a locking nut 62. The fixed block I64 and the fixed block II65 are slid up and down to drive the boom body 31 and the hook body 41 to rotate relative to each other with the pin shaft 53 as the hinge point, and the relative rotation angle between the two is 1 to 3°.

[0053] A disc spring 63 is also sleeved on the bolt III61, and the disc spring 63 is arranged between the bolt III61 and the fixed block I64. When the downward force applied to the rod 8 is removed, the elastic recovery of the disc spring 63 is utilized to push the fixed block I64 to reset, thereby driving the boom body 31 to reset, so as to facilitate the hook 4 to be pulled out of the wheel 10 after lifting.

[0054] Example 5

[0055] The hoisting method of the inner circle hoisting equipment of the wheel of this embodiment has the same basic structure as that of the embodiment 4, and the difference and improvement are as follows: Figures 6 to 9As shown, the following steps are included:

[0056] Step 1: Lift the wheel inner circle lifting equipment: lift the wheel inner circle lifting equipment to the top of the stacked wheels 10 by lifting equipment, align the hook 4 with the wheel inner hole 101, and insert the hook 4 into the stacked wheels 10;

[0057] Step 2, unfold the hook 4: the hook 4 continues to be inserted downward into the wheel inner hole 101 until the hook body 42 passes through the lowermost wheel 10 and stops, the hook body 42 passes through the wheel inner hole 101 and is engaged with the lower surface of the lowermost wheel 10; under the action of gravity, the arm 3 is in an open state, and the hook body 41 connected to its lower end is also in an open state, a gap is formed between the upper half of the hook body 41 and the inner wall of the wheel inner hole 101, and the lower half of the hook body 41 is in contact with the inner wall of the wheel inner hole 101;

[0058] Step 3, tighten the hook 4: Continue to push the connecting rod 8 downward, thereby pushing the arm body 31 to drive the fixing block I64 to slide upward along the length direction of the bolt III61, and the hook body 41 connected at its lower end is acted upon by the force of the arm body 31, driving the fixing block II65 to slide downward along the length direction of the bolt III61, so that the hook body 41 is bent downward by 1 to 3 degrees relative to the arm body 31, thereby ensuring that the upper half of the hook body 41 is also in contact with the inner wall of the wheel inner hole 101;

[0059] Step 4: Lifting the stacked wheels 10 : Use a lifting device to lift the lifting device with the stacked wheels 10 to a required position to complete the lifting operation of the stacked wheels 10 .

[0060] Furthermore, in step one, for the inner hole 101 of the wheel with a small diameter, before inserting the hook 4 into the inner hole 101 of the wheel, start the motor 9, and drive the movable rod 7 to move upward through the motor 9, thereby pulling the connecting rod 8 upward, and the connecting rod 8 drives the boom 3 connected to its lower end to move upward, thereby tightening the hook 4 vertically movably installed at its lower end, and the hook 4 is in a tightened state to facilitate its insertion into the inner hole 101 of the wheel with a smaller diameter.

[0061] The present invention and its embodiments are described schematically above, and the description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by it and designs a structural method and an embodiment similar to the technical solution without creativity without departing from the purpose of the invention, they shall all fall within the protection scope of the present invention.

Claims

1. A wheel inner circle lifting device, characterized by: The invention comprises a horizontally arranged hanger (1), the hanger (1) comprising a hanger body (11), a plurality of groups of extending arms (12) being arranged at equal intervals on the periphery of the hanger body (11), a hanging arm (3) being vertically mounted on the outer end of the extending arm (12) via a fixing plate (2); the hanging arm is arranged in an inwardly retractable manner, and a hanging hook (4) is vertically movably mounted on the lower end thereof; A moving rod (7) is also vertically mounted in the middle of the hanger body (11) and driven by an external motor (9), wherein the motor (9) is mounted above the hanger body (11) via a motor mounting plate (91); the moving rod (7) is arranged on the inner side of the boom (3), and the boom (3) and the moving rod (7) are movably connected via a connecting rod (8); A rotating mechanism (5) is provided on the inner side surface of the connection between the suspension arm (3) and the suspension hook (4); The hook (4) comprises a hook body (41), the hook body (41) being arranged vertically and tilted at an angle to a horizontal plane; a hook body (42) is arranged at the lower end of the hook body (41); the hook (4) is in a state where the upper part is tightened and the lower part is released; The boom (3) comprises a boom body (31), the boom body (31) being an L-shaped structure, and having two outer ends respectively provided with a fixing plate connection hole (32) and a connecting rod mounting hole (33), the fixing plate connection hole (32) being used for mounting the connecting rod (8); a pin (21) being inserted into the connecting rod mounting hole (33) for connecting the fixing plate (2); The rotating mechanism (5) comprises a connecting block I (51) and a connecting block II (52), wherein the connecting block I (51) is mounted on the inner side surface of the boom body (31) near one end of the fixing plate connecting hole (32) and is fixed by a bolt I (511); the connecting block II (52) is mounted on the inner side surface of the hook body (41) and is fixed by a bolt II (521), and the connecting block I (51) and the connecting block II (52) are movably connected via a pin shaft (53).

2. The wheel inner circle lifting equipment according to claim 1, characterized in that: A sliding mechanism (6) is provided on the outer surface of the connection between the boom body (31) and the hook body (41) on the side away from the rotating mechanism (5); the sliding mechanism (6) comprises a fixing block I (64) and a fixing block II (65) fixedly mounted on the outer surfaces of the boom body (31) and the hook body (41); a bolt III (61) is vertically and coaxially sleeved in the middle of the fixing block I (64) and the fixing block II (65); the outer end of the bolt III (61) is fastened by a locking nut (62).

3. The wheel inner circle lifting equipment according to claim 2, characterized in that: The bolt III (61) is also sleeved with a disc spring (63), and the disc spring (63) is arranged between the bolt III (61) and the fixing block I (64).

4. A method for hoisting the inner circle hoisting device of a wheel according to claim 3, characterized in that: The steps include: Step 1, lifting the wheel inner circle lifting equipment: using the lifting equipment to lift the wheel inner circle lifting equipment above the stack of wheels (10), aligning the lifting hook (4) with the wheel inner hole (101), and inserting the lifting hook (4) into the stack of wheels (10); Step 2, unfolding the hook (4): the hook (4) continues to be inserted downward into the inner hole (101) of the wheel until the hook body (42) passes through the lowermost wheel (10) and stops, the hook body (42) passes through the inner hole (101) of the wheel and is engaged with the lower surface of the lowermost wheel (10); under the action of gravity, the arm (3) is in an open state, and the hook body (41) connected to the lower end thereof is also in an open state, a gap is formed between the upper half of the hook body (41) and the inner wall of the inner hole (101) of the wheel, and the lower half of the hook body (41) contacts the inner wall of the inner hole (101) of the wheel; Step 3, tightening the hook (4): Continue to push the connecting rod (8) downward, thereby pushing the arm body (31) to drive the fixing block I (64) to slide upward along the length direction of the bolt III (61), and the hook body (41) connected at its lower end is acted upon by the force of the arm body (31), driving (65) to slide downward along the length direction of the bolt III (61), so that the hook body (41) is bent downward by 1 to 3 degrees relative to the arm body (31), thereby ensuring that the upper half of the hook body (41) is also in contact with the inner wall of the wheel inner hole (101); Step 4: Lifting the stacked wheels (10): Use a lifting device to lift the lifting device with the stacked wheels (10) to a required position to complete the lifting operation of the stacked wheels (10).

5. The hoisting method according to claim 4, characterized in that: In step 1, for a wheel inner hole (101) with a small diameter, before inserting the hook (4) into the wheel inner hole (101), the motor (9) is driven to drive the moving rod (7) to move upward, thereby pulling the connecting rod (8) upward, and the connecting rod (8) drives the hanging arm (3) connected to its lower end to move upward, thereby tightening the hook (4) installed vertically and movably at its lower end, so as to facilitate its insertion into the wheel inner hole (101) with a smaller diameter.

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