A sling for the hub part of a bridge crane

Abstract

The present invention discloses a sling for a hub part of a bridge crane, which includes a first support. A number of clamping assemblies for clamping the hub part by surrounding it from the outer peripheral side and a supporting assembly for lifting the hub part from below are provided on the first support. A first driving mechanism for controlling the movement of the clamping assemblies and a second driving mechanism for controlling the movement of the supporting assembly are also provided on the first support. When in use, the sling for the hub part of the bridge crane of the present invention clamps the hub part by surrounding it from the outer peripheral side with a number of clamping assemblies, and the supporting assembly lifts the hub part from below. It has good centering performance, effectively avoids the occurrence of slipping accidents caused by the hub part tilting to one side under the action of gravity, and is safe and reliable in use; it has good adaptability to existing gantry cranes or electric hoists, is easy to operate, and the clamping and unloading of the hub part are semi-automatically completed by the first driving mechanism and the second driving mechanism, effectively reducing the amount of manual participation and greatly improving the hoisting and transfer efficiency of the hub part.

Description

Technical Field

[0001] The present invention relates to the technical field of auxiliary equipment for the processing of hub parts, and particularly relates to a lifting tool for hub parts of a bridge crane. Background Art

[0002] For the existing hub part assembly of a bridge crane, especially the hub part assembly of a heavy bridge crane, the weight is generally large. During hoisting, a wire rope and a steel hook lifting tool are used to hoist the hub parts. Such hoisting not only has difficulty in centering, but also, since the hanging points are not at the center of gravity of the parts, when the hub parts are lifted, the hub parts tilt to one side under the action of gravity, which is extremely easy to slip and injure people. Moreover, the inclined hoisting of the hub parts is not convenient for loading and unloading, which is neither safe nor efficient. The present invention aims to provide a lifting tool for hub parts of a bridge crane to solve the above problems. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects existing in the prior art and provide a lifting tool for hub parts of a bridge crane. When in use, a plurality of clamping assemblies clamp the hub parts by surrounding them from the outer peripheral side, and a supporting assembly lifts the hub parts from below. The centering is good, effectively avoiding the occurrence of slipping accidents caused by the hub parts tilting to one side under the action of gravity, and the use is safe and reliable; it has good adaptability to the existing gantry crane or electric hoist, the operation is simple, the clamping and unloading of the hub parts are semi-automatically completed by the first driving mechanism and the second driving mechanism, effectively reducing the amount of manual participation, and greatly improving the hoisting and transfer efficiency of the hub parts.

[0004] To achieve the above purpose, the technical solution of the present invention is to design a lifting tool for hub parts of a bridge crane, including a first support. A plurality of clamping assemblies for clamping the hub parts by surrounding them from the outer peripheral side and a supporting assembly for lifting the hub parts from below are provided on the first support. A first driving mechanism for controlling the action of the clamping assemblies and a second driving mechanism for controlling the action of the supporting assembly are also provided on the first support.

[0005] For the lifting tool for hub parts of a bridge crane of the present invention, when in use, a plurality of clamping assemblies clamp the hub parts by surrounding them from the outer peripheral side, and a supporting assembly lifts the hub parts from below. The centering is good, effectively avoiding the occurrence of slipping accidents caused by the hub parts tilting to one side under the action of gravity, and the use is safe and reliable; it has good adaptability to the existing gantry crane or electric hoist, the operation is simple, the clamping and unloading of the hub parts are semi-automatically completed by the first driving mechanism and the second driving mechanism, effectively reducing the amount of manual participation, and greatly improving the hoisting and transfer efficiency of the hub parts.

[0006] Preferably, the clamping assembly is a link structure, one end of the clamping assembly is hinged to the output end of the first driving mechanism, and the other end is provided with a chuck. The clamping assembly is designed as a link structure, which is ingenious and reasonable, ensuring the successful preparation and implementation of a sling for hub parts of a bridge crane according to the present invention.

[0007] A further preferred technical solution is that the first bracket includes a top plate, a bottom plate and a plurality of vertical rods. The plurality of vertical rods are fixedly arranged at intervals between the top plate and the bottom plate. The upper ends of the vertical rods are fixedly connected to the outer edge of the top plate, and the lower ends are fixedly connected to the outer edge of the bottom plate. The first bracket has a cavity structure surrounded by the top plate, the bottom plate and the plurality of vertical rods inside, and longitudinal open slots are formed between adjacent vertical rods. The first driving mechanism is fixedly arranged on the upper end surface of the bottom plate, and the second driving mechanism is fixedly arranged on the lower end surface of the bottom plate;

[0008] A plurality of horizontal support rods extending horizontally outward are fixedly arranged at intervals on the outer peripheral side of the bottom plate. The horizontal support rods correspond to the longitudinal open slots one by one. The clamping assembly includes a first expansion rod, a first pressing rod and a chuck. One end of the first expansion rod passes through the corresponding longitudinal open slot and is hinged to the first support block at the output end of the first driving mechanism, and the other end is hinged to the upper end of the first pressing rod. The chuck is hingedly installed on the inner side surface of the lower end of the first pressing rod. The upper end of the first pressing rod is also hinged to the free end of the corresponding horizontal support rod. The structures of the first bracket and the clamping assembly are designed simply and reasonably, further ensuring the successful preparation and implementation of the sling for hub parts of a bridge crane. Moreover, the longitudinal open slots on the first bracket and the clamping assembly can be symmetrically and uniformly arranged, thereby further improving the safety and stability of the sling for hub parts of a bridge crane during use.

[0009] A further preferred technical solution is that the number of the supporting components is equal to the number of the clamping components. The supporting components include a first push rod, a second push rod, a third push rod, a fourth push rod, a second expansion rod and a supporting head. The lower end of the first push rod is hinged to the second support block at the output end of the second driving mechanism, and the upper end is hinged to the middle part of the second push rod. The upper end of the second push rod is hinged to the lower end surface of the bottom plate, and the lower end is hinged to the lower end of the third push rod. The upper end of the third push rod is hinged to one end of the fourth push rod and slides in the horizontal guiding groove on the corresponding horizontal support rod. The other end of the fourth push rod is hinged to the upper end of the second expansion rod and slides in the longitudinal guiding groove on the corresponding first pressing rod. The upper end of the supporting head is hinged to the lower end of the second expansion rod, and the lower end is hinged to the outer side surface of the lower end of the first pressing rod. The second driving mechanism can control the supporting head to reciprocally turn over between the outside and the lower inner side of the chuck. The supporting component is essentially a link driving structure, and the supporting component is arranged depending on the clamping component, and some components can be shared with the clamping component, so as to ensure that the overall structure of the hoist for the hub parts of the bridge crane is simple, and the structural design is reasonable and the stability is good.

[0010] A further preferred technical solution is that the supporting head includes a "7"-shaped block, a horizontal plate and an inclined plate. One end of the horizontal plate is fixedly arranged in the middle of the outer side surface of the "7"-shaped block, and the other end is fixedly provided with the inclined plate extending downward and outward. The free end of the horizontal section of the "7"-shaped block is hinged to the lower end of the second expansion rod, and the free end of the vertical section of the "7"-shaped block is hinged to the outer side surface of the lower end of the first pressing rod. The structure of the supporting head is ingeniously and reasonably designed, has good adaptability to the lower end surface of the hub part, and can effectively avoid the chuck of the clamping component during operation, so as to ensure the smoothness of the operation of the hoist for the hub parts of the bridge crane.

[0011] A further preferred technical solution is that the supporting assembly includes a second bracket, a third bracket and a plurality of supporting claws. Both the second bracket and the third bracket have a cavity structure. The lower end of the second bracket is provided with a circumferential step extending inward. The upper end of the third bracket is provided with a circumferential eaves extending outward. The upper end of the third bracket is coaxially and movably inserted into the cavity of the second bracket. The circumferential eaves are lapped on the circumferential step. The second driving mechanism is located inside the cavity of the second bracket. A plurality of longitudinal guide grooves are circumferentially spaced on the third bracket. A plurality of pin shafts corresponding to the longitudinal guide grooves are fixedly provided at the lower end of the third bracket. The supporting claws have third guide grooves along the length direction. One end of the supporting claw penetrates through the longitudinal guide groove and is hinged to the second supporting block at the output end of the second driving mechanism. The pin shaft is movably inserted into the third guide groove of the corresponding supporting claw. The second driving mechanism can control the plurality of supporting claws to contract into the corresponding plurality of longitudinal guide grooves of the third bracket or horizontally extend to the lower end of the third bracket. The structure of the supporting assembly is ingenious and reasonable. And the supporting assembly extends into the hub part from the central hole of the hub part and supports the center position of the lower end face of the hub part, further improving the centering during the operation of the hoist for the hub part of the bridge crane, so as to ensure good stability and safety during the hoisting and transportation of the hub part.

[0012] A further preferred technical solution is that both the first driving mechanism and the second driving mechanism are hydraulic cylinders. The hydraulic cylinder has a simple structure, stable and reliable movement, and good power, which can meet the requirements of hoisting and transporting large-weight hub parts, and has high economic universality.

[0013] A further preferred technical solution is that the side of the chuck facing the hub part is provided with an arc concave surface structure, and anti-slip lines are provided on the arc concave surface structure. The friction between the chuck and the outer peripheral side surface of the hub part is increased. When using the hoist for the hub part of the bridge crane to hoist and transport the hub part of the bridge crane, the relative sliding between the chuck and the outer peripheral side surface of the hub part is effectively avoided, thereby improving the stability and safety during hoisting and transportation.

[0014] A further preferred technical solution is that a mounting seat penetrating the plate body is fixedly provided at the center position of the bottom plate, and both the first driving mechanism and the second driving mechanism are fixedly provided on the mounting seat. It improves the installation convenience and installation efficiency of the driving mechanism.

[0015] A further preferred technical solution is that a hoisting cylinder penetrating the plate body is fixedly provided at the center position of the top plate.

[0016] The advantages and beneficial effects of the present invention are as follows:

[0017] 1. A lifting tool for the hub parts of a bridge crane according to the present invention, when in use, a plurality of clamping assemblies surround and clamp the hub parts from the outer peripheral side, and the supporting assembly lifts the hub parts from below. It has good centering performance, effectively avoiding the occurrence of slipping accidents caused by the inclination of the hub parts to one side under the action of gravity, and is safe and reliable in use; it has good adaptability to existing gantry cranes or electric hoists, is easy to operate, and the clamping and unloading of the hub parts are semi-automatically completed by the first driving mechanism and the second driving mechanism, effectively reducing the amount of manual participation and greatly improving the lifting and transfer efficiency of the hub parts.

[0018] 2. A lifting tool for the hub parts of a bridge crane according to the present invention, the structure of the first bracket and the clamping assembly is designed simply and reasonably, further ensuring the smooth preparation and implementation of the lifting tool for the hub parts of the bridge crane, and the longitudinal opening grooves and the clamping assemblies on the first bracket can be symmetrically and evenly arranged, thereby further improving the safety and stability of the lifting tool for the hub parts of the bridge crane during use.

[0019] 3. A lifting tool for the hub parts of a bridge crane according to the present invention, the supporting head includes a "7"-shaped block, a horizontal plate and an inclined plate, the structure is designed ingeniously and reasonably, has good adaptability to the lower end face of the hub part, and can effectively avoid the clamping head of the clamping assembly during operation, ensuring the smoothness of the operation of the lifting tool for the hub parts of the bridge crane.

[0020] 4. A lifting tool for the hub parts of a bridge crane according to the present invention, the structure of the supporting assembly in the second solution is designed ingeniously and reasonably, and the supporting assembly extends into the lower part of the hub part from the central hole of the hub part and supports the central position of the lower end face of the hub part, further improving the centering performance during the operation of the lifting tool for the hub parts of the bridge crane, thereby ensuring good stability and safety when lifting and transferring the hub parts.

[0021] 5. Both the first driving mechanism and the second driving mechanism are hydraulic cylinders. The hydraulic cylinder has a simple structure, stable and reliable movement, good power, can meet the requirements of lifting and transferring large-weight hub parts, and has high economic universality.

[0022] 6. The side of the clamping head facing the hub part is provided with an arc concave surface structure, and anti-slip lines are provided on the arc concave surface structure. The friction between the clamping head and the outer peripheral side of the hub part is increased. When using this lifting tool for the hub parts of the bridge crane to lift and transfer the hub parts of the bridge crane, the relative sliding between the clamping head and the outer peripheral side of the hub part is effectively avoided, thereby improving the stability and safety during lifting and transfer. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the lifting tool for the hub parts of the bridge crane in Embodiment 1;

[0024] Figure 21 is a schematic diagram of the three-dimensional structure of the hub parts hanger of the bridge crane in Example 1 (some parts are hidden);

[0025] Figure 3 It is one of the use state diagrams of the bridge crane hub parts lifting device in Example 1;

[0026] Figure 4 This is the second use state diagram of the bridge crane hub parts lifting device in Example 1;

[0027] Figure 5 is a top-down perspective three-dimensional structural diagram of a hub parts hanger for a bridge crane in Example 2;

[0028] Figure 6 is a schematic diagram of the longitudinal cross-sectional structure of the hub parts hanger of the bridge crane in Example 2;

[0029] Figure 7 yes Figure 6 A partial enlarged view of the H in the middle;

[0030] Figure 8 Schematic diagram of the three-dimensional structure of the hub parts of the bridge crane in Example 2 from an upward perspective

[0031] Figure 9 yes Figure 8 A partial enlarged view of the middle W;

[0032] Figure 10 It is one of the use state diagrams of the hub parts lifting device of the bridge crane in Example 2;

[0033] Figure 11 This is the second usage status diagram of the bridge crane hub parts lifting device in Example 2.

[0034] In the figure: 1, first bracket; 2, clamping assembly; 3, supporting assembly; 4, first driving mechanism; 5, second driving mechanism; 6, mounting seat; 7, second bracket; 8, third bracket; 9, supporting claw; 10, hub part; 1-1, top plate; 1-1-1, lifting tube; 1-2, bottom plate; 1-3, vertical rod; 1-4, horizontal support rod; 1-4-1, horizontal guide groove; 1-5, longitudinal opening groove; 2-1, first expansion rod; 2-2, first pressure rod; 2-2-1, Longitudinal guide groove; 2-3, chuck; 3-1, first push rod; 3-2, second push rod; 3-3, third push rod; 3-4, fourth push rod; 3-5, second expansion rod; 3-6, supporting head; 3-6-1, "7"-shaped block; 3-6-2, horizontal plate; 3-6-3, inclined plate; 4-1, first support block; 5-1, second support block; 7-1, annular step; 8-1, annular eaves; 8-2, longitudinal guide groove; 8-3, pin shaft; 9-1, third guide groove. DETAILED DESCRIPTION

[0035] The following will further describe the specific implementation manners of the present invention in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, and cannot be used to limit the protection scope of the present invention.

[0036] Embodiment 1

[0037] As Figures 1 to 4 shown, the present invention is a lifting tool for a hub part of a bridge crane, including a first bracket 1. A plurality of clamping assemblies 2 for clamping the hub part 10 from the outer peripheral side and a supporting assembly 3 for lifting the hub part 10 from below are provided on the first bracket 1. A first driving mechanism 4 for controlling the movement of the clamping assembly 2 and a second driving mechanism 5 for controlling the movement of the supporting assembly 3 are also provided on the first bracket 1.

[0038] Preferably, the clamping assembly 2 is a link structure. One end of the clamping assembly 2 is hinged to the output end of the first driving mechanism 4, and a chuck 2-3 is provided at the other end.

[0039] Further preferably, the first bracket 1 includes a top plate 1-1, a bottom plate 1-2 and a plurality of vertical rods 1-3. The plurality of vertical rods 1-3 are fixedly arranged at intervals between the top plate 1-1 and the bottom plate 1-2. The upper ends of the vertical rods 1-3 are fixedly connected to the outer edge of the top plate 1-1, and the lower ends are fixedly connected to the outer edge of the bottom plate 1-2. A cavity structure surrounded by the top plate 1-1, the bottom plate 1-2 and the plurality of vertical rods 1-3 is formed inside the first bracket 1, and a longitudinal opening groove 1-5 is formed between adjacent vertical rods 1-3. The first driving mechanism 4 is fixedly arranged on the upper end surface of the bottom plate 1-2, and the second driving mechanism 5 is fixedly arranged on the lower end surface of the bottom plate 1-2;

[0040] A plurality of horizontal support rods 1-4 extending horizontally outward are fixedly arranged at intervals on the outer peripheral side of the bottom plate 1-2. The horizontal support rods 1-4 correspond to the longitudinal opening grooves 1-5 one by one. The clamping assembly 2 includes a first expansion rod 2-1, a first pressing rod 2-2 and a chuck 2-3. One end of the first expansion rod 2-1 passes through the corresponding longitudinal opening groove 1-5 and is hinged to a first support block 4-1 at the output end of the first driving mechanism 4, and the other end is hinged to the upper end of the first pressing rod 2-2. The chuck 2-3 is hingedly installed on the inner side of the lower end of the first pressing rod 2-2. The upper end of the first pressing rod 2-2 is also hinged to the free end of the corresponding horizontal support rod 1-4.

[0041] Further preferably, the number of the supporting components 3 is equal to that of the clamping components 2. The supporting component 3 includes a first push rod 3-1, a second push rod 3-2, a third push rod 3-3, a fourth push rod 3-4, a second expansion rod 3-5 and a supporting head 3-6. The lower end of the first push rod 3-1 is hinged to the second support block 5-1 at the output end of the second driving mechanism 5, and the upper end is hinged to the middle part of the second push rod 3-2. The upper end of the second push rod 3-2 is hinged to the lower end face of the bottom plate 1-2, and the lower end is hinged to the lower end of the third push rod 3-3. The upper end of the third push rod 3-3 is hinged to one end of the fourth push rod 3-4 and slides in the horizontal guiding groove 1-4-1 on the corresponding horizontal support rod 1-4. The other end of the fourth push rod 3-4 is hinged to the upper end of the second expansion rod 3-5 and slides in the longitudinal guiding groove 2-2-1 on the corresponding first pressing rod 2-2. The upper end of the supporting head 3-6 is hinged to the lower end of the second expansion rod 3-5, and the lower end is hinged to the outer side of the lower end of the first pressing rod 2-2. The second driving mechanism 5 can control the supporting head 3-6 to reciprocally turn over outside and inside below the chuck 2-3.

[0042] Further preferably, the supporting head 3-6 includes a "7"-shaped block 3-6-1, a horizontal plate 3-6-2 and an inclined plate 3-6-3. One end of the horizontal plate 3-6-2 is fixedly arranged in the middle of the outer side of the "7"-shaped block 3-6-1, and the other end is fixedly provided with the inclined plate 3-6-3 extending downward and outward. The free end of the horizontal section of the "7"-shaped block 3-6-1 is hinged to the lower end of the second expansion rod 3-5, and the free end of the vertical section of the "7"-shaped block 3-6-1 is hinged to the outer side of the lower end of the first pressing rod 2-2.

[0043] Further preferably, both the first driving mechanism 4 and the second driving mechanism 5 are hydraulic cylinders.

[0044] Further preferably, the side of the chuck 2-3 facing the hub part 10 is set as an arc concave surface structure, and anti-slip lines are arranged on the arc concave surface structure.

[0045] Further preferably, a mounting seat 6 penetrating the plate body is fixedly arranged at the central position of the bottom plate 1-2, and both the first driving mechanism 4 and the second driving mechanism 5 are fixedly arranged on the mounting seat 6.

[0046] Further preferably, a hoisting cylinder 1-1-1 penetrating the plate body is fixedly arranged at the central position of the top plate 1-1.

[0047] The working principle of a lifting tool for a bridge crane hub part in Embodiment 1:

[0048] Step 1: Use a wire rope to fixedly connect the hoisting cylinder 1-1-1 on the lifting tool for the bridge crane hub part with the hook on the electric hoist, and control the electric hoist to move the lifting tool for the bridge crane hub part directly above the hub part 10 to be lifted, so that the hub part 10 is kept in a horizontal placement state;

[0049] Step 2: When the lifting tool for the bridge crane hub part is in the initial state, both the first driving mechanism 4 and the second driving mechanism 5 are in the contracted state, that is, the chucks 2-3 and the supporting heads 3-6 are both in the closed state. Control the pistons of the first driving mechanism 4 and the second driving mechanism 5 to gradually extend to the extended state through the control system, that is, the chucks 2-3 and the supporting heads 3-6 are both in the open state, and then control the lifting tool for the bridge crane hub part to move downward until the chucks 2-3 move to the lower end of the outer peripheral side of the hub part 10;

[0050] Step 3: Control the piston of the first driving mechanism 4 to gradually contract through the control system, and drive the chucks 2-3 to gradually close through the first expansion rod 2-1 and the first pressure rod 2-2 until the chucks 2-3 on several clamping assemblies embrace and clamp the outer peripheral side of the hub part 10 and reach a certain pressure value, and the first driving mechanism 4 stops moving; Control the lifting tool for the bridge crane hub part to move upward a certain distance through the control system, control the piston of the second driving mechanism 5 to gradually contract through the control system, and drive the supporting head 3-6 to move downward and turn to the lower part of the hub part 10 through the first push rod 3-1, the second push rod 3-2, the third push rod 3-3, the fourth push rod 3-4, and the second expansion rod 3-5 until a certain pressure value is reached between the supporting head 3-6 and the lower end surface of the hub part 10, and the second driving mechanism 5 stops moving;

[0051] Step 4: Lift the lifting tool for the bridge crane hub part to a certain height by the electric hoist and transport it to the designated position, control the electric hoist to move the lifting tool for the bridge crane hub part downward and keep a certain distance from the placement table, control the piston of the second driving mechanism 5 to gradually extend through the control system, and drive the supporting head 3-6 to move downward and turn to the outside of the hub part 10 through the first push rod 3-1, the second push rod 3-2, the third push rod 3-3, the fourth push rod 3-4, and the second expansion rod 3-5 to make the supporting head 3-6 in the open state; Then control the lifting tool for the bridge crane hub part to move downward until the hub part 10 is placed on the table, control the piston of the first driving mechanism 4 to gradually extend through the control system, and drive the chucks 2-3 to gradually open through the first expansion rod 2-1 and the first pressure rod 2-2, lift the lifting tool for the bridge crane hub part to a certain height by the electric hoist, and make the first driving mechanism 4 and the second driving mechanism 5 contract and reset through the control system to complete the lifting and transportation of the hub part 10.

[0052] Embodiment 2

[0053] As Figures 5 to 11 shown, the present invention is a sling for a wheel hub part of a bridge crane. The difference from the sling for the wheel hub part of the bridge crane in Embodiment 1 is that the supporting assembly 3 includes a second bracket 7, a third bracket 8 and a plurality of supporting claws 9. Both the second bracket 7 and the third bracket 8 have a cavity structure. The lower end of the second bracket 7 is provided with a circumferential step 7-1 extending inward. The upper end of the third bracket 8 is provided with a circumferential eaves 8-1 extending outward. The upper end of the third bracket 8 is coaxially and movably inserted into the cavity of the second bracket 7. The circumferential eaves 8-1 is lapped on the circumferential step 7-1. The second driving mechanism 5 is located inside the cavity of the second bracket 7. A plurality of longitudinal guide grooves 8-2 are circumferentially spaced on the third bracket 8. A plurality of pin shafts 8-3 corresponding one by one are fixedly arranged at the lower end of the third bracket 8 inside the longitudinal guide grooves 8-2. The supporting claw 9 has a third guide groove 9-1 along the length direction. One end of the supporting claw 9 penetrates through the longitudinal guide groove 8-2 and is hinged to the second support block 5-1 at the output end of the second driving mechanism 5. The pin shaft 8-3 is movably inserted into the third guide groove 9-1 of the corresponding supporting claw 9. The second driving mechanism 5 can control the plurality of supporting claws 9 to contract into the corresponding plurality of longitudinal guide grooves 8-2 of the third bracket 8 or horizontally extend to the lower end of the third bracket 8.

[0054] The working principle of a sling for a wheel hub part of a bridge crane in Embodiment 2:

[0055] Step 1: Use a steel wire rope to fixedly connect the hoisting cylinder 1-1-1 on the sling for the wheel hub part of the bridge crane with the hook on the electric hoist. Control the electric hoist to move the sling for the wheel hub part of the bridge crane to directly above the wheel hub part 10 to be hoisted, so that the wheel hub part 10 is kept in a horizontal placement state;

[0056] Step 2: When the sling for the wheel hub part of the bridge crane is in the initial state, both the first driving mechanism 4 and the second driving mechanism 5 are in the contracted state, that is, the chucks 2-3 are all in the closed state, the upper end of the third bracket 8 contracts into the second bracket 7, and the supporting claws 9 contract into the longitudinal guide grooves 8-1 of the third bracket 8. Control the piston rod of the first driving mechanism 4 to gradually extend to the extended state through the control system, that is, the chucks 2-3 are in the open state, and then control the sling for the wheel hub part of the bridge crane to move downward until the chucks 2-3 move to the lower end of the outer peripheral side of the wheel hub part 10;

[0057] Step 3: Control the piston rod of the first driving mechanism 4 to gradually contract through the control system, and drive the chuck 2-3 to gradually close through the first expansion rod 2-1 and the first pressing rod 2-2 until the chucks 2-3 on several clamping components embrace and clamp the outer peripheral side of the hub part 10 and reach a certain pressure value, and the first driving mechanism 4 stops moving; control the overhead crane hub part lifting device to move upward a certain distance through the control system, control the piston rod of the second driving mechanism 5 to gradually extend through the control system, and drive the third support 8 to move downward until the lower end penetrates the central hole of the hub part 10, and the supporting claw 9 extends horizontally below the hub part 10, and the second driving mechanism 5 stops moving;

[0058] Step 4: Lift the overhead crane hub part lifting device to a certain height by the electric hoist and transport it to the designated position, control the electric hoist to move the overhead crane hub part lifting device downward and keep a certain distance from the placement tabletop, control the piston rod of the second driving mechanism 5 to gradually contract through the control system, and drive the supporting claw 9 and the third support 8 to contract and reset; then control the overhead crane hub part lifting device to move downward until the hub part 10 is placed on the tabletop, control the piston rod of the first driving mechanism 4 to gradually extend through the control system, and drive the chuck 2-3 to gradually open through the first expansion rod 2-1 and the first pressing rod 2-2, lift the overhead crane hub part lifting device to a certain height by the electric hoist, and then make the first driving mechanism 4 contract and reset through the control system to complete the hoisting and transportation of the hub part 10.

[0059] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A sling for a hub part of a bridge crane, characterized in that It includes a first bracket (1), on which there are a number of clamping components (2) for clamping the hub part (10) by surrounding it from the outer peripheral side and a supporting component (3) for lifting the hub part (10) from below. There is also a first driving mechanism (4) for controlling the action of the clamping component (2) and a second driving mechanism (5) for controlling the action of the supporting component (3) on the first bracket (1); The first bracket (1) includes a top plate (1-1), a bottom plate (1-2) and a number of vertical rods (1-3). A number of horizontal support rods (1-4) extending horizontally towards the outer peripheral side are fixedly arranged at intervals on the outer peripheral side of the bottom plate (1-2). The clamping component (2) includes a first expansion rod (2-1), a first pressing rod (2-2) and a chuck (2-3). The chuck (2-3) is hingedly installed on the inner side of the lower end of the first pressing rod (2-2), and the upper end of the first pressing rod (2-2) is also hingedly connected to the free end of the corresponding horizontal support rod (1-4); The number of the supporting components (3) is equal to that of the clamping components (2). The supporting component (3) includes a first push rod (3-1), a second push rod (3-2), a third push rod (3-3), a fourth push rod (3-4), a second expansion rod (3-5) and a supporting head (3-6). The lower end of the first push rod (3-1) is hinged to the second support block (5-1) at the output end of the second driving mechanism (5), and the upper end is hingedly connected to the middle of the second push rod (3-2). The upper end of the second push rod (3-2) is hinged to the lower end face of the bottom plate (1-2), and the lower end is hingedly connected to the lower end of the third push rod (3-3). The upper end of the third push rod (3-3) is hingedly connected to one end of the fourth push rod (3-4) and slides in a horizontal guide groove (1-4-1) on the corresponding horizontal support rod (1-4). The other end of the fourth push rod (3-4) is hingedly connected to the upper end of the second expansion rod (3-5) and slides in a longitudinal guide groove (2-2-1) on the corresponding first pressing rod (2-2). The upper end of the supporting head (3-6) is hinged to the lower end of the second expansion rod (3-5), and the lower end is hingedly connected to the outer side of the lower end of the first pressing rod (2-2). The second driving mechanism (5) can control the supporting head (3-6) to reciprocally flip and move outside and inside below the chuck (2-3).

2. A sling for a hub part of a bridge crane, characterized in that, It includes a first bracket (1), on which there are a number of clamping components (2) for clamping the hub part (10) by surrounding it from the outer peripheral side and a supporting component (3) for lifting the hub part (10) from below. There is also a first driving mechanism (4) for controlling the action of the clamping component (2) and a second driving mechanism (5) for controlling the action of the supporting component (3) on the first bracket (1); The described first bracket (1) includes a top plate (1-1), a bottom plate (1-2), and several vertical rods (1-3). The outer peripheral side of the bottom plate (1-2) is fixedly provided with several horizontal support rods (1-4) extending horizontally towards the outer peripheral side at intervals. The clamping assembly (2) includes a first expansion rod (2-1), a first pressing rod (2-2), and a chuck (2-3). The chuck (2-3) is hingedly installed on the inner side of the lower end of the first pressing rod (2-2). The upper end of the first pressing rod (2-2) is also hingedly connected to the free end of the corresponding horizontal support rod (1-4); The described supporting assembly (3) includes a second bracket (7), a third bracket (8), and several support claws (9). Both the second bracket (7) and the third bracket (8) have a cavity structure. The lower end of the second bracket (7) is provided with a circumferential step (7-1) extending towards the inside. The upper end of the third bracket (8) is provided with a circumferential eaves (8-1) extending towards the outside. The upper end of the third bracket (8) is coaxially and movably inserted into the cavity of the second bracket (7). The circumferential eaves (8-1) overlap on the circumferential step (7-1). The second driving mechanism (5) is located inside the cavity of the second bracket (7). A plurality of longitudinal guide grooves (8-2) are circumferentially spaced on the third bracket (8). The lower end of the third bracket (8) is fixedly provided with several pins (8-3) corresponding to and located inside the longitudinal guide grooves (8-2). The support claw (9) has a third guide groove (9-1) along the length direction. One end of the support claw (9) passes through the longitudinal guide groove (8-2) and is hingedly connected to the second support block (5-1) at the output end of the second driving mechanism (5). The pin (8-3) is movably inserted into the third guide groove (9-1) of the corresponding support claw (9). The second driving mechanism (5) can control several support claws (9) to contract into the corresponding longitudinal guide grooves (8-2) of the third bracket (8) or horizontally extend to the lower end of the third bracket (8).

3. The spreader for the hub part of the bridge crane according to claim 1 or 2, characterized in that, The clamping assembly (2) is a link structure. One end of the clamping assembly (2) is hingedly connected to the output end of the first driving mechanism (4), and the other end is provided with a chuck (2-3).

4. The spreader for the hub part of the overhead crane according to claim 1 or 2, characterized in that, Several vertical rods (1-3) are fixedly arranged at intervals between the top plate (1-1) and the bottom plate (1-2). The upper end of the vertical rod (1-3) is fixedly connected to the outer edge of the top plate (1-1), and the lower end is fixedly connected to the outer edge of the bottom plate (1-2). The first bracket (1) has a cavity structure formed by the top plate (1-1), the bottom plate (1-2), and several vertical rods (1-3) inside. And a longitudinal opening groove (1-5) is formed between adjacent vertical rods (1-3). The first driving mechanism (4) is fixedly arranged on the upper end face of the bottom plate (1-2), and the second driving mechanism (5) is fixedly arranged on the lower end face of the bottom plate (1-2); The horizontal support rods (1-4) correspond to the longitudinal opening grooves (1-5) one by one. One end of the first expansion rod (2-1) passes through the corresponding longitudinal opening groove (1-5) and is hinged to the first support block (4-1) at the output end of the first driving mechanism (4), and the other end is hinged to the upper end of the first pressing rod (2-2).

5. The spreader for the hub part of the bridge crane according to claim 1, characterized in that, The supporting head (3-6) includes a "7"-shaped block (3-6-1), a horizontal plate (3-6-2) and an inclined plate (3-6-3). One end of the horizontal plate (3-6-2) is fixedly arranged in the middle of the outer side surface of the "7"-shaped block (3-6-1), and the other end is fixedly provided with the inclined plate (3-6-3) extending downward and outward. The free end of the horizontal section of the "7"-shaped block (3-6-1) is hinged to the lower end of the second expansion rod (3-5), and the free end of the vertical section of the "7"-shaped block (3-6-1) is hinged to the outer side surface of the lower end of the first pressing rod (2-2).

6. The spreader for the hub part of the overhead crane according to claim 1 or 2, characterized in that Both the first driving mechanism (4) and the second driving mechanism (5) are hydraulic cylinders.

7. The spreader for the hub part of the overhead crane according to claim 1 or 2, characterized in that, The side of the chuck (2-3) facing the hub part (10) is provided with an arc-shaped concave surface structure, and anti-slip lines are arranged on the arc-shaped concave surface structure.

8. The spreader for the hub part of the bridge crane according to claim 1 or 2, characterized in that, A mounting seat (6) penetrating the plate body is fixedly arranged at the center position of the bottom plate (1-2), and both the first driving mechanism (4) and the second driving mechanism (5) are fixedly arranged on the mounting seat (6).

9. The spreader for the hub part of the overhead crane according to claim 1 or 2, characterized in that, A hoisting cylinder (1-1-1) penetrating the plate body is fixedly arranged at the center position of the top plate (1-1).

Images