Universal lifting appliance

Abstract

The invention relates to the technical field of lifting equipment, and discloses a universal lifting appliance which comprises a supporting seat, a plurality of lifting rods and a driving unit, and the upper end of the supporting seat is used for being connected with the lifting equipment; the multiple lifting rods are evenly distributed in the circumferential direction of the supporting base and can move away from or towards the supporting base. The driving unit is arranged to be capable of driving the multiple lifting rods to move away from the supporting base so as to be tightly attached to the hole wall of the through hole and can drive the multiple lifting rods to move towards the supporting base so as to leave the hole wall of the through hole. According to the lifting device, the driving unit can correspondingly drive the multiple lifting rods to move away from the supporting base by a distance according to the size of the through hole of the to-be-lifted component, and finally the lifting rods are tightly attached to the hole wall of the through hole, so that the to-be-lifted component is clamped and fixed. The universal lifting appliance provided by the invention can simultaneously meet the lifting requirements of components with different specifications (through holes with different sizes), so that the lifting appliance does not need to be replaced when a product is remodeled, and the cost of lifting equipment is saved.

Description

Technical Field

[0001] The invention relates to the technical field of hoisting equipment, and in particular to a universal hoisting device. Background Art

[0002] During assembly line operations, there is often a need to hoist large-hole components, such as engine flywheel housings and shock absorbers. Such components have no other reasonable hoisting positions except for the central through hole, and the central through holes of different specifications of the same type of components also vary in size, making it difficult for traditional hoists to be compatible. The existing technology has the problems of high cost, cumbersome switching of product lines, and easy confusion during use when equipping multiple components of the same type and different specifications with hoists. Summary of the invention

[0003] The purpose of the present invention is to overcome the problem that traditional slings cannot simultaneously meet the lifting requirements of components with through holes of different sizes, and to provide a universal sling that can meet the lifting requirements of components with through holes of different sizes. The universal sling does not need to be replaced when the product is changed, thereby saving the cost of lifting equipment.

[0004] In order to achieve the above object, the present invention provides a universal lifting device for lifting a component with a through hole, the universal lifting device comprising:

[0005] A support seat, the upper end of which is used to connect a lifting device;

[0006] A plurality of lifting rods, the plurality of lifting rods being evenly distributed in a circumferential direction of the support seat and being configured to be able to move away from or toward the support seat; and

[0007] A driving unit is configured to drive the plurality of lifting rods to move away from the support seat to be close to the hole wall of the through hole, and to drive the plurality of lifting rods to move toward the support seat to leave the hole wall of the through hole.

[0008] Optionally, the support seat has a suspension shaft extending upward in a vertical direction, and the driving unit includes:

[0009] A slider, the slider is sleeved on the suspension shaft and can move up and down along the axial length direction of the suspension shaft;

[0010] A plurality of first connecting arms, wherein the upper ends of the plurality of first connecting arms are respectively hinged on the sliding blocks, and the lower ends of the plurality of first connecting arms are hingedly connected with the upper ends of the plurality of lifting rods in a one-to-one correspondence;

[0011] a plurality of second connecting arms, one ends of the plurality of second connecting arms are respectively hinged on the support seat, and the other ends of the plurality of second connecting arms are hingedly connected to the plurality of lifting rods one by one; and

[0012] A driving unit is used to drive the sliding block to move up and down, so as to push and pull the lifting rods away from or toward the supporting seat through the first connecting arms.

[0013] Optionally, two second connecting arms are provided on each lifting rod, and the two second connecting arms are spaced apart along the length direction of the lifting rod.

[0014] Optionally, the driving unit includes:

[0015] A positioning block, wherein the positioning block is fixed on the suspension shaft above the sliding block;

[0016] a handle assembly, the handle assembly comprising a handle seat rotatably connected to the positioning block and a handle connected to the handle seat and extending outward; and

[0017] The third connecting arm has two ends respectively hinged to the handle seat and the slider, so that when the handle seat rotates around a rotation axis extending in a horizontal direction, the slider is driven to move up and down through the third connecting arm.

[0018] Optionally, a compression spring is provided between the positioning block and the sliding block, and the compression spring is configured to drive the sliding block downward and away from the positioning block.

[0019] Optionally, the handle has a blind cavity extending along its length direction and opening toward the handle seat, a latch rod is arranged in the blind cavity, a lever is arranged on the latch rod and extends out of the blind cavity in the radial direction of the handle, and a spring is arranged between the inner end of the latch rod and the bottom of the blind cavity;

[0020] The spring is used to drive the latch rod to extend out of the blind cavity and form a limiting fit with the upper end surface of the positioning block, and the shifting rod is used to shift the latch rod to retract it into the blind cavity, so as to release the limiting position between the latch rod and the positioning block and enable the handle seat to rotate around a rotation axis extending in the horizontal direction.

[0021] Optionally, the universal sling further comprises a leveling unit, the leveling unit comprising a connecting rod and an adjusting rod; one end of the connecting rod is connected to the support seat, and the other end extends outward in the horizontal direction; the adjusting rod is arranged at the suspended end of the connecting rod and extends in the vertical direction, and the adjusting rod is arranged to be movable in the vertical direction for adjusting the distance between the suspended end of the connecting rod and the upper surface of the component; and / or

[0022] The universal sling further comprises a guide unit arranged at the bottom of the support seat, the guide unit comprising a lower pad, an auxiliary guide block and a guide cone arranged in sequence from outside to inside, a plurality of the lower pad and the auxiliary guide block are respectively provided, the plurality of the lower pad and the plurality of the auxiliary guide blocks are respectively arranged at intervals along the circumference of the support seat, and the guide cone is arranged as an inverted frustum or cone and is arranged at the bottom center of the support seat; and / or

[0023] The universal sling also includes a protection unit, which includes a cylindrical shell mounted on the support seat, an upper cover plate arranged at the upper end of the cylindrical shell, and a lower cover plate arranged at the lower end of the cylindrical shell; the support seat is fixed on the lower cover plate, and a plurality of through holes are arranged on the lower cover plate, and the plurality of through holes correspond one by one to the plurality of lifting rods.

[0024] Optionally, a horizontal handle is provided outside the protection unit.

[0025] Optionally, a lifting plate is provided at the bottom of each lifting rod, and the lifting plate is arranged to extend horizontally in a direction away from the support seat.

[0026] Optionally, a lifting unit is provided at the upper end of the support seat for connecting a lifting device, and the lifting unit includes a hanging plate arranged above the support seat and a main lifting ring arranged above the hanging plate, at least one lifting chain is arranged between the main lifting ring and the hanging plate, and at least one secondary protective chain is arranged between the main lifting ring and the protective unit.

[0027] In the technical solution provided by the present invention, a plurality of lifting rods are evenly distributed on the circumference of the support seat, and the plurality of lifting rods can move away from or toward the support seat. When used in practice, the universal sling provided by the present invention is placed from top to bottom into the through hole of the component to be hoisted, and the driving unit drives the plurality of lifting rods to move away from the support seat to fit closely to the hole wall of the through hole, thereby clamping and fixing the component to be hoisted so that it can be lifted and moved. After the hoisting is in place, the driving unit drives the plurality of lifting rods to move toward the support seat to leave the hole wall of the through hole, thereby realizing the separation of the universal sling from the component.

[0028] In the present invention, the driving unit can drive the multiple lifting rods to move away from the support seat according to the size of the through hole of the component to be hoisted, and finally close to the hole wall of the through hole to achieve the clamping and fixing of the component to be hoisted. That is, the universal sling provided by the present invention can simultaneously meet the hoisting requirements of components of different specifications (with different through hole sizes), so that there is no need to replace the sling when the product is changed, thereby saving the cost of the hoisting equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a universal sling provided by the present invention;

[0030] Figure 2 yes Figure 1 Schematic diagram of the structure of the general-purpose spreader when the cylindrical shell is omitted;

[0031] Figure 3 It is a structural schematic diagram of a driving unit provided by the present invention;

[0032] Figure 4 It is a schematic diagram of the principle of the lifting rod moving away from the supporting seat in the present invention;

[0033] Figure 5 It is a structural schematic diagram of a handle assembly provided by the present invention.

[0034] Description of Reference Numerals

[0035] 100, support seat; 110, hanging shaft; 120, positioning block; 200, lifting unit; 210, hanging plate; 211, auxiliary lifting ring; 220, main lifting ring; 230, lifting chain; 240, secondary protection chain; 250, locking nut; 300, lifting rod; 310, lifting plate; 400, driving unit; 410, sliding block; 420, first connecting arm; 430, second connecting arm; 440, handle seat; 450, handle; 451, latch rod; 452, lever; 453, spring; 460, third connecting arm; 470, compression spring; 500, leveling unit; 510, connecting rod; 520, adjusting rod; 530, connecting block; 531, knob plunger; 540, nylon head; 541, adjusting nut; 600, guide unit; 610, lower pad; 620, auxiliary guide block; 630, guide cone; 700, protection unit; 710, cylindrical shell; 711, opening; 720, upper cover plate; 730, lower cover plate; 731, through hole; 732, fixing seat; 740, horizontal handle; 750, L-shaped connector; 751, sleeve; 752, connecting plate. DETAILED DESCRIPTION

[0036] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0037] The invention provides a universal lifting tool, which can simultaneously meet the lifting requirements of components with through holes of different sizes.

[0038] See also Figure 1 , Figure 2The universal sling provided by the present invention includes a support seat 100, a plurality of lifting rods 300 and a driving unit 400, wherein the upper end of the support seat 100 is used to connect a lifting device; the plurality of lifting rods 300 are evenly distributed on the circumference of the support seat 100, and are configured to be able to move away from or toward the support seat 100; the driving unit 400 is configured to be able to drive the plurality of lifting rods 300 to move away from the support seat 100 to be close to the hole wall of the through hole, and to be able to drive the plurality of lifting rods 300 to move toward the support seat 100 to leave the hole wall of the through hole.

[0039] In the universal lifting device provided by the present invention, multiple lifting rods 300 are evenly distributed on the circumference of the support seat 100, and the multiple lifting rods 300 can move away from or toward the support seat 100. When used in practice, the universal lifting device provided by the present invention is placed from top to bottom into the through hole of the component to be lifted, and the driving unit 400 drives the multiple lifting rods 300 to move away from the support seat 100 to fit closely to the hole wall of the through hole, thereby clamping and fixing the component to be lifted so that it can be lifted and moved. After the lifting is in place, the driving unit 400 drives the multiple lifting rods 300 to move toward the support seat 100 to leave the hole wall of the through hole, thereby realizing the separation of the universal lifting device from the component.

[0040] In the present invention, the driving unit 400 can drive the multiple lifting rods 300 to move away from the support seat 100 according to the size of the through hole of the component to be hoisted, and finally close to the hole wall of the through hole to achieve clamping and fixing of the component to be hoisted. That is, the universal hoist provided by the present invention can simultaneously meet the hoisting requirements of components of different specifications (with different through hole sizes), so that there is no need to replace the hoist when the product is changed, thereby saving the cost of hoisting equipment.

[0041] The universal sling provided by the present invention has the advantage of being easy to use. By placing a support seat 100 with a plurality of lifting rods 300 evenly distributed in the circumferential direction into the through hole of the component to be hoisted from top to bottom, and using a driving unit 400 to drive the plurality of lifting rods 300 to move away from the support seat 100 to fit closely against the hole wall of the through hole, the component to be hoisted can be clamped and fixed. When the component is hoisted into place, the driving unit 400 drives the plurality of lifting rods 300 to move toward the support seat 100 to leave the hole wall of the through hole, so that the sling and the component can be separated. This overcomes the problems of poor hoisting reliability and complicated hoisting operation process in the existing hoisting method of finding the hoisting point from the edge of the component. The universal sling provided by the present invention can realize efficient hoisting of the component and meet the requirements of the assembly line production rhythm.

[0042] The universal lifting device provided by the present invention provides a solution for lifting components with central through holes, especially components with only central through holes.

[0043] It can be understood that in the above scheme, the multiple lifting rods 300 are close to the through-hole of the component to be hoisted, and the friction between the two overcomes the self-weight of the component so that it can be lifted and moved. Therefore, it can be imagined that a structure that can increase the friction between the multiple lifting rods 300 on the side facing the through-hole will inevitably increase the clamping force of the multiple lifting rods 300 on the component to be hoisted, ensuring the reliable hoisting of the component to be hoisted by the universal hoist. The structure can be, for example, a flexible anti-skid material arranged on the side of the lifting rod 300 facing the through-hole. The material with flexible characteristics can increase the friction between the multiple lifting rods 300 and the through-hole of the component to be hoisted, and the material with flexible characteristics can also avoid damage to the through-hole of the component to be hoisted. More specifically, the flexible anti-skid material can be, for example, silicone.

[0044] In the present invention, the driving unit 400 can be any appropriate device as long as it can drive the plurality of lifting rods 300 to move away from or toward the support base 100 .

[0045] In a specific embodiment of the present invention, the support seat 100 has a suspension shaft 110 extending upward in a vertical direction, and the driving unit 400 includes a slider 410, a plurality of first connecting arms 420, a plurality of second connecting arms 430 and a driving part, the slider 410 is sleeved on the suspension shaft 110 and can move up and down along the axial length direction of the suspension shaft 110, the upper ends of the plurality of first connecting arms 420 are respectively hinged on the slider 410, the lower ends of the plurality of first connecting arms 420 are hingedly connected to the upper ends of the plurality of lifting rods 300 in a one-to-one correspondence, one end of the plurality of second connecting arms 430 is respectively hinged on the support seat 100, and the other ends of the plurality of second connecting arms 430 are hingedly connected to the plurality of lifting rods 300 in a one-to-one correspondence; the driving part is used to drive the slider 410 to move up and down, so as to push and pull the plurality of lifting rods 300 away from or toward the support seat 100 through the plurality of first connecting arms 420.

[0046] It can be understood that in the present invention, the number of the first connecting arms 420 corresponds to the number of the lifting rods 300, and during the up and down movement of the slider 410, the first connecting arms 420 can push and pull the lifting rods 300 hinged thereto to move away from or toward the support seat 100.

[0047] Combination Figure 4 It is a schematic diagram showing the principle that the slider 410 moves downward and pushes the lifting rod 300 to move away from the support seat 100 through the first connecting arm 420 .

[0048] In a specific embodiment of the present invention, Figure 2 , Figure 3As shown, there are three lifting rods 300 evenly distributed along the circumference of the support seat 100, that is, the three lifting rods 300 are evenly spaced 120° apart along the circumference of the support seat 100. Through the above arrangement, reliable clamping of the through hole of the component to be hoisted can be achieved. It is understandable that the lifting rods 300 evenly distributed on the circumference of the support seat 100 can also be set to four or five, and as the number of the lifting rods 300 increases, due to the limitation of their own volume, the difficulty of their arrangement will increase significantly, and their own volume is too large to be placed in the through hole of the component to be hoisted, resulting in inapplicability. Therefore, in the present invention, the number of the lifting rods 300 is preferably three.

[0049] Furthermore, in the present invention, in order to improve the stability of the lifting rod 300 when moving away from or toward the support seat 100, two second connecting arms 430 are provided on each lifting rod 300, and the two second connecting arms 430 are spaced apart along the length direction of the lifting rod 300.

[0050] For further information, see Figure 3 As shown, in a specific embodiment of the present invention, each second connecting arm 430 is configured as a two-piece structure to clamp the lifting rod 300 and is hingedly connected to the lifting rod 300 at the same time.

[0051] In the present invention, the driving part can be in any appropriate form, as long as it can drive the slider 410 to move up and down along the axial length direction of the suspension shaft 110. In one embodiment of the present invention, the driving part includes a positioning block 120, a handle assembly and a third connecting arm 460; the positioning block 120 is fixed on the suspension shaft 110 above the slider 410, the handle assembly has a handle seat 440 rotatably connected to the positioning block 120 and a handle 450 connected to the handle seat 440 and extending outward, and the two ends of the third connecting arm 460 are respectively hinged to the handle seat 440 and the slider 410, so that when the handle seat 440 rotates around the rotation axis extending in the horizontal direction, the slider 410 is driven to move up and down through the third connecting arm 460.

[0052] Furthermore, a compression spring 470 is provided between the positioning block 120 and the slider 410, and the compression spring 470 is configured to drive the slider 410 downward away from the positioning block 120. Through the above configuration, the slider 410 always has a tendency to move downward, that is, it always has a tendency to push the multiple lifting rods 300 away from the support seat 100 through the multiple first connecting arms 420.

[0053] Further, combined with Figure 5As shown, the handle 450 has a blind cavity extending along its length direction and opening toward the handle seat 440, and a latch rod 451 is arranged in the blind cavity. The latch rod 451 is provided with a lever 452 extending out of the blind cavity along the radial direction of the handle 450, and a spring 453 is arranged between the inner end of the latch rod 451 and the bottom of the blind cavity; the spring 453 is used to drive the latch rod 451 to extend out of the blind cavity and form a limiting fit with the upper end surface of the positioning block 120, and the lever 452 is used to move the latch rod 451 to retract it into the blind cavity, so as to release the limiting of the latch rod 451 and the positioning block 120 and enable the handle seat 440 to rotate around the rotation axis extending in the horizontal direction.

[0054] Combination Figure 3 As shown, the universal lifting device provided by the present invention, in the initial state, the latch rod 451 arranged in the blind cavity of the handle 450 forms a limit with the upper end surface of the positioning block 120 under the action of the spring 453. At this time, the handle seat 440 cannot rotate around the rotation axis extending in the horizontal direction, that is, the slider 410 cannot be pushed downward by the third connecting arm 460. When it is necessary to hoist a component, first place the universal hoist from top to bottom into the through hole of the component to be hoisted, then press the lever 452 to compress the spring 453, and retract the latch rod 451 into the blind cavity to release the limit of the latch rod 451 and the positioning block 120, then pull the handle 450 downward to rotate the handle seat 440 around the rotation axis extending in the horizontal direction, and drive the slider 410 downward through the third connecting arm 460. The slider 410 pushes the multiple lifting rods 300 respectively through the multiple first connecting arms 420 to move them away from the support seat 100 to fit closely to the hole wall of the through hole. At this time, the universal hoist can clamp the component to be hoisted, and it can be lifted using external lifting equipment; in particular, at this time, the elastic force of the compression spring 470 can act on the multiple first connecting arms 420 through the slider 410, so that the multiple lifting rods 300 remain away from the support seat 100 and fit closely to the hole wall of the through hole. When the component is hoisted to the required position, the handle 450 is pulled upward, during which the compression spring 470 is compressed until the latch rod 451 set in the blind cavity of the handle 450 forms a limit with the upper end surface of the positioning block 120 again to maintain the compression state of the compression spring 470.

[0055] In the present invention, the universal sling also includes a leveling unit 500, and the leveling unit 500 includes a connecting rod 510 and an adjusting rod 520; one end of the connecting rod 510 is connected to the support seat 100, and the other end extends outward in the horizontal direction; the adjusting rod 520 is arranged at the suspended end of the connecting rod 510 and extends in the vertical direction, and the adjusting rod 520 is arranged to be able to move in the vertical direction for adjusting the distance between the suspended end of the connecting rod 510 and the upper surface of the component.

[0056] It is understandable that the bottom end of the adjusting rod 520 needs to contact the component to be hoisted. In order to avoid damaging the surface of the component to be hoisted, in one embodiment of the present invention, a nylon head 540 is provided at the bottom end of the adjusting rod 520. The nylon head 540 is connected to the stud of the adjusting rod 520 through a threaded pair, and an adjusting nut 541 is provided between the nylon head 540 and the adjusting rod 520. By screwing the adjusting nut 541, the relative position of the nylon head 540 and the adjusting rod 520 can be adjusted to achieve fine adjustment. Through the above arrangement, by adjusting the connection position of the adjusting rod 520 and the connecting rod 510 to adjust the distance between the hanging end of the connecting rod 510 and the upper surface of the component, the overall center of gravity position of the universal sling and the component is adjusted, the horizontal posture of components of different specifications during the lifting and transportation process is controlled, and the stability of the components during the lifting and transportation process is ensured.

[0057] It should be noted that the adjusting rod 520 can be arranged at the hanging end of the connecting rod 510 in any appropriate form to adjust the distance between the hanging end of the connecting rod 510 and the upper surface of the component. In a specific embodiment of the present invention, the hanging end of the connecting rod 510 is provided with a connecting block 530, and the connecting block 530 has a vertically through-going accommodating cavity for the adjusting rod 520 to pass through and move in the vertical direction. The side of the connecting block 530 is also provided with a knob plunger 531 for fixing the relative position of the adjusting rod 520 in the connecting block 530. It can be understood that by presetting a hole on the adjusting rod 520 to match the leveling requirements of different components, the knob plunger 531 can be quickly screwed into the corresponding hole to lock the adjusting rod 520 during specific use.

[0058] In the present invention, the universal sling also includes a guide unit 600 arranged at the bottom of the support seat 100, and the guide unit 600 includes a lower pad 610, an auxiliary guide block 620 and a guide cone 630 arranged in sequence from the outside to the inside. The lower pad 610 and the auxiliary guide block 620 are respectively provided with a plurality of them, and the plurality of the lower pads 610 and the plurality of the auxiliary guide blocks 620 are respectively arranged at intervals along the circumference of the support seat 100, and the guide cone 630 is arranged as an inverted frustum or cone and is arranged at the bottom center position of the support seat 100.

[0059] Through the above-mentioned arrangement, the lower pad block 610 can preferentially contact the component to be hoisted (such as a flywheel housing) when the sling is lowered for hoisting, thereby ensuring that the component to be hoisted is not damaged; the auxiliary guide block 620 can play a pre-guiding role, so that the sling can be easily lowered into the through hole of the component to be hoisted, and the operation is convenient; the guide cone 630 can ensure the stability of the component when it is placed, for example, a supporting body is provided, and the supporting body has a receiving cavity with an opening pointing upward for the guide cone 630 to be inserted therein.

[0060] In the present invention, the universal lifting device also includes a protection unit 700, which includes a cylindrical shell 710 sleeved on the support seat 100, an upper cover plate 720 arranged at the upper end of the cylindrical shell 710, and a lower cover plate 730 arranged at the lower end of the cylindrical shell 710; the support seat 100 is fixed on the lower cover plate 730, and a plurality of through holes 731 are arranged on the lower cover plate 730, and the plurality of through holes 731 correspond to the plurality of lifting rods 300 one by one; through the above arrangement, the driving unit 400 is prevented from being exposed to the external environment and causing malfunctions due to the influence of external factors. It can be imagined that the cylindrical shell 710 is provided with an opening 711 extending in the vertical direction to ensure the rotation range of the handle 450, especially to directly limit the distance that the plurality of lifting rods 300 move away from the support seat 100 according to the vertical length of the opening 711, so as to match the hoisting requirements of components with through holes of different sizes. Furthermore, a mark is provided on the cylindrical shell 710 beside the opening 711 to identify the position of the handle 450 when different components are clamped in place, so as to remind the operator whether the corresponding component is clamped in place during the lifting operation.

[0061] Furthermore, a horizontal handle 740 is provided outside the protection unit 700. With the above arrangement, the operator can hold the horizontal handle 740 when hoisting the component, and put the universal hoist in the initial state into the through hole of the component from top to bottom.

[0062] The horizontal handle 740 can be arranged outside the protection unit 700 in any suitable form as long as it is convenient for the operator to hold the handle. In a specific embodiment of the present invention, the lower cover plate 730 is provided with a plurality of spaced fixing seats 732 around it for fixing the horizontal handle 740 .

[0063] In some embodiments, a lifting plate 310 is disposed at the bottom of each lifting rod 300 , and the lifting plate 310 is configured to extend horizontally in a direction away from the support seat 100 .

[0064] It is understandable that when the weight of the component to be hoisted is very heavy, relying solely on the friction between the multiple lifting rods 300 and the through holes of the component to be hoisted cannot ensure safe hoisting. By providing a lifting plate 310 at the bottom of the lifting rod 300, the supporting effect of the lifting plate 310 can ensure that the universal hoist can reliably clamp the component to be hoisted, effectively preventing safety accidents caused by the excessive weight of the component to be hoisted falling off.

[0065] In the present invention, a lifting unit 200 is provided at the upper end of the support seat 100 for connecting a lifting device, and the lifting unit 200 includes a hanging plate 210 arranged above the support seat 100 and a main lifting ring 220 arranged above the hanging plate 210, at least one lifting chain 230 is arranged between the main lifting ring 220 and the hanging plate 210, and at least one secondary protective chain 240 is arranged between the main lifting ring 220 and the protective unit 700.

[0066] The hanging plate 210 can be fixedly connected to the hanging shaft 110 in any appropriate form. In a specific embodiment of the present invention, the hanging shaft 110 passes through the hanging plate 210, and locking nuts 250 are provided on the shaft of the hanging shaft 110 on both sides of the hanging plate 210 for fixing the hanging plate 210 to the hanging shaft 110.

[0067] It can be understood that the number of lifting chains 230 can be arranged between the main lifting ring 220 and the hanging plate 210 as needed. In a specific embodiment of the present invention, three lifting chains 230 are provided, and three auxiliary lifting rings 211 are evenly distributed on the hanging plate 210. The lower ends of the three lifting chains 230 are connected to the three auxiliary lifting rings 211 one by one.

[0068] The purpose of setting the secondary protection chain 240 is to provide protection against the failure of the connection of the hoisting chain 230, and to fully ensure the safety of the hoisting. In a specific embodiment of the present invention, an L-shaped connector 750 is provided on the outside of the protection unit 700, and the upper end of the L-shaped connector 750 is sleeved on the hoisting shaft 110 through a sleeve 751, and is locked and fixed to the upper cover plate 720 by a nut, and the lower end of the L-shaped connector 750 is locked and fixed to the horizontal handle 740 by a clamp, and a connecting plate 752 is welded on the horizontal section of the L-shaped connector 750, and a connecting hole is provided on the connecting plate 752 for connecting to the secondary protection chain 240.

[0069] The preferred embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A universal lifting device for lifting components with through holes, characterized in that: The universal spreader comprises: A support seat (100), the upper end of the support seat (100) being used for connecting a lifting device; a plurality of lifting rods (300), the plurality of lifting rods (300) being evenly distributed in the circumferential direction of the support seat (100) and being configured to be able to move away from or toward the support seat (100); and A driving unit (400) is configured to be able to drive the multiple lifting rods (300) to move away from the support seat (100) so as to be in close contact with the hole wall of the through hole, and to be able to drive the multiple lifting rods (300) to move toward the support seat (100) so as to leave the hole wall of the through hole.

2. The universal sling according to claim 1, characterized in that: The support seat (100) has a suspension shaft (110) extending upward in a vertical direction, and the driving unit (400) comprises: A slider (410), wherein the slider (410) is sleeved on the suspension shaft (110) and is capable of moving up and down along the axial length direction of the suspension shaft (110); A plurality of first connecting arms (420), the upper ends of the plurality of first connecting arms (420) are respectively hinged on the slider (410), and the lower ends of the plurality of first connecting arms (420) are hingedly connected to the upper ends of the plurality of lifting rods (300) in a one-to-one correspondence; a plurality of second connecting arms (430), one end of each of the plurality of second connecting arms (430) being hingedly connected to the support seat (100), and the other end of each of the plurality of second connecting arms (430) being hingedly connected to the plurality of lifting rods (300) in a one-to-one correspondence; and A driving unit, the driving unit is used to drive the slider (410) to move up and down, so as to push and pull the plurality of lifting rods (300) away from or toward the support seat (100) through the plurality of first connecting arms (420).

3. The universal sling according to claim 2, characterized in that: Two second connecting arms (430) are provided on each lifting rod (300), and the two second connecting arms (430) are arranged at intervals along the length direction of the lifting rod (300).

4. The universal sling according to claim 2, characterized in that: The driving unit comprises: a positioning block (120), wherein the positioning block (120) is fixed on the suspension shaft (110) above the sliding block (410); A handle assembly, the handle assembly comprising a handle seat (440) rotatably connected to the positioning block (120) and a handle (450) connected to the handle seat (440) and extending outward; and A third connecting arm (460), wherein two ends of the third connecting arm (460) are respectively hinged to the handle seat (440) and the slider (410), so that when the handle seat (440) rotates around a rotation axis extending in a horizontal direction, the slider (410) is driven to move up and down through the third connecting arm (460).

5. The universal sling according to claim 4, characterized in that: A compression spring (470) is provided between the positioning block (120) and the sliding block (410), and the compression spring (470) is configured to drive the sliding block (410) downward away from the positioning block (120).

6. The universal sling according to claim 5, characterized in that: The handle (450) has a blind cavity extending along its length direction and opening toward the handle seat (440), a latch rod (451) is arranged in the blind cavity, a lever (452) is arranged on the latch rod (451) and extends out of the blind cavity along the radial direction of the handle (450), and a spring (453) is arranged between the inner end of the latch rod (451) and the bottom of the blind cavity; The spring (453) is used to drive the latch rod (451) to extend out of the blind cavity and form a limiting fit with the upper end surface of the positioning block (120), and the lever (452) is used to push the latch rod (451) to retract it into the blind cavity, so as to release the limiting fit between the latch rod (451) and the positioning block (120) and enable the handle seat (440) to rotate around a rotation axis extending in the horizontal direction.

7. The universal sling according to any one of claims 1 to 6, characterized in that: The universal sling further comprises a leveling unit (500), wherein the leveling unit (500) comprises a connecting rod (510) and an adjusting rod (520); one end of the connecting rod (510) is connected to the supporting seat (100), and the other end extends outward in a horizontal direction; the adjusting rod (520) is arranged at the suspended end of the connecting rod (510) and extends in a vertical direction, and the adjusting rod (520) is arranged to be movable in a vertical direction so as to adjust the distance between the suspended end of the connecting rod (510) and the upper surface of the component; and / or The universal lifting device further comprises a guide unit (600) arranged at the bottom of the support seat (100), the guide unit (600) comprising a lower pad (610), an auxiliary guide block (620) and a guide cone (630) arranged in sequence from the outside to the inside, a plurality of the lower pad (610) and a plurality of the auxiliary guide blocks (620) are respectively provided, and the plurality of the lower pads (610) and the plurality of the auxiliary guide blocks (620) are respectively arranged at intervals along the circumference of the support seat (100), and the guide cone (630) is arranged as an inverted frustum or cone and is arranged at the bottom center of the support seat (100); and / or The universal lifting device also includes a protection unit (700), and the protection unit (700) includes a cylindrical shell (710) sleeved on the support seat (100), an upper cover plate (720) arranged at the upper end of the cylindrical shell (710), and a lower cover plate (730) arranged at the lower end of the cylindrical shell (710); the support seat (100) is fixed on the lower cover plate (730), and the lower cover plate (730) is provided with a plurality of through holes (731), and the plurality of through holes (731) correspond one-to-one to the plurality of lifting rods (300).

8. The universal lifting device according to claim 7, characterized in that: A horizontal handle ring (740) is arranged outside the protection unit (700).

9. The universal sling according to claim 7, characterized in that: A lifting plate (310) is provided at the bottom of each lifting rod (300), and the lifting plate (310) is arranged to extend horizontally in a direction away from the support seat (100).

10. The universal sling according to claim 7, characterized in that: A hoisting unit (200) is provided at the upper end of the support seat (100) for connecting a lifting device, and the hoisting unit (200) comprises a hanging plate (210) arranged above the support seat (100) and a main hoisting ring (220) arranged above the hanging plate (210), at least one hoisting iron chain (230) is provided between the main hoisting ring (220) and the hanging plate (210), and at least one secondary protective iron chain (240) is provided between the main hoisting ring (220) and the protective unit (700).

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