Cavity workpiece hoisting device and cavity workpiece hoisting method

Abstract

The invention provides a cavity workpiece hoisting device and a cavity workpiece hoisting method. The cavity workpiece hoisting device comprises a hoisting assembly, a connecting shaft assembly, a sliding sleeve, a plurality of first supporting connecting pieces and a plurality of second supporting connecting pieces. When a to-be-hoisted cavity workpiece is hoisted, the sliding sleeve is pushed to get close to the connecting end of the second supporting connecting piece and the connecting shaft assembly, and the sliding sleeve pushes the first supporting connecting piece and the second supporting connecting piece in each supporting set to stretch out in the radial direction of the connecting shaft at the same time; the connecting ends of the first supporting connecting pieces and the second supporting connecting pieces of the multiple supporting sets abut against and are matched with different positions of the inner wall of the to-be-hoisted cavity workpiece at the same time, so that the to-be-hoisted cavity workpiece and the connecting shaft assembly are relatively fixed, and the hoisting assembly hoists the to-be-hoisted cavity workpiece by driving the connecting shaft assembly to move. Relative fixation and separation of the cavity workpiece to be hoisted are achieved through a simple structure, and then efficient hoisting of the cavity workpiece to be hoisted is achieved.

Description

Technical Field

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

[0002] Lifting operation refers to the process of lifting equipment, workpieces, tools, etc. by using various lifting machinery and tools to change their position. Lifting operation is indispensable in various construction fields. Due to different construction sites, the scale of lifting, the number of cranes, the length of lifting slings, etc. are all different. The lifting device used to connect with the workpiece to be lifted is an indispensable structure in lifting operations.

[0003] Lifting operations are common tasks in the fields of construction engineering, industrial production, equipment installation and maintenance. The lifting capacity, efficiency and safety of lifting equipment directly affect production efficiency, cost control and work efficiency. In the prior art, due to the lack of lifting devices specifically for lifting workpieces with cavities inside, the lifting process of hollow workpieces is inconvenient to operate and the lifting efficiency is low, which seriously reduces the flexibility and efficiency of the lifting operation of hollow workpieces. Summary of the invention

[0004] The present invention provides a hollow workpiece hoisting device and a hollow workpiece hoisting method, so as to solve the problem in the prior art that the hoisting process of the hollow workpiece is inconvenient to operate and the hoisting efficiency is low due to the lack of a hoisting device specifically for the hollow workpiece hoisting.

[0005] In order to solve the above problems, according to one aspect of the present invention, a hollow workpiece lifting device is provided, comprising: a lifting assembly, a connecting shaft assembly, a sliding sleeve, a plurality of first supporting connecting members and a plurality of second supporting connecting members; the lifting assembly is detachably connected to the connecting shaft assembly, and is used to drive the connecting shaft assembly to move; the sliding sleeve is sleeved on the outside of the connecting shaft assembly, and is slidably limited with the connecting shaft assembly to slide back and forth along the axial direction of the connecting shaft assembly; a first supporting connecting member and a second supporting connecting member form a supporting group; in the same supporting group, one end of the first supporting connecting member is rotatably connected to the sliding sleeve, and the other end is rotatably connected to one end of the second supporting connecting member, and the other end of the second supporting connecting member is rotatably connected to the sliding sleeve. The connecting shaft assembly is rotatably connected; multiple support groups are arranged at intervals along the circumference of the connecting shaft; wherein, when hoisting the cavity workpiece to be hoisted, the sliding sleeve is pushed to approach the connecting end of the second supporting connector and the connecting shaft assembly, and the sliding sleeve simultaneously pushes the first supporting connector and the second supporting connector in each supporting group to extend radially toward the connecting shaft, and the connecting ends of the first supporting connector and the second supporting connector move radially toward the connecting shaft, and the connecting ends of the first supporting connector and the second supporting connector of multiple support groups simultaneously abut and cooperate with different positions of the inner wall of the cavity workpiece to be hoisted, so that the cavity workpiece to be hoisted and the connecting shaft assembly are relatively fixed, and the hoisting assembly hoists the cavity workpiece to be hoisted by driving the connecting shaft assembly to move.

[0006] Furthermore, the cavity workpiece lifting device also includes a first limit member, which is arranged on the connecting shaft assembly and is used to axially limit the sliding sleeve to constrain the axial movement range of the sliding sleeve along the connecting shaft assembly; wherein, by constraining the axial movement range of the sliding sleeve along the connecting shaft assembly, the protruding size of the connecting ends of the first supporting connecting member and the second supporting connecting member is limited so that the protruding size is adapted to the inner wall size of the cavity workpiece to be lifted.

[0007] Furthermore, the cavity workpiece lifting device has a lifting state and a retracted state; in the lifting state, the sliding sleeve abuts against the first limiting member, and the connecting ends of the first supporting connecting member and the second supporting connecting member abut against and cooperate with the inner wall of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted and the connecting shaft assembly are relatively fixed; in the retracted state, the sliding sleeve is away from the first limiting member, and is limitedly cooperated with one end of the connecting shaft assembly away from the second supporting connecting member, and the connecting ends of the first supporting connecting member and the second supporting connecting member are clearance-matched with the inner wall of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted and the connecting shaft assembly are disconnected.

[0008] Furthermore, in the folded state, a plane perpendicular to the axial direction of the connecting shaft assembly is set as a projection plane, and the projection of the sliding sleeve is projected along the axial direction of the connecting shaft assembly onto the projection plane, and covers the projections of the multiple first supporting connectors and the multiple second supporting connectors.

[0009] Furthermore, the outer periphery of the connecting shaft assembly has a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals along the axial direction of the connecting shaft assembly; the first limiting member can be detachably matched with one of the positioning holes so that the first limiting member is fixed on the connecting shaft assembly; wherein, the protruding size is adjusted by selecting the positioning hole that matches with the first limiting member.

[0010] Furthermore, the connecting shaft assembly includes a load-bearing shaft, a connecting portion and a second limit member, the second limit member is fixedly arranged at one end of the load-bearing shaft, the connecting portion is fixedly arranged at the other end of the load-bearing shaft, the sliding sleeve is sleeved on the outside of the load-bearing shaft and cooperates with the load-bearing shaft for sliding limitation, and the second limit member is used for axially limiting the sliding sleeve; the connecting portion is rotatably connected to the other end of the second support connecting member in each support group respectively.

[0011] Furthermore, the connecting shaft assembly also includes two lifting rings, which are respectively arranged at both ends of the load-bearing shaft and are used to connect with the lifting assembly to drive the load-bearing shaft to move with the lifting assembly.

[0012] Furthermore, the cavity workpiece lifting device also includes a driving rod and a hydraulic cylinder, one end of the driving rod is connected to the sliding sleeve, and the other end is drivingly connected to the hydraulic cylinder, and the hydraulic cylinder drives the sliding sleeve to reciprocate along the axial direction of the connecting shaft assembly by driving the driving rod; wherein the hydraulic cylinder applies a first force to the sliding sleeve through the driving rod, and the first force points to the connecting end of the second support connecting member and the connecting shaft assembly, so that the connecting ends of the first support connecting member and the second support connecting member are tightly abutted and matched with the inner wall of the cavity workpiece to be lifted; the hydraulic cylinder pulls the sliding sleeve away from the connecting end of the second support connecting member and the connecting shaft assembly through the driving rod, so that the connecting ends of the first support connecting member and the second support connecting member gradually move away from the inner wall of the cavity workpiece to be lifted.

[0013] Furthermore, the cavity workpiece lifting device also includes a plurality of wear-resistant elastic parts, which are made of wear-resistant elastic materials; at least one wear-resistant elastic part is arranged at the connecting end of the first support connector and the second support connector in each support group, and when lifting the cavity workpiece to be lifted, the connecting ends of the first support connector and the second support connector of the plurality of support groups are abutted and matched with different positions of the inner wall of the cavity workpiece to be lifted through the plurality of wear-resistant elastic parts, and the wear-resistant elastic parts are used to buffer the impact of the connecting ends of the first support connector and the second support connector on the inner wall of the cavity workpiece to be lifted.

[0014] According to another aspect of the present invention, a method for hoisting a hollow workpiece is provided. The method for hoisting a hollow workpiece is applied to the above-mentioned hollow workpiece hoisting device. The method for hoisting a hollow workpiece comprises the following steps: placing the hollow workpiece hoisting device in the inner cavity of the hollow workpiece to be hoisted, adjusting the sliding sleeve to approach the connecting end of the second supporting connector and the connecting shaft assembly so that the first supporting connector and the second supporting connector in each supporting group extend outward from the connecting shaft, and after the connecting ends of the first supporting connector and the second supporting connector of the plurality of supporting groups simultaneously abut against different positions of the inner wall of the inner cavity of the hollow workpiece to be hoisted, adjusting the sliding sleeve The cylinder applies a first force, and the first force points to the connecting end of the second supporting connecting member and the connecting shaft assembly, so that the connecting ends of the first supporting connecting member and the second supporting connecting member are tightly abutted against the inner wall of the cavity workpiece to be hoisted; the hoisting assembly drives the connecting shaft assembly to move, and hoists the cavity workpiece to be hoisted to the specified position; after the cavity workpiece to be hoisted is hoisted to the specified position, the sliding sleeve is driven away from the connecting end of the second supporting connecting member and the connecting shaft assembly, so that the connecting ends of the first supporting connecting member and the second supporting connecting member are gradually away from the inner wall of the cavity workpiece to be hoisted, and then the cavity workpiece hoisting device is moved out from the internal cavity of the cavity workpiece to be hoisted to complete the hoisting work.

[0015] Applying the technical solution of the present invention, the present invention provides a hollow workpiece lifting device, comprising: a lifting assembly, a connecting shaft assembly, a sliding sleeve, a plurality of first supporting connecting members and a plurality of second supporting connecting members; the lifting assembly is detachably connected to the connecting shaft assembly, and is used to drive the connecting shaft assembly to move; the sliding sleeve is sleeved on the outside of the connecting shaft assembly, and is slidably limited with the connecting shaft assembly to slide back and forth along the axial direction of the connecting shaft assembly; a first supporting connecting member and a second supporting connecting member form a supporting group; in the same supporting group, one end of the first supporting connecting member is rotatably connected to the sliding sleeve, and the other end is rotatably connected to one end of the second supporting connecting member, and the other end of the second supporting connecting member is rotatably connected to the connecting shaft The components are rotatably connected; multiple support groups are arranged at circumferential intervals along the connecting shaft; wherein, when hoisting the cavity workpiece to be hoisted, the sliding sleeve is pushed to approach the connecting end of the second support connector and the connecting shaft component, and the sliding sleeve simultaneously pushes the first support connector and the second support connector in each support group to extend radially toward the connecting shaft, and the connecting ends of the first support connector and the second support connector move radially toward the connecting shaft, and the connecting ends of the first support connector and the second support connector of multiple support groups simultaneously abut and cooperate with different positions of the inner wall of the cavity workpiece to be hoisted, so that the cavity workpiece to be hoisted and the connecting shaft component are relatively fixed, and the hoisting component hoists the cavity workpiece to be hoisted by driving the connecting shaft component to move.

[0016] The present invention realizes the relative fixation and separation with the cavity workpiece to be hoisted by setting a hoisting assembly, a connecting shaft assembly, a sliding sleeve, a plurality of first supporting connectors and a plurality of second supporting connectors to cooperate with each other with a simple structure, thereby realizing efficient hoisting of the cavity workpiece to be hoisted; the cavity workpiece hoisting device proposed by the present invention can be efficiently applied to the hoisting of workpieces with cavities inside, taking into account both hoisting efficiency and hoisting safety, making the hoisting process of the cavity workpiece to be hoisted simple to operate, and improving the flexibility and efficiency of the hoisting operation of the cavity workpiece to be hoisted. The present invention can realize the rapid hoisting of the cavity workpiece to be hoisted, without the need for repeated assembly of the hoisting equipment, has a simple structure and low cost, is easy to assemble, and is subsequently maintained, transported and stored, and provides an efficient, safe and convenient technical solution for various hoisting needs, and is suitable for large-scale promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 A schematic diagram showing the external structure of a cavity workpiece lifting device provided by an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram of the external structure of the hollow workpiece lifting device provided by an embodiment of the present invention in a retracted state is shown;

[0020] Figure 3 A schematic diagram showing the internal structure of a cavity workpiece hoisting device provided by an embodiment of the present invention is shown;

[0021] Figure 4 A schematic diagram showing the specific structure of a sliding sleeve provided by an embodiment of the present invention is shown;

[0022] Figure 5 A specific structural schematic diagram of a second supporting connector provided in an embodiment of the present invention is shown.

[0023] The above drawings include the following reference numerals:

[0024] 10. Connecting shaft assembly; 11. Load-bearing shaft; 12. Connecting portion; 13. Second position-limiting member; 14. Lifting ring;

[0025] 20. Sliding sleeve;

[0026] 30. A first supporting connector;

[0027] 40. A second supporting connector;

[0028] 50. Support group. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] like Figures 1 to 5 As shown, an embodiment of the present invention provides a hollow workpiece lifting device, comprising: a lifting assembly, a connecting shaft assembly 10, a sliding sleeve 20, a plurality of first supporting connecting members 30 and a plurality of second supporting connecting members 40; the lifting assembly is detachably connected to the connecting shaft assembly 10, and is used to drive the connecting shaft assembly 10 to move; the sliding sleeve 20 is sleeved on the outside of the connecting shaft assembly 10, and is slidably limited with the connecting shaft assembly 10 to slide back and forth along the axial direction of the connecting shaft assembly 10; a first supporting connecting member 30 and a second supporting connecting member 40 form a supporting group 50; in the same supporting group 50, one end of the first supporting connecting member 30 is rotatably connected to the sliding sleeve 20, and the other end is rotatably connected to one end of the second supporting connecting member 40, and the other end of the second supporting connecting member 40 is rotatably connected to the connecting shaft The component 10 is rotatably connected; a plurality of support groups 50 are arranged at intervals along the circumference of the connecting shaft; wherein, when hoisting the cavity workpiece to be hoisted, the sliding sleeve 20 is pushed toward the connecting end of the second support connector 40 and the connecting shaft component 10, and the sliding sleeve 20 simultaneously pushes the first support connector 30 and the second support connector 40 in each support group 50 to extend radially toward the connecting shaft, and the connecting ends of the first support connector 30 and the second support connector 40 move radially toward the connecting shaft, and the connecting ends of the first support connector 30 and the second support connector 40 of the plurality of support groups 50 simultaneously abut and cooperate with different positions of the inner wall of the cavity workpiece to be hoisted, so that the cavity workpiece to be hoisted and the connecting shaft component 10 are relatively fixed, and the hoisting component hoists the cavity workpiece to be hoisted by driving the connecting shaft component 10 to move.

[0031] The present invention realizes the relative fixation and separation with the cavity workpiece to be hoisted by setting a hoisting assembly, a connecting shaft assembly 10, a sliding sleeve 20, a plurality of first supporting connectors 30 and a plurality of second supporting connectors 40 to cooperate with each other, and then realizes the efficient hoisting of the cavity workpiece to be hoisted by using a simple structure; the cavity workpiece hoisting device proposed by the present invention can be efficiently applied to the hoisting of workpieces with cavities inside, taking into account both hoisting efficiency and hoisting safety, making the hoisting process of the cavity workpiece to be hoisted simple to operate, and improving the flexibility and efficiency of the hoisting operation of the cavity workpiece to be hoisted. The present invention can realize the rapid hoisting of the cavity workpiece to be hoisted, without the need for repeated assembly of the hoisting equipment, has a simple structure and low cost, is easy to assemble, maintain, transport and store, and provides an efficient, safe and convenient technical solution for various hoisting needs, and is suitable for large-scale promotion and use.

[0032] Specifically, the cavity workpiece lifting device also includes a first limit member, which is arranged on the connecting shaft assembly 10 and is used to axially limit the sliding sleeve 20 to constrain the axial movement range of the sliding sleeve 20 along the connecting shaft assembly 10; wherein, by constraining the axial movement range of the sliding sleeve 20 along the connecting shaft assembly 10, the protruding size of the connecting ends of the first supporting connector 30 and the second supporting connector 40 is limited so that the protruding size is adapted to the inner wall size of the cavity workpiece to be lifted.

[0033] By setting the first limit member, the control over the axial movement of the sliding sleeve 20 is further enhanced, ensuring the precise adjustment of the extension size, which not only ensures the adaptation to cavity workpieces of different sizes, but also avoids damage to the workpiece or the device itself due to excessive extension size, thereby improving the service life of the lifting device and the safety of the lifting operation.

[0034] Specifically, Figure 1 , Figure 2 and Figure 3 As shown, the cavity workpiece lifting device has a lifting state and a retracted state; in the lifting state, the sliding sleeve 20 abuts against the first limiting member, and the connecting ends of the first supporting connector 30 and the second supporting connector 40 abut against the inner wall of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted and the connecting shaft assembly 10 are relatively fixed; in the retracted state, the sliding sleeve 20 is away from the first limiting member, and is limitedly matched with one end of the connecting shaft assembly 10 away from the second supporting connector 40, and the connecting ends of the first supporting connector 30 and the second supporting connector 40 are matched with the inner wall gap of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted is disconnected from the connecting shaft assembly 10.

[0035] By setting the hoisting state and the folded state, the device can achieve optimal performance and space efficiency when in use and stored respectively; in the hoisting state, the cooperation between the sliding sleeve 20 and the first limit member ensures the firm fixation of the device; in the folded state, the position adjustment of the sliding sleeve 20 enables the first supporting connector 30 and the second supporting connector 40 to be tightly folded, which facilitates the transportation, storage and removal of the device from the internal cavity of the cavity workpiece to be hoisted, while reducing accidental damage that may occur during transportation.

[0036] like Figure 2 and Figure 3 As shown, in the folded state, a plane perpendicular to the axial direction of the connecting shaft assembly 10 is set as a projection plane, and the projection of the sliding sleeve 20 is projected along the axial direction of the connecting shaft assembly 10 to the projection plane, and the projection of the sliding sleeve 20 covers the projections of multiple first supporting connectors 30 and multiple second supporting connectors 40.

[0037] This arrangement ensures the compactness of the first supporting connector 30 and the second supporting connector 40 when they are folded, which not only saves space but also helps to protect the first supporting connector 30 and the second supporting connector 40 from external damage, thereby extending the service life of the device.

[0038] Optionally, the outer periphery of the connecting shaft assembly 10 has a plurality of positioning holes, and the plurality of positioning holes are arranged at axial intervals along the connecting shaft assembly 10; the first limiting member can be detachably engaged with one of the positioning holes so that the first limiting member is fixed on the connecting shaft assembly 10; wherein, the protruding size is adjusted by selecting the positioning hole that engages with the first limiting member.

[0039] By arranging a plurality of positioning holes on the periphery of the connecting shaft assembly 10, the position of the first limit member can be adjusted, and the extension size of the first supporting connecting member 30 and the second supporting connecting member 40 can be flexibly adjusted. This design is highly flexible and can adapt to a variety of cavity workpieces, thereby improving the versatility and lifting efficiency of the device.

[0040] like Figure 1 , Figure 2 and Figure 3 As shown, the connecting shaft assembly 10 includes a load-bearing shaft 11, a connecting portion 12 and a second limiting member 13. The second limiting member 13 is fixedly arranged at one end of the load-bearing shaft 11, and the connecting portion 12 is fixedly arranged at the other end of the load-bearing shaft 11. The sliding sleeve 20 is sleeved on the outside of the load-bearing shaft 11 and cooperates with the load-bearing shaft 11 for sliding limiting. The second limiting member 13 is used for axially limiting the sliding sleeve 20; the connecting portion 12 is rotatably connected to the other end of the second support connecting member 40 in each support group 50 respectively.

[0041] By providing the connecting shaft assembly 10 including the bearing shaft 11, the connecting portion 12 and the second limit member 13, it is ensured that the overall working reliability and the overall strength of the connecting shaft assembly 10 meet the use requirements, and the overall structure of the connecting shaft assembly 10 is simplified, thereby effectively reducing the cost and installation complexity.

[0042] like Figure 1 , Figure 2 and Figure 3 As shown, the connecting shaft assembly 10 further includes two lifting rings 14, which are respectively arranged at both ends of the load-bearing shaft 11 and are used to be connected with the lifting assembly to drive the load-bearing shaft 11 to move with the lifting assembly.

[0043] By providing two lifting rings 14, the lifting assembly can be connected to the connecting shaft assembly 10 more conveniently and safely, which simplifies the lifting preparation process and improves the efficiency of the lifting operation; at the same time, the setting of the lifting ring 14 provides two reliable hooking points for the lifting assembly, which ensures the balance of the load-bearing shaft 11 during the lifting process when both lifting rings 14 are lifted, further improving the safety and stability of the lifting.

[0044] Specifically, the cavity workpiece lifting device also includes a driving rod and a hydraulic cylinder, one end of the driving rod is connected to the sliding sleeve 20, and the other end is drivingly connected to the hydraulic cylinder, and the hydraulic cylinder drives the sliding sleeve 20 to reciprocate along the axial direction of the connecting shaft assembly 10 by driving the driving rod; wherein the hydraulic cylinder applies a first force to the sliding sleeve 20 through the driving rod, and the first force points to the connecting end between the second support connecting member 40 and the connecting shaft assembly 10, so that the connecting ends of the first support connecting member 30 and the second support connecting member 40 are tightly abutted against the inner wall of the cavity workpiece to be lifted; the hydraulic cylinder pulls the sliding sleeve 20 away from the connecting end of the second support connecting member 40 and the connecting shaft assembly 10 through the driving rod, so that the connecting ends of the first support connecting member 30 and the second support connecting member 40 are gradually away from the inner wall of the cavity workpiece to be lifted.

[0045] By setting up a driving rod and a hydraulic cylinder, the movement of the sliding sleeve 20 is automated, manual operations are reduced, and operational efficiency and safety are improved; the application of the first force enables the first supporting connector 30 and the second supporting connector 40 to accurately fit closely with the inner wall of the cavity workpiece to be hoisted, thereby enhancing stability during the hoisting process; when retracting, the automatic retraction mechanism of the sliding sleeve 20 ensures that the first supporting connector 30 and the second supporting connector 40 are quickly retracted, thereby facilitating preparation for the next hoisting operation.

[0046] Optionally, the cavity workpiece lifting device also includes a plurality of wear-resistant elastic parts, which are made of wear-resistant elastic materials; at least one wear-resistant elastic part is arranged at the connecting end of the first support connector 30 and the second support connector 40 in each support group 50, and when lifting the cavity workpiece to be lifted, the connecting ends of the first support connector 30 and the second support connector 40 of the plurality of support groups 50 are abutted and matched with different positions of the inner wall of the cavity workpiece to be lifted through the plurality of wear-resistant elastic parts, and the wear-resistant elastic parts are used to buffer the impact of the connecting ends of the first support connector 30 and the second support connector 40 on the inner wall of the cavity workpiece to be lifted.

[0047] By providing a wear-resistant elastic member, the impact of the connecting ends of the first supporting connector 30 and the second supporting connector 40 on the inner wall of the cavity workpiece to be hoisted is effectively buffered, thereby preventing damage to the inner wall of the workpiece during the hoisting process and protecting the surface quality of the inner wall of the workpiece, which is particularly important for precise or fragile cavity workpieces. In addition, the selection of wear-resistant elastic materials (for example, wear-resistant rubber materials) can effectively reduce wear and extend the service life of the cavity workpiece hoisting device.

[0048] The present invention also provides a method for hoisting a hollow workpiece, which is applied to the above-mentioned hollow workpiece hoisting device, and the method for hoisting a hollow workpiece comprises the following steps: placing the hollow workpiece hoisting device in the inner cavity of the hollow workpiece to be hoisted, adjusting the sliding sleeve 20 to approach the connecting end of the second supporting connector 40 and the connecting shaft assembly 10, so that the first supporting connector 30 and the second supporting connector 40 in each supporting group 50 extend outward from the connecting shaft, and after the connecting ends of the first supporting connector 30 and the second supporting connector 40 of the plurality of supporting groups 50 are simultaneously abutted against different positions of the inner wall of the inner cavity of the hollow workpiece to be hoisted, applying the first A force is applied, and the first force points to the connecting end of the second supporting connector 40 and the connecting shaft assembly 10, so that the connecting end of the first supporting connector 30 and the second supporting connector 40 is in close contact with the inner wall of the cavity workpiece to be hoisted; the hoisting assembly drives the connecting shaft assembly 10 to move, and hoists the cavity workpiece to be hoisted to the designated position; after the cavity workpiece to be hoisted is hoisted to the designated position, the sliding sleeve 20 is driven away from the connecting end of the second supporting connector 40 and the connecting shaft assembly 10, so that the connecting end of the first supporting connector 30 and the second supporting connector 40 is gradually away from the inner wall of the cavity workpiece to be hoisted, and then the cavity workpiece hoisting device is moved out from the internal cavity of the cavity workpiece to be hoisted to complete the hoisting work.

[0049] The cavity workpiece lifting method proposed in the present invention specifies in detail the use steps of the cavity workpiece lifting device, ensuring the standardization and efficiency of the lifting operation; by accurately controlling the movement of the sliding sleeve 20, the cavity workpiece to be lifted can be quickly fixed and released, simplifying the operation process and shortening the operation time; in addition, by setting the step of moving the cavity workpiece lifting device out of the internal cavity of the cavity workpiece to be lifted, the smooth progress of the next lifting operation is guaranteed, reflecting the efficiency and flexibility of the overall lifting operation.

[0050] In summary, the present invention provides a hollow workpiece hoisting device and a hollow workpiece hoisting method. The present invention realizes relative fixation and separation with the hollow workpiece to be hoisted by setting a hoisting assembly, a connecting shaft assembly 10, a sliding sleeve 20, a plurality of first supporting connectors 30 and a plurality of second supporting connectors 40 to cooperate with each other, and uses a simple structure to achieve relative fixation and separation with the hollow workpiece to be hoisted, thereby achieving efficient hoisting of the hollow workpiece to be hoisted; the hollow workpiece hoisting device proposed in the present invention can be efficiently applied to the hoisting of workpieces with cavities inside, taking into account both hoisting efficiency and hoisting safety, making the hoisting process of the hollow workpiece to be hoisted simple to operate, and improving the flexibility and efficiency of the hoisting operation of the hollow workpiece to be hoisted. The present invention can realize the rapid hoisting of the hollow workpiece to be hoisted, without the need for repeated assembly of the hoisting device, has a simple structure and low cost, is easy to assemble, and is subsequently maintained, transported and stored, and provides an efficient, safe and convenient technical solution for various hoisting needs, and is suitable for large-scale promotion and use.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A hollow workpiece lifting device, characterized in that: include: A hoisting assembly, a connecting shaft assembly (10), a sliding sleeve (20), a plurality of first supporting connecting members (30) and a plurality of second supporting connecting members (40); the hoisting assembly is detachably connected to the connecting shaft assembly (10) and is used to drive the connecting shaft assembly (10) to move; the sliding sleeve (20) is sleeved on the outside of the connecting shaft assembly (10) and is slidably limited with the connecting shaft assembly (10) so as to reciprocate along the axial direction of the connecting shaft assembly (10); one first supporting connecting member (30) and one second supporting connecting member (40) form a supporting group (50); in the same supporting group (50), one end of the first supporting connecting member (30) is rotatably connected to the sliding sleeve (20), and the other end is rotatably connected to one end of the second supporting connecting member (40), and the other end of the second supporting connecting member (40) is rotatably connected to the connecting shaft assembly (10); a plurality of the supporting groups (50) are arranged at intervals along the circumference of the connecting shaft; wherein, when hoisting the cavity workpiece to be hoisted, the sliding sleeve (20) is pushed to approach the connecting end of the second supporting connecting member (40) and the connecting shaft assembly (10), and the sliding sleeve (20) simultaneously pushes the first supporting connecting member (30) and the second supporting connecting member (40) in each of the supporting groups (50) to extend radially toward the connecting shaft, and the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) move radially toward the connecting shaft, and the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) of multiple supporting groups (50) simultaneously abut and cooperate with different positions of the inner wall of the cavity workpiece to be hoisted, so that the cavity workpiece to be hoisted and the connecting shaft assembly (10) are relatively fixed, and the hoisting assembly hoists the cavity workpiece to be hoisted by driving the connecting shaft assembly (10) to move.

2. The hollow workpiece lifting device according to claim 1, characterized in that: The hollow workpiece lifting device also includes a first limit member, which is arranged on the connecting shaft assembly (10) and is used to axially limit the sliding sleeve (20) to restrict the axial movement range of the sliding sleeve (20) along the connecting shaft assembly (10); wherein, by restricting the axial movement range of the sliding sleeve (20) along the connecting shaft assembly (10), the protruding size of the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) is limited so that the protruding size is adapted to the inner wall size of the hollow workpiece to be lifted.

3. The hollow workpiece lifting device according to claim 2, characterized in that: The cavity workpiece lifting device has a lifting state and a retracted state; in the lifting state, the sliding sleeve (20) abuts against the first limiting member, and the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) abut against and cooperate with the inner wall of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted and the connecting shaft assembly (10) are relatively fixed; in the retracted state, the sliding sleeve (20) is away from the first limiting member, and is limitedly matched with one end of the connecting shaft assembly (10) away from the second supporting connecting member (40), and the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) are gap-matched with the inner wall of the cavity workpiece to be lifted, so that the cavity workpiece to be lifted is disconnected from the connecting shaft assembly (10).

4. The hollow workpiece lifting device according to claim 3, characterized in that: In the retracted state, a plane perpendicular to the axial direction of the connecting shaft assembly (10) is set as a projection plane, and the projection of the sliding sleeve (20) is projected onto the projection plane along the axial direction of the connecting shaft assembly (10), and covers the projections of the plurality of first supporting connectors (30) and the plurality of second supporting connectors (40).

5. The hollow workpiece lifting device according to claim 2, characterized in that: The outer periphery of the connecting shaft assembly (10) has a plurality of positioning holes, and the plurality of positioning holes are arranged at intervals along the axial direction of the connecting shaft assembly (10); the first limiting member can be detachably matched with one of the positioning holes so that the first limiting member is fixed on the connecting shaft assembly (10); wherein the extension size is adjusted by selecting the positioning hole that matches with the first limiting member.

6. The hollow workpiece lifting device according to claim 1, characterized in that: The connecting shaft assembly (10) comprises a bearing shaft (11), a connecting portion (12) and a second limiting member (13); the second limiting member (13) is fixedly arranged at one end of the bearing shaft (11); the connecting portion (12) is fixedly arranged at the other end of the bearing shaft (11); the sliding sleeve (20) is sleeved on the outside of the bearing shaft (11) and cooperates with the bearing shaft (11) in a sliding limiting manner; the second limiting member (13) is used for axially limiting the sliding sleeve (20); the connecting portion (12) is rotatably connected to the other end of the second supporting connecting member (40) in each of the supporting groups (50).

7. The hollow workpiece lifting device according to claim 6, characterized in that: The connecting shaft assembly (10) further comprises two lifting rings (14), which are respectively arranged at two ends of the load-bearing shaft (11) and are used to connect with the lifting assembly to drive the load-bearing shaft (11) to follow the movement of the lifting assembly.

8. The hollow workpiece lifting device according to claim 1, characterized in that: The hollow workpiece lifting device also includes a driving rod and a hydraulic cylinder, one end of the driving rod is connected to the sliding sleeve (20), and the other end is drivingly connected to the hydraulic cylinder, and the hydraulic cylinder drives the sliding sleeve (20) to reciprocate along the axial direction of the connecting shaft assembly (10) by driving the driving rod; wherein the hydraulic cylinder applies a first force to the sliding sleeve (20) through the driving rod, and the first force is directed to the connecting end of the second supporting connecting member (40) and the connecting shaft assembly (10), so that the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) are tightly abutted and matched with the inner wall of the hollow workpiece to be lifted; the hydraulic cylinder pulls the sliding sleeve (20) away from the connecting end of the second supporting connecting member (40) and the connecting shaft assembly (10) through the driving rod, so that the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) are gradually away from the inner wall of the hollow workpiece to be lifted.

9. The hollow workpiece lifting device according to claim 1, characterized in that: The hollow workpiece lifting device also includes a plurality of wear-resistant elastic parts, and the wear-resistant elastic parts are made of wear-resistant elastic materials; at least one of the wear-resistant elastic parts is arranged at the connecting end of the first supporting connecting part (30) and the second supporting connecting part (40) in each of the supporting groups (50); when lifting the hollow workpiece to be lifted, the connecting ends of the first supporting connecting parts (30) and the second supporting connecting parts (40) of the plurality of supporting groups (50) are abutted and matched with different positions of the inner wall of the hollow workpiece to be lifted through the plurality of wear-resistant elastic parts; the wear-resistant elastic parts are used to buffer the impact of the connecting ends of the first supporting connecting part (30) and the second supporting connecting part (40) on the inner wall of the hollow workpiece to be lifted.

10. A method for hoisting a hollow workpiece, characterized in that: The hollow workpiece hoisting method is applied to the hollow workpiece hoisting device according to any one of claims 1 to 9, and the hollow workpiece hoisting method comprises the following steps: The cavity workpiece lifting device is placed in the internal cavity of the cavity workpiece to be lifted, and the sliding sleeve (20) is adjusted to be close to the connecting end of the second supporting connecting member (40) and the connecting shaft assembly (10), so that the first supporting connecting member (30) and the second supporting connecting member (40) in each of the supporting groups (50) extend to the outside of the connecting shaft. After the connecting ends of the first supporting connecting members (30) and the second supporting connecting members (40) of multiple supporting groups (50) are simultaneously abutted against different positions of the inner wall of the internal cavity of the cavity workpiece to be lifted, a first force is applied to the sliding sleeve (20), and the first force is directed to the connecting end of the second supporting connecting member (40) and the connecting shaft assembly (10), so that the connecting ends of the first supporting connecting member (30) and the second supporting connecting member (40) are tightly abutted against the inner wall of the cavity workpiece to be lifted; the lifting assembly drives the connecting shaft assembly (10) to move, and lifts the cavity workpiece to be lifted to a designated position; After the hollow workpiece to be hoisted is hoisted to a designated position, the sliding sleeve (20) is driven away from the connection end between the second supporting connector (40) and the connecting shaft assembly (10), so that the connection ends of the first supporting connector (30) and the second supporting connector (40) gradually move away from the inner wall of the hollow workpiece to be hoisted, and then the hollow workpiece hoisting device is moved out of the inner cavity of the hollow workpiece to be hoisted to complete the hoisting work.

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