A self-centering internal support device

Abstract

This invention belongs to the field of support technology, specifically relating to a self-centering internal support device to solve the problem of low internal support efficiency in housings. It includes a frame, a mandrel, and a support skeleton. The mandrel moves between a first and a second axial position on the frame, and a pushing component is mounted on the mandrel. The support skeleton includes multiple support rods, all elastically connected to the frame, and distributed circumferentially around the mandrel. When the mandrel is in the first position on the frame, the support rods are pulled together by elastic force. When the mandrel is in the second position on the frame, the pushing component pushes the support rods apart. This self-centering internal support device provides rapid support and positioning for housings.

Description

Technical Field

[0001] This application belongs to the field of support technology, and more specifically, relates to a self-centering internal support device. Background Technology

[0002] In the machining industry, polygonal box-shaped structures are generally designed using an inner lining and an outer frame welded together. During the welding process, internal support devices are often used for positioning and clamping the box to control its dimensional accuracy and reduce welding deformation.

[0003] In related technologies, the internal support device used for internal support positioning of the housing typically includes a frame and multiple internal support rods, which are radially distributed and threaded onto the frame surface. During processing, the housing is fitted onto the frame, and the internal support positioning of the housing is achieved by manually adjusting the extension length of the internal support rods on each side of the frame. However, in actual processing, due to the large number of internal support rods, the adjustment process is cumbersome and inefficient during batch manufacturing of housings, making it difficult to meet the requirements of efficient batch welding of housings, and thus requiring improvement. Summary of the Invention

[0004] To improve the internal support efficiency of the box, the present invention provides a self-centering internal support device.

[0005] The present invention provides a self-centering internal support device, which adopts the following technical solution:

[0006] A self-centering internal support device includes a frame, a spindle, and a support frame. The spindle is movable between a first axial position and a second axial position of the frame. A pushing component is provided on the spindle. The support frame includes multiple support rods, all of which are elastically connected to the frame and distributed circumferentially around the spindle. When the spindle is in the first position of the frame, the multiple support rods are brought together by elastic force. When the spindle is in the second position of the frame, the pushing component pushes the multiple support rods, causing them to disperse.

[0007] By adopting the above technical solution, during use, by adjusting the position of the mandrel on the frame, multiple support rods can be synchronously converged when the mandrel is in the first position on the frame, and synchronously dispersed when the mandrel is in the second position on the frame. The unified movement of multiple support rods is achieved through a single adjustment action, thereby greatly improving the adjustment and installation efficiency of the support inside the box, facilitating the quick replacement of the box by the staff, and meeting the high-efficiency welding requirements of batch boxes.

[0008] As a further preferred embodiment, the frame includes a support ring, and the outer circumferential surface of the support ring is provided with a plurality of guide holes for the support rod to pass through, the inner diameter of the plurality of guide holes being equal to the outer diameter of the support rod.

[0009] By adopting the above technical solution, the support ring with guide holes can provide a stable installation base for the movable adjustment of the support rod, so that the adjusted support rod can be stably oriented and ensure that the self-orienting internal support device has good internal positioning accuracy.

[0010] As a further preferred embodiment, an elastic element is sleeved on the outer periphery of the support rod, one end of the elastic element is connected to the inner wall of the support ring, and the opposite end of the elastic element is connected to the support rod. The elastic element applies an elastic force to the support rod toward the center of the support ring.

[0011] By adopting the above technical solution, the elastic element applies a pushing force to the support rod, so that the support rod can be pushed towards the center of the support ring by the elastic element when it is not pushed by the pushing component, so that multiple support rods are in a stable mutually converged state, which facilitates the loading and unloading of the box in this device by the staff.

[0012] As a further preferred embodiment, the pushing assembly includes a fixing ring and climbing inserts for pushing the support rod. The fixing ring is fixed and sleeved on the outer periphery of the mandrel. A plurality of climbing inserts are fixed circumferentially to the outer periphery of the fixing ring. The thickness of the plurality of climbing inserts gradually decreases along the axial direction of the fixing ring. The end faces of the plurality of climbing inserts away from the mandrel face the adjacent support rod.

[0013] By adopting the above technical solution, during the processing, by adjusting the position of the mandrel along the axial direction, the pushing component on the mandrel and the support rod can be relatively displaced; during this process, the pushing surface of the climbing block on the support rod changes, and based on the elastic connection between the support rod and the frame, the support rod can be reciprocated along the radial direction of the mandrel, thereby realizing the support positioning and release of multiple support rods on the inner wall of the box.

[0014] As a further preferred embodiment, the pushing component further includes a positioning baffle, which is fixed and sleeved on the outer periphery of the fixing ring, and the positioning baffle is adjacent to the end of the minimum thickness of the climbing insert.

[0015] By adopting the above technical solution, the set positioning baffle can limit the movement position of the mandrel, so that the mandrel can be accurately adjusted to the first position of the frame.

[0016] As a further preferred embodiment, the support frame further includes a roller connected to one end of the support rod that extends into the inner cavity of the support ring, and the axial direction of the roller is perpendicular to the axial direction of the support ring.

[0017] By adopting the above technical solution, the roller can transform the pushing form between the pushing component and the support rod into rolling friction. During rolling friction, the contact point of the roller will constantly change, resulting in less wear and less vibration and noise during the use of the device.

[0018] As a further preferred embodiment, the support frame further includes corner support plates and flat support plates, with multiple corner support plates and flat support plates alternately arranged along the circumferential direction of the core axis, and each corner support plate and flat support plate being connected to the outer end of an adjacent support rod.

[0019] By adopting the above technical solution, the corner support plate can support the corners of the polygonal box, while the flat support plate can support the flat surface of the polygonal box, so that the self-centering device can provide a more stable support foundation for the box.

[0020] As a further preferred embodiment, the frame also includes a support plate and a connecting rod. Two support plates are coaxially arranged. The end face of the support plate is provided with a through hole for the mandrel to slide through. The support ring is coaxially arranged between the two support plates. The connecting rod connects the support plate and the support ring.

[0021] By adopting the above technical solution, the set support plate and connecting rod can protect the support ring and the pushing component, preventing the support ring and the pushing component from being bumped or knocked.

[0022] As a further preferred embodiment, the frame also includes a plurality of outer protective plates, which are distributed at intervals along the circumference of the support ring on the outer periphery of the support ring, and all of the outer protective plates are connected to the support plate.

[0023] By adopting the above technical solution, the outer protective plate can reinforce the self-centering internal support device and improve its structural stability.

[0024] As a further preferred embodiment, a linear power component is also included, wherein the fixed end of the linear power component is connected to the external foundation, and the output end of the linear power component is coaxially connected to one end of the mandrel.

[0025] By adopting the above technical solution, the staff can adjust the linear power component to achieve the adjustment of the spindle from the first position to the second position in the axial direction of the frame, which is simple and convenient to operate.

[0026] In summary, the present invention has at least the following beneficial technical effects:

[0027] 1. By adjusting the position of the mandrel on the frame, multiple support rods can be quickly and synchronously spread out and converged, thereby greatly improving the adjustment and installation efficiency of the support inside the box, making it convenient for staff to quickly replace the box, and meeting the high-efficiency welding requirements of batch boxes;

[0028] 2. By adjusting the mandrel along the axial direction, the relative displacement between the pushing component and the support rod on the mandrel can be achieved. As the thickness of the climbing insert in the pushing component gradually decreases along the axial direction of the mandrel, the pushing surface of the climbing insert on the support rod changes. Based on the elastic connection between the support rod and the frame, the reciprocating adjustment of the support rod along the radial direction of the mandrel can be achieved, thereby realizing the support positioning and release of multiple support rods on the inner wall of the box.

[0029] 3. The set positioning baffle can limit the movement of the mandrel, so that the mandrel can be accurately adjusted to the first position of the frame. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the self-centering internal support device in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the overall structure of the shell in an embodiment of the present invention;

[0032] Figure 3 This is a schematic cross-sectional view of the self-centering internal support device when the spindle is in the second position of the frame.

[0033] Figure 4 This is a schematic diagram of the connection structure of the support ring and the support frame in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the connection structure of the support rod, elastic element, roller and corner support plate;

[0035] Figure 6 This is a schematic diagram of the connection structure of the support rod, elastic element, roller and flat support plate;

[0036] Figure 7 This is a schematic diagram of the structure of the driving component in an embodiment of the present invention.

[0037] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0038] 1. Frame; 11. Support ring; 111. Positioning ring; 112. Guide hole; 12. Connecting rod; 13. Support plate; 14. Outer protective plate; 2. Mandrel; 3. Support frame; 31. Support rod; 32. Elastic element; 33. Roller; 34. Corner support plate; 35. Flat support plate; 4. Pushing assembly; 41. Fixing ring; 42. Climbing insert; 43. Positioning baffle; 5. Guide tube; 6. Linear power component. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0040] In the description of this invention, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] The following is in conjunction with the appendix Figure 1-7 The present invention will be described in further detail below.

[0044] This invention discloses a self-centering internal support device.

[0045] Reference Figure 1 , Figure 2 and Figure 3 The self-centering internal support device includes a frame 1, a spindle 2, and a support frame 3. The spindle 2 moves between a first and a second axial position on the frame 1, and a pushing component 4 is mounted on the spindle 2. The support frame 3 includes multiple support rods 31, all of which are elastically connected to the frame 1 and are distributed circumferentially around the spindle 2. When the spindle 2 is in the first position on the frame 1, the multiple support rods 31 are brought together by elastic force, facilitating the assembly and disassembly of the housing by operators using the self-centering internal support device. When the spindle 2 is in the second position on the frame 1, the pushing component 4 pushes the multiple support rods 31, causing them to spread out radially, quickly providing internal support and positioning for the housing.

[0046] To improve the stability of the device in supporting the housing, in this embodiment, four support frames 3 are spaced apart along the axial direction for multi-point support and positioning of the housing; and four corresponding pushing components 4 are provided on the spindle 2, with each of the four pushing components 4 corresponding to one of the four support frames 3, enabling the synchronous deployment and convergence of the four support frames 3. In other embodiments, the support frames 3 may also be three, five, etc.

[0047] Furthermore, refer to Figure 2 and Figure 3 The frame 1 includes a support ring 11, connecting rods 12, and a support plate 13. Two support plates 13 are coaxially arranged, and the end face of the support plate 13 has a through hole for the mandrel 2 to slide through. Multiple connecting rods 12 are evenly arranged along the axial direction of the support plate 13, and the two ends of the multiple connecting rods 12 in the length direction are respectively bolted to the support plate 13.

[0048] In this embodiment, the number of support rings 11 is consistent with the number of support frames 3. Specifically, four support rings 11 are arranged at intervals along the axial direction, and all four support rings 11 are coaxially disposed between the two support discs 13. All four support rings 11 are connected to the connecting rods 12. Multiple guide holes 112 for the support rods 31 to pass through are opened at intervals along the circumference of the outer peripheral surface of the four support rings 11. The inner diameter of the multiple guide holes 112 is equal to the outer diameter of the support rods 31, and the openings of the guide holes 112 all face the center of the support ring 11.

[0049] To improve the structural stability of the frame 1, the frame 1 also includes multiple outer protective plates 14. These outer protective plates 14 are spaced apart circumferentially around the support ring 11, and each outer protective plate 14 is connected to the support plate 13. As a preferred embodiment, the outer protective plates 14 are made of channel steel, which is structurally stable and readily available.

[0050] During use, the hollow frame 1 is lightweight and easy to assemble. The support ring 11 with guide holes 112 provides a stable guiding foundation for the movement adjustment of each support rod 31, so that the adjusted support rod 31 can be stably oriented and ensure that the self-orienting internal support device has good internal positioning accuracy.

[0051] Furthermore, refer to Figure 4 The end face of the support ring 11 has multiple through holes for the connecting rod 12 to pass through. A positioning ring 111 is bolted to each through hole on the end face of the support ring 11. The positioning ring 111 is coaxial with the corresponding through hole, and a threaded hole is provided on the outer periphery of the positioning ring 111. During the assembly of the support ring 11 and the connecting rod 12, the operator can adjust the position of the support ring 11 along the length of the connecting rod 12 as needed. When the target position is reached, a bolt is screwed into the threaded hole on the outer periphery of the positioning ring 111, so that the head of the bolt locks the periphery of the connecting rod 12, thus completing the connection between the support ring 11 and the connecting rod 12.

[0052] Furthermore, refer to Figure 3 and Figure 4 An elastic element 32 is fitted around the outer periphery of one end of the support rod 31 that extends into the inner cavity of the support ring 11. One end of the elastic element 32 is connected to the inner wall of the support ring 11, and the opposite end of the elastic element 32 is connected to the support rod 31. The elastic element 32 applies a spring force to the support rod 31 toward the center of the support ring 11. In this embodiment, the elastic element 32 is selected as a spring; in other embodiments, the elastic element 32 is selected as an elastic sheet or a spring pad, etc. The setting of the elastic element 32 allows the multiple support rods 31 in the support frame 3 to quickly converge, making it convenient for workers to replace the box.

[0053] Furthermore, refer to Figure 4 , Figure 5 and Figure 6 The support frame 3 also includes rollers 33, corner support plates 34 and flat support plates 35. The number of rollers 33 is the same as the number of support rods 31. The rollers 33 are rotatably connected to one end of the support rod 31 that extends into the inner cavity of the support ring 11. The rotation axis of the rollers 33 is perpendicular to the axis of the support ring 11.

[0054] The total number of corner support plates 34 and flat support plates 35 is the same as the number of support rods 31. The corner support plates 34 and flat support plates 35 are alternately arranged along the circumference of the support ring 11, and each corner support plate 34 and flat support plate 35 is connected to the outer end of the adjacent support rod 31. The corner support plates 34 support the corners of the polygonal box, and the flat support plates 35 support the planes of the polygonal box, so that the self-centering device can provide a more stable support foundation for the box.

[0055] Furthermore, refer to Figure 3 and Figure 7 To enable the rapid deployment of multiple support rods 31 in the support frame 3, the pushing component 4 includes a fixing ring 41, a climbing insert 42, and a positioning baffle 43. The fixing ring 41 is sleeved on the outer periphery of the spindle 2. Multiple climbing inserts 42 are provided, and each climbing insert 42 corresponds to one of the multiple support rods 31 in the support frame 3, and is used to push the corresponding support rod 31.

[0056] Specifically, multiple climbing inserts 42 are fixed to the outer periphery of the fixing ring 41 at intervals along the circumference of the fixing ring 41 by bolts. The thickness of the multiple climbing inserts 42 gradually decreases along the axial direction of the spindle 2. The outer surface of the multiple climbing inserts 42 faces the adjacent support rod 31, and the outer surface of the climbing inserts 42 is in contact with the arc wheel surface of the roller 33 on the adjacent support rod 31. The positioning baffle 43 is fixed and sleeved on the outer periphery of the fixing ring 41, and the positioning baffle 43 is adjacent to the end of the climbing insert 42 with the smallest thickness.

[0057] Furthermore, the slope of the climbing insert 42 gradually increases from small to large along the direction from the climbing insert 42 to the positioning baffle 43, and then decreases again. The climbing insert 42 is designed with a two-stage slope, which allows the support frame 3 to expand at a speed that is initially fast and then slows down, initially steep and then level, thus better tightening the box section. Furthermore, being designed as an insert makes it easy to process and replace.

[0058] Furthermore, the positioning baffle 43 is used for limiting, so that the spindle 2 can be precisely adjusted to the first position of the frame 1 during the adjustment process.

[0059] In other embodiments, if the end of the support rod 31 is not provided with a roller 33, the climbing insert 42 directly acts on the end of the support rod 31.

[0060] Furthermore, refer to Figure 1 In order to improve the adjustment stability of the mandrel 2 between the first and second axial positions of the frame 1, a guide tube 5 is threadedly connected to the outer end face of one of the support plates 13. The guide tube 5 is coaxial with the support plate 13 and is used to further guide the mandrel 2.

[0061] Furthermore, refer to Figure 1 The self-centering internal support device also includes a linear power component 6. The fixed end of the linear power component 6 is connected to the external foundation, and the output end of the linear power component 6 is coaxially connected to one end of the spindle 2 along its length. The linear power component 6 can be a cylinder, a hydraulic cylinder, or an electric push rod, etc., as long as it can achieve stable linear displacement adjustment of the spindle 2.

[0062] The above are all preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A self-centering intraluminal stent device, characterized by, The utility model provides a kind of supporting mechanism, including rack (1), mandrel (2) and support skeleton (3), the mandrel (2) is active in the axial first position to second position of the rack (1), and the mandrel (2) is provided with push assembly (4); The rack (1) includes support ring (11), connecting rod (12) and support disc (13), the support disc (13) is coaxially provided with two, the end surface of the support disc (13) is provided with the perforation for the mandrel (2) to penetrate, the support ring (11) is coaxially arranged between two support discs (13), and the connecting rod (12) is connected with the support disc (13) and the support ring (11); The support skeleton (3) includes a plurality of support rods (31), and the plurality of support rods (31) are elastically connected with the rack (1). The plurality of support rods (31) are distributed on the circumferential side of the mandrel (2) along the circumference of the mandrel (2). The outer periphery of the support rod (31) is provided with an elastic member (32). The elastic member (32) is connected with the support ring (11) and the support rod (31). The elastic member (32) applies a force to the support rod (31) towards the center of the support ring (11). The outer peripheral surface of the support ring (11) is provided with a plurality of guide holes (112) for the support rod (31) to penetrate. The inner diameter of the plurality of guide holes (112) is equal to the outer diameter of the support rod (31). The support skeleton (3) further includes an angle support plate (34) and a flat support plate (35). The angle support plate (34) and the flat support plate (35) are alternately provided with a plurality of support rods (31) along the circumference of the mandrel (2). The angle support plate (34) and the flat support plate (35) are connected to the outer end of the adjacent support rod (31) one by one. The push assembly (4) includes a fixed ring (41), a position stop plate (43), and a plurality of climbing inserts (42). The fixed ring (41) is fixed and sleeved on the outer periphery of the mandrel (2). The plurality of climbing inserts (42) are fixed on the outer periphery of the fixed ring (41) along the circumference of the fixed ring (41). The thickness of the plurality of climbing inserts (42) gradually decreases along the axial direction of the mandrel (2). The end surface of the plurality of climbing inserts (42) away from the fixed ring (41) faces the adjacent support rod (31), which is used to push the support rod (31). The position stop plate (43) is fixed and sleeved on the outer periphery of the fixed ring (41). The position stop plate (43) is adjacent to the thinnest end of the climbing insert (42). The climbing insert (42) is made of two sections with different slopes. The slope of the climbing insert (42) first increases and then decreases from the climbing insert (42) to the position stop plate (43). When the mandrel (2) is located at the first position of the rack (1), the plurality of support rods (31) are gathered together by the elastic force. When the mandrel (2) is located at the second position of the rack (1), the push assembly (4) pushes the plurality of support rods (31), so that the plurality of support rods (31) are spread apart.

2. A self-centering intraluminal stent device as in claim 1, wherein, The support skeleton (3) further comprises a roller (33) which is rotationally connected to one end of the support rod (31) extending into the inner cavity of the support ring (11), and the axial direction of the roller (33) is perpendicular to the axial direction of the support ring (11).

3. The self-centering intraluminal stent device of claim 1, wherein, The rack (1) further comprises a plurality of outer protective plates (14) which are circumferentially spaced and distributed on the outer periphery of the support ring (11), and each of the plurality of outer protective plates (14) is connected with the support disc (13).

4. The self-centering intraluminal stent device of claim 1, wherein, Further comprising a linear power element (6), a fixed end of the linear power element (6) is connected with an external foundation, and an output end of the linear power element (6) is coaxially connected with an end of the mandrel (2).

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