Butt-joint supporting device for rotary cylinder in narrow space and using method of butt-joint supporting device

Abstract

The invention provides a butt-joint supporting device for rotary cylinders in narrow and small space and a using method thereof.The butt-joint supporting device comprises two supporting pieces and a telescopic assembly, the two supporting pieces are oppositely arranged in the rotary cylinders, the two ends of the two supporting pieces are correspondingly spaced by a preset distance to form two adjusting spaces, and the supporting pieces are located at the joint position of the two rotary cylinders; the telescopic assembly is arranged between the two supporting pieces, and the telescopic assembly is used for enabling the two ends of the telescopic assembly to be far away from or close to each other so as to stretch into or stretch out of the two adjusting spaces; the two supporting pieces and the telescopic assembly are independently installed in the narrow space in the rotary cylinder and then combined, the problem that a traditional support cannot be installed in the rotary cylinder can be solved, supporting force is provided for the adjacent inner walls of the two rotary cylinders at the same time through the two supporting pieces, and the supporting effect is good. The two rotary cylinders are consistent in axis and stable in relative position after butt joint, and the butt joint precision and the supporting stability are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding support, and particularly relates to a butt joint support device for a rotary cylinder in a narrow space and a use method thereof. BACKGROUND

[0002] With the development of various industries, the demand for rotary products is different, and the types of rotary products are more and more various. The cost of casting production of rotary products is high, and the cycle is long, which cannot meet the demand of the industry.

[0003] In the prior art, in order to improve the production efficiency, a welding process is usually used to combine rotary standard parts, so as to meet the demand of different types of rotary products and reduce the production cost.

[0004] The rotary cylinder is a hollow cylindrical workpiece with two open ends. The butt joint of the two rotary cylinders is to align the ends of the two rotary cylinders and make the axes consistent, and then weld.

[0005] However, since the contact surface of the two rotary cylinders after being combined and aligned is small, the surface of the rotary cylinder is smooth and difficult to clamp and fix, the space inside the rotary cylinder is narrow and difficult to support inside by using a traditional support, and it is difficult to maintain the relative position stability of the two rotary cylinders during the welding process, which leads to low welding efficiency and insufficient butt joint precision of the two rotary cylinders. SUMMARY

[0006] In view of the deficiencies in the related art, the application provides a butt joint support device for a rotary cylinder in a narrow space and a use method thereof. The two support members and the telescopic assembly are independently installed in the narrow space in the rotary cylinder and then combined, which can solve the problem that the traditional support cannot be installed in the rotary cylinder. Moreover, the two support members simultaneously provide support force to the adjacent inner walls of the two rotary cylinders, which can ensure that the axes of the two rotary cylinders are consistent and the relative position is stable after butt joint, thereby improving the butt joint precision and support stability.

[0007] In one aspect, the application provides a butt joint support device for a rotary cylinder in a narrow space, which is used for supporting when the open ends of the two rotary cylinders are aligned and welded. The butt joint support device comprises: Two support members are arranged in the rotary cylinder in opposition. The two ends of the two support members are separated by a predetermined distance to form two adjustment spaces. The support members are located at the joint position of the two rotary cylinders, and the outer walls of the support members simultaneously abut the adjacent inner walls of the two rotary cylinders. A telescopic assembly is arranged between the two support members. The telescopic assembly is used to move away from or close to each other at both ends to extend into or out of the two adjustment spaces, so as to increase or decrease the two predetermined distances, and correspondingly enhance or release the support force of the two support members on the two rotary cylinders.

[0008] In some embodiments, the docking support device further comprises: a clearance groove circumferentially disposed on the outer wall of the support member, the clearance groove having a largest opening end facing the joint position of the two rotary cylinders.

[0009] In some embodiments, the telescopic assembly comprises: a shaft member disposed between the two support members; a wedge member disposed at each end of the shaft member, each wedge member being threadedly connected to one end of the shaft member, and the other wedge member being rotatably disposed at the other end of the shaft member; when the shaft member rotates, the wedge members threadedly connected to the shaft member axially displace along the shaft member, so that the two wedge members simultaneously extend into or out of the adjustment space.

[0010] In some embodiments, the two wedge members are threadedly connected to the two ends of the shaft member, respectively, and the thread directions on the two wedge members are opposite, so that the two wedge members simultaneously extend into or out of the adjustment space when the shaft member rotates.

[0011] In some embodiments, the docking support device further comprises: a threaded sleeve fixedly disposed on one end of the wedge member close to the shaft member, for threadedly connecting the shaft member; a clearance groove disposed in the wedge member and communicating with the threaded sleeve, for accommodating the shaft member after the shaft member passes through the threaded sleeve.

[0012] In some embodiments, the preset distance in the adjustment space gradually decreases from one end close to the shaft center of the rotary cylinder to the other end, and the outer diameter of the wedge member close to one end of the shaft member gradually decreases to the other end.

[0013] In some embodiments, the length of the wedge member along the shaft member in the axial direction is less than the thickness of the support member along the rotary cylinder in the radial direction.

[0014] In some embodiments, the docking support device further comprises: an adjustment member fixedly disposed between the two ends of the shaft member, the adjustment member being used to drive the shaft member to rotate along its axis.

[0015] In some embodiments, the support member is arc-shaped relative to the two end faces of the rotary cylinder, the arc-shaped surface of the support member close to the rotary cylinder is in contact with the inner wall of the rotary cylinder, and the arc-shaped surfaces of the two support members away from the rotary cylinder jointly form an operation space, the operation space being used to assemble and disassemble the telescopic assembly.

[0016] In another aspect, the application provides a method for using the butt joint support device for narrow space rotary cylinder, which is used for supporting when the opening ends of two rotary cylinders are aligned for welding, and the method comprises the following steps: a pre-installation step, in which two support members are installed in one of the rotary cylinders, and the two support members are partially extended out of the rotary cylinder along the axial direction through the opening end of the rotary cylinder, and then the two ends of the telescopic assembly are respectively inserted into the two adjusting spaces between the two support members, so that the outer walls of the two support members are pre-tightened against the inner walls of the rotary cylinder; a butt joint support step, in which the other rotary cylinder is sleeved on the partially extended parts of the two support members, and the two ends of the telescopic assembly are moved away from each other to continue to extend into the two adjusting spaces, so that the outer walls of the two support members are simultaneously tightly attached to the inner walls of the adjacent two parts of the two rotary cylinders; a welding and disassembly step, in which after the welding work is completed at the joint of the outer walls of the two rotary cylinders, the two ends of the telescopic assembly are moved close to each other to extend out of the two adjusting spaces, so that the two support members are separated from the inner walls of the adjacent two parts of the two rotary cylinders, and then the telescopic assembly and the two support members are taken out through the opening end of any one of the rotary cylinders to complete the disassembly.

[0017] In summary, the application provides a docking support device for narrow space rotary cylinder and its using method, which can solve the problem that the traditional support cannot be installed in the rotary cylinder by two supporting members and a telescopic assembly which are independently installed in the narrow space in the rotary cylinder and then combined, can provide support force to the adjacent inner walls of the two rotary cylinders through the two supporting members, can ensure that the axes of the two rotary cylinders are consistent and the relative position is stable after docking, and can improve the docking accuracy and support stability, can adjust the preset distance between the two supporting members by relative movement of the two ends of the telescopic assembly, can adapt to support rotary cylinders with different inner diameters, and is convenient to adjust in the narrow space in the rotary cylinder, thereby improving the versatility and practicality of the whole docking support device, can effectively improve the support stability and fitting accuracy of the supporting member by setting the arc surface structure of the supporting member and the inner wall of the rotary cylinder, can avoid the problems of support deflection or sliding caused by local contact, and the arc surface design can also realize uniform distribution of support force, reduce structural stress concentration, and enhance the service life and reliability of the docking support device, can effectively improve the adaptability of the whole docking support device to the welding operation of the rotary cylinder by setting the accommodation groove on the outer wall of the supporting member with the maximum opening end facing the welding seam position, can provide strong and stable support while avoiding the problems of poor forming and adhesion of the rotary cylinder at the back welding position, can greatly improve the efficiency and uniformity of the force applied to or released from the supporting member by the rotation of the shaft member to synchronously drive the two wedge blocks, can avoid the jamming and limiting problems of the shaft member during movement by setting the avoidance groove, can improve the relative displacement amount of the shaft member and the wedge block, thereby increasing the adjustment amount of the support force, the cooperation of the screw and the avoidance groove optimizes the utilization of the internal space, significantly reduces the overall size of the telescopic assembly in the axial direction, and adapts to the narrow installation environment requirements, and the taper-shaped cavity with one end wide and the other end narrow is set as the adjustment space, and the wedge block with a conical shape is set, so that the wedge block can form gradually increasing wedge force after being inserted into the adjustment space, the expansion force between the two supporting members can be transmitted to the inner wall of the rotary cylinder in a stable and linearly increasing manner, the local pressure is effectively dispersed, the damage risk of the inner wall of the rotary cylinder is reduced, and the support stability and the docking accuracy of the two rotary cylinders are improved.

[0018] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and attained by the structure particularly pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings described herein are intended to provide further understanding of the present application, and constitute a part of the present application. The illustrative embodiments of the present application and their description serve to explain the present application. They do not constitute an improper limitation on the present application. In the drawings: Figure 1This is a perspective view of a docking support device for a rotating cylinder in a confined space, as described in this application. Figure 2 This is a front view of a docking support device for a rotating cylinder in a confined space, as described in this application. Figure 3 This is a structural schematic diagram of the support component of this application; Figure 4 This is a schematic diagram of the connection structure between the rotating shaft and the adjusting component in this application; Figure 5 This is a schematic diagram of the connection structure between the wedge and the threaded sleeve in this application; Figure 6 This is a first schematic diagram of the docking support device for a rotating cylinder in a confined space according to this application; Figure 7 This is a second schematic diagram of the docking support device for a rotating cylinder in a confined space according to this application; Figure 8 For this application Figure 7 Schematic diagram of section AA; Figure 9 For this application Figure 8 A magnified view of a section at point C; Figure 10 This is a third schematic diagram of the docking support device for a rotating cylinder in a confined space according to this application; Figure 11 For this application Figure 10 Schematic diagram of the BB section; Figure 12 For this application Figure 11 A magnified view of a section at point D.

[0020] 100. Support component; 200. Telescopic assembly; 201. Rotating shaft; 202. Wedge block; 300. Clearance groove; 400. Screw sleeve; 500. Clearance groove; 600. Adjusting component; 700. First rotating cylinder; 800. Second rotating cylinder; 900. Third rotating cylinder. Detailed Implementation

[0021] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0022] In the description of the application, it needs to be understood that the terms "center", "transverse", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0023] The terms "first", "second", "third" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0024] In the description of the application, it needs to be explained that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0025] Reference is made to the accompanying drawings Figures 1 to 12 , Figure 1 is a perspective view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 2 is a front view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 3 is a structural schematic view of the support piece according to the application; Figure 4 is a schematic view of the connection structure between the rotating shaft piece and the adjusting piece according to the application; Figure 5 is a schematic view of the connection structure between the wedge block and the screw sleeve according to the application; Figure 6 is a first use schematic view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 7 is a second use schematic view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 8 is a third use schematic view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 7 is a schematic view of the A-A section in the application; Figure 9 is a schematic view of the B-B section in the application; Figure 8 is a local enlarged view at C in the application; Figure 10 is a third use schematic view of a butt joint support device for a rotary cylinder in a narrow space according to the application; Figure 11 is a schematic view of the A-A section in the application; Figure 10 is a schematic view of the B-B section in the application; Figure 12 is a schematic view of the A-A section in the application; Figure 11A local enlarged view at D; specific embodiments are described below with reference to the above figures. Embodiment one Referring to the drawings Figures 1 to 12 The application provides a butt joint support device for a narrow space rotary cylinder, which is used for supporting when the opening ends of the two rotary cylinders are aligned and welded. The butt joint support device comprises two support pieces 100 and a telescopic assembly 200. The two support pieces 100 are arranged in the rotary cylinders oppositely. The two ends of the two support pieces 100 are separated by a preset interval to form two adjustment spaces. The support pieces 100 are located at the joint positions of the two rotary cylinders, and the outer walls of the support pieces 100 abut against the inner walls of the adjacent two parts of the two rotary cylinders at the same time. The telescopic assembly 200 is arranged between the two support pieces 100. The telescopic assembly 200 is used for moving away from or close to each other at the two ends to extend into or out of the two adjustment spaces, so as to increase or decrease the two preset intervals, and correspondingly enhance or release the support force of the two support pieces 100 on the two rotary cylinders.

[0027] Specifically, the two support pieces 100 are independently arranged in the rotary cylinders and arranged in the rotary cylinders oppositely. The two ends of one support piece 100 and the two ends of the other support piece 100 are separated by a preset interval to form two adjustment spaces.

[0028] By extending the two ends of the telescopic assembly 200 into the two adjustment spaces, the two support pieces 100 can be pushed away from each other, so that the outer walls of the two support pieces 100 are pressed against the inner walls of the rotary cylinders, and stable support is formed in the narrow internal space of the rotary cylinders.

[0029] The support pieces 100 are located at the joint positions of the two rotary cylinders, and the outer walls of the support pieces 100 abut against the inner walls of the adjacent two parts of the two rotary cylinders at the same time, that is, along the axial direction of the rotary cylinders, part of the outer wall of any support piece 100 abuts against the inner wall of one rotary cylinder, and the other part of the outer wall abuts against the inner wall of the other rotary cylinder.

[0030] By arranging the support pieces 100 at the joint positions of the two rotary cylinders, when the two support pieces 100 are pushed away from each other, the inner walls of the two rotary cylinders can be supported at the same time, so that the axial lines of the two rotary cylinders are consistent and the relative positions are stable, which is convenient for subsequent welding operation.

[0031] The manufacturing material of the support pieces 100 should be selected according to the material and working condition of the rotary cylinders, including but not limited to high-strength aluminum alloy, carbon fiber composite material or engineering plastic. The edges of the support pieces 100 are chamfered to facilitate the arrangement in the rotary cylinders, or to facilitate the extension of the telescopic assembly 200 between the two support pieces 100.

[0032] The telescopic assembly 200 is used to synchronously move the two ends thereof towards each other or away from each other, when the two ends of the telescopic assembly 200 move away from each other and extend into the two adjusting spaces between the two support members 100, the two support members 100 are pushed to expand away from each other, so that the outer walls of the support members 100 are tightly attached to the inner walls of the adjacent two parts of the rotary cylinder, thereby forming stable support.

[0033] Conversely, when the two ends of the telescopic assembly 200 move towards each other and extend out of the two adjusting spaces between the two support members 100, the pushing force on the two support members 100 is gradually reduced, until the two support members 100 lose the support force, and then the two support members 100 are easily disassembled from the rotary cylinder.

[0034] The relative movement of the two ends of the telescopic assembly 200 includes but is not limited to hydraulic, threaded, and electric drive modes, to adapt to space, control accuracy, and environmental requirements.

[0035] By independently assembling the two support members 100 and the telescopic assembly 200 into the narrow space in the rotary cylinder and then combining them, the problem that the traditional support cannot be assembled into the rotary cylinder can be solved; by simultaneously providing support force to the adjacent inner walls of the two rotary cylinders by the two support members 100, the axial alignment and relative position stability of the two rotary cylinders after butt joint can be ensured, thereby improving the butt joint accuracy and support stability; by moving the two ends of the telescopic assembly 200 relative to each other to adjust the preset distance between the two support members 100, not only can different rotary cylinders with different inner diameters be supported, but also the adjustment operation in the narrow space in the rotary cylinder is facilitated, thereby improving the versatility and practicality of the entire butt joint support device.

[0036] Reference is made to the accompanying drawings Figure 1 , Figure 2 , Figure 3 , Figure 8 , Figure 10 In some embodiments, the end surfaces of the support member 100 relative to the two ends of the rotary cylinder are arc surfaces, the arc surface of the support member 100 relative to the rotary cylinder is attached to the inner wall of the rotary cylinder, and the arc surfaces of the two support members 100 relative to the rotary cylinder are combined to form an operation space, which is used to assemble and disassemble the telescopic assembly 200.

[0037] Specifically, by designing the end surface of the support member 100 as a curved surface, the end surface of the support member 100 relative to the rotary cylinder is designed as an arc surface that is adapted to the inner wall of the rotary cylinder, so that the outer wall of the support member 100 is tightly attached to the inner wall of the rotary cylinder, thereby increasing the contact area and improving the support stability.

[0038] When the side end face of the support 100 close to the side end face of the rotary cylinder is an arc surface, the curvature radius of the arc surface should be adjusted according to the inner diameter of the rotary cylinder to achieve the best fit and mechanical distribution; the arc surface is also provided with anti-skid texture or flexible buffer layer to enhance the friction and adapt to the defects of the inner wall of the rotary cylinder.

[0039] The side end face of the support 100 close to the side end face of the rotary cylinder is an arc surface curved away from the axis of the rotary cylinder, and when the two supports 100 are arranged in the rotary cylinder, the two arc surfaces between the two supports 100 form an operation space.

[0040] The operation space facilitates the operation personnel to assemble or disassemble or adjust the telescopic assembly 200, and realizes the quick assembly or disassembly and adjustment of the whole docking support device.

[0041] The shape of the operation space includes but is not limited to oval and circular to adapt to the assembly angle of different telescopic assemblies 200.

[0042] By setting the arc surface structure of the support 100 and the inner wall of the rotary cylinder, the support stability and fitting accuracy of the support 100 can be effectively improved, the problems of support deflection or sliding caused by local contact can be avoided, and the arc surface design can also realize uniform distribution of support force, reduce structural stress concentration, and enhance the service life and reliability of the docking support device.

[0043] The arc surface of the two supports 100 away from the rotary cylinder forms an operation space, so that even in a limited space environment, the insertion, rotation, locking or removal operation of the telescopic assembly 200 can be smoothly completed, and the installation efficiency and operation safety are improved.

[0044] Reference is made to the accompanying drawings Figure 1 , Figure 3 , Figure 12 In some embodiments, the yielding slot 300 is arranged around the outer wall of the support 100, and the maximum opening end of the yielding slot 300 faces the joint position of the two rotary cylinders.

[0045] Specifically, the yielding slot 300 is arranged around the rotary cylinder axis on the arc surface of the support 100 close to the inner wall of the rotary cylinder, and the cross-sectional shape of the yielding slot 300 includes but is not limited to U-shaped, V-shaped and stepped.

[0046] The yielding slot 300 is arranged around the outer wall of the support 100, and the maximum opening end thereof is aligned with the joint position of the two rotary cylinders, that is, the welding seam position is aligned with the maximum opening end of the yielding slot 300, so as to avoid the problems of poor back forming of the welding position or adhesion of the outer wall of the support 100 and the inner wall of the rotary cylinder caused by the support 100 adhering to the inner wall of the two rotary cylinders during welding.

[0047] By setting a clearance groove 300 with the largest opening end facing the weld position on the outer wall of the support 100, the adaptability of the entire docking support device to the welding operation of the rotary cylinder is effectively improved. It provides strong and stable support while avoiding problems such as poor forming on the back of the weld and adhesion of the rotary cylinder.

[0048] Reference Appendix Figures 1 to 5 In some embodiments, the telescopic assembly 200 includes a pivot 201 and two wedges 202. The pivot 201 is disposed between two support members 100, and the two wedges 202 are respectively disposed at both ends of the pivot 201. One wedge 202 is threadedly connected to one end of the pivot 201, and the other wedge 202 is rotatably disposed at the other end of the pivot 201. When the pivot 201 rotates, the wedges 202 threadedly connected to the pivot 201 are displaced relative to each other along the axial direction of the pivot 201, so that the two wedges 202 simultaneously extend into or out of the two adjustment spaces.

[0049] Specifically, the shaft 201 is provided with an external thread, and the wedge 202 is provided with a corresponding threaded hole to connect the shaft 201 with a thread.

[0050] The materials for the pivot component 201 include, but are not limited to, high-strength stainless steel, alloy steel, or lightweight alloy, in order to balance structural strength and weight reduction requirements.

[0051] The drive methods for the 201 rotating shaft include, but are not limited to, manual drive, built-in motor, and external knob drive, to adapt to different operating environments.

[0052] The shape of the wedge 202 is set to correspond to the internal shape of the filling adjustment space, and the edge of the wedge 202 is chamfered to facilitate insertion into the adjustment space.

[0053] The type of thread should be selected according to the load requirements, such as fine thread, trapezoidal thread, or ball screw, to improve adjustment smoothness and load-bearing capacity.

[0054] The thread pitch should be set to fine or coarse type according to the range of support force adjustment to meet different needs of high-precision fine adjustment or rapid expansion and contraction.

[0055] When the rotating shaft 201 rotates around its axis, the wedge 202, which is threaded to one end of the shaft, will move axially along the rotating shaft 201 under the helical side effect to extend into or out of the adjustment space.

[0056] Meanwhile, the wedge 202 located at the other end of the rotating shaft 201 is not threaded to the rotating shaft. It only rotates in conjunction with the rotating shaft 201 to rotate and moves together with the rotating shaft 201 relative to the threaded wedge 202. This allows the two wedges 202 to move in and out of the adjustment space synchronously, thereby stabilizing or releasing the support of the support member 100.

[0057] The rotation of the rotating shaft 201 synchronously drives the two wedge blocks 202 to adjust, thereby greatly improving the efficiency and uniformity of the force exerted on or released from the support 100.

[0058] Reference is made to the accompanying drawings Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 In some embodiments, the two wedge blocks 202 are respectively threadedly connected to the two ends of the rotating shaft 201, and the thread directions of the two wedge blocks 202 are opposite, so that the two wedge blocks 202 simultaneously extend into or out of the two adjustment spaces when the rotating shaft 201 rotates.

[0059] Specifically, by arranging the wedge blocks 202 with opposite thread directions at the two ends of the rotating shaft 201, when the rotating shaft 201 rotates around its axis, the two wedge blocks 202 move in two opposite directions of moving away from each other or moving close to each other along the axial direction of the rotating shaft 201.

[0060] In the embodiment, when the thread of one wedge block 202 is right-handed thread, the thread of the other wedge block 202 is left-handed thread; conversely, when the thread of one wedge block 202 is left-handed thread, the thread of the other wedge block 202 is right-handed thread. Because the thread directions are opposite, when the rotating shaft 201 rotates, a symmetrical and stable expansion or contraction effect can be formed, which greatly improves the synchronism and adjustment efficiency of the telescopic assembly 200.

[0061] By rotating the rotating shaft 201, the two wedge blocks 202 at the two ends of the rotating shaft 201 extend into or out of the adjustment space at the same speed and displacement distance, which can accurately control the change of the distance between the two supports 100 and adapt to the requirements of rapid installation and disassembly in the narrow space in the rotary cylinder.

[0062] Reference is made to the accompanying drawings Figure 5 、 Figure 8 、 Figure 9 In some embodiments, the screw sleeve 400 is fixed to one end of the wedge block 202 close to the rotating shaft 201, and is used for threadedly connecting the rotating shaft 201; the avoiding groove 500 is arranged in the wedge block 202 and is communicated with the screw sleeve 400, and is used for accommodating the rotating shaft 201 after the rotating shaft 201 passes through the screw sleeve 400.

[0063] Specifically, two fixed screw sleeves 400 are arranged at one end of the two wedge blocks 202 close to the rotating shaft 201, and the screw sleeve 400 has a thread structure matched with the rotating shaft 201 for threadedly connecting, so that the rotating shaft 201 drives the two wedge blocks 202 at the two ends to move close to each other or move away from each other by rotating.

[0064] The form of the screw sleeve 400 should be selected according to the assembly space and connection requirements, including but not limited to the welded screw sleeve 400 structure, the nested screw sleeve 400 structure or the replaceable screw sleeve 400 structure, so as to facilitate maintenance or rapid replacement.

[0065] The screw sleeve 400 should be matched with wear resistance and strength according to the working condition requirements. The material of the screw sleeve 400 includes but is not limited to high-hardness stainless steel, copper alloy or engineering plastic and the like.

[0066] A penetrating avoidance groove 500 is further arranged in the wedge block 202 body, one end of the avoidance groove 500 is communicated with the screw sleeve 400, and the other end extends to the inside of the wedge block 202, so that the protruding part of the rotating shaft member 201 after penetrating the screw sleeve 400 can be accommodated in the inside of the wedge block 202, thereby avoiding the interference or space limitation problem of the wedge block 202 to the rotating shaft member 201 after penetrating the screw sleeve 400.

[0067] By arranging the screw sleeve 400, reliable mechanical connection is provided to prevent thread slipping or misplacement; by arranging the avoidance groove 500, the jamming and limiting problem of the rotating shaft member 201 during movement is avoided, the relative displacement amount of the rotating shaft member 201 and the wedge block 202 is increased, and thus the adjustment amount of the supporting force is increased; the screw sleeve 400 and the avoidance groove 500 are matched to optimize the internal space utilization, and significantly reduce the overall size of the telescopic assembly 200 in the axial direction, thereby adapting to the requirement of narrow installation environment.

[0068] Reference is made to the accompanying drawings Figure 1 , Figure 2 , Figure 9 In some embodiments, the preset interval in the adjustment space gradually decreases from one end close to the shaft center of the rotary cylinder to the other end, and the outer diameter of the wedge block 202 close to one end of the rotating shaft member 201 gradually decreases to the other end.

[0069] Specifically, when the rotating shaft member 201 drives the wedge block 202 to advance into the adjustment space, the preset interval in the adjustment space is arranged to gradually decrease, and the outer diameter of the wedge block 202 is correspondingly arranged to also gradually decrease to form a bevel fitting structure, which facilitates positioning when the telescopic assembly 200 is installed, and forms a gradually increasing fitting and pressing effect during the process of the wedge block 202 extending into the adjustment space.

[0070] By arranging the adjustment space as a two-bevel clamping cavity with one end wide and the other end narrow, and matching the wedge block 202 with a conical frustum shape, the wedge block 202 can form a gradually increasing wedging force after being inserted into the adjustment space, so that the expansion force between the two supporting members 100 can be transmitted to the inner wall of the rotary cylinder in a stable and linearly increasing manner, effectively dispersing the local pressure, reducing the damage risk to the inner wall of the rotary cylinder, and improving the support stability and the docking precision of the two rotary cylinders.

[0071] In addition, the taper matching between the wedge block 202 and the adjustment space also realizes a self-locking function, which can effectively prevent the telescopic assembly 200 from loosening or slipping due to vibration or impact in the supporting state, and improve the structural reliability.

[0072] Reference is made to the accompanying drawings Figure 1 ,Figure 2 、 Figure 9 In some embodiments, the length of the wedge 202 along the axis of the rotating shaft 201 is less than the thickness of the support 100 along the radial direction of the rotary cylinder.

[0073] Specifically, the length of the wedge 202 along the axis of the rotating shaft 201 is less than the thickness of the support 100 along the radial direction of the rotary cylinder, so that the wedge 202 can be fully inserted into the adjustment space.

[0074] The length of the wedge 202 is less than the thickness of the support 100, so that after the supporting or releasing action is completed, the wedge 202 does not interfere with the inner wall of the rotary cylinder or the operation space due to excessive insertion or withdrawal, avoiding the bumping, wear or operation obstacle caused by the wedge 202 protruding out of the adjustment space.

[0075] In addition, based on the taper matching relationship between the wedge 202 and the adjustment space, and the length of the wedge 202 along the radial direction of the rotary cylinder is less than the length of the adjustment space, the stroke of the wedge 202 in the adjustment space is increased.

[0076] Until the wedge 202 moves to the position closest to the inner wall of the rotary cylinder, the two wedges 202 cooperate with the two supports 100 to form a circle at the end close to the inner wall of the rotary cylinder, so that the wedge 202 can provide more stable supporting force to the rotary cylinder through the support 100.

[0077] Referring to the accompanying drawings Figure 1 、 Figure 2 、 Figure 4 、 Figure 6 、 Figure 8 In some embodiments, the adjustment member 600 is fixed between the two ends of the rotating shaft 201, and the adjustment member 600 is used to drive the rotating shaft 201 to rotate along its axis.

[0078] Specifically, the adjustment member 600 includes but is not limited to a knob, a hexagonal wrench interface, a gear disc, a nut seat or other special tool interfaces, and the adjustment member 600 is fixed between the two ends of the rotating shaft 201 and located in the operation space formed by the two supports 100, so as to facilitate the operator to adjust the rotating shaft 201 before and after welding.

[0079] The driving mode of the adjustment member 600 includes but is not limited to manual driving, remote control motor driving, programmable servo mechanism or pneumatic device driving to meet special operation requirements.

[0080] Through the rotation of the adjustment member 600, the rotating shaft 201 is driven to rotate around its axis, and then the wedge 202 threadedly connected with the rotating shaft 201 is axially displaced, so as to realize the increase or decrease of the distance between the supports 100, and complete the application or release of the supporting force.

[0081] The operator does not need to directly contact the two ends of the rotating shaft, and can accurately control the rotating angle of the rotating shaft 201 in the operation space by operating the adjusting member 600, so as to realize the rapid adjustment of the supporting state of the supporting member 100. Embodiment two Reference drawings Figure 6 、 Figure 11 、 Figure 12 The application also provides a method for using the butt joint supporting device of the rotating cylinder in a narrow space. The butt joint supporting device of the rotating cylinder in a narrow space in the above embodiment one is used to support when the open ends of the two rotating cylinders are aligned and welded.

[0083] The method for using the butt joint supporting device of the rotating cylinder in a narrow space includes the following steps: In the pre-installation step S1, the two supporting members 100 are relatively arranged in one of the rotating cylinders, and the two supporting members 100 are partially extended out of the rotating cylinder along the axial direction of the rotating cylinder, and then the two ends of the telescopic assembly 200 are respectively extended into the two adjusting spaces between the two supporting members 100, so that the outer walls of the two supporting members 100 are pre-tightened against the inner walls of the rotating cylinder; In the butt joint supporting step S2, the other rotating cylinder is sleeved on the partially extended part of the two supporting members 100, and the two ends of the telescopic assembly 200 are moved away from each other to further extend into the two adjusting spaces, so that the outer walls of the two supporting members 100 are simultaneously tightly attached to the inner walls of the adjacent two parts of the two rotating cylinders; In the welding and dismounting step S3, after the welding work at the joint of the outer walls of the two rotating cylinders is completed, the two ends of the telescopic assembly 200 are moved close to each other to extend out of the two adjusting spaces, so that the two supporting members 100 are separated from the inner walls of the adjacent two parts of the two rotating cylinders, and then the telescopic assembly 200 and the two supporting members 100 are taken out through the open end of any rotating cylinder to complete the dismounting.

[0084] Reference drawings Figure 6 、 Figure 7 、 Figure 11 Specifically, the two rotating cylinders include a first rotating cylinder 700 and a second rotating cylinder 800.

[0085] In the pre-installation step S1, the two supporting members 100 are relatively arranged in the first rotating cylinder 700 near one end of the welding position, and along the axial direction of the first rotating cylinder 700, the two supporting members 100 are partially extended out of the first rotating cylinder 700, which are used to be extended into the second rotating cylinder 800 near one end of the welding position in the butt joint supporting step S2.

[0086] After the two support members 100 are installed on the rear of the first rotary cylinder 700, the telescopic assembly 200 is installed between the two support members 100, and the two wedge blocks 202 at the two ends of the rotating shaft member 201 are respectively extended into the two adjusting spaces to provide support force to the two support members 100, so that the outer wall of the two support members 100 is pre-tightened against the inner wall of the first rotary cylinder 700.

[0087] In the butt joint supporting step S2, the second rotary cylinder 800 is sleeved on the locally extended part of the two support members 100, so that the first rotary cylinder 700 and the second rotary cylinder 800 are initially butt jointed through the support members 100.

[0088] The operator uses a wrench tool to extend into the rotary cylinder to adjust the rotating shaft member 201 from the opening end of the first rotary cylinder 700 away from the second rotary cylinder 800, or from the opening end of the second rotary cylinder 800 away from the first rotary cylinder 700, and the rotating shaft member 201 is rotated to drive the two wedge blocks 202 to simultaneously extend into the two adjusting spaces in the direction away from each other, the support force received by the two support members 100 gradually increases, and the outer wall of the two support members 100 is simultaneously tightly attached to the adjacent two inner walls of the two rotary cylinders, so that the axis of the first rotary cylinder 700 and the second rotary cylinder 800 is consistent and the relative position is stable.

[0089] In the welding and dismounting step S3, the operator uses a welding gun tool to weld the first rotary cylinder 700 and the second rotary cylinder 800 at the butt joint position, and then performs heat treatment on the first rotary cylinder 700, the second rotary cylinder 800 and the entire butt joint supporting device to eliminate welding stress and reduce welding deformation.

[0090] After the above welding work is completed, the operator uses a wrench tool to extend into the rotary cylinder to adjust the rotating shaft member 201 through any opening end of the rotary cylinder, and the rotating shaft member 201 is rotated to drive the two wedge blocks 202 to simultaneously extend out of the two adjusting spaces in the direction close to each other, so that the support force received by the two support members 100 gradually decreases.

[0091] Until the two support members 100 are separated from the adjacent two inner walls of the two rotary cylinders, the operator takes out the telescopic assembly 200 and the two support members 100 through any opening end of the rotary cylinder respectively, so that the dismounting is completed.

[0092] Reference is made to the accompanying drawings Figures 6 to 12 It should be noted that when three or more rotary cylinders need to be welded, i.e. including a third rotary cylinder 900 or more rotary cylinders, only the above steps need to be repeated to support different welding positions, and the operator should select the opening end of the rotary cylinder closest to the welding position to install and dismount the butt joint supporting device according to the actual situation.

[0093] The application provides a butt joint support device for narrow space rotary cylinders and a use method thereof, which can solve the problem that a traditional support cannot be installed in a rotary cylinder by independently installing two support members 100 and a telescopic assembly 200 in the narrow space in the rotary cylinder and then combining them; the two support members 100 can simultaneously provide support force to the adjacent inner walls of the two rotary cylinders, so that the axial lines of the two rotary cylinders are consistent and the relative positions are stable after butt joint, the butt joint precision and the support stability are improved; the relative movement of the two ends of the telescopic assembly 200 can be used to adjust the preset distance between the two support members 100, so that the support device can be adapted to rotary cylinders with different inner diameters, the adjustment operation in the narrow space in the rotary cylinder is facilitated, and the versatility and practicality of the whole butt joint support device are improved; the arc surface structure that the support member 100 is attached to the inner wall of the rotary cylinder can effectively improve the support stability and the attachment precision of the support member 100, avoid the problems of support deflection or sliding caused by local contact, and realize uniform distribution of the support force, reduce structural stress concentration, and enhance the service life and reliability of the butt joint support device; the accommodation groove 300 with the maximum opening end facing the welding seam position arranged on the outer wall of the support member 100 can effectively improve the adaptability of the whole butt joint support device to the welding operation of the rotary cylinder, provide strong and stable support, and avoid the problems of poor forming and adhesion of the rotary cylinder at the back position of welding; the rotation of the shaft member 201 can be used to synchronously drive the two wedges 202 to adjust, so that the efficiency and uniformity of the force applied to or released from the support member 100 are greatly improved; the avoidance groove 500 can be used to avoid the problems of jamming and limiting of the shaft member 201 during movement, improve the relative displacement amount of the shaft member 201 and the wedge 202, and thus increase the adjustment amount of the support force; the cooperation of the screw sleeve 400 and the avoidance groove 500 optimizes the utilization of the internal space, significantly reduces the overall size of the telescopic assembly 200 in the axial direction, and adapts to the requirements of narrow installation environment; the tapered cone cavity with one end wide and the other end narrow is arranged, and the wedge 202 with a conical shape is arranged, so that the wedge 202 can form gradually increasing wedge force after being inserted into the adjustment space, the expansion force between the two support members 100 can be transmitted to the inner wall of the rotary cylinder in a stable and linearly increasing manner, the local pressure is effectively dispersed, the damage risk of the inner wall of the rotary cylinder is reduced, and the support stability and the butt joint precision of the two rotary cylinders are improved.

[0094] Finally, it should be noted that: the embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts of each embodiment can be referred to.

[0095] The above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that the specific implementation of the present application can be modified or equivalent replacements can be made to some technical features without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed.

Claims

1. A docking support device for a rotating cylinder in a confined space, used for supporting the two rotating cylinders during the alignment and welding of their open ends, characterized in that, The docking support device includes: The two support members are disposed opposite each other in the rotating cylinder. The two ends of the two support members are separated by a preset distance to form two adjustment spaces. The support members are located at the joint position of the two rotating cylinders, and the outer wall of the support member abuts against the inner walls of two adjacent parts of the two rotating cylinders. A telescopic component is disposed between the two support members. The telescopic component is used to move its two ends away from or closer to each other to extend into or out of the two adjustment spaces, thereby increasing or decreasing the preset distance between the two, and correspondingly enhancing or releasing the supporting force of the two support members on the two rotating cylinders.

2. The docking support device for a rotating cylinder in a confined space according to claim 1, characterized in that, Also includes: A clearance groove is provided around the outer wall of the support member, with the largest opening end of the clearance groove facing the joint position of the two rotating cylinders.

3. The docking support device for a rotating cylinder in a confined space according to claim 1, characterized in that, The telescopic component includes: A pivot member is disposed between the two support members; Two wedges are respectively disposed at both ends of the two rotating shafts, one of the wedges is threadedly connected to one end of the rotating shaft, and the other wedge is rotatably disposed at the other end of the rotating shaft; When the rotating shaft rotates, the wedges threadedly connected to the rotating shaft are displaced relative to each other along the axial direction of the rotating shaft, so that the two wedges simultaneously extend into or out of the two adjustment spaces.

4. The docking support device for a rotating cylinder in a confined space according to claim 3, characterized in that, The two wedges are respectively threaded to both ends of the two rotating shafts, and the threads on the two wedges are in opposite directions so that the two wedges simultaneously extend into or out of the two adjustment spaces when the rotating shafts rotate.

5. A docking support device for a rotating cylinder in a confined space according to claim 3 or 4, characterized in that, Also includes: A threaded sleeve is fixed to one end of the wedge block near the rotating shaft and is used to thread the rotating shaft. A clearance groove, which passes through the wedge and communicates with the threaded sleeve, is used to accommodate the rotating shaft after it passes through the threaded sleeve.

6. The docking support device for a rotating cylinder in a confined space according to claim 3, characterized in that, The preset spacing within the adjustment space gradually decreases from one end near the axis of the rotating cylinder to the other end, and the outer radial distance of the wedge block from one end near the rotating shaft gradually decreases from the other end.

7. The docking support device for a rotating cylinder in a confined space according to claim 6, characterized in that, The length of the wedge along the axial direction of the rotating shaft is less than the thickness of the support along the radial direction of the rotating cylinder.

8. The docking support device for a rotating cylinder in a confined space according to claim 3, characterized in that, Also includes: An adjusting element is fixed between the two ends of the rotating shaft, and the adjusting element is used to drive the rotating shaft to rotate along its axis.

9. The docking support device for a rotating cylinder in a confined space according to claim 1, characterized in that, The two ends of the support member that are relatively close to and far from the rotating cylinder are arc surfaces. The arc surface of the support member that is close to the rotating cylinder fits against the inner wall of the rotating cylinder. The two arc surfaces of the support member that are far from the rotating cylinder enclose an operating space, which is used for loading and unloading the telescopic assembly.

10. A method of using a docking support device for a rotating cylinder in a confined space, used for supporting the cylinder during the alignment and welding of the open ends of the two rotating cylinders, characterized in that... The method of using the support device includes: In the pre-installation step, two support members are installed opposite to each other in one of the rotary cylinders, and the two support members are partially extended along the axial direction through the open end of the rotary cylinder. Then, the two ends of the telescopic assembly are respectively inserted into the two adjustment spaces between the two support members so that the outer walls of the two support members are pre-pressed against the inner wall of the rotary cylinder. In the docking support step, another rotary cylinder is fitted over the partially protruding part of the two support members. By moving the two ends of the telescopic component away from each other to continue extending into the two adjustment spaces, the outer walls of the two support members simultaneously press against the inner walls of the two adjacent parts of the rotary cylinder. In the welding and disassembly steps, after welding is completed at the joint of the outer walls of the two rotary cylinders, the two ends of the telescopic component are brought close to each other to extend out of the two adjustment spaces, thereby causing the two support members to detach from the inner walls of the two adjacent parts of the two rotary cylinders. Then, the telescopic component and the two support members are taken out through the open end of either rotary cylinder to complete the disassembly.

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