Large universal positioning support

Abstract

The present invention discloses a large-scale universal positioning support, comprising: a lifting and rotating base, a linear telescopic assembly fixed to the top of the lifting and rotating base, two sets of quick-change joint assemblies quickly connected to the two ends of the linear telescopic assembly, two sets of pressure detection wheel assemblies and an operation control cabinet. The lifting and rotating base is set to be lifted and lowered in the height direction and rotated in the circumferential direction. The linear telescopic assembly is set to be synchronously telescopic at both ends along its length direction. The quick-change joint assembly is used for quick connection with a ring accessory, or quick connection with a symmetrical accessory. The two sets of pressure detection wheel assemblies are respectively pressed against the inner ring surface or the symmetrical two side walls to display whether the roundness or symmetry is qualified through the measured pressure changes during the rotation or sliding along the symmetry line. The positioning support of the present invention is simple in operations such as positioning, welding, and testing, and can also improve the riveting positioning accuracy of the two sets of symmetrically arranged accessories. At the same time, since the support positioning of the accessories is maintained during welding, the welding deformation can also be effectively controlled.

Description

Technical Field

[0001] The present invention relates to the field of large-scale positioning supports, in particular to a large-scale universal positioning support. Background Art

[0002] At present, the marking and point finding method is usually adopted for positioning welding of large component accessories. This method is to add process support between the two accessories to reduce the influence of welding deformation on relative position accuracy through process support. The disadvantage is that positioning and support are implemented separately. On the one hand, the operation is more complicated and the positioning accuracy is low; on the other hand, the process support used is a special support with a low degree of commonality.

[0003] For the roundness detection of ring parts, the circumferential point measurement method is mainly used; for the symmetry inspection of weighing parts, the point measurement method along the length direction is mainly used. In both cases, the point measurement method is used for inspection. On the one hand, there is a large error in the point measurement, and on the other hand, the point measurement workload is large and the labor intensity is high. In addition, the ring seam welding mainly adopts the manual welding method of the manual overlap platform. This method has a large workload, high labor intensity, and low production efficiency. Based on the above situation, a large universal positioning support is designed, which can not only rivet and weld large ring accessories, ring welding, ring roundness inspection, but also rivet and weld large symmetrical parts accessories and symmetry inspection. It can effectively solve the above problems, further improve product quality and shorten product production cycle.

[0004] Research on large-scale universal positioning supports currently focuses primarily on small components and general telescopic tools. Limited research has been conducted on universal support devices for large ring accessory positioning welding, ring roundness testing, ring seam welding, and symmetrical accessory positioning welding and symmetry testing. Large components are primarily large structures, and conventional telescopic support structures are difficult to meet their positioning support requirements. This is especially true for workpieces requiring high welding symmetry. Existing methods are difficult to meet these requirements, are complex to operate, and are time-consuming, without guaranteeing product quality. Summary of the Invention

[0005] The present invention provides a large-scale universal positioning support to solve the technical problems of complex operation, low positioning accuracy, high labor intensity and low production efficiency in the existing large-scale component welding inspection.

[0006] The technical solution adopted in the present invention is as follows:

[0007] A large universal positioning support, comprising: a lifting and rotating base, a linear telescopic assembly fixed to the top of the lifting and rotating base, two sets of quick-change joint assemblies quickly connected to the two ends of the linear telescopic assembly, two sets of pressure detection wheel assemblies and an operation control cabinet, the lifting and rotating base, the linear telescopic assembly and the two sets of pressure detection wheel assemblies are electrically connected to the operation control cabinet respectively; the lifting and rotating base is used for positioning and supporting at the rotation center of a large ring part or the symmetry center of a large symmetrical part, and the lifting and rotating base is set to be lifted in the height direction and rotated in the circumferential direction; the linear telescopic assembly is set to be telescopic synchronously at both ends along its length direction, and the telescopic ends are about The rotation centerline of the lifting and rotating base is set symmetrically; the quick-change joint assembly is used to quickly connect with the ring accessories to be welded to the large ring part, or to quickly connect with the symmetrical part accessories to be welded to the large symmetrical part; the two sets of pressure detection wheel assemblies are used to quickly connect with the two sets of quick-change joint assemblies respectively, so as to be used to respectively press against the inner ring surface of the large ring part, and display whether the roundness of the inner ring surface is qualified through the measured pressure changes during the rotation of the lifting and rotating base, or to respectively press against the symmetrical two side walls of the large symmetrical part, and display whether the symmetry of the large symmetrical part is qualified through the measured pressure changes during the sliding of the lifting and rotating base along the symmetry line.

[0008] Furthermore, the linear telescopic assembly includes a fixed joint assembly that serves as an installation support, two groups of telescopic joint assemblies and a synchronous drive assembly for driving the two groups of telescopic joint assemblies to move synchronously, and the synchronous drive assembly is electrically connected to the operation control cabinet; the fixed joint assembly is hollow tubular and is symmetrically fixed to the top of the lifting and rotating base about the rotation center line of the lifting and rotating base; the two groups of telescopic joint assemblies are symmetrically installed at both ends of the fixed joint assembly; the synchronous drive assembly is fixed on the fixed joint assembly and is respectively connected to the inner extending ends of the two groups of telescopic joint assemblies, so as to drive the two groups of telescopic joint assemblies to slide synchronously along the axis of the fixed joint assembly.

[0009] Furthermore, the fixed joint assembly includes a hollow tubular sleeve, an intermediate guide member arranged on the wall surfaces at both ends of the sleeve, an end guide member arranged in the two ends of the sleeve, a bearing fixing seat fixed in the sleeve, and a rotary connecting member fixed in the middle of the sleeve; the rotary connecting member is fixed to the top end of the lifting rotary base to make the sleeve symmetrical about the rotation center line of the lifting rotary base; the telescopic joint assembly is sequentially passed through the end guide member and the intermediate guide member and then slid into the sleeve.

[0010] Furthermore, the telescopic joint assembly includes a hollow tubular sleeve, a threaded block fixed in one end of the sleeve, a driving screw threaded through the threaded block, and a bearing assembly fixed on the extending end of the sleeve extending outward from the driving screw; the extending end of the driving screw is axially inserted into the sleeve from the end of the sleeve, and the bearing assembly is installed on the bearing fixing seat at the corresponding end; the sleeve is provided with one end of the driving screw located in the sleeve.

[0011] Furthermore, the telescopic joint assembly also includes a guide rod mounting seat fixed on the protruding end of the sleeve, and a plurality of guide rods for guiding the sliding of the sleeve. The plurality of guide rods are arranged at intervals along the circumference of the sleeve, and one end of each guide rod is fixed to the guide rod mounting seat, and the other opposite end extends along the axial direction of the sleeve; the fixed joint assembly also includes a plurality of groups of guide sleeve components arranged on the outer wall surfaces of both ends of the sleeve, and the guide rods slide through the plurality of groups of guide sleeve components at the corresponding ends in turn.

[0012] Furthermore, the synchronous drive assembly includes a driving unit and a mounting support supported at intervals on the outer wall of the casing, a pulley shaft rotatably mounted on the mounting support, a connecting flange group connected between the pulley shaft and the output shaft of the driving unit, and two sets of pulley components; each set of pulley components is installed between the pulley shaft and the corresponding driving screw, so as to transmit the rotational power of the driving unit to the two sets of pulley components respectively after passing through the pulley shaft, so as to synchronously drive the two driving screws to rotate; the mounting support is also covered with a bearing assembly shield fixed on the outer wall of the casing, and the driving unit is also covered with a motor shield fixed on the outer wall of the casing.

[0013] Furthermore, the linear telescopic assembly also includes two sets of displacement monitors electrically connected to the operation control cabinet respectively. The two sets of displacement monitors are respectively arranged at both ends of the sleeve to monitor the sliding distance of the telescopic joint assembly at the corresponding end relative to the sleeve.

[0014] Furthermore, the quick-change joint assembly includes a first connecting pipe and a connecting flange fixed to the end of the first connecting pipe. After the first connecting pipe is inserted into the sleeve of the telescopic joint assembly, it is quickly connected to the sleeve by a pin passing through the two; the pressure detection wheel assembly includes a second connecting pipe, a wheel bracket fixed to the end of the second connecting pipe, a wheel axle rotatably mounted on the wheel bracket, a detection wheel fixed on the outer circle of the wheel axle, and a pressure sensor fixed in the detection wheel, and the pressure sensor is electrically connected to the operation control cabinet; the second connecting pipe is inserted into the first connecting pipe and is quickly connected to the quick-change joint assembly through a pin.

[0015] Furthermore, the lifting and rotating base includes a support frame, a rotating member fixed to the top of the support frame, and multiple groups of telescopic legs supported at the bottom of the support frame, and the rotating member and the telescopic legs are electrically connected to the operation control cabinet respectively; the linear telescopic assembly is fixed to the top of the rotating member symmetrically about the rotation center line of the rotating member; the multiple groups of telescopic legs are vertically arranged and telescopically arranged along the height direction, and the upper end of each telescopic leg is fixedly connected to the support frame, and the relative lower end is rollingly supported on the ground.

[0016] Furthermore, the telescopic support leg includes an inner tube and an outer tube that are arranged in an inner and outer manner, a telescopic electric push rod axially fixed in the outer tube, and a synchronous steering wheel fixed to the lower end of the outer tube. The telescopic electric push rod is electrically connected to the operation control cabinet; the upper end of the telescopic electric push rod is connected to the lower end of the inner tube, and the upper end of the inner tube is fixedly connected to the lower surface of the support frame.

[0017] The present invention has the following beneficial effects:

[0018] The present invention provides a large-scale universal positioning support. A universal positioning support is designed for large components, such as large rings and large symmetrical parts, to meet the welding and measurement needs of large components. Compared with traditional positioning support methods, its positioning and support are integrated, so the positioning, welding, detection and other operations are simple, which can shorten the riveting and welding positioning time, improve work efficiency, improve product quality and shorten the product production cycle; on the other hand, when inspecting the roundness and symmetry, there is no need to take point measurements, and it can also be operated by connecting to an automatic welding machine head, so not only the measurement accuracy is high, but also the workload of workers can be greatly reduced, thereby reducing labor intensity and improving work efficiency; in addition, the large-scale universal positioning support of the present invention integrates the positioning riveting welding of large rings and large symmetrical parts, the girth welding and roundness detection of large rings, and the symmetry detection of large symmetrical parts. It is equal to one body, which can realize fast and accurate riveting and positioning of large component accessories, fast and accurate detection, greatly improving production efficiency and product quality, and has a high degree of versatility, which can effectively reduce production costs; in addition, the design of a synchronous action structure, that is, a linear telescopic component, on the one hand, can meet the use requirements of workpieces with low symmetry requirements, improve the riveting positioning accuracy of two sets of symmetrically set accessories, and at the same time, since the support and positioning of the accessories are maintained during welding, the welding deformation can also be effectively controlled. On the other hand, for workpieces with high symmetry requirements, the synchronous drive can ensure that both ends are in contact with the welded component at the same time, improve the symmetry accuracy, control welding deformation, and improve product quality. The setting of the quick-change joint assembly 7 can switch the matching joint according to the different workpieces, so that the workpiece can be assembled with the device, shortening the assembly time and improving work efficiency.

[0019] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of an application example 1 of a large-scale universal positioning support according to a preferred embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of a second example of a large-scale universal positioning support application according to a preferred embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the third example of application of a large-scale universal positioning support according to a preferred embodiment of the present invention;

[0024] Figure 4 2 is a schematic diagram of a fourth example of a large-scale universal positioning support application according to a preferred embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of a fifth example of a large-scale universal positioning support application according to a preferred embodiment of the present invention;

[0026] Figure 6 This is a schematic diagram of switching of a large-scale universal positioning support function module according to a preferred embodiment of the present invention;

[0027] Figure 7 This is a schematic diagram of a large universal positioning support structure according to a preferred embodiment of the present invention;

[0028] Figure 8 yes Figure 7 AA-direction cross-sectional structural diagram;

[0029] Figure 9 yes Figure 7 Schematic diagram of the spatial structure of the middle fixed node assembly;

[0030] Figure 10 yes Figure 9 AA-direction cross-sectional structural diagram;

[0031] Figure 11 yes Figure 7 Schematic diagram of the spatial structure of the middle expansion joint assembly;

[0032] Figure 12 yes Figure 11 AA-direction cross-sectional structural diagram;

[0033] Figure 13 yes Figure 7 A schematic diagram of the cross-sectional main view of the synchronous drive assembly;

[0034] Figure 14 yes Figure 7 Schematic diagram of the structure of the displacement monitor;

[0035] Figure 15 yes Figure 7 Schematic diagram of the spatial structure of the mid-lift rotary base;

[0036] Figure 16 yes Figure 15 Schematic diagram of the cross-sectional main structure of the middle telescopic leg;

[0037] Figure 17 yes Figure 7 Schematic diagram of the spatial structure of the quick-change joint assembly;

[0038] Figure 18 yes Figure 6 Schematic diagram of the spatial structure of the medium pressure detection wheel assembly.

[0039] Legend

[0040] 10. Lifting and slewing base; 11. Support frame; 12. Slewing member; 121. Slewing bearing assembly; 122. Slewing drive; 13. Telescopic legs; 131. Inner tube; 132. Outer tube; 133. Telescopic electric push rod; 134. Synchronous steering wheel; 2. Linear telescopic assembly; 20. Fixed joint assembly; 21. Sleeve; 22. Intermediate guide member; 23. End guide member; 24. Bearing fixing seat; 25. Slewing connecting member; 26. Guide sleeve member; 27. Lifting lug; 30. Telescopic joint assembly; 31. Sleeve; 32. Threaded block; 33. Drive screw; 34. Bearing assembly; 35. Guide rod mounting seat; 36. Guide rod; 40. Synchronous drive Assembly; 41. Drive unit; 42. Mounting support; 43. Pulley shaft; 44. Connecting flange assembly; 45. Pulley component; 451. First pulley; 452. Second pulley; 453. Synchronous belt; 46. Bearing assembly guard; 47. Motor guard; 50. Displacement monitor; 60. Quick-change connector assembly; 61. First connecting pipe; 62. Connecting flange; 70. Pressure detection wheel assembly; 71. Second connecting pipe; 72. Wheel bracket; 73. Wheel shaft; 74. Detection wheel; 75. Pressure sensor; 80. Operation control cabinet; 91. Large ring; 92. Large symmetrical part; 93. Ring accessories; 94. Symmetrical part accessories; 95. Automatic welding head. DETAILED DESCRIPTION

[0041] The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

[0042] Reference Figure 6-8The preferred embodiment of the present invention provides a large-scale universal positioning support, comprising: a lifting and rotating base 10, a linear telescopic assembly 2 fixed to the top of the lifting and rotating base 10, two sets of quick-change joint assemblies 60 quickly connected to the two ends of the linear telescopic assembly, two sets of pressure detection wheel assemblies 70 and an operation control cabinet 80, wherein the lifting and rotating base 10, the linear telescopic assembly and the two sets of pressure detection wheel assemblies 70 are electrically connected to the operation control cabinet 80 respectively. The lifting and rotating base 10 is used for positioning and supporting at the rotation center of the large ring part 91 or the symmetry center of the large symmetrical part 92, and the lifting and rotating base 10 is set to be lifted and lowered in the height direction and rotated in the circumferential direction. The linear telescopic assembly is set to be telescopic synchronously at both ends along its length direction, and the telescopic ends are symmetrically arranged about the rotation center line of the lifting and rotating base 10. The quick-change joint assembly 60 is used to quickly connect with the ring part accessory 93 to be welded to the large ring part 91, or to quickly connect with the symmetrical part accessory 94 to be welded to the large symmetrical part 92. The two sets of pressure detection wheel assemblies 70 are used to be quickly connected to the two sets of quick-change joint assemblies 60 respectively, so as to be used to respectively press against the inner ring surface of the large ring part 91, and display whether the roundness of the inner ring surface is qualified through the measured pressure changes during the rotation of the lifting and rotating base 10, or to respectively press against the symmetrical two side walls of the large symmetrical part 92, and display whether the symmetry of the large symmetrical part 92 is qualified through the measured pressure changes during the sliding of the lifting and rotating base 10 along the symmetry line.

[0043] like Figure 1 As shown, the first application example of the large-scale universal positioning support of the present invention is to fix the positioning support at the center position of the large ring 91 when in use, and to assemble it with the ring accessory 93 using the quick-change joint assembly 60. When working, the linear telescopic assembly 2 is started, and the two ends of the linear telescopic assembly 2 extend outward synchronously. When the preset position is reached, the linear telescopic assembly 2 is stopped, and the ring accessory 93 is in contact with the inner ring wall of the large ring 91. For height adjustment, the riveting positioning requirements can be achieved by adjusting the vertical height of the lifting and rotating base 10. After the riveting welding is completed, the connection between the quick-change joint assembly 60 and the ring accessory 93 is removed, and the linear telescopic assembly 2 is driven to retract in the reverse direction, thereby completing the riveting welding of the entire ring accessory 93.

[0044] like Figure 2 As shown, the second application example of the large-scale universal positioning support of the present invention is that when in use, the positioning support is fixed to the center position of the large ring part 91, and is assembled with the pressure detection wheel assembly 70 using the quick-change joint assembly 60. When working, the linear telescopic assembly 2 is started, and the two ends of the linear telescopic assembly 2 extend outward synchronously. When the preset position is reached, the linear telescopic assembly 2 is stopped. At this time, the pressure detection wheel assembly 70 contacts the inner ring wall of the large ring part 91, and then the lifting and rotating base 10 is started to rotate one circle. The pressure change data of the pressure detection wheel assembly 70 is used to judge whether the roundness of the large ring part 91 is qualified.

[0045] like Figure 3 As shown, the third application example of the large-scale universal positioning support of the present invention is to fix the positioning support at the center position of the large ring part 91 when in use, and to assemble it with the automatic welding head 95 using the quick-change joint assembly 60. When working, the linear telescopic assembly 2 is started, and the two ends of the linear telescopic assembly 2 are synchronously extended outward. When the preset position is reached, the linear telescopic assembly 2 is stopped. At this time, the automatic welding head 95 contacts the inner ring wall of the large ring part 91, and the gun head is located at the ring weld position. Then the lifting and rotating base 10 is started to rotate one circle, and the automatic welding head 95 automatically welds a circle of ring welds.

[0046] like Figure 4 As shown, the fourth application example of the large-scale universal positioning support of the present invention is to fix the positioning support at the center position of the large symmetrical part 92 when in use, and to assemble it with the symmetrical part accessory 94 using the quick-change joint assembly 60. When working, the linear telescopic assembly 2 is started, and the two ends of the linear telescopic assembly 2 extend outward synchronously. When the preset position is reached, the linear telescopic assembly 2 is stopped. At this time, the symmetrical part accessory 94 contacts the inner wall of the large symmetrical part 92; for the height adjustment, the riveting positioning requirements can be achieved by adjusting the vertical height of the lifting and rotating base 10; after the riveting and welding are completed, the connection between the quick-change joint assembly 60 and the symmetrical part accessory 94 is removed, and the linear telescopic assembly 2 is driven to retract in the reverse direction, thereby completing the riveting and welding of the entire symmetrical part accessory 94.

[0047] like Figure 5 As shown, the fifth application example of the large-scale universal positioning support of the present invention is to fix the positioning support at the center position of the large symmetrical part 92 when in use, and to assemble it with the pressure detection wheel assembly 70 using the quick-change joint assembly 60. When working, the linear telescopic assembly 2 is started, and the two ends of the linear telescopic assembly 2 extend outward synchronously. When the preset position is reached, the linear telescopic assembly 2 is stopped. At this time, the pressure detection wheel assembly 70 contacts the inner wall of the large symmetrical part 92, and then the lifting and rotating base 10 is started to rotate one circle. The pressure change data of the pressure detection wheel assembly 70 is used to judge whether the symmetry of the large symmetrical part 92 is qualified.

[0048] The present invention provides a large-scale universal positioning support. For large components (the inner ring diameter of large ring components is 3 to 6 meters, and the opening of large symmetrical components is 3 to 6 meters), such as large ring components 91 and large symmetrical components 92, a universal positioning support is designed to meet the welding and measurement needs of large components. Compared with traditional positioning support methods, its positioning and support are integrated, so the positioning, welding, detection and other operations are simple, which can shorten the riveting and welding positioning time, improve work efficiency, improve product quality and shorten the product production cycle; on the other hand, when inspecting the roundness and symmetry, there is no need to take point measurements, and it can also be operated by connecting to the automatic welding head 95, so not only the measurement accuracy is high, but also the workload of workers can be greatly reduced, thereby reducing labor intensity and improving work efficiency; in addition, the large-scale universal positioning support of the present invention integrates the positioning riveting welding of large ring components 91 and large symmetrical components 92, the circumferential seam welding of large ring components 91 It is integrated with roundness detection and symmetry detection of large symmetrical parts 92, so that the riveting and positioning of large component accessories can be fast and accurate, and the detection can be fast and accurate, which greatly improves production efficiency and product quality. It is also highly versatile and can effectively reduce production costs. In addition, a synchronous action structure is designed, that is, a linear telescopic component 2. On the one hand, it can meet the use requirements of workpieces that do not require high symmetry, and improve the riveting positioning accuracy of the two sets of symmetrically arranged accessories. At the same time, since the support and positioning of the accessories are maintained during welding, the welding deformation can also be effectively controlled. On the other hand, for workpieces with high symmetry requirements, the synchronous drive can ensure that both ends are in contact with the welded component at the same time, thereby improving the symmetry accuracy, controlling the welding deformation, and improving the product quality. The setting of the quick-change joint assembly 60 can switch the matching joint according to the different workpieces, so that the workpiece can be assembled with the device, shortening the assembly time and improving work efficiency.

[0049] Alternatively, as Figure 7 and Figure 8 As shown, the linear telescopic assembly includes a fixed joint assembly 20 that serves as a mounting support, two sets of telescopic joint assemblies 30, and a synchronous drive assembly 40 for driving the two sets of telescopic joint assemblies 30 to move synchronously. The synchronous drive assembly 40 is electrically connected to the operation control cabinet 80. The fixed joint assembly 20 is hollow and tubular and is fixed to the top of the lifting and rotating base 10 symmetrically about the rotation centerline of the lifting and rotating base 10. The two sets of telescopic joint assemblies 30 are symmetrically installed at both ends of the fixed joint assembly 20. The synchronous drive assembly 40 is fixed to the fixed joint assembly 20 and is respectively connected to the inner extending ends of the two sets of telescopic joint assemblies 30 to drive the two sets of telescopic joint assemblies 30 to slide synchronously along the axis of the fixed joint assembly 20.

[0050] In this option, if Figure 9 and Figure 10As shown, the fixed joint assembly 20 includes a hollow tubular sleeve 21, an intermediate guide member 22 arranged on the wall surfaces at both ends of the sleeve 21, an end guide member 23 arranged in the two ends of the sleeve 21, a bearing fixing seat 24 fixed in the sleeve 21, and a rotary connecting member 25 fixed in the middle of the sleeve 21; in this optional scheme, the intermediate guide member 22 includes four intermediate guide blocks arranged along the circumference of the sleeve 21, and the four intermediate guide blocks are respectively fixed to the outer wall surface of the sleeve 21, and partially extend into the sleeve 21 to enclose a channel with a square cross-section, thereby guiding the sliding of the telescopic joint assembly 30; similarly, the end guide member 23 is a square tube type, fixedly inserted into the port of the sleeve 21, and is also used to guide the sliding of the telescopic joint assembly 30. The swivel connection member 25 is fixed to the top of the lifting swivel base 10 to ensure that the sleeve 21 is symmetrically arranged about the rotation centerline of the lifting swivel base 10. In this optional solution, the swivel connection member 25 includes a swivel connection flange fixed to the lifting swivel base 10 and flange reinforcement ribs connected between the swivel connection flange and the sleeve 21 to enhance strength. The telescopic joint assembly 30 is inserted through the end guide members 23 and the intermediate guide member 22 and then slidably installed into the sleeve 21. Furthermore, the fixed joint assembly 20 includes lifting ears 27 fixed to the outer wall surfaces of the sleeve 21 at both ends to facilitate lifting.

[0051] In this option, if Figure 11 and Figure 12 As shown, the telescopic joint assembly 30 includes a hollow tubular sleeve 31, a threaded block 32 fixed in one end of the sleeve 31, a drive screw 33 threadedly inserted into the threaded block 32, and a bearing assembly 34 fixed to the protruding end of the sleeve 31 where the drive screw 33 protrudes. The protruding end of the drive screw 33 is axially inserted into the sleeve 21 from the end of the sleeve 21, and the bearing assembly 34 is mounted on the bearing fixing seat 24 at the corresponding end. One end of the sleeve 31 provided with the drive screw 33 is located in the sleeve 21. During operation, the synchronous drive assembly 40 drives the drive screw 33 to rotate, and then through the cooperation of the drive screw 33 and the threaded block 32, the drive sleeve 31 slides in the sleeve 21, thereby realizing the telescopic movement of both ends of the telescopic joint assembly 30.

[0052] Preferably, if Figure 9-12As shown, the telescopic joint assembly 30 also includes a guide rod mounting seat 35 fixed to the protruding end of the sleeve 31, and a plurality of guide rods 36 for guiding the sliding of the sleeve 31. The plurality of guide rods 36 are arranged at intervals along the circumference of the sleeve 31, and one end of each guide rod 36 is fixed to the guide rod mounting seat 35, and the other end thereof extends axially along the sleeve 31. The fixed joint assembly 20 also includes a plurality of groups of guide sleeve components 26 provided on the outer wall surfaces at both ends of the sleeve 21. The guide rods 36 are sequentially slidably inserted into the plurality of groups of guide sleeve components 26 at the corresponding ends. In this preferred embodiment, the guide sleeve components 26 include two mounting flanges fixed at intervals on the outer wall surface of the sleeve 21, and a guide sleeve connected between the two mounting flanges. The guide rods 36 are sequentially inserted into the plurality of guide sleeves to guide the sliding of the sleeve 31.

[0053] Alternatively, as Figure 8 and Figure 13 As shown, the synchronous drive assembly 40 includes a drive unit 41 and a mounting bracket 42 spaced apart and supported on the outer wall of the sleeve 21, a pulley shaft 43 rotatably mounted on the mounting bracket 42, a connecting flange assembly 44 connected between the pulley shaft 43 and the output shaft of the drive unit 41, and two sets of pulley components 45. Each set of pulley components 45 is mounted between the pulley shaft 43 and the corresponding drive screw 33, so as to transmit the rotational power of the drive unit 41 to the two sets of pulley components 45 through the pulley shaft 43, thereby synchronously driving the two drive screws 33 to rotate. In this optional solution, each set of pulley components 45 includes a first pulley 451 mounted on the outer circumference of the pulley shaft 43, a second pulley 452 mounted on the outer circumference of the corresponding drive screw 33, and a synchronous belt 453 wrapped around the outer circumferences of the first pulley 451 and the second pulley 452. The mounting bracket 42 is also covered by a bearing assembly shield 46 fixed to the outer wall of the sleeve 21, and the drive unit 41 is also covered by a motor shield 47 fixed to the outer wall of the sleeve 21. During operation, the drive unit 41, that is, the stepper motor with a reducer, is started, and its output shaft drives the pulley shaft 43 to rotate through the connecting flange assembly 44. When the pulley shaft 43 rotates, the first pulley 451, the synchronous belt 453 and the second pulley 452 thereon ultimately drive the corresponding drive screw 33 to rotate. Then, through the cooperation of the drive screw 33 and the threaded block 32, the drive sleeve 31 slides in the sleeve 21, thereby realizing the extension and retraction of the two ends of the telescopic joint assembly 30. The synchronous drive assembly 40 has a simple structure and a simple driving process.

[0054] Alternatively, as Figure 8 and Figure 14As shown, the linear telescopic assembly also includes two sets of displacement monitors 50, each electrically connected to an operation control cabinet 80. These two sets of displacement monitors 50 are located at either end of the sleeve 21 to monitor the sliding distance of the corresponding telescopic joint assembly 30 relative to the sleeve 21. During operation, the displacement monitors 50 monitor the distance between the mounting flange on which they are mounted and the guide rod mounting base 35 of the telescopic joint assembly 30 in real time, thereby determining the telescopic distance. This distance is used to determine whether the workpiece is in contact with the welded component. When the predetermined position is reached, the drive unit 41 stops rotating, and the drive screw 33 enters a self-locking state, achieving the purpose of positioning and support.

[0055] Alternatively, as Figure 17 As shown, the quick-change joint assembly 60 includes a first connecting pipe 61 and a connecting flange 62 fixed to the end of the first connecting pipe 61. After the first connecting pipe 61 is inserted into the sleeve 31 of the telescopic joint assembly 30, it is quickly connected to the sleeve 31 by passing a pin through the two. The quick-change joint assembly 60 facilitates rapid replacement of joints and is suitable for connecting and fixing different types of workpieces.

[0056] Alternatively, as Figure 18 As shown, the pressure detection wheel assembly 70 includes a second connecting tube 71, a wheel bracket 72 fixed to the end of the second connecting tube 71, a wheel axle 73 rotatably mounted on the wheel bracket 72, a detection wheel 74 fixedly mounted on the outer circle of the wheel axle 73, and a pressure sensor 75 fixed in the detection wheel 74. The pressure sensor 75 is electrically connected to the operation control cabinet 80. The second connecting tube 71 is inserted into the first connecting tube 61 and is quickly connected to the quick-change connector assembly 60 through a latch. In this optional solution, the pressure detection wheel assembly 70 is mainly used to detect the roundness of the large ring part 91 and the symmetry of the large symmetrical part 92. It is quickly assembled with the positioning support and can rotate circumferentially under the driving action of the lifting and rotating base 10. The roundness of the inner ring surface of the large ring part 91 meets the requirements is judged according to the value of the pressure sensor 75 inside the detection wheel 74. It can also move in a straight line under the drive of the lifting and rotating base 10 to detect the symmetry of the large symmetrical part 92.

[0057] Alternatively, as Figure 15 As shown, the lifting slewing base 10 includes a support frame 11, a slewing member 12 fixed to the top of the support frame 11, and multiple sets of telescopic legs 13 supported at the bottom of the support frame 11. The slewing member 12 and the telescopic legs 13 are electrically connected to the operation control cabinet 80 respectively. The linear telescopic assembly is fixed to the top of the slewing member 12 symmetrically about the rotation center line of the slewing member 12. Multiple sets of telescopic legs 13 are vertically arranged and telescopically arranged in the height direction, and the upper end of each telescopic leg 13 is fixedly connected to the support frame 11, and the relative lower end is rolled and supported on the ground. In this optional solution, Figure 15As shown, the rotary member 12 includes a rotary bearing assembly 121 and a rotary drive 122 for driving the rotary bearing assembly 121 to rotate; in this optional solution, the rotary member 12 uses an existing conventional structure, such as the heavy-duty rotary drive device WEA25 of Shuangzheng Machinery Co., Ltd., or a rotary drive device with the same function in the existing technology can be used. When working, the rotary drive 122 drives the rotary bearing assembly 121 to rotate.

[0058] In this option, if Figure 16 As shown, the telescopic support leg 13 includes an inner tube 131 and an outer tube 132 arranged in an inner and outer manner, a telescopic electric push rod 133 axially fixed within the outer tube 132, and a synchronous steering wheel 134 fixed to the lower end of the outer tube 132. The telescopic electric push rod 133 is electrically connected to the operation control cabinet 80. The upper end of the telescopic electric push rod 133 is connected to the lower end of the inner tube 131, and the upper end of the inner tube 131 is fixedly connected to the lower surface of the support frame 11. During operation, the telescopic electric push rod 133 is extended and retracted to achieve precise height adjustment of the lifting and rotating base 10, achieving the riveting positioning requirements.

[0059] Alternatively, as Figure 7 As shown, the operation control cabinet 80 includes a control unit and an operation interface. The lifting and rotating base 10, the linear telescopic component 2, the pressure detection wheel component 70, etc. are electrically connected to the control unit to meet various action requirements.

[0060] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A large universal positioning support, characterized in that: include: A lifting and rotating base (10), a linear telescopic assembly (2) fixed to the top of the lifting and rotating base (10), two sets of quick-change joint assemblies (60) quickly connected to both ends of the linear telescopic assembly, two sets of pressure detection wheel assemblies (70) and an operation control cabinet (80), wherein the lifting and rotating base (10), the linear telescopic assembly and the two sets of pressure detection wheel assemblies (70) are electrically connected to the operation control cabinet (80) respectively; The lifting and rotating base (10) is used for positioning and supporting the rotation center of the large ring member (91) or the symmetry center of the large symmetrical member (92), and the lifting and rotating base (10) is set to be lifted in the height direction and rotated in the circumferential direction; The linear telescopic component is synchronously telescopically arranged at both ends along its length direction, and the telescopic ends are symmetrically arranged about the rotation center line of the lifting rotary base (10); The quick-change connector assembly (60) is used for quick connection with a ring component attachment (93) to be welded to a large ring component (91), or for quick connection with a symmetrical component attachment (94) to be welded to a large symmetrical component (92); The two sets of pressure detection wheel assemblies (70) are used to be quickly connected to the two sets of quick-change connector assemblies (60) respectively, so as to be used to respectively press against the inner ring surface of the large ring part (91), and to display whether the roundness of the inner ring surface is qualified by the measured pressure change during the rotation of the lifting and rotating base (10), or to respectively press against the symmetrical two side walls of the large symmetrical part (92), and to display whether the symmetry of the large symmetrical part (92) is qualified by the measured pressure change during the sliding of the lifting and rotating base (10) along the symmetry line.

2. The large universal positioning support according to claim 1, characterized in that: The linear telescopic assembly comprises a fixed joint assembly (20) for installation support, two sets of telescopic joint assemblies (30), and a synchronous drive assembly (40) for driving the two sets of telescopic joint assemblies (30) to move synchronously, wherein the synchronous drive assembly (40) is electrically connected to an operation control cabinet (80); The fixed joint assembly (20) is in the shape of a hollow tube and is fixed to the top of the lifting and rotating base (10) symmetrically with respect to the rotation center line of the lifting and rotating base (10); Two sets of telescopic joint assemblies (30) are symmetrically installed in both ends of the fixed joint assembly (20); The synchronous drive assembly (40) is fixed on the fixed joint assembly (20) and is respectively connected to the inner extension ends of the two sets of telescopic joint assemblies (30) to drive the two sets of telescopic joint assemblies (30) to synchronously slide along the axis of the fixed joint assembly (20).

3. The large universal positioning support according to claim 2, characterized in that: The fixed joint assembly (20) comprises a hollow tubular sleeve (21), an intermediate guide member (22) arranged on the wall surfaces at both ends of the sleeve (21), an end guide member (23) arranged in the two ends of the sleeve (21), a bearing fixing seat (24) fixed in the sleeve (21), and a rotary connecting member (25) fixed in the middle of the sleeve (21); The rotary connecting member (25) is fixed to the top end of the lifting rotary base (10) so as to enable the sleeve (21) to be symmetrically arranged about the rotary center line of the lifting rotary base (10); The telescopic joint assembly (30) is sequentially passed through the end guide member (23) and the middle guide member (22) and then slidably installed into the sleeve (21).

4. The large universal positioning support according to claim 3, characterized in that: The telescopic joint assembly (30) comprises a hollow tubular sleeve (31), a threaded block (32) fixed in one end of the sleeve (31), a driving screw (33) threadedly inserted into the threaded block (32), and a bearing assembly (34) fixed on the end of the driving screw (33) extending outward from the sleeve (31); The extended end of the driving screw (33) is axially inserted into the sleeve (21) from the end of the sleeve (21), and the bearing assembly (34) is mounted on the bearing fixing seat (24) at the corresponding end; The sleeve (31) is provided with one end of a driving screw (33) located in the sleeve (21).

5. The large universal positioning support according to claim 4, characterized in that: The telescopic joint assembly (30) further includes a guide rod mounting seat (35) fixed to the extended end of the sleeve (31), and a plurality of guide rods (36) for guiding the sliding of the sleeve (31), wherein the plurality of guide rods (36) are arranged at intervals along the circumference of the sleeve (31), and one end of each guide rod (36) is fixed to the guide rod mounting seat (35), and the other end thereof extends along the axial direction of the sleeve (31); The fixed joint assembly (20) further comprises a plurality of guide sleeve components (26) arranged on the outer wall surfaces of both ends of the sleeve (21), and the guide rods (36) are sequentially slidably passed through the plurality of guide sleeve components (26) at the corresponding ends.

6. The large universal positioning support according to claim 4, characterized in that: The synchronous drive assembly (40) includes a drive unit (41) and a mounting support (42) spaced apart and supported on the outer wall of the sleeve (21), a pulley shaft (43) rotatably mounted on the mounting support (42), a connecting flange assembly (44) connected between the pulley shaft (43) and the output shaft of the drive unit (41), and two sets of pulley components (45); Each set of pulley components (45) is installed between the pulley shaft (43) and the corresponding driving screw (33) to transmit the rotational power of the driving unit (41) to the two sets of pulley components (45) through the pulley shaft (43) to synchronously drive the two driving screws (33) to rotate; The mounting support (42) is also covered by a bearing assembly shield (46) fixed on the outer wall of the sleeve (21), and the driving unit (41) is also covered by a motor shield (47) fixed on the outer wall of the sleeve (21).

7. The large universal positioning support according to claim 3, characterized in that: The linear telescopic assembly further comprises two sets of displacement monitors (50) respectively electrically connected to the operation control cabinet (80). The two sets of displacement monitors (50) are respectively arranged at two ends of the sleeve (21) for monitoring the sliding distance of the telescopic joint assembly (30) at the corresponding end relative to the sleeve (21).

8. The large universal positioning support according to claim 4, characterized in that: The quick-change joint assembly (60) includes a first connecting pipe (61) and a connecting flange (62) fixed to the end of the first connecting pipe (61). After the first connecting pipe (61) is inserted into the sleeve (31) of the telescopic joint assembly (30), it is quickly connected to the sleeve (31) by a latch penetrating the two. The pressure detection wheel assembly (70) includes a second connecting tube (71), a wheel bracket (72) fixed to the end of the second connecting tube (71), a wheel axle (73) rotatably mounted on the wheel bracket (72), a detection wheel (74) fixedly mounted on the outer circle of the wheel axle (73), and a pressure sensor (75) fixed inside the detection wheel (74). The pressure sensor (75) is electrically connected to the operation control cabinet (80). The second connecting pipe (71) is inserted into the first connecting pipe (61) and is quickly connected to the quick-change joint assembly (60) via a latch.

9. The large universal positioning support according to claim 1, characterized in that: The lifting rotary base (10) comprises a support frame (11), a rotary member (12) fixed to the top of the support frame (11), and a plurality of telescopic legs (13) supported at the bottom of the support frame (11), wherein the rotary member (12) and the telescopic legs (13) are electrically connected to the operation control cabinet (80) respectively. The linear telescopic assembly is fixed to the top end of the rotating member (12) symmetrically with respect to the rotating center line of the rotating member (12); A plurality of groups of telescopic legs (13) are arranged vertically and telescopically in the height direction, and the upper end of each telescopic leg (13) is fixedly connected to the support frame (11), and the opposite lower end is rolled and supported on the ground.

10. The large universal positioning support according to claim 9, characterized in that: The telescopic support leg (13) comprises an inner tube (131) and an outer tube (132) arranged in an inner and outer manner, a telescopic electric push rod (133) fixed in the outer tube (132) along the axial direction, and a synchronous steering wheel (134) fixed at the lower end of the outer tube (132). The telescopic electric push rod (133) is electrically connected to the operation control cabinet (80). The upper end of the telescopic electric push rod (133) is connected to the lower end of the inner cylinder (131), and the upper end of the inner cylinder (131) is fixedly connected to the lower surface of the support frame (11).

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