Synchronous floating lifting and rotating mechanism

Abstract

The present invention provides a synchronous floating lifting and rotating mechanism, comprising: a mounting base and two corresponding lifting and rotating groups; the lifting and rotating groups comprise a sliding frame structure, a lifting structure, a fixed structure, and a supporting structure; one end of the fixed structure is a floating end, at least a portion of the floating end is rotatably disposed within the lifting structure, and an adjustment gap is provided between the floating end and the lifting structure in the circumferential direction; wherein the fixed structures of the two lifting and rotating groups respectively clamp the two ends of a workpiece to be operated to drive the workpiece to be operated to rotate; the floating ends of the two lifting and rotating groups respectively move within the corresponding adjustment gap range relative to the lifting structure so that the rotation axes of the fixed structures of the two lifting and rotating groups are collinear. The present invention enables the fixed structure to adapt to a certain error, and can keep the rotation axis of the workpiece to be operated horizontal during lifting and rotation, which is more conducive to the rapid lifting and rotation of the workpiece to be operated, and improves the subsequent workpiece processing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of heavy workpiece assembly and turnover equipment, and in particular to a synchronous floating lifting and rotating mechanism. Background Art

[0002] In the traditional lifting and flipping operations of large and heavy workpieces, due to the weight and size conditions of the heavy workpieces, it is usually necessary to use machinery and equipment to clamp and fix the two ends of the workpiece to replace manpower to achieve lifting and flipping; however, due to the existence of errors in existing lifting and rotating equipment, the heights of the two ends of the workpiece when they are lifted and lowered at the same time are usually different and the flipping is not synchronized, which causes the workpiece to be subjected to additional torque during the flipping process. In addition, due to the inconsistent heights of the two ends of the workpiece when lifted and lowered, the rotation axis of the workpiece is not horizontal when it is rotated, but the rotation axis of the structure that drives the workpiece to rotate is usually set horizontally, which causes the workpiece to get stuck and unable to rotate normally (that is, what workers often call "equipment holding back"), which can easily cause damage to the workpiece and / or rotating equipment, is not conducive to the rapid lifting and rotation of the workpiece, and reduces the processing efficiency of subsequent workpieces.

[0003] At the same time, existing lifting and rotating equipment, such as rack and pinion lifts, although they can realize basic lifting functions, cannot avoid the above-mentioned problems, resulting in the inability to realize automatic flipping of the workpiece during the lifting process, and the inability to effectively avoid the problem of inconsistent heights at both ends of the workpiece during flipping. Summary of the Invention

[0004] The present invention provides a synchronous floating lifting and rotating mechanism to solve the problems that the lifting and rotating equipment in the prior art cannot realize automatic flipping of the workpiece during the lifting process and cannot effectively avoid inconsistent heights of the two ends of the workpiece during flipping.

[0005] To address the above-mentioned problems, the present invention provides a synchronous floating lifting and rotating mechanism, comprising: a mounting base and two corresponding lifting and rotating groups; the lifting and rotating groups comprising a sliding frame structure, a lifting structure, a fixed structure, and a support structure; the sliding frame structure of one lifting and rotating group is slidably and lockably mounted on the mounting base, while the sliding frame structure of the other lifting and rotating group is fixedly mounted on the mounting base; the lifting structure is liftably mounted on the sliding frame structure; one end of the fixed structure is a floating end, at least a portion of which is rotatably mounted within the lifting structure, an adjustable gap being defined between the floating end and the lifting structure in a circumferential direction, and the floating end and the lifting structure are axially limited at the floating end; a portion of the support structure abuts against a bottom of the fixed structure and is rotationally engaged with the fixed structure to support the fixed structure; wherein the distance between the sliding frame structures of the two lifting and rotating groups is adjustable to accommodate the dimensions of the ends of a workpiece to be operated; the fixed structures of the two lifting and rotating groups respectively clamp the ends of the workpiece to be operated to drive the workpiece to be operated to rotate; the lifting structures of the two lifting and rotating groups jointly drive the workpiece to be operated up and down; the floating ends of the two lifting and rotating groups respectively move relative to the lifting structure within corresponding adjustable gaps so that the rotation axes of the fixed structures of the two lifting and rotating groups are collinear.

[0006] Furthermore, the lifting structure includes a lifting frame, a hydraulic drive cylinder and a hydraulic adjustment part. The lower part of the lifting frame is driven and connected to the hydraulic drive cylinder. The hydraulic drive cylinder is arranged on the sliding frame structure to follow the movement of the sliding frame structure. The hydraulic drive cylinder is used to drive the lifting frame to lift and lower; the hydraulic adjustment part is adjustably arranged on the lifting frame; wherein, the hydraulic drive cylinders of the two lifting and rotating groups are connected to the same external hydraulic source to drive the lifting frames of the two lifting and rotating groups to lift and lower at the same time; the hydraulic adjustment part has a limiting cavity inside, at least a part of the floating end is rotatably arranged in the limiting cavity, and the adjustment gap is located between the circumference of the floating end and the inner wall of the limiting cavity. By adjusting the hydraulic adjustment part, the size of the limiting cavity is adjusted to adjust the size of the adjustment gap.

[0007] Furthermore, the hydraulic adjustment part includes multiple groups of hydraulic components, which are arranged at equal intervals along the circumference of the floating end; the hydraulic components include hydraulic cylinders and support blocks, and the support blocks can be slidably arranged on the lifting frame along the radial direction of the floating end, for limiting and supporting the floating end; the hydraulic cylinder is arranged on the lifting frame, for driving the support block close to or away from the floating end; wherein, the multiple support blocks of the multiple groups of hydraulic components jointly form a limiting cavity, and the support block is used to form a part of the inner wall of the limiting cavity with the surface abutting the floating end; by separately adjusting the hydraulic cylinders and support blocks of the multiple groups of hydraulic components, the size of the adjustment gap is adjusted.

[0008] Furthermore, there are four groups of hydraulic parts, which are distributed in an X shape, and the central axis of the hydraulic cylinder in each group of hydraulic parts is collinear with the central axis of the support block; the four groups of hydraulic parts are respectively the upper left group, the upper right group, the lower left group and the lower right group, the central axis of the hydraulic cylinder of the upper left group is collinear with the central axis of the hydraulic cylinder of the lower right group, and the central axis of the hydraulic cylinder of the upper right group is collinear with the central axis of the hydraulic cylinder of the lower left group; wherein, the support block in the lower right group and / or the support block in the lower left group abuts against the floating end to support the floating end.

[0009] Furthermore, the floating end has a mating protrusion on the outer circumference, which is used to cooperate with the support block for sliding limit, so as to axially limit the fixed structure: and / or, the fixed structure also includes a driving motor, a first transmission gear and a second transmission gear, the first transmission gear is connected to the driving motor and meshes with the second transmission gear; the second transmission gear is sleeved and fixed on the outer circumference of the floating end; wherein, the driving motor drives the first transmission gear to rotate, so as to drive the second transmission gear, the floating end and the workpiece to be operated to rotate; when the floating end moves within the adjustment gap range, the first transmission gear and the second transmission gear maintain meshing.

[0010] Furthermore, the synchronous floating lifting and rotation mechanism also includes a rotation locking structure, which has a locked state and a disengaged state. In the locked state, the rotation locking structure cooperates with the fixed structure to prevent the fixed structure and the workpiece to be operated from rotating; in the disengaged state, the rotation locking structure disengages from the fixed structure to allow the fixed structure and the workpiece to be operated to rotate.

[0011] Furthermore, the rotation locking structure includes two positioning columns, which are movably arranged on both sides of the floating end; in the locked state, the two positioning columns are respectively inserted into the floating end; in the disengaged state, the two positioning columns are respectively disengaged from the floating end.

[0012] Furthermore, the supporting structure includes a pneumatic support cylinder, a support arm and a roller, the roller is rotatably arranged in the middle of the support arm and is rotatably coordinated with the bottom of the fixed structure; one end of the support arm is rotatably connected to the lifting structure, and the other end is connected to the pneumatic support cylinder; the pneumatic support cylinder drives the support arm to rotate to drive the roller to support the fixed structure; wherein, with the rotatable connection end of the support arm and the lifting structure as the fulcrum, a first force arm is formed between the connection end of the pneumatic support cylinder and the support arm and the fulcrum, and a second force arm is formed between the roller and the fulcrum, and the first force arm is greater than the second force arm to form a force-saving lever structure.

[0013] Furthermore, the synchronous floating lifting and rotation mechanism also includes a lifting locking structure, which is arranged on the lifting structure; the sliding frame structure includes a vertically arranged locking rack; the lifting locking structure has a locked state and an unlocked state. In the locked state, the lifting locking structure engages with the locking teeth on the locking rack to fix the lifting structure on the sliding frame structure; in the unlocked state, the lifting locking structure disengages from the locking rack to allow the lifting structure to be lifted and lowered.

[0014] Furthermore, the fixed structure includes a floating support assembly and a clamping jaw assembly, the floating end is one end of the floating support assembly, and the clamping jaw assembly is arranged at the other end of the floating support assembly; the clamping jaw assembly includes a hollow frame and a plurality of positioning pins respectively arranged on the hollow frame; the hollow frame is arranged on the floating support assembly to follow the movement of the floating support assembly; the positioning pins are used to cooperate with the positioning holes on the workpiece to be operated; wherein, the clamping jaw assemblies of the two lifting and rotating groups are respectively connected to an external hydraulic source to drive the two clamping jaw assemblies to clamp the workpiece to be operated respectively; the rotation axis of the clamping jaw assembly is collinear with the central axis of the workpiece to be operated; the synchronous floating lifting and rotation mechanism also includes an iron stop limit structure, which is arranged on the lifting structure, and when the floating end moves within the adjustment gap range, the iron stop limit structure is used to limit the clamping jaw assembly.

[0015] Applying the technical solution of the present invention, the present invention provides a synchronous floating lifting and rotating mechanism, comprising: a mounting base and two corresponding lifting and rotating groups; the lifting and rotating groups comprise a sliding frame structure, a lifting structure, a fixed structure and a supporting structure, the sliding frame structure of one lifting and rotating group is slidably and lockably arranged on the mounting base, and the sliding frame structure of the other lifting and rotating group is fixedly arranged on the mounting base; the lifting structure is liftably arranged on the sliding frame structure; one end of the fixed structure is a floating end, at least a part of the floating end is rotatably arranged in the lifting structure, an adjustable gap is provided between the circumference of the floating end and the lifting structure, and the floating end Cooperate with the axial limit of the lifting structure at the floating end; a part of the supporting structure abuts against the bottom of the fixed structure and cooperates with the fixed structure to support the fixed structure; wherein, the distance between the sliding frame structures of the two lifting and rotating groups is adjusted to adapt to the size of the two ends of the workpiece to be operated; the fixed structures of the two lifting and rotating groups respectively clamp the two ends of the workpiece to be operated to drive the workpiece to be operated to rotate; the lifting structures of the two lifting and rotating groups jointly drive the workpiece to be operated to lift and lower; the floating ends of the two lifting and rotating groups move within the corresponding adjustment gap range relative to the lifting structure, so that the rotation axes of the fixed structures of the two lifting and rotating groups are collinear.

[0016] The present invention realizes the automatic lifting and turning of the workpiece to be operated in terms of structure by arranging two sets of corresponding lifting and rotating groups to work together; by arranging an adjustment gap between the circumference of the floating end and the lifting structure, the fixed structure has a certain degree of adjustment freedom in the radial direction without affecting the lifting and turning of the fixed structure, so that the fixed structure can adapt to a certain error, ensuring that the heights of the two ends of the workpiece to be operated are basically consistent when they are lifted and lowered at the same time, and the rotation axis of the workpiece to be operated can be kept horizontal during rotation, which not only avoids the workpiece to be operated from being subjected to additional torque during the turning process, but also avoids the workpiece to be operated from being stuck during rotation, ensures the normal rotation of the workpiece to be operated, avoids damage to the workpiece to be operated and the rotating equipment, is more conducive to the rapid lifting and rotation of the workpiece to be operated, and improves the subsequent workpiece processing efficiency; by arranging a part of the support structure to abut against the bottom of the fixed structure, and with the fixed structure The rotation cooperation of the structure not only avoids the interference of the movement of the rotation of the fixed structure, but also realizes the effective support of the fixed structure, avoids the obvious deformation of the fixed structure due to the large force, reduces the deflection change of the fixed structure when clamping the large mass workpiece to be operated, and further maintains the horizontal axis of the rotation of the workpiece to be operated during rotation; the present invention can absorb the slight deviation of the fixed structure when the workpiece to be operated is flipped by setting an adjustment gap, so that the overall structure is evenly and reasonably stressed; the synchronous floating lifting and rotating mechanism proposed in the present invention can be combined with the existing control technology in the future to realize the accurate and stable rotation and lifting of the workpiece to be operated during the processing. In actual use, it can significantly improve the processing accuracy of the workpiece to be operated, and improve production efficiency and product quality; in addition, the present invention has a simple structure and low cost, is easy to assemble and subsequent maintenance, is suitable for large-scale promotion and use, and is particularly suitable for automated production lines and precision processing fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 A partial structural diagram of a synchronous floating lifting and rotating mechanism provided by an embodiment of the present invention is shown;

[0019] Figure 2 An enlarged view of a portion of the structure of the synchronous floating lifting and rotating mechanism provided by an embodiment of the present invention at the lifting structure position is shown;

[0020] Figure 3 A partial structural schematic diagram of the interior of the lifting structure and the supporting structure provided by an embodiment of the present invention is shown.

[0021] The above drawings include the following reference numerals:

[0022] 10. Install the base;

[0023] 20. Sliding rack structure; 21. Locking rack;

[0024] 30. Lifting structure; 31. Lifting frame; 32. Hydraulic drive cylinder; 33. Hydraulic adjustment unit; 34. Hydraulic cylinder; 35. Support block; 36. Upper left group; 37. Upper right group; 38. Lower left group; 39. Lower right group;

[0025] 40. Fixed structure; 41. Floating end; 42. Matching protrusion; 43. Clamping jaw assembly; 431. Hollow frame; 432. Positioning pin;

[0026] 50. Support structure; 51. Pneumatic support cylinder; 52. Support arm; 53. Roller;

[0027] 60. Adjust the gap;

[0028] 70. Rotation locking structure; 71. Positioning column;

[0029] 80. Lifting and locking structure;

[0030] 90. Iron stop limit structure. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] like Figures 1 to 3As shown, an embodiment of the present invention provides a synchronous floating lifting and rotating mechanism, comprising: a mounting base 10 and two corresponding lifting and rotating groups; the lifting and rotating groups comprise a sliding frame structure 20, a lifting structure 30, a fixed structure 40 and a supporting structure 50, the sliding frame structure 20 of one lifting and rotating group is slidably and lockably arranged on the mounting base 10, and the sliding frame structure 20 of the other lifting and rotating group is fixedly arranged on the mounting base 10; the lifting structure 30 is liftably arranged on the sliding frame structure 20; one end of the fixed structure 40 is a floating end 41, at least a part of the floating end 41 is rotatably arranged in the lifting structure 30, and an adjustable gap 60 is provided between the circumference of the floating end 41 and the lifting structure 30, and the floating end 41 and the lifting structure 30 are arranged in a fixed manner. The movable end 41 cooperates with the lifting structure 30 in axial limiting at the floating end 41; a portion of the supporting structure 50 abuts against the bottom of the fixed structure 40 and rotates with the fixed structure 40 to support the fixed structure 40; wherein, the distance between the sliding frame structures 20 of the two lifting and rotating groups is adjusted to adapt to the dimensions of the two ends of the workpiece to be operated; the fixed structures 40 of the two lifting and rotating groups respectively clamp the two ends of the workpiece to be operated to drive the workpiece to be operated to rotate; the lifting structures 30 of the two lifting and rotating groups jointly drive the workpiece to be operated to be lifted and lowered; the floating ends 41 of the two lifting and rotating groups move within the corresponding adjustment gap 60 relative to the lifting structure 30, so that the rotation axes of the fixed structures 40 of the two lifting and rotating groups are collinear.

[0033] The present invention realizes the automatic lifting and turning of the workpiece to be operated in terms of structure by setting two sets of corresponding lifting and rotating groups to work together; by setting an adjustment gap 60 between the circumference of the floating end 41 and the lifting structure 30, the fixed structure 40 has a certain degree of adjustment freedom in the radial direction without affecting the lifting and rotation of the fixed structure 40, so that the fixed structure 40 can adapt to a certain error, ensuring that the heights of the two ends of the workpiece to be operated are basically consistent when they are lifted and lowered at the same time, and the rotation axis of the workpiece to be operated can be kept horizontal during rotation, which not only avoids the workpiece to be operated from being subjected to additional torque during the turning process, but also avoids the workpiece to be operated from being stuck during rotation, ensures the normal rotation of the workpiece to be operated, avoids damage to the workpiece to be operated and the rotating equipment, is more conducive to the rapid lifting and rotation of the workpiece to be operated, and improves the subsequent workpiece processing efficiency; by setting a part of the support structure 50 to abut against the bottom of the fixed structure 40, and with the fixed The rotational cooperation of structure 40 not only avoids the interference of the rotation of the fixed structure 40, but also realizes the effective support of the fixed structure 40, avoids the obvious deformation of the fixed structure 40 due to the large force, reduces the deflection change of the fixed structure 40 when clamping the large mass workpiece to be operated, and further maintains the horizontal axis of the rotation of the workpiece to be operated during rotation; the present invention is able to absorb the slight deviation of the fixed structure 40 when the workpiece to be operated is flipped by setting the adjustment gap 60, so that the overall structure is uniformly and reasonably stressed; the synchronous floating lifting and rotating mechanism proposed in the present invention can be subsequently combined with the existing control technology to realize the accurate and stable rotation and lifting of the workpiece to be operated during the processing. In actual use, it can significantly improve the processing accuracy of the workpiece to be operated, improve production efficiency and product quality; in addition, the present invention has a simple structure and low cost, is easy to assemble and subsequent maintenance, is suitable for large-scale promotion and use, and is particularly suitable for automated production lines and precision processing fields.

[0034] In a specific embodiment of the present invention, Figure 1 As shown, the distance between the fixed structure 40 on the left and the fixed structure 40 on the right is adjusted by a sliding sliding frame structure 20 to adapt to the clamping requirements of workpieces of different sizes, and enhance versatility, so that the same synchronous floating lifting and rotating mechanism can handle workpieces of various sizes, thereby improving the flexibility and efficiency of the production line, and being suitable for a multi-variety, small-batch production environment, such as customized processing of automotive parts; there is no need to frequently replace equipment or adjust production lines, which greatly improves processing efficiency, reduces production costs, and enables the production line to respond to market demand more quickly, thereby improving production flexibility and competitiveness.

[0035] like Figure 1 and Figure 3As shown, the lifting structure 30 includes a lifting frame 31, a hydraulic drive cylinder 32 and a hydraulic adjustment part 33. The lower part of the lifting frame 31 is driven and connected to the hydraulic drive cylinder 32. The hydraulic drive cylinder 32 is arranged on the sliding frame structure 20 to move with the sliding frame structure 20. The hydraulic drive cylinder 32 is used to drive the lifting frame 31 to move up and down; the hydraulic adjustment part 33 is adjustably arranged on the lifting frame 31; wherein, the hydraulic drive cylinders 32 of the two lifting and rotating groups are connected to the same external hydraulic source to drive the lifting frames 31 of the two lifting and rotating groups to move up and down at the same time; the hydraulic adjustment part 33 has a limiting cavity inside, at least a part of the floating end 41 is rotatably arranged in the limiting cavity, and the adjustment gap 60 is located between the circumference of the floating end 41 and the inner wall of the limiting cavity. By adjusting the hydraulic adjustment part 33, the size of the limiting cavity is adjusted to adjust the size of the adjustment gap 60.

[0036] This arrangement not only ensures the reliable operation of the lifting structure 30, but also simplifies the structure of the lifting structure 30; by arranging the hydraulic drive cylinders 32 of the two lifting and rotating groups to be connected to the same external hydraulic source, the lifting frames 31 of the two lifting and rotating groups can be lifted and lowered at the same time, thereby ensuring that the heights of the two ends of the workpiece to be operated are basically consistent during lifting and lowering, and the rotation axis of the workpiece to be operated can be kept horizontal during rotation.

[0037] like Figure 3 As shown, the hydraulic adjustment part 33 includes multiple groups of hydraulic components, which are arranged at equal intervals along the circumference of the floating end 41; the hydraulic components include a hydraulic cylinder 34 and a support block 35, and the support block 35 can be slidably arranged on the lifting frame 31 along the radial direction of the floating end 41 to limit and support the floating end 41; the hydraulic cylinder 34 is arranged on the lifting frame 31 to drive the support block 35 to move closer to or away from the floating end 41; wherein, the multiple support blocks 35 of the multiple groups of hydraulic components jointly form a limiting cavity, and the surface of the support block 35 abutting against the floating end 41 forms a part of the inner wall of the limiting cavity; by separately adjusting the hydraulic cylinder 34 and the support block 35 of the multiple groups of hydraulic components, the size of the adjustment gap 60 is adjusted.

[0038] By providing multiple groups of hydraulic components, reliable adjustment of the size of the limiting cavity and the adjustment gap 60 is ensured.

[0039] like Figure 3As shown, there are four groups of hydraulic components, which are distributed in an X shape, and the central axis of the hydraulic cylinder 34 in each group of hydraulic components is collinear with the central axis of the support block 35; the four groups of hydraulic components are respectively the upper left group 36, the upper right group 37, the lower left group 38 and the lower right group 39, the central axis of the hydraulic cylinder 34 of the upper left group 36 is collinear with the central axis of the hydraulic cylinder 34 of the lower right group 39, and the central axis of the hydraulic cylinder 34 of the upper right group 37 is collinear with the central axis of the hydraulic cylinder 34 of the lower left group 38; wherein, the support block 35 in the lower right group 39 and / or the support block 35 of the lower left group 38 abuts against the floating end 41 to support the floating end 41.

[0040] By arranging four groups of hydraulic components in an X-shaped distribution, and with the central axis of the hydraulic cylinder 34 in each group of hydraulic components collinear with the central axis of the support block 35, the lower left group 38 and the lower right group 39 can reliably bear the gravity transmitted from the floating end 41, while a certain size of adjustment gap 60 is provided between the upper left group 36 and the upper right group 37 and the floating end 41.

[0041] like Figure 3 As shown, the floating end 41 has a mating protrusion 42 on the outer circumference, and the mating protrusion 42 is used to cooperate with the support block 35 for sliding and limiting, so as to axially limit the fixed structure 40: and / or, the fixed structure 40 also includes a driving motor, a first transmission gear and a second transmission gear, the first transmission gear is connected to the driving motor and meshes with the second transmission gear; the second transmission gear is sleeved and fixed on the outer circumference of the floating end 41; wherein, the driving motor drives the first transmission gear to rotate, so as to drive the second transmission gear, the floating end 41 and the workpiece to be operated to rotate; when the floating end 41 moves within the range of the adjustment gap 60, the first transmission gear and the second transmission gear maintain meshing.

[0042] By setting the matching protrusion 42 to cooperate with the support block 35 for sliding limitation, the rotational freedom of the fixed structure 40 is guaranteed and the axial limitation of the fixed structure 40 is achieved; by setting the driving motor, the first transmission gear and the second transmission gear to work together, a simple structure is used to achieve reliable and precise control of the rotation of the floating end 41 and the workpiece to be operated.

[0043] like Figure 3 As shown, the synchronous floating lifting and rotating mechanism also includes a rotation locking structure 70, which has a locked state and a disengaged state. In the locked state, the rotation locking structure 70 cooperates with the fixed structure 40 to prevent the fixed structure 40 and the workpiece to be operated from rotating; in the disengaged state, the rotation locking structure 70 disengages from the fixed structure 40 to allow the fixed structure 40 and the workpiece to be operated to rotate.

[0044] By providing the rotation locking structure 70 , reliable fixation of the fixing structure 40 and the workpiece to be operated is achieved, thereby avoiding the problem of inoperability due to disorderly rotation of the workpiece to be operated when the driving motor fails.

[0045] like Figure 3 As shown, the rotation locking structure 70 includes two positioning columns 71, which are movably arranged on both sides of the floating end 41; in the locked state, the two positioning columns 71 are respectively inserted into the floating end 41; in the disengaged state, the two positioning columns 71 are respectively disengaged from the floating end 41.

[0046] This arrangement not only ensures the reliable operation of the rotation locking structure 70, but also simplifies the structure of the rotation locking structure 70.

[0047] like Figure 3 As shown, the support structure 50 includes a pneumatic support cylinder 51, a support arm 52 and a roller 53. The roller 53 is rotatably arranged in the middle of the support arm 52 and is rotatably matched with the bottom of the fixed structure 40. One end of the support arm 52 is rotatably connected to the lifting structure 30, and the other end is connected to the pneumatic support cylinder 51. The pneumatic support cylinder 51 drives the support arm 52 to rotate to drive the roller 53 to support the fixed structure 40. Among them, with the rotation connection end of the support arm 52 and the lifting structure 30 as the fulcrum, a first force arm is formed between the connection end of the pneumatic support cylinder 51 and the support arm 52 and the fulcrum, and a second force arm is formed between the roller 53 and the fulcrum. The first force arm is greater than the second force arm to form a force-saving lever structure.

[0048] By arranging the pneumatic support cylinder 51, the support arm 52 and the roller 53 to work together, a force-saving lever structure is formed with a simple structure, and thus, without affecting the rotation of the fixed structure 40, reliable support for the fixed structure 40 of large mass can be achieved with a small force, further reducing the deflection change of the fixed structure 40 when carrying the workpiece to be operated, thereby ensuring that the rotation axis of the workpiece to be operated is horizontal during rotation.

[0049] like Figure 1 and Figure 2 As shown, the synchronous floating lifting and rotation mechanism also includes a lifting locking structure 80, which is arranged on the lifting structure 30; the sliding frame structure 20 includes a vertically arranged locking rack 21; the lifting locking structure 80 has a locked state and an unlocked state. In the locked state, the lifting locking structure 80 engages with the locking teeth on the locking rack 21 to fix the lifting structure 30 on the sliding frame structure 20; in the unlocked state, the lifting locking structure 80 disengages from the locking rack 21 to allow the lifting structure 30 to be lifted and lowered.

[0050] By setting the lifting locking structure 80, the lifting structure 30 and the workpiece to be operated are reliably fixed in the vertical direction, thereby avoiding the problem of being unable to operate due to the sudden drop of the workpiece to be operated when the support of the lifting structure 30 fails.

[0051] like Figure 1 、 Figure 2 and Figure 3 As shown, the fixed structure 40 includes a floating support assembly and a clamping jaw assembly 43, the floating end 41 is one end of the floating support assembly, and the clamping jaw assembly 43 is arranged at the other end of the floating support assembly; the clamping jaw assembly 43 includes a hollow frame 431 and a plurality of positioning pins 432 respectively arranged on the hollow frame 431; the hollow frame 431 is arranged on the floating support assembly to follow the movement of the floating support assembly; the positioning pins 432 are used to cooperate with the positioning holes on the workpiece to be operated; wherein, the clamping jaw assemblies 43 of the two lifting and rotating groups are respectively connected to an external hydraulic source to drive the two clamping jaw assemblies 43 to clamp the workpiece to be operated respectively; the rotation axis of the clamping jaw assembly 43 is collinear with the central axis of the workpiece to be operated; the synchronous floating lifting and rotation mechanism also includes an iron stop limit structure 90, which is arranged on the lifting structure 30. When the floating end 41 moves within the range of the adjustment gap 60, the iron stop limit structure 90 is used to limit the clamping jaw assembly 43.

[0052] By setting the specific structure of the fixing structure 40, a simple structure is used to ensure reliable fixation of the workpiece to be operated; by setting the clamping jaw assemblies 43 of the two lifting and rotating groups to be connected to an external hydraulic source respectively, the two clamping jaw assemblies 43 can be clamped and adjusted according to the specific conditions of the workpiece to be operated, further ensuring that the workpiece to be operated is subjected to uniform force; by setting the iron limit structure 90, the clamping jaw assembly 43 is limited, thereby ensuring the accuracy of the clamping jaw assembly 43 in clamping the workpiece to be operated and the safety after clamping and fixing.

[0053] Therefore, the synchronous floating lifting and rotating mechanism proposed in the present invention realizes the precise and stable rotation and lifting of the workpiece to be operated during the processing operation through sophisticated structural design and control, and at the same time has good adaptability and floating compensation capabilities; the synchronous floating lifting and rotating mechanism significantly improves the processing accuracy of the workpiece to be operated, reduces processing errors, and improves production efficiency and product quality.

[0054] In a specific embodiment of the present invention, Figure 1As shown, due to the existence of the adjustment gap 60, the floating end 41 has an omnidirectional floating function in the circumferential direction, and the iron limit structure 90 can limit the horizontal displacement of the fixed structure 40 on the left, ensuring that the workpiece to be operated is accurately positioned when clamped; at least one group of hydraulic drive cylinders 32 synchronously drives the left and right side clamping jaw assemblies 43 and the workpiece to be operated to rise and fall, and the slight asynchrony between the two ends of the workpiece to be operated is automatically adapted through the floating function of the adjustment gap 60 of the fixed structure 40 on both sides, ensuring that the center lines of the two ends of the workpiece to be operated coincide with the rotation axis of the fixed structure 40; the servo motor and the control system drive the fixed structure 40 to rotate precisely, and the rotation of the right side clamping jaw assembly 43 can be set to follow the left side clamping jaw assembly 43, that is, a servo motor is set at the left side clamping jaw assembly 43, which can actively rotate, and the right side clamping jaw assembly 43 is follow-up.

[0055] The working process and principle of a specific embodiment of the present invention are now described in detail as follows:

[0056] On the diesel mining engine assembly line, the cylinder workpiece (i.e., the workpiece to be operated) is transferred to the clamping position of the synchronous floating lifting and rotating mechanism. The left and right fixed structures 40 are controlled to be located on the left and right sides of the cylinder workpiece, respectively, to prepare for clamping. The two fixed structures 40 are symmetrically arranged and located on the lifting structure 30, which is located on the installation base 10 of the diesel mining engine assembly line. The center line of the clamping jaw assembly 43 of the fixed structure 40 is arranged collinearly with the center line of the cylinder workpiece.

[0057] The two lifting frames 31 are connected to the mounting base 10 via two hydraulic drive cylinders 32 respectively;

[0058] The iron stop limit structure 90 limits the horizontal displacement of the fixed structure 40 so that it does not move excessively when clamping the workpiece and ensures that the clamping jaws are accurately positioned;

[0059] The heads of the jaw assemblies 43 of the left and right fixing structures 40 are controlled by a hydraulic source for synchronous tightening, clamping the two end faces of the cylinder workpiece and aligning the centerline of the workpiece with the rotation axis of the fixing structure 40. When clamping, the left and right jaw assemblies 43 leave a gap of approximately 0.05 mm between the two sides of the cylinder workpiece, and the size of the adjustment gap 60 is also set to no less than 0.05 mm, thereby ensuring that excessive stress is not generated in both the circumferential and axial directions, thereby avoiding damage to the cylinder workpiece.

[0060] The hydraulic drive cylinders 32 of the two lifting and rotating groups are connected to the same external hydraulic source, which drives the clamping jaw assembly 43 and the cylinder workpiece to rise and fall vertically simultaneously. At this time, the workpiece is synchronously raised from a lower position to the set position. Due to the design of the adjustable gap 60 on the left and right sides, slight asynchronism is allowed during the lifting process, and these deviations can be adjusted by adjusting the gap 60.

[0061] After reaching the set position, the fixed structure 40 on the left side actively rotates to drive the workpiece to flip to the required angle.

[0062] In summary, the present invention provides a synchronous floating lifting and rotating mechanism, which realizes the automatic lifting and flipping of the workpiece to be operated in structure by setting two sets of corresponding lifting and rotating groups to work together; by setting an adjustment gap 60 between the circumference of the floating end 41 and the lifting structure 30, without affecting the lifting and rotation of the fixed structure 40, the fixed structure 40 has a certain degree of adjustment freedom in the radial direction, so that the fixed structure 40 can adapt to a certain error, ensuring that the heights of the two ends of the workpiece to be operated are basically consistent when they are lifted and lowered at the same time, and the rotation axis of the workpiece to be operated can be kept horizontal during rotation, which not only avoids the workpiece to be operated from being subjected to additional torque during the flipping process, but also avoids the workpiece to be operated from being stuck during rotation, ensures the normal rotation of the workpiece to be operated, avoids damage to the workpiece to be operated and the rotating equipment, is more conducive to the rapid lifting and rotation of the workpiece to be operated, and improves the subsequent workpiece processing efficiency; by setting a part of the support structure 50 to abut against the fixed The bottom of the structure 40 is coordinated with the rotation of the fixed structure 40, which not only avoids the interference of the movement of the rotation of the fixed structure 40, but also realizes the effective support of the fixed structure 40, avoids the obvious deformation of the fixed structure 40 due to the large force, reduces the deflection change of the fixed structure 40 when clamping a large mass workpiece to be operated, and further maintains the horizontal axis of the rotation of the workpiece to be operated during rotation; the present invention can absorb the slight deviation of the fixed structure 40 when the workpiece to be operated is flipped by setting the adjustment gap 60, so that the overall structure is uniformly and reasonably stressed; the synchronous floating lifting and rotation mechanism proposed in the present invention can be combined with the existing control technology in the future to realize the accurate and stable rotation and lifting of the workpiece to be operated during the processing. In actual use, it can significantly improve the processing accuracy of the workpiece to be operated, improve production efficiency and product quality; in addition, the present invention has a simple structure and low cost, is easy to assemble and subsequent maintenance, is suitable for large-scale promotion and use, and is particularly suitable for automated production lines and precision processing fields.

[0063] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0064] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0065] In the description of the present invention, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0066] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0067] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0068] 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 are intended to be within the scope of protection of the present invention.

Claims

1. A synchronous floating lifting and rotating mechanism, characterized in that: include: Install the base and two corresponding lifting and rotating groups; The lifting and rotating group includes a sliding frame structure, a lifting structure, a fixing structure and a supporting structure. The sliding frame structure of one lifting and rotating group is slidably and lockably arranged on the mounting base, and the sliding frame structure of the other lifting and rotating group is fixedly arranged on the mounting base.

7. The swiftly and minutely adjusting device for a wood-planer working table as claimed in claim 1, wherein said linking rod and said adjusting base are pivotally connected to each other with a bolt, and said bolt has a round shank to contact with said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod. said linking rod is pivotally connected to said linking rod. The lifting structure includes a lifting frame, a hydraulic drive cylinder and a hydraulic adjustment part, the lower part of the lifting frame is drivingly connected to the hydraulic drive cylinder, the hydraulic drive cylinder is arranged on the sliding frame structure to follow the movement of the sliding frame structure, and the hydraulic drive cylinder is used to drive the lifting frame to rise and fall; the hydraulic adjustment part is adjustably arranged on the lifting frame; wherein, the hydraulic drive cylinders of the two lifting and rotating groups are connected to the same external hydraulic source to drive the lifting frames of the two lifting and rotating groups to rise and fall simultaneously; the hydraulic adjustment part has a limiting cavity inside, at least a part of the floating end is rotatably arranged in the limiting cavity, and the adjustment gap is located between the circumference of the floating end and the inner wall of the limiting cavity, and the size of the limiting cavity is adjusted by adjusting the hydraulic adjustment part to adjust the size of the adjustment gap; The supporting structure includes a pneumatic support cylinder, a support arm and a roller, wherein the roller is rotatably arranged in the middle of the support arm and is rotatably matched with the bottom of the fixed structure; one end of the support arm is rotatably connected to the lifting structure, and the other end is connected to the pneumatic support cylinder; the pneumatic support cylinder drives the support arm to rotate so as to drive the roller to support the fixed structure; wherein, with the rotatable connection end of the support arm and the lifting structure as the fulcrum, a first force arm is formed between the connection end of the pneumatic support cylinder and the support arm and the fulcrum, and a second force arm is formed between the roller and the fulcrum, and the first force arm is greater than the second force arm to form a force-saving lever structure.

2. The synchronous floating lifting and rotating mechanism according to claim 1, characterized in that: The hydraulic adjustment part includes multiple groups of hydraulic components, which are arranged at equal intervals along the circumference of the floating end; the hydraulic components include hydraulic cylinders and support blocks, and the support blocks can be slidably arranged on the lifting frame along the radial direction of the floating end to limit and support the floating end; the hydraulic cylinder is arranged on the lifting frame to drive the support block to move closer to or away from the floating end; wherein, the multiple support blocks of the multiple groups of hydraulic components jointly form the limiting cavity, and the surface of the support block used to abut against the floating end forms a part of the inner wall of the limiting cavity; the size of the adjustment gap is adjusted by separately adjusting the hydraulic cylinders and the support blocks of the multiple groups of hydraulic components.

3. The synchronous floating lifting and rotating mechanism according to claim 2, characterized in that: There are four groups of hydraulic components, which are distributed in an X shape, and the central axis of the hydraulic cylinder in each group of hydraulic components is collinear with the central axis of the support block; the four groups of hydraulic components are respectively an upper left group, an upper right group, a lower left group and a lower right group, the central axis of the hydraulic cylinder in the upper left group is collinear with the central axis of the hydraulic cylinder in the lower right group, and the central axis of the hydraulic cylinder in the upper right group is collinear with the central axis of the hydraulic cylinder in the lower left group; wherein, the support block in the lower right group and / or the support block in the lower left group abuts against the floating end to support the floating end.

4. The synchronous floating lifting and rotating mechanism according to claim 3, characterized in that: The outer circumference of the floating end is provided with a matching protrusion, which is used to cooperate with the support block in a sliding manner to axially limit the fixed structure. And / or, the fixed structure also includes a driving motor, a first transmission gear and a second transmission gear, the first transmission gear is connected to the driving motor and meshes with the second transmission gear; the second transmission gear is sleeved and fixed on the outer periphery of the floating end; wherein, the driving motor drives the first transmission gear to rotate, so as to drive the second transmission gear, the floating end and the workpiece to be operated to rotate; when the floating end moves within the adjustment gap range, the first transmission gear and the second transmission gear maintain meshing.

5. The synchronous floating lifting and rotating mechanism according to claim 1, characterized in that: The synchronous floating lifting and rotating mechanism further includes a rotation locking structure, which has a locked state and a disengaged state. In the locked state, the rotation locking structure cooperates with the fixed structure to prevent the fixed structure and the workpiece to be operated from rotating. In the disengaged state, the rotation locking structure is disengaged from the fixed structure, so that the fixed structure and the workpiece to be operated can rotate.

6. The synchronous floating lifting and rotating mechanism according to claim 5, characterized in that: The rotation locking structure includes two positioning columns, which are movably arranged on both sides of the floating end; in the locked state, the two positioning columns are respectively inserted into the floating end; in the disengaged state, the two positioning columns are respectively disengaged from the floating end.

7. The synchronous floating lifting and rotating mechanism according to claim 1, characterized in that: The synchronous floating lifting and rotating mechanism further includes a lifting locking structure, which is arranged on the lifting structure; the sliding frame structure includes a vertically arranged locking rack; the lifting locking structure has a locked state and an unlocked state. In the locked state, the lifting locking structure engages with the locking teeth on the locking rack to fix the lifting structure on the sliding frame structure; In the unlocked state, the lifting locking structure is disengaged from the locking rack, so that the lifting structure can be lifted or lowered.

8. The synchronous floating lifting and rotating mechanism according to claim 1, characterized in that: The fixed structure includes a floating support assembly and a clamping jaw assembly, the floating end is one end of the floating support assembly, and the clamping jaw assembly is arranged at the other end of the floating support assembly; the clamping jaw assembly includes a hollow frame and a plurality of positioning pins respectively arranged on the hollow frame; the hollow frame is arranged on the floating support assembly to follow the movement of the floating support assembly; the positioning pins are used to cooperate with the positioning holes on the workpiece to be operated; wherein, the clamping jaw assemblies of the two lifting and rotating groups are respectively connected to an external hydraulic source to drive the two clamping jaw assemblies to clamp the workpiece to be operated respectively; the rotation axis of the clamping jaw assembly is collinear with the central axis of the workpiece to be operated; The synchronous floating lifting and rotating mechanism also includes an iron stop limit structure, which is arranged on the lifting structure. When the floating end moves within the adjustment gap range, the iron stop limit structure is used to limit the clamping jaw assembly.

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