CN113182836B - Automatic tightening equipment for slewing bearing and turntable connecting bolt - Google Patents
Automatic tightening equipment for slewing bearing and turntable connecting bolt Download PDFInfo
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- CN113182836B CN113182836B CN202110639341.3A CN202110639341A CN113182836B CN 113182836 B CN113182836 B CN 113182836B CN 202110639341 A CN202110639341 A CN 202110639341A CN 113182836 B CN113182836 B CN 113182836B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
- B23P19/069—Multi-spindle machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/006—Holding or positioning the article in front of the applying tool
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Abstract
The automatic tightening equipment for the connecting bolts of the slewing bearing and the turntable is of a machine tool type structure, and consists of 4 groups of slewing bearing positioning devices (1), 1 group of turntable rear end center supports (2), 1 group of bases (3), 2 groups of single-shaft pre-tightening devices (4), 2 groups of double-shaft tightening devices (5), 1 group of turntable (6) and 1 group of turntable front end supports (7). The problem of automatic screwing of the slewing bearing and the turntable connecting bolt is solved; the problem that a plurality of bolts cannot be screwed down simultaneously in the traditional screwing mode is solved; the problem of low precision and unbalanced moment of the traditional screwing mode is solved; the problem of high labor intensity and high noise of the traditional screwing mode is solved; the problem of the assembly line is directly gone up to the upset after closing the piece and tightening has been accomplished is solved.
Description
Technical Field
The invention belongs to the field of bolt tightening, and particularly relates to the field of automatic tightening of a slewing bearing and a turntable connecting bolt in engineering hoisting machinery.
Background
The realization of automatic fastening of the slewing bearing and the turntable connecting bolt in the engineering hoisting machinery is always a difficult point puzzled in the industry. The main reasons are that the tightening torque for tightening the position is very strict, the tightening torque is very large, the number of tightening bolts is very large (up to nearly hundred), the whole volume of the slewing bearing and the turntable are relatively large after being combined, the weight is relatively heavy, the positioning and supporting space of the whole workpiece is relatively small, and the tightening process requirements are complex, which form the obstacle for realizing automatic tightening at the position.
The traditional assembly method is a stall type, a turntable is placed on the ground firstly for the convenience and labor saving of workers, the positioning combination surface of the turntable faces upwards, and then the slewing bearing is hung on the combination surface to be positioned and aligned (the assembly mode is opposite to that of the drawing). All bolts are manually carried on a rotary table by a person, each nut is screwed up one by one from top to bottom by a hand-held pneumatic wrench, and each bolt is subjected to moment verification one by a moment wrench after the nuts are screwed up; the pneumatic wrench has low fastening moment precision, high noise, high labor intensity and low efficiency, and can not ensure the accuracy and balance of the moment on each nut; when a person works, the person needs to climb up the turntable and the slewing bearing, the potential safety hazard exists when the working position is higher, in addition, the combined piece needs to be overturned after being screwed up and then lifted to the assembly line for assembly, and the potential safety hazard exists when time and labor are wasted.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides automatic screwing equipment for connecting bolts of a slewing bearing and a turntable, so as to solve the problems that the prior art is time-consuming and labor-consuming and has potential safety hazards.
The technical scheme of the invention is as follows: the product is composed of the following large components: the device comprises a slewing bearing positioning device (4 sleeves), a turntable rear end center support (1 sleeve), a base (1 sleeve), a single-shaft pre-tightening device (2 sleeves), a double-shaft tightening device, a turntable (1 sleeve) and a turntable front end support (1 sleeve);
the product solves the problem of automatic screwing of the slewing bearing and the turntable connecting bolt; the problem that a plurality of bolts cannot be screwed down simultaneously in the traditional screwing mode is solved; the problem of low precision and unbalanced moment of the traditional screwing mode is solved; the problem of high labor intensity and high noise of the traditional screwing mode is solved; the problem that the assembly line is directly connected with the assembly line without overturning after the assembly is screwed up is solved;
The base is the basic platform of the device. The center support at the rear end of the turntable, the single-shaft pre-tightening device and the double-shaft tightening device are directly or indirectly connected with the base; the center support at the rear end of the turntable is directly arranged on the base; the single-shaft pre-tightening device and the double-shaft tightening device are connected with the base through the rotary table; the dimensional accuracy adjustment of each part is also based on the base.
The working process and principle of the equipment are as follows: pressing a model selection button, and automatically adjusting the positions of a front end support of the turntable, a center support of the rear end of the turntable and a slewing bearing positioning device according to preset parameters of different products under the drive of a motor speed reducer, a linear guide rail, a ball screw and other transmission pairs; the manual feeding firstly slowly and stably drops the slewing bearing onto a slewing bearing positioning device, the servo propulsion mechanism pushes the slewing bearing after the slewing bearing is dropped, so that the center of the slewing bearing coincides with the center of the equipment, and then the servo propulsion mechanism withdraws a certain distance;
The 4 sets of rotary support positioning devices play a role in positioning and supporting the rotary support, and the rotary support is placed on the adjusting support steel balls of the 4 sets of rotary support positioning devices, and the adjusting support steel balls are universal balls and can roll randomly. Although the slewing bearing is heavy, the screw hole position can be manually adjusted with less effort; and because the slewing bearing positioning device is provided with the double-layer servo propulsion mechanism and the linear guide rail pair, various types of slewing bearings with different sizes can be positioned and supported, and the requirement of screwing various workpieces is met.
When the double-layer servo propulsion mechanism works, the double-layer servo propulsion mechanism is automatically adjusted to be in place according to the model of the slewing bearing product, and then the slewing bearing is hoisted on the double-layer servo propulsion mechanism. And manually hanging and placing the turntable, aligning a positioning pin hole at the rear end of the turntable with a positioning pin supported by the center of the rear end of the turntable, slowly placing down, aligning the front end of the turntable with a support rod assembly above the front end support of the turntable, ensuring that the turntable does not fall on the slewing bearing at the moment to have a gap of a few millimeters, manually adjusting and rotating the slewing bearing to align a light hole on the slewing bearing with a threaded hole on the turntable, and completely placing the turntable on the slewing bearing and the support rod assembly supported by the front end of the turntable.
The center support at the rear end of the turntable and the front end support of the turntable act together to position and support the turntable; meanwhile, the precise alignment and connection of the slewing bearing and the turntable are completed by matching with the slewing bearing positioning device. The center support at the rear end of the turntable and the front end support of the turntable can automatically adjust the positioning and supporting positions according to the different sizes of products so as to adapt to the requirements of various workpieces.
All bolts are manually screwed on a rotary table, a screwing start button is pressed after the screwing start button is completed, the rotary table is automatically rotated to a certain position under the drive of a motor speed reducer, 2 groups of single-shaft pre-tightening devices are automatically lifted under the drive of a cylinder, a screwing shaft head is aligned with the bolts to automatically screw the bolts, the bolts automatically descend after the pre-tightening is completed, the rotary table is automatically rotated to the position of the next bolt, the single-shaft pre-tightening devices are automatically lifted again to screw the bolts, the previous working process is repeated until all the bolts are screwed, and the pre-screwing work is completed. After the pre-tightening work is finished, the 2 groups of double-shaft tightening devices automatically run to a tightening position under the drive of the rotary table and the motor reducer, automatically rise and automatically start to tighten under the drive of the air cylinder, automatically descend after the tightening of one group of bolts is finished, automatically rotate to the next tightening position, automatically rise again to start to tighten, circulate until all bolts are tightened to be qualified, then the tightening shaft is withdrawn, the tightening work is finished, the workpiece is removed, and the tightening work of the next workpiece is performed.
The single-shaft pre-tightening device and the double-shaft tightening device are used for completing the most important pre-tightening and tightening work. The whole equipment is assembled by connecting the slewing bearing with the turntable through bolts. The single-shaft pre-tightening device is used for quickly tightening the bolts through the high-speed tightening shaft, so that all threads reach a smaller torque value; and then the final torque is screwed by a large-torque double-shaft screwing device, and the whole screwing time can be greatly saved by adopting the combined screwing mode (the rotation speed of the single-shaft pre-tightening device is high but the torque is small, and the rotation speed of the double-shaft screwing device is low but the torque is large). The positions of the single-shaft pre-tightening device and the double-shaft tightening device can be automatically adjusted through program control so as to adapt to the needs of various types.
The invention has high automation degree, simple operation and high efficiency, and 1 device can realize the screwing of the connecting bolts of the slewing bearing and the turntable of various varieties. By using the product, the inaccuracy of the moment in the bolt fastening process can be thoroughly solved, and the assembly quality of the connecting piece is greatly improved; the labor intensity of workers is reduced, and the damage to the hands and elbows of operators caused by pneumatic wrenches is overcome; the noise is low, the environment is protected, and occupational diseases caused by the pneumatic spanner to the ears of operators are avoided; the equipment is rapid to adjust and accurate to position, and the production beat is satisfied; the device can realize simultaneous tightening of 4 diagonal bolts. The problem that the assembly line is directly connected with the assembly line without overturning after the assembly is screwed up is solved;
Drawings
FIG. 1 is a schematic diagram of the operation of the apparatus
FIG. 2 is a front view of an automatic tightening apparatus for connecting bolts of a slewing bearing and a turntable;
FIG. 3 is a top view of an automated tightening apparatus for slewing bearing and turntable connection bolts;
FIG. 4 is a front view of a slewing bearing positioning device;
FIG. 5 is a side view of a slewing bearing positioning device;
FIG. 6 is a front view of the turntable rear center support;
FIG. 7 is a side view of the turntable rear center support;
FIG. 8 is a front view of five parts;
FIG. 9 is a side view of five pieces;
FIG. 10 is a top view of five small pieces;
FIG. 11 is a front view of the turntable front end support;
fig. 12 is a front end support side view of the turntable.
In the figure: an automatic tightening device for connecting bolts of A-turntable, B-slewing bearing, C-slewing bearing and turntable, a 1-slewing bearing positioning device, a 2-turntable rear end center support, a 3-base, a 4-single-shaft pre-tightening device, a 5-double-shaft tightening device, a 6-turntable, a 7-turntable front end support, an 8-adjustment supporting steel ball, a 9-positioning device, a 10-upper servo propulsion mechanism, an 11-upper bracket, a 12-second linear guide pair, a 13-lower servo propulsion mechanism, a 14-lower bracket, a 15-positioning pin, a 16-third linear guide pair, a 17-deflection cylinder, a 18-platform, a 19-lifting guide device, a 20-motor servo lifting mechanism, a 21-small bracket and a 22-pre-tightening shaft, 23-first bracket, 24-first lifting cylinder, 25-first lifting linear guide pair, 26-second bracket, 27-first transverse moving guide pair, 28-first servo propulsion device, 29-first support, 30-motor reducer, 31-tightening shaft, 32-third bracket, 33-second lifting cylinder, 34-second lifting linear guide pair, 35-fourth bracket, 36-second transverse moving guide pair, 37-second servo propulsion device, 38-second support, 40-slewing bearing gear bearing, 42-third support, 43-support bar assembly, 44-motor reducer lifting device, 45-guiding device, 46-fifth bracket, 47-fourth linear guide pair, 48-third servo propulsion device
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
Fig. 2 and 3 are a front view and a top view of an automatic tightening device for connecting bolts of a slewing bearing and a turntable, and the whole device is in a machine tool type structure, and comprises 4 groups of slewing bearing positioning devices 1, 1 groups of turntable rear end center supports 2, 1 groups of bases 3, 2 groups of single-shaft pre-tightening devices 4, 2 groups of double-shaft tightening devices 5, 1 group of turntable 6 and 1 group of turntable front end supports 7.
Fig. 1 is a schematic diagram of the operation of the apparatus when the connecting bolts of the slewing bearing and the turntable are tightened.
FIGS. 4 and 5 are front and side views, respectively, of a slewing bearing positioning device;
the 4 groups of slewing bearing positioning devices 1 are located on the ground at intervals of 90 degrees to form a circular contour; each group of slewing bearing positioning device 1 consists of an adjusting supporting steel ball 8, a positioning device 9, an upper servo propulsion mechanism 10, an upper bracket 11, a second linear guide rail pair 12, a lower servo propulsion mechanism 13 and a lower bracket 14. The adjusting support steel ball 8 and the upper servo propulsion mechanism 10 are fixed on the upper part of the upper bracket 11, and the positioning device 9 is fixed on the upper bracket 11 through a first linear guide rail pair and moves linearly under the action of the upper servo propulsion mechanism 10; the upper bracket 11 is fixed to the lower bracket 14 through the second linear guide rail pair 12, and moves linearly by the lower servo propulsion mechanism 13. In actual operation, the servo mechanism propulsion 13 pushes the lower bracket 11 and the upper servo propulsion mechanism 10 pushes the positioning device 9 to finish rough positioning of the corresponding workpieces according to the parameter sizes of the corresponding workpieces. The slewing bearing is hung on 4 adjusting supporting steel balls 8 of the 4 groups of slewing bearing positioning devices 1.
FIGS. 6 and 7 are front and side views, respectively, of a turntable rear center support;
The base 3 is positioned in the outer circumference formed by 4 groups of slewing bearing positioning devices 1, the center support 2 at the rear end of the turntable is fixedly connected to the base 3 through a small bracket 21 in an integral bolt way, and the center support 2 at the rear end of the turntable is used for supporting the rear end of the turntable; the center support 2 at the rear end of the turntable consists of a positioning pin 15, a third linear guide rail pair 16, a deflection cylinder 17, a platform 18, a lifting guide device 19, a motor servo lifting mechanism 20 and a small bracket 21. The small bracket 21 is a basic component of the center support 2 at the rear end of the turntable, the motor servo lifting mechanism 20 is fixed on the small bracket 21, the platform 18 positioned at the upper part of the motor servo lifting mechanism can be lifted according to the requirement, and the lifting guide device 19 with one end fixed on the platform 18 plays a guiding role when the platform 18 is lifted. The positioning pin 15, the third linear guide pair 16, and the displacement cylinder 17 are collectively referred to as a positioning device, and are integrally located on the stage 18. The positioning pin 15 is located above the third linear guide pair 16 and moves linearly by the displacement cylinder 17. The positioning pin 15 automatically adjusts the distance according to different turntable varieties and different positioning pin hole positions so as to realize the positioning of the turntable of different varieties.
Fig. 8, 9 and 10 are front, side and top views, respectively, of five pieces;
The 2 groups of single-shaft pre-tightening devices 4 and the 2 groups of double-shaft tightening devices 5 are fixed on the rotary table 6 through bolt connection, and are collectively called as small five pieces, the single-shaft pre-tightening devices 4 and the double-shaft tightening devices 5 are arranged at intervals of 90 degrees to form a circumferential profile, wherein the 2 groups of single-shaft pre-tightening devices 4 are opposite, and the 2 groups of double-shaft tightening devices 5 are opposite. The turntable 6 is connected with the base 3 through a slewing bearing gear bearing 40, and the turntable 6 can rotate on the base 3 under the drive of a motor reducer 30.
Each group of single-shaft pre-tightening devices 4 consists of a pre-tightening shaft 22, a first bracket 23, a first lifting cylinder 24, a first lifting linear guide rail pair 25, a second bracket 26, a first transverse moving guide rail pair 27, a first servo propulsion device 28 and a first support 29. The pre-tightening shaft 22 is fixed on a first bracket 23, and the first bracket 23 is connected with a second bracket 26 through a first lifting linear guide rail pair 25; the tail of the first lifting cylinder 24 is fixed on the second bracket 26, the head of a cylinder rod of the first lifting cylinder 24 is connected with the first bracket 23, the first lifting cylinder 24 can drive the first bracket 23 to lift up and down, and the pre-tightening shaft 22 is provided with pre-tightening equipment which can pre-tighten bolts. The first support 29 is connected to the turntable 6, the first pair of lateral movement rails 27 is located on the first support 29 and can be radially moved under the drive of the first servo propulsion device 28, and the second support 26 is located on the first pair of lateral movement rails 27. The radial movement of the first transverse moving guide rail pair 27 finally realizes the pre-tightening work of bolts on different reference circle slewing bearings.
Each group of double-shaft tightening devices 5 consists of a tightening shaft 31, a third bracket 32, a second lifting cylinder 33, a second lifting linear guide rail pair 34, a fourth bracket 35, a second transverse moving guide rail pair 36, a second servo propulsion device 37 and a second support 38. The tightening shaft 31 is fixed on a third bracket 32, and the third bracket 32 is connected with a fourth bracket 35 through a second lifting linear guide rail pair 34; the tail part of the second lifting cylinder 33 is fixed on the fourth bracket 35, the head part of a cylinder rod of the second lifting cylinder 33 is connected with the third bracket 32, the second lifting cylinder 33 can drive the third bracket 32 to lift up and down, and the tightening work is realized through equipment on a tightening shaft; the second support 38 is connected to the turntable 6, the second transverse moving rail pair 36 is located on the second support 38 and can move radially under the drive of the second servo propulsion device 37, and the fourth support 35 is located on the second transverse moving rail pair 36. The radial movement of the second transverse moving guide rail pair 36 finally realizes the screwing work of bolts on different reference circle slewing bearings.
Fig. 11 and 12 are front and side views of the turntable front end support.
The turntable front end support 7 is used to support the turntable front end, which sits on the ground. The device consists of a third support 42, a support rod assembly 43, a motor speed reducer lifting device 44, a guide device 45, a fifth bracket 46, a fourth linear guide rail pair 47 and a third servo propulsion device 48. The third support 42 is a basic component of the turntable front end support 7, the fourth linear guide rail pair 47 is positioned on the third support 42, the fifth bracket 46 is positioned on the fourth linear guide rail pair 47, and the third bracket is linearly moved under the pushing of the servo propulsion device 48 so as to adapt to the support of the turntable with different lengths. The motor speed reducer lifting device 44 is fixed to the fifth bracket 46, and lifts and lowers the support rod assembly 43 by the guiding action of the guiding device 45. The lifting is based on the height of the front end of the turntable so as to adapt to the support of the front end parts of the turntable with different heights. The operation of the motor reducer elevator 44 and the third servo propulsion device 48 is automatically adjusted in place after the workpiece is selected by the workpiece selection button.
The whole equipment has the following working process: according to the corresponding model of workpiece, pressing a parameter selection button and starting equipment, and automatically adjusting all parts of the slewing bearing positioning device 1, the turntable rear end center support 2, the single-shaft pre-tightening device 4, the double-shaft tightening device 5, the turntable 6 and the turntable front end support 7 into place according to a preset parameter program; manually hoisting the slewing bearing to the slewing bearing positioning device 1, hoisting the turntable after the completion, aligning a positioning pin hole at the rear end of the turntable with a positioning pin 15 of a center support 2 at the rear end of the turntable, slowly dropping the turntable after the alignment and ensuring that the front end of the turntable is also dropped on a supporting rod assembly 43 of a front end support 7 of the turntable, thus ensuring the accurate positioning of the turntable, but at the moment, the rear end surface of the turntable is not dropped on the slewing bearing in place before so as to have a gap of a few millimeters, manually rotating the slewing bearing (the slewing bearing is integrally placed on an adjusting supporting steel ball 8 of the slewing bearing positioning device 1 and can be easily rotated by a human hand), aligning the light holes on the slewing bearing with threaded holes on the turntable, then placing the turntable on the slewing bearing after all the light holes are aligned with the threaded holes, manually taking all bolts with 2-3 circles, pressing down a tightening button after all the bolts, automatically lifting the aligning bolts to start high-speed pre-tightening, and lowering the single-shaft pre-tightening device 4 after the completion of one bolt pre-tightening device, driving the slewing bearing 6 to rotate the slewing bearing 6 so as to drive the turntable 6 to rotate so as to drive the single-shaft pre-tightening device 4 to rotate until all the bolts to be manually and tightly and stopped after the tightening the bolts are manually and completely; the double-shaft tightening device 5 automatically lifts the alignment bolts to start final tightening after the pre-tightening is completed, stops and descends until the final torque value is reached, and repeats the previous tightening operation after the automatic rotation to the next tightening point until all bolts are tightened. At this time, the whole workpiece is manually lifted away, and the whole working process is finished.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (1)
1. The utility model provides an automatic equipment of screwing up of slewing bearing and revolving stage connecting bolt, this equipment wholly is lathe type structure, by 4 group slewing bearing positioner (1), 1 group revolving stage rear end center support (2), 1 group base (3), 2 group unipolar preloading device (4), 2 group biax screw up device (5), 1 group revolving stage (6) and 1 group revolving stage front end support (7) group constitute its characterized in that:
The 4 groups of slewing bearing positioning devices (1) play a role in positioning and supporting slewing bearings and are located on the ground at 90-degree intervals, and each group of slewing bearing positioning devices (1) consists of an adjusting supporting steel ball (8), a positioning device (9), an upper servo propulsion mechanism (10), an upper bracket (11), a first linear guide rail pair, a second linear guide rail pair (12), a lower servo propulsion mechanism (13) and a lower bracket (14); the adjusting support steel ball (8), the first linear guide rail pair and the upper servo propulsion mechanism (10) are fixed on the top of the upper bracket (11), the positioning device (9) is connected with the first linear guide rail pair, and the upper servo propulsion mechanism (10) moves linearly; the upper bracket (11) is fixed on the lower bracket (14) through a second linear guide rail pair (12) and moves linearly under the action of the lower servo propulsion mechanism (13); the 4 adjusting support steel balls (8) of the 4 groups of slewing bearing positioning devices (1) jointly support slewing bearings, the adjusting support steel balls (8) are universal balls and can roll arbitrarily, and the slewing bearing positioning devices (1) can position and support various types of slewing bearings with different sizes;
the base (3) is positioned in the outer circumference formed by 4 groups of slewing bearing positioning devices (1), the center support (2) at the rear end of the turntable is fixed on the base (3) in a bolt connection mode through a small bracket (21), and the center support (2) at the rear end of the turntable is used for supporting the rear end of the turntable; the center support (2) at the rear end of the turntable consists of a locating pin (15), a third linear guide rail pair (16), a deflection cylinder (17), a platform (18), a lifting guide device (19), a motor servo lifting mechanism (20) and a small bracket (21); the small support (21) is a basic part of the center support (2) at the rear end of the turntable, the motor servo lifting mechanism (20) is fixed on the small support (21), the motor servo lifting mechanism (20) lifts and lowers the platform (18) positioned at the upper part of the motor servo lifting mechanism according to the requirement, and the lifting guide device (19) with one end fixed on the platform (18) plays a guiding role when the platform (18) lifts and lowers; the positioning pin (15), the third linear guide rail pair (16) and the displacement cylinder (17) are collectively called as a positioning device, and the whole positioning device is fixed on the upper part of the platform (18); the positioning pin (15) is positioned on the third linear guide rail pair (16) and moves linearly under the action of the displacement cylinder (17);
The turntable front end support (7) is used for supporting the turntable front end and is located on the ground; the device consists of a third support (42), a support rod assembly (43), a motor speed reducer lifting device (44), a guiding device (45), a fifth bracket (46), a fourth linear guide rail pair (47) and a third servo propulsion device (48); the third support (42) is a basic component of the front end support (7) of the turntable, the fourth linear guide rail pair (47) is fixed on the third support (42), the fifth support (46) is positioned on the fourth linear guide rail pair (47) and moves linearly under the pushing of the servo propulsion device (48) so as to adapt to the turntable requirements of different lengths; the motor speed reducer lifting device (44) is fixed on the fifth bracket (46), and lifts the support rod assembly (43) under the guiding action of the guiding device (45);
The center support (2) at the rear end of the turntable and the front end support (7) of the turntable work together to position and support the turntable; meanwhile, the precise alignment and connection of the slewing bearing and the turntable are completed by matching with the slewing bearing positioning device (1), and the center support (2) at the rear end of the turntable and the front end support (7) of the turntable can automatically adjust positions according to different sizes and dimensions of products;
The 2 groups of single-shaft pre-tightening devices (4) and the 2 groups of double-shaft tightening devices (5) are fixed on the rotary table (6) in a bolt connection mode, and are collectively called as small five pieces; the single-shaft pre-tightening device (4) and the double-shaft tightening device (5) are arranged at an interval of 90 degrees, wherein 2 groups of single-shaft pre-tightening devices (4) are opposite, and 2 groups of double-shaft tightening devices (5) are opposite; the rotary table (6) is connected with the base (3) through a slewing bearing gear bearing (40), and the rotary table (6) can rotate on the base (3) under the drive of a motor speed reducer (30);
Each group of single-shaft pre-tightening devices (4) consists of a pre-tightening shaft (22), a first bracket (23), a first lifting cylinder (24), a first lifting linear guide rail pair (25), a second bracket (26), a first transverse moving guide rail pair (27), a first servo propulsion device (28) and a first support (29); the pre-tightening shaft (22) is fixed on the first bracket (23), and the first bracket (23) is connected with the second bracket (26) through the first lifting linear guide rail pair (25); the tail part of the first lifting cylinder (24) is fixed on the second bracket (26), the head part of the first lifting cylinder (24) is connected with the first bracket (23), the first lifting cylinder (24) can drive the first bracket (23) to lift up and down, and a pre-tightening device is arranged on the pre-tightening shaft (22) and can pre-tighten the bolt; the first support (29) is fixed on the rotary table (6), the first transverse moving guide rail pair (27) is fixed on the first support (29) and can move under the drive of the first servo propulsion device (28), the second support (26) is positioned on the first transverse moving guide rail pair (27), and the pre-tightening work of bolts on different reference circle rotary supports can be realized through the movement of the first transverse moving guide rail pair (27);
Each group of double-shaft tightening devices (5) consists of a tightening shaft (31), a third bracket (32), a second lifting cylinder (33), a second lifting linear guide rail pair (34), a fourth bracket (35), a second transverse moving guide rail pair (36), a second servo propulsion device (37) and a second support (38); the tightening shaft (31) is fixed on a third bracket (32), and the third bracket (32) is connected with a fourth bracket (35) through a second lifting linear guide rail pair (34); the tail part of the second lifting cylinder (33) is fixed on the fourth bracket (35), the head part of the second lifting cylinder (33) is connected with the third bracket (32), the second lifting cylinder (33) can drive the third bracket (32) to lift up and down, and the screw tightening is realized through equipment on the tightening shaft (31); the second support (38) is fixed on the rotary table (6), the second transverse moving guide rail pair (36) is positioned on the second support (38) and can move under the drive of the second servo propulsion device (37), and the fourth support (35) is positioned on the second transverse moving guide rail pair (36); the screwing work of bolts on different reference circle slewing bearings can be realized through the movement of the second transverse moving guide rail pair (36);
The single-shaft pre-tightening device (4) and the double-shaft tightening device (5) sequentially complete pre-tightening and tightening work of the connecting bolts, the slewing bearing is connected with the turntable to complete assembly, the single-shaft pre-tightening device (4) is used for quickly pre-tightening the bolts through the high-speed tightening shaft, the torque of the double-shaft tightening device (5) is larger, the final torque tightening is completed, the rotating speed of the single-shaft pre-tightening device (4) is high, the torque of the double-shaft tightening device (5) is low, the assembly time can be saved in a combined mode, and the positions of the single-shaft pre-tightening device (4) and the double-shaft tightening device (4) are automatically adjusted through program control so as to adapt to the requirements of various types.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN116214427B (en) * | 2023-03-03 | 2024-03-29 | 中国核电工程有限公司 | Continuous pipe installation device and continuous pipe installation method |
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| CN216151660U (en) * | 2021-06-08 | 2022-04-01 | 大连嘉禾自控技术有限公司 | Automatic screwing equipment for connecting bolt of slewing bearing and rotary table |
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| JP5281366B2 (en) * | 2008-11-05 | 2013-09-04 | 三菱重工業株式会社 | Bolt fastening device |
| CN101890635B (en) * | 2010-06-28 | 2012-10-24 | 三一电气有限责任公司 | Bolt tightening machine for connecting slewing bearing and hub |
| CN102303236B (en) * | 2011-06-28 | 2013-06-05 | 徐工集团工程机械股份有限公司 | Positioner |
| CN102886673A (en) * | 2012-10-30 | 2013-01-23 | 天津市福臻机电工程有限公司 | Multi-axis rotating production equipment used for part assembling of reduction gear |
| CN203993055U (en) * | 2014-06-10 | 2014-12-10 | 广州明珞汽车装备有限公司 | A kind of high-speed flexible twin shaft tightening machine |
| CN105436872B (en) * | 2014-10-13 | 2018-02-16 | 徐州重型机械有限公司 | A kind of rotation of rotary table supporting assembly equipment and method |
| CN107030472B (en) * | 2017-06-21 | 2019-07-05 | 沈阳清林机械有限公司 | Wheel is to vertical disassembler |
| CN110370014A (en) * | 2019-07-16 | 2019-10-25 | 徐州徐工矿业机械有限公司 | A kind of large excavator pivoting support guiding assembly method |
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