CN113894490A - Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack - Google Patents
Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack Download PDFInfo
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- CN113894490A CN113894490A CN202111231572.7A CN202111231572A CN113894490A CN 113894490 A CN113894490 A CN 113894490A CN 202111231572 A CN202111231572 A CN 202111231572A CN 113894490 A CN113894490 A CN 113894490A
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- lifting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The invention discloses a device for realizing lifting and overturning of a large-sized workpiece by utilizing a gear rack, which is characterized by comprising a rack, a driving system, a lifting mechanism, an overturning mechanism, a locking mechanism, an overturning platform and a PLC (programmable logic controller) control system.
Description
Technical Field
The invention belongs to the technical field related to machining, and particularly relates to a device for lifting and overturning a large-sized workpiece by using a gear rack.
Background
With the development of social economy and the progress of industrial manufacturing, the production and manufacturing of large equipment are increasingly accelerated, so the demand of tools in the manufacturing process of the large equipment is continuously increased. Many large-scale equipment are formed by welding, but welding stress deformation cannot be avoided, and at present, in order to weaken the influence of the welding stress deformation on a workpiece, a plurality of welding processes are programmed, wherein the most effective method for the large-scale workpiece is to stop welding if the welding deformation is found in the welding process, and then turn over the workpiece to start welding from the other side so as to counteract the welding deformation caused by the previous operation.
If large-scale work piece does not have special frock equipment, only rely on the manpower to be difficult to realize, and many current solutions just adopt crane or a plurality of lifting hook cooperation operation, and the cooperation is improper, the hoist and mount mode is improper, often causes the work piece accident such as drop, because the work piece is great, heavier, often can cause the work piece to destroy after dropping, peripheral equipment to destroy, even cause the casualties accident. The lifting hook operation is usually through wire rope flexible coupling, and hoist and mount and the upset process rock, have aggravated the danger of upset process.
Disclosure of Invention
In order to solve the technical problems, in order to avoid the danger brought by the turning process of using a crane and reduce the occurrence of casualty accidents of personnel, the invention provides the following technical scheme:
a device for realizing lifting and overturning of a large-sized workpiece by utilizing a gear rack comprises a rack 1, a driving system 2, a lifting mechanism 3, an overturning mechanism 4, a locking mechanism 5, an overturning platform 6 and a PLC (programmable logic controller) control system 7;
the machine frame 1 is respectively composed of a first support frame 12 and a second support frame 13, a driving system 2 is arranged at the bottom of the machine frame 1, two groups of lifting mechanisms 3 are arranged on the first support frame 12 and the second support frame 13 respectively, a turnover mechanism 4 is arranged on the first support frame 12, a turnover platform 6 is connected to a slide block 34 through a slewing bearing 61, and a PLC control system 7 is respectively electrically connected with the driving system 2, the turnover mechanism 4 and a locking mechanism 5;
the driving system 2 comprises a motor 21 and a speed reducer 22 connected with the motor 21, and a coupler 23 and a transmission shaft 24 which are respectively connected in sequence are arranged on two sides of the speed reducer 22;
the lifting mechanism 3 comprises a lifter 31, a screw-nut pair 32, a lifting guide rail 33 and a sliding block 34, the tail end of the transmission shaft 24 is connected with the input end of the lifter 31, the screw-nut pair 32 is connected with the output end of the lifter 31, the screw-nut pair 32 and the guide rail 33 are connected on the frame 1, a linear bearing 35 is arranged in the sliding block 34, the sliding block 34 is movably connected on the lifting guide rail 33 through a through hole, and a nut of the screw-nut pair 32 is fixedly connected in a mounting hole at the bottom of the sliding block 34; a rotary support 61 is connected to the slide block 34;
the turnover mechanism 4 comprises a link mechanism 41, a gear rack mechanism 42 and a first piston cylinder 43, the gear rack mechanism 42 is movably connected with the link mechanism 41, the link mechanism 41 is hinged on the rack 1 through a shaft, and guide grooves 44 are arranged above and below the gear rack mechanism 42;
the locking mechanism 5 comprises a second piston cylinder 51, a bolt 52, a bolt seat 53 and a locking machine seat 54 which are connected in sequence, the locking machine seat 54 is connected with the slide block 34, and the bolt seat 53 is connected with the overturning platform 6.
In the further scheme, the method comprises the following steps of,
a brake and an encoder are provided in the motor 21.
In the further scheme, the method comprises the following steps of,
the drive system 2 may be replaced by a hydraulic system.
In the further scheme, the method comprises the following steps of,
the linkage 42 is provided with a mechanical stop 45.
In the further scheme, the method comprises the following steps of,
an angle sensor can be rigidly connected to the center of the rotating shaft of the pivoting support 61.
In the further scheme, the method comprises the following steps of,
the number of the lifting mechanisms 3 can be at least two even groups, and the lifting mechanisms are symmetrically distributed on the first supporting frame 12 and the second supporting frame 13.
In the further scheme, the method comprises the following steps of,
an upper limit component 81 and a lower limit component 82 are also respectively arranged above and below the machine frame 1.
The beneficial effect of adopting above-mentioned technical scheme is:
1. the device can realize lifting and overturning of a large-sized workpiece by 180 degrees or other specified angles, realize remote control of handle operation and preset programs to realize one-key overturning, and greatly improve the working efficiency and safety;
2. the overturning is realized by the self weight in the descending process and the driving of the hoister in a matching way with the gear rack mechanism, so that the energy consumption is reduced, and the cost is saved;
3. the braking of overturning the workpiece in the overturning process is carried out by adopting the meshing of the gear and the rack, the structure is simple and stable, and the control is easy.
4. The meshing and separating processes of the gear rack are realized by combining the piston cylinder with the connecting rod mechanism, so that the environment is not polluted, the noise pollution is reduced, and the harm to the health of operators is reduced.
5. The turnover locking is realized by combining the piston cylinder with the bolt, and the turnover locking device is simple and reliable in structure and easy to control.
Drawings
FIG. 1 is a schematic view of the structure of the device of the present invention;
FIG. 2 is a schematic view of the driving system of the device of the present invention;
FIG. 3 is a schematic view of the turnover mechanism of the device of the present invention during operation;
FIG. 4 is a schematic view of the turnover mechanism of the device of the present invention when the turnover mechanism is not in operation
FIG. 5 is a schematic structural view of the locking mechanism of the device of the invention when locked;
FIG. 6 is a schematic structural view of the device of the present invention when the locking mechanism is unlocked;
FIG. 7 is an enlarged view of the device of the present invention in a flipped state;
FIG. 8 is a schematic view of the structure and connection of the worktable of the apparatus;
FIG. 9 is a sectional structural view of the device of the invention;
FIG. 10 is an enlarged view of the structure of the limiting component of the device of the present invention;
FIG. 11 is a schematic diagram of the operation of the inventive apparatus;
1. a frame; 12. a first support frame; 13. a second support frame;
2. a drive system; 21. a motor; 22. a speed reducer; 23. a coupling; 24. a drive shaft;
3. a lifting mechanism; 31. an elevator; 32. a screw-nut pair; 33. a lifting guide rail; 34. a slider; 35. a linear bearing;
4. a turnover mechanism; 41. a link mechanism; 42. a rack and pinion mechanism; 43. a first piston cylinder; 44. a guide groove; 45. mechanical limiting;
5. a locking mechanism; 51. a second piston cylinder; 52. a bolt; 53. a bolt seat; 54. locking the base;
6. overturning the platform; 61. a slewing bearing;
7. a PLC control system; 81. an upper limit component; 82. a lower limit component;
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention,
detailed description of the preferred embodiment 1
As shown in fig. 1, a device for realizing lifting and overturning of a large-sized workpiece by using a gear rack, comprising a frame 1, a driving system 2, an elevating mechanism 3, an overturning mechanism 4, a locking mechanism 5, an overturning platform 6 and a PLC control system 7, wherein the frame 1 is respectively composed of a first support frame 12 and a second support frame 13, the driving system 2 is arranged at the bottom of the frame 1, the number of the elevating mechanism 3 is two, the elevating mechanism 3 is respectively arranged on the first support frame 12 and the second support frame 13, the overturning mechanism 4 is arranged on the first support frame 12, the overturning platform 6 is connected on a slide block 34 through a slewing bearing 61, and the PLC control system 7 is respectively connected with the driving system 2, the overturning mechanism 4 and the locking mechanism 5.
As shown in fig. 2, the driving system 2 includes a motor 21 and a speed reducer 22 connected to the motor 21, and a coupling 23 and a transmission shaft 24 respectively connected in sequence are disposed on two sides of the speed reducer 22;
referring to fig. 1 and 2, the lifting mechanism 3 includes a lifter 31, a screw nut pair 32, a lifting guide rail 33 and a slider 34, the end of the transmission shaft 24 is connected with the input end of the lifter 31, the screw nut pair 32 is connected with the output end of the lifter 31, the screw nut pair 32 and the guide rail 33 are connected to the frame 1, a linear bearing 35 is arranged in the slider 34, the slider 34 is movably connected to the lifting guide rail 33 through a through hole, and a nut of the screw nut pair 32 is fixedly connected to a mounting hole at the bottom of the slider 34; a rotary support 61 is connected to the slide block 34;
as shown in fig. 3 and 4, the turnover mechanism 4 includes a link mechanism 41, a rack and pinion mechanism 42 and a first piston cylinder 43, the rack and pinion mechanism 42 is movably connected with the link mechanism 41, the link mechanism 41 is hinged on the frame 1 through a shaft, and guide grooves 44 are arranged above and below the rack and pinion mechanism 42;
as shown in fig. 5, 6 and 8, the locking mechanism 5 comprises a second piston cylinder 51, a latch 52, a latch seat 53 and a locking base 54 which are connected in sequence, the locking base 54 is connected with the slide block 34, and the latch seat 53 is connected with the overturning platform 6. The locking state is as follows: the latch 52 enters the latch seat 53 bore. An angle sensor is rigidly connected to the center of the rotating shaft of the rotating support 61, and an upper limit component 81 and a lower limit component 82 are respectively arranged above and below the frame 1.
As shown in fig. 9 and 10, the upper limit component 81 and the lower limit component 82 have the same structure, and are composed of a limit switch in the existing product and a common bump block arranged on the sliding block and moving along with the limit switch.
Working principle, as shown in fig. 11, the working principle and method of the device are as follows:
(1) placing a large-sized welding workpiece to be machined on the overturning platform 6, fixing and clamping the large-sized welding workpiece by using a matched clamp, confirming that the locking mechanism 5 is in a locking state, and returning to a safe operation area after confirming that the large-sized welding workpiece is reliably fixed by an operator;
(2) as shown in fig. 1 and 2, an operator operates the control handle to start the driving system 2, the motor 21 drives the screw-nut pair 32 through the speed reducer 22 and the elevator 31 in sequence, and the rotary motion of the screw is converted into the translation of the nut on the screw, so as to drive the slider 34 connected with the nut to move upwards along the lifting guide rail 33, and further drive the overturning platform 6 rigidly connected with the slider 34 to move upwards;
(3) when the overturning platform 6 runs to the top and contacts the limit switch in the upper limit component 81 along with the running collision block, the motor 21 is braked and suspended;
(4) as shown in fig. 3, the turnover mechanism 4 is started, the first piston cylinder 43 extends out to drive the link mechanism 41 to move, so that the rack is pushed to translate and is completely meshed with the external teeth of the slewing bearing 61;
(5) the locking mechanism 5 is opened: the second piston cylinder 51 with the latch 52 is retracted and the latch 52 is disengaged from the pin hole of the latch seat 53 mounted on the roll-over platform 6, as shown in fig. 5 (shown schematically in a locked state);
(6) the motor 21 is released and starts to rotate reversely, and the overturning platform 6 starts to overturn through the meshing transmission of the gear and the rack under the action of self weight and lifting drive until the overturning platform is overturned to a set angle;
(7) the motor 21 is paused and braked;
(8) the locking mechanism 5 locks: a second piston cylinder 51 with a bolt 52 extends out, the bolt 52 is inserted into a pin hole on the overturning platform 6, and the overturning platform 6 is locked;
(9) as shown in fig. 7 and 9, the turnover mechanism 4 is activated, the first piston cylinder 43 is retracted, and the link mechanism 41 is driven to move, so that the rack is pushed to translate and is completely separated from the external teeth of the pivoting support 61;
(10) the motor 21 is released and starts to rotate reversely, the overturning platform 6 descends to the lower limiting component 82 under the action of self weight and lifting drive, and the motor 21 stops and brakes to complete overturning work of the workpiece.
The motor 21 is a variable frequency motor (capable of rotating forward and backward) internally provided with an electrically connected encoder, can realize speed regulation within a certain range, and simultaneously the system can judge in real time according to feedback data of the encoder that the lifting slide block rises and falls to a specified height as a lifting platform;
the device driving system 2 is designed with a brake, or a brake is arranged in the motor 21, so as to ensure timely and reliable braking in the lifting process;
reliable limit switch assemblies 8 are designed in stroke ranges on mechanisms of lifting, locking, overturning and the like of the device and are associated with a control system;
as shown in fig. 4, the link mechanism 42 is provided with a mechanical limit 45, which can not only prevent the mechanical failure of gear rack tooth disengagement, but also bear the acting force of the link mechanism on the link mechanism;
the PLC control system 7 controls the motor 21 of the drive system 2 and the electromagnetic control valves and the like associated with the first piston cylinder 43 and the second piston cylinder 51. The controller model of the PLC control system 7 is Mitsubishi fx5 u.
The first piston cylinder 43 and the second piston cylinder 51 have a pressure maintaining function to prevent mechanical failure due to pressure relief;
as shown in fig. 1, the device can be designed with a high-precision angle sensor, and can monitor the angle of the turnover platform 6 in real time and feed back a signal to the PLC control system 7.
The device can lift and turn a large-sized workpiece, electric automation operation control is realized, an operator can be far away from a dangerous area of equipment, the operation is carried out in a safe area, the injury to the operator can be avoided, the lifting is carried out by using the lifter, the turning and the loading are carried out through the gear and the rack, and the working efficiency is improved. Through a drive power supply, both can realize the lift of large-scale work piece, can also realize the upset to the work piece simultaneously, great reduction in the course of the work to the loss of energy.
Example 2
On the basis of embodiment 1, in which the drive system 2 can be replaced by a hydraulic system, it is not limited to a power supply manner.
Example 3
On the basis of embodiment 1, the number of the lifting mechanisms 3 can be an even number of not less than two groups, and the lifting mechanisms are symmetrically distributed on the first support frame 12 and the second support frame 13, so that the lifting mechanisms can be increased according to actual production work, and the lifting mechanisms are more stable in operation (lifting or overturning) and have larger load.
While the invention has been described with reference to certain embodiments, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention, and in particular, features of various embodiments of the invention may be combined in any manner without departing from the technical conflict, the combination not being exhaustive in the invention for reasons of brevity and resource saving. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed herein, but that the invention will include the claims appended hereto.
Claims (7)
1. A device for realizing lifting and overturning of a large-sized workpiece by utilizing a gear rack is characterized by comprising a rack (1), a driving system (2), a lifting mechanism (3), an overturning mechanism (4), a locking mechanism (5), an overturning platform (6) and a PLC control system (7);
the rack (1) is respectively composed of a first support frame (12) and a second support frame (13), the driving system (2) is arranged at the bottom of the rack (1), two groups of lifting mechanisms (3) are arranged on the first support frame (12) and the second support frame (13) respectively, the turnover mechanism (4) is arranged on the first support frame (12), the turnover platform (6) is connected to the sliding block (34) through a slewing bearing (61), and the PLC control system (7) is respectively electrically connected with the driving system (2), the turnover mechanism (4) and the locking mechanism (5);
the driving system (2) comprises a motor (21) and a speed reducer (22) connected with the motor (21), and a coupler (23) and a transmission shaft (24) which are sequentially connected are arranged on two sides of the speed reducer (22);
the lifting mechanism (3) comprises a lifter (31), a screw-nut pair (32), a lifting guide rail (33) and a sliding block (34), the tail end of the transmission shaft (24) is connected with the input end of the lifter (31), the screw-nut pair (32) is connected with the output end of the lifter (31), the screw-nut pair (32) and the guide rail (33) are connected onto the rack (1), a linear bearing (35) is arranged in the sliding block (34), the sliding block (34) is movably connected onto the lifting guide rail (33) through a through hole, and a nut of the screw-nut pair (32) is fixedly connected into a mounting hole at the bottom of the sliding block (34); a rotary support (61) is connected to the sliding block (34);
the turnover mechanism (4) comprises a connecting rod mechanism (41), a gear rack mechanism (42) and a first piston cylinder (43), the gear rack mechanism (42) is movably connected with the connecting rod mechanism (41), the connecting rod mechanism (41) is hinged on the rack (1) through a shaft, and guide grooves (44) are arranged above and below the gear rack mechanism (42);
the locking mechanism (5) comprises a second piston cylinder (51), a bolt (52), a bolt seat (53) and a locking machine seat (54) which are sequentially connected, the locking machine seat (54) is connected with the sliding block (34), and the bolt seat (53) is connected with the overturning platform (6).
2. The device for realizing the lifting and overturning of the large-scale workpiece by utilizing the gear rack as claimed in claim 1 is characterized in that a brake and an encoder are arranged in the motor (21).
3. The device for realizing the lifting and overturning of the large workpiece by utilizing the gear rack as claimed in claim 1 is characterized in that the driving system (2) can be replaced by a hydraulic system.
4. The device for realizing the lifting and overturning of the large-sized workpiece by utilizing the gear rack as claimed in claim 1 is characterized in that a mechanical limit (45) is arranged on the connecting rod mechanism (42).
5. The device for realizing the lifting and overturning of the large workpiece by utilizing the gear rack as claimed in claim 2 is characterized in that an angle sensor can be rigidly connected to the rotating center of the slewing bearing (61).
6. The device for realizing the lifting and overturning of the large-scale workpiece by utilizing the gear rack as claimed in claim 1 is characterized in that the number of the lifting mechanisms (3) can be an even number of not less than two groups, and the lifting mechanisms are symmetrically distributed on the first supporting frame (12) and the second supporting frame (13).
7. The device for realizing the lifting and overturning of the large workpiece by utilizing the gear rack as claimed in claim 1 is characterized in that an upper limit component (81) and a lower limit component (82) are further respectively arranged above and below the machine frame (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111231572.7A CN113894490A (en) | 2021-10-22 | 2021-10-22 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111231572.7A CN113894490A (en) | 2021-10-22 | 2021-10-22 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
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| Publication Number | Publication Date |
|---|---|
| CN113894490A true CN113894490A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111231572.7A Withdrawn CN113894490A (en) | 2021-10-22 | 2021-10-22 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
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| CN (1) | CN113894490A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714128A (en) * | 2022-05-09 | 2022-07-08 | 扬州市职业大学(扬州开放大学) | Turning device for mechanical and automatic processing of plates |
| CN115042440A (en) * | 2022-05-20 | 2022-09-13 | 臻越智能装备(佛山)有限公司 | Welding device for edge-covering welding |
| CN115625471A (en) * | 2022-10-31 | 2023-01-20 | 陕西风润智能制造研究院有限公司 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
| CN118046150A (en) * | 2024-04-11 | 2024-05-17 | 潍坊鸿洋机械科技有限公司 | Automobile exhaust pipe manufacturing, processing and welding device |
-
2021
- 2021-10-22 CN CN202111231572.7A patent/CN113894490A/en not_active Withdrawn
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114714128A (en) * | 2022-05-09 | 2022-07-08 | 扬州市职业大学(扬州开放大学) | Turning device for mechanical and automatic processing of plates |
| CN115042440A (en) * | 2022-05-20 | 2022-09-13 | 臻越智能装备(佛山)有限公司 | Welding device for edge-covering welding |
| CN115042440B (en) * | 2022-05-20 | 2023-08-04 | 臻越智能装备(佛山)有限公司 | Welding device for edge-covering welding |
| CN115625471A (en) * | 2022-10-31 | 2023-01-20 | 陕西风润智能制造研究院有限公司 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
| CN115625471B (en) * | 2022-10-31 | 2024-05-28 | 陕西风润智能制造研究院有限公司 | Device for realizing lifting and overturning of large-sized workpiece by utilizing gear rack |
| CN118046150A (en) * | 2024-04-11 | 2024-05-17 | 潍坊鸿洋机械科技有限公司 | Automobile exhaust pipe manufacturing, processing and welding device |
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Application publication date: 20220107 |
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