CN113649463A - Positioning fixture for steel processing - Google Patents
Positioning fixture for steel processing Download PDFInfo
- Publication number
- CN113649463A CN113649463A CN202111052918.7A CN202111052918A CN113649463A CN 113649463 A CN113649463 A CN 113649463A CN 202111052918 A CN202111052918 A CN 202111052918A CN 113649463 A CN113649463 A CN 113649463A
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- base
- steel pipe
- positive
- face
- sides
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 71
- 239000010959 steel Substances 0.000 title claims abstract description 71
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 24
- 238000005096 rolling process Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 description 6
- 230000001771 impaired effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000819 phase cycle Methods 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000272168 Laridae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/28—Perforating, i.e. punching holes in tubes or other hollow bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
- B21D28/04—Centering the work; Positioning the tools
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manipulator (AREA)
Abstract
The invention discloses a positioning fixture for steel processing, which comprises a base, wherein one side of the upper end surface of the base is slidably connected with at least two control consoles, the upper end surfaces of the two control consoles are respectively provided with a supporting plate, the upper end of the supporting plate is provided with a steel pipe, the upper end surfaces of the control consoles are positioned on two sides of the supporting plate and are respectively provided with a sliding chute, a sliding block is inserted in the sliding chute, the upper end of the sliding block is provided with a screw sleeve, one side of the upper end surface of the control consoles is provided with an asynchronous motor, the rotating shaft end of the asynchronous motor is provided with a bidirectional screw rod, two ends of the bidirectional screw rod are inserted in the two screw sleeves, the upper end of the screw sleeve is provided with an electric telescopic rod, one side of the telescopic end of the electric telescopic rod is provided with a clamping plate, and the two clamping plates are positioned on two sides of the upper end of the steel pipe. Move about through two-way lead screw drive splint, electronic telescopic link control splint reciprocate, reach the interval between two splint of big or small adjustment according to the steel pipe, and the convenience is adjusted the location centre gripping fixed to the steel pipe of equidimension not.
Description
Technical Field
The invention belongs to the technical field of steel processing, and particularly relates to a positioning clamp for steel processing.
Background
A steel pipe is a steel material having a hollow cross section, the length of which is much greater than the diameter or circumference. Steel pipes are not only used for transporting fluids and powdery solids, exchanging heat energy, manufacturing mechanical parts and containers, but also are economical steels.
Current positioning fixture for steel processing places the steel pipe material between two splint, extrudees each other through removing the splint, fixes a position the steel pipe, adds man-hour to the steel pipe, prevents that the steel pipe from taking place the skew, leads to steel pipe processing inconvenient, has the weak point to have: this positioning fixture can cause the damage to the steel surface, influences the smoothness and the thickness on tubular product pipe wall surface, leads to the cross sectional shape of tubular product when the atress that punches a hole, and tubular product is out of shape easily, influences the in-service use effect of tubular product, and adds man-hour to the steel pipe, and fixing fixture can't adjust the centre gripping location according to the size of steel pipe, has the problem that can't adjust the steel pipe of equidimension not.
Disclosure of Invention
The invention aims to provide a positioning clamp for steel processing, which solves the problem that steel pipes with different sizes cannot be adjusted in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a positioning fixture for steel processing, includes the base, base up end one side sliding connection has two at least consoles, two the console up end all is provided with the backup pad, the backup pad upper end is provided with the steel pipe, the console up end is located the backup pad both sides all are equipped with the spout, the spout interpolation is equipped with the slider, the slider upper end is provided with the silk braid, console up end one side is provided with asynchronous machine, asynchronous machine rotates the axle head and is provided with two-way lead screw, two-way lead screw both ends all alternate two in the silk braid, the silk braid upper end is provided with electric telescopic handle, electric telescopic handle flexible end one side is provided with splint, two splint all are located steel pipe upper end both sides.
Preferably, a limiting rod is arranged on one side of the upper end face of the control console, a limiting groove is formed in one side of the upper end of the limiting rod, one end of a bidirectional screw rod is inserted into the limiting groove, a through hole is formed in one side of the lower end of the supporting plate, the bidirectional screw rod is inserted into the through hole, an arc-shaped groove is formed in the upper end face of the supporting plate, an anti-slip mat is arranged on the upper end face of the arc-shaped groove, the lower end of the steel pipe is located on the upper end face of the anti-slip mat, protective mats are arranged on the inner wall faces of the two clamping plates, and two sides of the upper end of the steel pipe are in contact connection with the two protective mats.
Preferably, one side of the upper end surface of the base is provided with at least two conical sliding grooves, conical sliding blocks are inserted into the two conical sliding grooves, rolling grooves are formed in the lower end surfaces of the conical sliding blocks, idler wheels are arranged between two sides of the inner walls of the rolling grooves, and the idler wheels are located on the bottom end surfaces of the conical sliding grooves.
Preferably, base up end one side is provided with vice asynchronous machine, vice asynchronous machine rotates the axle head and is provided with vice two-way lead screw, two control cabinet one side is equipped with the mounting hole relatively, it has the thread bush to alternate in the mounting hole, vice two-way lead screw both ends all alternate in both sides in the thread bush, base up end one end is provided with the dead lever, the dead lever upper end one side is equipped with the fixed slot, vice two-way lead screw one end is inserted and is established in the fixed slot, base up end opposite side is provided with the machine tool body, base one side is provided with first positive and negative switch, base one side is located first positive and negative switch one end is provided with the positive and negative switch of second, base one side is located first positive and negative switch other end is provided with the positive and negative switch of third.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention firstly controls an electric telescopic rod to drive a clamping plate to move upwards by shifting leftwards through a handle of a first positive and negative switch according to the sizes of different diameters of steel pipes, the steel pipes are placed at the upper ends of supporting plates, two sides of the lower ends of the steel pipes are supported through two anti-slip pads, the electric telescopic rod is controlled to drive the clamping plate to move downwards by shifting rightwards through the handle of the first positive and negative switch, the steel pipes are simultaneously extruded upwards and downwards through the clamping plate and the supporting plates, meanwhile, the motor can be reversed by shifting rightwards through a handle of a second positive and negative switch, therefore, the three-phase reverse switch achieves phase sequence conversion by changing the positions of two phase lines of an output end, thereby controlling the motor to rotate forwards and backwards, controlling an asynchronous motor to operate, driving a bidirectional screw rod to rotate forwards, and controlling wire sleeves at two sides to mutually extrude the two sides of the steel pipes through the electric telescopic rod driving the clamping plate, reach and fix a position the steel pipe, extrude the steel pipe through protection pad and slipmat, prevent the impaired fish tail of steel pipe outer wall, and avoid the steel pipe to take place deformation through extruding, lead to the unable normal use of steel pipe.
2. When the steel pipe is positioned and clamped, the auxiliary asynchronous motor is controlled to operate by shifting the handle rightwards through the third forward-reverse switch according to the length of the steel pipe, the auxiliary asynchronous motor drives the auxiliary bidirectional screw rod to rotate forwards, the threaded sleeves on the two sides are controlled to move inwards, the clamping equipment is driven to move simultaneously by controlling the base, the auxiliary asynchronous motor is controlled to operate by shifting the handle leftwards through the third forward-reverse switch, the auxiliary asynchronous motor drives the auxiliary bidirectional screw rod to rotate reversely, the threaded sleeves on the two sides are controlled to move outwards, the clamping equipment is driven to move simultaneously by controlling the base, the distance between the two bases is adjusted, and the bases roll in the conical sliding groove through the rollers at the bottom end in the moving process, so that the distance between the two bases can be adjusted more quickly, and the steel pipes with different lengths can be conveniently and fixedly positioned and clamped.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cutaway schematic view of FIG. 1;
FIG. 3 is a schematic sectional view taken from the right side of A-A of FIG. 1;
FIG. 4 is a schematic right-side view of FIG. 1;
fig. 5 is a sectional view of fig. 4.
In the figure: 1. a base; 2. a console; 3. a support plate; 4. a steel pipe; 5. a chute; 6. a slider; 7. sleeving the silk; 8. a bidirectional lead screw; 9. a splint; 10. a limiting rod; 11. a limiting groove; 12. perforating; 13. an arc-shaped slot; 14. a non-slip mat; 15. a tapered chute; 16. a tapered slider; 17. a rolling groove; 18. a roller; 19. a secondary asynchronous motor; 20. an auxiliary bidirectional screw; 21. mounting holes; 22. a threaded sleeve; 23. fixing the rod; 24. fixing grooves; 25. a machine tool body; 26. a first positive and negative switch; 27. a second positive and negative switch; 28. a third positive-negative switch; 101. a protective pad; 102. an asynchronous motor; 103. an electric telescopic rod.
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.
As shown in fig. 1, 2, 3, 4 and 5, a positioning fixture for steel processing comprises a base 1, two control consoles 2 are slidably connected to the right side of the upper end face of the base 1, support plates 3 are welded to the upper end faces of the two control consoles 2, steel pipes 4 are welded to the upper ends of the support plates 3, sliding grooves 5 are respectively machined in the two sides of the support plates 3 on the upper end faces of the control consoles 2, sliding blocks 6 are inserted into the sliding grooves 5, thread sleeves 7 are welded to the upper ends of the sliding blocks 6, asynchronous motors 102 are welded to the right side of the upper end face of the control consoles 2, the models of the asynchronous motors 102 are YX3-100L1-4, the control ends of the asynchronous motors 102 are connected to the output ends of a second positive and negative switch 27 through electric wires, bidirectional screw rods 8 are welded to the rotating shaft ends of the asynchronous motors 102, the two ends of the bidirectional screw rods 8 are inserted into the two thread sleeves 7, the two sides of the bidirectional screw rods 8 are connected with the two thread sleeves 7 through threads, electric telescopic rods 103 are welded to the upper ends of the thread sleeves 7, the model of the electric telescopic rods 103 is DDG10-R-33KN, the control ends of the two electric telescopic rods 103 are connected with the output end of the first positive and negative switch 26 through electric wires, the telescopic ends of the two electric telescopic rods 103 are welded with clamping plates 9 on the inner sides, the opposite inner sides of the two clamping plates 9 are positioned on the two sides of the upper end of the steel pipe 4, the upper end seat side of the console 2 is welded with a limiting rod 10, the right side of the upper end of the limiting rod 10 is provided with a limiting groove 11, a bearing is inserted into the limiting groove 11, the left end of a bidirectional screw 8 is inserted into the inner ring of the bearing, the right side wall of the lower end of the support plate 3 is provided with a through hole 12, the bidirectional screw 8 is inserted into the through hole 12, the bidirectional screw 8 is rotatably connected with the through hole 12, the upper end face of the support plate 3 is provided with an arc-shaped groove 13, the upper end face of the arc-shaped groove 13 is fixedly provided with an anti-skid pad 14 through bolts, the anti-skid pad 14 is made of rubber, the lower end of the steel pipe 4 is positioned on the upper end face of the anti-skid pad 14, the inner wall surfaces of the two clamping plates 9 are fixedly provided with protective pads 101 through bolts, the protective pads 101 are made of rubber materials, two sides of the upper end of the steel pipe 4 are in contact connection with the two protective pads 101, the right side of the upper end surface of the base 1 is provided with two conical sliding chutes 15, conical sliding blocks 16 are inserted into the two conical sliding chutes 15, the lower end surface of each conical sliding block 16 is provided with a rolling chute 17, rolling wheels 18 are welded between two sides of the inner wall of the rolling chute 17, the rolling wheels 18 are positioned on the bottom end surface of the conical sliding chutes 15, the rear end of the upper end surface of the base 1 is welded with an auxiliary asynchronous motor 19, the model of the auxiliary asynchronous motor 19 is YX3-100L1-4, the control end of the auxiliary asynchronous motor 19 is connected with the output end of a third positive and negative switch 28 through wires, an auxiliary bidirectional screw rod 20 is welded at the rotating shaft end of the auxiliary asynchronous motor 19, mounting holes 21 are oppositely processed on the inner side surfaces of the two control consoles 2, threaded sleeves 22 are inserted in the mounting holes 21, two ends of the auxiliary bidirectional screw rod 20 are inserted in the threaded sleeves 22 on two sides, the auxiliary two-way screw 20 is connected with the screw sleeves 22 at two sides through threads, the front end of the upper end face of the base 1 is welded with a fixed rod 23, the rear wall of the upper end of the fixed rod 23 is provided with a fixed groove 24, the fixed groove 24 is used for pinching a pure income gull bearing, the front end of the auxiliary two-way screw 20 is inserted into the inner ring of the bearing, the left side of the upper end face of the base 1 is welded with a machine tool body 25, the right side of the base 1 is fixedly provided with a first positive and negative switch 26 through bolts, the model of the first positive and negative switch 26 is LW8D-10YH5, the input end of the first positive and negative switch 26 is connected with an external power supply through wires, the right side of the base 1 is positioned at the front end of the first positive and negative switch 26 and is fixedly provided with a second positive and negative switch 27 through bolts, the model of the second positive and negative switch 27 is LW8D-10YH5, the input end of the second positive and negative switch 27 agrees to the wires to be connected with the external power supply, the third positive and negative switch 28 is fixedly arranged at the right side of the base 1 is positioned at the rear end of the first positive and negative switch 26 through bolts, the model of the third positive and negative switch 28 is LW8D-10YH5, and the input terminal of the third positive and negative switch 28 is connected to an external power source through a wire.
The working principle of the embodiment is as follows: firstly, according to the different diameters of the steel pipes 4, the steel pipes 4 are placed at the upper ends of the supporting plates 3, the two sides of the lower end of the steel pipes 4 are supported by the two anti-skid pads 14 by shifting the handle of the first positive and negative switch 26 leftwards, the electric telescopic rod 103 is controlled to drive the clamping plates 9 to move upwards, the steel pipes 4 are simultaneously extruded up and down through the clamping plates 9 and the supporting plates 3, meanwhile, the two sides of the lower end of the steel pipes 4 are supported by the two anti-skid pads 14 by shifting the handle of the first positive and negative switch 26 rightwards, the motor reversal can be realized by adjusting the phase sequence of the three-phase alternating current input into the motor, therefore, the three-phase reversal switch achieves the phase sequence conversion by changing the positions of the two phase lines at the output end, thereby controlling the motor to reverse, controlling the asynchronous motor 102 to operate, driving the two-way screw rod 8 to rotate forwards, controlling the wire sleeves 7 at the two sides to drive the clamping plates 9 to extrude the two sides of the steel pipes 4 mutually through the electric telescopic rod 103, reach and fix a position steel pipe 4, extrude steel pipe 4 through protection pad 101 and slipmat 14, prevent the impaired fish tail of steel pipe 4 outer wall, and avoid steel pipe 4 to take place the deformation through extruding the impaired, lead to the unable normal use of steel pipe 4. When the steel pipe 4 is positioned and clamped, the auxiliary asynchronous motor 19 is controlled to operate by shifting the handle rightwards through the third positive and negative switch 28 according to the length of the steel pipe 4, the auxiliary asynchronous motor 19 drives the auxiliary bidirectional screw rod 20 to rotate forwards, the threaded sleeves 22 on two sides are controlled to move inwards, the control base 1 drives the clamp device to move simultaneously, the operation of the auxiliary asynchronous motor 19 is controlled through the leftward toggle handle of the third positive and negative switch 28, the auxiliary asynchronous motor 19 drives the auxiliary bidirectional screw rod 20 to rotate reversely, the threaded sleeves 22 on the two sides are controlled to move outwards, the base 1 is controlled to drive the clamp device to move simultaneously, the distance between the two bases 1 is adjusted, and the bases 1 roll in the tapered chutes 15 through the rollers 18 at the bottom ends in the moving process, the interval between two bases 1 of adjustment that can be faster can conveniently carry out effectual fixed position centre gripping to the steel pipe 4 of different length.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention.
Claims (4)
1. The utility model provides a positioning fixture is used in steel processing which characterized in that: comprises a base (1), one side of the upper end face of the base (1) is slidably connected with at least two control consoles (2), the upper end faces of the two control consoles (2) are respectively provided with a support plate (3), the upper end of the support plate (3) is provided with a steel pipe (4), the upper end face of the control console (2) is positioned on two sides of the support plate (3) and is respectively provided with a sliding chute (5), a sliding block (6) is inserted in the sliding chute (5), the upper end of the sliding block (6) is provided with a screw sleeve (7), one side of the upper end face of the control console (2) is provided with an asynchronous motor (102), the rotating shaft end of the asynchronous motor (102) is provided with a bidirectional screw rod (8), two ends of the bidirectional screw rod (8) are respectively inserted in the two screw sleeves (7), the upper end of the screw sleeve (7) is provided with an electric telescopic rod (103), one side of the telescopic end of the electric telescopic rod (103) is provided with a clamping plate (9), the two clamping plates (9) are positioned on two sides of the upper end of the steel pipe (4).
2. The positioning jig for steel processing according to claim 1, characterized in that: control cabinet (2) up end one side is provided with gag lever post (10), gag lever post (10) upper end one side is equipped with spacing groove (11), two-way lead screw (8) one end is inserted and is established in spacing groove (11), backup pad (3) lower extreme one side is equipped with perforation (12), two-way lead screw (8) alternate in perforation (12), backup pad (3) up end is equipped with arc wall (13), arc wall (13) up end is provided with slipmat (14), steel pipe (4) lower extreme is located slipmat (14) up end, two splint (9) internal face all is provided with protection pad (101), steel pipe (4) upper end both sides and two protection pad (101) contact connection.
3. The positioning jig for steel processing according to claim 1, characterized in that: base (1) up end one side is equipped with two at least toper spout (15), two toper spout (15) are all inserted toper slider (16), the terminal surface is equipped with rolling groove (17) under toper slider (16), be provided with gyro wheel (18) between rolling groove (17) inner wall both sides, gyro wheel (18) are located on the toper spout (15) bottom face.
4. The positioning jig for steel processing according to claim 1, characterized in that: an auxiliary asynchronous motor (19) is arranged on one side of the upper end face of a base (1), an auxiliary bidirectional screw rod (20) is arranged at the rotating shaft end of the auxiliary asynchronous motor (19), two opposite mounting holes (21) are formed in one side of a control console (2), threaded sleeves (22) are inserted in the mounting holes (21), two ends of the auxiliary bidirectional screw rod (20) are inserted in the threaded sleeves (22), a fixing rod (23) is arranged at one end of the upper end face of the base (1), a fixing groove (24) is formed in one side of the upper end of the fixing rod (23), one end of the auxiliary bidirectional screw rod (20) is inserted in the fixing groove (24), a machine tool body (25) is arranged on the other side of the upper end face of the base (1), a first positive and negative switch (26) is arranged on one side of the base (1), a second positive and negative switch (27) is arranged on one side of the first positive and negative switch (26), and a third positive and negative switch (28) is arranged at one side of the base (1) and is positioned at the other end of the first positive and negative switch (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111052918.7A CN113649463A (en) | 2021-09-06 | 2021-09-06 | Positioning fixture for steel processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111052918.7A CN113649463A (en) | 2021-09-06 | 2021-09-06 | Positioning fixture for steel processing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113649463A true CN113649463A (en) | 2021-11-16 |
Family
ID=78483021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111052918.7A Pending CN113649463A (en) | 2021-09-06 | 2021-09-06 | Positioning fixture for steel processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113649463A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769426A (en) * | 2022-04-08 | 2022-07-22 | 山东鲁南精工机械有限公司 | Punching device for two ends of multi-specification pipe |
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| CN211062523U (en) * | 2019-12-30 | 2020-07-21 | 江苏蒙腾电气有限公司 | Enameled wire processing location clamping device |
| CN211161575U (en) * | 2019-10-23 | 2020-08-04 | 天津孔方科技有限公司 | Frock clamp that metal stamping workpiece used |
| CN212635052U (en) * | 2020-06-05 | 2021-03-02 | 武汉有信机械设备有限公司 | Novel machining clamp with groove |
| CN212737121U (en) * | 2020-07-14 | 2021-03-19 | 山东省阳信鼎鑫电力电子器具有限公司 | Clamping device of ultrasonic welding machine |
| CN212857870U (en) * | 2020-08-20 | 2021-04-02 | 中垠建设集团有限公司 | Drilling device for pipe for construction site |
| CN214110609U (en) * | 2020-11-19 | 2021-09-03 | 安徽瑞远管道有限公司 | PE water supply pipe production is with positioner of adjustable pipe diameter |
-
2021
- 2021-09-06 CN CN202111052918.7A patent/CN113649463A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211161575U (en) * | 2019-10-23 | 2020-08-04 | 天津孔方科技有限公司 | Frock clamp that metal stamping workpiece used |
| CN211062523U (en) * | 2019-12-30 | 2020-07-21 | 江苏蒙腾电气有限公司 | Enameled wire processing location clamping device |
| CN212635052U (en) * | 2020-06-05 | 2021-03-02 | 武汉有信机械设备有限公司 | Novel machining clamp with groove |
| CN212737121U (en) * | 2020-07-14 | 2021-03-19 | 山东省阳信鼎鑫电力电子器具有限公司 | Clamping device of ultrasonic welding machine |
| CN212857870U (en) * | 2020-08-20 | 2021-04-02 | 中垠建设集团有限公司 | Drilling device for pipe for construction site |
| CN214110609U (en) * | 2020-11-19 | 2021-09-03 | 安徽瑞远管道有限公司 | PE water supply pipe production is with positioner of adjustable pipe diameter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114769426A (en) * | 2022-04-08 | 2022-07-22 | 山东鲁南精工机械有限公司 | Punching device for two ends of multi-specification pipe |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20211116 |