CN216242641U - Pipe jacking device for construction of hydraulic engineering pipe jacking method - Google Patents
Pipe jacking device for construction of hydraulic engineering pipe jacking method Download PDFInfo
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- CN216242641U CN216242641U CN202121712135.2U CN202121712135U CN216242641U CN 216242641 U CN216242641 U CN 216242641U CN 202121712135 U CN202121712135 U CN 202121712135U CN 216242641 U CN216242641 U CN 216242641U
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- fixedly connected
- pipe jacking
- threaded rod
- mobile station
- rack
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Abstract
The utility model relates to the technical field of hydraulic engineering, in particular to a pipe jacking device for hydraulic engineering pipe jacking construction, which comprises a mounting plate, wherein a mounting groove is formed in the mounting plate, an adjusting mechanism is arranged in the mounting groove, the adjusting mechanism comprises a driving motor, the output end of the driving motor is fixedly connected with a first threaded rod, one side of the first threaded rod is fixedly connected with a transmission gear, and the outer surface of the transmission gear is movably connected with a transmission belt. The utility model has the advantages that: through setting up adjustment mechanism, reached and to have been convenient for mobile station and mounting panel installation and separation, frictional force when simultaneously can reducing the mobile station removal again, and then reduce the energy loss for the job schedule through setting up location structure, has reached and to have pressed from both sides the purpose that tightly presss from both sides and loosen the pipeline fast, and then the staff of being convenient for changes the pipeline, increases the nature controlled of device, and the rubber block can increase the frictional force between splint and the pipeline simultaneously.
Description
Technical Field
The utility model relates to the technical field of hydraulic engineering, in particular to a pipe jacking device for hydraulic engineering pipe jacking construction.
Background
The pipe-jacking construction is a non-excavation construction method, and is a pipe burying construction technology without excavation or with few excavations, the pipe-jacking construction is that a jacking force generated by jacking equipment is used in a working pit to overcome the friction force between a pipe and surrounding soil, the pipe is jacked into the soil according to a designed gradient and the earthwork is transported away, after one pipe section is jacked into the soil layer, the second pipe section is jacked continuously, the principle is that a tool pipe or a heading machine is pushed into a receiving pit from the working pit through the soil layer and lifted by means of the thrusts of a main jacking oil cylinder, a pipe space, a relay space and the like, and the pipe is buried between the two pits after following the tool pipe or the heading machine.
The pipe jacking device for the hydraulic engineering, which is disclosed in the Chinese patent CN211925016U, is characterized in that the direction of a reinforced inserting plate at the bottom of a horizontal fixed block is perpendicular to the construction direction of a jacking pipe by arranging a fixed component, the device is prevented from sliding backwards, and the top of a pipe jacking body can be pressed by arranging the fixed component, so that the pipe jacking body is kept stable in the vertical direction, but the pipe jacking device for the hydraulic engineering has the following defects while solving the problems:
1. however, during construction on site, the construction site needs to be frequently transferred, and the pipe jacking fixing table of the device is inconvenient to be butted and disassembled with the slide rail, so that multi-point pipe jacking construction is inconvenient to complete, and the friction force of the pipe jacking fixing table is large when the pipe jacking fixing table moves, so that more energy loss is caused;
2. although the device can fix the pipeline, the hydraulic telescopic rod is required to be arranged to keep the pipeline to move linearly during pipe jacking, so that the pipe releasing process is inconvenient, and the control is inconvenient.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art and provides a pipe jacking device for hydraulic engineering pipe jacking construction.
The purpose of the utility model is realized by the following technical scheme: a pipe jacking device for hydraulic engineering pipe jacking construction comprises a mounting plate, wherein a mounting groove is formed in the mounting plate, and an adjusting mechanism is arranged in the mounting groove;
the adjusting mechanism comprises a driving motor, a first threaded rod of an output end of the driving motor is fixedly connected with, a transmission gear is fixedly connected with one side of the first threaded rod, a transmission belt is movably connected with the outer surface of the transmission gear, a driven gear is movably connected with one side of the transmission belt, a second threaded rod is fixedly connected with one side of the driven gear, two movable sleeves are movably connected with the outer surfaces of the first threaded rod and the second threaded rod, ejector rods are fixedly connected with the tops of the movable sleeves, and rotating wheels are arranged at the tops of the ejector rods.
Preferably, the top fixedly connected with slide of mounting panel, one side swing joint of slide has the mobile station, the top of mobile station is provided with the activity groove, the inside in activity groove is provided with location structure, the top of mobile station is provided with the pipe holder, one side swing joint of pipe holder has the pipeline.
By adopting the technical scheme, the pipe clamp can be convenient for fixing the pipeline.
Preferably, location structure includes loose gear, first rack, second rack, reset spring, connecting block, splint, rubber block and draws the piece, loose gear's surface swing joint has first rack and second rack, the equal fixedly connected with reset spring in one side of first rack and second rack, the equal fixedly connected with connecting block in one side at first rack and second rack top, one side fixedly connected with splint of connecting block, one side of splint is provided with the rubber block, one side fixedly connected with of first rack draws the piece.
Through adopting above-mentioned technical scheme, can be convenient for press from both sides the purpose tight and loosen the pipeline fast, and then the staff of being convenient for changes the pipeline.
Preferably, the equal swing joint in four corners department of mounting panel has the installation nail, one side fixedly connected with output motor at mounting panel top, output motor's output fixedly connected with removes the screw rod, one side swing joint who removes the screw rod surface has the synchronizing block, the synchronizing block passes through bolt swing joint with the mobile station.
By adopting the technical scheme, the installation of the mobile station can be facilitated, and the movement of the mobile station can be controlled.
Preferably, the quantity of second threaded rod is six, six the second threaded rod all with drive belt swing joint, spiral threaded rod about first threaded rod and second threaded rod are, remove cover and first threaded rod and second threaded rod threaded connection, the both ends that the mounting panel is located the second threaded rod all are provided with the bearing.
Through adopting above-mentioned technical scheme, the first threaded rod of motor control and second threaded rod of can being convenient for rotate simultaneously.
Preferably, the quantity of slide is two, the shape of slide is L shape, the runner is located the inside of slide one side, the mounting panel is located the position of ejector pin and has all seted up the activity hole, the mobile station is located one side of slide and has seted up the butt joint groove, the mobile station is located one side of runner and has seted up the spout.
By adopting the technical scheme, the mobile station can be conveniently butted with the slide way, and meanwhile, the limit can be carried out.
Preferably, one side that the mobile station is located first rack all is provided with limit structure, limit structure includes installation shell, pressure spring, fixture block, spliced pole and synchronizing rod, the inside fixedly connected with pressure spring of installation shell, one side fixedly connected with fixture block of pressure spring, the bottom fixedly connected with spliced pole of fixture block, one side fixedly connected with synchronizing rod of spliced pole.
Through adopting above-mentioned technical scheme, can be convenient for control the unidirectional movement of first rack, and then carry on spacingly.
Preferably, the movable gear is rotatably connected with the mobile station, the number of the movable gears is two, the number of the first racks is two, and the first racks are fixedly connected with the pull block.
Through adopting above-mentioned technical scheme, can drive second rack synchronous motion when making first rack remove.
Preferably, the movable holes are formed in one side, located at the connecting block, of the mobile station, and the movable holes are formed in one side, located at the first rack, of the mobile station.
Through adopting above-mentioned technical scheme, can be convenient for control the removal orbit of connecting block and first rack, avoid it to produce and break away from.
Preferably, the clamping grooves are formed in one side, located at the clamping block, of the first rack, the clamping grooves are multiple in number, the inclined plane is formed in one side of the clamping block, and the movable holes are formed in one side, located at the connecting column, of the mounting shell.
Through adopting above-mentioned technical scheme, the fixture block of being convenient for is spacing to the draw-in groove, and then increases location structure's stability.
The utility model has the following advantages:
1. the pipe jacking device for the pipe jacking method construction of the hydraulic engineering is characterized in that the pipe jacking device is provided with the adjusting mechanism, the mounting plate is internally provided with the mounting groove, the adjusting mechanism is arranged in the mounting groove, when the mobile station is mounted, the butt joint groove at the bottom of the mobile station is firstly butted with the slide way, after the butt joint is finished, the driving motor is started, the first threaded rod and the second threaded rod drive the moving sleeve to move, the rotating wheel enters the slide way, so that the limiting effect is achieved, meanwhile, the friction force generated when the mobile station moves can be reduced, when the mobile station is dismounted, the rotating wheel is separated from the slide way by controlling the rotation of the motor, then, the synchronous block is separated from the mobile station, the mobile station can be separated from the mounting plate at the moment, the structure is simple, the aim of facilitating the mounting and separating of the mobile station and the mounting plate is achieved, meanwhile, the friction force generated when the mobile station moves can be reduced, so that the energy loss is reduced, the work progress is accelerated;
2. this pipe jacking device is used in hydraulic engineering push pipe method construction, through setting up location structure, the top of mobile station is provided with the movable groove, the inside in movable groove is provided with location structure, during the installation pipeline, draw the piece through promoting, and then increase the interval of top splint through the removal of two racks, under the effect of fixture block and draw-in groove, can carry out automatic spacing, dock pipeline and pipe clamp this moment, after the butt joint finishes, through pulling the synchronizing bar, make the fixture block break away from the draw-in groove, under reset spring's effect, splint can press from both sides the pipeline automatically, it makes splint keep the clamping state to loosen the synchronizing bar this moment, set up the rubber block, can increase the frictional force between splint and the pipeline, moreover, the steam generator is simple to operate, reached and to have pressed from both sides the purpose of pressing from both sides tightly and loosening the pipeline fast, and then the staff of being convenient for changes the pipeline, increase the controllability of device.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the internal structure of the mounting plate of the present invention;
FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention;
FIG. 4 is a schematic structural diagram of a positioning structure according to the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 4 according to the present invention;
FIG. 6 is a schematic cross-sectional view of another aspect of the present invention.
In the figure: 1-mounting plate, 2-adjusting mechanism, 201-driving motor, 202-first threaded rod, 203-transmission gear, 204-transmission belt, 205-driven gear, 206-second threaded rod, 207-moving sleeve, 208-ejector rod, 209-rotating wheel, 3-slideway, 4-moving table, 5-positioning structure, 501-moving gear, 502-first rack, 503-second rack, 504-reset spring, 505-connecting block, 506-clamping plate, 507-rubber block, 508-pulling block, 6-pipe gripper, 7-pipeline, 8-mounting nail, 9-output motor, 10-moving screw, 11-synchronous block, 12-butt-joint groove, 13-sliding groove and 14-limiting structure, 1401-mounting shell, 1402-pressure spring, 1403-clamping block, 1404-connecting column, 1405-synchronous rod and 15-clamping groove.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, but the scope of the utility model is not limited to the following.
As shown in fig. 2, the pipe jacking device for the pipe jacking method construction of the hydraulic engineering comprises a mounting plate 1, wherein a mounting groove is formed in the mounting plate 1, and an adjusting mechanism 2 is arranged in the mounting groove;
as shown in fig. 2 and 3, the adjusting mechanism 2 includes a driving motor 201, a first threaded rod 202 is fixedly connected to an output end of the driving motor 201, a transmission gear 203 is fixedly connected to one side of the first threaded rod 202, a transmission belt 204 is movably connected to an outer surface of the transmission gear 203, a driven gear 205 is movably connected to one side of the transmission belt 204, a second threaded rod 206 is fixedly connected to one side of the driven gear 205, two movable sleeves 207 are movably connected to outer surfaces of the first threaded rod 202 and the second threaded rod 206, a push rod 208 is fixedly connected to a top of each movable sleeve 207, and a rotating wheel 209 is arranged at a top of the push rod 208.
As a preferred technical solution of the present invention, as shown in fig. 1 and 6, a slide 3 is fixedly connected to the top of a mounting plate 1, a mobile station 4 is movably connected to one side of the slide 3, a movable slot is formed in the top of the mobile station 4, a positioning structure 5 is arranged inside the movable slot, a tube holder 6 is arranged on the top of the mobile station 4, a pipeline 7 is movably connected to one side of the tube holder 6, and a rounded corner is formed on the top of the slide 3, so that the slide 3 can conveniently enter a butt-joint slot 12 in the bottom of the mobile station 4.
As a preferred technical solution of the present invention, as shown in fig. 4, the positioning structure 5 includes a movable gear 501, a first rack 502, a second rack 503, a return spring 504, a connecting block 505, a clamping plate 506, a rubber block 507 and a pulling block 508, the outer surface of the movable gear 501 is movably connected with the first rack 502 and the second rack 503, one side of the first rack 502 and one side of the second rack 503 are both fixedly connected with the return spring 504, one side of the top of the first rack 502 and one side of the top of the second rack 503 are both fixedly connected with the connecting block 505, one side of the connecting block 505 is fixedly connected with the clamping plate 506, one side of the clamping plate 506 is provided with the rubber block 507, and one side of the first rack 502 is fixedly connected with the pulling block 508.
As a preferred technical solution of the present invention, as shown in fig. 1 and 2, four corners of the mounting plate 1 are movably connected with mounting nails 8, one side of the top of the mounting plate 1 is fixedly connected with an output motor 9, an output end of the output motor 9 is fixedly connected with a movable screw 10, one side of the outer surface of the movable screw 10 is movably connected with a synchronizing block 11, and the synchronizing block 11 is movably connected with the mobile station 4 through a bolt, which can facilitate the mounting and dismounting of the synchronizing block 11 and the mobile station 4.
As a preferred technical solution of the present invention, as shown in fig. 2, the number of the second threaded rods 206 is six, six second threaded rods 206 are movably connected to the transmission belt 204, the first threaded rod 202 and the second threaded rod 206 are both left and right screw threaded rods, the moving sleeve 207 is in threaded connection with the first threaded rod 202 and the second threaded rod 206, and the two ends of the mounting plate 1 located on the second threaded rod 206 are both provided with bearings.
As a preferred technical solution of the present invention, as shown in fig. 1, 2 and 6, the number of the slide ways 3 is two, the slide ways 3 are L-shaped, the rotating wheel 209 is located inside one side of the slide way 3, the mounting plate 1 is provided with movable holes at positions of the ejector rods 208, one side of the mobile station 4 located on the slide way 3 is provided with a butt-joint groove 12, one side of the mobile station 4 located on the rotating wheel 209 is provided with a sliding groove 13, the rotating wheel 209 enters the sliding groove 13, so as to play a role of limiting, and at the same time, reduce friction force when the mobile station 4 moves.
As a preferred technical solution of the present invention, as shown in fig. 5, the mobile station 4 is provided with a limiting structure 14 on one side of the first rack 502, the limiting structure 14 includes a mounting shell 1401, a pressure spring 1402, a fixture block 1403, a connecting column 1404 and a synchronization rod 1405, the pressure spring 1402 is fixedly connected inside the mounting shell 1401, the fixture block 1403 is fixedly connected on one side of the pressure spring 1402, the connecting column 1404 is fixedly connected at the bottom of the fixture block 1403, and the synchronization rod 1405 is fixedly connected on one side of the connecting column 1404.
As a preferred embodiment of the present invention, as shown in fig. 4, the movable gear 501 is rotatably connected to the mobile station 4, the number of the movable gears 501 is two, the number of the first racks 502 is two, and both the two first racks 502 are fixedly connected to the pull block 508.
As a preferred technical solution of the present invention, as shown in fig. 1 and 4, the movable holes are formed on both sides of the mobile station 4 located on the connection block 505, and the movable holes are formed on one side of the mobile station 4 located on the first rack 502.
As a preferred technical solution of the present invention, as shown in fig. 4 and 5, the first rack 502 has a plurality of slots 15 on one side of the fixture block 1403, the fixture block 1403 has an inclined surface on one side, and the mounting shell 1401 has a movable hole on one side of the connecting column 1404.
The working principle of the utility model is as follows:
s1, when the mobile station 4 is installed, the butt joint groove 12 at the bottom of the mobile station 4 is butt jointed with the slide way 3, after the butt joint is finished, the driving motor 201 is started, the first threaded rod 202 and the second threaded rod 206 drive the moving sleeve 207 to move, and the rotating wheel 209 enters the slide groove 13, so that the limiting effect is achieved;
s2, when the mobile station 4 is dismounted, the rotating wheel 209 is separated from the chute 13 by controlling the rotation of the driving motor 201, and then the synchronous block 11 is separated from the mobile station 4, at this time, the mobile station 4 can be separated from the mounting plate 1;
s3, when the pipe 7 is installed, the distance between the top clamping plates 506 is increased by pushing the pull block 508 and further by the movement of the two racks;
s4, after the installation is finished, the synchronizing rod 1405 is pulled to enable the clamping block 1403 to be separated from the clamping groove 15, the clamping plate 506 can automatically clamp the pipeline 7 under the action of the return spring, and the synchronizing rod 1405 is loosened to enable the clamping plate 506 to keep a clamping state.
To sum up, when the mobile station 4 is installed, the butt-joint groove 12 at the bottom of the mobile station 4 is butt-jointed with the slide way 3, after the butt-joint is completed, the driving motor 201 is started, the first threaded rod 202 and the second threaded rod 206 drive the moving sleeve 207 to move, the rotating wheel 209 enters the sliding groove 13, so that the limiting effect is achieved, meanwhile, the friction force when the mobile station 4 moves can be reduced, when the mobile station 4 is disassembled, the driving motor 201 is controlled to rotate, the rotating wheel 209 is separated from the sliding groove 13, then the synchronous block 11 is separated from the mobile station 4, at the moment, the mobile station 4 can be separated from the mounting plate 1, the structure is simple, the purpose of facilitating the installation and separation of the mobile station 4 and the mounting plate 1 is achieved, meanwhile, the friction force when the mobile station 4 moves can be reduced, the energy loss is reduced, the working progress is accelerated, when the pipeline 7 is installed, the pull block 508 is pushed, and then increase the interval of top splint 506 through the removal of two racks, under the effect of fixture block 1403 and draw-in groove 15, can carry out automatic spacing, dock pipeline 7 and pipe clamp 6 this moment, the back is finished in the installation, through pulling synchronizing bar 1405, make fixture block 1403 break away from draw-in groove 15, under reset spring's effect, splint 506 can press from both sides pipeline 7 automatically, loosen synchronizing bar 1405 this moment and make splint 506 keep the clamping state, and then reached and clamped and unclamped the purpose to pipeline 7 fast, and then be convenient for the staff and change pipeline 7, the controllability of increase device.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a hydraulic engineering push pipe method is push pipe device for construction which characterized in that: the device comprises a mounting plate (1), wherein a mounting groove is formed in the mounting plate (1), and an adjusting mechanism (2) is arranged in the mounting groove;
adjustment mechanism (2) include driving motor (201), the first threaded rod of output fixedly connected with (202) of driving motor (201), one side fixedly connected with drive gear (203) of first threaded rod (202), the surface swing joint of drive gear (203) has drive belt (204), one side swing joint of drive belt (204) has driven gear (205), one side fixedly connected with second threaded rod (206) of driven gear (205), the equal swing joint in surface of first threaded rod (202) and second threaded rod (206) has two and removes cover (207), the equal fixedly connected with ejector pin (208) in top that removes cover (207), the top of ejector pin (208) is provided with runner (209).
2. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 1, characterized in that: the top fixedly connected with slide (3) of mounting panel (1), one side swing joint of slide (3) has mobile station (4), the top of mobile station (4) is provided with movable groove, the inside in movable groove is provided with location structure (5), the top of mobile station (4) is provided with pipe holder (6), one side swing joint of pipe holder (6) has pipeline (7).
3. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 2, characterized in that: location structure (5) include loose gear (501), first rack (502), second rack (503), reset spring (504), connecting block (505), splint (506), rubber block (507) and draw piece (508), the surface swing joint of loose gear (501) has first rack (502) and second rack (503), the equal fixedly connected with reset spring (504) of one side of first rack (502) and second rack (503), the equal fixedly connected with connecting block (505) of one side at first rack (502) and second rack (503) top, one side fixedly connected with splint (506) of connecting block (505), one side of splint (506) is provided with rubber block (507), one side fixedly connected with of first rack (502) draws piece (508).
4. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 1, characterized in that: the equal swing joint in four corners department of mounting panel (1) has installation nail (8), one side fixedly connected with output motor (9) at mounting panel (1) top, output fixedly connected with of output motor (9) removes screw rod (10), one side swing joint who removes screw rod (10) surface has synchronizing block (11), synchronizing block (11) pass through bolt swing joint with mobile station (4).
5. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 1, characterized in that: the quantity of second threaded rod (206) is six, six second threaded rod (206) all with drive belt (204) swing joint, spiral threaded rod about first threaded rod (202) and second threaded rod (206) are, remove cover (207) and first threaded rod (202) and second threaded rod (206) threaded connection, the both ends that mounting panel (1) is located second threaded rod (206) all are provided with the bearing.
6. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 2, characterized in that: the quantity of slide (3) is two, the shape of slide (3) is L shape, runner (209) are located the inside of slide (3) one side, the activity hole has all been seted up to the position that mounting panel (1) is located ejector pin (208), docking slot (12) have been seted up to one side that mobile station (4) are located slide (3), spout (13) have been seted up to one side that mobile station (4) are located runner (209).
7. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 3, characterized in that: the mobile station (4) is located one side of first rack (502) and all is provided with limit structure (14), limit structure (14) are including installation shell (1401), pressure spring (1402), fixture block (1403), spliced pole (1404) and synchronizing bar (1405), the inside fixedly connected with pressure spring (1402) of installation shell (1401), one side fixedly connected with fixture block (1403) of pressure spring (1402), bottom fixedly connected with spliced pole (1404) of fixture block (1403), one side fixedly connected with synchronizing bar (1405) of spliced pole (1404).
8. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 3, characterized in that: the movable gear (501) is rotatably connected with the mobile station (4), the number of the movable gears (501) is two, the number of the first racks (502) is two, and the first racks (502) are fixedly connected with the pull block (508).
9. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 3, characterized in that: the movable holes are formed in one side, located on the connecting block (505), of the mobile station (4), and the movable holes are formed in one side, located on the first rack (502), of the mobile station (4).
10. The pipe jacking device for the pipe jacking method construction of the water conservancy project according to claim 7, characterized in that: draw-in grooves (15) have all been seted up to one side that first rack (502) are located fixture block (1403), the quantity of draw-in groove (15) is a plurality ofly, one side of fixture block (1403) is the inclined plane, activity hole has all been seted up to one side that installation shell (1401) are located spliced pole (1404).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712135.2U CN216242641U (en) | 2021-07-27 | 2021-07-27 | Pipe jacking device for construction of hydraulic engineering pipe jacking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121712135.2U CN216242641U (en) | 2021-07-27 | 2021-07-27 | Pipe jacking device for construction of hydraulic engineering pipe jacking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216242641U true CN216242641U (en) | 2022-04-08 |
Family
ID=80981455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121712135.2U Expired - Fee Related CN216242641U (en) | 2021-07-27 | 2021-07-27 | Pipe jacking device for construction of hydraulic engineering pipe jacking method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216242641U (en) |
-
2021
- 2021-07-27 CN CN202121712135.2U patent/CN216242641U/en not_active Expired - Fee Related
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Granted publication date: 20220408 |