CN114394378B - H frame of fully-mechanized belt conveyor - Google Patents
H frame of fully-mechanized belt conveyor Download PDFInfo
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- CN114394378B CN114394378B CN202111667285.0A CN202111667285A CN114394378B CN 114394378 B CN114394378 B CN 114394378B CN 202111667285 A CN202111667285 A CN 202111667285A CN 114394378 B CN114394378 B CN 114394378B
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- 238000009434 installation Methods 0.000 claims abstract description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 230000001788 irregular Effects 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G21/00—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors
- B65G21/02—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements
- B65G21/06—Supporting or protective framework or housings for endless load-carriers or traction elements of belt or chain conveyors consisting essentially of struts, ties, or like structural elements constructed to facilitate rapid assembly or dismantling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G41/00—Supporting frames or bases for conveyors as a whole, e.g. transportable conveyor frames
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Abstract
The application provides a fully-mechanized belt conveyor H frame, which comprises two support columns, wherein two clamping mechanisms are arranged on the support columns, each clamping mechanism comprises a first clamping frame which is connected with the support column in a clamping way, a connecting column is fixedly arranged on one side of each first clamping frame, a second clamping frame is installed on the outer side of each first clamping frame in a clamping way, two limiting plates are movably arranged on the inner side of each second clamping frame, and a first spring is fixedly connected between the two limiting plates; a cross beam is arranged between the two support columns. The H frame after innovation can be quickly disassembled into the cross beam and the support columns at the two ends, and the recovered H frame is disassembled and opened on a belt for transportation during stoping, so that the labor intensity of workers is greatly reduced, the safety risk in the middle of transportation is reduced, the utilization rate of working hours is improved, immeasurable safety benefit is created, and the design of the clamping mechanism can facilitate the realization of quick disassembly and installation of equipment.
Description
Technical Field
The application relates to the technical field of belt conveyor H frames, in particular to a fully-mechanized belt conveyor H frame with innovative superior design.
Background
In recent years, with the updating of mine fully-mechanized mining machinery, mechanical parts such as a gear box, a motor, a switch and the like are relatively advanced, but the belt conveyor H frame is still prolonged and unchanged until now, and obviously, the belt conveyor H frame cannot adapt to the requirements of modern safe and efficient mines. The method mainly comprises the steps that a middle cross beam and standing columns at two ends of an existing belt H frame are assembled by welding and cannot be disassembled, and because the size (width multiplied by height=1600 multiplied by 930 mm) of the belt H frame is ultra-wide, transportation by using a transportation crossheading belt cannot be carried out in the stoping process, the recovered H frame needs to be manually carried to a loading place, and then the concentrated loading is carried out by using an endless rope. And because of the irregular shape, the loading occupies a relatively large space, and heavy work is brought to the transportation.
Disclosure of Invention
In order to make up the defects, the application provides a fully-mechanized belt conveyor H frame, aims to improve the situation that a middle cross beam and standing columns at two ends of the existing belt conveyor H frame are assembled by welding and cannot be disassembled, and because the dimension (width multiplied by height=1600 multiplied by 930 mm) is ultra-wide, a transportation crossheading belt cannot be used for transporting in the stoping process, the recovered H frame needs to be manually transported to a loading place, and then endless ropes are used for transporting in a centralized loading mode. And because of the irregular shape, the loading occupies a relatively large space, and heavy work is brought to the transportation.
The embodiment of the application provides a fully-mechanized belt conveyor H frame, which comprises
The two sides of the two support columns are provided with sliding grooves;
the two support columns are provided with clamping mechanisms, each clamping mechanism comprises a first clamping frame which is connected to the support column in a clamping manner, a connecting column is fixedly arranged on one side of each first clamping frame, a second clamping frame is arranged on the outer side of each first clamping frame in a clamping manner, two limiting plates are movably arranged on the inner side of each second clamping frame, and a first spring is fixedly connected between each two limiting plates;
a cross beam is arranged between the two support columns, mounting plates are welded at two ends of the cross beam, clamping cavities are formed in two ends of the cross beam, a second spring is fixedly arranged in each clamping cavity, a support plate is fixedly arranged at the end part of each second spring, two connecting columns are respectively connected in the clamping cavities at two ends of the cross beam in a clamping mode, and the end parts of the connecting columns are connected with the support plates in a fitting mode;
the first clamping frame, the second clamping frame, the limiting plate and the supporting columns are fixedly connected through two groups of first fixing bolts, the two groups of first fixing bolts are located in the sliding grooves, the first fixing bolts can be set to enable the first clamping frame, the second clamping frame, the limiting plate and the supporting columns to be tightly and fixedly connected, the clamping mechanism is kept to be stably connected to the supporting columns to prevent sliding, the first clamping frame, the supporting columns and the mounting plates are fixedly connected through two groups of extension bolts, the two groups of extension bolts are sleeved with the third springs, the cross beam can be stably and fixedly connected through the mounting plates, the first clamping frame and the supporting columns are kept stable, and the elastic support can be realized through the setting of the third springs.
In the implementation process, the H frame after innovation can be quickly disassembled into a cross beam and two end support columns, and the recovered H frame is disassembled and opened on a belt for transportation during stoping, so that the labor intensity of workers is greatly reduced, the potential safety hazard of the workers in carrying is avoided, and the transportation workload is reduced. And the loading is easy, the space is not occupied, the workload is greatly reduced for installation and transportation, the safety risk in the process of transportation is also reduced, the man-hour utilization rate is improved, immeasurable safety benefit is created, and the design of the clamping mechanism can be convenient for realizing rapid disassembly and installation of equipment.
In a specific embodiment, the second clamping frame is internally provided with a movable groove, the bottom ends of the two limiting plates are fixedly provided with mounting seats, the inside of each mounting seat is movably connected with a roller through a pin shaft, and the rollers and the mounting seats are movably positioned in the movable groove.
In the implementation process, the movable groove is set to facilitate sliding connection of the roller, friction force of the limiting plate is reduced when the limiting plate moves, and movement adjustment is facilitated.
In a specific embodiment, the end of the movable groove is provided with a clamping edge, the side edge of the mounting seat is provided with a clamping strip, and the clamping strip is in fit connection with the inner side of the clamping edge.
In the implementation process, the setting of the clamping edges and the clamping strips can keep the installation seat and the idler wheels to be stably connected inside the movable groove, so that falling is prevented.
In a specific embodiment, the two limiting plates are respectively attached to the inner sides of the support columns under the supporting force of the first springs.
In the above-mentioned realization process, the effect of first spring can make the limiting plate can effectual laminating in the inboard of support column, keeps can inseparable laminating in the installation.
In a specific embodiment, one end of the third spring is fixedly installed on one side of the first clamping frame, and the other end of the third spring is in fit connection with one side of the mounting plate.
In the implementation process, the third spring is fixedly arranged on the first clamping frame, so that the third spring can be kept fixed, and the third spring is prevented from being lost.
In a specific embodiment, the bottom end of the support column is welded with a connecting plate, the connecting plate is fixedly connected with a support bottom plate through a second fixing bolt, and a plurality of inserting nails are fixedly arranged at the bottom end of the support bottom plate.
In the above-mentioned realization process, the settlement of connecting plate can carry out stable fixed connection with supporting baseplate, is convenient for make the support column carry out stable support fixedly, and inserts the setting of nail and can keep the stable fixed support of supporting baseplate.
In a specific embodiment, the supporting bottom plate is provided with a clamping installation groove, the connecting plate is clamped and installed in the clamping installation groove, the supporting bottom plate and the clamping installation groove are provided with corresponding bolt holes, and the bolt holes are in threaded connection with the second fixing bolts.
In the implementation process, the setting of the clamping installation groove can realize stable clamping installation of the connecting plate, movement and falling are prevented, and the setting of the bolt hole and the second fixing bolt can realize stable fixed connection.
In a specific embodiment, the ends of two of the support columns are each welded with a third frame.
In the implementation process, the setting of the third frame can realize the fixed installation of other devices.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present application and therefore should not be considered as limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a front view structure according to an embodiment of the present application;
fig. 2 is a schematic top view of an engagement mechanism according to an embodiment of the present disclosure;
FIG. 3 is a schematic cross-sectional view of portion A of FIG. 2 provided in an embodiment of the present application;
FIG. 4 is a schematic cross-sectional view of portion B of FIG. 2 provided in an embodiment of the present application;
fig. 5 is a schematic cross-sectional view of portion C in fig. 1 provided in an embodiment of the present application.
In the figure: 1. a support column; 2. a chute; 3. a clamping mechanism; 301. a first clamping frame; 302. a second clamping frame; 303. a limiting plate; 304. a first spring; 305. a connecting column; 306. lengthening the bolt; 307. a third spring; 4. a cross beam; 5. a movable groove; 6. a mounting base; 7. a pin shaft; 8. a roller; 9. a clamping cavity; 10. a second spring; 11. a support plate; 12. a mounting plate; 13. a third frame; 14. a support base plate; 15. the clamping installation groove; 16. a connecting plate; 17. bolt holes; 18. a second fixing bolt; 19. inserting a nail; 20. a first fixing bolt.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some of the embodiments of the present application, but not all of the embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.
Accordingly, the following detailed description of the embodiments of the present application, provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without undue burden are within the scope of the present application.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Referring to FIGS. 1-5, the present application provides a fully-mechanized belt conveyor H-frame comprising
Two support columns 1, wherein both sides of the two support columns 1 are provided with sliding grooves 2;
the two support columns 1 are provided with clamping mechanisms 3, the clamping mechanisms 3 comprise first clamping frames 301 which are clamped and connected to the support columns 1, one sides of the first clamping frames 301 are fixedly provided with connecting columns 305, the outer sides of the first clamping frames 301 are clamped and provided with second clamping frames 302, the inner sides of the second clamping frames 302 are movably provided with two limiting plates 303, and a first spring 304 is fixedly connected between the two limiting plates 303;
the two support columns 1 are provided with the cross beam 4 therebetween, the two ends of the cross beam 4 are welded with the mounting plates 12, the two ends of the cross beam 4 are internally provided with the clamping cavities 9, the second springs 10 are fixedly arranged in the clamping cavities 9, the end parts of the second springs 10 are fixedly provided with the support plates 11, the two connecting columns 305 are respectively connected with the inner parts of the clamping cavities 9 at the two ends of the cross beam 4 in a clamping manner, the end parts of the connecting columns 305 are connected with the support plates 11 in a fitting manner, the H frames after innovation can be quickly disassembled into the cross beam 4 and the three parts of the support columns 1 at the two ends, and the recovered H frames are disassembled and opened on a belt for transportation during stoping, so that the labor intensity of workers is greatly reduced, the potential safety hazards of the workers in transportation are avoided, and the transportation workload is reduced. And the loading is easy, the space is not occupied, the workload is greatly reduced for installation and transportation, the safety risk in the process of transportation is also reduced, the man-hour utilization rate is improved, immeasurable safety benefit is created, and the design of the clamping mechanism 3 can be convenient for realizing rapid disassembly and installation of equipment.
In this embodiment, the second clamping frame 302 is provided with a movable slot 5, the bottom ends of the two limiting plates 303 are fixedly provided with a mounting seat 6, the inside of the mounting seat 6 is movably connected with a roller 8 through a pin shaft 7, the roller 8 and the mounting seat 6 are movably positioned in the movable slot 5, the setting of the movable slot 5 is convenient for the roller 8 to be in sliding connection, friction force of the limiting plates 303 is reduced when the limiting plates 303 move, the limiting plates are convenient for moving and adjusting, the end part of the movable slot 5 is provided with a clamping edge, the side edge of the mounting seat 6 is provided with a clamping strip, the clamping strip is in fit connection with the inner side of the clamping edge, the setting of the clamping edge and the clamping strip can keep the mounting seat 6 and the roller 8 to be stably connected in the movable slot 5, the two limiting plates 303 are respectively in fit connection with the inner side of the supporting column 1 under the supporting force of the first spring 304, the first spring 304 has the function of enabling the limiting plate 303 to be effectively attached to the inner side of the supporting column 1 and to be tightly attached when being installed, the first clamping frame 301, the second clamping frame 302, the limiting plate 303 and the supporting column 1 are fixedly connected through two groups of first fixing bolts 20, the two groups of first fixing bolts 20 are positioned in the sliding groove 2, the first fixing bolts 20 can enable the first clamping frame 301, the second clamping frame 302, the limiting plate 303 and the supporting column 1 to be tightly and fixedly connected, the clamping mechanism 3 is kept to be stably connected to the supporting column 1 and prevented from sliding, the first clamping frame 301, the supporting column 1 and the mounting plate 12 are fixedly connected through two groups of lengthening bolts 306, the two sets of extension bolts 306 are sleeved with the third springs 307, the beam 4 can be stably and fixedly connected with the first clamping frame 301 and the support column 1 through the mounting plate 12 by the aid of the extension bolts 306, the beam is stable, elastic support can be achieved through setting of the third springs 307, one ends of the third springs 307 are fixedly mounted on one side of the first clamping frame 301, the other ends of the third springs 307 are connected to one side of the mounting plate 12 in a bonding mode, the third springs 307 are fixedly mounted on the first clamping frame 301, and then the beam can be fixedly maintained, and loss of the third springs 307 is prevented.
In this application, the bottom welding of support column 1 has connecting plate 16, connecting plate 16 passes through second fixing bolt 18 fixedly connected with supporting baseplate 14, the bottom mounting of supporting baseplate 14 is equipped with a plurality of insertion nails 19, and the setting of connecting plate 16 can carry out stable fixed connection with supporting baseplate 14, is convenient for make support column 1 carry out stable support fixedly, and the setting of insertion nail 19 can keep the stable fixed support of supporting baseplate 14, offered block mounting groove 15 on the supporting baseplate 14, connecting plate 16 block is installed the inside of block mounting groove 15, supporting baseplate 14 with corresponding bolt hole 17 has all been offered in the block mounting groove 15, bolt hole 17 threaded connection is in the second fixing bolt 18, the setting of block mounting groove 15 can realize carrying out stable block installation to connecting plate 16, prevents to take place to remove and drop, and the setting of bolt hole 17 and second fixing bolt 18 can realize stable fixed connection.
When the device is specifically arranged, the ends of the two support columns 1 are respectively welded with a third frame 13, and the third frames 13 can be set to realize the fixed installation of other devices.
Specifically, the working principle of the H frame of the fully-mechanized mining belt conveyor with the innovative and superior design is as follows: during the use, install two support columns 1 through the inside of the block mounting groove 15 of connecting plate 16 block at supporting baseplate 14, then carry out fixed connection through second fixing bolt 18, and the supporting baseplate 14 bottom is equipped with insertion nail 19, can keep support column 1 to carry out stable fixed mounting, then adjust the position of clamping mechanism 3, even make clamping mechanism 3 carry out sliding adjustment through first fixing bolt 20 and spout 2, then carry out the fixed mounting that the rethread first fixing bolt 20 realized carrying out stability to clamping mechanism 3, then install crossbeam 4, namely connect post 305 block in the block chamber 9 of crossbeam 4, then carry out stable connection through extension bolt 306 and third spring 307, make crossbeam 4 can be stable connect on clamping mechanism 3, then use, and be convenient for dismantle, convenient transportation.
The foregoing is merely exemplary embodiments of the present application and is not intended to limit the scope of the present application, and various modifications and variations may be suggested to one skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (8)
1. Fully-mechanized belt conveyor H frame is characterized by comprising
The two support columns (1), two sides of each support column (1) are provided with sliding grooves (2);
the two support columns (1) are provided with clamping mechanisms (3), each clamping mechanism (3) comprises a first clamping frame (301) which is connected to the support column (1) in a clamping manner, one side of each first clamping frame (301) is fixedly provided with a connecting column (305), the outer side of each first clamping frame (301) is provided with a second clamping frame (302) in a clamping manner, the inner side of each second clamping frame (302) is movably provided with two limiting plates (303), and a first spring (304) is fixedly connected between each two limiting plates (303);
a cross beam (4) is arranged between the two support columns (1), mounting plates (12) are welded at two ends of the cross beam (4), clamping cavities (9) are formed in two ends of the cross beam (4), second springs (10) are fixedly arranged in the clamping cavities (9), support plates (11) are fixedly arranged at the ends of the second springs (10), two connecting columns (305) are respectively connected with the interiors of the clamping cavities (9) at two ends of the cross beam (4) in a clamping mode, and the ends of the connecting columns (305) are connected with the support plates (11) in a fitting mode;
the first clamping frame (301), the second clamping frame (302), the limiting plate (303) and the support column (1) are fixedly connected through two groups of first fixing bolts (20), the two groups of first fixing bolts (20) are positioned in the sliding groove (2), the first clamping frame (301), the support column (1) and the mounting plate (12) are fixedly connected through two groups of lengthening bolts (306), and the two groups of lengthening bolts (306) are sleeved with a third spring (307).
2. The fully-mechanized belt conveyor H frame according to claim 1, wherein a movable groove (5) is formed in the second clamping frame (302), mounting seats (6) are fixedly arranged at the bottom ends of the two limiting plates (303), rollers (8) are movably connected to the inside of the mounting seats (6) through pin shafts (7), and the rollers (8) and the mounting seats (6) are movably located in the movable groove (5).
3. The H-frame of the fully-mechanized belt conveyor according to claim 2, wherein the end of the movable groove (5) is provided with a clamping edge, the side edge of the mounting seat (6) is provided with a clamping strip, and the clamping strip is attached and connected to the inner side of the clamping edge.
4. The fully-mechanized belt conveyor H frame according to claim 1, wherein the two limiting plates (303) are respectively attached to the inner sides of the supporting columns (1) under the supporting force of the first springs (304).
5. The fully-mechanized belt conveyor H frame according to claim 1, wherein one end of the third spring (307) is fixedly mounted on one side of the first clamping frame (301), and the other end of the third spring (307) is attached to one side of the mounting plate (12).
6. The fully-mechanized belt conveyor H frame according to claim 1, wherein a connecting plate (16) is welded at the bottom end of the supporting column (1), the connecting plate (16) is fixedly connected with a supporting bottom plate (14) through a second fixing bolt (18), and a plurality of inserting nails (19) are fixedly arranged at the bottom end of the supporting bottom plate (14).
7. The fully-mechanized belt conveyor H frame according to claim 6, wherein the supporting bottom plate (14) is provided with a clamping installation groove (15), the connecting plate (16) is installed in the clamping installation groove (15) in a clamping mode, the supporting bottom plate (14) and the clamping installation groove (15) are provided with corresponding bolt holes (17), and the bolt holes (17) are in threaded connection with the second fixing bolts (18).
8. The H-frame of a fully-mechanized belt conveyor according to claim 1, characterized in that the ends of two support columns (1) are welded with a third frame (13), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667285.0A CN114394378B (en) | 2021-12-31 | 2021-12-31 | H frame of fully-mechanized belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667285.0A CN114394378B (en) | 2021-12-31 | 2021-12-31 | H frame of fully-mechanized belt conveyor |
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| CN114394378A CN114394378A (en) | 2022-04-26 |
| CN114394378B true CN114394378B (en) | 2024-01-23 |
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| CN202111667285.0A Active CN114394378B (en) | 2021-12-31 | 2021-12-31 | H frame of fully-mechanized belt conveyor |
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