CN215048045U - Crane for road construction - Google Patents
Crane for road construction Download PDFInfo
- Publication number
- CN215048045U CN215048045U CN202022978422.XU CN202022978422U CN215048045U CN 215048045 U CN215048045 U CN 215048045U CN 202022978422 U CN202022978422 U CN 202022978422U CN 215048045 U CN215048045 U CN 215048045U
- Authority
- CN
- China
- Prior art keywords
- arm
- crane
- clamping
- road construction
- grip slipper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010276 construction Methods 0.000 title claims abstract description 22
- 210000000078 claw Anatomy 0.000 claims description 14
- 238000000034 method Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 241000288140 Gruiformes Species 0.000 description 9
- 238000009434 installation Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000124872 Grus grus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Images
Landscapes
- Load-Engaging Elements For Cranes (AREA)
Abstract
The utility model relates to a crane that road construction used belongs to the field of road construction equipment, and it includes running gear and the base of setting on running gear, be provided with the arm on the base, the one end that the base was kept away from to the arm is provided with the fixture that is used for the centre gripping pipeline, fixture includes the grip slipper, be provided with three gripper jaws of group on the grip slipper, one of them group gripper jaw is fixed on the grip slipper, and two sets of gripper jaws are located the both sides of fixed gripper jaw respectively in addition to with grip slipper sliding connection. This application has the effect that makes the pipeline more stable at the in-process of hoist and mount.
Description
Technical Field
The utility model belongs to the technical field of road construction equipment and specifically relates to a crane that road construction used is related to.
Background
At present municipal administration pipeline is one of city infrastructure's important constitution, can in time get rid of city ground rainwater, provides industry and domestic water for the city, can also prevent simultaneously that the urban water resource from receiving the pollution, in road construction process, often need lay municipal administration pipeline in advance, and municipal administration pipeline generally is concrete pipe or steel pipe, and weight is great, needs the crane to hoist and mount.
Chinese patent with publication number CN209618727U discloses a fire-fighting pipeline hoisting machine, which comprises a hoisting car for lifting a fire-fighting pipeline and a clamping device for fixing the fire-fighting pipeline and the hoisting car, wherein the hoisting car is a common high-rise hoisting machine, a lifting hook is arranged on the hoisting car, and the hoisting car is started to lift the lifting hook on the hoisting car, so that the lifting rope pulls the fire-fighting pipeline to lift.
In view of the above-mentioned related technologies, the inventor thinks that when a common crane is used for hoisting, the pipeline is prone to shaking in the hoisting process due to the long cable, and the pipeline may collide with other construction equipment or constructors in the shaking process, thereby causing safety accidents.
SUMMERY OF THE UTILITY MODEL
In order to make the pipeline more stable at the in-process of hoist and mount, this application provides a crane that road construction used.
The application provides a crane that road construction used adopts following technical scheme:
the utility model provides a crane that road construction used, includes running gear and the base of setting on running gear, be provided with the arm on the base, the one end that the base was kept away from to the arm is provided with the fixture that is used for centre gripping pipeline, fixture includes the grip slipper, be provided with three gripper jaws of group on the grip slipper, wherein a set of gripper jaw is fixed on the grip slipper, and two sets of gripper jaw are located the both sides of fixed gripper jaw respectively in addition to with grip slipper sliding connection.
Through adopting above-mentioned technical scheme, carry out the centre gripping through the gripper jaw to the pipeline when using, two sets of gliding gripper jaws can adjust according to the length of pipeline, and the centre gripping is comparatively stable, through the removal of arm control grip slipper, is difficult for taking place to rock when with removing the pipeline, makes the pipeline installation process more stable, is difficult for causing the incident.
Optionally, the gripper jaw includes the mounting panel and rotates first jack catch and the second jack catch of connection in the gripper jaw both sides respectively, it is connected with first lead screw to rotate on the mounting panel, first lead screw threaded connection has the drive ring, the both sides of drive ring rotate respectively and are connected with first actuating lever and second actuating lever, first actuating lever rotates with first jack catch to be connected, the second actuating lever rotates with the second jack catch to be connected.
Through adopting above-mentioned technical scheme, when carrying out the centre gripping to the pipeline, with first jack catch and second jack catch joint respectively in the both sides of pipeline, then rotatory first lead screw, first lead screw can order about the drive ring through screw-thread fit and move along the lead screw is upwards, and the drive ring drives first actuating lever and second actuating lever and removes, and then makes first jack catch and second jack catch be close to each other and carry out the centre gripping to the pipeline.
Optionally, the arm is including rotating the flexible arm of connection on the base, the one end that the base was kept away from to flexible arm is provided with the centre gripping arm, the centre gripping arm is connected with the grip slipper, it is connected with first hydro-cylinder to rotate on the base, first hydro-cylinder rotates with flexible arm to be connected, it is connected with the second hydro-cylinder to rotate on the flexible arm, the second hydro-cylinder rotates with the centre gripping arm to be connected.
Through adopting above-mentioned technical scheme, the flexible arm that can drive of first hydro-cylinder and second hydro-cylinder is rotatory with the centre gripping arm, and then realizes the regulation to the holder position.
Optionally, a rotating shaft horizontally arranged is fixed on the clamping arm, a connecting seat is fixed on the clamping seat, and the connecting seat is sleeved on the rotating shaft and is rotatably connected with the rotating shaft.
Through adopting above-mentioned technical scheme, when the centre gripping arm rotated to arbitrary angle, the grip slipper can be parallel with ground all the time under the effect of gravity, when in the subaerial pit of pipe installation, the grip slipper is difficult for colliding with the pit lateral wall, and it is comparatively convenient to use.
Optionally, the clamping holder is rotatably connected with a second lead screw, threads at two ends of the second lead screw are reversely arranged, and two clamping claws slidably connected with the clamping holder are respectively in threaded connection with one end of the second lead screw.
Through adopting above-mentioned technical scheme, rotatory second lead screw, the second lead screw can drive two sets of gripper jaws simultaneously and slide, and it is comparatively convenient to adjust to can make the distance that two gliding gripper jaws removed keep unanimous, during messenger's centre gripping, the atress at grip slipper both ends is comparatively balanced, further improves the stability of centre gripping.
Optionally, a buffer seat is fixed to one side of the first clamping jaw, which is close to the second clamping jaw, and the buffer seat comprises a buffer plate and a first spring for supporting the buffer plate.
Through adopting above-mentioned technical scheme, when carrying out the centre gripping to the pipeline, buffer board and spring can cushion, avoid a pipeline first jack catch and second jack catch to take place great collision, avoid the pipeline impaired.
Optionally, one end of the second screw rod is provided with a rotating handle for driving the screw rod to rotate, and the second screw rod is perpendicular to the rotating handle.
Through adopting above-mentioned technical scheme, rotatory turning handle drives the synchronous revolution of second lead screw, compares in the direct second lead screw of rotatory, and the arm of force is longer, and is comparatively laborsaving.
Optionally, a connecting sleeve is arranged on the rotating handle and is connected with the second screw rod in a sliding mode along the axial direction, a clamping groove used for being matched with the rotating handle in a clamping mode is formed in the clamping seat, and a second spring used for driving the rotating handle to enter the clamping groove is arranged on the second screw rod.
Through adopting above-mentioned technical scheme, when the position of gripper jaw is adjusted to needs, slide the turning handle along the second lead screw, make the turning handle follow joint inslot roll-off to rotatory turning handle, after the regulation finishes, the turning handle slides once more, with turning handle card income joint inslot, under the effect of two elastic forces of spring, the turning handle keeps can not rotatory in the joint inslot, and then avoids taking place to remove at the in-process gripper jaw of hoist and mount pipeline, stability is better.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the mechanical arm controls the clamping seat to move, so that the pipeline is not easy to shake when being moved, and the pipeline installation process is more stable;
2. by arranging the two groups of sliding clamping claws, the positions of the two groups of sliding clamping claws can be adjusted according to the length of the pipeline, so that the clamping stability is further improved;
3. through setting up the second lead screw, the second lead screw can drive two sets of gripper jaws simultaneously and slide, makes the distance that two gliding gripper jaws removed keep unanimous, and during messenger's centre gripping, the atress at grip slipper both ends is comparatively balanced.
Drawings
Fig. 1 is a front view of a crane for road construction according to an embodiment of the present disclosure;
FIG. 2 is a schematic view of the robot arm and clamp structure of FIG. 1;
FIG. 3 is a schematic structural view of the clamping mechanism of FIG. 2;
FIG. 4 is an enlarged partial schematic view of A in FIG. 2;
fig. 5 is a schematic view of the structure of the clamping jaw of fig. 3.
Description of reference numerals: 1. a traveling mechanism; 2. a base; 3. a mechanical arm; 31. a telescopic arm; 32. a first cylinder; 33. a clamp arm; 34. a second cylinder; 4. a clamping mechanism; 41. a clamping seat; 42. a second lead screw; 43. a gripper jaw; 431. mounting a plate; 432. a first jaw; 433. a second jaw; 434. a first lead screw; 435. a drive ring; 436. a first drive lever; 437. a second drive lever; 5. a connecting seat; 6. a rotating shaft; 7. a chute; 8. a wing plate; 9. a load bearing groove; 10. a handle is rotated; 11. connecting sleeves; 12. a guide key; 13. a keyway; 14. a second spring; 15. a limiting groove; 16. a buffer plate; 17. and a first spring.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses crane that road construction used, refer to fig. 1, including running gear 1 and the base 2 of setting on running gear 1, running gear 1 can be wheeled truck, also can be the track chassis, be provided with the revolving stage on base 2, be provided with arm 3 on the revolving stage, the one end that base 2 was kept away from to arm 3 is provided with fixture 4 that is used for the centre gripping pipeline, order about whole device through running gear 1 and remove, and directly carry out centre gripping and installation to the pipeline through the cooperation of arm 3 and fixture 4, comparatively stable in the centre gripping installation.
Referring to fig. 2, fixture 4 includes grip slipper 41, is fixed with connecting seat 5 on the grip slipper 41, and connecting seat 5 is the arch, and the pivot 6 that the level set up is fixed with to the one end that telescopic boom 31 was kept away from to grip arm 33, and connecting seat 5 rotates with pivot 6 to be connected, and when telescopic boom 31 rotated arbitrary angle, grip slipper 41 can revolute pivot 6 and rotate under the effect of gravity, made grip slipper 41 can remain the horizontality throughout.
Referring to fig. 3, three sets of clamping claws 43 are disposed on the lower surface of the clamping seat 41, wherein one set of clamping claws 43 is fixed at the middle portion of the clamping seat 41 in the length direction, and the other two sets of clamping claws 43 are symmetrically distributed at the two ends of the clamping seat 41 and are slidably connected with the clamping seat 41.
The sliding groove 7 is formed in the lower surface of the clamping seat 41 along the length direction, the movable clamping claw 43 is connected in the sliding groove 7 in a sliding mode, wing plates 8 are fixed to two sides of the movable clamping claw 43 respectively, bearing grooves 9 for the wing plates 8 to slide are formed in two sides of the sliding groove 7, and the movable clamping claw 43 can be supported through the cooperation of the wing plates 8 and the bearing grooves.
The last rotation of grip slipper 41 is connected with second lead screw 42, second lead screw 42 sets up along the length direction of grip slipper 41, the screw thread turning at second lead screw both ends is opposite, two gripper jaw 43 with grip slipper 41 sliding connection respectively with the one end threaded connection of second lead screw 42, when rotatory second lead screw 42, second lead screw 42 drives gripper jaw 43 through the screw-thread fit and removes, because the screw thread rotation at second lead screw 42 both ends is different, so two gliding opposite direction of gripper jaw 43, can be close to each other or keep away from each other, the screw thread pitch at second lead screw 42 both ends is unanimous, the distance that makes two sets of gripper jaw 43 remove can keep unanimous, make grip slipper 41 both ends keep balance.
Referring to fig. 4, a rotating handle 10 for driving the screw rod to rotate is arranged at one end of the second screw rod 42, a connecting sleeve 11 is arranged on the rotating handle 10, the connecting sleeve 11 is sleeved on the second screw rod 42 and is slidably connected with the second screw rod 42, a guide key 12 is arranged on the second screw rod 42, a key groove 13 in sliding fit with the guide key 12 is formed in the inner cavity of the connecting sleeve 11 along the length direction, a second spring 14 is fixed on the second screw rod 42, the second spring 14 is fixedly connected with the connecting sleeve 11, and a limiting groove 15 is formed in the clamping seat 41.
Referring to fig. 5, the clamping jaw 43 includes a mounting plate 431, wherein the mounting plate 431 on the clamping jaw 43 fixedly connected to the clamping seat 41 is welded to the clamping seat 41, one end of the mounting plate 431 is hinged to a first clamping jaw 432, the other end of the mounting plate 431 is hinged to a second clamping jaw 433, the first clamping jaw 432 and the second clamping jaw 433 are symmetrically arranged, a first lead screw 434 penetrates through the middle portion of the mounting plate 431 from top to bottom, the first lead screw 434 is rotatably connected to the mounting plate 431, an external thread is arranged on a section of the first lead screw 434 located between the first clamping jaw 432 and the second clamping jaw 433, a driving ring 435 is threadedly connected to the first lead screw 434, a first driving rod 436 and a second driving rod 437 are rotatably connected to two sides of the driving ring 435, the first driving rod 436 is rotatably connected to the first clamping jaw 432, and the second driving rod 437 is rotatably connected to the second clamping jaw 433.
The top end of the first lead screw 434 is provided with a rotating plate, when the first lead screw 434 is rotated, the first lead screw 434 drives the driving ring 435 to move along the length direction of the first lead screw 434 through thread matching, the driving ring 435 drives the first driving rod 436 and the second driving rod 437, and further the first claw 432 and the second claw 433 are close to or far away from each other.
One side that first jack catch 432 and second jack catch 433 are close to each other is provided with buffer board 16 respectively, and one side that two sets of buffer boards 16 are close to each other is the cambered surface, and one side that two sets of buffer boards 16 kept away from each other is fixed with two sets of springs 17 respectively, and spring 17 cooperates with first jack catch 432 or second jack catch 433 joint, when carrying out the centre gripping to the pipeline of different diameters, can pull down spring 17 and buffer board 16, changes cambered surface and pipeline assorted buffer board 16.
The implementation principle of the crane that this application embodiment road construction used does: when carrying out the centre gripping, through the flexible arm 3 of adjusting of first hydro-cylinder 32 and second hydro-cylinder 34, and then adjust the position of grip slipper 41, make first jack catch 432 and second jack catch 433 joint respectively in the both sides of pipeline, when pipeline length is longer, slide the turning handle 10 along second lead screw 42, make turning handle 10 follow joint inslot roll-off, then rotatory turning handle 10, turning handle 10 drives second lead screw 42 rotatory, make the gripper jaw 43 of two sets of removals keep away from each other. Then the rotating handle 10 is clamped into the clamping groove again, then the first screw rod 434 is rotated, the first screw rod 434 drives the driving ring 435 to move upwards along the first screw rod 434 through screw thread matching, the driving ring 435 drives the first driving rod 436 and the second driving rod 437, so that the first claw 432 and the second claw 433 move close to or away from each other to clamp the pipeline, and finally the pipeline is moved through the telescopic adjusting mechanical arm 3 of the first oil cylinder 32 and the second oil cylinder 34.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a crane that road construction used which characterized in that: including running gear (1) and base (2) of setting on running gear (1), be provided with arm (3) on base (2), the one end that base (2) were kept away from in arm (3) is provided with fixture (4) that are used for the centre gripping pipeline, fixture (4) are including grip slipper (41), be provided with three gripper jaw (43) of group on grip slipper (41), wherein a set of gripper jaw (43) are fixed on grip slipper (41), and two sets of gripper jaw (43) are located the both sides of fixed gripper jaw (43) respectively in addition to with grip slipper (41) sliding connection.
2. The crane for road construction according to claim 1, wherein: the gripper jaw (43) include mounting panel (431) and rotate first jack catch (432) and second jack catch (433) of connection in gripper jaw (43) both sides respectively, it is connected with first lead screw (434) to rotate on mounting panel (431), first lead screw threaded connection has drive ring (435), the both sides of drive ring (435) are rotated respectively and are connected with first actuating lever (436) and second actuating lever (437), first actuating lever (436) are rotated with first jack catch (432) and are connected, second actuating lever (437) are rotated with second jack catch (433) and are connected.
3. The crane for road construction according to claim 1, wherein: arm (3) are including rotating flexible arm (31) of connection on base (2), the one end that base (2) were kept away from in flexible arm (31) is provided with centre gripping arm (33), centre gripping arm (33) are connected with grip slipper (41), it is connected with first hydro-cylinder (32) to rotate on base (2), first hydro-cylinder (32) rotate with flexible arm (31) and are connected, it is connected with second hydro-cylinder (34) to rotate on flexible arm (31), second hydro-cylinder (34) rotate with centre gripping arm (33) and are connected.
4. The crane for road construction according to claim 3, wherein: the clamping device is characterized in that a rotating shaft (6) horizontally arranged is fixed on the clamping arm (33), a connecting seat (5) is fixed on the clamping seat (41), and the connecting seat (5) is sleeved on the rotating shaft (6) and is rotatably connected with the rotating shaft (6).
5. The crane for road construction according to claim 2, wherein: the clamping seat (41) is connected with a second screw rod (42) in a rotating mode, threads at two ends of the second screw rod (42) are arranged in a reverse mode, and two clamping claws (43) which are connected with the clamping seat (41) in a sliding mode are connected with one end of the second screw rod (42) in a threaded mode respectively.
6. The crane for road construction according to claim 2, wherein: the first clamping jaw (432) and one side, close to each other, of the second clamping main are respectively and fixedly provided with a buffer seat, and each buffer seat comprises a buffer plate (16) and a first spring (17) used for supporting the buffer plate (16).
7. The crane for road construction according to claim 5, wherein: one end of the second screw rod (42) is provided with a rotating handle (10) for driving the screw rod to rotate, and the second screw rod (42) is perpendicular to the rotating handle (10).
8. The crane for road construction according to claim 7, wherein: be provided with adapter sleeve (11) on turning handle (10), adapter sleeve (11) are along axial and second lead screw (42) sliding connection, be provided with on grip slipper (41) be used for with turning handle (10) joint complex joint groove, be provided with on second lead screw (42) and be used for driving about turning handle (10) to get into spring two (14) in joint groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022978422.XU CN215048045U (en) | 2020-12-08 | 2020-12-08 | Crane for road construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022978422.XU CN215048045U (en) | 2020-12-08 | 2020-12-08 | Crane for road construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215048045U true CN215048045U (en) | 2021-12-07 |
Family
ID=79214379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022978422.XU Expired - Fee Related CN215048045U (en) | 2020-12-08 | 2020-12-08 | Crane for road construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215048045U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933258A (en) * | 2022-06-27 | 2022-08-23 | 河南瀚世实业有限公司 | Fire-fighting pipeline hoist device |
| CN115111432A (en) * | 2022-07-05 | 2022-09-27 | 合肥海博工程设计集团有限公司 | Urban rainwater sewage pipe network construction is with placing structure |
| CN116902780A (en) * | 2023-09-06 | 2023-10-20 | 浙江省工业设备安装集团有限公司 | Pipeline hoisting device for petrochemical construction |
| CN116930663A (en) * | 2023-08-02 | 2023-10-24 | 北京住总第一开发建设有限公司 | Electrical circuit fault detector |
-
2020
- 2020-12-08 CN CN202022978422.XU patent/CN215048045U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114933258A (en) * | 2022-06-27 | 2022-08-23 | 河南瀚世实业有限公司 | Fire-fighting pipeline hoist device |
| CN115111432A (en) * | 2022-07-05 | 2022-09-27 | 合肥海博工程设计集团有限公司 | Urban rainwater sewage pipe network construction is with placing structure |
| CN115111432B (en) * | 2022-07-05 | 2023-08-08 | 合肥海博工程设计集团有限公司 | Urban rainwater sewage pipe network construction is with placing structure |
| CN116930663A (en) * | 2023-08-02 | 2023-10-24 | 北京住总第一开发建设有限公司 | Electrical circuit fault detector |
| CN116930663B (en) * | 2023-08-02 | 2024-03-26 | 北京住总第一开发建设有限公司 | Electrical circuit fault detector |
| CN116902780A (en) * | 2023-09-06 | 2023-10-20 | 浙江省工业设备安装集团有限公司 | Pipeline hoisting device for petrochemical construction |
| CN116902780B (en) * | 2023-09-06 | 2023-12-19 | 浙江省工业设备安装集团有限公司 | Pipeline hoisting device for petrochemical construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215048045U (en) | Crane for road construction | |
| CN108952184B (en) | Assembled building decoration stone material wood-based plate curtain mounting bracket | |
| CN109882214B (en) | Multifunctional arch centering installation trolley | |
| CN110295856B (en) | Hydraulic vertical lifting automatic workover rig | |
| CN213064862U (en) | Pipeline mounting bracket | |
| CN114105005A (en) | Curb installation platform truck | |
| CN210178382U (en) | Multifunctional arch center mounting trolley | |
| CN214693000U (en) | Crawler crane counterweight device | |
| CN111847337B (en) | Movable urban cable well lid opens transfer device fast | |
| CN110318693B (en) | Multifunctional drill rod conveying device | |
| CN210239622U (en) | Multifunctional drill rod conveying device | |
| CN109209451B (en) | Hanging flower basket and tunnel bow member mounting platform truck | |
| CN209067244U (en) | Multiple arch supporting trolley | |
| CN201534329U (en) | Manipulator of cable car for lifting cable on retaining wall | |
| CN216235730U (en) | Hoisting equipment coupling mechanism for civil engineering | |
| CN2835195Y (en) | Automatic balance hydraulic crane device | |
| CN212475809U (en) | Lifting collision protection device of crane | |
| CN216838978U (en) | Bridge overhauls device | |
| CN220664718U (en) | Limiting protective type construction engineering crane | |
| CN220886714U (en) | Transfer tool | |
| CN219753923U (en) | Anti-falling construction platform | |
| CN214399480U (en) | A conveniently unload and transfer device for reinforcing bar coil stock | |
| CN220787831U (en) | Curb installation handling equipment | |
| CN210176333U (en) | Labor-saving motor casing lifting appliance with accurate positioning | |
| CN220317265U (en) | Fire control construction hoist device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |