CN111959534B - Hand sightseeing vehicle of track - Google Patents
Hand sightseeing vehicle of track Download PDFInfo
- Publication number
- CN111959534B CN111959534B CN202010711725.7A CN202010711725A CN111959534B CN 111959534 B CN111959534 B CN 111959534B CN 202010711725 A CN202010711725 A CN 202010711725A CN 111959534 B CN111959534 B CN 111959534B
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- brake
- wheel
- shaft
- bedplate
- rotating shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D15/00—Other railway vehicles, e.g. scaffold cars; Adaptations of vehicles for use on railways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H7/00—Brakes with braking members co-operating with the track
- B61H7/12—Grippers co-operating frictionally with tracks
Abstract
The invention discloses a rail hand-operated sightseeing vehicle which comprises a bedplate, front wheels, a front wheel shaft, a rocker, a first rotating shaft, a connecting rod, a ratchet mechanism, a second rotating shaft and rear wheels, wherein the front wheels are arranged on the bedplate; the front wheel is rotatably connected with the bedplate through a front wheel shaft, the rocker is rotatably connected with the bedplate through a first rotating shaft, the lower end of the rocker is hinged with one end of a connecting rod through a first pin shaft, the ratchet mechanism comprises an inner wheel and an outer wheel, the inner wheel and the second rotating shaft are coaxially fixed, a second pin shaft is eccentrically arranged on the outer wheel, and the other end of the connecting rod is hinged with the outer wheel through the second pin shaft; the rear wheel is fixed with a second rotating shaft, and the second rotating shaft is rotatably connected with the bedplate. The invention provides a track hand-operated sightseeing vehicle, which can drive the sightseeing vehicle to stably move forwards on a track by shaking a rocker, is convenient to operate, does not need a power supply and can increase the pleasure of sightseeing.
Description
Technical Field
The invention relates to the field of track sightseeing vehicles, in particular to a track hand-operated sightseeing vehicle.
Background
Often have track sightseeing vehicle in domestic scenic spot, the visitor can visit according to the regulation circuit, and track sightseeing vehicle in the current scenic spot generally all adopts the electric drive, or utilizes the battery to supply power, and the continuation of the journey mileage of battery influences the use of sightseeing vehicle in this mode, or adopts the cable power supply, and this mode has the electric leakage risk, and electrically driven sightseeing vehicle has lacked the enjoyment that the visitor oneself was manual. Therefore, a rail hand-operated sightseeing vehicle is needed to be designed, the sightseeing vehicle can be driven to stably move forwards on the rail by shaking the rocker, the operation is convenient, a power supply is not needed, and the pleasure of sightseeing can be increased.
Chinese patent application publication No. CN102897187B, published as 2015, 25.02.2015, entitled "a self-braking mine safety manned vehicle", discloses a self-braking mine safety manned vehicle. The vehicle body with the rear window is provided with a frame, the front side of the frame is provided with a traction frame, a traction frame inserted rod penetrates through the traction frame, the front side of the traction frame is provided with a stopper, the rear part of the traction frame is provided with a manual braking handle, the lower part of the frame is provided with wheels, a frame bottom plate between the front wheel and the rear wheel is provided with a brake guard plate, the inner side of the frame bottom plate is provided with a brake through a braking shaft, and a manned seat handrail are arranged in the vehicle body. The frame is provided with a brake mechanism. But the manned vehicle needs power traction and is not suitable for scenic spot sightseeing scenes.
Disclosure of Invention
The invention provides a rail hand-operated sightseeing vehicle, which can drive the sightseeing vehicle to stably move forwards on a rail by shaking a rocker, is convenient to operate, does not need a power supply and can increase the pleasure of sightseeing, in order to overcome the defects that the rail sightseeing vehicle in a scenic spot is generally electrically driven, so that the problem of inconvenient electricity utilization is caused and the pleasure of a visitor is lacked.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rail hand-operated sightseeing vehicle comprises a bedplate, front wheels, a front wheel shaft, a rocker, a first rotating shaft, a connecting rod, a ratchet mechanism, a second rotating shaft and rear wheels; the front wheel is rotatably connected with the bedplate through a front wheel shaft, the rocker is rotatably connected with the bedplate through a first rotating shaft, the lower end of the rocker is hinged with one end of a connecting rod through a first pin shaft, the ratchet mechanism comprises an inner wheel and an outer wheel, the inner wheel and the second rotating shaft are coaxially fixed, a second pin shaft is eccentrically arranged on the outer wheel, and the other end of the connecting rod is hinged with the outer wheel through the second pin shaft; the rear wheel is fixed with a second rotating shaft, and the second rotating shaft is rotatably connected with the bedplate.
According to the technical scheme, the sightseeing vehicle is placed on the track, the connecting rod is driven to move by shaking the rocker, the ratchet mechanism is further driven to rotate in a clearance mode, and finally the sightseeing vehicle is driven to move forwards.
Preferably, the number of the connecting rods is 2, the number of the ratchet mechanisms is 2, the connecting rods correspond to the ratchet mechanisms one by one, and the second pin shafts on the two ratchet mechanisms are symmetrically distributed along the rotating shaft of the ratchet mechanisms.
In the technical scheme, the two ratchet mechanisms are arranged in a forward direction and a reverse direction, when the rocker is pushed forward, one ratchet mechanism can drive the second rotating shaft to rotate so as to drive the rear wheel to move forward, and the other ratchet mechanism returns in a reverse direction. When the rocker is pulled backwards, the ratchet mechanism which originally drives the rotation does the return operation, and the ratchet mechanism which originally does the return operation drives the rear wheel to move forwards. The structure ensures that the rocker can move forwards when pushed and pulled, reduces the reset time and improves the efficiency.
Preferably, the two connecting rods are symmetrically distributed on the left side and the right side of the rocker. The structure enables the rocker to be stressed more uniformly.
Preferably, the device also comprises a driving gear and a driven gear, wherein the diameter of the driving gear is larger than that of the driven gear; the second rotating shaft comprises a transition shaft and a rear wheel shaft; the driving gear and the ratchet mechanism are fixed on the transition shaft, and the rear wheel and the driven gear are fixed on the rear wheel shaft; the driving gear is meshed with the driven gear. The structure can play the acceleration rate effect, and the rocker shakes once, can drive the rotatory many circles of back wheel, because the rocker itself has lever action, even carry out the acceleration rate, the power that push-and-pull rocker needs is also not big.
Preferably, the upper end of the rocker is provided with a handle. The handle is convenient to operate.
Preferably, the bedplate is provided with a guardrail. The guardrail can play the guard action.
Preferably, the speed limiting mechanism comprises a rotating wheel, a friction wheel cover, a friction block and a telescopic spring, the rotating wheel is coaxially fixed with a front wheel shaft, the front wheel shaft is provided with a radially arranged sliding groove, the friction block is in sliding connection with the rotating wheel through the sliding groove, one end of the telescopic spring is connected with the friction block, the other end of the telescopic spring is connected with the rotating wheel, the friction wheel cover is fixed with the bedplate, the friction wheel cover is coaxially arranged with the rotating wheel, and the friction block is in contact with the inner side wall of the friction wheel cover when extending out.
The speed limiting mechanism can play a good role in limiting speed and avoid the condition that the speed of the sightseeing vehicle is too fast. When the vehicle speed is accelerated, the rotating wheel rotates rapidly, the friction block overcomes the elasticity of the telescopic spring to move outwards under the action of centrifugal force, and the friction block is in contact with the friction wheel cover to generate friction to decelerate; and the faster the speed is, the greater the friction force is, and the more obvious the deceleration effect is. The structure can effectively avoid accidents caused by too fast speed.
Preferably, the brake mechanism comprises a brake pad, a connecting block, a brake spring, a brake disc, a connecting rod and a hand brake rod; the connecting rod is rotatably connected with the bedplate, the hand brake rod is fixed with the upper end of the connecting rod, the brake disc is fixed with the lower end of the connecting rod, the connecting block is connected with the bedplate in a sliding manner, one end of the connecting block is fixed with the brake pad, and the other end of the connecting block is contacted with the brake disc; the section of the brake disc is oval; one end of the brake spring is connected with the bedplate, and the other end of the brake spring is connected with the connecting block.
In the above-mentioned structure, the brake block is direct and the contact of track inside wall, and when the manual brake pole was rotatory, the connecting rod rotated together, and the brake disc is rotatory thereupon, because the cross-section of brake disc is oval, and the lateral wall of brake disc promotes the outside translation of connecting block, and the brake block brakes with the contact of track inside wall. Above-mentioned brake mechanism can brake the sightseeing vehicle when the manual brake pole is rotatory, and the brake block is direct and the contact of track inside wall, can play spacing fixed action to the sightseeing vehicle, prevents that the sightseeing vehicle from breaking away from the track.
Preferably, the number of the brake pads, the connecting blocks and the brake springs is 2 respectively, and the brake pads, the connecting blocks and the brake springs are in one-to-one correspondence; the connecting blocks are symmetrically distributed on two sides of the brake disc. The technical scheme can ensure that the brake structures are distributed to the brake structure, thereby ensuring the stability of the sightseeing vehicle.
The invention has the beneficial effects that: (1) the sightseeing vehicle can be driven to stably move forwards on the track by shaking the rocker; (2) the two ratchet mechanisms are arranged in a forward and reverse mode, so that the rocker can move forwards when pushed and pulled, the reset time is shortened, and the efficiency is improved; (3) the speed limiting mechanism can play a good role in limiting speed, and can prevent the sightseeing vehicle from being too fast, and the higher the speed is, the higher the friction force is, the more obvious the speed reducing effect is; (4) brake mechanism can brake the sightseeing vehicle when the manual brake pole is rotatory, and the brake block is direct and the contact of track inside wall, can play spacing fixed action to the sightseeing vehicle, prevents that the sightseeing vehicle from breaking away from the track.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic structural view of example 2;
FIG. 4 is a schematic structural view of embodiment 3.
In the figure: the brake comprises a bedplate 1, a front wheel 2, a front wheel shaft 3, a rocker 4, a first rotating shaft 5, a connecting rod 6, a ratchet mechanism 7, a second rotating shaft 8, a transition shaft 8.1, a rear wheel shaft 8.2, a rear wheel 9, a first pin shaft 10, a second pin shaft 11, a driving gear 12, a driven gear 13, a handle 14, a guardrail 15, a speed limiting mechanism 16, a rotating wheel 16.1, a friction wheel cover 16.2, a friction block 16.3, a telescopic spring 16.4, a sliding groove 16.5, a brake mechanism 17, a brake pad 17.1, a connecting block 17.2, a brake spring 17.3, a brake disc 17.4, a connecting rod 17.5 and a hand brake rod 17.6.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 and fig. 2 (the second pin 11 is not shown in fig. 1), a rail hand-operated sightseeing vehicle comprises a bedplate 1, a front wheel 2, a front wheel shaft 3, a rocker 4, a first rotating shaft 5, a connecting rod 6, a ratchet mechanism 7, a second rotating shaft 8, a rear wheel 9, a driving gear 12 and a driven gear 13, wherein the diameter of the driving gear 12 is larger than that of the driven gear 13; the second rotating shaft 8 comprises a transition shaft 8.1 and a rear wheel shaft 8.2, the transition shaft 8.1 is rotationally connected with the bedplate 1, and the rear wheel shaft 8.2 is rotationally connected with the bedplate 1; the driving gear 12 and the ratchet mechanism 7 are fixed on the transition shaft 8.1, the rear wheel 9 and the driven gear 13 are fixed on the rear wheel shaft 8.2, and the driving gear 12 is meshed with the driven gear 13; the front wheel 2 is rotatably connected with the bedplate 1 through a front wheel shaft 3, the rocker 4 is rotatably connected with the bedplate 1 through a first rotating shaft 5, the upper end of the rocker 4 is provided with a handle 14, the lower end of the rocker 4 is hinged with one end of a connecting rod 6 through a first pin shaft 10, the ratchet mechanism 7 comprises an inner wheel and an outer wheel, the inner wheel is coaxially fixed with a transition shaft 8.1, the outer wheel is eccentrically provided with a second pin shaft 11, and the other end of the connecting rod 6 is hinged with the outer wheel through the second pin shaft 11; the number of the connecting rods 6 is 2, the number of the ratchet mechanisms 7 is 2, the connecting rods 6 correspond to the ratchet mechanisms 7 one by one, and the second pin shafts 11 on the two ratchet mechanisms 7 are symmetrically distributed along the rotating shaft of the ratchet mechanisms 7; 2 connecting rods 6 are distributed on the left side and the right side of the rocker 4; the bedplate 1 is provided with a guardrail 15.
In the technical scheme, the sightseeing bus is placed on the track, the connecting rod 6 is driven to move by shaking the rocker 4, the ratchet mechanism 7 is further driven to rotate in a clearance mode, and finally the sightseeing bus is driven to move forwards. When the rocker 4 is pushed forward, one ratchet mechanism 7 can drive the second rotating shaft 8 to rotate, so as to drive the rear wheel 9 to move forward, and the other ratchet mechanism 7 returns in the opposite direction. When the rocker 4 is pulled backwards, the ratchet mechanism 7 which originally drives the rotation performs the return operation, and the ratchet mechanism 7 which originally performs the return operation drives the rear wheel 9 to advance. The structure ensures that the rocker 4 can move forwards when pushed and pulled, thereby reducing the reset time and improving the efficiency. The gear structure can play the acceleration rate effect, and rocker 4 rocks once, can drive the rotatory many circles of rear wheel 9, because rocker 4 itself has lever action, even carry out the acceleration rate, the power that push-and-pull rocker 4 needs is also not big.
Example 2:
as shown in fig. 3, on the basis of embodiment 1, the speed limiting device further includes a speed limiting mechanism 16, the speed limiting mechanism 16 includes a rotating wheel 16.1, a friction wheel cover 16.2, a friction block 16.3 and a telescopic spring 16.4, the rotating wheel 16.1 is coaxially fixed with the front wheel shaft 3, the front wheel shaft 3 is provided with a sliding slot 16.5 arranged in the radial direction, the friction block 16.3 is slidably connected with the rotating wheel 16.1 through the sliding slot 16.5, one end of the telescopic spring 16.4 is connected with the friction block 16.3, the other end of the telescopic spring 16.4 is connected with the rotating wheel 16.1, the friction wheel cover 16.2 is fixed with the bedplate 1, the friction wheel cover 16.2 is coaxially arranged with the rotating wheel 16.1, and the friction block 16.3 is in contact with the inner side wall of the friction wheel cover 16.2 when extending out.
The speed limiting mechanism 16 can play a good role in limiting speed and avoid the condition that the speed of the sightseeing vehicle is too fast. When the vehicle speed is accelerated, the rotating wheel 16.1 rotates rapidly, the friction block 16.3 overcomes the elasticity of the expansion spring 16.4 to move outwards under the action of centrifugal force, and is in contact with the friction wheel cover 16.2 to generate friction to decelerate; and the faster the speed is, the greater the friction force is, and the more obvious the deceleration effect is. The structure can effectively avoid accidents caused by too fast speed.
Example 3:
as shown in fig. 4, on the basis of embodiment 1, the brake device further comprises a brake mechanism 17, wherein the brake mechanism 17 comprises a brake pad 17.1, a connecting block 17.2, a brake spring 17.3, a brake disc 17.4, a connecting rod 17.5 and a hand brake rod 17.6; the connecting rod 17.5 is rotatably connected with the bedplate 1, the hand brake rod 17.6 is fixed with the upper end of the connecting rod 17.5, the brake disc 17.4 is fixed with the lower end of the connecting rod 17.5, the connecting block 17.2 is slidably connected with the bedplate 1, one end of the connecting block 17.2 is fixed with the brake pad 17.1, and the other end of the connecting block 17.2 is in contact with the brake disc 17.4; the section of the brake disc 17.4 is oval; one end of a brake spring 17.3 is connected with the bedplate 1, and the other end of the brake spring 17.3 is connected with a connecting block 17.2. The number of the brake pads 17.1, the connecting blocks 17.2 and the number of the brake springs 17.3 are respectively 2, and the brake pads 17.1, the connecting blocks 17.2 and the brake springs 17.3 are in one-to-one correspondence; the connecting blocks 17.2 are symmetrically distributed on two sides of the brake disc 17.4.
In the structure, the brake block 17.1 is directly contacted with the inner side wall of the track, when the hand brake rod 17.6 rotates, the connecting rod 17.5 rotates together, the brake disc 17.4 rotates along with the rotation, the cross section of the brake disc 17.4 is oval, the side wall of the brake disc 17.4 pushes the connecting block 17.2 to move horizontally towards the outer side, and the brake block 17.1 is contacted with the inner side wall of the track to brake. Above-mentioned brake mechanism 17 can brake the sightseeing vehicle when manual brake pole 17.6 is rotatory, and brake block 17.1 directly and the contact of track inside wall, can play spacing fixed action to the sightseeing vehicle, prevents that the sightseeing vehicle from breaking away from the track.
The invention has the beneficial effects that: the sightseeing vehicle can be driven to stably move forwards on the track by shaking the rocker; the two ratchet mechanisms are arranged in a forward and reverse mode, so that the rocker can move forwards when pushed and pulled, the reset time is shortened, and the efficiency is improved; the speed limiting mechanism can play a good role in limiting speed, and can prevent the sightseeing vehicle from being too fast, and the higher the speed is, the higher the friction force is, the more obvious the speed reducing effect is; brake mechanism can brake the sightseeing vehicle when the manual brake pole is rotatory, and the brake block is direct and the contact of track inside wall, can play spacing fixed action to the sightseeing vehicle, prevents that the sightseeing vehicle from breaking away from the track.
Claims (5)
1. A rail hand-operated sightseeing vehicle is characterized by comprising a bedplate, front wheels, a front wheel shaft, a rocker, a first rotating shaft, a connecting rod, a ratchet mechanism, a second rotating shaft and rear wheels; the front wheel is rotatably connected with the bedplate through a front wheel shaft, the rocker is rotatably connected with the bedplate through a first rotating shaft, the lower end of the rocker is hinged with one end of a connecting rod through a first pin shaft, the ratchet mechanism comprises an inner wheel and an outer wheel, the inner wheel and the second rotating shaft are coaxially fixed, a second pin shaft is eccentrically arranged on the outer wheel, and the other end of the connecting rod is hinged with the outer wheel through the second pin shaft; the rear wheel is fixed with a second rotating shaft, and the second rotating shaft is rotationally connected with the bedplate; the number of the connecting rods is two, the number of the ratchet mechanisms is two, the connecting rods correspond to the ratchet mechanisms one by one, second pin shafts on the two ratchet mechanisms are symmetrically distributed along a rotating shaft of the ratchet mechanisms, the two ratchet mechanisms are arranged in a positive-negative mode, and the two connecting rods are symmetrically distributed on the left side and the right side of the rocker; the diameter of the driving gear is larger than that of the driven gear; the second rotating shaft comprises a transition shaft and a rear wheel shaft; the driving gear and the ratchet mechanism are fixed on the transition shaft, and the rear wheel and the driven gear are fixed on the rear wheel shaft; the driving gear is meshed with the driven gear.
2. The hand-operated sightseeing vehicle with the rail as claimed in claim 1, wherein the bedplate is provided with a guardrail.
3. The hand-operated sightseeing vehicle with the track as claimed in claim 1, further comprising a speed-limiting mechanism, wherein the speed-limiting mechanism comprises a rotating wheel, a friction wheel cover, a friction block and a telescopic spring, the rotating wheel is coaxially fixed with a front wheel shaft, the front wheel shaft is provided with a radially arranged sliding groove, the friction block is slidably connected with the rotating wheel through the sliding groove, one end of the telescopic spring is connected with the friction block, the other end of the telescopic spring is connected with the rotating wheel, the friction wheel cover is fixed with the bedplate, the friction wheel cover is coaxially arranged with the rotating wheel, and the friction block is in contact with the inner side wall of the friction wheel cover when extending out.
4. The hand-operated sightseeing vehicle with the track as claimed in claim 1, 2 or 3, which is characterized by further comprising a brake mechanism, wherein the brake mechanism comprises a brake pad, a connecting block, a brake spring, a brake disc, a connecting rod and a hand brake rod; the connecting rod is rotatably connected with the bedplate, the hand brake rod is fixed with the upper end of the connecting rod, the brake disc is fixed with the lower end of the connecting rod, the connecting block is connected with the bedplate in a sliding manner, one end of the connecting block is fixed with the brake pad, and the other end of the connecting block is contacted with the brake disc; the section of the brake disc is oval; one end of the brake spring is connected with the bedplate, and the other end of the brake spring is connected with the connecting block.
5. The rail hand-operated sightseeing vehicle as claimed in claim 4, wherein the number of the brake pads, the connecting blocks and the brake springs is 2 respectively, and the brake pads, the connecting blocks and the brake springs are in one-to-one correspondence; the connecting blocks are symmetrically distributed on two sides of the brake disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711725.7A CN111959534B (en) | 2020-07-22 | 2020-07-22 | Hand sightseeing vehicle of track |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010711725.7A CN111959534B (en) | 2020-07-22 | 2020-07-22 | Hand sightseeing vehicle of track |
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| Publication Number | Publication Date |
|---|---|
| CN111959534A CN111959534A (en) | 2020-11-20 |
| CN111959534B true CN111959534B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010711725.7A Active CN111959534B (en) | 2020-07-22 | 2020-07-22 | Hand sightseeing vehicle of track |
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| CN (1) | CN111959534B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113415305B (en) * | 2021-07-16 | 2022-07-01 | 刘书学 | Brake shoe fixing structure convenient for brake shoe replacement |
| CN114852110A (en) * | 2022-04-18 | 2022-08-05 | 浙江天佑铁路设备科技有限公司 | Manpower sightseeing train |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU424765A1 (en) * | 1971-09-07 | 1974-04-25 | Н. Л. Влазнев | MAN CARRIAGE TROLLEY |
| CN102897187A (en) * | 2012-10-22 | 2013-01-30 | 葫芦岛市矿车厂 | Self-braking mine safety manned vehicle |
| CN103693125A (en) * | 2013-12-25 | 2014-04-02 | 天津永恒力商贸有限公司 | Trolley cart special for forklifts |
| CN109249949A (en) * | 2018-10-11 | 2019-01-22 | 常熟市谷雷特机械产品设计有限公司 | A kind of railroad track handcart |
| CN210096124U (en) * | 2019-01-25 | 2020-02-21 | 佛山市容骏医疗美容设备有限公司 | Hand-operated mechanism of hand-operated wheelchair |
-
2020
- 2020-07-22 CN CN202010711725.7A patent/CN111959534B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU424765A1 (en) * | 1971-09-07 | 1974-04-25 | Н. Л. Влазнев | MAN CARRIAGE TROLLEY |
| CN102897187A (en) * | 2012-10-22 | 2013-01-30 | 葫芦岛市矿车厂 | Self-braking mine safety manned vehicle |
| CN103693125A (en) * | 2013-12-25 | 2014-04-02 | 天津永恒力商贸有限公司 | Trolley cart special for forklifts |
| CN109249949A (en) * | 2018-10-11 | 2019-01-22 | 常熟市谷雷特机械产品设计有限公司 | A kind of railroad track handcart |
| CN210096124U (en) * | 2019-01-25 | 2020-02-21 | 佛山市容骏医疗美容设备有限公司 | Hand-operated mechanism of hand-operated wheelchair |
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| CN111959534A (en) | 2020-11-20 |
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