CN205891153U

CN205891153U - Quick reinforcement bicycle

Info

Publication number: CN205891153U
Application number: CN201620821316.1U
Authority: CN
Inventors: 黄建学
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-07-29
Filing date: 2016-07-29
Publication date: 2017-01-18
Anticipated expiration: 2026-07-29

Abstract

The utility model provides a quick reinforcement bicycle, including the proper motion driving license body, the driving license body is including frame and rear wheel by oneself, the bicycle is still including controlling push -and -pull crank mechanism, control rack guiding mechanism, canceling release mechanical system and turn right or left mechanism, control push -and -pull crank mechanism all including installing at the epaxial connection bearing of rear wheel wheel, with crank and the push -and -pull rod of being connected the bearing connection, the first bracing piece of being connected with the push -and -pull rod order, the second bracing piece, first rack and second rack, with engaged with gear about first rack and the second rack difference, gear and the coaxial fixed mounting of chain wheel, about rack guiding mechanism respectively with the surface contact of first and second racks of the left and right sides and guide its and gear to mesh mutually, canceling release mechanical system is including fixing the pulley above the frame and striding the cable wire of establishing in pulley disc slot, the both ends of cable wire respectively with the crank fixed connection of the left and right sides. The utility model provides a bicycle has the strong and convenient quick characteristics of climbing capability.

Description

A kind of fast reinforcement bicycle

Technical field

This utility model is related to technical field of transportation means and in particular to a kind of fast reinforcement bicycle.

Background technology

Bicycle, also known as bicycle or bicycle, the small-sized ground vehicles of typically two wheels.Bicycle is a kind of cheap Ride the easily vehicles, be widely used.The existing various structures of bicycle and shape at present, the mountain bike of variable-ratio Also be applied, become urban and rural residents' easily walking-replacing tool, with society science and technology progress and expanding economy, motorcycle, Electric motor car etc. instead of this traditional vehicles substantially.And the appearance with global energy crisis and people protect to environment The enhancing of shield consciousness, bicycle is re-recognized by people once more.But bicycle is laborious and travels slow, it has also become significantly scarce Fall into it is impossible to the rider meeting people requires.In order to solve the defect that bicycle is laborious and rider is slow, traditional method is in trailing wheel Increase flywheel at flywheel, but inventor of the present utility model finds through research, and these for raising climbing capacity and add Fast speed does not have big change, and the consciousness seeking energy-conserving product with people constantly strengthens, particularly urban and rural residents' increasingly phase Look forward to that money climbing capacity is strong, the bicycle of fast and easy and environmental protection and economy occurs early.

Utility model content

The technical problem existing for prior art, this utility model provides a kind of new fast reinforcement bicycle, should be certainly Driving has the characteristics that climbing capacity is strong simultaneously, fast and easy and environmental protection and economy, is applicable not only to city flat road, is more suitable for In the how domatic road in rural area.

In order to solve above-mentioned technical problem, this utility model employs following technical scheme:

A kind of fast reinforcement bicycle, including bicycle body, described bicycle body includes vehicle frame and rear wheel, institute State bicycle and also include left and right push-and-pull crank mechanism, left and right tooth bar guiding mechanism, resetting-mechanism and left-right rotation mechanism, a described left side Right rotating mechanism all includes chain wheel, chain and the flywheel with ratchet, and described chain wheel is arranged on vehicle frame by axis, and left and right two The axis of side disconnects, and the described flywheel with ratchet is fixed on the rear wheel wheel shaft of bicycle body, and described chain engagement connects On chain wheel and the flywheel with ratchet, described left and right push-and-pull crank mechanism all include connecting bearing, crank, push-pull bar, first Strut, second support bar, the first tooth bar, the second rack and pinion, described connection bearing is arranged on the rear wheel of bicycle body On wheel shaft, one end of described crank is fixedly connected with being connected bearing with the middle part of push-pull bar, and the other end of described crank is located at tooth Outside disk and be provided with pedal, one end of described first support bar is flexibly connected with the upper end of push-pull bar, the other end and first One end of tooth bar is fixedly connected, and the other end of described first tooth bar is meshed with gear top, one end of described second support bar Be flexibly connected with the lower end of push-pull bar, the other end is fixedly connected with one end of the second tooth bar, the other end of described second tooth bar with Gear bottom is meshed, and described gear and chain wheel coaxially fixedly mount and be located at the outside of chain wheel, and the diameter of described gear is little In the length of push-pull bar, the girth of described gear is less than the length of the first tooth bar or the second tooth bar, described left and right tooth bar Guiding machine Structure is contacted and guides it to be meshed with gear with the first tooth bar of the left and right sides and the surface of the second tooth bar respectively, described reset machine Structure includes pulley and cable wire, and described pulley is fixed on above vehicle frame, and described cable wire is crossed in the disk groove of pulley, and cable wire Two ends be fixedly connected with the crank of the left and right sides respectively.

Compared with prior art, the fast reinforcement bicycle that this utility model provides, is provided with the left and right sides of bicycle Left push-and-pull crank mechanism, right push-and-pull crank mechanism, left tooth bar guiding mechanism, right tooth bar guiding mechanism, resetting-mechanism, left-hand rotation motivation Structure and right rotating mechanism, and in left and right push-and-pull crank mechanism, one end of crank is connected on rear wheel wheel shaft by connecting bearing, The other end of crank is located at outside chain wheel and is provided with pedal, is consistent with traditional pedal location, passes through Lever principle analysis understands, in the application, the crank structure of setting is substantially the arm of force (crank growth) effectively increasing lever, Thus more strength can be obtained in the case of applying active force same as the prior art, reinforcement effect clearly, has There is very strong climbing capacity, be particularly suitable for the domatic more or steeper road in rural area；Meanwhile, the first tooth bar and the second tooth bar exist Under the periodicity push-and-pull of push-pull bar, first support bar and second support bar drives, the first tooth bar and the second tooth bar will be respectively in teeth Straight line back and forth movement is done in wheel upper and lower, because the girth of gear is less than the length of the first tooth bar or the second tooth bar, thus the One tooth bar and the second tooth bar do once linear motion and will drive pinion rotation one circle, if left and right foot is respectively completed a pedal Scrunch, gear will rotate two circles, and then coaxial chain wheel will be driven to rotate two circles, chain wheel is by by chain and the flywheel with ratchet Drive trailing wheel to move forward two circles, thus be respectively completed a pedal with existing left and right foot and scrunch band movable chain wheel and rotate a circle phase Pace in the application is almost the twice of prior art to ratio, thus has the characteristics that fast and easy and environmental protection and economy.

Further, described left and right tooth bar guiding mechanism all include connecting rod, fixed support, two upper fixing bolts, two Lower fixing bolt, two upper fixing nuts, two lower fixing nuts, two upper holders, two lower holders, upper fixing axle, Lower fixing axle, upper guide bearing and lower guide bearing, described connecting rod is fixed on vehicle frame, and described fixed support includes pole and consolidates Determine frame, one end of described pole is connected with connecting rod, and the other end is connected with fixed mount, and described fixed mount offers interstitial hole and position In the first hole and second hole of interstitial hole both sides, described two upper fixing bolts are arranged in the first hole and the second hole respectively, institute The one end stating two upper holders is screwed onto on upper fixing bolt by upper fixing nut respectively, and fixed axle position is in centre In the hole and one end are clamped between two upper holders, and the other end is fixed in the dead eye of guide bearing, described upper guiding The outer peripheral surface of bearing is contacted with the surface of the first tooth bar；Described two lower fixing bolts are also arranged in the first hole and second respectively Kong Zhong, one end of described two lower holders is screwed onto on lower fixing bolt by lower fixing nut respectively, described lower fixing axle It also is located at middle in the hole and one end is clamped between two lower holders, the other end is fixed in the dead eye of lower guide bearing, The outer peripheral surface of described lower guide bearing is contacted with the surface of the second tooth bar.

Further, described connection bearing is arranged with pad along the axial both sides of rear wheel wheel shaft, in the outside table of pad Nut is fastened with face.

Further, described first support bar and the first tooth bar are integrally formed and make, described second support bar and the second tooth Bar is integrally formed to be made.

Further, the length of described push-pull bar is 4～5 times of gear diameter.

Brief description

Fig. 1 is the fast reinforcement bicycle portion structural representation that this utility model provides.

Fig. 2 is the structural representation of push-and-pull crank mechanism in the fast reinforcement bicycle that this utility model provides.

Fig. 3 is the structural representation of the fast reinforcement bicycle middle rack guiding mechanism that this utility model provides.

Fig. 4 is the left view structural representation of fixed mount in Fig. 3.

Fig. 5 is the structural representation of resetting-mechanism in the fast reinforcement bicycle that this utility model provides.

In figure, 1, bicycle body；11st, vehicle frame；12nd, rear wheel；2nd, left and right push-and-pull crank mechanism；21st, connect bearing； 22nd, crank；23rd, push-pull bar；24th, first support bar；25th, second support bar；26th, the first tooth bar；27th, the second tooth bar；28th, tooth Wheel；3rd, left and right tooth bar guiding mechanism；30th, connecting rod；31st, fixed support；311st, pole；312nd, fixed mount；3121st, interstitial hole； 3122nd, the first hole；3123rd, the second hole；32nd, upper fixing bolt；32 ', lower fixing bolt；33rd, upper fixing nut；33 ', lower fixation Nut；34th, upper holder；34 ', lower holder；35th, upper fixing axle；36th, lower fixing axle；37th, upper guide bearing；38th, lower guiding Bearing；4th, resetting-mechanism；41st, pulley；42nd, cable wire；43rd, screw rod；44th, connector；5th, left-right rotation mechanism；51st, chain wheel；52、 Chain；53rd, the flywheel with ratchet.

Specific embodiment

In order that technological means, creation characteristic, reached purpose and effect that this utility model is realized are easy to understand, under Face combines and is specifically illustrating, and this utility model is expanded on further.

Of the present utility model description in it is to be understood that term " longitudinal ", " radially ", " length ", " width ", " thickness Degree ", " on ", D score, "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", the side of the instruction such as " outward " Position or position relationship are based on orientation shown in the drawings or position relationship, be for only for ease of description this utility model and simplification is retouched State, rather than instruction or the hint device of indication or element must have specific orientation, with specific azimuth configuration and operation, Therefore it is not intended that to restriction of the present utility model.In description of the present utility model, unless otherwise stated, " multiple " contain Justice is two or more.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly Connect；Can be to be mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning in this utility model for the language.

Refer to shown in Fig. 1-5, this utility model provides a kind of fast reinforcement bicycle, including bicycle body 1, described Bicycle body 1 includes vehicle frame 11 and rear wheel 12, and described bicycle also includes left and right push-and-pull crank mechanism 2, left and right tooth bar is led To mechanism 3, resetting-mechanism 4 and left-right rotation mechanism 5, described left-right rotation mechanism 5 all includes chain wheel 51, chain 52 and band ratchet Flywheel 53, described chain wheel 51 is arranged on vehicle frame 11 by axis, and the axis of the left and right sides disconnects, described flying with ratchet Wheel 53 is fixed on rear wheel 12 wheel shaft of bicycle body 1, and described chain 52 engagement is connected to chain wheel 51 and flying with ratchet On wheel 53, described left and right push-and-pull crank mechanism 2 all include connecting bearing 21, crank 22, push-pull bar 23, first support bar 24, the Two support bars 25, the first tooth bar 26, the second tooth bar 27 and gear 28, after described connection bearing 21 is arranged on bicycle body 1 On wheel 12 wheel shaft, one end of described crank 22 is fixedly connected with being connected bearing 21 with the middle part of push-pull bar 23, described crank 22 The other end be located at chain wheel 51 outside and pedal be installed, live in the upper end of one end of described first support bar 24 and push-pull bar 23 It is dynamically connected, the other end is fixedly connected with one end of the first tooth bar 26, the other end of described first tooth bar 26 and gear 28 top phase Engagement, one end of described second support bar 25 is flexibly connected with the lower end of push-pull bar 23, one end of the other end and the second tooth bar 27 It is fixedly connected, the other end of described second tooth bar 27 is meshed with gear 28 bottom, and described gear 28 and chain wheel 51 are coaxially fixed It is mounted to and in the outside of chain wheel 51, and the diameter of described gear 28 is less than the length of push-pull bar 23, the girth of described gear 28 Less than the length of the first tooth bar 26 or the second tooth bar 27, described left and right tooth bar guiding mechanism 3 the first tooth with the left and right sides respectively Bar 26 is contacted with the surface of the second tooth bar 27 and guides it to be meshed with gear 28, and described resetting-mechanism 4 includes pulley 41 and steel Rope 42, described pulley 41 is fixed on above vehicle frame 11, and described cable wire 42 is crossed in the disk groove of pulley 41, and cable wire 41 Two ends are fixedly connected with the crank 22 of the left and right sides respectively.Wherein, resetting-mechanism 4 can be fixed on below saddle On tripod, specifically can be screwed to below saddle by the connector 44 being connected with pulley 41 with screw rod 43.

As specific embodiment, refer to shown in Fig. 3-4, described left and right tooth bar guiding mechanism 3 all includes connecting rod 30, fixes Upper 32, the two lower fixing bolts 32 ' of fixing bolt of 31, two, support, two upper 33, two lower fixing nuts 33 ' of fixing nut, 34, two lower holders 34 ' of holder, upper fixing axle 35, lower fixing axle 36, upper guide bearing 37 and lower guide bearing on two 38, described connecting rod 30 is fixed on vehicle frame 11, and described fixed support 31 includes pole 311 and fixed mount 312, described pole 311 One end be connected with connecting rod 30, the other end is connected with fixed mount 312, and described fixed mount 312 offers interstitial hole 3121 and position In the first hole 3122 and second hole 3123 of interstitial hole 3121 both sides, described two upper fixing bolts 32 are arranged in the first hole respectively 3122 and second in hole 3123, and one end of described two upper holders 34 is screwed onto upper fixation by upper fixing nut 33 respectively On bolt 32, fixed axle 35 is located in interstitial hole 3121 and one end is clamped between two upper holders 34, the other end It is fixed in the dead eye of guide bearing 37, the outer peripheral surface of described upper guide bearing 37 and the surface of the first tooth bar 26 connect Touch；Described two lower fixing bolts 32 ' are also arranged in the first hole 3122 and the second hole 3123 respectively, described two lower holders 34 ' one end is screwed onto on lower fixing bolt 32 ' by lower fixing nut 33 ' respectively, and described lower fixing axle 36 also is located at centre Hole 3121 is interior and one end is clamped between two lower holders 34 ', and the other end is fixed in the dead eye of lower guide bearing 38, institute The outer peripheral surface stating lower guide bearing 38 is contacted with the surface of the second tooth bar 27.Using the left tooth bar guiding mechanism in the present embodiment With right tooth bar guiding mechanism, can respectively the front line direction of the left and right sides the first tooth bar 26 and the second tooth bar 27 be guided, Keep the first tooth bar 26 and the second tooth bar 27 to engage with the effective of gear 28, prevent the first tooth bar 26 and the second tooth bar 27 from tilting upward Rise and depart from and the engaging of gear 28；Meanwhile, by adjusting two upper fixing bolts 32 or/and two lower fixing bolts 32 ' the Position in one hole 3122 and the second hole 3123, can adjust two upper holders 34 or/and two lower holders 34 ' in centre Position in hole 3121, is the position that can adjust fixing axle 35 or/and lower fixing axle 36 in interstitial hole 3121, so Guide bearing 37 or/and lower guide bearing 38 and the exposure level of the first tooth bar 26 or/and the second tooth bar 27 can be adjusted, Engage effect such that it is able to preferably keep the first tooth bar 26 and the second tooth bar 27 and gear 28.

As specific embodiment, described connection bearing 21 is arranged with pad along the axial both sides of rear wheel 12 wheel shaft, in pad Nut is fastened with the outer surface of piece, thus can preferably described connection bearing 21 be fastened on rear wheel 12 wheel shaft, Ensure that the reliability that left and right push-and-pull crank mechanism 2 push-and-pull drives.

As specific embodiment, refer to shown in Fig. 2, described first support bar 24 and the first tooth bar 26 are integrally formed system Become, described second support bar 25 and the second tooth bar 27 are integrally formed and make, i.e. the other end and first of described first support bar 24 One end of tooth bar 26 is integrally formed and is formed, and one end of the other end of described second support bar 25 and the second tooth bar 27 is integrally formed shape Become, thus the power of push-pull bar 23 preferably can be transmitted to the upper and lower of gear 28.

As specific embodiment, refer to shown in Fig. 2, the length of described push-pull bar 23 is 4～5 times of gear 28 diameter, Thus while the upper and lower ensureing preferably to transmit the power on push-pull bar 23 to gear 28, described first tooth bar 26 Interference also will not be produced with the other end of the second tooth bar 27, effectively improve the overall comfortableness of bicycle.Similarly, in design During described crank 22, it should also be noted that between the part such as crank 22 and first support bar 24, second support bar 25 and gear 28 Distance, prevents from interfering each other, and described crank 22 specifically can be allowed to be provided with the left and right two of one end of pedal to bicycle Side offsets, and increases the distance between part such as crank 22 and first support bar 24, second support bar 25 and gear 28.

As specific embodiment, chain wheel 51 in described left-right rotation mechanism, chain 52 and the flywheel with ratchet 53, permissible To be realized using structure same as the prior art, it main difference is that the axis installing left and right sides chain wheel 51 is disconnected Open, that is, when ensureing that left and right sides chain wheel 51 rotates respectively, other side is not involved.

Certainly, the concrete structure composition of described left and right push-and-pull crank mechanism 2, left and right tooth bar guiding mechanism 3 and resetting-mechanism 4 It is not limited thereto, those skilled in the art, on the basis of previous embodiment, can also be come real using other frame modes Existing, as long as disclosure satisfy that corresponding function.

In order to more fully understand the fast reinforcement bicycle that this utility model provides, below will be former to the work of this bicycle Reason is introduced, and is described in detail taking the push-and-pull crank mechanism 2 on right side as a example:

During work, user right crus of diaphragm acts on and is in above horizontal line positioned at this high point of high point, and with vertical curve direction Angle be more than 40 degree at pedal on, crank 22, during pedal scrunching forward, connects bearing 21 rear by driving Rotate on wheel shaft, thus drive be fixedly connected on connect the upper end of the push-pull bar 23 on bearing 21 forward, lower end rotates backward, that is, Form push pull maneuver, thus the first support bar 24 of upper end and the first tooth bar 26 also rotate forward, second support bar 25 and second Tooth bar 27 also rotates backward, and because the first tooth bar 26 is meshed with the top of gear 28, under the second tooth bar 27 and gear 28 Portion is meshed, thus moving gear 28 will be carried to rotate forward, and the rotation of gear 28 will drive coaxial chain wheel 51 to rotate, and chain wheel 51 will Trailing wheel is driven to move forward by chain 52 and the flywheel 53 with ratchet, when pedal is scrunched to laterally zygomorphic with high point low During point, the first tooth bar 26 will carry moving gear 28 to rotate a circle；Now, the crank 22 in left side in resetting-mechanism 4 cable wire 42 to Under upper tractive, reset or be inverted to initial position, that is, pedal has moved at the peak in left side, in the effect of left foot Under, the push-and-pull crank mechanism 2 in left side also will produce and right side identical operational effect.Therefore, under the alternating action of left and right foot, I.e. the first tooth bar and the second tooth bar be under the periodicity push-and-pull of push-pull bar, first support bar and second support bar drives, the first tooth Bar and the second tooth bar are also done straight line back and forth movement in gear upper and lower respectively, thus carrying moving gear to do periodic rotary, The periodic rotary of gear will drive coaxial chain wheel to make periodic rotary, after driving eventually through chain and the flywheel with ratchet Wheel moves forward.

Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, although ginseng According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent, the objective without deviating from technical solutions of the utility model and model Enclose, it all should be covered in the middle of right of the present utility model.

Claims

1. a kind of fast reinforcement bicycle, including bicycle body (1), described bicycle body (1) include vehicle frame (11) and after Wheel (12) it is characterised in that described bicycle also include left and right push-and-pull crank mechanism (2), left and right tooth bar guiding mechanism (3), Resetting-mechanism (4) and left-right rotation mechanism (5), described left-right rotation mechanism (5) all includes chain wheel (51), chain (52) and band spine The flywheel (53) of wheel, described chain wheel (51) is arranged on vehicle frame (11) by axis, and the axis of the left and right sides disconnects, described band The flywheel (53) of ratchet is fixed on rear wheel (12) wheel shaft of bicycle body (1), and described chain (52) engagement is connected to tooth On disk (51) and the flywheel with ratchet (53), described left and right push-and-pull crank mechanism (2) all includes connecting bearing (21), crank (22), push-pull bar (23), first support bar (24), second support bar (25), the first tooth bar (26), the second tooth bar (27) and gear (28), described connection bearing (21) is arranged on rear wheel (12) wheel shaft of bicycle body (1), one end of described crank (22) It is fixedly connected with being connected bearing (21) with the middle part of push-pull bar (23), the other end of described crank (22) is located at outside chain wheel (51) And pedal is installed, one end of described first support bar (24) is flexibly connected with the upper end of push-pull bar (23), the other end and One end of one tooth bar (26) is fixedly connected, and the other end of described first tooth bar (26) is meshed with gear (28) top, and described One end of two support bars (25) is flexibly connected with the lower end of push-pull bar (23), and one end of the other end and the second tooth bar (27) is fixing even Connect, the other end of described second tooth bar (27) is meshed with gear (28) bottom, described gear (28) and chain wheel (51) are coaxially solid Surely it is mounted to and in the outside of chain wheel (51), and the diameter of described gear (28) is less than the length of push-pull bar (23), described gear (28) girth is less than the length of the first tooth bar (26) or the second tooth bar (27), described left and right tooth bar guiding mechanism (3) respectively with First tooth bar (26) of the left and right sides is contacted with the surface of the second tooth bar (27) and guides it to be meshed with gear (28), described multiple Position mechanism (4) includes pulley (41) and cable wire (42), and described pulley (41) is fixed on above vehicle frame, and described cable wire (42) is crossed on In the disk groove of pulley (41), and the two ends of cable wire (42) are fixedly connected with the crank (22) of the left and right sides respectively.

2. fast reinforcement bicycle according to claim 1 is it is characterised in that described left and right tooth bar guiding mechanism (3) is equal Including connecting rod (30), fixed support (31), two upper fixing bolts (32), two lower fixing bolts (32 '), two upper fixing spiral shells Female (33), two lower fixing nuts (33 '), two upper holders (34), two lower holders (34 '), upper fixing axle (35), under Fixing axle (36), upper guide bearing (37) and lower guide bearing (38), described connecting rod (30) is fixed on vehicle frame, and described fixation is propped up Frame (31) includes pole (311) and fixed mount (312), and one end of described pole (311) is connected with connecting rod (30), the other end and consolidating Determine frame (312) to connect, the first hole described fixed mount (312) offering interstitial hole (3121) and being located at interstitial hole both sides (3122) and the second hole (3123), described two upper fixing bolts (32) are arranged in the first hole (3122) and the second hole respectively (3123), in, one end of described two upper holders (34) is screwed onto upper fixing bolt (32) by upper fixing nut (33) respectively On, fixed axle (35) is located in interstitial hole (3121) and one end is clamped between two upper holders (34), the other end It is fixed in the dead eye of guide bearing (37), the outer peripheral surface of described upper guide bearing (37) and the table of the first tooth bar (26) Face contacts；Described two lower fixing bolts (32 ') are also arranged in the first hole (3122) and the second hole (3123) respectively, and described two One end of individual lower holder (34 ') is screwed onto on lower fixing bolt (32 ') by lower fixing nut (33 ') respectively, described lower solid Dead axle (36) also is located in interstitial hole (3121) and one end is clamped between two lower holders (34 '), and the other end is fixed on down In the dead eye of guide bearing (38), the outer peripheral surface of described lower guide bearing (38) is contacted with the surface of the second tooth bar (27).

3. fast reinforcement bicycle according to claim 1 is it is characterised in that described connection bearing (21) is along rear wheel (12) the axial both sides of wheel shaft are arranged with pad, are fastened with nut on the outer surface of pad.

4. fast reinforcement bicycle according to claim 1 is it is characterised in that described first support bar (24) and the first tooth Bar (26) is integrally formed to be made, and described second support bar (25) and the second tooth bar (27) are integrally formed and make.

5. fast reinforcement bicycle according to claim 1 is it is characterised in that the length of described push-pull bar (23) is gear (28) 4～5 times of diameter.