CN205666052U - String instrument tone quality standard is made up and is put - Google Patents

Abstract

The utility model discloses a string instrument tone quality standard is made up and is put, including frame, string instrument fixture device and the transmission that acts as go -between, string instrument fixture device includes elevating system and clamping mechanism, and clamping mechanism fixes on elevating system and follows elevating system up and down translation, and the string instrument is installed on clamping mechanism, the transmission that acts as go -between includes power unit, follower, fine setting elastic mechanism and drive belt, and the drive belt is around establishing between power unit and follower, and the fine setting elastic mechanism matches on the drive belt and makes the drive belt remain suitable rate of tension throughout, the string instrument keeps all strings to match rubbing contact with the drive belt simultaneously through reciprocating of elevating system. The utility model discloses a string instrument tone quality standard is made up and is put, the action of the tailpiece of the standard under the music natural state of can imitating makes the musical instrument board, string etc. Of string instrument obtain the break -in that the exact lasts under the exact energisation mode, makes the musical instrument reach nature, mellow and full, penetrating ideal tone quality state in the short time.

Description

Sound quality of stringed musical instruments training apparatus

Technical field

This utility model relates to musical instrument device field, specifically a kind of sound quality of stringed musical instruments training apparatus.

Background technology

Stringed musical instrument is a big important branch of musical instrument family, and they are with soft and graceful, interesting to listen to tone color and abundant representability Extensively like for people.Stringed musical instrument such as violin, Chinese fiddle etc., its primary structure can be divided into string vibrational system, qin panel vibration system System, each ingredient sophisticated design, they cooperation just can send melodized sound.

As a example by violin, its qin panel vibration system includes bridge, qin plate, fingerboard, sound column, bass bar etc..The qin of new qin Plate due to the molecular structure arrangement each parts closely, in vibrational system can't cooperation so that the sound that vibration sends is done And it is dry.It is generally required to after more than 2 years correctly draw plays use (accuracy in pitch and naturally vibration accurately), due to qin The vibration that the loose and each system of plate molecular structure arrangement is coordinated naturally makes the tonequality of violin become ripe, mellow and full and penetrating string music Device.

In the past, the sound producing of fresh processed violin, it usually needs the frequency of the most desultory use of user, passes through Bow hair on bow constantly carries out friction resonance to string, and through the long period (1 to three year) to qin panel vibration system and String vibrational system carries out lasting excitation, thus improves its tonequality on the whole.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of sound quality of stringed musical instruments training apparatus, and it can make brand-new The stringed musical instrument made completes sound producing training process at short notice.

For solving above-mentioned technical problem, the technical solution of this utility model a kind of sound quality of stringed musical instruments training apparatus is:

A kind of sound quality of stringed musical instruments training apparatus, including support, stringed musical instrument grip device and bracing wire actuating device, described string music Device grip device, bracing wire actuating device are separately fixed on support；Described stringed musical instrument grip device includes elevating mechanism and clamping Mechanism, described clamp system is fixed on elevating mechanism and with elevating mechanism upper and lower translation, and stringed musical instrument is installed on clamp system； Described bracing wire actuating device includes actuating unit, follower, fine setting elastic mechanism and transmission band, and transmission band is equivalent to bend hair Effect, described transmission band is around being located between actuating unit and follower, and fine setting elastic mechanism coupling on the belt and promotes Transmission band remains suitable rate of tension；Stringed musical instrument by elevating mechanism move up and down all of string of holding simultaneously with biography Dynamic band coupling CONTACT WITH FRICTION.

Described stringed musical instrument grip device includes that elevating mechanism and clamp system, described elevating mechanism include fixing seat, are located at Sliding rail frame on fixing seat and slide block, described slide block is threaded connection screw mandrel, and screw mandrel realizes driving by the first reducing motor； Described slide block is movably connected on sliding rail frame；First reducing motor drives screw mandrel to rotate, it is possible to band movable slider moves up and down；Described Clamp system includes the fagging being located on slide block, the support arm being located on fagging, and described fagging and support arm are respectively equipped with multiple folder Headstock, described base of the carrier head is provided with chuck, and the plurality of chuck acts on clamping stringed musical instrument jointly.

Described base of the carrier head has 3, and fagging arranges 2, and supporting arm front end arranges 1.

Being provided with omnidirectional mechanism between described chuck and base of the carrier head, chuck can realize universal rotational relative to base of the carrier head, and Omnidirectional mechanism arranges brake gear, for the position of lock collet.

For fixed structure between the described base of the carrier head being located on fagging and fagging, described in be located at the base of the carrier head of supporting arm front end and lead to Crossing straight-bar to be connected with support arm, straight-bar is through the cylinder seat of supporting arm front end and extends to the other end of cylinder seat, and described straight-bar can be Move back and forth in cylinder seat；Described straight-bar one end is connected with base of the carrier head, and the other end is provided with handle；Between described straight-bar and cylinder seat It is provided with back-moving spring.

Described fagging is rotary structure on slide block, and arranges fixed structure between fagging and slide block.

Described support arm includes main support arm and secondary support arm, and described main support arm one end is fixing with fagging to be connected, the other end and pair Arm is movable connection；Described secondary support arm is provided with multiple long lumbar hole, and described main support arm is provided with and multiple mates with long lumbar hole Installing hole, realizes being connected with secondary support arm by main support arm by screw；Described base of the carrier head is located at the outer end of secondary support arm.

Described main support arm is hinged on the hinged seat of fagging, can realize the adjustable angle between main support arm and fagging, in hinge Joint chair is provided with the arcuate socket with jointed shaft as the center of circle, and main support arm is provided with the circular hole mated with arcuate socket, screw rod through circular hole, Arcuate socket is also spirally connected with nut, thus is fixed with hinged seat by main support arm.

Described secondary support arm at least has one, is connected fixing between two adjacent secondary support arms by above-mentioned connected mode.

Described bracing wire actuating device includes actuating unit, follower, fine setting elastic mechanism and transmission band, described engine Structure is the second reducing motor, is located at the lower section of support；The arbor of described second reducing motor is provided with drivewheel；Follower is Set up two the first symmetrical belt wheels, the second belt wheels in the second reducing motor both sides separately, at described first belt wheel and the second belt wheel In the top of support, and it is fixed on the support being located at support；Described fine setting elastic mechanism has 2 groups, is symmetrically arranged under support Side is also in the both sides of the second reducing motor；2 groups of fine setting elastic mechanisms include the first regulating wheel, the second regulating wheel respectively；Described Having through hole on support, transmission band connects drivewheel, the first belt wheel, the second belt wheel, the first regulating wheel and second through through hole Regulating wheel；Described drivewheel, the first belt wheel, the second belt wheel mate with the medial surface of transmission band, described first regulating wheel, second Bearing up pulley mates with the lateral surface of transmission band.

Described fine setting elastic mechanism includes base, straight-arm and the first regulating wheel, and described straight-arm one end is hinged with base, first Regulating wheel is located at the other end of straight-arm, and the hinged place between support arm and base arranges pivoted arm spring；Pivoted arm spring makes the first regulating wheel Transmission band had tensile force all the time.

Described transmission band material is horse hair, nylon or industrial belt.

Described sound quality of stringed musical instruments training apparatus also include circuit control system, described circuit control system include display screen, Intelligent control module, linear velocity trans, display screen, linear velocity trans are connected with intelligent control module respectively, by intelligence Control module, display screen can show the linear velocity of transmission band, the total kilometrage number of transmission band and working time.

What this utility model can reach has the technical effect that

Compared with prior art, sound quality of stringed musical instruments training apparatus of the present utility model, use stringed musical instrument grip device and draw The structure that line actuating device combines so that transmission band acts on the string of stringed musical instrument all the time, makes stringed musical instrument obtain lasting rubbing Wiping resonance, meanwhile, the string pulling controllable-rate system of transmission band, close with the speed of artificial string pulling, imitates musician's naturalness Under string pulling action, make the qin plate of stringed musical instrument, string etc. obtain correct lasting break-in under correct energisation mode, make happy Device reaches nature, mellow and full, penetrating preferable sound quality states at short notice.

Accompanying drawing explanation

With detailed description of the invention, this utility model is described in further detail below in conjunction with the accompanying drawings:

Fig. 1 is axonometric chart of the present utility model；

Fig. 2 is the axonometric chart of stringed musical instrument grip device of the present utility model；

Fig. 3 is the sectional view of stringed musical instrument grip device of the present utility model；

Fig. 4 is the A portion enlarged drawing of Fig. 3；

Fig. 5 is the axonometric chart of bracing wire actuating device of the present utility model；

Fig. 6 is structural representation Fig. 1 of bracing wire actuating device of the present utility model；

Fig. 7 is structural representation Fig. 2 of bracing wire actuating device of the present utility model；

Fig. 8 is the structural representation of adjustable angle between main support arm of the present utility model and fagging.

Detailed description of the invention

As shown in Figures 1 to 8, this utility model provides a kind of sound quality of stringed musical instruments training apparatus, including support 1, stringed musical instrument Grip device 2 and bracing wire actuating device 3, described stringed musical instrument grip device 2, bracing wire actuating device 3 are separately fixed on support 1； Described stringed musical instrument grip device 2 includes elevating mechanism 201 and clamp system 202, and described clamp system 202 is fixed on elevating mechanism On 201 and with elevating mechanism 201 upper and lower translation, stringed musical instrument is installed on clamp system 202；Described bracing wire actuating device 3 includes Actuating unit 301, follower 302, fine setting elastic mechanism 303 and transmission band 304, transmission band 304 is around being located at actuating unit 301 And between follower 302, fine setting elastic mechanism 303 mates on transmission band 304 and promotes transmission band 304 to remain suitable Rate of tension；Stringed musical instrument mates friction with transmission band 304 by all of string of holding that moves up and down of elevating mechanism 201 simultaneously Contact.

Stringed musical instrument grip device 2 is integrally provided on the translation mechanism of support 1, by translation mechanism, can realize stringed musical instrument Grip device changes in X displacement in, Z-direction.

Described stringed musical instrument grip device 2 includes elevating mechanism 201 and clamp system 202, and described elevating mechanism 201 includes solid Reservation 2011, sliding rail frame 2012 and the slide block 2013 being located on fixing seat 2011, described slide block 2013 is threaded connection screw mandrel 2014, screw mandrel 2014 realizes driving by the first reducing motor 2015；Described slide block 2013 is movably connected on sliding rail frame 2012； First reducing motor 2015 drives screw mandrel 2014 to rotate, it is possible to band movable slider 2013 moves up and down；Described clamp system 202 includes The fagging 2021 being located on slide block 2013, the support arm 2022 being located on fagging 2021, described fagging 2021 and support arm 2022 divide Not being provided with multiple base of the carrier head 2023, described base of the carrier head 2023 is provided with chuck 2024, and the plurality of chuck 2024 acts on folder jointly Tight stringed musical instrument.

Being provided with omnidirectional mechanism between described chuck 2024 and base of the carrier head 2023, chuck 2024 can be real relative to base of the carrier head 2023 Existing universal rotational, and brake gear is set in omnidirectional mechanism, for the position of lock collet 2024.

For fixed structure between the described base of the carrier head 2023 being located on fagging 2021 and fagging 2021, described in be located at support arm The base of the carrier head 2023 of 2022 front ends is connected with support arm 2022 by straight-bar 2025, and straight-bar 2025 is through the cylinder of support arm 2022 front end Seat also extends to the other end of cylinder seat, and described straight-bar 2025 can move back and forth in cylinder seat；Described straight-bar 2025 one end with Base of the carrier head 2023 connects, and the other end is provided with handle 2026；It is provided with back-moving spring 2027 between described straight-bar 2025 and cylinder seat.

Described support arm 2022 includes main support arm 20221 and secondary support arm 20222, described main support arm 20221 one end and fagging 2021 fixing connections, the other end is connected for movable with secondary support arm 20222；Described secondary support arm 20222 is provided with multiple long lumbar hole 20223, described main support arm 20221 is provided with multiple installing hole mated with long lumbar hole 20223, by screw 20224 by master Arm 20221 realizes being connected with secondary support arm 20222；Described base of the carrier head 2023 is located at the outer end of secondary support arm 20222.

Described secondary support arm 20222 at least has one, by above-mentioned connected mode between two adjacent secondary support arms 20222 Connect fixing.

Described main support arm 20221 is hinged on the hinged seat of fagging 2021, can realize main support arm 20221 and fagging 2021 it Between adjustable angle, hinged seat is provided with the arcuate socket 20226 with jointed shaft 20225 as the center of circle, main support arm 20221 is provided with The circular hole mated with arcuate socket 20226, screw rod 20227 through circular hole, arcuate socket 20226 and is spirally connected with nut, thus by master Arm 20221 is fixed with hinged seat.

Described bracing wire actuating device 3 includes actuating unit 301, follower 302, fine setting elastic mechanism 303 and transmission band 304, described actuating unit 301 is the second reducing motor 305, is located at the lower section of support 1；The machine of described second reducing motor 305 Axle is provided with drivewheel 306；Follower 302 is to set up two the first symmetrical belt wheels in the second reducing motor 305 both sides separately 307, the second belt wheel 308, described first belt wheel 307 and the second belt wheel 308 be in the top of support 1, and be fixed on and be located at support 1 Support 309 on；Described fine setting elastic mechanism 303 has 2 groups, is symmetrically arranged at below support 1 and is in the second reducing motor 305 Both sides；2 groups of fine setting elastic mechanisms 303 include first regulating wheel the 3010, second regulating wheel 3011 respectively；Open on described support 1 Through hole 101, transmission band 304 is had to connect drivewheel the 306, first belt wheel the 307, second belt wheel the 308, first tensioning through through hole 101 Wheel 3010 and the second regulating wheel 3011；Described drivewheel the 306, first belt wheel the 307, second belt wheel 308 is interior with transmission band 304 Side is mated, and described first regulating wheel the 3010, second regulating wheel 3011 mates with the lateral surface of transmission band 304.

Described fine setting elastic mechanism 303 includes base 3031, straight-arm 3032 and the first regulating wheel 3010, described straight-arm 3032 One end is hinged with base 3031, and the first regulating wheel 3010 is located at the other end of straight-arm 3032, support arm 3032 and base 3031 it Between hinged place pivoted arm spring (not marking in figure) is set；Pivoted arm spring (not marking in figure) makes the first regulating wheel 3010 to transmission band 304 have tensile force all the time.

All drive belt configuration that can adhere to Colophonium all can use as transmission band, it is preferable that transmission band 304 material is horse Tail, nylon or industrial belt.

Described sound quality of stringed musical instruments training apparatus also include circuit control system, described circuit control system include display screen, Intelligent control module, linear velocity trans, display screen, linear velocity trans are connected with intelligent control module respectively, by intelligence Control module, display screen can show the linear velocity of transmission band, the total kilometrage number of transmission band and working time.

The transmission band 304 rotary motion trace under the drive of the second reducing motor 305 is: circumference continues clockwise or counterclockwise Motion, it is also possible to (this movement locus is the emulation manually drawn and play violin in the short distance reciprocating motion being spaced clockwise, counterclockwise Motion).

Using violin as the stringed musical instrument of the present embodiment, operation principle of the present utility model is explained as follows:

Violin is installed in clamp system 202, during clamping, drives the first reducing motor 2015, makes to move on slide block 2013, Thus drive and move on clamp system 202, the distance between main support arm 20221 and secondary support arm 20222 in regulation support arm 2022, make Chuck 2024 on fagging 2021 and support arm 2022 is apart from the qin plate length of approximate match violin, then, by the qin of violin Down, the flange card of the trailing edge of qin plate sets in two chucks 2024 on fagging 2021 string simultaneously, another side, secondary support arm The base of the carrier head 2023 of 20222 ends is by pull handle 2026, thus drives straight-bar 2025 to be moved rearwards by, and then makes base of the carrier head 2023 synchronizing movings, so that fagging 2021 meets the installing space of violin with chuck 2024 distance on support arm 2022, treat Behind violin alignment position, decontroling handle 2026, back-moving spring 2027 promotes base of the carrier head 2023 to reset, finally, and secondary support arm 20222 On the flange of the front edge that the chuck 2024 of end blocks violin, thus complete the clamping process to violin, finally, little The string part of violin down, and, what the string being between fingerboard with bridge was directed in bracing wire actuating device 3 is in first That section of transmission band 304 between belt wheel 307 and the second belt wheel 308；

Violin of the present utility model is after clamping completes, and its string is down, when with transmission band 304 friction resonance, logical Often need to spread Colophonium on transmission band 304, when pulling the bow, Colophonium has and drops, and the string of violin is down, it is to avoid Colophonium falls Drop in the qin body f hole of violin；

Preferably, fagging 2021 of the present utility model is rotary structure on slide block 2013, and at fagging 2021 with sliding Between block 2013, fixed structure is set.When clamping violin, fagging 2021 can be revolved turnback, by chuck 2024 part court On, this contributes to the clamping speed of violin, easy to setup；

Preferably, base of the carrier head 2023 has 3, and fagging 2021 arranges 2, and support arm 2022 front end arranges 1, so, Violin is realized three-point mount, there is stable snap effect；

Support arm 2022 is made up of multistage, according to various sizes of stringed musical instrument, selects suitable hop count to be spliced into suitably Length, is connected by long lumbar hole 20223 between every section, it is achieved the fine setting of length；

Start the second reducing motor 305, drivewheel 306 drive transmission band 304, transmission band 304 contact the first belt wheel 307, Second belt wheel the 308, first regulating wheel the 3010, second regulating wheel 3011, the first regulating wheel 3010 promotes with the second regulating wheel 3011 Transmission band 304 keeps the frictional force between drivewheel the 306, first belt wheel the 307, second belt wheel 308 very well, further, since the Between one regulating wheel 3010 and straight-arm 3032 and the base 3031 at the second regulating wheel 3011 place hinged and pivoted arm spring is set (in figure Do not mark), so, the first regulating wheel 3010 and the second regulating wheel 3011 are variable to the tensile force of transmission band 304, it is ensured that transmission Band 304 can keep suitable tensile force, such as under any running orbit: to any one stress of transmission band 304, is equal to Adding tensile force at, now, transmission band 304 changes its original running orbit, and the stress point of whole transmission band 304 occurs Changing, the straight-arm 3032 at the first regulating wheel 3010 and the second regulating wheel 3011 place outwards overturns certain angle, reduces first Regulating wheel 3010 and second regulating wheel 3011 compressional deformation to transmission band 304, thus realize the stress equalization of transmission band 304, And keep suitable rate of tension, in the process, first regulating wheel the 3010, second regulating wheel 3011 achieves transmission band 304 Compensating action with four string forced contact of violin；

Elevating mechanism 201 moves down, and makes the violin being fixed on clamp system 202 move down, and 4 strings are near transmission band 304,4 strings of violin are that both sides are low from the height of qin plate, middle high, and so, two middle strings take the lead in and transmission Band 304 contacts and rubs, and now, elevating mechanism 201 continues to move down, string press belt 304, makes transmission band 304 continue to be subject to Power, thus transmission band 304 pressurized between the first belt wheel 307 and the second belt wheel 308 is indent arc 3041, promotes 4 strings Friction can be contacted with transmission band 304 simultaneously, finally complete the friction resonance of the continuous synchronization to string.

A kind of sound quality of stringed musical instruments training apparatus provided this utility model embodiment above is described in detail, this Applying specific case in literary composition to be set forth principle of the present utility model and embodiment, the explanation of above example is simply It is adapted to assist in the technical scheme understood disclosed in this utility model；Simultaneously for one of ordinary skill in the art, according to this reality By novel thought, the most all will change, in sum, this specification content is not It is interpreted as restriction of the present utility model.

Claims (10)

1. a sound quality of stringed musical instruments training apparatus, it is characterised in that: include that support, stringed musical instrument grip device fill with bracing wire transmission Putting, described stringed musical instrument grip device, bracing wire actuating device are separately fixed on support；Described stringed musical instrument grip device includes lifting Mechanism and clamp system, described clamp system is fixed on elevating mechanism and with elevating mechanism upper and lower translation, and stringed musical instrument is installed on On clamp system；Described bracing wire actuating device includes actuating unit, follower, fine setting elastic mechanism and transmission band, transmission band Around being located between actuating unit and follower, fine setting elastic mechanism coupling on the belt and promotes transmission band to remain conjunction Suitable rate of tension；Stringed musical instrument is simultaneously mated friction with transmission band connect by all of string of holding that moves up and down of elevating mechanism Touch.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 1, it is characterised in that: described stringed musical instrument grip device Including elevating mechanism and clamp system, described elevating mechanism includes fixing seat, the sliding rail frame being located on fixing seat and slide block, described Slide block is threaded connection screw mandrel, and screw mandrel realizes driving by the first reducing motor；Described slide block is movably connected on sliding rail frame； First reducing motor drives screw mandrel to rotate, it is possible to band movable slider moves up and down；Described clamp system includes the support being located on slide block Plate, the support arm being located on fagging, described fagging and support arm are respectively equipped with multiple base of the carrier head, and described base of the carrier head is provided with chuck, The plurality of chuck acts on clamping stringed musical instrument jointly.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 2, it is characterised in that: described base of the carrier head has 3, Arranging 2 on fagging, supporting arm front end arranges 1.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 2, it is characterised in that be located at the folder on fagging described in: Be fixed structure between headstock and fagging, described in be located at the base of the carrier head of supporting arm front end and be connected with support arm by straight-bar, straight-bar passes The cylinder seat of supporting arm front end also extends to the other end of cylinder seat, and described straight-bar can move back and forth in cylinder seat；Described straight-bar One end is connected with base of the carrier head, and the other end is provided with handle；It is provided with back-moving spring between described straight-bar and cylinder seat.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 2, it is characterised in that: described support arm includes main support arm With secondary support arm, described secondary support arm at least, described main support arm one end is fixing with fagging to be connected, and the other end props up with adjacent pair Arm has movable attachment structure, also has movable attachment structure between two adjacent secondary support arms；Described movable connection Structure includes being located on multiple long lumbar holes of secondary support arm one end, the multiple installing holes being located at the secondary support arm other end and main support arm Multiple installing holes, the plurality of installing hole realizes mating one to one with multiple long lumbar holes, and screw is through installing hole one to one Realize connecting with adjacent secondary support arm, adjacent two secondary support arms by main support arm with long lumbar hole；Described base of the carrier head is located at most end The outer end of secondary support arm.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 2, it is characterised in that: described main support arm is hinged on support On the hinged seat of plate, the adjustable angle between main support arm and fagging can be realized, hinged seat is provided with jointed shaft as the center of circle Arcuate socket, main support arm is provided with the circular hole mated with arcuate socket, and screw rod through circular hole, arcuate socket and is spirally connected with nut, thus will Main support arm is fixed with hinged seat.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 1, it is characterised in that: described bracing wire actuating device bag Including actuating unit, follower, fine setting elastic mechanism and transmission band, described actuating unit is the second reducing motor, is located at support Lower section；The arbor of described second reducing motor is provided with drivewheel；Follower is to set up separately in the second reducing motor both sides Two the first symmetrical belt wheels, the second belt wheels, described first belt wheel and the second belt wheel be in the top of support, and be fixed on and be located at On the support of support；Described fine setting elastic mechanism has 2 groups, is symmetrically arranged at below support and is in the two of the second reducing motor Side；2 groups of fine setting elastic mechanisms include the first regulating wheel, the second regulating wheel respectively；Having through hole on described support, transmission band passes Through hole connects drivewheel, the first belt wheel, the second belt wheel, the first regulating wheel and the second regulating wheel；Described drivewheel, the first band Wheel, the second belt wheel mate with the medial surface of transmission band, described first regulating wheel, the second regulating wheel and the lateral surface of transmission band Join.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 7, it is characterised in that: described fine setting elastic mechanism bag Including base, straight-arm and the first regulating wheel, described straight-arm one end is hinged with base, and the first regulating wheel is located at the other end of straight-arm, Hinged place between support arm and base arranges pivoted arm spring；Pivoted arm spring makes the first regulating wheel that transmission band is had tensile force all the time.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 1, it is characterised in that: described transmission band material is horse Tail, nylon or industrial belt.

A kind of sound quality of stringed musical instruments training apparatus the most according to claim 1, it is characterised in that: described sound quality of stringed musical instruments is instructed Gasifying device also includes that circuit control system, described circuit control system include that display screen, intelligent control module, linear velocity sense Device, display screen, linear velocity trans are connected with intelligent control module respectively, by intelligent control module, display screen can show The linear velocity of transmission band, the total kilometrage number of transmission band and working time.