CN216555170U - High-efficient convenient low noise machinery gearbox - Google Patents

Abstract

The utility model discloses a high-efficiency convenient low-noise mechanical gearbox, which comprises a box body, wherein an output shaft, an input shaft, a gear shifting shaft, a backward shaft and a forward shaft are arranged in a cavity of the box body in a penetrating manner, the output shaft is provided with three front output driven gears and an output gear set, the input shaft is provided with an input driving gear and an input gear set, the gear shifting shaft is provided with an input driven gear and a gear shifting gear set, the backward shaft is provided with a backward gear set, the forward shaft is provided with a forward gear set, the input driving gear is meshed with the input driven gear, each backward driving gear in the gear shifting gear set is meshed with a corresponding driven gear in the backward gear set, each backward forward driving gear in the gear shifting gear set is meshed with a corresponding driven gear in the forward gear set, and a driving gear in the input gear set is meshed with a corresponding driven gear in the output gear set; the utility model has convenient operation and quick transition, can effectively reduce the production cost and improve the economic benefit of users.

Description

High-efficient convenient low noise machinery gearbox

Technical Field

The utility model relates to the technical field of forklift transmission equipment, in particular to a high-efficiency, convenient and low-noise mechanical gearbox.

Background

The forklift is an indispensable operation tool in the logistics industry and widely applied in the market, the forklift gearbox transmits the power of an engine to a drive axle to change the torque and the rotating speed of the engine, the forklift needs to keep light and flexible performance, so the axial size of the forklift gearbox is correspondingly smaller, an input shaft and an output shaft in the forklift gearbox are arranged in parallel in a staggered mode to save the axial size of the forklift gearbox, the current domestic 3T series industrial forklift is provided with a plurality of gears, the mechanical gearbox for operating high and low gears by using two rods is in the beginning of twenty-century and eighty-decade, the forklift is introduced from Japan for decades, one operating rod is used for controlling the switching of front and back gears, the other operating rod is used for controlling the switching of the high and low gears, and the forklift has the defects of complicated operation, large occupied space, long time for transition, high noise and the like, the practical application space of the forklift is limited.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-efficiency, convenient and low-noise mechanical gearbox to solve the problems in the background technology.

In order to achieve the purpose, the utility model is realized by the following technical means:

a high-efficiency convenient low-noise mechanical gearbox comprises a box body, wherein an output shaft, an input shaft, a gear shifting shaft, a reverse shaft and a forward shaft are arranged in parallel in the inner cavity of the box body in a penetrating mode, the output shaft is provided with three output driven gears which rotate synchronously with the output shaft and an output gear set which can rotate relatively to the output shaft, the input shaft is provided with an input driving gear which is synchronous with the input shaft and an input gear set which can rotate synchronously with the input shaft, the gear shifting shaft is provided with an input driven gear which rotates synchronously with the gear shifting shaft and a gear shifting gear set which can rotate relatively to the gear shifting shaft, the reverse shaft is provided with a reverse gear set which rotates synchronously with the reverse shaft, the forward shaft is provided with a forward gear set which rotates synchronously with the forward shaft, the input driving gear is meshed with the input driven gear, and each reverse driving gear in the gear set is meshed with a corresponding driven gear in the reverse gear set, each backward and forward driving gear in the gear shifting gear set is meshed with a corresponding driven gear in the forward gear set, a driving gear in the input gear set is meshed with a corresponding driven gear in the output gear set, a gear selecting and shifting mechanism for driving a gear shifting shaft is arranged on the box body, and the right end part of the output shaft is connected with the difference reducing assembly through a helical gear pair.

Furthermore, the input gear set comprises a front three-output driving gear and a front three-synchronizer assembly, the front three-output driving gear, the front three-synchronizer assembly and the input driving gear are sequentially arranged on the input shaft, and the front three-output driving gear is correspondingly meshed with a front three-output driven gear on the output shaft.

Furthermore, the gear shifting gear set comprises a gear retaining gear set and a gear retaining gear set, wherein the gear retaining gear set is sequentially composed of a previous driving gear, a gear synchronizer assembly and a reverse driving gear, the gear retaining gear set is sequentially composed of a previous two driving gear, a second two driving gear and a reverse two driving gear, the reverse driving gear is correspondingly meshed with a reverse driven gear arranged on a reverse shaft, the reverse two driving gears are correspondingly meshed with reverse driven gears arranged on the reverse shaft, the previous driving gear is correspondingly meshed with a previous driven gear arranged on a forward shaft, and the previous two driving gears are correspondingly meshed with a previous two driven gear arranged on the forward shaft.

Furthermore, the reverse gear set comprises a reverse output driving shaft, a reverse driven tooth and a reverse driven tooth which are sequentially arranged on the reverse shaft.

Furthermore, the forward gear set comprises a front driven gear, a forward output driving gear, a reverse output idler gear and a front two driven gears which are sequentially arranged on the forward shaft.

Further, the gear selecting and shifting mechanism comprises an upper cover, the upper cover is fixed above the box body, a first-gear shifting fork shaft, a second-gear shifting fork shaft and a third-gear shifting fork shaft are arranged in parallel in the inner cavity of the upper cover, a first-gear shifting fork, a second-gear shifting fork and a third-gear shifting fork are respectively arranged on the first-gear shifting fork shaft, the second-gear shifting fork and the third-gear shifting fork, the first-gear shifting fork and the second-gear shifting fork are respectively arranged at the end parts of the first-gear shifting fork shaft and the second-gear shifting fork shaft, a gear selecting shaft is movably arranged on the upper portion of the inner cavity of the upper cover, the right end of the gear selecting and shifting shaft is connected with an operating lever, the middle part of the operating lever is connected with one end of a gear selecting arm which is connected with the gear selecting and shifting shaft in a matched mode, and a gear shifting head matched with each shifting fork shaft is arranged on the gear selecting shaft.

Further, the input shaft is including input shaft A, input shaft B, input shaft A's one end stretch into input shaft B's inner chamber and with input shaft B swing joint, in the upper portion inner chamber of input shaft B installation and box, input driving gear, three fender synchronous ware assemblies, three preceding output driving gears have been installed in proper order to input shaft B's outside, input shaft A's outside movable sleeve is equipped with the telescopic tube, telescopic tube's right side end position is in the inner chamber of bearing frame, be equipped with on the telescopic tube with install bearing frame matched with jump ring B on the box, input shaft A's tip is equipped with jump ring A with telescopic tube matched with.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model has convenient operation and fast transition, can easily and conveniently select and change 3 forward gears and 2 reverse gears by means of the linkage of left-right movement and front-back push-pull of a single operating lever, changes the curing mode of double-lever control high-low gears, can meet the requirement of users on easy and convenient humanization, changes the design of a conventional speed-changing gear by adopting a gear shaving process, reasonably reduces the modulus, increases the number of gear teeth, increases the meshing coefficient of a gear pair, adopts a bevel gear with a beta 23-25 DEG large helical angle, ensures stable gear transmission, reduces the sound of the gear, increases the tooth crest coefficient of the gear from the traditional coefficient 1 to 1.1-1.25 under the principle of avoiding tooth crest interference, can reduce the noise by 3-5 decibels under the same condition, is convenient to replace wearing parts, is convenient, safe and stable, and can effectively reduce the production cost, and the economic benefit of the user is improved.

Description of the drawings:

FIG. 1 is a schematic view of the apparatus of the present invention;

FIG. 2 is a schematic structural view of a gear selecting and shifting mechanism of the device of the present invention;

FIG. 3 is a schematic view of the structure of the input shaft and the output shaft of the device of the present invention;

FIG. 4 is a schematic view of a part of the structure of the apparatus of the present invention;

FIG. 5 is a schematic view of the input shaft assembly of the apparatus of the present invention;

FIG. 6 is a schematic view of the telescopic structure of the input shaft assembly of the device of the present invention.

The specific implementation mode is as follows:

in order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention is further described below with reference to the following examples:

it should be noted that: in the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the utility model.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The utility model relates to a method for preparing a composite material, which comprises the following steps: see the drawings.

In the embodiment, a high-efficiency convenient low-noise mechanical transmission comprises a box body 1, an output shaft 2, an input shaft 3, a gear shifting shaft 4, a reverse shaft 5 and a forward shaft 6 which are arranged in parallel are arranged in an inner cavity of the box body 1 in a penetrating way, a front three-output driven gear 21 which rotates synchronously with the output shaft 2 and an output gear set 22 which can rotate relative to the output shaft are arranged on the output shaft 2, an input driving gear 31 which synchronizes with the input shaft 3 and an input gear set 32 which can rotate synchronously with the input shaft 3 are arranged on the input shaft 3, an input driven gear 41 which rotates synchronously with the gear shifting shaft 4 and a gear shifting gear set 42 which can rotate relative to the gear shifting shaft 4 are arranged on the gear shifting shaft 4, a reverse gear set 51 which rotates synchronously with the reverse shaft 5 is arranged on the reverse shaft 5, and a forward gear set 61 which rotates synchronously with the forward shaft 6 is arranged on the forward shaft 6, the input driving gear 31 is meshed with the input driven gear 41, each reverse driving gear in the gear shifting gear set 42 is meshed with a corresponding driven gear in the reverse gear set 51, each reverse forward driving gear in the gear shifting gear set 42 is meshed with a corresponding driven gear in the forward gear set 61, a driving gear in the input gear set 32 is meshed with a corresponding driven gear in the output gear set 22, the box body 1 is provided with a gear selecting and shifting mechanism 7 for driving a gear shifting shaft, and the right end part of the output shaft 2 is connected with the difference reduction assembly 9 through a helical gear pair 8.

Further, the input gear set 32 includes a front three-output driving gear 33 and a front three-synchronizer assembly 34, the front three-output driving gear 33, the front three-synchronizer assembly 34 and the input driving gear 31 are sequentially mounted on the input shaft 3, and the front three-output driving gear 33 is correspondingly engaged with the front three-output driven gear 21 on the output shaft 2.

Further, the reverse gear set 51 includes a reverse output driving shaft 52, a reverse driven tooth 53, and a reverse driven tooth 54, which are sequentially installed on the reverse shaft.

Further, the forward gear set 61 includes a first driven gear 62, a forward output driving gear 63, a reverse output idler gear 64, and a first two driven gears 65, which are sequentially mounted on the forward shaft.

Further, the gear shift gear set 42 includes a first gear set 43 and a second gear set 44, the first gear set 43 sequentially includes a previous driving gear 431, a first gear synchronizer assembly 432 and a reverse driving gear 433, the second gear set 44 sequentially includes a previous driving gear 441, a second gear synchronizer assembly 442 and a reverse driving gear 443, the reverse driving gear 433 correspondingly engages with a reverse driven gear 62 disposed on the reverse shaft 5, the reverse driving gear 443 correspondingly engages with a reverse driven gear 54 disposed on the reverse shaft 5, the previous driving gear 431 correspondingly engages with a previous driven gear 62 disposed on the forward shaft 6, and the previous driving gear 441 correspondingly engages with a previous driven gear 65 disposed on the forward shaft 6.

As an embodiment of the present invention, further, the output gear set 22 includes an output driven gear 221 installed on the output shaft, and the present invention can realize the operation of corresponding first-reverse-first and second-reverse-second through the following operation chain, the present invention realizes the operation of corresponding first-reverse-first and second-reverse-second through the transmission of the engine, the transmission of the engine through the corresponding input driving gear 31 on the input shaft 3, and then the operation of → shaft, driven input gear, previous driving gear, first-gear synchronizer assembly, reverse-first driving gear, second-gear synchronizer assembly, reverse-second driving gear → forward shaft, previous driven gear, previous two driven gear, reverse output idler, forward output driving gear → output shaft, output driven gear, spiral bevel gear pair, difference reduction assembly → drive axle output, and the operation of previous-reverse-first and second-reverse-second.

And can realize the direct third gear speed fast, its fast transition job chain is as follows: the engine → the input shaft, the three-gear synchronizer assembly, the front three-output driving gear → the output shaft, the front three-output driven gear, the spiral bevel gear pair and the differential assembly → the drive axle output, after power is input through the input shaft, the input shaft is driven, the three-gear synchronizer assembly rotates, and the speed ratio is transmitted to the front three-output driven gear sleeved on the output shaft and the whole output shaft assembly with the front three-output driving gear on the input shaft, so that the power is directly transmitted to the output shaft according to the speed ratio of the rapid transition by the input shaft, the special rapid transition efficiency can be formed, the speed per hour can reach 26.5km/h, and compared with the front two-speed 17.8km/h of a double-rod box, the speed is increased by more than 45%, and the time, the labor and the oil consumption are saved.

Further, the gear selecting and shifting mechanism 7 comprises an upper cover 71, the upper cover 71 is fixed above the box body 1, a first gear shift fork shaft 72, a second gear shift fork shaft 73 and a third gear shift fork shaft 74 are arranged in parallel in an inner cavity of the upper cover 71, a first gear shift fork 75, a second gear shift fork 76 and a third gear shift fork 77 are respectively arranged on the first gear shift fork shaft 72, the second gear shift fork 73 and the third gear shift fork 74, the first gear shift fork 75 and the second gear shift fork 76 are respectively arranged at the end parts of the first gear shift fork shaft 72 and the second gear shift fork shaft 73, the gear selecting and shifting shaft 78 is movably arranged at the upper part of the inner cavity of the upper cover 71, the gear selecting and shifting shaft 78 is connected with a control lever 79, the middle part of the control lever 79 is connected with one end of a gear selecting arm 710 which is connected with the gear selecting and shifting shaft 78 in a matching manner, a gear selecting and shifting head 711 which is matched with each gear shift fork shaft is arranged on the gear selecting shaft 78, when gear shifting is needed, the operation lever 79 passes through the gear selecting and the gear shifting head 711 of the gear selecting and the gear shifting arm 710 and the gear shifting shaft 78, move about in three shifting fork grooves, can select the one that needs keep off, three keep off, when needs are shifted gears, promote forward control rod 79 or backward the pulling, can realize advancing or reversing, can rely on the linkage of moving about and push-and-pull around single control rod, can easily conveniently select 3 and advance the fender, 2 reverse gear of trading, changed the solidification mode that two poles were controlled high-low gear, can satisfy the user to light convenient humanized pursuit.

Further, the input shaft 3 comprises an input shaft a301 and an input shaft B302, one end of the input shaft a301 extends into an inner cavity of the input shaft B302 and is movably connected with the input shaft B302, the input shaft B is installed in an inner cavity of the upper part of the box body 1, an input driving gear 31, a three-gear synchronizer assembly 34 and a front three-output driving gear 33 are sequentially installed outside the input shaft B302, an expansion sleeve 303 is movably sleeved outside the input shaft a301, the right end of the expansion sleeve 303 is located in an inner cavity of the bearing seat 304, a snap spring B305 matched with the bearing seat 304 installed on the box body 1 is arranged on the expansion sleeve 303, a snap spring a306 matched with the expansion sleeve 304 is arranged at the end of the input shaft a301, referring to the attached drawings, the bearing seat with the involute inner spline is fixed on a bracket of an input shaft hole of the transmission case, and the expansion sleeve with the bearing seat inner spline is matched with the bearing seat with the involute outer spline, and is positioned by a corresponding clamp spring B; the input shaft A with involute external splines freely passes through the telescopic sleeve and is matched with corresponding accessories, the joint is positioned by the clamp spring A according to the design requirement, the left end of the input shaft A is connected with an engine output shaft bearing, the right end of the input shaft A is connected with the internal splines of the input shaft B, the input shaft B with involute internal splines and external splines is tightly matched with a corresponding bearing of the left end in the inner cavity of the telescopic sleeve, and the right end of the input shaft B is connected with a corresponding bearing of the inner cavity of the box body, so that the components are independent and integrated, power can be input into each main transmission chain, the corresponding function of the input shaft is ensured, and the requirement of conveniently replacing various easily damaged components in the clutch part can be met because the corresponding components are independently arranged, the clamp spring B can be pulled out, the telescopic sleeve is pushed into the inner cavity of the bearing seat to the right to be limited, and then the clamp spring A is pulled out, the input shaft A is pushed into the inner cavity of the telescopic sleeve rightwards, and the inner cavity of the input shaft B is arranged in a reserved hole of the box body, so that wearing parts (such as a release bearing, a friction part, a pressure plate and the like) needing to be replaced can be conveniently taken down from the front end of the input shaft under the condition that an engine or a gearbox does not need to be disassembled and assembled, the replacement can be easily completed when the recovery is needed, the replacement of the wearing parts can be completed within a few minutes, and the device is very convenient, safe and reliable. Compared with the traditional dismounting method, the time, labor and money are saved by dozens of times.

The embodiments disclosed in the present invention are within the scope of the claims, and the specific embodiments are only for describing the specific embodiments of the present invention, and the scope of the present invention is not limited to the specific embodiments, and the specific embodiments should not be construed as limiting the scope of the claims.

In addition, the present invention does not disclose relevant components in the specification and the drawings, which do not hinder the understanding of the present invention by those skilled in the art, and does not disclose other conventional components of the present invention, which do not hinder the understanding of the present invention by those skilled in the art.

The product structure connection relation falling within the protection scope of the utility model falls within the protection content of the utility model; it is within the spirit of the present invention that conventional technical modifications to the structure of product parts, such as those made in the specific embodiments of the present invention, may be made without departing from the spirit of the present invention.

While certain exemplary embodiments of the utility model have been described above by way of illustration only, it will be apparent to those skilled in the art that the described embodiments may be modified in various different ways without departing from the scope of the utility model. Accordingly, the foregoing description is illustrative in nature and is not to be construed as limiting the scope of the utility model as claimed.

Unless defined otherwise, all academic and scientific terms used herein have the same meaning as is understood by one of ordinary skill in the art to which this invention belongs.

In case of conflict, the present specification, including definitions, will control.

All percentages, parts, ratios, etc., are by weight unless otherwise indicated.

When a value or range of values, preferred range or list of lower preferable values and upper preferable values is given, it should be understood that it specifically discloses any range formed by any pair of values of any lower range limit or preferred value and any upper range limit or preferred value, regardless of whether ranges are separately disclosed. Where a range of numerical values is described herein, unless otherwise stated, the range is intended to include the endpoints of the range and all integers and fractions within the range.

When the term "about" or "approximately" is used to describe a numerical value or an end of a range, the disclosure should be interpreted to include the specific numerical value or end points referred to.

The use of "a" and "an" are merely for convenience and to provide a general context for the utility model. Unless expressly stated otherwise, this description should be read to include one or at least one.

Claims (7)

1. The utility model provides a high-efficient convenient low noise machinery gearbox, including the box, its characterized in that: an output shaft, an input shaft, a gear shifting shaft, a reverse shaft and a forward shaft are arranged in parallel in the inner cavity of the box body in a penetrating mode, the output shaft is provided with three output driven gears which rotate synchronously with the output shaft and an output gear set which can rotate relative to the output shaft, the input shaft is provided with an input driving gear which is synchronous with the input shaft and an input gear set which can rotate synchronously with the input shaft, the gear shifting shaft is provided with an input driven gear which rotates synchronously with the gear shifting shaft and a gear shifting gear set which can rotate relative to the gear shifting shaft, the reverse shaft is provided with a reverse gear set which rotates synchronously with the reverse shaft, the forward shaft is provided with a forward gear set which rotates synchronously with the forward shaft, the input driving gear is meshed with the input driven gear, each reverse driving gear in the gear shifting gear set is meshed with a corresponding driven gear in the reverse gear set, and each reverse driving gear in the gear set is meshed with a corresponding driven gear in the forward gear set, the gearbox is characterized in that a driving gear in the input gear set is meshed with a corresponding driven gear in the output gear set, a gear selecting and shifting mechanism for driving a gear shifting shaft is arranged on the box body, and the right end part of the output shaft is connected with the difference reducing assembly through a helical gear pair.

2. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the input gear set comprises a front three-output driving gear and a front three-synchronizer assembly, the front three-output driving gear, the front three-synchronizer assembly and the input driving gear are sequentially arranged on the input shaft, and the front three-output driving gear is correspondingly meshed with a front three-output driven gear on the output shaft.

3. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the gear shifting gear set comprises a gear group and a gear group, wherein the gear group is composed of a previous driving gear, a gear synchronizer assembly and a reverse driving gear in sequence, the reverse driving gear is correspondingly meshed with a reverse driven gear arranged on a reverse shaft, the reverse driving gear is correspondingly meshed with a reverse driven gear arranged on the reverse shaft, the previous driving gear is correspondingly meshed with a previous driven gear arranged on a forward shaft, and the previous driving gear is correspondingly meshed with a previous driven gear arranged on the forward shaft.

4. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the reverse gear set comprises a reverse output driving shaft, a reverse driven tooth and a reverse driven tooth which are sequentially arranged on the reverse shaft.

5. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the forward gear set comprises a front driven gear, a forward output driving gear, a reverse output idler wheel and front two driven gears which are sequentially arranged on the forward shaft.

6. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the gear selecting and shifting mechanism comprises an upper cover, the upper cover is fixed above the box body, a first-gear shifting fork shaft, a second-gear shifting fork shaft and a third-gear shifting fork shaft are arranged in parallel in the inner cavity of the upper cover, a first-gear shifting fork, a second-gear shifting fork and a third-gear shifting fork are respectively arranged on the first-gear shifting fork shaft, the second-gear shifting fork shaft and the third-gear shifting fork shaft, the first-gear shifting fork and the second-gear shifting fork are respectively arranged at the end parts of the first-gear shifting fork shaft and the second-gear shifting fork shaft, a gear selecting and shifting shaft is movably arranged on the upper portion of the inner cavity of the upper cover, the right end of the gear selecting and shifting shaft is connected with an operating lever, the middle part of the operating lever is connected with one end of a gear selecting arm which is connected with the gear selecting and shifting shaft in a matching manner, and a gear shifting head which is matched with each shifting fork shaft is arranged on the gear selecting and shifting shaft.

7. A high efficiency, convenient and low noise mechanical transmission as defined in claim 1, wherein: the input shaft is including input shaft A, input shaft B, input shaft A's one end stretch into input shaft B's inner chamber and with input shaft B swing joint, in the upper portion inner chamber of input shaft B installation and box, input driving gear, three fender synchronous ware assemblies, the three preceding output driving gears have been installed in proper order to input shaft B's outside, input shaft A's outside movable sleeve is equipped with the telescopic tube, telescopic tube's right side end is located the inner chamber of bearing frame, be equipped with on the telescopic tube and install bearing frame matched with jump ring B on the box, input shaft A's tip is equipped with jump ring A with telescopic tube matched with.

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