CN213541202U - Reversing transmission device - Google Patents

Abstract

The utility model relates to the technical field of transmission of gearboxes, and provides a reversing transmission device which is applied to a gearbox and comprises a driving component, a gear shifting component, an output component, a first synchronizing ring, a second synchronizing ring and a gear sleeve, wherein the driving component comprises a driving shaft and a gear seat structure, and the driving shaft is in transmission connection with the gear seat structure; the output assembly comprises a forward gear, and the forward gear is in meshed connection with the reversing transmission part; the first synchronizing ring and the second synchronizing ring are oppositely arranged on two sides of the tooth holder structure, one ends of the first synchronizing ring and the second synchronizing ring, which face the tooth holder structure, are respectively in rotating connection with the tooth holder structure, and one ends of the first synchronizing ring and the second synchronizing ring, which are deviated from the tooth holder structure, are respectively in sleeve connection with the backward gear and the forward gear; the tooth sleeve is sleeved on the tooth seat structure; the utility model discloses can reduce neutral gear to the reversing in-process card pause or abnormal sound that reverse gear kept off or gos forward, reducing wear prolongs the life of gearbox correspondingly.

Description

Reversing transmission device

Technical Field

The utility model relates to a gearbox transmission technical field particularly, relates to a reversing transmission.

Background

At present, domestic tractors are divided into two types of belt transmission and direct transmission according to the structure of a transmission device, the direct transmission structure mainly comprises a gearbox, a clutch, rear axle central transmission, final transmission and other assemblies, however, the gearbox is longitudinally arranged, and when a sliding gear mode is adopted to shift gears between an advancing gear and a backward gear, because the rotating speeds of the advancing gear and the backward gear are usually different, when reversing and shifting gears, the engagement of the advancing gear and the backward gear is easy to generate blocking and abnormal sound, so that the gear is seriously abraded, and the service life of the gearbox is greatly shortened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem be that the gearbox of current tractor is because the rotational speed that advances to keep off and the backset keeps off is different, and then leads to when shifting the switching-over operation, easily leads to blocking or abnormal sound.

In order to solve the above problem, the utility model provides a reversing transmission device is applied to the gearbox, include:

the driving assembly comprises a driving shaft and a tooth holder structure, and the driving shaft is in transmission connection with the tooth holder structure;

the gear shifting assembly comprises a reverse gear and a reversing transmission part, the reverse gear is sleeved on the driving shaft, and the reverse gear is meshed and connected with the reversing transmission part;

the output assembly comprises a forward gear, and the forward gear is in meshed connection with the reversing transmission part;

the first synchronizing ring is sleeved on the driving shaft;

the first synchronizing ring and the second synchronizing ring are oppositely arranged on two sides of the tooth holder structure, one ends of the first synchronizing ring and the second synchronizing ring, which face the tooth holder structure, are respectively in rotating connection with the tooth holder structure, and one ends of the first synchronizing ring and the second synchronizing ring, which are deviated from the tooth holder structure, are respectively in sleeve connection with the backward gear and the forward gear;

the tooth sleeve is sleeved on the tooth seat structure and is suitable for being movably sleeved on the first synchronizing ring and the tooth seat structure or movably sleeved on the tooth seat structure and the second synchronizing ring.

Optionally, the toothholder structure includes a toothholder body, a second rotating member and a third rotating member, the second rotating member and the third rotating member are respectively disposed at two ends of the toothholder body, the first synchronizing ring includes a first rotating member, the second synchronizing ring includes a fourth rotating member, the first rotating member is matched with and rotatably connected to the second rotating member, and the third rotating member is matched with and rotatably connected to the fourth rotating member;

the outer circumference and the inner circumference of the tooth holder body are respectively provided with a tooth holder outer gear ring and a tooth holder inner gear ring, the driving shaft is embedded into the tooth holder inner gear ring and is suitable for driving the tooth holder body to rotate, and the tooth sleeve is sleeved on the tooth holder outer gear ring.

Optionally, the first synchronizing ring further comprises a first synchronizing outer tooth and a first synchronizing inner tooth, the first synchronizing inner tooth is coaxially arranged on the inner wall of the first synchronizing outer tooth, and the first synchronizing outer tooth is connected with the first rotating member towards one end of the output assembly; the gear sleeve is suitable for being movably sleeved on the first synchronous outer gear and the gear seat outer gear ring and is suitable for driving the first synchronous ring and the gear seat structure to synchronously rotate;

the reverse gear comprises a first reverse external tooth and a second reverse external tooth which are coaxially arranged, and one end of the first reverse external tooth facing the output assembly is connected with the second reverse external tooth; the first synchronous inner tooth sleeve is arranged on the second retrograde outer tooth and is suitable for driving the retrograde gear to rotate, and the first retrograde outer tooth is meshed with the reversing transmission part.

Optionally, the reversing transmission part comprises an idler gear, an idler shaft, a transmission shaft and a multiple gear, wherein the idler gear is sleeved on the idler shaft and is suitable for rotating relative to the idler shaft; the multiple gear is sleeved on the transmission shaft and is suitable for rotating relative to the transmission shaft;

the idler gear is arranged between the retrograde gear and the multiple gear, the idler gear is respectively in meshed connection with the retrograde gear and the multiple gear, and one end, away from the idler gear, of the multiple gear is in meshed connection with the forward gear.

Optionally, the switching-over drive division still includes two bearing parts, the multiple gear includes first gear and second gear, first gear with the second gear is connected, first gear with the second gear is respectively through two the bearing part cover is located on the transmission shaft, just first gear with the second gear is suitable for relatively the transmission shaft rotates, first gear with the second gear respectively with the idler gear with the gear engagement that advances is connected.

Optionally, the second synchronizing ring further comprises a second synchronizing outer tooth and a second synchronizing inner tooth, the second synchronizing inner tooth is coaxially arranged on the inner wall of the second synchronizing outer tooth, and one end of the second synchronizing outer tooth, which faces away from the output assembly, is connected with the fourth rotating member; the gear sleeve is suitable for being movably sleeved on the second synchronous outer gear and the gear seat outer gear ring and is suitable for driving the second synchronous ring and the gear seat structure to synchronously rotate;

the forward gear comprises a first forward external tooth and a second forward external tooth which are coaxially arranged, and one end of the first forward external tooth, which is far away from the driving shaft, is connected with the second forward external tooth; the synchronous inner gear sleeve of second is located on the first preceding external tooth and be suitable for the drive the gear that advances rotates, the second preceding external tooth with the gear engagement that allies oneself with is connected.

Optionally, the output assembly further comprises an output shaft, and the forward gear is sleeved on the output shaft and is suitable for driving the output shaft to rotate synchronously.

Optionally, the toothholder structure further includes a plurality of positioning buffer members, a plurality of mounting holes are formed in the outer circumference of the toothholder structure, and the plurality of positioning buffer members are respectively embedded into the plurality of mounting holes; when the tooth sleeve is sleeved on the tooth seat structure, the positioning buffer piece is suitable for abutting against the inner wall of the tooth sleeve.

Optionally, the location bolster includes compression spring, clamp plate and arch, the inner wall of tooth cover is equipped with a plurality of positioning groove that become the circumference and arrange, compression spring's one end embedding in the mounting hole, compression spring's the other end with the clamp plate is connected, the arch set up in the clamp plate deviates from one of compression spring is served, works as tooth cover sleeve is located during the toothholder structure, the arch is suitable for the embedding in the positioning groove.

Optionally, still include fork assembly, fork assembly with the circumference outer wall of tooth cover is connected, fork assembly is suitable for the drive the relative toothholder structure of tooth cover carries out the displacement.

Compared with the prior art, the utility model is in transmission connection with the tooth base structure through the driving shaft, the driving shaft directly provides power for the tooth base structure, and when the tooth sleeve is sleeved on the tooth base structure, the gear box is in a neutral position; one end of the first synchronous ring facing the tooth holder structure is rotationally connected with the tooth holder structure, one end of the first synchronous ring departing from the tooth holder structure is sleeved with the retrograde gear, when the operating gear sleeve moves towards the direction of the driving shaft, the gear sleeve is sleeved on the first synchronizing ring and the gear seat structure to realize the synchronous motion of the gear seat structure and the first synchronizing ring, at the moment, the rotation of the driving shaft drives the tooth holder structure to rotate, the tooth holder structure drives the retrograde gear to rotate through the first synchronizing ring, the retrograde gear and the forward gear are respectively connected with the reversing transmission part, the reversing transmission part enables the forward gear and the driving shaft to rotate in opposite directions, so that the switching from the neutral gear to the reverse gear is realized, through the transmission structure of the first synchronizing ring, the tooth holder structure and the reverse gear, the tooth holder structure, the first synchronizing ring, the reverse gear, the reversing transmission part and the forward gear keep the same rotating speed, and the blocking or abnormal sound in the reversing process of the reverse gear is reduced.

One end of the second synchronizing ring facing to the tooth holder structure is rotationally connected with the tooth holder structure, one end of the second synchronizing ring departing from the tooth holder structure is sleeved with the front gear, when the operating gear sleeve moves from the gear seat structure to the direction of the output assembly, the gear sleeve is sleeved on the gear seat structure and the second synchronous ring to realize the synchronous motion of the gear seat structure and the second synchronous ring, at the moment, the rotation of the driving shaft drives the tooth holder structure to rotate, the tooth holder structure drives the second synchronous ring and the forward gear to synchronously rotate, the forward gear and the driving shaft rotate in the same direction to realize the shift from neutral gear to forward gear, the second synchronizing ring and the tooth holder structure and the forward gear are driven by the transmission structure of the second synchronizing ring and the forward gear to keep the same rotating speed of the tooth holder structure and the second synchronizing ring and the forward gear, the jamming or abnormal sound in the reversing process of the forward gear is reduced, thereby reducing the wear between the gears in the reversing gear device and correspondingly prolonging the service life of the gearbox.

Drawings

Fig. 1 is a schematic view of an assembly structure of a reversing transmission device according to an embodiment of the present invention;

fig. 2 is an exploded view of the reversing gear according to an embodiment of the present invention;

fig. 3 is one of schematic partial explosion structures of the reversing gear according to the embodiment of the present invention;

fig. 4 is a second schematic view of a partial explosion structure of the reversing transmission according to the embodiment of the present invention;

fig. 5 is an exploded view of a tooth holder structure according to an embodiment of the present invention;

fig. 6 is a schematic structural view of a gear sleeve according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a fork assembly according to an embodiment of the present invention.

Description of reference numerals:

1-gear sleeve; 11-first internal teeth; 12-second internal teeth; 13-positioning the groove; 2-a drive assembly; 21-a drive shaft; 22-a tooth holder structure; 221-a toothholder body; 2211-mounting holes; 222-a second rotating member; 223-a third rotating member; 224-positioning the buffer; 2241-compression spring; 2242-pressing plate; 2243-convex; 3-a gear shift assembly; 31-a reverse gear; 311-first retrograde outer teeth; 312-second retrograde outer teeth; 32-a multiple gear; 321-a first gear; 322-a second gear; 33-an idler gear; 34-an idler shaft; 35-a drive shaft; 4-an output component; 41-forward gear; 411 — first forward outer teeth; 412-second forward outer teeth; 42-an output shaft; 5-a first synchronization ring; 51-a first rotating member; 52-first synchronous outer teeth; 53-first synchronous internal teeth; 6-a second synchronizer ring; 61-a fourth rotating member; 62-a second synchronized outer tooth; 63-a second synchronous internal tooth; 7-a fork assembly; 71-a fork body; 72-a fixation bar; 73-a pushing block; 74-a connecting rod; 75-operating handle.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the terms "an example," "one example," and "one implementation," etc., mean that a particular feature, structure, material, or characteristic described in connection with the example or implementation is included in at least one example or implementation of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or implementation. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

In order to solve the above technical problem, as shown in fig. 1 and 2, the utility model relates to a reversing transmission device is applied to the gearbox, include:

the driving assembly 2 comprises a driving shaft 21 and a tooth holder structure 22, and the driving shaft 21 is in transmission connection with the tooth holder structure 22;

the gear shifting assembly 3 comprises a reverse gear 31 and a reversing transmission part, the reverse gear 31 is sleeved on the driving shaft 21, and the reverse gear 31 is in meshed connection with the reversing transmission part;

the output assembly 4 comprises a forward gear 41, and the forward gear 41 is in meshed connection with the reversing transmission part;

the first synchronizing ring 5 is sleeved on the driving shaft 21;

the first synchronizing ring 5 and the second synchronizing ring 6 are oppositely arranged on two sides of the tooth holder structure 22, one ends of the first synchronizing ring 5 and the second synchronizing ring 6, which face the tooth holder structure 22, are respectively in rotating connection with the tooth holder structure 22, and one ends of the first synchronizing ring 5 and the second synchronizing ring 6, which face away from the tooth holder structure 22, are respectively in sleeve connection with the backward gear 31 and the forward gear 41;

the gear sleeve 1 is sleeved on the gear seat structure 22, and the gear sleeve 1 is suitable for being movably sleeved on the first synchronizing ring 5 and the gear seat structure 22 or movably sleeved on the gear seat structure 22 and the second synchronizing ring 6.

It should be noted that the reversing transmission device is arranged in a gearbox, and can be applied to the fields of tractors, motor vehicles and the like, and is used for changing the steering direction of the forward gear 41, namely the steering direction of the forward gear 41 is opposite to the steering direction of the driving shaft 21; one end of the driving shaft 21 is in driving connection with an external driving source, the driving source is an engine, the other end of the driving shaft 21 sequentially penetrates through the reverse gear 31 and the first synchronous ring 5 and is in driving connection with the central part of the tooth holder structure 22, the driving shaft 21 drives the tooth holder structure 22 to rotate through the driving source, and the driving shaft 21 and the tooth holder structure 22 can be in key connection in a driving mode or can be in tooth meshing with the same tooth number.

In this embodiment, the first synchronizing ring 5 is disposed between the reverse gear 31 and the gear seat structure 22, and one end of the first synchronizing ring 5 is sleeved on a part of the structure of the reverse gear 31, and the other end of the first synchronizing ring 5 is rotatably connected with the gear seat structure 22, when the gear sleeve 1 moves from the gear seat structure 22 to the direction of the driving shaft 21 and is sleeved on the gear seat structure 22 and the first synchronizing ring 5, the gear seat structure 22 and the first synchronizing ring 5 can rotate synchronously, the rotation of the gear seat structure 22 drives the reverse gear 31 to rotate through the first synchronizing ring 5, because the reverse gear 31 is connected with the forward gear 41 through the multiple gear 32, the reverse gear 31 drives the forward gear 41 to rotate through the reversing transmission part, so that the driving shaft 21, the gear seat structure 22 and the first synchronizing ring 5 are opposite to the forward gear 41, thereby realizing the shift from neutral to reverse gear, that is, i.e. through the transmission structure of the first synchronizing ring 5 with the gear seat structure 22 and the reverse gear 31, therefore, the gear seat structure 22 and the first synchronous ring 5 keep the same rotating speed with the reverse gear 31, the multiple gear 32 and the forward gear 41, and the blocking or abnormal sound in the reversing process of the reverse gear is reduced.

Wherein, the second synchronizing ring 6 is arranged between the tooth holder structure 22 and the forward gear 41, and one end of the second synchronizing ring 6 is rotatably connected with the tooth holder structure 22, and the other end of the second synchronizing ring 6 is sleeved on a part of the forward gear 41, when the gear sleeve 1 moves from the neutral position of the tooth holder structure 22 to the direction of the output assembly 4 to the tooth holder structure 22 and the second synchronizing ring 6, at this time, the tooth holder structure 22 and the second synchronizing ring 6 can realize synchronous rotation, that is, the driving shaft 21 rotates to drive the tooth holder structure 22 and the second synchronizing ring 6 to rotate, the forward gear 41 is driven by the second synchronizing ring 6 to rotate, at this time, the forward gear 41 rotates in the same direction as the driving shaft 21, the tooth holder structure 22 and the second synchronizing ring 6, thereby realizing the switching from neutral to forward gear, that is, the transmission structure of the second synchronizing ring 6, the tooth holder structure 22 and the forward gear 41 keeps the same rotating speed as the forward gear 41, and the jamming or abnormal sound in the reversing process of the forward gear is reduced.

In an embodiment of the present invention, as shown in fig. 3, 4 and 5, the toothholder structure 22 includes a toothholder body 221, a second rotating member 222 and a third rotating member 223, the second rotating member 222 and the third rotating member 223 are respectively disposed at two ends of the toothholder body 221, the first synchronizing ring 5 includes a first rotating member 51, the second synchronizing ring 6 includes a fourth rotating member 61, the first rotating member 51 is engaged with and rotatably connected to the second rotating member 222, and the third rotating member 223 is engaged with and rotatably connected to the fourth rotating member 61;

the outer circumference and the inner circumference of the toothholder body 221 are respectively provided with a toothholder outer gear ring and a toothholder inner gear ring, the driving shaft 21 is embedded into the toothholder inner gear ring and is suitable for driving the toothholder body 221 to rotate, and the toothholder outer gear ring is sleeved with the gear sleeve 1.

It should be noted that the second rotating member 222 is disposed at one end of the gear seat body 221 facing the driving shaft 21, the third rotating member 223 is disposed at one end of the gear seat body 221 facing away from the driving shaft 21, the first rotating member 51 is adapted to the second rotating member 222, and the first synchronizing ring 5 is rotatably connected to the second rotating member 222 through the first rotating member 51 to rotate relative to the gear seat body 221; the fourth rotating member 61 is adapted to the third rotating member 223, and the second synchronizing ring 6 is rotatably connected to the third rotating member 223 through the fourth rotating member 61 to rotate relative to the gear seat body 221, so as to ensure that the first synchronizing ring 5 or the second synchronizing ring 6 can be always located on the same central axis with the driving shaft 21 and the gear seat structure 22, thereby ensuring the rotational stability of the first synchronizing ring 5 and the second synchronizing ring 6; the toothholder body 221 is of a circular ring structure, annular external teeth are arranged on the outer circumference of the toothholder body 221, namely the annular external teeth are an outer toothholder gear ring, annular internal teeth are arranged on the inner circumference of the toothholder body 221, namely the annular internal teeth are an inner toothholder gear ring, the driving shaft 21 is embedded into the inner toothholder gear ring of the toothholder structure 22, and the driving shaft 21 is suitable for driving the toothholder body 221 to rotate; the gear sleeve 1 is sleeved on the outer gear ring of the gear seat structure 22, and the gear sleeve 1 is suitable for driving the gear seat body 221 to synchronously rotate; when the gear sleeve 1 is sleeved on the outer gear ring of the gear seat structure 22, the reversing transmission device is in a neutral position; the rotation of the driving shaft 21 can drive the rotation of the gear seat body 221, and in the neutral position, the gear seat structure 22 moves relative to the first synchronizing ring 5 and the second synchronizing ring 6, i.e. the driving shaft 21 and the gear seat structure 22 idle.

In this embodiment, when the second rotating member 222 and the third rotating member 223 are annular ribs, the first rotating member 51 of the first synchronizing ring 5 and the fourth rotating member 61 of the second synchronizing ring 6 are annular grooves, and the annular ribs disposed at both ends of the gear seat structure 22 are adapted to be embedded into the annular grooves of the first synchronizing ring 5 and the second synchronizing ring 6, respectively; or as shown in fig. 3 and 4, the second rotating member 222 and the third rotating member 223 are annular grooves, that is, annular grooves are respectively formed at two ends of the gear seat body 221, and the first rotating member 51 and the fourth rotating member 61 are annular ribs, at this time, the first rotating member 51 and the fourth rotating member 61 which are annular ribs are respectively embedded into the annular grooves at two ends of the gear seat body 221, so that the gear sleeve 1 is conveniently sleeved on the first synchronizing ring 5 and the gear seat body 221 or the second synchronizing ring 6 and the gear seat body 221, and no jamming or abnormal sound occurs.

In an embodiment of the present invention, as shown in fig. 2 to 4, the first synchronizing ring 5 further includes a first synchronizing outer tooth 52 and a first synchronizing inner tooth 53, the first synchronizing inner tooth 53 is coaxially disposed on an inner wall of the first synchronizing outer tooth 52, and one end of the first synchronizing outer tooth 52 facing the output assembly 4 is connected to the first rotating member 51; the gear sleeve 1 is suitable for being movably sleeved on the first synchronous outer gear 52 and the gear seat outer gear ring and is suitable for driving the first synchronous ring 5 and the gear seat structure 22 to synchronously rotate;

the retrograde gear 31 comprises a first retrograde external tooth 311 and a second retrograde external tooth 312 which are coaxially arranged, and one end of the first retrograde external tooth 311 facing the output assembly 4 is connected with the second retrograde external tooth 312; the first synchronous inner teeth 53 are sleeved on the second reverse outer teeth 312 and are suitable for driving the reverse gear 31 to rotate, and the first reverse outer teeth 311 are in meshed connection with the reversing transmission part.

It should be noted that the first synchronous external teeth 52 have the same diameter as the external gear ring of the gear seat on the outer circumference of the gear seat body 221, the first rotating member 51 is matched with the second rotating member 222, the third rotating member 223 is matched with the fourth rotating member 61, and the first synchronous internal teeth 53 are matched with the second reverse external teeth 312 of the reverse gear 31; the first synchronizing external teeth 52 and the first rotating member 51 are integrally provided, and the first retrograde external teeth 311 and the second retrograde external teeth 312 are integrally provided, so that the mechanical strength of the first synchronizing ring 5 and the retrograde gear 31 is ensured; after the retrograde gear 31, the first synchronous ring 5 and the gear seat structure 22 are assembled, the first rotating part 51 of the first synchronous ring 5 is suitable for being embedded into the second rotating part 222 of the gear seat structure 22, the gear sleeve 1 is suitable for being sleeved on the first synchronous external tooth 52 of the first synchronous ring 5 and the gear seat external tooth ring of the gear seat structure 22, the first synchronous internal tooth 53 of the first synchronous ring 5 is sleeved on the second retrograde external tooth 312 of the retrograde gear 31, and the first retrograde external tooth 311 of the retrograde gear 31 is meshed with the reversing transmission part; when the gear sleeve 1 is movably sleeved on the first synchronizing ring 5 and the gear seat structure 22, the driving shaft 21 rotates to drive the gear seat structure 22 to rotate, the gear seat body 221 of the gear seat structure 22 drives the first synchronizing ring 5 and the reverse gear 31 to rotate, the reversing transmission part is meshed with the forward gear 41, the reverse gear 31 rotates the forward gear 41 through the reversing transmission part, the rotating directions of the forward gear 41 and the reverse gear 31 are opposite, and the reversing gear shifting operation between the neutral gear and the reverse gear is realized.

In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the reversing transmission portion includes an idler gear 33, an idler shaft 34, a transmission shaft 35 and a multiple gear 32, wherein the idler gear 33 is sleeved on the idler shaft 34 and is adapted to rotate relative to the idler shaft 34; the multiple gear 32 is sleeved on the transmission shaft 35 and is suitable for rotating relative to the transmission shaft 35;

the idler gear 33 is arranged between the reverse gear 31 and the multiple gear 32, the idler gear 33 is respectively meshed with the reverse gear 31 and the multiple gear 32, and one end, away from the idler gear 33, of the multiple gear 32 is meshed with the forward gear 41.

It should be noted that the idler gear 33 is sleeved on the idler shaft 34 and is suitable for rotating relative to the idler shaft 34, the idler shaft 34 and the transmission shaft 35 are arranged in parallel and are both fixed on a shell of the transmission case, the idler gear 33 is arranged between the reverse gear 31 and the first gear 321 of the multiple gear 32, that is, the idler gear 33 is respectively engaged with the first reverse external teeth 311 and the first gear 321, the idler gear 33 is a gear which plays a role of transmission between two non-contact transmission gears, namely the reverse gear 31 and the multiple gear 32, and is used for changing the rotating direction of the forward gear 41, so that the rotating directions of the forward gear 41 and the reverse gear 31 are opposite, and therefore the idler gear 33 only changes the rotating direction and cannot change the transmission ratio; the first gear 321 and the second gear 322 are fixedly connected, for example, the first gear 321 and the second gear 322 are fixedly connected through a connecting pipe, so as to achieve synchronous rotation.

In an embodiment of the present invention, as shown in fig. 1 and fig. 2, the reversing transmission portion further includes two bearing members, the multiple gear 32 includes a first gear 321 and a second gear 322, the first gear 321 and the second gear 322 are connected, the first gear 321 and the second gear 322 are respectively connected by two bearing members sleeved on the transmission shaft 35, and the first gear 321 and the second gear 322 are suitable for being opposite to the transmission shaft 35, the first gear 321 and the second gear 322 are respectively engaged with the idle gear 33 and the forward gear 41.

It should be noted that, the two bearing members are arranged at intervals and sleeved on the transmission shaft 35, and the first gear 321 and the second gear 322 are respectively sleeved on the two bearing members, so that the first gear 321 and the second gear 322 can rotate more smoothly relative to the transmission shaft 35, that is, the transmission shaft 35 provides a rotational supporting force for the first gear 321 and the second gear 322, and the bearing members make the first gear 321 and the second gear 322 rotate more stably.

In an embodiment of the present invention, as shown in fig. 2-4, the second synchronizing ring 6 further includes a second synchronizing outer tooth 62 and a second synchronizing inner tooth 63, the second synchronizing inner tooth 63 is coaxially disposed on an inner wall of the second synchronizing outer tooth 62, and an end of the second synchronizing outer tooth 62 away from the output assembly 4 is connected to the fourth rotating member 61; the gear sleeve 1 is suitable for being movably sleeved on the second synchronous outer gear 62 and the gear seat outer gear ring and is suitable for driving the second synchronous ring 6 and the gear seat structure 22 to synchronously rotate;

the forward gear 41 comprises a first forward external tooth 411 and a second forward external tooth 412 which are coaxially arranged, and one end of the first forward external tooth 411 facing away from the drive shaft 21 is connected with the second forward external tooth 412; the second synchronous internal teeth 63 are sleeved on the first forward external teeth 411 and are suitable for driving the forward gear 41 to rotate, and the second forward external teeth 412 are meshed with the multiple gear 32.

It should be noted that the second synchronizing external teeth 62 and the fourth rotating member 61 are fixedly connected, and the first forward external teeth 411 and the second forward external teeth 412 are fixedly connected, so as to maintain the mechanical strength of the second synchronizing ring 6 and the forward gear 41; after the gear seat structure 22, the second synchronizing ring 6 and the forward gear 41 are assembled, the fourth rotating member 61 of the second synchronizing ring 6 is adapted to be embedded into the third rotating member 223 of the gear seat body 221, and the second synchronizing internal teeth 63 of the second synchronizing ring 6 are sleeved on the first forward external teeth 411 of the forward gear 41; when the reversing transmission device is in a neutral gear, the gear sleeve 1 is sleeved on the outer gear ring of the gear seat in the outer circumferential direction of the gear seat body 221, and if the gear needs to be switched to a forward gear, the gear sleeve 1 is moved towards the direction of the output assembly 4 and sleeved on the gear seat body 221 and the second synchronizing ring 6, and at this time, the gear seat body 221 and the second synchronizing ring 6 can synchronously rotate; that is, the driving shaft 21 rotates to drive the tooth holder body 221 to rotate, the tooth holder body 221 drives the forward gear 41 to rotate through the second synchronizing ring 6, at this time, the forward gear 41 and the driving shaft 21 rotate in the same direction, through the tooth holder structure 22, the second synchronizing ring 6 and the connection structure between the forward gear 41, the tooth holder structure 22 and the second synchronizing ring 6 keep the same rotating speed with the forward gear 41, and the gear shifting and reversing process jamming or abnormal sound is reduced, so that the abrasion between the gears in the reversing gear device is reduced, and the service life of the gearbox is correspondingly prolonged.

In an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the output assembly 4 further includes an output shaft 42, and the forward gear 41 is sleeved on the output shaft 42 and adapted to drive the output shaft 42 to rotate synchronously.

It should be noted that the output shaft 42 and the forward gear 41 are coaxially fixed, and may be in key connection with each other or may be engaged with teeth of the same number of teeth; wherein the second forward outer teeth 412 of the forward pinion 41; when the gear is a forward gear, the gear sleeve 1 is sleeved on the gear seat body 221 and the second synchronizing ring 6, the driving shaft 21 rotates to drive the second synchronizing ring 6 to rotate by outputting power through the gear seat structure 22, and the second synchronizing ring 6 directly drives the forward gear 41 to rotate and outputs forward power through the output shaft 42. When the gear is a reverse gear, the gear sleeve 1 is movably sleeved on the gear seat structure 22 and the first synchronizing ring 5, the driving shaft 21 rotates to drive the first synchronizing ring 5 to rotate through the output power of the gear seat structure 22, the first synchronizing ring 5 drives the reverse gear 31 to rotate, the reverse gear 31 sequentially drives the idle gear 33, the multiple gear 32 and the forward gear 41 to rotate, and the output shaft 42 outputs backward power.

In an embodiment of the present invention, as shown in fig. 4 and 5, the toothholder structure 22 further includes a plurality of positioning buffers 224, a plurality of mounting holes 2211 are formed in the outer circumference of the toothholder structure 22, and the plurality of positioning buffers 224 are respectively embedded into the plurality of mounting holes 2211; when the gear sleeve 1 is sleeved on the gear seat structure 22, the positioning buffer 224 is adapted to abut against the inner wall of the gear sleeve 1.

The number of the positioning buffers 224 may be three, four or six, the plurality of mounting holes 2211 are equally spaced in the circumferential direction of the tooth socket body 221, and the plurality of positioning buffers 224 are fitted into the plurality of mounting holes 2211; when the reversing transmission device is in a neutral gear, one end of the positioning buffer piece 224 connected with the gear sleeve 1 can play a role in positioning the neutral gear; when the reversing transmission device shifts from a neutral gear to a reverse gear or a forward gear, the positioning buffer piece 224 can play a role in guiding the gear sleeve 1 to move towards the first synchronizing ring 5 or the second synchronizing ring 6, so that the gear sleeve 1 is prevented from rotating or dislocating in the moving process, the gear sleeve 1 can be quickly and accurately sleeved on the first synchronizing ring 5 or the second synchronizing ring 6, and the gear shifting efficiency is improved.

The utility model discloses an embodiment, combine as shown in fig. 5 and 6, location bolster 224 includes compression spring 2241, clamp plate 2242 and arch 2243, the inner wall of tooth cover 1 is equipped with a plurality of positioning groove 13 of circumference range, compression spring 2241's one end embedding in the mounting hole 2211, compression spring 2241's the other end with clamp plate 2242 is connected, arch 2243 set up in clamp plate 2242 deviates from one of compression spring 2241 is served, works as tooth cover 1 cover is located during the toothholder structure 22, arch 2243 is suitable for the embedding in positioning groove 13.

It should be noted that the protrusion 2243 is matched with the positioning groove 13 in shape, the gear sleeve is in a circular ring structure, the first internal tooth 11 and the second internal tooth 12 are respectively arranged at two ends of the inner wall of the circular ring structure, the first internal tooth 11 and the second internal tooth 12 are matched with the outer gear ring of the gear seat structure 22, and the plurality of positioning grooves 13 which are circumferentially arranged are located between the first internal tooth 11 and the second internal tooth 12; when the gear ring is in a neutral gear, the gear ring is sleeved on the outer gear ring of the gear seat on the outer circumference of the gear seat body 221, the compression spring 2241 is in an extending state to push the pressing plate 2242 to the gear sleeve 1, the plurality of protrusions 2243 on the plurality of pressing plates 2242 are positioned in the plurality of positioning grooves 13 which are arranged in a circumferential direction, and the positioning buffer piece 224 plays a role in positioning the neutral gear; when the neutral gear is switched to the reverse gear, the protrusion 2243 moves on the second internal tooth 12, and the compression spring 2241 is in a compression state; when the vehicle is in a reverse gear, the gear sleeve 1 is sleeved on the first synchronous ring 5 and the gear seat body 221, at this time, the first synchronous outer teeth 52 of the first synchronous ring 5 are positioned in the plurality of positioning grooves 13 which are arranged in a circumferential manner, the first inner teeth 11 in the gear sleeve 1 are sleeved on the first synchronous outer teeth 52 of the first synchronous ring 5, the second inner teeth 12 of the gear sleeve 1 are sleeved on the partial structure of the gear seat outer gear ring, at this time, the compression spring 2241 is in an extending state, and at this time, the protrusion 2243 is positioned on one side of the gear sleeve 1 which faces the second synchronous ring 6, so that the limiting effect of the reverse gear is achieved; when the neutral gear is switched to the forward gear, the protrusion 2243 moves on the first internal teeth 11, and the compression spring 2241 is in a compressed state; when being in the fender that advances, the toothholder body 221 and the second synchronizer ring 6 are established to the cover of toothholder 1, and at this moment the partial structure of toothholder outer ring gear is located to the first internal tooth 11 cover of toothholder 1, and on the synchronous external tooth 62 of second synchronizer ring 6 is located to the second internal tooth 12 cover of toothholder 1, at this moment compression spring 2241 is in the state of extending, and arch 2243 is in the one side towards first synchronizer ring 5 of toothholder 1 to the limiting displacement that advances the fender has been played.

In an embodiment of the present invention, as shown in fig. 1, fig. 2 and fig. 3, the reversing transmission device further includes a shift fork assembly 7, the shift fork assembly 7 is connected to the circumferential outer wall of the gear sleeve 1, and the shift fork assembly 7 is adapted to drive the gear sleeve 1 to displace relative to the gear seat structure 22.

It should be noted that the shifting fork assembly 7 is detachably connected with the circumferential outer wall of the gear sleeve 1, if the circumferential outer wall of the gear sleeve 1 is provided with an annular clamping groove, the shifting fork assembly 7 is sleeved in the annular clamping groove, and when the gear sleeve 1 rotates along with the gear seat structure 22, one end of the shifting fork assembly 7 is positioned in the annular clamping groove, so that the gear sleeve 1 can rotate conveniently; the shifting fork assembly 7 is connected with the circumferential outer wall of the gear sleeve 1, when the reverse gear needs to be switched, the shifting fork assembly 7 is operated to drive the gear sleeve 1 to move from the gear seat body 221 to the direction of the driving shaft 21 until the gear sleeve 1 is sleeved on the first synchronizing ring 5 and the gear seat body 221, and the reversing from the neutral gear to the reverse gear is realized; when the forward gear needs to be switched, the shifting fork assembly 7 is operated to drive the gear sleeve 1 to move from the gear seat body 221 to the output assembly 4 until the gear sleeve 1 is sleeved on the second synchronizing ring 6 and the gear seat body 221, so that the reversing from the neutral gear to the forward gear is realized.

In this embodiment, referring to fig. 7, the shift fork assembly 7 includes a shift fork body 71, a fixing rod 72, a pushing block 73, a connecting rod 74 and an operating handle 75, wherein one end of the shift fork body 71 is a fork claw for being sleeved on the circumferential outer wall of the gear sleeve 1, the other end of the shift fork body 71 is connected with one end of the pushing block 73, both the other end and the one end are sleeved outside the fixing rod 72, the shift fork body 71 and the pushing block 73 are both suitable for sliding on the fixing rod 72, the fixing rod 72 is fixed in the casing of the transmission, one end of the pushing block 73 opposite to the shift fork body 71 is provided with a mounting groove, one end of the connecting rod 74 is suitable for being embedded into the mounting groove, so as to realize the quick connection between the connecting rod 74 and the pushing block 73, one end of the connecting rod 74 opposite to the pushing block 73 is connected with the operating handle 75, the operating handle 75 is manually moved, the positions of the neutral gear, the reverse gear and the forward gear are switched.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to fall within the scope of the present disclosure.

Claims (10)

1. A reversing transmission device applied to a gearbox is characterized by comprising:

the driving assembly (2) comprises a driving shaft (21) and a tooth holder structure (22), and the driving shaft (21) is in transmission connection with the tooth holder structure (22);

the gear shifting assembly (3) comprises a reverse gear (31) and a reversing transmission part, the reverse gear (31) is sleeved on the driving shaft (21), and the reverse gear (31) is meshed and connected with the reversing transmission part;

the output assembly (4) comprises a forward gear (41), and the forward gear (41) is in meshed connection with the reversing transmission part;

the first synchronous ring (5), the said first synchronous ring (5) is set on the said driving axle (21);

the second synchronizing ring (6) and the first synchronizing ring (5) are oppositely arranged at two sides of the tooth holder structure (22), one ends of the first synchronizing ring (5) and the second synchronizing ring (6) facing the tooth holder structure (22) are respectively in rotating connection with the tooth holder structure (22), and one ends of the first synchronizing ring (5) and the second synchronizing ring (6) departing from the tooth holder structure (22) are respectively in sleeve connection with the reverse gear (31) and the forward gear (41);

the gear sleeve (1) is sleeved on the gear seat structure (22), and the gear sleeve (1) is suitable for being movably sleeved on the first synchronizing ring (5) and the gear seat structure (22) or movably sleeved on the gear seat structure (22) and the second synchronizing ring (6).

2. The reversing transmission device according to claim 1, characterized in that the toothholder structure (22) comprises a toothholder body (221), a second rotating member (222) and a third rotating member (223), the second rotating member (222) and the third rotating member (223) are respectively arranged at two ends of the toothholder body (221), the first synchronizing ring (5) comprises a first rotating member (51), the second synchronizing ring (6) comprises a fourth rotating member (61), the first rotating member (51) is matched and rotationally connected with the second rotating member (222), and the third rotating member (223) is matched and rotationally connected with the fourth rotating member (61);

the outer circumference and the inner circumference of the tooth holder body (221) are respectively provided with a tooth holder outer gear ring and a tooth holder inner gear ring, the driving shaft (21) is embedded into the tooth holder inner gear ring and is suitable for driving the tooth holder body (221) to rotate, and the tooth holder outer gear ring is sleeved with the tooth sleeve (1).

3. The reversing gear according to claim 2, characterized in that the first synchronizing ring (5) further comprises a first synchronizing external tooth (52) and a first synchronizing internal tooth (53), the first synchronizing internal tooth (53) is coaxially arranged on the inner wall of the first synchronizing external tooth (52), and one end of the first synchronizing external tooth (52) facing the output member (4) is connected with the first rotating member (51); the gear sleeve (1) is suitable for being movably sleeved on the first synchronous outer gear (52) and the gear seat outer gear ring and is suitable for driving the first synchronous ring (5) and the gear seat structure (22) to synchronously rotate;

the retrograde gear (31) comprises a first retrograde external tooth (311) and a second retrograde external tooth (312) which are coaxially arranged, and one end, facing the output assembly (4), of the first retrograde external tooth (311) is connected with the second retrograde external tooth (312); the first synchronous inner teeth (53) are sleeved on the second reverse outer teeth (312) and are suitable for driving the reverse gear (31) to rotate, and the first reverse outer teeth (311) are meshed with the reversing transmission part.

4. The reversing transmission device according to claim 2, characterized in that the reversing transmission part comprises an idler gear (33), an idler shaft (34), a transmission shaft (35) and a multiple gear (32), wherein the idler gear (33) is sleeved on the idler shaft (34) and is suitable for rotating relative to the idler shaft (34); the multiple gear (32) is sleeved on the transmission shaft (35) and is suitable for rotating relative to the transmission shaft (35);

the idler gear (33) set up in retrograde gear (31) with between multiplex gear (32), just idler gear (33) respectively with retrograde gear (31) with multiplex gear (32) meshing connection, multiplex gear (32) deviate from the one end of idler gear (33) with preceding gear (41) meshing connection.

5. The reversing transmission device according to claim 4, characterized in that the reversing transmission part further comprises two bearing members, the multiple gear (32) comprises a first gear (321) and a second gear (322), the first gear (321) is connected with the second gear (322), the first gear (321) and the second gear (322) are respectively sleeved on the transmission shaft (35) through the two bearing members, the first gear (321) and the second gear (322) are suitable for rotating relative to the transmission shaft (35), and the first gear (321) and the second gear (322) are respectively in meshed connection with the idle gear (33) and the forward gear (41).

6. The reversing gear according to claim 4, characterized in that the second synchronizing ring (6) further comprises a second outer synchronizing tooth (62) and a second inner synchronizing tooth (63), the second inner synchronizing tooth (63) is coaxially arranged on the inner wall of the second outer synchronizing tooth (62), and the end of the second outer synchronizing tooth (62) facing away from the output assembly (4) is connected with the fourth rotating member (61); the gear sleeve (1) is suitable for being movably sleeved on the second synchronous outer gear (62) and the gear seat outer gear ring and is suitable for driving the second synchronous ring (6) and the gear seat structure (22) to synchronously rotate;

the forward gear (41) comprises a first forward external tooth (411) and a second forward external tooth (412) which are coaxially arranged, and one end of the first forward external tooth (411) facing away from the driving shaft (21) is connected with the second forward external tooth (412); the synchronous internal tooth of second (63) cover is located on first preceding external tooth (411) and be suitable for the drive preceding gear (41) rotate, second preceding external tooth (412) with multiplex gear (32) meshing connection.

7. The reversing transmission device according to claim 1, characterized in that the output assembly (4) further comprises an output shaft (42), and the forward gear (41) is sleeved on the output shaft (42) and is adapted to drive the output shaft (42) to rotate synchronously.

8. The reversing gear according to any one of claims 1-7, characterized in that the tooth base structure (22) further comprises a plurality of positioning buffers (224), a plurality of mounting holes (2211) are formed in the outer circumference of the tooth base structure (22), and the plurality of positioning buffers (224) are respectively embedded in the plurality of mounting holes (2211); when the tooth sleeve (1) is sleeved on the tooth seat structure (22), the positioning buffer piece (224) is suitable for abutting against the inner wall of the tooth sleeve (1).

9. The reversing transmission device according to claim 8, characterized in that the positioning buffer piece (224) comprises a compression spring (2241), a pressing plate (2242) and a protrusion (2243), the inner wall of the gear sleeve (1) is provided with a plurality of positioning grooves (13) which are arranged in a circumferential direction, one end of the compression spring (2241) is embedded into the mounting hole (2211), the other end of the compression spring (2241) is connected with the pressing plate (2242), the protrusion (2243) is arranged on one end of the pressing plate (2242) deviating from the compression spring (2241), when the gear sleeve (1) is sleeved on the gear seat structure (22), the protrusion (2243) is suitable for being embedded into the positioning grooves (13).

10. The reversing gear according to claim 8, further comprising a fork assembly (7), wherein the fork assembly (7) is connected to a circumferential outer wall of the sleeve gear (1), and wherein the fork assembly (7) is adapted to drive the sleeve gear (1) to displace relative to the carrier structure (22).

Images