CN216895720U - Eight-gear transmission - Google Patents
Eight-gear transmission Download PDFInfo
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- CN216895720U CN216895720U CN202123446316.8U CN202123446316U CN216895720U CN 216895720 U CN216895720 U CN 216895720U CN 202123446316 U CN202123446316 U CN 202123446316U CN 216895720 U CN216895720 U CN 216895720U
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Abstract
The utility model relates to the field of transmissions, in particular to an eight-gear transmission which comprises a box body, wherein an auxiliary box shifting fork shaft, a main box first shifting fork shaft, a main box second shifting fork shaft and a main box third shifting fork shaft are connected to the box body in a sliding manner; and sliding pins are connected to the second shifting fork shaft of the main box and the third shifting fork shaft of the main box in a sliding manner. According to the scheme, the main box shifting fork shaft is in a locked state when the auxiliary box shifting fork shaft performs gear shifting operation; and meanwhile, when any one main box shifting fork shaft is in gear engagement, the auxiliary box shifting fork shaft and other main box shifting fork shafts are in a locked state.
Description
Technical Field
The utility model relates to the field of transmissions, in particular to an eight-gear transmission.
Background
With the fuel consumption control requirements of the national six standards, the gears of the gearbox applied to the light truck are more and more. For a multi-gear gearbox, a main box and an auxiliary box, such as a 4 x 2 structure of the main box and the auxiliary box, are arranged on the gearbox, so that eight-gear speed change of the gearbox is realized.
Be equipped with a plurality of main box declutch shift axles on the main box, all install the shift fork that is equipped with corresponding fender position on a plurality of main box declutch shift axles to through the slip to main box declutch shift axle, thereby drive corresponding shift fork and slide, corresponding synchronous ware assembly is stirred to the shift fork, and then has realized the operation of putting into gear. The auxiliary box is provided with an auxiliary box shifting fork shaft, the auxiliary box shifting fork shaft is also provided with a shifting fork with a corresponding gear, and the shifting fork slides the auxiliary box shifting fork shaft and shifts a corresponding synchronizer assembly, so that the corresponding shifting fork is driven to slide, and the gear shifting operation is further realized.
At present, when gears of a sub-box are changed, gears corresponding to a main box shifting fork shaft need to be in a neutral state, and if the gears corresponding to the main box shifting fork shaft are not in the neutral state, related parts in the sub-box are easily abraded greatly when the gears of the sub-box are changed, so that the service life of a transmission is shortened. In addition, when the main box shifting fork shaft is in gear engagement, other main box shifting fork shafts are likely to move, and the other main box shifting fork shafts can engage the gear, so that the phenomenon of mistaken engagement of the gear occurs, and the gear engagement is not facilitated correctly.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an eight-gear transmission, which is used for realizing that a main box shifting fork shaft is in a locked state when a sub box shifting fork shaft is subjected to gear shifting operation; in addition, when any one main box declutch shift shaft is shifted, the sub-box declutch shift shaft and the other main box declutch shift shafts are also in a locked state.
In order to achieve the purpose, the utility model adopts the following technical scheme: an eight-gear transmission comprises a box body, wherein the box body comprises a main box and an auxiliary box, an auxiliary box shifting fork shaft, a main box first shifting fork shaft, a main box second shifting fork shaft and a main box third shifting fork shaft are connected onto the box body in a sliding mode, and the main box first shifting fork shaft, the main box second shifting fork shaft, the main box third shifting fork shaft and the auxiliary box shifting fork shaft are sequentially arranged side by side; grooves are formed in two opposite side surfaces of a first main box shifting fork shaft, two opposite side surfaces of a second main box shifting fork shaft, two opposite side surfaces of a third main box shifting fork shaft and a side surface of an auxiliary box shifting fork shaft, and one groove in the first main box shifting fork shaft and one groove in the second main box shifting fork shaft are arranged oppositely; the other groove on the second shifting fork shaft of the main box and a groove on the third shifting fork shaft of the main box are oppositely arranged; the other groove on the third shifting fork shaft of the main box is opposite to the groove on the shifting fork shaft of the auxiliary box; interlocking pins are arranged between two opposite grooves of a first main box shifting fork shaft and a second main box shifting fork shaft, between two opposite grooves of the second main box shifting fork shaft and a third main box shifting fork shaft and between two opposite grooves of the third main box shifting fork shaft and an auxiliary box shifting fork shaft, and can be clamped in the corresponding grooves at the two ends of the interlocking pins, and the interlocking pins are connected to the box body in a sliding manner; the pin holes are formed in the second main box shifting fork shaft and the third main box shifting fork shaft, the two grooves in the second main box shifting fork shaft are communicated through the pin holes in the second main box shifting fork shaft, the two grooves in the third main box shifting fork shaft are communicated through the pin holes in the third main box shifting fork shaft, and sliding pins are connected in the pin holes in a sliding manner; the box body is connected with a top pin in a sliding mode, the top pin is located on one side, away from the second shifting fork shaft of the main box, of the first shifting fork shaft of the main box, the top pin can be clamped in a groove, away from the second shifting fork shaft of the main box, of the first shifting fork shaft of the main box, and a first elastic pressing piece is connected to one side, away from the first shifting fork shaft of the main box, of the top pin.
The principle and the advantages of the scheme are as follows: when the first shifting fork shaft of the main box moves to engage with the gear, the first shifting fork shaft of the main box moves to push the top pin out of the groove, the top pin extrudes the first elastic pressing piece, the first shifting fork shaft of the main box simultaneously pushes the interlocking pin out of the groove, the interlocking pin enters the groove of the second shifting fork shaft of the main box under the extrusion of the outer side wall of the first shifting fork shaft of the main box so as to lock the second shifting fork shaft of the main box, the interlocking pin between the first shifting fork shaft of the main box and the second shifting fork shaft of the main box is abutted against the sliding pin on the second shifting fork shaft of the main box, the sliding pin pushes the interlocking pin between the second shifting fork shaft of the main box and the third shifting fork shaft of the main box, the interlocking pin between the second shifting fork shaft of the main box and the third shifting fork shaft of the main box moves towards the third shifting fork shaft of the main box, the second shifting fork shaft of the main box and the third shifting fork shaft of the main box are clamped in the groove on the third shifting fork shaft of the main box, therefore, the third shifting fork shaft of the main box is locked. The interlocking pin between the second main box shifting fork shaft and the third main box shifting fork shaft is abutted against the sliding pin on the third main box shifting fork shaft, the sliding pin pushes the interlocking pin between the third main box shifting fork shaft and the auxiliary box shifting fork shaft to move towards the direction close to the auxiliary box shifting fork shaft, and the interlocking pin between the third main box shifting fork shaft and the auxiliary box shifting fork shaft moves into the groove on the auxiliary box shifting fork shaft, so that the auxiliary box shifting fork shaft is locked. Therefore, when the first shifting fork shaft of the main box moves to engage with the gear, the second shifting fork shaft of the main box, the third shifting fork shaft of the main box and the shifting fork shaft of the auxiliary box are all in a locked state, and the operation of mistakenly engaging with the gear is avoided.
Similarly, when the second main box shifting fork shaft moves to engage with the gear, the first main box shifting fork shaft and the third main box shifting fork shaft are both in a neutral gear state, and the ejector pin is clamped in the groove in the first main box shifting fork shaft. The main box second declutch shift shaft moves to make interlocking pins on two sides of the main box second declutch shift shaft abut against the outer side wall of the main box second declutch shift shaft, and the interlocking pins between the main box second declutch shift shaft and the main box first declutch shift shaft are clamped in the grooves of the main box first declutch shift shaft under the abutting action of the outer wall of the main box second declutch shift shaft, so that the main box first declutch shift shaft is locked at the moment. And the interlocking pin between the second shifting fork shaft of the main box and the third shifting fork shaft of the main box is clamped in the groove of the third shifting fork shaft of the main box under the support of the outer wall of the second shifting fork shaft of the main box, so that the third shifting fork shaft of the main box is locked. Meanwhile, an interlocking pin between the second main box shifting fork shaft and the third main box shifting fork shaft is abutted against a sliding pin on the third main box shifting fork shaft, the sliding pin pushes the interlocking pin between the third main box shifting fork shaft and the auxiliary box shifting fork shaft to move towards the direction close to the auxiliary box shifting fork shaft, and the interlocking pin between the third main box shifting fork shaft and the auxiliary box shifting fork shaft moves into a groove on the auxiliary box shifting fork shaft, so that the auxiliary box shifting fork shaft is locked. Therefore, when the second shifting fork shaft of the main box moves to engage with the gear, the first shifting fork shaft of the main box, the third shifting fork shaft of the main box and the shifting fork shaft of the auxiliary box are all in a locked state, and the operation of mistakenly engaging with the gear is avoided.
Similarly, when the third shifting fork shaft of the main box moves to engage with the gear, the first shifting fork shaft of the main box and the second shifting fork shaft of the main box are both in a neutral gear state at the moment, and the ejector pin is clamped in the groove on the first shifting fork shaft of the main box, so that the first shifting fork shaft of the main box is locked. The third shifting fork shaft of the main box moves to enable the interlocking pins at two sides of the third shifting fork shaft of the main box to be abutted against the outer side wall of the third shifting fork shaft of the main box, and the interlocking pins between the third shifting fork shaft of the main box and the second shifting fork shaft of the main box are clamped in the groove of the second shifting fork shaft of the main box under the action of the abutment of the outer wall of the third shifting fork shaft of the main box, so that the second shifting fork shaft of the main box is locked. And the interlocking pin between the third shifting fork shaft of the main box and the shifting fork shaft of the auxiliary box is clamped in the groove of the shifting fork shaft of the auxiliary box under the support of the outer wall of the third shifting fork shaft of the main box, so that the shifting fork shaft of the auxiliary box is locked. Therefore, when the third shifting fork shaft of the main box moves to engage with the gear, the first shifting fork shaft of the main box, the second shifting fork shaft of the main box and the shifting fork shaft of the auxiliary box are all in a locked state, and the operation of mistakenly engaging with the gear is avoided.
In a similar way, when the auxiliary box shifting fork shaft moves and shifts gears, the first main box shifting fork shaft, the second main box shifting fork shaft and the third main box shifting fork shaft are all in a neutral state, and the ejector pin is clamped in the groove in the first main box shifting fork shaft, so that the first main box shifting fork shaft is locked. The auxiliary box shifting fork shaft moves to enable the outer side interlocking pin to abut against the outer side wall of the auxiliary box shifting fork shaft, and the interlocking pin between the main box third shifting fork shaft and the auxiliary box shifting fork shaft is clamped in a groove of the main box third shifting fork shaft under the abutting effect of the outer wall of the auxiliary box shifting fork shaft, so that the main box third shifting fork shaft is locked. And the interlocking pin between the third shifting fork shaft of the main box and the third shifting fork shaft of the auxiliary box is propped against the sliding pin on the third shifting fork shaft of the main box under the propping of the outer wall of the shifting fork shaft of the auxiliary box, the sliding pin pushes the interlocking pin between the second shifting fork shaft of the main box and the third shifting fork shaft of the main box, and the interlocking pin between the second shifting fork shaft of the main box and the third shifting fork shaft of the main box is clamped in the groove on the second shifting fork shaft of the main box, so that the second shifting fork shaft of the main box is locked. From this, sub-tank declutch shift shaft is when removing the gear shift, and main tank first declutch shift shaft, main tank second declutch shift shaft and main tank third declutch shift shaft all are in the lock and die the state at neutral gear, are favorable to the sub-tank to carry out the operation of shifting.
To sum up, through this scheme, adopt interlocking structure to carry out the interlocking to corresponding declutch shift shaft, guaranteed when putting into gear to main case declutch shift shaft, other main case declutch shift shaft and auxiliary tank declutch shift shaft all are in the automatic locking state, have avoided keeping off the position mistake and have hung. Meanwhile, when the auxiliary box is shifted, if the shifting fork shaft of any main box is not in the neutral position, the phenomenon that the interlocking pin cannot move into the corresponding groove can occur, so that the interlocking pin at the groove of the shifting fork shaft of the auxiliary box cannot be pushed out from the groove of the shifting fork shaft of the auxiliary box, the shifting fork shaft of the auxiliary box cannot move to shift, and therefore, the shifting fork shaft of the auxiliary box can be shifted only when the main box is in the neutral position, and the transmission is protected.
Preferably, as an improvement, the side of the first main box shifting fork shaft, the side of the second main box shifting fork shaft, the side of the third main box shifting fork shaft and the side of the auxiliary box shifting fork shaft are all provided with clamping grooves, the box body is provided with four clamping pins which are respectively clamped in the four clamping grooves, and the box body is provided with a second elastic pressing piece for pressing the clamping pins. Therefore, the clamping pin can be clamped in the corresponding clamping groove under the pressure action of the second elastic pressing piece, so that the first main box shifting fork shaft, the second main box shifting fork shaft, the third main box shifting fork shaft and the auxiliary box shifting fork shaft are limited, the first main box shifting fork shaft, the second main box shifting fork shaft, the third main box shifting fork shaft and the auxiliary box shifting fork shaft are prevented from violently shaking in the driving process and automatically moving, and the first main box shifting fork shaft, the second main box shifting fork shaft, the third main box shifting fork shaft and the auxiliary box shifting fork shaft can be in a stable state when not subjected to gear shifting control.
Preferably, as a modification, the interlocking pin and the slide pin are both elongated, and the length of the interlocking pin is greater than that of the slide pin.
Preferably, as a modification, the end portions of the interlocking pins are smoothly arranged. Therefore, the end part of the interlocking pin cannot be clamped with the side surface of the groove, and the interlocking pin can be conveniently pushed out of the groove.
Preferably, as a modification, the inner side surface of the groove is obliquely arranged. Therefore, the end part of the interlocking pin cannot be clamped with the side surface of the groove, and the corresponding shifting fork shaft can be guaranteed to be smoothly pushed out of the groove when moving.
Preferably, as an improvement, the box body is made of aluminum alloy. Thus, the weight of the transmission is light.
Preferably, as an improvement, the gears in the box body are all helical gears. Therefore, by adopting the helical gear, the gear in the transmission is meshed smoothly, and the noise is small.
Drawings
FIG. 1 is a cross-sectional view of a first main case fork shaft, a second main case fork shaft, a third main case fork shaft, and a second sub case fork shaft of an eight speed transmission.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the box comprises a main box second shifting fork shaft 21, a main box first shifting fork shaft 33, a main box third shifting fork shaft 36, an interlocking pin 37, an auxiliary box shifting fork shaft 38, a second elastic pressing piece 39, a clamping pin 40, a top pin 41, a sliding pin 42, a groove 43, a clamping groove 44 and a box body 45.
Example 1
Substantially as shown in figure 1: an eight keeps off derailleur, includes box 45, and box 45 is the aluminum alloy material. The gears in the box 45 are all helical gears. The box body 45 comprises a main box and an auxiliary box, the box body 45 is connected with an auxiliary box shifting fork shaft 38, a main box first shifting fork shaft 33, a main box second shifting fork shaft 21 and a main box third shifting fork shaft 36 in a sliding mode, and the main box first shifting fork shaft 33, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 are arranged side by side in sequence. Through carrying out axial displacement to main box first fork axle 33, main box second fork axle 21 and main box third fork axle 36 respectively, main box first fork axle 33, main box second fork axle 21 and main box third fork axle 36 drive corresponding shift fork respectively and remove, and the corresponding synchronous ware assembly is stirred to the shift fork, and then has realized the main box and has put into gear the operation. By moving the sub-tank shift rail 38 axially, the sub-tank shift rail 38 drives the corresponding shift fork to move, and the corresponding synchronizer assembly is shifted by the shift fork, thereby realizing the sub-tank shift operation. The related structures of the main box first shifting fork shaft 33, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 which move axially to perform gear engaging or gear shifting operation, such as the structures of a gear shifting rocker arm, a gear selecting shaft, a gear shifting shaft, a synchronizer and gears of each gear, belong to the prior art, and are not described herein again.
The specific implementation process is as follows: when the main-box first fork shaft 33 moves into gear, the main-box second fork shaft 21 and the main-box third fork shaft 36 are both in a neutral state. The main box first fork shaft 33 moves to push the top pin 41 out of the groove 43, the top pin 41 presses the first elastic pressing member leftwards against the elastic force of the first elastic pressing member, at the same time, the main box first fork shaft 33 pushes the right interlocking pin 37 out of the groove 43, the left end of the interlocking pin 37 on the right side of the main box first fork shaft 33 abuts against the outer wall of the main box first fork shaft 33 and is no longer located in the groove 43 on the right side of the main box first fork shaft 33, the interlocking pin 37 on the right side of the main box first fork shaft 33 slides rightwards under the extrusion of the outer wall of the main box first fork shaft 33 and enters the groove 43 on the left side of the main box second fork shaft 21, thereby locking the main box second fork shaft 21, at the same time, the right end of the interlocking pin 37 located between the main box first fork shaft 33 and the main box second fork shaft 21 abuts against the left end of the sliding pin 42 on the main box second fork shaft 21 to push the sliding pin 42 rightwards, the slide pin 42 moves rightward to push the interlocking pin 37 between the main box second fork shaft 21 and the main box third fork shaft 36, the interlocking pin 37 between the main box second fork shaft 21 and the main box third fork shaft 36 moves rightward, and the interlocking pin 37 between the main box second fork shaft 21 and the main box third fork shaft 36 is caught in the groove 43 on the left side surface of the main box third fork shaft 36, thereby achieving the locking of the main box third fork shaft 36. At this time, the right end of the interlocking pin 37 between the main box second fork shaft 21 and the main box third fork shaft 36 abuts against the left end of the sliding pin 42 on the main box third fork shaft 36, the sliding pin 42 on the main box third fork shaft 36 pushes the interlocking pin 37 between the main box third fork shaft 36 and the sub-box fork shaft 38 to move rightward, and the interlocking pin 37 between the main box third fork shaft 36 and the sub-box fork shaft 38 moves into the groove 43 on the sub-box fork shaft 38, so that the sub-box fork shaft 38 is locked. Therefore, when the main box first shifting fork shaft 33 moves to be in gear, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 are all in a locked state, so that the operation of mistakenly engaging the gear is avoided.
Similarly, when the second main declutch shift shaft 21 is shifted to engage with a gear, the first main declutch shift shaft 33 and the third main declutch shift shaft 36 are both in a neutral state, and the knock pin 41 is engaged in the left groove 43 on the first main declutch shift shaft 33, so as to lock the first main declutch shift shaft 33. The second main declutch shift shaft 21 moves to make the interlocking pins 37 at two sides move out of the grooves 43 at two sides of the second main declutch shift shaft 21, the interlocking pins 37 at two sides of the second main declutch shift shaft 21 abut against the outer side wall of the second main declutch shift shaft 21 and are no longer located in the grooves 43 on the second main declutch shift shaft 21, the interlocking pins 37 between the second main declutch shift shaft 21 and the first main declutch shift shaft 33 are clamped in the grooves 43 of the first main declutch shift shaft 33 under the abutting action of the outer wall of the second main declutch shift shaft 21, and at this time, the first main declutch shift shaft 33 is locked. And the interlocking pin 37 between the main box second fork shaft 21 and the main box third fork shaft 36 moves rightwards under the abutment of the outer wall of the main box second fork shaft 21 and is clamped in the groove 43 on the left side of the main box third fork shaft 36, so that the main box third fork shaft 36 is locked. Meanwhile, the right end of the interlocking pin 37 between the second main declutch shift shaft 21 and the third main declutch shift shaft 36 abuts against the left end of the sliding pin 42 on the third main declutch shift shaft 36, the sliding pin 42 pushes the interlocking pin 37 between the third main declutch shift shaft 36 and the auxiliary declutch shift shaft 38 to move rightwards, and the interlocking pin 37 between the third main declutch shift shaft 36 and the auxiliary declutch shift shaft 38 moves into the groove 43 on the auxiliary declutch shift shaft 38, so that the locking of the auxiliary declutch shift shaft 38 is realized. Therefore, when the main box second fork shaft 21 moves to engage the gear, the main box first fork shaft 33, the main box third fork shaft 36 and the sub-box fork shaft 38 are all in a locked state, so that the operation of mistakenly engaging the gear is avoided.
Similarly, when the third main declutch shift shaft 36 moves to engage with the gear, the first main declutch shift shaft 33 and the second main declutch shift shaft 21 are both in a neutral state, and the knock pin 41 is clamped in the left groove 43 on the first main declutch shift shaft 33, so that the first main declutch shift shaft 33 is locked. The main housing third fork shaft 36 is moved so that the interlocking pins 37 on both sides thereof abut against the outer side wall of the main housing third fork shaft 36, and the interlocking pins 37 on both sides of the main housing third fork shaft 36 are no longer located in the grooves 43 on both sides of the main housing third fork shaft 36. The interlocking pin 37 between the third main declutch shift shaft 36 and the second main declutch shift shaft 21 is moved leftwards and locked in the groove 43 on the right side of the second main declutch shift shaft 21 under the action of the outer wall of the third main declutch shift shaft 36, and at this time, the second main declutch shift shaft 21 is locked. And the interlocking pin 37 between the main box third fork shaft 36 and the sub-box fork shaft 38 moves rightward under the abutment of the outer wall of the main box third fork shaft 36 to be caught in the groove 43 of the sub-box fork shaft 38, thereby locking the sub-box fork shaft 38. Therefore, when the third main-box fork shaft 36 is shifted to engage with the gear, the first main-box fork shaft 33, the second main-box fork shaft 21 and the sub-box fork shaft 38 are all in a locked state, so that the operation of mistakenly engaging with the gear is avoided.
Similarly, when the sub-box shifting fork shaft 38 moves to shift gears, the first main box shifting fork shaft 33, the second main box shifting fork shaft 21 and the third main box shifting fork shaft 36 are all in a neutral state, and the ejector pin 41 is clamped in the left groove 43 on the first main box shifting fork shaft 33, so that the first main box shifting fork shaft 33 is locked. The interlocking pin 37 on the left side of the auxiliary box declutch shift shaft 38 is abutted against the outer side wall of the auxiliary box declutch shift shaft 38 when the auxiliary box declutch shift shaft 38 moves, the interlocking pin 37 on the left side of the auxiliary box declutch shift shaft 38 is no longer located in the groove 43, the interlocking pin 37 between the main box third declutch shift shaft 36 and the auxiliary box declutch shift shaft 38 is clamped in the groove 43 on the right side of the main box third declutch shift shaft 36 under the action of the abutment of the outer wall of the auxiliary box declutch shift shaft 38, and at this time, the main box third declutch shift shaft 36 is locked. And the interlocking pin 37 between the main box third declutch shift shaft 36 and the auxiliary box declutch shift shaft 38 abuts against the right end of the sliding pin 42 on the main box third declutch shift shaft 36 under the abutment of the outer wall of the auxiliary box declutch shift shaft 38, the left end of the sliding pin 42 pushes the interlocking pin 37 between the main box second declutch shift shaft 21 and the main box third declutch shift shaft 36, and the interlocking pin 37 between the main box second declutch shift shaft 21 and the main box third declutch shift shaft 36 moves leftwards and is clamped in the groove 43 on the right side of the main box second declutch shift shaft 21, thereby locking the main box second declutch shift shaft 21. Therefore, when the sub-box shifting fork shaft 38 shifts, the main-box first shifting fork shaft 33, the main-box second shifting fork shaft 21 and the main-box third shifting fork shaft 36 are all locked in the neutral gear state, which is beneficial to the shift operation of the sub-box.
When the sub-box fork shaft 38 moves to shift gears, if the main-box third fork shaft 36 is not in a neutral state, the interlocking pin 37 on the left side of the sub-box fork shaft 38 cannot enter the groove 43 on the right side of the main-box third fork shaft 36, at this time, the interlocking pin 37 on the left side of the sub-box fork shaft 38 is still clamped in the groove 43 of the sub-box fork shaft 38, and the sub-box fork shaft 38 cannot move axially to shift gears.
When the sub-box shifting fork shaft 38 moves to shift gears, if the main box second shifting fork shaft 21 is not in a neutral state, the left end of the interlocking pin 37 between the main box second shifting fork shaft 21 and the main box third shifting fork shaft 36 still abuts against the outer side wall on the right side of the main box second shifting fork shaft 21, the interlocking pin 37 between the main box second shifting fork shaft 21 and the main box third shifting fork shaft 36 cannot move leftwards and enter the groove 43 of the main box second shifting fork shaft 21, and because the interlocking pin 37 between the main box second shifting fork shaft 21 and the main box third shifting fork shaft 36 cannot move leftwards, the sliding pin 42 on the main box third shifting fork shaft 36 and the interlocking pin 37 on the right side of the main box third shifting fork shaft 36 cannot move leftwards, and at the moment, the interlocking pin 37 on the left side of the sub-box shifting fork shaft 38 still is clamped in the groove 43 of the sub-box shifting fork shaft 38, and the sub-box shifting fork shaft 38 cannot move axially to shift gears.
When the sub-box shift fork 38 is shifted, if the main box first shift fork 33 is not in a neutral position, the left end of the interlocking pin 37 between the main box first shift fork 33 and the main box second shift fork 21 still abuts against the outer side wall of the right side of the main box first shift fork 33, the interlocking pin 37 between the main box first shift fork 33 and the main box second shift fork 21 cannot move leftward into the groove 43 of the main box first shift fork 33, because the interlocking pin 37 between the main box first shift fork 33 and the main box second shift fork 21 cannot move leftward, the interlocking pin 42 on the main box second shift fork 21 cannot move leftward, the interlocking pin 37 between the main box second shift fork 21 and the main box third shift fork 36 cannot move leftward, the sliding pin 42 on the main box third shift fork 36 and the interlocking pin 37 on the right side of the main box third shift fork 36 cannot move leftward, and the interlocking pin 42 on the main box third shift fork 36 and the groove 43 of the sub-box first shift fork 38 are still caught in the groove 43 of the sub-box first shift fork 38 on the left side, the sub-box shift rail 38 cannot move axially to shift gears.
Example 2
In this embodiment, the upper side surface of the first main box declutch shift shaft 33, the upper side surface of the second main box declutch shift shaft 21, the upper side surface of the third main box declutch shift shaft 36, and the upper side surface of the auxiliary box declutch shift shaft 38 are all provided with a clamping groove 44, the box body 45 is provided with four clamping pins 40, the bottom ends of the four clamping pins 40 are respectively clamped in the four clamping grooves 44, the box body 45 is provided with a second elastic pressing member 39 for pressing the clamping pins 40, the second elastic pressing member 39 is a pressure spring, and the pressure spring is pressed on the clamping pins 40.
Therefore, the bayonet 40 can be clamped in the corresponding clamping groove 44 under the pressure action of the second elastic pressing piece 39, so that the corresponding main box first shifting fork shaft 33, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 are limited, the main box first shifting fork shaft 33, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 are prevented from violently shaking and automatically moving in the driving process, and the main box first shifting fork shaft 33, the main box second shifting fork shaft 21, the main box third shifting fork shaft 36 and the auxiliary box shifting fork shaft 38 can be in a stable state when not subjected to gear shifting operation control.
The foregoing is merely an example of the present invention and common general knowledge in the art of designing and/or characterizing particular aspects and/or features is not described in any greater detail herein. It should be noted that, for those skilled in the art, without departing from the technical solution of the present invention, several variations and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. The utility model provides an eight keep off derailleur, includes the box, the box includes main tank and auxiliary tank, and sliding connection has auxiliary tank declutch shift shaft, the first declutch shift shaft of main tank, main tank second declutch shift shaft and main tank third declutch shift shaft, its characterized in that on the box: the main box first shifting fork shaft, the main box second shifting fork shaft, the main box third shifting fork shaft and the auxiliary box shifting fork shaft are arranged in parallel in sequence; grooves are formed in two opposite side surfaces of the first main box shifting fork shaft, two opposite side surfaces of the second main box shifting fork shaft, two opposite side surfaces of the third main box shifting fork shaft and side surfaces of the auxiliary box shifting fork shafts, and one groove in the first main box shifting fork shaft and one groove in the second main box shifting fork shaft are arranged oppositely; the other groove on the second shifting fork shaft of the main box is opposite to the groove on the third shifting fork shaft of the main box; the other groove on the third shifting fork shaft of the main box and the groove on the shifting fork shaft of the auxiliary box are oppositely arranged; interlocking pins are arranged between two opposite grooves of the first main box shifting fork shaft and the second main box shifting fork shaft, between two opposite grooves of the second main box shifting fork shaft and the third main box shifting fork shaft and between two opposite grooves of the third main box shifting fork shaft and the auxiliary box shifting fork shaft, and can be clamped in the corresponding grooves at two ends of the interlocking pins, and the interlocking pins are connected to the box body in a sliding manner; pin holes are formed in the second main box shifting fork shaft and the third main box shifting fork shaft, two grooves in the second main box shifting fork shaft are communicated through the pin holes in the second main box shifting fork shaft, two grooves in the third main box shifting fork shaft are communicated through the pin holes in the third main box shifting fork shaft, and sliding pins are connected in the pin holes in a sliding mode; the box body is connected with a top pin in a sliding mode, the top pin is located on one side, away from the second shifting fork shaft of the main box, of the first shifting fork shaft of the main box, the top pin can be clamped in a groove, away from the second shifting fork shaft of the main box, of the first shifting fork shaft of the main box, and a first elastic pressing piece is connected to one side, away from the first shifting fork shaft of the main box, of the top pin.
2. The eight speed transmission of claim 1, wherein: the side face of the first shifting fork shaft of the main box, the side face of the second shifting fork shaft of the main box, the side face of the third shifting fork shaft of the main box and the side face of the shifting fork shaft of the auxiliary box are respectively provided with a clamping groove, the box body is provided with four clamping pins, the four clamping pins are respectively clamped in the four clamping grooves, and the box body is provided with a second elastic pressing piece for pressing the clamping pins.
3. The eight speed transmission of claim 1, wherein: the interlocking pin and the sliding pin are both strip-shaped, and the length of the interlocking pin is greater than that of the sliding pin.
4. The eight speed transmission of claim 1, wherein: the end parts of the interlocking pins are smoothly arranged.
5. The eight speed transmission of claim 1, wherein: the inner side surface of the groove is obliquely arranged.
6. The eight speed transmission of claim 1, wherein: the box body is made of aluminum alloy.
7. The eight speed transmission of claim 1, wherein: and the gears in the box body are all helical gears.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446316.8U CN216895720U (en) | 2021-12-30 | 2021-12-30 | Eight-gear transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123446316.8U CN216895720U (en) | 2021-12-30 | 2021-12-30 | Eight-gear transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895720U true CN216895720U (en) | 2022-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123446316.8U Active CN216895720U (en) | 2021-12-30 | 2021-12-30 | Eight-gear transmission |
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| Country | Link |
|---|---|
| CN (1) | CN216895720U (en) |
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2021
- 2021-12-30 CN CN202123446316.8U patent/CN216895720U/en active Active
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