CN212564353U

CN212564353U - Stable type transmission gear shifting gas driving device

Info

Publication number: CN212564353U
Application number: CN202021204680.6U
Authority: CN
Inventors: 陈建华; 许盛辉; 林永忠; 陈添贵; 孙赣生
Original assignee: Xiamen Haifu Construction Machinery Co ltd
Current assignee: Xiamen Haifu Construction Machinery Co ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-19
Anticipated expiration: 2030-06-24

Abstract

The utility model relates to a stable form derailleur gas drive arrangement that shifts, including reduction gear casing and selector shaft, the right side of selector shaft is according to order fixed device has left stopper, right stopper and shifting piston, the extrusion is equipped with compression spring between left stopper, the right stopper; the left limiting block comprises a left annular plate, the right end of the left annular plate is integrally formed and is provided with a cylindrical spring mounting block rightwards, the right limiting block comprises a cylindrical limiting sleeve, the left end of the cylindrical limiting sleeve is integrally formed and is provided with a spring mounting convex edge leftwards, and the compression spring is arranged between the cylindrical spring mounting block and the spring mounting convex edge; the outside rigid coupling of retarder casing has sealed casing, the fixed plate of fixed joint between the left end of sealed casing and the right-hand member of retarder casing, but tubular stop collar movable mounting is in the guiding hole of fixed plate. The utility model discloses can effectively ensure the installation stability of return spring, spring housing and piston among the operation process of shifting.

Description

Stable type transmission gear shifting gas driving device

Technical Field

The utility model relates to a derailleur gas drive arrangement that shifts specifically indicates a stable form derailleur gas drive arrangement that shifts.

Background

Traditional heavy industry pneumatic gear shifting process for mechanical transmission can only realize two position control, does not have neutral position when shifting, and performance is lower, therefore current heavy industry pneumatic gear shifting device for mechanical transmission adopts three position type gas drive arrangement that shifts mostly. Like the utility model patent of patent number CN200920084191.9 discloses a three position type cylinder of shifting, current three position type gas drive arrangement of shifting need add spring holder and return spring on the gear shift shaft, realizes spacing to the meso position of gear shift shaft under return spring's effect, then sets up the air inlet in the both sides of piston. During shifting, piston drive is carried out to the carminative mode of opposite side that admits air of accessible one side to effectively drive the selector shaft and realize moving about and shift, when the atmospheric pressure of piston both sides is all not increased, then the selector shaft is located the meso position of shifting under return spring's effect, effectively realizes the tribit and replaces the operation of keeping off.

The position of the existing three-position type gear shifting gas driving device is limited mainly by a return spring, the return spring is limited and installed by a spring sleeve, and the spring sleeve is limited under the action of a piston. The spring sleeve and the piston which are used as limiting parts are in a movable state in the gear shifting process, so that the assembly stability of the return spring, the spring sleeve and the piston is difficult to effectively maintain. Especially when the piston moved to the right, the support of spring housing relied on in the cylinder body completely to the support of piston housing edge, and return spring this moment is the maximum compression state again, therefore the spring housing very easily produces excessive deformation to the insufficient problem of assembly stability of return spring, spring housing and piston has aggravated.

Consequently, design a section and can effectively ensure the installation stability of return spring, spring housing and the piston of the operation in-process of shifting to effectively ensure the stable form derailleur that the operation of shifting can stably go on and shift gas drive arrangement is the utility model discloses a research purpose.

Disclosure of Invention

To the problem that above-mentioned prior art exists, the utility model provides a stable form derailleur gas drive arrangement that shifts, this stable form derailleur shift gas drive arrangement can effectively solve the technical problem that above-mentioned prior art exists.

The technical scheme of the utility model is that:

a stable type speed changer gear shifting pneumatic driving device comprises a speed reducer shell and a gear shifting shaft movably arranged on the speed reducer shell,

the outer end of the speed reducer shell is provided with an accommodating cavity at a position corresponding to the gear shifting shaft, the right end of the gear shifting shaft extends to the outer side of the speed reducer shell, the right side of the gear shifting shaft is sequentially provided with a left limiting block, a right limiting block and a gear shifting piston in a fixed mode, and a compression spring is assembled between the left limiting block and the right limiting block in an extruding mode;

the left limiting block comprises a left side ring plate, the right end of the left side ring plate is integrally formed and is provided with a cylindrical spring mounting block rightwards, the right limiting block comprises a cylindrical limiting sleeve, the left end of the cylindrical limiting sleeve is integrally formed and is provided with a circle of limiting convex edge outwards, the left end of the cylindrical limiting sleeve is integrally formed and is provided with a spring mounting convex edge leftwards, and the compression spring is arranged between the cylindrical spring mounting block and the spring mounting convex edge in an extrusion state;

the gear shifting piston is fixedly connected to the right end part of the gear shifting shaft;

the left end of the sealing shell and the right end of the reducer shell are fixedly clamped with a fixing plate, a corresponding guide hole is formed in the middle of the fixing plate, and the cylindrical limiting sleeve is movably arranged in the guide hole of the fixing plate.

The left end of the gear shifting shaft is positioned in the speed reducer shell, and the left end of the gear shifting shaft is fixedly connected with a gear shifting fork.

The outer end of the reducer casing in the outer fringe department that holds the chamber is equipped with the corresponding constant head tank of round, seal housing's left end is equipped with the spacing groove, the fixed plate joint in between constant head tank and the spacing groove.

The right end of the gear shifting shaft is arranged in a step shape, and the gear shifting piston is sleeved on the right end of the gear shifting shaft and is locked through a corresponding locking nut.

The sealing shell is locked and installed outside the containing cavity of the speed reducer shell through corresponding locking screws.

The utility model has the advantages that:

1) the utility model discloses a tubular spring installation piece of left stopper sets up with the cooperation on the protruding edge of spring mounting of right stopper, effectively realizes the extrusion installation to compression spring with the mode of cup jointing, under the effect of tubular spring installation piece, effectively leads spacingly to compression spring's compression and reset process to prevent that compression spring from producing the offset scheduling problem with reset process in compression, effectively ensure the installation and the operating stability of the return spring of the operation in-process of shifting.

2) The utility model discloses a fixed clamping has the fixed plate between seal housing left end and retarder housing's the right-hand member, and the tube-shape stop collar is portable to be installed in the guiding hole of fixed plate. The setting through the fixed plate is effective to produce the direction spacing to the tube-shape stop collar, and the in-process of shifting, the tube-shape stop collar is effective all the time and is formed stably spacing between fixed plate and selector shaft, not only can effectively ensure the tube-shape stop collar, effectively ensures the installation stability of right stopper promptly, and can effectively promote the operating stability of selector shaft.

3) The utility model discloses a piston of shifting only needs carry out the atress under the condition that its bi-polar pressure changes and removes, and need not additionally to compression spring, left side stopper to and the right side stopper supports and provides, thereby can effectively ensure the stability of its self installation and operation.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic structural view of a reducer case.

Fig. 3 is a schematic structural diagram of the sealed housing.

Fig. 4 is a schematic structural diagram of the left stopper.

Fig. 5 is a schematic structural diagram of the right stopper.

Detailed Description

To facilitate understanding of those skilled in the art, the structure of the present invention will now be described in further detail with reference to the following examples:

referring to fig. 1-5, a shift gas driving device of a stable type transmission comprises a reducer casing 1 and a shift shaft 2 movably arranged on the reducer casing 1,

the outer end of the speed reducer shell 1 is provided with an accommodating cavity 3 at a position corresponding to the gear shifting shaft 2, the right end of the gear shifting shaft 2 extends to the outer side of the speed reducer shell 1, the right side of the gear shifting shaft 2 is sequentially provided with a left limiting block 4, a right limiting block 5 and a gear shifting piston 6 in a fixed mode, and a compression spring 7 is assembled between the left limiting block 4 and the right limiting block 5 in an extruding mode;

the left limiting block 4 comprises a left annular plate 401, a cylindrical spring mounting block 402 is arranged rightwards in an integrally formed mode at the right end of the left annular plate 401, the right limiting block 5 comprises a cylindrical limiting sleeve 501, a circle of limiting convex edge 502 is outwards arranged at the left end of the cylindrical limiting sleeve 501 in an integrally formed mode, a spring mounting convex edge 503 is leftwards arranged at the left end of the cylindrical limiting sleeve 501 in an integrally formed mode, and the compression spring 7 is arranged between the cylindrical spring mounting block 402 and the spring mounting convex edge 503 in an extrusion state;

a sealing shell 8 is fixedly connected to the outer side of the accommodating cavity 3 of the speed reducer shell 1, the left lower end and the right front end of the sealing shell 8 are respectively communicated with a corresponding air inlet 9, the right end of the gear shifting shaft 2 is located in the middle of the sealing shell 8, and the gear shifting piston 6 is fixedly connected to the right end of the gear shifting shaft 2;

a fixing plate 10 is fixedly clamped between the left end of the sealing shell 8 and the right end of the reducer shell 1, a corresponding guide hole is formed in the middle of the fixing plate 10, and the cylindrical limiting sleeve 501 is movably installed in the guide hole of the fixing plate 10.

The left end of the gear shifting shaft 2 is located in the speed reducer shell 1, and the left end of the gear shifting shaft 2 is fixedly connected with a gear shifting fork 11.

The outer end of reducer housing 1 in the outer fringe department that holds chamber 3 is equipped with the corresponding constant head tank 12 of round, seal housing 8's left end is equipped with spacing groove 13, fixed plate 10 joint in between constant head tank 12 and the spacing groove 13.

The right end part of the gear shifting shaft 2 is arranged in a step shape, and the gear shifting piston 6 is sleeved on the right end part of the gear shifting shaft 2 and is locked through a corresponding locking nut 14.

The seal housing 8 is mounted in a locked manner outside the receiving space 3 of the gear housing 1 by means of corresponding locking screws 15.

The utility model discloses a concrete process of shifting as follows:

1) the air inlet holes 9 at the left lower end and the right front end of the sealed shell 8 do not generate air inlet, the right end of the gear shifting shaft 2 is effectively positioned in the middle of the sealed shell 8 under the action of the compression spring 7, and the gear shifting shaft is in a neutral gear state at the moment;

2) the air inlet 9 at the left lower end of the sealed shell 8 is used for air inlet, the air inlet 9 at the right front end is used for air exhaust, and the left side of the gear shifting piston 6 is pressed to drive the gear shifting shaft 2 to move rightwards to perform high-speed gear shifting and gear shifting;

3) in the process of shifting the gear shift shaft to the right, the left limiting block 4 moves to the right along with the shifting shaft until the right end of the cylindrical spring mounting block 402 of the left limiting block 4 contacts the spring mounting convex edge 503;

4) the air inlet 9 at the right front end of the sealing shell 8 is used for air inlet, the air inlet 9 at the left lower end is used for air exhaust, and the right side of the gear shifting piston 6 is pressed to drive the gear shifting shaft 2 to move left to perform low-speed gear shifting;

5) during the leftward movement of the shift shaft, the right stopper 5 moves leftward until the spring mounting flange 503 of the right stopper 5 contacts the cylindrical spring mounting block 402.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a stable form derailleur gas drive arrangement that shifts, includes gear reducer housing (1) and but mobile device shift shaft (2) on gear reducer housing (1), its characterized in that:

an accommodating cavity (3) is formed in the outer end of the speed reducer shell (1) at a position corresponding to the gear shifting shaft (2), the right end of the gear shifting shaft (2) extends to the outer side of the speed reducer shell (1), a left limiting block (4), a right limiting block (5) and a gear shifting piston (6) are sequentially fixed on the right side of the gear shifting shaft (2), and a compression spring (7) is assembled between the left limiting block (4) and the right limiting block (5) in a squeezing mode;

the left limiting block (4) comprises a left side ring plate (401), a cylindrical spring mounting block (402) is arranged rightwards in an integrally formed mode at the right end of the left side ring plate (401), the right limiting block (5) comprises a cylindrical limiting sleeve (501), a circle of limiting convex edge (502) is outwards arranged at the left end of the cylindrical limiting sleeve (501) in an integrally formed mode, a spring mounting convex edge (503) is arranged leftwards in the integrally formed mode at the left end of the cylindrical limiting sleeve (501), and the compression spring (7) is arranged between the cylindrical spring mounting block (402) and the spring mounting convex edge (503) in an extrusion state;

a sealing shell (8) is fixedly connected to the outer side of the accommodating cavity (3) of the speed reducer shell (1), the left lower end and the right front end of the sealing shell (8) are respectively communicated with corresponding air inlets (9), the right end of the gear shifting shaft (2) is located in the middle of the sealing shell (8), and the gear shifting piston (6) is fixedly connected to the right end of the gear shifting shaft (2);

the sealing device is characterized in that a fixing plate (10) is fixedly clamped between the left end of the sealing shell (8) and the right end of the reducer shell (1), a corresponding guide hole is formed in the middle of the fixing plate (10), and the cylindrical limiting sleeve (501) is movably installed in the guide hole of the fixing plate (10).

2. A stabilized transmission shift gas drive according to claim 1, characterized in that: the left end of the gear shifting shaft (2) is positioned in the speed reducer shell (1), and the left end of the gear shifting shaft (2) is fixedly connected with a gear shifting fork (11).

3. A stabilized transmission shift gas drive according to claim 1, characterized in that: the outer end of reduction gear casing (1) in the outer fringe department that holds chamber (3) is equipped with corresponding constant head tank (12) of round, the left end of seal housing (8) is equipped with spacing groove (13), fixed plate (10) joint in between constant head tank (12) and spacing groove (13).

4. A stabilized transmission shift gas drive according to claim 1, characterized in that: the right end part of the gear shifting shaft (2) is arranged in a step shape, and the gear shifting piston (6) is sleeved on the right end part of the gear shifting shaft (2) and locked through a corresponding locking nut (14).

5. A stabilized transmission shift gas drive according to claim 1, characterized in that: the sealing shell (8) is locked and installed outside the containing cavity (3) of the speed reducer shell (1) through corresponding locking screws (15).