CN2175137Y - Arrangement of change-speed gearing device mounting on rear part of automobile - Google Patents

Abstract

The utility model relates to a novel postposition type force taking device which is matched with a special automobile speed changer. The utility model of which the hollow shaft can be directly connected with a lengthening intermediate shaft of a speed changer is arranged on the back part of the automobile speed changer. An operating mechanism which is in bidirectional gas operation is provided with an output mechanism for a timing gear. Therefore, the utility model has the advantages of safe work, reliable use, high bearing capacity and complete function. Because postposition is especially favorable for the whole arrangement of a special automobile, the working requirements of various automobiles can be met.

Description

Arrangement of change-speed gearing device mounting on rear part of automobile

The rear-mounted power takeoff of a kind of Automotive transmission belongs to the rearmounted power takeoff of handling for the supporting two-way gas of Automotive transmission of mechanical type.

At present, the power takeoff device in the Automotive transmission adopts the side form more, handles to be generally unidirectional gas handle structure.Because the restriction of speciality car chassis member spacing, side power takeoff cause its engine installation (as Hydraulic Pump, water pump etc.) to arrange inconvenience, on one side and unidirectional gas control type cylinder be spring, it is stuck that spring easily takes place, faults such as fracture.

The purpose of this utility model is to design a kind of simple in structurely, and load-carrying capacity is big, and is safe and reliable, can satisfy the novel rearmounted power takeoff that multiple speciality car uses.

Solution of the present utility model is that the female splines with its hollow shaft (31) links to each other with the male splines of the elongated portion of transmission countershaft (42).With gland (13), hollow shaft (31), needle bearing (40), input gear (41), bearing spacer (33), bearing ring washer (9), cylindrical roller bearing (10) combine as a whole the axle head of tween drive shaft (42) by bolt of serration (12).The outer radius that has the clutch tooth cover (35) that female splines and hollow shaft (31) and input gear (41) male splines link is joining shift fork (2).The upper end of cylinder block (5) is protected plug (4) and is located screw and be connected to atmosphere gas about 4bar, and the plug (43) that protects on the cylinder head (7) is located the high pressure gas that screw is connected to 7-8bar.Along with the connection of high pressure gas with close and to promote piston fork shaft (37) and in cylinder block (5) and housing (1), horizontally slip, the shift fork (2) that is solidified as a whole with piston fork shaft (37) also horizontally slips thereupon and handles the relative position of clutch tooth cover (35) and hollow shaft (31), when takeoff output, be that clutch tooth cover (35) combines as a whole with hollow shaft (31), promptly drive input gear (41) and rotate, by with input gear (41) ingear output gear shaft (22) and the flange (18) that combines as a whole with it takeoff output.Be fixed with timing driving gear (28) on the output gear shaft (22) by its revolution being exported, just write down work-hours of the present utility model with this with its 90 ° of intersecting axle ingear timing output gears (27).

Below in conjunction with accompanying drawing the utility model is further described.

Accompanying drawing is principal section figure of the present utility model, wherein:

Housing (1), shift fork (2), little O type circle (3), protect plug (4), cylinder block (5), big O type circle (6), cylinder head (7), bolt (8), bearing ring washer (9), short garden post coro bearng (10), anti-rotating pin (11), bolt of serration (12), gland (13), bearing cap shim (14), bolt (15), bearing for output shaft rear (16), outside framework oil seal (17), flange (18), spring pin (19), king bolt (20), pressing plate (21), output gear shaft (22), rear bearing cover (23), bearing cap shim (24), tie bolt (25), side cover (26), timing output gear (27), timing driving gear (28), pin (29), front bearing, output shaft (30), hollow shaft (31), bolt of rear end plate (32), bearing spacer (33), oil sealing (34), clutch tooth cover (35), flathead screw (36), piston fork shaft (37), plate washer (38), indicator light switch (39), needle bearing (40), input gear (41), transmission countershaft (42), protect plug (43), A is the atmosphere gas inlet, and B is a pressurized gas inlet.

Use the utility model, as long as the tween drive shaft of Automotive transmission (42) lengthening is stretched out housing, its elongated portion rolling cut invoice serration of going out, match with the interior invoice serration of hollow shaft (31) in shaft end central hole location tap out hole, head screwed hole cooperates with bolt of serration (12) and gets final product.The utility model is connected with case of transmission, is the symmetrical screw that utilizes the dress tween drive shaft rear bearing cover on 4 or several bolt of rear end plates (32) and the case of transmission, and change-speed box and the utility model are linked together.

In vehicle traveling process, when power takeoff was not worked, its state as shown in the figure.Cylinder block this moment (5) is in left chamber, is connected to normal pressure about 4bar by the screw that protects plug (4) is housed, (protect plug (4) and remove when the entrucking, it protects screw in acting on and only being to transport) this normal pressure has guaranteed that power takeoff is in Neutral Position all the time.Can find out by accompanying drawing, when change-speed box is worked, its tween drive shaft also is in running, when the male splines of tween drive shaft elongated portion is passed to hollow shaft to moment of torsion and rotating speed, hollow shaft turns round thereupon, but because clutch tooth cover (35) female splines only and the matching in conjunction with tooth of input gear (41), so power can't be exported.Have only several part in addition runnings such as hollow shaft (31), gland (13), anti-rotating pin (11), short garden post coro bearng (10), bearing ring washer (9), needle bearing (40) this moment in the whole power takeoff, all the other remain static, thereby loss in efficiency is minimum.

When power takeoff will be worked, then only need right chamber at cylinder block (5), the air pressure (this pneumatic supply can directly be linked on the automobile air receiver) of connecting 7-8bar by the screw on the cylinder head (7) at this moment, the left chamber of cylinder block (5) is the normal pressure of 4bar, right chamber is the high pressure of 7-8bar, the difference of pressure that two chambeies form is apart from using piston fork shaft (37) to move to left, the shift fork (2) that drive is fixed on it moves to left, shift fork (2) promotes clutch tooth cover (35) again and moves to left, till when the end face of cylinder block (5) is run in the piston left side of the axis of the piston (37), can not continuing to move to left, linking to each other of clutch tooth cover (35) female splines one half-sum input gear (41) this moment in conjunction with tooth, the male splines of one half-sum hollow shaft (31) links to each other, thereby hollow shaft (31) and input gear (41) are linked together.Meanwhile, piston fork shaft (37) is gone up the chamfered portion of shaft end also the pin jack-up of indicator light switch (39), and it is bright that the interior indicator lamp of operator's compartment is opened, and shows that power takeoff has entered mode of operation.

The takeoff output route of power takeoff is: when hollow shaft (31) is received behind the moment of torsion and rotating speed of the male splines of change-speed box lengthening tween drive shaft, pass to input gear (41), pass to output gear shaft (22), output gear shaft (22) again and by the flange (18) that is connected on it power is finally exported by clutch tooth cover (35).

The utility model also designs the helical wheel of 90 ° of intersecting axles and pays, i.e. timing driving gear (28), timing output gear (27).This effect to gear pair is to carry out timing by the form of rotating speed, remember the needs of heavy time to satisfy some speciality car (as car hosit etc.), as long as output gear shaft (22) rotates, the timing driving gear of then fixing on it (28) also rotates simultaneously, rotate thereby drive timing output gear (27), the power takeoff work-hours is carried out timing with the form of rotating speed.

The utility model has adopted rear-mounted structure, hollow shaft is the single supported beam form, steering unit is handled for reversible gas, and have a timing output sector gear, lubricated reliable thereby the utility model work safety uses reliably, and load-carrying capacity is big, function is more complete, can satisfy the job requirement of multiple speciality car.

Claims (1)

1, the rear-mounted power takeoff of a kind of Automotive transmission is characterized in that:

A, hollow shaft (31) directly link to each other with the elongated portion of transmission countershaft,

B, have the clutch tooth cover (35) of inner flower-key, the promotion of the shift fork (2) by its outer radius links up hollow shaft (31) and input gear (41),

C, the piston fork shaft (37) that is solidified as a whole with shift fork (2) horizontally slip under the manipulation of atmosphere gas and high pressure gas,

Be equipped with on d, the output gear shaft (22) timing input gear (28) and with its 90 ° intersect ingear timing output gear (27).

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