CN211371222U

CN211371222U - Gearbox shell

Info

Publication number: CN211371222U
Application number: CN201922352171.1U
Authority: CN
Inventors: 冉志刚
Original assignee: CHONGQING BAIJISIXING PRESSURE CASTING CO LTD
Current assignee: CHONGQING BAIJISIXING PRESSURE CASTING CO LTD
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-28
Anticipated expiration: 2029-12-23

Abstract

The utility model relates to the field of transmissions, in particular to a gearbox shell, which comprises a base and a box body which are integrally formed, wherein the base is provided with a plurality of first threaded holes, the top of the box body is integrally formed with a plurality of connecting lugs, the connecting lugs are provided with second threaded holes, and a first reinforcing rib is connected between the connecting lugs and the side wall of the box body; a second reinforcing rib is connected between the base and the box body, and the cross section of the first reinforcing rib and the cross section of the second reinforcing rib are both triangular. This scheme has reduced the vibration of gearbox casing for gearbox casing installs more firmly, stable on the car.

Description

Gearbox shell

Technical Field

The utility model relates to a derailleur field especially relates to a gearbox housing.

Background

The transmission is a common part on an automobile and is used for changing the rotating speed and the torque of an engine, the transmission is also called a gearbox, the transmission comprises related parts such as a gearbox shell, a gear, a shaft and a bearing, the parts such as the gear, the shaft and the bearing are positioned in the gearbox shell, the gearbox shell plays a certain protection role on the parts such as the gear, the shaft and the bearing, and the gearbox shell can also play a certain heat dissipation role.

Present gearbox casing includes base and box, and box and base integrated into one piece set up, and the base is used for supporting the box, is used for holding various gears and axle in the box. At present the derailleur is installed and is connected through the bolt on the car, and the base passes through the bolt fastening promptly on the car, and the gearbox is at the operation in-process, because only the base passes through the bolt fastening on the car, and the box part of gearbox casing is not fixed, so the gearbox operation makes the vibration that the box produced great, and this kind of vibration makes the position distortion of being connected of base and car on the one hand easily, damages even, and on the other hand produces great vibration also does not benefit to and falls and improve the travelling comfort of driving.

In addition, the current gearbox casing is mostly poured into a mould and forms, and the gearbox casing that forms through the pouring has following shortcoming: the aesthetic degree of the appearance needs to be improved, including brightness, smoothness and the like; the degree of compaction of the interior of the product is low; the production efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gearbox housing to reduce gearbox housing's vibration, make gearbox housing install more firm, stable on the car.

In order to achieve the above purpose, the technical scheme of the utility model is that: a gearbox shell comprises a base and a box body which are integrally formed, wherein a plurality of first threaded holes are formed in the base, a plurality of connecting lugs are integrally formed in the top of the box body, second threaded holes are formed in the connecting lugs, and first reinforcing ribs are connected between the connecting lugs and the side wall of the box body; a second reinforcing rib is connected between the base and the box body, and the cross section of the first reinforcing rib and the cross section of the second reinforcing rib are both triangular.

When adopting above-mentioned technical scheme, a plurality of first screw holes on the base are used for making the bolt pass and fix the base on the car, because be equipped with a plurality of first screw holes on the base, so a plurality of bolt fastening of base accessible are on the car, and the base is fixed more stably on the car. The engaging lug can be as fixing the connection position on the car with the box, and the second screw hole on the engaging lug is used for making the bolt pass and fix the box on the car, because be equipped with a plurality of engaging lugs on the box, therefore box accessible bolt fastening, more stable on the car is fixed to the box. Because first screw hole is located the base, the second screw hole is located the top of box, so the bottom and the top homoenergetic of whole gearbox casing are fixed, make the top and the bottom homoenergetic of gearbox casing receive fixed power, the fixed more firm of gearbox casing, the atress is comparatively even, when the gearbox moves like this, box on the gearbox casing also can be fixed, thereby can reduce the vibration of the box on the gearbox casing, because the vibration of gearbox casing has reduced, also can avoid passing the bolt of first screw hole and second screw hole not hard up because of the vibration, make the gearbox casing install more firmly on the car, stably.

Be connected with first strengthening rib between the lateral wall of engaging lug and box, first strengthening rib can strengthen the joint strength between engaging lug and the box lateral wall, can avoid the engaging lug to fracture from the box to a certain extent. Be connected with the second strengthening rib between base and the box, the second strengthening rib can strengthen the joint strength between base and the box, can avoid the fracture between box and the base to a certain extent, does benefit to the life who improves the gearbox casing. According to the stability of triangle-shaped, set up first strengthening rib and second strengthening rib into triangle-shaped, the self structure of first strengthening rib and second strengthening rib is comparatively stable, and is more firm.

Furthermore, the side wall of the box body is provided with a plurality of arc-shaped strips. From this, through set up a plurality of arcs on the lateral wall of box, the arc also can play the effect of strengthening rib on the one hand, strengthens the self structure of box, and on the other hand, through setting up the arc, the lateral wall and the external area of contact of multiplicable box, the arc is equivalent to the fin for the radiating effect of box is better.

Furthermore, a plurality of pushing holes are arranged at the end part of the base. On the one hand, through setting up the ejection hole, can make the material on the base reduce, the cost of material saving, on the other hand, when the drawing of patterns, insert the ejection hole through the push rod in, the ejection hole inner wall offsets with the push rod, can avoid the push rod to slide for the base, and the push rod of being convenient for is released the gearbox casing from the mould, does benefit to the drawing of patterns.

Furthermore, a plurality of fins which are uniformly distributed on the circumference are arranged on the inner wall of the end part of the box body. Therefore, the fins are circumferentially distributed on the inner wall of the end part of the box body, the fins play a role in reinforcing the end part of the box body, and the structure of the end part of the box body can be firmer and more stable.

Furthermore, box tip integrated into one piece has annular connecting portion, can dismantle on the connecting portion and be connected with the end cover. Therefore, the end cover is used for blocking the end part of the box body, and the connecting part is used for being attached to the side surface of the end cover, so that the box body can be connected with the end cover.

Furthermore, all be equipped with the fixed orifices on end cover and the connecting portion, can dismantle between end cover and the connecting portion and be connected with the bolt, the bolt passes the fixed orifices. Therefore, the bolts penetrate through the fixing holes in the connecting parts and the fixing holes in the end covers, and the end covers are detachably connected to the box body.

Further, an oil filling port is arranged on the top of the box body. Therefore, lubricating oil is conveniently coated on the gear positioned in the gearbox shell through the oil filling port, the gear can be lubricated in meshing, and the service life of the gearbox is conveniently prolonged.

Furthermore, the quantity of engaging lug is four, and engaging lug evenly distributed is two in the both sides of box, the quantity of the first strengthening rib on every engaging lug. From this, be connected with two first strengthening ribs on every engaging lug, compare and use a first strengthening rib to connect, the engaging lug is connected more firmly with the box. The quantity of engaging lug is four, and engaging lug evenly distributed is in the both sides of box, when fixing the box on the car, can make the both sides of box all receive fixed power, and the box atress can be more stable.

Furthermore, the connecting part is integrally formed on the base and comprises a first annular part and a second annular part, a gap for inserting the end cover is formed between the first annular part and the second annular part, a vertical sliding groove is formed in the side face, facing the second annular part, of the first annular part, a protruding strip capable of being matched with the sliding groove is fixedly connected to the end cover, and opposite fixing holes are formed in the first annular part and the second annular part; after the end cover is placed in the gap, the fixing hole on the end cover is opposite to the fixing hole on the first annular part. When the end cover needs to be fixed on the connecting part, the end cover can be inserted into a gap between the first annular part and the second annular part, the convex strip of the end cover is inserted into the sliding groove on the first annular part, and then the end cover and the connecting part are fixed together by passing through the fixing hole on the end cover and the fixing holes on the first annular part and the second annular part through the bolts.

From this, through this scheme, when fixing end cover and connecting portion together, can insert the end cover in the clearance of first annular portion and second annular portion earlier, the bottom and the base of end cover offset, and the end cover is by first annular portion and second annular portion centre gripping, and the end cover can not topple over, when using the bolt to fix connecting portion and end cover, need not to hold up the end cover by hand, and the end cover can be in upright state automatically, and easy operation is convenient. In addition, through the cooperation of sand grip and spout, can play the effect of certain direction in inserting the spout for the end cover, and the sand grip is located the spout, thereby it is spacing to the end cover to have played, make the end cover be located the clearance between first annular portion and the second annular portion and can not rotate, can avoid using the bolt to fix end cover and connecting portion together like this, avoid the fixed orifices on the end cover and the connecting portion to stagger, be favorable to the smooth fixed orifices of inserting the end cover of bolt and the fixed orifices of connecting portion. In addition, when gearbox test, need plug up the tip of end cover with the box, current gearbox need use the bolt to fix the end cover earlier, the gearbox detects the back that finishes, take off the bolt again, make end cover and box separation, debug the inside gear of gearbox, the bolt constantly takes off and installs like this, the operation is more troublesome, and through this scheme, can directly insert the end cover in the clearance of first annular portion and second annular portion, thereby realized that the end cover plugs up the tip of box, when needs are debugged the inside gear of gearbox, can directly take out the end cover from the clearance, and easy operation is convenient, the trouble of dismantling the bolt has been avoided.

Further, the base and the box body are formed by die casting. From this, compare current gearbox casing pouring and form, the outward appearance of gearbox casing is brighter and smooth, and the outward appearance is more pleasing to the eye to efficiency is higher, low in production cost, and in addition, the quality of the inside of product is more compact.

Drawings

FIG. 1 is a perspective view of a transmission housing according to embodiment 1;

FIG. 2 is a plan view of an end portion of a transmission case in embodiment 2;

FIG. 3 is a sectional view taken along line B-B of FIG. 2;

fig. 4 is a front view of the side of the end cap in contact with the first annular portion.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the oil filter comprises a base 1, a box body 2, an arc-shaped strip 3, a connecting portion 4, a fixing hole 5, a fin 6, a connecting lug 7, a second threaded hole 8, a first reinforcing rib 9, an oil filling port 10, a push-out hole 11, a second reinforcing rib 12, a first annular portion 13, a second annular portion 14, a gap 15, a sliding groove 16, a pulling portion 17, a protruding strip 18, an end cover 19 and a shaft hole 20.

Example 1

Substantially as shown in figure 1: a gearbox shell comprises a base 1 and a box body 2 which are integrally formed, wherein the base 1 and the box body 2 are formed in a die-casting mode, and the cross section of the box body 2 is circular. The base 1 is provided with a plurality of first threaded holes for bolts to pass through, thereby fixing the base 1 to the automobile. Integrated into one piece has a plurality of engaging lugs 7 on the top of box 2, the quantity of engaging lug 7 in this embodiment is four, the left side of box 2, the right side both sides respectively are equipped with two engaging lugs 7, engaging lug 7 is close to the tip in box 2, all be equipped with second screw hole 8 on every engaging lug 7, thereby the bolt of being convenient for passes engaging lug 7, fix box 2 on the car, box 2 and base 1 all can pass through the bolt fastening on the car like this, the fixed point on the gearbox casing is more, make gearbox casing install more firm on the car, and is stable, thereby it is fixed and arouse great vibration also to avoid only the base 1 of gearbox casing.

In order to ensure that the connection between the connecting lugs 7 and the box body 2 is more stable, two first reinforcing ribs 9 are connected between each connecting lug 7 and the box body 2, and the first reinforcing ribs 9 are plate-shaped; in order to make the connection between the base 1 and the box body 2 more firm, a second reinforcing rib 12 is connected between the base 1 and the box body 2, and the number of the second reinforcing ribs 12 on the two sides of the box body 2 is respectively three. In this embodiment, both the cross-sectional shape of the first reinforcing bead 9 and the cross-sectional shape of the second reinforcing bead 12 are triangular, so that the structures of the first reinforcing bead 9 and the second reinforcing bead 12 are more stable. In order to make the structure of the tip of box 2 comparatively firm, be equipped with a plurality of circumference evenly distributed's fin 6 on the inner wall of 2 tips of box, fin 6 can be with the quick outside transmission of the heat in the gearbox on the one hand, improves the heat transfer effect of gearbox, and reinforcing radiating efficiency, on the other hand can carry out axial reinforcement to the tip structure of box 2, promotes the anti deformability of 2 tips of box, can avoid the weak department of 2 tips of box to produce deformation.

Be equipped with a plurality of axial distribution's arc strip 3 on the lateral wall of box 2, through setting up a plurality of arc strips 3, arc strip 3 can increase box 2 and external area of contact, does benefit to the heat dissipation of box 2, and arc strip 3 also can play the effect of strengthening rib in addition does benefit to the intensity that improves box 2. Be equipped with a plurality of on base 1's the tip and push out hole 11, this transmission housing is at the drawing of patterns in-process like this, the push rod can insert and push out in hole 11, be convenient for release the transmission housing from the mould, and be equipped with a plurality of push out holes 11 on base 1, a plurality of push out holes 11 can form a plurality of cavity portions on the casing, do benefit to the heat in the gearbox and outwards give off fast, the heat dissipation function of transmission housing is improved, the setting of cavity portion also can reduce with the material simultaneously, and production cost is reduced. Be equipped with oil filler hole 10 on the top of box 2, can push lubricating oil in to the gearbox casing through oil filler hole 10 to be convenient for lubricate the gear in the gearbox casing, make the gear engagement in the gearbox more smooth and easy and improve the life of gear.

An annular connecting part 4 is integrally formed at the end of the box body 2, and a circular end cover (not shown) is detachably connected to the connecting part 4 to plug the end of the box body 2. The specific connection mode of the end cover and the box body 2 is as follows: all be equipped with fixed orifices 5 on end cover and the connecting portion 4, the fixed orifices on the end cover and the fixed orifices 5 on the connecting portion 4 can just right, have worn the bolt between the fixed orifices on the end cover and the fixed orifices 5 on the connecting portion 4 to realized linking together end cover and box 2. The end cover is connected with the box body 2 through the bolts, so that the structure is simple, the assembly and disassembly are convenient, and the connection cost is low.

Example 2

As shown in fig. 2 to 4, in the present embodiment, the connecting portion 4 is integrally formed on the base 1, the connecting portion 4 includes a first annular portion 13 and a second annular portion 14, the first annular portion 13 is integrally formed on the box body 2, the second annular portion 14 is integrally formed on the base 1, the first annular portion 13 and the second annular portion 14 are oppositely disposed, a gap 15 for inserting the end cap 19 is disposed between the first annular portion 13 and the second annular portion 14, as shown in fig. 3, a vertical sliding slot 16 is disposed on a side surface of the first annular portion 13 facing the second annular portion 14, as shown in fig. 4, an axial hole 20 is disposed on the end cap 19, a vertical protruding strip 18 capable of cooperating with the sliding slot 16 is integrally formed on the end cap 19, and opposite fixing holes 5 are disposed on the first annular portion 13 and the second annular portion 14; after the end cap 19 is placed in the gap 15, the fixing hole of the end cap 19 is opposite to the fixing hole 5 of the first annular portion 13.

When it is desired to fix the end cap 19 to the end of the casing 2, the side of the end cap 19 provided with the rib 18 is directed toward the first annular portion 13, and the end cap 19 is inserted into the gap 15, while the rib 18 is inserted into the sliding groove 16, and the end cap 19 is pressed downward, so that the rib 18 slides downward in the sliding groove 16, the end cap 19 is inserted into the gap 15, the bottom of the end cap 19 abuts against the base 1, and the end cap 19 blocks the end of the casing 2. After the bottom of the end cover 19 abuts against the base 1, the fixing hole 5 on the end cover 19 is opposite to the fixing hole 5 on the connecting part 4, and the end cover 19 cannot rotate under the matching of the convex strip 18 and the sliding groove 16, the fixing hole on the end cover 19 and the fixing hole 5 on the connecting part 4 cannot be staggered, and then the bolt penetrates through the fixing hole on the end cover 19 and the fixing hole 5 on the connecting part 4, so that the end cover 19 and the box body 2 are fixed together through the bolt.

In addition, a pulling portion 17 is welded to the top of the end cap 19, and the pulling portion 17 is pulled to facilitate the extraction of the end cap 19 from the gap 15.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several modifications and improvements 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 present invention and the practicability of the patent. The technology, shape and construction parts which are not described in the present invention are all known technology.

Claims

1. The utility model provides a gearbox shell, includes base and the box that integrated into one piece set up, be equipped with a plurality of first screw holes on the base, its characterized in that: a plurality of connecting lugs are integrally formed on the top of the box body, second threaded holes are formed in the connecting lugs, and first reinforcing ribs are connected between the connecting lugs and the side wall of the box body; and a second reinforcing rib is connected between the base and the box body, and the cross section of the first reinforcing rib and the cross section of the second reinforcing rib are both triangular.

2. A transmission housing according to claim 1, wherein: the side wall of the box body is provided with a plurality of arc-shaped strips.

3. A transmission housing according to claim 1, wherein: the end part of the base is provided with a plurality of push-out holes.

4. A transmission housing according to claim 1, wherein: and a plurality of fins which are uniformly distributed circumferentially are arranged on the inner wall of the end part of the box body.

5. A transmission housing according to claim 1, wherein: the end part of the box body is integrally formed with an annular connecting part, and an end cover is detachably connected to the connecting part.

6. A gearbox housing according to claim 5, wherein: the end cover and the connecting portion are both provided with fixing holes, bolts are detachably connected between the end cover and the connecting portion, and the bolts penetrate through the fixing holes.

7. A transmission housing according to claim 1, wherein: an oil filling port is arranged on the top of the box body.

8. A gearbox housing according to any one of claims 1 to 7, wherein: the quantity of engaging lug is four, and engaging lug evenly distributed is two in the both sides of box, the quantity of the first strengthening rib on every engaging lug.

9. A gearbox housing according to claim 6, wherein: the connecting part is integrally formed on the base and comprises a first annular part and a second annular part, a gap for inserting the end cover is formed between the first annular part and the second annular part, a vertical sliding groove is formed in the side face, facing the second annular part, of the first annular part, a protruding strip capable of being matched with the sliding groove is fixedly connected to the end cover, and opposite fixing holes are formed in the first annular part and the second annular part; after the end cover is placed in the gap, the fixing hole in the end cover is opposite to the fixing hole in the first annular part.

10. A transmission housing according to claim 8, wherein: the base and the box body are formed by die casting.