Connecting structure of engine gearbox and rear axle

Abstract

The utility model discloses a connecting structure of an engine gearbox and a rear axle, which comprises the engine gearbox, the rear axle and a transmission case connecting the engine gearbox and the rear axle, and a first connecting hole group and a second connecting hole group are respectively arranged in the front side area and the rear side area of the transmission case. The first connecting end of the engine gearbox is fixed to the first connecting hole set on the left side of the transmission case through a fastener, and the second connecting end of the rear axle is fixed to the second connecting hole set on the right side of the transmission case through a fastener. The first connecting end of the engine gearbox and the second connecting end of the rear axle are fixed to the front side area and the rear side area of the transmission case in a staggered mode, and compared with the prior art, the transmission case has the advantage of being simple and rapid in disassembly and assembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile mechanical structures, in particular to a connection structure between an engine transmission case and a rear axle. Background Art

[0002] The rear axle is the rear drive shaft component of the vehicle power transmission. It consists of two half-bridges and can implement half-bridge differential movement. At the same time, it is also a device used to support the wheels and connect the rear wheels. The rear axle generally transmits power from the engine to the gearbox, and after the gearbox changes speed, it is transmitted to the large gear plate of the rear axle to drive the rear axle to rotate and control the rotation of the wheels. The traditional car engine is located at the head of the car, resulting in uneven load on the front tires, tire locking during emergency braking, and poor steering of the car. Therefore, some structures with engines located at the rear of the car have appeared on the market.

[0003] For example, the Chinese utility model patent "An integrated rear-axle engine vehicle" with patent publication number CN102765324A includes a frame, which is supported on front and rear axles or bracket structures through shock absorbers, and the front and rear axles or brackets are supported on the ground through tires. The rear axle includes a hollow frame, and at both ends of the hollow frame are two straight tubes, and the two straight tubes are respectively fixed on the bearings of the tires. The half shafts of the differential pass through the straight tubes and are connected to the tires, and the rotation of the half shafts drives the rotation of the tires. An engine system is arranged in the hollow frame, and the engine system is fixed in the hollow frame through engine foot vibration damping rubber. The operating system is arranged at the front end of the car and is connected to the engine through the throttle cable and the gear lever cable.

[0004] The above-mentioned engine is fixed in the hollow frame of the rear axle through the engine foot vibration-damping rubber. When the engine needs to be repaired or replaced, the hollow frame needs to be disassembled for replacement, and the disassembly and installation are relatively troublesome. Utility Model Content

[0005] The utility model aims at the problem that the engine is fixed in the hollow frame of the rear axle and the disassembly and installation is troublesome. The technical problem to be solved by the utility model is to provide a connection structure between the engine gearbox and the rear axle to solve the above problem.

[0006] The technical solution adopted by the utility model to solve the above-mentioned technical problems is: a connection structure between an engine transmission and a rear axle, including an engine transmission, a rear axle and a transmission case connecting the engine transmission and the rear axle, a front area and a rear area of ​​the transmission case are respectively provided with a first connection hole group and a second connection hole group, a first connection end of the engine transmission is fixed to the first connection hole group on the left side of the transmission case by a fastener, and a second connection end of the rear axle is fixed to the second connection hole group on the right side of the transmission case by a fastener, after being fixed, the first connection end of the engine transmission and the second connection end of the rear axle are staggered and fixed to the front area and the rear area of ​​the transmission case.

[0007] A further preferred solution of the utility model is: the transmission box has an input port and an output port, the output port and the input port are respectively staggered at the front and rear sides of the transmission box, the input port corresponds to the power output end of the engine gearbox, and the output port corresponds to the power input end of the rear axle.

[0008] A further preferred solution of the utility model is: the first connecting hole group and the second connecting hole group are both a plurality of threaded holes, the fasteners are bolts, the bolts pass through the first connecting hole group from the left side of the transmission case to fix the engine gearbox to the transmission case, and the bolts pass through the second connecting hole group from the right side of the transmission case to fix the rear axle to the transmission case.

[0009] A further preferred solution of the utility model is that a transmission member is provided in the transmission box, and the transmission member is respectively transmission-connected to the power output end of the engine transmission box and the power input end of the rear axle.

[0010] A further preferred solution of the utility model is that the first connecting end of the engine gearbox has a mounting plate, and the mounting plate has threaded holes corresponding to the first connecting hole group.

[0011] A further preferred solution of the utility model is: the first connection hole group is four threaded holes, which are arranged around the input port, and the second connection hole group is four threaded holes, which are arranged around the output port.

[0012] A further preferred solution of the utility model is: the transmission box includes a first cover plate and a second cover plate, the first cover plate is provided with a protrusion, and the second cover plate is provided with a guide step that cooperates with the protrusion.

[0013] A further preferred solution of the utility model is: the second cover plate has a fixing plate extending toward the engine housing, the fixing plate is provided with a connecting plate, one end of the connecting plate is fixedly connected to the fixing plate, and the other end is fixedly connected to the engine housing.

[0014] A further preferred solution of the utility model is that the shape of the fixing plate is a right triangle.

[0015] A further preferred solution of the utility model is that a shock-absorbing pad matching the transmission box and the rear axle is arranged between the transmission box and the rear axle.

[0016] Compared with the prior art, the utility model has the following advantages: a transmission box for connecting the engine transmission and the rear axle is arranged between the engine transmission and the rear axle, and the first connecting end of the engine transmission and the second connecting end of the rear axle are staggered and fixed at the first connecting hole group in the front area and the second connecting hole group in the rear area of ​​the transmission box respectively by fasteners; during installation, it is only necessary to align the connecting end of the engine transmission with the transmission box, and the rear axle with the transmission box, and tighten the fasteners; during disassembly, the fasteners can be removed, and the disassembly and assembly process is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and preferred embodiments. However, those skilled in the art will appreciate that these drawings are drawn only for the purpose of explaining the preferred embodiments and should not be regarded as limiting the scope of the present invention. Furthermore, unless otherwise specified, the drawings only conceptually represent the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0018] Figure 1 The three-dimensional structure diagram of the preferred embodiment of the utility model Figure 1 ;

[0019] Figure 2 The three-dimensional structure diagram of the preferred embodiment of the utility model Figure 2 ;

[0020] Figure 3 Explosion is the preferred embodiment of the utility model Figure 1 ;

[0021] Figure 4 Explosion is the preferred embodiment of the utility model Figure 2 ;

[0022] Figure 5 It is an exploded view of the transmission box and the engine gearbox of the preferred embodiment of the utility model;

[0023] Figure 6 Explosion is the preferred embodiment of the utility model Figure 3 .

[0024] In the figure: 1. engine gearbox; 11. first connecting end; 12. mounting plate; 13. third connecting hole group; 14. housing; 15. through hole; 2. rear axle; 21. second connecting end; 22. fourth connecting hole; 3. transmission box; 31. input port; 32. output port; 33. first connecting hole group; 34. second connecting hole group; 35. first cover plate; 351. bump; 36. second cover plate; 361. fixing plate; 362. connecting plate; 363. guide step; 4. shock-absorbing pad; 5. fastener. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are only descriptive and exemplary and should not be construed as limiting the protection scope of the present invention.

[0026] It should be noted that like reference numerals denote similar items in the following drawings, and thus, once an item is defined in one drawing, it may not be further defined or explained in subsequent drawings.

[0027] This embodiment mainly describes the connection structure between the engine, gearbox and rear axle, as follows:

[0028] like Figures 1 to 6 As shown, the connection structure between the engine transmission 1 and the rear axle 2 includes the engine transmission 1, the rear axle 2 and a transmission box 3 connecting the engine transmission 1 and the rear axle 2, the engine transmission 1 is used to provide power to the rear axle 2, the front area and the rear area of ​​the transmission box 3 are respectively provided with a first connection hole group 33 and a second connection hole group 34, the first connection end 11 of the engine transmission 1 has a third connection hole group 13 corresponding to the first connection hole group 33, the fastener 5 passes through the third connection hole to fix the first connection end 11 of the engine transmission 1 to the first connection hole group 33 on the left side of the transmission box 3, and the second connection end 21 of the rear axle 2 has a There is a fourth connection hole group 22 corresponding to the second connection hole group 34, and the fastener 5 passes through the fourth connection hole group 22 to fix the second connection end 21 of the rear axle 2 to the second connection hole group 34 on the right side of the transmission box 3. After fixation, the connection end of the engine transmission 1 and the connection end of the rear axle 2 are staggered and fixed to the front and rear areas of the transmission box 3. The staggered setting can avoid interference during the fixing process of the fastener 5, which may cause installation difficulties. When disassembling or installing, it is only necessary to correspond the connection end of the engine transmission 1 to the transmission box 3, and the rear axle 2 to the transmission box 3, and loosen or tighten the fastener 5 to achieve disassembly and assembly. The disassembly and assembly process is simple and quick.

[0029] As shown in the figure, the transmission box 3 has an input port 31 and an output port 32. The output port 32 and the input port 31 are staggered at the front and rear sides of the transmission box 3 respectively. The input port 31 corresponds to the power output end of the engine transmission box 1, and the output port 32 corresponds to the power input end of the rear axle 2. The power output end of the engine transmission box 1 passes through the input port 31, and the power input end of the rear axle 2 passes through the output port 32.

[0030] Specifically, the first connecting hole group 33 and the second connecting hole group 34 are both a plurality of threaded holes, the fastener 5 is a bolt, the third connecting hole group 13 is a threaded hole matching the first connecting hole group 33, the fourth connecting hole group 22 is a threaded hole corresponding to the second connecting hole group 34, the bolt passes through the first connecting hole group 33 and the third connecting hole group 13 from the left side of the transmission box 3 to fix the engine gearbox 1 to the transmission box 3, and the bolt passes through the second connecting hole group 34 and the fourth connecting hole group 22 from the right side of the transmission box 3 to fix the rear axle 2 to the transmission box 3.

[0031] Specifically, the transmission box 3 has a transmission member, which is respectively connected to the power output end of the engine transmission gearbox 1 and the power input end of the rear axle 2. The transmission member is arranged to transmit the power of the engine transmission gearbox 1 to the power input end of the rear axle 2, thereby driving the rear axle 2 to rotate.

[0032] Specifically, the first connecting end 11 of the engine transmission 1 has a mounting plate 12, and the third connecting hole group 13 is located on the mounting plate 12. When the engine transmission 1 needs to be connected to the transmission box 3, bolts pass through the first connecting hole and the threaded holes on the mounting plate 12 to fix the engine transmission 1 to the transmission box 3. The mounting plate 12 has a through hole 15, and the through hole 15 is for the power output of the engine transmission 1 to pass through, and is installed in conjunction with the input port 31.

[0033] Specifically, the first connection hole group 33 is four threaded holes and is arranged around the input port 31, and the second connection hole group 34 is four threaded holes and is arranged around the output port 32. The threaded holes are arranged around the input port 31 and the output port 32. After installation, the structure is relatively stable and not easy to loosen.

[0034] Specifically, the transmission box 3 includes a first cover plate 35 and a second cover plate 36. The first cover plate 35 is provided with a protrusion 351, and the second cover plate 36 is provided with a guide step 363 that cooperates with the protrusion 351. When the transmission box 3 is installed and covered, the protrusion 351 can be first clamped on the guide step 363. At this time, the guide step 363 guides and positions the protrusion 351, and the first cover plate 35 and the second cover plate 36 are temporarily fixed. Finally, the bolts are fixed. The setting of the protrusion 351 and the guide step 363 improves the efficiency of installation, and is simple, convenient and quick.

[0035] Specifically, the second cover plate 36 has a fixing plate 361 extending toward the engine housing 14, and the fixing plate 361 is in the shape of a right triangle. A connecting plate 362 is provided on the fixing plate 361, and one end of the connecting plate 362 is fixedly connected to the fixing plate 361 by bolts and nuts, and the other end is fixedly connected to the engine housing 14 by bolts and nuts. The provision of the triangular fixing plate 361 can further enhance the stability of the transmission box 3 and the engine gearbox 1.

[0036] Specifically, a shock-absorbing pad 4 matching the transmission box 3 and the rear axle 2 is provided between the transmission box 3 and the rear axle 2. By providing the shock-absorbing pad 4, the vibration generated by the engine transmission box and the rear axle 2 during operation can be reduced. The shock-absorbing pad 4 is made of rubber.

[0037] During installation, the power output end of the engine transmission 1 is inserted into the input port 31 of the transmission box 3 to connect with the transmission member, and the power input end of the rear axle 2 is inserted into the transmission box 3 to connect with the transmission member. The first connection end 11 of the engine transmission 1 is fixed to the first connection hole group 33 on the left side of the transmission box 3 by bolts, and the second connection end 21 of the rear axle 2 is fixed to the second connection hole group 34 on the right side of the transmission box 3 by bolts. The installation is simple and quick. When disassembling, the fixing bolts can be screwed out for quick disassembly.

[0038] In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "back", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.

[0039] The connection structure between the engine gearbox and the rear axle provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation method of the utility model. The description of the above embodiments is only used to help understand the utility model and its core ideas. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified. These improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. The connection structure between the engine, gearbox and rear axle is characterized by: It includes an engine gearbox, a rear axle and a transmission box connecting the engine gearbox and the rear axle, the front area and the rear area of ​​the transmission box are respectively provided with a first connection hole group and a second connection hole group, the first connection end of the engine gearbox is fixed to the first connection hole group on the left side of the transmission box by a fastener, and the second connection end of the rear axle is fixed to the second connection hole group on the right side of the transmission box by a fastener. After fixing, the first connection end of the engine gearbox and the second connection end of the rear axle are staggered and fixed to the front area and the rear area of ​​the transmission box.

2. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: The transmission box has an input port and an output port, and the output port and the input port are staggered at the front and rear sides of the transmission box respectively. The input port corresponds to the power output end of the engine gearbox, and the output port corresponds to the power input end of the rear axle.

3. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: The first connection hole group and the second connection hole group are both a plurality of threaded holes, and the fasteners are bolts. The bolts pass through the first connection hole group from the left side of the transmission case to fix the engine gearbox to the transmission case, and the bolts pass through the second connection hole group from the right side of the transmission case to fix the rear axle to the transmission case.

4. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: The transmission box is provided with a transmission member, which is respectively connected to the power output end of the engine gearbox and the power input end of the rear axle.

5. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: The first connecting end of the engine transmission has a mounting plate, and the mounting plate has threaded holes corresponding to the first connecting hole group.

6. The connection structure between the engine transmission and the rear axle according to claim 2, characterized in that: The first connection hole group is four threaded holes and is arranged around the input port, and the second connection hole group is four threaded holes and is arranged around the output port.

7. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: The transmission box comprises a first cover plate and a second cover plate, wherein the first cover plate is provided with a protrusion, and the second cover plate is provided with a guide step matched with the protrusion.

8. The connection structure between the engine transmission and the rear axle according to claim 7, characterized in that: The second cover plate has a fixing plate extending toward the engine housing, the fixing plate is provided with a connecting plate, one end of the connecting plate is fixedly connected to the fixing plate, and the other end of the connecting plate is fixedly connected to the engine housing.

9. The connection structure between the engine transmission and the rear axle according to claim 8, characterized in that: The fixing plate is in the shape of a right triangle.

10. The connection structure between the engine transmission and the rear axle according to claim 1, characterized in that: A shock-absorbing pad matching the transmission box and the rear axle is arranged between the transmission box and the rear axle.

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