Transmission shell and rear cover shell connecting structure

Abstract

The utility model discloses a transmission shell and rear cover shell connecting structure, which belongs to the field of automobile transmissions and comprises a transmission case large shell and an auxiliary case shell which are connected with each other, and suspension devices are arranged on the outer sides of the transmission case large shell and the auxiliary case shell; a partition wall is arranged on the transmission case large shell and divides the transmission case large shell and the auxiliary case shell into two oil cavities, an upper oil duct is arranged on the upper portion of the partition wall, and a lower oil duct is arranged on the lower portion of the partition wall. One end of the oil groove is connected with the front end of the gearbox shell, and the other end of the oil groove is connected into the reverse gear shaft hole boss; an air cylinder body is embedded in the auxiliary box shell, and the auxiliary box shell is integrally connected with an auxiliary box bearing cover. According to the small-center-distance gearbox, the problems of low shell strength, high noise of the whole gearbox and heating of the gearbox caused by miniaturization of the small-center-distance gearbox are solved, the noise is reduced, and interfaces are diversified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of automobile transmission, concretely relates to a transmission housing and rear cover housing connecting structure. BACKGROUND

[0002] The heavy truck transmission is currently developing towards miniaturization, light weight, low noise and reliability, due to the reduction of the center distance of the transmission case and the size of the housing, resulting in the problems of the housing strength and the overall heating of the transmission case. With the increasing requirement of the noise of the vehicle passability, the transmission case needs to contribute to the reduction of the vehicle noise. The three-pack mileage of the case with small center distance is also increased, and the reliability of the transmission case is also increased. At the same time, the adaptability of the small center distance also needs to be increased. In order to increase the performance index of the transmission case with small center distance, it is necessary to improve various indexes, such as the housing strength, the heat dissipation of the housing, the reliability, the low noise and the diversity of the interface.

[0003] Therefore, the utility model provides a transmission housing and rear cover housing connecting structure. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a transmission housing and rear cover housing connecting structure to overcome the defects of the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme to realize:

[0006] A transmission housing and rear cover housing connecting structure, comprising a connected transmission case and auxiliary case housing, wherein the outer side of the transmission case and the auxiliary case housing is provided with a suspension device; a partition wall is arranged on the transmission case, which divides the transmission case and the auxiliary case housing into two oil chambers; an upper oil channel is arranged on the upper part of the partition wall, and a lower oil channel is arranged on the lower part of the partition wall; an oil groove is arranged on the left side of the transmission case, one end of the oil groove is connected with the front end of the transmission case, and the other end is connected to the boss on the reverse gear shaft hole; a cylinder body is embedded in the auxiliary case housing, and the auxiliary case housing is integrally connected with the auxiliary case bearing cover.

[0007] Further, the suspension device comprises a first main suspension, a second main suspension and an auxiliary suspension; a plurality of holes are arranged on the first main suspension and the second main suspension, and the first main suspension and the second main suspension share a group of main suspension bosses and are symmetrically arranged on the outer side of the transmission case, which can reduce the noise of the vehicle passability; the auxiliary suspension is arranged on the outer side of the auxiliary case housing through an auxiliary suspension boss; a plurality of reinforcing ribs are arranged around the main suspension boss; and a plurality of vertical ribs are arranged around the auxiliary suspension boss. The arrangement of the reinforcing ribs and the vertical ribs effectively enhances the structural strength of the suspension part, improves the stability of the entire transmission during operation, and reduces the risk of component damage caused by vibration and impact.

[0008] Further, one side of the auxiliary suspension is provided with a sub-tank shell screw hole, the sub-tank shell screw hole is consistent with the height of the auxiliary suspension, the sub-tank shell screw hole is guaranteed not to be penetrated with the auxiliary suspension, and the strength of the auxiliary suspension is avoided.

[0009] Further, the outer side of the transmission box large shell is provided with a plurality of ring ribs and a plurality of cross ribs, the ring ribs and the cross ribs are arranged in cross, the heat dissipation area of the transmission box is increased, and meanwhile the strength of the transmission box large shell is increased.

[0010] Further, the upper oil channel is an annular groove, the lower oil channel is symmetrically provided with two vertical grooves, and the accurate lubrication of gears, bearings and other components in different areas can be realized.

[0011] Further, the transmission box large shell and the sub-tank shell are connected through bolts, the sub-tank shell is provided with an opening cover threaded hole, the transmission box large shell is not provided with a hole corresponding to the opening cover threaded hole, the transmission box large shell and the sub-tank shell are disassembled by screwing the bolt into the opening cover threaded hole, the design greatly simplifies the maintenance and repair process of the transmission, saves maintenance time and labor cost, improves the maintainability of the equipment, and the rear cover gasket is arranged between the combination surface of the transmission box large shell and the sub-tank shell, so that oil leakage is effectively prevented, and the sealing performance of the oil cavity in the transmission is guaranteed.

[0012] Further, the edge of the sub-tank shell is provided with a bearing hole, and the bearing hole is a blind hole.

[0013] Further, one side of the sub-tank bearing cover of the sub-tank shell is provided with a rear hole, and the rear hole is provided with an electronic odometer sensor.

[0014] Further, the contact surface of the cylinder body and the sub-tank shell is a cylinder wall, and the cylinder wall is cut off on the side close to the gear.

[0015] Further, the left side of the transmission box large shell is provided with a first power take-off window, and the right side of the sub-tank shell is provided with a second power take-off window.

[0016] Compared with the prior art, the utility model has the following beneficial technical effects:

[0017] The utility model provides a transmission housing and rear cover housing connecting structure, in order to reduce the whole box vibration, set up the suspension device on transmission case big shell and vice box shell body outside, can guarantee the demand of different host factory to suspension. Small center distance transmission case is small in size, and is easy to heat, is provided with the partition wall on transmission case big shell, divides transmission case big shell and vice box shell body into two oil cavities, is provided with the oil way on the upper portion of partition wall, is provided with the lower oil way of lower portion partition wall can guarantee the gear oil flow in two oil cavities, accelerates the heat dissipation. The oil groove is provided with transmission case shell front end on one end of oil groove, and the other end is connected to the reverse gear shaft hole boss, and the transmission case splashes oil into the oil groove in rotation, and can lubricate the front end gear of reverse gear shaft, transmission case big shell respectively, increases the reliability of transmission case. The utility model solves the problem of low shell strength, whole box noise, transmission case heating caused by small center distance transmission case miniaturization and makes the noise reduction, interface diversification.

[0018] Specifically, the center distance of the small center distance transmission case is reduced, which causes the whole box heating problem, the ring rib is arranged on the transmission case shell, the horizontal rib is arranged at the bottom, the ring rib and the horizontal rib are connected alternately, and the heat dissipation area of the transmission case is increased. The vertical rib along the shell is increased on the vice box shell body, the vertical rib is stretched to the screw hole surface of the vice box shell body, the heat dissipation area of the transmission case is increased, the vice box shell body is integrated with the cylinder body and the vice box bearing cover, and the static torsional strength of the vice box shell body is improved. ACCURACY OF DRAWINGS

[0019] Figure 1 It is a front view schematic diagram of a transmission housing and rear cover housing connecting structure in the utility model embodiment.

[0020] Figure 2 It is a side view schematic diagram of a transmission housing and rear cover housing connecting structure in the utility model embodiment.

[0021] Figure 3 It is a transmission case big shell schematic diagram in the utility model embodiment Figure 1 .

[0022] Figure 4 It is a transmission case big shell schematic diagram in the utility model embodiment Figure 2 .

[0023] Figure 5 It is a transmission case big shell schematic diagram in the utility model embodiment Figure 3 .

[0024] Figure 6 It is an oil groove cross section schematic diagram in the utility model embodiment.

[0025] Figure 7 It is a vice box shell body schematic diagram in the utility model embodiment Figure 1 .

[0026] Figure 8 for the auxiliary gearbox housing in the embodiment of the present application Figure 2 .

[0027] Figure 9 for the auxiliary gearbox housing in the embodiment of the present application Figure 3 .

[0028] In the figure, 1, transmission gearbox large shell; 2, rear cover gasket; 3, auxiliary gearbox housing; 4, first main suspension; 5, second main suspension; 6, auxiliary suspension; 7, first power take-off window; 8, reverse gear shaft hole boss; 9, oil groove; 10, reinforcing rib; 11, partition wall; 12, upper oil passage; 13, lower oil passage; 14, ring rib; 15, cross rib; 16, transmission gearbox shell front end; 17, auxiliary gearbox housing screw hole; 18, cylinder block; 19, rear hole; 20, second power take-off window; 21, auxiliary gearbox bearing cover; 22, uncapping threaded hole; 23, bearing hole; 24, cylinder wall; 25, vertical rib. DETAILED DESCRIPTION

[0029] In order to make the person skilled in the art better understand the present application scheme, the technical scheme in the embodiment of the present application will be described clearly and completely below in conjunction with the drawings in the embodiment of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0031] In the description of the embodiments of the utility model, still need explaining, unless another explicit provision and limitation, if appearing term " setting " " installation " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements inside the communication。For ordinary skilled in the art, can understand the concrete meaning of the above-mentioned term in the utility model according to specific circumstances.

[0032] The utility model provides a transmission housing and rear cover housing connecting structure, as shown in figure, Figures 1 to 9 The transmission housing and rear cover housing connecting structure, as shown in figure,

[0033] Small center distance gearbox is small in size, prone to heating, therefore, as shown in figure, Figures 3 to 4 The transmission housing and rear cover housing connecting structure, as shown in figure,

[0034] As shown in figure, Figure 3 And Figure 6 The transmission housing and rear cover housing connecting structure, as shown in figure,

[0035] The transmission housing and rear cover housing connecting structure, as shown in figure,

[0036] In some preferred examples of the utility model, the suspension device includes a first main suspension 4, a second main suspension 5 and an auxiliary suspension 6; the first main suspension 4 and the second main suspension 5 are used for reducing whole box vibration, a plurality of holes are arranged on the first main suspension 4 and the second main suspension 5, and the first main suspension 4 and the second main suspension 5 share a group of main suspension bosses and are symmetrically arranged on the outside of the transmission box big shell 1; specifically, eight holes are arranged on the first main suspension 4 and the second main suspension 5, which facilitates customer selection. The auxiliary suspension 6 is arranged on the outside of the auxiliary box shell 3 through an auxiliary suspension boss, a plurality of reinforcing ribs 10 are arranged around the main suspension boss, the strength of the first main suspension 4 and the second main suspension 5 can be ensured, a plurality of vertical ribs 25 are arranged around the auxiliary suspension boss, and the heat dissipation of the auxiliary box shell 3 and the strength of the auxiliary suspension boss can be increased.

[0037] In some preferred examples of the utility model, one side of the auxiliary suspension 6 is provided with an auxiliary box shell screw hole 17, in order to ensure that the auxiliary suspension 6 of the auxiliary box shell 3 does not interfere with the auxiliary box shell screw hole 17, the auxiliary box shell screw hole 17 is lifted to be consistent with the height of the auxiliary suspension 6, it is ensured that the auxiliary box shell screw hole 17 does not generate a through hole with the auxiliary suspension 6, and the strength of the auxiliary suspension 6 is avoided from being reduced.

[0038] In some preferred examples of the utility model, a plurality of ring ribs 14 and a plurality of horizontal ribs 15 are arranged on the outside of the transmission box big shell 1, as many ring ribs 14 and horizontal ribs 15 as possible are arranged, the ring ribs 14 and the horizontal ribs 15 are cross arranged, the heat dissipation area of the transmission box is increased, and the strength of the transmission box big shell is also increased.

[0039] In some preferred examples of the utility model, the upper oil channel 12 is an annular groove, the lower oil channel 13 is symmetrically provided with two vertical grooves, oil can flow fully in the two oil cavities, and heat dissipation is improved.

[0040] In some preferred examples of the utility model, in order to ensure the convenience of disassembling the transmission box big shell 1 and the auxiliary box shell 3, the transmission box big shell 1 and the auxiliary box shell 3 are connected through bolts, the auxiliary box shell 3 is provided with an opening cover threaded hole 22, the transmission box big shell 1 is not provided with a hole corresponding to the opening cover threaded hole 22, the transmission box big shell 1 and the auxiliary box shell 3 are disassembled by screwing the bolt into the opening cover threaded hole 22, and a rear cover gasket 2 is arranged between the combination surface of the transmission box big shell 1 and the auxiliary box shell 3, which can effectively prevent oil leakage and ensure the sealing of the oil cavity inside the transmission.

[0041] In some preferred examples of the utility model, the edge of the auxiliary box shell 3 is provided with a bearing hole 23, and the bearing hole 23 is a blind hole, and the strength of the auxiliary box shell 3 is increased.

[0042] In some preferred examples of the utility model, the rear hole 19 is arranged on one side of the auxiliary gearbox bearing cover 21 of the auxiliary gearbox shell 3, and the rear hole 19 is provided with an electronic odometer sensor.

[0043] In some preferred examples of the utility model, the contact surface of the cylinder body 18 and the auxiliary gearbox shell 3 is a cylinder wall 24, in order to avoid interference between the gear and the cylinder body 18 of the auxiliary gearbox shell 3, a clearance space needs to be left, therefore the cylinder wall 24 is cut on the side close to the gear.

[0044] In some preferred examples of the utility model, the first power takeoff window 7 is arranged on the left side of the transmission gearbox large shell 1, power takeoff of the main gearbox is realized, the second power takeoff window 20 is arranged on the right side of the auxiliary gearbox shell 3, power takeoff of the auxiliary gearbox is realized, so that the transmission gearbox can simultaneously match the main gearbox power takeoff and the auxiliary gearbox power takeoff.

[0045] The above are only preferred examples of the utility model and are not used for limiting the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement and the like within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A connection structure between a transmission housing and a rear cover housing, characterized in that, The application relates to a transmission box large shell (1) and a sub-box shell (3) connected, wherein the transmission box large shell (1) and the sub-box shell (3) are provided with suspension devices outside; a partition wall (11) is arranged on the transmission box large shell (1) to divide the transmission box large shell (1) and the sub-box shell (3) into two oil cavities; an upper oil channel (12) is arranged on the upper portion of the partition wall (11); a lower oil channel (13) is arranged on the lower portion of the partition wall (11); an oil groove (9) is arranged on the left side of the transmission box large shell (1); one end of the oil groove (9) is connected with a transmission box shell front end (16); and the other end of the oil groove (9) is connected to a reverse gear shaft hole boss (8); the sub-box shell (3) is embedded with a cylinder body (18) and is integrally connected with a sub-box bearing cover (21).

2. A transmission case and rear cover case connecting structure according to claim 1, characterized in that, The suspension devices comprise a first main suspension (4), a second main suspension (5) and an auxiliary suspension (6); a plurality of holes are arranged on the first main suspension (4) and the second main suspension (5); the first main suspension (4) and the second main suspension (5) share a group of main suspension bosses and are symmetrically arranged on the outside of the transmission box large shell (1); the auxiliary suspension (6) is arranged on the outside of the sub-box shell (3) through an auxiliary suspension boss; a plurality of reinforcing ribs (10) are arranged around the main suspension boss; and a plurality of vertical ribs (25) are arranged around the auxiliary suspension boss.

3. A transmission case and rear cover case connecting structure according to claim 2, characterized in that, One side of the auxiliary suspension (6) is provided with a sub-box shell screw hole (17) which is consistent in height with the auxiliary suspension (6).

4. The transmission case and cover case connection structure according to claim 1, characterized by A plurality of ring ribs (14) and a plurality of horizontal ribs (15) are arranged on the outside of the transmission box large shell (1); and the ring ribs (14) and the horizontal ribs (15) are arranged in a cross manner.

5. The transmission case and cover case connection structure according to claim 2, characterized by The upper oil channel (12) is an annular groove; two lower oil channels (13) are symmetrically arranged and are vertical grooves.

6. A transmission case and rear cover case connecting structure according to claim 1, characterized in that, The transmission box large shell (1) and the sub-box shell (3) are connected through bolts; the sub-box shell (3) is provided with an opening cover threaded hole (22); the transmission box large shell (1) is not provided with a hole corresponding to the opening cover threaded hole (22); the transmission box large shell (1) and the sub-box shell (3) are disassembled by screwing bolts into the opening cover threaded hole (22); and a rear cover gasket (2) is arranged between the combination surface of the transmission box large shell (1) and the sub-box shell (3).

7. The transmission case and cover case connection structure according to claim 1, characterized by The edge of the sub-box shell (3) is provided with a bearing hole (23) which is a blind hole.

8. The transmission case and cover case connection structure according to claim 1, characterized by The sub-box bearing cover (21) of the sub-box shell (3) is provided with a rear hole (19) on one side; and the rear hole (19) is provided with an electronic odometer sensor.

9. The transmission case and cover case connection structure according to claim 1, characterized by The contact surface of the cylinder body (18) and the sub-box shell (3) is a cylinder wall (24); and the cylinder wall (24) is cut off on the side close to the gear.

10. The transmission case and cover case connection structure according to claim 1, characterized by A first power take-off window (7) is arranged on the left side of the transmission box large shell (1); and a second power take-off window (20) is arranged on the right side of the sub-box shell (3).

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