Intermediate axle assembly and vehicle

Abstract

The utility model provides an intermediate axle assembly and a vehicle, and the intermediate axle assembly comprises an axle housing and an axle cover, the transmission assembly is connected with the axle housing, the transmission assembly comprises a driving bevel gear, a driving cylindrical gear and a synchronizer, the synchronizer is connected with the driving bevel gear, and the driving cylindrical gear is connected with the driving bevel gear through the synchronizer; the pneumatic executing mechanism is connected with the axle housing, the pneumatic executing mechanism is provided with a shifting fork, and the shifting fork drives the synchronizer to move in the axis direction of the driving bevel gear, so that the driving cylindrical gear and the driving bevel gear are connected and disconnected; the displacement sensor is in signal connection with the pneumatic executing mechanism and used for collecting position signals of the shifting fork, and the pneumatic executing mechanism drives the shifting fork to move according to the position signals. The displacement sensor acquires the position signal of the shifting fork to know whether the gear shifting action of the whole vehicle is completed or not, so that the situation that the shifting fork continues to move after gear shifting is completed, and then abrasion of the shifting fork and the movable gear sleeve is caused is avoided.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, and in particular to a mid-bridge assembly and a vehicle. Background Art

[0002] At present, the shift actuator of the mid-axle assembly includes a cylinder, a shift fork and a shift fork shaft. The cylinder drives the shift fork shaft to extend and retract to drive the shift fork to move left and right. Specifically, when the cylinder is ventilated, the shift fork moving gear sleeve and the engagement teeth engage. At this time, the system cannot recognize the success of the shift in time. The cylinder will continue to be ventilated, and the shift fork will always have a tendency to drive the moving gear sleeve and the engagement teeth to engage. Since the moving gear sleeve always rotates with the synchronizer and the active bevel gear, it will cause additional wear at the joint of the shift fork and the moving gear sleeve, which will reduce the service life of the shift fork.

[0003] With regard to the technical problem that the mid-bridge assembly cannot identify the gear shifting status in a timely manner, no effective solution has been proposed so far. Utility Model Content

[0004] The main purpose of the utility model is to provide a center bridge assembly and a vehicle to solve the technical problem that the center bridge assembly cannot identify the shifting state in time.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a middle bridge assembly is provided, including: a bridge housing; a transmission component, the transmission component is connected to the bridge housing, the transmission component includes an active bevel gear, an active cylindrical gear and a synchronizer, and the active bevel gear is connected to the active cylindrical gear through the synchronizer; a pneumatic actuator, the pneumatic actuator is connected to the bridge housing, the pneumatic actuator has a shift fork, the shift fork drives the synchronizer to move along the axial direction of the active bevel gear to engage and disconnect the active cylindrical gear and the active bevel gear; a displacement sensor, the displacement sensor is connected to the pneumatic actuator signal, the displacement sensor is used to collect the position signal of the shift fork, and the pneumatic actuator drives the shift fork to move according to the position signal.

[0006] Furthermore, the displacement sensor is connected to the pneumatic actuator, and the displacement sensor is arranged opposite to the shift fork along the moving direction of the shift fork.

[0007] Furthermore, the pneumatic actuator also includes: a cylinder, a driving end of the cylinder is provided with a fork shaft, the cylinder is used to drive the fork shaft to move along the axial direction of the moving bevel gear; the fork is connected to the fork shaft, and the fork and the fork shaft are arranged at an angle; the displacement sensor is connected to the end of the cylinder away from the fork.

[0008] Furthermore, the shift fork is perpendicular to the shift fork shaft.

[0009] Furthermore, the driving bevel gear has a gear shaft, the driving cylindrical gear is sleeved on the outer wall of the gear shaft, and the driving cylindrical gear is rotatably arranged relative to the gear shaft.

[0010] Furthermore, the synchronizer includes: a gear seat, which is sleeved on the outer wall of the gear shaft; a movable gear sleeve, which is sleeved on the outer wall of the gear seat, and the movable gear sleeve is slidably arranged relative to the gear seat along the axial direction of the active bevel gear; an engaging gear sleeve is provided at one end of the active cylindrical gear close to the synchronizer, and the shift fork moves along the axial direction of the active bevel gear to engage and disconnect the movable gear sleeve with the engaging gear sleeve.

[0011] Furthermore, the middle axle assembly also includes: a differential, which is located in the axle housing and meshes with the active bevel gear; and a front wheel hub mechanism, which is located at both ends of the axle housing and meshes with the differential.

[0012] Furthermore, the middle axle assembly also includes: a transmission shaft, which is used to connect to the rear axle assembly; a driven cylindrical gear, which is coaxially connected to the transmission shaft and meshes with the driving cylindrical gear.

[0013] Furthermore, the displacement sensor is a photoelectric sensor or an optical fiber sensor.

[0014] According to another aspect of the utility model, a vehicle is provided. The vehicle includes a middle bridge assembly, and the middle bridge assembly is the middle bridge assembly mentioned above.

[0015] The technical solution of the utility model is applied, and the middle bridge assembly includes a bridge housing, a transmission assembly, a pneumatic actuator and a displacement sensor. The pneumatic actuator is connected to the displacement sensor signal, and the pneumatic actuator drives the shift fork to move according to the position signal of the shift fork, so as to drive the synchronizer to move, and finally realize the engagement and disconnection of the active cylindrical gear and the active bevel gear. In the above scheme, the displacement sensor acquires the position signal of the shift fork to know whether the shift action of the whole vehicle is completed, so as to avoid the shift fork from continuing to move after the shift is completed, thereby causing wear of the shift fork and the moving gear sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram of an embodiment of a middle axle assembly according to the utility model is shown;

[0018] Figure 2 The schematic diagram of the structure of the pneumatic actuator in the utility model is shown.

[0019] The above drawings include the following reference numerals:

[0020] 1. Bridge housing;

[0021] 2. Driving bevel gear;

[0022] 3. Driving cylindrical gear;

[0023] 31. Engagement gear sleeve;

[0024] 4. Synchronizer;

[0025] 41. Gear seat; 42. Moving gear sleeve;

[0026] 5. Displacement sensor;

[0027] 6. Pneumatic actuator;

[0028] 61. Cylinder; 62. Shift fork shaft; 63. Shift fork;

[0029] 7. First bearing;

[0030] 8. Second bearing;

[0031] 9. Differential;

[0032] 10. Transmission shaft;

[0033] 110, driven cylindrical gear;

[0034] 120. Support seat. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0037] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0039] Combination Figure 1 to Figure 2 As shown, according to a specific embodiment of the present application, a mid-bridge assembly is provided.

[0040] Specifically, the middle bridge assembly includes a bridge housing 1, a transmission assembly, a pneumatic actuator 6 and a displacement sensor 5. The transmission assembly is connected to the bridge housing 1, and the transmission assembly includes an active bevel gear 2, an active cylindrical gear 3 and a synchronizer 4. The active bevel gear 2 is connected to the active cylindrical gear 3 through the synchronizer 4. The pneumatic actuator 6 is connected to the bridge housing 1, and the pneumatic actuator 6 has a shift fork 63. The shift fork drives the synchronizer 4 to move along the axial direction of the active bevel gear 2 to engage and disconnect the active cylindrical gear 3 and the active bevel gear 2. The displacement sensor 5 is connected to the pneumatic actuator 6 signal. The displacement sensor 5 is used to collect the position signal of the shift fork. The pneumatic actuator 6 drives the shift fork 63 to move according to the position signal.

[0041] In the embodiment of the present application, the middle bridge assembly includes a bridge housing 1, a transmission assembly, a pneumatic actuator 6 and a displacement sensor 5. The pneumatic actuator 6 is connected to the displacement sensor 5 by signal. The pneumatic actuator 6 drives the shift fork 63 to move according to the position signal of the shift fork 63, so as to drive the synchronizer 4 to move, and finally realize the engagement and disconnection of the active cylindrical gear 3 and the active bevel gear 2. In the above scheme, the displacement sensor 5 acquires the position signal of the shift fork 63 to know whether the shifting action of the whole vehicle is completed, so as to avoid the shift fork 63 from continuing to move after the shifting is completed, thereby causing wear of the shift fork 63 and the moving gear sleeve 42.

[0042] It should be noted that the transmission assembly and the pneumatic actuator 6 are connected to the bridge housing 1 through the support seat 120, and a storage space is formed between the support seat 120 and the bridge housing 1, and the transmission assembly and the pneumatic actuator 6 are both located in the storage space. Among them, the two ends of the gear shaft of the active bevel gear 2 are rotatably connected to the support seat 120 through the first bearing 7, and the first bearing 7 is generally a tapered roller bearing. The displacement sensor 5 can be connected to the pneumatic actuator 6, and can also be connected to the bridge housing 1 or the support seat 120.

[0043] Preferably, if Figure 2 As shown, the displacement sensor 5 is connected to the pneumatic actuator 6, and the displacement sensor 5 is arranged relative to the fork 63 along the moving direction of the fork 63. The displacement sensor 5 is located at the end of the pneumatic actuator 6 away from the bridge housing 1, that is, the displacement sensor 5 is located outside the support seat 120, and the displacement sensor 5 does not occupy the space of other components in the support seat 120. Among them, the displacement sensor 5 is arranged relative to the fork 63 along the moving direction of the fork 63, that is, the displacement sensor 5 can collect the linear displacement of the fork without angle conversion, and the obtained position signal is more accurate.

[0044] In an exemplary embodiment of the present application, the pneumatic actuator 6 further includes a cylinder 61 and a fork shaft 62. The drive end of the cylinder 61 is provided with the fork shaft 62. The cylinder 61 is used to drive the fork shaft 62 to move along the axis direction of the movable bevel gear. The fork is connected to the fork shaft 62, and the fork is arranged at an angle to the fork shaft 62. The displacement sensor 5 is connected to the end of the cylinder 61 away from the fork.

[0045] The cylinder 61 is integrated with a controller and a solenoid valve, and the controller is used to control the action of the solenoid valve to achieve air path control of the cylinder 61. The displacement sensor 5 is connected to the controller signal, and the controller controls the action of the solenoid valve according to the position signal of the fork 63 to achieve timely opening and closing of the air path.

[0046] Preferably, the shift fork 63 is perpendicular to the shift fork shaft 62 .

[0047] Furthermore, the driving bevel gear 2 has a gear shaft, and the driving cylindrical gear 3 is sleeved on the outer wall of the gear shaft, and the driving cylindrical gear 3 is rotatably arranged relative to the gear shaft. Specifically, the driving cylindrical gear 3 is rotatably connected to the gear shaft through the second bearing 8, wherein the second bearing 8 is a needle bearing.

[0048] Furthermore, the synchronizer 4 includes a gear seat 41 and a movable gear sleeve 42, the gear seat 41 is sleeved on the outer wall of the gear shaft, that is, the gear seat 41 is stationary relative to the gear shaft, and the movable gear sleeve 42 is sleeved on the outer wall of the gear seat 41, and the movable gear sleeve 42 is slidably arranged relative to the gear seat 41 along the axial direction of the active bevel gear 2, and an engaging gear sleeve 31 is provided at one end of the active cylindrical gear 3 close to the synchronizer 4, and the shift fork moves along the axial direction of the active bevel gear 2 to shift the movable gear sleeve 42 to engage and disconnect with the engaging gear sleeve 31, that is, to achieve the engagement and disconnection of the active bevel gear 2 and the active cylindrical gear 3.

[0049] The moving gear sleeve 42 is connected to the engaging gear sleeve 31 via a synchronizing ring.

[0050] Furthermore, the middle axle assembly further includes a differential 9 and a front wheel hub mechanism, wherein the differential 9 is located in the axle housing 1 and meshes with the driving bevel gear 2, and the front wheel hub mechanism is located at both ends of the axle housing 1 and meshes with the differential 9. That is, part of the power of the driving bevel gear 2 is transmitted to the front wheel hub mechanism through the differential 9.

[0051] Furthermore, the middle axle assembly further includes a transmission shaft 10 and a driven cylindrical gear 110. The transmission shaft 10 is used for connecting the rear axle assembly. The driven cylindrical gear 110 is coaxially connected to the transmission shaft 10, and the driven cylindrical gear 110 is meshed with the driving cylindrical gear 3. That is, part of the power of the driving bevel gear 2 is transmitted to the rear axle via the driving cylindrical gear 3.

[0052] In the above embodiments, the displacement sensor 5 is a photoelectric sensor or an optical fiber sensor.

[0053] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0054] The displacement sensor 5 acquires the position signal of the shift fork 63 to know whether the gear shifting action of the whole vehicle is completed, so as to avoid the shift fork 63 continuing to move after the gear shifting is completed, thereby causing wear of the shift fork 63 and the moving gear sleeve 42.

[0055] According to another specific embodiment of the present application, a vehicle is provided. The vehicle includes a center bridge assembly, and the center bridge assembly is the center bridge assembly in the above embodiment.

[0056] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0057] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present utility model.

[0058] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0059] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A mid-bridge assembly, characterized in that: include: Axle housing (1); A transmission assembly, the transmission assembly is connected to the bridge housing (1), the transmission assembly comprises a driving bevel gear (2), a driving cylindrical gear (3) and a synchronizer (4), the driving bevel gear (2) is connected to the driving cylindrical gear (3) via the synchronizer (4); A pneumatic actuator (6), the pneumatic actuator (6) being connected to the bridge housing (1), the pneumatic actuator (6) having a shift fork (63), the shift fork (63) driving the synchronizer (4) to move along the axial direction of the active bevel gear (2) so as to enable the active cylindrical gear (3) and the active bevel gear (2) to engage and disengage; A displacement sensor (5), the displacement sensor (5) being connected to the pneumatic actuator (6) by signal, the displacement sensor (5) being used to collect a position signal of the shift fork (63), and the pneumatic actuator (6) driving the shift fork to move according to the position signal.

2. The middle bridge assembly according to claim 1, characterized in that: The displacement sensor (5) is connected to the pneumatic actuator (6), and the displacement sensor (5) is arranged opposite to the shift fork (63) along the moving direction of the shift fork (63).

3. The middle bridge assembly according to claim 2, characterized in that: The pneumatic actuator (6) further comprises: A cylinder (61), wherein a shift fork shaft (62) is provided at a driving end of the cylinder (61), and the cylinder (61) is used to drive the shift fork shaft (62) to move along the axial direction of the movable bevel gear; The shift fork (63) is connected to the shift fork shaft (62), and the shift fork (63) and the shift fork shaft (62) are arranged at an angle; The displacement sensor (5) is connected to an end of the cylinder (61) away from the shift fork (63).

4. The middle bridge assembly according to claim 3 is characterized in that: The shift fork (63) is perpendicular to the shift fork shaft (62).

5. The middle axle assembly according to claim 1, characterized in that: The driving bevel gear (2) has a gear shaft, the driving cylindrical gear (3) is sleeved on the outer wall of the gear shaft, and the driving cylindrical gear (3) is rotatably arranged relative to the gear shaft.

6. The middle axle assembly according to claim 5, characterized in that: The synchronizer (4) comprises: A gear seat (41), wherein the gear seat (41) is sleeved on the outer wall of the gear shaft; A movable gear sleeve (42), wherein the movable gear sleeve (42) is sleeved on the outer wall of the gear seat (41), and the movable gear sleeve (42) is slidably arranged relative to the gear seat (41) along the axial direction of the active bevel gear (2); An engaging tooth sleeve (31) is provided at one end of the driving cylindrical gear (3) close to the synchronizer (4), and the shift fork moves along the axial direction of the driving bevel gear (2) to shift the moving tooth sleeve (42) to engage with and disengage from the engaging tooth sleeve (31).

7. The middle axle assembly according to claim 1, characterized in that: The intermediate bridge assembly also includes: A differential (9), the differential (9) being located in the bridge housing (1), and the differential (9) being meshed with the driving bevel gear (2); A front wheel hub mechanism is located at two ends of the bridge housing (1), and the front wheel hub mechanism is meshed with the differential (9).

8. The middle axle assembly according to claim 1, characterized in that: The intermediate bridge assembly also includes: A transmission shaft (10), wherein the transmission shaft (10) is used for connection with a rear axle assembly; A driven cylindrical gear (110), wherein the driven cylindrical gear (110) is coaxially connected to the transmission shaft (10), and the driven cylindrical gear (110) is meshed with the driving cylindrical gear (3).

9. The middle axle assembly according to any one of claims 1 to 8, characterized in that: The displacement sensor (5) is a photoelectric sensor or an optical fiber sensor.

10. A vehicle, comprising a mid-bridge assembly, characterized in that: The center axle assembly is the center axle assembly according to any one of claims 1-9.

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