Integrated drive axle and mining trackless rubber-tyred vehicle

Abstract

The utility model relates to the technical field of vehicles, and discloses an integrated drive axle and a mining trackless rubber-tyred vehicle. The integrated drive axle comprises an axle housing, a speed reducer, a driving piece and an emergency brake. The reducer is provided with a first transmission shaft; the driving part is arranged at one end of the first transmission shaft; the output end of the driving part is in transmission connection with the first transmission shaft; the emergency brake is arranged at the other end of the first transmission shaft and suitable for friction braking with the brake pad. According to the integrated drive axle, the speed reducer, the driving part and the emergency brake are integrally arranged, the driving part and the emergency brake are in transmission connection through the first transmission shaft, power output of the driving part is controlled by arranging the emergency brake, and therefore emergency braking is achieved; and electromagnetic interference is reduced, the efficiency and reliability of the whole vehicle are improved, light weight is realized, and the cost is reduced, so that the performance characteristics of the integrated drive axle are suitable for operation in a mine environment.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field, concretely relates to a kind of integrated drive axle and mining trackless rubber-tyred vehicle. BACKGROUND

[0002] With the rapid development of mining industry, mining trackless rubber-tyred vehicle gradually becomes the important equipment of the transportation of goods and personnel in mine. However, the complex and harsh working environment in mine puts forward higher safety and performance requirements to transport vehicles. For example, according to the provisions of MT / T 1199-2023 standard, the related components of mining trackless rubber-tyred transport vehicle need to have anti-collision ability, and light metal materials cannot be used. In addition, to ensure the safety of operation in mine, the vehicle driving speed should not exceed 35km / h. These requirements bring strict restrictions on the design of drive system.

[0003] Conventional electric vehicle rear axle usually cannot meet the needs of mine operation, the main reason is that its structure and performance characteristics are not suitable for mine environment. For example, to realize power transmission, the existing technology usually adopts the way of reducing motor shaft speed and increasing output torque through reduction mechanism. However, most of the existing mining explosion-proof drive axle is modified based on the original vehicle structure, and only the engine and transmission assembly are removed and directly replaced by motor assembly. This modification method has original structure and complex connection mode, which leads to large size and excessive length, and is not conducive to use and operation in narrow space in mine. SUMMARY

[0004] Therefore, the utility model provides a kind of integrated drive axle and mining trackless rubber-tyred vehicle to solve the problems of structure and performance characteristics of electric drive axle in prior art, which are not conducive to mine environment operation.

[0005] To solve the above technical problems, the technical scheme of the utility model is as follows:

[0006] In the first aspect, the utility model provides an integrated drive axle, which comprises a bridge shell, a reduction gear, a drive member and an emergency brake. The reduction gear is arranged on the bridge shell, and the reduction gear is provided with a first transmission shaft. The drive member is arranged at one end of the first transmission shaft, and the output end of the drive member is in transmission connection with the first transmission shaft. The emergency brake is arranged at the other end of the first transmission shaft, and the emergency brake is adapted to frictionally brake with brake pads.

[0007] The utility model has the following advantages:

[0008] The integrated drive axle is provided by integrating the speed reducer, the driving part and the emergency brake, the driving part and the emergency brake are connected through the first transmission shaft, the power output of the driving part is controlled through the emergency brake, so that the emergency brake is realized, the mechanical connection and the wire harness connection between the parts are reduced, the electromagnetic interference is reduced, the efficiency and the reliability of the vehicle are improved, the light weight is realized, and the cost is reduced, so that the performance characteristics of the integrated drive axle are adapted to the operation in the mine environment.

[0009] According to the first aspect of the utility model, the integrated drive axle further comprises a differential, the differential is arranged on the axle housing, the speed reducer is provided with a second transmission shaft, and the differential is connected with the speed reducer through the second transmission shaft.

[0010] According to the first aspect of the utility model, the integrated drive axle further comprises a wheel edge brake, the wheel edge brake is arranged at both ends of the axle housing, and the wheel edge brake is suitable for braking the wheel.

[0011] According to the first aspect of the utility model, the integrated drive axle further comprises a controller, the wheel edge brake and the emergency brake are connected with the controller, the wheel edge brake has a fault state and a working state, in the working state, the controller controls the emergency brake to separate from the brake pad, and in the fault state, the controller controls the emergency brake to frictionally brake the brake pad.

[0012] According to the first aspect of the utility model, the emergency brake further comprises a hydraulic drive mechanism and an execution part, and the controller is suitable for controlling the hydraulic drive mechanism to push the execution part to frictionally brake or separate from the brake pad.

[0013] According to the first aspect of the utility model, the emergency brake and the wheel edge brake are both wet brakes.

[0014] According to the first aspect of the utility model, the driving part is a permanent magnet synchronous motor.

[0015] Secondly, the utility model further provides a mine-used trackless rubber-tyred vehicle, which comprises shock supports and an integrated drive axle. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative labor.

[0017] Figure 1 A sectional view of the integrated drive axle according to an embodiment of the present application.

[0018] Explanation of reference signs:

[0019] 1, axle housing; 2, speed reducer; 21, first transmission shaft; 22, second transmission shaft; 3, driving member; 4, emergency brake; 5, differential; 6, wheel edge brake. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0021] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and thus cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0023] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0024] Reference Figure 1As shown in the first aspect of the utility model, the utility model provides an integrated drive axle, include: axle housing 1, speed reducer 2, drive piece 3, emergency brake 4;Speed reducer 2 is located on axle housing 1, and speed reducer 2 is equipped with first transmission shaft 21;Drive piece 3 is located at one end of first transmission shaft 21, and the output end of drive piece 3 is in transmission connection with first transmission shaft 21;Emergency brake 4 is located at the other end of first transmission shaft 21, and emergency brake 4 is adapted to rub brake pad friction braking.

[0025] Specifically, the integrated drive axle is provided by integrating the speed reducer 2, the drive piece 3 and the emergency brake 4, the drive piece 3 and the emergency brake 4 are in transmission connection through the first transmission shaft 21, the power output of the drive piece 3 is controlled by the emergency brake 4, so that the emergency braking is realized, the mechanical connection and the wire harness connection between the components are reduced, the electromagnetic interference is reduced, the efficiency and the reliability of the vehicle are improved, the lightweight is realized, and the cost is reduced, so that the performance characteristics of the integrated drive axle are adapted to the operation in the mine environment.

[0026] It can be understood that, in the normal operation state of the integrated drive axle, the drive piece 3 drives the speed reducer 2 to drive the axle housing 1 to rotate, so as to drive the wheels to rotate, when emergency braking is needed, the emergency brake 4 is in contact and friction with the brake pad, so as to provide the first transmission shaft 21 with a torque opposite to the drive piece 3, so that the speed reducer 2 stops running, and the emergency braking is realized. By setting the emergency brake, the demand of the integrated drive axle for the operation in the coal mine environment is met, and the safety and the reliability are improved.

[0027] In the first aspect embodiment of the utility model, the integrated drive axle further comprises a differential 5, the differential 5 is arranged on the axle housing 1, the speed reducer 2 is provided with a second transmission shaft 22, and the differential 5 is in transmission connection with the speed reducer 2 through the second transmission shaft 22.

[0028] Specifically, the differential 5 is arranged on the axle housing 1, the speed reducer 2 is provided with the second transmission shaft 22, and the speed reducer 2 is in transmission connection with the differential 5 through the second transmission shaft 22, so that when the drive piece 3 runs, the first transmission shaft 21 rotates to drive the second transmission shaft 22 to drive the differential 5 to drive the left and right half shafts of the axle housing 1 to rotate, and the vehicle is arranged at the two ends of the left and right half shafts, so that the two vehicles rotate relatively.

[0029] In the first aspect embodiment of the utility model, the integrated drive axle further comprises a wheel edge brake 6, the wheel edge brake 6 is arranged at the two ends of the axle housing 1, and the wheel edge brake 6 is adapted to brake the wheels.

[0030] In the first aspect embodiment of the utility model, the integrated drive axle further includes a controller, the wheel brake 6 and the emergency brake 4 are all in communication connection with the controller, the wheel brake 6 has a fault state and a working state, in the working state, the controller controls the emergency brake 4 to separate from the brake pad, in the fault state, the controller controls the emergency brake 4 to rub brake with the brake pad.

[0031] Specifically, the wheel brake 6 is arranged at both ends of the axle housing 1 and located outside the wheel, so as to brake the wheel, when the wheel brake 6 fails, the controller receives the fault information of the wheel brake 6, controls the emergency brake 4 to start, so that the emergency brake 4 contacts and rubs the brake pad, and emergency braking is realized. In the normal running state of the wheel brake 6, the emergency brake 4 is separated from the brake pad.

[0032] It can be understood that the arrangement of the emergency brake 4 and the wheel brake 6 ensures the safety performance and reliability of the integrated drive axle, so as to ensure that the integrated drive axle is suitable for working in a coal mine environment.

[0033] In the first aspect embodiment of the utility model, the emergency brake 4 further includes a hydraulic drive mechanism and an execution component, and the controller is adapted to control the hydraulic drive mechanism to push the execution component to rub brake with the brake pad or separate from the brake pad.

[0034] It can be understood that the hydraulic drive mechanism drives the execution component to rub brake with the brake pad or separate from the brake pad, the hydraulic transmission can output large thrust or large torque, low-speed large-tonnage movement can be realized, the hydraulic transmission can conveniently realize stepless speed regulation, the speed regulation range is large, and the speed can be regulated during system operation; in addition, under the same power condition, the hydraulic transmission device is small in size, light in weight and compact in structure.

[0035] In the first aspect embodiment of the utility model, the emergency brake 4 and the wheel brake 6 are both wet brakes.

[0036] Specifically, the dry brake and the wet brake are both brakes that brake by utilizing the friction principle, and convert mechanical kinetic energy into heat energy dissipated by the brake. However, the wet brake adopts a closed structure, and the friction plate works in an oil immersion closed environment, and part of the heat generated during braking is absorbed by the structural elements of the brake, and most of the heat is taken away by the cooling liquid. The cooling condition of the dry brake is not as good as that of the oil-cooled type, and the thermal stability of the friction lining after heating is affected, so the requirement for the friction plate is very high. The wet brake belongs to a full-plate brake, and it is easy to increase the friction area, and the braking torque capacity is obviously higher than that of the dry brake. In terms of braking stability, the wet type is superior to the dry type. The wet brake is resistant to high temperature, good in heat dissipation, less in wear, good in thermal stability and braking stability. The wet brake is good in sealing, strong in anti-pollution ability, large in structural rigidity, uniform in lining wear, high in braking efficiency, and improves the use reliability.

[0037] Compared with dry brake, wet brake has many characteristics such as large braking torque, stable and reliable performance, good heat dissipation, reasonable structure, small friction and long service life.

[0038] In the first aspect embodiment of the utility model, drive piece 3 is permanent magnet synchronous motor.

[0039] Secondly, the utility model also provides a mine trackless rubber -tyred vehicle, include: shock support and integrated drive axle, integrated drive axle locates on shock support.

[0040] Although the embodiments of the utility model are described in combination with the drawings, various modifications and variations can be made by those skilled in the art without departing from the spirit and scope of the utility model, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An integrated drive axle characterized by, It comprises: an axle housing (1); a reducer (2) arranged on the axle housing (1), the reducer (2) being provided with a first transmission shaft (21); a driving member (3) arranged at one end of the first transmission shaft (21), the output end of the driving member (3) being in transmission connection with the first transmission shaft (21); an emergency brake (4) arranged at the other end of the first transmission shaft (21), the emergency brake (4) being adapted to frictionally brake with a brake pad.

2. The integrated drive axle of claim 1, wherein, It further comprises a differential (5) arranged on the axle housing (1), the reducer (2) being provided with a second transmission shaft (22), the differential (5) being in transmission connection with the reducer (2) through the second transmission shaft (22).

3. The integrated drive axle of claim 1, wherein, It further comprises wheel edge brakes (6) arranged at both ends of the axle housing (1), the wheel edge brakes (6) being adapted to brake the wheels.

4. The integrated drive axle of claim 3, wherein, It further comprises a controller, the wheel edge brakes (6) and the emergency brake (4) being in communication connection with the controller, the wheel edge brakes (6) having a fault state and a working state, in the working state, the controller controls the emergency brake (4) to be separated from the brake pad, in the fault state, the controller controls the emergency brake (4) to frictionally brake with the brake pad.

5. The integrated drive axle of claim 4, wherein, The emergency brake (4) further comprises a hydraulic drive mechanism and an execution component, the controller being adapted to control the hydraulic drive mechanism to push the execution component to frictionally brake or separate from the brake pad.

6. The integrated drive axle of claim 5, wherein, The emergency brake (4) and the wheel edge brake (6) are both wet brakes.

7. The integrated drive axle of claim 1, wherein, The driving member (3) is a permanent magnet synchronous motor.

8. A mine trackless rubber-tyred vehicle characterised in that, It comprises: a shock support; the integrated drive axle of any one of claims 1-7 is arranged on the shock support.

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