Axle main cone pre-tightening force pad selecting tool

Abstract

The utility model discloses an axle main cone pretightening force gasket selecting tool, which is characterized by comprising a mandrel, a pressure head, an inner hexagonal fastening screw, an electronic digital display dial indicator, a flat washer and a hexagonal bolt, the mandrel and the pressure head are fastened and connected through a hexagon bolt and a flat washer; a hexagon socket set screw is arranged in a hole in the side face of the pressing head, an electronic digital display dial indicator penetrates through a through hole in the top of the pressing head to be fixed to the pressing head, the electronic digital display dial indicator is fixed through the hexagon socket set screw, and the compression amount of a measuring rod of the electronic digital display dial indicator changes along with the size of a gap between the mandrel and the pressing head. The structure is simple, operation is convenient, and the purpose of quick pad selection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing assembly, in particular to a vehicle axle main cone preload force selection gasket tool, which is used for selecting the main cone bearing adjustment gasket of the vehicle axle main reducer assembly. Background Art

[0002] The main function of the main reducer assembly is to reduce speed and increase torque. It is composed of a pair of driving and driven bevel gears and corresponding housings. The driving and driven bevel gears must have appropriate support stiffness in structure to ensure the stability and long life of the meshing of this pair of gears. In order to ensure that the active bevel gear has sufficient support rigidity, the preload force of the bearing supporting the active bevel gear must be adjusted, that is, on the basis of eliminating the bearing clearance, a certain clamping force is given. In actual assembly, the thickness of the adjustment gasket between the two bearings is selected to ensure that there is a certain preload force between the two bearings.

[0003] At present, when adjusting the preload force of the bearing supporting the active bevel gear and selecting the adjusting gasket, the conventional operation procedure is to pre-select an adjusting gasket of a certain thickness before assembly, assemble the active bevel gear bearing and the selected adjusting gasket, and then measure whether the preload force of the two active bevel gear bearings is consistent with the technical requirements. If not, re-select a thickened or thinned adjusting gasket based on the measured preload force, and repeat the assembly measurement. This gasket selection operation method is inefficient. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the above-mentioned prior art and provide a tool for selecting the preload force of the main cone of an axle.

[0005] The technical solution provided by the utility model is: a tool for selecting the preload force of the main cone of an axle, which is special in that it is composed of a core shaft, a pressure head, a hexagon socket set screw, an electronic digital dial indicator, a flat washer, and a hexagon bolt; the core shaft and the pressure head are fastened and connected by the hexagon bolt and the flat washer; a side hole is arranged on the side of the pressure head, and a through hole is arranged on the top of the pressure head; a hexagon socket set screw is arranged in the side hole of the pressure head; the electronic digital dial indicator is fixed on the pressure head through the through hole on the top of the pressure head, the electronic digital dial indicator is fixed by the hexagon socket set screw, and the compression amount of the measuring rod of the electronic digital dial indicator changes with the size of the gap between the core shaft and the pressure head.

[0006] Furthermore, the flat washer and the pressure head are respectively provided with a central through hole, the center of the core shaft end face is provided with a threaded hole, and the hexagonal bolt passes through the flat washer, the central through hole of the pressure head and the threaded hole in the center of the core shaft end face for fastening connection.

[0007] The beneficial effects of the utility model are as follows: 1. The main cone bearing is pressed by passing the hexagonal bolt through the pressure head and the core shaft; 2. The press-fitting gap between the pressure head and the core shaft is measured by an electronic digital dial indicator; 3. The gasket selection can be completed by pressing the main cone bearing twice front and back; 4. The selection of the main cone bearing gasket of an integral main reducer assembly is met; 5. The structure is simple and the operation is convenient, and the purpose of rapid gasket selection is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model;

[0009] Figure 2 This is a schematic diagram of the structure of the press-fit main cone bearing of the utility model;

[0010] Figure 3 It is a structural schematic diagram of the main cone bearing after the utility model is installed into the reducer housing and then pressed.

[0011] In the figure: 1. core shaft, 2. pressure head, 3. hexagon socket set screw, 4. electronic digital dial indicator, 5. flat washer, 6. hexagon bolt, 7. reducer housing, 8. main cone inner bearing, 9. spacer, 10. main cone outer bearing. DETAILED DESCRIPTION

[0012] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings.

[0013] like Figure 1 As shown, a tool for selecting the preload force of the main cone of an axle is composed of a core shaft 1, a pressure head 2, a hexagon socket set screw 3, an electronic digital dial indicator 4, a flat washer 5, and a hexagon bolt 6; a center through hole is respectively provided on the flat washer 5 and the pressure head 2, a threaded hole is provided in the center of the end face of the core shaft 1, and the hexagon bolt 6 passes through the center through hole of the flat washer 5 and the pressure head 2 and the threaded hole in the center of the end face of the core shaft 1 to fasten the pressure head 2 to the core shaft 1; a side hole is provided on the side of the pressure head 2, and the pressure head 2 is provided on the side of the pressure head 2. A through hole is opened in the center of the head 2; a hexagon socket set screw 3 is fixed in the side hole of the pressure head 2; then an electronic digital dial indicator 4 is passed through the central through hole of the pressure head 2 and fixed on the pressure head 2. The electronic digital dial indicator 4 is fixed on the pressure head 2 by the hexagon socket set screw 3. The head of the gauge rod of the electronic digital dial indicator 4 is tightly fitted with the end face of the core shaft 1, and there is a certain amount of pre-compression. The compression amount of the measuring rod of the electronic digital dial indicator 4 changes with the size of the gap between the end face of the core shaft 1 and the pressure head 2.

[0014] The utility model discloses a vehicle axle main cone preload force selection tool, when used, Figure 2 , 3As shown, it is necessary to cooperate with the reducer housing 7, main cone inner bearing 8, spacer sleeve 9, and main cone outer bearing 10 in the axle reducer assembly; the hexagonal bolt 6 passes through the flat washer 5, the center through hole of the pressure head 2 and the threaded hole on the end face of the core shaft 1 to fasten the main cone inner bearing 8, spacer sleeve 9, and main cone outer bearing 10; after the main cone inner bearing 8, spacer sleeve 9, and main cone outer bearing 10 are fastened for the first time, the reading of the electronic digital display dial indicator 4 is set to zero; the main cone inner bearing 8, spacer sleeve 9, and main cone outer bearing 10 are installed in the axle reducer housing 7 and fastened for the second time, and the rotational torque of the core shaft 1 is adjusted by adjusting the tightness of the hexagonal bolt 6. When the rotational torque of the core shaft 1 is consistent with the preload force of the main cone bearing, the reading of the electronic digital display dial indicator 4 is the thickness of the main cone selected gasket; the selection of the main cone bearing adjustment gasket of the axle main reducer assembly is satisfied.

[0015] It should be understood that the technical features not elaborated in this specification belong to the prior art. Although the implementation methods of the utility model patent are described above in conjunction with the drawings, the utility model is not limited to the above specific implementation methods, which are only illustrative and not restrictive. Ordinary technicians in this field can make more forms under the enlightenment of the utility model without departing from the scope of protection of the purpose of the utility model and the claims, which are all within the protection scope of the utility model.

Claims

1. A tool for selecting the preload force of the main cone of an axle, characterized in that: The invention comprises a core shaft (1), a pressure head (2), a hexagon socket set screw (3), an electronic digital dial indicator (4), a flat washer (5), and a hexagon bolt (6); the core shaft (1) and the pressure head (2) are fastened together by means of the hexagon bolt (6) and the flat washer (5); a side hole is provided on the side of the pressure head (2), and a through hole is provided on the top of the pressure head (2); a hexagon socket set screw (3) is provided in the side hole of the pressure head (2); the electronic digital dial indicator (4) passes through the through hole on the top of the pressure head (2) and is fixed on the pressure head (2); the electronic digital dial indicator (4) is fixed by means of the hexagon socket set screw (3); and the compression amount of the measuring rod of the electronic digital dial indicator (4) changes with the size of the gap between the core shaft (1) and the pressure head (2).

2. The axle main cone preload selection tool according to claim 1, characterized in that: The flat washer (5) and the pressure head (2) are respectively provided with a central through hole, and the center of the end face of the core shaft (1) is provided with a threaded hole. The hexagonal bolt (6) passes through the central through hole of the flat washer (5), the pressure head (2) and the threaded hole at the center of the end face of the core shaft (1) for fastening.

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