Left and right shell pad selecting tool and method for main speed reducer assembly of loader axle

Abstract

A left and right shell pad selecting tool of a loader axle main reducer assembly comprises a left pad selecting tool body arranged on the left side of a main reducer shell and a right pad selecting tool body arranged on the right side of the main reducer shell. The device is characterized in that the left gasket selecting tool comprises a left mounting flange and a left adjusting assembly, wherein the left mounting flange is attached to a left shell closing surface of the main reducer shell, and the left adjusting assembly is assembled in the left mounting flange and can move in the left mounting flange in the axial direction; the right gasket selecting tool comprises a right installation flange attached to the right shell closing face of the main reducer shell and a right adjusting assembly which is assembled in the right installation flange and can move in the right installation flange in the axial direction, and the inner end of the left adjusting assembly abuts against the outer end face of a left bearing at the left end of the differential shell. The inner end of the right adjusting assembly abuts against the outer end face of a right bearing at the right end of the differential shell. The pad selecting accuracy is improved, the operability and efficiency of the pad selecting process are improved, and the labor intensity is reduced. The invention further provides a left shell and right shell gasket selecting method for the main speed reducer assembly of the loader axle.

Description

Technical Field

[0001] The invention relates to a left and right shell gasket selection tool and method of a loader axle main reducer assembly, belonging to the technical field of loader axle main reducer assembly assembly. Background Art

[0002] The main reducer housing of the loader axle main reducer assembly is integrally cast, such as Figure 1 As shown, the differential is installed in the main reducer housing 100, the left and right ends of the differential housing 200 extend out of the main reducer housing 100, and extend into the left housing 101 and the right housing 102 installed on the main reducer body 100, respectively. The left / right housings are provided with bearing chambers 103 and equipped with left / right side bearings to support the ends of the differential housing 200. The active bevel gear 300 on the main reducer is meshed with the passive bevel gear 400 on the differential housing 200. The tooth side clearance between the active bevel gear 300 and the passive bevel gear 400 is adjusted by the gasket 104 in the bearing chamber 103 of the left / right housing. After being adjusted in place, the tooth side clearance and meshing imprint of the active and passive bevel gears during operation are The existing gasket selection method is to first measure the depth of the bearing mounting hole, then measure the bearing height, and subtract the bearing height from the bearing mounting hole depth to obtain the thickness of the matching preload gasket. This gasket selection method cannot eliminate the system errors in the measurement and assembly process of the main reduction assembly parts and the interference of the bearing preload clearance, and cannot ensure that the tooth side clearance and starting torque of the active and passive bevel gears can meet the preset requirements, resulting in a low pass rate of the tooth side clearance after the active and passive bevel gears are matched, and it is necessary to repeatedly disassemble and adjust the gasket thickness after assembly inspection, which not only damages the parts, but also takes a long time, has low efficiency, and is labor-intensive. Summary of the invention

[0003] The left and right housing gasket selection tooling of the loader bridge main reducer assembly provided by the present invention eliminates the system error of the measurement and assembly process of the main reducer assembly parts and the interference of the bearing preload clearance, reduces the detection error on the basis of ensuring that the tooth side clearance and starting torque of the active and passive bevel gears can meet the preset requirements, improves the accuracy of gasket selection, improves the qualified rate of the tooth side clearance after the active and passive bevel gears are matched, effectively controls the assembly quality, avoids repeated disassembly and multiple adjustments of the gasket thickness, improves the operability and efficiency of the gasket selection process, and reduces the labor intensity. The present invention also provides a method for selecting gaskets for the left and right housings of the loader bridge main reducer assembly.

[0004] In order to achieve the above object, the technical solution adopted by the present invention is: The left and right shell gasket tooling of the loader axle main reducer assembly includes a left gasket tooling installed on the left side of the main reducer shell and a right gasket tooling installed on the right side of the main reducer shell, and is characterized in that: the left gasket tooling includes a left mounting flange that fits with the left shell surface of the main reducer shell and a left adjustment component that is assembled in the left mounting flange and can move axially in the left mounting flange; the right gasket tooling includes a right mounting flange that fits with the right shell surface of the main reducer shell and a right adjustment component that is assembled in the right mounting flange and can move axially in the right mounting flange; the inner end of the left adjustment component abuts against the outer end surface of the left bearing at the left end of the differential shell, and the inner end of the right adjustment component abuts against the outer end surface of the right bearing at the right end of the differential shell.

[0005] Preferably, the inner end of the left mounting flange extends into the main reducer housing and is sleeved on the left bearing, the shell surface of the left mounting flange fits with the left shell surface, and the left mounting flange is positioned on the left housing by bolts and locating pins, and the inner end of the right mounting flange extends into the main reducer housing and is sleeved on the right bearing, the shell surface of the right mounting flange fits with the right shell surface, and the right mounting flange is positioned on the right housing by bolts and locating pins.

[0006] Preferably, the inner walls of the left mounting flange and the right mounting flange respectively have internal threads with the same pitch, and the left adjustment assembly and the right adjustment assembly have the same structure, both including an adjusting nut that cooperates with the inner wall thread of the right mounting flange or the inner wall thread of the right mounting flange, and the inner end of the adjusting nut abuts against the outer end face of the left bearing or the outer end face of the right bearing.

[0007] Preferably, the adjusting nut includes an external thread section that is threadably matched with the left mounting flange or the right mounting flange and a contact adjustment section that is coaxially aligned with the external thread section and integrally formed, the outer diameter of the contact adjustment section is smaller than the outer diameter of the external thread section, and the contact adjustment section abuts against the outer end face of the left bearing or the outer end face of the right bearing.

[0008] Preferably, the left adjustment assembly and the right adjustment assembly both include a positioning nut which is threadedly mounted in the left mounting flange or the right mounting flange and axially presses the adjustment nut.

[0009] Preferably, the adjusting nut and the positioning nut are provided with a matching through hole at the center thereof which can be matched with a wrench.

[0010] The method for selecting the left and right shells of the loader axle main reducer assembly adopts the above-mentioned left and right shells of the loader axle main reducer assembly to select the left and right shells, and is characterized in that it includes the following steps: S1: Install the left selection pad tooling on the left side of the main reducer housing, and install the right selection pad tooling on the right side of the main reducer housing; S2: Adjust the axial positions of the left adjustment assembly and the right adjustment assembly to push the differential housing to move leftward so that the tooth side clearance between the passive bevel gear on the differential housing and the active bevel gear on the main reducer is reduced to zero; S3: Adjust the axial positions of the left adjustment component and the right adjustment component, push the differential housing to move rightward to increase the tooth side clearance between the passive bevel gear and the active bevel gear, and measure the starting torque between the active bevel gear and the passive bevel gear until the tooth side clearance and the starting torque between the passive bevel gear and the active bevel gear meet the preset requirements; S4: Remove the left and right selection gasket tools from the main reducer casing, take the shell surface of the left mounting flange as the reference plane, measure the distance A between the shell surface of the left mounting flange and the inner end of the left adjustment component, take the shell surface of the right mounting flange as the reference plane, measure the distance B between the shell surface of the right mounting flange and the inner end of the right adjustment component, A and B are both average values ​​calculated after measuring multiple positions; S5: Taking the combined shell surface of the left housing as the reference plane, measure the distance C between the combined shell surface of the left housing and the bottom surface of the bearing chamber; taking the combined shell surface of the right housing as the reference plane, measure the distance D between the combined shell surface of the right housing and the bottom surface of the bearing chamber; C and D are both average values ​​calculated after measuring multiple positions; S6: If the bottom surface of the bearing chamber of the left housing is located outside the shell surface of the left housing, the thickness of the left housing gasket H 左 =A+C, if the bottom surface of the bearing chamber of the left housing is located within the shell surface of the left housing, then the thickness of the left housing gasket is H 左 =AC, if the bottom surface of the bearing chamber of the right housing is outside the shell surface of the right housing, then the thickness of the right housing gasket is H 右 =B+D, if the bottom surface of the bearing chamber of the right housing is located within the shell surface of the right housing, then the thickness of the left housing gasket is H 右 =BD; S7: Select the pad thickness H of the left shell calculated in step S6 左 Select the left gasket of corresponding thickness and measure the thickness of the left gasket. If the thickness of the left shell gasket H is calculated, 左 If the thickness difference with the left gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified. According to the right shell pad thickness H calculated in step S6 右 Select the right gasket of corresponding thickness and measure the thickness of the right gasket. If the calculated thickness of the right shell gasket is H 右 If the thickness difference with the right gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified.

[0011] Preferably, step S2 specifically refers to: loosening the adjusting nut in the left mounting flange to the left, and screwing the adjusting nut in the right mounting flange to the left to push the differential housing to move to the left, and measuring the tooth side clearance between the active bevel gear and the passive bevel gear until the tooth side clearance between the active bevel gear and the passive bevel gear is reduced to zero.

[0012] Preferably, step S3 specifically refers to: S31: First, loosen the adjusting nut in the right mounting flange to the right by N turns, and tighten the adjusting nut in the left mounting flange to the right by N turns, push the differential housing to move to the right, and then measure the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear, 1<N≤5; S32: Repeat step S31 until the tooth side clearance and starting torque of the passive bevel gear and the active bevel gear meet the preset requirements; S33: Tighten the locating nuts in the left mounting flange and the locating nuts in the right mounting flange respectively.

[0013] The beneficial effects of the invention are: The left and right shell gasket tooling of the loader axle main reducer assembly of the present invention comprises a left gasket tooling and a right gasket tooling. When the left shell and the right shell are not installed on the main reducer shell, the left gasket tooling is installed on the left side of the main reducer shell, and the right gasket tooling is installed on the right side. The left mounting flange is fitted with the left shell surface of the main reducer shell, the inner end of the left adjusting component is abutted against the left outer end surface of the bearing, the right mounting flange is fitted with the right shell surface of the main reducer shell, and the right adjusting component is abutted against the right outer end surface of the bearing. The position of the differential shell in the main reducer shell is finely adjusted through the axial movement of the left adjusting component in the left mounting flange and the axial movement of the right adjusting component in the right mounting flange, thereby adjusting the position of the differential shell in the main reducer shell. The tooth side clearance of the active bevel gear on the main reducer and the passive bevel gear on the differential housing is adjusted to make the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear meet the preset requirements; for the selection of gaskets for the left housing, it is necessary to first measure the distance between the shell surface of the left mounting flange and the inner end of the left adjustment component, as well as the distance between the shell surface of the left housing and the bottom surface of the bearing chamber when the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear meet the preset requirements, and then combine the above two measured distances according to the position distribution of the shell surface of the left housing and the bottom surface of the bearing chamber to calculate the gasket thickness of the left housing; for the selection of gaskets for the right housing, it is necessary to first measure the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear to meet the preset requirements. Assume the distance between the shell surface of the right mounting flange and the inner end of the right adjusting assembly, as well as the distance between the shell surface of the right housing and the bottom surface of the bearing chamber under the required state, and then combine the above two measured distances to calculate the right housing gasket thickness according to the position distribution of the shell surface of the right housing and the bottom surface of the bearing chamber; during the gasket selection process, the left gasket selection tooling and the right gasket selection tooling are used to promote the movement of the differential housing to adjust the tooth side clearance between the active bevel gear and the passive bevel gear, and the left gasket selection tooling and the right gasket selection tooling are used to determine the distance between the shell surface of the main reducer housing and the outer end surface of the bearing when the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear meet the preset requirements, and combine the left / right housing The thickness of the gasket is calculated from the distance between the housing surface and the bottom surface of the bearing chamber. The assembly reference surface of the left / right housing and the assembly reference surface of the left / right gasket selection tooling are both the housing surface of the main reducer housing, which unifies the assembly and inspection references, eliminates the system errors in the measurement and assembly process of the main reducer assembly parts and the interference of the bearing preload clearance, reduces the inspection error on the basis of ensuring that the tooth side clearance and starting torque of the active and passive bevel gears can meet the preset requirements, and improves the accuracy of gasket selection, thereby improving the qualified rate of the tooth side clearance after the active and passive bevel gears are matched, effectively controlling the assembly quality, avoiding repeated disassembly and multiple adjustments of gasket thickness, improving the operability and efficiency of the gasket selection process and reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of a loader axle main reducer assembly in the prior art.

[0015] Figure 2 It is a schematic diagram of the left and right housing gasket tooling of the loader axle main reducer assembly of the present invention being assembled on the main reducer housing.

[0016] Figure 3 This is a schematic diagram of the left mounting flange.

[0017] Figure 4 This is a schematic diagram of the right mounting flange.

[0018] Figure 5 Schematic diagram of the adjusting nut.

[0019] Figure 6 A schematic diagram of a positioning nut.

[0020] Figure 7 Schematic diagram of the distance A between the shell surface of the left mounting flange and the inner end of the left adjustment component in the left selection gasket tooling.

[0021] Figure 8 Schematic diagram of the distance B between the shell surface of the right mounting flange and the inner end of the right adjustment component in the right gasket selection tooling.

[0022] Fig. 9 It is a schematic diagram of the distance C between the shell surface of the left shell and the bottom surface of the bearing chamber in the left shell.

[0023] Fig.10 It is a schematic diagram of the distance D between the combined shell surface of the right shell in the left shell and the bottom surface of the bearing chamber. DETAILED DESCRIPTION

[0024] Combine the following Figures 2~10 The embodiments of the present invention are described in detail.

[0025] The left and right shell gasket tooling of the loader axle main reducer assembly includes a left gasket tooling 1 installed on the left side of the main reducer shell 100 and a right gasket tooling 2 installed on the right side of the main reducer shell 100, and is characterized in that: the left gasket tooling 1 includes a left mounting flange 3 fitted with the left shell surface 105 of the main reducer shell 100 and a left adjustment component 4 assembled in the left mounting flange 3 and can move axially in the left mounting flange 3; the right gasket tooling 2 includes a right mounting flange 5 fitted with the right shell surface 106 of the main reducer shell 100 and a right adjustment component 6 assembled in the right mounting flange 5 and can move axially in the right mounting flange 5; the inner end of the left adjustment component 4 abuts against the outer end surface of the left bearing 201 at the left end of the differential shell 200, and the inner end of the right adjustment component 6 abuts against the outer end surface of the right bearing 202 at the right end of the differential shell 200.

[0026] The left and right housing gasket tooling of the loader axle main reducer assembly described above includes a left gasket tooling 1 and a right gasket tooling 2. When the left housing 101 and the right housing 102 are not installed on the main reducer housing 100, the left gasket tooling 1 is installed on the left side of the main reducer housing 100, and the right gasket tooling 2 is installed on the right side. The left mounting flange 3 is fitted with the left housing surface 105 of the main reducer housing 100, the inner end of the left adjusting component 4 is abutted against the outer end surface of the left bearing 201, the right mounting flange 5 is fitted with the right housing surface 106 of the main reducer housing 100, and the right adjusting component 6 is abutted against the outer end surface of the right bearing 202. The differential housing 200 is adjusted on the main reducer by the axial movement of the left adjusting component 4 in the left mounting flange 3 and the axial movement of the right adjusting component 6 in the right mounting flange 5. The position in the housing 100 is fine-tuned, thereby adjusting the tooth side clearance of the active bevel gear 300 on the main reducer 100 and the passive bevel gear 400 on the differential housing 200, so that the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements; for selecting the gasket for the left housing, it is necessary to first measure the distance between the shell surface of the left mounting flange 3 and the inner end of the left adjustment component 4 when the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements, as well as the distance between the shell surface of the left housing 101 and the bottom surface of the bearing chamber 103, and then combine the above two measured distances according to the position distribution of the shell surface of the left housing 101 and the bottom surface of the bearing chamber 103 to obtain the selected gasket thickness of the left housing; for selecting the gasket for the right housing, it is necessary to first measure the distance between the shell surface of the main reducer 100 and the passive bevel gear 400 when the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements. When the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements, the distance between the shell surface of the right mounting flange 5 and the inner end of the right adjusting component 6, as well as the distance between the shell surface of the right housing 102 and the bottom surface of the bearing chamber 103, are calculated by combining the above two measured distances according to the position distribution of the shell surface of the right housing 102 and the bottom surface of the bearing chamber 103 to obtain the selected gasket thickness of the right housing; during the gasket selection process, the left gasket selection tooling 1 and the right gasket selection tooling 2 are used to push the differential housing 200 to move to adjust the tooth side clearance between the active bevel gear 300 and the passive bevel gear 400, and the left gasket selection tooling 1 and the right gasket selection tooling 2 are used to confirm when the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements. The distance between the combined shell surface of the main reducer housing 100 and the outer end surface of the bearing is determined, and the thickness of the gasket is calculated in combination with the distance between the combined shell surface of the left / right housing and the bottom surface of the bearing chamber. The assembly reference surface of the left / right housing and the assembly reference surface of the left / right gasket selection tooling are both the combined shell surface of the main reducer housing 100, so that the assembly and detection references are unified, and the system errors in the measurement and assembly process of the main reducer assembly parts and the interference of the bearing preload clearance are eliminated. On the basis of ensuring that the tooth side clearance and starting torque of the active and passive bevel gears can meet the preset requirements, the detection error is reduced, and the accuracy of gasket selection is improved, thereby improving the qualified rate of the tooth side clearance after the active and passive bevel gears are matched, effectively controlling the assembly quality, avoiding repeated disassembly and multiple adjustments of gasket thickness, and improving the operability and efficiency of the gasket selection process and reducing labor intensity.

[0027] Among them, the inner end of the left mounting flange 3 extends into the main reducer casing 100 and is sleeved on the left bearing 201, the shell surface of the left mounting flange 3 is fitted with the left shell surface 105, and the left mounting flange 3 is positioned on the left casing 101 by bolts and locating pins, and the inner end of the right mounting flange 5 extends into the main reducer casing 100 and is sleeved on the right bearing 202, the shell surface of the right mounting flange 5 is fitted with the right shell surface 106, and the right mounting flange 5 is positioned on the right casing 102 by bolts and locating pins. The shell surface of the left mounting flange 3 fits with the left shell surface 105, the inner end of the left adjusting component 4 in the left mounting flange 3 abuts against the outer end surface of the left bearing 201, the shell surface of the right mounting flange 5 fits with the right shell surface 106, the inner end of the right adjusting component 6 in the right mounting flange 5 abuts against the outer end surface of the right bearing 202, the installation position of the left gasket tooling 1 on the main reduction casing 100 is the same as the installation position of the left casing 101 on the main reduction casing 100, the axial movement of the left adjusting component 4 on the left mounting flange 3 is equivalent to adding gaskets of different thicknesses in the bearing chamber of the left casing 101, the installation position of the right gasket tooling 2 on the main reduction casing 100 is the same as the installation position of the right casing 102 on the main reduction casing 100, and the axial movement of the right adjusting component 6 on the right mounting flange 5 is equivalent to adding gaskets of different thicknesses in the bearing chamber of the right casing 102 The distance between the combined shell surface of the left mounting flange 3 and the inner end of the left adjusting component 4 is equal to the distance between the left combined shell surface 105 of the main reducer housing and the outer end surface of the left bearing 201, and the distance between the combined shell surface of the right mounting flange 5 and the inner end of the right adjusting component 6 is equal to the distance between the right combined shell surface 106 of the main reducer housing and the outer end surface of the right bearing 202. When the left adjusting component 4 and the right adjusting component 6 adjust the tooth side clearance and starting torque between the active bevel gear 300 and the passive bevel gear 400 to the preset value, the distance between the left combined shell surface 105 of the main reducer housing and the outer end surface of the left bearing 201 at this time can be obtained by measuring the distance between the combined shell surface of the left mounting flange 3 and the inner end of the left adjusting component 4. The distance between the right combined shell surface 106 of the main reducer housing and the outer end surface of the right bearing 202 at this time can be obtained by measuring the distance between the combined shell surface of the right mounting flange 5 and the inner end of the right adjusting component 6.

[0028] Among them, the inner walls of the left mounting flange 3 and the right mounting flange 5 respectively have internal threads with the same pitch, and the left adjustment component 4 and the right adjustment component 6 have the same structure, both including an adjustment nut 7 that cooperates with the inner wall thread of the right mounting flange 3 or the inner wall thread of the right mounting flange 5, and the inner end of the adjustment nut 7 is against the outer end face of the left bearing 201 or the outer end face of the right bearing 202. The adjusting nut 7 can move in the left / right mounting flange to push the differential housing 200 to move and adjust the tooth side clearance of the main bevel gear 300 and the secondary bevel gear 400. For example, by loosening the adjusting nut 7 in the right mounting flange 5 to the right and screwing the adjusting nut 7 in the left mounting flange 3 to the right, the differential housing 200 can be pushed to move rightward to increase the tooth side clearance of the main bevel gear 300 and the secondary bevel gear 400. In the process of adjusting the tooth side clearance of the main bevel gear 300 and the secondary bevel gear 400 to the preset value, multiple adjustments are required. After each adjustment, the main bevel gear 300 is rotated with a torque wrench to measure the starting torque of the main bevel gear 300 and the secondary bevel gear 400 until the tooth side clearance and starting torque of the main bevel gear 300 and the secondary bevel gear 400 meet the preset requirements.

[0029] The adjusting nut 7 includes an external thread section 71 threadedly matched with the left mounting flange 3 or the right mounting flange 5 and a contact adjusting section 72 coaxially aligned with the external thread section 71 and integrally formed. The outer diameter of the contact adjusting section 72 is smaller than the outer diameter of the external thread section 71, and the contact adjusting section 72 abuts against the outer end surface of the left bearing 201 or the outer end surface of the right bearing 202. It can be seen from the accompanying drawings that the contact adjusting section 72 is on the inner side of the external thread section, and the inner end of the contact adjusting section 72 abuts against the outer end surface of the left bearing 201 or the right bearing 202. The right bearing 201 and the right bearing 202 are pushed to move by the adjusting nut 7, thereby driving the differential housing 200 to move to adjust the tooth side clearance of the main bevel gear 300 and the auxiliary bevel gear 400.

[0030] Wherein, the left adjustment component 4 and the right adjustment component 6 both include a positioning nut 8 which is threadedly mounted in the left mounting flange 3 or the right mounting flange 5 and axially presses the adjustment nut 7. The positioning nut 8 is assembled in the left mounting flange 3 and the right mounting flange 5, and the adjusting nut 7 is pressed by the positioning nut 8, so that after the tooth side clearance of the main bevel gear 300 and the auxiliary bevel gear 400 is adjusted to the right position, the position of the adjusting nut 7 in the left mounting flange 3 and the right mounting flange 5 is positioned, so as to prevent the adjustment nut 7 from moving in the left and right mounting flanges, thereby reducing the accuracy of subsequent measurement of the size, thereby improving the accuracy and reliability of the gasket selection.

[0031] The adjusting nut 7 and the positioning nut 8 are provided with a matching through hole at the center thereof, which can be matched with a spanner, so that the adjusting nut 7 and the positioning nut 8 can be conveniently moved in the left and right mounting flanges through the matching of the through hole and the spanner, thereby improving the convenience of operation.

[0032] The present invention also protects a method for selecting pads for the left and right shells of a loader axle main reducer assembly, which uses the above-mentioned left and right shell selection tooling for the loader axle main reducer assembly to select pads, and is characterized in that it includes the following steps: S1: Install the left selection pad tooling 1 on the left side of the main reduction housing 100, and install the right selection pad tooling 2 on the right side of the main reduction housing 100; S2: Adjust the axial positions of the left adjustment component 4 and the right adjustment component 6, push the differential housing 200 to move leftward so that the tooth side clearance between the passive bevel gear 300 on the differential housing 200 and the active bevel gear 400 on the final reducer 100 is reduced to zero; S3: Adjust the axial positions of the left adjustment component 4 and the right adjustment component 6, push the differential housing 200 to move rightward to increase the tooth side clearance between the passive bevel gear 400 and the active bevel gear 300, and measure the starting torque between the active bevel gear 300 and the passive bevel gear 400, until the tooth side clearance and starting torque between the passive bevel gear 400 and the active bevel gear 300 meet the preset requirements; S4: Remove the left selection pad tooling 1 and the right selection pad tooling 2 from the main reducer housing 100, take the combined shell surface of the left mounting flange 3 as the reference plane, measure the distance A between the combined shell surface of the left mounting flange 3 and the inner end of the left adjustment component 4, take the combined shell surface of the right mounting flange 5 as the reference plane, measure the distance B between the combined shell surface of the right mounting flange 5 and the inner end of the right adjustment component 6, A and B are both average values ​​calculated after measuring multiple positions, the distance A is equal to the distance between the left combined shell surface 105 of the main reducer housing 100 and the outer end surface of the left bearing 201 when the tooth side clearance and the starting torque between the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements, and the distance B is equal to the distance between the right combined shell surface 106 of the main reducer housing 100 and the outer end surface of the right bearing 202 when the tooth side clearance and the starting torque between the active bevel gear 300 and the passive bevel gear 400 meet the preset requirements; S5: Taking the shell surface of the left shell 101 as the reference plane, measure the distance C between the shell surface of the left shell 101 and the bottom surface of the bearing chamber 103; taking the shell surface of the right shell 102 as the reference plane, measure the distance D between the shell surface of the right shell 102 and the bottom surface of the bearing chamber 103; C and D are both average values ​​calculated after measuring multiple positions; since when the left shell 101 is installed on the main reducer shell 100, the shell surface of the left shell 101 fits with the left shell surface 105 of the main reducer shell 100; when the right shell 102 is installed on the main reducer shell 100, the shell surface of the right shell 102 fits with the right shell surface 106 of the main reducer shell 100; when the left mounting flange is installed on the main reducer shell 100, the shell surface of the left mounting flange 3 fits with the left shell surface 106 of the main reducer shell 100; The shell surface is matched with the left shell surface 105, and when the right mounting flange 5 is installed on the main reduction housing 100, the shell surface of the right mounting flange 5 is fitted with the right shell surface 106. Therefore, the shell surface of the left housing 101 and the shell surface of the left mounting flange 3 are the same reference plane, and the shell surface of the right housing 102 and the shell surface of the right mounting flange 5 are the same reference plane. The reference planes for measuring distance A and distance C are the same, and the reference planes for measuring distance B and distance C are the same, so that the assembly and detection references are unified, and the system errors in the measurement and assembly process of the main reduction assembly parts and the interference of the bearing preload clearance are eliminated. On the basis of ensuring that the tooth side clearance and starting torque of the active and passive bevel gears can meet the preset requirements, the detection error is reduced, and the accuracy of the selection of pads is improved; S6: If the bottom surface of the bearing chamber of the left housing 101 is located outside the shell surface of the left housing, the left housing gasket thickness H is selected. 左 =A+C, if the bottom surface of the bearing chamber of the left housing is located within the shell surface of the left housing, then the thickness of the left housing gasket is H 左 =AC, if the bottom surface of the bearing chamber of the right housing is outside the shell surface of the right housing, then the thickness of the right housing gasket is H 右 =B+D, if the bottom surface of the bearing chamber of the right housing is located within the shell surface of the right housing, then the thickness of the left housing gasket is H 右 =BD; The padding selection should be calculated based on the relative position of the upper shell surface of the left and right housings and the bottom surface of the bearing chamber, as shown in the attached figure. Fig. 9 As shown, the bottom surface of the bearing chamber of the left housing is located outside the shell surface of the left housing, so the thickness H of the left housing gasket is calculated. 左 When adding the distance A and distance C, Fig.10 As shown, the bottom surface of the bearing chamber of the right housing is located outside the shell surface of the right housing, so the right housing gasket thickness H is calculated. 右 The distance B and the distance D should also be added together to ensure that the influence of the dimensional error on the left shell on the thickness of the selection pad is eliminated, thus ensuring the accuracy of the thickness of the selection pad; S7: Select the pad thickness H of the left shell calculated in step S6 左 Select the left gasket of corresponding thickness and measure the thickness of the left gasket. If the thickness of the left shell gasket H is calculated, 左If the thickness difference with the left gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified. According to the right shell pad thickness H calculated in step S6 右 Select the right gasket of corresponding thickness and measure the thickness of the right gasket. If the calculated thickness of the right shell gasket is H 右 If the thickness difference with the right gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified.

[0033] After calculating the selected gasket thickness, select the gasket of corresponding thickness and measure the selected gasket. If the error between the measured gasket thickness and the corresponding calculated selected gasket thickness does not exceed 0.05 mm, the selected gasket is qualified. Otherwise, if it does not meet the requirements, continue to select gaskets until they meet the requirements.

[0034] Wherein, step S2 specifically refers to: loosening the adjustment nut 7 in the left mounting flange 3 to the left, and screwing the adjustment nut 7 in the right mounting flange 5 to the left, so as to push the differential housing 200 to move to the left, and measure the tooth side clearance between the active bevel gear and the passive bevel gear, until the tooth side clearance between the active bevel gear and the passive bevel gear is reduced to zero. The differential housing 200 is pushed to move to the left by moving the adjustment nut 7 to the left, and the tooth side clearance of the primary and secondary bevel gears is adjusted to zero.

[0035] Wherein, step S3 specifically refers to: S31: First, loosen the adjusting nut 7 in the right mounting flange 5 to the right by N turns, and screw the adjusting nut 7 in the left mounting flange 3 to the right by N turns, push the differential housing 200 to move to the right, and then measure the tooth side clearance and starting torque of the active bevel gear 300 and the passive bevel gear 400, 1<N≤5; S32: Repeat step S31 until the tooth side clearance and starting torque of the passive bevel gear 400 and the active bevel gear 300 meet the preset requirements; S33: Tighten the positioning nut 8 in the left mounting flange 3 and the positioning nut 8 in the right mounting flange 5 respectively.

[0036] In the process of adjusting the tooth side clearance of the main bevel gear 300 and the auxiliary bevel gear 400 to the preset value, multiple adjustments are required. After each adjustment, the main bevel gear 300 is rotated with a torque wrench to measure the starting torque of the main bevel gear 300 and the auxiliary bevel gear 400 until the tooth side clearance and starting torque of the main bevel gear 300 and the auxiliary bevel gear 400 meet the preset requirements; after the tooth side clearance of the main bevel gear 300 and the auxiliary bevel gear 400 is adjusted into place, the positioning nut 8 is used to position the adjusting nut 7 in the left mounting flange 3 and the right mounting flange 5 to prevent the adjustment nut 7 from moving in the left and right mounting flanges, causing a reduction in the accuracy of subsequent measurement dimensions, thereby improving the accuracy and reliability of gasket selection.

[0037] The above is a complete description of the technical solutions of the embodiments of the present invention in conjunction with the accompanying drawings. It should be noted that the described embodiments are only part of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

Claims

1. The left and right housing gasket tooling of the loader axle main reducer assembly includes a left gasket tooling installed on the left side of the main reducer housing and a right gasket tooling installed on the right side of the main reducer housing, characterized in that: The left selection pad tooling includes a left mounting flange that fits with the left shell surface of the main reducer housing and a left adjustment component that is assembled in the left mounting flange and can move axially in the left mounting flange. The right selection pad tooling includes a right mounting flange that fits with the right shell surface of the main reducer housing and a right adjustment component that is assembled in the right mounting flange and can move axially in the right mounting flange. The inner end of the left adjustment component abuts against the outer end surface of the left bearing at the left end of the differential housing, and the inner end of the right adjustment component abuts against the outer end surface of the right bearing at the right end of the differential housing.

2. The left and right housing gasket selection tooling of the loader axle main reducer assembly according to claim 1 is characterized by: The inner end of the left mounting flange extends into the main reducer housing and is sleeved on the left bearing, the shell surface of the left mounting flange fits with the left shell surface, and the left mounting flange is positioned on the left housing by bolts and locating pins. The inner end of the right mounting flange extends into the main reducer housing and is sleeved on the right bearing, the shell surface of the right mounting flange fits with the right shell surface, and the right mounting flange is positioned on the right housing by bolts and locating pins.

3. The left and right housing gasket selection tooling of the loader axle main reducer assembly according to claim 2 is characterized by: The inner walls of the left mounting flange and the right mounting flange respectively have internal threads with the same pitch. The left adjustment assembly and the right adjustment assembly have the same structure, and both include an adjusting nut that matches the inner wall thread of the right mounting flange or the inner wall thread of the right mounting flange, and the inner end of the adjusting nut abuts against the outer end surface of the left bearing or the outer end surface of the right bearing.

4. The left and right housing gasket selection tooling of the loader axle main reducer assembly according to claim 3 is characterized by: The adjusting nut includes an external thread section that is threadably matched with the left mounting flange or the right mounting flange and a contact adjustment section that is coaxially aligned with the external thread section and integrally formed. The outer diameter of the contact adjustment section is smaller than the outer diameter of the external thread section, and the contact adjustment section abuts against the outer end face of the left bearing or the outer end face of the right bearing.

5. The left and right housing gasket selection tooling of the loader axle main reducer assembly according to claim 4 is characterized by: The left adjustment assembly and the right adjustment assembly both include a positioning nut which is threadedly mounted in the left mounting flange or the right mounting flange and axially presses the adjustment nut.

6. The left and right housing gasket selection tooling of the loader axle main reducer assembly according to claim 4 is characterized by: The adjusting nut and the positioning nut are both provided with matching through holes which can be matched with a wrench at the center.

7. A method for selecting pads for the left and right shells of a loader axle main reducer assembly, using the left and right shell selection pad tooling of a loader axle main reducer assembly as claimed in any one of claims 1 to 6 for selecting pads, characterized in that: The following steps are involved: S1: Install the left selection pad tooling on the left side of the main reducer housing, and install the right selection pad tooling on the right side of the main reducer housing; S2: Adjust the axial positions of the left adjustment assembly and the right adjustment assembly to push the differential housing to move leftward so that the tooth side clearance between the passive bevel gear on the differential housing and the active bevel gear on the main reducer is reduced to zero; S3: Adjust the axial positions of the left adjustment component and the right adjustment component, push the differential housing to move rightward to increase the tooth side clearance between the passive bevel gear and the active bevel gear, and measure the starting torque between the active bevel gear and the passive bevel gear until the tooth side clearance and the starting torque between the passive bevel gear and the active bevel gear meet the preset requirements; S4: Remove the left and right selection gasket tools from the main reducer casing, take the shell surface of the left mounting flange as the reference plane, measure the distance A between the shell surface of the left mounting flange and the inner end of the left adjustment component, take the shell surface of the right mounting flange as the reference plane, measure the distance B between the shell surface of the right mounting flange and the inner end of the right adjustment component, A and B are both average values ​​calculated after measuring multiple positions; S5: Taking the combined shell surface of the left housing as the reference plane, measure the distance C between the combined shell surface of the left housing and the bottom surface of the bearing chamber; taking the combined shell surface of the right housing as the reference plane, measure the distance D between the combined shell surface of the right housing and the bottom surface of the bearing chamber; C and D are both average values ​​calculated after measuring multiple positions; S6: If the bottom surface of the bearing chamber of the left housing is located outside the shell surface of the left housing, the left housing gasket thickness H 左 =A+C, if the bottom surface of the bearing chamber of the left housing is located within the shell surface of the left housing, then the thickness of the left housing gasket is H 左 =AC, if the bottom surface of the bearing chamber of the right housing is outside the shell surface of the right housing, then the thickness of the right housing gasket is H 右 =B+D, if the bottom surface of the bearing chamber of the right housing is located within the shell surface of the right housing, then the thickness of the left housing gasket is H 右 =BD; S7: Select the pad thickness H of the left shell calculated in step S6 左 Select the left gasket of corresponding thickness and measure the thickness of the left gasket. If the thickness of the left shell gasket H is calculated, 左 If the thickness difference with the left gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified. According to the right shell pad thickness H calculated in step S6 右 Select the right gasket of corresponding thickness and measure the thickness of the right gasket. If the calculated thickness of the right shell gasket is H 右 If the thickness difference with the right gasket does not exceed 0.05 mm, it means that the selected gasket is qualified. Otherwise, if it is unqualified, continue to select gaskets until it is qualified.

8. The method for selecting the left and right housings of the loader axle main reducer assembly according to claim 7 is characterized in that: Step S2 specifically refers to: loosening the adjusting nut in the left mounting flange to the left, and screwing the adjusting nut in the right mounting flange to the left to push the differential housing to move to the left, and measuring the tooth side clearance between the active bevel gear and the passive bevel gear until the tooth side clearance between the active bevel gear and the passive bevel gear is reduced to zero.

9. The method for selecting the left and right housings of the loader axle main reducer assembly according to claim 7, characterized in that: Step S3 specifically refers to: S31: First, loosen the adjusting nut in the right mounting flange to the right by N turns, and tighten the adjusting nut in the left mounting flange to the right by N turns, push the differential housing to move to the right, and then measure the tooth side clearance and starting torque of the active bevel gear and the passive bevel gear, 1<N≤5; S32: Repeat step S31 until the tooth side clearance and starting torque of the passive bevel gear and the active bevel gear meet the preset requirements; S33: Tighten the locating nuts in the left mounting flange and the locating nuts in the right mounting flange respectively.

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