Accurate measuring device for mounting distance of main speed reducer shell

Abstract

The utility model discloses a device for accurately measuring the installation distance of a main speed reducer shell, which comprises a main body, a left arm is arranged on the left side of the upper end of the main body, a right arm is arranged on the right side of the upper end of the main body, a centering rod is inserted and installed in the middle of the main body, and a dial indicator is installed at the upper end of the centering rod; a support is fixedly installed on one side of the main body, an adjusting rod is movably installed on the support, a gear is in key connection with the bottom end of the adjusting rod, a copper sleeve is fixedly installed at the bottom of the main body, a balance rod is movably installed in the copper sleeve, and teeth are arranged on one side of the middle of the balance rod and connected with the gear in a meshed mode. According to the utility model, the installation distance deviation of the main reducer shell is converted into the reading of the dial indicator through the lever principle, thereby ensuring direct and rapid measurement; quick verification is carried out; the accuracy of the measuring device is realized; the three-coordinate detection quantity is reduced, and the transfer and measurement time is saved; and measurement and assembly of various types of main reducer assemblies can be completed.

Description

Technical Field

[0001] The utility model relates to the technical field of accurate measurement, in particular to a device for accurately measuring the installation distance of a main reducer housing. Background Art

[0002] The axle housing is the base for installing the main reducer, differential, half-axle and wheel assembly. Its main function is to support and protect the main reducer, differential and half-axle. Generally speaking, the axle housing of an ordinary non-disconnecting drive axle is a rigid hollow beam supported on the left and right drive wheels. The main reducer, differential, half-axle and other transmission parts are installed in it. The axle housing is connected to the frame or carriage through a longitudinal leaf spring. It is an important component of the drive axle and one of the main components of the running system. The drive axle housing should have sufficient strength and rigidity, small mass, and be easy to disassemble and adjust the main reducer. The drive axle housing can be divided into three types from the structural point of view: integral axle housing, separable axle housing and combined axle housing.

[0003] The meshing spots of the main and passive gears of the heavy truck axle main reducer assembly need to be selected through measurement and calculation (i.e., the gasket thickness X=K0+L1-Z, K0--the factory installation distance dimension marked on the active bevel gear shaft head, L1--the dimension from the active bevel gear bearing end face to the pinion housing flange face is called the margin, Z=138.5+H, H-actual measurement deviation value, the process requirements are as shown in the figure: the main reducer housing assembly needs to measure the value of the installation distance Z from the upper end face to the 2-φ110 center hole. Originally, each piece needed to be measured on the three-coordinate to achieve this. The measurement on the three-coordinate needed to be transported to the measuring room, and the transportation time was long, resulting in a large workload for three-coordinate detection, difficulty in implementation, and a long detection and assembly cycle. The assembly efficiency is low and the cost is high. Utility Model Content

[0004] The purpose of the utility model is to provide a device for accurately measuring the installation distance of a main reducer housing, which has the advantages of converting the installation distance deviation of the main reducer housing into a micrometer reading through the lever principle, ensuring direct and rapid measurement; rapid verification; achieving the accuracy of the measuring device; reducing the number of three-coordinate detection quantities and saving transportation and measurement time; and being able to complete the measurement and assembly of multiple varieties of main reducer assemblies, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A device for accurately measuring the installation distance of a main reducer housing comprises a main body, a left arm is arranged on the left side of the upper end of the main body, a right arm is arranged on the right side of the upper end of the main body, a centering rod is inserted and installed in the middle of the main body, and a micrometer is installed on the upper end of the centering rod;

[0007] A bracket is fixedly installed on one side of the main body, an adjusting rod is movably installed on the bracket, the bottom end of the adjusting rod is keyed to a gear, a copper sleeve is fixedly installed on the bottom of the main body, a balancing rod is movably installed inside the copper sleeve, teeth are provided on one side of the middle part of the balancing rod, and the teeth are meshed with the gear.

[0008] Preferably, a fixed support block is sleeved on the bottom of the left arm and the right arm, and the fixed support block is arranged in a U shape.

[0009] Preferably, the fixed support block is fixedly mounted on the bottom surfaces of the left arm and the right arm by two first rivets.

[0010] Preferably, the bracket is fixedly mounted on one side of the main body by a plurality of second rivets.

[0011] Preferably, a gripping hole is provided on the right arm.

[0012] Preferably, a stopper is movably mounted on one side of the bottom of the main body via a movable pin.

[0013] Preferably, a knob is fixedly provided on the top end of the adjusting rod, and the knob is arranged on the upper part of the bracket.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model achieves online measurement and assembly, simplifies the measurement method, and can select and calculate the gasket to be assembled in place after one measurement, thus saving transportation and measurement time. Through the use of the measuring device, the assembly requirements can be met, the assembly adjustment time can be reduced, and the tedious rework operation can be eliminated. The measuring device converts the installation distance deviation of the main reducer housing into a micrometer reading through the lever principle, thus ensuring direct and rapid measurement. The standard calibration device quickly verifies the measuring device, thus achieving the accuracy of the measuring device, reducing the number of three-coordinate detection quantities and saving transportation and measurement time. The measurement and assembly of various main reducer assemblies can be completed. Moreover, the adjustment rod can be rotated through the knob, so that the gears can mesh with the connecting teeth, thus achieving balanced adjustment of stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the utility model;

[0017] Figure 2 It is a rear view schematic diagram of the utility model;

[0018] Figure 3 It is a partial bottom view schematic diagram of the utility model.

[0019] In the figure: 1. main body; 2. left arm; 3. right arm; 4. centering rod; 5. micrometer; 6. bracket; 7. knob; 8. adjusting rod; 9. copper sleeve; 10. gear; 11. balance rod; 12. teeth; 13. fixed support block; 14. first rivet; 15. second rivet; 16. holding hole; 17. stopper; 18. movable pin. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] A device for accurately measuring the installation distance of a main reducer housing comprises a main body 1, a left arm 2 is provided on the left side of the upper end of the main body 1, a right arm 3 is provided on the right side of the upper end of the main body 1, a centering rod 4 is inserted and installed in the middle of the main body 1, and a micrometer 5 is installed on the upper end of the centering rod 4;

[0023] A bracket 6 is fixedly installed on one side of the main body 1, and an adjusting rod 8 is movably installed on the bracket 6. The bottom end of the adjusting rod 8 is keyed to a gear 10. A copper sleeve 9 is fixedly installed on the bottom of the main body 1, and a balance rod 11 is movably installed inside the copper sleeve 9. A tooth 12 is provided on one side of the middle part of the balance rod 11, and the tooth 12 is meshed with the gear 10.

[0024] In order to enable the main body 1 to be placed on the main reducer housing and maintain stability, in this embodiment, preferably, the bottoms of the left arm 2 and the right arm 3 are sleeved with a fixed support block 13, and the fixed support block 13 is configured to be U-shaped.

[0025] In order to achieve fixed installation of the fixed support block 13 and maintain the stability of the fixed support block 13 to facilitate maintaining balance stability, in this embodiment, preferably, the fixed support block 13 is fixedly installed on the bottom surfaces of the left arm 2 and the right arm 3 by two first rivets 14.

[0026] In order to achieve fixed installation of the bracket 6 and facilitate the bracket 6 to install the adjustment rod 8, in this embodiment, preferably, the bracket 6 is fixedly installed on one side of the main body 1 through a plurality of second rivets 15.

[0027] In order to hold the main body 1 , in this embodiment, preferably, a holding hole 16 is provided on the right arm 3 .

[0028] In order to achieve auxiliary use of the equipment and maintain balance and protection, in this embodiment, preferably, a stopper 17 is movably installed on one side of the bottom of the main body 1 through a movable pin 18.

[0029] In order to realize the rotation of the adjusting rod 8 and facilitate the rotation of the adjusting rod 8 , in the present embodiment, preferably, a knob 7 is fixedly provided on the top end of the adjusting rod 8 , and the knob 7 is arranged on the upper part of the bracket 6 .

[0030] Working principle: Through this application, online measurement and assembly are achieved, and the measurement method is simplified, so that the main reducer housing can be measured once and the calculated gasket can be selected and assembled in place, saving transportation and measurement time; through the use of the measuring device, the assembly requirements can be met, the assembly adjustment time can be reduced, and the tedious rework operations can be eliminated; the measuring device converts the installation distance deviation of the main reducer housing into the reading of the micrometer 5 through the lever principle to ensure direct and fast measurement; the standard calibration device quickly calibrates the measuring device; the accuracy of the measuring device is achieved; the number of three-coordinate detection quantities is reduced and the transportation and measurement time is saved; the measurement and assembly of multiple varieties of main reducer assemblies can be completed; and the adjustment rod 8 is rotated through the knob 7 so that the gear 10 can mesh with the connecting tooth 12 to achieve balanced adjustment of stability;

[0031] That is, the left arm 2 and the right arm 3 at both ends of the main body 1 are placed on the upper end surface of the large hole of the main reducer housing for positioning, and are padded by a fixed support block 13. At this time, by turning the knob 7, the adjusting rod 8 can drive the teeth 12 on the balance rod 11 to rotate through the gear 10, so that the main body 1 can maintain balance, and then the centering rod 4 in the middle is used to align the symmetry center of the hole through the positioning pin, and the compressed displacement of the head is transmitted to the centering rod 4 in a 1:1 ratio through the principle of equidistant levers, driving the micrometer 5 to read the deviation value, so as to realize the precise measurement of the installation distance of the main reducer housing.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for accurately measuring the installation distance of a main reducer housing, comprising a main body (1), characterized in that: A left arm (2) is provided on the left side of the upper end of the main body (1), a right arm (3) is provided on the right side of the upper end of the main body (1), a centering rod (4) is inserted and installed in the middle of the main body (1), and a micrometer (5) is installed on the upper end of the centering rod (4); A bracket (6) is fixedly mounted on one side of the main body (1), an adjusting rod (8) is movably mounted on the bracket (6), a gear (10) is keyed to the bottom end of the adjusting rod (8), a copper sleeve (9) is fixedly mounted on the bottom of the main body (1), a balancing rod (11) is movably mounted inside the copper sleeve (9), a tooth (12) is provided on one side of the middle of the balancing rod (11), and the tooth (12) is meshingly connected with the gear (10).

2. The device for accurately measuring the installation distance of a main reducer housing according to claim 1, characterized in that: A fixed support block (13) is sleeved on the bottom of the left arm (2) and the right arm (3), and the fixed support block (13) is arranged in a U shape.

3. The device for accurately measuring the installation distance of a main reducer housing according to claim 2, characterized in that: The fixed support block (13) is fixedly mounted on the bottom surfaces of the left arm (2) and the right arm (3) via two first rivets (14).

4. The device for accurately measuring the installation distance of a main reducer housing according to claim 1, characterized in that: The bracket (6) is fixedly mounted on one side of the main body (1) via a plurality of second rivets (15).

5. The device for accurately measuring the installation distance of a main reducer housing according to claim 1, characterized in that: The right arm (3) is provided with a gripping hole (16).

6. The device for accurately measuring the installation distance of a main reducer housing according to claim 1, characterized in that: A stopper (17) is movably mounted on one side of the bottom of the main body (1) via a movable pin (18).

7. The device for accurately measuring the installation distance of a main reducer housing according to claim 1, characterized in that: A knob (7) is fixedly provided at the top end of the adjusting rod (8), and the knob (7) is arranged on the upper part of the bracket (6).

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