Axle box shaft end face tooth symmetry degree detector

Abstract

The utility model discloses a gap bridge box shaft end face tooth symmetry degree detector comprising the following structures: push plate seats which are in an arc-shaped plate-shaped structure and are arranged in a bilateral symmetry manner along the symmetry plane, and the outer edges of the push plate seats can be flush with the outer edge of a flange of a gap bridge box shaft; the two cylindrical push rods are respectively arranged on the bottom end surface of the push plate seat; the cross section of the strip-shaped protrusion is in an arc shape, and the strip-shaped protrusion is arranged on the bottom end face of the push plate base. The dial indicator clamp is rod-shaped, and one end of the dial indicator clamp is connected with the outer edge of the push plate seat; and the dial indicator is arranged at the other end of the dial indicator clamp and comprises a measuring contact, and the measuring contact is positioned below the push plate seat. The technical problems existing in the prior art are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts production and manufacturing, in particular to a gear symmetry detector for the end face of a bridge box shaft. Background Art

[0002] like Figure 1 and Figure 2 As shown, the heavy-duty vehicle bridge box shaft with end face teeth needs to process two sets of teeth with an angle of 70 degrees to each other on the end face of its flange. Each set of teeth has 9 equidistant tooth grooves, and the two separated parts of each set of teeth are symmetrically distributed along the central axis of the bridge box shaft. When testing the symmetry, special equipment (triangulation coordinate detector) is usually used for testing, which is less efficient.

[0003] There are also improvements on the existing technology, such as the Chinese invention patent with authorization announcement number CN102109316B and patent name "Axis Transmission Box Shaft End Face Tooth Symmetry Detector", which includes a push plate seat, a dial indicator clamp and a dial indicator; a pair of supporting feet and a pair of ball head push pins are arranged on the bottom end face of the push plate seat, the supporting feet are located at the front of the bottom end face and are symmetrically arranged along the central axis of the push plate seat, and the ball head push pins are located at the rear of the bottom end face and are symmetrically arranged along the central axis of the push plate seat; the dial indicator clamp is rod-shaped, one end of the dial indicator clamp is connected to the rear of the push plate seat, and the other end of the dial indicator clamp is provided with a dial indicator, the measuring contact of the dial indicator is located below the dial indicator clamp and the measuring contact is parallel to the axis of the dial indicator clamp. The present invention has a compact structure, simple manufacturing and low cost. By converting the measuring reference and the measured surface, that is, taking the machined end face teeth as the measuring reference and the outer circle of the workpiece axis as the measured surface, complex measurements become simple and intuitive, which is suitable for large-scale product testing.

[0004] The comparative document has the following technical problems: the push plate seat cannot be quickly placed in the appropriate position, which may cause the detector to slide a long distance along the tooth groove for the dial indicator to indicate the maximum value; when the symmetry detector is in use, the bridge box shaft being tested is set in the vertical direction. The tester must not only ensure that the bridge box shaft is always set in the vertical direction during the test, but also ensure that the detector moves in line with the tooth groove, and observe the value of the dial indicator in time, which makes it difficult to achieve single-person operation. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a bridge box shaft end face tooth symmetry detector to solve the technical problems existing in the prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a bridge box shaft end face tooth symmetry detector, comprising:

[0007] A push plate seat, the push plate seat is an arc-shaped plate-like structure, the push plate seat is arranged symmetrically along its symmetry plane, and the outer edge of the push plate seat can be flush with the outer edge of the flange of the bridge box shaft;

[0008] Two cylindrical push rods, the two push rods are respectively arranged on the bottom end surface of the push plate seat, the central axes of the two push rods coincide, the central axes of the push rods are perpendicular to the symmetry plane of the push plate seat, the two push rods are symmetrically arranged along the symmetry plane of the push plate seat, and the two push rods are respectively matched with the outermost tooth grooves in each group of teeth;

[0009] A strip-shaped protrusion, the cross section of which is an arc shape, the strip-shaped protrusion is arranged on the bottom end surface of the push plate seat, the central axis of the strip-shaped protrusion is perpendicular to the symmetry plane of the push plate seat, the strip-shaped protrusion is located on one side of the central axis of the push plate seat, and the two push rods are located on the other side of the central axis of the push plate seat;

[0010] A dial indicator clamp, wherein the dial indicator clamp is rod-shaped, one end of the dial indicator clamp is connected to the outer edge of the push plate seat, the central axis of the dial indicator clamp coincides with the symmetry plane of the push plate seat, the strip-shaped protrusion is close to the dial indicator clamp, and the push rod is far away from the dial indicator clamp;

[0011] A dial indicator is arranged at the other end of the dial indicator clamp, and the dial indicator includes a measuring contact, and the measuring contact is located below the push plate seat, the central axis of the measuring contact coincides with the symmetry plane of the push plate seat, and the central axis of the measuring contact is parallel to the top end face of the push plate seat.

[0012] Furthermore, the inner edge of the push plate seat is provided with two first through grooves, the opposite ends of the two first through grooves respectively pass through the top end surface and the bottom end surface of the push plate seat, the two first through grooves are symmetrical with respect to the symmetry plane of the push plate seat, and the first through grooves are located between the push rod and the strip-shaped protrusion.

[0013] Furthermore, the ends of the two push rods that are close to each other are exposed on the inner side of the push plate seat.

[0014] Furthermore, the dial indicator clamp is fixed to the push plate seat by welding.

[0015] Furthermore, the dial indicator clamp is connected to the push plate seat by bolts.

[0016] Furthermore, the inner edge of the push plate seat is provided with a plurality of second through grooves, the opposite ends of the second through grooves respectively penetrate the top end surface and the bottom end surface of the push plate seat, and the plurality of second through grooves are respectively arranged between the first through groove and the strip-shaped protrusion.

[0017] Furthermore, the number of the second through grooves is 3, and the three second through grooves are respectively located on the same side of the symmetry plane of the push plate seat.

[0018] Furthermore, the dial indicator and the dial indicator clamp are connected by bolts.

[0019] The beneficial effects of the utility model are:

[0020] When the utility model is in use, the bridge box shaft to be tested is set in the vertical direction, and the end with the end face teeth is facing upwards, the tester places the push plate seat above the end face teeth, and respectively puts the two push rods into the outermost tooth grooves of a tooth group, and the outer edge of the push plate seat is flush with the outer edge of the bridge box shaft flange. At this time, the value displayed by the dial indicator is very close to the maximum value to be tested. The four fingers of the two hands of a tester except the thumb operate the opposite ends of the flange conical surface, so as to ensure that during the testing process, the bridge box shaft is always set in the vertical direction and will not shake, which ensures the accuracy of the test results to a certain extent. The thumbs of the two hands of the same tester press on the radial direction of the push plate seat. The thumbs are pressed at opposite ends and between the push rod and the strip-shaped protrusion. Through the operation of the two thumbs, the push plate seat can be fitted against the tooth groove and reciprocated along the tooth groove direction. During the reciprocating movement, the measuring contact is always in contact with the outer edge of the end face of the bridge box shaft being tested. The maximum number of the dial indicator is read, the utility model is rotated 180 degrees, and the two push rods are placed in the other outermost tooth groove of the same tooth group. The above operation is repeated, and the maximum value read by the dial indicator in the two operations is calculated, and the symmetry of the two parts of the tooth group separated along the central axis of the bridge box shaft can be calculated. The above method is used for detection. During the detection process, the detection personnel can always face the dial indicator, which is convenient for reading the dial indicator. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 It is a schematic diagram of the structure of the end face gear of the bridge box shaft in the prior art;

[0023] Figure 2 for Figure 1 Cross-section view in the AA direction;

[0024] Figure 3 This is the overall structure diagram of a bridge box shaft end face gear symmetry detector of the utility model;

[0025] Figure 4 It is a schematic plan view of a bridge box shaft end face gear symmetry detector of the utility model;

[0026] Figure 5 This is the overall structure diagram of another angle of the bridge box shaft end face gear symmetry detector of the utility model.

[0027] In the figure, 1, push plate seat; 2, push rod; 3, dial indicator clamp; 4, dial indicator; 5, measuring contact; 6, strip-shaped protrusion; 7, second through groove; 8, first through groove. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1 -Attached Figure 5 , the technical solutions in the embodiments of the present application are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0029] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0030] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] The utility model provides a bridge box shaft end face tooth symmetry detector, comprising: a push plate seat 1, the push plate seat 1 is an arc-shaped plate-like structure, the push plate seat 1 is symmetrically arranged along its symmetry plane, and the outer edge of the push plate seat 1 can be flush with the flange outer edge of the bridge box shaft; two cylindrical push rods 2, the two push rods 2 are respectively arranged on the bottom end surface of the push plate seat 1, the central axes of the two push rods 2 coincide, the central axes of the push rods 2 are perpendicular to the symmetry plane of the push plate seat 1, the two push rods 2 are symmetrically arranged along the symmetry plane of the push plate seat 1, and the two push rods 2 are respectively matched with the outermost tooth grooves in each group of teeth; a strip protrusion 6, the cross section of the strip protrusion 6 is an arc, the strip protrusion 6 is arranged on the bottom end surface of the push plate seat 1, and the strip protrusion The center axis of dial gauge 6 is perpendicular to the symmetry plane of push plate seat 1, the strip-shaped protrusion 6 is located on one side of the center axis of push plate seat 1, and the two push rods 2 are located on the other side of the center axis of push plate seat 1; the dial gauge clamp 3, the dial gauge clamp 3 is rod-shaped, one end of the dial gauge clamp 3 is connected to the outer edge of the push plate seat 1, the center axis of the dial gauge clamp 3 coincides with the symmetry plane of the push plate seat 1, the strip-shaped protrusion 6 is close to the dial gauge clamp 3, and the push rod 2 is away from the dial gauge clamp 3; the dial gauge 4, the dial gauge 4 is arranged at the other end of the dial gauge clamp 3, the dial gauge 4 includes a measuring contact 5, the measuring contact 5 is located below the push plate seat 1, the center axis of the measuring contact 5 coincides with the symmetry plane of the push plate seat 1, and the center axis of the measuring contact 5 is parallel to the top end face of the push plate seat 1. In a specific embodiment, the specific structure of the tooth groove is as follows Figure 2 As shown, the opposite sides of the tooth groove are respectively fitted with the outer circumferential surface of the push rod 2, and part of the push rod 2 is exposed outside the tooth groove. The exposed part of the push rod 2 and the strip-shaped protrusion 6 are at the same height, thereby ensuring that the push plate seat 1 is always parallel to the end face of the flange during the reciprocating movement.

[0034] When the utility model is in use, the bridge box shaft to be tested is set in the vertical direction, and the end with the end face tooth is facing upwards, the tester places the push plate seat 1 above the end face tooth, and puts the two push rods 2 into the outermost tooth groove of a tooth group respectively, and the outer edge of the push plate seat 1 is flush with the outer edge of the bridge box shaft flange. At this time, the value displayed by the dial indicator 4 is very close to the maximum value to be tested. The four fingers of the two hands of a tester except the thumb operate the opposite ends of the flange conical surface, so as to ensure that during the testing process, the bridge box shaft is always set in the vertical direction and will not shake, which ensures the accuracy of the test results to a certain extent. The thumbs of the two hands of the same tester press on the radially opposite ends of the push plate seat 1. For both ends, the pressing position of the thumb should be between the push rod 2 and the strip protrusion 6. Through the operation of the two thumbs, the push plate seat 1 can be fitted against the tooth groove and reciprocated along the tooth groove direction. During the reciprocating movement, the measuring contact 5 is always in contact with the outer edge of the end face of the bridge box shaft being tested. The maximum number of the dial indicator 4 is read, and the utility model is rotated 180 degrees. The two push rods 2 are placed in the other outermost tooth groove of the same tooth group, and the above operation is repeated. The maximum value read by the dial indicator 4 in the two operations is calculated, and the symmetry of the two separated parts of the tooth group along the central axis of the bridge box shaft can be calculated. The detection is carried out in the above manner. During the detection process, the detection personnel can always face the dial indicator 4, which is convenient for reading the dial indicator 4.

[0035] In order to make it more convenient for the inspector to realize the reciprocating movement of the push plate seat 1 through the two thumbs, the further improvement of the utility model is that two first through grooves 8 are provided on the inner edge of the push plate seat 1, and the opposite ends of the two first through grooves 8 respectively penetrate the top end face and the bottom end face of the push plate seat 1, and the two first through grooves 8 are symmetrical about the symmetric plane of the push plate seat 1, and the first through grooves 8 are located between the push rod 2 and the strip-shaped protrusion 6. When the inspector operates the push plate seat 1, the heads of the two thumbs can be respectively inserted into the two first through grooves 8, and the joints of the thumbs can be fully utilized to realize the reciprocating movement of the push plate seat 1, which is convenient for the inspector to operate the push plate seat 1 through the thumbs.

[0036] In order to quickly realize the positioning of the push rods 2 and the tooth grooves, the further improvement of the utility model is that the ends of the two push rods 2 close to each other are exposed on the inner side of the push plate seat 1. The ends of the two push rods 2 close to each other are exposed on the inner side of the push plate seat 1, which facilitates the observation of the positional relationship between the push rods 2 and the tooth grooves by naked eyes, so that the two push rods 2 can be quickly placed in the correct tooth grooves.

[0037] The dial gauge clamp 3 is welded and fixed to the push plate seat 1. In other embodiments, the dial gauge clamp 3 and the push plate seat 1 can also be connected by bolts.

[0038] The inner edge of the push plate seat 1 is provided with a plurality of second through slots 7, the opposite ends of the second through slots 7 respectively penetrate the top end surface and the bottom end surface of the push plate seat 1, and the plurality of second through slots 7 are respectively provided between the first through slots 8 and the strip-shaped protrusions 6. In the specific embodiment, the size of the second through slots 7 is determined according to the size of an adult's finger, so that it is convenient for the inspector to grasp the push plate seat 1 through the second through slots 7, and then it is convenient for the inspector to directly pick up the utility model as a whole with one hand without the assistance of another inspector.

[0039] The number of the second through slots 7 is 3, and the three second through slots 7 are respectively located on the same side of the symmetric plane of the push plate seat 1. The three second through slots 7 are respectively arranged on the same side of the symmetric plane of the push plate seat so that the inspector can avoid the dial indicator 4 when grasping the push plate seat 1.

[0040] The dial indicator 4 and the dial indicator clamp 3 are connected by bolts.

[0041] The above description is only a preferred embodiment of the present application, and does not limit the patent scope of the present application. All equivalent structural changes made by using the contents of the present application specification and drawings under the inventive concept of the present application, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present application.

Claims

1. A bridge box shaft end face gear symmetry detector, characterized in that: include: A push plate seat, the push plate seat is an arc-shaped plate-like structure, the push plate seat is arranged symmetrically along its symmetry plane, and the outer edge of the push plate seat can be flush with the outer edge of the flange of the bridge box shaft; Two cylindrical push rods, the two push rods are respectively arranged on the bottom end surface of the push plate seat, the central axes of the two push rods coincide, the central axes of the push rods are perpendicular to the symmetry plane of the push plate seat, the two push rods are symmetrically arranged along the symmetry plane of the push plate seat, and the two push rods are respectively matched with the outermost tooth grooves in each group of teeth; A strip-shaped protrusion, the cross section of which is an arc shape, the strip-shaped protrusion is arranged on the bottom end surface of the push plate seat, the central axis of the strip-shaped protrusion is perpendicular to the symmetry plane of the push plate seat, the strip-shaped protrusion is located on one side of the central axis of the push plate seat, and the two push rods are located on the other side of the central axis of the push plate seat; A dial indicator clamp, wherein the dial indicator clamp is rod-shaped, one end of the dial indicator clamp is connected to the outer edge of the push plate seat, the central axis of the dial indicator clamp coincides with the symmetry plane of the push plate seat, the strip-shaped protrusion is close to the dial indicator clamp, and the push rod is far away from the dial indicator clamp; A dial indicator is arranged at the other end of the dial indicator clamp, and the dial indicator includes a measuring contact, and the measuring contact is located below the push plate seat, the central axis of the measuring contact coincides with the symmetry plane of the push plate seat, and the central axis of the measuring contact is parallel to the top end face of the push plate seat.

2. The bridge box shaft end face gear symmetry detector according to claim 1, characterized in that: The inner edge of the push plate seat is provided with two first through grooves, and the opposite ends of the two first through grooves respectively pass through the top end surface and the bottom end surface of the push plate seat, and the two first through grooves are symmetrical with respect to the symmetry plane of the push plate seat, and the first through grooves are located between the push rod and the strip-shaped protrusion.

3. The bridge box shaft end face tooth symmetry detector according to claim 1, characterized in that: One end of the two push rods close to each other is exposed on the inner side of the push plate seat.

4. The bridge box shaft end face gear symmetry detector according to claim 1, characterized in that: The dial indicator clamp is welded and fixed to the push plate seat.

5. The bridge box shaft end face gear symmetry detector according to claim 1, characterized in that: The dial indicator clamp is connected to the push plate seat via bolts.

6. The bridge box shaft end face gear symmetry detector according to claim 2, characterized in that: The inner edge of the push plate seat is provided with a plurality of second through grooves, the opposite ends of the second through grooves respectively penetrate the top end surface and the bottom end surface of the push plate seat, and the plurality of second through grooves are respectively arranged between the first through groove and the strip-shaped protrusion.

7. The bridge box shaft end face gear symmetry detector according to claim 6, characterized in that: The number of the second through slots is 3, and the three second through slots are respectively located on the same side of the symmetry plane of the push plate seat.

8. The bridge box shaft end face gear symmetry detector according to claim 1, characterized in that: The dial indicator and the dial indicator clamp are connected by bolts.

Images