Gear hardness detection device

Abstract

The utility model belongs to the technical field of gear hardness detection, and particularly relates to a gear hardness detection device, which comprises a base and a hardness detection device, a stand column is fixedly connected onto the base, the hardness detection device is movably mounted on the stand column and is driven by a driving mechanism to ascend and descend, and the gear hardness detection device further comprises an objective table for placing a gear to be detected. The objective table is located below the hardness detection device, a limiting ring is coaxially arranged on the periphery of the objective table, and the limiting ring is connected to the base through a telescopic column. When the gear hardness detection device is used, a to-be-detected gear is placed on the objective table, the limiting ring is coaxially arranged on the periphery of the objective table and surrounds the periphery of the to-be-detected gear, the limiting ring can limit movement of the to-be-detected gear to a certain extent, and after detection is completed, the bottom of the limiting ring is connected with the telescopic column which can stretch out and draw back. The limiting ring can be pressed down, so that the gear to be detected is exposed in the air, and the gear to be detected can be taken away from the objective table conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of gear hardness detection, and in particular relates to a gear hardness detection device. Background Art

[0002] Gears refer to mechanical components with gears on the wheel rim that continuously mesh to transmit motion and power. After the gears are processed, a certain number of gears need to be sampled for hardness testing, usually by directly tapping and observing the changes in the gears from the surface. Or a desktop hardness tester can be used for measurement.

[0003] In the utility model patent with the patent publication number CN216900036U, a gear hardness detection device for mechanical processing is provided. By starting the output shaft of the motor to rotate forward, the rotating shaft is driven to rotate forward, which causes the L-shaped rack to move downward and the pressure block to move downward to detect the hardness of the gear. When the gear hardness detection is completed, the output shaft of the starting motor is reversed to drive the rotating shaft to reverse, which causes the L-shaped rack to move upward and the pressure block to move upward to reset and disengage from the gear. However, there are also problems due to the structural setting. The gear is placed in the groove of the stage, and the inner wall of the groove is also provided with a tooth groove to prevent the gear from rotating in the groove, which can play a good fixing role. Since the surface of the gear is relatively smooth, the gear placed in the groove of the stage is not easy to apply force. At the same time, due to the circumferential limitation of the tooth groove, it is not convenient to take it out of the groove of the stage. For this reason, an improved gear hardness detection device is designed. Utility Model Content

[0004] In view of the above-mentioned deficiencies existing in the prior art, the utility model provides a gear hardness detection device to solve the above-mentioned problems in the background technology.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A gear hardness detection device comprises a base and a hardness detection device, wherein the base is fixedly connected to a column, the hardness detection device is movably mounted on the column and is lifted and lowered under the drive of a driving mechanism, and further comprises a stage for placing the gear to be tested, the stage being located below the hardness detection device, a limiting ring being coaxially arranged on the outer periphery of the stage, and the limiting ring being connected to the base via a telescopic column.

[0007] By adopting the above-mentioned structural design, when the gear hardness detection device is in use, the gear to be tested is placed on the stage. Since a limit ring is coaxially arranged on the outer periphery of the stage, the limit ring surrounds the outer periphery of the gear to be tested, and the limit ring can limit the movement of the gear to be tested to a certain extent. Driven by the driving mechanism, the hardness detection device moves downward along the column and contacts the gear to be tested for testing. After the test is completed, a retractable telescopic column is connected to the bottom of the limit ring, and the limit ring can be pressed down to expose the gear to be tested in the air, so that the gear to be tested is conveniently removed from the stage.

[0008] Furthermore, the inner wall of the limiting ring is provided with a tooth groove, and in an initial state, the bottom of the limiting ring is flush with the top of the loading platform, and a positioning boss is provided at the center of the loading platform.

[0009] By adopting the above-mentioned structural design, the inner wall of the limit ring is provided with a tooth groove, and the center of the stage is provided with a positioning boss. The gear to be tested can be aligned with the positioning boss and placed on the circular stage. At the same time, the teeth of the gear to be tested can be correspondingly extended into the tooth grooves on the inner wall of the limit ring, thereby limiting the rotation of the gear to be tested for detection by the hardness detection device.

[0010] Furthermore, the telescopic column comprises an outer tube and an inner rod, the inner rod is movably arranged inside the outer tube, a reset member is arranged between the inner rod and the bottom of the outer tube, the upper end of the inner rod is fixedly connected to the limit ring, and the outer tube is fixedly connected to the base. The reset member is a spring.

[0011] By adopting the above structural design, the outer cylinder at the bottom of the telescopic column is connected to the base, a spring is arranged inside the outer cylinder, and the inner rod is arranged in the outer cylinder and supported by the spring.

[0012] Further, the hardness detection device comprises:

[0013] A housing, the back of which is provided with a sleeve, the sleeve is sleeved on a column, and the bottom of the housing is connected with a detection head;

[0014] The back of the shell is provided with an installation cavity for installing the driving mechanism, and a central axis is provided in the installation cavity.

[0015] Furthermore, the driving mechanism comprises:

[0016] A driving gear, the driving gear is located in the mounting cavity and is rotatably connected to the central shaft;

[0017] A rotating wheel, the rotating wheel is located outside the housing and is coaxially fixedly connected to the driving gear via a connecting shaft;

[0018] The rack plate is vertically fixedly connected to the column, and the driving gear is meshingly connected with the rack plate.

[0019] By adopting the above structure, the hardness detection device is movably connected to the column, and its lifting and lowering movement is driven by the driving mechanism. Specifically, the rotating wheel can be rotated. Since the rotating wheel is coaxially fixedly connected with the driving gear through the connecting shaft, the rotation of the rotating wheel drives the driving gear to rotate. The driving gear is meshed and connected to the rack plate. The driving gear moves along the rack plate to drive the housing to move, and then drives the detection head to move. The detection head contacts and squeezes the gear to be tested. If the quality of the gear to be tested is unqualified, the detection head squeezes the gear to be tested, and there will be cracks on the surface of the gear to be tested. After the gear to be tested is tested, the limit ring is pressed downward to expose the gear to be tested in the air, so that the gear to be tested is conveniently removed from the stage.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. When the gear hardness testing device is in use, the gear to be tested is placed on the stage. Since a limit ring is coaxially arranged on the outer periphery of the stage, the limit ring surrounds the outer periphery of the gear to be tested, and the limit ring can limit the movement of the gear to be tested to a certain extent. Driven by the driving mechanism, the hardness testing device moves downward along the column and contacts the gear to be tested for testing. After the test is completed, a retractable telescopic column is connected to the bottom of the limit ring, and the limit ring can be pressed to expose the gear to be tested in the air, so that the gear to be tested can be taken away from the stage conveniently;

[0022] 2. The inner wall of the limit ring is provided with a tooth groove, and the center of the stage is provided with a positioning boss. The gear to be tested can be aligned with the positioning boss and placed on the circular stage. At the same time, the teeth of the gear to be tested can be correspondingly extended into the tooth groove of the inner wall of the limit ring, thereby limiting the rotation of the gear to be tested for detection by the hardness detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of a gear hardness detection device of the utility model (viewing angle 1);

[0024] Figure 2 This is a three-dimensional structural schematic diagram of an embodiment of a gear hardness detection device of the utility model (viewing angle 2);

[0025] Figure 3 It is a three-dimensional structural schematic diagram of a hardness detection device in an embodiment of a gear hardness detection device of the utility model;

[0026] Figure 4 It is a three-dimensional structural schematic diagram of a driving mechanism in an embodiment of a gear hardness detection device of the utility model;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of a stage in an embodiment of a gear hardness detection device of the utility model;

[0028] The reference numerals in the drawings of the specification include:

[0029] A base (1), a column (2), a hardness detection device (3), a housing (31), a mounting cavity (311), a central axis (312), a detection head (32), a sleeve (33), a driving mechanism (4), a rack plate (41), a rotating wheel (42), a driving gear (43), a connecting shaft (44), a stage (5), a positioning convex column (51), a limiting ring (6), a telescopic column (7), an outer cylinder (71), an inner rod (73), and a gear to be tested (01). DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0031] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0032] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inner", "outer", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it 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 components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Embodiment 1:

[0035] like Figure 1-5Specifically, a gear hardness detection device comprises a base 1 and a hardness detection device 3, the base 1 is fixedly connected with a column 2, the hardness detection device 3 is movably mounted on the column 2, and is lifted and lowered under the drive of a driving mechanism 4, and also comprises a stage 5 for placing a gear 01 to be tested, the stage 5 is located below the hardness detection device 3, a limiting ring 6 is coaxially arranged on the outer periphery of the stage 5, and the limiting ring 6 is connected to the base 1 through a telescopic column 7. When the gear hardness testing device is in use, the gear 01 to be tested is placed on the stage 5. Since a limit ring 6 is coaxially arranged on the outer periphery of the stage 5, the limit ring 6 surrounds the outer periphery of the gear 01 to be tested, and the limit ring 6 can limit the movement of the gear 01 to be tested to a certain extent. Driven by the driving mechanism 4, the hardness testing device 3 moves downward along the column 2 and contacts the gear 01 to be tested for testing. After the test is completed, a retractable telescopic column 7 is connected to the bottom of the limit ring 6, and the limit ring 6 can be pressed down to expose the gear 01 to be tested in the air, so that the gear 01 to be tested is conveniently removed from the stage 5.

[0036] In this example, the inner wall of the limiting ring 6 is provided with a tooth groove. In the initial state, the bottom of the limiting ring 6 is flush with the top of the stage 5 , and a positioning boss 51 is provided at the center of the stage 5 .

[0037] The inner wall of the limiting ring 6 is provided with a tooth groove, and the center of the stage 5 is provided with a positioning boss 51. The gear 01 to be tested can be aligned with the positioning boss 51 and placed on the circular stage 5. At the same time, the teeth of the gear 01 to be tested can be correspondingly extended into the tooth grooves on the inner wall of the limiting ring 6, thereby limiting the rotation of the gear 01 to be tested for detection by the hardness detection device 3.

[0038] In this example, the telescopic column 7 includes an outer cylinder 71 and an inner rod 73, the inner rod 73 is movably arranged inside the outer cylinder 71, and a reset member is arranged between the inner rod 73 and the bottom of the outer cylinder 71, the upper end of the inner rod 73 is fixedly connected to the limit ring 6, and the outer cylinder 71 is fixedly connected to the base 1. The reset member is a spring. The outer cylinder 71 at the bottom of the telescopic column 7 is connected to the base 1, a spring is arranged inside the outer cylinder 71, and the inner rod 73 is arranged in the outer cylinder 71 and supported by the spring.

[0039] In this example, the hardness detection device 3 includes: a shell 31, a sleeve 33 is provided on the back of the shell 31, the sleeve 33 is sleeved on the column 2, and a detection head 32 is connected to the bottom of the shell 31; a mounting cavity 311 for mounting the driving mechanism 4 is provided on the back of the shell 31, and a central axis 312 is provided in the mounting cavity 311.

[0040] In this example, the driving mechanism 4 includes: a driving gear 43, which is located in the mounting cavity 311 and is rotatably connected to the central shaft 312; a rotating wheel 42, which is located outside the shell 31 and is coaxially fixedly connected to the driving gear 43 through a connecting shaft 44; a rack plate 41, which is vertically fixedly connected to the column 2, and the driving gear 43 and the rack plate 41 are meshingly connected. The hardness testing device 3 is movably connected to the column 2 and is driven to move up and down by the driving mechanism 4. Specifically, the rotating wheel 42 is rotated. Since the rotating wheel 42 is coaxially fixedly connected with the driving gear 43 through the connecting shaft 44, the rotating wheel 42 drives the driving gear 43 to rotate. The driving gear 43 is meshed and connected to the rack plate 41. The driving gear 43 moves along the rack plate 41 to drive the housing 31 to move, and then drives the detection head 32 to move. The detection head 32 contacts and squeezes the gear 01 to be tested. If the quality of the gear 01 to be tested is unqualified, the detection head 32 squeezes the gear 01 to be tested, and there will be cracks on the surface of the gear 01 to be tested. After the detection of the gear 01 to be tested is completed, the limit ring 6 is pressed downward to expose the gear 01 to be tested in the air, so that the gear 01 to be tested is conveniently removed from the stage 5.

[0041] Working principle: When in use, the gear 01 to be tested is placed on the stage 5. Since a limit ring 6 is coaxially arranged on the outer periphery of the stage 5, the limit ring 6 surrounds the outer periphery of the gear 01 to be tested. The limit ring 6 can limit the movement of the gear 01 to be tested to a certain extent. Driven by the driving mechanism 4, the hardness detection device 3 moves downward along the column 2 and contacts the gear 01 to be tested for detection. After the detection is completed, a retractable telescopic column 7 is connected to the bottom of the limit ring 6, and the limit ring 6 can be pressed down to expose the gear 01 to be tested in the air, so that the gear 01 to be tested is convenient to remove from the stage 5.

[0042] The above are only embodiments of the utility model, and the circuits, electronic components and modules involved are all prior art, which can be fully implemented by those skilled in the art. It is needless to say that the content protected by this application does not involve improvements to software and methods. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. Ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the utility model before the application date or priority date, can obtain all the prior art in the field, and have the ability to apply conventional experimental means before the date. Ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent.

Claims

1. A gear hardness detection device, comprising a base (1) and a hardness detection device (3), wherein the base (1) is fixedly connected to a column (2), and the hardness detection device (3) is movably mounted on the column (2) and is movable and movable when driven by a driving mechanism (4), characterized in that: It also includes a stage (5) for placing the gear (01) to be tested, the stage (5) being located below the hardness testing device (3), a limiting ring (6) being coaxially arranged on the outer periphery of the stage (5), and the limiting ring (6) being connected to the base (1) via a telescopic column (7).

2. A gear hardness detection device as claimed in claim 1, characterized in that: The inner wall of the limiting ring (6) is provided with tooth grooves, and in an initial state, the bottom of the limiting ring (6) is flush with the top of the loading platform (5), and a positioning protrusion (51) is provided at the center of the loading platform (5).

3. A gear hardness detection device as claimed in claim 1, characterized in that: The telescopic column (7) comprises an outer cylinder (71) and an inner rod (73); the inner rod (73) is movably arranged inside the outer cylinder (71); a reset member is arranged between the inner rod (73) and the bottom of the outer cylinder (71); the upper end of the inner rod (73) is fixedly connected to a limiting ring (6); and the outer cylinder (71) is fixedly connected to the base (1).

4. A gear hardness detection device as claimed in claim 3, characterized in that: The reset element is a spring.

5. A gear hardness testing device as claimed in claim 1, characterized in that: The hardness detection device (3) comprises: A housing (31), wherein a sleeve (33) is provided on the back of the housing (31), the sleeve (33) is sleeved on the column (2), and a detection head (32) is connected to the bottom of the housing (31); The back of the housing (31) is provided with a mounting cavity (311) for mounting the driving mechanism (4), and a central axis (312) is provided in the mounting cavity (311).

6. A gear hardness testing device as claimed in claim 5, characterized in that: The driving mechanism (4) comprises: A driving gear (43), the driving gear (43) being located in the mounting cavity (311) and rotatably connected to the central shaft (312); A rotating wheel (42), the rotating wheel (42) is located outside the housing (31), and the rotating wheel (42) is coaxially fixedly connected to the driving gear (43) via a connecting shaft (44); A rack plate (41), wherein the rack plate (41) is vertically fixedly connected to the column (2), and the driving gear (43) is meshingly connected with the rack plate (41).

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