A bearing table for a rockwell hardness tester

Abstract

The utility model discloses a kind of bearing table for Rockwell hardness tester, it is related to material testing tool technical field, including tester main body, tester main body front end inner bottom surface vertical installation has support table, support table top surface installs the bearing table main body of cooperation installation groove, bearing table main body inner chamber is equipped with multiple support subassembly;The utility model is through multiple support subassembly, realize the stable support of multiple types of workpieces to be measured and accurate lifting function;Not only can be in the preparation phase of test through the trapezoidal structure of lifting platform cooperation transmission screw drive, form V-shaped support adaptation cylindrical, arc measured piece, also can be through lifting plate cooperation ball spline screw rod form plane support adaptation flat plate shape measured piece, simultaneously with the aid of the protruding rubber block of lifting plate enhances workpiece skid resistance, and the spring auxiliary support ball spline screw rod between first lifting rod and second lifting rod, improve the accuracy of hardness detection data;In support adjustment stage.

Description

Technical Field

[0001] This utility model relates to the field of material testing equipment technology, and in particular to a support platform for a Rockwell hardness tester. Background Technology

[0002] In the field of materials performance testing, the Rockwell hardness tester, as a key device for measuring the hardness of metallic and non-metallic materials, is widely used in manufacturing, metallurgy, and quality inspection institutions. Its testing accuracy directly depends on the stability and compatibility of the support platform for the workpiece being tested. As the core component of the tester that directly supports the workpiece, the support platform must meet the requirements for precise positioning and stable support of workpieces of different shapes and specifications to ensure the reliability of the hardness test data. However, existing Rockwell hardness tester platforms generally suffer from the following technical defects, making it difficult to meet the needs of diverse testing scenarios: Limited support modes and poor workpiece adaptability: Existing platforms mostly adopt a fixed structure design, only capable of providing a single type of support function (e.g., only suitable for flat workpieces). When facing cylindrical, curved, or other non-planar workpieces, the lack of a dedicated positioning support structure makes the workpiece prone to lateral slippage and displacement, resulting in uneven force during testing. Furthermore, to adapt to workpieces of different shapes, additional custom-made support accessories are required, increasing equipment procurement and maintenance costs, necessitating frequent accessory replacements, extending test preparation time, and reducing testing efficiency. Therefore, improvements are needed to address these issues. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a support platform for a Rockwell hardness tester.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a support platform for a Rockwell hardness tester, comprising a tester body, a support platform vertically mounted on the inner bottom surface of the front end of the tester body, and a touch screen mounted on the upper front end of the tester body, a square mounting groove opened on the top surface of the support platform, and a support platform body that matches the mounting groove mounted on the top surface of the support platform, and multiple support components installed in the inner cavity of the support platform body.

[0005] Preferably, the multi-support component includes a drive chamber opened on the top surface of the support platform body, a first lifting groove with a circular structure opened in the middle of the top surface of the support platform body communicating with the drive chamber, a second lifting groove opened on both sides of the first lifting groove communicating with the drive chamber, a partition platform installed below the first lifting groove, the top surface of the partition platform being fixedly connected to the inner top surface of the drive chamber, and a first limiting groove with a circular structure opened in the middle of the inner bottom surface of the partition platform communicating with the drive chamber.

[0006] Preferably, the main body of the support platform is equipped with a lifting plate that matches the first lifting groove. Multiple protruding rubber blocks are equidistantly installed on the top surface of the lifting plate. The main body of the support platform is slidably connected to a lifting platform that matches the second lifting groove. A connecting block is installed between the two lifting platforms. A trapezoidal structure is opened at the close ends of the two lifting platforms. A second limiting groove that matches the first limiting groove is opened on the top surface of the connecting block. Threaded holes are opened on both sides of the connecting block.

[0007] Preferably, the outer front end and both sides of the support platform body are provided with rotating holes that connect to the drive chamber, and the outer side of the support platform body is rotatably connected with rotating rods that cooperate with the rotating holes. The distal ends of the multiple rotating rods are provided with internal hexagonal structures, and the proximal ends of the multiple rotating rods are fixedly connected with first bevel gears.

[0008] Preferably, vertical positioning rods are rotatably connected to both sides of the driving chamber, a second bevel gear is fixedly connected below the positioning rod, and a worm gear is fixedly connected above the positioning rod; the main body of the support platform has a first limiting hole, and a second limiting hole is opened in the inner wall of the first limiting hole; the two positioning rods are rotatably connected to transmission screws that cooperate with the first limiting hole at their near ends; a worm wheel is fixedly connected to the middle of the two transmission screws; the worm wheel is placed between the second limiting holes; and the top and bottom surfaces of the worm wheel have circular structures.

[0009] Preferably, the second limiting hole has a limiting platform with a matching circular structure, the transmission screw is threaded to the connecting block through a threaded hole, the first bevel gear meshes with the second bevel gear for transmission, and the worm gear meshes with the worm wheel for rotation.

[0010] Preferably, the first bevel gear, the second bevel gear, the worm, the worm wheel, and the positioning rod constitute a first basic transmission assembly. The bottom surface of the partition platform is rotatably connected to a spline nut that matches the first limiting groove. A ball spline screw that matches the first limiting groove, the second limiting groove, and the spline nut is vertically installed in the middle of the drive chamber. The inner diameter of the second limiting groove is larger than that of the ball spline screw.

[0011] Preferably, the top surface of the ball spline screw abuts against the lifting plate, and a rotating groove is provided in the middle of the bottom surface of the ball spline screw. A sealed bearing is sleeved in the rotating groove. A first lifting rod is vertically installed in the middle of the bottom surface of the drive chamber. A second lifting rod is slidably connected to the inner cavity of the first lifting rod and sleeved on the inner side of the sealed bearing. A spring is fixed between the second lifting rod and the first lifting rod.

[0012] Preferably, the spline nut has multiple equidistant toothed grooves on its outer side, and the front end of the spline nut is rotatably connected to a transmission rod placed in the drive chamber. A transmission wheel with a toothed structure is fixed above the transmission rod, and a transmission belt with matching toothed grooves is sleeved between the transmission wheel and the spline nut.

[0013] Preferably, a second basic transmission assembly is installed at the middle of the front end of the transmission rod, and the other end of the first bevel gear in the second basic transmission assembly is fixedly connected to the rotating rod rotatably connected to the front end of the support platform body.

[0014] Compared with existing technologies, the advantages of this invention are as follows: This invention achieves stable support and precise lifting of various types of workpieces under test through multiple support components; it can not only form a V-shaped support to adapt to cylindrical and arc-shaped workpieces under test through the trapezoidal structure of the lifting platform and the transmission screw during the test preparation stage, but also form a planar support to adapt to flat workpieces under test through the lifting plate and the ball spline screw. At the same time, the raised rubber blocks of the lifting plate enhance the anti-slip properties of the workpiece, and the spring between the first and second lifting rods assists in supporting the ball spline screw, improving the accuracy of hardness test data; during the support adjustment stage, the meshing transmission of the worm gear and worm wheel forms a one-way self-locking mechanism to prevent the lifting platform and lifting plate from sliding down after adjustment, ensuring stable support height; the adaptation process does not require replacing the entire load-bearing structure, and the support mode can be switched by adjusting different rotating rods to adapt to different specifications of workpieces under test, without the need for customized special support components; it meets the adaptation requirements of Rockwell hardness testers for testing different types of workpieces, improving the stability and versatility of the testing process. Attached Figure Description

[0015] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure proposed in this utility model; Figure 2 This is a schematic diagram of the main structure of the support platform proposed in this utility model; Figure 3 This is a half-sectional view of the main structure of the support platform proposed in this utility model; Figure 4 This is a schematic diagram of the transmission belt and spline nut structure proposed in this utility model; Figure 5 The present utility model proposes Figure 3 Enlarged diagram of part A in the middle; Figure 6 The present utility model proposes Figure 3 Enlarged diagram of section B; Figure 7 The present utility model proposes Figure 3 Enlarged diagram of section C.

[0016] The components in the diagram are numbered as follows: 1. Main body of the testing instrument; 2. Support platform; 3. Main body of the bearing platform; 4. Lifting plate; 5. Lifting platform; 6. Rotating rod; 7. First bevel gear; 8. Second bevel gear; 9. Worm gear; 10. Worm wheel; 11. Transmission screw; 12. First lifting rod; 13. Second lifting rod; 14. Spring; 15. Ball spline screw; 16. Conveyor belt; 17. Spline nut; 18. Separator; 19. Transmission wheel. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Example: See Figures 1 to 7This utility model discloses a support platform for a Rockwell hardness tester, comprising a tester body 1, through which a support platform 2 is easily mounted via external components; the support platform 2 is vertically mounted on the inner bottom surface of the front end of the tester body 1, facilitating subsequent lifting of the support platform body 3; a touch screen is mounted on the upper front end of the tester body 1; a square mounting groove is formed on the top surface of the support platform 2, and the support platform body 3, which mates with the mounting groove, is mounted on the top surface of the support platform 2; the support platform body 3 allows for easy replacement of the support structure according to different objects to be tested, ensuring the stability of the object being tested and thus ensuring stable test data; multiple support components are installed inside the support platform body 3, including those with... The top surface of the bearing platform body 3 has a drive chamber. A first circular lifting groove is formed in the center of the top surface of the bearing platform body 3, connecting to the drive chamber. Second lifting grooves are formed on both sides of the first lifting groove, connecting to the drive chamber. A partition platform 18 is installed below the first lifting groove. The top surface of the partition platform 18 is fixedly connected to the top surface of the drive chamber. A first circular limiting groove is formed in the center of the bottom surface of the partition platform 18, connecting to the drive chamber. The partition platform 18 facilitates the installation and limiting of the spline nut 17 with an external bearing. The bearing platform body 3 is equipped with a lifting plate 4 that matches the first lifting groove. Multiple raised rubber blocks are equidistantly installed on the top surface of the lifting plate 4, facilitating the support and limiting of the object to be tested. The bearing platform body 3 is also slidably connected to the second lifting groove. The lifting platform 5 has a connecting block installed between two lifting platforms 5, and trapezoidal structures are opened at the near ends of the two lifting platforms 5 to facilitate the support and limiting of the object to be inspected. The top surface of the connecting block is connected to a second limiting groove that matches the first limiting groove, and threaded holes are opened on both sides of the connecting block. The front end and both sides of the outer side of the bearing platform body 3 are connected to the drive chamber and have rotation holes. Rotating rods 6 that match the rotation holes are rotatably connected to the outer side of the bearing platform body 3. Multiple rotating rods 6 have internal hexagonal structures at their distal ends. The rotating rods 6 facilitate the installation and fixing of the first bevel gear 7 by welding. The first bevel gear 7 is fixed to the near ends of multiple rotating rods 6, which facilitates the rotation of the second bevel gear 8. Vertical positioning rods are rotatably connected to both sides of the drive chamber. A second bevel gear 8 is fixedly connected below the positioning rods. The second bevel gear 8 facilitates the rotation of the worm gear 9 through the positioning rods. The worm gear 9 is fixedly connected above the positioning rods. The worm gear 9 facilitates the rotation of the worm wheel 10 and forms a one-way self-locking structure with the worm wheel 10. The main body 3 of the support platform has a first limiting hole and a second limiting hole on the inner wall of the first limiting hole. The two positioning rods are rotatably connected to a transmission screw 11 that matches the first limiting hole at their near ends. The transmission screw 11 facilitates the fixing of the worm wheel 10 through external grooving and welding processes. The rotation of the worm wheel 10 then drives the connecting block to rise and fall, thereby driving the lifting platform 5 to rise and fall.Both transmission screws 11 are fixedly connected to a worm gear 10 at their middle. The worm gear 10 is positioned between the second limiting holes, and both the top and bottom surfaces of the worm gear 10 have circular structures. The worm gear 10 facilitates the reception of the transmitted force from the worm 9 to subsequently drive the transmission screw 11 to rotate. The second limiting hole has a limiting platform with a matching circular structure. The transmission screw 11 is threadedly connected to the connecting block through a threaded hole. The first bevel gear 7 and the second bevel gear 8 mesh for transmission. The worm 9 meshes with the worm gear 10 for rotation, and the transmission screw 11 meshes with the connecting block for transmission.

[0019] In this invention, the first bevel gear 7, the second bevel gear 8, the worm 9, the worm wheel 10, and the positioning rod constitute the first basic transmission assembly. A spline nut 17, matching the first limiting groove, is rotatably connected to the bottom surface of the partition platform 18. A ball spline screw 15, matching the first limiting groove, the second limiting groove, and the spline nut 17, is vertically installed in the center of the drive chamber. The spline nut 17 facilitates the lifting and lowering of the ball spline screw 15. The inner diameter of the second limiting groove is larger than that of the ball spline screw 15, facilitating the lifting and lowering and resetting of the lifting plate 4. The top surface of the ball spline screw 15 abuts against the lifting plate 4, and a rotating groove is formed in the center of the bottom surface of the ball spline screw 15. A sealed bearing is fitted inside the rotating groove. A first lifting rod 12 is vertically installed in the center of the bottom surface of the drive chamber, facilitating the sliding connection of the second lifting rod 13. The inner cavity of the first lifting rod 12 is slidably connected to the end sleeved on the inner side of the sealed bearing. The second lifting rod 13 provides a support structure for the ball spline screw 15 via the spring 14. The spring 14 is fixedly connected between the second lifting rod 13 and the first lifting rod 12, providing driving force for the second lifting rod 13. The spline nut 17 has multiple equidistant toothed grooves on its outer side, and the front end of the spline nut 17 is rotatably connected to a transmission rod placed in the drive chamber. A toothed transmission wheel 19 is fixedly connected above the transmission rod, which facilitates the installation of the transmission belt 16 by matching the toothed grooves of the spline nut 17. The transmission belt 16 with matching toothed grooves is sleeved between the transmission wheel 19 and the spline nut 17, which facilitates the transmission of the rotational power of the transmission wheel 19 to the spline nut 17. The middle and front ends of the transmission rod are equipped with a second basic transmission assembly. The other end of the first bevel gear 7 in the second basic transmission assembly is fixedly connected to the rotating rod 6 rotatably connected to the front end of the support platform body 3.

[0020] Working principle: When using this utility model, the operator first checks the carrier platform body 3 and the tester body 1 to ensure that the support platform 2 and the tester body 1 are firmly connected. Then, the operator checks whether the carrier platform body 3 and the top mounting groove of the support platform 2 are closed and stable. At the same time, the operator checks whether the rotation between the rotating rod 6 and the outer rotating hole of the carrier platform body 3 is smooth. The operator also checks whether the sliding between the lifting plate 4 and the lifting platform 5 and the first and second lifting grooves is smooth by rotating the corresponding rotating rod 6 with an external hexagonal tool. Then, the operator checks whether the touch screen is connected to the control system installed inside the tester body 1 and whether the connection is normal. After the inspection is completed, the equipment is powered on. After the equipment is powered on, the staff inputs the parameters of the test piece, such as the material hardness range and support method requirements, through the touch screen. Then, the internal control system generates control logic based on the parameters. At this time, the staff can adjust the support structure on the top surface of the main body 3 of the bearing platform through different test pieces. The support structure of the main body 3 of the bearing platform can be divided into V-shaped support adjustment (adapted to cylindrical and arc-shaped test pieces) and planar support adjustment. V-shaped support adjustment: When the part to be tested is cylindrical or arc-shaped and needs to form a V-shaped support through the lifting platform 5, the operator uses an external hex wrench to rotate the rotating rods 6 on both sides of the main body 3 of the bearing platform. The rotating rods 6 drive the fixed first bevel gear 7 to rotate. The first bevel gear 7 drives the second bevel gear 8 to mesh and drive, which in turn drives the positioning rod and the worm gear 9 fixed above the positioning rod to rotate. Since the worm gear 9 meshes and rotates with the worm wheel 10 fixed in the middle of the transmission screw 11, and the worm wheel 10 is placed between the limiting platforms of the second limiting hole, it drives the transmission screw 11 to rotate. At this time, the transmission screw 11 meshes with the connecting block between the two lifting platforms 5 through the threaded hole, which drives the connecting block to move upward along the axis of the transmission screw 11, thereby driving the two lifting platforms 5 to rise synchronously along the second lifting groove. Since the two lifting platforms 5 are trapezoidal structures, a V-shaped support structure adapted to the part to be tested is formed during the rising process. When the lifting platform 5 reaches the predetermined height, the operator stops rotating the wrench. Planar support adjustment: When the test piece is a flat structure and needs to be supported by the lifting plate 4, the operator uses an Allen wrench to rotate the rotating rod 6 at the front end of the bearing platform body 3. The rotating rod 6 drives the first bevel gear 7 of the second basic transmission component to rotate, which in turn drives the second bevel gear 8 to rotate, which in turn drives the transmission rod to rotate. At this time, the transmission wheel 19 fixed above the transmission rod will also rotate, which drives the spline nut 17 placed on the inner bottom surface of the partition platform 18 to rotate through the transmission belt 16. The rotation of the spline nut 17 will drive the ball spline screw 15. The ball spline screw 15 is raised. Since the top surface of the ball spline screw 15 abuts against the bottom surface of the lifting plate 4, the rise of the ball spline screw 15 will drive the lifting plate 4 to rise along the first lifting groove until the protruding rubber block installed on the top surface of the lifting plate 4 is in contact with the bottom surface of the object to be tested (during the lifting process of the lifting plate 4, the spring 14 installed inside the first lifting rod 12 will provide support for the second lifting rod 13, thereby providing a certain support for the ball spline screw 15). Then, by rotating the support platform 2, the main body of the bearing platform 3 is lifted to cooperate with the detection head to detect the object to be tested.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A support platform for a Rockwell hardness tester, comprising a tester body (1), characterized in that: The tester body (1) has a support platform (2) vertically installed on the inner bottom surface of the front end, and a touch screen is installed on the front end of the tester body (1). The support platform (2) has a square mounting groove on its top surface, and a carrier body (3) that matches the mounting groove is installed on the top surface of the support platform (2). Multiple support components are installed in the inner cavity of the carrier body (3).

2. The support platform for a Rockwell hardness tester according to claim 1, characterized in that: The multi-support component includes a drive chamber opened on the top surface of the support platform body (3). The top surface of the support platform body (3) is connected to the drive chamber and has a first lifting groove with a circular structure. The two sides of the first lifting groove are connected to the drive chamber and have a second lifting groove. A partition platform (18) is installed below the first lifting groove. The top surface of the partition platform (18) is fixed to the top surface of the drive chamber, and the bottom surface of the partition platform (18) is connected to the drive chamber and has a first limiting groove with a circular structure.

3. The support platform for a Rockwell hardness tester according to claim 2, characterized in that: The main body (3) of the support platform is equipped with a lifting plate (4) that matches the first lifting groove. Multiple protruding rubber blocks are installed at equal intervals on the top surface of the lifting plate (4). The main body (3) of the support platform is slidably connected to a lifting platform (5) that matches the second lifting groove. A connecting block is installed between the two lifting platforms (5). A trapezoidal structure is opened at the close ends of the two lifting platforms (5). A second limiting groove that matches the first limiting groove is opened on the top surface of the connecting block. Threaded holes are opened on both sides of the connecting block.

4. The support platform for a Rockwell hardness tester according to claim 3, characterized in that: The outer front end and both sides of the support platform body (3) are connected to the drive chamber and have rotation holes. The outer side of the support platform body (3) is rotatably connected to a rotating rod (6) that matches the rotating hole. The distal ends of the multiple rotating rods (6) are provided with internal hexagonal structures, and the proximal ends of the multiple rotating rods (6) are fixedly connected with a first bevel gear (7).

5. The support platform for a Rockwell hardness tester according to claim 4, characterized in that: Both sides of the drive chamber are rotatably connected to vertical positioning rods. A second bevel gear (8) is fixedly connected below the positioning rods, and a worm gear (9) is fixedly connected above the positioning rods. The main body (3) of the support platform is provided with a first limiting hole. A second limiting hole is provided on the inner wall of the first limiting hole. The two positioning rods are rotatably connected to transmission screws (11) that cooperate with the first limiting hole at their close ends. A worm wheel (10) is fixedly connected in the middle of the two transmission screws (11). The worm wheel (10) is placed between the second limiting holes, and the top and bottom surfaces of the worm wheel (10) are provided with circular structures.

6. The support platform for a Rockwell hardness tester according to claim 5, characterized in that: The second limiting hole is provided with a limiting platform with a matching circular structure. The transmission screw (11) is threadedly connected to the connecting block through a threaded hole. The first bevel gear (7) meshes with the second bevel gear (8) for transmission. The worm (9) meshes with the worm wheel (10) for rotation.

7. The support platform for a Rockwell hardness tester according to claim 6, characterized in that: The first bevel gear (7), the second bevel gear (8), the worm (9), the worm wheel (10) and the positioning rod constitute the first basic transmission assembly. The bottom surface of the partition platform (18) is rotatably connected to a spline nut (17) that matches the first limiting groove. A ball spline screw (15) that matches the first limiting groove, the second limiting groove and the spline nut (17) is vertically installed in the middle of the drive chamber. The inner diameter of the second limiting groove is larger than that of the ball spline screw (15).

8. The support platform for a Rockwell hardness tester according to claim 7, characterized in that: The top surface of the ball spline screw (15) abuts against the lifting plate (4), and a rotating groove is provided in the middle of the bottom surface of the ball spline screw (15). A sealed bearing is sleeved in the rotating groove. A first lifting rod (12) is vertically installed in the middle of the bottom surface of the drive chamber. A second lifting rod (13) is slidably connected to the inner cavity of the first lifting rod (12) and sleeved on the inner side of the sealed bearing. A spring (14) is fixed between the second lifting rod (13) and the first lifting rod (12).

9. A support platform for a Rockwell hardness tester according to claim 8, characterized in that: The spline nut (17) has multiple equally spaced toothed grooves on its outer side, and the front end of the spline nut (17) is rotatably connected to a transmission rod placed in the drive chamber. A transmission wheel (19) with a toothed structure is fixed above the transmission rod, and a transmission belt (16) with matching toothed grooves is sleeved between the transmission wheel (19) and the spline nut (17).

10. A support platform for a Rockwell hardness tester according to claim 9, characterized in that: The transmission rod is equipped with a second basic transmission assembly at the middle of its front end. The other end of the first bevel gear (7) in the second basic transmission assembly is fixedly connected to the rotating rod (6) which is rotatably connected to the front end of the bearing platform body (3).

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