Portable lifting type brinell hardness testing device

Abstract

The utility model relates to hardness detection frock technical field, the utility model provides a portable lifting type Brinell hardness detection device, it includes base, hardness tester bracket and sliding adjustment unit, base detachable setting on the workstation for placing work piece, hardness tester bracket sliding setting on the base, and hardness tester bracket is used for carrying Brinell hardness tester, sliding adjustment unit sets up on the base, is used for adjusting hardness tester bracket, and makes hardness tester bracket relative to base sliding. Through the above technical scheme, in the related art, when the desktop hardness detection equipment of general indoor determines large work piece, the work piece transportation time -consuming, work piece fixing difficult etc. Problem. Overall reduce the transportation difficulty of large work piece, reduce the transportation time of work piece, improve the determination efficiency of work piece, simultaneously convenient on -the -spot to the hardness of various work piece including special -shaped spare determination.

Description

Technical Field

[0001] The embodiments of this utility model relate to the field of hardness testing tooling technology, specifically, to a portable lifting Brinell hardness testing device. Background Technology

[0002] Brinell hardness (HB) is measured by pressing a hardened steel ball or cemented carbide ball of a certain diameter into the surface of the metal being tested under a specified test load, holding it for a specified time, and then unloading the load, measuring the diameter of the indentation on the tested surface. Brinell hardness is determined by a Brinell hardness tester.

[0003] Brinell hardness testers are typically benchtop devices used in testing procedures, usually housed in a testing room. When needed, the workpiece is placed on the tester's platform for measurement. However, in practice, due to limited testing room space and the inability to transport large workpieces, Brinell hardness testers are best suited for testing smaller, lighter workpieces, which are easier to handle and secure. For larger, heavier workpieces, transporting them requires significant time and effort, and effectively securing irregularly shaped parts is also challenging. Therefore, effective testing of larger workpieces is not feasible, necessitating optimization and improvement of existing technology. Utility Model Content

[0004] To overcome the above-mentioned defects, the present invention provides a portable lifting Brinell hardness testing device, which solves the problems of long workpiece transportation time and difficulty in fixing the workpiece when measuring large workpieces with general indoor benchtop hardness testing equipment.

[0005] According to one aspect, at least one embodiment of the present invention provides a portable lifting Brinell hardness testing device, comprising:

[0006] The base is detachably mounted on a worktable for placing workpieces;

[0007] A hardness tester bracket is slidably mounted on the base, and the hardness tester bracket is used to support the Brinell hardness tester.

[0008] A sliding adjustment unit is disposed on the base for adjusting the hardness tester bracket and allowing the hardness tester bracket to slide relative to the base.

[0009] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of the present invention, the base is provided with a plurality of mounting through holes for mounting fastening bolts.

[0010] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of this utility model, the sliding adjustment unit includes:

[0011] A lead screw, which is mounted on the base;

[0012] A sliding side plate, fixedly connected to the hardness tester bracket, is located above the base and is used to fix the Brinell hardness tester.

[0013] A sliding sleeve is threadedly connected to the outer circumference of the lead screw and rotatably connected to the sliding side plate;

[0014] A transmission gear is sleeved on the outer circumference of the sliding sleeve;

[0015] The driven gear is rotatably mounted on the sliding side plate and meshes with the transmission gear. The axis of the driven gear is parallel to the axis of the lead screw.

[0016] The driving gear is rotatably mounted on the sliding side plate and meshes with the driven gear. The axis of the driving gear is perpendicular to the axis of the driven gear, and the driving gear and the driven gear are connected by helical teeth.

[0017] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of this utility model, the sliding adjustment unit further includes:

[0018] A rocker arm passes through and is rotatably mounted on the sliding side plate, and the rocker arm is fixedly connected to the drive gear.

[0019] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of the present invention, there are two lead screws and two transmission gears, the two lead screws are spaced apart, and the driven gear is located between the two transmission gears and meshes with the two transmission gears.

[0020] For example, in at least one embodiment of the present invention, a portable lifting Brinell hardness testing device is provided, which further includes a lifting unit for adjusting the height of the base, the lifting unit comprising:

[0021] The lifting platform is detachably mounted on the worktable;

[0022] A lifting frame is detachably connected to the lower end surface of the base and located above the lifting seat, and the lifting frame is slidably disposed relative to the lifting seat;

[0023] Two lifting arm assemblies are located between the lifting seat and the lifting frame. One end of each lifting arm assembly is hinged to the lifting frame, and the other end is hinged to the lifting seat.

[0024] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of the present invention, the lifting arm assembly includes a first arm and a second arm that are hinged to each other by means of a hinge shaft. The hinge shaft is provided with threaded holes, and the two threaded holes have internal threads with opposite directions of rotation. A screw shaft is connected to the internal thread of the threaded hole. The screw shaft has two external threads with opposite directions of rotation, and the two external threads are respectively threaded to the two screw shafts.

[0025] For example, in at least one embodiment of the present invention, a portable lifting Brinell hardness testing device further includes:

[0026] A fixed base is disposed on the base and located below the sliding side plate. The fixed base has a tray on the side near the sliding side plate, and the tray abuts against the lower surface of the position to be measured on the workpiece.

[0027] For example, in at least one embodiment of the present invention, a portable lifting Brinell hardness testing device further includes:

[0028] A movable base is rotatably mounted on the base and has a through groove for the lead screw to pass through. The movable base has a tray on the side near the sliding side plate, and the tray abuts against the lower surface of the workpiece at the position to be measured.

[0029] A rotating sleeve is fitted onto the lower end of the lead screw and is slidably disposed within the through groove.

[0030] For example, in a portable lifting Brinell hardness testing device provided in at least one embodiment of this utility model, the movable base has several locking through holes and further includes:

[0031] A locking rod passes through the locking through hole and is disposed on the base;

[0032] The unlocking component is hinged to the locking rod and located above the movable base.

[0033] The beneficial effects of the embodiments of this utility model are as follows:

[0034] In this invention, the detachable base allows the testing device to be easily installed on the worktable where the workpiece is located, eliminating the need to transport large workpieces to a fixed testing chamber. This avoids the significant time and effort spent on transporting large workpieces and solves the problem of difficult transportation of large workpieces in existing technologies. The hardness tester bracket slides on the base perpendicular to its upper surface. With the help of a sliding adjustment unit, the height of the Brinell hardness tester can be flexibly adjusted according to the height of the workpiece's testing position, eliminating the need for complex workpiece fixing and adjustment. This is particularly suitable for large, heavy, or irregularly shaped workpieces. The sliding adjustment unit allows for precise adjustment of the hardness tester bracket position, ensuring the Brinell hardness tester is accurately aligned with the workpiece's testing position, improving testing accuracy and efficiency. Simultaneously, this structural design makes the testing device compact, easy to operate, portable, and mobile, adaptable to hardness testing needs in different working environments. It effectively solves the problems of difficult fixing of large workpieces and poor applicability of testing equipment in existing technologies. Overall, it reduces the difficulty of transporting large workpieces, shortens transport time, improves testing efficiency, and facilitates on-site hardness testing of various workpieces, including irregularly shaped parts. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this utility model and these drawings without any creative effort.

[0036] Figure 1 This is a schematic diagram of the overall structure (with fixed base) in one embodiment of the present utility model;

[0037] Figure 2 for Figure 1 A schematic diagram of the structure (with fixed base) at the sliding adjustment unit in the embodiment;

[0038] Figure 3 for Figure 1 A schematic diagram of the structure (with fixed base) at the lifting unit in the embodiment;

[0039] Figure 4 for Figure 1 A schematic diagram of the structure (with movable base) at the sliding adjustment unit in the embodiment;

[0040] In the diagram: 1. Base; 11. Mounting through hole; 2. Workbench; 3. Hardness tester bracket; 4. Brinell hardness tester; 5. Sliding adjustment unit; 51. Lead screw; 52. Sliding side plate; 53. Sliding sleeve; 54. Transmission gear; 55. Driven gear; 56. Driving gear; 57. Crank handle; 6. Lifting unit; 61. Lifting seat; 62. Lifting frame; 63. Lifting swing arm assembly; 631. Hinge shaft; 632. First swing arm; 633. Second swing arm; 634. Lead screw; 7. Fixed base; 71. Tray; 81. Movable base; 811. Through groove; 82. Rotating sleeve; 83. Locking through hole; 84. Locking rod; 85. Unlocking component. Detailed Implementation

[0041] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope.

[0042] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0043] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0044] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] like Figures 1-4 As shown, this invention illustrates a portable lifting Brinell hardness testing device according to one embodiment. The portable lifting Brinell hardness testing device includes a base 1, a hardness tester bracket 3, and a sliding adjustment unit 5. The base 1 is detachably mounted on a worktable 2. The base 1 is flat, with its lower surface contacting the worktable 2 where the workpiece is placed. The base 1 has a guide structure extending perpendicular to its upper surface; for example, vertical guide rails are fixed to both sides of the upper surface of the base 1. The hardness tester bracket 3 has a frame structure, with a slider at its bottom that cooperates with the guide rails. This allows the hardness tester bracket 3 to slide along the guide rails in a direction perpendicular to the upper surface of the base 1, thus achieving vertical movement. The top of the hardness tester bracket 3 forms an mounting plane for supporting a Brinell hardness tester 4, ensuring the Brinell hardness tester 4 is securely mounted on the hardness tester bracket 3. The Brinell hardness tester 4 can be any existing hardness tester with Brinell measurement units capable of hardness testing.

[0048] The sliding adjustment unit 5 is mounted on the base 1 and is used to drive the hardness tester bracket 3 to slide relative to the base 1. In practical applications, when it is necessary to perform Brinell hardness testing on workpieces that are large in size, heavy in weight, and inconvenient to transport, the base 1 is first moved to the worktable 2 where the workpiece is placed, so that the lower surface of the base 1 is in contact with the surface of the worktable 2. Then, according to the height of the workpiece to be tested, the height of the hardness tester bracket 3 and the Brinell hardness tester 4 is adjusted by the sliding adjustment unit 5 to adapt them to the workpiece to be tested. After adjustment, the hardness of the workpiece can be tested by the Brinell hardness tester 4.

[0049] When measuring the hardness of a workpiece, the workpiece can be placed on the workbench 2 using an overhead crane in the production workshop. The crane's lifting capability reduces the difficulty of transporting large and heavy workpieces. The detachable base 1 allows the testing device to be easily installed on the workbench 2, eliminating the need to transport large workpieces to a fixed testing chamber and saving considerable time and effort. This solves the problem of difficult transportation of large workpieces in existing technologies. The hardness tester bracket 3 slides on the base 1 perpendicular to its upper surface. With the sliding adjustment unit 5, the height of the Brinell hardness tester 4 can be flexibly adjusted according to the height of the workpiece's testing position, eliminating the need for complex workpiece fixing and adjustment. This is particularly suitable for large, heavy, or irregularly shaped workpieces. The sliding adjustment unit 5 enables precise adjustment of the hardness tester bracket 3, ensuring the Brinell hardness tester 4 is accurately aligned with the workpiece's testing position, improving testing accuracy and efficiency. Meanwhile, this structural design makes the testing device compact, easy to operate, portable, and mobile, adaptable to hardness testing needs in different working environments. It effectively solves the problems of difficulty in fixing large workpieces and poor applicability of existing testing equipment. Overall, it reduces the difficulty of transporting large workpieces, shortens transport time, and improves testing efficiency, while facilitating on-site hardness testing of various workpieces, including irregularly shaped parts.

[0050] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figures 1-2 and Figure 4 As shown, the base 1 is a flat plate structure with its surface parallel to the surface of the worktable 2. Several mounting through holes 11 are provided on the base 1, penetrating the upper and lower surfaces of the base 1 and spaced apart along its surface. The diameter of the mounting through holes 11 is matched to the outer diameter of the fastening bolts, allowing the fastening bolts to pass through them. When the base 1 needs to be fixed to the worktable 2, the bolts pass through the mounting through holes 11 from the upper surface of the base 1 and extend downwards to the worktable 2. The base 1 is detachably fixed to the worktable 2 by threading into pre-drilled holes on the worktable 2, or by using a nut to engage with the bolt below the worktable 2.

[0051] The mounting through-hole 11 on the base 1 is used to install fastening bolts, which detachably fix the base 1 to the worktable 2. This allows the testing device to flexibly select the installation position according to the workpiece's location, avoiding the transportation problems of large workpieces. This detachable connection method ensures the stability of the base 1 during the testing process, preventing displacement that could affect testing accuracy, and also facilitates quick disassembly of the base 1 after testing, enabling portable movement of the testing device. The mounting through-hole 11 establishes a reliable mechanical connection between the base 1 and the worktable 2, solving the problem in existing technologies where large workpieces are difficult to fix and therefore cannot be effectively tested. It is particularly suitable for scenarios where testing needs to be performed in situ. By fixing the base 1, the hardness tester bracket 3 and the Brinell hardness tester 4 can be stably supported, providing a stable foundation for subsequent height adjustment and hardness testing.

[0052] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figures 1-2 and Figure 4 As shown, the sliding adjustment unit 5 includes a lead screw 51, a sliding side plate 52, a sliding sleeve 53, a transmission gear 54, a driven gear 55, and a driving gear 56. The lead screw 51 is arranged perpendicular to the upper surface of the base 1, with its upper end extending upward and remaining vertical. The sliding side plate 52 is a frame structure located above the base 1, with a clearance space at its bottom for the lead screw 51 to pass through. The side of the sliding side plate 52 is fixedly connected to the hardness tester bracket 3 to support the Brinell hardness tester 4. The sliding sleeve 53 is cylindrical, with an internal thread on its inner wall that matches the external thread of the lead screw 51. The sliding sleeve 53 is threaded onto the outer circumference of the lead screw 51, and its upper end is rotatably connected to the sliding side plate 52 via a bearing, allowing the sliding sleeve 53 to rotate relative to the sliding side plate 52 around the axis of the lead screw 51. The transmission gear 54 is a cylindrical gear, fixedly fitted in the middle of the outer circumference of the sliding sleeve 53, with its axis coinciding with the axis of the lead screw 51. Driven gear 55 is rotatably mounted on sliding side plate 52. Its shaft is parallel to lead screw 51. Driven gear 55 can rotate around its own axis and mesh with transmission gear 54. Driving gear 56 is rotatably mounted on sliding side plate 52 and is installed on the side plate of sliding side plate 52 via another shaft. This shaft intersects perpendicularly with the shaft of driven gear 55. The axis of driving gear 56 is perpendicular to the axis of driven gear 55. The teeth of driving gear 56 and driven gear 55 mesh with each other in a helical tooth configuration, forming a spatially interlocked shaft gear transmission structure.

[0053] When the height of the hardness tester bracket 3 needs to be adjusted, an external force drives the driving gear 56 to rotate around its axis. The driving gear 56 drives the driven gear 55 to rotate through helical gear meshing. The driven gear 55 then drives the transmission gear 54 to rotate synchronously through spur gear meshing. Since the sliding sleeve 53 is fixedly connected to the transmission gear 54 and threadedly engaged with the lead screw 51, the rotation of the transmission gear 54 is converted into the helical movement of the sliding sleeve 53 along the lead screw 51, which in turn drives the sliding side plate 52 and the hardness tester bracket 3 to slide up and down along the axis of the lead screw 51, thereby achieving height adjustment.

[0054] The threaded connection between the lead screw 51 and the sliding sleeve 53 enables the conversion of rotary motion into linear motion, ensuring precise displacement control for the lifting and lowering adjustment of the hardness tester bracket 3. The meshing connection between the transmission gear 54 and the driven gear 55 forms a first-stage reduction transmission, while the helical tooth meshing connection between the driven gear 55 and the driving gear 56 constitutes a spatial gear transmission. This not only changes the direction of power transmission but also utilizes the continuity and high overlap of the helical tooth meshing to make the transmission process smoother, reducing impact and noise. The sliding side plate 52 is rotatably connected to the sliding sleeve 53 via a bearing, preventing the sliding sleeve 53 from rotating and causing the sliding side plate 52 to rotate, ensuring that the sliding side plate 52 only moves linearly along the axis of the lead screw 51. The gear transmission structure of the sliding adjustment unit 5 can amplify the operating torque, allowing the operator to adjust the height of the hardness tester bracket 3 with a smaller force. At the same time, the multi-stage gear meshing transmission method improves the stability and accuracy of the adjustment process, solving the problems of jamming or insufficient accuracy that may occur when manually adjusting the height in the prior art. It is suitable for fine adjustment of the height of the Brinell hardness tester 4 when inspecting large workpieces, ensuring that the indenter can be accurately aligned with the surface of the workpiece to be tested.

[0055] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figures 1-2 and Figure 4 As shown, the sliding adjustment unit 5 is equipped with a rocker handle 57. The rocker handle 57 is rod-shaped, with a connecting hole at one end that matches the end of the shaft of the drive gear 56. A keyway is provided in the connecting hole, and a key is provided at the end of the shaft of the drive gear 56. The rocker handle 57 is fixedly connected to the shaft of the drive gear 56 through the key. The other end extends to the outside of the sliding side plate 52 to form an operating end.

[0056] When the height of the hardness tester bracket 3 needs to be adjusted, the operator holds the operating end of the crank handle 57 and applies rotational force. The crank handle 57 drives the shaft of the drive gear 56 to rotate through the flat key. The drive gear 56 rotates synchronously with the shaft, thereby driving the driven gear 55 and the transmission gear 54 that mesh with it to rotate. Finally, the sliding side plate 52 is raised and lowered through the threaded engagement between the sliding sleeve 53 and the lead screw 51.

[0057] The crank handle 57 is fixedly connected to the shaft of the drive gear 56 via a flat key, forming a reliable power transmission path and ensuring that the operating force is effectively converted into the rotational motion of the drive gear 56. The bearing housing reduces the frictional torque when the shaft of the drive gear 56 rotates, making operation smoother. The rod-like structure of the crank handle 57 extends to the outside of the sliding side plate 52, providing the operator with an easy fulcrum for applying force. Utilizing the lever principle, the operating torque is amplified, allowing the operator to drive the gear transmission system with less force, reducing the labor intensity of manual adjustment. This design, which directly connects the crank handle 57 to the drive gear 56, makes the height adjustment process of the hardness tester bracket 3 more convenient and efficient, especially suitable for quickly adjusting the testing height of the Brinell hardness tester 4 during on-site testing. It solves the problem of inconvenience in applying force when manually adjusting gear transmission components in the prior art, improving the practicality of the testing device.

[0058] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figures 1-2 and Figure 4 As shown, in the sliding adjustment unit 5, there are two lead screws 51 and two transmission gears 54. The two lead screws 51 are arranged parallel to each other in a direction perpendicular to the upper surface of the base 1. The bottom of the sliding side plate 52 has two clearance holes corresponding to the position of the lead screws 51, for the lead screws 51 to pass through.

[0059] Two transmission gears 54 are respectively mounted on both sides of the sliding side plate 52 via shafts. The shafts are parallel to the lead screw 51, and the transmission gears 54 can rotate around their respective shafts. The driven gear 55 is located in the middle of the sliding side plate 52, and its shaft is parallel to the shafts of the two transmission gears 54. The teeth of the driven gear 55 mesh with the teeth of the transmission gears 54. When the driving gear 56 rotates, it drives the driven gear 55 to rotate synchronously through helical gear meshing, which in turn drives the two transmission gears 54 meshing with the driven gear 55 to rotate. Since the transmission gears 54 are fixedly connected to the sliding sleeve 53, and the sliding sleeve 53 is threaded to the lead screw 51, the two lead screws 51 synchronously drive the sliding side plate 52 to rise and fall smoothly in the vertical direction.

[0060] The structure employs two lead screws 51 and two transmission gears 54, along with a driven gear 55 located in the middle, forming a symmetrical transmission layout. This ensures that the sliding side plate 52 experiences uniform force during lifting and lowering, preventing tilting or jamming caused by unilateral force and guaranteeing the stability and straightness of the hardness tester bracket 3's lifting and lowering. The helical gear meshing increases the overlap and contact length between the gears, improving the smoothness and load-bearing capacity of the transmission, ensuring reliable power transmission even when adjusting a heavy Brinell hardness tester 4. Compared to a single lead screw 51 transmission, this structure effectively distributes the load, reduces the force on a single lead screw 51, extends the service life of the lead screw 51 and gears, and improves the accuracy and efficiency of the hardness tester bracket 3's height adjustment, making it particularly suitable for precise adjustment of the hardness tester's position during the inspection of large workpieces.

[0061] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figure 1 and Figure 3 As shown, the testing device also includes a lifting unit 6, which is used to adjust the vertical position of the base 1. The lifting base 61 is a flat plate structure, with its lower surface in contact with the worktable 2. Several mounting holes are provided on the edge of its upper surface, allowing it to be detachably fixed to the worktable 2 using fastening bolts. The upper end face of the lifting frame 62 is detachably connected to the lower end face of the base 1 via bolts. The lower end face is located directly above the lifting base 61 and remains parallel to it.

[0062] Two lifting arm assemblies 63 are symmetrically arranged between the lifting base 61 and the lifting frame 62. Each arm assembly includes a first arm 632 and a second arm 633 hinged together by a hinge shaft 631. The hinge shaft 631 has threaded holes. One end of the first arm 632 is hinged to the lifting frame 62, and the other end is hinged to one end of the second arm 633 via the hinge shaft 631. The other end of the second arm 633 is hinged to the lifting base 61. The axes of the hinge shafts 631 are both horizontal and perpendicular to the length direction of the lifting base 61. A screw 634 passes through two threaded holes and has two external threads with opposite directions of screwing. The two external threads are respectively connected to the two threaded holes. By driving the screw 634 to rotate, the screw 634 drives the two hinge shafts 631 to move closer or further apart. When the distance between the hinge shafts 631 of the arm assembly changes, the lifting frame 62 moves vertically up and down relative to the lifting base 61, thereby driving the base 1 to move up and down synchronously.

[0063] The lifting unit 6 is detachably connected to the worktable 2 via the lifting base 61, allowing the entire inspection device to be stably installed at the workpiece location, avoiding the need for transporting large workpieces. The detachable connection between the lifting frame 62 and the base 1 ensures that the base 1 can be quickly installed or removed from the lifting unit 6 according to inspection requirements. The two lifting arm assemblies 63 form a four-bar linkage through a hinge structure, allowing the height of the base 1 to be flexibly adjusted by swinging the arms to accommodate workpieces or inspection positions of different heights. This structure requires no complex power drive; the position of the base 1 can be adjusted solely through mechanical hinges, making it simple to operate and highly reliable. Compared to traditional fixed-height inspection devices, the lifting unit 6 allows the inspection device to align with the workpiece to be inspected without moving the workpiece, by adjusting the height of the base 1. This solves the problem of inspection difficulties caused by inconsistent heights of large workpieces, significantly improving the device's adaptability to workpieces of different specifications and its inspection efficiency.

[0064] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figures 1-2 As shown, the testing device also includes a fixed base 7, which is a long plate-shaped structure. Its bottom is bolted or welded to the upper surface of the base 1 and is located directly below the sliding side plate 52. A tray 71 extends vertically from the side of the fixed base 7 closest to the sliding side plate 52. The tray 71 is a horizontally arranged flat plate, and its upper surface forms a support plane for contacting the lower surface of the workpiece at the position to be measured. The length and width of the tray 71 are adapted to the dimensions of common workpiece positions to be measured. When the workpiece is placed on the worktable 2, the support plane of the tray 71 is in direct contact with the lower surface of the workpiece at the position to be measured, providing bottom support for the workpiece.

[0065] During the testing process, when the sliding side plate 52 moves the Brinell hardness tester 4 vertically, the fixed base 7 remains stationary, and the tray 71 continuously contacts the lower surface of the workpiece to be tested, ensuring that the workpiece remains stable during testing and avoiding displacement or deformation of the workpiece due to the load during indentation testing.

[0066] The fixed base 7 is mounted on the base 1 and located below the sliding side plate 52. Its tray 71 abuts against the lower surface of the workpiece to be tested, forming a bottom support structure for the workpiece. This design eliminates the need for additional workpiece fixing devices during testing. The direct contact between the tray 71 and the lower surface of the workpiece counteracts the reaction force generated by the testing load applied by the Brinell hardness tester 4 indenter, preventing the workpiece from shifting or tilting due to force, thus ensuring the stability of the workpiece position during testing. Especially for large or irregularly shaped workpieces, the supporting function of the tray 71 can effectively replace the traditional complex fixing method, simplifying the preparation work before testing, while avoiding testing errors caused by improper fixing, and improving the accuracy and reliability of Brinell hardness testing. The fixed connection between the tray 71 and the base 1 ensures the stable transmission of supporting force. Combined with the lifting and adjusting function of the sliding side plate 52, the testing device can adapt to the testing position at different heights, achieving convenient testing without moving the workpiece.

[0067] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figure 1 and Figure 4 As shown, the detection device also includes a movable base 81 and a rotating sleeve 82. The movable base 81 is disc-shaped and is rotatably connected to the upper surface of the base 1 via a centrally located rotating shaft. The axis of the rotating shaft is perpendicular to the upper surface of the base 1, allowing the movable base 81 to rotate freely in the horizontal plane around this axis. A through groove 811 is provided on the movable base 81, which radially penetrates the movable base 81. Its width is adapted to the outer diameter of the lead screw 51, allowing the lead screw 51 to pass through.

[0068] The rotating sleeve 82 has a cylindrical structure and is fitted onto the lower end of the lead screw 51. Its outer diameter is smaller than the width of the through groove 811, allowing the rotating sleeve 82 to rotate around the axis of the lead screw 51 within the through groove 811 as the movable base 81 rotates. When the movable base 81 rotates, the rotating sleeve 82, which is connected to the lead screw 51, reduces the friction between the through groove 811 and the lead screw 51. Simultaneously, the arc shape of the through groove 811 limits the rotation range of the movable base 81. When measuring the hardness of a workpiece, if the movable base 81 is not needed, it can be rotated in one direction (left or right) to allow it to move away from the workpiece, ensuring smooth measurement.

[0069] The movable base 81 is rotatably mounted on the base 1. The rotating sleeve 82 within its through groove 811 engages with the lower end of the lead screw 51, forming a rotatable connection structure. When the movable base 81 is not needed, it is rotated to avoid the workpiece, preventing interference between the movable base 81 and the workpiece and thus avoiding distortion of the measurement results. This design is suitable for irregularly shaped workpieces or scenarios where the measurement positions are irregularly distributed. Through the rotation of the movable base 81 and the engagement of the rotating sleeve 82, the measurement points at different positions on the workpiece can be quickly aligned, improving detection efficiency and flexibility.

[0070] In some examples, the structure of the portable lifting Brinell hardness testing device is optimized, for example, as... Figure 1 and Figure 4 As shown, in the detection device, the connection between the movable base 81 and the base 1 is a circular plate with several locking through holes 83. The locking through holes 83 are evenly distributed around the circumference of the movable base 81, and the diameter of the holes is adapted to the outer diameter of the locking rod 84. A locking rod 84 is fixedly installed on the upper surface of the base 1 at the position corresponding to the locking through holes 83. The locking rod 84 is a cylindrical rod. After the movable base 81 rotates, the locking rod 84 can pass through one of the locking through holes 83 and connect with the base 1. The lower end of the locking rod 84 can be engaged in a recessed hole on the base 1, or it can be fixedly connected to the base 1 by a threaded connection. The unlocking part 85 is a closed ring buckle, wherein the unlocking part 85 is hinged to the upper end of the locking rod 84.

[0071] When the movable base 81 needs to be adjusted, first rotate the unlocking member 85 to swing it upwards to a near-vertical state. When the locking rod 84 is inserted into the base 1, apply force through the unlocking member 85 to pull the locking rod 84 directly upwards. When the locking rod 84 is threadedly connected to the base 1, rotate the unlocking member 85 and drive the unlocking member 85 to rotate, thereby releasing the threaded connection between the locking rod 84 and the base 1 and pulling out the locking rod 84. Then the movable base 81 can be rotated to avoid the workpiece.

[0072] The locking through-hole 83 of the movable base 81 engages with the locking rod 84 on the base 1, and the locking and unlocking of the movable base 81 is achieved through the rotational movement of the unlocking component 85. This structural design ensures that the movable base 81 remains fixed during the testing process, avoiding positional displacement caused by external forces or vibrations, thereby ensuring the relative accuracy of the Brinell hardness tester 4 indenter and the workpiece to be tested. The knob-type operation of the unlocking component 85 is ergonomic, allowing operators to quickly complete the locking or unlocking actions and improving the efficiency of pre-test preparation. The locking through-holes 83 are evenly distributed around the circumference of the movable base 81, and different locking positions can be selected according to actual testing needs, balancing flexibility and stability. It is especially suitable for irregularly shaped workpieces that require frequent adjustments to the testing angle or position. The locking structure solves the problem of the movable base 81 not being able to be fixed after rotation, providing mechanical assurance for the stability of the testing process and the accuracy of the data.

[0073] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A portable lifting Brinell hardness testing device, characterized in that, include: The base (1) is detachably mounted on the worktable (2) for placing the workpiece; The hardness tester bracket (3) is slidably disposed on the base (1) and the hardness tester bracket (3) is used to support the Brinell hardness tester (4). A sliding adjustment unit (5) is disposed on the base (1) for adjusting the hardness tester bracket (3) and making the hardness tester bracket (3) slide relative to the base (1).

2. The portable lifting Brinell hardness testing device according to claim 1, characterized in that, The base (1) has several mounting through holes (11) for installing fastening bolts.

3. The portable lifting Brinell hardness testing device according to claim 1, characterized in that, The sliding adjustment unit (5) includes: A lead screw (51) is disposed on the base (1); The sliding side plate (52) is fixedly connected to the hardness tester bracket (3) and located above the base (1) for fixing the Brinell hardness tester (4). The sliding sleeve (53) is threadedly connected to the outer circumference of the lead screw (51) and rotatably connected to the sliding side plate (52); The transmission gear (54) is sleeved on the outer circumference of the sliding sleeve (53); Driven gear (55) is rotatably mounted on the sliding side plate (52) and meshes with the transmission gear (54). The axis of the driven gear (55) is parallel to the axis of the lead screw (51). The driving gear (56) is rotatably mounted on the sliding side plate (52) and meshes with the driven gear (55). The axis of the driving gear (56) is perpendicular to the axis of the driven gear (55), and the driving gear (56) and the driven gear (55) are connected by helical teeth meshing.

4. A portable lifting Brinell hardness testing device according to claim 3, characterized in that, The sliding adjustment unit (5) further includes: A rocker arm (57) passes through and is rotatably mounted on the sliding side plate (52), and the rocker arm (57) is fixedly connected to the drive gear (56).

5. A portable lifting Brinell hardness testing device according to claim 3, characterized in that, There are two lead screws (51) and two transmission gears (54). The two lead screws (51) are spaced apart. The driven gear (55) is located between the two transmission gears (54) and meshes with the two transmission gears (54).

6. A portable lifting Brinell hardness testing device according to claim 3, characterized in that, It also includes a lifting unit (6) for adjusting the height position of the base (1), the lifting unit (6) comprising: The lifting seat (61) is detachably mounted on the workbench (2); The lifting frame (62) is detachably connected to the lower end surface of the base (1) and located above the lifting seat (61). The lifting frame (62) is slidably disposed relative to the lifting seat (61). Two lifting arm assemblies (63) are located between the lifting seat (61) and the lifting frame (62). One end of the lifting arm assembly (63) is hinged to the lifting frame (62), and the other end is hinged to the lifting seat (61).

7. A portable lifting Brinell hardness testing device according to claim 6, characterized in that, The lifting arm assembly (63) includes a first arm (632) and a second arm (633) that are hinged together by means of a hinge shaft (631). The hinge shaft (631) is provided with threaded holes, and the two threaded holes have internal threads with opposite directions of rotation. A screw spool (634) is connected to the internal thread of the threaded hole. The screw spool (634) has two external threads with opposite directions of rotation, and the two external threads are respectively threaded to the two screw spools (634).

8. A portable lifting Brinell hardness testing device according to claim 6, characterized in that, Also includes: A fixed base (7) is disposed on the base (1) and located below the sliding side plate (52). The fixed base (7) has a tray (71) on the side near the sliding side plate (52), and the tray (71) abuts against the lower surface of the position to be measured on the workpiece.

9. A portable lifting Brinell hardness testing device according to claim 6, characterized in that, Also includes: The movable base (81) is rotatably mounted on the base (1) and has a through groove (811) for the lead screw (51) to pass through. The movable base (81) has a tray (71) on the side near the sliding side plate (52), and the tray (71) abuts against the lower surface of the position to be measured on the workpiece. The rotating sleeve (82) is sleeved on the lower end of the lead screw (51) and is slidably disposed in the through groove (811).

10. A portable lifting Brinell hardness testing device according to claim 9, characterized in that, The movable base (81) has several locking through holes (83) and also includes: A locking rod (84) passes through the locking through hole (83) and is disposed on the base (1); The unlocking component (85) is hinged to the locking rod (84) and located above the movable base (81).

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