A device for testing the weight of a dumbbell

Abstract

The utility model discloses a device for testing dumbbell gravity, including installation frame, be provided with interval adjusting mechanism in the installation frame, be provided with clamping mechanism on interval adjusting mechanism, interval adjusting mechanism includes first screw rod and second screw rod, first screw rod and second screw rod all are through bearing rotation connection in the inner wall of installation frame, first screw rod and second screw rod are respectively screw -threaded connection with moving block, compared with prior art, the utility model has the advantages of, through being provided with interval adjusting mechanism, can according to the length specification of different models dumbbell, the interval of two -sided clamping mechanism is adjusted fast, ensure that it always realizes the best matching with the handlebar both ends of dumbbell, this function makes a single equipment can be widely adapted to from short compact to super long specification full series product.

Description

Technical Field

[0001] This utility model relates to the field of dumbbell gravity technology, and in particular to a device for testing the gravity of dumbbells. Background Technology

[0002] In the field of dumbbell manufacturing and quality inspection, testing its total weight and the uniformity of weight distribution at both ends is a key step in ensuring product quality.

[0003] Currently, some testing devices have obvious limitations: First, they usually lack convenient spacing adjustment functions, making it difficult to quickly adapt to dumbbells of different lengths, resulting in poor equipment versatility and low production line changeover efficiency; Second, traditional clamping methods are mostly rigid contact, lacking effective buffering and protection mechanisms, which can easily cause scratches, indentations, and other damage to the surface coating or structure of the dumbbell during testing, affecting the final appearance and value of the product. Utility Model Content

[0004] In view of the above problems, the technical problem to be solved by this utility model is to provide a device for testing the weight of dumbbells.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a device for testing the weight of dumbbells, comprising a mounting frame, characterized in that: a spacing adjustment mechanism is provided inside the mounting frame, and a clamping mechanism is provided on the spacing adjustment mechanism; the spacing adjustment mechanism includes a first lead screw and a second lead screw, both of which are rotatably connected to the inner wall of the mounting frame through bearings, and movable blocks are threadedly connected to the first lead screw and the second lead screw respectively; the clamping mechanism includes a support platform, the support platform is fixed to the top of the movable block, a placement plate is fixedly installed on the support platform, a hydraulic weighing sensor is provided on the placement plate, a first vertical plate and a second vertical plate are provided at the bottom of the support platform, a common sliding rod is fixedly installed between the first vertical plate and the second vertical plate, a first sliding frame and a second sliding frame are slidably arranged on the sliding rod, an electric push rod is fixedly installed on the side of the first vertical plate, and the push rod end of the electric push rod is fixedly connected to the second sliding frame.

[0006] A further preferred embodiment of this utility model is as follows: a support leg is fixed to the bottom end of the mounting frame, a motor is fixedly mounted on the side of the mounting frame, the motor is horizontally positioned, and the end of the motor's shaft passes through the mounting frame and is fixedly connected to one end of a single lead screw.

[0007] A further preferred embodiment of this utility model is that the threads of the first lead screw and the second lead screw are opposite in direction, and the first lead screw and the second lead screw are connected by a coupling.

[0008] A further preferred embodiment of this utility model is: a limiting rod is fixedly installed on the inner wall of the mounting frame, the limiting rod is cylindrical in shape, the limiting rod is horizontally arranged, and the moving block slides on the limiting rod.

[0009] A further preferred embodiment of this utility model is as follows: a gear roller is rotatably connected to the bottom end of the support platform, and teeth are provided on the inner walls of the first slide frame and the second slide frame. The first slide frame meshes with the gear roller through the teeth, and the second slide frame meshes with the gear roller through the teeth.

[0010] A further preferred embodiment of this utility model is: a limiting groove is provided on the support platform, and a slider is fixed at the top of both the first slide frame and the second slide frame. The slider slides on the inner wall of the limiting groove, and a mounting plate is fixed at the top of the slider.

[0011] A further preferred embodiment of this utility model is as follows: a limiting pin is slidably provided on the mounting plate, a clamping plate is provided at one end of the limiting pin, a rubber anti-slip pad is provided on the clamping plate, a spring is fixedly fixed on the side of the clamping plate, and one end of the spring is fixedly connected to the mounting plate.

[0012] Compared with the prior art, the present invention has the following advantages: 1. This utility model, by setting a spacing adjustment mechanism, can quickly adjust the spacing of the clamping mechanisms on both sides according to the length specifications of different dumbbell models, ensuring that it always achieves the best match with the two ends of the dumbbell's grip bar. This function allows a single device to be widely adapted to a full range of products from short and compact to extra-long specifications without replacing any parts, greatly improving the equipment's versatility and the production line's rapid changeover capability. 2. This utility model, by setting up a clamping mechanism, facilitates the clamping and centering of dumbbells. In conjunction with a hydraulic weighing sensor, it is used to test the weight of both ends of the dumbbell. The springs built into the mechanism work together with the rubber anti-slip pads to form a flexible clamping force. This not only effectively avoids the rigid clamping plate from causing scratches or indentations on the surface of the dumbbell, perfectly protecting the appearance quality of the product, but also ensures stable centering during the clamping process and prevents slippage. Attached Figure Description

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0014] Figure 1This is a schematic diagram of the overall structure of a device for testing the weight of dumbbells. Figure 2 A schematic diagram of a coupling for a device used to test the weight of a dumbbell; Figure 3 A schematic diagram of a support platform for a device used to test the weight of dumbbells; Figure 4 A schematic diagram of a gear roller in a device for testing the weight of a dumbbell; Figure 5 An exploded view of a limit pin in a device for testing the weight of a dumbbell.

[0015] In the diagram: 1. Mounting frame; 21. Motor; 22. Second lead screw; 23. First lead screw; 24. Moving block; 25. Limiting rod; 26. Coupling; 31. Support platform; 32. Hydraulic load cell; 33. Placement plate; 34. First vertical plate; 35. Limiting groove; 36. Mounting plate; 37. Slide rod; 38. Second slide frame; 39. First slide frame; 310. Second vertical plate; 311. Gear roller; 312. Slider; 313. Electric push rod; 314. Limiting pin; 315. Rubber anti-slip pad; 316. Spring; 317. Clamping plate; 4. Support leg. Detailed Implementation

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0017] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

[0018] This embodiment mainly describes a device for testing the weight of dumbbells, as detailed below: like Figures 1-5As shown, a device for testing the weight of a dumbbell includes a mounting frame 1. A spacing adjustment mechanism is provided within the mounting frame 1. This mechanism allows adjustment of the spacing between the clamping mechanisms on both sides according to the length of the dumbbell, facilitating the testing of the weight at both ends of the dumbbell. The spacing adjustment mechanism is equipped with clamping mechanisms for easy clamping and centering of the dumbbell. In conjunction with a hydraulic weighing sensor 32, it is used to test the weight at both ends of the dumbbell. The clamping mechanisms are equipped with a spring 316 and a rubber anti-slip pad 315 to prevent slippage from the clamping plate 317. The dumbbell was damaged due to hard contact. The spacing adjustment mechanism includes a first lead screw 23 and a second lead screw 22. Both the first lead screw 23 and the second lead screw 22 are rotatably connected to the inner wall of the mounting frame 1 through bearings. The first lead screw 23 and the second lead screw 22 are used to drive the moving block 24 to slide linearly along the surface of the limiting rod 25. The first lead screw 23 and the second lead screw 22 are respectively threaded with moving blocks 24. There are two moving blocks 24, and they are square blocks. The moving blocks 24 are used to support the installation of the support platform 31. The clamping mechanism includes a support platform 31, which is fixed to the top of the movable block 24. The support platform 31 is used to support the installation of the placement plate 33. The placement plate 33 is fixedly installed on the support platform 31 and is used to place the end of the dumbbell. A hydraulic weighing sensor 32 is provided on the placement plate 33. The hydraulic weighing sensor 32 is existing known technology and will not be described in detail. The bottom end of the support platform 31 is provided with a first vertical plate 34 and a second vertical plate 310. The first vertical plate 34 and the second vertical plate 310 are used to support... With the installation of the sliding rod 37, the same sliding rod 37 is fixedly installed between the first vertical plate 34 and the second vertical plate 310. The sliding rod 37 is designed to support the sliding of the first sliding frame 39 and the second sliding frame 38. The first sliding frame 39 and the second sliding frame 38 are slidably mounted on the sliding rod 37. An electric push rod 313 is fixedly installed on the side of the first vertical plate 34. The push rod end of the electric push rod 313 is fixedly connected to the second sliding frame 38. The electric push rod 313 is designed to drive the second sliding frame 38 to slide linearly along the surface of the sliding rod 37.

[0019] The bottom of the mounting frame 1 is fixed with a support leg 4, and the side of the mounting frame 1 is fixed with a motor 21. The motor 21 is horizontally set and has forward and reverse rotation functions. The motor 21 is set to drive the first lead screw 23 to rotate. The shaft end of the motor 21 passes through the mounting frame 1 and is fixedly connected to one end of the single lead screw 23.

[0020] The first lead screw 23 and the second lead screw 22 have opposite thread directions. By setting the first lead screw 23 and the second lead screw 22 with opposite thread directions, it is convenient to drive the moving blocks 24 on both sides to slide in opposite directions along the surface of the limiting rod 25. The first lead screw 23 and the second lead screw 22 are connected by a coupling 26. The coupling 26 is set to transmit power.

[0021] A limiting rod 25 is fixedly installed on the inner wall of the mounting frame 1. The limiting rod 25 is cylindrical in shape. The limiting rod 25 is set to limit the movement of the moving block 24. The limiting rod 25 is set horizontally, and the moving block 24 slides on the limiting rod 25.

[0022] The bottom end of the support 31 is rotatably connected to a gear roller 311. The gear roller 311 is configured to mesh with the first slide frame 39 and the second slide frame 38 respectively. The inner walls of the first slide frame 39 and the second slide frame 38 are provided with teeth. The first slide frame 39 meshes with the gear roller 311 through the teeth, and the second slide frame 38 meshes with the gear roller 311 through the teeth.

[0023] A limiting groove 35 is provided on the support platform 31. The limiting groove 35 is a strip-shaped through groove. The top of the first sliding frame 39 and the second sliding frame 38 are both fixed with sliders 312. The sliders 312 are set to support the installation of the mounting plate 36. The sliders 312 slide on the inner wall of the limiting groove 35. The top of the sliders 312 is fixed with the mounting plate 36. The mounting plate 36 is set to support the sliding of the limiting pin 314.

[0024] A limit pin 314 is slidably mounted on the mounting plate 36. The limit pin 314 is used to support the installation of the clamping plate 317. The clamping plate 317 is mounted on one end of the limit pin 314. The clamping plate 317 is used to clamp the end of the dumbbell. The clamping plate 317 is equipped with a rubber anti-slip pad 315. The rubber anti-slip pad 315 not only has an anti-slip function, but also has a cushioning performance to prevent the clamping plate 317 from making hard contact with the dumbbell. A spring 316 is fixed to the side of the clamping plate 317. One end of the spring 316 is fixedly connected to the mounting plate 36. The spring 316 has a cushioning function.

[0025] When the dumbbells need to be weighed, the motor 21 is started according to the length of the dumbbells. The motor 21 drives the first lead screw 23 to rotate. When the first lead screw 23 rotates, it will drive the second lead screw 22 to rotate through the coupling 26. Since the threads of the first lead screw 23 and the second lead screw 22 are opposite, when the first lead screw 23 and the second lead screw 22 rotate, they will drive the moving blocks 24 on both sides to move in a straight line towards each other along the surface of the limit rod 25. When the moving blocks 24 on both sides move towards each other, they will drive the clamping mechanisms on both sides to move towards each other until the clamping mechanisms on both sides move to the appropriate distance.

[0026] After adjusting the spacing of the clamping mechanism, place the ends of the dumbbells onto the placement plates 33 on the two side supports 31 respectively, and activate the electric push rod 313. The electric push rod 313 will drive the second sliding frame 38 to slide linearly along the surface of the sliding rod 37. When the second sliding frame 38 slides linearly, it will drive the gear roller 311 to rotate through the teeth on its inner wall. When the gear roller 311 rotates, it will drive the first sliding frame 39 to slide linearly along the surface of the sliding rod 37, as shown in the attached figure. Figure 4 As shown, the first sliding frame 39 and the second sliding frame 38 will move towards each other. When the first sliding frame 39 and the second sliding frame 38 move towards each other, the slider 312, the mounting plate 36 and the limit pin 314 will drive the two clamping plates 317 to move towards each other until the two clamping plates 317 clamp and center the end of the dumbbell so that the hydraulic weighing sensor 32 can weigh the end of the dumbbell. The clamping end is provided with a spring 316 and an anti-slip pad 315 to buffer and prevent slippage, thus avoiding hard contact between the clamping plate 317 and the dumbbell.

[0027] After the dumbbells are clamped, the two ends of the dumbbells are weighed and the data is recorded by the hydraulic weighing sensors 32 on both sides. Then, the total weight and the difference between the two ends are calculated based on the data, and the dumbbells are judged to meet the standard.

[0028] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0029] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not 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.

[0030] The title provided above provides a detailed description of the present utility model. Specific examples have been used to illustrate the principles and implementation methods of the present utility model. The description of the above embodiments is only for the purpose of helping to understand the present utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to the present utility model without departing from the principles of the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A device for testing the weight of a dumbbell, comprising a mounting frame, characterized in that: The mounting frame is provided with a spacing adjustment mechanism, and the spacing adjustment mechanism is provided with a clamping mechanism; The spacing adjustment mechanism includes a first lead screw and a second lead screw. Both the first lead screw and the second lead screw are rotatably connected to the inner wall of the mounting frame via bearings. Moving blocks are threaded onto the first lead screw and the second lead screw respectively. The clamping mechanism includes a support platform, which is fixed to the top of the movable block. A placement plate is fixedly installed on the support platform, and a hydraulic weighing sensor is provided on the placement plate. A first vertical plate and a second vertical plate are provided at the bottom of the support platform. A common sliding rod is fixedly installed between the first vertical plate and the second vertical plate. A first sliding frame and a second sliding frame are slidably arranged on the sliding rod. An electric push rod is fixed to the side of the first vertical plate, and the push rod end of the electric push rod is fixedly connected to the second sliding frame.

2. The device for testing the weight of a dumbbell according to claim 1, characterized in that: The bottom end of the mounting frame is fixed with a support leg, and the side of the mounting frame is fixedly mounted with a motor. The motor is horizontally positioned, and the end of the motor shaft passes through the mounting frame and is fixedly connected to one end of a single lead screw.

3. The device for testing the weight of a dumbbell according to claim 1, characterized in that: The first lead screw and the second lead screw have opposite thread directions, and the first lead screw and the second lead screw are connected by a coupling.

4. The device for testing the weight of a dumbbell according to claim 1, characterized in that: A limiting rod is fixedly installed on the inner wall of the mounting frame. The limiting rod is cylindrical and horizontally positioned. The moving block slides on the limiting rod.

5. The device for testing the weight of a dumbbell according to claim 1, characterized in that: The bottom end of the support is rotatably connected to a gear roller. The inner walls of the first slide frame and the second slide frame are both provided with teeth. The first slide frame meshes with the gear roller through the teeth, and the second slide frame meshes with the gear roller through the teeth.

6. The device for testing the weight of a dumbbell according to claim 1, characterized in that: A limiting groove is provided on the support platform. A slider is fixed at the top of both the first and second sliding frames. The slider slides on the inner wall of the limiting groove. A mounting plate is fixed at the top of the slider.

7. The device for testing the weight of a dumbbell according to claim 6, characterized in that: A limit pin is slidably provided on the mounting plate. A clamping plate is provided at one end of the limit pin. A rubber anti-slip pad is provided on the clamping plate. A spring is fixed to the side of the clamping plate. One end of the spring is fixedly connected to the mounting plate.

Images