CN222784398U

CN222784398U - A hardness testing device for weights

Info

Publication number: CN222784398U
Application number: CN202421168279.XU
Authority: CN
Inventors: 卜晓雪; 厉冰心; 高颖; 卜瑞娟; 石磊; 石春梅; 张旭龙
Original assignee: Henan Institute Of Metrology And Testing Science
Current assignee: Henan Institute Of Metrology And Testing Science
Priority date: 2024-05-27
Filing date: 2024-05-27
Publication date: 2025-04-22
Anticipated expiration: 2034-05-27

Abstract

The utility model relates to the technical field of hardness testing, and discloses a hardness testing device of weights, which comprises a testing table, wherein an upright post is fixedly arranged at the top of the testing table, and a pressure head is arranged at the front side of the upright post. According to the utility model, through the operation of the motor, when the gear rotates positively, the pressure head is pressed down to perform hardness test, when the gear rotates reversely, the brake block is meshed with the ratchet wheel, and the ratchet wheel rotates at the moment, so that the weight sample at the top of the roll shaft is transported for a short distance through the transmission of the synchronous belt.

Description

Hardness testing device of weight

Technical Field

The utility model relates to the technical field of hardness testing, in particular to a hardness testing device for weights.

Background

Weights are standard objects for measuring mass or weight, generally having known, accurate mass values, and are widely used in the field of physics and engineering in balances, scales and other measuring devices to ensure the accuracy of the measurement.

Since the hardness of the weight directly affects its quality and shape stability, if the weight is too soft, it may be deformed during use, resulting in inaccurate measurement, and after frequent or long-term use, the surface of the weight may be worn out by contact with other objects, and if the hardness of the weight is insufficient, such wear may be more remarkable, resulting in quality loss and measurement error, thus requiring a hardness testing device for the weight.

The current weight hardness testing device usually evaluates the hardness of a material by applying a certain pressure on the surface of the weight and then observing or measuring the indentation, scratch or deformation generated on the surface of the weight, and at present, when the weight is tested, the hardness characteristics of the material may not be fully reflected by single measurement because of the difference of the hardness characteristics of the material due to the factors of position, organization structure, preparation process and the like, and multiple tests are required, which can lead to the fact that the current test position of the weight needs to be frequently determined when the weight is tested, and the position of the weight needs to be adjusted after the test is completed, so that repeated measurement of a weight sample by a pressure head is avoided, but frequent adjustment of the position of the weight can result in heavy workload, time consumption and labor consumption of the hardness test, and therefore the improvement and the optimization are required.

Disclosure of utility model

In order to overcome the defects in the prior art, the utility model provides a hardness testing device for weights, which has the advantages of multiple tests, time saving and labor saving.

The technical scheme is that the hardness testing device of the weight comprises a testing table, wherein an upright post is fixedly arranged at the top of the testing table, a pressure head is arranged at the front side of the upright post, and the pressure head and the testing table are connected with each other through a connecting wire;

The inside fixed mounting of testboard has the motor, the output shaft and the first fixed connection of gear of motor, the first rotation of gear is installed in the inside rear side of testboard, the inside front side of testboard rotates and installs the gear two gear one and gear two pass through the drive belt transmission and connect, the inside of gear two is provided with the ratchet, the ratchet rotates and installs in the inside front side of testboard, the inside of gear two rotates and installs the brake shoe, the inner wall of brake shoe and gear two passes through a spring elastic connection, the brake shoe is contradicted each other through spring one and ratchet, the top fixed mounting of ratchet has transfer line two, the fixed removal groove that has seted up in top of testboard, the inside rotation of removal groove installs the roller, the inside front side of testboard is fixed and is provided with the fixed slot, the fixed slot is located the removal groove front side.

As a preferable technical scheme of the utility model, a first pressing plate is fixedly arranged on the rear side of the top of the test bench, a second pressing plate is fixedly arranged on the front side of the top of the test bench, and the first pressing plate and the second pressing plate are positioned on the front side and the rear side of the top of the movable groove.

As a preferable technical scheme of the utility model, the top of the transmission rod II penetrates into the fixing groove and is fixedly connected with the transmission wheel II, the transmission wheel II is rotatably arranged at the bottom of the inner wall of the fixing groove, the transmission wheel I is rotatably arranged at the rear side of the inner wall of the fixing groove, and the transmission wheel I is in transmission connection with the transmission wheel II.

As a preferable technical scheme of the utility model, the roll shafts are seven groups in total, the front sections of the seven groups of roll shafts are fixedly provided with transmission shafts, the transmission shafts are rotatably arranged on the inner wall of the movable groove, the seven groups of transmission shafts are in transmission connection through a synchronous belt, and the front ends of the transmission shafts positioned in the middle of the movable groove are fixedly connected with a transmission wheel I.

As a preferable technical scheme of the utility model, a screw rod is rotatably arranged in the upright post, the screw rod is in threaded sleeve connection with a moving block, the moving block is fixedly connected with a pressing head, the bottom of the screw rod is fixedly connected with a first transmission rod, and the first transmission rod penetrates into the test bench and is fixedly connected with a first gear.

As a preferable technical scheme of the utility model, the front end of the second pressing plate is fixedly provided with a fixed cylinder, the fixed cylinder is movably provided with a guide plate, the inside of the fixed cylinder is elastically provided with a second spring, and the guide plate is elastically connected with the inner wall of the fixed cylinder through the second spring.

As a preferable technical scheme of the utility model, a fixed pressing block is fixedly arranged in the gear II, and the fixed pressing block is positioned on the side surface of the brake block.

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

1. According to the utility model, through the operation of the motor, the first gear rotates positively and reversely, the pressure head presses down to perform hardness test, when the first gear rotates reversely, the brake block and the ratchet wheel are meshed with each other, and the ratchet wheel rotates at the moment, so that the weight sample at the top of the roll shaft is transported for a short distance through the transmission of the synchronous belt.

2. According to the utility model, the guide plate is enabled to move towards the first pressing plate through the elastic potential energy of the second spring, and the two sides of the weight sample are clamped by matching with the first pressing plate.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the internal structure of the column according to the present utility model;

FIG. 4 is a schematic view of a roll shaft structure according to the present utility model;

FIG. 5 is a schematic diagram of a gear II according to the present utility model;

FIG. 6 is a schematic view of the internal structure of the gear II of the present utility model;

fig. 7 is a schematic view of a guide plate structure according to the present utility model.

The device comprises a test bench 1, a stand column 2, a pressure head 3, a connecting wire 4, a 5, a motor 6, a first transmission rod 7, a first gear 8, a second gear 9, a transmission belt 10, a ratchet wheel 11, a fixed pressing block 12, a brake block 13, a first spring 14, a fixed groove 15, a second transmission rod 16, a first transmission wheel 17, a second transmission wheel 18, a transmission shaft 19, a moving groove 20, a roll shaft 21, a synchronous belt 22, a screw rod 23, a moving block 24, a first pressing plate 25, a second pressing plate 26, a guide plate 27, a fixed cylinder 28 and a second spring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 to 7, the utility model provides a hardness testing device of weights, which comprises a testing table 1, wherein an upright post 2 is fixedly arranged at the top of the testing table 1, a pressure head 3 is arranged at the front side of the upright post 2, and the pressure head 3 and the testing table 1 are connected with each other through a connecting wire 4;

The inside fixed mounting of testboard 1 has motor 5, motor 5's output shaft and gear one 7 fixed connection, gear one 7 rotates to be installed in testboard 1's inside rear side, gear two 8 gear one 7 and gear two 8 are connected through the transmission of drive belt 9 to the inside front side rotation of testboard 1, the inside of gear two 8 is provided with ratchet 10, ratchet 10 rotates to be installed in testboard 1's inside front side, brake shoe 12 is installed in gear two 8's inside rotation, brake shoe 12 and gear two 8's inner wall passes through spring one 13 elastic connection, brake shoe 12 is contradicted each other through spring one 13 and ratchet 10, transfer line two 15 are installed to ratchet 10's top fixed mounting, the fixed removal groove 19 that has seted up in testboard 1's top, the roller 20 is installed in the inside rotation of removal groove 19, testboard 1's inside front side is fixed to be provided with fixed slot 14, the fixed slot 14 is located removal groove 19 front side.

When the hardness test is required for the weight, the worker firstly selects the weight sample, then pulls the guide plate 26, the second spring 28 is extruded at the moment, the worker can place the weight sample at the bottom of the pressure head 3 and ensure that the weight sample is positioned at the top of the roller shaft 20, then the worker releases the guide plate 26, the guide plate 26 is displaced towards the first pressing plate 24 through the elastic potential energy of the second spring 28, and clamps the two sides of the weight sample to avoid the deflection of the weight sample, then the worker starts the motor 5, the operation of the motor 5 drives the first gear 7 to rotate, the rotation of the first gear 7 drives the first transmission rod 6 to rotate, the rotation of the first transmission rod 6 drives the screw 22 to rotate, the moving block 23 is further downwards displaced in the upright 2, the pressure head 3 is downwards pressed to the surface of the weight sample, the first test is completed, meanwhile, the rotation of the first gear 7 drives the second gear 8 to rotate through the transmission belt 9, the rotation of the second gear 8 drives the brake block 12 to displace, but due to the characteristic of the ratchet wheel 10, the first spring 13 can be extruded when the brake block 12 moves, the brake block 12 cannot drive the brake block 12 to rotate, after the first test is finished, the working personnel drives the motor 5 to rotate reversely, the reversing of the motor 5 lifts the pressure head 3, the second gear 8 starts to rotate reversely, the reversing of the second gear 8 drives the brake block 12 to move circumferentially, at the moment, the brake block 12 can be meshed with the ratchet wheel 10, the ratchet wheel 10 rotates, the ratchet wheel 10 drives the transmission wheel 17 to rotate through the transmission rod 15, at the moment, the transmission wheel 16 rotates, the transmission shaft 18 rotates, the roll shaft 20 rotates through the transmission of the synchronous belt 21, and weight samples at the top of the roll shaft 20 are transported for a short distance, the detected position is further changed, and the weight sample cannot deviate when moving through the guide plate 26 and the first pressing plate 24, so that a worker can detect the weight sample for multiple times by controlling the operation of the motor 5.

Through the operation of motor 5, make gear one 7 carry out corotation and reversal, when gear one 7 corotation, pressure head 3 pushes down and carries out hardness test, when gear one 7 reversal, brake shoe 12 and ratchet 10 intermeshing, and ratchet 10 rotates this moment, further through the transmission of hold-in range 21, make the weight sample at roller 20 top carry out the transportation of short distance, compared with traditional device, the device can make pressure head 3 push down and carry out the test through the operation of control motor 5, and when pressure head 3 resets, roller 20 drives the weight sample and removes, the position that detects changes this moment, can realize carrying out hardness test many times to different positions, work burden has been alleviateed when having guaranteed the accuracy of test, detection efficiency has been improved.

Wherein, the top rear side of test bench 1 is fixed mounting has clamp plate one 24, and the top front side of test bench 1 is fixed mounting has clamp plate two 25, and clamp plate one 24 and clamp plate two 25 are located the front and back both sides at removal groove 19 top.

The staff selects the weight sample earlier, then pulls deflector 26, and spring two 28 is extrudeed this moment to the staff can place the weight sample in the bottom of pressure head 3, and ensures that it is located roller 20 top, then the staff unclamps deflector 26, through the elastic potential energy of spring two 28, the deflector 26 is to clamp plate one 24 displacement to cooperate clamp plate one 24, with the both sides centre gripping of weight sample, avoid the weight sample skew.

Through the elastic potential energy of spring two 28, make deflector 26 to clamp plate one 24 displacement to cooperate clamp plate one 24, with the both sides centre gripping of weight sample, compare with traditional device, the device is restricted the weight sample both sides through deflector 26 and clamp plate one 24, makes the weight sample can not take place the skew when removing, the effectual fixed time of having saved has improved test efficiency.

The top of the transmission rod II 15 penetrates through the fixing groove 14 and is fixedly connected with the transmission wheel II 17, the transmission wheel II 17 is rotatably arranged at the bottom of the inner wall of the fixing groove 14, the transmission wheel I16 is rotatably arranged at the rear side of the inner wall of the fixing groove 14, and the transmission wheel I16 is in transmission connection with the transmission wheel II 17.

The ratchet 10 drives the driving wheel II 17 to rotate through the driving rod II 15, at the moment, the driving wheel I16 rotates to drive the driving shaft 18 to rotate, and the rotation of the driving shaft 18 drives the roll shaft 20 to rotate through the transmission of the synchronous belt 21.

The seven groups of roll shafts 20 are all seven groups, the transmission shafts 18 are fixedly arranged at the front sections of the seven groups of roll shafts 20, the transmission shafts 18 are rotatably arranged on the inner wall of the movable groove 19, the seven groups of transmission shafts 18 are in transmission connection through the synchronous belt 21, and the front ends of the transmission shafts 18 positioned in the middle of the movable groove 19 are fixedly connected with the first transmission wheel 16.

When the first driving wheel 16 rotates, the driving shaft 18 rotates, the rotation of the driving shaft 18 drives the roll shaft 20 to rotate through the transmission of the synchronous belt 21, the weight sample at the top of the roll shaft 20 is transported for a short distance, and the detected position is further changed.

The inside rotation of stand 2 installs lead screw 22, and lead screw 22 and movable block 23 screw thread cup joint, and movable block 23 and pressure head 3 fixed connection, the bottom and the transmission pole one 6 fixed connection of lead screw 22, transmission pole one 6 run through to the inside of testboard 1, and with gear one 7 fixed connection.

The staff starts motor 5, and the operation of motor 5 drives gear one 7 and rotates, and the rotation of gear one 7 makes transfer line one 6 rotatory to the rotation of transfer line one 6 drives lead screw 22 rotation, further makes movable block 23 at the inside downward displacement of stand 2, and pressure head 3 pushes down to the surface of weight sample, accomplishes the first test.

The front end of the second pressing plate 25 is fixedly provided with a fixed cylinder 27, the fixed cylinder 27 is movably provided with a guide plate 26, a second spring 28 is elastically arranged in the fixed cylinder 27, and the guide plate 26 is elastically connected with the inner wall of the fixed cylinder 27 through the second spring 28.

Wherein, the inside fixed mounting of gear two 8 has fixed briquetting 11, and fixed briquetting 11 is located brake block 12 side.

The provision of the fixed press 11 ensures the engagement between the brake block 12 and the ratchet 10.

The working principle and the using flow of the utility model are as follows:

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The hardness testing device of the weight comprises a testing table (1) and is characterized in that an upright post (2) is fixedly arranged at the top of the testing table (1), a pressure head (3) is arranged at the front side of the upright post (2), and the pressure head (3) and the testing table (1) are connected with each other through a connecting wire (4);

The inside fixed mounting of testboard (1) has motor (5), the output shaft and the first (7) fixed connection of gear of motor (5), the inside rear side in testboard (1) is installed in the rotation of first (7) rotation of gear, install second (8) in the rotation of inside front side of testboard (1) gear first (7) and second (8) pass through drive belt (9) transmission and connect, the inside of second (8) is provided with ratchet (10), ratchet (10) rotate and install in the inside front side of testboard (1), the inside rotation of second (8) of gear installs brake shoe (12), the inner wall of brake shoe (12) and second (8) is through first (13) elastic connection of spring, brake shoe (12) are contradicted each other through first (13) and ratchet (10), the top fixed mounting of ratchet (10) has transfer line second (15), the fixed movement groove (19) that has seted up in the top of testboard (1), the inside rotation groove (19) is provided with in the inside rotation groove (14), the inside rotation groove (14) is located fixed groove (14).

2. The device for testing the hardness of the weight according to claim 1, wherein a first pressing plate (24) is fixedly arranged on the rear side of the top of the test table (1), a second pressing plate (25) is fixedly arranged on the front side of the top of the test table (1), and the first pressing plate (24) and the second pressing plate (25) are positioned on the front side and the rear side of the top of the moving groove (19).

3. The device for testing the hardness of the weight according to claim 1, wherein the top of the transmission rod II (15) penetrates into the fixing groove (14) and is fixedly connected with the transmission wheel II (17), the transmission wheel II (17) is rotatably arranged at the bottom of the inner wall of the fixing groove (14), the transmission wheel I (16) is rotatably arranged at the rear side of the inner wall of the fixing groove (14), and the transmission wheel I (16) is in transmission connection with the transmission wheel II (17).

4. The device for testing the hardness of weights according to claim 1, wherein seven groups of roller shafts (20) are arranged in total, transmission shafts (18) are fixedly arranged at the front sections of the seven groups of roller shafts (20), the transmission shafts (18) are rotatably arranged on the inner wall of a moving groove (19), the seven groups of transmission shafts (18) are in transmission connection through a synchronous belt (21), and the front ends of the transmission shafts (18) positioned in the middle of the moving groove (19) are fixedly connected with a first transmission wheel (16).

5. The device for testing the hardness of the weight according to claim 1, wherein a screw rod (22) is rotatably arranged in the upright post (2), the screw rod (22) is in threaded sleeve connection with a moving block (23), the moving block (23) is fixedly connected with the pressing head (3), the bottom of the screw rod (22) is fixedly connected with a first transmission rod (6), and the first transmission rod (6) penetrates into the test bench (1) and is fixedly connected with a first gear (7).

6. The device for testing the hardness of the weight according to claim 2, wherein a fixed cylinder (27) is fixedly arranged at the front end of the second pressing plate (25), a guide plate (26) is movably arranged on the fixed cylinder (27), a second spring (28) is elastically arranged in the fixed cylinder (27), and the guide plate (26) is elastically connected with the inner wall of the fixed cylinder (27) through the second spring (28).

7. The device for testing the hardness of the weight according to claim 1, wherein a fixed pressing block (11) is fixedly arranged in the gear II (8), and the fixed pressing block (11) is positioned on the side face of the brake block (12).