Spring testing machine

Abstract

A spring testing machine comprises a base arranged at the bottom, a fixing block arranged at the top end of the base, a tension sensor installed above the fixing block and hooks installed at the bottom end of the tension sensor and the top end of the fixing block, and further comprises an adjusting mechanism and a protection mechanism. A protection mechanism is mounted on one side of the adjusting mechanism; the adjusting mechanism comprises a shell, a guide hole and a lifting beam, the shell is fixed to one end of the base, a lead screw is installed in the middle of the shell, two guide columns are symmetrically fixed to the two sides of the lead screw, a servo motor is installed at one end of the lead screw, lifting blocks are installed on the lead screw and the guide columns, and screw holes are formed in the positions, corresponding to the lead screw, of the lifting blocks. The spring tensile experiment device is novel in structure, ingenious in conception and easy and convenient to operate, a tensile experiment can be conveniently carried out on a spring, the arranged protective cover can protect the spring when the spring is subjected to the tensile experiment, and the spring tensile experiment device is beneficial to being used in the spring experiment.

Description

Technical Field

[0001] The utility model relates to a testing machine, in particular to a spring testing machine. Background Art

[0002] A spring is a mechanical part that uses elasticity to work. It is a part made of elastic material that deforms under the action of external force and returns to its original shape after the external force is removed. Most springs are made of steel. There are many types of springs. According to their shape, there are mainly coil springs, scroll springs, leaf springs, special-shaped springs, etc.

[0003] For finished springs, various tests are required, among which the spring stiffness coefficient test is particularly important. However, the equipment on the market that automatically tests the spring stiffness coefficient is relatively complex in structure and has a high production cost. Therefore, most factories that use springs often do not purchase such equipment to test the springs. At the same time, there are no good protective measures during the experiment, which is not conducive to use. Utility Model Content

[0004] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a spring testing machine, which effectively solves the problem that the equipment for automatically testing the spring stiffness coefficient on the market is relatively complex in structure and has a high production cost. Therefore, most factories using springs often do not purchase such equipment to test the springs. At the same time, there are no good protective measures during the experiment, which is not conducive to use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the utility model includes a base arranged at the bottom, a fixed block arranged at the top of the base, a tension sensor installed above the fixed block, and hooks installed at the bottom of the tension sensor and the top of the fixed block, and also includes an adjustment mechanism and a protection mechanism, wherein the adjustment mechanism is installed at the top of one end of the base, and the protection mechanism is installed on one side of the adjustment mechanism;

[0006] The adjustment mechanism includes a shell, a screw, a guide column, a servo motor, a lifting block, a wire hole, a guide hole and a lifting beam. The shell is fixed to one end of the base, a screw is installed in the middle of the shell, two guide columns are symmetrically fixed on both sides of the screw, a servo motor is installed at one end of the screw, a lifting block is installed on the screw and the guide column, a wire hole is opened at the position of the lifting block corresponding to the screw, a guide hole is opened at the position of the lifting block corresponding to the guide column, a lifting beam is fixed in the middle of one side of the lifting block, and a tension sensor is installed at the bottom of one end of the lifting beam;

[0007] The protection mechanism comprises a protection cover, a hinge, a loading and unloading door and a groove. The protection cover is fixed on the outside of the fixed block, and the loading and unloading door is installed on the middle part of the outside of the protection cover through a hinge.

[0008] Preferably, the tension sensor is electrically connected to an external data acquisition device.

[0009] Preferably, the data acquisition device is a computer.

[0010] Preferably, the protective cover is in the shape of a cuboid or a cylinder.

[0011] Preferably, a groove is provided in the middle of the rear end of the protective cover corresponding to the position of the lifting beam.

[0012] Preferably, the screw rod is connected to the housing via a bearing.

[0013] Beneficial effect: When the utility model is used, the loading and unloading doors are opened with the cooperation of the hinges. After opening, the springs that need to be tested are placed in the slots of the loading and unloading doors, the bottom end of the springs are hung on the hooks on the fixed block, and the top end of the springs are hung on the hooks at the bottom of the tension sensor. During the experiment, the loading and unloading doors are closed, the servo motor works, and the servo motor drives the screw rod to rotate. The rotation of the screw rod cooperates with the wire holes on the lifting block, so that the lifting block moves upward on the screw rod. The movement of the lifting block drives the lifting beam, the tension sensor and the hook to move upward, so that the spring can be stretched. The operation is simple and convenient. The protective cover can protect the spring during the stretching test, which is conducive to the experimental use of the spring. The utility model has a novel structure and an ingenious conception, is convenient for conducting stretching tests on the springs, is simple and convenient to operate, and the protective cover can protect the spring during the stretching test, which is conducive to the experimental use of the springs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a side view of the protective cover of the utility model;

[0017] Figure 3 This is a rear view of the protective cover of the utility model;

[0018] Figure 4 It is a schematic diagram of the shell structure of the utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the lifting block of the utility model;

[0020] Numbers in the figure: 1. Base; 2. Fixed block; 3. Tension sensor; 4. Hook; 5. Adjustment mechanism; 6. Protection mechanism; 7. Shell; 8. Screw rod; 9. Guide column; 10. Servo motor; 11. Lifting block; 12. Thread hole; 13. Guide hole; 14. Lifting beam; 15. Protective cover; 16. Hinge; 17. Loading and unloading doors; 18. Groove. Implementation

[0021] The following is combined with Figure 1-5 The specific implementation modes of the present utility model are further described in detail.

[0022] Embodiment 1, by Figure 1-5 The utility model provides a spring testing machine, comprising a base 1 arranged at the bottom, a fixed block 2 arranged at the top of the base 1, a tension sensor 3 installed above the fixed block 2, and a hook 4 installed at the bottom of the tension sensor 3 and the top of the fixed block 2, and also comprising an adjustment mechanism 5 and a protection mechanism 6. The adjustment mechanism 5 is installed at the top of one end of the base 1, and the protection mechanism 6 is installed on one side of the adjustment mechanism 5;

[0023] The adjustment mechanism 5 includes a housing 7, a screw rod 8, a guide column 9, a servo motor 10, a lifting block 11, a wire hole 12, a guide hole 13 and a lifting beam 14. The housing 7 is fixed to one end of the base 1. A screw rod 8 is installed in the middle of the housing 7. Two guide columns 9 are symmetrically fixed on both sides of the screw rod 8. A servo motor 10 is installed at one end of the screw rod 8. A lifting block 11 is installed on the screw rod 8 and the guide column 9. The lifting block 11 has a wire hole 12 at a position corresponding to the screw rod 8. The lifting block 11 has a guide hole 13 at a position corresponding to the guide column 9. A lifting beam 14 is fixed in the middle of one side of the lifting block 11. The tension sensor 3 is installed at the bottom of one end of the lifting beam 14.

[0024] The protection mechanism 6 includes a protection cover 15 , a hinge 16 , a loading and unloading door 17 and a groove 18 . The protection cover 15 is fixed to the outside of the fixed block 2 . The loading and unloading door 17 is installed in the middle of the outside of the protection cover 15 through the hinge 16 .

[0025] The tension sensor 3 is electrically connected to an external data acquisition device to facilitate data transmission.

[0026] The data acquisition device is a computer, which is convenient for processing data.

[0027] The protective cover 15 is in a rectangular parallelepiped or cylindrical shape, which is convenient for use of the protective cover 15 .

[0028] A groove 18 is provided at the middle of the rear end of the protective cover 15 corresponding to the position of the lifting beam 14 .

[0029] The screw rod 8 is connected to the housing 7 via a bearing, which facilitates the installation and use of the screw rod 8 .

[0030] Working principle: When the utility model is used, the loading and unloading door 17 is turned open with the cooperation of the hinge 16. After turning it open, the spring that needs to be tested is placed in the slot of the loading and unloading door 17, and the bottom end of the spring is hung on the hook 4 on the fixed block 2, and the top end of the spring is hung on the hook 4 at the bottom end of the tension sensor 3. During the experiment, the loading and unloading door 17 is closed, and the servo motor 10 is working. The servo motor 10 drives the screw rod 8 to rotate. The rotation of the screw rod 8 cooperates with the wire hole 12 opened on the lifting block 11, so that the lifting block 11 moves upward on the screw rod 8. The movement of the lifting block 11 drives the lifting beam 14, the tension sensor 3 and the hook 4 to move upward, so that the spring can be subjected to a tensile test. The operation is simple and convenient. The protective cover 15 provided can protect the spring during the tensile test, which is conducive to the experimental use of the spring.

[0031] Beneficial effects: The utility model has a novel structure and an ingenious design, is convenient for conducting a tensile test on a spring, and is simple and convenient to operate. The protective cover 15 provided can protect the spring during the tensile test, which is beneficial for the experimental use of the spring.

[0032] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and appropriate controllers and encoders should be selected according to actual conditions to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the order of working in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principles and processes, and no longer explains the electrical control.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A spring testing machine, comprising a base (1) arranged at the bottom, a fixed block (2) arranged at the top of the base (1), a tension sensor (3) installed above the fixed block (2), and a hook (4) installed at the bottom of the tension sensor (3) and the top of the fixed block (2), characterized in that: It also comprises an adjusting mechanism (5) and a protective mechanism (6), wherein the adjusting mechanism (5) is installed on the top of one end of the base (1), and the protective mechanism (6) is installed on one side of the adjusting mechanism (5); The adjusting mechanism (5) comprises a housing (7), a screw rod (8), a guide column (9), a servo motor (10), a lifting block (11), a thread hole (12), a guide hole (13) and a lifting beam (14); the housing (7) is fixed to one end of the base (1); a screw rod (8) is installed in the middle of the housing (7); two guide columns (9) are symmetrically fixed on both sides of the screw rod (8); a servo motor (10) is installed at one end of the screw rod (8); a lifting block (11) is installed on the screw rod (8) and the guide column (9); a thread hole (12) is opened at a position of the lifting block (11) corresponding to the screw rod (8); a guide hole (13) is opened at a position of the lifting block (11) corresponding to the guide column (9); a lifting beam (14) is fixed in the middle of one side of the lifting block (11); and a tension sensor (3) is installed at the bottom of one end of the lifting beam (14); The protection mechanism (6) comprises a protection cover (15), a hinge (16), a loading and unloading door (17) and a groove (18); the protection cover (15) is fixed to the outside of the fixed block (2); and the loading and unloading door (17) is installed in the middle of the outside of the protection cover (15) via the hinge (16).

2. A spring testing machine as claimed in claim 1, characterized in that: The tension sensor (3) is electrically connected to an external data acquisition device.

3. A spring testing machine as claimed in claim 2, characterized in that: The data acquisition device is a computer.

4. A spring testing machine as claimed in claim 1, characterized in that: The protective cover (15) is in the shape of a cuboid or a cylinder.

5. A spring testing machine as claimed in claim 1, characterized in that: A groove (18) is provided at the middle portion of the rear end of the protective cover (15) at a position corresponding to the lifting beam (14).

6. A spring testing machine as claimed in claim 1, characterized in that: The screw rod (8) is connected to the housing (7) via a bearing.

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