Metering calibration equipment for torsion bar spring

Abstract

The utility model discloses a metering calibration device for a torsion bar spring, comprising a pedestal, the top end of which is fixedly provided with a guide rail; the sliding support is slidably connected to the inner side of the guide rail at the top end of the base; the manual adjusting lifting table is fixedly mounted on one side of the sliding bracket; the fixed bracket is fixedly connected to the top end of the base; the switching platform is connected with the bearing mechanism through a coupler; the rotating disc is connected to the outer side of the bearing mechanism in a sleeving manner; and the center of the load disc is fixedly connected with a light flexible wire. Compared with the prior art, the torsion bar spring measuring device has the advantages that the torsion bar spring measuring device is convenient and fast to use, large in measuring range, higher in measuring precision and capable of measuring and calibrating torsion bar springs of different lengths and models.

Description

Technical Field

[0001] The utility model relates to the field of mechanical measurement and calibration, in particular to a device for measuring the torsion and stiffness of torsion bar springs of various cross-section types. Background Art

[0002] Torsion bar springs, as simple, compact elastic components, are used in servo load test systems. To ensure accurate and stable loading torque, torsion bar springs must be regularly calibrated.

[0003] However, the patents under the existing technology have the following disadvantages:

[0004] (1) The existing measurement and calibration equipment for the utility model torsion bar spring has complicated operation steps, a low measurement and calibration range, a high measurement error, and cannot perform measurement and calibration on torsion bar springs of different models. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the above technical defects and provide a torsion bar spring measurement and calibration device which is easy and quick to use, has higher measurement accuracy, and can perform measurement and calibration on torsion bar springs of different lengths and models.

[0006] In order to solve the above problems, the technical solution of the utility model is: a measurement and calibration device for a torsion bar spring, comprising:

[0007] A base, with a guide rail fixedly mounted on the top of the base;

[0008] A sliding bracket, wherein the sliding bracket is slidably connected to the inner side of the guide rail at the top end of the base;

[0009] A manually adjustable lifting platform, the manually adjustable lifting platform is fixedly mounted on one side of the sliding bracket, a transfer block is fixedly mounted on one side of the manually adjustable lifting platform, the transfer block is the same as the clamping fixed torsion bar spring;

[0010] A fixed bracket, the fixed bracket is fixedly connected to the top of the base, and a bearing mechanism is fixedly installed on the top of the fixed bracket;

[0011] A transfer platform, the transfer platform is connected to the bearing mechanism via a coupling, and a digital angle measuring instrument is fixedly mounted on the transfer platform, and the digital angle measuring instrument can be used to read the torsion angle of the torsion bar spring in real time;

[0012] The turntable is sleeved on the outside of the bearing mechanism. The turntable can drive the coupling and the transfer platform to rotate freely through the bearing mechanism. The edge of the turntable is fixedly connected to fixed pins at positions R, R, and R from the center of the turntable;

[0013] A load disk, at the center of which a light flexible wire is fixedly connected. One end of the light flexible wire can be sleeved outside a fixed pin, and weights can be placed on the load disk.

[0014] Further, the bearing mechanism includes:

[0015] A fixed block group, which includes: a first fixed block and a second fixed block. The first fixed block and the second fixed block are fixedly installed at the top of a fixed bracket through fasteners;

[0016] A gland group, which includes: a first gland and a second gland. The first gland is fixedly installed at the top of the first fixed block through fasteners, and the second gland is fixedly installed at the top of the second fixed block through fasteners;

[0017] A bearing group, which includes: a first bearing, a second bearing, a third bearing and a fourth bearing. The outer rings of the first bearing and the second bearing are fixedly connected between the top of the first fixed block and the bottom of the first gland. A first sleeve is fixedly connected between the inner rings of the first bearing and the second bearing. The outer rings of the third bearing and the fourth bearing are fixedly connected between the top of the second fixed block and the bottom of the second gland. A second sleeve is fixedly connected between the inner rings of the third bearing and the fourth bearing;

[0018] A shaft, the two ends of which are fixedly connected to the inner sides of the first bearing, the first sleeve, the second bearing, the third bearing, the second sleeve and the fourth bearing. A keyway is provided on the outer side of the shaft. A first flat key and a second flat key are placed in the keyway of the shaft. A flange is fixedly connected to one side of the first flat key. The turntable is fixedly connected to the flange through fasteners.

[0019] The advantages of the present utility model compared with the existing technology are as follows:

[0020] (1) The metering and calibration device for a torsion bar spring of the present utility model associates the torsional rectangular deformation of the torsion bar spring with the change in the gravity of the load through a turntable, reduces the influence of the torque change generated by the self-rotation of the swing arm in the conventional structure on the measurement of the torsion bar spring, and has higher metering and calibration accuracy. By adjusting the suspension position of the light flexible wire, the measurement range of metering and calibration can be greatly adjusted. Moreover, the present utility model can fix torsion bar springs of different length specifications through components such as a sliding frame and a manually adjustable lifting table for convenient metering and calibration. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a metering and calibration device for a torsion bar spring of the present utility model.

[0022] Figure 2 is a composition diagram of the bearing mechanism of a metering and calibration device for a torsion bar spring of the present utility model.

[0023] Figure 3It is a schematic diagram of the installation of the turntable of a metering and calibration device for a torsion bar spring of the present utility model.

[0024] Figure 4 It is a schematic diagram of the relationship between the torque of the torsion bar and the load change of a metering and calibration device for a torsion bar spring of the present utility model.

[0025] As shown in the figure: 1. Base; 2. Sliding bracket; 3. Manual adjustment lifting table; 4. Adapter block; 5. Torsion bar spring; 6. Adapter platform; 7. Digital display angle measuring instrument; 8. Coupling; 9. Bearing mechanism; 10. Turntable; 11. Fixed bracket; 12. Lightweight soft wire; 13. Load plate; 14. Weights; 15. Fixed block 1; 16. Shaft; 17. Gland 1; 18. Bearing 1; 19. Sleeve 1; 20. Bearing 2; 21. Flange; 22. Key 1; 23. Key 2; 24. Fixed block 2; 25. Bearing 3; 26. Sleeve 2; 27. Bearing 4; 28. Gland 2; 29. Fixed pin. Specific embodiments

[0026] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. On the contrary, they are only examples of devices consistent with some aspects of the present disclosure as detailed in the appended claims.

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1:

[0029] As Figures 1 to 4As shown, a measurement and calibration device for a torsion bar spring includes: a base 1, a sliding bracket 2, a manually adjustable lifting platform 3, a fixed bracket 11, an adapter platform 6, a turntable 10 and a load plate 13. The top of the base 1 is fixedly installed with a guide rail, the sliding bracket 2 is slidably connected to the inner side of the guide rail at the top of the base 1, the manually adjustable lifting platform 3 is fixedly installed on one side of the sliding bracket 2, and an adapter block 4 is fixedly installed on one side of the manual adjustable lifting platform 3. The adapter block 4 is the same as the clamping and fixing torsion bar spring 5. The fixed bracket 11 is fixedly connected to the top of the base 1, and the top of the fixed bracket 11 is fixedly installed with a bearing mechanism 9. The adapter platform 6 is connected to the top of the base 1. It is connected to the bearing mechanism 9 through the coupling 8, and a digital angle measuring instrument 7 is fixedly installed on the adapter platform 6. The digital angle measuring instrument 7 can be used to read the torsion angle of the torsion bar spring 5 in real time. The turntable 10 is sleeved on the outside of the bearing mechanism 9. The turntable 10 can drive the coupling 8 and the adapter platform 6 to rotate freely through the bearing mechanism 9. The edge of the turntable 10 is fixedly connected to the fixed pins 29 at R1, R2 and R3 at the center of the turntable 10. A lightweight soft wire 12 is fixedly connected to the center of the load disk 13. One end of the lightweight soft wire 12 can be sleeved on the outside of the fixed pin 29, and a weight 14 can be placed on the load disk 13.

[0030] The height of the locking adapter block 4 can be adjusted by manually adjusting the lifting platform 3. There is a bolt structure between the sliding bracket 2 and the slide rail. By adjusting the sliding bracket 2, the distance between the locking adapter block 4 and the adapter platform 6 can be adjusted, so that the measurement and calibration equipment can perform measurement and calibration on springs of different lengths.

[0031] The bearing mechanism 9 includes: a fixed block, a group pressure cover, a group bearing and a group shaft 16, the fixed block group includes: a fixed block 15 and a fixed block 24, the fixed block 15 and the fixed block 24 are fixedly mounted on the top of the fixed bracket 11 by fasteners, the pressure cover group includes: a pressure cover 17 and a pressure cover 28, the pressure cover 17 is fixedly mounted on the top of the fixed block 15 by fasteners, and the pressure cover 28 is fixedly mounted on the top of the fixed block 24 by fasteners, the bearing group includes: a bearing 18, a bearing 20, a bearing 3 25 and a bearing 4 27, the outer rings of the bearing 18 and the bearing 20 are fixedly connected to the top of the fixed block 15 and the bottom of the pressure cover 17 A sleeve 19 is fixedly connected between the inner rings of bearing 1 18 and bearing 2 20, the outer rings of bearing 3 25 and bearing 4 27 are fixedly connected between the top of fixed block 24 and the bottom of pressure cover 2 28, and a sleeve 26 is fixedly connected between the inner rings of bearing 3 25 and bearing 4 27. Both ends of shaft 16 are fixedly connected to the inner sides of bearing 1 18, sleeve 19, bearing 2 20, bearing 3 25, sleeve 2 26 and bearing 4 27. A keyway is provided on the outside of shaft 16, and a flat key 1 22 and a flat key 2 23 are placed in the keyway of shaft 16. A flange 21 is fixedly connected to one side of flat key 1 22, and turntable 10 is fixedly connected to flange 21 by fasteners.

[0032] Remove the fasteners between the pressure cover 17 and the fixed block 15 and the fasteners between the pressure cover 28 and the fixed block 24, so that the outer rings of the clamped bearing 18, bearing 20, bearing 3 25 and bearing 4 27 are unlocked, and the shaft 16 together with the bearing 18, bearing 20, bearing 3 25 and bearing 4 27 can be removed. Remove the fasteners between the turntable 10 and the flange 21, and turntables 10 of different sizes can be replaced for measuring and calibrating torsion bar springs 5 of different sizes. The turntable 10 can be quickly replaced through the bearing mechanism 9. The bearing 18, bearing 20, bearing 3 25 and bearing 4 27 of the bearing mechanism 9 can make the turntable 10 rotate more smoothly, reducing the influence of friction resistance on the measurement and calibration of the torsion bar spring 5.

[0033] The two ends of the torsion bar spring 5 are fixedly connected to the adapter block 4 and the adapter platform 6 respectively through fasteners. The weight 14 is passed through the lightweight soft wire 12 and placed on the top of the load disk 13. One end of the lightweight soft wire 12 is sleeved on the fixed pin 29 on the outside of the turntable 10. At this time, the weight 14 drives the turntable 10 to rotate, twisting the torsion bar spring 5. The angle value φ1 at this time is recorded by the digital angle measuring instrument 7.

[0034] Gently place the weight 14, and the turntable 10 rotates under the action of the gravity G of the weight 14. After it stabilizes, record the angle value φ2 of the digital angle measuring instrument 7 at this time.

[0035] Under the action of the gravity of the weight 14, the device drives the turntable 10 to rotate through the lightweight soft wire 12, and at the same time drives the free end of the torsion bar spring 5 to rotate. The deformation of the torsion bar spring 5 itself generates a torque T. When the torque T of the torsion bar spring 5 and the torque generated by the gravity of the weight 14 are equal, the turntable is stable. At this time:

[0036] The torque required for the torsion bar spring to transfer from φ1 to φ2 is: T = G × R = m × g × R;

[0037] The angle change of the torsion bar spring from φ1 to φ2 is: Δφ=φ2-φ1;

[0038] The stiffness of the torsion bar spring is K = T / Δφ = m × g × R / (φ2 - φ1);

[0039] Note: m is the mass of the weight;

[0040] g is the acceleration due to gravity;

[0041] R is the suspension radius of the load mechanism.

[0042] Change the weight of the weight (14) or change the suspension radius of the lightweight soft line 12, record the weight m, suspension radius R, and angle value φ each time, calculate the spring stiffness value K, and compare it with the spring's own stiffness coefficient to determine whether it meets the requirements.

[0043] The digital display angle measuring instrument 7 and the manual adjustment lifting table 3 are both existing products on the market, and their connection methods and control methods are all prior arts, so no further description will be given here.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A metering and calibration device for a torsion bar spring, characterized in that, Comprising: A base (1), on the top of which a guide rail is fixedly installed. A sliding bracket (2), which is slidably connected to the inner side of the guide rail on the top of the base (1). A manually adjustable lifting platform (3), which is fixedly installed on one side of the sliding bracket (2). On one side of the manually adjustable lifting platform (3), a transfer block (4) is fixedly installed, and the transfer block (4) is used for clamping and fixing a torsion bar spring (5). A fixed bracket (11), which is fixedly connected to the top of the base (1). At the top of the fixed bracket (11), a bearing mechanism (9) is fixedly installed. A transfer platform (6), which is connected to the bearing mechanism (9) through a coupling (8). On the transfer platform (6), a digital display angle measuring instrument (7) is fixedly installed, and the digital display angle measuring instrument (7) can be used to read the torsion angle of the torsion bar spring (5) in real time. A turntable (10), which is sleeved outside the bearing mechanism (9). The turntable (10) can drive the coupling (8) and the transfer platform (6) to rotate freely through the bearing mechanism (9). At positions R1, R2, and R3 from the center of the turntable (10) to the edge of the turntable (10), fixed pins (29) are fixedly connected. A load plate (13), at the center of which a light soft wire (12) is fixedly connected. One end of the light soft wire (12) can be sleeved outside the fixed pin (29), and weights (14) can be placed on the load plate (13).

2. The metrological calibration device for a torsion bar spring according to claim 1, characterized in that: The bearing mechanism (9) includes: A fixed block group, which includes: a first fixed block (15) and a second fixed block (24). The first fixed block (15) and the second fixed block (24) are fixedly installed on the top of the fixed bracket (11) through fasteners. A gland group, which includes: a first gland (17) and a second gland (28). The first gland (17) is fixedly installed on the top of the first fixed block (15) through fasteners, and the second gland (28) is fixedly installed on the top of the second fixed block (24) through fasteners. A bearing group, which includes: a first bearing (18), a second bearing (20), a third bearing (25), and a fourth bearing (27). The outer rings of the first bearing (18) and the second bearing (20) are fixedly connected between the top of the first fixed block (15) and the bottom of the first gland (17). A first sleeve (19) is fixedly connected between the inner rings of the first bearing (18) and the second bearing (20). The outer rings of the third bearing (25) and the fourth bearing (27) are fixedly connected between the top of the second fixed block (24) and the bottom of the second gland (28). A second sleeve (26) is fixedly connected between the inner rings of the third bearing (25) and the fourth bearing (27). A shaft (16), both ends of the shaft (16) are fixedly connected to the inner sides of a first bearing (18), a first sleeve (19), a second bearing (20), a third bearing (25), a second sleeve (26) and a fourth bearing (27). A keyway is provided on the outer side of the shaft (16). A first flat key (22) and a second flat key (23) are placed in the keyway of the shaft (16). A flange plate (21) is fixedly connected to one side of the first flat key (22). The turntable (10) is fixedly connected to the flange plate (21) through fasteners.

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