A torsion bar spring torque measuring device and measuring method

Abstract

The present application belongs to the technical field of torsion bar spring torque measurement, and relates to a torsion bar spring torque measurement device and a measurement method. The mechanism comprises a base, a first vertical plate, a second vertical plate, a first top block, a second top block, a cover, an adapter, a first compression screw, a second compression screw, a cylindrical pin and an internal hexagonal cylindrical head screw. First, the second compression screw and the second compression screw are respectively threaded through an M threaded hole of the base and installed with a top block to form a shape, the torsion bar spring is clamped and fixed through the first top block and the second top block, then the first vertical plate and the second vertical plate are installed through an internal hexagonal cylindrical head screw to form a shape, the cover is installed with the first vertical plate and the second vertical plate through an internal hexagonal cylindrical head screw to form a shape, then the torsion bar spring is connected with a torque wrench through the adapter, and the torsion bar spring torque measurement work of the torsion bar spring is completed by checking the scale marked on the cover.

Description

Technical Field

[0001] This invention belongs to the field of torsion bar spring torque measurement technology, and relates to a torsion bar spring torque measuring device and method to realize the torsion bar spring torque detection operation. Background Technology

[0002] The Laboratory of Process Automation and Testing at Harbin Institute of Technology has independently developed the GCY series stiffness measuring platform. This series of stiffness measuring platforms uses high-precision force and displacement sensors and a computer to form a data acquisition system. Based on the actual working conditions of the spring tube, forces are applied at two or more points, and the force is converted into torque through a measuring rod. The displacement of the applied force points is measured and converted into the deflection angle generated at the head of the spring tube. The calculated stiffness value is the spring tube's torque-angular stiffness (or simply angular stiffness). However, this method uses bulky equipment and is not suitable for small torsion bar springs. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of existing technologies and propose a torsion bar spring torque measuring device. By using an adapter to connect and rotate the torsion bar spring to a torque wrench, and employing a cylindrical pin, the torque of the torsion bar spring can be measured.

[0004] The technical solution of the present invention is: a torsion bar spring torque measuring device, the measuring device comprising a base, a hollow column, a first top block, a second top block, a cover, an adapter, a first clamping screw, a second clamping screw, a cylindrical pin, and an internal hexagonal head screw;

[0005] The base is a square plate with a groove in the middle. There is a threaded hole on each side of the groove, and a hexagonal through hole at the bottom of the groove.

[0006] The first and second top blocks are cubes with an angled notch on one side and a groove on the other side. The first and second top blocks are placed in the grooves of the base with the notches facing each other. The first and second clamping screws pass through the threaded holes on both sides of the base and enter the grooves of the first and second top blocks in the base, pushing the first and second top blocks to move towards each other.

[0007] One end of the hollow column is fixed to the frame of the base, and the other end is fixedly connected to the cover;

[0008] The cover is a square cover plate with a through hole in the middle. Around the through hole, there are angle lines radiating outward from the center of the cover. Among them, a scale line perpendicular to the edge of the cover plate is a reference line. The first positioning hole and the second positioning hole are symmetrically arranged on both sides of the reference line. The first positioning hole and the second positioning hole are used to insert the first positioning pin and the second positioning pin, respectively.

[0009] The adapter has a square hole at one end for connecting a torque wrench, and a cylindrical structure with a hexagonal hole at the other end for connecting the torsion bar spring to be tested. The adapter also has a pin hole perpendicular to the axis for inserting a cylindrical pin.

[0010] Preferably, the hollow column is composed of a first upright plate and a second upright plate; the first upright plate and the second upright plate have the same structure, both being long strip structures with an "L" shaped cross section, and the first upright plate and the second upright plate are installed opposite each other on the base plate, splicing together to form a hollow column with a square hole in the cross section.

[0011] Preferably, the first upright plate, the second upright plate and the base, and the first upright plate, the second upright plate and the cover are all fixedly connected by hexagonal cylindrical head screws.

[0012] Preferably, the side panels of the first and second upright plates each form a rectangular notch in the middle position. After the first and second upright plates are spliced ​​together, they form a hollow column with a hollow center, which facilitates observation of the state of the torsion bar spring during the testing process.

[0013] Preferably, the width of the scale lines on the cover and the scale lines on the adapter does not exceed 0.1 cm.

[0014] Preferably, the specified angle is 120 degrees.

[0015] Preferably, the first locating pin and the second locating pin have the same structure as the cylindrical pin.

[0016] Preferably, the square hole end face of the adapter is provided with a scale line aligned with the axis of the side pin hole, for alignment with the reference line on the cover.

[0017] Another technical solution of the present invention is: a method for measuring the torque of a torsion bar spring, the method comprising the following steps:

[0018] S1. Place the torsion bar spring to be tested into the hollow column through the through hole in the middle of the cover, so that one end of the torsion bar spring to be tested is located in the hexagonal through hole of the base, and the other end protrudes from the through hole in the middle of the cover.

[0019] S2. Insert the upper end of the torsion bar spring to be tested into the hexagonal hole of the adapter, and adjust the orientation of the torsion bar spring to be tested so that the scale line on the upper end face of the adapter is aligned with the baseline on the cover.

[0020] S3. Screw in the first clamping screw and the second clamping screw so that the first top block and the second top block clamp the torsion bar spring to be tested under the action of the first clamping screw and the second clamping screw.

[0021] S4. Insert the first positioning pin into the first positioning hole and the second positioning pin into the second positioning hole;

[0022] S5. Insert the cylindrical pin into the pin hole on the side of the adapter;

[0023] S6. The square hole of the adapter is used to connect to the torque wrench. The torque wrench twists the torsion bar spring to be measured until the cylindrical pin touches the first or second locating pin on the cover. Record the angle of the adapter scale line deviating from the cover, which is the rotation angle of the torque wrench. At this time, the torque measured by the torque wrench is the measurement result.

[0024] Preferably, the first locating pin and the second locating pin have the same structure as the cylindrical pin.

[0025] The advantages of this invention compared to the prior art are:

[0026] (1) The present invention uses an adapter to connect and rotate the torsion bar spring and the torque wrench, and uses a cylindrical pin to achieve detection.

[0027] (2) The torsion bar spring proposed in this invention requires torque detection operation with high detection accuracy.

[0028] (3) The hollow column of the present invention is provided with an observation window, which makes it easy to observe the state of the torsion bar spring during the testing process. Attached Figure Description

[0029] Figure 1(a) is an overall view of the measuring device in an embodiment of the present invention when the first clamping screw and the second clamping screw are not installed;

[0030] Figure 1(b) is an overall view of the measuring device when the first clamping screw and the second clamping screw are installed according to an embodiment of the present invention;

[0031] Figure 1(c) is a cross-sectional view AA of Figure 1(a) of the embodiment of the present invention;

[0032] Figure 1(d) is a CC cross-sectional view of Figure 1(b) of the embodiment of the present invention;

[0033] Figure 1(e) is a bottom view of the base plate installation according to an embodiment of the present invention;

[0034] Figure 1(f) is a BB cross-sectional view of Figure 1(e) of the embodiment of the present invention;

[0035] Figure 1(g) is a DD cross-sectional view of Figure 1(b) of the present invention;

[0036] Figure 1(h) is a top view of the cover plate according to an embodiment of the present invention;

[0037] Figure 1(i) is an EE cross-sectional view of Figure 1(h) of the embodiment of the present invention;

[0038] Figure 2(a) is a side view of the base according to an embodiment of the present invention;

[0039] Figure 2(b) is a cross-sectional view of Figure 2(a) of the embodiment of the present invention;

[0040] Figure 2(c) is a top view of the base according to an embodiment of the present invention;

[0041] Figure 2(d) is a cross-sectional view of Figure 2(c) of the embodiment of the present invention;

[0042] Figure 3(a) is a top view of the first or second upright plate according to an embodiment of the present invention;

[0043] Figure 3(b) is a cross-sectional view of Figure 3(a) of the embodiment of the present invention;

[0044] Figure 3(c) is a spliced ​​view of the first and second upright plates in an embodiment of the present invention;

[0045] Figure 3(d) is a side view of the first or second upright plate according to an embodiment of the present invention;

[0046] Figure 3(e) is a BB cross-sectional view of Figure 3(c) of the embodiment of the present invention;

[0047] Figure 3(f) is a top view of the first or second upright plate in an embodiment of the present invention.

[0048] Figure 4(a) is a side view of the first top block and the second top block according to an embodiment of the present invention;

[0049] Figure 4(b) is a side view of the notch in the first top block and the second top block according to an embodiment of the present invention;

[0050] Figure 4(c) is a top view of the first top block and the second top block according to an embodiment of the present invention;

[0051] Figure 4(d) is a cross-sectional view AA of Figure 4(b) of the embodiment of the present invention;

[0052] Figure 5(a) is a side view of the cover plate according to an embodiment of the present invention;

[0053] Figure 5(b) is a top view of the cover plate according to an embodiment of the present invention;

[0054] Figure 5(c) is a BB cross-sectional view of Figure 5(b) of the embodiment of the present invention;

[0055] Figure 5(d) is a cross-sectional view AA of Figure 5(b) of the embodiment of the present invention;

[0056] Figure 6(a) is a top view of the hexagonal hole of the adapter in an embodiment of the present invention;

[0057] Figure 6(b) is a cross-sectional view of the adapter according to an embodiment of the present invention;

[0058] Figure 6(c) is a first side view of the adapter according to an embodiment of the present invention;

[0059] Figure 6(d) is a second side view of the adapter according to an embodiment of the present invention;

[0060] Figure 6(e) is a top view of the square hole of the adapter in an embodiment of the present invention. Detailed Implementation

[0061] The present invention will be further described below with reference to the embodiments.

[0062] Example 1:

[0063] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0064] Figures 1(a) to 1(i) This is a schematic diagram of a torsion bar spring torque testing device. The torsion bar spring torque measuring device includes a base 1, a hollow column, a first top block 3-1, a second top block 3-2, a cover 4, an adapter 5, a first clamping screw 6-1, a second clamping screw 6-2, a cylindrical pin 7, and an internal hexagon socket head cap screw 8.

[0065] like Figures 2(a) to 2(d) As shown, the base 1 is a square plate with a groove in the middle. There is a threaded hole on each side of the groove, and a hexagonal through hole at the bottom of the groove.

[0066] like Figures 4(a) to 4(d) As shown, the first top block 3-1 and the second top block 3-2 are cubes with a notch at a certain angle on one side and a groove on the other side. The first top block 3-1 and the second top block 3-2 are placed in the groove of the base with the notches facing each other. The first clamping screw 6-1 and the second clamping screw 6-2 pass through the threaded holes on both sides of the base 1 and enter the groove of the first top block 3-1 and the second top block 3-2 in the base 1, pushing the first top block 3-1 and the second top block 3-2 to move towards each other.

[0067] One end of the hollow column is fixed to the frame of the base 1, and the other end is fixedly connected to the cover 4.

[0068] like Figures 5(a) to 5(d) As shown, cover 4 is a square cover plate with a through hole in the middle. The perimeter of the through hole has angle lines radiating outward from the center of cover 4. Among them, a scale line perpendicular to the edge of the cover plate is a reference line. The first positioning hole and the second positioning hole are symmetrically arranged on both sides perpendicular to the reference line. The first positioning hole and the second positioning hole are used to insert the first positioning pin and the second positioning pin, respectively.

[0069] like Figures 6(a) to 6(e) As shown, adapter 5 has a square hole at one end for connecting a torque wrench, and a cylindrical structure with a hexagonal hole at the other end for connecting the torsion bar spring to be tested. The side of adapter 5 is also provided with a pin hole perpendicular to the axis direction for inserting a cylindrical pin 7. The end face of the square hole is provided with a scale line aligned with the axis of the side pin hole for alignment with the reference line on the cover.

[0070] like Figures 3(a) to 3(f) Preferably, the hollow column is composed of a first upright plate 2-1 and a second upright plate 2-2; the first upright plate 2-1 and the second upright plate 2-2 have the same structure, both being long strips with an "L"-shaped cross-section. The first upright plate 2-1 and the second upright plate 2-2 are mounted opposite each other on the base plate, splicing together to form a hollow column with a square hole in the cross-section. The first upright plate 2-1 and the second upright plate 2-2 are spliced ​​together by screws.

[0071] Preferably, the first upright plate 2-1, the second upright plate 2-2 and the base, and the first upright plate 2-1, the second upright plate 2-2 and the cover 4 are all fixedly connected by hexagonal cylindrical head screws 8.

[0072] Preferably, a rectangular notch is formed in the middle of each side wall panel of the first upright plate 2-1 and the second upright plate 2-2. After the first upright plate 2-1 and the second upright plate 2-2 are spliced ​​together, a hollow column with a hollow center is formed, which makes it easy to observe the state of the torsion bar spring during the testing process.

[0073] Preferably, the width of the scale lines on the cover 4 and the scale lines on the adapter 5 does not exceed 0.1 cm.

[0074] Preferably, the specified angle is 120 degrees.

[0075] Based on the above-described device, the present invention also provides a method for measuring the torque of a torsion bar spring, the method comprising the following steps:

[0076] S1. Place the torsion bar spring to be tested into the hollow column through the middle through hole of the cover 4, so that one end of the torsion bar spring to be tested is located in the hexagonal through hole of the base, and the other end protrudes from the middle through hole of the cover 4.

[0077] S2. Insert the upper end of the torsion bar spring to be tested into the hexagonal hole of the adapter 5, and adjust the orientation of the torsion bar spring to be tested so that the scale line on the upper end face of the adapter 5 is aligned with the reference line on the cover 4.

[0078] S3. Screw in the first clamping screw 6-1 and the second clamping screw 6-2, so that the first top block 3-1 and the second top block 3-2 clamp the torsion bar spring to be tested under the action of the first clamping screw 6-1 and the second clamping screw 6-2.

[0079] S4. Insert the first positioning pin into the first positioning hole and the second positioning pin into the second positioning hole;

[0080] S5. Insert the cylindrical pin 7 into the pin hole on the side of the adapter 5;

[0081] S6. The square hole of the adapter 5 is used to connect to the torque wrench. The torque wrench twists the torsion bar spring to be tested until the cylindrical pin 7 touches the first or second locating pin on the cover 4. Record the angle of the scale line of the adapter 5 off from the cover 4, which is the rotation angle of the torque wrench. At this time, the torque measured by the torque wrench is the torque corresponding to the rotation angle of the torque wrench. The torque measurement of the torsion bar spring is completed by checking the scale marked on the cover 4.

[0082] Example:

[0083] In one specific embodiment of the present invention, the base 1 is a cube of 60mm x 60mm x 15mm, wherein: 2 holes of size M6-7H are used for connection with the first clamping screw 6-1 and the second clamping screw 6-2, and the bottom... The hexagonal hole is used to fix the bottom of the torsion bar spring, and the four Φ4.5 size screws are used to fix the first vertical plate 2-1 and the second vertical plate 2-2.

[0084] The 6XM4-7H size is used to fix the base 1 with the internal hexagonal head screw 8, and to fix the first upright plate 2-1 and the second upright plate 2-2 to each other; the 250mmX20mm size is an observation slot, used to observe the state of the torsion bar spring during the testing process.

[0085] The first top block 3-1 and the second top block 3-2 are 10mm x 10mm x 12mm cubes, wherein: the 120° dimension is used for clamping and limiting the torsion bar spring; M6-7H, The dimensions are for clamping the torsion bar spring when equipped with the clamping screw 6.

[0086] The cover 4 is a cube measuring 60mm x 60mm x 10mm. The 4x4.5mm dimension is used to fix it to the two upright plates 2 using hexagon head screws 8. The Φ20.5mm dimension is used to insert the adapter 5 to connect with the torsion bar spring for measuring the torsion bar spring torque. The 2xΦ2H7mm dimension is used to insert the cylindrical pin 7 to limit the rotation angle of the torque wrench. The 0.1mm engraved line on the upper surface is used to observe the rotation angle of the torque wrench.

[0087] Adapter 5 is a cylinder with a diameter of Φ20 x 20 mm, wherein: The dimensions are for connection with torsion bar springs; Used for connection with a torque wrench; the Φ2H7 dimension is used to insert the cylindrical pin 7 and the two positioning pins inserted on the cover 4 to limit the rotation angle of the torque wrench; the 0.1mm engraving on the upper surface is used to observe the rotation angle of the torque wrench.

[0088] The first clamping screw 6-1 and the second clamping screw 6-2 are standard parts used to connect with the top block 3. The torsion bar spring is clamped and assembled by rotating the first clamping screw 6-1 and the second clamping screw 6-2.

[0089] Cylindrical pin 7 is a standard part, used on adapter 5 with a Φ2H7 dimension to limit the rotation angle of the torque wrench. The first and second locating pins on the cover plate can also be cylindrical pin 7.

[0090] The internal hex socket head cap screw 8 is a standard part, used to assemble the base 1, the first upright plate 2-1, the second upright plate 2-2, and the cover 4.

[0091] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A torsion bar spring torque measuring device, characterized in that... Includes a base (1), a hollow column, a first top block (3-1), a second top block (3-2), a cover (4), an adapter (5), a first clamping screw (6-1), a second clamping screw (6-2), a cylindrical pin (7), and an internal hexagonal head screw (8); The base (1) is a square plate with a groove in the middle, and a threaded hole is provided on each side opposite to the groove. A hexagonal through hole is provided at the bottom of the groove. The first top block (3-1) and the second top block (3-2) are cubes with a notch at a certain angle on one side and a groove on the other side. The first top block (3-1) and the second top block (3-2) are placed in the groove of the base with the notches facing each other. The first clamping screw (6-1) and the second clamping screw (6-2) pass through the threaded holes on both sides of the base (1) and enter the groove of the first top block (3-1) and the second top block (3-2) in the base (1) respectively, pushing the first top block (3-1) and the second top block (3-2) to move towards each other. One end of the hollow column is fixed to the frame of the base (1), and the other end is fixedly connected to the cover (4); The cover (4) is a square cover plate with a through hole in the middle. The through hole has angle lines radiating outward from the center of the cover (4). Among them, a scale line perpendicular to the edge of the cover plate is the reference line. The first positioning hole and the second positioning hole are symmetrically arranged on both sides perpendicular to the reference line. The first positioning hole and the second positioning hole are used to insert the first positioning pin and the second positioning pin respectively. The adapter (5) has a square hole at one end for connecting a torque wrench, and a cylindrical structure with a hexagonal hole at the other end for connecting the torsion bar spring to be tested. The adapter (5) also has a pin hole perpendicular to the axis direction on the side for inserting a cylindrical pin (7).

2. The torsion bar spring torque measuring device according to claim 1, characterized in that... The hollow column is composed of a first upright plate (2-1) and a second upright plate (2-2). The first upright plate (2-1) and the second upright plate (2-2) have the same structure, both being "L"-shaped long strip structures. The first upright plate (2-1) and the second upright plate (2-2) are installed opposite each other on the base plate and spliced ​​together to form a hollow column with a square hole in the cross section.

3. The torsion bar spring torque measuring device according to claim 2, characterized in that... The first upright plate (2-1), the second upright plate (2-2) and the base are fixedly connected, and the first upright plate (2-1), the second upright plate (2-2) and the cover (4) are fixedly connected by hexagonal cylindrical head screws (8).

4. The torsion bar spring torque measuring device according to claim 2, characterized in that... The first upright plate (2-1) and the second upright plate (2-2) each have a rectangular notch formed in the middle of their side panels. After the first upright plate (2-1) and the second upright plate (2-2) are spliced ​​together, they form a hollow column with a hollow center, which makes it easy to observe the state of the torsion bar spring during the testing process.

5. The torsion bar spring torque measuring device according to claim 1, characterized in that... The width of the scale lines on the cover (4) and the scale lines on the adapter (5) shall not exceed 0.1cm.

6. The torsion bar spring torque measuring device according to claim 1, characterized in that... The specified angle is 120 degrees.

7. The torsion bar spring torque measuring device according to claim 1, characterized in that... The first locating pin, the second locating pin and the cylindrical pin (7) have the same structure.

8. The torsion bar spring torque measuring device according to claim 1, characterized in that... The square hole end face of the adapter has a scale line aligned with the axis of the side pin hole, which is used to align with the reference line on the cover (4).

9. A method for measuring the torque of a torsion bar spring based on the device described in claim 1, characterized in that... Includes the following steps: S1. Place the torsion bar spring to be tested into the hollow column through the middle through hole of the cover (4), so that one end of the torsion bar spring to be tested is located in the hexagonal through hole of the base, and the other end extends out from the middle through hole of the cover (4). S2. Insert the upper end of the torsion bar spring to be tested into the hexagonal hole of the adapter (5), and adjust the orientation of the torsion bar spring to be tested so that the scale line on the upper end face of the adapter (5) is aligned with the baseline on the cover (4). S3. Screw in the first clamping screw (6-1) and the second clamping screw (6-2) so that the first top block (3-1) and the second top block (3-2) clamp the torsion bar spring to be tested under the action of the first clamping screw (6-1) and the second clamping screw (6-2); S4. Insert the first positioning pin into the first positioning hole and the second positioning pin into the second positioning hole; S5. Insert the cylindrical pin (7) into the pin hole on the side of the adapter (5); S6. The square hole of the adapter (5) is used to connect with the torque wrench. The torque wrench twists the torsion bar spring to be measured until the cylindrical pin (7) touches the first or second locating pin on the cover (4). The angle at which the scale line of the adapter (5) deviates from the cover (4) is the rotation angle of the torque wrench. At this time, the torque measured by the torque wrench is the measurement result.

10. A method for measuring the torque of a torsion bar spring according to claim 9, characterized in that... The first locating pin, the second locating pin and the cylindrical pin (7) have the same structure.

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