CN210893641U

CN210893641U - Torque testing device of combined spring

Info

Publication number: CN210893641U
Application number: CN201921784327.7U
Authority: CN
Inventors: 贺欣兴; 秦楚山; 吴红军; 李志栋; 孟辉; 杨连群; 张周辉; 张健
Original assignee: AVIC Landing Gear Advanced Manufacturing Corp
Current assignee: AVIC Landing Gear Advanced Manufacturing Corp
Priority date: 2019-10-23
Filing date: 2019-10-23
Publication date: 2020-06-30
Anticipated expiration: 2029-10-23

Abstract

A torque testing device of a combined spring comprises a clamp body and a transmission mandrel, wherein the transmission mandrel sequentially penetrates through a dial, a movable disc and a fixed disc, and two ends of the transmission mandrel are installed on the clamp body; the dial is fixedly connected with the movable disc, the movable disc is connected with the transmission mandrel in a key connection mode, the fixed disc is installed on the clamp body, and a pointer corresponding to the dial is further arranged on the clamp body; and the movable disc and the fixed disc are both provided with clamping grooves for fixing the combined spring. The utility model discloses utilize the combination of driving disk and fixed disk to apply the moment of torsion for combination spring, accurate test combination spring moment of torsion under different torsion angle.

Description

Torque testing device of combined spring

Technical Field

The utility model belongs to the technical field of the frock, concretely relates to composite spring's torque testing device.

Background

The combined spring is a combination of a large spring and a small spring, and the large spring is sleeved outside the small spring in a working state, and spiral line axes of the two springs are overlapped. The combined spring is used for providing larger torque for the driver, and as shown in fig. 1, the combined spring is a typical workpiece structure of the combined spring of the driver, the spring belongs to a torsion spring, the cross section of the spring is rectangular, the spring is mainly subjected to torque, the material is spring steel, and the heat treatment is quenching and tempering. For a conventional torsion spring, a torque test is performed on a single spring in normal operation, and it is rare that the technical requirement of some drivers is to determine the torque of a combined spring at a specific torsion angle.

To fulfill the test requirements, the following problems need to be solved:

1) how to fix the combination spring;

2) how to apply torque to the combination spring;

3) how to obtain the torque corresponding to the torsion angle of the combination spring.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the problem is solved, a testing device capable of testing the torque of the combined spring under different torsion angles is provided.

The utility model adopts the technical proposal that: a torque testing device of a combined spring comprises a clamp body and a transmission mandrel, wherein the transmission mandrel sequentially penetrates through a dial, a movable disc and a fixed disc, and two ends of the transmission mandrel are installed on the clamp body; the dial is fixedly connected with the movable disc, the movable disc is connected with the transmission mandrel in a key connection mode, the fixed disc is installed on the clamp body, and a pointer corresponding to the dial is further arranged on the clamp body; and the movable disc and the fixed disc are both provided with clamping grooves for fixing the combined spring.

Among the above-mentioned scheme, the price fixing is fixed on the anchor clamps body, and the driving disk rotates along with the rotation of transmission dabber, and the draw-in groove of driving disk is gone into to the one end card of combination spring, and during the draw-in groove of price fixing is gone into to the other end card, applys the moment of torsion to the transmission dabber during the test, and the moment of torsion transmits combination spring along with the driving disk, and dial follower rotates simultaneously to can instruct the angle of calibrated scale according to the pointer, test combination spring is the moment of torsion under different torsion angle.

Preferably, the fixture body is provided with a U-shaped groove, and the bottom of the fixed disc is provided with a boss corresponding to the U-shaped groove; and a steel bushing and a nut for fixing the steel bushing are arranged on the transmission mandrel and close to the outer side of the fixed plate.

Preferably, a through hole for the transmission mandrel to pass through is formed in the center of the fixed plate, and a copper bush is arranged in the through hole; the end face of the steel bushing is tightly attached to the end face of the copper bushing.

Preferably, a first key groove is formed in the transmission mandrel, a flat key is installed at the first groove, and a second key groove corresponding to the flat key is formed in the movable disc; and a convex shoulder is arranged on the outer side of the transmission mandrel close to the movable disc.

Preferably, both ends of the fixture body are provided with semicircular grooves, pressing blocks are arranged above the semicircular grooves, and the pressing blocks are connected with the fixture body through bolts; two ends of the transmission mandrel are respectively positioned in the semicircular grooves at two ends of the fixture body and are tightly pressed through the pressing block.

Preferably, a torque wrench interface is arranged at the end part, close to the movable disc, of the transmission mandrel.

Preferably, the torque wrench interface is detachably connected with the adapter.

Preferably, the terminal surface of movable disk is equipped with the screw hole, and the calibrated scale passes through screw and movable disk threaded connection.

The utility model has the advantages that: the torque of the combined spring under a torsion angle of 360 degrees can be tested; the tool is convenient to clamp and can be clamped and fixed only by virtue of the vice; the operation is convenient, the cost is low, and the efficiency and the quality are very high; the torque wrench with different interfaces can be switched through the adapter; the torsion spring is suitable for similar combined torsion springs and is also suitable for a single torsion spring.

Drawings

FIG. 1 is a schematic view of the installation of the combination spring of the present invention;

FIG. 2 is a schematic view of the installation of the present invention;

FIG. 3 is a schematic view of the installation of the combined spring, the movable plate and the fixed plate of the present invention;

fig. 4 is a schematic view of the clamp body of the present invention;

fig. 5 is a schematic view of a drive spindle of the present invention;

FIG. 6 is a schematic view of the movable plate of the present invention;

fig. 7 is a schematic view of the fixed plate of the present invention;

fig. 8 is a schematic view of the adapter of the present invention.

Detailed Description

As shown in fig. 1 to 8, a torque testing device of a combined spring comprises a clamp body 15 for fixing the testing device on a vice; the transmission mandrel 3 is used for transmitting torque; a movable plate 10 for fixing the large spring 9 and the small spring 11 and transmitting torque; a fixed plate 8 for fixing a large spring 9 and a small spring 11; a scale disk 6 for displaying an angle, wherein the scale disk 6 is fixed on the movable disk 10; a pointer 14 fixed to the holder body 15 for indicating the angle of the scale 6.

In this embodiment, the transmission mandrel 3 is provided with a first key groove 31, the first groove is provided with a flat key 7, and the movable disk 10 is provided with a second key groove 101 corresponding to the flat key 7.

In the arrangement described above, the drive spindle 3 is keyed to the moving disk 10 by means of a flat key 7, so as to transmit torque.

Furthermore, a shoulder 32 is provided on the drive spindle 3 at a location lying against the outside of the cam disk 10, so that the cam disk 10 is prevented from moving outward.

Specifically, a U-shaped groove is formed in the clamp body 15, a boss 81 is arranged at the bottom of the fixed disc 8, and when the boss is clamped into the U-shaped groove of the clamp body 15, the fixed disc 8 can be limited; one end of the transmission mandrel 3 is sequentially provided with a steel bushing 12 and a nut 13 for fixing the steel bushing 12; the center of the fixed plate is provided with a through hole for the transmission mandrel 3 to pass through, and a copper bush 16 is arranged at the through hole and used for protecting the inner hole and the end surface of the fixed plate.

Through the arrangement, when the nut 13 is screwed down, the end face of the steel bushing 12 is tightly attached to the end face of the copper bushing 16 arranged in the hole of the fixed plate 8, so that the left and right movement of the fixed plate 8 and the rotation around the axis of the transmission mandrel 3 are limited;

furthermore, the end part of the transmission mandrel 3 close to the movable disc 10 is provided with a torque wrench interface 33, so that a digital display torque wrench is used for applying force during operation.

In addition, the torque wrench interface 33 is also connected with a conversion joint 4 for switching digital display torque wrenches with different interfaces; when the interface of the torque wrench is consistent with the interface of the torque wrench of the transmission mandrel 3, the adapter 4 may not be installed.

In this embodiment, both ends of the clamp body 15 are provided with the semicircular grooves 151, the pressing blocks 2 are arranged above the semicircular grooves 151, the pressing blocks 2 are fixed on the clamp body 15 through bolts 1, and the transmission mandrel 3 is placed in the semicircular grooves at both ends of the clamp body 15 and is pressed through the pressing blocks 2.

Wherein, the draw-in groove of driving disk 10 and fixed disk 8 designs according to big spring 9 and little spring 11's overall structure, guarantees that big spring 9 and little spring 11 can block in the draw-in groove and do not rotate, and driving disk 10 terminal surface has a screw hole, and calibrated scale 6 is fixed at the screw 5 of driving disk 10 terminal surface through twisting, and pointer 14 is fixed on the anchor clamps body 15.

During operation, a digital display torque wrench is used for applying force, the transmission mandrel 3, the dial 6 and the movable disk 10 rotate together, torque acts on the transmission mandrel 3 through the interface or the adapter 4 of the transmission mandrel 3, then is transmitted to the movable disk 10 through the flat key 7, and finally is transmitted to the combined spring clamped in the clamping groove of the movable disk 10, the torsion angle is the degree of the dial 6 indicated by the pointer 14, and the torque value is the reading of the digital display torque wrench.

The utility model discloses an installation does: fixing the clamp body 15 on the vice; then the dial 6 and the movable disc 10 sequentially penetrate through the transmission mandrel 3, and the flat key 7 is placed in the key grooves of the movable disc 10 and the transmission mandrel 3; then, mounting a combined spring, and aligning the end surfaces of the large spring 9 and the small spring 11 with the clamping groove of the movable disc 10; then, the fixed disc 8 penetrates into the transmission mandrel 3, the angle is adjusted, and the boss of the fixed disc 8 is clamped into the U-shaped groove of the clamp body 15; then the copper bush 16 is inserted into the transmission mandrel 3 and pressed into the hole of the fixed disc 8; then aligning the large spring 9 and the small spring 11 with the cavity of the fixed plate 8; then, the steel bushing 12 penetrates into the transmission mandrel 3, the nut 13 is screwed on the thread of the transmission mandrel 3, the movable disc 10 is ensured to be tightly attached to the shoulder of the transmission mandrel 3, the steel bushing 12 is tightly attached to the end face of the copper bushing 16, and the other end face of the steel bushing 12 is tightly attached to the end face of the nut 13; then the transmission mandrel 3 is placed in the semicircular groove 151 of the clamp body 15; then, installing a pressing block 2, installing a pointer 14 on the end face of the pressing block 2, and screwing four bolts 1; the angle of the scale 6 is then adjusted so that the pointer 14 points to 0 ° of the scale 6.

After the installation is finished, the connector of the digital display torque wrench is aligned to the torque wrench interface of the transmission mandrel 3, and if the interface of the digital display torque wrench is inconsistent with the torque wrench interface of the transmission mandrel 3, the adapter 4 is used for switching. After the stress is applied, the angle pointed by the pointer 14 is observed, when the torsion angle reaches the angle required to be tested, the reading of the digital display torque wrench is read, the angle and the torque value are recorded, and the test is finished.

Claims

1. The torque testing device of the combined spring is characterized by comprising a clamp body (15) and a transmission mandrel (3), wherein the transmission mandrel (3) sequentially penetrates through a dial (6), a movable disc (10) and a fixed disc (8), and two ends of the transmission mandrel (3) are installed on the clamp body (15); the dial (6) is fixedly connected with the movable disc (10), the movable disc (10) is in key connection with the transmission mandrel (3), the lower part of the fixed disc (8) is fixedly arranged on the clamp body (15), and the clamp body (15) is also provided with a pointer (14) corresponding to the dial (6); and the movable disc (10) and the fixed disc (8) are both provided with clamping grooves for fixing the combined spring.

2. The torsion testing device of the combined spring is characterized in that a U-shaped groove is formed in the fixture body (15), and a boss (81) corresponding to the U-shaped groove is formed at the bottom of the fixed disc (8); and a steel bushing (12) and a nut (13) for fixing the steel bushing (12) are arranged at the position, close to the outer side of the fixed disc (8), on the transmission mandrel (3).

3. The torsion testing device of the combined spring is characterized in that a through hole for the transmission mandrel (3) to pass through is formed in the center of the fixed plate (8), and a copper bush (16) is arranged in the through hole; the end surface of the steel bushing (12) is tightly attached to the end surface of the copper bushing (16).

4. The torsion testing device of the combined spring is characterized in that a first key groove (31) is formed in the transmission mandrel (3), a flat key (7) is installed in the first groove, and a second key groove (101) corresponding to the flat key (7) is formed in the movable plate (10); and a convex shoulder (32) is arranged at the position, close to the outer side of the movable disc (10), on the transmission mandrel (3).

5. The torsion testing device of the combined spring is characterized in that both ends of the clamp body (15) are provided with semicircular grooves (151), a pressing block (2) is arranged above the semicircular grooves, and the pressing block (2) is connected with the clamp body (15) through a bolt (1); two ends of the transmission mandrel (3) are respectively positioned in the semicircular grooves (151) at two ends of the clamp body (15) and are tightly pressed through the pressing block (2).

6. A torque testing device of a combined spring according to any one of claims 1 to 5, characterized in that a torque wrench interface (33) is arranged at the end of the transmission mandrel (3) close to the movable disc.

7. A torsion testing device of a combination spring according to claim 6, wherein the torque wrench interface is detachably connected with an adapter (4).

8. The torsion testing device of the combined spring is characterized in that the movable plate (10) is provided with a threaded hole, and the dial (6) is in threaded connection with the movable plate (10) through a screw (5).