CN116296466A - A torque testing device - Google Patents

Abstract

The invention discloses a torque testing device, which includes a conveying line on which a product to be tested is placed for conveying; and a double-sided clamping assembly, which is used to hold the conveying line The product is clamped and fixed, which includes a symmetrical first clamping mechanism and a second clamping mechanism respectively arranged on the left and right sides of the conveying line; it also includes a torque test assembly, which is used to detect the product Torque, which includes a torque detection mechanism, a torque transmission mechanism, and a cantilever that is inserted into the product and rotates synchronously with the output end of the product, and the cantilever is connected to the torque detection mechanism through the torque transmission mechanism; the torque testing device designed in this scheme , can automatically complete the product conveying, clamping positioning and torque detection, the whole process is automatic operation, with a high degree of automation, which can effectively improve the overall detection efficiency of the product.

Description

A torque testing device

technical field

The invention relates to the technical field of automation equipment, in particular to a torque testing device.

Background technique

The electric drive products of new energy vehicles need to detect the torque of the electric drive products during the production process. During the detection, the test device needs to be inserted into the output end of the electric drive. During the test, there are two states, namely static torque Testing and torque testing at different speed transients; during the entire testing process, there are high requirements for product transportation, clamping and testing, because electric drive products generally have a large volume and weight, and testing devices require Through the docking of the auxiliary equipment with the output end of the electric drive product, during the detection process, the electric drive product will generate a large force when it is energized and rotated, and the product needs to be fixed. Therefore, the traditional detection method is time-consuming and laborious.

It should be noted that the above introduction of the technical background is only for the convenience of a clear and complete description of the technical solution of the present invention, and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are known to those skilled in the art just because these solutions are described in the background of the present invention.

Contents of the invention

In order to overcome the above disadvantages, the purpose of the present invention is to provide a torque testing device, thereby effectively solving the above technical problems.

In order to achieve the above object, the technical solution adopted in the present invention is: a torque testing device, including a device body, and the device body includes:

Conveyor line, the products to be tested are placed on the pallets of the conveying line for conveying;

The double-sided clamping assembly is used for clamping and fixing the products of the conveying line, which includes a symmetrical first clamping mechanism and a second clamping mechanism respectively arranged on the left and right sides of the conveying line. clamping mechanism;

Torque test assembly, the torque test assembly is used to detect the torque of the product, which includes a torque detection mechanism, a torque transmission mechanism, and a cantilever inserted into the product to rotate synchronously with the output end of the product, and the cantilever passes through the torque transmission mechanism and The torque detection mechanism is connected.

The beneficial effects of the present invention are: the torque test device designed in this scheme can automatically complete product delivery, clamping positioning and torque detection, and the whole process is automatically operated with a high degree of automation, which can effectively improve the overall detection efficiency and detection accuracy of the product.

The principle of use is: the product is placed on the pallet and transported to the double-sided clamping assembly through the conveyor line. The product is located between the first clamping mechanism and the second clamping mechanism, and the first clamping mechanism and the second clamping mechanism cooperate. The product is clamped and positioned; then the cantilever in the torque test assembly is stretched out and inserted into the output end inside the product. When the product is powered on and starts to work, the cantilever rotates synchronously, and the torque generated by the rotation is transmitted to the torque through the torque transmission mechanism. The detection mechanism performs torque detection.

Further, a jacking mechanism is provided on the conveying line, and the jacking mechanism is located in the middle of the first clamping mechanism and the second clamping mechanism, which includes a base plate, a jacking plate and a jacking cylinder, wherein:

The jacking cylinder is arranged on the base plate, the working end of the jacking cylinder is connected to the lifting plate, a guide shaft is also arranged on the base plate, and the lifting plate is movably arranged on the guide plate. on the shaft;

When the pallet moves to the designated position on the conveying line with the product, the stopping cylinder under the conveying line stretches out to block the pallet, so that the pallet does not move forward, and then the jacking cylinder drives the lifting plate to lift the pallet with the product Lift off the conveyor line.

The jacking cylinder includes the first jacking cylinder and the second jacking cylinder; the strokes of the first jacking cylinder and the second jacking cylinder are different, and the functions are also different, as follows:

When the first jacking cylinder and the second jacking cylinder work at the same time, the pallet and its products are lifted from the conveying line to the highest point, and then the clamping mechanism will clamp and fix the products on the pallet;

After the product is clamped, the pallet is driven down by the second jacking cylinder to separate from the product, and the supporting and fixing effect of the pallet on the product is removed to prevent the product from being affected for measurement; here, if the second jacking cylinder is not set, only the second jacking cylinder is used One jacking cylinder will directly lower the pallet to the conveyor line. Although there will be a stop cylinder on the conveyor line to block the pallet, it will also cause wear and tear on the pallet and the conveyor line, so the pallet needs to be lowered to the middle through the second jacking cylinder After the product is inspected, the pallet is raised to the highest point by the second jacking cylinder to catch the product, and finally the first jacking cylinder and the second jacking cylinder work simultaneously to drive the pallet and the product down to the conveyor line Continue to move forward.

Further, the first clamping mechanism and the second clamping mechanism have the same structure, including a push plate, a mounting block, and several oil cylinder telescoping heads;

The push plate can be set in translation, the installation block is fixedly arranged on the push plate, the telescoping head of the oil cylinder is arranged on the mounting block, and the telescoping head of the oil cylinder withstands the product during clamping.

When the first clamping mechanism and the second clamping mechanism clamp the product, the two push plates move closer to the center, and after the push plate moves to the corresponding position with the telescopic head of the oil cylinder, the telescopic head of the oil cylinder stretches out to withstand the product After finishing the clamping.

There are several oil cylinder telescopic heads on the first clamping mechanism and the second clamping mechanism, and the first clamping mechanism is also provided with a product positioning head; multiple oil cylinder telescopic heads simultaneously withstand the product, thereby improving clamping. To ensure the stability of the product, before the telescopic head of the oil cylinder stretches out to withstand the product, the product is positioned by the product positioning head, and then the product is clamped and fixed after positioning.

Further, the double-sided clamping assembly also includes a base, and the base is provided with a first linear track, a first electric drive cylinder, a second linear track, and a second electric drive cylinder, wherein:

The push plate in the first clamping mechanism can be disposed on the first linear track in a translational manner, and the working end of the first electric drive cylinder is connected with the push plate;

The push plate in the second clamping mechanism is disposed on the second linear track in a translational manner, and the working end of the second electric drive cylinder is connected with the push plate.

Drive the push plate to translate on the linear track by driving the electric cylinder; at the same time, there are lock blocks on the first linear track and the second linear track; when the push plate moves to the specified position, it needs to keep still. Therefore, the push plate is locked on the linear track by the lock block, which prevents the position shift of the push plate due to the reaction force when the telescopic head of the oil cylinder extends out of the product, effectively ensuring the rigidity and stability of the clamping base.

Further, a clamping tension rod is provided between the first clamping mechanism and the second clamping mechanism, and one end of the clamping tension rod is fixed on the top of the first clamping mechanism. On the push plate, the other end of the clamping tension rod is fixed on the push plate in the second clamping mechanism.

When the telescopic head of the oil cylinder stretches out to lift the product, the push plate will move on the linear track due to the reaction force. In order to avoid this situation, a clamping and tensioning rod is installed between the two push plates. When the push plate moves , the clamping tension rod is not engaged with the clamping cylinder; the clamping cylinder remains open when ventilating; when it is moved in place, the clamping cylinder is cut off, and the clamping cylinder and the tie rod are in mechanical engagement (dead state), thereby limiting the push plate displacement.

Further, the torque transmission mechanism includes a first rotating shaft, a second rotating shaft, a diaphragm coupling, a bearing seat and a buffer assembly, wherein:

The tail end of the cantilever is inserted into the first rotating shaft and connected to the first rotating shaft through a rectangular spline. The connection method of the rectangular spline can make the tail end of the cantilever freely expand and contract in the axial direction after being inserted into the first rotating shaft. At the same time, the cantilever can rotate synchronously with the first rotating shaft when rotating; the first rotating shaft is connected with the second rotating shaft through the diaphragm coupling, and the second rotating shaft is arranged on the bearing seat and connected to the The torque detection mechanism is connected; the shaft center of the second rotating shaft is provided with a groove, the buffer assembly is movably arranged in the groove, and the tail end of the cantilever passes through the first rotating shaft The inside is then abutted against the buffer component.

The torque transmission mechanism uses a diaphragm coupling to connect the two rotating shafts, and the diaphragm coupling cannot bear a large radial impact force. However, when the cantilever is inserted into the driving end of the drive motor, a large impact force will be generated. When the cantilever stretches, the force will act on the diaphragm coupling, which will cause damage to the diaphragm coupling; therefore, by setting the buffer component at the end of the cantilever, when the cantilever is inserted into the product under test, the impact generated by the expansion and contraction of the cantilever The force will be transmitted to the buffer assembly, thus effectively avoiding damage to the diaphragm coupling due to axial pressure.

Further, the buffer assembly includes a buffer rod and a spring, the spring is sleeved on the buffer rod, the buffer rod is inserted into the groove, and the front end of the buffer rod and the tail end of the cantilever Fixed connection; there is a stop block between the buffer rod and the outer rotating shaft to ensure that during the test, when the outer rotating shaft rotates, the buffer rod and the rotating shaft rotate synchronously to avoid additional Inertial Disturbance.

When the cantilever is inserted into the product under test, the force on the cantilever will shrink back, thereby driving the buffer rod to translate backward. The spring will be compressed while the buffer rod moves backward. When the cantilever is pulled out from the product under test, The rebound force of the spring will return the bumper bar with the cantilever.

Further, a support assembly is provided below the first rotating shaft, and the support assembly is fixedly installed on the bearing seat along the extension plate by fixing;

When the whole test device is not in use, due to the long and heavy cantilever, the suspended cantilever will generate a large deflection force under the action of gravity, and the deflection force transmitted to the diaphragm coupling will easily cause its damage, so A support assembly is provided below the first rotating shaft, the support assembly can effectively counteract the deflection force generated by the cantilever, thereby avoiding damage to the diaphragm coupling;

The support assembly includes a lifting cylinder and a V-shaped pad, the working end of the lifting cylinder is connected to the V-shaped pad, and the V-shaped pad is arranged below the second rotating shaft.

After the device test is completed, the cantilever is pulled out from the product under test. At this time, the lifting cylinder drives the V-shaped pad to rise, so that the V-shaped pad is supported on the bottom of the first rotating shaft.

A mounting groove is opened on the V-shaped block, and a rotating roller is arranged in the mounting groove through a rotating shaft.

The rotating roller can be effectively attached to the outer arc surface of the second rotating shaft, thereby ensuring the supporting function of the V-shaped pad.

Further, a detection sensor is provided above the clamping assembly on both sides, and the detection sensor is connected to the cylinder of the slide table, and the cylinder of the slide table drives the detection sensor to expand and contract; The extension limit buffer and the retraction limit buffer of the slider stroke; the mounting seat of the slider cylinder is provided with a device that simultaneously acts on the extension limit buffer and the retraction limit buffer A calibration block, the calibration block is provided with a boss, a through hole and a tightening screw, when the calibration block is installed, the boss abuts against the end of the protruding limit buffer, and the The retraction limit buffer passes through the through hole, and its end is flush with the outer surface of the calibration block, and the tightening screw is sleeved on the retraction limit buffer and compresses the calibration block .

The detection sensor used above is the NVH detection sensor. Its main function is to identify the electromagnetic noise, mechanical noise and reducer noise from the motor system, and realize component-level fault location by establishing a simple structure model of the electric drive assembly. The NVH detection sensor During detection, the detection end needs to be against the product to ensure the detection accuracy. Therefore, in this structure, the sliding table cylinder connected to the NVH test sensor has extremely high requirements on the stroke limit of the slider in the cylinder, so as to ensure that the test sensor is measuring Therefore, it is generally necessary to set an extension limit buffer and a retraction limit buffer on the cylinder of the slide table to limit the stroke of the slider in the cylinder in turn. When using it, it is necessary to first adjust the limit buffer and retract the limit buffer to adjust to the specified parameter requirements. In order to ensure the accuracy of the measuring sensor, the debugging process of the two limit buffers is very cumbersome. The slider in the cylinder needs to be replaced. The traditional way is to debug the two limit buffers again after replacing the slider and adjust them to their original positions, which is time-consuming and labor-intensive.

Therefore, the limit calibration of the two limit buffers on the slide cylinder is performed by setting the calibration block, so as to realize the function of quickly adjusting the two limit buffers to the standard position after replacing the slide cylinder.

The specific principle of use is: after the calibration block is installed and the two buffers are adjusted, the normal state is: when the tightening screw is tightened, the screw is tightened to compress the calibration block, and the boss on the calibration block and the limit buffer are stretched out The end of the limit abutment, the retraction limit buffer passes through the through hole opened on the calibration block, and the end of the retraction limit buffer does not protrude from the opening of the through hole, but is in contact with the calibration block. The outer surface of the part with the orifice is flush; if the two limit buffers are not adjusted to the specified position, it is an abnormal state, such as: there is a gap between the end of the protruding limit buffer and the boss or the protruding limit The end of the position buffer is stuck on the outside of the boss, the end of the retracted limit buffer protrudes from the opening of the through hole and protrudes from the outer surface of the calibration block or the end of the retracted limit buffer is in contact with the An inner concave surface is formed between openings of the through holes.

Further, the calibration block is provided with installation grooves, avoidance grooves, cover plate installation holes, clamping blocks, abutting ends and extension blocks, wherein:

The tightening screw is arranged in the installation groove, and the installation groove is used for conveniently turning the tightening screw when the calibration block is installed.

The avoidance groove is set corresponding to the tightening end of the extension limit buffer, and the ends of the extension limit buffer and the retraction limit buffer are provided with hexagonal threaded holes, which are convenient to rotate for adjustment, so in the calibration An avoidance groove is provided on the boss of the block to prevent the calibration block from blocking the hexagonal threaded hole protruding from the end of the limit buffer, thereby affecting its adjustment.

The cover plate installation hole is provided on the outer surface of the calibration block located at the opening of the through hole, and the cover plate can be installed on the outer surface of the calibration block through the cover plate installation hole. Clearance to determine the extended position of the end of the retract limit buffer.

The clamping block is set in the groove provided on the mounting seat of the slide cylinder. When adjusting the two limit buffers, in order to prevent the limit buffer from driving the calibration block to rotate together when rotating, so A clamping block is arranged on the calibration block, and the clamping block is clamped in the groove provided on the mounting seat of the slide table cylinder, so that the calibration block can be limited and fixed.

The abutment end is arranged at the front end of the calibration block and abuts against the mounting seat of the slide cylinder, and the extension block is arranged at the abutment end; since the abutment end of the front end of the calibration block is a through hole One circle of the center of the circle is set. When the calibration block is pressed, if the connecting line of the two stress points at the abutting end passes through the center of the circle, the calibration block will tilt to the side of the depression, resulting in a shift in the position of the calibration block. Therefore, the extension block is set to change the force point of the abutting end of the calibration block, so that the connecting line of the two force points does not pass through the center of the circle, so as to maintain the force balance and avoid the position tilt of the calibration block.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a device according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a double-side clamping assembly according to an embodiment of the present invention.

Fig. 3 is a schematic diagram of a single clamping mechanism according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of a jacking mechanism according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a torque transmission mechanism according to an embodiment of the present invention.

Fig. 6 is a sectional view of a torque transmission mechanism according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of the installation structure of the sliding table cylinder and the calibration block according to an embodiment of the present invention.

Fig. 8 is a schematic diagram of a block installation structure according to an embodiment of the present invention.

FIG. 9 is a schematic structural diagram of a calibration block according to an embodiment of the present invention.

In the figure: 1. Conveyor line; 2. Double-sided clamping components; 3. Torque testing components;

1.1, base plate; 1.2, jacking plate; 1.3, first jacking cylinder; 1.4, second jacking cylinder; 1.5, guide shaft;

2.1, the first clamping mechanism; 2.2, the second clamping mechanism; 2.3, the push plate; 2.4, the oil cylinder expansion head; 2.5, the product positioning head; 2.6, the base; 2.7, the first linear track; Drive electric cylinder; 2.9, second linear track; 2.10, second drive electric cylinder; 2.11, lock block; 2.12, clamping tension rod;

3.1 cantilever; 3.2, first rotating shaft; 3.3, second rotating shaft; 3.4, diaphragm coupling; 3.5, bearing seat; 3.6, buffer rod; 3.7, spring; 3.8, groove; , lifting cylinder; 3.11, spacer; 3.12, installation groove; 3.13, rotating roller;

10. Test sensor; 100, slider; 200, extend limit buffer; 300, retract limit buffer; 400, calibration block; 500, boss; 600, through hole; 700, tighten screw; 800, Installation groove; 900, avoidance groove; 1000, cover plate installation hole; 1100, clamp block; 1200, groove; 1300, extension block.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

Please refer to Figures 1-9. It should be noted that in the description of the present invention, it needs to be explained that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer ” and other indications are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that is usually placed when the product of the invention is used. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance. The terms "horizontal", "vertical", "overhanging" and the like do not imply that the part is absolutely level or overhanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal than "vertical", and it does not mean that the structure must be completely horizontal, but can be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected, or integrally connected, can be mechanically connected, can also be electrically connected, can be directly connected, can also be indirectly connected through an intermediary, and can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention in specific situations.

An embodiment of the present invention discloses a torque testing device, which includes a device body. As shown in FIG. The side clamping assembly 2, the double-sided clamping assembly 2 is used to clamp and fix the products of the conveying line 1, which includes symmetrical first clamping mechanisms respectively arranged on the left and right sides of the conveying line 1 2.1 and the second clamping mechanism 2.2;

Also includes a torque test assembly 3, the torque test assembly 3 is used to detect the torque of the product, which includes a torque detection mechanism, a torque transmission mechanism and a cantilever that is inserted into the product and rotates synchronously with the output end of the product, and the cantilever passes through the A torque transmission mechanism is connected with the torque detection mechanism.

The product is placed on the tray and transported to the double-sided clamping assembly 2 through the conveying line 1. The product is located between the first clamping mechanism 2.1 and the second clamping mechanism 2.2, and passes through the first clamping mechanism 2.1 and the second clamping mechanism. 2.2 Cooperate to clamp and position the product; then the cantilever in the torque test component 3 is stretched out and inserted into the output end of the product. When the product is powered on and starts to work, the cantilever rotates synchronously, and the torque generated by the rotation is transmitted through the torque transmission mechanism It is transmitted to the torque detection mechanism for torque detection.

The torque test device designed in this scheme can automatically complete product delivery, clamping positioning and torque detection, and the whole process is automatically operated with a high degree of automation, which can effectively improve the overall detection efficiency and detection accuracy of the product.

On the basis of the above embodiments, specifically, as shown in FIG. 4 , the conveying line 1 is provided with a jacking mechanism, and the jacking mechanism is located at the first clamping mechanism 2.1 and the second clamping mechanism 2.2. In the middle, it includes base plate 1.1, jacking plate 1.2 and jacking cylinder, wherein:

The jacking cylinder is arranged on the base plate 1.1, the working end of the jacking cylinder is connected to the lifting plate 1.2, the base plate 1.1 is also provided with a guide shaft 1.5, and the lifting plate 1.2 is movably set on the guide shaft 1.5;

When the pallet moves to the designated position on the conveying line 1 with the product, the stopping cylinder under the conveying line 1 stretches out to block the pallet, so that the pallet does not move forward, and then the jacking cylinder drives the jacking plate 1.2 to rise, and the The pallets together with the products are lifted from the conveyor line 1.

The jacking cylinder includes a first jacking cylinder 1.3 and a second jacking cylinder 1.4; the first jacking cylinder 1.3 and the second jacking cylinder 1.4 have different strokes and different functions, specifically:

When the first jacking cylinder 1.3 and the second jacking cylinder 1.4 work at the same time, the pallet and its products are lifted from the conveying line to the highest point, and then the clamping mechanism will clamp and fix the products on the pallet;

After the product clamping is completed, the pallet is driven down by the second jacking cylinder 1.4 to separate from the product, and the supporting and fixing effect of the pallet on the product is removed to prevent the product from being affected for measurement; here, if the second jacking cylinder 1.4 is not installed, only The first lifting cylinder 1.3 will directly lower the pallet to the conveying line. Although there will be a stopping cylinder on the conveying line to block the pallet, it will also cause wear and tear on the pallet and the conveying line, so it is necessary to use the second jacking cylinder 1.4 to lower the pallet The pallet is lowered to the middle height. After the product is inspected, the pallet is raised to the highest point by the second jacking cylinder 1.4 to catch the product, and finally the first jacking cylinder 1.3 and the second jacking cylinder 1.4 work simultaneously to drive Trays and products drop onto the conveyor line and continue onward.

On the basis of the above embodiments, specifically, as shown in Figure 2, the first clamping mechanism 2.1 and the second clamping mechanism 2.2 have the same structure, and both include a push plate 2.3, a mounting block, and several Oil cylinder telescopic head 2.4;

The push plate 2.3 can be installed in translation, the installation block is fixedly arranged on the push plate 2.3, and the telescopic head 2.4 of the oil cylinder is arranged on the installation block. When clamping, the telescopic head 2.4 of the oil cylinder tops live product.

When the first clamping mechanism 2.1 and the second clamping mechanism 2.2 clamp the product, the two push plates 2.3 move closer to the center, and after the push plate 2.3 moves to the corresponding position with the oil cylinder telescopic head 2.4, the oil cylinder telescopic head 2.4 Complete the clamping after reaching out to withstand the product.

There are several oil cylinder telescopic heads 2.4 on the first clamping mechanism 2.1 and the second clamping mechanism 2.2, and the first clamping mechanism 2.1 is also provided with a product positioning head 2.5; multiple oil cylinder telescopic heads 2.4 simultaneously withstand product, thereby improving the stability of clamping, before the oil cylinder telescopic head 2.4 stretches out to withstand the product, the product is positioned by the product positioning head 2.5 stretching out, and then the product is clamped and fixed after positioning.

On the basis of the above embodiments, specifically, as shown in Fig. 3 and Fig. 4, the double-sided clamping assembly 2 further includes a base 2.6 on which a first linear track 2.7, a first drive Electric cylinder 2.8, second linear track 2.9 and second drive electric cylinder 2.10, wherein:

The push plate 2.3 in the first clamping mechanism 2.1 is disposed on the first linear track 2.7 in a translational manner, and the active end of the first electric drive cylinder 2.8 is connected to the push plate 2.3;

The push plate 2.3 in the second clamping mechanism 2.2 is disposed on the second linear track 2.9 in a translational manner, and the active end of the second electric drive cylinder 2.10 is connected with the push plate 2.3.

Drive the push plate 2.3 to translate on the linear track by driving the electric cylinder; at the same time, lock blocks 2.11 are provided on the first linear track 2.7 and the second linear track 2.9; when the push plate 2.3 moves to the designated position, it needs Keep still, so the push plate 2.3 is locked on the linear track by the lock block 2.11 to prevent the push plate 2.3 from being subjected to reaction force and position offset when the telescoping head 2.4 of the oil cylinder stretches out to push the product.

On the basis of the above embodiment, specifically, as shown in Figure 3 and Figure 4, the clamping and tensioning rod 2.12 is provided between the first clamping mechanism 2.1 and the second clamping mechanism 2.2, so One end of the clamping tension rod 2.12 is fixed on the push plate 2.3 in the first clamping mechanism 2.1, and the other end of the clamping tension rod 2.12 is fixed on the push plate 2.3 in the second clamping mechanism 2.2. On the push plate 2.3.

When the telescoping head 2.4 of the oil cylinder stretches out to lift the product, the push plate 2.3 will be subjected to the reaction force and move on the linear track. In order to avoid this situation, a clamping and tensioning rod 2.12 is set between the two push plates 2.3. When the push plate 2.3 moves, the clamping and tensioning rod 2.12 is not engaged with the clamping cylinder; the clamping cylinder remains open when ventilated; when it moves in place, the clamping cylinder is cut off, and the clamping cylinder and the tie rod are in mechanical engagement (dead state) , thereby limiting the displacement of the push plate.

On the basis of the above embodiments, specifically, as shown in Figure 5 and Figure 6, the torque transmission mechanism includes a first shaft 3.1 cantilever; 3.2, a second shaft 3.3, a diaphragm coupling 3.4, a bearing seat 3.5 and Buffer components, where:

The tail end of the cantilever is inserted into the first rotating shaft 3.1 cantilever; 3.2 the interior is connected with the first rotating shaft 3.1 cantilever; 3.2 is connected by a rectangular spline, and the connection method of the rectangular spline can make the tail end of the cantilever insert into the first rotating shaft 3.1 Cantilever; 3.2 The rear is free to expand and contract in the axial direction, and the cantilever can carry the first rotating shaft 3.1 Cantilever when rotating; 3.2 Synchronous rotation; the first rotating shaft 3.1 Cantilever; 3.2 The diaphragm coupling 3.4 and the The second rotating shaft 3.3 is connected, and the second rotating shaft 3.3 is arranged on the bearing seat 3.5 and connected with the torque detection mechanism; the shaft center of the second rotating shaft 3.3 is provided with a groove 3.8, and the buffer assembly It is movably arranged in the groove 3.8, and at the same time, the tail end of the cantilever passes through the first rotating shaft 3.1 cantilever; 3.2 and then abuts against the buffer assembly.

The torque transmission mechanism uses the diaphragm coupling 3.4 to connect the two rotating shafts, and the diaphragm coupling 3.4 cannot bear a large radial impact force, but when the cantilever is inserted into the driving end of the drive motor, a large impact force will be generated. When the cantilever expands and contracts, it will act on the diaphragm coupling 3.4, thereby causing damage to the diaphragm coupling 3.4; therefore, by setting a buffer component at the end of the cantilever, when the cantilever is inserted into the product under test, the cantilever The impact force generated by expansion and contraction will be transmitted to the buffer assembly, thereby effectively avoiding the situation that the diaphragm coupling 3.4 is damaged due to axial pressure.

On the basis of the above embodiments, specifically, as shown in Figure 5 and Figure 6, the buffer assembly includes a buffer rod 3.6 and a spring 3.7, the spring 3.7 is sleeved on the buffer rod 3.6, and the buffer rod 3.6 is inserted into the groove 3.8, and the front end of the buffer rod 3.6 is fixedly connected to the tail end of the cantilever; a stop block 1100 is provided between the buffer rod 3.6 and the outer rotating shaft to ensure that during the test , when the outer rotating shaft is rotating, the buffer rod 3.6 and the rotating shaft rotate synchronously, so as to avoid additional inertial disturbance due to asynchrony when the rotation starts and stops.

When the cantilever is inserted into the product under test, the cantilever will shrink back under the force, thereby driving the buffer rod 3.6 to translate backward. The buffer rod 3.6 will compress the spring 3.7 while moving backward. When the cantilever is pulled out from the product under test When going out, the resilient force of spring 3.7 can make buffer bar 3.6 reset with cantilever.

On the basis of the above embodiments, specifically, as shown in Figure 5 and Figure 6, the first rotating shaft 3.1 is cantilevered; 3.2 is provided below a support assembly, and the support assembly is fixed and installed on the extension plate 3.9 by fixing. above the bearing seat 3.5;

When the whole test device is not in use, due to the long and heavy cantilever, the suspended cantilever will generate a large deflection force under the action of gravity, and the deflection force transmitted to the diaphragm coupling 3.4 will easily cause its damage. Therefore, a support assembly is provided below the first rotating shaft 3.1 cantilever; 3.2, and the support assembly can effectively offset the deflection force generated by the cantilever, thereby avoiding damage to the diaphragm coupling 3.4;

The support assembly includes a lifting cylinder 3.10 and a V-shaped pad 3.11, the working end of the lifting cylinder 3.10 is connected to the V-shaped pad 3.11, and the V-shaped pad 3.11 is arranged below the second rotating shaft 3.3.

After the device test was completed, the cantilever was pulled out from the product under test, and now the lift cylinder 3.10 drove the V-shaped cushion block 3.11 to rise, so that the V-shaped cushion block 3.11 was supported on the first rotating shaft 3.1 cantilever; 3.2 bottom.

A mounting groove 3.12 is opened on the V-shaped pad 3.11, and a rotating roller 3.13 is arranged in the mounting groove 3.12 through a rotating shaft.

The rotating roller 3.13 can be effectively attached to the outer arc surface of the second rotating shaft 3.3, thereby ensuring the supporting function of the V-shaped cushion block 3.11.

On the basis of the above-mentioned embodiments, specifically, as shown in Fig. 7-Fig. The detection sensor is telescopic; the slide table cylinder is provided with an extension limit buffer 200 and a retraction limit buffer 300 for limiting the stroke of the slider 100 in the cylinder; on the mounting seat of the slider 100 cylinder A calibration block 400 that simultaneously acts on the extension limit buffer 200 and the retraction limit buffer 300 is provided, and the calibration block 400 is provided with a boss 500, a through hole 600 and a tightening screw 700, when After the calibration block 400 is installed, the boss 500 abuts against the end of the extension limit buffer 200, the retraction limit buffer 300 passes through the through hole 600, and its end The portion is flush with the outer surface of the calibration block 400 , and the tightening screw 700 is sleeved on the retraction limit buffer 300 and compresses the calibration block 400 .

The detection sensor used above is the NVH detection sensor. Its main function is to identify the electromagnetic noise, mechanical noise and reducer noise from the motor system, and realize component-level fault location by establishing a simple structure model of the electric drive assembly. The NVH detection sensor During detection, the detection end needs to be against the product to ensure the detection accuracy. Therefore, in this structure, the slide table cylinder connected to the test sensor has extremely high requirements on the stroke limit of the slider 100 in the cylinder, so as to ensure that the test sensor is measuring Therefore, it is generally necessary to set the extension limit buffer 200 and the retraction limit buffer 300 on the cylinder of the slide table to limit the stroke of the slider 100 in the cylinder in turn. When using it, it is necessary to first set the limit The position buffer and the retraction limit buffer 300 are adjusted to the specified parameter requirements. In order to ensure the accuracy of the measurement sensor, the debugging process of the two limit buffers is very cumbersome. After using for a period of time, the slide block 100 in the cylinder needs to be replaced. The traditional way is to debug the two limit buffers again after replacing the slide block 100, and adjust to the original position, which is time-consuming and laborious.

Therefore, by setting the calibration block 400 to perform limit calibration on the two limit buffers on the slide cylinder, the function of quickly adjusting the two limit buffers to the standard position after replacing the slide cylinder is realized.

The specific principle of use is: after the calibration block 400 is installed and the two buffers are adjusted, the normal state is: when the tightening screw 700 is tightened, the tightening screw 700 compresses the calibration block 400, and the boss 500 on the calibration block 400 and The end of the extended limit buffer 200 abuts, the retracted limit buffer 300 passes through the through hole 600 provided on the calibration block 400, and the end of the retracted limit buffer 300 does not pass through the through hole 600 The orifice protrudes, but is flush with the outer surface of the calibration block 400 where the orifice is opened; if the two limit buffers are not adjusted to the specified position, it is an abnormal state, such as: extending the limit buffer 200 There is a gap between the end and the boss 500 or the end of the protruding limit buffer 200 is stuck outside the boss 500, and the end of the retracted limit buffer 300 protrudes from the opening of the through hole 600 And an inner concave surface is formed between the outer surface of the protruding calibration block 400 or the end of the retracted limit buffer 300 and the opening of the through hole 600 .

On the basis of the above-mentioned embodiments, specifically, as shown in Fig. 7-Fig. Extension block 1300, wherein:

The tightening screw 700 is disposed in the installation groove 800 , and the installation groove 800 is used for conveniently turning the tightening screw 700 when the calibration block 400 is installed.

The avoidance groove 900 is set corresponding to the tightening end of the extension limit buffer 200, and the ends of the extension limit buffer 200 and the retraction limit buffer 300 are provided with hexagonal threaded holes, which are convenient to rotate for adjustment Therefore, an avoidance groove 900 is provided at the boss 500 of the calibration block 400 to prevent the calibration block 400 from blocking the hexagonal threaded hole protruding from the end of the limit buffer 200, thereby affecting its adjustment.

The cover plate installation hole 1000 is provided on the outer surface of the calibration block 400 located at the opening of the through hole 600, and the cover plate can be installed on the outer surface of the calibration block 400 through the cover plate installation hole 1000. The protruding position of the end of the retraction limit buffer 300 is judged based on the gap between the calibration block 400 and the calibration block 400 .

The clamping block 1100 is clamped in the groove 1200 provided on the mounting seat of the slide cylinder. When adjusting the two limit buffers, in order to prevent the limit buffer from driving the calibration block 400 together when rotating, Rotate, so set the block 1100 on the calibration block 400, the block 1100 is stuck in the groove 1200 provided on the mounting seat of the slide cylinder, so that the calibration block 400 can be limited and fixed.

The abutment end is arranged at the front end of the calibration block 400 and abuts against the mounting seat of the slide cylinder, and the extension block 1300 is arranged at the abutment end; since the abutment end of the front end of the calibration block 400 is It is arranged in a circle around the center of the through hole 600. When the calibration block 400 is pressed, if the connection line of the two stress points at the abutting end passes through the center of the circle, the calibration block 400 will tilt to the side of the depression, resulting in calibration The position of the block 400 is shifted, so the extension block 1300 is set to change the force point of the abutting end of the calibration block 400, so that the connecting line of the two force points does not pass through the center of the circle, so as to maintain the force balance and avoid the position of the calibration block 400 Inclined situation.

The above embodiments are only to illustrate the technical concept and characteristics of the present invention. All equivalent changes or modifications shall fall within the protection scope of the present invention.

Claims (10)

1. A torque testing device, comprising a device body, is characterized in that: the device body comprises: Conveyor line, the products to be tested are placed on the pallets of the conveying line for conveying; The double-sided clamping assembly is used for clamping and fixing the products of the conveying line, which includes a symmetrical first clamping mechanism and a second clamping mechanism respectively arranged on the left and right sides of the conveying line. clamping mechanism; Torque test assembly, the torque test assembly is used to detect the torque of the product, which includes a torque detection mechanism, a torque transmission mechanism, and a cantilever inserted into the product to rotate synchronously with the output end of the product, and the cantilever passes through the torque transmission mechanism and The torque detection mechanism is connected. 2. The torque testing device according to claim 1, characterized in that: a jacking mechanism is provided on the conveying line, and the jacking mechanism is located in the middle of the first clamping mechanism and the second clamping mechanism, It includes a base plate, a jacking plate, and a jacking cylinder, of which: The jacking cylinder is arranged on the base plate, the working end of the jacking cylinder is connected to the lifting plate, a guide shaft is also arranged on the base plate, and the lifting plate is movably arranged on the guide plate. on axis. 3. The torque testing device according to claim 1, characterized in that: the first clamping mechanism and the second clamping mechanism have the same structure, and both include a push plate, a mounting block, and several oil cylinder telescoping heads ; The push plate can be set in translation, the installation block is fixedly arranged on the push plate, the telescoping head of the oil cylinder is arranged on the mounting block, and the telescoping head of the oil cylinder withstands the product during clamping. 4. The torque testing device according to claim 3, characterized in that: the double-sided clamping assembly also includes a base, and the base is provided with a first linear track, a first driving electric cylinder, and a second linear track and the second drive electric cylinder, wherein: The push plate in the first clamping mechanism can be disposed on the first linear track in a translational manner, and the working end of the first electric drive cylinder is connected with the push plate; The push plate in the second clamping mechanism is disposed on the second linear track in a translational manner, and the working end of the second electric drive cylinder is connected with the push plate. 5. The torque testing device according to claim 4, characterized in that: a clamping tension rod is provided between the first clamping mechanism and the second clamping mechanism, and the clamping tension rod One end of the clamping rod is fixed on the push plate in the first clamping mechanism, and the other end of the clamping tension rod is fixed on the push plate in the second clamping mechanism. 6. The torque testing device according to claim 1, wherein the torque transmission mechanism comprises a first rotating shaft, a second rotating shaft, a diaphragm coupling, a bearing seat and a buffer assembly, wherein: The tail end of the cantilever is inserted into the first rotating shaft and connected with the first rotating shaft through a rectangular spline, so that the cantilever and the first rotating shaft rotate synchronously, and the first rotating shaft is coupled through the diaphragm The device is connected with the second rotating shaft, the second rotating shaft is arranged on the bearing seat and connected with the torque detection mechanism; the shaft center of the second rotating shaft is provided with a groove, and the buffer assembly can move is disposed in the groove, and at the same time, the tail end of the cantilever passes through the inside of the first rotating shaft and abuts against the buffer assembly. 7. The torque testing device according to claim 6, wherein the buffer assembly includes a buffer rod and a spring, the spring is sleeved on the buffer rod, and the buffer rod is inserted into the groove, And the front end of the buffer rod is fixedly connected with the tail end of the cantilever. 8. The torque testing device according to claim 6, characterized in that: a support assembly is provided below the first rotating shaft, and the support assembly is fixedly installed on the bearing seat along the extension plate by fixing; the support assembly The assembly includes a lifting cylinder and a V-shaped pad, the working end of the lifting cylinder is connected to the V-shaped pad, the V-shaped pad is arranged below the second rotating shaft, and the V-shaped pad is provided with An installation groove, a rotating roller is arranged in the installation groove through a rotating shaft. 9. The torque testing device according to claim 1, characterized in that: a detection sensor is arranged above the clamping assembly on both sides, the detection sensor is connected to the cylinder of the slide table, and the cylinder of the slide table drives the detection sensor telescoping; the slide table cylinder is provided with an extension limit buffer and a retraction limit buffer used to limit the stroke of the slider in the cylinder; Out of the limit buffer and the calibration block of the retraction limit buffer, the calibration block is provided with a boss, a through hole and a tightening screw, when the calibration block is installed, the boss and the The end of the extended limit buffer abuts, the retracted limit buffer passes through the through hole, and its end is flush with the outer surface of the calibration block, and the tightening screw is sleeved on the Retract the stop buffer and compress the calibration block. 10. The torque testing device according to claim 9, characterized in that: the calibration block is provided with a mounting groove, an avoidance groove, a cover plate mounting hole, a clamping block, an abutment end and an extension block, wherein: The fastening screw is arranged in the installation groove; The avoidance groove is set corresponding to the tightening end of the extension limit buffer; The mounting hole of the cover plate is opened on the outer surface of the calibration block located at the opening of the through hole; The clamping block is set in the groove provided on the mounting seat of the slide cylinder; The abutting end is arranged at the front end of the calibration block and abuts against the mounting seat of the slide cylinder; The extension block is arranged at the abutting end.

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