CN201408119Y - Automobile booster curve comprehensive performance testing equipment - Google Patents

Abstract

An automobile booster curve comprehensive performance testing device, which belongs to the technical field of testing equipment, is characterized in that: a bush fits in a gap with an outer casing, the diameter of the upper end of a replaceable push rod is smaller than the diameter of the lower end, the diameter of the upper end of the connecting rod is larger than the diameter of the lower end, and the diameter of the push rod seat is the same as that of the lower end. The sealing seat is fixed together by screws, the upper surface of the sealing seat is in contact with the lower surface of the cylindrical transition washer, the upper hole is matched with the force end of the 0.5KN force sensor, the middle hole is matched with the small diameter end of the post, and the lower hole is matched with the Cooperate with the post flange, the upper end of the small spring is in contact with the force-bearing end of the 0.5KN force sensor, the other end of the extension seat protrudes out of the jacket, the sensor sheath is a stepped shaft, and the outer surface of the large-diameter end has a keyway in the axial direction. A rectangular spring washer is installed on the shaft shoulder of the sensor sheath, and the 10KN force sensor is fixedly connected to the cylindrical disk spring seat by screws. The beneficial effect is that it can accurately measure whether the output force of the automobile booster is zero when the input force is zero.

Description

Automobile booster curve comprehensive performance testing equipment

technical field

The utility model belongs to the technical field of detection equipment.

Background technique

At present, the known comprehensive performance testing equipment for the curve of the automobile booster can detect the static seal and the dynamic seal of the automobile booster, and use a 5KN input force sensor at the bottom of the device and a 10KN output force sensor at the top of the device to detect the input and output force curve. However, the 10KN output force sensor has a relatively low accuracy due to its large measuring range, so a very important self-amplification performance index of the booster cannot be detected, that is, when the input force is zero, its output force must also be zero. When the input force of the car booster is zero and its output force is small, if the accuracy of the sensor is low, this data cannot be collected, resulting in wrong judgments.

Contents of the invention

The purpose of the utility model is to provide a comprehensive performance detection device for the curve of the automobile booster, which solves the problem that the existing equipment cannot detect the self-amplification performance index of the automobile booster.

The technical scheme of the utility model is: the jacket and the bushing are cylindrical bodies, the bushing and the jacket are in clearance fit, the replaceable push rod is a stepped shaft, the diameter of the upper end is smaller than the diameter of the lower end, and there is a 360-degree C-shaped groove at the upper end, and the connecting rod is A stepped shaft, the diameter of the upper end is larger than the diameter of the lower end, the upper end has a small hole in the axial direction to install a small spring, the lower end has a large hole in the axial direction to fit with the upper end of the post, and the lower end of the post has four small holes in the radial direction. The C-shaped elastic lock ring locks four steel balls, and the steel balls fall into the C-shaped groove of the connecting rod. There is a flange in the middle of the connecting rod that is stuck on the upper surface of the sealing seat, and the middle of the flange-shaped sealing seat is a step. The small-diameter hole fits with the post gap, the large-diameter hole fits with the flange-shaped push rod seat, and a Y-shaped sealing ring is installed inside, and the Y-shaped seal ring cooperates with the post, and the push rod seat and the sealing seat are fixed by screws Together, the upper surface of the sealing seat is in contact with the lower surface of the cylindrical transition washer. The transition washer has three holes with different diameters from top to bottom. The small diameter end of the rod is matched, the lower hole is matched with the flange of the post, the upper end of the small spring is in contact with the force end of the 0.5KN force sensor, and there is a small hole in the center of the contact part between the extension seat and the 0.5KN force sensor, and there is a small hole at the small hole. A cylinder, the cylinder fits with a small hole at the upper end of the pressure sensor sheath, and the other end of the extension seat protrudes out of the jacket. The pressure sensor sheath is a stepped shaft, with a C-shaped large hole at the lower end in the axial direction, and a C-shaped large hole at the upper end on the shaft. There is a small hole upwards, a vent hole at the top, a keyway on the outer surface of the large diameter end in the axial direction, a set screw to limit its rotation, the outer surface of the large diameter end is clearance fit with the inner surface of the bushing, and the pressure sensor sheath shaft A rectangular spring washer is installed on the shoulder, the upper end of the rectangular spring is in contact with the rectangular spring, the upper end of the rectangular spring is connected with the cylindrical rectangular spring seat, the inner diameter of the rectangular spring is matched with the small diameter shaft of the pressure sensor sheath and the cylindrical boss of the rectangular spring seat, and the rectangular spring The lower end of the seat has a large hole in the axial direction to accommodate the rectangular spring. The upper end of the hole has a cylindrical boss. The upper end of the rectangular spring seat has a small hole to match the force end of the 10KN force sensor. The outer surface of the rectangular spring seat and the inner surface of the bushing Clearance fit, the 10KN force sensor is fixedly connected to the cylindrical disc spring seat by screws. The disc spring seat has 3 stepped holes with different diameters in the axial direction. The hole is equipped with a disc spring washer, and the large hole is equipped with a group of disc springs. The outer surface of the disc spring seat and the inner surface of the bushing are in clearance fit, and the outer surface has a keyway in the axial direction, and a set screw prevents it from rotating. The pressure rod is a stepped shaft with a small diameter at the lower end. The disc spring is sleeved on the shaft. The diameter at the upper end is large and in contact with the joint. The middle part is an external thread, which is screwed with the internal thread of the connecting seat. The power cylinder is connected, and the other end is in contact with the pressure rod.

The beneficial effect of the utility model is that it can accurately measure whether the output force of the automobile booster is zero when the input force is zero, the structure is simple, and the detection accuracy is greatly improved.

Description of drawings

Fig. 1 is a structural front view of the utility model;

Fig. 2 is a structural sectional view of the utility model.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described:

As shown in Figure 1, 31 is the output pressure detection device A, 32 is the dummy casing carriage device, 33 is the dummy casing positioning device, 34 is the output pressure detection device B, 35 is the bench device, and 36 is the gas distribution box.

As shown in Figure 2, 1 is a replaceable push rod, 2 is a push rod seat, 3 is an extension rod, 4 is an extension seat, 5 is a cylinder, 6 is a bushing, 7 is a disc spring seat, and 8 is a pressure rod , 9 is the connection seat, 10 is the joint, 11 is the booster cylinder seat, 12 is the disc spring washer, 13 is the rectangular spring seat, 14 is the rectangular spring washer, 15 is the pressure sensor sheath, 16 is the small spring, 17 is Transition gasket, 18 is an overcoat, 19 is a sealing seat, 20 is an elastic locking ring, 21 is a 10KN force sensor, 22 is a rectangular spring, and 23 is a 0.5KN force sensor.

In FIG. 1 , the detection equipment is composed of an output pressure detection device A31 , a dummy casing carriage device 32 , a dummy casing positioning device 33 , an output pressure detection device B34 , a bench device 35 , and a gas distribution box 36 . The detection equipment consists of the output pressure detection device A31 through the flange structure, and uses 6 M10 hexagon socket screws to connect with the first large plate on the top of the bench device 35; The joints 10 are connected, and the output pressure detection device A31 drives the dummy shell carriage device 32 to move up and down on two Φ30 axes; the dummy shell positioning device 33 is fixed on the bench device 35 with 48 M10 socket head cap screws and 24 Φ8 taper pins On the large plate on the second floor; the output pressure detection device B34 is driven by a cylinder fixed on the stand device 35 to move up and down on two Φ30 axes; the stand device 35 is fixed on the ground by anchor bolts.

The action process of the detection equipment: the cylinder pushes the output pressure detection device B34 to send the tested piece upward to the dummy shell positioning device 33, the six cylinders in the dummy shell positioning device 33 stretch out to hold the tested piece, and the output pressure detection device B34 returns When it reaches the specified position, the gas-hydraulic booster cylinder in the output pressure detection device A31 stretches out to drive the dummy case carriage device 32 to move down, so that the dummy case in the dummy case carriage device 32 is closely connected with the test piece, and the test piece arrives in place signal Start detection after sending.

In FIG. 2 , both the outer casing 18 and the bushing 6 are cylindrical, and the outer surface of the bushing 6 is in clearance fit with the inner surface of the outer casing 18 . The changeable push rod 1 is shaped as a stepped shaft with a small diameter at the upper end and a larger diameter at the lower end, and a 360-degree C-shaped groove at the upper end. The shape of the connecting rod 3 is a stepped shaft, the diameter of the upper end is large, and the diameter of the lower end is small. The upper end has a small hole in the axial direction to install the small spring 16, and the lower end has a large hole in the axial direction to cooperate with the upper end of the connecting rod 3. The lower end of the connecting rod 3 Four small holes in the radial direction lock four steel balls through the C-shaped elastic lock ring 20. The steel balls fall into the C-shaped groove of the post 3, and a flange in the middle of the post 3 is stuck on the sealing seat 19. on the upper surface, so that the post 3 will not fall. The shape of the sealing seat 19 is a flange shape, with a stepped hole in the middle, the small diameter hole is in clearance fit with the connecting rod 3, the large diameter hole is matched with the flange-shaped push rod seat 2, and a Y-shaped sealing ring is installed inside, Y-shaped The sealing ring cooperates with the connecting rod, and the push rod seat 2 and the sealing seat 19 are fixed together by four M4 inner hexagon screws. The sealing seat 19 is fixed by the outer cover 18 in the axial direction, so that it cannot move up and down, and an O-ring is installed at the lower end of the sealing seat 19 . The upper surface of the sealing seat 19 is in contact with the lower surface of the cylindrical transition washer 17. The transition washer 17 has three holes with different diameters from top to bottom. The small diameter end of the connecting rod 3 cooperates, and the lower hole cooperates with the flange of the connecting rod 3 . The upper end of little spring contacts with 0.5KN force sensor 23 stressed end. The 0.5KN force sensor 23 is fixed on a thin-plate-shaped extension seat 4 by four countersunk screws. There is a small hole in the center of the contact part between the extension seat 4 and the 0.5KN force sensor 23, and a cylinder is welded at the small hole. Cooperate with a small hole gap on the upper end of the pressure sensor sheath, the other end of the extension seat 4 stretches out of the outer cover 18, and when the cylinder 5 stretches out, the movement of the 0.5KN force sensor is limited by the extension seat 4. The pressure sensor sheath is a stepped shaft, the lower end has a C-shaped large hole in the axial direction, the upper end has a small hole in the axial direction, the top end has a vent hole, and the outer surface of the large diameter end has a keyway in the axial direction. The screw restricts its rotation, and the outer surface of the large-diameter end is in clearance fit with the inner surface of the bushing 6 . A rectangular spring washer 12 is installed at the shoulder of the pressure sensor sheath. The upper end of the rectangular spring 22 is connected to the cylindrical rectangular spring seat 13. The inner diameter of the rectangular spring 22 is matched with the small diameter shaft of the pressure sensor sheath and the cylindrical boss of the rectangular spring seat. The lower end of the rectangular spring seat 13 has a large hole in the axial direction to accommodate the rectangular spring 22. The upper end of the hole has a cylindrical boss. The upper end of the rectangular spring seat 13 has a small hole to cooperate with the stressed end of the 10KN force sensor. The outer surface of the rectangular spring seat 13 The surface is in clearance fit with the inner surface of the bushing 6 . The 10KN force sensor is fixedly connected to the cylindrical disc spring seat through 4 M5 inner hexagon screws. There are three stepped holes with different diameters in the disc spring seat in the axial direction, the small hole at the lower end matches the small diameter end of the pressure rod, the disc spring washer 12 is installed in the middle hole, and a group of disc springs are installed in the large hole. The outer surface of the shaped spring seat and the inner surface of the bushing 6 are clearance fit, and the outer surface has a keyway in the axial direction, and a set screw prevents it from rotating. Bearing bar 8 is a stepped shaft, the lower end diameter is small, disc spring is sleeved on the shaft, the upper end diameter is large, contacts with the joint, the middle part is an external thread, and is screwed with the internal thread of the connecting seat. One end of the joint is connected with the gas-hydraulic booster cylinder through a set screw, and the other end is in contact with the pressure bearing rod 8, and the shaft shoulder is stuck on the connecting seat, so that it can drive the connecting seat to move upward. The connecting seat is flange-shaped, and is fixedly connected to the jacket 18 by 6 M8 inner hexagon screws. The M10 inner hexagon screws are connected to the upper large plate, and the jacket 18 is connected to the lower large plate by six M10 screws.

The action process of the detection equipment: the replaceable push rod pushes up the connecting rod to move, and the force is applied by the small spring 0.5KN force sensor. At this time, the 0.5KN force sensor works. After the connecting rod moves 2mm, it contacts with the transition washer, and the transition washer moves upward. After the transition washer moves up 3mm, the transition washer is in contact with the pressure sensor sheath, and the 0.5KN force sensor does not work. The pressure sensor sheath starts to move upward, and the rectangular spring seat is pushed upward by the rectangular spring. At this time, the 10KN force sensor starts to work, the disc spring seat moves upward, and the compressed disc spring is deformed, thereby drawing the input and output force curve.

Working principle: When the input force is very small, the output force is also very small at this time. At this time, the high-precision 0.5KN force sensor is subjected to force output value, and the 10KN force sensor is not stressed. When the input force becomes large, the output force is also at this time. It becomes very large, the 0.5KN force sensor is disengaged and no longer bears force, and the 10KN force sensor outputs a value under force.

Claims (1)

1. An automobile booster curve comprehensive performance testing device, characterized in that: the jacket and the bushing are cylindrical, the bushing and the jacket are in clearance fit, the replaceable push rod is a stepped shaft, the diameter of the upper end is smaller than the diameter of the lower end, and there is a 360-degree C-shaped groove, the post is a stepped shaft, the diameter of the upper end is larger than the diameter of the lower end, there is a small hole on the upper end in the axial direction to install a small spring, and a large hole in the axial direction on the lower end is matched with the upper end of the post. There are four small holes in the radial direction, and the four steel balls are locked by the C-shaped elastic locking ring. There is a stepped hole in the middle of the blue-shaped sealing seat, the small-diameter hole is matched with the post, the large-diameter hole is matched with the flange-shaped push rod seat, and a Y-shaped sealing ring is installed inside, and the Y-shaped sealing ring is matched with the post. The push rod seat and the sealing seat are fixed together by screws. The upper surface of the sealing seat is in contact with the lower surface of the cylindrical transition washer. The transition washer has 3 holes with different diameters from top to bottom. The upper hole is connected to the 0.5KN force sensor. The force-bearing end is matched, the middle hole is matched with the small-diameter end of the post, the lower hole is matched with the flange of the post, the upper end of the small spring is in contact with the force-bearing end of the 0.5KN force sensor, and the extension seat is in contact with the contact part of the 0.5KN force sensor There is a small hole in the center, and there is a cylinder at the small hole. The cylinder fits with the small hole at the upper end of the pressure sensor sheath, and the other end of the extension seat protrudes out of the jacket. The pressure sensor sheath is a stepped shaft, and the lower end is in the axial direction. There is a C-shaped large hole, a small hole in the upper end in the axial direction, a vent hole in the top end, a keyway on the outer surface of the large diameter end in the axial direction, a set screw to limit its rotation, the outer surface of the large diameter end and the inner surface of the bushing Surface clearance fit, a rectangular spring washer is installed at the shoulder of the pressure sensor sheath, the upper end of the rectangular spring is in contact with the rectangular spring, the upper end of the rectangular spring is connected with the cylindrical rectangular spring seat, the inner diameter of the rectangular spring is in contact with the small diameter shaft of the pressure sensor sheath and the rectangular spring There is a large hole on the lower end of the rectangular spring seat in the axial direction to accommodate the rectangular spring. There is a cylindrical boss on the upper end of the hole. There is a small hole on the upper end of the rectangular spring seat to match the force end of the 10KN force sensor. The rectangular spring The outer surface of the seat is matched with the inner surface of the bushing, and the 10KN force sensor is fixedly connected to the cylindrical disc spring seat by screws. The disc spring seat has three stepped holes with different diameters in the axial direction. The small diameter end of the pressure rod fits, the middle hole is equipped with a disc spring washer, and the large hole is equipped with a set of disc springs. The outer surface of the disc spring seat and the inner surface of the bushing are in clearance fit, and the outer surface has a keyway in the axial direction. A set screw prevents it from turning. The pressure rod is a stepped shaft with a small diameter at the lower end. The disc spring is sleeved on the shaft. The diameter at the upper end is large and contacts the joint. The middle part is an external thread that is screwed with the internal thread of the connecting seat. , one end of the joint is connected with the gas-hydraulic booster cylinder through a screw, and the other end is in contact with the pressure bearing rod.

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