CN110108433A - Damper impact test machine host - Google Patents

Abstract

The invention discloses a shock absorber impact testing machine main body, which comprises a frame, a lifting and releasing unit, an impact weight unit and a secondary impact preventing unit, the lifting and releasing unit is arranged above the frame, and the impact weight unit is arranged on the Below the lifting release unit, the lifting release unit is used to lift or release the impact weight unit, the frame below the impact weight unit is provided with an anti-secondary impact platform, and the anti-secondary impact unit is fixed on the anti-secondary impact unit. On the secondary impact platform, the lower part of the frame is provided with an impact fixture for fixing the shock absorber, and the impact fixture includes a vertical impact fixture and a horizontal impact fixture, and the impact fixture cooperates with the lifting release unit and the impact weight unit. Shock absorber impact test. The shock absorber shock testing machine main engine of the present invention can not only carry out the shock test in the vertical direction of the shock absorber assembly, but also can carry out the horizontal shock test of the ear ring weld of the shock absorber, and can carry out vertical and horizontal shocks.

Description

Shock absorber impact testing machine host

technical field

The invention is a main engine of a shock absorber impact testing machine, which belongs to the technical field of shock absorber impact testing machines.

Background technique

The shock absorber is used to suppress the shock when the spring rebounds after absorbing the shock and the impact from the road. It is widely used in automobiles to accelerate the attenuation of frame and body vibrations and improve the ride comfort of automobiles. When passing through uneven roads, although the shock-absorbing spring can filter the vibration of the road surface, the spring itself will reciprocate, and the shock absorber is used to suppress this spring jumping. In the suspension system, the vibration is generated due to the impact of the elastic element. In order to improve the ride comfort of the car, a shock absorber is installed in parallel with the elastic element in the suspension. In order to attenuate the vibration, the shock absorber used in the car suspension system is mostly a hydraulic shock absorber. ) and the vehicle axle vibrate and there is relative movement, the piston in the shock absorber moves up and down, and the oil in the shock absorber cavity repeatedly flows from one cavity through different pores into another cavity. At this time, the friction between the hole wall and the oil and the internal friction between the oil molecules form a damping force on the vibration, so that the vibration energy of the car is converted into heat energy of the oil, which is then absorbed by the shock absorber and released into the atmosphere. When the oil passage section and other factors are constant, the damping force increases or decreases with the relative motion speed between the frame and the axle (or wheel), and is related to the viscosity of the oil. The shock absorber impact testing machine is used to detect the damping force. The impact resistance performance of the vibrator piston rod welding lug, the oil storage cylinder welding lug and the shock absorber assembly under the action of a certain impact energy and impact speed.

The existing shock absorber impact testing machine can be used in conjunction with the shock absorber for impact testing. However, in actual use, the impact mode is relatively single during use, and the safety is poor, and it is not convenient for protection. These are problems that actually exist and need to be solved urgently.

Contents of the invention

Aiming at the deficiencies in the prior art, a shock absorber impact testing machine host with increased impact diversity and safe use is provided.

Concrete technical scheme of the present invention is as follows:

A shock absorber impact testing machine host, comprising a frame, a lifting release unit, an impact weight unit, and a secondary impact prevention unit, the lifting release unit is arranged above the frame, and the impact weight unit is arranged below the lifting release unit , the lifting release unit is used to lift or release the impact weight unit, the anti-secondary impact platform is provided on the frame below the impact weight unit, and the anti-secondary impact unit is fixed on the anti-secondary impact platform , the lower part of the frame is provided with an impact fixture for fixing the shock absorber, the impact fixture includes a vertical impact fixture and a horizontal impact fixture, and the impact fixture cooperates with the lifting release unit and the impact weight unit to perform shock absorber impact test.

Further, the lifting and releasing unit includes a lifting part, a lifting beam and a gripping part, and the lifting part includes a toothed belt, a servo motor and a ball screw, and the output end of the servo motor passes through the toothed belt and the upper end of the ball screw. Transmission connection, the lower end of the ball screw is connected with the lifting beam, the servo motor drives the ball screw to rotate through the toothed belt, and drives the lifting beam to move up and down; the gripping part is set on the lifting beam, and the gripping part includes clamping A cylinder and a lifting claw, the output end of the clamping cylinder is connected with the lifting claw; the lifting claw is used to clamp the impact weight unit.

Further, the lifting beam is also provided with a stop cylinder and a stop pin, and the stop cylinder and the stop pin are located below the gripping part, and the output end of the stop cylinder is connected to the stop pin.

Further, the impact weight unit includes a base, a weight, an impact head, a sensor and a linear bearing, the weight is set above the base, the impact head is set below the base, and the impact head is set There are sensors, the linear bearings are arranged at the left and right ends of the base, and the linear bearings are slidably connected with the front column.

Further, the anti-secondary impact unit includes a cylinder, a push-pull rod, a push-pull seat, a buffer seat and a buffer, the buffer is arranged on the buffer seat, the push-pull seat is fixedly connected to the buffer seat, one end of the push-pull rod is connected to The output end of the cylinder is connected, and the other end of the push-pull rod is connected with the push-pull seat. Under the action of the cylinder, the push-pull rod pushes the buffer seat to move linearly.

Further, the buffer seats are arranged in two groups, located on the left and right sides of the push-pull seat respectively, and a linear guide rail is provided under the buffer seat, and the buffer seat is slidably connected to the linear guide rail.

Further, the horizontal impact fixture includes a cylinder, a rotating shaft, a bearing seat, a first clamping piece and a first transition sleeve, the rotating shaft is arranged on the bearing seat, and the output end of the cylinder is connected to the rotating shaft, so Both the clamping piece and the transition sleeve are connected with the rotating shaft.

Further, the vertical impact fixture includes a flange seat, a strut, an impact seat, an adjustment sleeve, a transition sleeve and a clamping piece, the strut is arranged in the vertical direction of the flange seat, the adjustment sleeve, the second The second transition sleeve and the second clamping piece are arranged on the impact seat, the impact seat is set above the flange seat, the top of the pole is connected with the adjustment sleeve, the transition sleeve is set in the clamping piece, and the clamping piece is set on the Adjust the top of the sleeve.

Further, an upper protective fence is provided on the outside of the lifting release unit, the impact weight unit and the anti-secondary impact unit, and a lower protective fence is provided on the outer side of the frame, and the lower protective fence is fixedly connected to the upper protective fence.

Further, the inner side of the frame is provided with a clamp placement area and a weight placement area.

The shock absorber impact testing machine host of the present invention has the beneficial effects as follows:

1: The host of the shock absorber impact testing machine has functions such as anti-secondary impact, which is safe, convenient and easy to operate.

2: The host of the shock absorber impact testing machine can carry out both vertical impact test and horizontal impact test by setting vertical impact jig and horizontal impact jig inside the frame, which increases the diversity of impact.

Description of drawings

Fig. 1 is the internal schematic diagram of the shock absorber impact testing machine main engine of the present invention;

Fig. 2 is a structural schematic diagram of the host machine of the shock absorber impact testing machine of the present invention;

Fig. 3 is the side structure schematic diagram above the frame of the present invention;

Fig. 4 is a structural schematic diagram of the lifting and releasing unit of the present invention;

Fig. 5 is a structural schematic diagram of the impact weight unit of the present invention;

Fig. 6 is a structural schematic diagram of the anti-secondary impact unit of the present invention;

Fig. 7 is a schematic side view of the anti-secondary impact unit of the present invention;

Fig. 8 is a schematic structural view of the horizontal impact fixture of the present invention;

Fig. 9 is a schematic structural view of the vertical impact jig of the present invention.

In the figure: 1-upper protective fence, 2-lower protective fence, 3-lifting release unit, 4-impact weight unit, 5-anti-secondary impact unit, 6-fixture placement area, 7-weight placement area, 8 -Anti-secondary impact platform, 8a-frame, 9-vertical impact fixture, 10-horizontal impact fixture, 11-servo motor, 12-upper limit switch frame, 13-lifting beam, 14-rear column, 15-ball wire Bar, 16-clamp cylinder, 17-lift gripper, 18-stop cylinder, 19-stop pin, 20-linear bearing, 21-sensor, 22-impact head, 23-base, 24-weight, 25 -Linear guide rail, 26-buffer seat, 27-buffer, 28-push-pull seat, 29-push-pull rod, 30-cylinder seat, 31-cylinder, 32-test piece, 33-first transition sleeve, 34-first clip Holder, 35-rotary shaft, 36-bearing seat, 37-cylinder, 38-second transition sleeve, 39-second clamping piece, 40-adjustment sleeve, 41-impact seat, 42-strut, 43- Flange seat.

Detailed ways

The present invention will be further described below in combination with specific embodiments, and the parts not mentioned in the present invention are all prior art.

Please refer to Fig. 1 to Fig. 2, the present invention provides shock absorber impact testing machine host, including frame 8a, lifting release unit 3, impact weight unit 4 and anti-secondary impact unit 5, described lifting release unit 3 is arranged on Above the frame 8a, the impact weight unit 4 is arranged below the lifting and releasing unit 3, and the lifting and releasing unit 3 is used to lift or release the impact weight unit 4, and the frame 8a below the impact weight unit 4 is provided with an anti-secondary The secondary impact platform 8, the anti-secondary impact unit 5 is fixed on the anti-secondary impact platform 8, the bottom of the frame 8a is provided with an impact fixture for fixing the shock absorber, and the impact fixture is formed by vertical impact The jig 9 and the horizontal impact jig 10 are composed to facilitate multi-angle impact. The shock fixture is used in conjunction with the lift release unit and the shock weight unit for shock absorber shock testing. The shock absorber impact testing machine main engine according to the present invention, firstly, an upper protective fence 1 is provided on the outside of the lifting release unit 3, the impact weight unit 4 and the anti-secondary impact unit 5, and secondly, a lower protective fence is provided on the outside of the frame 8a. The column 2, the lower protective fence 2 is fixedly connected with the upper protective fence 1; the stability and impact resistance are increased, and the use safety is improved at the same time. The inner side of the frame is provided with a fixture placement area 6 and a weight placement area 7, the setting of the fixture placement area 6 is convenient for the placement of the fixture, and the setting of the weight placement area 7 is convenient for the placement of weights.

Referring to Figures 1 to 4, the lifting and releasing unit includes a lifting part, a lifting beam 13 and a gripping part, and the lifting part includes a toothed belt 10, a servo motor 11 and a ball screw 15, and the output end of the servo motor 11 passes through The toothed belt 10 is connected to the upper end of the ball screw 15, and the lower end of the ball screw 15 is connected to the lifting beam 13. The servo motor 11 drives the ball screw 15 to rotate through the toothed belt 10, driving the lifting beam 13 to move up and down; The clamping part is arranged on the lifting beam 13, and the clamping part includes a clamping cylinder 16 and a lifting claw 17, and the output end of the clamping cylinder 16 is connected with the lifting claw 17; the clamping cylinder 16 is a regular Closed air cylinder, lifting claw 17 is used to clamp the impact weight unit. The side of the ball screw 15 is provided with an upper limit switch frame 12 . The lifting beam 13 is also provided with a stop cylinder 18 and a stop pin 19, the stop cylinder 18 and the stop pin 19 are located below the clamping part, and the output end of the stop cylinder is connected with the stop pin. By setting a stop pin, the pin is dragged by the stop cylinder. When the gripper is clamped in place, the stop pin stretches out. At this time, the gripper part can move up, which can prevent the weight from falling accidentally during the ascent process. When the weight falls, the stop pin retracts before release, further increasing safety.

The lifting and releasing unit described in the present invention first sets the toothed belt to cooperate with the ball screw, which is convenient for lifting and operation. Secondly, for the sake of equipment safety, the action of clamping the cylinder is designed to be normally closed, that is, only when the power is on The release action can only be performed in the state to prevent the weight from falling when the power is suddenly cut off. In addition, there is also a safety protection link in this part. This link is a stop pin, which is driven by a cylinder. When the lifting claw 5 is clamped in place, the stop pin 7 stretches out. At this time, the grip part The lifting movement can only be performed, which prevents the weight from accidentally falling during the rising process, and the weight is retracted before the stop pin is released.

Referring to Fig. 5, described impact weight unit comprises base 23, weight 24, impact head 22, sensor 21 and linear bearing 20, and described weight 24 is arranged on the top of base 23, and described impact head 22 is arranged on Below the base 23 , the impact head 22 is provided with a sensor 21 , and the linear bearings 20 are provided at the left and right ends of the base 23 .

6 and 7, the anti-secondary impact unit includes a cylinder 31, a push-pull rod 29, a push-pull seat 28, a buffer seat 26 and a buffer 27, the cylinder 31 is fixed on the cylinder seat 30, and the buffer 27 is located on the buffer seat 26, the push-pull seat 28 is fixedly connected with the buffer seat 26, one end of the push-pull rod 29 is connected with the output end of the cylinder 31, the other end of the push-pull rod 29 is connected with the push-pull seat 28, and under the action of the cylinder, the push-pull rod pushes the buffer The seat moves in a straight line. Buffer seats are arranged in double groups, respectively positioned at the left and right sides of push-pull seat 28 , and the bottom of described buffer seat 26 is provided with linear guide rail 25 , and buffer seat 26 is slidably connected on the linear guide rail 25 .

The anti-secondary impact unit of the present invention, firstly, a linear guide rail is provided under the two groups of buffer seats, which is convenient for carrying on the weight, and the material of the hard rubber also ensures the buffer force, and secondly, when the impact weight rebounds, the height After exceeding the allowable height (with switch detection), the cylinder pushes the buffer seat to move forward quickly on the linear guide rail, catches the weight that falls after rebounding, so that it will not act on the test piece again, ensuring safety.

Referring to Fig. 8, the horizontal impact fixture includes a cylinder 37, a rotating shaft 35, a bearing seat 36, a first clamping member 34 and a first transition sleeve 33, the rotating shaft 35 is arranged on the bearing seat 36, and the cylinder 37 The output end of the output end is connected with the rotating shaft 35, and the first clamping member 34 and the first transition sleeve 33 are both connected with the rotating shaft 35. For the test piece 32 with horizontal impact, the first transition sleeve 33 should be selected according to the outer diameter of the liquid storage cylinder or piston rod, and the impact part of the shock absorber should be adjusted visually. The test piece 32 is fixed on the rotating shaft 35, and the installation operation of the test piece 32 is completed.

Referring to Fig. 9, the vertical impact fixture includes a flange seat 43, a strut 42, an impact seat 41, an adjustment sleeve 40, a second transition sleeve 38 and a second clamping piece 39, and the strut 42 is arranged on the flange In the vertical direction of the seat 43, the adjustment sleeve 40, the second transition sleeve 38 and the second clamping member 39 are arranged on the impact seat 41, and the impact seat 41 is arranged on the top of the flange seat 43, and the top of the pole 42 is in contact with the flange seat 43. The adjustment sleeve 40 is connected, the second transition sleeve 38 is arranged in the second clamping piece 39 , and the second clamping piece 39 is arranged above the adjustment sleeve 40 . For the vertical impact test piece 32, the second transition sleeve 38 should be selected according to the outer diameter of the liquid storage cylinder, the strut 42 should be selected according to the working length (impact length) of the shock absorber, and the strut 42 should be fixed to the flange seat 43 , screw on the adjustment sleeve 40 and the impact seat 41, put the test piece on the impact seat 41, adjust the adjustment sleeve 40 according to the height requirement, and use the second clamping piece 39 and the second transition sleeve 38 to place the test piece 32 Fix it on the impact seat 41 to complete the installation operation of the test piece.

The invention can not only carry out the impact test in the vertical direction of the shock absorber assembly, but also can carry out the horizontal impact test of the ear ring weld of the shock absorber. For vertical and horizontal impact, the stability is increased by setting the frame-type rack, the structure is simple, and it is easy to realize.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. A shock absorber impact testing machine host, characterized in that it comprises a frame, a lifting release unit, an impact weight unit and an anti-secondary impact unit, the lifting release unit is arranged above the frame, and the impact weight unit It is arranged under the lifting release unit, which is used to lift or release the impact weight unit, and the anti-secondary impact platform is arranged on the frame below the impact weight unit, and the anti-secondary impact unit is fixed on the On the anti-secondary impact platform, the lower part of the frame is provided with an impact fixture for fixing the shock absorber, the impact fixture includes a vertical impact fixture and a horizontal impact fixture, and the impact fixture is connected with the lifting release unit and the impact weight unit Cooperate with shock absorber impact test. 2. The main engine of the shock absorber impact testing machine according to claim 1, wherein the lifting and releasing unit includes a lifting part, a lifting beam and a gripping part, and the lifting part includes a toothed belt, a servo motor and a ball bearing Screw, the output end of the servo motor is connected to the upper end of the ball screw through a toothed belt, and the lower end of the ball screw is connected to the lifting beam. The servo motor drives the ball screw to rotate through the toothed belt, driving the lifting beam to move up and down The clamping part is arranged on the lifting beam, and the clamping part includes a clamping cylinder and a lifting claw, and the output end of the clamping cylinder is connected with the lifting claw; the lifting claw is used to clamp the impact weight unit. 3. The main engine of the shock absorber impact testing machine according to claim 2, wherein the lifting beam is also provided with a stop cylinder and a stop pin, and the stop cylinder and the stop pin are located below the gripping part, so that The output end of the stop cylinder is connected with the stop pin. 4. The shock absorber impact testing machine host according to any one of claims 1 to 3, wherein the impact weight unit comprises a base, a weight, an impact head, a sensor and a linear bearing, and the weight The code is arranged above the base, the impact head is arranged below the base, sensors are arranged on the impact head, the linear bearings are arranged at the left and right ends of the base, and the linear bearings are slidably connected with the front column. 5. The shock absorber impact testing machine host according to claim 4, wherein the anti-secondary impact unit includes a cylinder, a push-pull rod, a push-pull seat, a buffer seat and a buffer, and the buffer is arranged at the buffer On the seat, the push-pull seat is fixedly connected with the buffer seat, one end of the push-pull rod is connected with the output end of the cylinder, and the other end of the push-pull rod is connected with the push-pull seat, and under the action of the cylinder, the push-pull rod pushes the buffer seat for linear motion. 6. The main engine of the shock absorber impact testing machine according to claim 5, characterized in that, the buffer seats are arranged in double groups, respectively located on the left and right sides of the push-pull seat, and a linear guide rail is provided under the buffer seat, The buffer seat is slidingly connected on the linear guide rail. 7. The shock absorber impact testing machine host according to claim 1, wherein the horizontal impact fixture comprises a cylinder, a rotating shaft, a bearing seat, a first clamping piece and a first transition sleeve, and the rotating shaft Located on the bearing seat, the output end of the cylinder is connected to the rotating shaft, and both the clamping piece and the transition sleeve are connected to the rotating shaft. 8. The shock absorber impact testing machine host according to claim 7, wherein the vertical impact fixture comprises a flange seat, a pole, an impact seat, an adjustment sleeve, a transition sleeve and a clamping piece, the The pole is arranged in the vertical direction of the flange seat, the adjustment sleeve, the second transition sleeve and the second clamping piece are arranged on the impact seat, the impact seat is arranged above the flange seat, the top of the pole and the adjustment sleeve connected, the transition sleeve is set in the clamping piece, and the clamping piece is set above the adjustment sleeve. 9. The shock absorber impact testing machine host according to claim 1, wherein an upper protective fence is provided on the outside of the lifting release unit, the impact weight unit and the anti-secondary impact unit, and an upper protective fence is provided on the outside of the frame. A lower protective fence is arranged, and the lower protective fence is fixedly connected with the upper protective fence. 10. The shock absorber impact testing machine host according to claim 1, characterized in that, the inner side of the frame is provided with a fixture placement area and a weight placement area.