WO2019109324A1

WO2019109324A1 - Suspension system testing apparatus

Info

Publication number: WO2019109324A1
Application number: PCT/CN2017/115157
Authority: WO
Inventors: 王云超; 郑东强
Original assignee: 集美大学
Priority date: 2017-12-08
Filing date: 2017-12-08
Publication date: 2019-06-13

Abstract

A suspension system testing apparatus comprises a base frame (1), a vehicle frame (5), an excitation device (4), and multiple sets of suspension cylinders (6). The excitation device (4) and the suspension cylinders (6) are all mounted on the base frame (1). The suspension system testing apparatus further comprises a stabilization support assembly (7) mounted on the base frame (1) and universally connected to the vehicle frame (5) via a first universal connector (721). The stabilization support assembly (7) further comprises an anti-twist stabilization rod (8) mounted on the vehicle frame (5) via a second universal connector (81). The anti-twist stabilization rod (8) is pivot-connected to the vehicle frame (1) and is a telescopic rod. A universal connection is provided at the join between a guide stabilization rod (72) of the stabilization support assembly (7) and the vehicle frame (5), and the guide stabilization rod (72) can move up and down along a guide sleeve/insertion hole of a stabilization support (71), thereby ensuring that the vehicle frame (5) moves up and down but does not move back and forth or left and right. In addition, the vehicle frame (5) can roll and pitch around a spherical hinge between the guide stabilization rod (72) and the vehicle frame (5).

Description

Suspension system test equipment

Technical field

The invention belongs to the technical field of vehicle detection devices, and in particular relates to a suspension system test device.

Background technique

The oil and gas suspension meets the requirements of various vehicles with superior nonlinear characteristics and vibration damping performance, and is therefore widely used in various heavy-duty off-road vehicles. The test equipment of the oil and gas suspension system is the basis for studying the characteristics of the oil and gas suspension system. At present, the test equipment of the oil and gas suspension system is only suitable for the test of the characteristics of a single suspension cylinder or double suspension cylinder suspension system, in the whole vehicle suspension system or multiple suspension cylinders (2 In the above-mentioned oil and gas suspension system, there may be different communication modes between the suspension cylinders, which leads to significant changes in the characteristics of the oil and gas suspension system, but the test functions for the vertical, pitch and roll characteristics of the suspension system of the multi-suspension cylinder There are still deficiencies. In view of the problem, the inventor of the present invention discloses an oil and gas suspension test device, including a chassis, a plurality of excitation devices, a single-bridge frame, a frame connecting rod, and the invention patent application disclosed in the publication No. CN105510059A. a lateral stabilizer bar, a mounting rod and an oil and gas suspension cylinder; a plurality of excitation devices are mounted on the chassis, and each of the two excitation devices constitutes a group of excitation shafts, and a plurality of groups of excitation shafts are arranged along the length direction of the chassis, each group is excited The two excitation devices in the vibration shaft are spaced apart along the width direction of the chassis; the rod end of each excitation device is hinged with an oil and gas suspension cylinder, and each group of excitation shafts corresponds to two oil and gas suspension cylinders, and each single bridge frame The upper ends of the oil and gas suspension cylinders corresponding to a pair of excitation shafts are respectively ball-jointly connected; the adjacent two single bridges are connected with a frame connecting rod; and one of the excitation shafts of each group of excitation shafts The rod is ball-joined to one end of a lateral stabilizer bar, and the other end of the stabilizer bar is ball-joined to the lower end of a mounting bar, and the upper end of the mounting bar is mounted in the middle of the corresponding single-bridge frame. However, in this type of oil and gas suspension test equipment, during the test of the roll, pitch and vertical characteristics of the suspension system, the stable bracket assembly used will cause some interference to the motion and force of the suspension system, and the frame The center of rotation moves with the deformation of the suspension cylinder, making it difficult to accurately determine its position, thereby affecting the analysis of the roll and pitch characteristics of the suspension cylinder.

In summary, the existing technology has problems: the existing oil and gas suspension test equipment, although the characteristics test method of the vehicle oil and gas suspension system is proposed, the roll, pitch and vertical characteristics of the suspension system are tested. During the process, the stable bracket assembly will cause some interference to the movement and force of the suspension system, and the center of rotation of the frame will move with the deformation of the suspension cylinder, and it is difficult to accurately determine its position, thereby causing the frame. The measurement and conversion of the roll angle is very difficult. In addition, the influence of the frame stabilizer bar on the force of the suspension cylinder is added, which causes the test equipment to inevitably interfere with the suspension system characteristic test, thereby affecting the roll and pitch of the suspension system. Test results of the characteristics. In view of the above problems, the invention eliminates the interference of the test equipment on the parameters such as the roll angle and the roll moment of the oil and gas suspension system, and the roll angle test is more convenient. Therefore, the invention perfectly solves the suspension system characteristics of the multi-suspension cylinder. The test problem, in order to study the vehicle characteristics of the multi-suspension cylinder oil and gas suspension system, especially the characteristics of the oil and gas suspension system with different connection modes between the suspension cylinders, provides an experimental solution to raise the research of the oil and gas suspension system to a new height. It also enables the design and research of the oil and gas suspension system to be closely combined with the steering performance and ride comfort of the whole vehicle.

Summary of the invention

In view of the problems existing in the prior art, the present invention provides a suspension system test apparatus. The invention creatively proposes a "centering anti-yaw" method, which solves the problems of difficulty in fixing the suspension cylinder, difficulty in coordinating movement and difficulty in multi-function testing of the oil and gas suspension system of the multi-suspension cylinder.

The present invention is achieved in that a suspension system test apparatus includes a chassis, a frame, an excitation device, and a plurality of sets of suspension cylinders; the excitation device and the suspension cylinder are all mounted on the chassis; and the suspension system is characterized in that the suspension system The testing device further includes a stabilizing bracket assembly, the stabilizing bracket assembly is mounted on the chassis, and is universally connected to the frame through the first universal joint;

The stabilizing bracket assembly further includes an anti-torsion stabilizer bar, the anti-torsion stabilizer bar is mounted on the frame through the second universal joint, the anti-torsion stabilizer bar is pivotally connected to the chassis, and the anti-torsion stabilizer bar is a length retractable Rod.

Further, the stabilizing bracket assembly includes a first mounting member and a second mounting member, the first mounting member The movable device is mounted on the second mounting member and movable in a linear direction relative to the second mounting member; the first mounting member is fixed to the chassis, and the second mounting member is mounted on the frame through the first universal joint connector.

Further, the first mounting member and the second mounting member are both disposed between the chassis and the frame, the second mounting member is a guiding stabilizer bar, and the first mounting member is a stable bracket.

Further, the bottom end of the stabilizing bracket is fixed on the bottom frame, and a jack is disposed at the top end; one end of the guiding stabilizing rod is mounted on the frame through the first universal joint, and the other end is inserted into the jack to form A cylindrical sliding pair.

Further, the anti-twist stabilizer bar is two, and the second universal joint connector is also two;

Two anti-torsion stabilizer bars are respectively disposed on two sides of the stabilizer bracket; one end of each anti-torsion stabilizer bar is pivotally connected to the stabilizer bracket, and the other end is mounted on the frame through the second universal joint connector.

Further, the first universal joint connector and the second universal joint connector are ball joint connectors;

The anti-torsion stabilizer bar comprises an inner shaft rod and an outer sleeve rod, wherein the inner shaft rod is inserted into the outer sleeve rod to realize the length-retractable setting of the anti-torsion stabilizer rod;

Each of the suspension cylinders is provided with a screw slide rail for each suspension cylinder; the two ends of the suspension cylinder are respectively connected to the screw slide rail and the frame through the third universal joint to adjust through the screw slide rail The angle between the axial direction of the suspension cylinder and the vertical direction is analyzed to analyze the characteristics of the suspension system under different conditions.

Further, the suspension system testing device further includes a fixing bracket; each excitation device is correspondingly mounted on a screw slide rail, and the rod end of each excitation device is universally connected with a suspension cylinder to make the suspension cylinder Mounted on the lead screw slide rail by the excitation device;

A fixed bracket is mounted on each of the remaining lead screw slide rails, and the top end of the fixed bracket is universally connected with a corresponding suspension cylinder.

Further, each of the two excitation devices constitutes a set of excitation shafts, and a plurality of sets of excitation shafts are arranged along the length direction of the chassis; two excitation devices in each group of excitation shafts are spaced apart along the width direction of the chassis, And located on both sides of the stable bracket assembly.

Further, the suspension system testing device further comprises a weight loading device, wherein the weight loading device can be fixed to different positions of the frame by a screw to simulate and test under different conditions such as vertical, pitch, and roll. Characteristics of oil and gas suspension cylinders.

The advantages and positive effects of the present invention are: by providing a universal joint at the joint stabilizing rod of the stabilizing bracket assembly and the frame connection, the guiding stabilizing rod can move up and down along the guide sleeve/jack of the stabilizing bracket, thereby ensuring the vehicle. The frame can move up and down, but it can not move back and forth and left and right; in addition, the frame can roll and pitch around the ball stabilizer of the guide stabilizer bar and the frame, thereby eliminating the roll or pitch process of the frame. The interference caused by the medium-stabilized bracket assembly and the center of rotation of the vehicle body are constantly changing, and it is difficult to determine such problems. It solves the problems of fixed difficulty, coordinated movement difficulty and multi-functional test of the multi-suspension cylinder oil and gas suspension system. It is a perfect solution for the multi-suspension cylinder oil and gas suspension system test.

DRAWINGS

1 is a front view of a suspension system testing device according to an embodiment of the present invention;

2 is a side view of a suspension system testing device according to an embodiment of the present invention;

In the figure: 1, the chassis; 2, the bar slide track; 3, the fixed bracket; 4, the excitation device; 5, the frame; 51, the weight loading device; 6, the suspension cylinder; 61, the third universal connection 7, stable bracket assembly; 71, stable bracket; 72, guiding stabilizer; 721, first universal joint; 8, anti-torsion stabilizer; 81, second universal joint; 82, inner shaft 83, coat rod.

Detailed ways

In order to make the objects, technical solutions and advantages of the present invention more comprehensible, the present invention will be further described in detail below with reference to the embodiments. It is understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The application principle of the present invention will be further described below with reference to FIG. 1, FIG. 2 and specific embodiments.

The suspension system testing device comprises a chassis 1, a frame 5, a stabilizing bracket assembly 7, an excitation device 4, and a plurality of sets of suspension cylinders 6. In this embodiment, the suspension cylinders 6 have six groups, and the excitation device 4 In order to stimulate the cylinder, there are two groups. The frame 5 is disposed above the chassis 1 . The stabilizer bracket assembly 7 , the excitation device 4 , and the plurality of suspension cylinders 6 are disposed between the frame 5 and the chassis 1 and are respectively connected to the frame 5 and Chassis 1, realized Installation of the frame 5.

Specifically, the chassis 1 is a rectangular frame formed by bolting a plurality of I-beams, which is placed on a horizontal floor for the fixed support of the entire experimental platform; the side of the chassis 1 near the frame 5 is Corresponding to each of the suspension cylinders 6, a screw slide rail 2 is provided: the screw slide rails 2 have 6 groups, which are divided into two columns, and the screw slide rails 2 of each column are parallel to each other, and the two screws are arranged. The slide rails 2 are uniformly mounted on the chassis 1 in a mirror image.

Two of the excitation devices 4 are mirrored to form a set of excitation shafts, and the two excitation devices 4 are mounted in half on the screw slide rails 2 on both sides of the stabilizing bracket assembly 7 and can be along the wires. The bar slide rail 2 moves; the top rod end of each of the excitation devices 4 is connected to a suspension cylinder 6 , and the suspension cylinder 6 is mounted on the screw slide rail 2 through the excitation device 4 . It can be moved and adjusted along the lead screw slide rail 2. Specifically, the two ends of the suspension cylinder 6 are respectively connected with a third universal joint 61, and are connected to the lead screw slide rail 2 and the frame 5 through a third universal joint 61 to pass the wire. The bar slide rail 2 adjusts the angle between the axial direction of the suspension cylinder 6 and the vertical direction, and then analyzes the characteristics of the suspension system in different states.

In order to achieve the leveling of the lower ends of all the suspension cylinders 6, all the remaining screw slide rails 2 of the excitation device 4, that is, the remaining four sets of the screw slide rails 2 are respectively mounted with the same length as the excitation device 4. The bracket 3 is fixed, and then the top end of each of the fixing brackets 3 has a suspension cylinder 6 corresponding to the universal joint.

It can be understood that, in this embodiment, there are two sets of excitation device shafts. In other embodiments, the group excitation shafts may also have multiple groups, which are arranged along the length of the chassis; each group is excited. The two excitation devices in the vibration shaft are spaced apart along the width direction of the chassis, and are disposed on both sides of the stable bracket assembly 7; similarly, the excitation device can be directly mounted on the chassis, and the same can be applied to The frame is activated.

1 and 2, the stabilizing bracket assembly 7 of this embodiment includes a cylindrical sliding pair mounted between the chassis 1 and the frame 5: specifically, the stabilizing bracket assembly 7 is included as the first The stabilizing bracket 71 of the mounting member, the guiding stabilizing rod 72 as the second mounting member, and the anti-torsion stabilizing rod 8 are respectively disposed on opposite sides of the stabilizing bracket 71.

The stabilizing bracket 71 and the guiding stabilizing rod 72 are both disposed between the chassis 1 and the frame 5, and respectively Mounted on the chassis 1 and the frame 5: the bottom end of the stabilizing bracket 71 is fixed to the chassis 1, the top end thereof protrudes toward the frame 5, and a through hole is formed in the top end; the guiding stabilizer 72 One end is mounted on the frame 5 through the first universal joint 721, and the other end extends toward the stabilizing bracket 71 and is inserted into the jack of the top end of the stabilizing bracket 71 to form a cylindrical sliding pair to stabilize the guiding rod. The relatively stable bracket 71 moves in the axial direction of the jack.

One end of the anti-torsion stabilizer bar 8 is pivotally mounted on the stabilizing bracket 71 to be connected to the chassis through the stabilizing bracket 71, and then the other end is universally mounted to the frame through the second universal joint 81 5 on. In order to achieve an optimized anti-twist effect, the anti-torsion stabilizer bar 8 is two, and the second universal joint connector 81 is also two; two anti-torsion stabilizer bars 8 are respectively disposed on two sides of the stabilizing bracket 71; One end of each of the anti-rotation stabilizer bars 8 is pivotally connected to the stabilizing bracket 71, and the other end is mounted on the frame via a second universal joint 81.

The anti-rotation stabilizer bar 8 is a length-retractable rod; the anti-rotation stabilizer bar 8 includes an inner shaft 82 and an outer sleeve 83. The inner shaft 82 is inserted into the outer sleeve 83 to achieve the anti-torsion stability. The length of the rod 8 is telescopically set.

In this embodiment, the first universal joint connector 721, the second universal joint connector 81, and the third universal joint connector 61 are both ball joint connectors; to achieve the tilt adjustment of the frame 5, the frame 5 is further provided with a weight loading device 51. The weight loading device 51 can be fixed to different positions of the frame 5 by screws to simulate and test the characteristics of the oil and gas suspension cylinder under different conditions such as vertical, pitch and roll.

The main advantages of this embodiment are:

In this embodiment, by providing a ball joint connector at the joint of the guide stabilizing rod 72 and the frame 5 of the stabilizing bracket assembly 7, the guide stabilizing rod 72 can be moved up and down along the through hole of the stabilizing bracket 71, thereby securing the frame. 5 can move up and down, but can not produce front and rear and left and right movement; in addition, the frame 5 can roll and pitch around the ball stabilizer connector of the guide stabilizer bar 72 and the frame 5, thereby eliminating the frame 5 During the roll or pitch process, the stability of the bracket assembly 7 and the center of rotation of the vehicle body are constantly changing, and it is difficult to determine and other problems.

In order to prevent the test bench from rotating around the guiding stabilizer bar 72, that is, the vertical axis of the frame, the stable bracket Also fixed on the assembly 7 is a set of anti-torsion stabilizer bars 8 which are used to limit the rotation of the frame 5 in the horizontal plane by the pivot hinges at the joint of the anti-rotation stabilizer bar 8 and the stabilizer bracket 71.

Compared with the prior period, the present invention installs the excitation hydraulic cylinder on the screw slide rail 2, and rotates the handle to drive the screw to rotate, thereby moving the excitation hydraulic cylinder to the left and right, thereby realizing the suspension cylinder 6. The tilt angle adjustment has the advantages of convenience and quickness.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. Within the scope.

Claims

A suspension system testing device, characterized in that the suspension system testing device comprises a chassis, a frame, an excitation device and a plurality of sets of suspension cylinders; the excitation device and the suspension cylinder are all mounted on the chassis; The suspension system testing device further includes a stabilizing bracket assembly, the stabilizing bracket assembly is mounted on the chassis, and is universally connected to the frame through the first universal joint connector;

The stabilizing bracket assembly further includes an anti-torsion stabilizer bar, the anti-torsion stabilizer bar is mounted on the frame through the second universal joint, the anti-torsion stabilizer bar is pivotally connected to the chassis, and the anti-torsion stabilizer bar is a length retractable Rod.
The suspension system testing device according to claim 1, wherein the stabilizing bracket assembly comprises a first mounting member and a second mounting member, the first mounting member being movably mounted on the second mounting member and capable of being opposite The second mounting member moves in a straight line direction; the first mounting member is fixed to the chassis, and the second mounting member is mounted on the frame through the first universal joint connector.
The suspension system testing device according to claim 2, wherein the first mounting member and the second mounting member are both disposed between the chassis and the frame, and the second mounting member is a guiding stabilizer bar. A mounting member is a stabilizing bracket.
The suspension system testing device according to claim 1, wherein the bottom end of the stabilizing bracket is fixed to the chassis, and the top end is provided with a jack; and one end of the guiding stabilizing rod is mounted on the first universal joint connector. The other end of the frame is inserted into the jack to form a cylindrical sliding pair.
The suspension system testing device according to claim 1, wherein the anti-twist stabilizer bar is two, and the second universal joint connector is also two;

Two anti-torsion stabilizer bars are respectively disposed on two sides of the stabilizer bracket; one end of each anti-torsion stabilizer bar is pivotally connected to the stabilizer bracket, and the other end is mounted on the frame through the second universal joint connector.
The suspension system testing device according to claim 1, wherein the first universal joint connector and the second universal joint connector are ball joint connectors;

The anti-torsion stabilizer bar comprises an inner shaft rod and an outer sleeve rod, wherein the inner shaft rod is inserted into the outer sleeve rod to realize the length-retractable setting of the anti-torsion stabilizer rod;

Each of the suspension cylinders is provided with a screw slide rail on the chassis; the two ends of the suspension cylinder respectively pass through The 30,000-way connector is connected to the lead screw slide rail and the frame to adjust the angle between the axial direction of the suspension cylinder and the vertical direction through the screw slide rail, thereby analyzing the characteristics of the suspension system under different states.
The suspension system testing device according to claim 1, wherein the suspension system testing device further comprises a fixing bracket; each excitation device is correspondingly mounted on a screw slide rail, and each excitation device The rod end is universally connected with a suspension cylinder so that the suspension cylinder is mounted on the lead screw slide rail by the excitation device;

A fixed bracket is mounted on each of the remaining lead screw slide rails, and the top end of the fixed bracket is universally connected with a corresponding suspension cylinder.
A suspension system testing device according to claim 1, wherein each of said excitation devices constitutes a set of excitation axes, and a plurality of sets of excitation axes are arranged along the length of the chassis; each set of excitation axes The two excitation devices are spaced apart along the width of the chassis and are disposed on both sides of the stable bracket assembly.
The suspension system testing device according to claim 1, wherein the suspension system testing device further comprises a weight loading device, wherein the weight loading device can be fixed to different positions of the frame by a screw to simulate and test Characteristics of oil and gas suspension cylinders under different conditions such as vertical, pitch and roll.