CN208206359U - A kind of oversize vehicle chassis dynamometer - Google Patents

A kind of oversize vehicle chassis dynamometer Download PDF

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Publication number
CN208206359U
CN208206359U CN201820525736.4U CN201820525736U CN208206359U CN 208206359 U CN208206359 U CN 208206359U CN 201820525736 U CN201820525736 U CN 201820525736U CN 208206359 U CN208206359 U CN 208206359U
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China
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roller
cylinder
axis
plate
bearing
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CN201820525736.4U
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Chinese (zh)
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刘东方
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Shanghai angqin measurement and Control Technology Co., Ltd
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Shanghai Ang Qin Observing And Controlling Science And Technology Ltd
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Abstract

The utility model discloses a kind of oversize vehicle chassis dynamometers, comprising: the middle position of pedestal, the upper bracket set on pedestal upper end, pedestal is equipped with piggyback pod, and dual-axle motor is located in piggyback pod;The power output shaft at twin shaft both ends is connected with roller, and bearing is arranged on the power output shaft, and bearing is equipped with bearing (ball) cover;The two sides of roller are equipped with a pair of of first brake device;Bearing (ball) cover is equipped with secondary braking device;In brake, positioned at roller two sides first brake device from two sides by roller locking, the second end of secondary braking device is close to the internal circular surfaces of roller;Centering lifting device, centering lifting device are arranged on upper bracket.The phenomenon that the utility model is by redesigning the position of dual-axle motor and improving to brake gear, reduce the volume of the pedestal of chassis dynamometer, guarantee the consistency of roller rotation and can be avoided not dead roller brake or shake.

Description

A kind of oversize vehicle chassis dynamometer
Technical field
The utility model relates to chassis dynamometer technical field more particularly to a kind of oversize vehicle chassis dynamometers.
Background technique
As automobile gradually becomes household requisites, consumer also gradually proposes the concern of automotive performance, vehicle safety It rises.Each car manufacturer is also in the continuous detection method and detection system for promoting abundant automobile, in the hope of reaching national legislation Requirement.
Chassis dynamometer is a kind of room for testing the performances such as vehicle dynamic quality, multi-state discharge index, fuel oil index Interior bench test equipment.Road simulation dynamometer calculates road analogy equation, and use loading device by roller simulated roadway It is simulated, realizes the simulation to each operating condition of automobile.
Many car manufacturers replace actual actual road test, bottom in the prior art using vehicle performance testing stand For driving the motor of roller to be normally at the side on chassis, when needing to detect oversize vehicle, first aspect in disk dynamometer machine Cause chassis dynamometer pedestal bulky.Second aspect due to roller is driven by the motor of side, it is difficult to be guaranteed The consistency of the rollers roll on both sides, roller is unstable when detecting vehicle, reduces the accuracy of detection.And existing bottom When the brake gear of disk dynamometer machine needs brake to deactivate the larger quality in oversize vehicle detection, large volume of roller, Jin Jinyi The frictional force that symmetrically arranged brake gear provides by two sides can generate the phenomenon that braking not dead or shake, influence to detect.
Therefore, a kind of novel oversize vehicle chassis dynamometer is provided to solve the above-mentioned problems.
Summary of the invention
The purpose of the utility model is to provide a kind of oversize vehicle chassis dynamometers, reduce the pedestal of chassis dynamometer Volume, the phenomenon that guaranteeing the consistency of roller rotation and can be avoided not dead roller brake or shake.
The technical scheme that the utility model is provided is as follows:
A kind of oversize vehicle chassis dynamometer, comprising: pedestal comprising bottom frame;It is set to four corners of the bottom frame The apex angle support column at place;For accommodating the piggyback pod of motor, the piggyback pod is set to the middle position of the bottom frame;Wherein, A motor holding tank is provided on the piggyback pod, the opening direction of the motor holding tank is backwards to the bottom frame, the power The opposite both ends in cabin are respectively provided with one for placing the bearing holding tank of bearing, the power on the axis direction of the bearing The both ends of the surface in cabin and the apex angle support column of corresponding side form the chamber for accommodating roller;The top of the bearing holding tank detachably connects Joint bearing end cap;Dual-axle motor, the dual-axle motor are arranged in the motor holding tank;Upper bracket, the upper bracket setting In the upper end of the pedestal;Roller, the power output axis connection of the roller and the motor, and it is located at the two of the piggyback pod The apex angle support column of end face and corresponding side forms the chamber for accommodating roller;Be set to the roller two sides first brake device and The first end of secondary braking device, the secondary braking device is fixedly connected on the bearing (ball) cover of motor, second end with it is described The internal circular surfaces of roller have pre-determined distance;In brake, the first brake device positioned at the roller two sides will be rolled from two sides Cylinder locking, the second end of the secondary braking device are close to the internal circular surfaces of roller;Centering lifting device, the centering, which rises, lifts dress It installs on the upper bracket.
In above structure, the middle position setting piggyback pod on bottom frame places the motor of driving roller, and roller is set The two sides of motor are placed in, measuring motor compared with the existing technology reduces the overall volume of pedestal.And roller is directly connected in On two output shafts of motor, the roller of two sides can guarantee the consistency of rotation, avoid due to velocity of rotation between roller Wheel caused by deviation jolts or misplaces, to improve the accuracy of detection.By the way that a secondary braking device is arranged more, with The first brake device that roller two sides are arranged in forms bikini brake, when braking to the roller for oversize vehicle, It is capable of providing stable brake force, avoids shaking in brake process, can be realized the brake of the roller for oversize vehicle It vehicle and is not easily susceptible to the effect of external force and rotates, guarantee the safety of test vehicle.
Preferably, the centering lifting device includes: the driving device being set on upper bracket;It is set to the upper bracket On two pairs of collateral plates being parallel to each other, the roller be located at mutually copes between the collateral plate, the both ends of the collateral plate are equal Equipped with a guide groove, the guide groove is located at the top of roller;Centering elevation mechanism, the centering elevation mechanism is along described The both ends of every block of collateral plate are arranged in the extending direction of collateral plate;Retarder, the power input shaft of the retarder and institute The power output axis connection for stating driving device, the two centering elevation mechanisms ipsilateral positioned at the same collateral plate pass through silk The power output axis connection of thick stick and the retarder;Arc lift plate, the arc lift plate are respectively arranged at the axis of roller Top two sides and arc lift plate are equipped with conllinear guiding axis along the two sides on the axis direction of roller, the guiding axis from It is rotatablely connected by holding across the guide groove and the centering elevation mechanism, the corresponding diameter of a circle of the arc lift plate is greater than The diameter of the roller;The centering elevation mechanism includes a liter act pedestal, is rotatably provided in pushing away for the liter act pedestal upper end Arm and sliding sleeve are lifted, the first end of the pushing & lifting arms and the free end of guiding axis are rotatablely connected, the second end of the pushing & lifting arms It is rotatablely connected with the upper end for rising act pedestal;The liter, which is lifted, is provided with a upper through-hole on pedestal, the liter lifts pedestal and passes through institute State that through-hole is set on the lead screw and the axis of the upper through-hole is parallel with the axis of the lead screw;In the sliding sleeve Side is equipped with internal screw thread, and the internal screw thread of the sliding sleeve is engaged with the external screw thread of the lead screw, and the upper through-hole passes through sliding sleeve Cylinder is slidably connected with lead screw;The lower section of the lead screw is equipped with slide bar, and the axis of the slide bar and the axis of lead screw are parallel;The liter It lifts pedestal and is equipped with lower through-hole, the lower through-hole is located at the lower section of upper through-hole and the axis of the axis of lower through-hole and upper through-hole is flat Row, the slide bar pass through on the lower through-hole.
In above structure, by adding slide bar below lead screw, and the lower through-hole on pedestal is lifted by liter and is set in slide bar On, a part of pressure on pedestal can be lifted by liter be transmitted on slide bar, rather than be all transmitted on lead screw, to reduce The pressure of the receiving of lead screw avoids lead screw from being pressed down since pressure-bearing is excessive, extends the service life of lead screw.And above structure Used in lift plate be arc lift plate, compared to the prior art used in straight panel, arc lift plate is in pressure-bearing, the arm of force It is small compared to the arm of force of straight panel, so the torque that arc lift plate is subject to is smaller, more it is not easy to be pressed down.
Preferably, the guide groove is arc guide groove, and the arc guide groove is corresponding to the geomery of roller.
Preferably, arc limit slot is symmetrically arranged on the opposite face of the collateral plate of the two sides of the corresponding same roller; The arc lift plate is additionally provided with conllinear limit shaft along the two sides on the axis direction of roller, the axis of the limit shaft with The axis of guiding axis is parallel, and the free end of the limit shaft is protruded into the arc limit slot and along the arc limit slot Long axis direction moves reciprocatingly.
In above structure, stretched by the way that arc limit slot is arranged on collateral plate, and by the limit shaft of arc lift plate two sides Enter in arc limit slot, can be remained arc lift plate with roller by limit shaft in arc lift plate and guiding axis Separation, when guiding axis being avoided to move up in guide groove, the lower end of arc lift plate can be fitted in the outer surface of cylinder of rolling On, to cause the abrasion of arc lift plate and roller.
Preferably, the upper end of the arc lift plate is rotatablely connected a support roller, the outer surface of the support roller With tire interface.
In above structure, by being equipped with a back-up roller that can be rolled in the upper end of arc lift plate and tire interface Cylinder, can be avoided tire in the detection process, and the upper end of outer surface of tire and arc lift plate rubs, to cause tire and arc The abrasion of the upper end of shape lift plate.
Preferably, the bearing holding tank at motor holding tank be equipped with semi-circular baffle, the semi-circular baffle with The piggyback pod is integrally formed.
In above structure, by the way that a semi-circular baffle is arranged, the bearing in bearing holding tank can be avoided in work It is deviated during work into motor holding tank, influences the stability of bearing rotation.
Preferably, the bottom frame is square framework;The bottom frame is at least arranged one along the axis direction of the bearing To middle support column.
In above structure, due to place vehicle, especially oversize vehicle on chassis dynamometer, heavier mass be will lead to Stress is larger in the vertical direction for pedestal, can increase the resistance to compression energy of pedestal entirety by adding middle support column on bottom frame Power enables pedestal to support the detection of oversize vehicle.
Preferably, the first brake device includes: the first gas-pressure mandril, connecting rod and the first friction plate;Described first Gas-pressure mandril includes the first cylinder and the first push rod;The first end of first cylinder and the upper bracket are hinged, and described first The second end of cylinder and the first push rod cooperate, and first push rod is reciprocating along the axis direction of first cylinder; The first end of first push rod one end and connecting rod far from the first cylinder is hinged;The body of rod and pedestal of the connecting rod are cut with scissors It connects, the connecting rod is equipped with the first friction plate close to one end of the roller, and when braking, first push rod is from the first cylinder Interior stretching, first friction plate are attached to the outer round surface of the roller.
In above structure, by the way that first brake device is hinged with upper bracket and measurement of power machine base respectively, facilitate installation, and When first brake device is damaged, maintenance personal can easily be carried out first brake device from the side of measurement of power machine base Maintenance.
Preferably, the secondary braking device includes the second gas-pressure mandril and arcuate friction piece;Second gas-pressure mandril Including the second cylinder and the second push rod;The first end of second cylinder is fixedly connected with the bearing (ball) cover, second gas The second end of cylinder and the second push rod cooperate, and second push rod is reciprocating along the axis direction of second cylinder;Institute The one end of the second push rod far from the second cylinder is stated to be fixedly connected with the arcuate friction piece;The arcuate friction piece is close to the rolling The end face of cylinder internal circular surfaces is arcwall face, and the internal circular surfaces of the arcwall face and the roller match.
In above structure, by setting arcuate friction piece, and arcwall face and roller for the friction plate of secondary braking device Internal circular surfaces it is consistent, brake when, arcuate friction piece can be bonded completely with the internal circular surfaces of roller, be increased to the full extent Contact area, to increase brake force.
Preferably, the secondary braking device is fixedly connected by cylinder block with the bearing (ball) cover;Second brake The free end of second push rod of device is fixedly connected by cylinder top with the arcuate friction piece;Wherein, the cylinder block packet The fixed frame for including the bottom plate affixed with bearing (ball) cover, being set on end face of the bottom plate far from the bearing (ball) cover, it is described solid Determine frame and is equipped with top through-hole close to one end of the internal circular surfaces of the roller;The first of second cylinder of the secondary braking device End is fixed on end face of the bottom plate far from the bearing (ball) cover;The cylinder top includes that cylinder push-rod and friction plate are fixed Plate, the first end of the cylinder push-rod are fixedly connected with one end far from second cylinder of second push rod, the gas The second end of cylinder push rod is fixedly connected with friction plate fixed plate, and the cylinder push-rod passes through the top through-hole, and described second pushes away Bar drives cylinder top to move reciprocatingly along the axis direction of second cylinder;The separate cylinder of the friction plate fixed plate The other end of push rod is equipped with arcuate friction piece.
In above structure, by the way that arcuate friction piece to be connect by cylinder top with the second push rod, wherein in cylinder top Equipped with the friction plate fixed plate for installing arcuate friction piece, contact area is increased, so that the second push rod rubs with arc The connection of pad is stronger.And since the second cylinder is fixed in setting cylinder block, the second cylinder can be realized more preferable Fixation, and when secondary braking device is braked, arcuate friction piece will receive the power in tangential direction, and since cylinder pushes away Bar is located in the top through-hole of fixed frame, and the side wall for coming directly towards through-hole can provide cylinder push-rod one and the power in the tangential direction Opposite power, so that secondary braking device will not be caused the fracture of the second push rod or the second cylinder in brake by tangential force It is fixed loosen, and since arcuate friction piece will not generate relative jitter, thus secondary braking device be capable of providing it is more steady Fixed brake force.
A kind of oversize vehicle chassis dynamometer provided by the utility model, can bring it is following the utility model has the advantages that
The utility model in motor by will set, when for that can effectively reduce chassis dynamometer when detecting oversize vehicle The volume of pedestal, and due to roller directly with the power output axis connection of dual-axle motor, thus it is possible to guarantee roller rotation one Cause property, meanwhile, stop roller or generate to tremble in order to avoid when detecting oversize vehicle, brake gear in the prior art cannot be stopped Dynamic, a secondary braking device is arranged in the utility model more, forms bikini with the first brake device that roller two sides are arranged in Brake, when braking to the roller for oversize vehicle, is capable of providing stable brake force, avoids sending out in brake process Raw shake can be realized the brake of the roller for oversize vehicle and be not easy to receive the effect of external force and rotate, guarantees to survey The safety of test run.
Detailed description of the invention
Below by clearly understandable mode, preferred embodiment is described with reference to the drawings, to oversize vehicle Chassis dynamometer Above-mentioned characteristic, technical characteristic, advantage and its implementation of machine are further described.
Fig. 1 is the structural schematic diagram of the pedestal of the utility model;
Fig. 2 is to obtain structural schematic diagram before the utility model does not install lifting device;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the scheme of installation of the centering lifting device of the utility model.
Drawing reference numeral explanation:
1- pedestal, 1a- apex angle support column, 1b- middle support column, 1c- bottom frame, 1d- piggyback pod, 1f- semi-circular baffle, 1e- bearing (ball) cover, 1f- brake support seat, 2- upper bracket, 3- roller, 4a- first brake device, 4b- secondary braking device, 4c- Cylinder block, 5- centering lifting device, the collateral plate of 5a-, 5b- retarder, 5c- lead screw, 5d-, which rises, lifts pedestal, 5e- pushing & lifting arms, and 5f- is led To axis, 5g- arc lift plate, 6- driving device.
Specific embodiment
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, attached drawing will be compareed below Illustrate specific embodiment of the present utility model.It should be evident that the accompanying drawings in the following description is only the one of the utility model A little embodiments for those of ordinary skill in the art without creative efforts, can also be according to these Attached drawing obtains other attached drawings, and obtains other embodiments.
To make simplified form, part relevant to the utility model is only schematically shown in each figure, they are simultaneously Its practical structures as product is not represented.
[embodiment 1]
Embodiment 1 discloses a kind of specific embodiment of oversize vehicle chassis dynamometer, comprising: pedestal 1, setting exist Upper bracket 2, dual-axle motor, roller 3, first brake device 4a, secondary braking device 4b and setting on pedestal 1 is in upper bracket 2 On centering lifting device 5.
Wherein, it as shown in Figure 1, pedestal 1 includes: bottom frame 1c, is set to the apex angle support column 1a of the corner bottom frame 1c, is used for The piggyback pod 1d of dual-axle motor is accommodated, piggyback pod 1d is fixedly arranged on the middle position of bottom frame 1c, and one is provided on piggyback pod 1d For accommodating the motor holding tank of dual-axle motor, the opening direction of motor holding tank upward, i.e., backwards to the direction of bottom frame 1c.Power The opposite both ends of cabin 1d are respectively provided with one for placing the bearing holding tank of bearing, the piggyback pod on the axis direction of bearing The both ends of the surface of 1d and the apex angle support column 1a of corresponding side form the chamber for accommodating roller 3, are equipped with roller 3, the roller 3 in the chamber It is connected on the power output shaft of dual-axle motor, and upper bracket 2 is set to the upper end of apex angle support column 1a.In the present embodiment, The two sides of piggyback pod 1d are respectively provided with a roller 3, and the top of bearing holding tank is equipped with bearing (ball) cover 1e.
When dual-axle motor is installed into motor holding tank, after bearing is also installed into bearing holding tank, installed in the upper end of bearing The both ends of bearing (ball) cover 1e, bearing (ball) cover 1e are connect by removable connectors such as screws with piggyback pod 1d.
By will be set in dual-axle motor, using this arrangement in the Chassis dynamometer machine base 1 for being used to detect oversize vehicle Form enables to the structure of pedestal 1 more compact, facilitates the carrying and placement of chassis dynamometer, simultaneously as each roller 3, directly with the output axis connection of motor, can guarantee the consistency rotated between each roller 3, improve the accuracy of detection.
As shown in Figures 2 and 3, first brake device 4a is set to 3 two sides of roller, and secondary braking device 4b is set to bearing On end cap 1e.First brake device 4a and secondary braking device 4b forms bikini brake.It is capable of providing stable brake force.
First brake device 4a includes the first gas-pressure mandril, connecting rod and the first friction plate.Wherein, the first gas-pressure mandril packet Include the first cylinder and the first push rod.The first end of first cylinder and the lower end surface of upper bracket 2 are hinged, the second end of the first cylinder with First push rod is slidably connected, and the first push rod moves reciprocatingly on the axis direction of the first cylinder, and the first push rod is far from the first gas One end of cylinder and the first end of connecting rod are hinged, and the second end of connecting rod is installed with the first friction plate, and the first friction plate is set to Connecting rod is on the end face of the outer round surface of roller 3.And the brake on the apex angle support column 1a of the body of rod of connecting rod and pedestal 1 Support base 1f is hinged.In the present embodiment, connecting rod is Z-type connecting rod.
The cross sectional shape of above-mentioned brake support seat 1f is triangle, is capable of providing stable support force.
Secondary braking device 4b includes: the second gas-pressure mandril and arcuate friction piece, wherein the second gas-pressure mandril includes second Cylinder and the second push rod, the first end of the second cylinder and the upper surface for being fixed on bearing (ball) cover 1e, the second end of the second cylinder with Second push rod is slidably connected, and the second push rod can move reciprocatingly on the axial direction of the second cylinder.
Wherein, the axis direction of the second push rod is perpendicular to horizontal plane, one end of separate second cylinder of the second push rod and arc Shape friction plate is fixedly connected.Arcuate friction piece is arcwall face close to the end face of the internal circular surfaces of rotating cylinder, and arcwall face and roller 3 Internal circular surfaces size is consistent, and when braking, arcwall face can be fitted in completely on the internal circular surfaces of roller 3, and arcuate friction piece can Think ceramic arc friction plate.
The brake process of the present embodiment are as follows:
The first cylinder of first brake device 4a releases the first push rod, and the first push rod is downward by the first end of connecting rod Pressure, using the body of rod of the first push rod and first friction plate of the brake support frame hinge joint as the point of rotation, in the second end of the first push rod The outer round surface for being close to roller 3 is ramped up, at the same time, the second cylinder of secondary braking device 4b pushes up the second push rod, Second push rod drives arcuate friction piece to move upwards, so that the arcwall face of arcuate friction piece is close to the internal circular surfaces of roller 3, knot Beam brake process.
Bikini brake is formed in brake by using first brake device 4a and secondary braking device 4b, while to rolling Cylinder 3 provides brake force and is capable of providing stable brake force when braking to the roller 3 for oversize vehicle, stops in time Stop, and prevent the shake in brake of roller 3, is not easy to receive the effect of external force and rotate, guarantees the safety of test vehicle And since first brake device 4a is arranged on the brake support seat 1f of measurement of power machine base 1, operator can be convenient from side Face is close to be installed or is repaired.
[embodiment 2]
As shown in figure 4, embodiment 2 is on the basis of embodiment 1, the centering lifting device 5 of embodiment 2, comprising: setting exists Driving motor on upper bracket 2, the driving motor are dual-axle motor, and are located at the unilateral middle position of upper bracket 2, upper bracket 2 On be installed with two couples of collateral plate 5a being parallel to each other, two opposite side supporting plate 5a are set to the two sides of dual-axle motor, each pair of collateral plate 5a Between be equipped with a roller 3, the axis of the roller 3 is perpendicular to collateral plate 5a.Along the both ends on the extending direction of collateral plate 5a It is respectively provided with a guide groove, which is arc guide groove, and bending direction is towards corresponding roller 3, the arc guide groove Positioned at the top of roller 3, and the corresponding diameter of a circle of long axis of arc guide groove is greater than the diameter of roller 3, every piece of collateral plate 5a The both ends of side far from roller 3 are respectively provided with a centering elevation mechanism, in the present embodiment, are equipped with eight centering elevators altogether Structure.It of courses, guide groove is not limited to arc guide groove, and linear guide groove is also possible, and details are not described herein again.
Centering lifting device 5 further include: arc lift plate 5g is symmetrically arranged with above the axis two sides of roller 3, The corresponding diameter of a circle of arc lift plate 5g is greater than the diameter of roller 3.On axis direction of the arc lift plate 5g along roller 3 Both ends be equipped with conllinear guiding axis 5f, the axis of guiding axis 5f is parallel to the axis of roller 3.
Centering elevation mechanism includes: that liter act pedestal 5d1, pushing & lifting arms 5e and sliding sleeve, the free end of guiding axis 5f pass through Arcuate guide axis 5f and the first end of pushing & lifting arms 5e are hinged, and the second end of pushing & lifting arms 5e connects with the upper shaft for lifting pedestal 5d1 is risen.It pushes away Lifting arm 5e can push guiding axis 5f to move back and forth in arc guide groove.
It rises to lift and is provided with through-hole and lower through-hole on pedestal 5d1, lower through-hole is located at the lower section of upper through-hole, and it is logical to rise act pedestal 5d1 Cross that through-hole is set on lead screw 5c and the axis of upper through-hole is parallel with the axis of lead screw 5c.Every lead screw 5c and a retarder 5b connection, retarder 5b are connect by transmission shaft with driving motor.Driving motor drives retarder 5b to drive lead screw 5c around certainly The axis of body rotates.The inner wall of sliding sleeve is equipped with internal screw thread, and the external screw thread on the internal screw thread and lead screw 5c is intermeshed, sliding Moving sleeve is fixedly connected with upper through-hole, when lead screw 5c rotation, by intermeshing internal screw thread and externally threaded relative motion, Sliding sleeve drives to rise to lift and move reciprocatingly on axis direction of the pedestal 5d1 along lead screw 5c.The both ends of the collateral plate 5a of same Centering elevation mechanism lead screw 5c rotate when, two rise lift pedestal 5d1 have the opposite direction of motion.
The lower section of lead screw 5c is equipped with a slide bar, and the axis of the slide bar is parallel with the axis of lead screw 5c, and it is logical to rise act pedestal 5d1 It crosses lower through-hole to be set on slide bar, when tire is contacted with arc lift plate 5g, pressure passes to liter by arc lift plate 5g Pedestal 5d1 is lifted, a part of pressure can be transmitted at slide bar, to reduce the pressure born at lead screw 5c, be avoided due to detection Oversize vehicle causes lead screw 5c receiving pressure excessive and leads to the phenomenon that breaking, and extends the service life of lead screw 5c, reduces lead screw 5c replacement frequency improves detection efficiency, reduces use cost.
Centering elevation mechanism further include: the first limit block and the second limit block, the first limit block and the second limit block are all provided with It is placed in same level height and is fixedly connected with the hithermost collateral plate 5a of the centering elevation mechanism, rise and lift pedestal 5d1 and be located at the Between one limited block and the second limited block, wherein the first limited block is equipped with the first limit hole, and lead screw 5c passes through the first limit hole, The diameter of first limit hole is greater than the diameter of lead screw 5c, and the first end of slide bar and the first limited block are affixed, and the second limited block is equipped with Second limit hole, lead screw 5c pass through the second limit hole, and the diameter of the second limit hole is greater than the diameter of lead screw 5c, the second end of slide bar It is affixed with the second limited block.By the way that the first limit block and the second limit block are arranged, liter act pedestal 5d1 can be limited lead screw 5c's Motion range on axis, and can be realized being fixedly connected for slide bar and collateral plate 5a.
[embodiment 3]
As shown in figure 4, embodiment 3 is on the basis of embodiment 2, the centering lifting device 5 of embodiment 3 further include: corresponding It is symmetrically arranged with arc limit slot on the opposite face of the collateral plate 5a in the two sides of the same roller 3, which leads positioned at arc To slot lower section and with arc guide groove it is concyclic.
Arc lift plate 5g is additionally provided with conllinear limit shaft along the two sides on the axis direction of roller 3, the limit shaft Axis is parallel with the axis of guiding axis 5f, and limit shaft is located at the lower section of guiding axis 5f, and the free end of limit shaft protrude into it is ipsilateral In arc limit slot, when guiding axis 5f is moved in arc guide groove, limit shaft correspondence moves in arc limit slot, the two Motion state having the same.
Limit shaft can cooperate with guiding axis 5f, so that arc lift plate 5g is remained and do not contacted with roller 3, avoid rolling Cylinder 3 is in rotation, the outer surface of roller 3 and the internal circular surfaces friction of arc lift plate 5g, lifts so that roller 3 and arc be caused to rise The damage of plate 5g.
[embodiment 4]
As shown in figure 4, embodiment 4, on the basis of embodiment 2~3, the upper end of the arc lift plate 5g of embodiment 4 passes through Bearing is rotatablely connected a support roller, which can rotate around the axis of its own, avoids detecting when tire In the process, outer surface of tire directly rubs with the upper end of arc lift plate 5g, to cause that tire and arc lift plate 5g's is upper The abrasion at end.
[embodiment 5]
As shown in Figure 1, embodiment 5, on the basis of Examples 1 to 4, the bearing holding tank of embodiment 5 is accommodated close to motor It is equipped with semi-circular baffle 1f at slot, which is semi-circular shape baffle, the interior diameter of a circle of semi-circular shape baffle >= The diameter of the output shaft of motor guarantees that the output shaft of motor can smoothly be stretched out from semi-circular shape baffle, and protrudes into setting and exist In bearing in bearing holding tank.It avoids bearing during the work time, generates offset, influence the stabilization of the output shaft rotation of motor Property.
Wherein, semi-circular baffle 1f is solid by modes such as welding after being integrally formed with piggyback pod 1d or making respectively Fixed connection.
In other specific embodiments, semi-circular baffle 1f is also possible to the semi-circular baffle 1f of other shapes, such as inner ring For the semi-circular baffle 1f of the shapes such as rectangular, rectangle;Also semi-circular baffle 1f, bearing (ball) cover can be set on bearing (ball) cover 1e Semi-circular baffle 1f cooperation on the semi-circular baffle 1f and piggyback pod 1d of 1e limits the axial displacement of bearing together, herein no longer It repeats.
[embodiment 6]
As depicted in figs. 1 and 2, for embodiment 6 on the basis of Examples 1 to 5, the bottom frame 1c of embodiment 6 is square frame Body, and bottom frame 1c is uniformly provided with two couples of middle support column 1b on the axis direction of bearing, the height of middle support column 1b with The height of apex angle support column 1a is identical, and the upper end of middle support column 1b is connect with upper bracket 2.Due to oversize vehicle quality compared with Greatly, the pressure on vertical direction for causing pedestal 1 to be subject to is larger, by adding middle support column 1b, can increase chassis entirety Anti-pressure ability in the vertical direction.
In other specific embodiments, middle support column 1b is not limited to 2 pairs, is also possible to 1 pair, 3 pairs or more, according to Actual conditions determine the quantity of setting middle standing pillar, and details are not described herein again.
[embodiment 7]
As shown in figure 3, embodiment 7, on the basis of Examples 1 to 6, the secondary braking device 4b of embodiment 7 passes through cylinder Seat 4c is fixedly connected on the upper surface of bearing (ball) cover 1e.
As shown in figure 3, cylinder block 4c includes the bottom plate being set on bearing (ball) cover 1e, bottom plate is set to far from bearing (ball) cover Fixed frame on the end face of 1e, fixed frame are equipped with top through-hole close to one end of the internal circular surfaces of roller 3.The first of second cylinder End is fixed on end face of the bottom plate far from bearing (ball) cover 1e.By the way that cylinder block 4c is arranged, the second cylinder can be realized better It is fixed.
One end far from the second cylinder of second push rod is connect by cylinder top 8 with arcuate friction piece.Cylinder top packet Include the friction plate fixed plate of cylinder push-rod, the second end that cylinder push-rod is set, one end far from the second cylinder of cylinder push-rod Equipped with threaded hole, one end far from the second cylinder of the second push rod is equipped with external screw thread, the external screw thread of the second push rod and threaded hole Screw-internal thread fit the second push rod of realization is fixedly connected with cylinder push-rod.Friction plate fixed plate on the end face of cylinder push-rod far from setting There is arcuate friction piece.Cylinder push-rod is located in the top through-hole of cylinder block 4c, and can do along the axis direction of the second cylinder It moves back and forth.
The second push rod and arcuate friction piece are connected by cylinder top, contact area can be increased, so that The fixation of arcuate friction piece is stronger, and since cylinder push-rod is located in the through-hole of top, in brake, the internal circular surfaces of roller 3 The power of a tangential direction can be generated to arcuate friction piece, top through-hole is resisted with cylinder push-rod, can be anti-to cylinder push-rod one To power so that cylinder top and the arcuate friction piece being arranged in cylinder top will not generate shake, therefore, the second brake is filled It sets 4b and is capable of providing more stable brake force.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the utility model Preferred embodiment, it is noted that for those skilled in the art, do not departing from the utility model principle Under the premise of, several improvements and modifications can also be made, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (10)

1. a kind of oversize vehicle chassis dynamometer characterized by comprising
Pedestal comprising bottom frame;It is set to the apex angle support column of four corners of the bottom frame;For accommodating the power of motor Cabin, the piggyback pod are set to the middle position of the bottom frame;
Wherein, be provided with a motor holding tank on the piggyback pod, the opening direction of the motor holding tank backwards to the bottom frame, The opposite both ends of the piggyback pod are respectively provided with one for placing the bearing holding tank of bearing, in the axis direction of the bearing On piggyback pod both ends of the surface and corresponding side apex angle support column formed accommodate roller chamber;The top of the bearing holding tank It is detachably connected bearing (ball) cover;
Dual-axle motor, the dual-axle motor are arranged in the motor holding tank;
The upper end of the pedestal is arranged in upper bracket, the upper bracket;
Roller, the power output axis connection of the roller and the motor, and it is located at the both ends of the surface and corresponding side of the piggyback pod Apex angle support column formed accommodate roller chamber;
It is set to the first brake device and secondary braking device of the roller two sides, the first end of the secondary braking device is solid Surely it is connected on the bearing (ball) cover of motor, the internal circular surfaces of second end and the roller have pre-determined distance;
In brake, positioned at the roller two sides first brake device from two sides by roller locking, the secondary braking device Second end be close to roller internal circular surfaces;
Centering lifting device, the centering lifting device are arranged on the upper bracket.
2. oversize vehicle chassis dynamometer according to claim 1, it is characterised in that:
The centering lifting device includes:
The driving device being set on upper bracket;
The collateral plate that two pairs be set on the upper bracket are parallel to each other, the roller be located at mutually cope with the collateral plate it Between, the both ends of the collateral plate are equipped with a guide groove, and the guide groove is located at the top of roller;
Centering elevation mechanism, the centering elevation mechanism are arranged along the extending direction of the collateral plate in every block of collateral plate Both ends;
Retarder, the power output axis connection of the power input shaft of the retarder and the driving device are located at same described Two ipsilateral centering elevation mechanisms of collateral plate pass through the power output axis connection of lead screw and the retarder;
Arc lift plate, the arc lift plate is respectively arranged at two sides above the axis of roller and arc lift plate is along roller Axis direction on two sides be equipped with conllinear guiding axis, the free end of the guiding axis passes through the guide groove and the centering Elevation mechanism rotation connection, the corresponding diameter of a circle of the arc lift plate are greater than the diameter of the roller;
The centering elevation mechanism includes liter pushing & lifting arms and sliding sleeve lifting pedestal, be rotatably provided in liter act pedestal upper end Cylinder, the first end of the pushing & lifting arms and the free end of guiding axis are rotatablely connected, and the second end of the pushing & lifting arms and the liter lift bottom The upper end rotation connection of seat;
The liter is lifted and is provided with a upper through-hole on pedestal, the liters act pedestal be set on the lead screw by the upper through-hole and The axis of the upper through-hole is parallel with the axis of the lead screw;
Internal screw thread is equipped on the inside of the sliding sleeve, the internal screw thread of the sliding sleeve is engaged with the external screw thread of the lead screw, institute Through-hole is stated to be slidably connected by sliding sleeve and lead screw;
The lower section of the lead screw is equipped with slide bar, and the axis of the slide bar and the axis of lead screw are parallel;
The liter lifts pedestal and is equipped with lower through-hole, and the lower through-hole is located at the lower section of upper through-hole and the axis of lower through-hole and upper through-hole Axis it is parallel, the slide bar pass through the lower through-hole on.
3. oversize vehicle chassis dynamometer according to claim 2, it is characterised in that:
The guide groove is arc guide groove, and the arc guide groove is corresponding to the geomery of roller.
4. oversize vehicle chassis dynamometer according to claim 2, it is characterised in that:
Arc limit slot is symmetrically arranged on the opposite face of the collateral plate of the two sides of the corresponding same roller;
The arc lift plate is additionally provided with conllinear limit shaft, the axis of the limit shaft along the two sides on the axis direction of roller Line is parallel with the axis of guiding axis, and the free end of the limit shaft is protruded into the arc limit slot and along the arc-shaped limit The long axis direction of slot moves reciprocatingly.
5. oversize vehicle chassis dynamometer according to claim 2, it is characterised in that:
The upper end of the arc lift plate is rotatablely connected a support roller, the outer surface of the support roller and tire interface.
6. oversize vehicle chassis dynamometer according to claim 1, it is characterised in that:
The bearing holding tank is equipped with semi-circular baffle, the semi-circular baffle and the piggyback pod one at motor holding tank It is body formed.
7. oversize vehicle chassis dynamometer according to claim 1, it is characterised in that:
The bottom frame is square framework;
A pair of of middle support column is at least arranged along the axis direction of the bearing in the bottom frame.
8. oversize vehicle chassis dynamometer according to claim 1, it is characterised in that:
The first brake device includes: the first gas-pressure mandril, connecting rod and the first friction plate;
First gas-pressure mandril includes the first cylinder and the first push rod;
The first end of first cylinder and the upper bracket are hinged, and the second end of first cylinder and the first push rod cooperate, First push rod is reciprocating along the axis direction of first cylinder;
The first end of first push rod one end and connecting rod far from the first cylinder is hinged;
The body of rod of the connecting rod and pedestal are hinged, and the connecting rod is equipped with the first friction plate close to one end of the roller, when When brake, first push rod is stretched out out of first cylinder, and first friction plate is attached to the outer round surface of the roller.
9. oversize vehicle chassis dynamometer described according to claim 1~any one of 8, it is characterised in that:
The secondary braking device includes the second gas-pressure mandril and arcuate friction piece;
Second gas-pressure mandril includes the second cylinder and the second push rod;
The first end of second cylinder is fixedly connected with the bearing (ball) cover, the second end and the second push rod of second cylinder Cooperation, second push rod are reciprocating along the axis direction of second cylinder;
The one end of second push rod far from the second cylinder is fixedly connected with the arcuate friction piece;
The arcuate friction piece is arcwall face close to the end face of the roller internal circular surfaces, and the arcwall face is interior with the roller Circular surfaces match.
10. oversize vehicle chassis dynamometer according to claim 9, it is characterised in that:
The secondary braking device is fixedly connected by cylinder block with the bearing (ball) cover;
The free end of second push rod of the secondary braking device is fixedly connected by cylinder top with the arcuate friction piece;
Wherein, the cylinder block includes the bottom plate affixed with bearing (ball) cover, is set to the bottom plate far from the bearing (ball) cover Fixed frame on end face, the fixed frame are equipped with top through-hole close to one end of the internal circular surfaces of the roller;
The first end of second cylinder of the secondary braking device is fixed on end face of the bottom plate far from the bearing (ball) cover;
The cylinder top includes cylinder push-rod and friction plate fixed plate, the first end of the cylinder push-rod and second push rod Be fixedly connected far from one end of second cylinder, the second end of the cylinder push-rod is fixedly connected with friction plate fixed plate, The cylinder push-rod passes through the top through-hole, and second push rod drives cylinder top along the axis side of second cylinder To moving reciprocatingly;
The other end of the separate cylinder push-rod of the friction plate fixed plate is equipped with arcuate friction piece.
CN201820525736.4U 2018-04-13 2018-04-13 A kind of oversize vehicle chassis dynamometer Active CN208206359U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820525736.4U CN208206359U (en) 2018-04-13 2018-04-13 A kind of oversize vehicle chassis dynamometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820525736.4U CN208206359U (en) 2018-04-13 2018-04-13 A kind of oversize vehicle chassis dynamometer

Publications (1)

Publication Number Publication Date
CN208206359U true CN208206359U (en) 2018-12-07

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806322A (en) * 2019-12-12 2020-02-18 重庆凯瑞汽车试验设备开发有限公司 Multi-motor mode chassis dynamometer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110806322A (en) * 2019-12-12 2020-02-18 重庆凯瑞汽车试验设备开发有限公司 Multi-motor mode chassis dynamometer

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Address after: 201505 No.59, Tinghua Road, Jinshan District, Shanghai

Patentee after: Shanghai angqin measurement and Control Technology Co., Ltd

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Patentee before: Shanghai Ang Qin observing and controlling Science and Technology Ltd.

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