CN212568416U - Wheel body adhesive force performance testing device - Google Patents

Abstract

The utility model discloses a wheel body adhesive force capability test device. The device comprises a machine body supporting mechanism, a friction contact mechanism and a suspension supporting mechanism which are arranged in the machine body supporting mechanism side by side along the vertical direction, wherein one of the friction contact mechanism and the suspension supporting mechanism makes linear feed motion along the left and right directions relative to the machine body supporting mechanism, a counterweight loading mechanism arranged on the suspension supporting mechanism for hanging the wheel body to be tested and a translation testing mechanism arranged in the machine body supporting mechanism for pushing one of the wheel body to be tested or the friction contact mechanism to make homodromous linear movement along the left and right directions. The utility model utilizes the pushing effect of the translation testing mechanism, can complete the test of the circumferential sliding tangential force or the axial sliding tangential force of the wheel body through the selection of the hanging mode of the wheel body to be tested, and creates conditions for enriching the testing mode of the adhesive force performance of the wheel body; different test modes can be executed by selecting the alignment relation among the translation test mechanism, the friction contact mechanism and the wheel body to be tested, so that the accuracy of the test result is guaranteed.

Description

Wheel body adhesive force performance testing device

Technical Field

The utility model belongs to the technical field of the check out test set technique and specifically relates to a wheel body adhesion capability test device.

Background

As is well known, wheels such as wheels and casters are one of the essential parts of various vehicles or other walking products, and the quality of the wheels often has a crucial influence on the overall performance of the products and the safety of walking; adhesion performance is a critical measure of wheel performance or quality. Taking the wheel on each type of vehicle as an example, the so-called "adhesion performance", also called adhesion performance or friction performance, generally refers to the most important physical performance exhibited by the interaction between the wheel surface and the road surface, which represents the maximum adhesion that the road surface may provide to the wheel (i.e., the ability of the wheel to remain adhered to the road surface without sliding when subjected to a considerable tangential force), so as to serve as a source of motive power for the vehicle to walk, brake or steer; therefore, the adhesion performance test of the wheel becomes an indispensable test item for ensuring the quality of the final product.

At present, the method for testing the adhesion performance of the wheel body in the industry mainly realizes the measurement of the friction performance of the wheel body by detecting the continuous sliding distance of the wheel body after the wheel body is braked and braked (namely, equivalently, the circumferential tangential force of the wheel body is tested), and when the wheel body is actually applied, the problems of vehicle rollover, limited driving, even safety accidents and the like caused by the lateral sliding (namely, axial sliding) of the wheel body often exist in large quantity; therefore, an axial sliding test of the wheel body is required to detect the adhesion or friction performance at this time.

In view of the fact that most of the existing testing devices cannot meet the above testing requirements, it is necessary to provide a new solution for testing the adhesion performance of the wheel body.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art existence, the utility model aims to provide a wheel body adhesive force capability test device.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a wheel body adhesion performance testing device comprises:

a body support mechanism;

the friction contact mechanism is arranged in the bottom end part of the machine body supporting mechanism along the horizontal direction;

the suspension support mechanism is arranged in the machine body support mechanism along the horizontal direction and is positioned right above the friction contact mechanism, and the friction contact mechanism or the suspension support mechanism makes linear feed motion along the left-right direction relative to the machine body support mechanism;

the counterweight loading mechanism is arranged on the suspension supporting mechanism along the vertical direction, and when the wheel body to be tested is hung at the bottom end of the counterweight loading mechanism, the counterweight loading mechanism downwards pushes and presses the wheel body to be tested along the vertical direction so that the peripheral surface of the wheel body to be tested is in abutting contact with the surface of the friction contact mechanism;

and

the translation testing mechanism is arranged in the machine body supporting mechanism along the horizontal direction and is distributed side by side left and right with the friction contact mechanism or the suspension supporting mechanism, and the translation testing mechanism makes linear feed motion along the left and right directions relative to the machine body supporting mechanism so as to push one of the wheel body to be tested or the friction contact mechanism to make same-direction linear movement.

Preferably, the counterweight loading mechanism includes a support seat disposed above the suspension support mechanism along the horizontal direction, a counterweight block stacked and locked on the top surface side of the support seat, a weight reduction pad embedded in the counterweight block from the top surface side of the counterweight block, and at least two suspension guide rods which slidably penetrate through the suspension support mechanism along the vertical direction, are locked on the bottom surface of the support seat at the top end, and are used for hanging the wheel body to be measured at the bottom end.

Preferably, two first adjusting through holes which are linearly distributed along the left-right direction and two second adjusting through holes which are linearly distributed along the front-back direction are formed in the suspension supporting mechanism and located within the contour coverage range of the supporting seat, guide shaft sleeves are coaxially arranged in the first adjusting through holes and the second adjusting through holes, and the two suspension guide rods penetrate through the first adjusting through holes or the second adjusting through holes through the corresponding guide shaft sleeves and are distributed.

Preferably, the friction contact mechanism includes at least two first guide rails installed in the bottom end portion of the body support mechanism side by side along the front-rear direction and a roughness simulation board installed on the first guide rails in a sliding manner along the horizontal direction for abutting against and contacting with the circumferential surface of the wheel body to be tested, and when the translation test mechanism abuts against the roughness simulation board, the translation test mechanism pushes the roughness simulation board to linearly move in the same direction along the first guide rails relative to the wheel body to be tested.

Preferably, the friction contact mechanism further comprises a first locking device arranged on each first guide slide rail for locking the relative position between the roughness simulation plate and the first guide slide rail; the suspension supporting mechanism comprises at least two second guide slide rails arranged in the top end portion of the machine body supporting mechanism side by side along the front-back direction, a load push plate arranged on the second guide slide rails in a sliding mode along the horizontal direction, and second locking devices arranged on each second guide slide rail and used for locking the relative position between the load push plate and the second guide slide rails, and the counterweight loading mechanism is arranged on the load push plate along the vertical direction.

Preferably, the first locking device comprises a first locking seat which is arranged at the end part of the first guide slide rail and the top surface of which is positioned below the bottom surface of the roughness simulation plate, and a first locking bolt which is inserted in the first locking seat along the vertical direction by screw threads, and the roughness simulation plate is provided with a first locking notch for the alignment and embedding of the locking bolt;

the second locking device comprises a second locking seat arranged at the end part of the second guide slide rail and the top surface of the second locking device is positioned below the bottom surface of the load push plate, and a second locking bolt inserted on the second locking seat along the vertical direction through threads, wherein a second locking notch for aligning and embedding the second locking bolt is formed in the load push plate.

Preferably, the suspension support mechanism further includes a suspension frame disposed in the machine body support mechanism, four first linear guide posts vertically disposed in the machine body support mechanism and respectively penetrating through corners of the suspension frame, two first transmission screw rods vertically disposed in the machine body support mechanism and respectively connected to the front and rear frame plates of the suspension frame by screw insertion, and a first synchronous motor disposed in the bottom end portion of the machine body support mechanism and connected to the two first transmission screw rods through a first synchronous belt, and the two second guide slide rails are respectively disposed on the front and rear frame plates of the suspension frame in the left-right direction.

Preferably, the translation testing mechanism includes a linear lifting assembly installed in the machine body supporting mechanism, a gantry hanging plate installed on the linear lifting assembly and driven by the linear lifting assembly to perform linear feeding motion along a vertical direction, a second transmission screw rod rotatably penetrating through the two symmetrical hanging arms of the gantry hanging plate along a left-right direction, a guide seat sleeved on the second transmission screw rod and having a top end surface in sliding contact connection with the bottom surface of the gantry hanging plate, a testing supporting plate hung on the guide seat and distributed side by side with the gantry hanging plate, a second synchronous motor installed on a cross beam of the gantry hanging plate and far away from one end of the friction contact mechanism and connected with the second transmission screw rod through a second synchronous belt, and a force measuring sensor installed on the testing supporting plate and near one end of the friction contact mechanism.

Preferably, the translation testing mechanism further comprises two suspension arms symmetrically arranged on the beam of the gantry crane plate along the front-back direction and respectively located at the front and back sides of the testing support plate, and each suspension arm is provided with a plurality of guide pulleys abutted against the bottom surface of the testing support plate.

Preferably, the linear lifting assembly comprises two guide transverse plates which are distributed on the gantry crane plate side by side along the left-right direction and are locked with the gantry crane plate into a whole, a transmission transverse plate which is positioned between the two guide transverse plates and is locked with the gantry crane plate into a whole, a second linear guide column which is arranged in the machine body supporting mechanism along the vertical direction and slidably penetrates through the front end part and the rear end part of the guide transverse plate to be distributed, a third transmission screw rod which is arranged in the machine body supporting mechanism along the vertical direction and is sleeved on the front end part and the rear end part of the transmission transverse plate in a threaded manner, and a third synchronous motor which is arranged in the bottom end part of the machine body supporting mechanism and is connected with the third transmission screw rod through a third.

By adopting the scheme, the utility model can complete the test of the circumferential sliding tangential force or the axial sliding tangential force of the wheel body by selecting the hanging mode of the wheel body to be tested by utilizing the pushing effect of the translation testing mechanism, thereby creating conditions for enriching the testing mode of the adhesive force performance of the wheel body; different test modes can be executed by selecting the alignment relation among the translation test mechanism, the friction contact mechanism and the wheel body to be tested, so that the accuracy of the test result is guaranteed; the multifunctional electric heating cooker is simple and compact in structure, rich in functions and high in practical value and market popularization value.

Drawings

Fig. 1 is an assembly diagram of the overall structure of an embodiment of the present invention;

fig. 2 is an assembly schematic diagram of the internal structure of the embodiment of the present invention;

FIG. 3 is a schematic view of the structural assembly of the frictional contact mechanism according to the embodiment of the present invention;

fig. 4 is a schematic view of the structural assembly of the suspension support mechanism of the embodiment of the present invention;

fig. 5 is an exploded view of the counterweight loading mechanism according to the embodiment of the present invention;

fig. 6 is a schematic structural assembly diagram of a translation testing mechanism according to an embodiment of the present invention;

fig. 7 is an exploded view (one) of the translation testing mechanism according to the embodiment of the present invention;

fig. 8 is an exploded schematic view (ii) of the translation testing mechanism according to the embodiment of the present invention;

fig. 9 is a schematic structural state diagram of the wheel body to be measured when being circumferentially hung according to the embodiment of the present invention;

fig. 10 is a schematic structural state diagram of the wheel body to be measured in the axial hanging manner according to the embodiment of the present invention;

fig. 11 is a schematic diagram of a mechanical model of a first test mode according to an embodiment of the present invention;

fig. 12 is a schematic view of a mechanical model of a second test mode according to an embodiment of the present invention.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 12, the present embodiment provides a wheel body adhesion performance testing apparatus, which includes:

a body supporting mechanism 100, which is mainly composed of a body frame 110, a door panel 120, an operation platform 130, a control assembly, and the like, to provide sufficient assembly and movement space for other mechanisms of the testing device and to perform centralized control of the relevant mechanisms;

a friction contact mechanism 200, which is horizontally disposed in the bottom end of the machine body supporting mechanism 100, and mainly sets different friction coefficients according to the testing requirements so as to simulate the roughness of the ground;

a suspension support mechanism 300 which is horizontally disposed in the body support mechanism 100 and is located right above the frictional contact mechanism 200, and one of the frictional contact mechanism 200 and the suspension support mechanism 300 is capable of linear feed motion in the left-right direction with respect to the body support mechanism 100;

a counterweight loading mechanism 400, which is installed on the suspension support mechanism 300 along the vertical direction, and when the wheel body 600 to be measured is hung at the bottom end of the counterweight loading mechanism 400, the counterweight loading mechanism 400 pushes and presses the wheel body 600 to be measured downwards along the vertical direction so that the circumferential surface of the wheel body 600 to be measured is in abutting contact with the surface of the friction contact mechanism 200;

and

and the translation testing mechanism 500 is horizontally arranged in the machine body supporting mechanism 100 and is distributed side by side with the friction contact mechanism 200 or the suspension supporting mechanism 300, and the translation testing mechanism 500 can perform linear feeding motion along the left-right direction relative to the machine body supporting mechanism 100 so as to push one of the wheel body 600 to be tested and the friction contact mechanism 200 to perform linear movement in the same direction.

Thus, when a wheel body 600 such as a wheel, a caster wheel or the like is hung on the bottom end of the weight loading mechanism 400 as the wheel body 600 to be tested (the specific hanging manner of the wheel body 600 to be tested can be selected from the circumferential hanging manner shown in fig. 9 or the axial hanging manner shown in fig. 10 according to the requirement of the test item or by optimizing the structure of the bottom end of the weight loading mechanism 400, the term "circumferential hanging" can be understood to mean that the central axis of the wheel axle of the wheel body 600 to be tested is parallel to the moving direction of the translation testing mechanism 500 so as to test the circumferential or lateral sliding tangential force of the wheel body, and the term "axial hanging" can be understood to mean that the central axis of the wheel axle of the wheel body 600 to be tested is perpendicular to the moving direction of the translation testing mechanism 500 so as to test the axial sliding tangential force of the wheel body), the wheel body 600 to be tested between the weight loading mechanism 400 and the friction contact mechanism 200 can be pressed against the friction contact by the gravity effect of the weight loading On the surface of the mechanism 200, so as to form a clamping function on the wheel body 600 to be tested to prevent the wheel body 600 to be tested from rotating relative to the counterweight mechanism 400 or the friction contact mechanism 200; then, by utilizing the characteristic that one of the friction contact mechanism 200 and the suspension support mechanism 300 can linearly move in the left-right direction relative to the machine body support mechanism 100, under the condition that the translation test mechanism 500 is opposite to the friction contact mechanism 200 and the friction contact mechanism 200 can linearly move, the translation test mechanism 500 moves towards the direction of the friction contact mechanism 200 and pushes the friction contact mechanism 200 to move in the same direction relative to the suspension support mechanism 300 (together with the counterweight loading mechanism 400 and the wheel body 600 to be tested) after the two contact each other (namely, a test mode similar to that shown in fig. 11 is executed), so that the thrust applied by the translation test mechanism 500 is used as one of index data for measuring or calculating the wheel body adhesion force; under the condition that the translational testing mechanism 500 is opposite to the wheel body 600 to be tested and the suspension supporting mechanism 300 can move linearly, the translational testing mechanism 500 moves towards the direction of the wheel body 600 to be tested and pushes the wheel body 600 to be tested (together with the counterweight loading mechanism 400 and the suspension supporting mechanism 300) to move in the same direction relative to the friction contact mechanism 200 after the two contact each other (i.e. a testing mode similar to that shown in fig. 12 is performed), so that the thrust applied by the translational testing mechanism 500 is used as one of index data for measuring or calculating the wheel body adhesion force.

Based on the above, the pushing effect of the translation testing mechanism 500 is utilized, the test of the circumferential sliding tangential force or the axial sliding tangential force of the wheel body can be completed through the selection of the hanging mode of the wheel body 600 to be tested, and further conditions are created for the test of the adhesive force performance of the wheel body; by selecting the alignment relationship between the translation testing mechanism 500, the friction contact mechanism 200 and the wheel body 600 to be tested, different testing modes can be executed according to the wheel body diameter and other conditions to create conditions for improving the accuracy of the testing result (for example, the wheel body with the diameter within the range of 60-250mm can adopt the testing mode shown in fig. 12, and the wheel body with the diameter within the range of 250-450mm can adopt the testing mode shown in fig. 11).

In order to ensure the pushing effect of the weight loading mechanism 400 on the wheel body 600 to be measured, so that the circumferential surface of the wheel body 600 to be measured can be in close contact with the surface of the frictional contact mechanism 200, the weight loading mechanism 400 of the present embodiment includes a supporting base 410 disposed above the suspension supporting mechanism 300 along the horizontal direction, a weight block 420 stacked and locked on the top surface side of the supporting base 410, a weight reducing pad 430 embedded in the weight block 420 from the top surface side of the weight block 420, and at least two suspension guide rods 440 penetrating through the suspension supporting mechanism 300 in a sliding manner along the vertical direction, and having top ends locked on the bottom surface of the supporting base 410 and bottom ends for hanging the wheel body 600 to be measured. Therefore, the suspension guide rod 440 can be used for hanging the wheel body 600 to be tested through connection with the wheel axle of the wheel body 600 to be tested, and when the weight block 420 is arranged on the support seat 410, the wheel body 600 to be tested can be pushed and pressed on the surface of the friction contact mechanism 200 through the sliding through structural relationship between the suspension guide rod 440 and the suspension support mechanism 300, so that conditions are created for subsequent motion and thrust tests of the translation test mechanism 500; meanwhile, the counterweight 420 can be locked on the support seat 410 by using a screw locking method and the like, so as to avoid the phenomenon that the force applied by the counterweight 420 is unbalanced and the like caused by the shaking of the wheel body 600 to be tested or the suspension guide rod 440 in the test process; in addition, in the implementation, it should be noted that: the suspension guide rod 440 with the length being selectable according to the diameter of the wheel body 600 to be measured should avoid the phenomenon that the circumferential surface of the wheel body 600 to be measured cannot contact with the surface of the frictional contact mechanism 200 due to the too short length of the suspension guide rod 440, and the like, and when the length of the suspension guide rod 440 is too long, the weight of the counterweight block 420 can be adjusted by selecting and disassembling the weight of the weight reduction pad 430, so as to adjust the weight error caused by the length of the suspension guide rod 440.

In order to facilitate the different forms of hanging of the wheel body 600 to be tested according to actual conditions, and thus create a precondition for testing the circumferential tangential force or the axial tangential force of the wheel body, two first adjusting through holes 450 and two second adjusting through holes 460 are formed in the suspension support mechanism 300 and located within the coverage area of the contour of the support base 410, the first adjusting through holes 450 and the second adjusting through holes 460 are linearly distributed along the left-right direction, and the first adjusting through holes 450 and the second adjusting through holes 460 are coaxially provided with guide bushings 470, and the two suspension guide rods 440 are distributed through the first adjusting through holes 450 or the second adjusting through holes 460 via the corresponding guide bushings 470. Therefore, when the suspension guide rod 440 penetrates through the first adjusting through hole 450 to be distributed, the wheel body 600 to be tested can be assembled in a circumferential hanging manner, so that the lateral sliding adhesion force of the wheel body 600 to be tested can be tested conveniently; when the suspension guide rod 440 penetrates through the second adjusting through hole 460 to be distributed, the wheel body 600 to be tested can be assembled in an axial suspension manner, so that the wheel body 600 to be tested can be conveniently tested for axial sliding adhesion; meanwhile, the structural form of the adjusting through hole can also create conditions for adjusting the installation position of the guide shaft sleeve 470, so that the distance between the two suspension guide rods 440 can be adjusted conveniently according to the size specification of the support base 410 (together with the balancing weight 420), and further the balance of the force application of the balancing weight 420 is ensured.

Preferably, the friction contact mechanism 200 of the embodiment includes at least two first guide rails 210 installed in the bottom end portion of the machine body supporting mechanism 100 side by side along the front-back direction, and a roughness simulation board 220 (which is mainly used for simulating a road surface in contact with the wheel body and may be made of a material having a certain roughness, such as a steel plate, according to practical situations) installed on the first guide rails 210 in a sliding manner along the horizontal direction for making abutting contact with the circumferential surface of the wheel body 600 to be tested, and when the translation testing mechanism 500 abuts against the roughness simulation board 220, the translation testing mechanism 500 pushes the roughness simulation board 220 to move linearly along the first guide rails 210 in the same direction relative to the wheel body 600 to be tested. Therefore, the suspension support mechanism 300 (together with the weight loading mechanism 400 and the wheel body 600 to be tested) can be fixed in position relative to the machine body support mechanism 100, and the friction contact mechanism 200 can perform linear motion relative to the machine body support mechanism 100, so that the whole testing apparatus can perform the testing mode as shown in fig. 11.

On this basis, in order to ensure that the whole device can selectively execute the test mode shown in fig. 11 or 12 according to actual requirements, the frictional contact mechanism 200 of the present embodiment further includes a first locking device 230 mounted on each first guide rail 210 for locking the relative position between the roughness simulation plate 220 and the first guide rail 210; accordingly, the suspension support mechanism 300 includes at least two second guide rails 310 installed in the top portion of the body support mechanism 100 side by side in the front-rear direction, a load push plate 320 installed on the second guide rails 310 in a sliding manner in the horizontal direction, and a second locker 330 installed on each second guide rail 310 for locking the relative position between the load push plate 320 and the second guide rails 310, and the weight loading mechanism 400 is installed on the load push plate 320 in the vertical direction. Therefore, when the test mode shown in fig. 11 needs to be executed, the positions of the counterweight loading mechanism 400 and the wheel body 600 to be tested can be fixed only by locking the load push plate 320 on the second guide slide rail 310 by using the second locker 330, which creates conditions for the subsequent translation test mechanism 500 to push the friction contact mechanism 200 to move relatively; on the contrary, when the test mode shown in fig. 12 needs to be performed, the first lock 230 may be used to lock the roughness simulation board 220 on the first guide rail 210, so as to create conditions for the subsequent translational test mechanism 500 to complete the adhesion test by pushing the wheel body 600 to be tested (together with the weight loading mechanism 400 and the load pushing board 320).

In order to simplify the structure of the locking device and facilitate the locking and unlocking operations, the first locking device 230 of the present embodiment includes a first locking seat 231 installed at the end of the first guiding slide rail 210 and having a top surface located below the bottom surface of the roughness simulation plate 220, and a first locking bolt 232 inserted into the first locking seat 231 along the vertical direction, wherein the roughness simulation plate 220 is provided with a first locking notch 221 for the locking bolt 232 to be aligned and embedded; correspondingly, the second locking device 330 includes a second locking seat 331 installed at the end of the second guiding sliding rail 310 and having a top surface located below the bottom surface of the load pushing plate 320, and a second locking bolt 332 inserted into the second locking seat 231 along the vertical direction, wherein the load pushing plate 320 is provided with a second locking notch 321 for the second locking bolt 332 to be aligned and engaged. Taking the first fastener 230 as an example, after the roughness simulation plate 220 is pushed to a certain position along the first guiding rail 210, the bottom surface thereof is overlapped on the top surface of the first locking seat 231 and the screw portion of the first locking bolt 232 is embedded in the first locking notch 221, and then the roughness simulation plate 220 can be firmly pressed on the top surface of the first locking seat 231 by using the nut portion thereof by selectively screwing the first locking bolt 232, thereby realizing the locking and fastening of the roughness simulation plate 220; otherwise, the roughness simulation board 220 may be unlocked, which is not described herein.

To facilitate the adjustment of the height of the weight loading mechanism 400 according to the diameter of the wheel body 600 to be measured, therefore, the weight error caused by the suspension guide rod 440 can be eliminated to the maximum extent, the suspension support mechanism 300 of the present embodiment further includes a suspension frame 340 disposed in the machine body support mechanism 100, four first linear guide posts 350 vertically disposed in the machine body support mechanism 100 and respectively penetrating through the corners of the suspension frame 340, two first transmission screws 360 vertically disposed in the machine body support mechanism 100 and respectively connected to the front and rear frame plates of the suspension frame 340 by screw insertion, and a first synchronous motor 380 disposed in the bottom end portion of the machine body support mechanism 100 and connected to the two first transmission screws 360 through a first synchronous belt 370, and two second guide slide rails 310 respectively disposed on the front and rear frame plates of the suspension frame 340 in the left-right direction. Therefore, the forward and reverse rotation of the first transmission screw 360 can be driven by controlling the forward and reverse rotation of the first synchronous motor 380, so that the suspension frame 340 can drive the counterweight loading mechanism 400 and the wheel body 600 to be measured to adjust the up and down position through the load push plate 320. In addition, under the condition that the suspension support mechanism 300 has the capability of moving linearly left and right and up and down relative to the machine body support mechanism 100, in order to ensure that the translation test mechanism 500 can eliminate the pressure borne by the suspension guide rod 440 to the maximum extent or avoid the influence on the test result caused by the shaking of the wheel body 600 to be tested in the process of applying thrust to the vehicle body 600 to be tested together with the load push plate 320 and the counterweight loading mechanism 400 in the same direction, in combination with the structure of the counterweight loading mechanism 400, the third guide rails 240 distributed in parallel to each first guide rail 210 can be arranged at the outer side of each first guide rail 210, each third guide rail 240 is slidably provided with a third linear guide column 250 distributed along the vertical direction, and the two third linear guide columns 250 are connected into a whole through a guide cross beam 260 (i.e. the front end and the rear end of the guide cross beam 260 are respectively sleeved on the third linear guide columns 250 on the corresponding sides), one of the suspension guide rods 440 penetrates the guide beam 260; therefore, the guide beam 260 can effectively prevent the suspension guide 440 and thus the wheel body 600 from shaking.

In order to optimize the performance and structure of the whole device to the maximum, the translation testing mechanism 500 of the present embodiment includes a linear lifting assembly installed in the machine body supporting mechanism 100, a gantry hanging plate 510 installed on the linear lifting assembly and performing linear feeding motion along the vertical direction under the driving of the linear lifting assembly, a second transmission screw 520 rotatably penetrating through two symmetrical hanging arms of the gantry hanging plate 510 along the left-right direction, a guide seat 530 threadedly installed on the second transmission screw 520 and having a top end surface connected with the bottom surface of the gantry hanging plate 510 in a sliding contact manner, a testing supporting plate 540 hung on the guide seat 530 and vertically distributed side by side with the gantry hanging plate 510, a second synchronous motor 560 installed on the cross beam of the gantry hanging plate 510 and far away from one end of the friction contact mechanism 200 and connected with the second transmission screw 520 through a second synchronous belt 550, and a force measuring sensor 570 installed on the testing supporting plate 540 and near one end of the friction contact mechanism 200 (a force measuring sensor 570 Which may employ a load cell such as an S-shaped structure depending on the actual situation). Therefore, after the wheel body 600 to be tested is hung and the circumferential surface of the wheel body to be tested abuts against the friction contact mechanism 200, the second synchronous motor 560 is controlled to drive the second transmission screw 520 to synchronously rotate, so that the second transmission screw 520 and the guide seat 530 are utilized to drive the test support plate 540, the test support plate 540 drives the force measuring sensor 570 to move towards the direction of the friction contact mechanism 200, a corresponding detection signal can be generated due to pressure in the process that the force measuring sensor 570 abuts against the friction contact mechanism 200 or the wheel body 600 to be tested and continuously pushes one of the force measuring sensor 570 and the friction contact mechanism 200 to move relatively, and thrust index data can be obtained by reading the detection signal.

In order to ensure that the testing support plate 540 can smoothly drive the force measuring sensor 570 to move linearly in the left-right direction relative to the gantry crane 510, the translation testing mechanism 500 of the present embodiment further includes two suspension arms 580 symmetrically installed on the cross beam of the gantry crane 510 in the front-back direction and respectively located at the front and back sides of the testing support plate 540, and each suspension arm 580 is provided with a plurality of guide pulleys 581 abutted against the bottom surface of the testing support plate 540. Therefore, the guide pulley 581 can assist the test support plate 540 to perform a smooth linear motion, thereby providing for accurate position abutment of the load cell 570 against the frictional contact mechanism 200 or the wheel body 600 to be tested.

Preferably, in order to ensure that the linear lifting assembly can smoothly and precisely drive the main body (especially the load cell 570) of the translation testing mechanism 500 to perform linear lifting motion so as to adjust the alignment relationship between the load cell 570 and the friction contact mechanism 200 and the wheel body 600 to be tested (or the counterweight loading mechanism 400 and the suspension supporting mechanism 300), the linear lifting assembly of this embodiment includes two guiding transverse plates 591 distributed side by side on the gantry hanging plate 510 along the left-right direction and locked with the gantry hanging plate 510, a transmission transverse plate 592 located between the two guiding transverse plates 591 and locked with the gantry hanging plate 510, second linear guiding columns 593 vertically installed in the machine body supporting mechanism 100 and slidably distributed through the front and rear ends of the guiding transverse plates 591, a third transmission screw installed in the machine body supporting mechanism 100 along the vertical direction and threadedly engaged with the front and rear ends of the transmission transverse plate 592, and a bottom end 594 installed in the machine body supporting mechanism 100 And a third synchronous motor 596 connected to the third drive screw 596 through a third synchronous belt 595. Therefore, the third synchronous motor 596 can be driven to synchronously rotate in the forward and reverse directions through forward and reverse rotation control of the third synchronous motor 596, so that the gantry crane 510 can be driven to move up and down through the transmission transverse plate 592 and the guide transverse plate 591 by utilizing the threaded plug-in connection relationship between the third synchronous motor 594 and the transmission transverse plate 592, and further the height position of the load cell 570 can be adjusted.

In specific implementation, the door panel 120 corresponding to the counterweight loading mechanism 400 and the suspension support mechanism 300 may be configured as a sliding door according to actual needs, so as to form a peripheral protection for the testing area while conveniently assembling the wheel body 600 to be tested on the counterweight loading mechanism 400, and a corresponding operation hole may be opened in the region of the operating platform 130 corresponding to the counterweight loading mechanism 400 to facilitate deployment and replacement of the counterweight block 420; meanwhile, the control assembly can be composed of a touch screen, a PLC execution controller, an indicator light, operating buttons such as emergency stop, start and reset which are matched with the touch screen, the PLC execution controller and the indicator light according to actual conditions, so that centralized control of corresponding action mechanisms in the device is realized; the specific system structure and scheme of the whole control assembly can be selected by those skilled in the art according to the operation principle of each action mechanism in the device and by combining with the technology known in the art, and will not be described herein again.

In addition, in order to more clearly explain the test mode of the testing device of this embodiment and provide relevant references for the testing device in practical application, the following mechanical relationships can be established according to the corresponding model when executing the corresponding test mode so as to obtain the corresponding friction coefficient (i.e. adhesion data), specifically:

1. test mode as shown in FIG. 11

1) In the case where the wheel body 600+ to be measured is in an unfixed position (i.e.: directly stacked in the case of the roughness simulation plate 220), the roughness simulation plate 220 is pushed by the translation test mechanism 500 so that the thrust force F1 at this time is obtained by the load cell 570.

2) When the wheel body 600+ to be measured is loaded at a fixed position (i.e.: in the case where the wheel body 600 to be tested is pushed against the roughness simulation plate 220 by the weight loading mechanism 400), the roughness simulation plate 220 is pushed by the translation testing mechanism 500 so that the thrust force F2 at this time is obtained by the load cell 570.

3) The friction coefficient μ 1 between the wheel body 600 to be measured and the roughness simulation plate 220 can be obtained according to the following formula:

2. test mode as shown in FIG. 12

1) Under the condition that the frictional contact mechanism 200 is in a locked state and the suspension support mechanism 300 is in an unloaded state, the thrust F3 of the load push plate 320 is firstly measured (which is not reflected in the model, has a fixed value, does not change due to the load of the wheel body 600 to be measured, and is only influenced by environmental factors, so that the thrust F3 is preferably measured in advance before each measurement to avoid the influence of the environmental factors), then the wheel body 600 to be measured is pushed onto the roughness simulation plate 220 by using the counterweight loading mechanism 400, and finally the roughness simulation plate 220 is pushed by using the translation test mechanism 500 so as to obtain the thrust F2 by using the load cell 570.

2) The friction coefficient μ 0 between the wheel body 600 to be measured and the roughness simulation plate 220 can be obtained according to the following formula:

F2＝F1+F3＝F3+μ(M1+M2)g

of course, the device of the present embodiment may also be used to perform corresponding test tests according to standard specifications such as EN14619 scooter safety requirements and test methods.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.

Claims (10)

1. The utility model provides a wheel body adhesion force capability test device which characterized in that: it comprises

A body support mechanism (100);

the friction contact mechanism (200), the said friction contact mechanism (200) is set up in the bottom end of the organism supporting mechanism (100) along the horizontal direction;

the suspension supporting mechanism (300) is arranged in the machine body supporting mechanism (100) along the horizontal direction and is positioned right above the friction contact mechanism (200), and the friction contact mechanism (200) or the suspension supporting mechanism (300) performs linear feeding motion along the left-right direction relative to the machine body supporting mechanism (100);

the counterweight loading mechanism (400) is arranged on the suspension supporting mechanism (300) along the vertical direction, and when the wheel body to be measured (600) is hung at the bottom end of the counterweight loading mechanism (400), the counterweight loading mechanism (400) downwards pushes the wheel body to be measured (600) along the vertical direction so that the peripheral surface of the wheel body to be measured (600) is in abutting contact with the surface of the friction contact mechanism (200);

and

the translation testing mechanism (500) is arranged in the machine body supporting mechanism (100) along the horizontal direction and is distributed side by side left and right with the friction contact mechanism (200) or the suspension supporting mechanism (300), and the translation testing mechanism (500) makes linear feeding motion relative to the machine body supporting mechanism (100) along the left and right directions so as to push one of the wheel body to be tested (600) or the friction contact mechanism (200) to make same-direction linear movement.

2. The wheel body adhesion performance testing device of claim 1, wherein: the counterweight loading mechanism (400) comprises a supporting seat (410) arranged above the suspension supporting mechanism (300) along the horizontal direction, a counterweight block (420) which is overlapped and locked on the top surface side of the supporting seat (410), a weight reducing pad (430) which is embedded in the counterweight block (420) from the top surface side of the counterweight block (420), and at least two suspension guide rods (440) which are distributed in the suspension supporting mechanism (300) in a sliding mode along the vertical direction, the top ends of the suspension guide rods are locked on the bottom surface of the supporting seat (410), and the bottom ends of the suspension guide rods are used for hanging the wheel body (600) to be measured.

3. The wheel body adhesion performance testing device of claim 2, wherein: two first adjusting through holes (450) which are linearly distributed along the left-right direction and two second adjusting through holes (460) which are linearly distributed along the front-back direction are formed in the outline coverage range of the supporting seat (410) on the suspension supporting mechanism (300), guide shaft sleeves (470) are coaxially arranged in the first adjusting through holes (450) and the second adjusting through holes (460), and the two suspension guide rods (440) penetrate through the first adjusting through holes (450) or the second adjusting through holes (460) through the corresponding guide shaft sleeves (470) to be distributed.

4. The wheel body adhesion performance testing device of claim 1, wherein: the friction contact mechanism (200) comprises at least two first guide slide rails (210) arranged in the bottom end part of the machine body supporting mechanism (100) side by side along the front-back direction and a roughness simulation plate (220) arranged on the first guide slide rails (210) in a sliding mode along the horizontal direction and used for abutting and contacting with the peripheral surface of the wheel body to be tested (600), and when the translation testing mechanism (500) abuts against the roughness simulation plate (220), the translation testing mechanism (500) pushes the roughness simulation plate (220) to linearly move in the same direction along the first guide slide rails (210) relative to the wheel body to be tested (600).

5. The wheel body adhesion performance testing device of claim 4, wherein: the friction contact mechanism (200) further comprises a first locker (230) arranged on each first guide slide rail (210) and used for locking the relative position between the roughness simulation plate (220) and the first guide slide rail (210); the suspension support mechanism (300) comprises at least two second guide slide rails (310) arranged in the top end portion of the machine body support mechanism (100) side by side along the front-rear direction, a load push plate (320) arranged on the second guide slide rails (310) in a sliding manner along the horizontal direction, and second lockers (330) arranged on each second guide slide rail (310) and used for locking the relative positions between the load push plate (320) and the second guide slide rails (310), wherein the counterweight loading mechanism (400) is arranged on the load push plate (320) along the vertical direction.

6. The wheel body adhesion performance testing device of claim 5, wherein: the first locking device (230) comprises a first locking seat (231) which is arranged at the end part of the first guide slide rail (210) and the top surface of which is positioned below the bottom surface of the roughness simulation plate (220), and a first locking bolt (232) which is inserted in the first locking seat (231) along the vertical direction in a threaded manner, wherein a first locking notch (221) for the alignment and embedding of the locking bolt (232) is formed in the roughness simulation plate (220);

the second locking device (330) comprises a second locking seat (331) which is arranged at the end part of the second guide slide rail (310) and the top surface of which is positioned below the bottom surface of the load push plate (320) and a second locking bolt (332) which is inserted in the second locking seat (331) along the vertical direction in a threaded manner, and the load push plate (320) is provided with a second locking notch (321) for the alignment and embedding of the second locking bolt (332).

7. The wheel body adhesion performance testing device of claim 5, wherein: the suspension support mechanism (300) further comprises a suspension frame (340) arranged in the machine body support mechanism (100), four first linear guide posts (350) which are arranged in the machine body support mechanism (100) along the vertical direction and respectively penetrate through the corners of the suspension frame (340), two first transmission screw rods (360) which are arranged in the machine body support mechanism (100) along the vertical direction and are respectively in threaded insertion and sleeve connection with the front frame plate and the rear frame plate of the suspension frame (340), and a first synchronous motor (380) which is arranged in the bottom end part of the machine body support mechanism (100) and is connected with the two first transmission screw rods (360) through a first synchronous belt (370), wherein the two second guide slide rails (310) are respectively arranged on the front frame plate and the rear frame plate of the suspension frame (340) along the left-right direction.

8. The wheel adhesion performance testing apparatus of any one of claims 1-7, wherein: the translation testing mechanism (500) comprises a linear lifting component arranged in the machine body supporting mechanism (100), a gantry hanging plate (510) which is arranged on the linear lifting component and is driven by the linear lifting component to do linear feeding motion along the vertical direction, a second transmission screw rod (520) which is rotatably penetrated through two symmetrical hanging arms of the gantry hanging plate (510) along the left-right direction and is distributed, a guide seat (530) which is sleeved on the second transmission screw rod (520) in a threaded manner and is connected with the top end surface of the gantry hanging plate (510) in a sliding contact manner, a testing supporting plate (540) which is hung on the guide seat (530) and is distributed side by side up and down with the gantry hanging plate (510), a second synchronous motor (560) which is arranged on the cross beam of the gantry hanging plate (510), is far away from one end of the friction contact mechanism (200) and is connected with the second transmission screw rod (520) through a second synchronous belt (550), and a second synchronous motor (560) which is arranged on the testing supporting plate (540) and is adjacent to the friction contact mechanism (200) A load cell (570) on one end of the shaft.

9. The wheel body adhesion performance testing device of claim 8, wherein: the translation testing mechanism (500) further comprises two suspension arms (580) which are symmetrically arranged on the cross beam of the gantry crane plate (510) along the front-back direction and are respectively positioned at the front side and the rear side of the testing support plate (540), and each suspension arm (580) is provided with a plurality of guide pulleys (581) which are abutted against the bottom surface of the testing support plate (540).

10. The wheel body adhesion performance testing device of claim 8, wherein: the linear lifting assembly comprises two guide transverse plates (591) which are distributed on the gantry crane plate (510) side by side in the left-right direction and are locked with the gantry crane plate (510) into a whole, a transmission transverse plate (592) which is positioned between the two guide transverse plates (591) and is locked with the gantry crane plate (510) into a whole, second linear guide columns (593) which are arranged in the machine body supporting mechanism (100) in the vertical direction and penetrate through the front end part and the rear end part of the guide transverse plate (591) in a sliding manner, a third transmission screw rod (594) which is arranged in the machine body supporting mechanism (100) in the vertical direction and is sleeved on the front end part and the rear end part of the transmission transverse plate (592) in a threaded manner, and a third synchronous motor (596) which is arranged in the bottom end part of the machine body supporting mechanism (100) and is connected with the third transmission screw rod (594) through a.

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