CN216050739U

CN216050739U - Gantry type tire radial rigidity testing device

Info

Publication number: CN216050739U
Application number: CN202121835905.2U
Authority: CN
Inventors: 靳红玲; 赵亚君; 马思鹏; 李宵
Original assignee: Northwest A&F University
Current assignee: Northwest A&F University
Priority date: 2021-08-08
Filing date: 2021-08-08
Publication date: 2022-03-15
Anticipated expiration: 2031-08-08

Abstract

The utility model provides a gantry type tire radial rigidity testing device which comprises a gantry, wherein slide rails and slide blocks are arranged on the inner sides of two vertical columns of the gantry, the slide blocks and a pressing plate are fixedly installed, a pressure sensor is installed between an upper pressing plate and a lower pressing plate, and a hydraulic jack is fixed on the top surface of the upper pressing plate; the bottom surface of the lower pressure plate is in contact with the tread of the tire, and the tire is arranged on the support column through the central shaft of the tire. When the device is used, the pressure plate moves under the action of the hydraulic jack and applies pressure to the tire tread, and the digital display depth vernier caliper arranged on the portal frame upright column reads the radial deformation of the tire. Changing the tire pressure and the pressure, repeating the process, and obtaining the change curve of the radial deformation of the tire along with the vertical load under different tire pressures, thereby obtaining the radial rigidity of the tire. The utility model accurately controls the applied pressure through the jack, and the vernier caliper reads the radial deformation value of the tire, thereby replacing a large-scale tire comprehensive testing machine, being economical and efficient.

Description

Gantry type tire radial rigidity testing device

Technical Field

The utility model relates to the field of tire performance testing devices, in particular to a gantry type tire radial rigidity testing device.

Background

The radial stiffness of a tire is also called as static load characteristic, and means that the ratio of the radial load to the radial deformation of the tire under the conditions of a specified rim and given inflation pressure is one of basic evaluation indexes reflecting the mechanical properties of the tire. Generally, the radial rigidity test of the tire needs to be carried out on a large-scale tire comprehensive testing machine, the testing equipment is expensive, and the use of the large-scale tire testing machine greatly increases the testing cost for researchers only needing to test one or more tires. Therefore, a testing device which can accurately test and obtain the radial rigidity value of the tire and can greatly reduce the testing cost is needed.

Disclosure of Invention

The utility model aims to provide a gantry type tire radial stiffness testing device to solve the problems in the background technology.

In order to achieve the purpose, the utility model provides the following technical scheme: a gantry type radial rigidity testing device for tires comprises a gantry; the inner sides of two vertical columns of the portal frame are provided with slide rails, the slide rails are provided with slide blocks matched with the slide rails, the slide blocks are provided with L-shaped plates, the upper parts of the L-shaped plates are fixedly provided with lower press plates, the upper surfaces of the lower press plates are provided with circular grooves matched with the pressure sensors in size, the grooves are provided with pressure sensors, the upper surfaces of the pressure sensors are provided with upper press plates, the peripheries of the upper press plates and the lower press plates are provided with through holes, and guide columns can pass through the through holes; a hydraulic jack is fixed on the top surface of the upper pressure plate, and the top of the hydraulic jack is in contact with the lower surface of a portal frame beam; the bottom surface of the lower pressure plate is in contact with the tread of the tire, the tire is arranged on a tire central shaft, the tire central shaft is arranged in a V-shaped groove of a support column, and the bottom of the support column is designed into a dovetail shape and is matched with a dovetail groove of the base; the supporting column penetrates through a fixing bolt, the fixing bolt penetrates through a limiting sleeve and is fixed on a portal frame upright post, and meanwhile, the position of the supporting column is fixed; a pressure sensor display is arranged on the portal frame beam; and a digital display depth vernier caliper is installed on the upright column on the right side of the portal frame, and a measuring base of the digital display depth vernier caliper is tightly attached to the top of the L-shaped plate.

As a preferred technical scheme of the utility model, a guide post is arranged between the upper pressure plate and the lower pressure plate so as to ensure that the downward pressing movement of the upper pressure plate relative to the lower pressure plate can be accurately guided and the parallelism between the upper pressure plate and the lower pressure plate can be ensured.

As a preferable technical scheme of the utility model, the supporting columns with different heights and the tire central shafts with different thicknesses are replaced to adapt to tires with different models for testing.

As a preferred technical scheme of the utility model, the dovetails at the bottoms of the supporting columns are matched with the dovetail grooves, so that the supporting columns can slide along the dovetail grooves, and the length of the limiting sleeve is changed simultaneously, so that the distance between the two supporting columns is changed, and the tires of different models can be conveniently installed.

As a preferred technical scheme of the utility model, the upper and lower holes of the support column with different heights are passed through by bolts, and are assisted by installing a limiting sleeve so as to ensure the verticality between the support column and the base.

The utility model has the beneficial effects that: the utility model mainly comprises a portal frame, a hydraulic jack, a pressure sensor, a pressing plate, a supporting column and the like, and has simple structure and convenient installation; the pressure can be accurately controlled by increasing or reducing the pressure through the hydraulic jack, the radial deformation of the tire can be read by the digital display depth vernier caliper, and the reading precision can meet the requirement of a radial rigidity test, so that a large-scale special tire comprehensive testing machine is replaced, the testing cost can be greatly reduced, and the testing machine is economical and efficient; meanwhile, the operation is convenient and fast during the test; can the tire of different models of adaptation through changing different support columns and spacing sleeve, the commonality is strong.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiment 1 of the utility model and together with the description serve to explain the utility model and not to limit the utility model.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a lower base plate structure.

FIG. 3 is a schematic view of the support column and the base.

In the figure: 1. a pressure sensor display; 2. a gantry; 3. a hydraulic jack; 4. a digital display depth vernier caliper; 5, an L-shaped plate; 6. a slider; 7. a guide post; 8. a slide rail; 9. a guide post nut; 10. a tire; 11. fixing the bolt; 12. a limiting sleeve; 13. a tire central axis; 14. a pressure sensor; 15. an upper pressure plate; 16. a circular groove of the lower pressing plate; 17. a lower pressing plate; 18. a support column V-shaped groove; 19. a support pillar; 20. a base; 21. a base dovetail groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and should not be construed as limiting the scope of the utility model.

Referring to fig. 1, fig. 2 and fig. 3, the present invention provides a gantry type radial rigidity testing apparatus for a tire, including a gantry 2; the inner sides of two vertical columns of the portal frame 2 are provided with slide rails 8, the slide rails 8 are provided with slide blocks 6 matched with the slide rails 8, the slide blocks are provided with L-shaped plates 5, the upper parts of the L-shaped plates 5 are fixedly provided with lower press plates 17, circular grooves 16 matched with pressure sensors 14 in size are machined in the upper surfaces of the lower press plates 17, the pressure sensors 14 are placed on the circular grooves 16, upper press plates 15 are placed on the upper surfaces of the pressure sensors 14, through holes are formed in the peripheries of the upper press plates 15 and the lower press plates 17, and guide columns 7 can penetrate through the through holes; a hydraulic jack 3 is fixed on the top surface of the upper pressure plate 15, and the top of the hydraulic jack 3 is in contact with the lower surface of a cross beam of the portal frame 2; the bottom surface of the lower pressure plate 17 is in contact with the tread of the tire 10, the tire 10 is arranged on a tire central shaft 13, the tire central shaft 13 is arranged in a V-shaped groove 18 of a support column 19, the bottom of the support column 19 is designed into a dovetail shape, and the bottom of the support column 19 is matched with a base 20 through a base dovetail groove 21; the supporting column 19 is penetrated by a fixing bolt 11, the fixing bolt 11 penetrates through a limiting sleeve 12 and is fixed on an upright post of the portal frame 2, and meanwhile, the position of the supporting column 19 is fixed; and a pressure sensor display 1 is arranged on a cross beam of the portal frame 2. Install digital display degree of depth slide caliper 4 on the stand of portal frame 2 right side, digital display degree of depth slide caliper 4 measures the lower surface of base and hugs closely 5 tops of L shaped plate.

Further, a guide post 7 is arranged between the upper pressing plate 15 and the lower pressing plate 17 to ensure that the pressing movement of the upper pressing plate 15 can be accurately guided, and meanwhile, the parallelism between the upper pressing plate 15 and the lower pressing plate 17 is ensured.

Further, different heights of the support columns 19 and different thicknesses of the tire center shafts 13 are replaced to adapt different models of tires 10 for testing.

Further, the dovetails at the bottoms of the supporting columns 19 are matched with the base dovetail grooves 21, so that the supporting columns 19 can slide along the base dovetail grooves 21, and the length of the limiting sleeve 12 can be changed, so that the distance between the two supporting columns 19 can be changed, and different models of tires 10 can be installed conveniently.

Furthermore, the upper and lower holes of the support column 19 with different heights are penetrated by the fixing bolt 11, and are assisted by installing the limiting sleeve 12, so as to ensure the verticality between the support column 19 and the base 20.

The working principle of the utility model is as follows: before use, firstly adjusting a hydraulic jack 3 to enable the upper part of the hydraulic jack 3 to be in contact with the lower surface of a cross beam of a portal frame 2, enabling a lower pressing plate 17 to be just in contact with the tread of a tire 10, setting a pressure sensor display 1 to be zero, enabling the lower surface of a measuring base of a digital display depth vernier caliper 4 to be tightly attached to the upper surface of an L-shaped plate 5, and recording the initial numerical value of the digital display depth vernier caliper 4; when the device is used, the hydraulic jack 3 works to enable the upper pressing plate 15 and the lower pressing plate 17 to move downwards along the sliding rail 8 along with the sliding block 6, the lower pressing plate 17 applies pressure to the tread of the tire 10, and the tire 10 deforms when being pressed; and continuously pressurizing, stopping continuously pressurizing when the reading of the pressure sensor display 1 reaches the required pressure, shifting the digital display depth vernier caliper 4 to measure the base again to enable the lower surface of the base to be tightly attached to the upper surface of the L-shaped plate 5, recording the final numerical value of the digital display depth vernier caliper 4, and taking the difference between the initial numerical value and the final numerical value as the radial deformation of the tire 10 under the given air pressure and load. The air pressure and the applied pressure of the tire 10 are changed, and the process is repeated, so that the change curve of the radial deformation of the tire 10 along with the vertical load under different tire pressures can be obtained, and further the radial rigidity of the tire is obtained.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a radial rigidity test device of planer-type tire, includes portal frame (2), its characterized in that: the inner sides of two vertical columns of the portal frame (2) are provided with slide rails (8), the slide rails (8) are provided with slide blocks (6) matched with the slide rails (8), the slide blocks are provided with L-shaped plates (5), the upper parts of the L-shaped plates (5) are fixedly provided with lower press plates (17), the upper surfaces of the lower press plates (17) are provided with circular grooves (16) matched with the pressure sensors (14) in size, the circular grooves (16) are provided with the pressure sensors (14), the upper surfaces of the pressure sensors (14) are provided with upper press plates (15), through holes are formed in the peripheries of the upper press plates (15) and the lower press plates (17), and guide columns (7) can pass through the through holes; a hydraulic jack (3) is fixed on the upper surface of the upper pressure plate (15), and the top of the hydraulic jack (3) is in contact with the lower surface of a cross beam of the portal frame (2); the bottom surface of the lower pressing plate (17) is in contact with the tread of the tire (10), the tire (10) is arranged on a tire central shaft (13), the tire central shaft (13) is arranged in a V-shaped groove (18) of a supporting column (19), the bottom of the supporting column (19) is designed to be dovetail-shaped, and the supporting column is matched with a base (20) through a base dovetail groove (21); the supporting column (19) is penetrated by a fixing bolt (11), the fixing bolt (11) penetrates through a limiting sleeve (12) and is fixed on an upright post of the portal frame (2), and meanwhile, the position of the supporting column (19) is fixed; a pressure sensor display (1) is arranged on a cross beam of the portal frame (2); install digital display degree of depth slide caliper (4) on portal frame (2) right side stand, digital display degree of depth slide caliper (4) measure the lower surface of base and hug closely L shaped plate (5) top.

2. A gantry type tire radial rigidity testing device as claimed in claim 1, wherein guide posts (7) are arranged between the upper platen (15) and the lower platen (17) to ensure that the pressing motion of the upper platen (15) can be accurately guided, and the parallelism between the upper platen (15) and the lower platen (17) can be ensured.

3. A gantry type tyre radial rigidity testing device as claimed in claim 1, characterized in that supporting columns (19) with different heights and tyre central shafts (13) with different thicknesses are replaced to adapt different models of tyres (10) for testing.

4. The gantry type tire radial rigidity testing device is characterized in that dovetails at the bottoms of the supporting columns (19) are matched with the base dovetail grooves (21), so that the supporting columns (19) can slide along the base dovetail grooves (21), and the length of the limiting sleeve (12) is changed, so that the distance between the two supporting columns (19) is changed, and tires (10) of different models can be installed conveniently.

5. The gantry type radial rigidity testing device for the tire as claimed in claim 1, wherein the upper and lower holes of the supporting column (19) with different heights are penetrated by the fixing bolt (11) and assisted by installing the limiting sleeve (12) so as to ensure the perpendicularity between the supporting column (19) and the base (20).