CN217505475U

CN217505475U - Be used for resistant cutting of laboratory sizing material, puncture performance evaluation equipment

Info

Publication number: CN217505475U
Application number: CN202122453929.8U
Authority: CN
Inventors: 吴爱芹; 李夕鑫; 刘世杰; 张迎港
Original assignee: Stone Testing Technology Co ltd
Current assignee: Qingdao Guoxiang Yiwen Rubber Technology Co ltd
Priority date: 2021-10-12
Filing date: 2021-10-12
Publication date: 2022-09-27
Anticipated expiration: 2031-10-12

Abstract

The utility model belongs to the technical field of tire experimental facilities, concretely relates to be used for resistant cutting of laboratory sizing material, prick performance evaluation equipment, including frame I, road surface simulation subassembly, sample execution module and angular adjustment subassembly. The pavement simulation assembly and the angle adjusting assembly are fixedly arranged on the base I, and the sample execution assembly is arranged on the angle adjusting assembly; metal wheel and cutter can be changed among the road surface simulation subassembly, and sample executive component is used for fixed sample that awaits measuring, and angle adjustment subassembly can carry out angle adjustment to the sample that awaits measuring. The utility model discloses cutting and the process of stabbing among the simulation tire operation process that can the at utmost, experience with cutting blade collision, ride, the process that leaves obtain better accurate experimental data, experimental parameter adjustment range is more extensive, has better correlation with the tire actual driving.

Description

Be used for resistant cutting of laboratory sizing material, puncture performance evaluation equipment

Technical Field

The utility model belongs to the technical field of tire experimental facilities, concretely relates to be used for resistant cutting of laboratory sizing material, prick performance evaluation equipment.

Background

Tires are ground-rolling circular rings of elastomeric rubber articles fitted on various vehicles or machines. Generally mounted on a metal rim, which supports the body of the vehicle, cushions external shocks, makes contact with the road and guarantees the driving characteristics of the vehicle. In the development of rubber compound formulations, laboratories are mainly evaluating the friction resistance of rubber compounds by reference to standard rubber compounds, such as an akron abrasion tester, a DIN abrasion tester, a lambbourne tester and the like. The cutting resistance and puncture resistance of the rubber compound with the experimental formula are evaluated without unified standards and instruments, and all tire enterprises perform evaluation according to own methods.

At present, the market has similar testing machines for dynamic evaluation on the cutting resistance of rubber materials, the design principle is that a rubber wheel rotates independently, a blade is designed at the horizontal or vertical position, the rotating rubber wheel is cut off at a certain frequency and pressure, and the cutting resistance of the rubber materials can be evaluated. However, in this design, the rubber wheel cannot undergo the actual process of tire collision with the cutting blade, riding (piercing, cutting), and separation (pulling, tearing).

SUMMERY OF THE UTILITY MODEL

Aiming at the technical scheme that in the prior art, when a rubber wheel is tested in a laboratory, only a static test of cutting resistance is carried out, and dynamic tests such as collision, puncture, cutting, pulling out, tearing and the like in the actual movement process of a tire cannot be simulated, in order to obtain cutting resistance test data which is closer to the actual tire movement, the device for evaluating the cutting resistance and puncture resistance of rubber materials in the laboratory is provided.

The technical scheme of the utility model as follows:

the utility model provides a be used for resistant cutting of laboratory sizing material, puncture performance evaluation equipment which characterized in that: the device comprises a base I, a pavement simulation assembly, a sample execution assembly and an angle adjusting assembly;

the pavement simulation assembly comprises a pneumatic cylinder, an air pressure control assembly and a cutter assembly; the pneumatic cylinder and the pneumatic control assembly are fixedly mounted on the machine base I, and a piston rod end of the pneumatic cylinder is fixedly connected with a swing head; the cutter assembly comprises a rack, a swing rod and a metal wheel; the frame is fixedly connected to the base I; the swing rod is an L-shaped rod piece, one end of the swing rod is hinged to the swing head, the middle corner position of the swing rod is hinged to the rack, and the other end of the swing rod is fixedly connected with a metal wheel; a cutter is arranged at the circumferential edge of the metal wheel;

the angle adjusting assembly comprises a base II and is fixedly connected to the base I;

the sample execution assembly comprises a motor, a transmission device and a sample fixing device; the motor is fixedly arranged on the base II; the transmission device is fixedly arranged on the base II and is connected with the output end of the motor; the sample fixing device is fixedly connected to the output end of the transmission device and used for mounting a sample to be tested, and the horizontal height of the axis of the sample fixing device is equal to that of the cutter.

Further, the air pressure control assembly comprises an air source switch, a pressure regulating valve, an air filter and a switching valve; the air source switch, the pressure regulating valve, the air filter and the switching valve for controlling the action of the pneumatic cylinder are fixedly arranged on the machine base I.

Furthermore, the frame is fixedly connected with a counting detector for counting, and the counter is connected with a control system.

Furthermore, the angle adjusting assembly also comprises a pointer, an angle ruler, a hand wheel, a lead screw, an angle adjusting frame, a connecting plate and a lead screw base; the angle adjusting frame is fixedly arranged on the machine base I, the connecting plate is rotatably connected to the upper end of the angle adjusting frame through a rotating shaft, and the lower end part of the connecting plate is horizontally and fixedly connected with the machine base II; the lead screw base is fixedly connected to the lower part of the angle adjusting frame and is close to the lower end part of the connecting plate; the screw rod is rotatably arranged in the screw rod base, one end of the screw rod is tightly attached to the connecting plate, and the other end of the screw rod is fixedly connected with a hand wheel; the angle ruler is fixedly connected to the side end face of the angle adjusting frame; the pointer is fixedly connected to the rotating shaft and is positioned on the end face of the side of the angle adjusting frame on the same side, where the angle adjusting frame is provided with the angle ruler.

Further, the sample fixing device comprises a sample fixing shaft, a sample clamping plate I, a sample clamping plate II and a fastening device; the sample fixing shaft is fixedly connected to the output end of the transmission device, and the sample clamping plate I is arranged on the sample fixing shaft and is positioned on one side close to the output end of the transmission device; the sample clamping plate II is arranged on the sample fixing shaft and is positioned on one side of the output end far away from the transmission device; the fastening device is rotatably arranged at one end of the outermost side of the sample fixing shaft.

Further, the sample fixing device also comprises a load calibration sensor; before the experiment, the load calibration sensor is sleeved on the sample fixing shaft and fixedly installed through the sample clamping plate I, the sample clamping plate II and the fastening device; and the distance between the center point of the load calibration sensor and the stress point is equal to the radius of the sample to be measured.

According to the technical scheme, compared with the prior art, the invention has the following advantages:

1. the cutter arranged on the surface of the metal wheel can be used for replacing various materials and shapes, is flexible and changeable, and can adapt to different experimental working conditions;

2. the rotating speed of the sample to be tested can be effectively controlled through the transmission device, the adjustment can be carried out according to requirements, the experiment parameters can be adjusted, and the application range is wide;

3. the angle adjusting component can adjust the angle of the sample to be measured, so that the cutter can be ensured to cut at different angles, and the experimental range is further expanded;

4. the cutting and puncturing process in the running process of the tire can be simulated to the maximum extent, the process of collision, riding (puncturing, cutting) and leaving (pulling and tearing) with the cutting blade is experienced, better and accurate experimental data are obtained, and the method has better correlation with the actual running of the tire.

Drawings

Fig. 1 is a front view of the present invention;

fig. 2 is a perspective view of the angle adjustment assembly of the present invention;

fig. 3 is a perspective view of the sample fixing device of the present invention;

fig. 4 is a perspective view of the load calibration sensor of the present invention;

fig. 5 is a perspective view of the metal wheel and cutter.

The mark in the figure is:

1. machine base I2, pneumatic cylinder 3, swing head 4, frame

5. Swing rod 6, metal wheel 7, engine base II 8, motor

9. Driving device 10, gas source switch 11, pressure regulating valve 12 and gas filter

13. Switching valve 14, counting detector 15, pointer 16 and angle ruler

17. Handwheel 18, lead screw 19, angle adjusting bracket 20 and connecting plate

21. Screw base 22, rotating shaft 23, sample fixing shaft 24, sample clamping plate I

25. Sample clamping plate II 26, fastening device 27, load calibration sensor 28 and cutter

Detailed Description

The present invention will be described in further detail with reference to the following embodiments and the accompanying drawings.

A device for evaluating the cutting and pricking resistance of rubber materials in a laboratory comprises a machine base I1, a pavement simulation assembly, a sample execution assembly and an angle adjusting assembly;

as shown in fig. 1, the road surface simulating assembly includes a pneumatic cylinder 2, a pneumatic control assembly, and a cutter assembly. The vertical fixed mounting of pneumatic cylinder 2 is on frame I1, and pneumatic cylinder 2 is two-way pneumatic cylinder 2, and pneumatic cylinder 2's piston rod end fixedly connected with yaw 3, yaw 3 are used for connecting pendulum rod 5. A control assembly back plate is fixedly installed on the machine base I1 and used for installing an air pressure control assembly and located on the right side of the air pressure cylinder 2. The air pressure control assembly comprises an air source switch 10, a pressure regulating valve 11, an air filter 12 and a switching valve 13, the air source switch 10, the pressure regulating valve 11, the air filter 12 and the switching valve 13 are fixedly installed on a control assembly back plate, one end of the air source switch 10 is connected with an air source through a hose, the other end of the air source switch is connected with the air inlet end of the pressure regulating valve 11, the air outlet end of the pressure regulating valve 11 is connected with the air inlet end of the air filter 12, the air outlet end of the air filter 12 is connected with the air inlet end of the switching valve 13, the air outlet end of the switching valve 13 is connected with the air inlet end of the pneumatic cylinder 2, and the other end of the pneumatic cylinder 2 is connected with the switching valve 13.

As shown in fig. 1, the cutter assembly includes a frame 4, a swing link 5, and a metal wheel 6. The vertical fixed mounting of frame 4 is located the left side of pneumatic cylinder 2 on frame I1, comprises two vertical installations and riser I and the fixed axle of fixed mounting between two risers I that are parallel to each other.

As shown in fig. 1, the swing rod 5 is an L-shaped rod, one end of which is hinged to the swing head 3, the other end of which is fixedly provided with a metal wheel 6, and the corner position of which is rotatably connected to a fixed shaft of the frame 4. As shown in fig. 5, the metal wheel 6 is a circular plate member, and a cutter 28 and a guard are mounted at a circumferential position thereof. The material specifications of the cutter 28 and the baffle plate can be selected in various ways according to different experimental requirements.

As shown in FIG. 1, the angle adjustment assembly is fixedly mounted on the machine base I1 and is located on the left side of the machine frame 4. As shown in FIG. 2, the angle adjustment assembly comprises a machine base II 7, a pointer 15, an angle ruler 16, a hand wheel 17, a lead screw 18, an angle adjustment frame 19, a connecting plate 20 and a lead screw base 21. The angle adjusting frame 19 comprises a bottom plate and two vertical plates II vertically arranged on the bottom plate, and a rotating shaft 22 is rotatably arranged between the two vertical plates II. The upper end of the connecting plate 20 is fixedly arranged on the rotating shaft 22, the lower end of the connecting plate 20 is provided with a machine base II 7, and the machine base II 7 is perpendicular to the connecting plate 20. The pointer 15 is fixedly installed on the rotating shaft 22, is located on the outer end face of one vertical plate, and can rotate at the same angle along with the rotating shaft 22. An angle ruler 16 is fixedly arranged on the end face of the outer side of the vertical plate provided with the pointer 15, and the zero point scale of the angle ruler is the position pointed by the pointer 15 when the machine base II 7 is in a horizontal state. The screw base 21 is in an inverted T shape, the upper end of the screw base is provided with a threaded through hole for mounting the screw 18, the screw base 21 is fixedly mounted, and the axis of the threaded through hole is perpendicular to the connecting plate 20. The screw 18 is arranged in a threaded through hole of the screw base 21, one end of the screw is tightly attached to the connecting plate 20, the inclination angle of the connecting plate 20 is changed through the extension and contraction of the screw 18, and the inclination angle of the machine base II 7 is further changed. The hand wheel 17 is fixedly installed on the outer end face of the screw 18 and is used for changing the extension and contraction of the screw 18 through rotation.

As shown in fig. 1, the sample execution assembly comprises a motor 8, a transmission 9 and a sample fixing means. The motor 8 is a servo motor 8 and is fixedly arranged on the machine base II 7. And the transmission device 9 is fixedly arranged on the base II 7, the input end of the transmission device is fixedly connected with the output end of the motor 8, and the output end of the transmission device is fixedly connected with the sample fixing device. The motor 8 drives the sample fixing device to rotate through the transmission device 9, further drives the sample to be tested to rotate, and simulates the dynamic working condition of the running tire. The rotation speed is changed through the transmission device 9 so as to meet the requirements of different experimental parameters.

As shown in fig. 3, the sample fixing apparatus includes a sample fixing shaft 23, a sample clamping plate i 24, a sample clamping plate ii 25, and a fastening device 26. The sample fixing shaft 23 is fixedly arranged at the output end of the transmission device 9, the horizontal height of the axis of the sample fixing shaft is equal to the horizontal height of the axis of the metal wheel 6, one third of the surface of the sample fixing shaft close to the transmission device 9 is a smooth surface, and the other two thirds of the surface of the sample fixing shaft is provided with threads. One end of the sample fixing shaft 23 close to the transmission device 9 is rotatably provided with a sample clamping plate I24, and a sample clamping plate II 25 is arranged on the surface of the sample fixing shaft 23 and positioned on the outer side of the sample clamping plate I24. The fastening device 26 is rotatably installed on the surface, provided with threads, of the sample fixing shaft 23 and located on the outer side of the sample clamping plate II 25, and is used for fastening the sample clamping plate II 25 after the installation of a to-be-tested sample is completed.

As shown in fig. 4, the sample holding device further comprises a load calibration sensor 27. Before the experiment begins, the load calibration sensor 27 is sleeved on the sample fixing shaft 23 and is fixedly installed through the sample clamping plate I24, the sample clamping plate II 25 and the fastening device 26. The distance between the center point of the load calibration sensor 27 and the force point is equal to the radius of the test sample wheel. Each time the load is adjusted, the load is mounted on the sample fixing shaft 23, the position is adjusted so that the center stress point is at the center of the metal wheel 6, and the load and the unload are repeatedly performed by the adjustment until the set load for the experiment is reached.

As shown in fig. 1, the frame 4 is provided with a counting detector 14 for counting, and is connected with a control system, so that the rotation number of the metal wheel 6 can be detected, the rotation number can be set through the control system, and the motor 8 can be controlled to stop running after the rotation number required by the experiment is reached.

The working principle is as follows:

before the experiment is carried out, the hand wheel 17 is rotated, the screw rod 18 extends, and the front top connecting plate 20 rotates to a test angle; the appropriate baffles and cutters 28 are selected to be mounted on the metal wheel 6.

The load calibration sensor 27 is arranged on the sample fixing shaft 23, so that the stress point is positioned at the center of the metal wheel 6; the air source switch 10 is opened, the pneumatic cylinder 2 contracts to drive the swing rod 5 to rotate clockwise, so that the swing rod 5 drives the metal wheel 6 to approach the position of the load calibration sensor 27 along the circumferential direction, pressure adjustment is carried out through the pressure regulating valve 11, and the load required by an experiment is achieved through the telescopic length of the piston rod of the pneumatic cylinder 2; and controlling the piston rod of the pneumatic cylinder 2 to stretch and retract, so that the metal wheel 6 is far away from the load calibration sensor 27, and the load calibration sensor 27 is detached.

A sample to be tested is arranged on the sample fixing shaft 23 and is fixedly arranged through a sample clamping plate I24, a sample clamping plate II 25 and a fastening device 26; the pneumatic cylinder 2 contracts, and a load is applied to a sample to be tested through the cutter 28 and the baffle on the metal wheel 6; the rotation speed and the number of rotations of the motor 8 are set, and the experiment is started.

The number of rotations of the metal wheel 6 is detected by the counter detector 14, and when the number of rotations reaches a set number, the motor 8 stops rotating, and the test is completed.

The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.

Claims

1. The utility model provides a be used for resistant cutting of laboratory sizing material, puncture performance evaluation equipment which characterized in that: the device comprises a machine base I (1), a pavement simulation component, a sample execution component and an angle adjusting component;

the pavement simulation assembly comprises a pneumatic cylinder (2), a pneumatic control assembly and a cutter assembly; the pneumatic cylinder (2) and the pneumatic control component are fixedly arranged on the machine base I (1), and the piston rod end of the pneumatic cylinder (2) is fixedly connected with the swing head (3); the cutter assembly comprises a rack (4), a swing rod (5) and a metal wheel (6); the frame (4) is fixedly connected to the base I (1); the swing rod (5) is an L-shaped rod piece, one end part of the swing rod is hinged to the swing head (3), the middle corner position of the swing rod is hinged to the rack (4), and the other end of the swing rod is fixedly connected with a metal wheel (6); a cutter (28) is arranged at the circumferential edge of the metal wheel (6);

the angle adjusting assembly comprises a machine base II (7), and the angle adjusting assembly is fixedly connected to the machine base I (1);

the sample execution assembly comprises a motor (8), a transmission device (9) and a sample fixing device; the motor (8) is fixedly arranged on the machine base II (7); the transmission device (9) is fixedly arranged on the base II (7) and is connected with the output end of the motor (8); the sample fixing device for mounting the sample to be tested is fixedly connected to the output end of the transmission device (9), and the horizontal height of the axis of the sample fixing device is equal to the horizontal height of the cutter (28).

2. The apparatus for evaluating the cut and puncture resistance of a laboratory compound according to claim 1, wherein: the air pressure control assembly comprises an air source switch (10), a pressure regulating valve (11), an air filter (12) and a switching valve (13); the air source switch (10), the pressure regulating valve (11), the air filter (12) and the switching valve (13) which are used for controlling the action of the pneumatic cylinder (2) are fixedly arranged on the machine base I (1).

3. The apparatus for evaluating the cut and puncture resistance of a laboratory compound according to claim 1, wherein: the frame (4) is fixedly connected with a counting detector (14) for counting, and the counting detector (14) is connected with a control system.

4. The apparatus for evaluating the cut and puncture resistance of a laboratory compound according to claim 1, wherein: the angle adjusting assembly further comprises a pointer (15), an angle ruler (16), a hand wheel (17), a lead screw (18), an angle adjusting frame (19), a connecting plate (20) and a lead screw base (21); the angle adjusting frame (19) is fixedly arranged on the machine base I (1), the connecting plate (20) is rotatably connected to the upper end of the angle adjusting frame (19) through a rotating shaft (22), and the lower end part of the connecting plate (20) is horizontally and fixedly connected with the machine base II (7); the lead screw base (21) is fixedly connected to the lower part of the angle adjusting frame (19) and is close to the lower end part of the connecting plate (20); the screw rod (18) is rotatably arranged in the screw rod base (21), one end of the screw rod is tightly attached to the connecting plate (20), and the other end of the screw rod is fixedly connected with the hand wheel (17); the angle ruler (16) is fixedly connected to the side end face of the angle adjusting frame (19); the pointer (15) is fixedly connected to the rotating shaft (22) and is positioned on the end face of the angle adjusting frame (19) with the angle ruler (16) on the same side.

5. The apparatus for evaluating the cut and puncture resistance of a laboratory compound according to claim 1, wherein: the sample fixing device comprises a sample fixing shaft (23), a sample clamping plate I (24), a sample clamping plate II (25) and a fastening device (26); the sample fixing shaft (23) is fixedly connected with the output end of the transmission device (9), and the sample clamping plate I (24) is arranged on the sample fixing shaft (23) and is positioned at one side close to the output end of the transmission device (9); the sample clamping plate II (25) is arranged on the sample fixing shaft (23) and is positioned on one side of the output end far away from the transmission device (9); the fastening device (26) is rotatably arranged at one outermost end of the sample fixing shaft (23).

6. The apparatus for evaluating the cut and puncture resistance of a laboratory compound according to claim 5, wherein: the sample fixing device further comprises a load calibration sensor (27); before the experiment, a load calibration sensor (27) is sleeved on a sample fixing shaft (23) and is fixedly installed through a sample clamping plate I (24), a sample clamping plate II (25) and a fastening device (26); the distance between the central point of the load calibration sensor (27) and the stress point is equal to the radius of the sample to be measured.