Wheel rim crushing test device

Abstract

The utility model discloses a wheel rim crushing testing device, which comprises an upper beam, a round upright post, an actuating cylinder, an upper pressing plate and a base, the upper beam and the base are vertically arranged in a spaced mode, the bottoms of the left and right round stand columns are vertically fixed to the base, the upper portions of the round stand columns are connected with an upper beam lead screw, an oil tank and an actuating cylinder are installed on the upper beam, and the actuating cylinder drives a telescopic lever at the front end of the actuating cylinder according to hydraulic power provided by the oil tank so as to drive an upper pressing plate connected to the front end of the telescopic lever to move downwards. According to the device, the deformation and damage process of the wheel is recorded through the high-speed camera, load and displacement real-time recorded data are analyzed, and effective technical support and test means are provided for improving the design of the weak position of the wheel and comprehensively evaluating the safety performance of the wheel.

Description

Technical Field

[0001] The utility model relates to the application field of wheel testing devices, in particular to a wheel rim crushing testing device. Background Art

[0002] The utility model is used to evaluate the static radial strength and safety performance of a wheel when the wheel rim is subjected to radial extrusion force. The static radial strength of a wheel is an important indicator for examining the yield deformation of a wheel when subjected to external force extrusion. By recording the deformation and damage process of the wheel with a high-speed camera and analyzing the real-time recorded data of load and displacement, effective technical support and testing means are provided for improving the design of weak positions of the wheel and comprehensively evaluating the safety performance of the wheel. Utility Model Content

[0003] The utility model aims to propose a wheel rim crushing test device, which, while meeting the requirements for wheel testing methods and data science, proposes a new type of testing device, which has many advantages, such as the wheel can be fixedly installed during the test, the loading load is accurately positioned, the data recording and calculation are convenient and fast, the data are visually recorded, and the device is mature and commercializable.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A wheel rim crushing test device comprises an upper beam, a round column, an actuator cylinder, an upper pressure plate and a base;

[0006] The upper beam and the base are spaced apart in an upper and lower manner, the bottoms of the left and right round columns are vertically fixed on the base, the upper part of the round columns is connected to the upper beam lead screw, an oil tank and an actuator cylinder are installed on the upper beam, and the actuator cylinder drives the telescopic lever at its front end according to the hydraulic power provided by the oil tank, thereby driving the upper pressure plate connected to the front end of the telescopic lever to move downward, and the upper pressure plate is pressed down on the wheel, so that it can achieve test destructive deformation.

[0007] Preferably, a magnetic switch is installed at the lower end of the upper beam, and a magnetic block is installed on the inner side of a circular column. The magnetic switch and the magnetic block are used in combination. When the upper beam descends to the lower limit position of the screw, the magnetic switch and the magnetic block attract each other, triggering the magnetic switch to start, thereby cutting off power to the entire device and protecting the upper beam of the entire device from falling out of the allowable working range of the screw.

[0008] Preferably, a load sensor and a connecting plate are installed between the lever and the upper pressing plate. The load sensor is used to measure the downward pressure load on the wheel, and the connecting plate is used to connect the load sensor and the upper pressing plate.

[0009] Preferably, a high-speed camera is also installed at the lower end of the upper beam to record the deformation and damage test process of the wheel.

[0010] Preferably, the actuator cylinder is installed with a down-stroke switch and an up-stroke switch to protect the movable range of the lever in the actuator cylinder from being out of the cylinder or pushed into the cylinder. The actuator cylinder can also provide feedback on the telescopic displacement of the lever.

[0011] Preferably, the wheel is fixedly mounted on the connecting flange by bolt connection. The connecting flange is provided with bolt holes whose specifications are consistent with those of the bolt holes of the wheel. The connecting flange is fixedly mounted on the wheel fixing base with a mounting plate by using fixing bolts. The connecting flange and the mounting plate are a slot connection structure so that the connecting flange can be rotated at any position along the contact surface on the mounting plate. The method of use is: after installing the wheel on the connecting flange, the connecting flange and the mounting plate are not tightened with fixing bolts first, and the position of the wheel is rotated to determine the initial position of the initial contact between the wheel and the upper pressure plate and then the fixing bolts are tightened.

[0012] Preferably, the mounting plate is welded and fixed on the horizontal column, the center of the mounting plate should be aligned with the axis of the horizontal column, the vertical column and the horizontal column are fixed together vertically and crosswise using a square sleeve, and the square sleeve is provided with fixing bolts. After loosening the bolts, the vertical column and the horizontal column can be adjusted vertically and horizontally up and down, thereby adjusting the initial installation position of the wheel. The wheel is made to contact the bottom plate through adjustment, and the vertical column avoids the up and down movable range of the upper pressure plate.

[0013] Preferably, the vertical column is vertically welded and fixed on the wheel fixing base, and the wheel fixing base is fixed on the base at any position by using a combination of a support screw, an adjusting screw and a pressure plate. T-slots that are staggered horizontally, vertically and vertically are evenly distributed on the base, and the bottom end of the support screw is fixed in the T-slot using a T-block.

[0014] Preferably, a guardrail with pulleys is used to provide safety protection for the entire device.

[0015] Preferably, a motor is installed on the upper beam, and a chain gear transmission structure is formed inside the upper beam and the motor. The round column provides load-bearing support for the upper beam, and one section of the round column is a screw structure. The motor drives the upper beam to move up and down on the screw, thereby adjusting the initial installation position of the wheel.

[0016] The utility model has the following beneficial effects:

[0017] 1. By setting up double circular columns and double screw structures, the upper beam is ensured to be supported by a stable load, thus stabilizing the frame structure of the entire device;

[0018] 2. By providing a wheel fixing base with an adjustable wheel mounting position, the force on the wheel during the downward pressing process is ensured to be stable;

[0019] 3. Set up a high-speed camera to record the wheel deformation and damage process in real time for subsequent design and analysis of wheel weak points;

[0020] 4. Set up guardrails to prevent wheel fragments from flying out and injuring people. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the main assembly view of the utility model.

[0022] Figure 2 It is a partial schematic diagram of the side view of the rim installation of the utility model.

[0023] Figure 3 This is a test load and displacement curve diagram of the utility model.

[0024] In the figure: 1. upper beam; 2. motor; 3. oil tank; 4. high-speed camera; 5. round column; 51. lead screw; 52. magnetic switch; 53. magnetic block; 6. guardrail; 61. pulley; 7. actuator; 71. cylinder rod; 72. lower stroke switch; 73. upper stroke switch; 8. load sensor; 9. connecting plate; 10. upper pressure plate; 11. wheel; 12. connecting flange; 13. fixing bolt; 14. bottom plate; 15. mounting plate; 16. vertical column; 17. square sleeve; 18. horizontal column; 191. support screw; 192. adjusting screw; 193. pressure plate; 20. wheel fixing base; 21. base. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-3 As shown, a wheel rim crushing test device of an embodiment of the present application includes an upper beam 1, on which a motor 2 is installed, and the interior of the upper beam 1 and the motor 2 form a chain gear transmission structure, and the upper beam 1 spans through two vertically and parallel circular columns 5, and the circular columns 5 provide load-bearing support for the upper beam 1. A section of the circular column 5 is a lead screw 51 structure, so that the upper beam 1 can be driven and controlled by the motor 2 to move up and down on the lead screw 51, thereby adjusting a suitable initial installation position of the wheel 11.

[0027] In one embodiment of the present application, a magnetic switch 52 is installed at the lower end of the upper beam 1, and a magnetic block 53 is installed on the inner side of a circular column 5. The magnetic switch 52 and the magnetic block 53 are used in combination. The principle is that when the upper beam 1 descends to the lower limit position of the screw 51, the magnetic switch 52 and the magnetic block 53 are attracted to each other, triggering the magnetic switch 52 to start, so that the entire device is powered off, protecting the upper beam 1 of the entire device from escaping from the allowable working range of the screw 51.

[0028] In one embodiment of the present application, an oil tank 3 and an actuator cylinder 7 are also installed on the upper beam 1. The actuator cylinder 7 drives the telescopic lever 71 according to the hydraulic power provided by the oil tank 3, thereby driving the upper pressure plate 10 to move downward. The upper pressure plate 10 is pressed down onto the wheel 11 so that it can achieve test destructive deformation. A load sensor 8 and a connecting plate 9 are also installed between the lever 71 and the upper pressure plate 10. The load sensor 8 is used to measure the downward pressure load on the wheel 11. The function of the connecting plate 9 is to connect the load sensor 8 and the upper pressure plate 10. The shape and size of the upper pressure plate 10 can be changed according to different test requirements. A flat plate test method is described in this article, and the load sensor 8 transmits the test signal through a data connection.

[0029] In one embodiment of the present application, a high-speed camera 4 is also installed at the lower end of the upper beam 1 to record the deformation and damage test process of the wheel 11 .

[0030] In one embodiment of the present application, a lower travel switch 72 and an upper travel switch 73 are installed on the actuator cylinder 7 to protect the movable range of the lever 71 in the actuator cylinder 7 from being out of the cylinder or pushing up the cylinder. The actuator cylinder 7 can also provide feedback on the telescopic displacement of the lever 71.

[0031] In one embodiment of the present application, the wheel 11 is fixedly mounted on the connecting flange 12 by bolt connection. The connecting flange 12 is provided with bolt holes, and its specifications are consistent with the specifications of the bolt holes of the wheel 11. The connecting flange 12 is fixedly mounted on the wheel fixing base 20 with the mounting plate 15 using fixing bolts 13. The connecting flange 12 and the mounting plate 15 are a card slot connection structure so that the connecting flange 12 can rotate at any position along the contact surface on the mounting plate 15. The method of use is to install the wheel 11 on the connecting flange 12, and then tighten the connecting flange 12 and the mounting plate 15 without using the fixing bolts 13. After rotating the position of the wheel 11 to determine the initial position of the initial contact between the wheel 11 and the upper pressure plate 10, the fixing bolts 13 are tightened.

[0032] In one embodiment of the present application, the mounting plate 15 is welded and fixed on the horizontal column 18, and the center of the mounting plate 15 should be aligned with the axis of the horizontal column 18. The vertical column 16 and the horizontal column 18 are vertically cross-fixed together using a square sleeve 17. There are fixing bolts on the square sleeve 17. After loosening the bolts, the vertical column 16 and the horizontal column 18 can be adjusted vertically and horizontally up and down, thereby adjusting the initial installation position of the wheel 11. The wheel 11 is made to contact the bottom plate 14 through adjustment, and the vertical column 16 avoids the up and down movable range of the upper pressure plate 10.

[0033] In one embodiment of the present application, the vertical column 16 is vertically welded and fixed on the wheel fixing base 20, and the wheel fixing base 20 is fixed at any position on the base 21 by using a combination of a support screw 191, an adjustment screw 192 and a pressure plate 193. The base 21 is evenly distributed with T-slots that are staggered horizontally, vertically and vertically, and the bottom end of the support screw 191 is fixed in the T-slot using a T-block.

[0034] In one embodiment of the present application, a guardrail 6 with a pulley 61 is used to provide safety protection for the entire device.

[0035] The operating method of the wheel rim crushing test device of the present application is as follows:

[0036] 1. Start the motor, adjust the upper beam to the appropriate wheel installation position, install the wheel and fix the wheel fixing base;

[0037] 2. Start the actuator to drive the upper platen down toward the wheel, and keep the lever extension loading rate of the actuator at 20 mm / min ± 2.5 mm / min until it contacts the sample;

[0038] 3. Apply a preload of 275N±50N and clear the load and displacement values ​​of the equipment;

[0039] 4. To ensure the safety of the testing process, set up protective fences.

[0040] 5. Apply load to the wheel until the load on the wheel reaches its peak, and continue to move the upper pressure plate 13mm toward the wheel to ensure that there is no secondary load peak;

[0041] 6. The condition for determining whether the load on the wheel reaches its peak value is that after the wheel is deformed due to extrusion damage, the load value does not increase as the displacement continues to increase;

[0042] 7. Stop applying load and unload.

[0043] It should be stated that the above utility model content and specific implementation methods are intended to demonstrate the practical application of the technical solution provided by the utility model and should not be interpreted as limiting the protection scope of the utility model. Those skilled in the art can make various modifications, equivalent substitutions or improvements within the spirit and principle of the utility model. The protection scope of the utility model shall be subject to the attached claims.

Claims

1. A wheel rim crushing test device, characterized in that: It comprises an upper beam (1), a round column (5), an actuator cylinder (7), an upper pressing plate (10) and a base (21); The upper beam (1) and the base (21) are arranged at intervals in the upper and lower parts. The bottoms of the two left and right circular columns (5) are vertically fixed on the base (21). The upper parts of the circular columns (5) are connected to the upper beam (1) by a screw rod. The upper beam (1) is equipped with an oil tank (3) and an actuating cylinder (7). The actuating cylinder (7) drives the telescopic lever (71) at its front end according to the hydraulic power provided by the oil tank (3), thereby driving the upper pressing plate (10) connected to the front end of the telescopic lever (71) to move downward. The upper pressing plate (10) is pressed down onto the wheel (11), so that the wheel (11) can be tested for destructive deformation.

2. A wheel rim crushing test device according to claim 1, characterized in that: A magnetic switch (52) is installed at the lower end of the upper beam (1), and a magnetic block (53) is installed on the inner side of a circular column (5). The magnetic switch (52) and the magnetic block (53) are used in combination. When the upper beam (1) descends to the lower limit position of the lead screw (51), the magnetic switch (52) and the magnetic block (53) are attracted to each other, triggering the magnetic switch (52) to start, so that the entire device is powered off, thereby protecting the upper beam (1) of the entire device from falling out of the allowable working range of the lead screw (51).

3. A wheel rim crushing test device according to claim 1, characterized in that: A load sensor (8) and a connecting plate (9) are also installed between the telescopic lever (71) and the upper pressing plate (10). The load sensor (8) is used to measure the downward pressure load on the wheel (11), and the connecting plate (9) is used to connect the load sensor (8) and the upper pressing plate (10).

4. A wheel rim crushing test device according to claim 1, characterized in that: A high-speed camera (4) is also installed at the lower end of the upper beam (1) for recording the deformation and damage test process of the wheel (11).

5. The wheel rim crushing test device according to claim 3, characterized in that: The actuator cylinder (7) is provided with a lower travel switch (72) and an upper travel switch (73) for protecting the telescopic lever (71) from slipping out of the cylinder or pushing up the cylinder within the range of motion in the actuator cylinder (7). The actuator cylinder (7) can also provide feedback on the telescopic displacement of the telescopic lever (71).

6. A wheel rim crushing test device according to any one of claims 1 to 3, characterized in that: The wheel (11) is fixedly mounted on the connecting flange (12) by bolt connection. The connecting flange (12) has bolt holes, and the specifications of the bolt holes are consistent with those of the bolt holes of the wheel (11). The connecting flange (12) is fixedly mounted on the wheel fixing base (20) with the mounting plate (15) by using fixing bolts (13). The connecting flange (12) and the mounting plate (15) are a slot connection structure so that the connecting flange (12) can be rotated at any position along the contact surface on the mounting plate (15). The method of use is as follows: after the wheel (11) is mounted on the connecting flange (12), the connecting flange (12) and the mounting plate (15) are first tightened without using the fixing bolts (13), and the position of the wheel (11) is rotated to determine the initial position of the initial contact between the wheel (11) and the upper pressure plate (10), and then the fixing bolts (13) are tightened.

7. The wheel rim crushing test device according to claim 5, characterized in that: The mounting plate (15) is welded and fixed on the horizontal column (18), and the center of the mounting plate (15) should be aligned with the axis of the horizontal column (18). The vertical column (16) and the horizontal column (18) are vertically cross-fixed together using a square sleeve (17). The square sleeve (17) is provided with fixing bolts. After the bolts are loosened, the vertical column (16) and the horizontal column (18) can be adjusted vertically and horizontally, thereby adjusting the initial installation position of the wheel (11). By adjusting, the wheel (11) is in contact with the bottom plate (14), and the vertical column (16) avoids the upper and lower movable range of the upper pressing plate (10).

8. The wheel rim crushing test device according to claim 6, characterized in that: The vertical column (16) is vertically welded and fixed on the wheel fixing base (20). The wheel fixing base (20) is fixed on the base (21) at any position by combining a support screw (191), an adjustment screw (192) and a pressure plate (193). The base (21) is evenly distributed with T-shaped grooves that are staggered in horizontal and vertical directions. The bottom end of the support screw (191) is fixed in the T-shaped groove using a T-shaped block.

9. The wheel rim crushing test device according to claim 1, characterized in that: A guardrail (6) with a pulley (61) is used to provide safety protection for the entire device.

10. The wheel rim crushing test device according to claim 1, characterized in that: The motor (2) is installed on the upper beam (1), and the upper beam (1) and the motor (2) form a chain gear transmission structure. The round column (5) provides load support for the upper beam (1), and a section of the round column (5) is a lead screw (51) structure. The motor (2) drives and controls the upper beam (1) to move up and down on the lead screw (51), thereby adjusting the initial installation position of the wheel (11).

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