Dual-channel vertical bending fatigue testing machine for trailer axle

Abstract

The utility model belongs to the field of testing machines, and relates to detection of trailer axles, in particular to a two-channel vertical bending fatigue testing machine for trailer axles, which comprises a portal frame, the portal frame comprises a cross beam, a sliding rail is fixedly connected above the cross beam, the sliding rail is slidably connected with a sliding block, a hydraulic oil cylinder seat is fixedly connected above the sliding block, and the hydraulic oil cylinder seat is connected with a hydraulic oil cylinder. The hydraulic cylinder base is fixedly connected with a small hydraulic oil cylinder, the small hydraulic oil cylinder comprises a telescopic rod penetrating through the hydraulic oil cylinder base, the telescopic rod is fixedly connected with a supporting plate, the supporting plate is arranged above the hydraulic oil cylinder base, an upper positioning plate is arranged above the supporting plate, and the telescopic rod penetrates through the upper positioning plate; the upper positioning plate is fixedly connected with a supporting rod, the lower end of the supporting rod is fixedly connected with a lower positioning plate, the lower positioning plate is arranged below the cross beam, and the lower side of the lower positioning plate is fixedly connected with two servo actuators.

Description

Technical Field

[0001] This utility model belongs to the field of testing machines and relates to the testing of trailer axles, and more particularly to a dual-channel vertical bending fatigue testing machine for trailer axles. Background Technology

[0002] Application No. 202022538132.3 discloses an axle testing machine, including a lead screw and two shock absorbers threadedly connected to the lead screw. The two shock absorbers are pressed against both ends of the axle by a hydraulic cylinder. The distance between the two shock absorbers is adjusted by rotating the lead screw to facilitate testing axles of different lengths. In actual use, the lead screw will bear considerable pressure, which may cause it to deform. Even slight deformation makes rotation difficult, thus making adjusting the position of the two shock absorbers inconvenient. Utility Model Content

[0003] This invention addresses the problem of lead screws deforming under high pressure in existing technologies by providing a trailer axle dual-channel vertical bending fatigue testing machine that avoids the lead screw being subjected to reaction forces during testing.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a trailer axle dual-channel vertical bending fatigue testing machine, including a gantry frame, the gantry frame including a crossbeam, a slide rail fixedly connected above the crossbeam, a slider slidably connected to the slide rail, a hydraulic cylinder seat fixedly connected above the slider, a small hydraulic cylinder fixedly connected to the hydraulic cylinder seat, the small hydraulic cylinder including a telescopic rod passing through the hydraulic cylinder seat, a support plate fixedly connected to the telescopic rod, the support plate being positioned above the hydraulic cylinder seat, an upper positioning plate being positioned above the support plate, the telescopic rod passing through the upper positioning plate, a support rod fixedly connected to the upper positioning plate, a lower positioning plate fixedly connected to the lower end of the support rod, the lower positioning plate being positioned below the crossbeam, and two servo actuators fixedly connected to the lower side of the lower positioning plate.

[0005] Preferably, a screw is threadedly connected to the lower part of the hydraulic cylinder seat, and two screws are provided accordingly, with a coupling connecting the two screws. One of the screws is connected to a drive motor.

[0006] Preferably, a workpiece bracket is provided below the crossbeam.

[0007] Preferably, the workpiece bracket is also provided with a linear guide rail module on its side, and the linear guide rail module is connected with a baffle for overlapping with one end of the trailer axle.

[0008] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0009] This invention achieves this by sliding the upper positioning plate to the telescopic rod and placing the lower positioning plate below the crossbeam. This allows the reverse force generated during the servo actuator test to act on the lower side of the crossbeam, avoiding its action on the telescopic rod. Therefore, it prevents components with insufficient strength from deforming due to the reverse force.

[0010] The pallet of this utility model can support the upper positioning plate. Under the action of the telescopic rod restricting the horizontal movement of the upper positioning plate, the hydraulic cylinder seat can drive the upper positioning plate to move, that is, drive the servo actuator to move, and adjust the distance between the two servo actuators to adapt to trailer axles of different lengths. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a dual-channel vertical bending fatigue testing machine for trailer axles.

[0013] In the above figures, 1. Gantry frame; 11. Crossbeam; 12. Slide rail; 13. Hydraulic cylinder seat; 14. Small hydraulic cylinder; 15. Support plate; 16. Upper positioning plate; 17. Support rod; 18. Lower positioning plate; 19. Screw; 2. Servo actuator; 3. Drive motor; 4. Workpiece bracket; 5. Linear guide rail module; 51. Baffle. Detailed Implementation

[0014] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0015] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0016] like Figure 1As shown, the trailer axle dual-channel vertical bending fatigue testing machine includes a gantry frame 1. The gantry frame 1 includes a crossbeam 11. A slide rail 12 is fixedly connected above the crossbeam 11. A slider is slidably connected to the slide rail 12. A hydraulic cylinder seat 13 is fixedly connected above the slider. A small hydraulic cylinder 14 is fixedly connected to the hydraulic cylinder seat 13. The small hydraulic cylinder 14 includes a telescopic rod passing through the hydraulic cylinder seat 13. A support plate 15 is fixedly connected to the telescopic rod. The support plate 15 is positioned above the hydraulic cylinder seat 13. An upper positioning plate 16 is positioned above the support plate 15. The telescopic rod extends from... The upper positioning plate 16 passes through, allowing it to slide up and down along the telescopic rod. The upper positioning plate 16 is fixedly connected to a support rod 17, which is distributed on both sides of the crossbeam 11. The lower end of the support rod 17 is fixedly connected to a lower positioning plate 18, which is located below the crossbeam 11. A servo actuator 2 is fixedly connected to the lower side of the lower positioning plate 18. The servo actuator 2 serves as the power output component of the electro-hydraulic servo system. There are two servo actuators 2, including the hydraulic cylinder seat 13 and the servo actuator 2. The two servo actuators 2 can slide along the slide rail 12 respectively.

[0017] The method of using this utility model is as follows: When the telescopic rod drives the pallet 15 to overlap with the lower hydraulic cylinder seat 13, there is a gap between the lower positioning plate 18 and the lower side of the crossbeam 11. Therefore, the sliding of the hydraulic cylinder seat 13 can drive the servo actuator 2 to move. Adjust the gap between the two servo actuators 2 to adapt to trailer axles of different lengths. After the position adjustment is completed, the small hydraulic cylinder 14 pushes the pallet 15 and the upper positioning plate 16 to rise, so that the lower positioning plate 18 presses against the lower side of the crossbeam 11. Therefore, when the servo actuator 2 applies pressure to the trailer axle for testing, the crossbeam 11 provides support force, and the output pressure of the small hydraulic cylinder 14 is regulated by controlling the hydraulic pump station to prevent the slider from bearing excessive pressure.

[0018] Furthermore, a screw 19 is threadedly connected to the lower part of the hydraulic cylinder seat 13. Two screws 19 are correspondingly provided, and a coupling connects the two screws 19. One of the screws 19 is connected to the drive motor 3, and a support seat is rotatably connected to the end of the screw 19 to provide support force. The drive motor 3 drives the two screws 19 to rotate. The threads of the two screws 19 are in opposite directions, so the two hydraulic cylinder seats 13 and the two servo actuators 2 move closer or further away synchronously.

[0019] Furthermore, a workpiece bracket 4 is provided below the crossbeam 11. The workpiece bracket 4 is used to hold the trailer axle.

[0020] Furthermore, the workpiece bracket 4 is also equipped with a linear guide module 5 on its side. The linear guide module 5 is existing technology and will not be described in detail here. The linear guide module 5 is connected to a baffle 51 for overlapping with one end of the trailer axle. Since the two servo actuators 2 move closer or further away synchronously, the midpoint of the line connecting the two servo actuators 2 is fixed. Therefore, the center point of the trailer axle must be set below the midpoint of the upper line. The center point of the trailer axle is also fixed. To ensure proper placement, the position of the end of the trailer axle is calculated based on its length, so that the baffle 51 is moved to the corresponding position. When placing the trailer axle, one end of it rests against the baffle 51, so that the center point of the trailer axle is exactly below the midpoint of the upper line.

[0021] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A dual-channel vertical bending fatigue testing machine for trailer axles, comprising a gantry frame, wherein the gantry frame includes a crossbeam, characterized in that, A slide rail is fixedly connected above the crossbeam, and a slider is slidably connected to the slide rail. A hydraulic cylinder seat is fixedly connected above the slider, and a small hydraulic cylinder is fixedly connected to the hydraulic cylinder seat. The small hydraulic cylinder includes a telescopic rod passing through the hydraulic cylinder seat. A support plate is fixedly connected to the telescopic rod, and the support plate is positioned above the hydraulic cylinder seat. An upper positioning plate is positioned above the support plate, and the telescopic rod passes through the upper positioning plate. A support rod is fixedly connected to the upper positioning plate, and a lower positioning plate is fixedly connected to the lower end of the support rod. The lower positioning plate is positioned below the crossbeam, and two servo actuators are fixedly connected to the lower side of the lower positioning plate.

2. The trailer axle dual-channel vertical bending fatigue testing machine according to claim 1, characterized in that, A screw is threadedly connected to the lower part of the hydraulic cylinder seat. Two screws are provided and a coupling is connected between the two screws. One of the screws is connected to a drive motor.

3. The trailer axle dual-channel vertical bending fatigue testing machine according to claim 2, characterized in that, A workpiece bracket is provided below the crossbeam.

4. The trailer axle dual-channel vertical bending fatigue testing machine according to claim 3, characterized in that, The workpiece bracket is also provided with a linear guide rail module on its side, and the linear guide rail module is connected to a baffle for overlapping with one end of the trailer axle.

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