Mechanical spring fatigue testing machine

Abstract

The utility model discloses a mechanical spring fatigue testing machine, which relates to the field of fatigue testing and comprises an equipment platform, a lower circular plate is fixedly connected to the middle of the upper surface of the equipment platform, an adjusting mechanism is arranged on the upper surface of the lower circular plate and comprises radial sliding grooves, and the radial sliding grooves are formed in the upper surface of the lower circular plate in a circumferential array mode. The radial sliding grooves are connected with radial adjusting columns in a sliding mode, an upper disc is arranged above the lower round plate, radial sliding through holes are formed in the circumference of the upper disc in an array mode, and the radial adjusting columns penetrate through the radial sliding through holes. The device has the beneficial effects that a rack is pushed to move horizontally by adopting the extension of a hydraulic cylinder to drive an adjusting disc to rotate, and due to radial sliding limiting of a radial sliding groove and a radial sliding through hole, an arc-shaped through hole drives a radial adjusting column to generate radial adjustment, so that springs are prevented from bending during compression detection when the radial adjusting column is sleeved with the springs with different diameters; local material fatigue of the spring material is prevented, so that the test structure is more accurate.

Description

Technical Field

[0001] The utility model relates to the field of fatigue testing, in particular to a mechanical spring fatigue testing machine. Background Art

[0002] The spring fatigue testing machine is composed of a motor, a reducer, and a cam connected to drive the connecting rod to do reciprocating motion to achieve compression movement of the spring.

[0003] For example, the patent document with the announcement number CN216899514U discloses a mechanical spring fatigue testing machine. During the test, the spring limit device is set to a fixed size to ensure that the spring will not pop out and injure people. However, if the spring diameter does not match, it is easy to cause local bending of the spring and local material fatigue, affecting the accuracy of the test results. Utility Model Content

[0004] The purpose of the utility model is to provide a mechanical spring fatigue testing machine in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A mechanical spring fatigue testing machine comprises an equipment platform, a lower circular plate is fixedly connected to the middle of the upper surface of the equipment platform, an adjustment mechanism is arranged on the upper surface of the lower circular plate, the adjustment mechanism comprises a radial slide groove, a circumferential array of radial slide grooves is arranged on the upper surface of the lower circular plate, a radial adjustment column is slidably connected to the radial slide groove, an upper disc is arranged above the lower circular plate, a circumferential array of the upper disc is arranged, the radial adjustment column passes through the radial sliding through hole, a spring is sleeved on the outer side of the radial adjustment column, two radial adjustment components are arranged on the upper side of the lower circular plate and the upper side of the upper disc, a power component is arranged on the front side of the radial adjustment component, a lifting mechanism is arranged above the adjustment mechanism, and a testing mechanism is arranged on one side of the upper disc.

[0007] Preferably, the radial adjustment assembly includes an adjustment disc, an arc-shaped through hole is opened in a circular array of the adjustment disc, the edge of the adjustment disc is fixedly connected with teeth, the radial adjustment column passes through the arc-shaped through hole, the upper adjustment disc is connected to the lifting mechanism, and the lower adjustment disc is rotatably connected to the lower circular plate.

[0008] Preferably, the power assembly includes two connecting columns, the upper and lower ends of the connecting columns are fixedly connected with racks, the racks mesh with teeth, the lower rack is slidably connected with a sleeve, the sleeve is fixedly connected to the upper surface of the equipment platform, and the connecting column on one side is fixedly connected with a hydraulic cylinder, and the other end of the hydraulic cylinder is fixedly connected to the upper surface of the equipment platform.

[0009] Preferably, the lifting mechanism includes a top plate, one end of the top plate is fixedly connected to an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected to the equipment platform, the other end of the top plate is slidably connected to a sliding column, the bottom end of the sliding column is fixedly connected to the equipment platform, the middle part of the upper adjustment disk is rotatably connected to a cylinder, and the top end of the cylinder is fixedly connected to the lower surface of the top plate.

[0010] Preferably, the test mechanism includes a side plate 1, which is fixedly connected to both sides of the upper disc, and one side plate 1 is fixedly connected to a sliding vertical plate, which is slidably connected to one end of an L-shaped plate, and the other end of the L-shaped plate is fixedly connected to the top plate, and the side plate 1 on the other side is slidably connected to a sliding column.

[0011] Preferably, the test mechanism further comprises a motor, the output shaft of the motor is fixedly connected to an eccentric disk, the edge of the eccentric disk is rotatably connected to a connecting rod, and the other end of the connecting rod is hinged to the top end of the sliding vertical plate.

[0012] The beneficial effect is that the extension and contraction of the hydraulic cylinder is used to push the rack to move horizontally, thereby driving the rotation of the adjusting disc. Due to the radial sliding limit of the radial slide groove and the radial sliding through hole, the arc-shaped through hole drives the radial adjusting column to produce radial adjustment, so that when the radial adjusting column is sleeved with springs of different diameters, the spring is prevented from bending during compression testing, local material fatigue of the spring material is prevented, and the test structure is more accurate.

[0013] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0015] Figure 1 It is a first schematic diagram of a mechanical spring fatigue testing machine described in the utility model;

[0016] Figure 2 This is a mechanical spring fatigue testing machine described in the utility model. Figure 1 Partial parts drawing;

[0017] Figure 3 It is a second schematic diagram of a mechanical spring fatigue testing machine described in the utility model;

[0018] Figure 4 It is a schematic diagram of a radial adjustment component of a mechanical spring fatigue testing machine described in the utility model.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Equipment platform; 2. Lower circular plate; 301. Adjusting disc; 302. Arc-shaped through hole; 303. Teeth; 304. Rack; 305. Connecting column; 306. Sliding sleeve; 307. Hydraulic cylinder; 308. Radial slide groove; 309. Radial adjusting column; 310. Upper circular plate; 311. Radial sliding through hole; 401. Side plate 1; 402. Sliding vertical plate; 403. Connecting rod; 404. Eccentric circular plate; 405. Motor; 406. L-shaped plate; 501. Electric telescopic rod; 502. Top plate; 503. Sliding column; 504. Cylinder; 6. Spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0023] The utility model is further described below in conjunction with the accompanying drawings:

[0024] like Figure 1 - Figure 4 As shown, a mechanical spring fatigue testing machine comprises an equipment platform 1, a lower circular plate 2 is fixedly connected to the middle of the upper surface of the equipment platform 1, an adjustment mechanism is arranged on the upper surface of the lower circular plate 2, the adjustment mechanism comprises a radial slide groove 308, a circumferential array of radial slide grooves 308 is opened on the upper surface of the lower circular plate 2, a radial adjustment column 309 is slidably connected to the radial slide groove 308, an upper disk 310 is arranged above the lower circular plate 2, a circumferential array of radial sliding holes 311 is opened on the upper disk 310, the radial adjustment column 309 passes through the radial sliding holes 311, a spring 6 is sleeved on the outer side of the radial adjustment column 309, two radial adjustment components are arranged on the upper side of the lower circular plate 2 and the upper side of the upper disk 310, a power component is arranged on the front side of the radial adjustment component, a lifting mechanism is arranged above the adjustment mechanism, and a test mechanism is arranged on one side of the upper disk 310.

[0025] The lower circular plate 2 is used to open a radial groove 308, and the upper circular plate 310 is used to open a radial sliding hole 311. The radial groove 308 and the radial sliding hole 311 provide a sliding limit function for the radial adjustment column 309. The radial adjustment assembly is used to adjust the spacing of the connecting columns 305. Different spacings are adjusted by the connecting columns 305 to prevent the bending of springs 6 of different diameters during testing. The power assembly is used to adjust the rotation of the radial adjustment group.

[0026] The radial adjustment component includes an adjustment disk 301, which has an arc-shaped through hole 302 in a circumferential array. The edge of the adjustment disk 301 is fixedly connected with teeth 303, and a radial adjustment column 309 passes through the arc-shaped through hole 302. The upper adjustment disk 301 is connected to the lifting mechanism, and the lower adjustment disk 301 is rotatably connected to the lower circular plate 2.

[0027] The adjusting disc 301 is used to open an arc-shaped through hole 302. Under the rotation of the adjusting disc 301, the arc-shaped through hole 302 drives the spacing adjustment of the radial adjusting column 309. The teeth 303 are used to connect the power component.

[0028] The power assembly includes two connecting columns 305, and the upper and lower ends of the connecting columns 305 are fixedly connected with racks 304, the racks 304 mesh with the teeth 303, and the lower rack 304 is slidably connected with a sleeve 306, and the sleeve 306 is fixedly connected to the upper surface of the equipment platform 1. The connecting column 305 on one side is fixedly connected with a hydraulic cylinder 307, and the other end of the hydraulic cylinder 307 is fixedly connected to the upper surface of the equipment platform 1.

[0029] The connecting column 305 is used to connect the two racks 304 to maintain the synchronous movement of the two racks 304. The rack 304 drives the rotation of the adjustment disk 301 through the teeth 303. The sliding sleeve 306 is used to maintain the sliding direction of the rack 304. The hydraulic cylinder 307 controls the horizontal movement of the rack 304 through its own extension and contraction.

[0030] The lifting mechanism includes a top plate 502, one end of which is fixedly connected to an electric telescopic rod 501, the bottom end of which is fixedly connected to an equipment platform 1, the other end of the top plate 502 is slidably connected to a sliding column 503, the bottom end of which is fixedly connected to the equipment platform 1, and the middle part of the upper adjustment disk 301 is rotatably connected to a cylinder 504, the top end of which is fixedly connected to the lower surface of the top plate 502.

[0031] The electric telescopic rod 501 is used to control the height of the top plate 502, the top plate 502 is used to install the test mechanism and the cylinder 504, the cylinder 504 is used to rotate the adjustment disk 301 connected to the upper side, and the sliding column 503 is used to maintain the stability of the top plate 502 when it is raised and lowered.

[0032] The test mechanism includes a side plate 401, which is fixedly connected to both sides of the upper disc 310. The side plate 401 on one side is fixedly connected to a sliding vertical plate 402. The sliding vertical plate 402 is slidably connected to one end of an L-shaped plate 406. The other end of the L-shaped plate 406 is fixedly connected to the top plate 502. The side plate 401 on the other side is slidably connected to a sliding column 503.

[0033] The side plates 401 are arranged on both sides of the upper disc 310 , and are used for slidably connecting the sliding column 503 and fixedly connecting the sliding vertical plate 402 . The L-shaped plate 406 is used for installing the motor 405 and slidably connecting the sliding vertical plate 402 .

[0034] The test mechanism also includes a motor 405 , the output shaft of the motor 405 is fixedly connected to an eccentric disc 404 , the edge of the eccentric disc 404 is rotatably connected to a connecting rod 403 , and the other end of the connecting rod 403 is hinged to the top of the sliding vertical plate 402 .

[0035] The motor 405 provides rotational power to drive the eccentric disc 404 to rotate, the eccentric disc 404 drives the connecting rod 403 to rise and fall, the connecting rod 403 drives the sliding vertical plate 402 to rise and fall, and finally drives the upper disc 310 to compress and release the spring 6 through the side plate 401, thereby realizing fatigue monitoring of the spring 6.

[0036] Working principle: The rack 304 is moved by the extension and retraction of the hydraulic cylinder 307, so that the disc 301 rotates, and the arc-shaped through hole 302 in the adjusting disc 301 drives the radial adjusting column 309 to slide close to the center of the circle in the diameter direction. After the spring 6 is sleeved on the outer side of the radial adjusting column 309, the electric telescopic rod 501 is started to lower the height of the top plate 502. The cylinder 504 drives the adjusting disc 301 to descend, and the top plate 502 drives the test mechanism to descend.

[0037] When the upper teeth 303 and the rack 304 are meshed, the top plate 502 stops descending, and the hydraulic cylinder 307 is started to push the rack 304 to move horizontally, driving the adjusting disk 301 to rotate, and the radial adjusting column 309 gradually moves outward and contacts the inside of the spring 6. The radial adjusting column 309 limits the spring 6 to prevent the spring 6 from bending.

[0038] Start the motor 405, which drives the eccentric disk 404 to rotate, and drives the sliding vertical plate 402 to rise and fall through the connecting rod 403. The sliding vertical plate 402 drives the upper disk 310 to compress the spring. At the same time, as the eccentric disk 404 rotates, it also drives the connecting rod 403 to rise, and finally completes the repeated compression of the spring 6, realizing the fatigue test of the spring 6.

[0039] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical spring fatigue testing machine, comprising an equipment platform (1), a lower circular plate (2) being fixedly connected to the middle of the upper surface of the equipment platform (1), characterized in that: An adjustment mechanism is provided on the upper surface of the lower circular plate (2), the adjustment mechanism comprising a radial slide groove (308), the radial slide groove (308) being arranged in a circumferential array on the upper surface of the lower circular plate (2), the radial slide groove (308) being slidably connected with a radial adjustment column (309), an upper disk (310) being provided above the lower circular plate (2), the upper disk (310) being arranged in a circumferential array with radial sliding through holes (311), the radial adjustment column (309) passing through the radial sliding through holes (311), a spring (6) being sleeved on the outer side of the radial adjustment column (309), two radial adjustment components being provided on the upper side of the lower circular plate (2) and the upper side of the upper disk (310), a power component being provided on the front side of the radial adjustment component, a lifting mechanism being provided above the adjustment mechanism, and a test mechanism being provided on one side of the upper disk (310).

2. A mechanical spring fatigue testing machine according to claim 1, characterized in that: The radial adjustment component comprises an adjustment disc (301), the adjustment disc (301) has arc-shaped through holes (302) arranged in a circumferential array, the edge of the adjustment disc (301) is fixedly connected with teeth (303), the radial adjustment column (309) passes through the arc-shaped through holes (302), the upper adjustment disc (301) is connected to a lifting mechanism, and the lower adjustment disc (301) is rotatably connected to the lower circular plate (2).

3. A mechanical spring fatigue testing machine according to claim 2, characterized in that: The power assembly comprises two connecting columns (305), the upper and lower ends of the connecting columns (305) are fixedly connected to racks (304), the racks (304) mesh with the teeth (303), the lower racks (304) are slidably connected to a sleeve (306), the sleeve (306) is fixedly connected to the upper surface of the equipment platform (1), and the connecting column (305) on one side is fixedly connected to a hydraulic cylinder (307), the other end of the hydraulic cylinder (307) is fixedly connected to the upper surface of the equipment platform (1).

4. A mechanical spring fatigue testing machine according to claim 2, characterized in that: The lifting mechanism comprises a top plate (502), one end of the top plate (502) is fixedly connected to an electric telescopic rod (501), the bottom end of the electric telescopic rod (501) is fixedly connected to the equipment platform (1), the other end of the top plate (502) is slidably connected to a sliding column (503), the bottom end of the sliding column (503) is fixedly connected to the equipment platform (1), and the middle part of the upper adjustment disc (301) is rotatably connected to a cylinder (504), and the top end of the cylinder (504) is fixedly connected to the lower surface of the top plate (502).

5. A mechanical spring fatigue testing machine according to claim 4, characterized in that: The test mechanism comprises a side plate (401), wherein the side plate (401) is fixedly connected to two sides of the upper disc (310), wherein the side plate (401) on one side is fixedly connected to a sliding vertical plate (402), wherein the sliding vertical plate (402) is slidably connected to one end of an L-shaped plate (406), wherein the other end of the L-shaped plate (406) is fixedly connected to the top plate (502), and the side plate (401) on the other side is slidably connected to the sliding column (503).

6. A mechanical spring fatigue testing machine according to claim 5, characterized in that: The test mechanism further comprises a motor (405), the output shaft of the motor (405) being fixedly connected to an eccentric disc (404), the edge of the eccentric disc (404) being rotatably connected to a connecting rod (403), and the other end of the connecting rod (403) being hinged to the top end of the sliding vertical plate (402).

Images