CN217276847U

CN217276847U - Reciprocating rotary type fatigue test tool

Info

Publication number: CN217276847U
Application number: CN202221090102.3U
Authority: CN
Inventors: 熊其平; 韩山强
Original assignee: Chongqing Guoyu Technology Co ltd
Current assignee: Chongqing Guoyu Technology Co ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-08-23
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a reciprocal rotary type fatigue test frock, including rotating the horizontal main shaft of connecting, the one end of horizontal main shaft is provided with work piece holder, the other end of horizontal main shaft is provided with the swing arm, the swing arm passes through the output shaft transmission of link gear and motor and is connected, works as when the motor starts, work piece holder can follow the reciprocal rotation of horizontal main shaft. An object of the utility model is to provide a reciprocal rotary type fatigue test frock can independently carry out fatigue test to the air spring seat of honour earlier stage at air spring shock absorber assembly, is favorable to reducing the fault rate of assembly back air spring shock absorber assembly.

Description

Reciprocating rotary type fatigue test tool

Technical Field

The utility model relates to a technical field that work piece quality detected particularly, relates to a reciprocal rotary type fatigue test frock.

Background

With the development of economy and the improvement of living standard, people have higher requirements on the speed, safety and comfort of vehicles. The air spring shock absorber has the characteristics of light weight, good vibration isolation and noise elimination effects on high-frequency excitation vibration, high bearing capacity, nonlinear rigidity and the like, and is widely applied to various vehicles.

The prior art air spring damper generally comprises a cylinder barrel structure, a piston rod arranged in the cylinder barrel structure, an air spring lower seat arranged on the outer side wall of the cylinder barrel structure, an air spring upper seat arranged at the upper end of the piston rod, and an air bag arranged between the air spring upper seat and the air spring lower seat.

In order to check whether the air spring shock absorber is qualified, a fatigue test is required to be carried out on the air spring shock absorber. At present, a fatigue test machine tool in the industry can only test an assembled air spring shock absorber assembly (such as Chinese patent applications 201610516686.9 and 201710677408.6), and before assembly, equipment for independently testing an air spring upper seat supplied by a matching manufacturer is rarely recorded. During actual production, the air spring upper seat of the air spring shock absorber assembly can only depend on artificial mathematical calculation parameters, finite element analysis software and industry experience for evaluation in the early stage of assembly, and the failure period of the part cannot be truly and reliably reflected, so that the failure rate of the assembled air spring shock absorber assembly is directly increased, and the production cost of a host factory is increased.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a reciprocal rotary type fatigue test frock can independently carry out fatigue test to this part of air spring seat of honour earlier in air spring shock absorber assembly package, is favorable to reducing the fault rate of assembly back air spring shock absorber assembly.

In order to achieve the above object, the utility model adopts the following specific technical scheme:

the utility model provides a reciprocal rotary type fatigue test frock, its key lies in, including rotating horizontal main shaft (3) of connecting, the one end of horizontal main shaft (3) is provided with work piece holder (4), the other end of horizontal main shaft (3) is provided with swing arm (5), swing arm (5) are connected through the output shaft transmission of link gear (6) and motor (7), work as when motor (7) start, work piece holder (4) can be followed horizontal main shaft (3) reciprocating rotation.

Furthermore, the motor is characterized by further comprising a base plate (8), a front support plate (9) and a rear support plate (91) are oppositely erected on the base plate (8) from front to back, a centering spigot is arranged on the front support plate (9), a bearing seat (1) is assembled in the centering spigot, the horizontal main shaft (3) is installed in the bearing seat (1) in a centering mode through a main shaft bearing (2), a motor (7) is further transversely arranged on the base plate (8) between the front support plate (9) and the rear support plate (91), and an output shaft of the motor (7) is located under the horizontal main shaft (3).

Furthermore, a plane thrust bearing (10) is arranged between the front support plate (9) and the workpiece holder (4).

Furthermore, a pressure applying mechanism (11) is arranged opposite to the workpiece clamp (4), and the pressure applying mechanism (11) is used for applying rated pressure to a workpiece (12) to be tested, which is arranged on the workpiece clamp (4).

Further, the pressing mechanism (11) comprises a thrust guide rod (111), a middle sliding plate (112), a spring seat (113) and a spring (114), the thrust guide rod (111) is transversely arranged between the front support plate (9) and the rear support plate (91), the middle sliding plate (112) is connected to the thrust guide rod (111) in a sliding mode, the spring seat (113) is arranged on one side plate surface of the middle sliding plate (112) opposite to the workpiece clamp (4), the spring (114) is abutted between the spring seat (113) and the workpiece (12) to be measured and is arranged coaxially with the workpiece (12) to be measured, the thrust guide rod (111) is further provided with a compression nut (115), and the compression nut (115) is used for adjusting the sliding position of the middle sliding plate (112) on the thrust guide rod (111) so as to realize the adjustment of the pretightening force of the spring (114).

Furthermore, the linkage mechanism (6) comprises a crank (61) and a connecting rod (62), wherein one end of the crank (61) is connected with the output shaft of the motor (7) through a key slot, one end of the connecting rod (62) is hinged with the swing arm (5) through a pin shaft, and the other end of the connecting rod (62) is hinged with the other end of the crank (61) through a pin shaft.

Furthermore, a protective cover (13) used for isolating the swing arm (5), the linkage mechanism (6) and the output shaft of the motor (7) is arranged on the front support plate (9).

Furthermore, a photoelectric counting sensor (14) is arranged corresponding to the swing arm (5).

Furthermore, a control panel (15) is further arranged on the substrate (8), and a start-stop switch (16) electrically connected with the motor (7) and a photoelectric counter (17) electrically connected with the photoelectric counting sensor (14) are arranged on the control panel (15).

Compared with the prior art, the utility model, have following effect of showing:

the utility model discloses a motor, link gear, the reciprocating rotation that work piece holder was realized to mutually supporting of swing arm and horizontal main shaft, can simulate the operating condition of work piece basically, in order to independently realize the fatigue degree test to this part of air spring upper seat in shock absorber assembly, thereby assemble its product property ability in advance before the air spring shock absorber assembly with each part of supporting producer supply at the host computer factory, key information such as dead time, and then whether accord with the design requirement for the spare part of objective judgement supporting producer supply provides the foundation, be favorable to reducing the fault rate of whole dress back air spring shock absorber assembly, and the production cost is reduced, also help improving the technological improvement efficiency of host computer factory and supporting producer simultaneously.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

FIG. 1 is a schematic overall structure diagram according to a first embodiment;

FIG. 2 is a sectional view of the first embodiment;

FIG. 3 is a top view of the first embodiment;

FIG. 4 is a right side view of the first embodiment;

FIG. 5 is a perspective view of the first embodiment after the shield is assembled;

the figure is marked with: the device comprises a bearing seat 1, a main shaft bearing 2, a horizontal main shaft 3, a workpiece clamp 4, a swing arm 5, a linkage mechanism 6, a motor 7, a base plate 8, a front support plate 9, a rear support plate 91, a plane thrust bearing 10, a pressure applying mechanism 11, a workpiece to be tested 12, a thrust guide rod 111, a middle sliding plate 112, a spring seat 113, a spring 114, a gland nut 115, a crank 61, a connecting rod 62, a protective cover 13, a photoelectric counting sensor 14, a control panel 15, a start-stop switch 16 and a photoelectric counter 17.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description is made with reference to the accompanying drawings and specific embodiments, and it should be understood that the specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Fig. 1 and 2 show a first exemplary embodiment of the invention: the utility model provides a reciprocal rotary type fatigue test frock, is including rotating the horizontal main shaft 3 of connecting, the one end of horizontal main shaft 3 is provided with work piece holder 4, the other end of horizontal main shaft 3 is provided with swing arm 5, swing arm 5 is connected through the output shaft transmission of link gear 6 with motor 7, works as when motor 7 starts, work piece holder 4 can be followed 3 reciprocating rotation of horizontal main shaft.

In this embodiment, reciprocal rotary type fatigue test frock still includes base plate 8, relative front and back upright front bezel 9 and back shroud 91 on base plate 8, be provided with the centering tang on front bezel 9, be equipped with bearing frame 1 in the centering tang, install horizontal main shaft 3 through main shaft bearing 2 centering in the bearing frame 1, still transversely be provided with motor 7 on base plate 8 between front bezel 9 and back shroud 91, the output shaft of motor 7 is located under horizontal main shaft 3. Preferably, a flat thrust bearing 10 is further provided between the front stay 9 and the work holder 4 in order to stably rotate the work holder 4 along the horizontal main shaft 3.

As shown in fig. 1, in specific implementation, a pressing mechanism 11 is further disposed opposite to the workpiece holder 4, and the pressing mechanism 11 is configured to apply a rated pressure to a workpiece 12 to be tested mounted on the workpiece holder 4. Since the vehicle always bears the pressure to run, in order to reflect the real data of the test, the workpiece 12 to be tested can bear the rated pressure through the pressure applying mechanism 11, and the real working condition of the vehicle running can be simulated during the test. In the present embodiment, when the pressing mechanism 11 presses the workpiece 12 to be measured, the flat thrust bearing 10 can decompose the axial pressure applied to the workpiece 12 to be measured on the front support plate 9.

As can be seen from fig. 2 and 3, the pressing mechanism 11 includes a thrust guide rod 111, a middle slide plate 112, a spring seat 113, and a spring 114, the thrust guide rod 111 is transversely disposed between the front support plate 9 and the rear support plate 91, the middle slide plate 112 is slidably connected to the thrust guide rod 111, the spring seat 113 is disposed on a side plate surface of the middle slide plate 112 opposite to the workpiece holder 4, the spring 114 abuts between the spring seat 113 and the workpiece 12 to be measured and is disposed coaxially with the workpiece 12 to be measured, the thrust guide rod 111 is further provided with a compression nut 115, and the compression nut 115 is used for adjusting a sliding position of the middle slide plate 112 on the thrust guide rod 111, so as to adjust a pre-tightening force of the spring 114. Preferably, four thrust guide rods 111 are arranged in a rectangular array. The spring 114, the spring seat 113, and the work holder 4 are all coaxially disposed.

As shown in fig. 4, the linkage mechanism 6 includes a crank 61 having one end connected to the output shaft of the motor 7 through a key slot, and a connecting rod 62 having one end hinged to the swing arm 5 through a pin, and the other end of the connecting rod 62 is hinged to the other end of the crank 61 through a pin. After the motor 7 is started, an output shaft of the motor drives the crank 61 to rotate, at the moment, the crank 61 transmits the rotating motion to the connecting rod 62 to be changed into pulling and pushing motion, the connecting rod 62 pushes and pulls the swing arm 5 to swing, so that the swing arm 5 drives the horizontal main shaft 3 to do reciprocating rotation, and the workpiece 12 to be detected is fixed on the workpiece clamp 4 because the other end of the horizontal main shaft 3 is fixed with the workpiece clamp 4, so that the workpiece 12 to be detected can be driven by the motor 7 to do reciprocating rotation fatigue tests.

Referring to fig. 5, preferably, in order to avoid that a worker mistakenly touches the linkage mechanism 6 after the motor 7 is started and reduce the noise generated during the operation of the tool, a protective cover 13 for isolating the swing arm 5, the linkage mechanism 6 and the output shaft of the motor 7 is further disposed on the front support plate 9.

As can be seen from fig. 3 and 4, in order to quickly record the reciprocating rotation times of the workpiece 12 to be measured, a photoelectric counting sensor 14 is further arranged corresponding to the swing arm 5.

As shown in fig. 5, in order to facilitate the start or pause of the test by the worker and intuitively know the number of times of the test on the workpiece 12 to be tested, a control panel 15 is further disposed on the substrate 8, and a start/stop switch 16 electrically connected to the motor 7 and a photoelectric counter 17 electrically connected to the photoelectric counting sensor 14 are disposed on the control panel 15.

The principle of the present invention is explained below based on the structure disclosed in the first embodiment:

before the test is started, the compression nut 115 is retracted to the end, away from the workpiece clamp 4, of the thrust guide rod 111, and the middle sliding plate 112 is correspondingly retracted to be close to the compression nut 115; taking out the workpiece 12 to be tested, and fixedly installing the workpiece 12 to be tested on the corresponding hole position of the workpiece clamp 4 by using a fixing bolt; the middle sliding plate 112 is pushed to approach the workpiece 12 to be measured, a spring 114 is placed between a spring seat 113 on the middle sliding plate 112 and the workpiece 12 to be measured, and the position of the middle sliding plate 112 is recorded when the free length of the spring 114 is approached. Calculating the compression length of the spring 114 when applying rated pressure according to the test requirement (the calculation formula is that the compression length of the spring is pressure/kilogram force of the spring); then, the middle sliding plate 112 is pushed to compress the spring 114 to a preset length, and the middle sliding plate 112 is locked on the thrust guide rod 111 by using the compression nut 115; the motor 7 is started to run in a test mode through the start-stop switch 16, and the test can be formally started without abnormality; when the experiment is formally started, the photoelectric counter 17 is reset to zero and the time is recorded, and when the reciprocating rotation frequency of the workpiece 12 to be measured recorded by the photoelectric counting sensor 14 reaches 730000-1825000, the product is judged to meet the design requirement.

To sum up, the utility model discloses a motor 7, link gear 6, the reciprocal rotation that work holder 4 was realized to mutually supporting of swing arm 5 and horizontal main shaft 3, can simulate the operating condition of work piece basically, with the fatigue degree test to this part of air spring upper bracket in the shock absorber assembly of independent realization, thereby assemble its product property ability in advance before the air spring shock absorber assembly at the host computer factory with each part of supporting producer supply, key information such as failure time, and then whether accord with the designing requirement for the spare part of the supporting producer supply of objective judgement provides the basis, be favorable to reducing the fault rate of whole dress back air spring shock absorber assembly, and the production cost is reduced, also help improving the technological improvement efficiency of host computer factory and supporting producer simultaneously.

Finally, it should be noted that the above-mentioned technical solutions are only preferred embodiments of the present invention, and certainly, the scope of the present invention should not be limited thereby, and those skilled in the art can understand that all or part of the procedures of the above-mentioned embodiments can be realized, and the equivalent changes made according to the claims of the present invention still belong to the scope covered by the present invention.

Claims

1. The utility model provides a reciprocal rotary type fatigue test frock, its characterized in that, including horizontal main shaft (3) of rotating the connection, the one end of horizontal main shaft (3) is provided with work piece holder (4), the other end of horizontal main shaft (3) is provided with swing arm (5), swing arm (5) are connected through the output shaft transmission of link gear (6) and motor (7), work as when motor (7) start, work piece holder (4) can be followed horizontal main shaft (3) reciprocating rotation.

2. The reciprocating and rotating type fatigue test tool according to claim 1, further comprising a base plate (8), wherein a front support plate (9) and a rear support plate (91) are relatively erected on the base plate (8) in a front-back direction, a centering spigot is arranged on the front support plate (9), a bearing seat (1) is assembled in the centering spigot, the horizontal spindle (3) is installed in the bearing seat (1) in a centering manner through a spindle bearing (2), a motor (7) is further transversely arranged on the base plate (8) between the front support plate (9) and the rear support plate (91), and an output shaft of the motor (7) is located right below the horizontal spindle (3).

3. The reciprocating and rotating type fatigue testing tool according to claim 2, wherein a planar thrust bearing (10) is further arranged between the front support plate (9) and the workpiece fixture (4).

4. The reciprocating and rotating type fatigue test tool according to claim 3, wherein a pressing mechanism (11) is further arranged opposite to the workpiece clamp (4), and the pressing mechanism (11) is used for applying rated pressure to a workpiece (12) to be tested and installed on the workpiece clamp (4).

5. The reciprocating rotation type fatigue test tool according to claim 4, wherein the pressing mechanism (11) comprises a thrust guide rod (111), a middle sliding plate (112), a spring seat (113) and a spring (114), the thrust guide rod (111) is transversely arranged between the front support plate (9) and the rear support plate (91), the middle sliding plate (112) is slidably connected to the thrust guide rod (111), the spring seat (113) is arranged on one side plate surface of the middle sliding plate (112) opposite to the workpiece holder (4), the spring (114) abuts against between the spring seat (113) and the workpiece (12) to be tested and is coaxially arranged with the workpiece (12) to be tested, a pressing nut (115) is further arranged on the thrust guide rod (111), and the pressing nut (115) is used for adjusting the sliding position of the middle sliding plate (112) on the thrust guide rod (111), so as to realize the adjustment of the pretightening force of the spring (114).

6. The reciprocating rotary type fatigue test tool according to claim 5, wherein the linkage mechanism (6) comprises a crank (61) with one end connected with the output shaft of the motor (7) through a key slot, and a connecting rod (62) with one end hinged with the swing arm (5) through a pin shaft, and the other end of the connecting rod (62) is hinged with the other end of the crank (61) through a pin shaft.

7. The reciprocating and rotating type fatigue test tool according to claim 6, wherein a protective cover (13) for isolating the swing arm (5), the linkage mechanism (6) and the output shaft of the motor (7) is further arranged on the front support plate (9).

8. The reciprocating rotary type fatigue test tool according to claim 2, wherein a photoelectric counting sensor (14) is further arranged corresponding to the swing arm (5).

9. The reciprocating and rotating type fatigue test tool according to claim 8, wherein a control panel (15) is further arranged on the base plate (8), and a start-stop switch (16) electrically connected with the motor (7) and a photoelectric counter (17) electrically connected with the photoelectric counting sensor (14) are arranged on the control panel (15).