CN218470169U

CN218470169U - Fatigue testing machine for chair elastomer

Info

Publication number: CN218470169U
Application number: CN202222752795.4U
Authority: CN
Inventors: 赵保磊; 王献勇; 于文辉; 彭帅
Original assignee: Shandong GMYD Children Furniture Technology Co Ltd
Current assignee: Shandong GMYD Children Furniture Technology Co Ltd
Priority date: 2022-10-19
Filing date: 2022-10-19
Publication date: 2023-02-10
Anticipated expiration: 2032-10-19

Abstract

The utility model discloses a chair elastomer fatigue testing machine, which comprises an elastomer to be tested and a testing machine; the testing machine comprises a box body, a telescopic mechanism, a pull rope assembly and a supporting test board, wherein the telescopic mechanism, the pull rope assembly and the supporting test board are arranged in the box body; the pull rope assembly comprises a pull rope, one end of the pull rope is connected with the telescopic end of the telescopic mechanism, one end of the pull rope is connected with the supporting and testing table, and the supporting and testing table is tightly provided with an elastomer to be tested. The utility model discloses a set up telescopic machanism, stay cord subassembly, support test platform, detect the life-span of the back of the chair elastic connecting piece, elastomer through above-mentioned structure, guaranteed security, the travelling comfort that children used.

Description

Fatigue testing machine for chair elastomer

Technical Field

The utility model relates to a children's seat utensil chair class detects the technical field who equips, specifically is a tired test machine of elastomer for chair.

Background

The conventional child learning chair in the market is a single-back and double-back learning chair, so that the use safety and comfort of children of different ages are basic requirements, particularly the service life of a chair back connecting piece is prolonged, most of the children are connected with a plastic part through a spring, the plastic part is often aged due to aging factors, the spring falls out, the chair back connecting function fails, the material is guaranteed not to be aged, the use safety and comfort of the children are guaranteed, the durability test of the chair back connecting piece incoming materials is very important, and the conventional chair is very deficient in the part testing equipment.

In order to solve the above problems, the present invention is proposed.

Disclosure of Invention

An object of the utility model is to provide a chair is with tired test machine of elastomer.

The purpose of the utility model can be realized by the following technical scheme:

a fatigue testing machine for chair elastomers comprises an elastomer to be tested and a testing machine; the testing machine comprises a box body, a telescopic mechanism, a pull rope assembly and a supporting test board, wherein the telescopic mechanism, the pull rope assembly and the supporting test board are arranged in the box body; the pull rope assembly comprises a pull rope, one end of the pull rope is connected with the telescopic end of the telescopic mechanism, one end of the pull rope is connected with the supporting test board, and the supporting test board is tightly provided with an elastomer to be tested.

Furthermore, the box body comprises a box frame, a plurality of cylinders are arranged inside the box frame, the cylinders are longitudinally arranged below the upper frame column, a C-shaped upper plate is fixedly connected below the cylinders, the box frame also comprises a middle plate, the middle plate is fixedly arranged in the middle of the box frame, and the middle plate is fixedly connected with the middle frame column to divide the box body into an upper space and a lower space; the support test platform is installed on the medium plate, and the inside of tank tower still includes 1# cylinder and 2# cylinder, and 1# cylinder and 2# cylinder set up the left side and the right side in the medium plate top respectively.

Further, the lower space of box vertically sets up telescopic machanism, telescopic machanism includes among cylinder telescopic machanism, the electric push rod telescopic machanism one, cylinder telescopic machanism includes 1# cylinder, 2# cylinder, 3# cylinder, 4# cylinder, 5# cylinder, 6# cylinder, a plurality of pneumatic solenoid valve, the stiff end and the medium plate fixed connection of 1# cylinder, 2# cylinder, 3# cylinder, 4# cylinder, 5# cylinder, 6# cylinder.

Furthermore, the pull rope assembly further comprises a No. 1 lifting ring pulley block, a No. 2 lifting ring pulley block, a No. 3 lifting ring pulley block, a No. 4 lifting ring pulley block, a No. 5 lifting ring pulley block, a No. 6 lifting ring pulley block, a No. 1 rolling pulley, a No. 2 rolling pulley and a plurality of pull rope fasteners; 1# rings assembly pulley, 2# rings assembly pulley, 3# rings assembly pulley, 4# rings assembly pulley, 5# rings pulley divide into three groups to hang respectively and establish the lower surface at the left side of C type floor 45, the right side, the rear side, 1# rolling pulley, 2# rolling pulley fastening sets up in the upper end of 1# cylinder and 2# cylinder, 1# cylinder, 2# cylinder, 3# cylinder, 4# cylinder, 5# cylinder, the flexible end and the stay cord fastener fastening of 6# cylinder are connected.

Furthermore, the supporting and testing table comprises an elastic body positioning column, an elastic body connecting plate, a No. 1 lifting ring, a No. 2 lifting ring, a No. 3 lifting ring, a No. 4 lifting ring, a No. 5 lifting ring, a No. 3 rolling pulley and a No. 4 rolling pulley; the elastic body positioning column is longitudinally and fixedly arranged above the center of the middle plate, and a fixing screw hole used for being connected with the elastic body is formed in the top end of the elastic body positioning column; elastomer connecting plate is approximate pentagonal shape, and elastomer connecting plate pentagonal apex angle top sets up 3# rings, 4# rings, 5# rings, and elastomer connecting plate pentagonal base below sets up 1# rings, 2# rings, still is provided with the screw hole that a plurality of and elastomer are connected on the elastomer connecting plate, and medium plate top, the front and back that is located the elastomer reference column set up 3# rolling pulley, 4# rolling pulley.

Preferably, one end of the pull rope is fixedly connected with the pull rope fastener, the other end of the pull rope corresponds to and penetrates through the 1# lifting ring pulley block, the 2# lifting ring pulley block, the 3# lifting ring pulley block, the 4# lifting ring pulley block, the 5# lifting ring pulley block and the 6# lifting ring pulley block, and finally is fixedly connected with the 1# lifting ring, the 2# lifting ring, the 3# lifting ring, the 4# lifting ring and the 5# lifting ring of the elastomer connecting plate, wherein the 5# lifting ring is simultaneously and fixedly connected with the pull rope penetrating through the 5# lifting ring pulley block and the 6# lifting ring pulley block.

Preferably, the box frame is provided with a top plate, a bottom plate, a back plate, side plates, an upper door plate and a lower door plate, and the upper door plate and the lower door plate are respectively arranged in the upper front and the lower front of the box frame and are connected with the box frame through hinges.

Preferably, the box frame is enclosed by stand, upper frame post, well frame post, lower frame post, the stand is four, encloses into cubic structure, and upper frame post is fixed in the top of stand, and lower frame post is fixed in the below of stand, and well frame post is fixed in the middle part of stand.

The beneficial technical effects are as follows:

the utility model discloses a set up telescopic machanism, stay cord subassembly, support the testboard, detect the life-span of back of the chair elastic connecting piece, elastomer through above-mentioned structure, guaranteed security, the travelling comfort that children used.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is an external view of the fatigue tester for chair elastic body.

Fig. 2 is an exploded view of the fatigue testing machine for chair elastic body of the present invention.

Fig. 3 is a partial explosion diagram of the fatigue testing machine for the elastic body of the chair.

Fig. 4 is a structural schematic diagram of the case frame of the elastic body fatigue testing machine for chairs of the utility model.

Fig. 5 is a schematic structural view of the elastomer connecting plate of the present invention.

Fig. 6 is another schematic structural view of the elastomer connecting plate of the present invention.

Fig. 7 is a schematic view of the connection structure of the elastomer connection plate, the elastomer positioning column and the elastomer of the present invention.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given for further details of the present invention with reference to the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention, and are not intended to limit the present invention.

Referring to fig. 1 to 7, a fatigue testing machine for an elastic body for a chair includes an elastic body to be tested and a testing machine; the testing machine comprises a box body, a telescopic mechanism, a pull rope assembly and a supporting test board, wherein the telescopic mechanism, the pull rope assembly and the supporting test board are arranged in the box body; the pull rope assembly comprises a pull rope, one end of the pull rope is connected with the telescopic end of the telescopic mechanism, one end of the pull rope is connected with the supporting test bench, and the supporting test bench is tightly provided with an elastomer to be tested; the telescopic end of the telescopic mechanism rolls and pulls the pull rope, so that the support test board swings up and down and left and right, and the aim of stretching and pressing the elastomer to be tested is fulfilled.

The box body comprises a box frame 2, and a top plate 13, a bottom plate, a back plate, side plates 12, an upper door plate 11 and a lower door plate 111 which are arranged on the box frame 2; the upper door plate 11 and the lower door plate 111 are respectively arranged at the upper front part and the lower front part of the box frame 2 and are hinged with the box frame 2, and the plates are made of steel plates or artificial plates.

The box frame 2 is formed by enclosing upright posts 14, upper frame posts 26, middle frame posts 25 and lower frame posts 27, wherein the four upright posts 14 are enclosed into a cubic structure, the upper frame posts 26 are fixed above the upright posts 14, the lower frame posts 27 are fixed below the upright posts 14, and the middle frame posts 25 are fixed in the middle of the upright posts 14; the upright post 14, the upper frame post 26, the middle frame post 25 and the lower frame post 27 can be made of aluminum profiles, and can also be made of pipes or universal angle irons.

The lower part of the box frame 2 is provided with a supporting leg 15.

The box frame 2 is provided with a plurality of columns 37 inside, and the columns 37 are longitudinally arranged below the upper frame column 26 and are fixedly connected with the upper frame column 26. The upper frame column 26 is made of aluminum section or tube.

A C-shaped upper plate 45 is fixedly connected below the column body 37, and the C-shaped upper plate 45 is a steel plate.

The box frame 2 also comprises a middle plate 46 inside, the middle plate 46 is fixedly arranged in the middle of the box frame 2, and the middle plate 46 is fixedly connected with the middle frame column 25 to divide the box body into an upper space and a lower space; the support and test stand is mounted above the middle plate 46, with the upper space for testing and the lower space for mounting air bars and pneumatic components. The middle plate 46 is a steel plate.

The lower space of the box body 2 is longitudinally provided with a telescopic mechanism, and the telescopic mechanism comprises one of a cylinder telescopic mechanism and an electric push rod telescopic mechanism. The present embodiment is described with a cylinder telescopic mechanism, which includes a 1# cylinder 421, a 2# cylinder 422, a 3# cylinder 423, a 4# cylinder 424, a 5# cylinder 425, a 6# cylinder 426, and a plurality of pneumatic solenoid valves. The air cylinder and the pneumatic electromagnetic valve are commercially available existing products. Besides the cylinder mode, the telescopic mechanism adopts an electric push rod mode, so that the trouble of air supply is reduced.

The fixed ends of the 1# cylinder 421, the 2# cylinder 422, the 3# cylinder 423, the 4# cylinder 424, the 5# cylinder 425 and the 6# cylinder 426 are fixedly connected with the middle plate 46.

The box holder 2 further includes # 1 cylinder 451 and # 2 cylinder 452, the # 1 cylinder 451 and the # 2 cylinder 452 are respectively disposed on the left side and the right side above the middle plate 46, and the # 1 cylinder 451 and the # 2 cylinder 452 are made of aluminum or tube.

The pull rope assembly comprises a 1# lifting ring pulley block 411, a 2# lifting ring pulley block 412, a 3# lifting ring pulley block 413, a 4# lifting ring pulley block 414, a 5# lifting ring pulley block 415, a 6# lifting ring pulley block 416, a 1# rolling pulley, a 2# rolling pulley, a plurality of pull rope fasteners and a plurality of pull ropes; the lifting ring pulley block 411, the lifting ring pulley block 2, the lifting ring pulley block 412, the lifting ring pulley block 413, the lifting ring pulley block 414 and the lifting ring pulley block 415 are divided into three groups which are respectively hung on the lower surfaces of the left side, the right side and the rear side of the C-shaped laminate 45, the rolling pulley block 1 and the rolling pulley block 2 are fixedly arranged at the upper ends of the cylinder body 451 and the cylinder body 452 2, and the telescopic ends of the cylinder body 1 421, the cylinder body 2 422, the cylinder body 3 423, the cylinder body 4, the cylinder body 5, the cylinder body 425 and the cylinder body 6 426 are fixedly connected with the pull rope fastener. The flying ring pulley component, the rolling pulley, the pull rope fastener and the pull rope are all selected from the existing products sold in the market.

The supporting and testing platform comprises an elastic body positioning column 7, an elastic body connecting plate 3, a 1# lifting ring 31, a 2# lifting ring 32, a 3# lifting ring 33, a 4# lifting ring 34, a 5# lifting ring 35, a 3# rolling pulley 441 and a 4# rolling pulley 442; the elastic body positioning column 7 is longitudinally and fixedly arranged above the center of the middle plate 46, and a fixing screw hole used for being connected with the elastic body 6 is formed in the top end of the elastic body positioning column 7.

The elastomer connecting plate 3 is approximately pentagonal, a 3# lifting ring 33, a 4# lifting ring 34 and a 5# lifting ring 35 are arranged above a pentagonal vertex angle of the elastomer connecting plate 3, a 1# lifting ring 31 and a 2# lifting ring 32 are arranged below a pentagonal bottom edge of the elastomer connecting plate 3, and a plurality of screw holes 36 connected with the elastomer 6 are further arranged on the elastomer connecting plate 3. 3# rolling pulleys 441 and 4# rolling pulleys 442 are disposed above the middle plate 46 and in front of and behind the elastic body positioning columns 7.

In order to realize the vertical and horizontal swinging of the support test platform and the stretching and pressing of the elastomer 6 to be tested, one end of a pull rope is fixedly connected with a pull rope fastener, and the other end of the pull rope corresponds to and penetrates through a 1# lifting ring pulley block 411, a 2# lifting ring pulley block 412, a 3# lifting ring pulley block 413, a 4# lifting ring pulley block 414, a 5# lifting ring pulley block 415, a 6# lifting ring pulley block 416, and is finally fixedly connected with a 1# lifting ring 31, a 2# lifting ring 32, a 3# lifting ring 33, a 4# lifting ring 34 and a 5# lifting ring 35 of the elastomer connecting plate 3, wherein the 5# lifting ring 35 is simultaneously and fixedly connected with the pull rope penetrating through the 5# lifting ring pulley block 415 and the 6# lifting ring pulley block 416.

In order to realize the control of the telescopic mechanism, the upper door plate 11 is provided with a control module, and the control module comprises a control circuit board, a display screen 8, an operation key, a warning lamp and a power switch. The control circuit board purchases a commercially available PLC programmable product, and is provided with a program memory, an information input end and a control output end; the warning light can be purchased from the market with red, yellow, green and sound. The display screen 8 is installed on the upper door plate 11, and a power switch key 81 is arranged below the display screen 8.

Operation keys for realizing control are arranged on the display screen 8 and comprise a system entering key, a 1# cylinder 421, a 2# cylinder 422, a 3# cylinder 423, a 4# cylinder 424, a 5# cylinder 425, a 6# cylinder 426 start/stop key, a parameter setting key and a manual/automatic mode key; the operation key is electrically connected with the information input end of the control circuit board.

The control output end of the control circuit board is at least provided with more than 8, the 1# to 6# output end is electrically connected with the 1# to 6# pneumatic electromagnetic valve correspondingly, the 7# output end is electrically connected with the warning lamp, and the 8# output end is electrically connected with the power switch.

After the display screen is operated and set, when the 1# to 6# pneumatic solenoid valves are electrified, if the 1# pneumatic solenoid valves are electrified, the 1# air cylinders connected with the solenoid valves stretch or contract, the 1# stay ropes tension the 1# hanging rings on the elastomer connecting plates upwards, and the elastomer connecting plates simultaneously drive the tested elastomers to twist upwards; similarly, if the No. 5 pneumatic solenoid valve is electrified, the No. 5 air cylinder connected with the solenoid valve stretches or contracts, the No. 5 pull rope downwards tensions the No. 5 hanging ring on the elastomer connecting plate, and at the moment, the elastomer connecting plate is pulled down and presses the elastomer to be tested.

If the No. 3 pneumatic electromagnetic valve is electrified, the No. 3 cylinder connected with the electromagnetic valve stretches and contracts, the No. 3 lifting ring on the elastomer connecting plate is upwards tensioned by the pull rope, and the elastomer connecting plate simultaneously drives the tested elastomer to be upwards pulled and upwards twisted; the elastic body connecting plates are reciprocated in a mode of changing up and down or left and right or down, left and up and right and the like, and the tested elastic body is also twisted up or down or left and right or down, left and up and right or twisted down.

The test machine is powered on, the power switch is started, the display screen and the control circuit board are powered on to work, and the display screen is clicked to control the operation keys to work as follows: the system enters a key, a screen shows an 'elastomer fatigue testing machine' picture, and a menu key such as 'manual operation', 'automatic operation' and 'parameter setting' appears in the picture.

1. Manual/automatic mode: the manual mode and the automatic mode can be selected by clicking manual/automatic operation; clicking 'manual operation' to enter a manual operation picture, and clicking to start/stop the operation of the 1# -6 # air cylinders. Similarly, clicking 'automatic operation' to enter an automatic operation picture, and starting/stopping the air cylinder according to a set program. The program setting may be performed automatically in the number of cycles, or may be stopped after the operation time T1 and continued after the interval time T2.

2. Setting parameters: the number of cycles, cylinder dwell times, cylinder actuation clearances, cylinder cycle intervals, etc. may be set.

3. The warning lamp has the following functions: after the door plate on the testing machine is closed and locked, the power switch key 81 is started, and when the control module works normally, a green light is displayed; and after the program work is finished, a yellow light can be displayed, and if an abnormality occurs in the working process, a short flashing red light and a warning sound are displayed.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A fatigue testing machine for chair elastomers comprises an elastomer to be tested and a testing machine; the testing machine is characterized by comprising a box body, a telescopic mechanism, a pull rope assembly and a supporting test board, wherein the telescopic mechanism, the pull rope assembly and the supporting test board are arranged in the box body; the pull rope assembly comprises a pull rope, one end of the pull rope is connected with the telescopic end of the telescopic mechanism, one end of the pull rope is connected with the supporting test board, and the supporting test board is tightly provided with an elastomer to be tested.

2. The fatigue testing machine for the chair elastomer as claimed in claim 1, wherein the box body comprises a box frame (2), a plurality of cylinders (37) are arranged inside the box frame (2), the cylinders (37) are longitudinally arranged below the upper frame columns (26), a C-shaped upper plate (45) is fixedly connected below the cylinders (37), a middle plate (46) is further arranged inside the box frame (2), the middle plate (46) is fixedly arranged in the middle of the box frame (2), and the middle plate (46) is fixedly connected with the middle frame columns (25) to divide the box body into an upper space and a lower space; the supporting test bench is arranged on the middle plate (46), the box frame (2) further comprises a # 1 cylinder (451) and a # 2 cylinder (452), and the # 1 cylinder (451) and the # 2 cylinder (452) are respectively arranged on the left side and the right side above the middle plate (46).

3. The fatigue testing machine for the chair elastic body according to claim 2, wherein a telescopic mechanism is vertically arranged in the lower space of the box body, the telescopic mechanism comprises one of a cylinder telescopic mechanism and an electric push rod telescopic mechanism, the cylinder telescopic mechanism comprises a 1# cylinder (421), a 2# cylinder (422), a 3# cylinder (423), a 4# cylinder (424), a 5# cylinder (425), a 6# cylinder (426), a plurality of pneumatic electromagnetic valves, and fixed ends of the 1# cylinder (421), the 2# cylinder (422), the 3# cylinder (423), the 4# cylinder (424), the 5# cylinder (425) and the 6# cylinder (426) are fixedly connected with the middle plate (46).

4. The chair elastomer fatigue testing machine according to claim 2, wherein the rope pulling component comprises a 1# hoisting ring pulley block (411), a 2# hoisting ring pulley block (412), a 3# hoisting ring pulley block (413), a 4# hoisting ring pulley block (414), a 5# hoisting ring pulley block (415), a 6# hoisting ring pulley block (416), a 1# rolling pulley, a 2# rolling pulley, a plurality of rope pulling fasteners and a plurality of pulling ropes; 1# rings assembly pulley (411), 2# rings assembly pulley (412), 3# rings assembly pulley (413), 4# rings assembly pulley (414), 5# rings assembly pulley (415) divide into three groups to hang respectively and establish the left side at C type plywood (45), the right side, the lower surface of rear side, 1# rolling pulley, 2# rolling pulley fastening sets up the upper end at 1# cylinder (451) and 2# cylinder (452), 1# cylinder (421), 2# cylinder (422), 3# cylinder (423), 4# cylinder (424), 5# cylinder (425), the flexible end and the stay cord fastener fastening of 6# cylinder (426) are connected.

5. The fatigue testing machine for the chair elastic body according to claim 2, wherein the supporting and testing table comprises an elastic body positioning column (7), an elastic body connecting plate (3), a 1# lifting ring (31), a 2# lifting ring (32), a 3# lifting ring (33), a 4# lifting ring (34), a 5# lifting ring (35), a 3# rolling pulley (441) and a 4# rolling pulley (442); the elastic body positioning column (7) is longitudinally and fixedly arranged above the center of the middle plate (46), and a fixing screw hole used for being connected with the elastic body (6) is formed in the top end of the elastic body positioning column (7); elastomer connecting plate (3) pentagon apex angle top sets up 3# rings (33), 4# rings (34), 5# rings (35), elastomer connecting plate (3) pentagon base below sets up 1# rings (31), 2# rings (32), still be provided with screw hole (36) that a plurality of and elastomer (6) are connected on elastomer connecting plate (3), medium plate (46) top, be located elastomer reference column (7) around set up 3# rolling pulley (441), 4# rolling pulley (442).

6. The fatigue testing machine for the chair elastomer is characterized in that one end of the pull rope is fixedly connected with the pull rope fastener, and the other end of the pull rope corresponds to and penetrates through a 1# lifting ring pulley block (411), a 2# lifting ring pulley block (412), a 3# lifting ring pulley block (413), a 4# lifting ring pulley block (414), a 5# lifting ring pulley block (415) and a 6# lifting ring pulley block (416), and is finally fixedly connected with a 1# lifting ring (31), a 2# lifting ring (32), a 3# lifting ring (33), a 4# lifting ring (34) and a 5# lifting ring (35) of the elastomer connecting plate (3), wherein the 5# lifting ring (35) is simultaneously and fixedly connected with the pull rope which penetrates through the 5# lifting ring pulley block (415) and the 6# lifting ring pulley block (416).

7. The fatigue tester for a chair elastic body according to claim 2, wherein the top plate (13), the bottom plate, the back plate, the side plate (12), the upper door plate (11), and the lower door plate (111) are provided on the box frame (2), and the upper door plate (11) and the lower door plate (111) are provided on the upper front side and the lower front side of the box frame (2), respectively, and are hinged to the box frame (2).

8. The fatigue testing machine for the chair elastic body according to claim 2, wherein the box frame (2) is defined by four upright columns (14), an upper frame column (26), a middle frame column (25) and a lower frame column (27), the upright columns (14) are defined into a cubic structure, the upper frame column (26) is fixed above the upright column (14), the lower frame column (27) is fixed below the upright column (14), and the middle frame column (25) is fixed in the middle of the upright column (14).