CN216621788U

CN216621788U - Durability testing device

Info

Publication number: CN216621788U
Application number: CN202123448062.3U
Authority: CN
Inventors: 朱正朝; 樊权锋
Original assignee: Maijule Shanghai Automobile Machinery Co ltd
Current assignee: Maijule Shanghai Automobile Machinery Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-27
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to a durability testing device, relate to the field of seat check out test set, it includes the mounting bracket, a fixed subassembly for fixing the seat in the mounting bracket bottom, the upset piece of simulation human weight, along gliding pendant of vertical direction and be used for driving the driving piece of pendant, pendant slidable mounting is on the mounting bracket, the upset piece is hung in the below of pendant and is located the top of fixed subassembly, be provided with automatically controlled connecting piece between driving piece and the pendant, can dismantle through automatically controlled connecting piece between pendant and the driving piece and be connected, be provided with on the mounting bracket with automatically controlled connecting piece, the controller that the driving piece electricity is connected. This application will be beaten the piece through driving piece drive hanger and mention, then realize being connected and the disconnection between driving piece and the hanger through automatically controlled connecting piece, when beating the piece and mention the certain height after automatically controlled connecting piece disconnection hanger and the driving piece be connected, make and beat the piece and drop on the seat, then repetitive motion test seat life.

Description

Durability testing device

Technical Field

The application relates to the field of seat detection equipment, in particular to a durability testing device.

Background

The chair is a seat with a backrest and armrests. An office chair refers to a chair used by ordinary office staff.

There are various seats in the market at present, and the life of seat is the powerful evaluation of regarding its use value, and office chair especially, office chair can be used by the official working personnel every day, causes the use comfort level to reduce easily, and even the lower seat of life can early take place to damage, can also cause the injury of official working personnel under the condition that does not have advance alert, so to be important to the test of the durability of seat, especially the durability detection of the seat of often using is very essential.

Aiming at the related technology, the seat needs to be subjected to sampling inspection before leaving the factory, the sampled seat is subjected to an impact endurance test, the number of times of impact which can be borne by the seat is tested, the service life of the seat is calculated according to the number of times of impact, and therefore whether the seat is qualified or not is judged. To this end, the inventors provide a durability testing apparatus.

SUMMERY OF THE UTILITY MODEL

In order to test the service life of the seat, the application provides a durability test device.

The application provides a durable testing arrangement adopts following technical scheme:

the utility model provides a durability testing device, includes the mounting bracket, is used for fixing the seat the fixed subassembly of mounting bracket bottom, the upset of simulation human weight piece, along the gliding pendant of vertical direction and fix be used for the drive on the mounting bracket the driving piece of pendant, pendant slidable mounting is in on the mounting bracket, the upset piece is hung the below of pendant and is located the top of fixed subassembly, the driving piece with be provided with automatically controlled connecting piece between the pendant, the pendant with can dismantle the connection through automatically controlled connecting piece between the driving piece, be provided with on the mounting bracket with automatically controlled connecting piece the controller that the driving piece electricity is connected.

By adopting the technical scheme, the seat is fixed on the mounting seat by the fixing component, so that the seat can be prevented from toppling in the test process; an electric control connecting piece is arranged between the driving piece and the hanging piece, so that the driving piece and the hanging piece can be detachably connected, the driving piece is used for driving the hanging piece to lift the upsetting piece, and when the upsetting piece moves upwards to a set height, the controller controls the electric control connecting piece to remove the connection between the driving piece and the hanging piece, so that the upsetting piece can freely fall on the seat; then the driving piece descends, when the driving piece touches the hanger, the controller controls the electric control connecting piece to connect the driver and the hanger, the driving assembly continues to ascend and lift the upsetting piece, the driving piece is cut off when ascending to the set height, the driving piece and the hanger are connected, the action of a human simulator sitting on the seat is repeatedly carried out, the impact frequency born by the seat is tested, the service life of the seat is measured, and whether the seat is qualified is judged.

Optionally, the suspender member includes guide bar and connecting plate, the top of mounting bracket is fixed with the mounting panel, the driving piece is fixed on the mounting panel, run through on the mounting panel set up with guide bar sliding fit's guiding hole, the connecting plate is fixed the guide bar is close to the one end of upsetting the piece, the upsetting piece is fixed the connecting plate is kept away from one side of guide bar.

Through adopting above-mentioned technical scheme, set up guide bar and connecting plate, slide the guide bar and set up on the mounting panel, the upset piece can move along the direction of guide bar all the time when the up-and-down motion, can prevent that the upset piece breaks away from normal movement track and leads to the test inaccurate.

Optionally, the electronic control connecting piece comprises an electromagnet fixed on the driving piece, and the driving piece drives the electromagnet to be close to or far away from the connecting plate.

Through adopting above-mentioned technical scheme, set up the electro-magnet, with being connected with and the disconnection of electro-magnet control driving piece and pendant, simple structure, control are convenient.

Optionally, the electronic control connecting piece further comprises a guide plate fixed on the electromagnet, and the guide rod penetrates through the guide plate and is in sliding fit with the guide plate.

By adopting the technical scheme, the guide plate is fixed on the electromagnet and can slide along the guide rod, so that the electromagnet can be prevented from deviating from the motion track in the test process.

Optionally, the driving part is set as an air cylinder, a low-position sensor used for monitoring the operation of the air cylinder to the lowest position and a high-position sensor used for monitoring the operation of the air cylinder to the highest position are arranged on the driving part, and the low-position sensor and the high-position sensor are electrically connected with the controller.

By adopting the technical scheme, the driving part is set as the cylinder, and the power source of the cylinder is convenient to obtain; the cylinder is provided with a high-level sensor and a low-level sensor, when the cylinder moves upwards and the high-level sensor monitors that the cylinder reaches a set position, the high-level sensor transmits a signal to the controller, and the controller controls the electric control connecting piece to contact the connection between the driving piece and the hanger; when the cylinder descends, the lower sensor monitors that the cylinder runs to a set position, the lower sensor transmits a signal to the controller, and the controller controls the electric control connecting piece to connect the driving piece and the hanging piece.

Optionally, a limiting block for limiting the falling height of the guide rod is fixed at one end of the guide rod, which is far away from the connecting plate.

Through adopting above-mentioned technical scheme, fixed stopper on the guide bar can control the distance that the guide bar glided, simultaneously, can prevent that the guide bar from breaking away from the guiding hole.

Optionally, the mounting frame comprises a cubic support frame and a bottom plate, the support frame is fixed on the bottom plate, and the seat is fixed on the bottom plate through the fixing assembly.

Through adopting above-mentioned technical scheme, set up support frame and bottom plate, make driving piece and seat have the installation basis.

Optionally, the fixed subassembly includes many horizontal poles and the vertical pole that prop tight or press from both sides tight seat shank and press the horizontal pole with depression bar on the vertical pole, the horizontal pole with the vertical pole supports the shank lateral wall of tight seat, the vertical lead screw that is fixed with on the bottom plate, the lead screw is worn to establish the depression bar, install the hand wheel of in-band screw thread on the lead screw, the hand wheel supports tightly on the depression bar.

Through adopting above-mentioned technical scheme, can wear to establish between the seat leg with horizontal pole and vertical pole in the test process, or with the shank of horizontal pole and vertical pole centre gripping seat, the prevention seat takes place to topple over in the test process, then the use of reuse depression bar is pushed down horizontal pole and vertical pole and is screwed up fixedly with the hand wheel, the use of horizontal pole, vertical pole and depression bar is nimble, can be applicable to multiple seat structure.

Optionally, the upset piece includes the sack that is equipped with the balancing weight.

Through adopting above-mentioned technical scheme, regard as the piece of forging with the sack balancing weight, the weight accessible increase and decrease balancing weight of the piece of forging is adjusted, simple structure, convenient to use.

In summary, the present application includes at least one of the following beneficial technical effects:

the seat is fixed on the mounting seat through the fixing assembly, the seat can be prevented from falling, the electric control connecting piece is arranged between the driving piece and the hanging piece, after the driving piece drives the hanging piece to lift the upsetting piece to a set height, the controller can control the electric control connecting piece to cut off the connection between the driving piece and the hanging piece, so that the upsetting piece can fall on the seat freely, a simulator sits on the seat to test, then the driving piece moves downwards, when the driving piece touches the hanging piece, the controller controls the electric control connecting piece to connect the driving piece and the hanging piece, then the driving piece drives the hanging piece to lift and throw the upsetting piece down, the test is repeated, the number of times that the seat can bear impact is tested, the service life of the seat is calculated, and whether the seat is qualified is judged;

through setting up the pendant into guide bar and connecting plate, will upsetting the piece and fix on the connecting plate, when will upsetting the piece and throw away, upset piece and connecting plate can have fixed movement track under the effect of guide bar, make driving piece and automatically controlled connecting piece can be accurate when descending adsorb the connecting plate, ensure that the test can continuously go on.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present application.

Reference numerals: 1. a mounting frame; 11. a support frame; 12. a base plate; 2. a fixing assembly; 21. a cross bar; 22. a longitudinal bar; 23. a pressure lever; 24. a screw rod; 25. a hand wheel; 3. upsetting and forging; 4. a hanger; 41. a guide bar; 42. a connecting plate; 43. a limiting block; 44. mounting a plate; 441. a guide hole; 45. a U-shaped hanging ring; 46. a hoisting ring; 5. an electrically controlled connector; 51. a guide plate; 52. an electromagnet; 53. a high-level sensor; 54. a low-level sensor; 6. a controller; 7. a drive member; 8. a chair.

Detailed Description

The present application is described in further detail below with reference to fig. 1.

The embodiment of the application discloses endurance testing device, refer to fig. 1, including mounting bracket 1, install driving piece 7, the upset 3 of simulation human weight and the pendant 4 of the up-and-down motion of drive upset 3 above mounting bracket 1. The bottom of mounting bracket 1 still is provided with fixed subassembly 2, and seat 8 passes through fixed subassembly 2 to be fixed in the bottom of mounting bracket 1. The driving piece 7 is provided with an air cylinder, an electric control connecting piece 5 is connected between the driving piece 7 and the hanger 4, the electric control connecting piece 5 can control the connection and the disconnection of the driving piece 7 and the hanger 4, the upset piece 3 is hung below the hanger 4, and the upset piece 3 can be close to or far away from the seat 8 under the driving of the driving piece 7 and the control assembly.

The mounting seat comprises a support frame 11 and a bottom plate 12, wherein the support frame 11 is a cubic frame body constructed by a plurality of sectional materials, the bottom plate 12 is a rectangular plate body, and the support frame 11 is fixed on the bottom plate 12 through bolts. The fixed component 2 comprises a cross rod 21, a longitudinal rod 22 and a pressure rod 23, and the number of the cross rod 21, the longitudinal rod 22 and the pressure rod 23 is two. The shank of seat 8 uses the integrative bending of reinforcing bar to weld, and two legs link together around the left and right sides, and two vertical poles 22 wear to establish between the chair leg of the left and right sides and support tightly on the inside wall of chair leg along the fore-and-aft direction of seat 8, and two horizontal poles 21 wear to establish between the chair leg of the left and right sides and prop tightly to both sides, and two horizontal poles 21 are taken on two vertical poles 22, and depression bar 23 is on a parallel with two vertical poles 22 and is pressed on horizontal pole 21. The fixing component 2 further comprises a screw rod 24 fixed on the bottom plate 12 and a hand wheel 25 with internal threads, a waist-shaped hole is formed in the pressing rod 23 in a penetrating mode, and the screw rod 24 penetrates through the pressing rod 23 and is screwed and fixed through the hand wheel 25.

The hanger 4 comprises a mounting plate 44, a guide rod 41 and a connecting plate 42, the mounting plate 44 is fixed on the top of the support frame 11 through bolts, and the driving member 7 is fixed on the mounting plate 44 through bolts. Two guide holes 441 respectively penetrate through two sides of the mounting plate 44, and two guide rods 41 respectively penetrate through the two guide holes 441; a limiting block 43 for limiting the falling height of the guide rod 41 is mounted at one end of the guide rod 41 close to the driving piece 7, the limiting block 43 is an annular block body, the limiting block 43 is sleeved on the guide rod 41, and a bolt is screwed on the side wall of the limiting block 43 to abut against the guide rod 41; the connecting plate 42 is a plate made of a ferrous material, the connecting plate 42 is fixed at one end of the guide rod 41 close to the upset part 3 through a bolt, and a hanging ring 46 is fixed at one side of the connecting plate 42 far away from the guide rod 41. The upsetting member 3 is arranged as a cloth bag filled with a balancing weight, and the upsetting member 3 is hung on a hanging ring 46 of the connecting plate 42 through a U-shaped hanging ring 45.

The electrically controlled connecting piece 5 comprises an electromagnet 52 and a guide plate 51, wherein the guide plate 51 is slidably mounted on the guide shaft through a linear bearing, one side of the guide plate 51 is fixed with the piston rod of the driving piece 7, and the electromagnet 52 is fixed on one side of the guide plate 51 far away from the driving piece 7. The controller 6 is mounted on the support frame 11, and the electromagnet 52 is electrically connected to the controller 6. A high sensor 53 for monitoring the operation of the air cylinder to the highest position and a low sensor 54 for monitoring the operation of the air cylinder to the lowest position are mounted on the driving member 7, and both the high sensor 53 and the low sensor 54 are electrically connected with the controller 6.

During testing, the seat 8 is fixed on the bottom plate 12 through the fixing assembly 2, and the upset part 3 is hung on the hanger 4 and placed on the seat 8; the driving part 7 moves downwards, when the driving part 7 moves downwards to a set position, the low-level sensor 54 monitors the position of the driving part 7 and transmits a signal to the controller 6, the controller 6 controls the electromagnet 52 to suck the connecting plate 42, and meanwhile, the driving part 7 moves upwards to lift the upsetting part 3; when the driving piece 7 moves upwards to a set position, the high-level sensor 53 monitors the position of the driving piece 7 and transmits a signal to the controller 6, the controller 6 controls the electromagnet 52 to release the connecting plate 42, and at the moment, the upset piece 3 falls freely and is hammered on the seat 8; the drive 7 then descends and the cycle continues to repeat for testing.

The implementation principle of the endurance testing device disclosed by the embodiment of the application is as follows: through setting up driving piece 7, hanger 4, automatically controlled connecting piece 5 and upset 3, with connection and disconnection of electromagnet 52 control driving piece 7 and hanger 4, it will mention upset 3 to drive hanger 4 through driving piece 7, when driving piece 7 rose to the settlement height, control electromagnet 52 loosens hanger 4, hanger 4 and upset 3 freely fall under the action of gravity and fall on seat 8, with this action of anthropomorphic dummy sitting on seat 8, constantly circulate the test and count until seat 8 damages, the life of seat 8 is surveyed according to the experimental number of times under the record, thereby judge whether qualified seat 8.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An endurance testing apparatus, characterized in that: comprises an installation frame (1), a fixing component (2) for fixing a seat (8) at the bottom of the installation frame (1), a upsetting piece (3) for simulating the weight of a human body, a hanger (4) sliding along the vertical direction and a driving piece (7) fixed on the installation frame (1) and used for driving the hanger (4), the hanging piece (4) is slidably mounted on the mounting rack (1), the upsetting piece (3) is hung below the hanging piece (4) and is positioned above the fixing component (2), an electric control connecting piece (5) is arranged between the driving piece (7) and the hanging piece (4), the hanging piece (4) is detachably connected with the driving piece (7) through an electric control connecting piece (5), and a controller (6) electrically connected with the electric control connecting piece (5) and the driving piece (7) is arranged on the mounting rack (1).

2. An endurance testing apparatus according to claim 1, wherein: hanger (4) include guide bar (41) and connecting plate (42), the top of mounting bracket (1) is fixed with mounting panel (44), driving piece (7) are fixed on mounting panel (44), run through on mounting panel (44) seted up with guide bar (41) sliding fit's guiding hole (441), connecting plate (42) are fixed guide bar (41) are close to the one end of upsetting piece (3), upsetting piece (3) are fixed connecting plate (42) are kept away from one side of guide bar (41).

3. An endurance testing apparatus according to claim 2, wherein: the electric control connecting piece (5) comprises an electromagnet (52) fixed on the driving piece (7), and the driving piece (7) drives the electromagnet (52) to be close to or far away from the connecting plate (42).

4. An endurance testing apparatus according to claim 3, wherein: the electric control connecting piece (5) further comprises a guide plate (51) fixed on the electromagnet (52), and the guide rod (41) penetrates through the guide plate (51) and is in sliding fit with the guide plate (51).

5. An endurance testing apparatus according to claim 1, wherein: the driving piece (7) is arranged to be an air cylinder, a low-position sensor (54) used for monitoring the operation of the air cylinder to the lowest position and a high-position sensor (53) used for monitoring the operation of the air cylinder to the highest position are arranged on the driving piece (7), and the low-position sensor (54) and the high-position sensor (53) are electrically connected with the controller (6).

6. An endurance testing apparatus according to claim 2, wherein: and a limiting block (43) for limiting the falling height of the guide rod (41) is fixed at one end of the guide rod (41) far away from the connecting plate (42).

7. An endurance testing apparatus according to claim 1, wherein: the mounting rack (1) comprises a support frame (11) and a bottom plate (12), wherein the support frame (11) is in a cubic shape and is built by sectional materials, the support frame (11) is fixed on the bottom plate (12), and the seat (8) is fixed on the bottom plate (12) through the fixing component (2).

8. An endurance testing apparatus according to claim 7, wherein: fixed subassembly (2) include many horizontal pole (21) and vertical pole (22) that prop tight or press from both sides tight seat (8) shank and press horizontal pole (21) with depression bar (23) on vertical pole (22), horizontal pole (21) with vertical pole (22) support the shank lateral wall of tight seat (8), vertically on bottom plate (12) are fixed with lead screw (24), lead screw (24) are worn to establish depression bar (23), install hand wheel (25) of taking internal thread on lead screw (24), hand wheel (25) support tightly on depression bar (23).

9. An endurance testing apparatus according to claim 1, wherein: the upsetting component (3) comprises a cloth bag provided with a balancing weight.