CN222671574U - High-precision multi-direction test equipment for detecting strength of chair legs - Google Patents
High-precision multi-direction test equipment for detecting strength of chair legs Download PDFInfo
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- CN222671574U CN222671574U CN202421061715.3U CN202421061715U CN222671574U CN 222671574 U CN222671574 U CN 222671574U CN 202421061715 U CN202421061715 U CN 202421061715U CN 222671574 U CN222671574 U CN 222671574U
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Abstract
The utility model discloses high-precision multi-direction test equipment for detecting the strength of chair legs, which comprises a test platform (1), wherein a deformation detector (2), a three-axis automatic moving device (3) and a positioning base (4) are arranged on the test platform (1), a pressing plate seat (5) is arranged on the three-axis automatic moving device (3), a ball seat (51) is arranged on the pressing plate seat (5), a ball screw (52) is connected in the ball seat (51), a lower pressing plate (53) is arranged on the ball screw (52), a load sensor is arranged at the bottom of the lower pressing plate (53), a connecting spring (54) is arranged between the lower pressing plate (53) and the pressing plate seat (5), and a plurality of limiting rods (42) for positioning a sample to be tested are movably connected on the positioning base (4). The utility model has the characteristics of automatically adjusting the test position and improving the test precision.
Description
Technical Field
The utility model relates to a chair performance test device, in particular to a high-precision multi-direction test device for detecting the strength of chair legs.
Background
The household chair or office chair is one of necessary tools in the life of people, provides a comfortable seat for people to rest, and plays an indispensable role in the daily life of people. The structure and connectors of the chair are subjected to a load test after manufacture and before use to ensure that they do not deform, break or fail under normal use conditions. During the testing process, the strength test needs to be performed by applying pressure in different directions on the back, the seat, the leg and foot parts of the chair and the like.
When the strength of the chair leg is tested, the compressive strength of the chair leg is generally tested by placing the chair leg on a test platform and then applying a certain force or stress to the chair leg to compress the chair leg. The existing strength testing equipment generally applies pressure downwards in a hydraulic or pneumatic mode, the pressure application position is single, the position of a component to be tested needs to be manually adjusted if the strength of other positions is to be tested, the angle of the pressing plate is fixed and cannot be adjusted, and the strength testing precision of the testing surface can be affected if a certain inclination angle exists between the testing surface of the chair leg and the surface of the pressing plate.
Disclosure of utility model
The utility model aims to provide high-precision multi-direction test equipment for detecting the strength of chair legs. The utility model has the characteristics of automatically adjusting the test position and improving the test precision.
The technical scheme includes that the high-precision multidirectional testing equipment for detecting the strength of chair legs comprises a testing platform, wherein a deformation detector, a triaxial automatic moving device and a positioning base are arranged on the testing platform, a pressing plate seat is arranged on the triaxial automatic moving device, a ball seat is arranged on the pressing plate seat, a ball screw is connected in the ball seat, a lower pressing plate is arranged on the ball screw, a load sensor is arranged at the bottom of the lower pressing plate, a connecting spring is arranged between the lower pressing plate and the pressing plate seat, one end of the connecting spring is hooked on the pressing plate seat, the other end of the connecting spring is hooked on the lower pressing plate, and a plurality of limiting rods for positioning a sample to be tested are movably connected on the positioning base.
In the foregoing high-precision multi-direction test apparatus for detecting the strength of the chair legs, the triaxial automatic moving device comprises a pair of longitudinal moving devices, a transverse moving device is arranged between the two longitudinal moving devices, two ends of the transverse moving device are respectively connected with a sliding table of the longitudinal moving device, a front moving device and a rear moving device are fixedly connected to the sliding table of the transverse moving device, and the sliding table of the front moving device and the rear moving device are connected with the pressing plate seat.
In the high-precision multi-direction test equipment for detecting the strength of the chair legs, the longitudinal moving device, the transverse moving device and the front-back moving device all adopt electric screw rod structures.
In the high-precision multi-direction test equipment for detecting the strength of the chair legs, the bottom of the test platform is made of ferromagnetic materials, and the positioning base is a magnetic base.
In the high-precision multi-direction test equipment for detecting the strength of the chair legs, the limiting rod comprises a fixed rod positioned inside the positioning base, a telescopic rod which movably stretches out of the positioning base is sleeved outside the fixed rod, and a telescopic spring connected with the telescopic rod is arranged at the top of the fixed rod.
In the high-precision multi-direction test device for detecting the strength of the chair legs, the deformation detector adopts a camera or a laser radar.
In the high-precision multi-direction test equipment for detecting the strength of the chair legs, the test surface of the lower pressing plate is provided with the anti-slip pad.
Compared with the prior art, the utility model has the beneficial effects that:
The utility model drives the pressing plate seat to move up and down, left and right and back and forth in multiple directions through the triaxial automatic moving device, adjusts the positions of the lower pressing plate corresponding to the chair legs, so as to carry out strength test on the different positions of the chair legs and detect the weak points of the chair legs;
The positions of the chair legs are limited through the plurality of limiting rods, so that the chair legs are stable and accurate in position and cannot move randomly;
The load sensor is used for detecting the downward test pressure, and the deformation detector is used for detecting the deformation condition of the sample under the condition of different pressures, so that the pressure resistance of different positions of the chair leg is more clear for the tester.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Fig. 2 is a schematic diagram of a connection structure of the platen base and the lower platen.
Fig. 3 is a schematic structural view of the stopper rod.
Fig. 4 is a schematic view of a positioning structure of the limit rod to the chair leg.
The drawing comprises a test platform 1, a deformation detector 2, a three-axis automatic moving device 3, a longitudinal moving device 31, a transverse moving device 32, a front-back moving device 33, a positioning base 4, a positioning base 42, a limiting rod 43, a fixed rod 44, a telescopic rod 45, a telescopic spring 5, a pressing plate seat 51, a ball seat 52, a ball screw rod 53, a lower pressing plate 54, a connecting spring 55, an anti-skid pad 6 and a chair leg.
Detailed Description
The utility model is further illustrated by the following figures and examples, which are not intended to be limiting.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediary, or in communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Examples:
As shown in fig. 1-4, the high-precision multi-direction test device for detecting the strength of chair legs comprises a test platform 1, wherein a deformation detector 2, a three-axis automatic moving device 3 and a positioning base 4 are arranged on the test platform 1, a pressing plate seat 5 is arranged on the three-axis automatic moving device 3, a ball seat 51 is arranged on the pressing plate seat 5, a ball head screw 52 is connected in the ball seat 51, a lower pressing plate 53 is arranged on the ball head screw 52, a load sensor is arranged at the bottom of the lower pressing plate 53, a connecting spring 54 is arranged between the lower pressing plate 53 and the pressing plate seat 5, one end of the connecting spring 54 is hooked on the pressing plate seat 5, the other end of the connecting spring 54 is hooked on the lower pressing plate 53, and a plurality of limiting rods 42 for positioning a sample to be tested are movably connected on the positioning base 4.
In the test, the chair leg 6 to be detected is arranged on the positioning base 4, and the positions of the chair leg 6 are limited through the plurality of limiting rods 42, so that the chair leg 6 is stable and accurate in position and cannot move randomly;
The triaxial automatic moving device 3 drives the pressing plate seat 5 to move up and down, left and right and back and forth in multiple directions, and adjusts the positions of the lower pressing plate 53 corresponding to the chair legs 6, so that strength tests can be carried out on the different positions of the chair legs 6, and weak points of the chair legs 6 are detected;
The test pressure that pushes down is detected through load cell, detects the deformation condition of sample under the condition of receiving different pressures through deformation detector 2 detector to can output information to the display screen, demonstrate on the display screen through three-dimensional or data chart, thereby make the tester more clear the compressive strength performance of chair foot 6 different positions. When the deformation limit of the chair leg or the occurrence of breakage is detected, the triaxial automatic moving device 3 can be controlled to stop the pressing down test.
The triaxial automatic moving device 3 comprises a pair of longitudinal moving devices 31, a transverse moving device 32 is arranged between the two longitudinal moving devices 31, two ends of the transverse moving device 32 are respectively connected with a sliding table of the longitudinal moving devices 31, a front moving device 33 and a rear moving device 33 are fixedly connected to the sliding table of the transverse moving device 32, and the sliding table of the front moving device 33 is connected with the pressing plate seat 5.
The longitudinal moving device 31, the transverse moving device 32 and the front-back moving device 33 all adopt an electric screw rod structure. The electric screw rod structure is adopted to control the moving distance, the pulse quantity of the motor in the triaxial automatic moving device 3 is precisely controlled, the movement is fine and precise, and the testing position is precise.
The bottom of the test platform 1 is made of ferromagnetic materials, and the positioning base 4 is a magnetic base. When the positioning base 4 needs to be fixed, the positioning base 4 is electrified to have magnetism and is attracted and fixed with the test platform 1, and when the positioning base 4 needs to be moved, the positioning base 4 is powered off to lose magnetism, so that the positioning base can be freely moved, the position of the positioning base 4 can be adjusted, and the placement and the test of chair legs 6 with different shapes are facilitated.
The limiting rod 42 comprises a fixed rod 43 positioned in the positioning base 4, a telescopic rod 44 movably extending out of the positioning base 4 is sleeved outside the fixed rod 43, and a telescopic spring 45 connected with the telescopic rod 44 is arranged at the top of the fixed rod 43. When the telescopic rod 44 is not stressed, the telescopic rod 44 ejects out of the positioning base 4 under the action of the telescopic spring 45 to limit the chair legs 6 arranged on the positioning base 4, and when the telescopic rod 44 is subjected to external pressure, the telescopic rod 44 is retracted downwards into the positioning base 4, so that the chair legs 6 cannot be disturbed.
The deformation detector 2 adopts a camera or a laser radar. The image display can be carried out, and the detection is more visual.
The test surface of the lower pressure plate 53 is provided with an anti-slip pad 55. The friction force between the lower pressure plate 53 and the test surface of the chair leg 6 is increased, so that the phenomenon that the lower pressure slides and deviates when the test is started and the accuracy of detection is influenced is avoided.
The working principle is that as shown in figure 4, the five-star chair leg is arranged on the positioning base 4, the positions of two sides of each supporting leg of the five-star chair leg are limited by a plurality of limiting rods 42, and the rest limiting rods 42 retract into the positioning base 4 to be hidden under the pressure of the five-star chair leg;
The lower pressing plate 53 is firstly taken down and then the connecting spring 54 is rotated before the lower pressing plate 53 presses down the five-star chair feet, the angle of the lower pressing plate 53 is adjusted to be parallel to the testing surface of the chair feet 6, and then the connecting spring 54 is arranged to maintain the angle of the lower pressing plate 53 in the testing process, so that the pressing surface of the lower pressing plate 53 is fully attached to the testing surface of the chair feet 6 in the testing process, and the detection accuracy is improved;
The test pressure that pushes down is detected through load cell, detects the deformation condition of sample under the condition of receiving different pressures through deformation detector 2 detector to output detection information to the display screen, demonstrate on the display screen through three-dimensional or data chart, thereby make the compressive strength performance of five-star chair foot different positions more clear for the tester.
Claims (7)
1. The high-precision multi-direction test equipment for detecting the strength of the chair legs is characterized by comprising a test platform (1), wherein a deformation detector (2), a triaxial automatic moving device (3) and a positioning base (4) are arranged on the test platform (1), a pressing plate seat (5) is arranged on the triaxial automatic moving device (3), a ball seat (51) is arranged on the pressing plate seat (5), a ball head screw (52) is connected in the ball seat (51), a lower pressing plate (53) is arranged on the ball head screw (52), a load sensor is arranged at the bottom of the lower pressing plate (53), a connecting spring (54) is arranged between the lower pressing plate (53) and the pressing plate seat (5), one end of the connecting spring (54) is hooked on the pressing plate seat (5), and the other end of the connecting spring (54) is hooked on the lower pressing plate (53), and a plurality of limiting rods (42) for positioning a sample to be tested are movably connected on the positioning base (4).
2. The high-precision multi-direction test equipment for detecting the strength of the chair legs according to claim 1, wherein the triaxial automatic moving device (3) comprises a pair of longitudinal moving devices (31), a transverse moving device (32) is arranged between the two longitudinal moving devices (31), two ends of the transverse moving device (32) are respectively connected with a sliding table of the longitudinal moving devices (31), a front moving device and a rear moving device (33) are fixedly connected to the sliding table of the transverse moving device (32), and the sliding table of the front moving device and the rear moving device (33) are connected with the pressing plate seat (5).
3. The high-precision multi-directional test apparatus for detecting chair leg strength according to claim 2, wherein the longitudinal moving means (31), the lateral moving means (32) and the front-rear moving means (33) are all of an electric screw structure.
4. The high-precision multidirectional test apparatus for detecting the strength of a chair leg according to claim 1, wherein the bottom of the test platform (1) is made of ferromagnetic material, and the positioning base (4) is a magnetic base.
5. The high-precision multidirectional test device for detecting the strength of the chair legs according to claim 1, wherein the limiting rod (42) comprises a fixed rod (43) positioned in the positioning base (4), a telescopic rod (44) which movably extends out of the positioning base (4) is sleeved outside the fixed rod (43), and a telescopic spring (45) connected with the telescopic rod (44) is arranged at the top of the fixed rod (43).
6. The high-precision multi-directional test apparatus for detecting chair leg strength according to claim 1, wherein the deformation detector (2) employs a camera or a lidar.
7. The high-precision multi-directional test apparatus for detecting chair leg strength according to claim 1, wherein the test surface of the lower pressure plate (53) is provided with an anti-slip pad (55).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421061715.3U CN222671574U (en) | 2024-05-15 | 2024-05-15 | High-precision multi-direction test equipment for detecting strength of chair legs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421061715.3U CN222671574U (en) | 2024-05-15 | 2024-05-15 | High-precision multi-direction test equipment for detecting strength of chair legs |
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| CN222671574U true CN222671574U (en) | 2025-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202421061715.3U Active CN222671574U (en) | 2024-05-15 | 2024-05-15 | High-precision multi-direction test equipment for detecting strength of chair legs |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121364105A (en) * | 2025-12-23 | 2026-01-20 | 四川玉扬纺织有限公司 | Multidirectional testing device for tensile property of textile fabric |
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2024
- 2024-05-15 CN CN202421061715.3U patent/CN222671574U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121364105A (en) * | 2025-12-23 | 2026-01-20 | 四川玉扬纺织有限公司 | Multidirectional testing device for tensile property of textile fabric |
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