CN205483860U - Truckle resistance test machine for furniture - Google Patents

Abstract

The utility model discloses a caster resistance testing machine for furniture, which comprises a frame and a dynamic load testing device. The load testing device comprises a ball screw arranged horizontally between two upright columns on one side, and one end of the ball screw is connected to the The power output end of the drive motor; a first guide rod parallel to the ball screw is connected between the two columns and is located directly below the ball screw in the vertical direction; The two ends of the supporting plate are slidably connected to the two guiding rods; the upper end of the screw female seat is threaded on the ball screw, and the lower end of the screw female seat is fixedly connected to one end of the supporting plate; it also includes an armless bracket , the armless support includes an intermediate shaft, the bottom of which is provided with a caster fixed wheel shaft; the shaft hole in the center of the intermediate shaft is provided with a loading rod, and the supporting plate is provided with a sleeve through which the loading rod can pass. The utility model has the advantages of simple structure and easy operation, the automation can save manpower, can carry out various tests, and the test results are more accurate and reliable.

Description

Resistance tester for furniture casters

technical field

The utility model belongs to the technical field of furniture detection and relates to a furniture component detection device, in particular to a furniture caster resistance testing machine.

Background technique

The mechanical performance test of furniture is a test that simulates the strength or bearing capacity of each part of the furniture under the condition of one-time or repeated load during normal use and habitual misuse. The test is divided into static load test, durability test and impact test. According to the normal use frequency and possible misuse degree of furniture products under the intended use conditions, according to the loading size and loading times, the strength and durability of furniture are evaluated by furniture mechanics test equipment.

When performing rolling resistance test, rotation resistance test, dynamic load test, static load test, etc. for furniture casters to judge whether the casters meet the standards, the existing furniture mechanics test equipment has many inconveniences, such as messy structure and inconvenient operation. The furniture test piece is placed directly on the ground, which is inconvenient for testing. The manual method is used to adjust the position and distance of the furniture test piece, which is labor-intensive and takes a long time. Therefore, there is an urgent need for a test equipment with regular structure, convenient operation, accurate test results, and time-saving and labor-saving.

In view of this, the utility model is proposed.

Utility model content

The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a furniture caster resistance testing machine with simple structure, automatic test and more accurate test results.

In order to solve the problems of the technologies described above, the basic idea of the technical solution adopted by the utility model is:

A furniture caster resistance testing machine, including a frame and a dynamic load test device, the frame includes four columns respectively located at the four corners of a rectangular bottom plate; the dynamic load test device includes two horizontally arranged on one side The ball screw between the columns, one end of the ball screw is connected to the power output end of the drive motor; between the two columns, the first guide rod parallel to the ball screw is connected at the position directly below the ball screw in the vertical direction; the other two columns There is a second guide rod parallel to the first guide rod and equal in height between them; the two ends of the supporting plate are respectively slidably connected to the two guide rods; The lower end of the seat is fixedly connected to one end of the supporting plate; it also includes an armless support, which includes an intermediate shaft, and the bottom of the intermediate shaft is provided with casters to fix the wheel shaft; the shaft hole in the center of the intermediate shaft is provided with a loading rod, and the supporting plate is provided with a loading rod that can Sleeves that go through.

Furthermore, the bottom of one end of the supporting plate is connected to the first slider sleeved on the first guide rod, and the bottom of the other end of the supporting plate is connected to the second sliding block sleeved on the second guide rod.

Furthermore, barrier strips are provided on the bottom plate, the thickness of the barrier strips is not more than 3 mm, and the upper surface of the barrier strips and the bottom plate are connected in an arc or slope transition.

Further, the guide rod is provided with a sensor, and the sensor and the drive motor are both circuit-connected to the controller, and the human-computer interaction touch panel of the controller is arranged on the frame.

Furthermore, the two guide rods are respectively arranged between the columns on the two long sides of the bottom plate; a horizontal plate parallel to the guide rods is arranged directly above the guide rods;

Furthermore, it also includes a static load test device, which includes the armless support and a counterweight adapted to the loading rod.

Further, it also includes a rotating load test device, the rotating load test device includes a three-arm support, the three-arm support includes an intermediate shaft, the intermediate shaft is provided with a three-arm strut, and the end of each arm strut is provided with a caster to fix the axle; A loading rod higher than the intermediate shaft is arranged in the central shaft hole of the intermediate shaft, and the loading rod is equipped with counterweight weights.

Furthermore, the three-arm struts are equiangularly distributed.

Furthermore, a traction ring is provided on the intermediate shaft.

Furthermore, the counter weight is an open weight.

After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art: the utility model is used for QB/T 4765-2014 furniture casters, the structure is simple and easy to operate, automation can save manpower, and the casters can be rolled Resistance test, dynamic load test and static load test have comprehensive functions, and the test results are more accurate and reliable.

Description of drawings

Fig. 1 is a schematic view of the frame structure of a caster resistance testing machine for furniture of the present invention;

Fig. 2 is a schematic structural diagram of a motorized load test device for a furniture caster resistance test of the present invention (horizontal plate is omitted);

Fig. 3 is a top view of the testing machine shown in Fig. 2;

Fig. 4 is a schematic diagram of cooperation between the pallet shown in Fig. 2 and the armless support;

Fig. 5 is a structural schematic diagram of the utility model static load test device;

Fig. 6 is a structural schematic diagram of the utility model rotating load test device;

Fig. 7 is a top view of the three-arm support shown in Fig. 6;

FIG. 8 is a partial cross-sectional view of the three-arm support shown in FIG. 7 .

In the picture:

11. Bottom plate; 12. Upright column; 13. Horizontal plate; 14. Barrier bar; 21. Motor; 22. Ball screw; 23. Ball screw fixing seat; 24. Ball screw support seat; 25. Screw female seat ; 26, pallet; 27, sleeve; 31, first guide rod; 32, second guide rod; 33, first slider; 34, second slider; 43, caster fixed axle; 44, loading rod; 51, open weight; 61, three-arm support; 62, intermediate shaft; 63, pole; 64, caster fixed axle; 65, loading rod; 66, open weight; 67, traction ring; 9, castor.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described further, to help understand the content of the utility model.

As shown in Fig. 1, a kind of caster wheel resistance testing machine for furniture comprises a frame and a dynamic load test device. A horizontal plate 13 is arranged between the tops of the two columns 12 on the side to strengthen the fixing and reduce the vibration of the frame.

As shown in Figures 2-4, the dynamic load test device is included in two columns 12 on one side, a drive motor 21 is fixed on the top of a column 12, and the power output end of the drive motor 21 is connected to the ball through a coupling. One end of the lead screw 22, the end of the ball screw 22 is placed in the ball screw fixing seat 23, and the other end of the ball screw 22 is fixed in the ball screw support seat 24 on the top of another column 12 of the group, so that the ball screw 22 stay level.

The first guide rod 31 connected directly below the vertical direction of the ball screw 22 between the two columns 12, the ball screw 22 is parallel to the first guide rod 31; between the two columns 12 of the other group, there is The second guide rod 32 is parallel to the first guide rod 31 and has the same position and height.

The upper part of the screw base 25 is sleeved on the ball screw 22, and the screw base 25 is driven to reciprocate along the ball screw 22 by threaded connection when the ball screw 22 rotates; the bottom of the screw base 25 is connected to the supporting plate 26 One end, the bottom of this end of the supporting plate 26 is connected to the first slider 33, the first sliding block 33 is sleeved on the first guide rod 31 directly below the ball screw 22, and the other end of the supporting plate 26 is connected to the second sliding block 34, The second sliding block 34 is sleeved on the second guide rod 32 . A sleeve 27 penetrating through the supporting plate 26 is provided at the center of the supporting plate 26 .

The guide rod is provided with an infrared sensor or a photoelectric sensor (not marked in the figure), and the sensor and the motor are all circuit-connected to the controller, and the sensor can transmit the signal of the number of times that the lead screw female base 25 passes through the sensor to the controller to realize the counting function, control The controller can control and adjust the start and stop of the motor; the human-computer interaction touch screen of the controller peripheral is set on the top of the rack.

It also includes an armless support 41, the armless support 41 includes an intermediate shaft 42, and the bottom of the central axis hole of the intermediate shaft 42 is provided with a caster fixed wheel axle 43. A loading rod 44 is arranged in the central axis hole of the intermediate shaft 42 , and the loading rod 44 is higher than the intermediate shaft 42 ;

Further, the upper surface of the bottom plate 1 is provided with several barrier strips 14, the barrier strips 14 are convex strips with a thickness not greater than 3 millimeters, preferably about 2 millimeters, and the upper surface of the barrier strips 14 and the bottom plate 1 form an arc or a slope transition Connect so that when the caster wheels pass through the obstacle bar 14, large vibrations will not occur.

When carrying out the dynamic load test, the caster 9 to be tested is installed in the central shaft hole of the fixed wheel shaft 43 of the caster wheel, and the loading rod 44 passes through the supporting plate sleeve 27 and enters in the shaft hole of the armless support intermediate shaft 42, so that the supporting plate 26 Fixed connection with the armless support 41; set the number of tests, timing or fixed times stop, etc. (the controller collects information through sensors and controls the motor, etc.) through the human-computer interaction touch screen to improve equipment automation and reduce labor intensity; motor 21 Drive the ball screw 22 to rotate, the ball screw 22 drives the screw base 25 to reciprocate on the ball screw 22, and then the supporting plate 26 drives the caster 9 to be tested on the armless bracket 41 on the bottom plate 1 with the obstacle bar 14 Carry out horizontal reciprocating movement on the plane, and test the durability of the caster 9.

As shown in Figure 5, the static load test device comprises the opening weight 51 configured by the above-mentioned armless support 41 and the loading rod 44 of the armless support 41; In the fixed wheel shaft 43, directly load the open weight 51 of the standard required load on the loading rod 44 to simulate the furniture gravity borne by the caster 9 to be tested, and detect the bearing strength of the caster 9.

As shown in Figures 6-8, the rotating load test device includes a three-arm support 61, and the three-arm support 61 includes an intermediate shaft 62. The intermediate shaft 62 is provided with a three-arm strut 63, and the three-arm struts 63 are equiangularly distributed, that is, any two The angle between the arm struts 63 is 120 degrees, and the force is balanced; the end of each arm strut 63 is provided with a caster fixed wheel shaft 64; the central axis hole of the intermediate shaft 62 is provided with a loading rod 65, which is higher than Intermediate shaft 62; Loading bar 65 is equipped with opening weight 66; During test, 9 bolts of the caster wheel to be tested are installed in the caster fixed wheel shaft 64 shaft hole of three-arm bracket 61, and the opening of the standard required load is loaded on the loading bar 65 The weight 66 simulates the furniture gravity borne by the caster 9 to be tested, and applies a horizontal force to the three-arm bracket through the dynamometer until the caster rotates around the axis to detect the rolling resistance of the caster; further, a convenient dynamometer can be provided on the intermediate shaft 62 Attached traction ring 67.

The above is only a preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made. Retouching should also be regarded as the scope of protection of the present utility model.

Claims (10)

1. A caster resistance testing machine for furniture is characterized in that: it comprises a frame and a dynamic load test device, and the frame comprises four columns respectively positioned at four corners of the rectangular bottom plate; the dynamic load test device comprises a horizontally arranged The ball screw between the two columns on one side, one end of the ball screw is connected to the power output end of the drive motor; between the two columns, a first parallel to the ball screw is connected at the position directly below the ball screw in the vertical direction. guide rod; between the other two columns, there is a second guide rod parallel to the first guide rod and of the same height; the two ends of the supporting plate are respectively slidably connected to the two guide rods; the upper end of the screw female seat is threaded on the ball screw On the rod, the lower end of the screw base is fixedly connected to one end of the supporting plate; it also includes an armless bracket, which includes an intermediate shaft, and the bottom of the intermediate shaft is provided with a caster to fix the wheel shaft; the shaft hole in the center of the intermediate shaft is provided with a loading rod, and the supporting plate A sleeve is provided to allow the loading rod to pass through. 2. The furniture caster wheel resistance testing machine as claimed in claim 1, characterized in that: the bottom of one end of the supporting plate is connected to the first slider which is sleeved on the first guide rod, and the bottom of the other end of the supporting plate is connected and sleeved on the first guide rod. The second slider on the second guide rod. 3. The furniture caster wheel resistance testing machine as claimed in claim 1 or 2, characterized in that: the bottom plate is provided with barrier strips, the thickness of the barrier strips is not more than 3 mm, and the upper surface of the barrier strips and the bottom plate are arc-shaped Or slope transition connection. 4. The caster wheel resistance testing machine for furniture as claimed in claim 1 or 2, characterized in that: the guide rod is provided with a sensor, the sensor and the driving motor are all circuit-connected to the controller, and the human-computer interaction touch panel of the controller is set on the rack. 5. The furniture caster wheel resistance testing machine as claimed in claim 1 or 2, characterized in that: the two guide rods are respectively arranged between the uprights on the two long sides of the base plate; Horizontal plate; the horizontal plate is arranged between the tops of the two columns on its side. 6. The furniture caster wheel resistance testing machine as claimed in claim 1, characterized in that: it also includes a static load test device, the static load test device includes the armless bracket and a counterweight adapted to the loading bar . 7. The caster resistance testing machine for furniture as claimed in claim 1, characterized in that: it also includes a rotating load test device, the rotating load test device comprises a three-arm support, and the three-arm support comprises an intermediate shaft, and the intermediate shaft is provided with a three-arm support. The end of each arm pole is provided with a caster fixed wheel axle; the central axis hole of the intermediate shaft is provided with a loading rod higher than the intermediate shaft, and the loading rod is equipped with a counterweight. 8. The furniture caster wheel resistance testing machine as claimed in claim 7, characterized in that: the three-arm struts are equiangularly distributed. 9. The furniture caster wheel resistance testing machine according to claim 8, characterized in that: the intermediate shaft is provided with a traction ring. 10. The furniture caster wheel resistance testing machine according to any one of claims 6-9, characterized in that: the counterweight weight is an open weight.