CN211317714U - Swivel chair rolling resistance tester - Google Patents

Abstract

The utility model discloses a swivel chair rolling resistance tester, including the testboard, there is the bottom plate through leg joint on the testboard, the fixed slide rail that is equipped with quantity for two on the bottom plate, the both ends of slide rail are equipped with drive sprocket and driven sprocket respectively, drive sprocket is located the output of first motor, first motor is fixed one side of bottom plate, drive sprocket with be connected through the chain between the driven sprocket, one side of slide rail is equipped with the movable block, the movable block is being close to the fixed spout that is equipped with quantity for two in one side of bottom plate, the spout is fixed on the slide rail, lie in between the spout one side of movable block is fixed and is equipped with the horizontal pole, the fixed ratchet that is equipped with on the horizontal pole. Has the advantages that: through the uniform rotation of first motor, drive the chain at the uniform velocity to can drive through the connecting rod with the swivel chair at the uniform velocity removal, can reduce artificial error, and, speed still can change the convenience and detect different speeds.

Description

Swivel chair rolling resistance tester

Technical Field

The utility model relates to a swivel chair gyro wheel test field particularly, relates to a swivel chair rolling resistance tester.

Background

The EN12529 standard caster wheel rolling resistance and rotation resistance testing machine is used for detecting a caster wheel rotation performance test and caster wheel rolling resistance according to the EN12529/EN12527 standard. The magnitude of the resistance depends on: weight, wheel diameter, wheel material, wheel face shape, ground conditions on which the caster wheels rotate, and the like.

The traditional manual pulling cannot really reach the uniform speed.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a swivel chair rolling resistance tester to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a swivel chair rolling resistance tester comprises a test board, wherein a bottom board is connected to the test board through a support, two slide rails are fixedly arranged on the bottom board, a driving chain wheel and a driven chain wheel are respectively arranged at two ends of each slide rail, the driving chain wheel is positioned at the output end of a first motor, the first motor is fixed at one side of the bottom board, the driving chain wheel is connected with the driven chain wheel through a chain, a moving block is arranged at one side of each slide rail, two sliding grooves are fixedly arranged at one side close to the bottom board of the moving block, the sliding grooves are fixed on the slide rails, a cross rod is fixedly arranged at one side of the moving block between the sliding grooves, ratchets are fixedly arranged on the cross rod and matched with the chain, a connecting rod is connected to one side of the moving block through a pressure boosting mechanism, and a supporting mechanism is arranged at one, the connecting rod is connected with the chuck through the supporting mechanism, the chuck is connected with a swivel chair, and the first motor is a servo motor.

Further, the inner wall of the sliding groove is in contact with the sliding rail through a roller.

Further, supercharging device includes the recess, the fixed second motor that is equipped with on the recess, the output of second motor is equipped with the screw rod, the screw rod extend to the inner wall of recess, and with the inner wall of recess is connected through the bearing, the screw rod is located part in the recess is equipped with the nut, one side of nut is fixed and is equipped with first arc, the connecting rod is kept away from the fixed second arc that is equipped with of one end of chuck, first arc with the second arc is connected through the round pin axle.

Further, the supporting mechanism comprises two supporting rods, the supporting rods are symmetrically fixed on the test board, a rotary groove is fixedly formed in one end, close to each other, of each supporting rod, a swing cylinder is arranged between the rotary grooves, movable buttons are fixedly arranged at two ends of the swing cylinder and are matched with the rotary grooves, and the connecting rod penetrates through the swing cylinder.

Furthermore, a plurality of rotary drums are arranged on the inner wall of the swing drum, and the connecting rods are in contact with the rotary drums.

Further, the chuck comprises a clamping groove, the clamping groove is fixed on the connecting rod, and a sealing plate is arranged on one side of the clamping groove.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) the chain is driven to move at a constant speed through the constant-speed rotation of the first motor, so that the swivel chair can be driven to move at a constant speed through the connecting rod, artificial errors can be reduced, and the speed can be changed to be convenient for detecting different speeds.

(2) The utility model discloses a swivel chair, including the screw rod, the nut, the connecting rod, the slide rail, the connecting rod is connected with the swivel groove on the supporting mechanism, the slide rail is connected with the swivel groove on the connecting rod, the connecting rod is connected with the swivel groove on the supporting mechanism, the connecting rod is connected with the swivel groove on the connecting rod, the connecting rod is connected with.

Drawings

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

Fig. 1 is a schematic structural diagram of a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 2 is a cross-sectional view of a bottom plate of a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 3 is a front view of a moving block in a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 4 is a sectional view of a moving block in a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 5 is a front view of a swing tube in a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 6 is a side view of a swing tube in a swivel chair rolling resistance tester according to an embodiment of the present invention;

fig. 7 is a schematic structural view of a chuck in a swivel chair rolling resistance tester according to an embodiment of the present invention;

reference numerals:

1. a test bench; 2. a support; 3. a base plate; 4. a slide rail; 5. a drive sprocket; 6. a driven sprocket; 7. A first motor; 8. a chain; 9. a moving block; 10. a chute; 11. a cross bar; 12. a ratchet; 13. a connecting rod; 14. a chuck; 15. a swivel chair; 16. a groove; 17. a second motor; 18. a screw; 19. a nut; 20. a support bar; 21. rotating the groove; 22. a swing drum; 23. a movable button; 24. a rotating drum; 25. a card slot; 26. and (7) closing the plate.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

the first embodiment is as follows:

referring to fig. 1-7, a swivel chair rolling resistance tester according to an embodiment of the present invention includes a testing table 1, a bottom plate 3 is connected to the testing table 1 through a bracket 2, two sliding rails 4 are fixed on the bottom plate 3, a driving sprocket 5 and a driven sprocket 6 are respectively disposed at two ends of the sliding rails 4, the driving sprocket 5 is located at an output end of a first motor 7, the first motor 7 is fixed at one side of the bottom plate 3, the driving sprocket 5 is connected to the driven sprocket 6 through a chain 8, a moving block 9 is disposed at one side of the sliding rails 4, two sliding grooves 10 are fixed at one side of the moving block 9 close to the bottom plate 3, the sliding grooves 10 are fixed on the sliding rails 4, a cross bar 11 is fixed at one side of the moving block 9 between the sliding grooves 10, and a ratchet 12 is fixed on the cross bar 11, the ratchet 12 with the chain 8 phase-match, one side of movable block 9 is connected with connecting rod 13 through booster mechanism, one side of testboard 1 is equipped with supporting mechanism, connecting rod 13 passes through supporting mechanism is connected with chuck 14, be connected with swivel chair 15 on the chuck 14, first motor 7 is servo motor.

Through the above technical scheme of the utility model, through the uniform velocity rotation of first motor 7, drive chain 8 uniform velocity and remove to can drive through connecting rod 13 with the swivel chair uniform velocity removal, can reduce artificial error, and, speed still can change the convenience and detect the speed of difference.

Example two:

referring to fig. 1 to 7, for the sliding chute 10, the inner wall of the sliding chute 10 contacts with the sliding rail 4 through a roller.

For the supercharging device, the supercharging device comprises a groove 16, a second motor 17 is fixedly arranged on the groove 16, a screw 18 is arranged at the output end of the second motor 17, the screw 18 extends to the inner wall of the groove 16 and is connected with the inner wall of the groove 16 through a bearing, a nut 19 is arranged on the part, located in the groove 16, of the screw 18, a first arc-shaped plate is fixedly arranged on one side of the nut 19, a second arc-shaped plate is fixedly arranged at one end, far away from the chuck 14, of the connecting rod 13, and the first arc-shaped plate is connected with the second arc-shaped plate through a pin shaft.

For the supporting mechanism, the supporting mechanism includes that quantity is two bracing pieces 20, bracing piece 20 symmetry is fixed on testboard 1, the fixed turn trough 21 that is equipped with of one end that bracing piece 20 is close to each other, be equipped with a swing section of thick bamboo 22 between the turn trough 21, the fixed movable button 23 that is equipped with in both ends of a swing section of thick bamboo 22, movable button 23 with turn trough 21 phase-match, connecting rod 13 runs through a swing section of thick bamboo 22.

In the case of the swing cylinder 22, the inner wall of the swing cylinder 22 is provided with a plurality of drums 24, and the connecting rod 13 is in contact with the drums 24.

For the clamping head 14, the clamping head 14 comprises a clamping groove 25, the clamping groove 25 is fixed on the connecting rod 13, and a sealing plate 26 is arranged on one side of the clamping groove 25.

Through the above technical scheme of the utility model, through setting up the gyro wheel with slide rail 4 contacts, thereby can reduce frictional force, through setting up supercharging device, can drive screw rod 18 through second motor 17 and rotate, thereby can remove nut 19, make connecting rod 13 rotatory under the effect of rotary groove 21 and activity button 23 on supporting mechanism, can make the one end that has chuck 14 exert pressure downwards according to lever principle, exert a pressure to the gyro wheel of shifting under the effect of the beneath pole of draw-in groove 25 and swivel chair, can conveniently test under the effect to different pressures, increase the accurate nature of exerting pressure to the swivel chair gyro wheel.

For the convenience of understanding the technical solution of the present invention, the following detailed description is made on the working principle or the operation mode of the present invention in the practical process.

When in actual application, the chain 8 is driven to move at a constant speed through the constant-speed rotation of the first motor 7, so that the swivel chair can be driven to move at a constant speed through the connecting rod 13, artificial errors can be reduced, and the speed can be changed to be convenient for detecting different speeds. Through setting up the gyro wheel with slide rail 4 contacts, thereby can reduce frictional force, through setting up supercharging device, can drive the screw rod 18 through second motor 17 rotatory, thereby can remove nut 19, make connecting rod 13 rotatory under the effect of rotary groove 21 and activity button 23 on supporting mechanism, can make the one end that has chuck 14 exert pressure downwards according to lever principle, exert a pressure to the gyro wheel of shifting under the effect of the below pole of draw-in groove 25 and swivel chair, can conveniently test under the effect of different pressures, increase the accurate nature of exerting pressure to the swivel chair gyro wheel.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The swivel chair rolling resistance tester is characterized by comprising a test board (1), wherein the test board (1) is connected with a bottom board (3) through a support (2), the bottom board (3) is fixedly provided with two slide rails (4), two ends of each slide rail (4) are respectively provided with a driving chain wheel (5) and a driven chain wheel (6), the driving chain wheel (5) is positioned at the output end of a first motor (7), the first motor (7) is fixed on one side of the bottom board (3), the driving chain wheel (5) is connected with the driven chain wheel (6) through a chain (8), one side of each slide rail (4) is provided with a movable block (9), one side of each movable block (9) close to the bottom board (3) is fixedly provided with two sliding chutes (10), and the sliding chutes (10) are fixed on the slide rails (4), lie in between spout (10) one side of movable block (9) is fixed and is equipped with horizontal pole (11), fixed ratchet (12) that are equipped with on horizontal pole (11), ratchet (12) with chain (8) phase-match, one side of movable block (9) is connected with connecting rod (13) through booster mechanism, one side of testboard (1) is equipped with supporting mechanism, connecting rod (13) pass through supporting mechanism is connected with chuck (14), be connected with swivel chair (15) on chuck (14), first motor (7) are servo motor.

2. The rolling resistance tester of the swivel chair according to claim 1, wherein the inner wall of the sliding groove (10) is in contact with the sliding rail (4) through a roller.

3. The swivel chair rolling resistance tester according to claim 1, wherein the pressurizing device comprises a groove (16), a second motor (17) is fixedly arranged on the groove (16), a screw (18) is arranged at the output end of the second motor (17), the screw (18) extends to the inner wall of the groove (16) and is connected with the inner wall of the groove (16) through a bearing, a nut (19) is arranged at the part of the screw (18) located in the groove (16), a first arc-shaped plate is fixedly arranged on one side of the nut (19), a second arc-shaped plate is fixedly arranged at one end, far away from the chuck (14), of the connecting rod (13), and the first arc-shaped plate is connected with the second arc-shaped plate through a pin shaft.

4. The rolling resistance tester of the swivel chair according to claim 1, wherein the supporting mechanism comprises two supporting rods (20), the supporting rods (20) are symmetrically fixed on the test board (1), one ends of the supporting rods (20) close to each other are fixedly provided with rotating grooves (21), a swinging cylinder (22) is arranged between the rotating grooves (21), two ends of the swinging cylinder (22) are fixedly provided with movable buttons (23), the movable buttons (23) are matched with the rotating grooves (21), and the connecting rod (13) penetrates through the swinging cylinder (22).

5. The rolling resistance tester of the swivel chair as claimed in claim 4, wherein the inner wall of the swing cylinder (22) is provided with a plurality of rotating cylinders (24), and the connecting rod (13) is in contact with the rotating cylinders (24).

6. The rolling resistance tester of the swivel chair as claimed in claim 1, wherein the clamping head (14) comprises a clamping groove (25), the clamping groove (25) is fixed on the connecting rod (13), and a sealing plate (26) is arranged on one side of the clamping groove (25).

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