CN116839934B - Office chair truckle durability test device - Google Patents
Office chair truckle durability test device Download PDFInfo
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- CN116839934B CN116839934B CN202310758568.9A CN202310758568A CN116839934B CN 116839934 B CN116839934 B CN 116839934B CN 202310758568 A CN202310758568 A CN 202310758568A CN 116839934 B CN116839934 B CN 116839934B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention discloses an office chair caster durability test device, and relates to the technical field of caster tests; the test device comprises a test bed, wherein two side plates are fixedly arranged on the upper surface of the test bed, a U-shaped frame is fixedly arranged on one surface of the test bed, which is close to the side plates, a fixed seat is arranged between the two side plates, support rods distributed in an annular array are fixedly arranged on the outer wall of the fixed seat, a mounting seat is fixedly arranged on the lower surface of the support rods, and a threaded hole is formed in one surface, far away from the support rods, of the mounting seat; through the reciprocal lift of drive striking dish and striking piece, when striking piece and the upper surface contact of fixing base, the striking piece passes through fixing base, branch and mount pad with decurrent thrust transmission to the truckle, extrudees the gyro wheel of truckle, because the reciprocal thrust of striking dish and striking piece, whether deformation or cracked condition appear in the gyro wheel of staff's observation truckle to the durability test of truckle has been convenient realized, and then the effectual convenience that improves the test of truckle durability.
Description
Technical Field
The invention relates to the technical field of caster tests, in particular to an office chair caster durability test device.
Background
Office chair casters: namely, the universal rotating casters below the office chair comprise movable casters, fixed casters and movable casters with brakes, the movable casters are universal wheels which are called as universal wheels, the structure of the movable casters allows 360-degree rotation, the fixed casters are also called as directional casters, the fixed casters do not have a rotating structure and cannot rotate, two casters are usually matched, and the casters are made of various materials, such as pp casters, PVC casters, PU casters, cast iron casters, nylon casters, TPR casters, iron core nylon casters, iron core PU casters and the like. The prior art has the following problems when testing the durability of casters:
When the durability of the casters is tested in the prior art, the roller wheels of the casters are inconvenient to squeeze in a reciprocating manner, so that the durability test of the casters is inconvenient, and meanwhile, the durability test of the casters with different sizes is inconvenient to realize in the prior art.
Disclosure of Invention
In order to solve the problem that the durability test of the castor is relatively inconvenient; the invention aims to provide an office chair caster durability test device.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an office chair truckle durability test device, includes the test bench, the last fixed surface of test bench installs two curb plates, one side fixed mounting that the test bench is close to the curb plate has U type frame, two be equipped with the fixing base between the curb plate, the outer wall fixed mounting of fixing base has the branch that annular array distributes, the lower fixed surface of branch installs the mount pad, threaded hole has been seted up to the one side that the mount pad kept away from the branch, the one side that the test bench is close to the curb plate is equipped with extrusion testing mechanism, extrusion testing mechanism's surface is equipped with counter weight adjustment mechanism, two be equipped with height adjustment mechanism between curb plate and the two U type frames.
Preferably, a first anti-slip pad is fixedly arranged on one surface, close to the side plate, of the test bed, and an evenly distributed anti-slip seat is fixedly arranged on one surface, far away from the side plate, of the test bed.
Preferably, the extrusion testing mechanism comprises an impact disc, an annular array distributed impact block is fixedly arranged on the lower surface of the impact disc, two fixing plates are arranged on one surface of the impact disc, which is far away from the impact block, two cavities are formed in the lower surface of each fixing plate, a telescopic guide rod is fixedly arranged on the inner wall of each cavity, one surface of the impact disc, which is far away from the impact block, is fixedly connected with a piston end of the telescopic guide rod, a fixing frame is fixedly arranged on one surface of the impact disc, which is far away from the impact disc, a first motor is fixedly arranged on one surface of the fixing plate, a fixing block is fixedly arranged on the outer wall of the first motor, a rotating rod is fixedly arranged on one side of the fixing block, one end of the rotating rod, which is far away from the first motor, is fixedly arranged on one side of the rotating disc, a driving rod is fixedly arranged on one side of the rotating rod, which is far away from the impact disc, a U-shaped seat is fixedly arranged on one side of the fixing frame, the inner wall of the U-shaped seat is rotatably arranged on the rotating shaft, the outer wall of the driving rod is pushed by the driving rod is fixedly arranged on one end, which is far away from the rotating shaft, which is far away from the rotating rod, and one end of the rotating rod is fixedly arranged on the rotating rod.
Preferably, the counterweight adjusting mechanism comprises four compacting plates, a second anti-slip pad is fixedly arranged on one surface of each compacting plate, two first sliding grooves are formed in the inner wall of the fixed frame, two first sliding blocks are slidably connected to the inner wall of each first sliding groove, one side of each first sliding block is fixedly connected with one side of each compacting plate, two double-headed screws are rotatably arranged on one surface of the fixed frame, away from the impact plate, of each fixing frame, one double-headed screw penetrates through one first sliding groove and is in threaded rotary connection with the two first sliding blocks, and handles are fixedly arranged at one ends of the double-headed screws.
Preferably, the height adjusting mechanism comprises four screw rods, two of the screw rods are rotationally connected with two side plates, the other two screw rods are rotationally connected with the U-shaped rack, two second sliding grooves are formed in opposite sides of the side plates and opposite sides of the U-shaped rack, second sliding blocks are slidably connected to inner walls of the second sliding grooves, one screw rod penetrates through one second sliding groove and is rotationally connected with one second sliding block through threads, first connecting rods are fixedly mounted on opposite sides of the two second sliding blocks, one end of each first connecting rod is fixedly connected with one side of a fixing plate, the other two opposite sides of each second sliding block are fixedly mounted with second connecting rods, one end of each second connecting rod is fixedly connected with the outer wall of a fixing base, one end of each screw rod is fixedly mounted with a synchronous wheel, a transmission belt is connected between the synchronous wheels, one side of each side plate, which is far away from the test bench, is fixedly provided with a second motor, a driving output end of each second motor is fixedly connected with one end of each second motor, one end of each second motor is fixedly mounted with one side of a fixing frame, and one side of the fixing frame is fixedly mounted with one side of the fixing frame.
Compared with the prior art, the invention has the beneficial effects that:
1. When the castor to be tested is arranged below the mounting seat, the fixing seat is driven to vertically descend, the fixing seat vertically descends the mounted castor through the supporting rod and the mounting seat, and the roller of the castor is contacted with the first anti-slip pad, so that the height adjustment of the mounting seat is conveniently realized, and further, the subsequent endurance test of the castor with different height sizes is facilitated;
2. The quantitative balancing weights are placed between the two groups of pressing plates and driven to move in opposite directions, the two groups of pressing plates press the quantitative balancing weights, and the quantitative balancing weights are fixed, so that the fixing of the balancing weights is realized conveniently, and the endurance test of the trundles is finished according to the stress condition of the trundles;
3. Through the reciprocal lift of drive striking dish and striking piece, when striking piece and the upper surface contact of fixing base, the striking piece passes through fixing base, branch and mount pad with decurrent thrust transmission to the truckle, extrudees the gyro wheel of truckle, because the reciprocal thrust of striking dish and striking piece, whether deformation or cracked condition appear in the gyro wheel of staff's observation truckle to the durability test of truckle has been convenient realized, and then the effectual convenience that improves the test of truckle durability.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the connection of the fixing base, the supporting rod and the mounting base.
FIG. 3 is a schematic diagram of the connection of the extrusion testing mechanism and the weight adjusting mechanism of the present invention.
Fig. 4 is a schematic view showing a sectional structure of the fixing plate of the present invention.
Fig. 5 is an enlarged schematic view of the portion a in fig. 4 according to the present invention.
Fig. 6 is an enlarged schematic view of the portion B in fig. 4 according to the present invention.
Fig. 7 is a schematic diagram showing the connection of the weight adjusting mechanism and the fixed frame of the present invention.
FIG. 8 is a schematic diagram showing the connection of the height adjusting mechanism, the extrusion testing mechanism and the fixing base.
In the figure: 1. a test bed; 11. a side plate; 12. a U-shaped frame; 13. a fixing seat; 14. a support rod; 15. a mounting base; 16. a threaded hole; 17. a first cleat; 18. an antiskid base; 2. the extrusion testing mechanism; 21. striking the disc; 22. an impact block; 23. a fixing plate; 24. a cavity; 25. a telescopic guide rod; 26. a fixed frame; 27. a first motor; 28. a fixed block; 29. a rotating lever; 3. a rotating disc; 31. a driving rod; 32. a U-shaped seat; 33. a rotating shaft; 34. a push rod; 4. a counterweight adjustment mechanism; 41. a compacting plate; 42. a second cleat; 43. a first chute; 44. a first slider; 45. a double-ended screw; 46. a handle; 5. a height adjusting mechanism; 51. a screw rod; 52. a second chute; 53. a second slider; 54. a first connecting rod; 55. a second connecting rod; 56. a synchronizing wheel; 57. a drive belt; 58. a second motor; 59. and a fixing frame.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Examples: as shown in fig. 1-8, the invention provides an office chair caster durability test device, which comprises a test bed 1, wherein two side plates 11 are fixedly arranged on the upper surface of the test bed 1, a U-shaped frame 12 is fixedly arranged on one surface of the test bed 1, which is close to the side plates 11, a fixed seat 13 is arranged between the two side plates 11, a supporting rod 14 distributed in an annular array is fixedly arranged on the outer wall of the fixed seat 13, a mounting seat 15 is fixedly arranged on the lower surface of the supporting rod 14, a threaded hole 16 is formed on one surface of the mounting seat 15, which is far away from the supporting rod 14, a squeezing test mechanism 2 is arranged on one surface of the test bed 1, which is close to the side plates 11, a counterweight adjusting mechanism 4 is arranged on the surface of the squeezing test mechanism 2, and a height adjusting mechanism 5 is arranged between the two side plates 11 and the two U-shaped frames 12.
Through adopting above-mentioned technical scheme, through setting up fixing base 13 and branch 14, the support frame of simulation office chair lower extreme portion, through setting up mount pad 15 and screw hole 16, after the threaded rod of waiting to test truckle upper end is by the screw to the inside of screw hole 16, be convenient for realize the connection of truckle and mount pad 15, through setting up extrusion testing mechanism 2, be convenient for realize the durability test of truckle, through setting up counter weight adjustment mechanism 4, be convenient for realize carrying out the durability test to the truckle under different gravities, through setting up high adjustment mechanism 5, be convenient for realize the durability test of the truckle of different sizes.
The test bench 1 is close to the one side fixed mounting of curb plate 11 and has first slipmat 17, and the one side fixed mounting that the test bench 1 kept away from curb plate 11 has evenly distributed's slipmat 18.
Through adopting above-mentioned technical scheme, through setting up first slipmat 17, after the truckle of waiting to test is installed in the below of mount pad 15, the gyro wheel and the contact of first slipmat 17 of truckle, the stability of the truckle of first slipmat 17 improvement durability test in-process through setting up antiskid seat 18, and antiskid seat 18 improves the stability of test bench 1.
The extrusion testing mechanism 2 comprises an impact disc 21, an impact block 22 distributed in an annular array is fixedly arranged on the lower surface of the impact disc 21, two fixing plates 23 are arranged on the surface, away from the impact block 22, of the impact disc 21, a fixing frame 26 is fixedly arranged on the surface, away from the impact block 22, of the impact disc 21, a first motor 27 is fixedly arranged on the surface, away from the impact disc 21, of one fixing plate 23, a rotating rod 29 is fixedly arranged at the driving output end of the first motor 27, one end, away from the first motor 27, of the rotating rod 29 is fixedly provided with a rotating disc 3, one side, away from the rotating rod 29, of the rotating disc 3 is fixedly provided with a driving rod 31, one surface, away from the impact disc 21, of the fixing frame 26 is fixedly provided with a U-shaped seat 32, a rotating shaft 33 is rotatably arranged on the inner wall of the U-shaped seat 32, a pushing rod 34 is fixedly arranged on the outer wall of the rotating shaft 33, and one end, away from the rotating shaft 33, of the pushing rod 34 is rotatably connected with one end, away from the rotating disc 3, of the driving rod 31.
Through adopting above-mentioned technical scheme, through opening first motor 27, the actuating shaft of first motor 27 makes dwang 29 rotate, dwang 29 makes actuating lever 31 rotate with the axle center of dwang 3 as the centre of a circle through rotating disc 3, actuating lever 31 makes catch bar 34 reciprocating motion, the tip of catch bar 34 rotates with the axle center of pivot 33 as the centre of a circle, and promote fixed frame 26 reciprocal lift through pivot 33 and U type seat 32, fixed frame 26 promotes striking dish 21 and striking piece 22 reciprocal lift, when striking piece 22 contacts with the upper surface of fixing base 13, striking piece 22 transmits decurrent thrust to the truckle through fixing base 13, branch 14 and mount pad 15, because the reciprocal thrust of striking dish 21 and striking piece 22, observe whether the gyro wheel of truckle appears deformation or split the condition, thereby accomplish the durability test of truckle.
Two cavities 24 are formed in the lower surfaces of the two fixing plates 23, telescopic guide rods 25 are fixedly mounted on the inner walls of the cavities 24, and one surface, away from the impact block 22, of the impact disc 21 is fixedly connected with piston ends of the telescopic guide rods 25.
Through adopting above-mentioned technical scheme, through setting up flexible guide bar 25, flexible guide bar 25 carries out the direction of vertical direction to striking dish 21, makes striking dish 21 keep vertical direction to go up and down, when striking dish 21 descends vertically or rises, the piston end of flexible guide bar 25 extends or contracts.
The outer wall of the first motor 27 is fixedly provided with a fixed block 28, and one side of the fixed block 28 is fixedly connected with the upper surface of one fixed plate 23.
Through adopting above-mentioned technical scheme, through setting up fixed block 28, fixed block 28 supports fixed to first motor 27, improves first motor 27's stability.
The weight adjusting mechanism 4 comprises four compacting plates 41, a second anti-slip pad 42 is fixedly arranged on one surface of each compacting plate 41, two first sliding grooves 43 are formed in the inner wall of the fixed frame 26, first sliding blocks 44 are slidably connected to the inner walls of the two first sliding grooves 43, and one side of each first sliding block 44 is fixedly connected with one side of each compacting plate 41.
Through adopting above-mentioned technical scheme, when balancing weights of different numbers (balancing weights are vertical stacking state) are placed between two sets of pressure strip 41 (a set of pressure strip 41 is two adjacent pressure strip 41), through driving a set of first slider 44 (a set of first slider 44 is two first sliders 44 in a first spout 43) and slides in opposite directions, a set of first slider 44 makes a set of pressure strip 41 remove in opposite directions, and when two sets of pressure strip 41 remove in opposite directions, two sets of pressure strip 41 compress tightly a plurality of balancing weights.
Two double-headed screws 45 are rotatably mounted on one surface of the fixed frame 26 far away from the impact plate 21, one double-headed screw 45 penetrates through one first sliding groove 43 and is in threaded rotation connection with two first sliding blocks 44, and handles 46 are fixedly mounted at one ends of the two double-headed screws 45.
By adopting the above technical scheme, through knob handle 46, handle 46 makes double-end screw 45 rotate, and double-end screw 45 drives a set of first slider 44 to slide in opposite directions or slide in opposite directions along the inner wall of a first spout 43.
The height adjusting mechanism 5 comprises four screw rods 51, wherein two screw rods 51 are rotationally connected with two side plates 11, the other two screw rods 51 are rotationally connected with the U-shaped frame 12, second sliding grooves 52 are respectively formed in opposite sides of the two side plates 11 and opposite sides of the U-shaped frame 12, second sliding blocks 53 are respectively and slidably connected with inner walls of the second sliding grooves 52, one screw rod 51 penetrates through one second sliding groove 52 and is rotationally connected with one second sliding block 53 in a threaded manner, first connecting rods 54 are respectively and fixedly arranged on opposite sides of the two second sliding blocks 53, one end of each first connecting rod 54 is fixedly connected with one side of the fixing plate 23, second connecting rods 55 are respectively and fixedly arranged on opposite sides of the other two second sliding blocks 53, and one end of each second connecting rod 55 is fixedly connected with the outer wall of the fixing seat 13.
Through adopting above-mentioned technical scheme, through driving lead screw 51 rotation, lead screw 51 drive second slider 53 slides along the inner wall vertical direction of second spout 52, and second slider 53 makes impact dish 21 and fixing base 13 vertical direction go up and down through head rod 54 and second connecting rod 55, and branch 14 and mount pad 15 go up and down in step, make the height between mount pad 15 and test bench 1 and the high size of test truckle suit.
One end of each screw rod 51 is fixedly provided with a synchronizing wheel 56, a transmission belt 57 is connected between the synchronizing wheels 56 in a transmission manner, one side plate 11 far away from the test bed 1 is fixedly provided with a second motor 58, and the driving output end of the second motor 58 is fixedly connected with one end of one screw rod 51.
By adopting the above technical scheme, by turning on the second motor 58, the driving shaft of the second motor 58 rotates one screw 51, and one screw 51 rotates the other three screws 51 in the same direction synchronously through the four synchronizing wheels 56 and the driving belt 57.
The end of the second motor 58 is fixedly provided with a fixing frame 59, and one side of the fixing frame 59 is fixedly connected with one side of one side plate 11.
Through adopting above-mentioned technical scheme, through setting up mount 59, mount 59 supports fixedly second motor 58, improves the stability of second motor 58.
Working principle: when the durability test is required to be performed on the casters of the office chair, a worker firstly screws threaded rods at the upper ends of the four casters into the corresponding four threaded holes 16 respectively, installs the four casters below the four installation seats 15, then starts the second motor 58, the driving shaft of the second motor 58 enables one lead screw 51 to rotate, one lead screw 51 enables the other three lead screws 51 to synchronously rotate in the same direction through the four synchronous wheels 56 and the driving belt 57, the four lead screws 51 drive the four second sliding blocks 53 to vertically slide downwards along the inner walls of the corresponding second sliding grooves 52, the four second sliding blocks 53 enable the impact disc 21 and the fixed seat 13 to vertically descend through the two first connecting rods 54 and the two second connecting rods 55, at the moment, the four supporting rods 14, the four installation seats 15 and the four casters synchronously ascend and descend until the rollers of the four casters are contacted with the upper surfaces of the first anti-skid pads 17, and then the second motor 58 is closed, so that the height adjustment of the installation seats 15 is conveniently realized, and the durability test is conveniently performed on the casters with different height dimensions;
then, according to the requirements of the durability test of the caster, a quantitative balancing weight is placed between the two groups of compression plates 41, then a worker respectively rotates the two handles 46, the two handles 46 enable the two double-headed screws 45 to rotate, the two double-headed screws 45 drive the two groups of first sliding blocks 44 to slide along the inner walls of the corresponding first sliding grooves 43 in opposite directions while rotating, the two groups of compression plates 41 and the two groups of second anti-slip pads 42 are enabled to move in opposite directions until the two groups of second anti-slip pads 42 are in close contact with the upper surface and the lower surface of the balancing weight, and the two groups of compression plates 41 compress the plurality of balancing weights and then stop the knob handles 46, so that the fixation of the plurality of balancing weights is conveniently realized, and the durability test of the caster is conveniently completed according to the stress condition of the caster;
Finally, the first motor 27 is started by a worker, the rotating rod 29 is rotated by the driving shaft of the first motor 27, the driving rod 31 is rotated by the rotating disc 3 by taking the axis of the rotating disc 3 as the center of a circle, the pushing rod 34 is reciprocated by the driving rod 31, the fixed frame 26 is pushed to reciprocate by the pushing rod 34 through the rotating shaft 33 and the U-shaped seat 32, the impacting disc 21 and the impacting blocks 22 are pushed to reciprocate synchronously by the fixed frame 26, when the impacting blocks 22 are contacted with the upper surface of the fixed seat 13, the downward pushing force of the impacting blocks 22 is transmitted to the four casters through the fixed seat 13, the four supporting rods 14 and the four mounting seats 15, the rollers of the four casters are extruded, and the worker observes whether the rollers of the four casters deform or crack due to the reciprocating pushing force of the impacting disc 21 and the impacting blocks 22, so that the durability test of the casters is conveniently realized, and the convenience of the durability test of the casters is effectively improved.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (5)
1. The utility model provides an office chair truckle durability test device, includes test bench (1), its characterized in that: the test bench is characterized in that two side plates (11) are fixedly arranged on the upper surface of the test bench (1), a U-shaped frame (12) is fixedly arranged on one surface, close to the side plates (11), of the test bench (1), a fixed seat (13) is arranged between the two side plates (11), a supporting rod (14) distributed in an annular array is fixedly arranged on the outer wall of the fixed seat (13), a mounting seat (15) is fixedly arranged on the lower surface of the supporting rod (14), a threaded hole (16) is formed in one surface, far away from the supporting rod (14), of the mounting seat (15), an extrusion test mechanism (2) is arranged on one surface, close to the side plates (11), of the test bench (1), a counterweight adjusting mechanism (4) is arranged on the surface of the extrusion test mechanism (2), and a height adjusting mechanism (5) is arranged between the two side plates (11) and the two U-shaped frames (12);
The height adjusting mechanism (5) comprises four lead screws (51), wherein two lead screws (51) are rotationally connected with two side plates (11), the other two lead screws (51) are rotationally connected with a U-shaped rack (12), second sliding grooves (52) are formed in opposite sides of the two side plates (11) and opposite sides of the U-shaped rack (12), second sliding blocks (53) are slidingly connected to inner walls of the second sliding grooves (52), one lead screw (51) penetrates through one second sliding groove (52) and is in threaded rotation connection with one second sliding block (53), a first connecting rod (54) is fixedly installed on opposite sides of the two second sliding blocks (53), one end of the first connecting rod (54) is fixedly connected with one side of a fixed plate (23), a second connecting rod (55) is fixedly installed on opposite sides of the other two second sliding blocks (53), and one end of the second connecting rod (55) is fixedly connected with the outer wall of the fixed seat (13); one end of each screw rod (51) is fixedly provided with a synchronous wheel (56), a transmission belt (57) is connected between the synchronous wheels (56) in a transmission way, one side of each side plate (11) far away from the test bed (1) is fixedly provided with a second motor (58), and the driving output end of each second motor (58) is fixedly connected with one end of one screw rod (51); a fixing frame (59) is fixedly arranged at the end part of the second motor (58), and one side of the fixing frame (59) is fixedly connected with one side of one side plate (11);
The extrusion test mechanism (2) comprises an impact disc (21), an annular array distributed impact block (22) is fixedly arranged on the lower surface of the impact disc (21), two fixing plates (23) are arranged on one surface of the impact disc (21) away from the impact block (22), a fixing frame (26) is fixedly arranged on one surface of the impact disc (21) away from the impact block (22), a first motor (27) is fixedly arranged on one surface of the fixing plate (23) away from the impact disc (21), a rotating rod (29) is fixedly arranged at the driving output end of the first motor (27), a rotating disc (3) is fixedly arranged at one end of the rotating rod (29) away from the first motor (27), a driving rod (31) is fixedly arranged at one side of the rotating disc (3) away from the rotating rod (29), a U-shaped seat (32) is fixedly arranged on one surface of the fixing frame (26) away from the impact disc (21), a rotating shaft (33) is rotatably arranged on the inner wall of the U-shaped seat (32), a pushing rod (34) is fixedly arranged on the outer wall of the rotating shaft (33), and one end of the rotating rod (34) away from the rotating rod (31) is fixedly arranged at one end of the rotating rod (33) away from the rotating rod (31);
Two cavities (24) are formed in the lower surfaces of the two fixing plates (23), telescopic guide rods (25) are fixedly arranged on the inner walls of the cavities (24), and one surface, far away from the impact block (22), of the impact disc (21) is fixedly connected with the piston end of each telescopic guide rod (25);
The method comprises the steps of firstly screwing threaded rods at the upper ends of four casters into corresponding four threaded holes (16), installing the four casters below four mounting seats (15), enabling a driving shaft of a second motor (58) to enable one screw rod (51) to rotate, enabling the other three screw rods (51) to synchronously rotate in the same direction through four synchronous wheels (56) and a driving belt (57), enabling four second sliding blocks (53) to vertically slide downwards along the inner walls of corresponding second sliding grooves (52) by the four screw rods (51), enabling an impact disc (21) and a fixing seat (13) to vertically descend through two first connecting rods (54) and two second connecting rods (55), enabling the four supporting rods (14), the four mounting seats (15) and the four casters to synchronously ascend and descend until the rollers of the four casters are in contact with the upper surfaces of first anti-skid pads (17), and then closing the second motor (58), and achieving height adjustment of the mounting seats (15);
The driving shaft of the first motor (27) enables the rotating rod (29) to rotate, the rotating rod (29) enables the driving rod (31) to rotate by taking the axis of the rotating disc (3) as the circle center through the rotating disc (3), the driving rod (31) enables the pushing rod (34) to reciprocate, the pushing rod (34) pushes the fixed frame (26) to reciprocate through the rotating shaft (33) and the U-shaped seat (32), the fixed frame (26) pushes the impact disc (21) and the impact blocks (22) to reciprocate synchronously, and when the impact blocks (22) are in contact with the upper surface of the fixed seat (13), the impact blocks (22) transmit downward pushing force to four casters through the fixed seat (13), the four supporting rods (14) and the four mounting seats (15) to squeeze the rollers of the four casters.
2. The office chair caster durability test apparatus according to claim 1, wherein a first anti-slip pad (17) is fixedly mounted on one surface of the test stand (1) close to the side plate (11), and evenly distributed anti-slip seats (18) are fixedly mounted on one surface of the test stand (1) far from the side plate (11).
3. The office chair caster durability test apparatus according to claim 1, wherein the outer wall of the first motor (27) is fixedly provided with a fixing block (28), and one side of the fixing block (28) is fixedly connected with the upper surface of one fixing plate (23).
4. The office chair caster durability test apparatus according to claim 1, wherein said weight adjusting mechanism (4) comprises four pressing plates (41), a second anti-slip pad (42) is fixedly installed on one surface of each pressing plate (41), two first sliding grooves (43) are formed in the inner wall of said fixed frame (26), first sliding blocks (44) are slidably connected to the inner walls of said two first sliding grooves (43), and one side of each first sliding block (44) is fixedly connected to one side of each pressing plate (41).
5. The office chair caster durability test apparatus according to claim 4, wherein two double-headed screws (45) are rotatably mounted on a surface of the fixed frame (26) away from the striking plate (21), one of the double-headed screws (45) penetrates a first sliding groove (43) and is in threaded rotation connection with two first sliding blocks (44), and handles (46) are fixedly mounted on one ends of the two double-headed screws (45).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310758568.9A CN116839934B (en) | 2023-06-26 | 2023-06-26 | Office chair truckle durability test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310758568.9A CN116839934B (en) | 2023-06-26 | 2023-06-26 | Office chair truckle durability test device |
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| Publication Number | Publication Date |
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| CN116839934A CN116839934A (en) | 2023-10-03 |
| CN116839934B true CN116839934B (en) | 2024-06-07 |
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| CN202310758568.9A Active CN116839934B (en) | 2023-06-26 | 2023-06-26 | Office chair truckle durability test device |
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| CN118961463A (en) * | 2024-08-29 | 2024-11-15 | 江苏戨达新能源装备有限公司 | A new energy vehicle battery pack cell testing and inspection device |
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| CN116839934A (en) | 2023-10-03 |
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