Folding baby carriage pressure bearing test equipment

Abstract

The invention relates to the technical field of baby carriages, and particularly discloses folding baby carriage pressure-bearing test equipment which comprises a test board and a door-shaped frame, the interior of the test board is of a hollow structure, a transmission mechanism comprising a transmission belt and a rotary table is symmetrically arranged in the test board, and the door-shaped frame is fixedly installed on one side of the top end of the test board. A first horizontal rod is fixedly connected to the bottom of the n-shaped frame, a second horizontal rod is fixedly connected to the top of the n-shaped frame, two symmetrical rotating frames are rotationally connected to the first horizontal rod, a pressure bearing mechanism comprising a semicircular groove and a ball is arranged at the tail end of each rotating frame, and a semicircular bin is fixedly installed on the opposite faces of the two rotating frames. And a detection mechanism comprising a fixed box and a contact switch is arranged in the semicircular bin. The pressure-bearing mechanism and the detection mechanism test whether the wheels and the axle deform or not in different pressure-bearing states at the same time.

Description

Technical Field

[0001] The present invention relates to the technical field of baby carriages, and in particular to a pressure-bearing testing device for a folding baby carriage. Background Art

[0002] During the production process of folding strollers, accessories need to be pressure-tested to detect their pressure-bearing capacity. Among them, wheels and axles are the main pressure-bearing components. The pressure-bearing capacity of wheels and axles is particularly important and must pass the test before they can be installed on folding strollers.

[0003] Some folding stroller pressure testing equipment only uses a conveyor belt to simulate the simple situations encountered by the wheels when pushing the stroller. This makes it difficult to test the wheels for problems such as sideways rolling over obstacles, asynchronous operation of the wheels on both sides, and whether the wheels deform when encountering different obstacles. It is also not convenient for simultaneously testing the stability of the axle under pressure. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a pressure testing device for a folding baby stroller.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A folding stroller pressure test device includes a test bench and a gate-type frame. The test bench has a hollow interior and a transmission mechanism including a transmission belt and a turntable symmetrically arranged therein. The gate-type frame is fixedly mounted on one side of the top of the test bench. The bottom of the gate-type frame is fixedly connected to a first horizontal rod. The top of the gate-type frame is fixedly connected to a second horizontal rod. Two symmetrical rotating frames are rotatably connected to the first horizontal rod. The ends of the rotating frames are provided with a pressure-bearing mechanism including a semicircular groove and a ball bearing. Semicircular bins are fixedly mounted on the backs of the two rotating frames. A detection mechanism including a fixed box and a contact switch is provided in the semicircular bins. It also includes two wheels, wherein the wheels are symmetrically arranged, and the centers of the opposite surfaces of the two wheels are fixedly connected to an axle; The bottom end of the test bench is fixedly connected to a symmetrically arranged annular fixed platform, the top of the fixed platform is provided with an annular groove, four evenly distributed arc-shaped sliders are slidably connected in the annular groove, the tops of the four arc-shaped sliders are fixedly connected to a turntable, the top of the turntable is fixedly installed with a support frame, and the top of the support frame is fixedly installed with a transmission belt; A semicircular hole is provided in the middle of the end of the rotating frame, and three semicircular grooves are provided on the top of the semicircular hole. A plurality of balls are connected in a rolling manner in the three semicircular grooves, and an arc block is provided on the top of each semicircular groove to abut against the balls. The inner wall of the semicircular warehouse close to the rotating frame is fixedly connected with a plurality of obliquely distributed fixing boxes, an installation cavity is opened inside the fixing box, a contact switch is fixedly installed on the top of the installation cavity, and an embedded hole is opened at the bottom of the contact switch.

[0006] Preferably, two hollow holes are opened on the top of the test bench facing the vehicle, and the two hollow holes are respectively facing the two transmission belts.

[0007] Preferably, the transmission belt is rotated by a drive motor built into the top of the support frame, and two arc-shaped obstruction bars are fixedly mounted on the outer wall of the transmission belt, and two rectangular obstruction bars are also fixedly mounted on the outer wall of the transmission belt.

[0008] Preferably, the bottom of the turntable of the inner ring of the fixed table is fixedly connected to a driven gear, the inner wall of the fixed table is fixedly installed with a first motor, and the output shaft of the first motor is fixedly connected to a driving gear meshing with the driven gear.

[0009] Preferably, pressure sensors are fixedly connected to the top and both sides of the arc-shaped block, the pressure sensors are electrically connected to an external computer, and two bolt holes are provided at the end of the rotating frame.

[0010] Preferably, the bottom end of the rotating frame is rotatably connected to a rotating block, and the top of the rotating block is provided with a pressure-bearing mechanism which has the same structure as the rotating frame but is symmetrical to it.

[0011] Preferably, two symmetrical first electric telescopic rods are rotatably connected to the second horizontal rod, and the telescopic ends of the two first electric telescopic rods are rotatably connected to the tops of the two rotating frames respectively. The first electric telescopic rods and the rotating parts of the rotating frames on the same vertical plane are rotatably connected to a ring slidably connected to the second horizontal rod, and a U-shaped frame is fixedly connected between the side walls of the two rings. Second motors are fixedly installed on the side walls at both ends of the door-shaped frame, and the output shafts of the two second motors are fixedly connected to screws, and the two screws are respectively threadedly connected to the centers of the two U-shaped frames.

[0012] Preferably, a connecting plate is movably connected to the middle of the opposite surfaces of the two rotating frames through a slot, and vertical columns are symmetrically arranged on the top of the connecting plate. A plurality of horizontal through slots are opened on the columns, and a plurality of gravity blocks are slidably connected to the two columns.

[0013] Preferably, a plurality of slide grooves are evenly opened on the top of the semicircular warehouse away from the rotating frame, and a semicircular baffle is slidably connected to the slide groove through a slider. The side wall of the semicircular baffle close to the rotating frame is fixedly connected to a fixed box that is symmetrical to the fixed box of the semicircular warehouse one by one, and three evenly distributed second electric telescopic rods are fixedly connected to the inner wall of the semicircular warehouse, and the telescopic end of the second electric telescopic rod is fixedly connected to the side wall of the semicircular baffle.

[0014] Preferably, a movable block is slidably connected to the bottom of the installation cavity, a contact rod is fixedly connected to the top of the movable block, the length of the contact rod is less than the depth of the embedded hole, a spring is abutted between the top of the movable block and the top of the installation cavity, and a roller is rotatably connected to the bottom end of the movable block.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a transmission mechanism, which drives the wheels and axles to rotate through a transmission belt to simulate the rotation of the wheels during normal operation. The transmission belt can also be affected by the rotation of the turntable to change the angle between the transmission belt and the wheel synchronously or asynchronously. The obstruction bars of different shapes are used to simulate the bumpy effect caused by the wheels rolling over speed bumps, obstacles, etc. when rotating, which is convenient for testing whether the wheels and axles are deformed under pressure. The pressure test can test the stability and other performance of the wheels and axles under various working conditions, so that the pressure test results are more accurate when supported by sufficient data.

[0016] The present invention provides a rotating frame and a pressure-bearing mechanism. The rotating frame can fix the axle to stabilize the position of the axle and the wheel, and can cooperate with the pressure-bearing mechanism and the detection mechanism to simultaneously test whether the wheel and the axle are deformed. The pressure-bearing mechanism directly abuts against the outer wall of the axle through multiple groups of balls, and combines with the pressure sensor to record the force changes in all directions of the arc block to detect whether the axle is deformed and the magnitude of the deformation.

[0017] The present invention provides a semicircular bin and a detection mechanism. The semicircular bin moves synchronously with the rotating frame and covers the top of the wheel, so that the rollers of the detection mechanism respectively abut against the side walls on both sides of the top of the wheel, roll as the wheel rotates, and judge the deformation of the wheel according to the contact signal of the contact switch. The contact switch combined with the contact rod and the movable block can produce up to two contact signals at the same time, and the degree of deformation of the wheel can be judged by the number of contact signals.

[0018] The present invention sets a U-shaped frame and a semicircular baffle. In actual tests, the length of the axle and the width of the wheel vary with different baby stroller models. Therefore, the two U-shaped frames can be controlled to rotate to push the first electric telescopic rod and the rotating frame on the same vertical plane to move synchronously, and the spacing between the two pressure-bearing mechanisms and the two detection mechanisms can be flexibly adjusted, so that the test can synchronously adapt to wheels and axles of different specifications. The spacing between the detection mechanism on the semicircular baffle and the detection mechanism on the semicircular bin can be adjusted by controlling the second electric telescopic rod to push the semicircular baffle to slide along the slide groove to adapt to wheels of different specifications.

[0019] The present invention provides a connecting plate, and weight blocks are placed on the columns and the connecting plate to simulate the load-bearing state of the baby carriage. During the test process, a weight block with a weight smaller than the rated weight can be placed for testing first, then a weight block with a weight equal to the rated weight can be placed for testing, and finally a weight block with a weight greater than the rated weight can be placed for testing. By performing pressure tests on the wheels and axles with three groups of different pressure-bearing weights, the pressure-bearing capacity of the wheels and axles can be fully tested, and the pressure-bearing limits of the wheels and axles can be tested, so that the test results of the wheels and axles are more reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 2 This is a schematic diagram of the internal structure of a test bench for a folding stroller pressure test device proposed by the present invention; Figure 3 This is a schematic diagram of the transmission mechanism structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 4 This is a schematic diagram of the structure of the turntable and fixed platform of the folding baby stroller pressure testing equipment proposed by the present invention; Figure 5 This is a schematic diagram of the second motor structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 6 This is a schematic diagram of the U-shaped frame structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 7 This is a schematic diagram of the structure of a gravity block of a folding baby stroller pressure test device proposed by the present invention; Figure 8 This is a schematic diagram of the column structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 9 This is a schematic structural diagram of the pressure-bearing mechanism of a folding baby stroller pressure-bearing testing device proposed by the present invention; Figure 10 This is a schematic diagram of the arc block structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 11 This is a schematic diagram of the semicircular chamber structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 12 This is a schematic diagram of the semicircular baffle structure of a folding baby stroller pressure testing device proposed by the present invention; Figure 13 This is a schematic diagram of the structure of the second electric telescopic rod of the folding baby stroller pressure testing equipment proposed by the present invention; Figure 14 This is a schematic diagram of the structure of the detection mechanism of a folding baby stroller pressure test device proposed by the present invention; Figure 15 This is a schematic diagram of the contact switch structure of a folding stroller pressure testing device proposed by the present invention.

[0021] In the figure: 1. test bench; 2. hollow hole; 3. transmission mechanism; 4. transmission belt; 5. blocking bar; 6. support frame; 7. turntable; 8. arc-shaped slider; 9. driven gear; 10. fixed platform; 11. annular groove; 12. first motor; 13. driving gear; 14. wheel; 15. axle; 16. portal frame; 17. first horizontal rod; 18. second horizontal rod; 19. rotating frame; 20. pressure mechanism; 21. semicircular hole; 22. semicircular groove; 23. ball bearing; 24. arc block; 25. pressure Force sensor; 26. Bolt hole; 27. Rotating block; 28. First electric telescopic rod; 29. ​​U-shaped frame; 30. Second motor; 31. Screw; 32. Semicircular bin; 33. Slide; 34. Semicircular baffle; 35. Second electric telescopic rod; 36. Detection mechanism; 37. Fixing box; 371. Mounting cavity; 38. Contact switch; 39. Embedded hole; 40. Movable block; 41. Contact rod; 42. Spring; 43. Roller; 44. Connecting plate; 45. Column; 46. Through slot; 47. Gravity block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] Reference Figure 1-15 A folding baby stroller pressure test device includes a test bench 1 and a door frame 16. The interior of the test bench 1 is a hollow structure. A transmission mechanism 3 including a transmission belt 4 and a turntable 7 is symmetrically arranged inside the test bench 1. A door frame 16 is fixedly installed on one side of the top of the test bench 1. A first horizontal rod 17 is fixedly connected to the bottom of the door frame 16. A second horizontal rod 18 is fixedly connected to the top of the door frame 16. Two symmetrical rotating frames 19 are rotatably connected to the first horizontal rod 17. A pressure mechanism 20 including a semicircular groove 22 and a ball 23 is provided at the end of the rotating frame 19. Semicircular bins 32 are fixedly installed on the back surfaces of the two rotating frames 19. A detection mechanism 36 including a fixed box 37 and a contact switch 38 is provided in the semicircular bin 32. The vehicle further comprises wheels 14, which are symmetrically arranged in pairs, and an axle 15 is fixedly connected to the centers of the opposite surfaces of the two wheels 14; The bottom end of the test bench 1 is fixedly connected to a symmetrically arranged annular fixed platform 10, and an annular groove 11 is opened on the top of the fixed platform 10. Four evenly distributed arc-shaped sliders 8 are slidably connected in the annular groove 11. The tops of the four arc-shaped sliders 8 are fixedly connected to a turntable 7. The top of the turntable 7 is fixedly installed with a support frame 6, and the top of the support frame 6 is fixedly installed with a transmission belt 4; A semicircular hole 21 is provided in the middle of the end of the rotating frame 19. Three semicircular grooves 22 are provided on the top of the semicircular hole 21. Several balls 23 are rollingly connected in the three semicircular grooves 22. An arc block 24 is provided on the top of each semicircular groove 22 to abut against the ball 23. Several obliquely distributed fixed boxes 37 are fixedly connected to the inner wall of the semicircular warehouse 32 close to the rotating frame 19. A mounting cavity 371 is provided inside the fixed box 37. A contact switch 38 is fixedly installed on the top of the mounting cavity 371. An embedded hole 39 is provided at the bottom of the contact switch 38. The transmission mechanism 3 drives the wheel 14 and the axle 15 to rotate through the transmission belt 4 to simulate the rotation of the wheel 14 during normal operation. The transmission belt 4 can also be affected by the rotation of the turntable 7 to change the angle between the transmission belt 4 and the wheel 14 synchronously or asynchronously, so that the pressure test can test the stability and other performance of the wheel 14 and the axle 15 under various working conditions, so that the pressure test results are more accurate when supported by sufficient data. The rotating frame 19 can fix the axle 15 to stabilize the position of the axle 15 and the wheel 14, and can cooperate with the pressure mechanism 20 to test whether the axle 15 is deformed. The pressure mechanism 20 is driven by multiple sets of ball bearings. 23 directly abuts against the outer wall of the axle 15, and combines with the pressure sensor 25 to record the force changes in all directions of the arc block 24 to detect whether the axle 15 has been deformed. The semicircular bin 32 moves synchronously with the rotating frame 19 and covers the top of the wheel 14, so that the rollers 43 of the detection mechanism 36 abut against the side walls on both sides of the top of the wheel 14 respectively, and roll with the rotation of the wheel 14, and judge the deformation of the wheel 14 according to the contact signal of the contact switch 38, wherein the contact switch 38 can produce up to two contact signals at the same time in combination with the contact rod 41 and the movable block 40, and the deformation degree of the wheel 14 can be judged by the number of contact signals.

[0024] As a technical optimization solution of the present invention, two hollow holes 2 are opened on the top of the test bench 1, facing the two drive belts 4. The hollow holes 2 facilitate the placement of the wheels 14 and ensure that the drive belts 4 can still contact the wheels 14 after rotating.

[0025] As a technical optimization solution of the present invention, the drive belt 4 is rotated by a drive motor built into the top of the support frame 6. Two arc-shaped and two rectangular obstruction bars 5 are fixedly mounted on the outer wall of the drive belt 4. The different shapes of the obstruction bars 5 simulate the jolting effect of the wheel 14 running over speed bumps, obstacles, etc., facilitating testing whether the wheel 14 and axle 15 deform under load.

[0026] As a technical optimization solution of the present invention, a driven gear 9 is fixedly connected to the bottom of the turntable 7 within the inner ring of the fixed platform 10. A first motor 12 is fixedly mounted on the inner wall of the fixed platform 10. The output shaft of the first motor 12 is fixedly connected to a drive gear 13 that meshes with the driven gear 9. Rotation of the first motor 12 drives the drive gear 13 and the driven gear 9, thereby rotating the turntable 7 and the drive belt 4 at different angles, facilitating testing of the impact of the bumps and vibrations of the barrier strip 5 on the wheel 14 and axle 15 at different angles.

[0027] As a technical optimization solution of the present invention, pressure sensors 25 are fixedly connected to the top and both sides of the arc block 24. The pressure sensors 25 are electrically connected to an external computer. Two bolt holes 26 are provided at the end of the rotating frame 19. The pressure change curves of each pressure sensor 25 are used to determine whether the axle 15 has deformed and the extent of the deformation.

[0028] As a technical optimization solution of the present invention, a rotating block 27 is rotatably connected to the bottom end of the rotating frame 19. A pressure-bearing mechanism 20 with the same structure as the rotating frame 19 but symmetrical to it is installed on the top of the rotating block 27. The rotating block 27 facilitates the abutment of the rotating frame 19 with the axle 15. The rotating block 27 can then be manually rotated to connect the rotating block 27 and the rotating frame 19 into a single unit, thereby securing the axle 15 and simultaneously putting the pressure-bearing mechanism 20 into operation.

[0029] As a technical optimization solution of the present invention, two symmetrical first electric telescopic rods 28 are rotatably connected to the second horizontal rod 18. The telescopic ends of the two first electric telescopic rods 28 are rotatably connected to the tops of the two rotating frames 19. The rotating parts of the first electric telescopic rods 28 and the rotating frames 19 on the same vertical plane are rotatably connected to a circular ring slidably connected to the second horizontal rod 18. A U-shaped frame 29 is fixedly connected between the side walls of the two circular rings. Second motors 30 are fixedly mounted on the side walls of the gate frame 16. The output shafts of the two second motors 30 are fixedly connected to screws 31, which are respectively threadedly connected to the centers of the two U-shaped frames 29. In actual testing, the length of the axle 15 varies with different baby stroller models. Therefore, by controlling the rotation of the second motor 30 to drive the rotation of the screw 31, the two U-shaped frames 29 can push the first electric telescopic rods 28 and the rotating frames 19 on the same vertical plane to move synchronously. This allows the spacing between the two pressure-bearing mechanisms 20 and the two detection mechanisms 36 to be flexibly adjusted, making the test adaptable to wheels 14 and axles 15 of different specifications.

[0030] As a technical optimization solution of the present invention, a connecting plate 44 is movably connected in the middle of the opposite surfaces of the two rotating frames 19 through a slot, and vertical columns 45 are symmetrically arranged on the top of the connecting plate 44. Several horizontal through slots 46 are opened on the columns 45, and several gravity blocks 47 are slidably connected to the two columns 45. The gravity block 47 is placed on the column 45 and the connecting plate 44 to simulate the load-bearing state of the baby carriage. The connecting plate 44 can be manually installed and adjusted in position when adjusting the distance between the two rotating frames 19. During the test, a gravity block 47 with a weight less than the rated weight can be placed first for testing. After placing the gravity block 47, a pin is used to insert it into the through slot 46 to prevent the gravity block 47 from shaking and affecting the test results. Then, a gravity block 47 with a weight equal to the rated weight is placed for testing. Finally, a gravity block 47 with a weight greater than the rated weight is placed for testing. By performing pressure tests on the wheels 14 and the axles 15 with three sets of different pressure weights, the pressure-bearing capacity of the wheels 14 and the axles 15 can be fully tested, as well as the pressure-bearing limits of the wheels 14 and the axles 15 can be tested, making the test results of the wheels 14 and the axles 15 more reliable.

[0031] As a technical optimization solution of the present invention, a plurality of chutes 33 are evenly opened on the top of the side of the semicircular bin 32 away from the rotating frame 19. A semicircular baffle 34 is slidably connected to the chute 33 via a slider. A fixing box 37 that is symmetrical one-to-one with the fixing box 37 of the semicircular bin 32 is fixedly connected to the side wall of the semicircular baffle 34 on the side close to the rotating frame 19. Three evenly distributed second electric telescopic rods 35 are fixedly connected to the inner wall of the semicircular bin 32. The telescopic ends of the second electric telescopic rods 35 are fixedly connected to the side wall of the semicircular baffle 34. In actual tests, the widths of the wheels 14 of different models of baby strollers are also different. The spacing between the detection mechanism 36 on the semicircular baffle 34 and the detection mechanism 36 on the semicircular bin 32 can be adjusted by controlling the second electric telescopic rod 35 to push the semicircular baffle 34 to slide along the chute 33 to adapt to wheels 14 of different specifications.

[0032] As a technical optimization solution of the present invention, a movable block 40 is slidably connected to the bottom of the mounting cavity 371, and a contact rod 41 is fixedly connected to the top of the movable block 40. The length of the contact rod 41 is less than the depth of the embedded hole 39. A spring 42 is abutted between the top of the movable block 40 and the top of the mounting cavity 371, and a roller 43 is rotatably connected to the bottom of the movable block 40. When the wheel 14 deforms, the contact roller 43 at the deformed position of the wheel 14 can push the roller 43 and the movable block 40 to slide along the mounting cavity 371, thereby causing the contact rod 41 to approach the contact switch 38, and the contact switch 38 triggers a contact signal. When the deformation of the wheel 14 is greater, the movable block 40 contacts the contact switch 38, and the contact rod 41 is inserted into the embedded hole 39. At this time, the contact switch 38 triggers two contact signals, which can determine that the deformation of the wheel 14 is serious. The position and number of contact signals from the contact switch 38 can effectively determine the deformation of the wheel 14 under the current pressure state.

[0033] When the present invention is in use, the two wheels 14 are placed on the top of the two transmission belts 4 through the two hollow holes 2 respectively, and the telescopic ends of the two first electric telescopic rods 28 are controlled to extend, pushing the two rotating frames 19 and the two semicircular bins 32 to rotate around the first horizontal rod 17 until the semicircular holes 21 overlap the top of the axle 15. At this time, the two first electric telescopic rods 28 are powered off, and the two rotating blocks 27 are manually rotated so that the rotating blocks 27 abut against the middle of the end of the rotating frame 19. Bolts are used to bolt the end of the rotating frame 19 to the bolt holes 26 at the end of the rotating blocks 27. At this time, the balls 23 in the two rotating frames 19 and the rotating blocks 27 abut against the top and bottom of the axle 15 respectively, and at the same time, the rollers 43 in the two semicircular bins 32 abut against the two side walls of the top of the two wheels 14 respectively.

[0034] If different axle 15 lengths or wheel 14 widths are to be tested, the two second motors 30 can be started to drive the two screws 31 to rotate, thereby driving the two U-shaped frames 29 to drive the two sets of first electric telescopic rods 28 and the rotating frame 19 to move closer to or away from each other, and at the same time drive the two semicircular warehouses 32 to move, so that the two rotating frames 19 can be adapted to axles 15 of different lengths. The second electric telescopic rod 35 can also be started to extend to drive the semicircular baffle 34 to slide along the slide groove 33, thereby driving the detection mechanism 36 on the semicircular baffle 34 to move to adapt to wheels 14 of different widths.

[0035] At this point, preparations are complete and testing can begin. Weight blocks 47 are inserted onto the two uprights 45. The cumulative weight of the weight blocks 47 is less than the rated weight of the wheels 14 and axles 15. A latch is inserted into a set of through slots 46 above the weight blocks 47 to prevent the weight blocks 47 from shaking. The two drive belts 4 are activated to rotate the wheels 14 and axles 15. As the drive belts 4 rotate, the two curved and rectangular barrier bars 5 sequentially pass over the two wheels 14, causing a jolting effect on the wheels 14. The two wheels 14 and axles 15 vibrate due to the jolting, driving the two rotating frames 19 and the two semicircular bins 32 to vibrate synchronously. Furthermore, the balls 23 in the three sets of semicircular grooves 22 on one rotating frame 19 continuously exert force on the curved blocks 24 under the dual action of the pressure of the weight blocks 47 and the vibration of the axle 15. This causes the six pressure sensors 25 on the outside of each set of curved blocks 24 to continuously record the force variation curve as the axle 15 rotates. Simultaneously, the rotation of the wheels 14 drives the rotation of each roller 43.

[0036] When the axle 15 is deformed by force, the balls 23 and arc blocks 24 in the three groups of semicircular grooves 22 in the two rotating frames 19 will change under the force of the axle 15, so that the pressure change curve recorded by each group of six pressure sensors 25 is irregular, which can be used to determine that the axle 15 has been deformed. When the wheel 14 is deformed by force, whenever the deformed part contacts the roller 43, the roller 43 and the movable block 40 can be pushed to slide along the mounting cavity 371, so that the contact rod 41 first approaches the contact switch 38. At this time, the contact switch 38 triggers a contact signal, which can be used to determine that the wheel 14 has been deformed. If the deformation is large and the movable block 40 is pushed to touch the contact switch 38, and the contact rod 41 is connected to the embedded hole 39, the contact switch 38 triggers two contact signals, which can be used to determine that the wheel 14 is severely deformed. The position of the contact signal can determine the direction of the deformation of the wheel 14.

[0037] When the wheel 14 and the axle 15 do not deform under the action of the current gravity block 47, the pressure change curve of each pressure sensor 25 is in a stable state, and there will be obvious fluctuations every time the wheel 14 passes the obstacle bar 5. At the same time, the force exerted by the top of the wheel 14 on each roller 43 is balanced, and the movable block 40 will not slide along the installation cavity 371, that is, the contact rod 41 and the movable block 40 will not touch the contact switch 38, and the contact switch 38 has no contact signal. At this time, the two first motors 12 are controlled to rotate, driving the driving gear 13 and the driven gear 9 to rotate, so that the rotating The platform 7, i.e., the arc-shaped slider 8, rotates a certain angle along the annular groove 11 and then stops. At this time, the transmission belt 4 rotates synchronously while the direction of the wheel 14 remains unchanged, that is, there is an angle between the transmission belt 4 and the direction of the wheel 14, so that the angle of each obstacle bar 5 on the bumpy effect of the wheel 14 changes. Repeat the above operation, observe the pressure change curve and contact signal to determine the deformation of the wheel 14 and the axle 15. If there is still no deformation, continue to rotate the angle of the transmission belt 4 or adjust the angles of the two transmission belts 4 so that the angles of the two transmission belts 4 are different and perform the above pressure test.

[0038] After the above test is completed, gravity blocks 47 are added to the two columns 45. The cumulative weight of the gravity blocks 47 is equal to the rated weight of the wheels 14 and the axles 15. The above test steps are repeated to perform the pressure test.

[0039] After the above test is completed, gravity blocks 47 are further added to the two columns 45. The cumulative weight of the gravity blocks 47 is greater than the rated weight of the wheels 14 and the axles 15. The above test steps are repeated to perform the pressure test.

[0040] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

[0041] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A folding baby carriage pressure test device, comprising a test bench (1) and a door frame (16), characterized in that: The interior of the test bench (1) is a hollow structure. A transmission mechanism (3) including a transmission belt (4) and a turntable (7) is symmetrically arranged inside the test bench (1). A door frame (16) is fixedly installed on one side of the top of the test bench (1). The bottom of the door frame (16) is fixedly connected to a first horizontal rod (17). The top of the door frame (16) is fixedly connected to a second horizontal rod (18). Two symmetrical rotating frames (19) are rotatably connected to the first horizontal rod (17). A pressure-bearing mechanism (20) including a semicircular groove (22) and a ball (23) is arranged at the end of the rotating frame (19). Semicircular bins (32) are fixedly installed on the backs of the two rotating frames (19). A detection mechanism (36) including a fixed box (37) and a contact switch (38) is arranged in the semicircular bin (32). It also includes wheels (14), wherein the wheels (14) are symmetrically arranged in pairs, and the centers of the opposite surfaces of the two wheels (14) are fixedly connected to an axle (15); The bottom end of the test bench (1) is fixedly connected to a symmetrically arranged annular fixed platform (10), the top of the fixed platform (10) is provided with an annular groove (11), four evenly distributed arc-shaped sliders (8) are slidably connected in the annular groove (11), the tops of the four arc-shaped sliders (8) are fixedly connected to a turntable (7), the top of the turntable (7) is fixedly installed with a support frame (6), and the top of the support frame (6) is fixedly installed with a transmission belt (4); A semicircular hole (21) is provided at the middle of the end of the rotating frame (19), and three semicircular grooves (22) are provided at the top of the semicircular hole (21). A plurality of balls (23) are rollingly connected in the three semicircular grooves (22), and an arc block (24) is provided at the top of each semicircular groove (22) to abut against the balls (23); A plurality of obliquely distributed fixing boxes (37) are fixedly connected to the inner wall of the semicircular warehouse (32) close to the rotating frame (19), and a mounting cavity (371) is provided inside the fixing box (37). A contact switch (38) is fixedly installed on the top of the mounting cavity (371), and an embedded hole (39) is provided at the bottom of the contact switch (38).

2. The folding baby stroller pressure test device according to claim 1, characterized in that: The top of the test bench (1) is provided with two hollow holes (2) facing the vehicle, and the two hollow holes (2) are respectively facing the two transmission belts (4).

3. The folding baby stroller pressure test device according to claim 1, characterized in that: The transmission belt (4) is rotated by a drive motor built into the top of the support frame (6), and two arc-shaped obstruction bars (5) are fixedly mounted on the outer wall of the transmission belt (4). Two rectangular obstruction bars (5) are also fixedly mounted on the outer wall of the transmission belt (4).

4. The folding baby stroller pressure test device according to claim 1, characterized in that: The bottom of the turntable (7) on the inner ring of the fixed platform (10) is fixedly connected to a driven gear (9), the inner wall of the fixed platform (10) is fixedly mounted with a first motor (12), and the output shaft of the first motor (12) is fixedly connected to a driving gear (13) meshing with the driven gear (9).

5. The folding baby stroller pressure test device according to claim 1, characterized in that: The top and both sides of the arc block (24) are fixedly connected with a pressure sensor (25), and the pressure sensor (25) is electrically connected to an external computer. Two bolt holes (26) are opened at the end of the rotating frame (19).

6. The folding baby stroller pressure test device according to claim 1, characterized in that: The bottom end of the rotating frame (19) is rotatably connected to a rotating block (27), and the top of the rotating block (27) is provided with a pressure-bearing mechanism (20) that has the same structure as the rotating frame (19) but is symmetrical to each other.

7. The folding baby stroller pressure test device according to claim 1, characterized in that: Two symmetrical first electric telescopic rods (28) are rotatably connected to the second horizontal rod (18), and the telescopic ends of the two first electric telescopic rods (28) are respectively rotatably connected to the tops of the two rotating frames (19). The rotating parts of the first electric telescopic rods (28) and the rotating frames (19) on the same vertical plane are rotatably connected to a ring slidably connected to the second horizontal rod (18). A U-shaped frame (29) is fixedly connected between the side walls of the two rings. Second motors (30) are fixedly installed on the side walls of the door frame (16). The output shafts of the two second motors (30) are fixedly connected to screws (31), and the two screws (31) are respectively threadedly connected to the centers of the two U-shaped frames (29).

8. The folding baby stroller pressure test device according to claim 1, characterized in that: A connecting plate (44) is movably connected to the middle of the opposing surfaces of the two rotating frames (19) through a slot, and vertical columns (45) are symmetrically arranged on the top of the connecting plate (44). A plurality of horizontal through slots (46) are opened on the columns (45), and a plurality of gravity blocks (47) are slidably connected to the two columns (45).

9. The folding baby stroller pressure test device according to claim 1, characterized in that: The top of the semicircular bin (32) away from the rotating frame (19) is evenly provided with a plurality of chute grooves (33), and a semicircular baffle (34) is slidably connected to the chute (33) through a slider. The side wall of the semicircular baffle (34) close to the rotating frame (19) is fixedly connected to a fixed box (37) that is symmetrical to the fixed box (37) of the semicircular bin (32). Three evenly distributed second electric telescopic rods (35) are fixedly connected to the inner wall of the semicircular bin (32), and the telescopic ends of the second electric telescopic rods (35) are fixedly connected to the side wall of the semicircular baffle (34).

10. The folding baby stroller pressure test device according to claim 1, characterized in that: The bottom of the mounting cavity (371) is slidably connected to a movable block (40), the top of the movable block (40) is fixedly connected to a contact rod (41), the length of the contact rod (41) is less than the depth of the embedded hole (39), a spring (42) is abutted between the top of the movable block (40) and the top of the mounting cavity (371), and the bottom of the movable block (40) is rotatably connected to a roller (43).

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