A hinge fatigue life testing device

Abstract

This invention relates to a hinge fatigue life testing device. It features two test doors driven by a power unit and a transmission unit, allowing simultaneous fatigue life testing of hinges on both sides. Compared to traditional single-door testing devices, this doubles testing efficiency and reduces testing and time costs. A clamping device is connected to the power unit via a second clutch assembly. When hinge replacement is required, the power unit provides power, and the clamping device then clamps and secures the test doors, eliminating the need for manual lifting and significantly simplifying the hinge replacement process, thus improving the device's usability. Using only one power source to simultaneously drive both the door-flipping and clamping mechanisms reduces the number of power sources, lowering manufacturing costs and saving space. This results in a more compact overall layout, facilitating transportation, installation, and maintenance.

Description

Technical Field

[0001] This invention relates to the field of hinge manufacturing equipment technology, and in particular to a hinge fatigue life testing device. Background Technology

[0002] With continuous economic development and rising living standards, people have increasingly higher requirements for door quality. Doors mainly consist of the door leaf, door frame, and hinges. Hinges primarily connect the door frame and door leaf. Since the door leaf is frequently opened and closed, the lifespan of the hinges directly affects the lifespan of the door leaf. To test the lifespan of hinges, devices have emerged that use cylinder extension and retraction to drive the door leaf opening and closing, thus testing the hinge lifespan. However, these devices typically have the following problems: 1. Most devices can only test a single hinge, making it difficult to test multiple hinges simultaneously, resulting in long testing cycles and high costs; 2. When replacing the hinge to be tested, traditional devices lack a mechanism to secure the test door, requiring workers to lift the test door to disassemble and install the hinge, a cumbersome and extremely troublesome operation. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the problems existing in the prior art. To this end, the present invention proposes a device that can efficiently and conveniently perform fatigue life testing of hinges.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A hinge fatigue life testing device includes a test frame and two test doors, which are installed on the left and right sides of the test frame via the hinges to be tested. The device also includes a power unit, a transmission unit, a clamping device, a first clutch assembly, and a second clutch assembly. The power unit is detachably connected to the transmission unit via the first clutch assembly and can drive the two test doors to flip. The power unit is detachably connected to the clamping device via the second clutch assembly and can clamp and fix the two test doors.

[0006] In some embodiments, the power unit includes a cylinder mounted on the test frame, the piston rod of the cylinder being extended and retracted, and a connecting column being provided at the end of the piston rod.

[0007] In some embodiments, the transmission device is provided in two sets at left and right intervals, each including a swing seat on the test frame. A V-shaped swing plate is sway-hinged on the swing seat. A first guide post is provided at one end of the V-shaped swing plate and a second guide post is provided at the other end. A first transverse guide groove is provided on one side of the test door. The first guide post is movably disposed in the first transverse guide groove. A second transverse guide groove is slidably disposed on the test frame. The second guide post is movably disposed in the second transverse guide groove.

[0008] In some embodiments, the first clutch assembly includes a sliding seat that slides back and forth on the test frame. The sliding seat is fixedly connected to a second transverse guide groove. A through hole is provided on the sliding seat. A U-shaped limiting plate is movably inserted into the upper end of the sliding seat. The connecting column can movably pass through the through hole. A concave annular groove is provided on the outer circumference of the connecting column. The U-shaped limiting plate can be inserted into the concave annular groove, thereby connecting the U-shaped limiting plate, the connecting column, and the sliding seat.

[0009] In some embodiments, the clamping device is provided in two sets at left and right intervals, each including a hinge seat spaced vertically on the test frame. Arc-shaped clamping arms are hinged to the hinge seats at front and back intervals. A clamping part is provided at the outer end of the arc-shaped clamping arms. A gear is provided on the hinge shaft of the arc-shaped clamping arms. A double-sided rack slides left and right on the hinge seat and between the two gears. The double-sided rack can mesh with the gears on the front and back sides respectively. The inner ends of the upper and lower double-sided racks are connected by a vertical plate. A connecting plate is hinged to the vertical plate. A connecting seat is hinged between the left and right connecting plates.

[0010] In some embodiments, the second clutch assembly includes a bolt threaded to the connecting seat, and a threaded hole is provided at the end of the connecting column. The bolt can be threadedly connected to the threaded hole, thereby fixing the connecting seat to the connecting column.

[0011] In some embodiments, a rubber pad is provided on the clamping portion.

[0012] In some embodiments, a limiting groove is provided on the test gate, and the clamping part is clamped in the limiting groove.

[0013] In some embodiments, a counting sensor is provided on the test fixture for calculating the number of times the test door opens and closes.

[0014] In some embodiments, a perforation is provided on the test door, and a counterweight hook is provided on the perforation.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. By setting up two test doors and driving them through a power and transmission device, fatigue life tests can be performed on the left and right hinges simultaneously. Compared with the traditional single-door test device, the testing efficiency is doubled, and the testing cost and time cost are reduced.

[0017] 2. The clamping device is connected to the power unit through the second clutch assembly. When the hinge needs to be replaced, the power unit provides power, and then the clamping device clamps and fixes the test door, thus eliminating the need for manual lifting of the test door. This greatly simplifies the replacement process of the hinge of the test piece and improves the ease of use of the test device.

[0018] 3. The detachable connection design of the first clutch assembly and the second clutch assembly allows for the simultaneous operation of the test door flipping and clamping devices using only one power source, avoiding the structural bulkiness caused by multiple power sources in traditional designs. Reducing the number of power sources not only lowers the manufacturing cost of the device but also saves space, making the overall layout of the test device more compact and facilitating the transportation, installation, and maintenance of the equipment. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the power unit of the present invention when it is connected to the transmission device via the first clutch assembly.

[0020] Figure 2 For the present invention Figure 1 Enlarged diagram of point A.

[0021] Figure 3 This is one of the top view schematic diagrams of the power unit of the present invention when it is connected to the transmission device via the first clutch assembly.

[0022] Figure 4 This is the second top view of the power unit of the present invention when it is connected to the transmission device via the first clutch assembly.

[0023] Figure 5 This is a schematic diagram of the structure of the first clutch assembly of the present invention.

[0024] Figure 6 This is a three-dimensional structural diagram of the power unit of the present invention when connected by the second clutch assembly and the clamping device.

[0025] Figure 7 For the present invention Figure 6 Enlarged diagram of point B.

[0026] Figure 8 This is a schematic diagram of the structure of the second clutch assembly of the present invention. Detailed Implementation

[0027] The following detailed description provides various embodiments or examples for carrying out the present invention. Of course, these are merely embodiments or examples and are not intended to be limiting. Additionally, repeated reference numerals, such as repeated numbers and / or letters, may be used in different embodiments. These repetitions are for the purpose of simple and clear description of the invention and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0028] like Figures 1-8 The device for testing the fatigue life of a hinge includes a test frame 1 and two test doors 2, which are installed on the left and right sides of the test frame 1 via the hinges 10 to be tested. It also includes a power unit, a transmission unit, a clamping device, a first clutch assembly, and a second clutch assembly. The power unit is detachably connected to the transmission unit via the first clutch assembly and can drive the two test doors 2 to flip. The power unit is detachably connected to the clamping device via the second clutch assembly and can clamp and fix the two test doors 2.

[0029] In the actual setup of the testing device, the test frame 1, serving as the basic support structure, can be constructed by welding or assembling high-strength metal materials. Two test doors 2 are respectively installed on the left and right sides of the test frame 1 using the hinges 10 to be tested, ensuring the hinges 10 are securely installed. The power unit, transmission unit, clamping device, and first and second clutch assemblies are installed at corresponding positions on the test frame 1. When testing is required, the power unit and transmission unit are connected via the first clutch assembly, and the power unit drives the transmission unit to flip the test door 2. When the hinge 10 needs to be replaced, the power unit and clamping device are connected via the second clutch assembly, and the clamping device clamps and secures the test door 2 before disassembly and replacement.

[0030] Based on the above structure, two test doors 2 are set up and driven by a power device and a transmission device, which can simultaneously perform fatigue life tests on the hinges 10 on the left and right sides. Compared with the traditional single-door test device, the test efficiency is doubled and the test cost and time cost are reduced.

[0031] In addition, the clamping device is connected to the power unit through the second clutch assembly. When the hinge needs to be replaced, the power unit provides power, and then the clamping device clamps and fixes the test door 2, so that the test door does not need to be lifted manually, which greatly simplifies the replacement process of the hinge of the test piece and improves the ease of use of the test device.

[0032] It is worth mentioning that the detachable connection design of the first clutch assembly and the second clutch assembly allows only one power source to drive the two devices of flipping and clamping the test door 2 at the same time, avoiding the structural bulkiness caused by multiple power sources in the traditional design. Reducing the number of power sources not only reduces the manufacturing cost of the device, but also saves space, making the overall layout of the test device more compact and facilitating the transportation, installation and maintenance of the equipment.

[0033] In this invention, the power device includes a cylinder 21 mounted on the test frame 1. The piston rod of the cylinder 21 is extended and retracted, and a connecting column 22 is provided at the end of the piston rod. By using a cylinder as a power source, the extension and retraction of its piston rod is stable and controllable, and it can provide continuous and stable power for the flipping and clamping operation of the test door 2.

[0034] See Figures 1-4 As shown, the transmission device is provided with two sets of left and right intervals, each including a swing seat 31 on the test frame 1. A V-shaped swing plate 32 is hinged to the swing seat 31. A first guide post 33 is provided at one end of the V-shaped swing plate 32, and a second guide post 34 is provided at the other end. A first transverse guide groove 35 is provided on one side of the test door 2. The first guide post 33 is movably disposed in the first transverse guide groove 35. A second transverse guide groove 36 is slidably disposed on the test frame 1. The second guide post 34 is movably disposed in the second transverse guide groove 36.

[0035] According to the above structure, two sets of swing seats 31 are installed at intervals on the left and right sides of the test frame 1 and fixed by bolts or welding. A V-shaped swing plate 32 is connected to each swing seat 31 by a hinge shaft to ensure that the V-shaped swing plate 32 can swing flexibly. A first guide post 33 is welded or threaded to one end of the V-shaped swing plate 32, and a second guide post 34 is installed at the other end. A first transverse guide groove 35 is opened on one side of the test door 2, and the first guide post 33 is inserted into the first transverse guide groove 35 to form a sliding fit. A second transverse guide groove 36 that can slide back and forth is set on the test frame 1, and the second guide post 34 is movably set in the second transverse guide groove 36. When the piston rod of the cylinder 21 extends or retracts, it drives the connecting column 22 to move, which in turn pushes the V-shaped swing plate 32 to swing through the second transverse guide groove 36 and the second guide post 34. Then, the first guide post 33 and the first transverse guide groove 35 cooperate to convert the swing of the V-shaped swing plate 32 into the flipping action of the test door 2.

[0036] See Figures 3-5As shown, the first clutch assembly includes a sliding seat 41 that slides back and forth on the test frame 1. The sliding seat 41 is fixedly connected to the second transverse guide groove 36. A through hole 42 is provided on the sliding seat 41. A U-shaped limiting plate 43 is movably inserted into the upper end of the sliding seat 41. The connecting column 22 can be movably inserted through the through hole 42. A concave annular groove 44 is provided on the outer circumference of the connecting column 22. The U-shaped limiting plate 43 can be inserted into the concave annular groove 44, thereby connecting the U-shaped limiting plate 43, the connecting column 22, and the sliding seat 41.

[0037] Specifically, a slide rail or slide groove is provided on the test frame 1 so that the sliding seat 41 can slide back and forth; the sliding seat 41 and the second transverse guide groove 36 are fixedly connected by bolts to ensure that the two move synchronously; a through hole 42 is machined on the sliding seat 41 so that the connecting column 22 can pass through the through hole 42; a slot is provided at the upper end of the sliding seat 41, and the U-shaped limiting plate 43 can be movably inserted into the slot; a concave annular groove 44 is machined on the outer circumference of the connecting column 22. After the connecting column 22 passes through the through hole 42, the U-shaped limiting plate 43 is inserted into the slot and locked into the concave annular groove 44, so that the U-shaped limiting plate 43, the connecting column 22 and the sliding seat 41 are connected, thereby connecting the power device and the transmission device, and the cylinder 21 can drive the transmission device to work.

[0038] See Figures 6-8 As shown, the clamping device is provided in two sets at left and right intervals, each including a hinge seat 51 spaced vertically on the test frame 1. Arc-shaped clamping arms 52 are hinged to the hinge seat 51 at front and back intervals. A clamping part 53 is provided at the outer end of the arc-shaped clamping arm 52. A gear 54 is provided on the hinge shaft of the arc-shaped clamping arm 52. A double-sided rack 55 slides left and right on the hinge seat 51 and between the two gears 54. The double-sided rack 55 can mesh with the gears 54 on the front and back sides respectively. The inner ends of the upper and lower double-sided racks 55 are connected by a vertical plate 56. A connecting plate 57 is hinged to the vertical plate 56. A connecting seat 58 is hinged between the left and right connecting plates 57.

[0039] Specifically, hinge seats 51 are installed at intervals on the left and right sides of the test frame 1 and fixed with bolts; arc-shaped clamping arms 52 are hinged to each hinge seat 51 at intervals via hinge shafts, and gears 54 are installed on the hinge shafts of the arc-shaped clamping arms 52 to ensure that the gears 54 rotate synchronously with the arc-shaped clamping arms 52; guide rails are set on the hinge seats 51 to allow the double-sided racks 55 to slide left and right, and the double-sided racks 55 mesh with the gears 54 on the front and rear sides respectively; the inner ends of the upper and lower double-sided racks 55 are connected by vertical... The vertical plate 56 is welded or bolted to the vertical plate 56, and the connecting plate 57 is hinged to the vertical plate 56 via a hinge shaft. The connecting plate 58 is connected between the left and right connecting plates 57 via a hinge shaft. When the power unit is connected to the connecting plate 58 via the second clutch assembly, the cylinder 21 drives the connecting plate 58 to move, causing the connecting plate 57, the vertical plate 56 and the double-sided rack 55 to slide. The double-sided rack 55 pushes the gear 54 to rotate, thereby causing the arc-shaped clamping arm 52 to rotate around the hinge shaft, and clamping the test door 2 via the clamping part 53.

[0040] The second clutch assembly includes a bolt 61 threaded to the connecting seat 58, and a threaded hole 62 provided at the end of the connecting column 22. The bolt 61 can be threaded to the threaded hole 62, thereby fixing the connecting seat 58 to the connecting column 22.

[0041] Specifically, a threaded hole is machined on the connecting seat 58, and the bolt 61 is threadedly connected to the connecting seat 58; a threaded hole 62 adapted to the bolt 61 is machined at the end of the connecting column 22; when it is necessary to clamp the test door 2, firstly, it is separated from the first clutch assembly, and the U-shaped limit plate 43 is pulled out from the slot of the sliding seat 41. The connecting column 22 of the cylinder 21 continues to extend, and the connecting column 22 is brought close to the connecting seat 58. The bolt 61 is tightened to make it threadedly connected to the threaded hole 62, so that the connecting seat 58 and the connecting column 22 are fixed, and the power unit is connected to the clamping device; when the clamping function is not needed, the bolt 61 is unscrewed to separate the power unit from the clamping device.

[0042] Furthermore, a rubber pad is provided on the clamping part 53. The rubber pad is installed on the surface of the clamping part 53 by means of adhesive or screw fixation, ensuring that the rubber pad is firmly attached to the clamping part 53. When clamping the test door 2, the rubber pad is in close contact with the surface of the test door 2, increasing the friction and protecting the surface of the test door 2 from scratches.

[0043] Furthermore, a limiting groove 81 is provided on the test door 2, and the clamping part 53 is clamped in the limiting groove 81; the limiting groove 81 is machined at a suitable position on the edge of the test door 2 to ensure that the size of the limiting groove 81 is adapted to the clamping part 53; when the clamping device is working, the clamping part 53 is accurately inserted into the limiting groove 81, so that the clamping force is evenly distributed on the test door 2, preventing the test door 2 from shifting or tilting.

[0044] In this invention, a counting sensor 91 for calculating the number of times the test door 2 opens and closes is provided on the test frame 1. The counting sensor 91 can be a photoelectric sensor or a proximity sensor, etc. The counting sensor 91 is connected to the data acquisition system. When the test door 2 opens and closes each time it passes the counting sensor 91, the sensor triggers a signal, and the data acquisition system records the number of times the door opens and closes, thereby realizing the automatic and accurate counting of the number of times the test door 2 opens and closes.

[0045] In this invention, a cutout 92 is provided on the test door 2, and a counterweight hook 93 is provided on the cutout 92; thus, a counterweight of appropriate weight can be selected and hung on the counterweight hook 93 according to different test requirements, simulating the working conditions of the hinge bearing different loads in actual use, making the test closer to the actual application scenario.

[0046] Based on the accompanying drawings and the foregoing illustrations and descriptions, the basic principles and main features of the present invention, as well as its advantages, those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hinge fatigue life testing device, comprising a test frame (1) and test doors (2), wherein two test doors (2) are provided and are installed on the left and right sides of the test frame (1) via the hinge (10) to be tested, characterized in that: It also includes a power unit, a transmission unit, a clamping device, a first clutch assembly, and a second clutch assembly. The power unit is detachably connected to the transmission unit via the first clutch assembly and can drive the two test doors (2) to flip through the transmission unit. The power unit is detachably connected to the clamping device via the second clutch assembly and can clamp and fix the two test doors (2) through the clamping device. The power unit includes a cylinder (21) mounted on the test frame (1). The piston rod of the cylinder (21) is extended and retracted, and a connecting column (22) is provided at the end of the piston rod. Two sets of clamping devices are arranged at intervals on the left and right, each including a clamping device spaced vertically at intervals on the test frame. (1) A hinge seat (51) is provided on the hinge seat (51) with an arc-shaped clamping arm (52) hinged at intervals. A clamping part (53) is provided at the outer end of the arc-shaped clamping arm (52). A gear (54) is provided on the hinge shaft of the arc-shaped clamping arm (52). A double-sided rack (55) slides left and right on the hinge seat (51) and between the two gears (54). The double-sided rack (55) can mesh with the gears (54) on the front and rear sides respectively. The inner ends of the upper and lower double-sided racks (55) are connected by a vertical plate (56). A connecting plate (57) is hinged on the vertical plate (56). A connecting seat (58) is hinged between the left and right connecting plates (57).

2. The hinge fatigue life testing device according to claim 1, characterized in that: The transmission device is provided with two sets of left and right intervals, each of which includes a swing seat (31) provided on the test frame (1). A V-shaped swing plate (32) is swing-hinged on the swing seat (31). A first guide post (33) is provided at one end of the V-shaped swing plate (32), and a second guide post (34) is provided at the other end. A first transverse guide groove (35) is provided on one side of the test door (2). The first guide post (33) is movably provided in the first transverse guide groove (35). A second transverse guide groove (36) is slidably provided on the test frame (1). The second guide post (34) is movably provided in the second transverse guide groove (36).

3. The hinge fatigue life testing device according to claim 2, characterized in that: The first clutch assembly includes a sliding seat (41) that slides back and forth on the test frame (1). The sliding seat (41) is fixedly connected to the second transverse guide groove (36). A through hole (42) is provided on the sliding seat (41). A U-shaped limiting plate (43) is movably inserted into the upper end of the sliding seat (41). The connecting column (22) can be movably inserted through the through hole (42). A concave annular groove (44) is provided on the outer circumference of the connecting column (22). The U-shaped limiting plate (43) can be inserted into the concave annular groove (44), thereby connecting the U-shaped limiting plate (43), the connecting column (22), and the sliding seat (41).

4. The hinge fatigue life testing device according to claim 1, characterized in that: The second clutch assembly includes a bolt (61) threaded to the connecting seat (58), and a threaded hole (62) is provided at the end of the connecting column (22). The bolt (61) can be threaded to the threaded hole (62), thereby fixing the connecting seat (58) and the connecting column (22).

5. The hinge fatigue life testing device according to claim 1, characterized in that: A rubber pad is provided on the clamping part (53).

6. The hinge fatigue life testing device according to claim 5, characterized in that: A limiting groove (81) is provided on the test door (2), and the clamping part (53) is clamped in the limiting groove (81).

7. The hinge fatigue life testing device according to claim 1, characterized in that: A counting sensor (91) for calculating the number of times the test door (2) opens and closes is provided on the test frame (1).

8. The hinge fatigue life testing device according to claim 1, characterized in that: A perforated opening (92) is provided on the test door (2), and a counterweight hook (93) is provided on the perforated opening (92).

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