Elevator traction steel belt fatigue testing machine with anti-falling function

Abstract

The utility model relates to an elevator traction steel belt fatigue testing machine with an anti-falling function, which comprises a rack, a testing roller rotationally mounted on the rack and a traction device, the traction device is used for pulling a traction steel belt in a reciprocating manner, stop switches are mounted on the rack at two ends of the roller, and the stop switches are used for stopping the traction device. The projection of the trigger part of the stop switch in the axis direction of the test roller is located on the side wall of the traction steel belt, and the trigger distance of the stop switch is smaller than the extension distance of the traction steel belt extending out of the test roller when the traction steel belt slides off from the test roller. When a casting moves to the edge of the test roller and continues to slide outwards in the reciprocating pulling process of the traction steel belt, the traction steel belt triggers the stop switch to stop the traction device, the traction steel belt stops moving, damage of the bounced traction steel belt to the rack and the test roller is avoided, and the service life of the casting is prolonged. And meanwhile, additional abrasion caused by bouncing off of the traction steel belt is avoided, and the test accuracy is improved.

Description

Technical Field

[0001] The present application relates to the field of elevator testing equipment, and in particular to an elevator traction steel belt fatigue testing machine with an anti-detachment function. Background Art

[0002] Before mass production, the traction steel belt of an elevator needs to be subjected to fatigue testing. The usual testing method is to wind the traction steel belt around a roller, and then continuously pull the traction steel belt back and forth about ten million times to test the fatigue strength of the traction steel belt.

[0003] However, during the test, the traction steel belt will slip along the axial direction of the test roller during the back-and-forth pulling process, and finally fall off the roller. Since the traction steel belt is in a taut state, it will bounce off after falling off the roller, which will damage the testing equipment. Moreover, due to the long testing time, it is impossible for the tester to observe in the testing workshop for a long time. Usually, it will be discovered only after the traction steel belt falls off, which not only wastes the testing time, but also interferes with the testing accuracy. Summary of the Utility Model

[0004] In order to solve the problem that the traction steel belt has circumferential displacement on the test roller during the fatigue testing process and causes detachment, the present application provides an elevator traction steel belt fatigue testing machine with an anti-detachment function.

[0005] The elevator traction steel belt fatigue testing machine with an anti-detachment function provided by the present application adopts the following technical solutions:

[0006] An elevator traction steel belt fatigue testing machine with an anti-detachment function includes a frame, a test roller rotatably installed on the frame, and a traction device. The traction device is used to reciprocally pull the traction steel belt wound around the roller. A stop switch is installed on the frame at both ends in the axial direction of the roller. The stop switch is used to control the traction device to stop. The projection of the triggering part of the stop switch along the axial direction of the test roller is located on the side wall of the traction steel belt, and the triggering distance of the stop switch is less than the extending distance of the traction steel belt extending out of the test roller when the traction steel belt slips off the test roller.

[0007] Through the above technical solutions, when the traction steel belt moves to the edge of the test roller during the reciprocating pulling process and continues to slip outwards, the traction steel belt will trigger the stop switch, and the stop switch will stop the traction device, and the traction steel belt will stop moving, so that the taut traction steel belt will not slip off the test roller, avoiding damage to the frame and the test roller caused by the bouncing traction steel belt. At the same time, the traction steel belt will not cause additional wear due to bouncing, improving the testing accuracy.

[0008] Optionally, an alarm light is installed on the rack, and the alarm light is electrically connected to the stop switch. When the stop switch is triggered, the alarm light lights up. A surveillance camera is also installed on the rack, and the surveillance camera is facing the alarm light.

[0009] When testing multiple samples at the same time, the test situation is usually monitored by surveillance cameras. However, it is not intuitive to observe whether the towing belt has stopped pulling back and forth, and it is easy to make mistakes in observation. However, if you observe whether the alarm lights are on, it will be easier to observe and more intuitive, which is conducive to the staff to discover the situation in time.

[0010] Optionally, two mounting frames are provided on the frame, and the mounting frames include a mounting plate and two clamping plates, and the clamping plates are slidably installed on the mounting plate along the length direction of the mounting plate, and a fixing mechanism is provided on the mounting plate, and the fixing mechanism is used to fix the clamping plates, and the clamping plates clamp and fix the mounting plates on the frame, and the mounting plate is provided with an adjusting mechanism, and the stop switch is installed on the mounting plate through the adjusting mechanism, and the adjusting mechanism is used to adjust the position of the stop switch to adapt to the test roller.

[0011] Optionally, a long hole is formed through the mounting plate, and the long hole is formed along the length direction of the mounting plate. The fixing mechanism includes two first fixing screws, which are slidably installed in the long hole. The two clamps are respectively installed on the two first fixing screws, and the axis of the first fixing screw is parallel to the length direction of the clamp. A fixing block is installed on the first fixing screw on the side of the mounting plate away from the clamp, and the fixing block is threadably connected to the first fixing screw.

[0012] Optionally, the side walls on opposite sides of the first fixing screw are both set as planes, and the planes are defined as sliding surfaces, and the first fixing screw is slidably installed in the long hole via the sliding surfaces.

[0013] Optionally, a first chute is formed on one surface of the mounting plate where the fixing block is provided. Two sliders are slidably mounted in the first chute. The length direction of the first chute is parallel to the length direction of the long hole. The bottom of the first chute communicates with the long hole. A round hole is formed in the slider. The fixing block is cylindrical and is rotatably mounted in the round hole. A connection hole is formed in the slider. The first fixing screw passes through the connection hole and is threadedly connected to the fixing block. And the fixing member further includes at least one second fixing screw. One end of the second fixing screw sequentially passes through the two sliders. The second fixing screw is slidably engaged with one of the sliders and is threadedly engaged with the remaining slider. A pressing block is provided at one end of the second fixing screw that is slidably engaged with the slider. The pressing block presses against the side wall of the slider.

[0014] Optionally, the connection hole is slidably engaged with two sliding surfaces of the first fixing screw.

[0015] Optionally, barbs are provided at one end of the clamping plate facing away from the mounting plate. The barbs of the two clamping plates are both located on the opposite side of the two clamping plates. And one end of the barb does not exceed the end surface of the clamping plate facing away from the mounting plate. When the fixing block is tightened, the barb presses against the frame.

[0016] Optionally, a pull rod is vertically slidably inserted through the mounting plate. A hook plate is provided at the upper end of the pull rod. The hook plate is hung on the frame. The lower end of the pull rod passes through the mounting plate. And a fixing nut is threadedly mounted at the lower end of the pull rod. The fixing nut presses against the bottom wall of the mounting plate.

[0017] Optionally, the adjusting mechanism includes an adjusting plate slidably mounted on the mounting plate. The cross section of the adjusting plate is a right trapezoid. The stop switch is mounted on the adjusting plate. The sliding direction of the adjusting plate is parallel to the axis of the test roller. A fixing bolt is threadedly mounted on the mounting plate. One end of the fixing bolt passes through the mounting plate and presses against the right-angled side wall of the adjusting plate.

[0018] In summary, the present application limits the axial slip of the traction steel belt by installing a trigger-type stop switch on the frame on both sides of the test roller. When the traction steel belt slips to the end face of the test roller and continues to slide out, the traction steel belt will trigger the stop switch to stop the traction mechanism, and the traction steel belt stops moving, so that the traction steel belt will not slip off the test roller and cause damage to itself and the equipment. And when installing the stop switch, according to the different specifications of the elevator traction steel belt and the different frames of the test equipment, by moving the slider and adjusting the protruding length of the clamping plate, the adaptation installation of frames with various different shapes and thicknesses can be realized. And through the cooperation of the pull rod, the hook plate and the fixing nut, the installation height of the mounting plate is not easy to slide down. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic perspective view of the present application.

[0020] Figure 2 is Figure 1 an enlarged schematic view of part A in

[0021] Those skilled in the art will understand that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the dimensions and positions of some elements in the drawings may be enlarged relative to other elements to help improve the understanding of the embodiments of the present invention.

[0022] Reference numerals: 1, frame; 11, test roller; 12, alarm lamp; 13, monitoring camera; 2, traction device; 3, mounting bracket; 31, mounting plate; 311, long hole; 312, first chute; 32, clamping plate; 4, fixing mechanism; 41, first fixing screw; 411, sliding surface; 42, fixing block; 43, second fixing threaded rod; 44, pressing block; 5, adjusting mechanism; 51, adjusting plate; 52, fixing bolt; 6, slider; 61, round hole; 62, connecting hole; 7, barb; 8, stop switch; 9, pull rod; 91, hook plate; 92, fixing nut; 10, traction steel belt. EMBODIMENTS

[0023] The following will further describe the present application in detail with reference to the Figure 1-2 drawings.

[0024] An embodiment of the present application discloses a fatigue tester for an elevator traction steel belt 10 with an anti-detachment function. Referring to Figure 1 and Figure 2 , it includes a frame 1, on which a test roller 11 is rotatably installed, and a set of traction devices 2 are also fixedly installed on the frame 1. When it is necessary to test a sample of the traction steel belt 10, first wind the traction steel belt 10 around the test roller 11, and then wind the remaining part of the traction steel belt 10 around the rollers of the traction device 2 in sequence, and start the traction device 2 to drive the traction steel belt 10 to reciprocate to perform a fatigue strength test on the traction steel belt 10.

[0025] Referring to Figure 1 and Figure 2 , mounting brackets 3 are provided on the frame 1 at both ends in the axial direction of the test roller 11. The mounting bracket 3 includes a rectangular mounting plate 31 and two clamping plates 32. A stop switch 8 is provided on the mounting bracket 3, and the stop switch 8 is used to stop the action of the traction mechanism. When one side of the traction steel belt 10 extends out of the range of the test roller 11 during the reciprocating pulling process, the traction steel belt 10 will touch the stop switch 8 to stop the traction mechanism, preventing the traction steel belt 10 from slipping off and flying from the test roller 11.

[0026] Refer to Figure 1 and Figure 2 As shown in FIGS. and, the mounting plate 31 is horizontal, and a fixing mechanism 4 is provided on the mounting plate 31. The fixing mechanism 4 includes two first fixing screws 41. A long hole 311 is formed through the mounting plate 31. The length direction of the long hole 311 is parallel to the length direction of the mounting plate 31, and the long hole 311 is located in the middle of the mounting plate 31.

[0027] Refer to Figure 1 and Figure 2 As shown in FIGS. and, both of the two first fixing screws 41 are slidably mounted in the long hole 311. A flat surface is integrally provided on each of the opposite sides of the first fixing screw 41. Both of these flat surfaces are defined as sliding surfaces 411. The two sliding surfaces 411 of the same first fixing screw 41 are parallel to each other, and the two sliding surfaces 411 are respectively in contact with the two side walls of the long hole 311. The first fixing screw 41 is limited by the two sliding surfaces 411, so that the first fixing screw 41 will not rotate during the sliding process.

[0028] Refer to Figure 1 and Figure 2 As shown in FIGS. and, two clamping plates 32 are respectively welded to one end of the two first fixing screws 41. The clamping plate 32 is in a cuboid shape, and the length direction of the clamping plate 32 is parallel to the axis of the first fixing screw 41. A first sliding groove 312 is formed on the surface of the mounting plate 31 facing away from the clamping plate 32. The length direction of the first sliding groove 312 is parallel to the long hole 311, and the first sliding groove 312 is also located in the middle of the mounting plate 31. Two sliders 6 are slidably mounted in the first sliding groove 312. A second fixing screw is slidably inserted through one end of the mounting plate 31. One end of the second fixing screw sequentially passes through the two sliders 6, and the second fixing screw is slidably engaged with the first slider 6 and threadedly connected to the second slider 6. A pressing block 44 is integrally provided on the end of the second fixing screw away from the end to which it is threadedly connected.

[0029] Refer to Figure 1 and Figure 2 As shown in FIGS. and, a circular hole 61 is formed on the surface of each of the two sliders 6 facing away from the mounting plate 31. A cylindrical fixing block 42 is rotatably mounted coaxially in the circular hole 61. A connecting hole 62 is coaxially formed through the bottom of the circular hole 61. One end of the first fixing screw 41 sequentially slides through the long hole 311 and the connecting hole 62, and the fixing block 42 is coaxially threadedly mounted on the end of the first fixing screw 41 passing through the long hole 311 and the connecting hole 62.

[0030] Refer to Figure 1 and Figure 2, a barb 7 is integrally provided on the opposite side of the two clamping plates 32, and one end of the barb 7 is flush with the end of the clamping plate 32 away from the mounting plate 31. When installing the mounting plate 31, first slide the slider 6 so that the two clamping plates 32 are in contact with the side wall of the mounting position of the frame 1, then the second fixing screw is sequentially passed through the mounting plate 31 and the first slider 6 to be threadedly connected to the second slider 6, and then the pressing block 44 is rotated until the pressing block 44 is in contact with the side wall of the mounting plate 31, and the opposite side of the two clamping plates 32 is in contact with the mounting wall of the frame 1.

[0031] Reference Figure 1 and Figure 2 At this time, the two fixing blocks 42 are rotated again, and the fixing blocks 42 drive the barbs 7 on the two clamping plates 32 to fit tightly against the mounting wall of the frame 1, completing the fixed installation of the mounting plate 31. At the same time, a pull rod 9 is slidably installed on the top wall of the mounting plate 31, and a hook plate 91 is welded on the top wall of the pull rod 9. The hook plate 91 is perpendicular to the pull rod 9 and is hung on the frame 1. The lower end of the pull rod 9 passes through the mounting plate 31 and is threadedly installed with a fixing nut 92. The fixing nut 92 fits tightly against the bottom wall of the mounting plate 31, completing the z-axis support and fixation of the mounting plate 31.

[0032] Reference Figure 1 and Figure 2 An adjusting mechanism 5 is also provided on the top wall of the mounting plate 31. The adjusting mechanism 5 includes an adjusting plate 51 horizontally slidably mounted on the top wall of the mounting plate 31. The adjusting plate 51 slides along the axial direction of the test roller 11. The cross-sectional area of ​​the adjusting plate 51 is a right-angle trapezoid.

[0033] Reference Figure 1 and Figure 2 The stop switch 8 is fixedly mounted on the top wall of the adjusting plate 51, with the triggering side of the stop switch 8 facing the test roller 11. When installing the mounting plate 31, the horizontal position of the stop switch 8 can be adjusted by sliding the mounting plate 31, so that the stop switch 8 corresponds to the traction steel belt 10 on the test roller 11. After fixing the mounting plate 31, the distance between the stop switch 8 and the test roller 11 can be adjusted by sliding the adjusting plate 51.

[0034] Reference Figure 1 and Figure 2 The adjustment mechanism 5 also includes a fixing bolt 52, which is threadedly mounted on the mounting plate 31. One end of the fixing bolt 52 passes through the mounting plate 31 and presses against the right-angle side wall of the adjustment plate 51. After the adjustment of the stop switch 8 is completed, the fixing bolt 52 is tightened, and the fixing bolt 52 presses against the right-angle side wall of the adjustment plate 51 to fix the adjustment plate 51.

[0035] Reference Figure 1 and Figure 2, an alarm lamp 12 and a monitoring camera 13 are also installed on the rack 1. The alarm lamp 12 is connected to the stop switch 8, and the monitoring camera 13 is directed towards the alarm lamp 12. When the stop switch 8 is activated, the alarm lamp 12 lights up, and the test situation can be monitored more intuitively through the alarm lamp 12.

[0036] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. An elevator traction steel belt fatigue testing machine with an anti-falling function, comprising a frame (1), a test roller (11) rotatably mounted on the frame (1), and a traction device (2), wherein the traction device (2) is used to reciprocate the traction steel belt (10) wound around the roller, and is characterized in that: A stop switch (8) is installed on each of the two ends of the frame (1) in the direction of the roller axis. The stop switch (8) is used to control the traction device (2) to stop. The projection of the triggering position of the stop switch (8) along the axis direction of the test roller (11) is located on the side wall of the traction steel belt (10). The triggering distance of the stop switch (8) is less than the extension distance of the traction steel belt (10) from the test roller (11) when the traction steel belt (10) slips off the test roller (11).

2. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 1 is characterized in that: An alarm light (12) is installed on the frame (1), and the alarm light (12) is electrically connected to the stop switch (8). When the stop switch (8) is triggered, the alarm light (12) lights up. A monitoring camera (13) is also installed on the frame (1), and the monitoring camera (13) faces the alarm light (12).

3. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 1 is characterized in that: The frame (1) is provided with two mounting frames (3), the mounting frames (3) comprising a mounting plate (31) and two clamping plates (32), the clamping plates (32) being slidably mounted on the mounting plate (31) along the length direction of the mounting plate (31), the mounting plate (31) being provided with a fixing mechanism (4), the fixing mechanism (4) being used to fix the clamping plates (32), the clamping plates (32) clamping and fixing the mounting plate (31) on the frame (1), the mounting plate (31) being provided with an adjusting mechanism (5), the stop switch (8) being mounted on the mounting plate (31) via the adjusting mechanism (5), the adjusting mechanism (5) being used to adjust the position of the stop switch (8) to adapt to the test roller (11).

4. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 3 is characterized in that: The mounting plate (31) is provided with a long hole (311) extending through it. The long hole (311) is provided along the length direction of the mounting plate (31). The fixing mechanism (4) comprises two first fixing threaded rods. The first fixing threaded rods are slidably mounted in the long holes (311). The two clamping plates (32) are respectively mounted on the two first fixing threaded rods. The axes of the first fixing threaded rods are parallel to the length direction of the clamping plates (32). A fixing block (42) is mounted on the first fixing threaded rod located on a side of the mounting plate (31) away from the clamping plates (32). The fixing block (42) is threadably connected to the first fixing threaded rod.

5. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 4 is characterized in that: The side walls on opposite sides of the first fixed threaded rod are both arranged as planes, and the planes are defined as sliding surfaces (411). The first fixed threaded rod is slidingly installed in the long hole (311) via the sliding surfaces (411).

6. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 5 is characterized in that: A first slide groove (312) is provided on one side of the mounting plate (31) provided with a fixed block (42), two sliders (6) are slidably installed in the first slide groove (312), the length direction of the first slide groove (312) is parallel to the length direction of the long hole (311), the bottom of the first slide groove (312) is connected to the long hole (311), a circular hole (61) is provided on the slider (6), the fixed block (42) is cylindrical, the fixed block (42) is rotatably installed in the circular hole (61), the slider (6) is provided with a connecting hole (62), the The first fixed threaded rod passes through the connecting hole (62) and is threadedly connected to the fixed block (42), and the fixing member further comprises at least one second fixed threaded rod (43), one end of the second fixed threaded rod (43) passes through two sliders (6) in sequence, the second fixed threaded rod (43) is slidably engaged with one of the sliders (6), and the second fixed threaded rod (43) is threadedly engaged with the remaining slider (6), and a clamping block (44) is provided on one end of the second fixed threaded rod (43) slidably engaged with the slider (6), and the clamping block (44) is pressed against the side wall of the slider (6).

7. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 6 is characterized in that: The connection hole (62) is in sliding engagement with the two sliding surfaces (411) of the first fixed threaded rod.

8. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 7 is characterized in that: A barb (7) is provided on one end of the clamping plate (32) facing away from the mounting plate (31); the barbs (7) of the two clamping plates (32) are located on opposite sides of the two clamping plates (32); and one end of the barb (7) does not exceed an end surface of the clamping plate (32) facing away from the mounting plate (31); when the fixing block (42) is tightened, the barb (7) is pressed against the frame (1).

9. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 8, characterized in that: A pull rod (9) is vertically slidably provided on the mounting plate (31), a hook plate (91) is provided at the upper end of the pull rod (9), the hook plate (91) is hung on the frame (1), the lower end of the pull rod (9) passes through the mounting plate (31), and a fixing nut (92) is threadedly installed at the lower end of the pull rod (9), and the fixing nut (92) is pressed against the bottom wall of the mounting plate (31).

10. The elevator traction steel belt fatigue testing machine with anti-falling function according to claim 3, characterized in that: The adjustment mechanism (5) comprises an adjustment plate (51) slidably mounted on the mounting plate (31), the cross section of the adjustment plate (51) being a right-angled trapezoid, the stop switch (8) being mounted on the adjustment plate (51), the sliding direction of the adjustment plate (51) being parallel to the axis of the test roller (11), and a fixing bolt (52) being threadedly mounted on the mounting plate (31), one end of the fixing bolt (52) passing through the mounting plate (31) and pressing against the right-angled side wall of the adjustment plate (51).

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