Multifunctional test platform for lifting mechanism of window cleaning machine

Abstract

The utility model discloses a multifunctional test platform for a lifting mechanism of a window cleaning machine, which comprises a support, two groups of guide pulley blocks, a gap bridge pulley block, a weight assembly, a driving mechanism, a lifting mechanism, a meter counter and an electromagnetic switch, the driving mechanism and the lifting mechanism are respectively arranged on two sides of the bottom of the support, and the two groups of guide pulley blocks are respectively arranged on two sides of the middle upper part of the support. A meter counter is arranged on the side, close to the driving mechanism, of the lower middle portion of the support, a steel wire rope is wound on the driving mechanism, one end of the steel wire rope penetrates through the meter counter and sequentially winds around the two guide pulley sets to be wound on the lifting mechanism, a gap bridge pulley set is hung on the steel wire rope between the two guide pulley sets, and a weight assembly is hung below the gap bridge pulley set. And the gap bridge pulley block reciprocates and lifts along a guide rail arranged on the bracket. The platform has the function of detecting the rope performance of the hoisting mechanism disc and the rope arrangement performance of the hoisting mechanism, and the space cost, the time cost and the economic cost required by the test are greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting machinery detection, in particular to a multifunctional test platform for a lifting mechanism of a window cleaning machine. Background Art

[0002] At present, window cleaning machines have been widely used in domestic super-high-rise buildings over 150 meters. Since window cleaning machines are high-altitude manned equipment, their safety must be guaranteed, and the lifting mechanism is the core component of the window cleaning machine. In the current production inspection, due to the lack of a suitable test platform, the lifting mechanism cannot load the wire rope according to the actual working conditions when winding and arranging the rope, so the wire rope cannot be pre-tightened and wound, and the test effect is poor. At present, window cleaning machines generally work on the roofs of super-high-rise buildings over 150 meters, with a large length of winding and arranging ropes. If there is no suitable test platform to test them, especially repeated tests, it will cost a high time cost, space cost and economic cost.

[0003] The invention patent with application number CN201310684122.2 discloses a test platform for a winch mechanism, which includes a tower frame, a sky beam, a tower crane upper body, a guide wheel, a ground fixed pulley block and a sling vertically set up on the ground. The sky beam is arranged on the tower frame, and a first pulley block and a second pulley block are respectively arranged on opposite ends of the sky beam. The tower crane upper body is arranged on the sky beam for hoisting. The guide wheel is arranged on the ground and located on one side of the tower frame. The ground fixed pulley block is arranged on the ground and located between the guide wheel and the tower frame. The sling is located on the other side of the tower frame. Among them, the wire rope coming out of the winch mechanism passes through the guide wheel from above the guide wheel, passes through the ground fixed pulley block from below the ground and extends upward, and passes through the first pulley block and the second pulley block in sequence, and then extends to the sling. The test platform of the invention can carry a large load, and does not require other auxiliary lifting equipment to complete the hoisting, and the rope output angle of the winch mechanism is convenient and quick to adjust. However, the test platform has requirements for experimental equipment and test sites. Not only does it need to have a tower, but it is also a large-scale equipment, which occupies a large site and is not applicable. Most importantly, it can only test the rope-laying performance but not the rope-winding performance. Utility Model Content

[0004] The utility model aims to provide a multifunctional test platform for a lifting mechanism of a window cleaning machine, which solves the problem of simultaneously testing the rope arrangement performance and the rope winding performance of the lifting mechanism of the window cleaning machine.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A multifunctional test platform for a lifting mechanism of a window cleaning machine comprises a bracket, a guide pulley block, a bridge pulley block, a weight assembly, a driving mechanism, a lifting mechanism, a meter and an electromagnetic switch. The driving mechanism and the lifting mechanism are respectively arranged on both sides of the bottom of the bracket, two groups of guide pulley blocks are arranged on both sides of the upper and middle part of the bracket, a meter is arranged on the lower and middle part of the bracket, close to the driving mechanism, a steel wire rope is wound around the driving mechanism, one end of the steel wire rope passes through the meter, passes around the two groups of guide pulley blocks in sequence and is wound around the lifting mechanism, a bridge pulley block is hung on the steel wire rope between the two groups of guide pulley blocks, a weight assembly is hung below the bridge pulley block, the bridge pulley block is lifted and lowered reciprocatingly along a guide rail arranged on the bracket, two electromagnetic switches are arranged on the bracket, and the travel of the weight assembly is limited by the electromagnetic switches.

[0007] Preferably, the bracket includes a base and a top frame arranged on the base, the top frame is a frame structure formed by connecting four columns and multiple cross bars, multiple guide rails are vertically arranged on both sides of the top frame, and the bridge pulley block reciprocates and rises and falls along the guide rails.

[0008] Preferably, the lifting mechanism or driving mechanism includes a reduction motor, a reel, a reciprocating assembly, a reel frame and a mounting plate. The reel is mounted on the mounting plate through the reel frame. The reel includes one or more cylindrical shafts. A reduction motor is provided at one end of the reel and a reciprocating assembly is provided at the other end of the reel. The reciprocating assembly drives the mounting plate to perform left and right reciprocating motion.

[0009] Preferably, the reciprocating assembly includes a sprocket chain portion and a bidirectional lead screw, a sprocket in the sprocket chain portion is installed at one end of the reel, and another sprocket in the sprocket chain portion is installed at one end of the bidirectional lead screw, the two sprockets are meshed by a chain, both ends of the bidirectional lead screw are rotatably installed in two mounting seats, and the mounting seats are fixedly installed on the mounting plate, the middle part of the bidirectional lead screw is arranged in a nut mounting seat, and the nut mounting seat is installed on the base.

[0010] Preferably, the mounting plate is movably mounted on the base via a sliding support assembly, the sliding support assembly comprises a roller groove, a roller wheel, a back pressure roller and a support roller, at least two roller wheels are arranged on the base, a roller groove is arranged on one side of the bottom of the mounting plate, the roller groove is installed at the roller wheel, and is pressed against the back of the roller groove by a back pressure roller arranged on the base to prevent the base from shifting, and the other side of the bottom of the mounting plate is supported by at least two support rollers, and the support roller is installed on the base.

[0011] Preferably, the bridge pulley block includes multiple sets of movable pulley assemblies whose number matches the number of the cylindrical shafts, the movable pulley assembly includes two fixed pulleys and a pulley fixing frame, the fixed pulley is rotatably mounted in the pulley fixing frame, and the multiple pulley fixing frames are connected into a whole through connecting rods, and one or more sets of weight assemblies are detachably arranged at the bottom of the pulley fixing frame.

[0012] Preferably, the weight assembly includes weights and a weight box, in which one or more weights can be placed and retrieved; upper ear plates are provided at the middle positions on both sides of the top of the weight box, upper connecting holes are provided on the upper ear plates, and the weights are hinged to the bottom of the pulley fixing frame through the upper connecting holes; lower ear plates are provided at the middle positions on both sides of the bottom of the weight box, lower connecting holes are provided on the lower ear plates, and a group of weight assemblies are hung at the lower connecting holes; slide grooves are provided on both sides of the weight box, and the slide grooves are clamped on the outside of the guide rails.

[0013] Preferably, a magnet is arranged on the outside of a weight box located at the most side, two electromagnetic switches are arranged on the side of the top frame, the weight assembly is limited by induction magnets, and the electromagnetic switches are adapted to the magnets.

[0014] Preferably, the guide pulley group includes a top pulley and a middle pulley, the top pulley is installed on the top of the top frame through a pulley seat, and the middle pulley is installed in the middle of the top frame through a pulley seat, and the number of top pulleys and the number of middle pulleys are both compatible with the number of cylindrical shafts.

[0015] Preferably, a rope blocking plate is provided around the pulley seat, and the wire rope passes around the top pulley and the middle pulley and is blocked by the rope blocking plate.

[0016] In the utility model, the pre-tightening of the wire rope is achieved by the weight assembly, and the pre-tightening load of the wire rope is adjusted by increasing or decreasing the number of weight assemblies; the travel limitation of the weight assembly on the guide rail is achieved by the magnetic switch induction magnet; the detection of the rope winding performance of the lifting mechanism is achieved by winding the wire rope wound on the driving mechanism onto the lifting mechanism, and the detection of the rope arrangement performance of the lifting mechanism is achieved by winding the wire rope wound on the lifting mechanism onto the driving mechanism. Therefore, this platform has the detection of both rope arrangement performance and rope winding performance, and can also measure the length of the wire rope wound on the lifting mechanism by a meter, which greatly reduces the space cost, time cost and economic cost required for the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a schematic diagram of the overall structure of the utility model from another angle;

[0019] In the figure: 1, bracket; 2, guide pulley block; 3, bridge pulley block; 4, weight assembly; 5, driving mechanism; 6, lifting mechanism; 7, meter; 8, electromagnetic switch; 9, wire rope; 10, base; 11, top frame; 12, guide rail; 20, top pulley; 21, middle pulley; 30, movable pulley assembly; 40, weight; 41, weight box; 50, reduction motor; 51, reel; 52, reciprocating assembly; 53, reel frame; 54, mounting plate; 55, sliding support assembly; 300, fixed pulley; 301, pulley fixing frame; 510, cylindrical shaft; 520, sprocket chain portion; 521, bidirectional screw; 522, mounting seat; 523, nut mounting seat; 550, roller groove; 551, roller; 552, back pressure roller; 553, support roller. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings:

[0021] like Figure 1 and Figure 2 A multifunctional test platform for a lifting mechanism of a window cleaning machine is shown, comprising a bracket 1, a guide pulley block 2, a bridge pulley block 3, a weight assembly 4, a driving mechanism 5, a lifting mechanism 6, a meter counter 7 and an electromagnetic switch 8. The driving mechanism 5 and the lifting mechanism 6 are respectively arranged on both sides of the bottom of the bracket 1, and two groups of guide pulley blocks 2 are respectively arranged on both sides of the middle and upper part of the bracket 1. A meter counter 7 is arranged on one side of the middle and lower part of the bracket 1 close to the driving mechanism 5. A steel wire rope 9 is wound around the driving mechanism 5, one end of the steel wire rope 9 passes through the meter counter 7, passes around the two groups of guide pulley blocks 2 in turn, and is wound around the lifting mechanism 6. A bridge pulley block 3 is hung on the steel wire rope 9 between the two groups of guide pulley blocks 2, and a weight assembly 4 is hung below the bridge pulley block 3. The bridge pulley block 3 is lifted and lowered reciprocatingly along a guide rail 12 arranged on the bracket 1, and two electromagnetic switches 8 are arranged on the bracket 1, and the travel of the weight assembly 4 is limited by the electromagnetic switch 8.

[0022] The bracket 1 includes a base 10 and a top frame 11 arranged on the base 10. The top frame 11 is a frame structure connected by four columns and multiple cross bars. Multiple guide rails 12 are vertically arranged on both sides of the top frame 11, and the bridge pulley block 3 reciprocates and rises and falls along the guide rails 12.

[0023] The lifting mechanism 6 or the driving mechanism 5 includes a reduction motor 50, a reel 51, a reciprocating assembly 52, a reel frame 53 and a mounting plate 54. The reel 51 is installed on the mounting plate 54 through the reel frame 53. The reel 51 includes one or more cylindrical shafts 510. Therefore, this platform is suitable for the detection of reel-type lifting mechanisms with unlimited number of connections. A reduction motor 50 is arranged at one end of the reel 51, and a reciprocating assembly 52 is arranged at the other end of the reel 51. The reciprocating assembly 52 drives the mounting plate 54 to reciprocate left and right.

[0024] The reciprocating assembly 52 includes a sprocket chain portion 520 and a bidirectional lead screw 521, wherein one sprocket in the sprocket chain portion 520 is mounted at one end of the reel 51, and the other sprocket in the sprocket chain portion 520 is mounted at one end of the bidirectional lead screw 521, and the two sprockets are engaged by a chain, and both ends of the bidirectional lead screw 521 are rotatably mounted in two mounting seats 522, and the mounting seats 522 are fixedly mounted on the mounting plate 54, and the middle portion of the bidirectional lead screw is arranged in a nut mounting seat 523, and the nut mounting seat 523 is mounted on the base 10.

[0025] The mounting plate 54 is movably mounted on the base 10 through a sliding support assembly 55, and the sliding support assembly 55 includes a roller groove 550, a roller 551, a back pressure roller 552 and a support roller 553. At least two rollers 551 are arranged on the base 10, and a roller groove 550 is arranged on one side of the bottom of the mounting plate 54. The roller groove 550 is installed at the roller 551, and is pressed against the back of the roller groove 550 by a back pressure roller 552 arranged on the base 10 to prevent the base 10 from shifting. The other side of the bottom of the mounting plate 54 is supported by at least two support rollers 553, and the support roller 553 is installed on the base 10.

[0026] The bridge pulley block 3 includes multiple sets of movable pulley assemblies 30 whose number matches the number of cylindrical shafts 510. The movable pulley assembly 30 includes two fixed pulleys 300 and a pulley fixing frame 301. The fixed pulley 300 can be rotatably installed in the pulley fixing frame 301. Multiple pulley fixing frames 301 are connected into a whole through connecting rods. One or more sets of weight assemblies 4 are detachably arranged at the bottom of the pulley fixing frame 301. Finally, the number of weight assemblies 4 is determined according to the actual working load to load and pre-tighten the wire rope 9.

[0027] The weight assembly 4 includes a weight 40 and a weight box 41, in which one or more weights 40 can be placed and taken out; upper ear plates are provided at the middle positions on both sides of the top of the weight box 41, and upper connecting holes are provided on the upper ear plates, which are hinged to the bottom of the pulley fixing frame 301 through the upper connecting holes; lower ear plates are provided at the middle positions on both sides of the bottom of the weight box 41, and lower connecting holes are provided on the lower ear plates, and the next group of weight assemblies 4 are hung at the lower connecting holes; slide grooves are provided on both sides of the weight box 41, and the slide grooves are stuck on the outside of the guide rail 12. A magnet is provided on the outside of a weight box 41 located at the most side, and two electromagnetic switches 8 are provided on the side of the top frame 11, and the weight assembly 4 is limited by induction magnets, and the electromagnetic switches 8 are adapted to the magnets.

[0028] The guide pulley block 2 includes a top pulley 20 and a middle pulley 21. The top pulley 20 is installed on the top of the top frame 11 through a pulley seat, and the middle pulley 21 is installed in the middle of the top frame 11 through a pulley seat. The number of the top pulleys 20 and the number of the middle pulleys 21 are both compatible with the number of the cylindrical shafts 510. A rope blocking plate is arranged around the pulley seat, and the wire rope 9 passes around the top pulley 20 and the middle pulley 21 and is blocked by the rope blocking plate in the anti-slip groove.

[0029] The workflow of the test platform is as follows:

[0030] When testing the rope coiling performance of the lifting mechanism 6, one end of the wire rope 9 wound on the drum 51 of the driving mechanism 5 passes through the meter 7, and then passes around the middle pulley 21, the top pulley 20, the movable pulley assembly 30, the top pulley 20 and the middle pulley 21 in turn, and is finally fixed on the drum 51 of the lifting mechanism 6; the weight assembly 4 is hinged to the bottom of the pulley fixing frame 301 through a pin, and the number of weight assemblies 4 is adjusted according to the actual working load to ensure that the total mass of the weight assembly 4 is not less than the actual working load, so as to pre-tighten the wire rope 9; the slide grooves on both sides of the weight box 41 are stuck on the outside of the guide rail 12, and the reduction motor 50 of the lifting mechanism 6 is started to drive the drum 51 of the lifting mechanism 6 to rotate, and the wire rope 9 is coiled onto the drum 51 of the lifting mechanism 6; in the process, due to the winding of the wire rope 9 on the drum 51 of the driving mechanism 5 The winding diameter is inconsistent with the winding diameter of the wire rope on the drum 51 of the lifting mechanism 6, so the weight assembly 4 will reciprocate up and down along the guide rail 12. Two electromagnetic switches 8 are arranged on the side of the top frame 11, and a magnet is arranged on the outside of a weight box 41 located at the side. The travel of the weight assembly on the guide rail is limited by the magnetic switch sensing magnet to prevent the weight assembly 4 from detaching from the guide rail 12; during the rope winding process, the reciprocating assembly 52 drives the drum 51 to move left and right, so that the wire rope 9 is wound on the cylindrical shaft 510, until the wire rope 9 wound on the drum 51 of the driving mechanism 5 is pre-tightened and wound on the drum 51 of the lifting mechanism 6, and then the reduction motor 50 of the lifting mechanism 6 is turned off. At this time, the rope winding process of the lifting mechanism 6 is ended, the wire rope length of the meter 7 is recorded, and the rope winding performance of the lifting mechanism 6 is checked.

[0031] When testing the rope-laying performance of the lifting mechanism 6, the reduction motor 50 of the driving mechanism 5 is turned on to drive the drum 51 of the driving mechanism 5 to rotate, and the wire rope 9 is laid from the drum 51 on the lifting mechanism 6 to the drum 51 of the driving mechanism 5. After the wire rope wound on the drum 51 of the lifting mechanism 6 is pre-tightened and laid on the drum 51 of the driving mechanism 5, the reduction motor 50 of the driving mechanism 5 is turned off. At this time, the rope-laying process of the lifting mechanism 6 is completed, and the wire rope length of the meter 7 is recorded again to test the rope-laying performance of the lifting mechanism 6.

[0032] By such a reciprocating test, the rope coiling and arranging performance of the lifting mechanism 6 and the length information of the windable wire rope 9 can be obtained, thereby ensuring the reliability and stability of the lifting mechanism 6 during the operation of the window cleaning machine.

[0033] The above embodiments are only some descriptions of the concept and implementation of the utility model, and are not intended to limit the concept and implementation of the utility model. Under the concept of the utility model, technical solutions that have not been substantially changed are still within the scope of protection.

Claims

1. A multifunctional test platform for a lifting mechanism of a window cleaning machine, characterized in that: The invention comprises a support (1), a guide pulley block (2), a bridge pulley block (3), a weight assembly (4), a driving mechanism (5), a lifting mechanism (6), a meter counter (7) and an electromagnetic switch (8), wherein the driving mechanism (5) and the lifting mechanism (6) are arranged on both sides of the bottom of the support (1), two sets of guide pulley blocks (2) are arranged on both sides of the upper middle part of the support (1), a meter counter (7) is arranged on one side of the lower middle part of the support (1) close to the driving mechanism (5), and a steel wire rope (9) is wound around the driving mechanism (5). One end of the steel wire rope (9) passes through the meter (7), passes through the two guide pulley blocks (2) in sequence, and is wound around the lifting mechanism (6). A bridge pulley block (3) is hung on the steel wire rope (9) between the two guide pulley blocks (2). A weight assembly (4) is hung below the bridge pulley block (3). The bridge pulley block (3) is lifted and lowered reciprocatingly along a guide rail (12) provided on the bracket (1). Two electromagnetic switches (8) are provided on the bracket (1), and the travel of the weight assembly (4) is limited by the electromagnetic switches (8).

2. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 1 is characterized in that: The support (1) comprises a base (10) and a top frame (11) arranged on the base (10); the top frame (11) is a frame structure formed by connecting four uprights and a plurality of cross bars; a plurality of guide rails (12) are vertically arranged on both sides of the top frame (11); and the bridge pulley block (3) reciprocates and rises and falls along the guide rails (12).

3. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 2 is characterized in that: The lifting mechanism (6) or driving mechanism (5) comprises a reduction motor (50), a reel (51), a reciprocating assembly (52), a reel frame (53) and a mounting plate (54); the reel (51) is mounted on the mounting plate (54) via the reel frame (53); the reel (51) comprises one or more cylindrical shafts (510); a reduction motor (50) is arranged at one end of the reel (51); a reciprocating assembly (52) is arranged at the other end of the reel (51); the reciprocating assembly (52) drives the mounting plate (54) to perform left-right reciprocating motion.

4. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 3 is characterized in that: The reciprocating assembly (52) comprises a sprocket chain portion (520) and a bidirectional lead screw (521), wherein one sprocket in the sprocket chain portion (520) is mounted on one end of the reel (51), and the other sprocket in the sprocket chain portion (520) is mounted on one end of the bidirectional lead screw (521), and the two sprockets are meshed by a chain, and both ends of the bidirectional lead screw (521) are rotatably mounted in two mounting seats (522), and the mounting seats (522) are fixedly mounted on the mounting plate (54), and the middle portion of the bidirectional lead screw is arranged in a nut mounting seat (523), and the nut mounting seat (523) is mounted on the base (10).

5. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 3 is characterized in that: The mounting plate (54) is movably mounted on the base (10) via a sliding support assembly (55); the sliding support assembly (55) comprises a roller groove (550), a roller wheel (551), a back pressure roller (552) and a support roller (553); at least two roller wheels (551) are arranged on the base (10); a roller groove (550) is arranged on one side of the bottom of the mounting plate (54); the roller groove (550) is mounted on the roller wheel (551) and is pressed against the back of the roller groove (550) by a back pressure roller (552) arranged on the base (10) to prevent the base (10) from shifting; the other side of the bottom of the mounting plate (54) is supported by at least two support rollers (553); the support roller (553) is mounted on the base (10).

6. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 3 is characterized by: The bridge pulley block (3) comprises a plurality of movable pulley assemblies (30) whose number matches the number of the cylindrical shafts (510); the movable pulley assemblies (30) comprise two fixed pulleys (300) and a pulley fixing frame (301); the fixed pulleys (300) are rotatably mounted in the pulley fixing frame (301); the plurality of pulley fixing frames (301) are connected into a whole via a connecting rod; and one or more weight assemblies (4) are detachably arranged at the bottom of the pulley fixing frame (301).

7. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 6 is characterized in that: The weight assembly (4) comprises a weight (40) and a weight box (41), wherein one or more weights (40) are placed in the weight box (41) in a removable manner; upper ear plates are provided at the middle positions on both sides of the top of the weight box (41), and upper connecting holes are provided on the upper ear plates, which are hinged to the bottom of the pulley fixing frame (301) through the upper connecting holes; lower ear plates are provided at the middle positions on both sides of the bottom of the weight box (41), and lower connecting holes are provided on the lower ear plates, and the next group of weight assemblies (4) are hung at the lower connecting holes; and slide grooves are provided on both sides of the weight box (41), and the slide grooves are clamped on the outside of the guide rail (12).

8. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 7 is characterized in that: A magnet is arranged on the outside of a weight box (41) located at the most side, and two electromagnetic switches (8) are arranged on the side of the top frame (11). The weight assembly (4) is limited by induction magnets, and the electromagnetic switches (8) are adapted to the magnets.

9. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 3 is characterized by: The guide pulley block (2) comprises a top pulley (20) and a middle pulley (21), wherein the top pulley (20) is mounted on the top of the top frame (11) via a pulley seat, and the middle pulley (21) is mounted on the middle of the top frame (11) via a pulley seat, and the number of the top pulleys (20) and the number of the middle pulleys (21) are both compatible with the number of the cylindrical shafts (510).

10. The multifunctional test platform for the lifting mechanism of the window cleaning machine according to claim 9, characterized in that: A rope blocking plate is arranged around the pulley seat, and the steel wire rope (9) passes around the top pulley (20) and the middle pulley (21) and is blocked by the rope blocking plate.

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