Load testing machine special for lifting mechanism of window cleaning machine

Abstract

The utility model relates to a special load testing machine for a lifting mechanism of a window cleaning machine. The special load testing machine comprises an underframe rectangular tube, a transverse connecting square tube, a stopper square tube, an H-shaped cross beam, an upright post, a cantilever beam, a middle bracket, an electronic weighing device, a turnbuckle and a steering wheel assembly, the two chassis rectangular pipes are arranged in parallel at intervals, the ends of the chassis rectangular pipes are connected with the transverse connecting square pipes, the two H-shaped beams are connected to the chassis rectangular pipes, and the sides, close to the transverse connecting square pipes, of the chassis rectangular pipes are connected with the head blocking square pipes. A stand column is vertically connected to the middle of the transverse connecting square pipe, a cantilever beam is vertically connected to the other end of the stand column, an electronic weighing device is vertically connected to the other end of the cantilever beam, and a turnbuckle is connected to the other end of the electronic weighing device. A steering wheel assembly is connected to the blocking head square pipe and located below the turnbuckle. A middle support is vertically connected to the side, away from the cantilever beam, of the stand column, a small pulley is rotatably connected to the middle support, and a supporting screw is arranged at the end of the middle support.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary detection tooling for manufacturing window cleaning machines, and more specifically to a load testing machine dedicated to a lifting mechanism of a window cleaning machine. Background Art

[0002] With the development of society, there are more and more high-rise buildings, so there are more and more buildings equipped with window cleaning machines. At the same time, as the appearance of buildings changes more and more, the load of window cleaning machines is also getting bigger and bigger. The total load of the original lifting mechanism (including platform, wire rope, platform load) has increased from the earliest 800kg to the current 3200kg.

[0003] However, this has brought severe challenges to the service life of the key components of the lifting mechanism, the core component of the window cleaning machine. Since the window cleaning machine is operated on the roof of a high-rise building, it is impossible to conduct full-load operation tests of the lifting mechanism in the factory (especially for the newly developed lifting mechanism). As a result, some problems have arisen. After the window cleaning machine is installed on site, it will take two to three years or even seven to eight years for some deficiencies in component structure and material to be discovered and improved.

[0004] In order to improve the overall quality of window cleaning machine products and expose these shortcomings earlier in the factory's new product development and equipment component testing, there is an urgent need for a load testing machine dedicated to the lifting mechanism of the window cleaning machine.

[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0006] The purpose of the utility model is to provide a load testing machine dedicated to the lifting mechanism of a window cleaning machine. The load testing machine enables the lifting mechanism of the window cleaning machine to be continuously tested for total load in a factory, which is of great help to the research and development of new products of the lifting mechanism of the window cleaning machine and the testing of the service life of the internal components of the lifting mechanism; at the same time, more accurate data on the test life of each component is obtained.

[0007] The utility model provides a load testing machine dedicated to the lifting mechanism of a window cleaning machine, comprising a rectangular tube of a base frame, a cross-connecting square tube, a stopper square tube, an H-shaped crossbeam, a column, a cantilever beam, an intermediate bracket, an electronic weighing device, a turnbuckle screw and a steering wheel assembly; two rectangular tubes of the base frame are arranged in parallel at intervals, the ends of the two rectangular tubes of the base frame are connected with the cross-connecting square tube, two H-shaped crossbeams are connected on the upper side of the rectangular tube of the base frame, the two H-shaped crossbeams are arranged in parallel at intervals, and the H-shaped crossbeam is perpendicular to the rectangular tube of the base frame; the stopper square tube is connected on the upper side of the rectangular tube of the base frame close to the cross-connecting square tube, and the stopper square tube and parallel to the H-shaped crossbeam; the column is vertically connected to the middle of the horizontal square tube, the cantilever beam is vertically connected to the other end of the column, the electronic weighing device is vertically connected to the other end of the cantilever beam, a display is provided on the electronic weighing device, and the other end of the electronic weighing device is connected to the basket screw; the steering wheel assembly is connected to the stopper square tube, and the steering wheel assembly is located below the basket screw; the middle bracket is vertically connected to the side of the column away from the cantilever beam, a small pulley is rotatably connected to the middle, and a supporting screw is provided at the end of the middle bracket.

[0008] Furthermore, the steering wheel assembly includes a fixed plate, a first pulley and a second pulley; the fixed plate is fixedly connected to the stopper square tube, and the first pulley and the second pulley are rotatably connected to the fixed plate.

[0009] Furthermore, the column includes a first column and a second column, and the first column and the second column are spaced apart.

[0010] Furthermore, the load testing machine also includes an adjustable connecting plate, which is connected to the first column and the second column on one side away from the cantilever beam; a plurality of vertical holes are arranged at intervals on the adjustable connecting plate, and the intermediate bracket is vertically connected to the adjustable connecting plate by fixing bolts passing through the vertical holes.

[0011] Furthermore, the rectangular tube of the base frame is connected and fixed to the H-shaped beam with screws.

[0012] Furthermore, a thickened stress-bearing pad is welded at the connection between the column and the cantilever beam.

[0013] Furthermore, the steering wheel assembly is located between the first column and the second column, and the thickness of the steering wheel assembly is the same as the distance between the first column and the second column.

[0014] Furthermore, the fixing plate and the front end of the stopper square tube are fixed by welding.

[0015] Furthermore, a drill hole is provided at one end of the cantilever beam away from the column, a screw is arranged in the drill hole, and the upper end of the electronic weighing device is threadedly connected through the screw.

[0016] The utility model is a load testing machine specially used for the lifting mechanism of the window cleaning machine. It adopts a basket screw to pre-tighten and pressurize the steel wire rope, collects the load data of the electronic weighing device, and uses a surrounding double-speed chain on the outside of the drum to transmit the load force to the drum mechanism. Since the double-speed chain is used as the final conductor, when the equipment is running, there is only rolling friction but no sliding friction between the drum and the double-speed chain. The running load is more accurately stressed, so that the internal components of the entire lifting mechanism can be more completely verified and tested. On the other hand, the lifting mechanism of the window cleaning machine can be continuously tested for the total load in the factory, which is of great help to the research and development of new products of the lifting mechanism of the window cleaning machine and the testing of the service life of the internal components of the lifting mechanism. At the same time, more accurate data is obtained on the test life of each component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic plan view of the structure of a load testing machine dedicated to the lifting mechanism of a window cleaning machine provided in an embodiment of the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the top view of the rectangular tube of the base frame, the cross-connecting square tube, the square tube of the head, the H-shaped beam and the column of the medium load testing machine.

[0019] Figure 3 for Figure 1 Schematic diagram of the medium load testing machine in use.

[0020] Figure 4 for Figure 1 Schematic diagram of the working status of the medium load testing machine inside the lifting mechanism.

[0021] Figure 5 for Figure 1 Partial plan view of the medium load testing machine.

[0022] The reference numerals and components involved in the drawings are as follows:

[0023] 1. Rectangular tube of base frame 2. Horizontal square tube 3. Square tube of stopper

[0024] 4. H-shaped beam 5. Column 51. First column

[0025] 52, second column 6, cantilever beam 61, drilling

[0026] 7. Intermediate bracket 71, small pulley 72, supporting screw

[0027] 8. Electronic weighing device 81. Display 9. Turnbuckle

[0028] 100, steering wheel assembly 110, fixing plate 120, first pulley

[0029] 130, second pulley 200, lifting mechanism 210, double-speed chain

[0030] 220, vertical pulley 300, wire rope 400, adjustable connecting plate

[0031] 410, vertical hole 420, fixing bolt 500, thickened bearing pad DETAILED DESCRIPTION

[0032] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] The terms "first", "second", "third", "fourth" and the like in the specification and claims of the present utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0034] Example 1

[0035] Figure 1 A schematic diagram of the planar structure of a load testing machine dedicated to the lifting mechanism of a window cleaning machine provided in an embodiment of the utility model, Figure 2 for Figure 1 A top view of the rectangular tube of the base frame, the cross-connecting square tube, the square tube of the stopper, the H-shaped beam and the column of the medium load testing machine. Figure 4 for Figure 1 Another schematic diagram of the medium load testing machine. Figure 1 , Figure 2 , Figure 4The load testing machine dedicated to the lifting mechanism of the window cleaning machine provided by the embodiment of the utility model comprises a base frame rectangular tube 1, a cross-connecting square tube 2, a stopper square tube 3, an H-shaped crossbeam 4, a column 5, a cantilever beam 6, an intermediate bracket 7, an electronic weighing device 8, a basket screw 9 and a steering wheel assembly 100; the two base frame rectangular tubes 1 are arranged in parallel at intervals, the ends of the two base frame rectangular tubes 1 are connected with the cross-connecting square tubes 2, and two H-shaped crossbeams 4 are connected on the top of the base frame rectangular tube 1, and the two H-shaped crossbeams 4 are arranged in parallel and at intervals, and the H-shaped crossbeam 4 is perpendicular to the base frame rectangular tube 1; the stopper square tube 3 is connected on the top of the base frame rectangular tube 1 close to the side of the cross-connecting square tube 2, and the stopper square tube 3 and The H-shaped crossbeam 4 is parallel; the column 5 is vertically connected to the middle of the horizontal square tube 2, the cantilever beam 6 is vertically connected to the other end of the column 5, the electronic weighing device 8 is vertically connected to the other end of the cantilever beam 6, the electronic weighing device 8 is provided with a display 81, and the other end of the electronic weighing device 8 is connected to the basket screw 9; the steering wheel assembly 100 is connected to the stopper square tube 3, and the steering wheel assembly 100 is located below the basket screw 9; the middle bracket 7 is vertically connected to the side of the column 5 away from the cantilever beam 6, a small pulley 71 is rotatably connected to the middle bracket 7, and a support screw 72 is provided at the end of the middle bracket 7.

[0036] The load testing machine dedicated to the lifting mechanism of the window cleaning machine of the present invention is provided with bolt holes for connecting the lifting mechanism 200 on the H-shaped crossbeam 4 and the rectangular tube 1 of the base frame; when in use, under the lifting mechanism 200 to be tested, first find the corresponding hole position on the H-shaped crossbeam 4 according to the model of the lifting mechanism 200, connect and fix the lifting mechanism 200 with the H-shaped crossbeam 4 with bolts, then let the front end of the lifting mechanism 200 abut against the stopper square tube 3, put down the lifting mechanism 200, and fix it with screws on the corresponding holes of the rectangular tube 1 of the base frame; unscrew the supporting screw 72 at the other end of the intermediate bracket 7 and support it on the box shell of the lifting mechanism 200; then select the times of the corresponding length (generally the length is about 4 cm longer than the circumference of the drum) according to the diameter of the reel of the lifting mechanism 200 to be tested. The chain 210 is wound around the outer ring of the drum of the lifting mechanism 200, and the joint of the double-speed chain 210 is fastened to form a loop of the double-speed chain 210. Subsequently, one end of the wire rope 300 is passed through the loop formed by the double-speed chain 210 and fixed with the wire rope 300 rope clamp. The other end of the wire rope 300 is ferried through the vertical pulley 220, the small pulley 71, and the steering pulley group in the lifting mechanism 200, and finally connected and fixed to the lower end of the basket screw 9. However, the basket screw 9 needs to be in a fully relaxed state at this time. At this point, the installation work is basically completed; after the load testing machine dedicated to the lifting mechanism 200 is fixedly installed with the lifting mechanism 200 to be tested through the above steps in advance, the lifting mechanism 200 is turned on to make the entire lifting mechanism 200 run once first to check whether there is any interference with the rope head of the wire rope 300;

[0037] Confirm the total load of the lifting mechanism 200 in this test. When the lifting mechanism 200 is in the open state, gradually tighten the turnbuckle screws so that the electronic weighing device 8 begins to be gradually stressed. When the value on the display 81 of the electronic weighing device 8 is the same as the total load of the lifting mechanism 200 in this test, stop tightening the turnbuckle screws 9 and keep this reading to allow the lifting mechanism 200 in this test to continue to operate according to the test required time.

[0038] The utility model is a load testing machine specially used for the lifting mechanism of a window cleaning machine, which is suitable for simulation tests of load operation of lifting mechanisms of various types; a basket screw 9 is used to pre-tighten and pressurize the wire rope 300, load data of the electronic weighing device 8 is collected, and outside the drum, a surrounding double-speed chain 210 is used to transmit the load force to the drum mechanism. Since the double-speed chain 210 is used as the final conductor, when the equipment is running, there is only rolling friction but no sliding friction between the drum and the double-speed chain 210, and the operating load is more accurately stressed, so that the internal components of the entire lifting mechanism 200 can be more completely verified and tested; on the other hand, the lifting mechanism 200 of the window cleaning machine can be continuously tested for total load in the factory, which is of great help to the research and development of new products of the lifting mechanism 200 of the window cleaning machine and the testing of the service life of the internal components of the lifting mechanism 200; at the same time, more accurate data is obtained on the test life of each component.

[0039] Figure 4 for Figure 1 Schematic diagram of the working state of the medium load test machine inside the lifting mechanism. Please refer to Figure 4 The steering wheel assembly 100 of the utility model includes a fixed plate 110, a first pulley 120 and a second pulley 130; the fixed plate 110 is fixedly connected to the stopper square tube 3, and the first pulley 120 and the second pulley 130 are rotatably connected to the fixed plate 110.

[0040] Further references Figure 1 , Figure 2 The column 5 of the utility model includes a first column 51 and a second column 52, and the first column 51 and the second column 52 are arranged at an interval. The steering wheel assembly 100 is located between the first column 51 and the second column 52, and the thickness of the steering wheel assembly 100 is the same as the distance between the first column 51 and the second column 52. The fixing plate 110 is fixed to the front end of the stopper square tube 3 by welding.

[0041] Figure 5 for Figure 1 Partial plan view of the medium load testing machine. Figure 5 The load testing machine of the utility model also includes an adjustable connecting plate 400, which is connected to the first column 51 and the second column 52 on one side away from the cantilever beam 6; a plurality of vertical holes 410 are arranged at intervals on the adjustable connecting plate 400, and the intermediate bracket 7 is vertically connected to the adjustable connecting plate 400 by passing fixing bolts 420 through the vertical holes 410.

[0042] It should be noted that the design of the multiple vertical holes 410 spaced apart on the adjustable connecting plate 400 can adjust the intermediate bracket 7 up and down according to the height of different lifting boxes.

[0043] Furthermore, the base frame rectangular tube 1 is connected and fixed to the H-shaped crossbeam 4 by screws.

[0044] Further references Figure 1 A thickened stress-bearing pad 500 is welded at the connection between the column 5 and the cantilever beam 6, thereby improving the connection strength.

[0045] Furthermore, a bore hole 61 is provided at one end of the cantilever beam 6 away from the column 5 , and a screw is disposed in the bore hole 61 , through which the upper end of the electronic weighing device 8 is threadedly connected.

[0046] Based on the above description, it can be seen that the advantages of the utility model are:

[0047] The utility model is a load testing machine specially used for the lifting mechanism of a window cleaning machine, which is suitable for simulation tests of load operation of lifting mechanisms of various types; a basket screw 9 is used to pre-tighten and pressurize the wire rope 300, load data of the electronic weighing device 8 is collected, and outside the drum, a surrounding double-speed chain 210 is used to transmit the load force to the drum mechanism. Since the double-speed chain 210 is used as the final conductor, when the equipment is running, there is only rolling friction but no sliding friction between the drum and the double-speed chain 210, and the operating load is more accurately stressed, so that the internal components of the entire lifting mechanism 200 can be more completely verified and tested; on the other hand, the lifting mechanism 200 of the window cleaning machine can be continuously tested for total load in the factory, which is of great help to the research and development of new products of the lifting mechanism 200 of the window cleaning machine and the testing of the service life of the internal components of the lifting mechanism 200; at the same time, more accurate data is obtained on the test life of each component.

[0048] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A load testing machine dedicated to the lifting mechanism of a window cleaning machine, characterized in that: It comprises a rectangular tube of the base frame (1), a cross-connecting square tube (2), a square tube of the head (3), an H-shaped crossbeam (4), a column (5), a cantilever beam (6), an intermediate bracket (7), an electronic weighing device (8), a turnbuckle screw (9) and a steering wheel assembly (100); The two base frame rectangular tubes (1) are arranged in parallel at intervals, the ends of the two base frame rectangular tubes (1) are connected to the cross-connecting square tube (2), and two H-shaped cross beams (4) are connected on the top of the base frame rectangular tube (1), the two H-shaped cross beams (4) are arranged in parallel at intervals, and the H-shaped cross beams (4) and the base frame rectangular tube (1) are perpendicular; The stopper square tube (3) is connected to the upper side of the base frame rectangular tube (1) close to the horizontal connecting square tube (2), and the stopper square tube (3) is parallel to the H-shaped crossbeam (4); The column (5) is vertically connected to the middle of the horizontally connected square tube (2), the cantilever beam (6) is vertically connected to the other end of the column (5), the electronic weighing device (8) is vertically connected to the other end of the cantilever beam (6), the electronic weighing device (8) is provided with a display (81), and the other end of the electronic weighing device (8) is connected to the turnbuckle (9); The steering wheel assembly (100) is connected to the stopper square tube (3), and the steering wheel assembly (100) is located below the turnbuckle screw (9); The intermediate bracket (7) is vertically connected to the side of the column (5) away from the cantilever beam (6), a small pulley (71) is rotatably connected to the intermediate bracket (7), and a supporting screw (72) is provided at the end of the intermediate bracket (7).

2. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 1 is characterized in that: The steering wheel assembly (100) comprises a fixed plate (110), a first pulley (120) and a second pulley (130); the fixed plate (110) is fixedly connected to the stopper square tube (3), and the first pulley (120) and the second pulley (130) are rotatably connected to the fixed plate (110).

3. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 1, characterized in that: The column (5) comprises a first column (51) and a second column (52), and the first column (51) and the second column (52) are arranged at an interval.

4. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 3 is characterized in that: The load testing machine further comprises an adjustable connecting plate (400), wherein the adjustable connecting plate (400) is connected to the first column (51) and the second column (52) on a side away from the cantilever beam (6); a plurality of vertical holes (410) are arranged at intervals on the adjustable connecting plate (400), and the intermediate bracket (7) is vertically connected to the adjustable connecting plate (400) by means of fixing bolts (420) passing through the vertical holes (410).

5. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 1, characterized in that: The base frame rectangular tube (1) is connected and fixed to the H-shaped crossbeam (4) by means of screws.

6. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 1, characterized in that: A thickened stress-bearing pad (500) is welded at the connection between the column (5) and the cantilever beam (6).

7. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 3, characterized in that: The steering wheel assembly (100) is located between the first column (51) and the second column (52), and the thickness of the steering wheel assembly (100) is the same as the distance between the first column (51) and the second column (52).

8. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 2, characterized in that: The fixing plate (110) and the front end of the stopper square tube (3) are fixed by welding.

9. The load testing machine dedicated to the lifting mechanism of the window cleaning machine according to claim 1, characterized in that: A drilling hole (61) is provided at one end of the cantilever beam (6) away from the column (5), and a screw is arranged in the drilling hole (61), and the upper end of the electronic weighing device (8) is threadedly connected through the screw.

Images