A movable directional noise reduction device

Abstract

The present invention belongs to the technical field of noise reduction devices, and specifically is a movable directional noise reduction device, comprising a base; a group of mutually spliced ​​fixed plates are fixedly connected to the upper side of the base; a pair of movable plates are rotatably connected to both sides of the fixed plates through hinges; the fixed plates and the movable plates are both made of square steel and rock wool sandwich panels; a group of steel wire ropes are arranged on both sides of the fixed plates; the steel wire ropes are fixedly connected to the ground through expansion screw hooks; the fixed plates are obliquely pulled by multiple steel wire ropes, thereby improving the stability of the noise reduction device and improving the wind resistance, and by adjusting the angle of a pair of movable plates, a concave surface is formed between the fixed plate and the movable plate (the construction position is on one side of the concave surface), thereby performing precise directional noise reduction on the construction position, improving the convergence effect on noise, and reducing the impact of noise on surrounding residential areas.

Description

Technical Field

[0001] The invention belongs to the technical field of noise reduction devices, in particular to a movable directional noise reduction device. Background Art

[0002] When construction is underway at night, excavator operations, crane lifting, concrete pouring and other activities will generate considerable noise and echoes, affecting the rest of surrounding residents. In serious cases, complaints or reports may be received, and the construction project may be halted, seriously affecting the project's progress. Therefore, noise reduction devices are usually used to block construction noise and reduce noise pollution.

[0003] Regarding the existing related technologies, the inventors believe that the following defects often exist: the construction site noise reduction devices in the existing technology are usually made up of several sound insulation panels spliced ​​together, and the bottom is fixed to the ground by bolts. The wind resistance is poor, and the spliced ​​sound insulation panels are flat, which has a poor effect on noise convergence, resulting in less than ideal sound insulation effect.

[0004] To this end, the present invention provides a movable directional noise reduction device. Summary of the Invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problems is as follows: the movable directional noise reduction device described in the present invention includes a base; a group of mutually spliced ​​fixed plates are fixedly connected to the upper side of the base; a pair of movable plates are rotatably connected to the two sides of the fixed plates by hinges; the fixed plates and the movable plates are both made of square steel and rock wool sandwich panels; a group of steel wire ropes are arranged on both sides of the fixed plates; the steel wire ropes are fixed to the ground by expansion screw hooks; the construction site noise reduction device in the prior art is usually made of several sound insulation panels spliced ​​together, and the bottom is fixed to the ground by bolts, which has poor wind resistance, and the spliced ​​sound insulation panels are flat, which has poor noise convergence effect, resulting in unsatisfactory sound insulation effect; in this case, the present invention uses multiple steel wire ropes to obliquely pull the fixed plates, thereby improving the stability of the noise reduction device and improving the wind resistance, and by adjusting the angle of the pair of movable plates, a concave surface is formed between the fixed plate and the movable plate (the construction position is on one side of the concave surface), thereby accurately reducing the noise at the construction position, improving the noise convergence effect, and reducing the impact of noise on surrounding residential areas.

[0007] Preferably, a group of universal wheels and adjustable legs are evenly distributed on the lower side of the base; by providing the universal wheels, it is convenient to manually push the noise reduction device to the predetermined position, thereby improving the transfer efficiency. After reaching the predetermined position, the universal wheels are adjusted to leave the ground by adjusting the adjustable legs, thereby improving the stability of the base, and then it can be fixed by a steel wire rope. When it needs to be transferred again later, the steel wire rope is removed, and the adjustable legs are adjusted so that the universal wheels are in contact with the ground, thereby pushing the noise reduction device to move.

[0008] Material toggling mechanism, its both sides respectively have a cylinder pressure, and the cylinder pressure bar connects swing arm, and the swing arm end face has hook portion, and a bar passes position between the end of two swing arms and the hook portion.

[0009] Preferably, a circular groove is provided inside the support; a circular disc is rotatably connected inside the circular groove, and the circular disc and the circular groove are clearance-matched; the adjusting rod is fixedly connected to the circular disc, and the adjusting rod is rotatably connected to the support through the circular disc; a group of grooves are distributed on the surface of the circular disc; balls are provided between the grooves and the side walls of the circular groove; lubricating oil is added to the circular groove; in the process of adjusting the adjustable legs, since the entire weight of the device is applied to the support through the adjusting rod, the friction between the adjusting rod and the support needs to be reduced as much as possible, otherwise it will be difficult to adjust. By providing balls and lubricating oil, the friction resistance between the disc and the support can be effectively reduced, the rotation efficiency of the adjusting rod can be improved, and the problem of difficulty in adjustment due to excessive friction can be prevented.

[0010] Preferably, a collecting groove is provided at the bottom of the circular groove; the bottom of the circular groove is inclined from the edge toward the collecting groove; after long-term use, the friction between the disc, the circular groove, and the ball will produce metal chips due to wear, or other impurities will enter the circular groove, and over time, sludge will form in the circular groove, hindering the normal rotation of the disc. By setting up the collecting groove, the sludge can settle downward under the action of its own weight and enter the collecting groove along the inclined surface of the bottom and be collected, preventing the sludge from contacting the ball and the disc, thereby improving the rotation efficiency.

[0011] The top of the oil pump is connected with the oil drain plug, and the bottom of the oil pump is connected with the oil drain plug, and the oil drain plug is connected with the oil drain plug, and the oil drain plug is connected with the oil drain plug, so that the oil can be drained out of the oil drain plug.

[0012] Preferably, a funnel-shaped filter is fixedly connected to the inside of the collection tank, and the filter is located above the lower end of the oil guide rope; by setting the filter, the oil sludge can be filtered and isolated on the upper side of the filter to prevent the oil sludge from entering the inside of the oil guide rope and clogging the oil guide rope when the lower end of the oil guide rope absorbs lubricating oil. Setting the filter to a funnel shape can increase the filtration area and improve the filtration efficiency.

[0013] Preferably, one of the pressure plates is fixedly connected to an elastic block 1 on the upper side; an elastic block 2 is fixedly connected to the upper side of the bottom of the filter; both the elastic block 1 and the elastic block 2 are hollow structures and filled with air; the elastic block 1 and the elastic block 2 are connected by a conduit; the upper end of the elastic block 2 is fixedly connected to a movable piece; when the support plate squeezes the pressure plate, the elastic block 1 is also squeezed, and then the air in the elastic block 1 is filled into the elastic block 2 through the conduit, causing the elastic block 2 to expand and stretch, driving the movable piece to move upward, generating an upward liquid flow, thereby lifting the oil sludge on the upper side of the filter upward, preventing the oil sludge from filling the holes of the filter densely, thereby causing the filter to have a reduced oil passing efficiency, so that the lubricating oil can fully pass through the filter to reach the bottom of the collection tank.

[0014] Preferably, a group of through holes are evenly distributed on the surface of the movable sheet; by providing the through holes, the sludge can pass through the through holes to the bottom of the movable sheet, preventing the movable sheet from completely blocking the bottom of the filter screen, thereby reducing the filtering area of ​​the filter screen.

[0015] Preferably, a limiting tube is provided on the outer side of the elastic block 2, and the limiting tube is fixedly connected to the filter screen; by providing the limiting tube, when the elastic block 2 is inflated, the limiting tube can limit the lateral expansion of the elastic block 2, thereby allowing the elastic block 2 to fully expand along the length direction, increasing the movement amplitude of the movable sheet, and improving the efficiency of the oil sludge rising.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The movable directional noise reduction device described in the present invention improves the stability of the noise reduction device and its wind resistance by using multiple steel wire ropes to obliquely pull the fixed plate, and by adjusting the angle of a pair of movable plates, a concave surface is formed between the fixed plate and the movable plate (the construction position is located on one side of the concave surface), thereby accurately and directional noise reduction is performed at the construction position, improving the noise convergence effect and reducing the impact of noise on surrounding residential areas.

[0018] 2. The movable directional noise reduction device described in the present invention is convenient for manually pushing the noise reduction device to a predetermined position by setting universal wheels, thereby improving the transfer efficiency. After reaching the predetermined position, the universal wheels are lifted off the ground by adjusting the adjustable legs, thereby improving the stability of the base, and then fixed with a steel wire rope. When it needs to be transferred again later, the steel wire rope is removed, and the adjustable legs are adjusted so that the universal wheels are in contact with the ground, thereby pushing the noise reduction device to move. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a perspective view of the present invention;

[0021] Figure 2 yes Figure 1 A partial enlarged view of the middle part;

[0022] Figure 3 It is a three-dimensional diagram from another perspective of the present invention;

[0023] Figure 4 yes Figure 3 A partial enlarged view of point B in the middle;

[0024] Figure 5 is a cross-sectional view of the support in the present invention;

[0025] Figure 6 yes Figure 5 A partial enlarged view of point C in the middle.

[0026] In the figure: base 1, fixed plate 2, movable plate 3, wire rope 4, expansion screw hook 5, universal wheel 6, adjustable leg 7, support plate 8, fixed block 9, adjusting rod 10, adjusting block 11, lever 12, support 13, circular groove 14, disc 15, ball 16, collecting tank 17, oil guide rope 18, slider 19, pressure plate 20, spring 21, guide hole 22, filter 23, elastic block 1 24, elastic block 2 25, movable piece 26, through hole 27, limit tube 28. DETAILED DESCRIPTION

[0027] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0028] Example 1:

[0029] like Figures 1 to 4 As shown, a movable directional noise reduction device according to an embodiment of the present invention includes a base 1; a group of mutually spliced ​​fixed plates 2 are fixedly connected to the upper side of the base 1; a pair of movable plates 3 are rotatably connected to the two sides of the fixed plates 2 by hinges; the fixed plates 2 and the movable plates 3 are both made of square steel and rock wool sandwich panels; a group of steel wire ropes 4 are arranged on both sides of the fixed plate 2; the steel wire ropes 4 are fixed to the ground by expansion screw hooks 5; the construction site noise reduction device in the prior art is usually made of several sound insulation panels spliced ​​together, and the bottom is fixed to the ground by bolts, which has poor wind resistance. In addition, the spliced ​​sound insulation panels are flat, and their noise focusing effect is poor, resulting in unsatisfactory sound insulation effect; in this case, the present invention uses multiple steel wire ropes 4 to obliquely pull the fixed plate 2, thereby improving the stability of the noise reduction device and improving its wind resistance. By adjusting the angle of the pair of movable plates 3, a concave surface is formed between the fixed plate 2 and the movable plate 3 (the construction position is on one side of the concave surface), thereby accurately reducing noise at the construction position, improving the noise focusing effect, and reducing the impact of noise on surrounding residential areas.

[0030] A group of universal wheels 6 and adjustable legs 7 are evenly distributed on the lower side of the base 1; by setting the universal wheels 6, it is convenient to manually push the noise reduction device to the predetermined position, thereby improving the transfer efficiency. After reaching the predetermined position, the universal wheels 6 are adjusted to leave the ground by adjusting the adjustable legs 7, thereby improving the stability of the base 1, and then fixed by the wire rope 4. When it is needed to be transferred again later, the wire rope 4 is removed, and the adjustable legs 7 are adjusted to make the universal wheels 6 contact the ground, thereby pushing the noise reduction device to move.

[0031] The adjustable leg 7 includes a support plate 8 fixedly connected to the surface of the base 1; a fixing block 9 is fixedly connected to the upper side of the support plate 8; an adjusting rod 10 is connected to the inside of the fixing block 9 by a thread, and the adjusting rod 10 passes through the support plate 8; the upper end of the adjusting rod 10 is fixedly connected to the adjusting block 11; a group of levers 12 are evenly distributed on the surface of the adjusting block 11; the lower end of the adjusting rod 10 is rotatably connected to the support 13; when the noise reduction device needs to be fixed, the lever 12 is used to rotate the adjusting rod 10 forward, and due to the threaded fit between the adjusting rod 10 and the fixing block 9, the adjusting rod 10 and the support 1 3 moves downward relative to the base 1, and after the support 13 contacts the ground, the adjusting rod 10 and the support 13 rotate relative to each other, and then the adjusting rod 10 supports the base 1 upward through the support 13, so that the universal wheel 6 leaves the ground. When the noise reduction device needs to be moved, the adjusting rod 10 is reversed by the lever 12, and then the adjusting rod 10 and the support 13 move upward relative to the base 1, and then the universal wheel 6 contacts the ground and the support 13 leaves the ground. Therefore, when using the device, there is no need to use lifting equipment to first lift the base 1 and then adjust the adjustable leg 7, which simplifies the operation steps and is convenient and quick.

[0032] Example 2:

[0033] like Figures 5 and 6 As shown, compared with Example 1, another embodiment of the present invention is: a circular groove 14 is opened inside the support 13; a disc 15 is rotatably connected inside the circular groove 14, and the disc 15 and the circular groove 14 are clearance-matched; the adjusting rod 10 is fixedly connected to the disc 15, and the adjusting rod 10 is rotatably connected to the support 13 through the disc 15; a group of grooves are evenly distributed on the surface of the disc 15; balls 16 are arranged between the grooves and the side walls of the circular groove 14; lubricating oil is added to the circular groove 14; in the process of adjusting the adjustable support leg 7, since the entire weight of the device is applied to the support 13 through the adjusting rod 10, the friction between the adjusting rod 10 and the support 13 needs to be reduced as much as possible, otherwise it will be difficult to adjust. By arranging the balls 16 and lubricating oil, the friction resistance between the disc 15 and the support 13 can be effectively reduced, the rotation efficiency of the adjusting rod 10 can be improved, and the problem of difficulty in adjustment due to excessive friction can be prevented.

[0034] A collecting groove 17 is provided at the bottom of the circular groove 14; the bottom of the circular groove 14 is inclined from the edge toward the collecting groove 17; after long-term use, the friction between the disc 15, the circular groove 14, and the ball 16 will produce metal chips due to wear, or other impurities will enter the circular groove 14, and over time, sludge will form in the circular groove 14, hindering the normal rotation of the disc 15. By providing the collecting groove 17, the sludge can settle downward under the action of its own weight and enter the collecting groove 17 along the inclined surface of the bottom for collection, thereby preventing the sludge from contacting the ball 16 and the disc 15 and improving the rotation efficiency.

[0035] An oil guide rope 18 is fixedly connected to the inside of the support 13, and the oil guide rope 18 is made of water-absorbing material; the upper end of the oil guide rope 18 extends above the circular groove 14, and the lower end extends to the bottom of the collecting tank 17; a slider 19 is slidably connected to the top of the support 13, and the slider 19 is located above the upper end of the oil guide rope 18; the end of the slider 19 protruding from the surface of the support 13 is fixedly connected to a pressure plate 20; a spring 21 is fixedly connected between the pressure plate 20 and the support 13; a guide hole 22 is opened between the upper end of the oil guide rope 18 and the circular groove 14; the lubricating oil will also enter the collecting tank Inside the collecting groove 17, the lower end of the oil guide rope 18 absorbs the lubricating oil, and then the lubricating oil is transmitted to the upper end along the oil guide rope 18. During the adjustment process, the adjusting rod 10 drives the support 13 to move upward, and the pressure plate 20 is squeezed by the support plate 8, and then the slider 19 slides toward the inside of the support 13 and squeezes the oil guide rope 18, squeezing the lubricating oil inside the upper end of the oil guide rope 18. The extruded lubricating oil flows into the top of the circular groove 14 through the guide hole 22, thereby being able to redirect the lubricating oil at the bottom of the circular groove 14 to the top, preventing the lubricating oil from continuously depositing downward, resulting in a lack of lubricating oil at the top.

[0036] A funnel-shaped filter screen 23 is fixedly connected to the inside of the collecting tank 17, and the filter screen 23 is located above the lower end of the oil guide rope 18; by setting the filter screen 23, the oil sludge can be filtered and isolated on the upper side of the filter screen 23, so as to prevent the oil sludge from entering the inside of the oil guide rope 18 and clogging the oil guide rope 18 when the lower end of the oil guide rope 18 absorbs lubricating oil. Setting the filter screen 23 to a funnel shape can increase the filtering area and improve the filtering efficiency.

[0037] An elastic block 1 24 is fixedly connected to the upper side of one of the pressure plates 20; an elastic block 25 is fixedly connected to the upper side of the bottom of the filter 23; both the elastic block 1 24 and the elastic block 2 25 are hollow structures and filled with air; the elastic block 1 24 and the elastic block 2 25 are connected by a conduit; the upper end of the elastic block 25 is fixedly connected to a movable piece 26; when the support plate 8 squeezes the pressure plate 20, the elastic block 1 24 is also squeezed, and then the air in the elastic block 1 24 is filled into the elastic block 2 25 through the conduit, causing the elastic block 2 25 to expand and elongate, driving the movable piece 26 to move upward, generating an upward liquid flow, thereby lifting the oil sludge on the upper side of the filter 23 upward, preventing the oil sludge from filling the holes of the filter 23 densely, thereby causing the oil passing efficiency of the filter 23 to decrease, so that the lubricating oil can fully pass through the filter 23 to reach the bottom of the collection tank 17.

[0038] A group of through holes 27 are evenly distributed on the surface of the movable sheet 26; by providing the through holes 27, the sludge can pass through the through holes 27 to reach the bottom of the movable sheet 26, preventing the movable sheet 26 from completely blocking the bottom of the filter screen 23, thereby reducing the filtering area of ​​the filter screen 23.

[0039] A limiting tube 28 is sleeved on the outside of the elastic block 25, and the limiting tube 28 is fixedly connected to the filter 23; by providing the limiting tube 28, when the elastic block 25 is inflated, the limiting tube 28 can limit the lateral expansion of the elastic block 25, thereby allowing the elastic block 25 to fully expand along the length direction, increasing the movement amplitude of the movable piece 26, and improving the efficiency of lifting the oil sludge.

[0040] Working principle: The fixed plate 2 is tilted by multiple steel wire ropes 4 to improve the stability of the noise reduction device and improve its wind resistance. By adjusting the angle of a pair of movable plates 3, a concave surface is formed between the fixed plate 2 and the movable plate 3 (the construction position is on one side of the concave surface), thereby accurately and directional noise reduction is performed on the construction position, improving the convergence effect on noise and reducing the impact of noise on surrounding residential areas. By setting universal wheels 6, it is convenient to manually push the noise reduction device to the predetermined position, thereby improving the transfer efficiency. After reaching the predetermined position, the adjustable legs 7 are adjusted to make the universal wheels 6 leave the ground, thereby improving the stability of the base 1, and then it can be fixed by the steel wire ropes 4. When it needs to be transferred again later, the steel wire ropes 4 are removed, and the adjustable legs 7 are adjusted to make the universal wheels 6 contact the ground. , the noise reduction device can be pushed to move; when the noise reduction device needs to be fixed, the adjusting rod 10 is rotated forward by the lever 12. Due to the threaded fit between the adjusting rod 10 and the fixing block 9, the adjusting rod 10 and the support 13 move downward relative to the base 1. After the support 13 contacts the ground, the adjusting rod 10 and the support 13 rotate relatively. Then, the adjusting rod 10 supports the base 1 upward through the support 13, so that the universal wheel 6 leaves the ground. When the noise reduction device needs to be moved, the adjusting rod 10 is reversed by the lever 12. The adjusting rod 10 and the support 13 move upward relative to the base 1. After that, the universal wheel 6 contacts the ground and the support 13 leaves the ground. Therefore, during the use of the device, there is no need to use lifting equipment to first lift the base 1 and then adjust the adjustable legs 7. The operation steps are simplified, which is convenient and quick. In the process of adjusting the adjustable support leg 7, since the entire weight of the device acts on the support 13 through the adjusting rod 10, the friction between the adjusting rod 10 and the support 13 needs to be reduced as much as possible, otherwise it will be difficult to adjust. By providing the ball 16 and lubricating oil, the friction resistance between the disc 15 and the support 13 can be effectively reduced, the rotation efficiency of the adjusting rod 10 can be improved, and the problem of difficulty in adjustment due to excessive friction can be prevented. After long-term use, the friction between the disc 15, the circular groove 14, and the ball 16 will produce metal chips due to wear, or other impurities will enter the circular groove 14. Over time, sludge will form in the circular groove 14, which will hinder the normal rotation of the disc 15. By providing the collecting groove 17, the sludge can be collected in the collecting groove 17. The oil will then flow into the collecting tank 17 and into the top of the circular groove 14 to prevent the oil from flowing into the collecting tank 17 and into the top of the circular groove 14.By setting the filter screen 23, the oil sludge can be filtered and isolated on the upper side of the filter screen 23 to prevent the oil sludge from entering the oil guide rope 18 and clogging the oil guide rope 18 when the lower end of the oil guide rope 18 absorbs the lubricating oil. Setting the filter screen 23 in a funnel shape can increase the filtering area and improve the filtering efficiency. When the support plate 8 squeezes the pressure plate 20, the elastic block 1 24 is also squeezed, and then the air in the elastic block 1 24 is filled into the elastic block 2 25 through the conduit, causing the elastic block 25 to expand and extend, driving the movable sheet 26 to move upward, generating an upward liquid flow, thereby lifting the oil sludge on the upper side of the filter screen 23 upward, preventing the oil sludge from blocking the filter screen 2 3 are densely filled, thereby reducing the oil flow efficiency of the filter 23. This allows the lubricating oil to fully penetrate the filter 23 and reach the bottom of the collection tank 17. By providing a through hole 27, the sludge can pass through the through hole 27 and reach the bottom of the movable plate 26, preventing the movable plate 26 from completely blocking the bottom of the filter 23 and reducing the filtering area of ​​the filter 23. By providing a limit tube 28, when the elastic block 25 is inflated, the limit tube 28 can limit the lateral expansion of the elastic block 25, thereby allowing the elastic block 25 to fully expand along the length direction, increasing the movement range of the movable plate 26 and improving the efficiency of the sludge lifting.

[0041] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

[0043] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A movable directional noise reduction device, characterized by: It includes a base; a set of mutually spliced ​​fixed plates are fixedly connected to the upper side of the base; a pair of movable plates are rotatably connected to the two sides of the fixed plates through hinges; the fixed plates and movable plates are both made of square steel and rock wool sandwich panels; a set of steel wire ropes are arranged on both sides of the fixed plates; the steel wire ropes are fixed to the ground through expansion screw hooks; A set of universal wheels and adjustable legs are evenly distributed on the lower side of the base; The adjustable leg includes a support plate fixedly connected to the surface of the base; a fixed block is fixedly connected to the upper side of the support plate; an adjustment rod is connected to the interior of the fixed block by a thread, and the adjustment rod passes through the support plate; the upper end of the adjustment rod is fixedly connected to the adjustment block; a group of levers are evenly distributed on the surface of the adjustment block; the lower end of the adjustment rod is rotatably connected to the support; The support has a circular groove inside; a circular disc is rotatably connected to the circular groove, and the circular disc and the circular groove are in a clearance fit; the adjusting rod is fixedly connected to the circular disc, and the adjusting rod is rotatably connected to the support through the circular disc; a group of grooves are distributed on the surface of the circular disc; balls are provided between the grooves and the side walls of the circular groove; and lubricating oil is added to the interior of the circular groove; A collecting groove is provided at the bottom of the circular groove; the bottom of the circular groove is inclined from the edge toward the collecting groove; An oil guide rope is fixedly connected to the inside of the support, and the oil guide rope is made of water-absorbing material; the upper end of the oil guide rope extends to above the circular groove, and the lower end extends to the bottom of the collection tank; a slider is slidably connected to the top of the support, and the slider is located above the upper end of the oil guide rope; the end of the slider protruding from the surface of the support is fixedly connected to a pressure plate; a spring is fixedly connected between the pressure plate and the support; a guide hole is opened between the upper end of the oil guide rope and the circular groove.

2. The movable directional noise reduction device according to claim 1, characterized in that: A funnel-shaped filter screen is fixedly connected to the interior of the collection tank, and the filter screen is located above the lower end of the oil guide rope.

3. The movable directional noise reduction device according to claim 2, characterized in that: An elastic block 1 is fixedly connected to the upper side of one of the pressure plates; an elastic block 2 is fixedly connected to the upper side of the bottom of the filter; both the elastic block 1 and the elastic block 2 are hollow structures and filled with air; the elastic block 1 and the elastic block 2 are connected by a conduit; a movable sheet is fixedly connected to the upper end of the elastic block 2.

4. The movable directional noise reduction device according to claim 3, characterized in that: A group of through holes are evenly distributed on the surface of the movable sheet.

5. The movable directional noise reduction device according to claim 4, characterized in that: The outer sides of the two elastic blocks are sleeved with limiting tubes, and the limiting tubes are fixedly connected to the filter screen.

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