阅读说明：本技术 一种具有降噪机构的液压泵 (Hydraulic pump with noise reduction mechanism ) 是由 阎凯 钟学平 于 2020-06-29 设计创作，主要内容包括：本发明涉及液压泵技术领域,尤其为一种具有降噪机构的液压泵,包括液压泵主体,所述液压泵主体的内侧固定连接有传动轴,所述液压泵主体的顶端连通有降噪机构,所述降噪机构包括进液管、隔音板、第一隔网板、第二隔网板、第三隔网板第一缓冲垫、第二缓冲垫和高压软管,本发明中,通过设置的隔音板、隔音框、第一隔网板、第二隔网板、第三隔网板、第一缓冲垫和第二缓冲垫,降低了带有气泡的液体进入液压泵主体的高压腔时,气泡被击破,形成局部的高频压力冲击而引起噪声,从而降低了整体的噪声,同时通过弹簧、第一缓冲垫以及第二缓冲垫可以对过渡壳产生的震动进行减缓消除,减少过渡壳与液压泵主体之间发生震动产出的噪声,也起到降噪的作用。(The invention relates to the technical field of hydraulic pumps, in particular to a hydraulic pump with a noise reduction mechanism, which comprises a hydraulic pump main body, wherein a transmission shaft is fixedly connected to the inner side of the hydraulic pump main body, the top end of the hydraulic pump main body is communicated with the noise reduction mechanism, the noise reduction mechanism comprises a liquid inlet pipe, a sound insulation plate, a first screen plate, a second screen plate, a third screen plate, a first buffer pad, a second buffer pad and a high-pressure hose, and in the invention, bubbles are broken when liquid with bubbles enters a high-pressure cavity of the hydraulic pump main body through the arranged sound insulation plate, the sound insulation frame, the first screen plate, the second screen plate, the third screen plate, the first buffer pad and the second buffer pad, so that the noise caused by local high-frequency pressure impact is reduced, and meanwhile, the vibration generated by a transition shell can be reduced and eliminated through a spring, the first buffer pad and the second buffer pad, reduce the noise of taking place vibrations output between transition shell and the hydraulic pump main part, also play the effect of making an uproar of falling.)

1. A hydraulic pump with a noise reduction mechanism, comprising a hydraulic pump main body (1), characterized in that: inboard fixedly connected with transmission shaft (2) of hydraulic pump main part (1), keyway (7) have been seted up to the inboard of transmission shaft (2), inboard fixedly connected with adjustment mechanism (6) of keyway (7), the top intercommunication of hydraulic pump main part (1) has noise reduction mechanism (5), the bottom fixedly connected with mount pad (3) of hydraulic pump main part (1), the bottom fixedly connected with supporting mechanism (4) of hydraulic pump main part (1), noise reduction mechanism (5) are including feed liquor pipe (501), acoustic celotex board (502), sealing ring (503), apron (504), give sound insulation frame (505), first separate otter board (506), second separate otter board (507), third separate otter board (508), transition shell (509), vertical axle (510), connect shell (511), spring (512), first blotter (513), second screw (514), Second blotter (515) and high-pressure hose (516), the inboard threaded connection in top of hydraulic pump main part (1) has second screw (514), the outside threaded connection of second screw (514) connects shell (511), first blotter (513) and second blotter (515), and first blotter (513) and second blotter (515) all with connect shell (511) fixed connection, the inboard fixedly connected with spring (512) in bottom of connecting shell (511), the top fixedly connected with vertical axle (510) of spring (512).

2. A hydraulic pump having a noise reducing mechanism as set forth in claim 1, wherein: the first buffer pad (513) and the second buffer pad (515) are both made of rubber pads made of rubber materials.

3. A hydraulic pump having a noise reducing mechanism as set forth in claim 1, wherein: the top fixedly connected with of vertical axle (510) passes through shell (509), the outside fixedly connected with sound-proof frame (505) of passing through shell (509), the inboard fixedly connected with sealing ring (503) in top of passing through shell (509), the top screwed connection of passing through shell (509) has apron (504), the outside fixedly connected with acoustic celotex board (502) of apron (504), the inboard intercommunication in top of apron (504) has feed liquor pipe (501).

4. A hydraulic pump having a noise reducing mechanism as set forth in claim 3, wherein: the inboard fixedly connected with of transition shell (509) separates otter board (506), second and third and separates otter board (507) and (508), and the mesh has all been seted up to the inboard that first separates otter board (506), second and third separate otter board (507), and first separates otter board (506), second and separate the mesh aperture on otter board (507) and third and separate otter board (508) and reduce in proper order.

5. A hydraulic pump having a noise reducing mechanism as set forth in claim 1, wherein: supporting mechanism (4) are including adjusting seat (401), screw (402), pivot (403), connecting hole (404), commentaries on classics board (405), sleeve (406), spacing ring (407), a removal section of thick bamboo (408), a screw thread section of thick bamboo (409) and supporting seat (410), the bottom fixedly connected with of hydraulic pump main part (1) adjusts seat (401), the inboard fixedly connected with pivot (403) of adjusting seat (401), the outside of pivot (403) is rotated and is connected with commentaries on classics board (405), connecting hole (404) have been seted up to the inboard of commentaries on classics board (405), and connecting hole (404) inboard screw connection that is located the upside has first screw (402), the fixed orifices has been seted up to the inboard of adjusting seat (401), and the fixed orifices is corresponding with the position of connecting hole (404).

6. The hydraulic pump having a noise reducing mechanism of claim 5, wherein: the outer side of the rotating plate (405) is fixedly connected with a limiting ring (407), the outer side of the limiting ring (407) is rotatably connected with a sleeve (406), the bottom end of the sleeve (406) is fixedly connected with a threaded cylinder (409), the outer side of the rotating plate (405) is slidably connected with a moving cylinder (408), the outer side of the moving cylinder (408) is provided with threads, the moving cylinder (408) is spirally connected with the threaded cylinder (409) through the threads, and the bottom end of the moving cylinder (408) is fixedly connected with a supporting seat (410).

7. A hydraulic pump having a noise reducing mechanism as set forth in claim 1, wherein: adjustment mechanism (6) include slider (601), adjusting screw (602), regulating plate (603), movable plate (604) and carriage release lever (605), the inboard rotation of keyway (7) is connected with adjusting screw (602), the outside screwed connection of adjusting screw (602) has slider (601) and transmission shaft (2) sliding connection, the inboard sliding connection in top of slider (601) has movable plate (604), the carriage release lever (605) of the vertical setting of top fixedly connected with of movable plate (604), the top fixedly connected with regulating plate (603) of carriage release lever (605), and regulating plate (603) and transmission shaft (2) sliding connection.

Technical Field

The invention relates to the technical field of hydraulic pumps, in particular to a hydraulic pump with a noise reduction mechanism.

Background

The hydraulic pump is a power element of a hydraulic system, is driven by an engine or a motor, sucks oil from a hydraulic oil tank, discharges pressure oil, and sends the pressure oil to an execution element, and is divided into a gear pump, a plunger pump, a vane pump and a screw pump according to the structure.

When the pressure in the pumping oil cavity is less than the air separation pressure at the oil liquid temperature, the air dissolved in the oil liquid is separated out and becomes bubbles, when the oil liquid with the bubbles enters the high-pressure cavity, the bubbles are broken to form local high-frequency pressure impact, thereby causing noise, the radial depth of a key groove on a general hydraulic pump transmission shaft can not be adjusted, the hydraulic pump can not be suitable for connecting keys with different sizes, and if the hydraulic pump meets a supporting surface with a fall in the installation process, the supporting legs can not be adjusted, and the use of workers can not be met, therefore, the hydraulic pump with the noise reduction mechanism is provided aiming at the problems.

Disclosure of Invention

The present invention is directed to a hydraulic pump having a noise reduction mechanism to solve the problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme:

a hydraulic pump with a noise reduction mechanism comprises a hydraulic pump main body, wherein a transmission shaft is fixedly connected to the inner side of the hydraulic pump main body, a key groove is formed in the inner side of the transmission shaft, an adjusting mechanism is fixedly connected to the inner side of the key groove, the top end of the hydraulic pump main body is communicated with the noise reduction mechanism, a mounting seat is fixedly connected to the bottom end of the hydraulic pump main body, a supporting mechanism is fixedly connected to the bottom end of the hydraulic pump main body, the noise reduction mechanism comprises a liquid inlet pipe, a sound insulation plate, a sealing ring, a cover plate, a sound insulation frame, a first sound insulation plate, a second sound insulation plate, a third sound insulation plate, a transition shell, a vertical shaft, a connecting shell, a spring, a first cushion, a second cushion and a high-pressure hose, a second screw is spirally connected to the inner side of the top end of the hydraulic, and first blotter and second blotter all with connect shell fixed connection, the inboard fixedly connected with spring in bottom of connecting the shell, the top fixedly connected with vertical axle of spring.

Preferably, the first cushion pad and the second cushion pad are both made of rubber pads made of rubber materials.

Preferably, the top fixedly connected with transition shell of vertical axle, the outside fixedly connected with sound insulation frame of transition shell, the inboard fixedly connected with sealing ring in top of transition shell, the top screwed connection of transition shell has the apron, the outside fixedly connected with acoustic celotex board of apron, the inboard intercommunication in top of apron has the feed liquor pipe.

Preferably, the inner side of the transition shell is fixedly connected with a first screen separating plate, a second screen separating plate and a third screen separating plate, the inner sides of the first screen separating plate, the second screen separating plate and the third screen separating plate are all provided with meshes, and the aperture of the meshes on the first screen separating plate, the second screen separating plate and the third screen separating plate is reduced in sequence.

Preferably, the supporting mechanism is including adjusting seat, screw, pivot, connecting hole, commentaries on classics board, sleeve, spacing ring, a removal section of thick bamboo, a screw thread section of thick bamboo and supporting seat, the seat is adjusted to the bottom fixedly connected with of hydraulic pump main part, the inboard fixedly connected with pivot of adjusting the seat, the outside of pivot is rotated and is connected with the commentaries on classics board, the connecting hole has been seted up to the inboard of commentaries on classics board, and the inboard screwed connection of connecting hole that is located the upside has first screw, the fixed orifices has been seted up to the inboard of adjusting the seat, and the fixed orifices is corresponding with.

Preferably, the outside fixedly connected with spacing ring of commentaries on classics board, the outside of spacing ring is rotated and is connected with the sleeve, telescopic bottom fixedly connected with screw thread section of thick bamboo, the outside sliding connection of commentaries on classics board has a removal section of thick bamboo, the outside of a removal section of thick bamboo is provided with the screw thread, and removes a section of thick bamboo and pass through screw thread and screw thread section of thick bamboo screwed connection, the bottom fixedly connected with supporting seat of a removal section of thick bamboo.

Preferably, adjustment mechanism includes slider, adjusting screw, regulating plate, movable plate and carriage release lever, the inboard rotation of keyway is connected with adjusting screw, adjusting screw's outside spiral connection has slider and transmission shaft sliding connection, the inboard sliding connection in top of slider has the movable plate, the carriage release lever of the vertical setting of top fixedly connected with of movable plate, the top fixedly connected with regulating plate of carriage release lever, and regulating plate and transmission shaft sliding connection.

Compared with the prior art, the invention has the beneficial effects that:

1. in the invention, through the arranged sound insulation board, the sealing ring, the sound insulation frame, the first screen board, the second screen board, the third screen board, the transition shell, the connecting shell, the spring, the first buffer pad, the second buffer pad and the high-pressure hose, when the liquid containing bubbles passes through the first screen board, the second screen board and the third screen board, the bubbles can be broken by meshes on the first screen board, the second screen board and the third screen board, and because the meshes on the first screen board, the second screen board and the third screen board are gradually reduced, the bubbles with different diameters can be broken in batches, so that the noise generated when the bubbles are broken can not be sent out in a centralized way, meanwhile, the noise sent by the bubbles can not be all transmitted to the outside through the sound insulation board and the sound insulation frame, and the bubbles in the liquid entering the inner side of the hydraulic pump main body can be reduced, and the liquid with bubbles can not enter the high-pressure cavity of the hydraulic pump main body, the bubble is broken, forms local high frequency pressure and strikes and arouse the noise to reduce holistic noise, can slow down the elimination through spring, first blotter and second blotter to the vibrations that the transition shell produced simultaneously, reduce the noise that takes place vibrations output between transition shell and the hydraulic pump main part, also play the effect of making an uproar of falling.

2. According to the invention, through the arrangement of the sliding block, the adjusting screw, the adjusting plate, the moving rod and the key groove, a worker can adjust the radial depth of the key groove according to the height of the external connecting key, so that the external connecting keys with different heights can be met, and the applicability of the invention is improved.

3. According to the hydraulic pump, through the arrangement of the adjusting seat, the screws, the connecting holes, the rotating plate, the sleeve, the limiting ring, the moving cylinder, the threaded cylinder and the supporting seat, when the supporting seat has installation height difference with the installation seat, workers can adjust the position of the supporting seat through the rotating sleeve to enable the supporting seat and the installation seat to be on the same horizontal plane, further support of the hydraulic pump main body is achieved through the supporting seat, when the supporting seat is required to be fixed with an external connecting plate perpendicular to the horizontal plane, the workers can adjust the position of the supporting seat, and the supporting seat and the external connecting plate are fixed together, so that different use requirements are met.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1 at point A according to the present invention;

FIG. 3 is a schematic view of the internal mounting structure of the sleeve of the present invention;

FIG. 4 is a schematic view of the internal mounting structure of the soundproof frame according to the present invention;

FIG. 5 is a schematic view of the internal structure of the propeller shaft of the present invention;

FIG. 6 is a schematic perspective view of a slider according to the present invention;

FIG. 7 is a schematic diagram of a first partition plate structure according to the present invention.

In the figure: 1-hydraulic pump body, 2-transmission shaft, 3-mounting seat, 4-supporting mechanism, 401-adjusting seat, 402-first screw, 403-rotating shaft, 404-connecting hole, 405-rotating plate, 406-sleeve, 407-limiting ring, 408-moving cylinder, 409-threaded cylinder, 410-supporting seat, 5-noise reduction mechanism, 501-liquid inlet pipe, 502-noise insulation plate, 503-sealing ring, 504-cover plate, 505-sound insulation frame, 506-first screen plate, 507-second screen plate, 508-third screen plate, 509-transition shell, 510-vertical shaft, 511-connecting shell, 512-spring, 513-first cushion pad, 514-second screw, 515-second cushion pad, 516-high-pressure hose, 6-adjusting mechanism, 601-sliding block, 602-adjusting screw, 603-adjusting plate, 604-moving plate, 605-moving rod and 7-key groove.

Detailed Description