Low-noise rotary hydraulic motor

Abstract

The utility model relates to a low noise rotary hydraulic motor, the left end of the hydraulic motor body is provided with a circular cavity, the inner wall of the circular cavity is provided with a chute I. A noise reduction device comprises a protection assembly which is arranged at the left end of the circular cavity and is used for protecting the circular cavity. A second noise reduction assembly used for conducting noise reduction on the hydraulic motor body is arranged in the circular cavity, a noise reduction cotton cushion is arranged on the left side of the second noise reduction assembly, and a first noise reduction assembly used for conducting noise reduction on the hydraulic motor body is arranged in the protection assembly. Two second sliding blocks on the outer wall of a second noise reduction cotton sleeve can move in a circular cavity along a first sliding groove, then a first sliding block on the outer wall of a first noise reduction cotton sleeve moves towards the interior of a protective cover along a second sliding groove, and then a noise reduction cotton cushion is placed between the first noise reduction cotton sleeve and the second noise reduction cotton sleeve. And finally, six bolts penetrate through six circular holes and are in threaded connection with six threaded holes, so that the protective cover can fix the circular cavity, and noise reduction treatment can be performed on the hydraulic motor body.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic motor technology, and in particular to a low-noise rotary hydraulic motor. Background Technology

[0002] Hydraulic motors are commonly used actuators in hydraulic systems, converting the fluid pressure energy provided by a hydraulic pump into the mechanical energy of its output shaft. However, existing hydraulic motors tend to generate noise during operation. For example, in the cycloidal hydraulic motor described in Chinese patent application CN202021443777.2, the flow distribution structure and the rotor-stator pair enclose multiple rotor-stator cavities. The valve body has an inlet groove and an outlet groove. The rotor-stator pair has a first annular cavity connected to the inlet groove via the flow distribution structure and a second annular cavity connected to the outlet groove. The flow distribution structure has multiple flow distribution channels, which are connected to the rotor-stator cavities, the first annular cavity, or the second annular cavity. The flow distribution channels are also connected to a flow distribution valve, which controls the opening and closing of at least some of the flow distribution channels to adjust the speed of the cycloidal hydraulic motor.

[0003] However, when using a hydraulic motor to provide liquid pressure to a hydraulic pump, the lack of a noise reduction device for the hydraulic motor results in noise being generated during operation, which can affect the operator's hearing. In more serious cases, it can even cause hearing loss in the operator. Utility Model Content

[0004] To address the issue raised in the background section that the lack of a noise reduction device for hydraulic motors leads to noise generation during operation, which can affect the operator's hearing and, in severe cases, cause hearing loss, this invention provides the following technical solution:

[0005] A low-noise rotary hydraulic motor includes a hydraulic motor body, and a noise reduction device for reducing noise in the hydraulic motor body is provided at the left end of the hydraulic motor body.

[0006] The hydraulic motor body has a circular cavity at its left end, and there are two sliding grooves on the inner wall of the cavity. The two sliding grooves are symmetrically distributed on the inner wall of the cavity.

[0007] The noise reduction device includes a protective component disposed at the left end of the circular cavity for protecting the circular cavity, a second noise reduction component disposed inside the circular cavity for reducing noise on the hydraulic motor body, a noise reduction cotton pad disposed on the left side of the second noise reduction component, and a first noise reduction component disposed inside the protective component for reducing noise on the hydraulic motor body.

[0008] Furthermore, the protective assembly includes a protective cover disposed at the left end of the circular cavity for protecting the circular cavity. The inner wall of the protective cover is provided with a second sliding groove for installing the noise reduction component, and there are two second sliding grooves. The cover body of the protective cover is provided with six bolts for locking the protective cover to the left end of the hydraulic motor body.

[0009] Furthermore, the noise reduction component one includes a noise reduction cotton cover one disposed inside the protective cover for noise reduction of the protective cover, a slider one for inserting into the slide groove two is fixedly installed on the cover body of the noise reduction cotton cover one, and a noise reduction strip one is fixedly installed on the inner wall of the noise reduction cotton cover one, and there are several noise reduction strips one.

[0010] Furthermore, the noise reduction component two includes a noise reduction cotton sleeve two disposed in the circular cavity, and two sliders two for sliding in the slide groove two are fixedly installed on the outer wall of the noise reduction cotton sleeve two. A number of noise reduction strips two are fixedly installed on the inner wall of the noise reduction cotton sleeve two.

[0011] Furthermore, the left end of the hydraulic motor body is provided with threaded holes for threaded connection with bolts, and there are six threaded holes, which are distributed in a circumferential array on the left end of the hydraulic motor body.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] By setting up a hydraulic motor body and a noise reduction device, when noise reduction treatment of the hydraulic motor body is required, the two sliders on the outer wall of the noise reduction cotton sleeve can be moved along the slide groove into the circular cavity, and then the slider on the outer wall of the noise reduction cotton sleeve can be moved along the slide groove into the protective cover. Then, the noise reduction cotton pad is placed between the noise reduction cotton sleeve and the noise reduction cotton sleeve. Finally, the protective cover can be fixed to the circular cavity by six bolts passing through the six circular holes and connecting with the threads between the six threaded holes. Thus, the noise reduction effect of the hydraulic motor body can be achieved. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the hydraulic motor body of this utility model;

[0016] Figure 3 This is a front sectional view of the hydraulic motor body of this utility model;

[0017] Figure 4 This is a schematic diagram of the protective component structure of this utility model;

[0018] Figure 5 This is a schematic diagram of the noise reduction component of this utility model;

[0019] Figure 6 This is a schematic diagram of the second noise reduction component of this utility model.

[0020] The following is a list of component names represented by the various reference numerals in the attached figures:

[0021] 100-Hydraulic motor body, 101-Slide groove one, 102-Threaded hole, 103-Circular cavity;

[0022] 200-Noise reduction device, 210-Protective component, 211-Protective cover, 212-Slide groove two, 213-Bolt, 220-Noise reduction component one, 221-Noise reduction cotton cover one, 222-Slider one, 223-Noise reduction strip one, 230-Noise reduction component two, 231-Noise reduction cotton cover two, 232-Slider two, 233-Noise reduction strip two, 240-Noise reduction cotton pad. Detailed Implementation

[0023] The preferred embodiments of this utility model are described in detail below, and a clear and complete explanation is given in conjunction with the accompanying drawings.

[0024] Please see Figures 1-6 This utility model provides a low-noise rotary hydraulic motor.

[0025] It includes a hydraulic motor body 100, and a noise reduction device 200 for reducing noise in the hydraulic motor body 100 is provided at the left end of the hydraulic motor body 100.

[0026] A circular cavity 103 is provided at the left end of the hydraulic motor body 100 to facilitate the rotation of the rotating mechanism in the hydraulic motor body 100. A sliding groove 101 is provided on the inner wall of the circular cavity 103. There are two sliding grooves 101, which are symmetrically distributed on the inner wall of the circular cavity 103. The cross-section of the sliding groove 101 is T-shaped.

[0027] The left end of the hydraulic motor body 100 is provided with a threaded hole 102 for threaded connection with the bolt 213, and there are six threaded holes 102, which are arranged in a circumferential array on the left end of the hydraulic motor body 100.

[0028] The noise reduction device 200 includes a protective component 210 disposed at the left end of the circular cavity 103 for protecting the circular cavity 103, a second noise reduction component 230 disposed inside the circular cavity 103 for reducing noise in the hydraulic motor body 100, a noise reduction cotton pad 240 disposed on the left side of the second noise reduction component 230, and a first noise reduction component 220 disposed inside the protective component 210 for reducing noise in the hydraulic motor body 100.

[0029] The protective component 210 includes a protective cover 211 disposed at the left end of the circular cavity 103 for protecting the circular cavity 103. The left end of the protective cover 211 has six circular holes arranged in a circumferential array through the cover of the protective cover 211. The central axis of the six circular holes is aligned with the central axis of the six threaded holes 102. The inner wall of the protective cover 211 has two sliding grooves 212 for installing the noise reduction component 220. The two sliding grooves 212 are symmetrically distributed on the inner wall of the protective cover 211. The cross-section of the sliding groove 212 is T-shaped.

[0030] The protective cover 211 is provided with bolts 213 for locking the protective cover 211 to the left end of the hydraulic motor body 100. There are six bolts 213, which are arranged in a circumferential array, pass through six circular holes and are threadedly connected to the six threaded holes 102, so that the protective cover 211 can be fixed to the left end of the hydraulic motor body 100.

[0031] The noise reduction component 220 includes a noise reduction cotton cover 221 disposed inside the protective cover 211 for noise reduction of the protective cover 211. The noise reduction cotton cover 221 is made of sound-absorbing cotton so that the noise generated by the rotating mechanism of the hydraulic motor body 100 can be absorbed by the noise reduction cotton cover 221, thereby reducing the noise generated by the rotation of the hydraulic motor body 100.

[0032] The cover of the noise-reducing cotton cover 221 is fixedly equipped with a slider 222 for insertion into the slide groove 212. The slider 222 is symmetrically welded to the outer wall of the noise-reducing cotton cover 221. The cross-section of the slider 222 is the same as the cross-section of the slide groove 212 to facilitate the movement of the slider 222 along the slide groove 212 into the protective cover 211, so that the noise-reducing cotton cover 221 can be installed into the circular cavity 103. The inner wall of the noise-reducing cotton cover 221 is fixedly equipped with a noise-reducing strip 223. There are several noise-reducing strips 223, which are welded in a circumferential array on the inner wall of the noise-reducing cotton cover 221. The noise-reducing strips 223 are also made of sound-absorbing cotton, which can further enhance the noise absorption of the hydraulic motor body 100 by the protective cover 211.

[0033] Noise reduction component 230 includes a noise reduction cotton sleeve 231 disposed within the circular cavity 103. The noise reduction cotton sleeve 231 is made of sound-absorbing cotton to absorb the noise generated by the rotating mechanism of the hydraulic motor body 100, thereby reducing the noise generated by the rotation of the hydraulic motor body 100. Two sliders 232 are fixedly installed on the outer wall of the noise reduction cotton sleeve 231 for sliding within the slide groove 101. The two sliders 232 are symmetrically distributed front and back on the outer wall of the noise reduction cotton sleeve 231. Several noise reduction strips 233 are fixedly installed on the inner wall of the noise reduction cotton sleeve 231. These several noise reduction strips 233 are welded in a circumferential array onto the inner wall of the noise reduction cotton sleeve 231. The second 233 is also made of sound-absorbing cotton, which can further enhance the noise absorption of the hydraulic motor body 100 by the protective cover 211. Therefore, when noise reduction treatment of the hydraulic motor body 100 is required, the two sliders 232 on the outer wall of the noise-reducing cotton sleeve 231 can be moved along the first groove 101 into the circular cavity 103, and the sliders 222 on the outer wall of the noise-reducing cotton sleeve 221 can be moved along the second groove 212 into the protective cover 211. Then, the noise-reducing cotton pad 240 is placed between the noise-reducing cotton sleeve 221 and the noise-reducing cotton sleeve 231. Finally, the protective cover 211 can be fixed to the circular cavity 103 by the six bolts 212 passing through the six circular holes and connecting with the threads between the six threaded holes 102. Thus, noise reduction treatment of the hydraulic motor body 100 can be achieved.

[0034] Based on the above description and accompanying drawings, those skilled in the art can understand and implement this utility model. Furthermore, any non-creative modifications made to this utility model by those skilled in the art without inventive effort are still within the protection scope of this utility model.

Claims

1. A low noise rotary hydraulic motor characterized by: Including hydraulic motor body (100), the left end of hydraulic motor body (100) is provided with noise reduction device (200) for reducing noise of hydraulic motor body (100); The left end of the hydraulic motor body (100) is provided with a circular cavity (103), and a sliding groove (101) is formed in the inner wall of the circular cavity (103), and the two sliding grooves (101) are symmetrically distributed on the inner wall of the circular cavity (103). The noise reduction device (200) includes a protection assembly (210) arranged at the left end of the circular cavity (103) for protecting the circular cavity (103), a noise reduction assembly two (230) arranged in the circular cavity (103) for reducing noise of the hydraulic motor body (100), and a noise reduction cotton pad (240) arranged at the left side of the noise reduction assembly two (230).

2. The low noise rotary hydraulic motor of claim 1, wherein: The protection assembly (210) includes a protection cover (211) arranged at the left end of the circular cavity (103) for protecting the circular cavity (103), a sliding groove (212) formed in the inner wall of the protection cover (211) for mounting the noise reduction assembly one (220), and two sliding grooves (212).

3. The low noise rotary hydraulic motor of claim 2, wherein: The noise reduction assembly one (220) includes a noise reduction cotton sleeve one (221) arranged in the protection cover (211) for reducing noise of the protection cover (211), a sliding block one (222) fixedly installed on the cover body of the noise reduction cotton sleeve one (221) for being inserted into the sliding groove two (212), and a noise reduction strip one (223) fixedly installed on the inner wall of the noise reduction cotton sleeve one (221), and the noise reduction strip one (223) has a plurality of noise reduction strips.

4. The low noise rotary hydraulic motor of claim 1, wherein: The noise reduction assembly two (230) includes a noise reduction cotton sleeve two (231) arranged in the circular cavity (103), a sliding block two (232) fixedly installed on the outer wall of the noise reduction cotton sleeve two (231) for sliding in the sliding groove one (101), and the sliding block two (232) has two sliding blocks, and a noise reduction strip two (233) fixedly installed on the inner wall of the noise reduction cotton sleeve two (231), and the noise reduction strip two (233) has a plurality of noise reduction strips.

5. The low noise rotary hydraulic motor of claim 2, wherein: The left end of the hydraulic motor body (100) is provided with a threaded hole (102) for threadedly connecting with the bolt (213), and the threaded hole (102) has six threaded holes, and the six threaded holes are circumferentially arranged at the left end of the hydraulic motor body (100).

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