A hydraulic cycloidal motor

Abstract

This utility model relates to a hydraulic cycloidal motor, belonging to the technical field of hydraulic cycloidal motors. The hydraulic cycloidal motor includes: a motor body and a filter mechanism disposed on the surface of the motor body. The filter mechanism includes a connecting pipe threaded to the oil inlet of the motor body, a filter cylinder fixedly connected to the top of the connecting pipe, an oil inlet pipe connected to the upper part of the filter cylinder surface, a filter cover disposed inside the filter cylinder at the upper part, filter holes formed on the surface of the filter cover, and a filter element disposed inside the filter cylinder at the bottom of the filter cover, the filter element being positioned directly above the connecting pipe. The aforementioned hydraulic cycloidal motor achieves a dual filtration effect through the filter cover and filter element. The tangential cooperation between the oil inlet pipe and the filter cylinder forms a centrifugal force pretreatment, classifying and intercepting impurities of different sizes in the hydraulic oil, reducing the impurity content entering the motor body, effectively reducing wear on precision components such as the cycloidal rotor and stator, and extending the motor's service life.

Description

Technical Field

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

[0002] The hydraulic cycloidal motor is a low-speed, high-torque hydraulic motor that employs an internal meshing cycloidal gear structure. It features a compact structure and a wide speed range, and is widely used in engineering machinery and other fields. Its core working principle involves driving the cycloidal rotor and stator to move relative to each other using high-pressure hydraulic oil, achieving continuous rotational output by utilizing the volume change of the sealed cavity between the teeth.

[0003] Hydraulic oil in hydraulic systems often contains impurities such as metal shavings, dust, and rubber particles. These impurities enter the motor along with the oil, accelerating the wear of precision-fitted components such as the cycloidal rotor and stator. This leads to decreased motor output efficiency and shortened service life. Existing motor filtration devices are mostly single-element filter structures, with limited filtration accuracy and prone to clogging due to impurity accumulation. This necessitates frequent shutdowns to replace the filter element, affecting the continuous operation efficiency of the equipment. In some motors with integrated filtration functions, the filter assembly is fixedly connected to the motor body, making maintenance and disassembly difficult and increasing maintenance costs. Utility Model Content

[0004] Therefore, it is necessary to provide a hydraulic cycloidal motor to address the above problems.

[0005] A hydraulic cycloidal motor includes: a motor body, a transverse mounting block fixedly connected to the side of the motor body near the output shaft, a mounting hole fixedly connected to the side of the transverse mounting block near the motor body, and mounting holes being formed on the surfaces of both the transverse mounting block and the mounting hole; and a filter mechanism disposed on the surface of the motor body, the filter mechanism including a connecting pipe threadedly connected to the oil inlet of the motor body, a filter cylinder fixedly connected to the top of the connecting pipe, an oil inlet pipe connected to the upper part of the surface of the filter cylinder, a filter cover disposed at the upper part inside the filter cylinder, filter holes being formed on the surface of the filter cover, a filter element disposed inside the filter cylinder at the bottom of the filter cover, and the filter element being disposed directly above the connecting pipe.

[0006] In one embodiment, the filter cover is shaped like a frustum, wider at the top and narrower at the bottom, and the filter holes are disposed on the inclined sidewall of the filter cover.

[0007] In one embodiment, the oil inlet pipe is tangentially arranged to the filter cylinder, the filter element has the same bottom diameter as the filter cover, and the filter element has the same axis as the filter cover.

[0008] In one embodiment, the filter cylinder is provided with a dirt removal mechanism, which includes a rotating shaft rotatably connected to the center of the top of the filter cover. The rotating shaft has blades evenly distributed on its surface, corresponding to the oil inlet pipe, and a scraper is provided on its surface.

[0009] In one embodiment, a fixing rod is fixedly connected to the surface of the rotating shaft below the blade, one end of the fixing rod is slidably connected to a telescopic rod, and one end of the telescopic rod is fixedly connected to a scraper.

[0010] In one embodiment, a spring is fixedly connected between the scraper and the end of the fixing rod, the scraper is inclinedly disposed on the surface of the filter cover, and the scraper and the filter cover are inclinedly disposed correspondingly.

[0011] In one embodiment, the surface of the connecting pipe is provided with external threads, and the top of the motor body is provided with a threaded hole corresponding to the external threads.

[0012] In one embodiment, a slag guide seat is fixedly connected to the bottom of the filter cylinder. The slag guide seat is arranged in an annular funnel shape, and the inner diameter of the slag guide seat is adapted to the outer diameter of the filter element. A limit ring is fixedly connected to the top of the slag guide seat, and the inner diameter of the limit ring is set to correspond to the outer diameter of the filter element.

[0013] Beneficial effects

[0014] 1. The above-mentioned hydraulic cycloidal motor achieves a dual filtration effect through the filter cover and filter element. The tangential cooperation between the oil inlet pipe and the filter cylinder forms a centrifugal force pretreatment, which classifies and intercepts impurities of different sizes in the hydraulic oil, reduces the impurity content entering the motor body, effectively reduces the wear of precision components such as the cycloidal rotor and stator, and extends the service life of the motor.

[0015] 2. The oil flow drives the blades to rotate the shaft, causing the scraper to adhere tightly to the inclined surface of the filter cover under the action of spring force, scraping away the attached impurities in real time and preventing filter pore blockage. The annular funnel-shaped slag guide seat can collect impurities in a concentrated manner, which facilitates regular cleaning and reduces the number of downtime maintenance. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2This is a schematic diagram of the internal structure of the filter cartridge of this utility model;

[0019] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0020] Figure 4 This is a schematic diagram of the impurity removal mechanism of this utility model.

[0021] Figure label:

[0022] 100. Motor body; 110. Vertical mounting block; 120. Horizontal mounting block; 130. Mounting hole; 200. Filtering mechanism; 210. Filter cylinder; 220. Oil inlet pipe; 230. Oil outlet pipe; 240. Filter cover; 250. Filter hole; 260. Filter element; 270. Connecting pipe; 280. External thread; 300. Impurity removal mechanism; 310. Rotating shaft; 320. Blade; 330. Fixing rod; 340. Telescopic rod; 350. Scraper; 360. Spring; 370. Slag guide seat; 380. Limiting ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] The following is combined Figure 1 - Figure 4 This invention describes a hydraulic cycloidal motor.

[0025] In one embodiment, a hydraulic cycloidal motor includes: a motor body 100, a transverse mounting block 120 fixedly connected to the side of the motor body 100 near the output shaft, a mounting hole 130 fixedly connected to the side of the transverse mounting block 120 near the motor body 100, and mounting holes 130 being provided on the surfaces of both the transverse mounting block 120 and the mounting hole 130; and a filter mechanism 200 disposed on the surface of the motor body 100, the filter mechanism 200 including a connecting pipe 270 threadedly connected to the oil inlet of the motor body 100, a filter cylinder 210 fixedly connected to the top of the connecting pipe 270, an oil inlet pipe 220 connected to the upper part of the surface of the filter cylinder 210, a filter cover 240 disposed at the upper part inside the filter cylinder 210, a filter hole 250 provided on the surface of the filter cover 240, and a filter element 260 disposed inside the filter cylinder 210 at the bottom of the filter cover 240, the filter element 260 being disposed directly above the connecting pipe 270.

[0026] like Figure 1 , Figure 3 and Figure 4 As shown, the filter cover 240 is shaped like a frustum, wider at the top and narrower at the bottom, with filter holes 250 located on the inclined sidewall of the filter cover 240. The oil inlet pipe 220 is tangentially arranged to the filter cylinder 210, and the filter element 260 has the same bottom diameter as the filter cover 240, with the filter element 260 and the filter cover 240 having the same axis. The connecting pipe 270 has an external thread 280 on its surface, and the motor body 100 has a threaded hole corresponding to the external thread 280 on its top. The motor body 100 also has an oil outlet pipe 230 on its top.

[0027] In this embodiment, the cooperation between the horizontal mounting block 120 and the vertical mounting block 110, along with the mounting holes 130 on the surface, can meet the needs of different installation scenarios and improve the flexibility of motor installation. The filter mechanism 200 is detachably connected to the motor body 100 through the external thread 280 of the connecting pipe 270, facilitating future maintenance and replacement of the filter mechanism 200. The oil inlet pipe 220 is tangentially set to the filter cylinder 210, causing the hydraulic oil to rotate after entering the filter cylinder 210. Under the action of centrifugal force, larger particles of impurities can be initially separated, achieving a staged filtration effect. The frustum-shaped filter cover 240, with its filter holes 250 on its inclined sidewall, can perform preliminary filtration of the hydraulic oil. Impurities that do not pass through the filter holes 250 rotate down and are collected at the bottom of the filter cover 240. The coaxial arrangement of the filter element 260 and the filter cover 240 ensures that the hydraulic oil can smoothly enter the filter element 260 for secondary filtration, improving the filtration effect.

[0028] like Figure 2 , Figure 3 and Figure 4 As shown, a cleaning mechanism 300 is provided inside the filter cylinder 210. The cleaning mechanism 300 includes a rotating shaft 310 rotatably connected to the top center of the filter cover 240. The surface of the rotating shaft 310 is evenly distributed with blades 320 corresponding to the oil inlet pipe 220, and a scraper 350 is provided on the surface of the rotating shaft 310. A fixing rod 330 is fixedly connected to the surface of the rotating shaft 310 below the blades 320. A telescopic rod 340 is slidably connected to one end of the fixing rod 330, and a scraper 350 is fixedly connected to one end of the telescopic rod 340. A spring 360 is fixedly connected between the scraper 350 and the end of the fixing rod 330. The scraper 350 is inclinedly disposed on the surface of the filter cover 240, and the scraper 350 is disposed opposite to the inclined surface of the filter cover 240. A slag guide seat 370 is fixedly connected to the bottom of the filter cartridge 210. The slag guide seat 370 is arranged in an annular funnel shape, and the inner diameter of the slag guide seat 370 is adapted to the outer diameter of the filter element 260. A limit ring 380 is fixedly connected to the top of the slag guide seat 370, and the inner diameter of the limit ring 380 is set to correspond to the outer diameter of the filter element 260.

[0029] In this embodiment, the impurity removal mechanism 300 effectively prevents the filter holes 250 on the surface of the filter cover 240 from being clogged by impurities. When hydraulic oil enters from the inlet pipe 220, it impacts the blades 320, causing the rotating shaft 310 to rotate. This, in turn, causes the fixed rod 330, the telescopic rod 340, and the scraper 350 to rotate together. Under the elastic force of the spring 360, the scraper 350 can closely adhere to the inclined surface of the filter cover 240, scraping off the impurities attached to the surface and allowing them to fall to the bottom of the filter cover 240. The annular funnel-shaped design of the slag guide seat 370 facilitates the collection of impurities filtered by the filter element 260, while the limiting ring 380 can limit the position of the filter element 260, ensuring the stability of the filter element 260 installation.

[0030] Working principle: Hydraulic oil enters the filter cylinder 210 through the inlet pipe 220. Since the inlet pipe 220 is tangential to the filter cylinder 210, the hydraulic oil rotates within the filter cylinder 210. Under centrifugal force, larger particles of impurities are thrown towards the cylinder wall. The hydraulic oil then flows to the filter cover 240, where it undergoes preliminary filtration through the filter holes 250 on its inclined side wall, intercepting some impurities. The pre-filtered hydraulic oil enters the filter element 260, where it undergoes further filtration to remove minute impurities. The clean hydraulic oil then enters the motor body 100 through the connecting pipe 270, driving the internal components of the motor to operate, converting hydraulic energy into mechanical energy, and outputting it through the output shaft.

[0031] During the flow of hydraulic oil, its impact force drives the blades 320 and the shaft 310 to rotate, causing the scraper 350 to rotate tightly against the surface of the filter cover 240 under the action of the spring 360, scraping away impurities near the filter holes 250 and preventing clogging. The scraped-off impurities fall to the bottom of the filter cover 240 under the action of gravity, facilitating subsequent cleaning.

[0032] It should be noted that the motor body 100, filter cartridge 210, filter element 260, filter cover 240, etc. mentioned above are all components with relatively mature existing technology. The specific models can be selected according to actual needs, and will not be elaborated here.

[0033] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hydraulic gerotor motor, characterized in that, include: A motor body (100) is fixedly connected to a transverse mounting block (120) on the side of the motor body (100) near the output shaft. The transverse mounting block (120) is fixedly connected to a mounting hole (130) on the side of the motor body (100). The transverse mounting block (120) and the mounting hole (130) are both provided with mounting holes (130). A filter mechanism (200) is disposed on the surface of the motor body (100). The filter mechanism (200) includes a connecting pipe (270) threaded to the oil inlet of the motor body (100). A filter cylinder (210) is fixedly connected to the top of the connecting pipe (270). An oil inlet pipe (220) is connected to the upper part of the surface of the filter cylinder (210). A filter cover (240) is disposed at the upper part of the inside of the filter cylinder (210). A filter hole (250) is opened on the surface of the filter cover (240). A filter element (260) is disposed inside the filter cylinder (210) at the bottom of the filter cover (240). The filter element (260) is disposed directly above the connecting pipe (270).

2. The hydraulic gerotor motor of claim 1, wherein, The filter cover (240) is shaped like a frustum with a wider top and a narrower bottom, and the filter holes (250) are located on the inclined sidewall of the filter cover (240).

3. The hydraulic gerotor motor of claim 2, wherein, The oil inlet pipe (220) is tangentially arranged with the filter cylinder (210), the filter element (260) and the filter cover (240) have the same bottom diameter, and the filter element (260) and the filter cover (240) have the same axis.

4. The hydraulic cycloidal motor according to claim 1, characterized in that, The filter cylinder (210) is provided with a cleaning mechanism (300), which includes a rotating shaft (310) rotatably connected to the top center of the filter cover (240). The rotating shaft (310) has blades (320) evenly distributed on its surface corresponding to the oil inlet pipe (220), and a scraper (350) is provided on its surface.

5. The hydraulic cycloidal motor according to claim 4, characterized in that, A fixing rod (330) is fixedly connected to the surface of the rotating shaft (310) below the blade (320). A telescopic rod (340) is slidably connected to one end of the fixing rod (330), and a scraper (350) is fixedly connected to one end of the telescopic rod (340).

6. The hydraulic cycloidal motor according to claim 4, characterized in that, A spring (360) is fixedly connected between the scraper (350) and the end of the fixing rod (330). The scraper (350) is inclinedly arranged on the surface of the filter cover (240), and the scraper (350) and the filter cover (240) are inclinedly arranged respectively.

7. The hydraulic cycloidal motor according to claim 1, characterized in that, The surface of the connecting pipe (270) is provided with an external thread (280), and the top of the motor body (100) is provided with a threaded hole corresponding to the external thread (280).

8. The hydraulic cycloidal motor according to claim 1, characterized in that, The bottom of the filter cylinder (210) is fixedly connected to a slag guide seat (370), which is arranged in an annular funnel shape. The inner diameter of the slag guide seat (370) is adapted to the outer diameter of the filter element (260). The top of the slag guide seat (370) is fixedly connected to a limiting ring (380), and the inner diameter of the limiting ring (380) is set to correspond to the outer diameter of the filter element (260).

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