A bevel gear driven piston motor

Abstract

This invention discloses a bevel gear driven plunger motor, relating to the field of plunger motors. The invention includes an oil distribution mechanism disposed inside the plunger motor body. The oil distribution mechanism includes an oil distribution plate, high-pressure and low-pressure oil ports formed on the surface of the oil distribution plate, and a driven bevel gear mounted on one side of the oil distribution plate. Through the action of the filter cleaning mechanism, when the impeller is driven to rotate under the impact of liquid, the magnetic block plate rotates, correspondingly cleaning and removing the oil film adhering to the filter screen. This reduces the amount of oil film adhering to the filter screen, increasing the permeability of the filter screen for hydraulic oil delivery. When the magnetic block plate rotates to the position of the L-shaped magnetic block, it drives the unblocking rod to extend into the interior of the filter holes. Combined with the rotation of the unblocking rod, the interior of the filter holes is unblocked and cleaned, preventing impurities in the hydraulic oil from adhering to and extending into the filter holes of the filter screen, reducing filter hole blockage and improving the filter screen's performance.

Description

Technical Field

[0001] This invention relates to the field of piston motor technology, and more particularly to a bevel gear driven piston motor. Background Technology

[0002] A piston motor is a type of hydraulic motor. Its working principle is as follows: the working medium, such as hydraulic oil, acts on the end face of the piston or plunger, causing the piston or plunger to make linear reciprocating motion. Then, through the motion conversion mechanism, such as swashplate, cam, crank, etc., the reciprocating motion of the piston or plunger is converted into the circular motion of the output shaft.

[0003] When a piston motor transmits hydraulic oil, the oil contains many impurities. Therefore, a filter screen needs to be installed in the oil inlet pan of the piston motor to filter the hydraulic oil and prevent impurities from entering the motor's interior. However, over time, the oil adheres to the filter screen, causing an oil film to form. This affects the filter's permeability and reduces its filtering effect. Simultaneously, some impurities in the hydraulic oil adhere to and extend into the filter holes, causing blockage and further reducing the filter's effectiveness. Furthermore, the rated pressure, speed range, low-speed characteristics, and other factors of piston motors are currently considered. The speed adaptability is generally low. The reasons for this phenomenon include: 1. The swashplate axial piston motor has a large lateral force at the piston pair, which makes it difficult for the piston pair oil film to support a larger load. At high speeds, the pv value is high, causing friction and wear; 2. Conical piston and connecting rod swashplate piston motors are driven by connecting rods and conical pistons, resulting in a large impact during operation. They also need to consider the motion interference between the connecting rod piston and the cylinder block conical piston, which also affects the strength of the connecting rod and cylinder block; 3. The rotating components have a large inertial force, so they are prone to wear and strength problems at the piston pair or connecting rod piston under strong impact conditions. Therefore, a bevel gear transmission piston motor is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problems of poor low-speed stability, small speed range, and low rated pressure caused by the large lateral force of the plunger in swashplate axial plunger motors, the large connecting rod impact in swashplate plunger motors, the limited strength of the plunger cylinder, and the large inertia of the rotating body. Simultaneously, it addresses the drawback of oil film formation on the filter screen affecting its permeability and reducing its filtration effect on hydraulic oil, thus proposing a bevel gear driven plunger motor.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A bevel gear driven piston motor includes a piston motor body, an oil inlet pan, a motor pipe, and a filter screen, and further includes:

[0007] A filter cleaning mechanism is used to clean and unclog the filter screen, and the filter cleaning mechanism is located on the filter screen;

[0008] The discharge cooling mechanism is used to cool the oil inlet pan to ensure stable hydraulic oil output. The discharge cooling mechanism is located on the outer wall of the oil inlet pan.

[0009] The oil distribution mechanism is located inside the piston motor body. The oil distribution mechanism includes an oil distribution plate, high-pressure oil ports and low-pressure oil ports on the surface of the oil distribution plate, and a driven bevel gear mounted on one side of the oil distribution plate. The driven bevel gear is connected to multiple piston chambers on the side away from the oil distribution plate. One end of each piston chamber is connected to a piston rod, and the end of the piston rod away from the piston chamber is connected to a driving bevel gear. One side of the driving bevel gear is connected to an output shaft. The driving bevel gear and the driven bevel gear are connected to the piston rod and the piston chamber respectively by ball joints, so that the piston can swing freely relative to the driving bevel gear and the driven bevel gear. The oil distribution plate and the oil inlet plate are connected through the high-pressure oil port and the low-pressure oil port.

[0010] Preferably, the filter cleaning mechanism includes a rotating shaft rotatably connected to the filter screen. A drive impeller and a rotating block are fixedly connected to the outer wall of the rotating shaft. Multiple fixed sleeves are fixedly connected to the outer wall of the rotating block. Multiple telescopic springs are fixedly connected inside the fixed sleeves. A magnetic block plate is fixedly connected to the end of the telescopic spring away from the fixed sleeve, and the magnetic block plate slides to the outside of the fixed sleeve. Multiple unblocking rods are connected to the inner side of the multiple magnetic blocks. Multiple L-shaped magnetic blocks are fixedly connected to the side of the filter screen away from the rotating block.

[0011] Preferably, the filter screen has multiple filter holes, and the multiple filter holes are corresponding to multiple unclogging rods. The multiple unclogging rods are flexible and are slidably attached to the filter screen. The filter screen has a rotating groove, and the rotating shaft is rotatably connected to the filter screen through the rotating groove.

[0012] Preferably, the magnetic block plate and the L-shaped magnetic block are arranged with opposite poles attracting each other, the length of the plurality of unblocking rods is greater than the diameter and depth of the filter hole, the motor tube is connected to the interior of the oil inlet plate, the oil inlet plate is connected to the interior of the plunger motor body, the drive impeller is correspondingly arranged with the motor tube, and the filter screen is fixedly connected to the interior of the oil inlet plate.

[0013] Preferably, the dispensing and cooling mechanism includes multiple circular grooves, with a limiting ring inside each groove. Multiple limiting blocks are slidably connected to the outer wall of the limiting ring. A storage tank is fixedly connected to the top of two of the limiting blocks. A sliding cavity is formed on one side of the inner wall of the storage tank. A sliding spring is fixedly connected inside the sliding cavity. A sliding magnet is fixedly connected to the end of the sliding spring away from the sliding cavity, and the sliding magnet extends to the outside of the sliding cavity. A wiping cloth is provided at the bottom of the sliding magnet.

[0014] Preferably, multiple circular grooves are respectively formed on both sides of the outer wall of the oil inlet plate, the outer wall of the limiting block and the inner wall of the circular groove are slidably fitted together, the storage tank is provided with an inlet, and the inside of the storage tank is filled with alcohol.

[0015] Preferably, the storage tank has a sliding groove on one side of the sliding cavity, the sliding magnetic block extends to the outside of the sliding cavity through the sliding groove, and the sliding magnetic block is slidably connected to the storage tank through the sliding groove. The sliding magnetic block and the magnetic block plate are arranged with opposite poles attracting each other, and the sliding magnetic block and the magnetic block plate are arranged correspondingly.

[0016] Preferably, the bottom of the storage tank is open, the size of the sliding magnetic block is adapted to the position of the opening at the bottom of the storage tank, and the sliding magnetic block blocks the opening at the bottom of the storage tank.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] This invention proposes a bevel gear driven plunger motor. Through the coordinated action of a filtration and cleaning mechanism and a discharge cooling mechanism, the impeller is driven to rotate under the impact of liquid, causing the magnetic block plate to rotate. This, in turn, cleans and removes the oil film adhering to the filter screen, reducing oil film buildup and increasing the filter's permeability for hydraulic oil delivery. When the magnetic block plate rotates to the position of the L-shaped magnetic block, it drives the unblocking rod to extend into the filter holes. The rotation of the unblocking rod further unclogs and cleans the inside of the filter holes, preventing impurities in the hydraulic oil from adhering to and extending into the filter holes on the filter screen, thereby reducing filter blockage. The clogging situation improves the effectiveness of the filter screen; at the same time, when the magnetic block plate rotates, the storage tank can rotate along with the magnetic block plate on the outer wall of the oil inlet plate. Based on the friction between the wiping cloth and the outer wall of the oil inlet plate, the sliding magnetic block is driven to slide into the sliding cavity, causing the sliding magnetic block to disengage from the opening at the bottom of the storage tank, thereby allowing the alcohol inside the storage tank to flow out. At this time, the rotation of the wiping cloth makes the alcohol evenly coated on the outer wall of the oil inlet plate, cooling the outer wall and ensuring the temperature of the hydraulic oil inside the oil inlet plate, thus improving the stability of hydraulic oil delivery and the stable operation of this plunger motor body.

[0019] This invention proposes a bevel gear driven piston motor. Through the action of an oil distribution mechanism, this structure uses the transmission of the driving and driven bevel gears to simultaneously drive the relative motion between the piston rods, resulting in a reciprocating change in the volume of the piston cavity. This avoids the constraint of lateral force on the swashplate tilt angle in swashplate axial piston motors, and also avoids the constraint of motion interference between the piston and cylinder, and between the connecting rod and piston in swashplate motors on the swashplate tilt angle. Therefore, the included angle between the input shaft and the piston cavity axis can be further increased, allowing for larger displacement and higher pressure under the same geometric conditions, thus increasing power. Simultaneously, eliminating parts such as the cylinder block further reduces mass, thereby improving the power density ratio.

[0020] To improve efficiency, the piston motor body is free from lateral forces and has a short contact length, thus reducing mechanical friction. Furthermore, the cylindrical surface seal minimizes leakage, resulting in high efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a bevel gear driven piston motor proposed in this invention;

[0023] Figure 2 This is a side view of a bevel gear driven piston motor proposed in this invention.

[0024] Figure 3 This is a schematic diagram of the oil inlet plate of a bevel gear driven plunger motor proposed in this invention;

[0025] Figure 4 This is a top view schematic diagram of the oil inlet plate structure of a bevel gear driven plunger motor proposed in this invention;

[0026] Figure 5 This is a cross-sectional view of the oil inlet plate of a bevel gear driven plunger motor proposed in this invention.

[0027] Figure 6 This is a cross-sectional structural schematic diagram of a reservoir for a bevel gear driven plunger motor proposed in this invention.

[0028] Figure 7 This is a side cross-sectional view of a filter screen for a bevel gear driven plunger motor proposed in this invention.

[0029] Figure 8This is a cross-sectional view of a fixed sleeve for a bevel gear driven piston motor proposed in this invention.

[0030] Figure 9 This is a cross-sectional structural schematic diagram of the piston motor body of a bevel gear transmission piston motor proposed in this invention.

[0031] Figure 10 This is a cross-sectional schematic diagram of the oil distribution mechanism for a bevel gear driven plunger motor proposed in this invention.

[0032] In the diagram: 1. Plunger motor body; 2. Oil inlet plate; 3. Motor pipe; 4. Filter screen; 401. Rotating shaft; 402. Drive impeller; 403. Rotating block; 404. Magnetic block plate; 405. Unblocking rod; 406. L-shaped magnetic block; 407. Fixed sleeve; 408. Telescopic spring; 5. Circular groove; 501. Limiting ring; 502. Limiting block; 503. Reservoir; 504. Sliding cavity; 505. Sliding spring; 506. Sliding magnetic block; 507. Wiping cloth; 6. Oil distribution plate; 601. Driven bevel gear; 602. Driving bevel gear; 603. Output shaft; 604. High-pressure oil port; 605. Low-pressure oil port; 606. Plunger cavity; 607. Plunger rod. Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0036] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 7 , Figure 8 As shown, a bevel gear driven plunger motor includes a plunger motor body 1, an oil inlet plate 2, a motor pipe 3, and a filter screen 4. It also includes a filter cleaning mechanism for cleaning and unclogging the filter screen 4. The filter cleaning mechanism includes a rotating shaft 401 rotatably connected to the filter screen 4. A drive impeller 402 and a rotating block 403 are fixedly connected to the outer wall of the rotating shaft 401. Multiple fixed sleeves 407 are fixedly connected to the outer wall of the rotating block 403. Multiple telescopic springs 408 are fixedly connected inside the fixed sleeves 407. A magnetic block plate 404 is fixedly connected to one end of each telescopic spring 408 away from the fixed sleeve 407, and the magnetic block plate 404 slides to the outside of the fixed sleeve 407. Multiple unclogging rods 405 are connected to the inner sides of the multiple magnetic blocks 404. Multiple L-shaped magnetic blocks 406 are fixedly connected to the side of the filter screen 4 away from the rotating block 403.

[0037] The present invention is further described in detail as follows: the filter screen 4 has a plurality of filter holes, and the plurality of filter holes are correspondingly arranged with a plurality of unclogging rods 405. The plurality of unclogging rods 405 are flexible and are slidably fitted with the filter screen 4. The filter screen 4 has a rotating groove, and the rotating shaft 401 is rotatably connected to the filter screen 4 through the rotating groove.

[0038] The present invention is further described in detail as follows: the magnetic block plate 404 and the L-shaped magnetic block 406 are arranged to attract each other with opposite poles; the length of the plurality of unblocking rods 405 is greater than the diameter and depth of the filter hole; the motor tube 3 is connected to the interior of the oil inlet plate 2; the oil inlet plate 2 is connected to the interior of the plunger motor body 1; the drive impeller 402 is correspondingly arranged with the motor tube 3; and the filter screen 4 is fixedly connected to the interior of the oil inlet plate 2.

[0039] With the above technical solution, when the impeller 402 rotates due to liquid impact, the magnetic block plate 404 rotates. When the magnetic block plate 404 rotates, the multiple flexible unblocking rods 405 on its inner side can rotate and clean the outer wall of the filter screen 4, thereby removing the oil film adhering to the filter screen 4. This reduces the amount of oil film adhering to the filter screen 4, increases the permeability of the filter screen 4 for hydraulic oil delivery, and correspondingly improves the filtration effect of the filter screen 4 on the hydraulic oil. Simultaneously, in the magnetic... When the block plate 404 rotates, when the magnetic block plate 404 rotates to the position of the L-shaped magnetic block 406, the magnetic block plate 404 and the L-shaped magnetic block 406 are set to attract each other with opposite poles, causing the magnetic block plate 404 to slide, which drives the unblocking rod 405 to extend into the interior of the filter hole. In addition, the rotation of the unblocking rod 405 can unclog and clean the interior of the filter hole, preventing impurities in the hydraulic oil from adhering to and extending into the filter hole on the filter screen 4, thereby reducing the clogging of the filter hole and improving the performance of the filter screen 4.

[0040] An oil distribution mechanism is located inside the piston motor body 1. The oil distribution mechanism includes an oil distribution plate 6, a high-pressure oil port 604 and a low-pressure oil port 605 formed on the surface of the oil distribution plate 6, and a driven bevel gear 601 installed on one side of the oil distribution plate 6. The driven bevel gear 601 is connected to a plurality of piston chambers 606 on the side away from the oil distribution plate 6. One end of each piston chamber 606 is connected to a piston rod 607. The end of the piston rod 607 away from the piston chamber 606 is connected to a driving bevel gear 602. One side of the driving bevel gear 602 is connected to an output shaft 603. The driving bevel gear 602 and the driven bevel gear 601 are respectively connected to the piston rod 607 and the piston chamber 606 by ball joints, so that the piston can swing freely relative to the driving bevel gear 602 and the driven bevel gear 601. The oil distribution plate 6 and the inside of the oil inlet plate 2 are connected through the high-pressure oil port 604 and the low-pressure oil port 605.

[0041] like Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, the discharge cooling mechanism is used to cool the oil inlet pan 2 to ensure stable hydraulic oil output. The discharge cooling mechanism is located on the outer wall of the oil inlet pan 2. The discharge cooling mechanism includes multiple circular grooves 5. A limiting ring 501 is provided inside the circular groove 5. Multiple limiting blocks 502 are slidably connected to the outer wall of the limiting ring 501. A storage tank 503 is fixedly connected to the top of two of the limiting blocks 502. A sliding cavity 504 is opened on one side of the inner wall of the storage tank 503. A sliding spring 505 is fixedly connected inside the sliding cavity 504. A sliding magnet 506 is fixedly connected to the end of the sliding spring 505 away from the sliding cavity 504, and the sliding magnet 506 extends to the outside of the sliding cavity 504. A wiping cloth 507 is provided at the bottom of the sliding magnet 506.

[0042] The present invention is further described in detail as follows: multiple circular grooves 5 are respectively opened on both sides of the outer wall of the oil inlet plate 2; the outer wall of the limiting block 502 and the inner wall of the circular groove 5 are slidably fitted together; the storage tank 503 is provided with an inlet; and the interior of the storage tank 503 is filled with alcohol.

[0043] The present invention is further described in detail as follows: the storage tank 503 has a sliding groove on one side of the sliding cavity 504; the sliding magnetic block 506 extends to the outside of the sliding cavity 504 through the sliding groove; the sliding magnetic block 506 is slidably connected to the storage tank 503 through the sliding groove; the sliding magnetic block 506 and the magnetic block plate 404 are arranged with opposite poles attracting each other; the sliding magnetic block 506 and the magnetic block plate 404 are arranged correspondingly; the bottom of the storage tank 503 is open; the size of the sliding magnetic block 506 is adapted to the position of the bottom opening of the storage tank 503; and the sliding magnetic block 506 blocks the opening at the bottom of the storage tank 503.

[0044] With the above technical solution, when the magnetic block plate 404 rotates, based on its corresponding opposite pole attraction with the sliding magnetic block 506, the reservoir 503 can rotate on the outer wall of the oil inlet pan 2 along with the rotation of the magnetic block plate 404. Based on the friction between the wiping cloth 507 and the outer wall of the oil inlet pan 2, the sliding magnetic block 506 is driven to slide into the sliding cavity 504, causing the sliding magnetic block 506 to disengage from the opening at the bottom of the reservoir 503, and the alcohol inside the reservoir 503 flows out accordingly. At this time, with the rotation of the wiping cloth 507, the alcohol is evenly coated on the outer wall of the oil inlet pan 2, cooling the outer wall and ensuring the temperature of the hydraulic oil inside the oil inlet pan 2, thus improving the stability of the hydraulic oil delivery and the stable operation of the plunger motor body 1.

[0045] like Figure 1-7In this invention, the working principle of the bevel gear transmission plunger motor is as follows: When the operator uses the plunger motor body 1 to work, the hydraulic oil enters the oil inlet plate 2 through the motor pipe 3. Based on the liquid impact and the corresponding setting of the motor pipe 3 and the drive impeller 402, the drive impeller 402 is impacted, and the drive impeller 402 is rotated accordingly.

[0046] Based on the fact that the high-pressure oil port 604 and the low-pressure oil port 605 are connected to the inside of the oil inlet plate 2, the filtered liquid oil can enter the inside of the distribution plate 6. The high-pressure oil enters the bottom of the driven bevel gear 601 from the high-pressure oil port 604 of the distribution plate 6, and then enters the plunger cavity 606. The high-pressure oil pushes the plunger rod 607 to move along its axis. The plunger rod 607 is evenly distributed around the driving bevel gear 602 and the driven bevel gear 601. Therefore, the force of the high-pressure oil on the plunger rod 607 can be decomposed into the axial force along the axis of the driving bevel gear 602 and the tangential force that drives the driving bevel gear 602 to rotate, thereby driving the driving bevel gear 602 to rotate. The driving bevel gear 602 drives the driven bevel gear 601. During the rotation of the gears, the plunger cavity 606 reciprocates. During the rotation of the driven bevel gear 601, the high and low pressure oil chambers are connected, thereby realizing oil suction and discharge. The torque is output through the driving bevel gear 602.

[0047] It should be noted that the rotation of the impeller 402 due to liquid impact is existing technology, and its working principle will not be described in detail.

[0048] When the impeller 402 rotates due to liquid impact, it drives the rotating shaft 401 to rotate, which in turn drives the rotating block 403 to rotate. As the rotating block 403 rotates, it drives the multiple fixed sleeves 407 on its outer wall to rotate, which in turn causes the magnetic block plate 404 to rotate. When the magnetic block plate 404 rotates, it utilizes the multiple flexible cleaning rods 405 installed on its inner side to clean the outer wall of the filter screen 4. By using the cleaning rods 405 to rotate and clean the filter screen 4, the oil film adhering to the filter screen 4 can be removed, reducing the amount of oil film adhering to the filter screen 4 and increasing the filter screen 4's effectiveness against liquid. The improved permeability of hydraulic oil delivery enhances the filtration effect of the filter screen 4. Simultaneously, as the magnetic block plate 404 rotates, when it reaches the position of the L-shaped magnetic block 406, the magnetic block plate 404 slides due to the attraction between opposite poles of the magnetic block plate 404 and the L-shaped magnetic block 406. This causes the unblocking rod 405 to extend into the filter holes. The rotation of the unblocking rod 405 further unclogs and cleans the inside of the filter holes, preventing impurities in the hydraulic oil from adhering to and extending into the filter holes of the filter screen 4. This reduces clogging and improves the performance of the filter screen 4.

[0049] It should be noted that: when the piston motor body 1 is working for a long time, its outer wall will generate a high temperature, and the corresponding temperature will be transferred to the outer wall of the oil inlet plate 2, resulting in the hydraulic oil being at a high temperature during delivery, which affects the delivery effect of the hydraulic oil.

[0050] When the magnetic block plate 404 rotates, based on its corresponding opposite pole attraction with the sliding magnetic block 506, the reservoir 503 rotates along with the magnetic block plate 404 on the outer wall of the oil inlet pan 2. Due to the friction between the wiping cloth 507 and the outer wall of the oil inlet pan 2, the sliding magnetic block 506 is driven to slide into the sliding cavity 504, causing the sliding magnetic block 506 to disengage from the opening at the bottom of the reservoir 503, thereby causing the alcohol inside the reservoir 503 to flow out. At this time, the rotation of the wiping cloth 507 makes the alcohol evenly coated on the outer wall of the oil inlet pan 2, cooling the outer wall and ensuring the temperature of the hydraulic oil inside the oil inlet pan 2, thus improving the stability of the hydraulic oil delivery and the stable operation of the plunger motor body 1.

[0051] It should be noted that the specific model and specifications of the plunger motor body 1, oil inlet plate 2 and motor pipe 3 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A bevel gear driven plunger motor, comprising a plunger motor body (1), an oil inlet pan (2), a motor pipe (3), and a filter screen (4), characterized in that, It also includes: A filter cleaning mechanism is used to clean and unclog the filter screen (4), and the filter cleaning mechanism is located on the filter screen (4); The discharge cooling mechanism is used to cool the oil inlet pan (2) to ensure stable output of hydraulic oil. The discharge cooling mechanism is located on the outer wall of the oil inlet pan (2). The oil distribution mechanism is located inside the piston motor body (1). The oil distribution mechanism includes an oil distribution plate (6), a high-pressure oil port (604) and a low-pressure oil port (605) opened on the surface of the oil distribution plate (6), and a driven bevel gear (601) installed on one side of the oil distribution plate (6). The driven bevel gear (601) is connected to a plurality of piston chambers (606) on the side away from the oil distribution plate (6). One end of the piston chamber (606) is connected to a piston rod (607), and the piston rod (607) is away from the piston chamber (606). One end is connected to a drive bevel gear (602), and one side of the drive bevel gear (602) is connected to an output shaft (603). The drive bevel gear (602) and the driven bevel gear (601) are connected to the plunger rod (607) and the plunger cavity (606) respectively by ball joints, so that the plunger can swing freely relative to the drive bevel gear (602) and the driven bevel gear (601). The oil distribution plate (6) and the inside of the oil inlet plate (2) are connected through the high pressure oil port (604) and the low pressure oil port (605). The filtration and cleaning mechanism includes a rotating shaft (401) rotatably connected to the filter screen (4). A drive impeller (402) and a rotating block (403) are fixedly connected to the outer side wall of the rotating shaft (401). A plurality of fixed sleeves (407) are fixedly connected to the outer side wall of the rotating block (403). A plurality of telescopic springs (408) are fixedly connected inside the fixed sleeves (407). A magnetic block plate (404) is fixedly connected to one end of the telescopic spring (408) away from the fixed sleeve (407), and the magnetic block plate (404) slides to the outside of the fixed sleeve (407). A plurality of unblocking rods (405) are connected to the inner side of the plurality of magnetic blocks (404). A plurality of L-shaped magnetic blocks (406) are fixedly connected to the side of the filter screen (4) away from the rotating block (403). The dispensing and cooling mechanism includes multiple circular grooves (5). A limiting ring (501) is provided inside each circular groove (5). Multiple limiting blocks (502) are slidably connected to the outer wall of the limiting ring (501). A storage tank (503) is fixedly connected to the top of two of the limiting blocks (502). A sliding cavity (504) is opened on one side of the inner wall of the storage tank (503). A sliding spring (505) is fixedly connected inside the sliding cavity (504). A sliding magnet (506) is fixedly connected to the end of the sliding spring (505) away from the sliding cavity (504). The sliding magnetic block (506) extends to the outside of the sliding cavity (504), and a wiping cloth (507) is provided at the bottom of the sliding magnetic block (506). The storage tank (503) is provided with a sliding groove on one side of the sliding cavity (504). The sliding magnetic block (506) extends to the outside of the sliding cavity (504) through the sliding groove, and the sliding magnetic block (506) is slidably connected to the storage tank (503) through the sliding groove. The sliding magnetic block (506) and the magnetic block plate (404) are arranged with opposite poles attracting each other, and the sliding magnetic block (506) and the magnetic block plate (404) are arranged correspondingly.

2. The bevel gear transmission piston motor according to claim 1, characterized in that, The filter screen (4) has multiple filter holes, and the multiple filter holes are corresponding to multiple unclogging rods (405). The multiple unclogging rods (405) are flexible and are slidably attached to the filter screen (4). The filter screen (4) has a rotating groove, and the rotating shaft (401) is rotatably connected to the filter screen (4) through the rotating groove.

3. A bevel gear transmission piston motor according to claim 1, characterized in that, The magnetic block plate (404) and the L-shaped magnetic block (406) are arranged with opposite poles attracting each other. The length of the multiple unblocking rods (405) is greater than the diameter and depth of the filter hole. The motor tube (3) and the oil inlet plate (2) are connected internally. The oil inlet plate (2) and the plunger motor body (1) are connected internally. The drive impeller (402) and the motor tube (3) are correspondingly arranged. The filter screen (4) is fixedly connected inside the oil inlet plate (2).

4. A bevel gear transmission piston motor according to claim 1, characterized in that, Multiple circular grooves (5) are respectively opened on both sides of the outer wall of the oil inlet plate (2). The outer side wall of the limiting block (502) and the inner side wall of the circular groove (5) are slidably fitted. The storage tank (503) is provided with an inlet. The storage tank (503) is filled with alcohol.

5. A bevel gear transmission piston motor according to claim 1, characterized in that, The bottom of the storage tank (503) is open, and the size of the sliding magnetic block (506) is adapted to the position of the bottom opening of the storage tank (503), and the sliding magnetic block (506) blocks the opening at the bottom of the storage tank (503).

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