HMM cycloid hydraulic motor of brand-new structure

Abstract

The HMM cycloid hydraulic motor of the brand new structure comprises a motor shell, a rear cover is arranged below the motor shell, a step groove is formed in the bottom of the motor shell, and a plurality of step blocks matched with the step groove are fixedly connected to the top of the rear cover. The O-shaped sealing ring is installed in the inner cavity of the annular groove, then the stepped block is plugged into the inner cavity of the stepped groove, the O-shaped sealing ring deforms in the inner cavity of the annular groove, the stepped sealing effect is achieved, the concave sealing ring installed in the inner cavity of the rectangular cavity is inserted by the annular extrusion block, and the sealing effect is good. When the hydraulic motor is in a high-pressure working environment, the concave sealing ring deforms to perform extrusion deformation type sealing on the joint of the motor casing and the rear cover, so that multiple sealing is realized, namely a stepped structure and an extrusion deformation type multiple sealing structure are adopted, the hydraulic motor can be better sealed in the high-pressure working environment, the reliability of mechanical equipment is improved, and the service life of the hydraulic motor is prolonged. And the purpose of reducing the maintenance cost is achieved.

Description

Technical Field

[0001] This utility model belongs to the technical field of HMM cycloidal hydraulic motors, and in particular relates to a novel HMM cycloidal hydraulic motor. Background Technology

[0002] HMM cycloidal hydraulic motors have advantages such as compact structure, reliable performance, and ease of use, and are widely used in various mechanical equipment. During use, it is necessary to install, debug, and maintain them correctly according to the characteristics and usage requirements of the motor to ensure normal operation and service life.

[0003] The tail cover of an HMM cycloidal hydraulic motor typically uses only one O-ring seal. Since the tail cover is also connected to the oil pipeline, the pressure on the tail cover is generally high, which can lead to oil leakage. Therefore, we designed a new HMM cycloidal hydraulic motor with a stepped structure and a multi-seal structure based on extrusion deformation. This allows the hydraulic motor to seal better under high-pressure working conditions, improving the reliability of the mechanical equipment and reducing maintenance costs. Utility Model Content

[0004] The purpose of this invention is to provide a novel HMM cycloidal hydraulic motor with a stepped structure and a multi-seal structure based on extrusion deformation. This structure enables the hydraulic motor to better seal under high-pressure working conditions, improving the reliability of mechanical equipment and reducing maintenance costs, thereby solving the aforementioned technical problems.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A novel HMM cycloidal hydraulic motor includes a motor housing, a rear cover at the bottom of the motor housing, a stepped groove at the bottom of the motor housing, a plurality of stepped blocks adapted to the stepped groove fixedly connected to the top of the rear cover, an annular groove at the top of the inner cavity of the stepped groove, an O-ring seal installed in the inner cavity of the annular groove, the top of the stepped blocks abutting against the O-ring seal, an annular extrusion block fixedly connected to the top of the rear cover, a rectangular cavity at the bottom of the motor housing, a concave seal installed in the inner cavity of the rectangular cavity, and the annular extrusion block extending into the inner cavity of the concave seal.

[0006] Preferably, the cross-section of the annular extrusion block is an isosceles trapezoid.

[0007] Preferably, the cross-section of the inner cavity of the concave sealing ring is rectangular.

[0008] Preferably, the top of the rear cover is fixedly connected with a plurality of positioning pins, the positioning pins being located between the annular extrusion block and the stepped block, and the bottom of the motor housing is provided with positioning holes that are adapted to the positioning pins.

[0009] Preferably, the length of the positioning pin is longer than the height of the annular extrusion block and the stepped block.

[0010] The beneficial effects of this utility model are:

[0011] 1. This utility model involves inserting an O-ring seal into the inner cavity of an annular groove, followed by inserting a stepped block into the inner cavity of the stepped groove. This causes the O-ring seal to deform within the annular groove, achieving a stepped sealing effect. Furthermore, a concave seal installed in the inner cavity of a rectangular cavity is inserted by an annular extrusion block. The concave seal deforms, extruding and deforming to seal the connection between the motor housing and the rear cover. This achieves multiple seals, thus enabling the hydraulic motor to better seal under high-pressure working conditions by employing a stepped structure and an extrusion deformation multiple sealing structure. This improves the reliability of mechanical equipment and reduces maintenance costs.

[0012] 2. By using the positioning pin and positioning hole in combination, when the back cover is connected to the motor housing, the positioning pin on the back cover will first insert into the inner cavity of the positioning hole, providing guidance and limiting for the connection between the back cover and the motor housing, effectively avoiding misalignment and improving the accuracy of the connection between the back cover and the motor housing. Attached Figure Description

[0013] The advantages of the present invention, as described above and / or in the following detailed description in conjunction with the accompanying drawings, will become clearer and more readily understood. These drawings are merely illustrative and do not limit the scope of the present invention.

[0014] Figure 1 This is a schematic diagram of a motor according to one embodiment of the present invention;

[0015] Figure 2 This is one embodiment of the present utility model. Figure 1 A magnified view of point A in the middle;

[0016] Figure 3 This is a three-dimensional schematic diagram of a stepped block according to an embodiment of the present invention;

[0017] Figure 4 This is a three-dimensional schematic diagram of an annular extrusion block and a concave sealing ring according to an embodiment of the present invention.

[0018] The attached diagram lists the components represented by each number as follows:

[0019] 1. Motor housing; 2. Rear cover; 3. Stepped groove; 4. Stepped block; 5. Annular groove; 6. O-ring seal; 7. Annular extrusion block; 8. Rectangular cavity; 9. Concave sealing ring; 10. Locating pin; 11. Locating hole. Detailed Implementation

[0020] In the following description, embodiments of the novel HMM cycloidal hydraulic motor of this invention will be presented with reference to the accompanying drawings.

[0021] Figure 1-4 This invention illustrates a novel structure of an HMM cycloidal hydraulic motor according to an embodiment of the present invention. The motor includes a motor housing 1, a rear cover 2 at the bottom of the motor housing 1, a stepped groove 3 at the bottom of the motor housing 1, and multiple stepped blocks 4 adapted to the stepped groove 3 fixedly connected to the top of the rear cover 2. An annular groove 5 is formed at the top of the inner cavity of the stepped groove 3, and an O-ring seal 6 is installed in the inner cavity of the annular groove 5. The tops of the stepped blocks 4 abut against the O-ring seal 6. An annular pressing block 7 is fixedly connected to the top of the rear cover 2. A rectangular cavity 8 is formed at the bottom of the motor housing 1, and a concave seal 9 is installed in the inner cavity of the rectangular cavity 8. The annular pressing block 7 extends into the inner cavity of the concave seal 9. The cross-section is an isosceles trapezoid, and the cross-section of the inner cavity of the concave sealing ring 9 is rectangular. Multiple positioning pins 10 are fixedly connected to the top of the rear cover 2. The positioning pins 10 are located between the annular extrusion block 7 and the stepped block 4. The bottom of the motor housing 1 is provided with positioning holes 11 that are adapted to the positioning pins 10. The length of the positioning pins 10 is longer than the height of the annular extrusion block 7 and the stepped block 4. Through the cooperation of the positioning pins 10 and the positioning holes 11, when the rear cover 2 is docked with the motor housing 1, the positioning pins 10 on the rear cover 2 will first insert into the inner cavity of the positioning holes 11, providing guidance and limiting for the docking of the rear cover 2 and the motor housing 1, effectively avoiding misalignment and improving the accuracy of the docking of the rear cover 2 and the motor housing 1.

[0022] Working principle: When using this utility model, an O-ring seal 6 is installed in the inner cavity of the annular groove 5. The back cover 2 is lifted so that the positioning pin 10 is inserted into the inner cavity of the positioning hole 11 to limit the back cover 2. Then, the step block 4 is inserted into the inner cavity of the step groove 3. The step block 4 squeezes the O-ring seal 6 in the inner cavity of the annular groove 5, causing the O-ring seal 6 to deform in the inner cavity of the annular groove 5. The two O-ring seals 6 in the inner cavity of the step groove 3 achieve a step-like sealing effect. Moreover, the concave seal 9 installed in the inner cavity of the rectangular cavity 8 is inserted by the annular extrusion block 7. The concave seal 9 will expand outward due to the shape of the annular extrusion block 7. The concave seal 9 will deform and perform extrusion deformation sealing at the connection between the motor housing 1 and the back cover 2, thus achieving multiple seals.

[0023] In summary, this novel HMM cycloidal hydraulic motor, by inserting an O-ring 6 into the inner cavity of the annular groove 5, and then inserting a stepped block 4 into the inner cavity of the stepped groove 3, causes the O-ring 6 to deform within the annular groove 5, achieving a stepped sealing effect. Furthermore, the concave sealing ring 9 installed within the rectangular cavity 8 is inserted by the annular extrusion block 7, causing the concave sealing ring 9 to deform and provide a compression-type seal at the connection between the motor housing 1 and the rear cover 2. This achieves a multi-layered sealing structure using both stepped and compression-type features, enabling the hydraulic motor to better seal under high-pressure operating conditions, improving the reliability of mechanical equipment, and reducing maintenance costs.

Claims

1. A novel HMM cycloidal hydraulic motor, characterized in that, The device includes a motor housing (1), a rear cover (2) is provided below the motor housing (1), a stepped groove (3) is provided at the bottom of the motor housing (1), a plurality of stepped blocks (4) adapted to the stepped groove (3) are fixedly connected to the top of the rear cover (2), an annular groove (5) is provided at the top of the inner cavity of the stepped groove (3), an O-ring seal (6) is installed in the inner cavity of the annular groove (5), the top of the stepped block (4) abuts against the O-ring seal (6), an annular extrusion block (7) is fixedly connected to the top of the rear cover (2), a rectangular cavity (8) is provided at the bottom of the motor housing (1), a concave seal (9) is installed in the inner cavity of the rectangular cavity (8), and the annular extrusion block (7) extends into the inner cavity of the concave seal (9).

2. The novel HMM cycloidal hydraulic motor according to claim 1, characterized in that, The cross-section of the annular extrusion block (7) is an isosceles trapezoid.

3. The novel HMM cycloidal hydraulic motor according to claim 2, characterized in that, The cross-section of the inner cavity of the concave sealing ring (9) is rectangular.

4. The novel HMM cycloidal hydraulic motor according to claim 3, characterized in that, The top of the rear cover (2) is fixedly connected with a plurality of positioning pins (10), the positioning pins (10) being located between the annular extrusion block (7) and the stepped block (4), and the bottom of the motor housing (1) is provided with positioning holes (11) that are compatible with the positioning pins (10).

5. The novel HMM cycloidal hydraulic motor according to claim 4, characterized in that, The length of the positioning pin (10) is longer than the height of the annular extrusion block (7) and the stepped block (4).

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