A rigid segmented blade structure with compensation function

Abstract

The present invention relates to the technical field of vane motors, and in particular to a rigid segmented blade structure with a compensation function, wherein the blades on the main blades automatically come close to the inner surface of a cylinder body through the elasticity of a spring, and the blades are automatically compensated after being worn through the elasticity of the spring, and the inner surface of the cylinder body is automatically aligned through the arc surface of the blades for sealing, and the weight of the split rotor is reduced through a hollow split rotor, and the rotational inertia of the rotor is reduced through a hollow shaft, thereby enhancing the structural compactness of the equipment, reducing the rotational inertia, improving the flexibility, reliability and anti-deformation ability of the equipment, and improving the sealing effect of the equipment for long-term use through automatic compensation after the blades are worn; the structure comprises a cylinder body, a support part and a blade part, and the support part and the blade part are both installed inside the cylinder body.

Description

Technical Field

[0001] The invention relates to the technical field of vane motors, and in particular to a rigid segmented vane structure with a compensation function. Background Art

[0002] The working principle of the vane motor: an eccentric rotor is installed in the cylinder body. Compressed air enters the inner cavity of the motor through the air inlet. The pressure acts on the blades, which drives the rotor to rotate, and then drives the equipment to operate through the output shaft. The blades are limited by the inner wall and the blade grooves on the rotor, so that they can only move in the blade grooves to achieve a sealing effect and prevent air leakage. The vane-type air motor generally has two holes, one for air intake and one for exhaust. The two holes can be interchanged to achieve forward and reverse rotation. As long as the direction is easily controlled by using a common control valve, it is widely used in mining machinery, flammable and explosive liquids and pneumatic tools. The blade is an important part of the vane motor. When the rotor rotates, the top of the blade is close to the inner surface of the motor, so the two adjacent blades, the rotor, and the inner cavity of the motor form a sealed working chamber. During the working cycle, the blades are subjected to large loads and alternating stresses, and the top joint surface is severely worn. At present, in the research and development and manufacturing of high-power pneumatic motors, how to adapt to the roundness error of the cylinder body of high-power motors, how to reduce the rotor inertia, improve the blade strength, reduce the deformation of the blades, improve the sealing effect, and improve the energy conversion efficiency are industry problems that need to be solved urgently. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a blade on a main blade that automatically comes close to the inner surface of the cylinder body through the elasticity of a spring, and the blade is automatically compensated after being worn through the elasticity of the spring, and the inner surface of the cylinder body is automatically aligned through the arc surface of the blade to perform sealing, and the cylinder body processing error is automatically aligned through the segmented blade. A blade is installed on the side of the joint seam between every two adjacent segmented blades to form a staggered segmented blade, which further improves the sealing effect, and reduces the weight of the split rotor through a hollow split rotor, and reduces the rotational inertia of the rotor through a hollow shaft, thereby enhancing the structural compactness of the equipment, reducing the rotational inertia, and improving the flexibility, reliability and anti-deformation ability of the equipment. Through the spiral symmetrical connecting rod layout, the main blade is rigidly installed with a square pin, and the trapezoidal tooth lock buckle in the square pin is rigidly connected to the connecting rod, which further improves the rigidity of the main blade and the balance performance of the rotor. Through automatic compensation after the blade is worn, a rigid segmented blade structure with compensation function is provided to improve the sealing effect of the equipment when used for a long time.

[0004] A rigid segmented blade structure with compensation function of the present invention comprises a cylinder body, a support part and a blade part, wherein the support part and the blade part are both installed inside the cylinder body;

[0005] The support part includes a split rotor, a supporting wall plate, a gland, a rotating shaft, a square pin and a connecting rod. The gland is installed on both sides of the cylinder body. The outer cylindrical surface of the rotating shaft is installed with a supporting wall plate. The split rotor is installed on the outer cylindrical surface of the rotating shaft and the supporting wall plate. The connecting rod passes through the rotating shaft. The split rotor and the rotating shaft are both hollow structures. Square pins are installed at both ends of the connecting rod.

[0006] The blade part includes a segmented blade, a spring and a main blade, symmetrical main blades are installed at both ends of the connecting rod, and the connecting rod is spirally symmetrical, the main blade and the connecting rod are rigidly connected, a slotted portion is provided on the main blade, and the blade is installed at the slotted portion on the upper part of the main blade, and an arc surface is provided at one end of the blade, and the segmented blade and the spring are both installed on the main blade;

[0007] The blades on the main blades automatically come close to the inner surface of the cylinder body through the elasticity of the spring. The elasticity of the spring can automatically compensate for the blade wear. The curved surface of the blade automatically aligns the inner surface of the cylinder body for sealing. The weight of the split rotor is reduced through the hollow split rotor, and the rotational inertia of the rotor is reduced through the hollow shaft, thereby enhancing the compactness of the equipment structure, reducing the rotational inertia, and improving the flexibility, reliability and anti-deformation ability of the equipment. The automatic compensation after blade wear can improve the sealing effect of the equipment for long-term use.

[0008] Preferably, it also includes screws, nuts, locking nuts and tapered roller bearings, the pressure cover is fixed to the cylinder body by screws and nuts, the tapered roller bearing is installed on the pressure cover by locking nuts, and the rotating shaft is eccentrically fixed to the pressure cover by tapered roller bearings; by arranging screws, nuts, locking nuts and tapered roller bearings, it is convenient to disassemble and repair the equipment, thereby improving the convenience of maintenance of the equipment.

[0009] Preferably, a guide groove is provided between the split rotor and the supporting wall plate, so as to facilitate the main blades to slide in the guide groove, thereby improving the practicability of the equipment.

[0010] Preferably, it also includes a locking screw, the square pin is fixed to the main blade by the locking screw, and the connecting rod is rigidly fixed to the main blade by the square pin; by setting the locking screw, the rigidity of the square pin connected to the blade support plate is further increased, and the installation and disassembly of the square pin is convenient, thereby improving the convenience of the equipment.

[0011] Preferably, the spring is made of spring steel, which increases the fatigue resistance of the spring and thus improves the service life of the spring.

[0012] Preferably, the rotating shaft is provided with a spline; the spline on the rotating shaft facilitates the connection of the rotating shaft with other devices and drives the operation of other devices, thereby improving the practicability of the equipment.

[0013] Preferably, the blades on the main blades are made of lightweight, high-strength, wear-resistant materials such as high-hardness aluminum or carbon fiber composite materials; the wear of the blades on the main blades is reduced, thereby improving the sealing effect and service life of the equipment.

[0014] Preferably, a trapezoidal tooth lock buckle is provided on the connecting rod, and a square hole is provided on the main blade; the trapezoidal tooth lock buckle on the connecting rod and the square hole on the main blade limit the square pin, thereby realizing a detachable rigid connection among the connecting rod, square pin and blade support rod, thereby improving the stability of the equipment.

[0015] Preferably, the segmented blades are all installed in a symmetrical staggered manner to reduce gas leakage, thereby improving the sealing effect of the equipment.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the blades on the main blades automatically come close to the inner surface of the cylinder body through the elasticity of the spring, and the blades are automatically compensated after being worn through the elasticity of the spring, and the inner surface of the cylinder body is automatically aligned through the arc surface of the blades to perform sealing, and the cylinder body processing error is automatically aligned through the segmented blades. Blades are installed on the side of the joint seam between every two adjacent segmented blades to form staggered segmented blades, which further improves the sealing effect, and the weight of the split rotor is reduced through the hollow split rotor, and the rotational inertia of the rotor is reduced through the hollow shaft, thereby enhancing the structural compactness of the equipment, reducing the rotational inertia, and improving the flexibility, reliability and anti-deformation ability of the equipment. Through the spiral symmetrical connecting rod layout, the main blades are rigidly installed with square pins, and the trapezoidal tooth lock buckle in the square pin is rigidly connected to the connecting rod, which further improves the rigidity of the main blades and the balance performance of the rotor, and the sealing effect of the equipment after long-term use is improved through automatic compensation after blade wear.

[0017] The present invention integrates automatic compensation function with rigid segmented blades, has compact structure, small moment of inertia, flexible and reliable movement, strong anti-deformation ability, high strength, low cost, automatic compensation after wear, good sealing effect, and has good promotion and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the axonometric structure of the present invention;

[0019] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention;

[0020] Figure 3 It is a left-side cross-sectional structural schematic diagram of the present invention;

[0021] Figure 4 It is an axonometric structural diagram of the structure of the rotating shaft and main blades of the present invention;

[0022] Figure 5 It is an axonometric structural diagram of the structure of the rotating shaft and connecting rod etc. of the present invention;

[0023] Figure 6 The present invention Figure 3 Schematic diagram of the enlarged structure of part C;

[0024] Figure 7 The present invention Figure 2 Schematic diagram of the enlarged structure of the D part;

[0025] Figure 8 The present invention Figure 1 Schematic diagram of the enlarged structure of part E in FIG.

[0026] Fig. 9 The present invention Figure 4 Schematic diagram of the enlarged structure of part F;

[0027] Fig.10 The present invention Figure 5 Schematic diagram of the enlarged structure of the G part;

[0028] Fig.11 The present invention Figure 5 Schematic diagram of the enlarged structure of the H part;

[0029] Markings in the attached figure: 1. cylinder body; 2. split rotor; 3. screw; 4. nut; 5. supporting wall panel; 6. pressure cover; 7. locking nut; 8. rotating shaft; 9. tapered roller bearing; 10. segmented blade; 11. square pin; 12. connecting rod; 13. countersunk screw; 14. spring; 15. set screw; 16. main blade. DETAILED DESCRIPTION

[0030] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0031] Example 1

[0032] The support part and the blade part are both installed inside the cylinder body 1;

[0033] The support part includes a split rotor 2, a support wall plate 5, a gland 6, a rotating shaft 8, a square pin 11 and a connecting rod 12. Figure 2 As shown, the gland 6 is installed on both sides of the cylinder body 1 by means of screws 3 and nuts 4, the outer circumference of the shaft 8 is installed with a supporting wall plate 5, the split rotor 2 is installed on the outer circumference of the shaft 8 and the supporting wall plate 5, and as shown in FIG. Figure 1 , Figure 4 and Figure 5 As shown, the shaft 8 is provided with a spline, the connecting rod 12 passes through the shaft 8, and the split rotor 2 and the shaft 8 are both hollow structures. Figure 7As shown, the two ends of the connecting rod 12 are mounted with square pins 11 through set screws 15. Figure 4 , Fig. 9 , Fig.10 and Fig.11 As shown, a trapezoidal tooth lock buckle is provided on the connecting rod 12, and a square hole is provided on the main blade 16 to facilitate the limiting of the opposite pin; the blade part includes a segmented blade 10, a spring 14 and a main blade 16, symmetrical main blades 16 are installed at both ends of the connecting rod 12, and the connecting rod 12 is spirally symmetrical, the main blade 16 and the connecting rod 12 are rigidly connected, a groove is provided on the main blade 16, and a blade is installed at the upper groove of the main blade 16, and an arc surface is provided at one end of the blade, and the segmented blade 10 and the spring 14 are both installed on the main blade 16; the blade on the main blade 16 automatically approaches the inner surface of the cylinder body 1 through the elasticity of the spring 14, and the blade is automatically compensated after wear through the elasticity of the spring 14, and the cylinder body 1 is automatically aligned through the arc surface of the blade The inner surface is sealed, and the processing error of the cylinder body 1 is automatically aligned through the segmented blades 10. The blades are installed on the side of the joint between every two adjacent segmented blades 10 to form staggered segmented blades 10, which further improves the sealing effect. The weight of the split rotor 2 is reduced through the hollow split rotor 2, and the rotational inertia of the rotor is reduced through the hollow shaft 8, thereby enhancing the structural compactness of the equipment, reducing the rotational inertia, and improving the flexibility, reliability and anti-deformation ability of the equipment. Through the layout of the spiral symmetrical connecting rod 12, the main blade 16 is rigidly installed with a square pin, and the trapezoidal tooth lock buckle in the square pin 11 is rigidly connected to the connecting rod 12, which further improves the rigidity of the main blade 16 and the balance performance of the rotor 2. Through automatic compensation after blade wear, the sealing effect of the equipment after long-term use is improved.

[0034] The main functions achieved by the present invention are: automatically compensating for worn blades, automatically aligning the inner surface of the cylinder body 1 through the arc surface of the blades, thereby improving the sealing effect of the equipment, reducing the weight of the equipment and the inertia of the equipment rotation through the hollow split rotor 2 and the rotating shaft 8, improving the convenience of equipment installation and maintenance through the fixation of parts such as screws 3 and nuts 4, reducing the wear of the blades, increasing the stability of the square pin 11, and increasing the service life of the equipment.

[0035] The present invention is a blade for a high-power motor, which is designed with a rigid symmetrical main blade and an automatic compensation, segmented symmetrical double-layer arc-top blade structure. Traditional pneumatic motors have low power, and the blades are symmetrically separated structures, with a single blade as a whole. In high-power motors, the machining error of the inner wall of the motor cylinder is large, and the blade power, force area, and extension area are large, resulting in the blades being easily deformed under high pressure, and higher requirements are placed on the rigidity, strength, and sealing performance of the blades; high-power rotors are difficult to machine, with large machining errors and large centrifugal forces; traditional blade structures cannot be used in high-power motors.

[0036] The present invention breaks the limitations of traditional structures and designs a separate structure of blades and main blades, rigidly symmetrical main blades, spirally symmetrical connecting rods, automatic compensation, and segmentally symmetrical double-layer arc-top blades. In addition to the advantages that traditional blades cannot achieve, it has the advantages of compact structure, small moment of inertia, flexible and reliable movement, strong anti-deformation ability, high strength, low cost, automatic compensation after wear, and high energy conversion efficiency.

[0037] The rigid segmented blade structure with compensation function of the present invention has common mechanical installation, connection or setting methods, which can be implemented as long as they can achieve beneficial effects. Technical personnel in the industry only need to install and operate it according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0038] All technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0039] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rigid segmented blade structure with compensation function, characterized in that: It comprises a cylinder body (1), a support part and a blade part, wherein the support part and the blade part are both installed inside the cylinder body (1); The support part comprises a split rotor (2), a supporting wall plate (5), a gland (6), a rotating shaft (8), a square pin (11) and a connecting rod (12); the gland (6) is mounted on both sides of the cylinder body (1); the supporting wall plate (5) is mounted on the outer cylindrical surface of the rotating shaft (8); the split rotor (2) is mounted on the outer cylindrical surface of the rotating shaft (8) and the supporting wall plate (5); the connecting rod (12) passes through the rotating shaft (8); the split rotor (2) and the rotating shaft (8) are both hollow structures; and the two ends of the connecting rod (12) are both mounted with square pins (11); The blade part comprises a segmented blade (10), a spring (14) and a main blade (16); symmetrical main blades (16) are mounted at both ends of a connecting rod (12); the connecting rod (12) is spirally symmetrical; the main blade (16) and the connecting rod (12) are rigidly connected; a slotted portion is provided on the main blade (16); a blade is mounted on the upper slotted portion of the main blade (16); and a curved surface is provided at one end of the blade; the segmented blade (10) and the spring (14) are both mounted on the main blade (16).

2. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: It also includes screws (3), nuts (4), locking nuts (7) and tapered roller bearings (9); the gland (6) is fixed to the cylinder body (1) via the screws (3) and nuts (4); the tapered roller bearings (9) are mounted on the gland (6) via the locking nuts (7); and the rotating shaft (8) is eccentrically fixed to the gland (6) via the tapered roller bearings (9).

3. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: A guide groove is provided between the split rotor (2) and the supporting wall plate (5).

4. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: It also includes a set screw (15), the square pin (11) is fixed to the main blade (16) via the set screw (15), and the connecting rod (12) is rigidly fixed to the main blade (16) via the square pin (11).

5. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: The spring (14) is made of spring steel.

6. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: The rotating shaft (8) is provided with a spline.

7. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: The blades on the main blades (16) are made of lightweight, high-strength, wear-resistant materials such as high-hardness aluminum or carbon fiber composite materials.

8. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: The connecting rod (12) is provided with a trapezoidal tooth lock buckle, and the main blade (16) is provided with a square hole.

9. A rigid segmented blade structure with compensation function as claimed in claim 1, characterized in that: The segmented blades (10) are all installed in a symmetrical staggered manner.

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