A blade mounting structure for an eccentrically movable blade type pneumatic motor

Abstract

This utility model relates to the field of pneumatic tool technology, and in particular to a blade mounting structure for an eccentric movable vane pneumatic motor. The utility model mainly consists of a stator, rotor, radial groove, first permanent magnet, spring, second permanent magnet, blade, oil guide block, and wear-resistant rubber block. These components work together. By adding a first and second permanent magnet, capable of generating repulsive force, to the radial groove of the rotor, the reliability of the reciprocating radial displacement of the blade is ensured in conjunction with the spring. An oil storage chamber is provided in the blade to store lubricating oil. A wear-resistant rubber block is installed on the outer end of the blade via a snap-fit ​​oil guide block. The oil guide groove in the oil guide block directs the oil from the storage chamber into the wear-resistant rubber block. The oil-soaked wear-resistant rubber block replaces the blade in contact with the inner wall of the stator. The wear-resistant rubber block has self-deformation capability, preventing damage when in contact with the inner wall of the stator. Simultaneously, the lubricating oil further enhances the lubrication effect.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic tool technology, and in particular to a blade mounting structure for an eccentric movable blade pneumatic motor. Background Technology

[0002] Eccentric movable vane pneumatic motors have a wide range of applications, mainly in the following aspects: 1) Industrial applications: Eccentric movable vane pneumatic motors are commonly used in mining vehicle drives, such as mining trucks, excavators, mining hoists, and mining drilling rigs. Their high efficiency, reliability, and adaptability to harsh working conditions enable these devices to achieve precise operation and high efficiency in mining environments. In addition, they are also used in mixing equipment, conveyor belt drives, pump drives, food packaging, pharmaceutical packaging, cranes and winches, hose reels, fiber cutting, tension devices, rotary tables, filling equipment, fan drives, crushers, grinders, lifting equipment, and mining equipment, etc. 2) Safety and adaptability: Eccentric movable vane pneumatic motors are safe to operate, unaffected by vibration, high temperature, electromagnetic fields, radiation, etc., and are suitable for harsh working environments. They can operate normally under adverse conditions such as flammable, explosive, high temperature, vibration, humidity, and dust. This allows them to be used safely in hazardous locations such as petroleum and chemical plants. 3) Functional characteristics: The eccentric movable vane pneumatic motor features stepless speed regulation, high starting torque, robust design, and instantaneous forward and reverse rotation. These characteristics enable it to meet the needs of various complex working conditions, such as applications requiring rapid start-up, frequent reversal, or load-based start-up.

[0003] The existing blade mounting structure of eccentric movable vane pneumatic motors has shortcomings. First, it relies solely on the restoring force of springs to achieve radial displacement of the blades on the rotor, resulting in unsatisfactory reliability of the displacement. Second, the lack of lubrication between the blades and the stator easily leads to wear between the blade edges and the inner wall of the stator. Therefore, it is necessary to optimize and improve the existing blade mounting structure of eccentric movable vane pneumatic motors. Summary of the Invention

[0004] The purpose of this invention is to overcome the aforementioned problems in traditional technology and provide a blade mounting structure for an eccentric movable blade pneumatic motor.

[0005] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0006] A blade mounting structure for an eccentric movable vane pneumatic motor includes an eccentrically mounted stator and rotor. The rotor has multiple radial grooves along its circumference. A first permanent magnet is mounted at the inner end of each radial groove. A blade slides and is constrained within the radial groove. A second permanent magnet capable of generating a repulsive force with the first permanent magnet is mounted at the inner end of each blade. A spring is installed between the first and second permanent magnets. An oil guide block is snapped onto the outer end of each blade. The outer side of the oil guide block is covered with a wear-resistant rubber block.

[0007] The blade includes a straight plate portion and a horn portion located at its outer end. The straight plate portion has an oil storage cavity inside. The horn portion has a protrusion at its outer end. The outer end of the protrusion has a snap-fit ​​groove that facilitates snapping the oil guide block. The oil storage cavity and the snap-fit ​​groove are interconnected. The oil guide block has an oil guide groove that facilitates guiding the oil in the oil storage cavity into the wear-resistant rubber block.

[0008] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the stator is provided with stator hole A, stator hole B and stator hole C.

[0009] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the stator has sealing caps at both ends, and the sealing caps are provided with arc-shaped grooves that communicate with stator holes A, B and C.

[0010] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the rotor is provided with six radial grooves along the circumference.

[0011] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the outer end of the radial slide groove is provided with a horn groove structure that mates with the horn section.

[0012] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the outer side of the oil guide block is provided with a snap-fit ​​positioning groove, and the blade is provided with a snap-fit ​​positioning protrusion on the inner wall of the snap-fit ​​groove. The snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove cooperate with each other.

[0013] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the oil guide block is made of plastic material, which can be forcibly snapped into the snap-fit ​​groove so that the snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove engage with each other.

[0014] Furthermore, in the blade mounting structure of the above-mentioned eccentric movable vane pneumatic motor, the wear-resistant rubber block is made of nitrile rubber and thermoplastic polyurethane, which are capable of absorbing oil.

[0015] The beneficial effects of this utility model are:

[0016] This utility model features a rationally designed blade mounting structure, primarily composed of a stator, rotor, radial groove, first permanent magnet, spring, second permanent magnet, blade, oil guide block, and wear-resistant rubber block. These components work in concert. Firstly, by adding a first and second permanent magnet capable of generating repulsive force within the radial groove of the rotor, the spring and the blade's reciprocating radial displacement are reliably ensured. Secondly, an oil reservoir is provided within the blade to store lubricating oil. A wear-resistant rubber block is installed at the outer end of the blade via a snap-fit ​​oil guide block. The oil guide groove in the oil guide block directs the oil from the reservoir into the wear-resistant rubber block. The oil-soaked wear-resistant rubber block replaces the blade in contact with the stator's inner wall. The wear-resistant rubber block possesses self-deformation capability, preventing damage when in contact with the stator's inner wall. Simultaneously, the lubricating oil further enhances the lubrication effect.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the above advantages at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the stator structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the rotor structure in this utility model;

[0022] Figure 4 This is an assembly diagram of the blades, oil guide block, and wear-resistant rubber block in this utility model;

[0023] Figure 5 This is a schematic diagram of the blade structure in this utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the oil guide block and the wear-resistant rubber block in this utility model;

[0025] In the attached diagram, the components represented by each number are as follows:

[0026] 1-Stator, 2-Rotor, 3-Radial groove, 4-First permanent magnet, 5-Spring, 6-Second permanent magnet, 7-Blade, 701-Straight plate section, 702-Bell section, 703-Oil storage chamber, 704-Protrusion, 705-Snap-fit ​​groove, 8-Oil guide block, 9-Wear-resistant rubber block. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-6 As shown, this embodiment provides a blade mounting structure for an eccentric movable vane pneumatic motor, including an eccentrically mounted stator 1 and rotor 2. The stator 1 has stator holes A101, B102, and C103. Both ends of the stator 1 have sealing caps, and the sealing caps have arc-shaped grooves communicating with stator holes A101, B102, and C103.

[0029] In this embodiment, the rotor 2 has multiple radial grooves 3 along its circumference. A first permanent magnet 4 is installed at the inner end of the radial groove 3. A blade 7 slides and is restricted within the radial groove 3. A second permanent magnet 6, capable of generating a repulsive force with the first permanent magnet 4, is installed at the inner end of the blade 7. A spring 5 is installed between the first permanent magnet 4 and the second permanent magnet 6. An oil guide block 8 is snapped onto the outer end of the blade 7. The outer side of the oil guide block 8 is covered with a wear-resistant rubber block 9.

[0030] In this embodiment, the blade 7 includes a straight plate portion 701 and a horn portion 702 located at its outer end. The straight plate portion 701 has an oil storage cavity 703 inside, and the horn portion 702 has a protrusion 704 at its outer end. The outer end of the protrusion 704 has a snap-fit ​​groove 705 that facilitates snapping the oil guide block 8. The oil storage cavity 703 and the snap-fit ​​groove 705 are interconnected. The oil guide block 8 has an oil guide groove that facilitates guiding the oil in the oil storage cavity 703 into the wear-resistant rubber block 9.

[0031] In this embodiment, the rotor 2 has six radial grooves 3 along the circumference.

[0032] In this embodiment, the outer end of the radial groove 3 is provided with a horn groove structure that cooperates with the horn part 702.

[0033] In this embodiment, the outer side of the oil guide block 8 is provided with a snap-fit ​​positioning groove, and the blade 7 is provided with a snap-fit ​​positioning protrusion on the inner wall of the snap-fit ​​groove 705. The snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove cooperate with each other.

[0034] In this embodiment, the oil guide block 8 is made of plastic material, which can be forcibly snapped into the snap-fit ​​groove 705 so that the snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove engage with each other.

[0035] In this embodiment, the wear-resistant rubber block 9 is made of nitrile rubber and thermoplastic polyurethane, which can absorb oil. Depending on the requirements, several oil-absorbing micropores can be opened on the wear-resistant rubber block 9.

[0036] The specific application of this embodiment is as follows: This blade mounting structure mainly consists of a stator 1, a rotor 2, a radial groove 3, a first permanent magnet 4, a spring 5, a second permanent magnet 6, a blade 7, an oil guide block 8, and a wear-resistant rubber block 9. The components work together to ensure the reliability of the reciprocating radial displacement of the blade 7. On the one hand, by adding a first permanent magnet 4 and a second permanent magnet 6 that can generate repulsive force in the radial groove 3 of the rotor 2, the blade 7 can be reliably ensured together with the spring 5. On the other hand, an oil storage cavity 703 is provided in the blade 7 to store lubricating oil. A wear-resistant rubber block 9 is installed on the oil guide block 8 that is snapped onto the outer end of the blade 7. The oil guide groove in the oil guide block 8 can guide the oil in the oil storage cavity 703 into the wear-resistant rubber block 9. The oil-immersed wear-resistant rubber block 9 replaces the blade 7 in contact with the inner wall of the stator 1. The wear-resistant rubber block 9 has self-deformation capability and will not be damaged when in contact with the inner wall of the stator 1. At the same time, the lubricating oil further improves the lubrication effect.

[0037] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to specific implementation methods. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A blade mounting structure for an eccentrically mounted movable vane pneumatic motor, comprising an eccentrically mounted stator and rotor, wherein the rotor has a plurality of radial grooves along its circumference, characterized in that, The inner end of the radial groove is equipped with a first permanent magnet, and a blade is slidably limited in the radial groove. The inner end of the blade is equipped with a second permanent magnet that can generate a repulsive force with the first permanent magnet. A spring is installed between the first permanent magnet and the second permanent magnet. An oil guide block is snapped onto the outer end of the blade, and the outer side of the oil guide block is covered with a wear-resistant rubber block. The blade includes a straight plate portion and a horn portion located at its outer end. The straight plate portion has an oil storage cavity inside. The horn portion has a protrusion at its outer end. The outer end of the protrusion has a snap-fit ​​groove that facilitates snapping the oil guide block. The oil storage cavity and the snap-fit ​​groove are interconnected. The oil guide block has an oil guide groove that facilitates guiding the oil in the oil storage cavity into the wear-resistant rubber block.

2. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 1, characterized in that, The stator has stator holes A, B and C.

3. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 2, characterized in that, The stator has sealing caps at both ends, and the sealing caps are provided with arc-shaped grooves that communicate with stator holes A, B and C.

4. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 1, characterized in that, The rotor has six radial grooves along its circumference.

5. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 1, characterized in that, The outer end of the radial groove is provided with a horn groove structure that mates with the horn section.

6. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 1, characterized in that, The outer side of the oil guide block is provided with a snap-fit ​​positioning groove, and the blade is provided with a snap-fit ​​positioning protrusion on the inner wall of the snap-fit ​​groove. The snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove cooperate with each other.

7. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 6, characterized in that, The oil guide block is made of plastic material and can be forcibly snapped into the snap-fit ​​groove so that the snap-fit ​​positioning protrusion and the snap-fit ​​positioning groove engage with each other.

8. The blade mounting structure of an eccentric movable vane pneumatic motor according to claim 1, characterized in that, The wear-resistant rubber block is made of nitrile rubber and thermoplastic polyurethane, which are capable of absorbing oil.

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