Special gear type pneumatic motor for pneumatic hoist

Abstract

The utility model discloses a special gear-type pneumatic motor for a pneumatic hoist, which belongs to the field of gear-type pneumatic motors and comprises a gear-type pneumatic motor body, an arranged filter mechanism is matched with the gear-type pneumatic motor body for use, and when compressed air enters the gear-type pneumatic motor body through an air inlet, the filter mechanism can filter the compressed air. Iron impurities such as rust carried in compressed air can be magnetically adsorbed and filtered through the magnetic rod according to the structural characteristics of a magnetic material, and other particulate matter impurities carried in the compressed air can be filtered and intercepted through the filter holes formed in the outer wall of the inner filter cylinder. Therefore, impurities can be effectively prevented from entering the gear-type pneumatic motor body, abrasion is reduced, the service life of the gear-type pneumatic motor body is prolonged, normal movement and working performance of the gear-type pneumatic motor body is ensured, the fault occurrence rate of the gear-type pneumatic motor body is reduced, and the service life of the gear-type pneumatic motor body is prolonged. And the maintenance frequency and the maintenance cost are reduced.

Description

Technical Field

[0001] This utility model relates to the field of gear-type pneumatic motors, and in particular to a gear-type pneumatic motor specifically for pneumatic hoists. Background Technology

[0002] A gear-type pneumatic motor specifically designed for pneumatic hoists is a power device that converts the pressure energy of compressed air into rotational mechanical energy. It uses compressed air to drive a gear, which in turn drives the hoist's drum to raise and lower the hook. This type of motor has advantages such as compact structure, light weight, low requirements for air quality, impact resistance, and low inertia. It can adapt to different workloads and air intake conditions, ensuring stable operation of the pneumatic hoist under various working conditions. Furthermore, the gear-type pneumatic motor also has forward and reverse rotation capabilities, making the operation of the pneumatic hoist more flexible and convenient.

[0003] In existing technology, when a gear-type pneumatic motor drives a pneumatic hoist, it needs compressed air to rotate the internal gears. However, when compressed air enters the gear-type pneumatic motor through the air inlet, various impurities, such as rust and larger particles, are mixed in during the production and transportation process. If these impurities directly enter the pneumatic motor, they will impact and rub against the high-speed rotating precision parts such as gears and blades, accelerating the wear of the parts, reducing the surface precision of the parts, shortening their service life, and thus affecting their normal movement and working performance. This can even cause malfunctions such as jamming, and increase the maintenance frequency and cost. Utility Model Content

[0004] The main objective of this invention is to provide a gear-type pneumatic motor specifically for pneumatic hoists, which can effectively solve the problems in the background technology.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A gear-type pneumatic motor for pneumatic hoists includes a gear-type pneumatic motor body. The bottom surface of the gear-type pneumatic motor body is provided with an air inlet and an air outlet. The bottom end of the air inlet is provided with a filter mechanism, which includes a filter tube, an inner filter cylinder, a magnetic roller, a connecting ring, a guide rod, a spring, a movable block, and a latch. The filter tube is fixedly connected to the bottom end of the air inlet, and the magnetic roller is fixedly connected to the inside of the inner filter cylinder through a short threaded rod at the top. The inner filter cylinder is fixedly connected to the filter tube through a connecting ring on the outer wall. A set of symmetrical guide rods are fixedly connected to the bottom two sides of the connecting ring. The spring is sleeved on the outside of the guide rod, and the movable block is movably connected to the guide rod through the connecting blocks on both sides and fixedly connected to one end of the spring. The latch is fixedly connected to the side wall of the movable block.

[0007] Furthermore, the filter tube is fixedly installed on the bottom surface of the air inlet, and positioning holes are respectively opened on the left and right sides of the bottom inner wall of the filter tube, and clamping cavities are respectively opened on the front and rear sides of the bottom inner wall of the filter tube.

[0008] Furthermore, the top surface of the inner filter cylinder is provided with a screw hole, and the outer wall of the inner filter cylinder is provided with a number of filter holes. A threaded short rod is fixedly installed at the top of the magnetic roller, and the threaded short rod is threadedly connected to the screw hole.

[0009] Furthermore, the connecting ring is fixedly installed at the bottom of the outer wall of the inner filter cylinder, and a set of symmetrical positioning protrusions corresponding to the positioning port are fixedly installed on the outer wall of the connecting ring.

[0010] Furthermore, the bottom surface of the connecting ring is provided with a set of symmetrical notches, and grooves are provided on the left and right side walls inside the notches.

[0011] Furthermore, the guide rod is fixedly installed in the groove, and the spring is sleeved on the outside of the guide rod. One end of the spring is fixedly installed with one end wall of the groove. Connecting blocks are fixedly installed on the left and right side walls of the movable block, and a guide hole is opened on the front wall of the connecting block. The connecting block is movably installed with the guide rod through the guide hole, and the other end of the spring is fixedly installed with the movable block. A latch corresponding to the latch cavity is fixedly installed on the outer side wall of the movable block, and the latch is inserted into the latch cavity. A pressing block is also fixedly installed on the bottom surface of the movable block.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this utility model, the filter mechanism, in conjunction with the gear-type pneumatic motor, fixes the magnetic roller inside the inner filter cartridge via a threaded short rod. Then, it presses the symmetrical pressing block on the bottom of the connecting ring in the opposite direction until the latch enters the notch. The inner filter cartridge is then positioned and installed inside the filter tube by the positioning protrusion on the outer wall of the connecting ring. Releasing the pressing force on the pressing block allows the spring to elastically recover and extend. This pushes the connecting block, causing it to move through the guide hole along the guide rod in the groove, and drives the movable block to move in the notch until the latch is inserted into the locking cavity. This facilitates the installation and fixing of the inner filter cartridge inside the filter tube for use, and makes it easy to remove the inner filter cartridge from the filter tube for cleaning impurities.

[0014] When compressed gas enters the geared pneumatic motor body through the air inlet, the magnetic roller, based on its magnetic material structure, magnetically adsorbs and filters ferrous impurities such as rust carried in the compressed gas. Furthermore, the filter holes on the outer wall of the inner filter cartridge filter out other particulate impurities carried in the compressed air. This effectively prevents impurities from entering the interior of the geared pneumatic motor body, reducing wear and extending its service life. Ultimately, this ensures the normal movement and working performance of the geared pneumatic motor body, reducing not only the failure rate of the geared pneumatic motor body but also the frequency and cost of maintenance. Attached Figure Description

[0015] Figure 1 This is a top view of the overall structure of this utility model;

[0016] Figure 2 This is a bottom view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall structure of the filter tube of this utility model;

[0018] Figure 4 This is a structurally disassembled schematic diagram of the filtration mechanism of this utility model;

[0019] Figure 5 This is a structural disassembly diagram of the connecting ring of this utility model.

[0020] In the diagram: 1. Gear-type pneumatic motor body; 2. Air inlet; 3. Air outlet; 4. Filter mechanism; 5. Filter tube; 6. Positioning port; 7. Clamping cavity; 8. Inner filter cartridge; 9. Screw hole; 10. Filter hole; 11. Magnetic roller; 12. Threaded short rod; 13. Connecting ring; 14. Positioning protrusion; 15. Notch; 16. Groove; 17. Guide rod; 18. Spring; 19. Movable block; 20. Connecting block; 21. Guide hole; 22. Clamping tongue; 23. Pressing block. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 - Figure 5As shown, a gear-type pneumatic motor for pneumatic hoists includes a gear-type pneumatic motor body 1. The bottom surface of the gear-type pneumatic motor body 1 is provided with an air inlet 2 and an air outlet 3. The bottom end of the air inlet 2 is provided with a filter mechanism 4, and the filter mechanism 4 includes a filter tube 5, an inner filter cylinder 8, a magnetic roller 11, a connecting ring 13, a guide rod 17, a spring 18, a movable block 19, and a latch 22. The filter tube 5 is fixedly connected to the bottom end of the air inlet 2, and the magnetic roller 11 is fixedly connected to the inside of the inner filter cylinder 8 through a threaded short rod 12 at the top end. The inner filter cylinder 8 is fixedly connected to the filter tube 5 through the connecting ring 13 on the outer wall. A set of symmetrical guide rods 17 are fixedly connected to the bottom two sides of the connecting ring 13, and the spring 18 is sleeved on the outside of the guide rod 17. The movable block 19 is movably connected to the guide rod 17 through the connecting blocks 20 on both sides and fixedly connected to one end of the spring 18. The latch 22 is fixedly connected to the side wall of the movable block 19.

[0023] like Figure 3 As shown, the filter tube 5 is fixedly installed on the bottom surface of the air inlet 2, and positioning ports 6 are respectively opened on the left and right sides of the bottom inner wall of the filter tube 5. The front and rear sides of the bottom inner wall of the filter tube 5 are also respectively opened with clamping cavities 7. The filter tube 5 is fixedly connected to the bottom of the air inlet 2, serving as the outer shell of the entire filtration mechanism, providing installation space for the internal filtration components, and guiding compressed air into the inner filter cartridge 8 for filtration. At the same time, the positioning ports 6 and clamping cavities 7 opened on the bottom inner wall of the filter tube 5 are used to position and fix the inner filter cartridge 8.

[0024] like Figure 4 As shown, the top surface of the inner filter cylinder 8 is provided with a screw hole 9, and the outer wall of the inner filter cylinder 8 is provided with several filter holes 10. When compressed air enters the filter tube 5, it will enter the interior of the inner filter cylinder 8. During this process, larger particles of impurities are blocked and filtered in the inner filter cylinder 8 by the filter holes 10, thus achieving the filtration of impurities. The top end of the magnetic rod 11 is fixedly installed with a threaded short rod 12, and the threaded short rod 12 is threadedly connected to the screw hole 9. Since the magnetic rod 11 is magnetic, when compressed air enters the filter cylinder 8, the ferromagnetic impurities in it will be attracted by the magnetic rod 11, thereby further purifying the compressed air.

[0025] like Figure 4 As shown, the connecting ring 13 is fixedly installed at the bottom of the outer wall of the inner filter cartridge 8, and a set of symmetrical positioning protrusions 14 corresponding to the positioning port 6 are fixedly installed on the outer wall of the connecting ring 13. When installing the inner filter cartridge 8, the positioning protrusions 14 are aligned with the positioning port 6 and inserted to play a preliminary positioning role for the inner filter cartridge 8, ensuring the correct installation position of the inner filter cartridge 8 in the filter tube 5, and avoiding problems such as insufficient filtration or air leakage due to improper installation position of the inner filter cartridge 8.

[0026] like Figure 4 and Figure 5As shown, the bottom surface of the connecting ring 13 is also provided with a set of symmetrical notches 15, and grooves 16 are respectively provided on the left and right side walls inside the notches 15.

[0027] like Figure 4 and Figure 5 As shown, the guide rod 17 is fixedly installed in the groove 16, and the spring 18 is fitted on the outside of the guide rod 17. One end of the spring 18 is fixedly installed to one end wall of the groove 16. Connecting blocks 20 are fixedly installed on the left and right side walls of the movable block 19, and a guide hole 21 is opened on the front wall of the connecting block 20. The connecting block 20 is movably installed to the guide rod 17 through the guide hole 21, and the other end of the spring 18 is fixedly installed to the movable block 19. A latch 22 corresponding to the latch cavity 7 is fixedly installed on the outer side wall of the movable block 19, and the latch 22 is inserted into the latch cavity 7. The bottom surface of the movable block 19 is also fixedly installed with... With a pressing block 23, during installation, the spring 18 is in its natural state, and the latch 22 is inserted into the locking cavity 7 to fix the inner filter cartridge 8 inside the filter tube 5. When it is necessary to remove the inner filter cartridge 8, press the pressing block 23 on the bottom surface of the movable block 19, so that the movable block 19 overcomes the elastic force of the spring 18 and moves inward along the guide rod 17. The latch 22 disengages from the locking cavity 7, and the inner filter cartridge 8 can be removed. This realizes the quick installation and removal of the inner filter cartridge 8, which facilitates the cleaning, replacement and other maintenance operations of the filter assembly. At the same time, under normal working conditions, the cooperation between the latch 22 and the locking cavity 7 can firmly fix the inner filter cartridge 8, ensuring the stability and reliability of the filtration mechanism.

[0028] The specific operating principle of the filter mechanism 4 in conjunction with the gear-type pneumatic motor body 1 is as follows:

[0029] Before actual use, the filter tube 5 is pre-installed at the bottom of the air inlet 2 of the gear-type pneumatic motor body 1. Then, the magnetic roller 11 is installed into the inner filter cylinder 8, so that the threaded short rod 12 at the top of the magnetic roller 11 is threadedly connected to the threaded hole 9 on the top surface of the inner filter cylinder 8. Then, the pressing block 23 symmetrically positioned on the bottom surface of the connecting ring 13 is manually pressed in the opposite direction. The pressing block 23 will drive the movable block 19 to move in the notch 15, and the connecting blocks 20 on both sides of the movable block 19 will pass through the guide hole 21 along the guide rod 17 in the groove 16, and force the spring 18 fitted on the guide rod 17 to tighten. The pressure is maintained on the movable block 19 until the latch 22 installed on the outer wall of the movable block 19 enters the notch 15. The inner filter cartridge 8 is then installed into the filter tube 5. Simultaneously, during installation, the positioning protrusion 14 on the outer wall of the upper connecting ring 13 aligns with the positioning openings 6 on both sides of the inner wall at the bottom of the filter tube 5. This continues until the inner filter cartridge 8 is inserted into the filter tube 5 and the positioning protrusion 14 is fully inserted into the positioning opening 6. Then, the pressure on the pressing block 23 is released, allowing the spring 18 to elastically extend. The connecting block 20 then pushes the movable block 19 into the notch 15. Move the inner filter cartridge 8 from the inside out until the latch 22 is inserted into the corresponding cavity 7 on the inner wall of the bottom end of the filter tube 5. The inner filter cartridge 8 can then be installed and fixed inside the filter tube 5 for use. When compressed gas enters the gear-type pneumatic motor body 1 through the air inlet 2, it will pre-enter the interior of the filter cartridge 8 inside the filter tube 5. At this time, because the magnetic roller 11 installed inside the inner filter cartridge 8 is magnetic, when compressed air enters the filter cartridge 8, the ferromagnetic impurities will be magnetically attracted by the magnetic roller 11, while the remaining larger particles of impurities in the compressed air will block the filter holes 10 on the outer wall of the inner filter cartridge 8. The filter is placed inside the inner filter cartridge 8. Finally, the clean compressed air filtered by the filter mechanism 4 will enter the geared pneumatic motor body 1 through the air inlet 2 and be used by the geared pneumatic motor body 1. This can effectively prevent impurities from entering the interior of the geared pneumatic motor body 1, reduce wear, extend the service life of the geared pneumatic motor body 1, and thus ensure the normal movement and working performance of the geared pneumatic motor body 1. This not only reduces the failure rate of the geared pneumatic motor body 1, but also reduces the maintenance frequency and maintenance cost of the geared pneumatic motor body 1.

[0030] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A gear type pneumatic motor dedicated to a pneumatic hoist, comprising a gear type pneumatic motor body (1), the bottom surface of the gear type pneumatic motor body (1) is respectively provided with an air inlet (2) and an air outlet (3), characterized in that: The bottom end of the air inlet (2) is provided with a filter mechanism (4), and the filter mechanism (4) includes a filter tube (5), an inner filter cylinder (8), a magnetic rod (11), a connecting ring (13), a guide rod (17), a spring (18), a movable block (19), and a latch (22). The filter tube (5) is fixedly connected to the bottom end of the air inlet (2), and the magnetic rod (11) is fixedly connected to the inside of the inner filter cylinder (8) through the threaded short rod (12) at the top end. The inner filter cylinder (8) is fixedly connected to the filter tube (5) through the connecting ring (13) on the outer wall. A set of symmetrical guide rods (17) are fixedly connected to the bottom two sides of the connecting ring (13). The spring (18) is sleeved on the outside of the guide rod (17), and the movable block (19) is movably connected to the guide rod (17) through the connecting blocks (20) on both sides and fixedly connected to one end of the spring (18). The latch (22) is fixedly connected to the side wall of the movable block (19).

2. A gear type pneumatic motor for a pneumatic hoist according to claim 1, characterized in that: The filter tube (5) is fixedly installed on the bottom surface of the air inlet (2), and positioning ports (6) are opened on the left and right sides of the bottom inner wall of the filter tube (5), and clamping cavities (7) are opened on the front and rear sides of the bottom inner wall of the filter tube (5).

3. A gear type pneumatic motor for a pneumatic hoist according to claim 2, characterized in that: The top surface of the inner filter cylinder (8) is provided with a screw hole (9), and a number of filter holes (10) are provided on the outer wall of the inner filter cylinder (8). A threaded short rod (12) is fixedly installed at the top of the magnetic rod (11), and the threaded short rod (12) is threadedly connected to the screw hole (9).

4. A gear type pneumatic motor for a pneumatic hoist according to claim 3, characterized in that: The connecting ring (13) is fixedly installed on the bottom of the outer wall of the inner filter cylinder (8), and a set of symmetrical positioning protrusions (14) corresponding to the positioning port (6) are fixedly installed on the outer wall of the connecting ring (13).

5. A gear type pneumatic motor for a pneumatic hoist according to claim 4, characterized in that: The bottom surface of the connecting ring (13) is also provided with a set of symmetrical notches (15), and grooves (16) are provided on the left and right side walls inside the notches (15).

6. A gear type pneumatic motor for a pneumatic hoist according to claim 5, characterized in that: The guide rod (17) is fixedly installed in the groove (16), and the spring (18) is fitted on the outside of the guide rod (17). One end of the spring (18) is fixedly installed with one end wall of the groove (16). Connecting blocks (20) are fixedly installed on the left and right side walls of the movable block (19), and a guide hole (21) is opened on the front wall of the connecting block (20). The connecting block (20) is movably installed with the guide rod (17) through the guide hole (21), and the other end of the spring (18) is fixedly installed with the movable block (19). A latch (22) corresponding to the latch cavity (7) is fixedly installed on the outer side wall of the movable block (19), and the latch (22) is inserted into the latch cavity (7). A pressing block (23) is also fixedly installed on the bottom surface of the movable block (19).

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