Compressor bushing pre-tightening device capable of finely adjusting gap

Abstract

The utility model belongs to the technical field of bushing pre-tightening, and particularly relates to a compressor bushing pre-tightening device capable of finely adjusting a gap, which comprises an outer ring body, an extrusion ring and a bushing body, the bushing body is arranged on the outer side of a compressor shaft body, a notch is arranged on one side of the bushing body, the extrusion ring is sleeved on the outer side of the bushing body, and the notch is arranged on the other side of the bushing body. The inner wall of the extrusion ring and the outer wall of the lining body are obliquely arranged, the inclination angle of the inner wall of the notch is the same as that of the outer wall of the lining body, the extrusion ring can slide in the outer ring body along the axis of the outer ring body, and an electromagnetic adjusting set in transmission connection with the extrusion ring is installed on the outer ring body. And the electromagnetic adjusting group is used for applying electromagnetic force to the extrusion ring to drive the extrusion ring to slide in the outer ring body. According to the utility model, stepless fine adjustment can be carried out on the gap between the bushing body and the compressor shaft body in the process of pre-tightening the compressor bushing, the adjustment precision is high, and real-time adjustment can be carried out in the use process.

Description

A compressor bushing preload device with adjustable clearance Technical Field

[0001] This utility model belongs to the field of bushing pre-tightening technology, specifically relating to a compressor bushing pre-tightening device with adjustable clearance. Background Technology

[0002] In the field of compressor technology, the bushing, as a core component for shaft support and sealing, directly determines the equipment's operating efficiency, stability, and lifespan by controlling the clearance between it and the compressor shaft. Traditional compressor bushing pre-tightening devices mostly employ mechanical adjustment structures (such as threaded tightening, shim addition / reduction, or hydraulic drive) to adjust the clearance by changing the relative position of the bushing and the shaft. However, such solutions have low adjustment precision, rely on manual operation, and are typically limited to millimeter-level accuracy, making it difficult to meet the stringent requirements of high-speed, high-precision compressors for micrometer-level clearances. Summary of the Invention

[0003] The purpose of this invention is to provide a compressor bushing pre-tightening device with adjustable clearance, which can infinitely adjust the clearance between the bushing body and the compressor shaft during the pre-tightening process of the compressor bushing, with high adjustment accuracy, and can be adjusted in real time during use.

[0004] The specific technical solution adopted by this utility model is as follows:

[0005] An adjustable clearance compressor bushing pre-tightening device includes an outer ring body, a compression ring, and a bushing body. The bushing body is installed on the outside of the compressor shaft. A slot is formed on one side of the bushing body. The compression ring is sleeved on the outside of the bushing body. The inner wall of the compression ring and the outer wall of the bushing body are both inclined. The inner wall of the slot and the outer wall of the bushing body have the same inclination angle. The compression ring can slide inside the outer ring body along the axis of the outer ring body. An electromagnetic adjustment group is installed on the outer ring body and is drivenly connected to the compression ring. The electromagnetic adjustment group is used to apply electromagnetic force to the compression ring to drive the compression ring to slide inside the outer ring body, so as to adjust the position of the compression ring inside the outer ring body.

[0006] Furthermore, the electromagnetic adjustment assembly includes a first electromagnet and a magnet, the first electromagnet being fixedly connected to the extrusion ring, the magnet being fixedly connected to the extrusion ring, and the first electromagnet and the magnet being magnetically repulsive to each other.

[0007] Furthermore, the outer ring body has an internal mounting cavity, the magnet is fixedly connected inside the mounting cavity, and a sliding ring is slidably connected inside the mounting cavity. The sliding ring is fixedly connected to the compression ring through a connector, and the first electromagnet is fixedly connected to the sliding ring.

[0008] Furthermore, a tension spring is fixedly connected between the first electromagnet and the magnet.

[0009] Furthermore, an electrically controlled telescopic assembly is installed inside the sliding ring, and a locking rod that can extend outward from the outside of the sliding ring is fixedly connected to the electrically controlled telescopic assembly.

[0010] Furthermore, a sliding cavity is provided inside the sliding ring, and the electrically controlled telescopic assembly includes a second electromagnet fixedly connected inside the sliding cavity and a top plate slidably connected inside the sliding cavity. The locking rod is fixedly connected to the top plate, and a return spring is fixedly connected between the second electromagnet and the top plate. When the second electromagnet is energized, it magnetically attracts the top plate.

[0011] Furthermore, the inner wall of the mounting cavity is provided with a plurality of locking holes, and the locking rod can extend into the interior of any one of the locking holes.

[0012] The technical effects achieved by this utility model are as follows:

[0013] This utility model discloses a compressor bushing pre-tightening device with adjustable gap. The device applies electromagnetic force to the extrusion ring through an electromagnetic adjustment group, causing the extrusion ring to slide inside the outer ring body. This adjusts the position of the extrusion ring inside the outer ring body, thereby achieving precise and stepless adjustment of the extrusion ring position. The device allows for stepless fine adjustment of the gap between the bushing body and the compressor shaft, with high adjustment accuracy and real-time adjustment during use. Attached Figure Description

[0014] Figure 1 is a structural schematic diagram of this utility model;

[0015] Figure 2 is a cross-sectional structural diagram of this utility model;

[0016] Figure 3 is a side view of the cross-sectional structure of this utility model;

[0017] Figure 4 is a partial enlarged view of point A in Figure 3 of this utility model.

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

[0019] 1. Compressor shaft; 2. Bushing body; 3. Groove; 4. Extrusion ring; 5. Outer ring; 6. Connector; 7. Sliding ring; 8. First electromagnet; 9. Magnet; 10. Mounting cavity; 11. Locking hole; 12. Locking rod; 13. Second electromagnet; 14. Top plate; 15. Return spring; 16. Tension spring; 17. Sliding cavity. Detailed Implementation

[0020] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0021] As shown in Figures 1-4, a compressor bushing pre-tightening device with adjustable clearance includes an outer ring body 5, a compression ring 4, and a bushing body 2. It should be noted that a structure for limiting the bushing body 2 needs to be provided on the outer side of the compressor shaft 1. The outer ring body 5 is fixedly connected to the compressor and is used to limit the outer ring body 5.

[0022] The bushing 2 can be installed on the outside of the compressor shaft 1. A groove 3 is provided on one side of the bushing 2. The bushing 2 can be deformed by the groove 3, thereby adjusting the gap between the bushing 2 and the compressor shaft 1.

[0023] The extrusion ring 4 is sleeved on the outside of the bushing body 2, and the inner wall of the extrusion ring 4 and the outer wall of the bushing body 2 are both inclined. The inner wall of the slot 3 and the outer wall of the bushing body 2 have the same inclination angle. At this time, by sliding the extrusion ring 4 on the outside of the bushing body 2, the extrusion force of the extrusion ring 4 on the bushing body 2 can be adjusted, and the gap between the bushing body 2 and the compressor shaft 1 can be adjusted.

[0024] The extrusion ring 4 is movably installed inside the outer ring body 5 and can slide along the axis of the outer ring body 5 inside the outer ring body 5. An electromagnetic adjustment group is installed on the outer ring body 5 and is connected to the extrusion ring 4 in a transmission manner. The electromagnetic adjustment group is used to apply electromagnetic force to the extrusion ring 4 to drive the extrusion ring 4 to slide inside the outer ring body 5, so as to adjust the position of the extrusion ring 4 inside the outer ring body 5, thereby achieving the purpose of precisely adjusting the position of the extrusion ring 4 and fine-tuning the gap between the bushing body 2 and the compressor shaft body 1.

[0025] The electromagnetic adjustment group can be a coil fixedly connected inside the bushing body 2. In this case, a magnet is fixedly connected to the extrusion ring 4, so that the extrusion ring 4 can be driven by the coil.

[0026] The electromagnetic adjustment group can also be as shown in Figures 1-3, that is, the electromagnetic adjustment group includes a first electromagnet 8 and a magnet 9. The first electromagnet 8 is fixedly connected to the extrusion ring 4, and the magnet 9 is fixedly connected to the extrusion ring 4. At this time, the first electromagnet 8 and the magnet 9 are magnetically connected, and their magnetic connection relationship can be magnetic attraction or magnetic repulsion. In this technical solution, magnetic repulsion is preferred. By activating the first electromagnet 8, the magnet 9 can be pushed upward. By adjusting the magnetic force applied by the first electromagnet 8, the distance the extrusion ring 4 moves can be controlled.

[0027] Meanwhile, this technical solution provides an installation cavity 10 inside the outer ring body 5. The magnet 9 is fixedly connected inside the installation cavity 10. A sliding ring 7 is slidably connected inside the installation cavity 10. The sliding ring 7 is fixedly connected to the connecting piece 6 and the compression ring 4 so that they can slide synchronously. The first electromagnet 8 is fixedly connected to the sliding ring 7. At this time, by setting the first electromagnet 8 and the magnet 9 inside the installation cavity 10, the contact between the first electromagnet 8 and the magnet 9 and the slot 3 can be reduced.

[0028] In order to control the increase of the gap between the compressor shaft 1 and the bushing 2, a tension spring 16 can be fixedly connected between the first electromagnet 8 and the magnet 9. By setting the tension spring 16, the compression ring 4 can be driven to move downward, reducing the compression force applied by the compression ring 4 to the bushing 2 and increasing the gap between the compressor shaft 1 and the bushing 2.

[0029] As shown in Figures 2-4, an electrically controlled telescopic assembly is installed inside the sliding ring 7. A locking rod 12 that can extend outward from the sliding ring 7 is fixedly connected to the electrically controlled telescopic assembly. When the position of the compression ring 4 is adjusted, the locking rod 12 is extended by the electrically controlled telescopic assembly, so that the locking rod 12 abuts against the inner wall of the mounting cavity 10, thereby locking the position of the compression ring 4. After the compression ring 4 is locked, the first electromagnet 8 can be turned off, reducing power consumption.

[0030] As shown in Figures 3 and 4, the sliding ring 7 has a sliding cavity 17 inside. The electrically controlled telescopic assembly includes a second electromagnet 13 fixedly connected inside the sliding cavity 17 and a top plate 14 slidably connected inside the sliding cavity 17. The locking rod 12 is fixedly connected to the top plate 14. A return spring 15 is fixedly connected between the second electromagnet 13 and the top plate 14. When the second electromagnet 13 is energized, it magnetically attracts the top plate 14. At this time, by activating the second electromagnet 13, the top plate 14 can be pulled, controlling the locking rod 12 to retract into the sliding cavity 17. When the second electromagnet 13 is closed, the locking rod 12 can be pushed out under the pushing force of the return spring 15.

[0031] Meanwhile, a number of locking holes 11 can be opened on the inner wall of the mounting cavity 10, and the locking rod 12 can be inserted into the interior of any one of the locking holes 11 to improve locking stability.

[0032] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A compressor bushing preloading device with adjustable clearance, characterized by: The compressor includes an outer ring body (5), an extrusion ring (4), and a bushing body (2). The bushing body (2) is installed on the outside of the compressor shaft (1). A slot (3) is provided on one side of the bushing body (2). The extrusion ring (4) is sleeved on the outside of the bushing body (2). The inner wall of the extrusion ring (4) and the outer wall of the bushing body (2) are both inclined. The inner wall of the slot (3) and the outer wall of the bushing body (2) have the same inclination angle. The extrusion ring (4) can slide inside the outer ring body (5) along the axis of the outer ring body (5). An electromagnetic adjustment group is installed on the outer ring body (5) and is connected to the extrusion ring (4) in a transmission manner. The electromagnetic adjustment group is used to apply electromagnetic force to the extrusion ring (4) to drive the extrusion ring (4) to slide inside the outer ring body (5) in order to adjust the position of the extrusion ring (4) inside the outer ring body (5).

2. The compressor bushing pre-tightening device with adjustable clearance according to claim 1, characterized in that: The electromagnetic adjustment group includes a first electromagnet (8) and a magnet (9). The first electromagnet (8) is fixedly connected to the extrusion ring (4), and the magnet (9) is fixedly connected to the extrusion ring (4). The first electromagnet (8) and the magnet (9) are magnetically repulsive.

3. A compressor bushing pre-load device with an adjustable gap according to claim 2, characterized in that: The outer ring body (5) has an installation cavity (10) inside. The magnet (9) is fixedly connected inside the installation cavity (10). A sliding ring (7) is slidably connected inside the installation cavity (10). The sliding ring (7) is fixedly connected to the compression ring (4) through a connector (6). The first electromagnet (8) is fixedly connected to the sliding ring (7).

4. The compressor bushing pre-tightening device with adjustable clearance according to claim 3, characterized in that: A tension spring (16) is fixedly connected between the first electromagnet (8) and the magnet (9).

5. The compressor bushing pre-tightening device with adjustable clearance according to claim 3, characterized in that: An electrically controlled telescopic assembly is installed inside the sliding ring (7), and a locking rod (12) that can extend out of the sliding ring (7) is fixedly connected to the electrically controlled telescopic assembly.

6. The compressor bushing pre-tightening device with adjustable clearance according to claim 5, characterized in that: The sliding ring (7) has a sliding cavity (17) inside. The electrically controlled telescopic assembly includes a second electromagnet (13) fixedly connected inside the sliding cavity (17) and a top plate (14) slidably connected inside the sliding cavity (17). The locking rod (12) is fixedly connected to the top plate (14). A return spring (15) is fixedly connected between the second electromagnet (13) and the top plate (14). When the second electromagnet (13) is energized, it magnetically attracts the top plate (14).

7. The compressor bushing pre-tightening device with adjustable clearance according to claim 6, characterized in that: The inner wall of the mounting cavity (10) is provided with a plurality of locking holes (11), and the locking rod (12) can extend into the interior of any one of the locking holes (11).

Images