Combined sliding bearing with sealing and dustproof effects

Abstract

The utility model relates to the technical field of sliding bearings, and discloses a combined sliding bearing with sealing and dustproof effects, which comprises a base, a top cover and a main shaft, the top cover is arranged on the upper side of the base, a stepped groove which is through left and right is arranged between the base and the top cover, and a bearing bush is arranged on the surface of the stepped groove. The main shaft is rotatably connected to the inner arc surface of the bearing bush. The surface of the top cover is provided with a one-way sealing dustproof assembly corresponding to the stepped groove. In the rotating process of the main shaft, the transmission rod drives the shaft rod to rotate, the shaft rod rotates to drive the centrifugal impeller to rotate, under the rotating conveying effect of the centrifugal impeller, external air is filtered by the dustproof net and then enters the communicating cavity and the stepped groove, and the interior of the stepped groove can be kept in a micro-positive pressure state; part of the air flow can leak out along the gap between the bearing bush and the main shaft, so that external dust is prevented from entering the sliding bearing from the gap between the bearing bush and the main shaft, and the effect of unidirectional sealing and dust prevention on the sliding bearing is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to sliding bearing technical field more particularly to a combination formula sliding bearing with sealed dustproof effect. BACKGROUND

[0002] The sliding bearing is the bearing under the work of sliding friction. The sliding bearing has the advantages of stable work, reliable, noiseless, and in the process of using the sliding bearing, the dust of external environment is easy to drill into the inside of the sliding bearing from the structure processing gap of the sliding bearing, which affects the normal use of the sliding bearing.

[0003] Through the search, the existing patent (announcement number: CN217926786U) discloses a combination formula sliding bearing with sealed dustproof effect, which forms a protective layer by setting the upper sealing sleeve and the lower sealing sleeve outside the connecting shaft in the process of using, when there is dust and corrosive substance, only the upper sealing sleeve and the lower sealing sleeve are attached, and the length of the upper sealing sleeve and the lower sealing sleeve can be adjusted according to the length of the connecting shaft, the sealing component group enhances the dustproof effect of the sliding bearing, avoids the material corrosion caused by long-term maintenance, thereby achieving the problems of saving cost and reducing labor maintenance consumption. However, the inventor found that the existing technology has the following problems in the process of realizing the utility model: the combination formula sliding bearing adopts the mode of the upper sealing sleeve and the lower sealing sleeve to strengthen the sealing of the sliding bearing, which improves the sealing effect to a certain extent, but it is still difficult to solve the defect of the structure processing gap, and the external dust can still enter the inside of the sliding bearing from the processing gap position of the inner arc surface of the upper sealing sleeve and the lower sealing sleeve, which still has the defect that the dustproof effect cannot reach the expectation, and in the process of using the sliding bearing, a large amount of heat is accumulated in the inside due to friction, which can cause the deformation of the structure component and affect the normal use of the sliding bearing.

[0004] Therefore, the utility model provides a combination formula sliding bearing with sealed dustproof effect to solve the problem. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a combination formula sliding bearing with sealed dustproof effect to solve the problems in the background art.

[0006] The utility model provides the following technical scheme: a combination formula sliding bearing with sealed dustproof effect, including base, top cap and main shaft, the top cap sets up in the upside of base, and the left and right through stepped groove is set up between base and top cap, and the surface of stepped groove is provided with bearing bush, and the main shaft is rotatably connected to the inner arc surface of bearing bush, and the surface of top cap is provided with one-way sealing dustproof assembly corresponding to stepped groove;

[0007] The one-way sealing dustproof assembly includes a hood embedded in the surface of the top cover. An air inlet is reserved on the left side of the hood, and a dustproof net is fixedly installed on the inner wall of the air inlet. A communicating cavity for connecting the inner cavity of the ventilation hood and the stepped groove is opened on the surface of the top cover. A shaft is rotatably connected to the inner wall of the hood, and a centrifugal impeller is fixedly installed at the end of the shaft. A transmission rod is rotatably connected to the inner wall of the top cover, and the two ends of the transmission rod are respectively connected to the shaft and the main shaft through bevel gears.

[0008] Furthermore, the top cover is detachably mounted on the upper side of the base, and the surface of the top cover is provided with a first mounting bolt for locking with the base.

[0009] Furthermore, the surface of the spindle is provided with a positioning protrusion, and the inner wall of the bearing bush is provided with a positioning ring groove, and the positioning protrusion and the positioning ring groove are adapted to each other; by providing the positioning protrusion and the positioning ring groove, the spindle can be positioned to avoid axial sliding of the spindle.

[0010] Furthermore, the bearing bush includes an upper bearing plate and a lower bearing plate, which are adapted to form a cylindrical structure. The surfaces of both the upper and lower bearing plates are provided with semi-circular protrusions and semi-circular positioning plates. The semi-circular protrusions and semi-circular positioning plates are respectively engaged on the inner and outer sides of the stepped groove, and the surface of the semi-circular positioning plate is provided with a second mounting bolt for locking with the base and the top cover. The bearing bush is divided into an upper bearing plate and a lower bearing plate to facilitate the installation of the bearing bush. The semi-circular protrusions and semi-circular positioning plates facilitate the positioning of the bearing bush with the base and the top cover. The second mounting bolts enable the bearing bush to be tightened during installation.

[0011] Furthermore, anti-rotation blocks are fixedly installed on the surfaces of the upper and lower roof tiles, and slots are opened on the surfaces of the base and the top cover, with the anti-rotation blocks being engaged inside the slots. By setting anti-rotation blocks and engaging them inside the slots, the situation where the bearing rotates with the main shaft can be prevented.

[0012] Furthermore, a locking ring is fitted onto the surface of the bearing bush, and a third mounting bolt for locking the locking ring to the bearing bush is provided on the surface of the locking ring; by providing a locking ring, fitting it onto the end of the bearing bush, and locking it with the third mounting bolt, the structural strength and stability of the bearing bush can be enhanced.

[0013] Furthermore, the air inlet end of the centrifugal impeller corresponds to the position of the air inlet, and the air outlet end of the centrifugal impeller corresponds to the position of the connecting cavity.

[0014] Furthermore, an extension rod is fixedly installed at the center of the centrifugal impeller. The extension rod is rotatably connected to the dustproof net, and the left end of the extension rod extends to the left side of the dustproof net and is fixedly installed with a brush plate. By setting the extension rod and the brush plate, the centrifugal impeller rotates to drive the extension rod to rotate, which in turn drives the brush plate to rotate, thus cleaning the dust on the left side of the dustproof net and ensuring the permeability of the dustproof net mesh.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. In this utility model, when using the sliding bearing, the bearing bush is fitted inside the stepped groove between the base and the top cover. The main shaft rotates on the inner arc surface of the bearing bush. By setting a one-way sealing dustproof component, during the rotation of the main shaft, the transmission rod drives the shaft to rotate, and the rotation of the shaft drives the centrifugal impeller to rotate. Under the rotational conveying action of the centrifugal impeller, external air enters the connecting cavity and the stepped groove after being filtered by the dustproof net. This maintains a slightly positive pressure inside the stepped groove, and some airflow can leak out along the gap between the bearing bush and the main shaft, thereby preventing external dust from entering the interior of the sliding bearing from the gap between the bearing bush and the main shaft. This achieves the effect of one-way sealing dustproof for the sliding bearing, and the airflow also promotes heat exchange inside the sliding bearing, ensuring the normal use of the sliding bearing.

[0017] 2. This utility model, by setting a first mounting bolt, can securely install the top cover and the base; by setting a positioning protrusion and a positioning ring groove, it can position the main shaft and prevent axial sliding of the main shaft; by dividing the bearing bush into an upper bearing plate and a lower bearing plate, it is convenient to install the bearing bush; by setting a semi-circular protrusion and a semi-circular positioning plate, it is convenient to position the bearing bush with the base and the top cover; by setting a second mounting bolt, it can tighten the bearing bush; by setting an anti-rotation block, the anti-rotation block can be locked into the slot to prevent the bearing bush from rotating with the main shaft; by setting a locking ring, the locking ring is sleeved on the end of the bearing bush and locked by a third mounting bolt, which can enhance the structural strength and stability of the bearing bush.

[0018] 3. This utility model, by setting an extension rod and a brush plate, uses the rotation of a centrifugal impeller to drive the extension rod to rotate, which in turn drives the brush plate to rotate, thus cleaning the dust on the left side of the dustproof net and ensuring the permeability of the dustproof net mesh. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side sectional view of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the main shaft of this utility model;

[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0023] The attached diagram is labeled as follows: 1. Base; 2. Top cover; 3. Main shaft; 4. Stepped groove; 5. Bearing shell; 501. Upper bearing plate; 502. Lower bearing plate; 503. Semi-circular protrusion; 504. Semi-circular positioning plate; 505. Second mounting bolt; 506. Anti-rotation block; 6. Wind hood; 7. Air inlet; 8. Dustproof net; 9. Connecting cavity; 10. Shaft; 11. Centrifugal impeller; 12. Transmission rod; 13. First mounting bolt; 14. Positioning protrusion; 15. Positioning ring groove; 16. Slot; 17. Locking ring; 18. Third mounting bolt; 19. Extension rod; 20. Brush plate. Detailed Implementation

[0024] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The combined sliding bearing with sealing and dustproof effect involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Reference Figures 1 to 4 This utility model provides a combined sliding bearing with sealing and dustproof effect, including a base 1, a top cover 2 and a main shaft 3. The top cover 2 is located on the upper side of the base 1. A stepped groove 4 that runs through the left and right sides is opened between the base 1 and the top cover 2. A bearing shell 5 is provided on the surface of the stepped groove 4. The main shaft 3 is rotatably connected to the inner arc surface of the bearing shell 5.

[0026] When using this sliding bearing, the base 1 is installed with the external structure, and the bearing bush 5 is locked inside the stepped groove 4 between the base 1 and the top cover 2, so that the main shaft 3 can rotate on the inner arc surface of the bearing bush 5.

[0027] The top cover 2 is detachably mounted on the upper side of the base 1, and the surface of the top cover 2 is provided with a first mounting bolt 13 for locking with the base 1.

[0028] By setting the first mounting bolt 13, the top cover 2 and the base 1 can be fastened together.

[0029] The main shaft 3 has a positioning protrusion ring 14 on its surface and a positioning ring groove 15 on the inner wall of the bearing bush 5. The positioning protrusion ring 14 and the positioning ring groove 15 are adapted to each other.

[0030] Furthermore, by setting the positioning protrusion 14 and the positioning ring groove 15, the spindle 3 can be positioned to prevent axial sliding of the spindle 3.

[0031] The bearing 5 includes an upper bearing plate 501 and a lower bearing plate 502. The upper bearing plate 501 and the lower bearing plate 502 are adapted to form a cylindrical structure. The surfaces of the upper bearing plate 501 and the lower bearing plate 502 are provided with a semi-circular protrusion 503 and a semi-circular positioning plate 504. The semi-circular protrusion 503 and the semi-circular positioning plate 504 are respectively engaged on the inner and outer sides of the stepped groove 4. The surface of the semi-circular positioning plate 504 is provided with a second mounting bolt 505 for locking with the base 1 and the top cover 2.

[0032] It is worth noting that the bearing shell 5 is divided into an upper bearing plate 501 and a lower bearing plate 502, which facilitates the installation of the bearing shell 5. By setting a semi-circular protrusion 503 and a semi-circular positioning plate 504, it is convenient to position the bearing shell 5 between itself and the base 1 and the top cover 2. After positioning, the bearing shell 5 can be installed and tightened using the second mounting bolt 505.

[0033] Anti-rotation blocks 506 are fixedly installed on the surfaces of the upper tile 501 and the lower tile 502. The base 1 and the top cover 2 are provided with slots 16, and the anti-rotation blocks 506 are locked inside the slots 16.

[0034] Furthermore, by setting an anti-rotation block 506, which is inserted into the slot 16, the bearing 5 can be prevented from rotating with the main shaft 3.

[0035] A locking ring 17 is fitted on the surface of the bearing bush 5, and a third mounting bolt 18 for locking with the bearing bush 5 is provided on the surface of the locking ring 17.

[0036] Furthermore, by setting a locking ring 17, which is sleeved on the end of the bearing bush 5 and locked using the third mounting bolt 18, the structural strength and stability of the bearing bush 5 can be enhanced.

[0037] The surface of the top cover 2 is provided with a one-way sealing dustproof component corresponding to the stepped groove 4.

[0038] The one-way sealed dustproof assembly includes a hood 6 embedded in the surface of the top cover 2. An air inlet 7 is reserved on the left side of the hood 6. A dustproof net 8 is fixedly installed on the inner wall of the air inlet 7. A communicating cavity 9 is opened on the surface of the top cover 2 to connect the inner cavity of the hood 6 and the stepped groove 4. A shaft 10 is rotatably connected to the inner wall of the hood 6. A centrifugal impeller 11 is fixedly installed at the end of the shaft 10. A transmission rod 12 is rotatably connected to the inner wall of the top cover 2. The two ends of the transmission rod 12 are respectively connected to the shaft 10 and the main shaft 3 through bevel gears.

[0039] The air inlet end of the centrifugal impeller 11 corresponds to the position of the air inlet 7, and the air outlet end of the centrifugal impeller 11 corresponds to the position of the connecting cavity 9.

[0040] It is worth noting that when using this sliding bearing, by setting a one-way sealing dustproof component, the main shaft 3 is driven to rotate by external power. During the rotation of the main shaft 3, the shaft rod 10 is driven to rotate by the transmission rod 12. The rotation of the shaft rod 10 drives the centrifugal impeller 11 to rotate. Under the rotational conveying action of the centrifugal impeller 11, the external air enters the connecting cavity 9 and the stepped groove 4 after being filtered by the dustproof net 8. This can maintain a slightly positive pressure inside the stepped groove 4, and some airflow can be discharged along the gap between the bearing shell 5 and the main shaft 3, thereby preventing external dust from entering the interior of the sliding bearing from the gap between the bearing shell 5 and the main shaft 3, thus achieving the effect of one-way sealing dustproof for the sliding bearing.

[0041] Furthermore, the airflow within the stepped groove 4 promotes heat exchange within the sliding bearing, preventing overheating and ensuring its normal operation.

[0042] An extension rod 19 is fixedly installed at the center of the centrifugal impeller 11. The extension rod 19 is rotatably connected to the dustproof net 8, and the left end of the extension rod 19 extends to the left side of the dustproof net 8 and is fixedly installed with a brush plate 20.

[0043] Furthermore, by setting up an extension rod 19 and a brush plate 20, the centrifugal impeller 11 rotates to drive the extension rod 19 to rotate, which in turn drives the brush plate 20 to rotate, thus cleaning the dust on the left side of the dustproof net 8 and ensuring the permeability of the mesh of the dustproof net 8.

[0044] Finally, it should be noted that the accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A combined sliding bearing with sealing and dustproof effect, comprising a base (1), a top cover (2), and a main shaft (3), characterized in that: The top cover (2) is set on the upper side of the base (1). A stepped groove (4) is opened between the base (1) and the top cover (2) and the left and right through. A bearing (5) is provided on the surface of the stepped groove (4). The main shaft (3) is rotatably connected to the inner arc surface of the bearing (5). A one-way sealing dustproof component is provided on the surface of the top cover (2) corresponding to the stepped groove (4). The one-way sealing dustproof assembly includes a hood (6) embedded in the surface of the top cover (2). An air inlet (7) is reserved on the left side of the hood (6). A dustproof net (8) is fixedly installed on the inner wall of the air inlet (7). A connecting cavity (9) for connecting the inner cavity of the hood (6) and the stepped groove (4) is opened on the surface of the top cover (2). A shaft (10) is rotatably connected to the inner wall of the hood (6). A centrifugal impeller (11) is fixedly installed at the end of the shaft (10). A transmission rod (12) is rotatably connected to the inner wall of the top cover (2). The two ends of the transmission rod (12) are respectively connected to the shaft (10) and the main shaft (3) through bevel gears.

2. The combined sliding bearing with sealing and dustproof effect according to claim 1, characterized in that: The top cover (2) is detachably mounted on the upper side of the base (1), and the surface of the top cover (2) is provided with a first mounting bolt (13) for locking with the base (1).

3. A combined sliding bearing with sealing and dustproof effect according to claim 1, characterized in that: The main shaft (3) is provided with a positioning protrusion (14) on its surface, and the inner wall of the bearing (5) is provided with a positioning ring groove (15), and the positioning protrusion (14) and the positioning ring groove (15) are adapted to each other.

4. A combined sliding bearing with sealing and dustproof effect according to claim 1, characterized in that: The bearing bush (5) includes an upper bearing plate (501) and a lower bearing plate (502). The upper bearing plate (501) and the lower bearing plate (502) are adapted to form a cylindrical structure. The surfaces of the upper bearing plate (501) and the lower bearing plate (502) are provided with a semi-circular protrusion (503) and a semi-circular positioning plate (504). The semi-circular protrusion (503) and the semi-circular positioning plate (504) are respectively locked on the inner and outer sides of the stepped groove (4). The surface of the semi-circular positioning plate (504) is provided with a second mounting bolt (505) for locking with the base (1) and the top cover (2).

5. A combined sliding bearing with sealing and dustproof effect according to claim 1 or 4, characterized in that: The surfaces of the upper tile (501) and the lower tile (502) are fixedly equipped with anti-rotation blocks (506), and the surfaces of the base (1) and the top cover (2) are provided with slots (16), with the anti-rotation blocks (506) being locked inside the slots (16).

6. A combined sliding bearing with sealing and dustproof effect according to claim 4, characterized in that: The surface of the bearing bush (5) is fitted with a locking ring (17), and the surface of the locking ring (17) is provided with a third mounting bolt (18) for locking with the bearing bush (5).

7. A combined sliding bearing with sealing and dustproof effect according to claim 1, characterized in that: The air inlet of the centrifugal impeller (11) corresponds to the position of the air inlet (7), and the air outlet of the centrifugal impeller (11) corresponds to the position of the connecting cavity (9).

8. A combined sliding bearing with sealing and dustproof effect according to claim 1, characterized in that: An extension rod (19) is fixedly installed at the center of the centrifugal impeller (11). The extension rod (19) is rotatably connected to the dustproof net (8), and the left end of the extension rod (19) extends to the left side of the dustproof net (8) and is fixedly installed with a brush plate (20).

Images