A rotary drive bearing used in radar

Abstract

This utility model relates to the field of slewing bearing technology, specifically a slewing drive bearing used in radar. It includes an inner ring and an outer ring, as well as a main housing, a connecting block, a positioning mechanism, a positioning block, a push rod, and a secondary housing. Both the main housing and the secondary housing are mounted on the outer side of the outer ring. The connecting block is fixedly mounted at both ends of the main housing. The positioning mechanism is connected to the connecting block, and the positioning block is connected to the positioning mechanism. When the main housing and the secondary housing are connected, the positioning mechanism controls the positioning block to enter the connecting block. When the connecting block enters the secondary housing, the push rod is squeezed by the connecting block and, through the control of the connecting mechanism, presses against the connecting block. When the main housing and the secondary housing are connected, the connecting block is locked to achieve the connection between the main housing and the secondary housing. Simultaneously, the two push blocks move in opposite directions under pressure to press against the connecting block, further fixing the connecting block and improving the connection strength between the main housing and the secondary housing.

Description

Technical Field

[0001] This utility model relates to the field of slewing bearing technology, specifically a slewing drive bearing used in radar. Background Technology

[0002] Slewing bearings, also known as rotary bearings or rotating bearings, are a type of modern mechanical component. They consist of inner and outer rings, rolling elements, and are large bearings capable of withstanding combined loads, including significant axial and radial loads and overturning moments. Widely used in industry, slewing bearings are often referred to as "the joints of machines," serving as essential transmission components for machinery where relative rotational motion between two objects is required, while simultaneously bearing axial, radial, and overturning moments. With the rapid development of the machinery industry, slewing bearings have found widespread application in shipbuilding, construction machinery, light industrial machinery, metallurgical machinery, medical equipment, and industrial machinery.

[0003] During use, slewing bearings need to be sealed with a sealing cover to prevent dust from entering the bearing and increasing wear. The sealing structure on the market usually uses bolts for sealing. Although this sealing method has a good sealing effect, it is not convenient to disassemble and install, and has certain limitations.

[0004] To address the aforementioned problems, existing technologies provide a solution. For example, patent publication number CN220929940U provides a slewing bearing, which relates to the field of bearing technology. The bearing includes: an outer ring, a sealing groove on the upper end face of the outer ring, sliding holes symmetrically formed on the inner wall of the sealing groove, and a sealing assembly on the inner surface of the sealing groove; the sealing assembly includes a sealing strip. In this invention, the sealing cover, sealing strip, locking block, first spring, telescopic rod, mounting groove, sealing groove, and sliding hole work together to quickly install the sealing cover on the outer ring. The sealing cover effectively prevents external dust, particles, and other contaminants from entering the bearing, reducing friction and wear, and improving the bearing's lifespan and performance. The sealing cover can be quickly disassembled using the pressing block, second spring, fixing plate, sliding rod, and push block, facilitating maintenance and replacement and improving work efficiency. While existing devices also protect bearings by installing a housing on the outside of the bearing, they typically connect the housing using only a spring and a clip. Although this connection method is convenient, it lacks stability. During use, the bearing applies various forces to the spring, which can easily reduce the spring's elasticity, leading to loosening of the housing connection and reduced protection for the slewing bearing.

[0005] Therefore, a rotary drive bearing for radar applications is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a rotary drive bearing for use in radar, thereby solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A rotary drive bearing for use in radar includes an inner ring and an outer ring, and also includes a main housing, a connecting block, a positioning mechanism, a positioning block, a push rod, a connecting mechanism, and a secondary housing. The main housing and the secondary housing are both mounted on the outside of the outer ring. The connecting block is fixedly mounted on both ends of the main housing. The positioning mechanism is connected to the connecting block, and the positioning block is connected to the positioning mechanism. The push rod is connected to the connecting block, and the connecting mechanism is connected to the push rod. When the main housing and the secondary housing are connected, the positioning mechanism controls the positioning block to enter the connecting block. When the connecting block enters the secondary housing, the push rod is squeezed by the connecting block and is pressed against the connecting block by the connecting mechanism.

[0009] Preferably, the positioning mechanism includes a guide rod, a telescopic spring, a connecting rack, a spur gear, a drive rack, and a protrusion. The guide rod is slidably connected to the positioning block. The telescopic spring is fixedly installed between the positioning block and the secondary housing. The connecting rack is fixedly installed at one end of the positioning block. The spur gear meshes with the connecting rack. The drive rack meshes with the spur gear. The protrusion is fixedly installed at the top of the drive rack.

[0010] Preferably, the drive rack includes a toothed portion and a straight portion, the straight portion being disposed at the top of the toothed portion, and the length of the toothed portion being consistent with the length of the connecting rack.

[0011] Preferably, the secondary housing has a motion groove and a recessed groove respectively, the motion groove and the recessed groove are connected, the straight part cooperates with the motion groove, and the protrusion cooperates with the recessed groove.

[0012] Preferably, both ends of the secondary housing are provided with connecting grooves, the connecting block cooperates with the connecting grooves, and both ends of the connecting block are provided with positioning grooves, the positioning grooves cooperate with the positioning block.

[0013] Preferably, one end of the connecting block is arc-shaped, and one end of the positioning block is also arc-shaped, with the curvature of the connecting block being greater than that of the positioning block.

[0014] Preferably, the connecting mechanism includes a connecting rod, a slider, a sliding rod, and a return spring. The connecting rod is hinged to the top rod, the slider is hinged to one end of the connecting rod, the sliding rod is slidably connected to the slider, and the return spring is fixedly installed between the slider and the secondary housing.

[0015] Preferably, one end of the connecting block has a top groove, which cooperates with the top rod, and the depth of the top groove is the same as the width of the top rod.

[0016] Preferably, the secondary housing has a sliding groove inside, and the slider, sliding rod and return spring are all installed in the sliding groove.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] When the main housing and the secondary housing are connected, the control positioning block enters the positioning groove to lock the connecting block. When the connecting block is locked, the connection between the main housing and the secondary housing is realized, which can prevent the main housing and the secondary housing from separating. When the main housing and the secondary housing are connected, the two top blocks move in opposite directions under the action of pressure to tighten the connecting block, thereby further fixing the connecting block and improving the connection strength between the main housing and the secondary housing. Attached Figure Description

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

[0020] Figure 2 This is a top view cross-sectional three-dimensional structural diagram of the main shell and the secondary shell of this utility model;

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

[0022] Figure 4 This is a three-dimensional structural diagram of the positioning mechanism and the connecting mechanism of this utility model;

[0023] Figure 5 This utility model Figure 4 A magnified structural diagram of A in the middle;

[0024] Figure 6 This is a schematic diagram of the main structure of the secondary shell of this utility model.

[0025] In the diagram: 1. Inner ring; 2. Outer ring; 3. Main housing; 4. Connecting block; 5. Positioning mechanism; 51. Guide rod; 52. Telescopic spring; 53. Connecting rack; 54. Spur gear; 55. Drive rack; 551. Tooth section; 552. Straight section; 56. Protrusion; 57. Motion groove; 58. Insert groove; 59. Connecting groove; 510. Positioning groove; 6. Positioning block; 7. Top rod; 8. Connecting mechanism; 81. Connecting rod; 82. Slider; 83. Slide rod; 84. Return spring; 85. Top groove; 86. Slide groove; 9. Secondary housing. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. However, the embodiments described below are only some embodiments of the present utility model, and not all of them. If other embodiments are obtained by those skilled in the art without creative effort, they shall fall within the protection scope of the present utility model.

[0027] Reference Figures 1 to 6 A rotary drive bearing for radar applications includes an inner ring 1 and an outer ring 2, as well as a main housing 3, a connecting block 4, a positioning mechanism 5, a positioning block 6, a push rod 7, a connecting mechanism 8, and a secondary housing 9. The main housing 3 and the secondary housing 9 are both mounted on the outside of the outer ring 2. The connecting block 4 is fixedly mounted at both ends of the main housing 3. The positioning mechanism 5 is connected to the connecting block 4, and the positioning block 6 is connected to the positioning mechanism 5. One end of the connecting block 4 and one end of the positioning block 6 are arc-shaped. This configuration allows for contact between the connecting block 4 and the positioning block 6. To avoid excessive friction between the two, the connecting block 4 and the positioning block 6 are protected. The curvature of the connecting block 4 is greater than that of the positioning block 6. Through the above settings, a smooth transition between the connecting block 4 and the positioning block 6 is achieved. The top rod 7 is connected to the connecting block 4, and the connecting mechanism 8 is connected to the top rod 7. When the main housing 3 and the secondary housing 9 are connected, the positioning mechanism 5 controls the positioning block 6 to enter the connecting block 4. When the connecting block 4 enters the secondary housing 9, the top rod 7 is squeezed by the connecting block 4 and the connecting mechanism 8 controls the top rod 7 to press against the connecting block 4.

[0028] As one embodiment of this utility model, refer to Figures 3 to 6The positioning mechanism 5 includes a guide rod 51, a telescopic spring 52, a connecting rack 53, a spur gear 54, a drive rack 55, and a protrusion 56. The guide rod 51 is slidably connected to the positioning block 6. The telescopic spring 52 is fixedly installed between the positioning block 6 and the secondary housing 9. The connecting rack 53 is fixedly installed at one end of the positioning block 6. The spur gear 54 meshes with the connecting rack 53. The drive rack 55 meshes with the spur gear 54. The protrusion 56 is fixedly installed at the top of the drive rack 55. The drive rack 55 includes teeth. The gear 551 and the straight part 552 are located at the top of the gear 551. The length of the gear 551 is the same as the length of the connecting rack 53. This arrangement enables the connecting rack 53 and the driving rack 55 to move synchronously and travel the same distance. The driving rack 55 and the connecting rack 53 are symmetrical about the axis of the spur gear 54. Two sets of connecting blocks 4 are symmetrically arranged along the center line of the connecting blocks 4. This arrangement enables the main housing 3 to achieve The secondary housing 9 is fixed to both sides, thereby improving the connection strength. The secondary housing 9 has a motion groove 57 and a slot 58 inside, which are connected. The motion groove 57 provides movement space for the rack 55 when it is driven to rise and fall. The straight part 552 cooperates with the motion groove 57, and the protrusion 56 cooperates with the slot 58. The above arrangement can control the protrusion 56 to descend and completely overlap with the secondary housing 9 when the main housing 3 and the secondary housing 9 are separated. This avoids the protrusion of the protrusion 56 from hindering the separation of the main housing 3 and the secondary housing 9. Both ends of the secondary housing 9 are provided with connecting grooves 59, and the connecting block 4 cooperates with the connecting grooves 59. The above arrangement can connect the secondary housing 9 and the main housing 3, and at the same time, it can facilitate the connection block 4 to enter the connecting groove 59. Both ends of the connecting block 4 are provided with positioning grooves 510, which cooperate with positioning block 6. The above arrangement can provide space for the movement of positioning block 6.

[0029] As one embodiment of this utility model, refer to Figure 3 , Figure 5 and Figure 6The connecting mechanism 8 includes a connecting rod 81, a slider 82, a sliding rod 83, and a return spring 84. The connecting rod 81 is hinged to the top rod 7, the slider 82 is hinged to one end of the connecting rod 81, the sliding rod 83 is slidably connected to the slider 82, and the return spring 84 is fixedly installed between the slider 82 and the secondary housing 9. One end of the connecting block 4 has a top groove 85, which cooperates with the top rod 7. The above arrangement provides space for the movement of the top rod 7, facilitates the accommodation of the top rod 7, and facilitates the contact between the top rod 7 and the connecting block 4. The depth of the top groove 85 is the same as the width of the top rod 7. The above arrangement allows the top block to completely enter the top groove 85, while avoiding obstruction of the movement of the connecting block 4. The secondary housing 9 has a sliding groove 86 inside, in which the slider 82, the sliding rod 83, and the return spring 84 are all installed. The sliding groove 86 provides space for the movement of the slider 82 and the return spring 84.

[0030] Working principle: When using the device, if it is necessary to separate the main housing 3 and the secondary housing 9, the user can press down on the protrusion 56. Under the pressure, the two drive racks 55 in the same group will move towards each other. When the drive racks 55 move, they can drive the spur gear 54 to rotate. When the spur gear 54 rotates, it can drive the connecting rack 53 to move in the opposite direction to the drive rack 55. When the connecting rack 53 moves, it can drive the positioning block 6 to slide on the guide rod 51, and at the same time stretch the telescopic spring 52. When the positioning block 6 moves towards the connecting block 4, it will gradually enter the positioning groove 510 to lock the connecting block 4.

[0031] When the connecting block 4 enters the connecting groove 59, the push rod 7 will enter the top groove 85. As the connecting block 4 gradually goes deeper into the connecting groove 59, it will gradually apply pressure to the push rod 7 and gradually push the push rod 7. When the push rod 7 is pushed, it can push the slider 82 through the connecting rod 81, thereby controlling the slider 82 to slide on the sliding rod 83. At the same time, it stretches the return spring 84. The two push rods 7 will move in opposite directions in the top groove 85 and gradually tighten the connecting block 4 to achieve positioning and clamping of the connecting block 4.

[0032] Although the embodiments of this utility model have been described in detail with reference to the accompanying drawings, those skilled in the art can make changes, modifications, substitutions and variations to these embodiments without departing from the principles and spirit of this utility model. The appended claims and their equivalents define the scope of this utility model.

Claims

1. A slewing drive bearing for use in a radar comprising an inner ring (1) and an outer ring (2), characterized in that: It also includes a main housing (3), a connecting block (4), a positioning mechanism (5), a positioning block (6), a top rod (7), a connecting mechanism (8), and a secondary housing (9). The main housing (3) and the secondary housing (9) are both installed on the outside of the outer ring (2). The connecting block (4) is fixedly installed at both ends of the main housing (3). The positioning mechanism (5) is connected to the connecting block (4). The positioning block (6) is connected to the positioning mechanism (5). The top rod (7) is connected to the connecting block (4). The connecting mechanism (8) is connected to the top rod (7). When the main housing (3) and the secondary housing (9) are connected, the positioning mechanism (5) controls the positioning block (6) to enter the connecting block (4). When the connecting block (4) enters the secondary housing (9), the top rod (7) is squeezed by the connecting block (4) and the connecting mechanism (8) controls the top rod (7) to press against the connecting block (4).

2. A rotary drive bearing for application to a radar according to claim 1, characterized in that: The positioning mechanism (5) includes a guide rod (51), a telescopic spring (52), a connecting rack (53), a spur gear (54), a drive rack (55), and a protrusion (56). The guide rod (51) is slidably connected to the positioning block (6). The telescopic spring (52) is fixedly installed between the positioning block (6) and the secondary housing (9). The connecting rack (53) is fixedly installed at one end of the positioning block (6). The spur gear (54) meshes with the connecting rack (53). The drive rack (55) meshes with the spur gear (54). The protrusion (56) is fixedly installed at the top of the drive rack (55).

3. A rotary drive bearing for application to a radar according to claim 2, characterized in that: The drive rack (55) includes a toothed portion (551) and a straight portion (552). The straight portion (552) is disposed at the top of the toothed portion (551), and the length of the toothed portion (551) is the same as the length of the connecting rack (53).

4. A rotary drive bearing for application to a radar according to claim 3, characterized in that: The subshell (9) has a motion groove (57) and a recess (58) respectively. The motion groove (57) and the recess (58) are connected. The straight part (552) cooperates with the motion groove (57) and the protrusion (56) cooperates with the recess (58).

5. A rotary drive bearing for application to a radar according to claim 4, characterised in that: The secondary housing (9) is provided with connecting grooves (59) at both ends, and the connecting block (4) cooperates with the connecting grooves (59). The connecting block (4) is provided with positioning grooves (510) at both ends, and the positioning grooves (510) cooperate with the positioning block (6).

6. A rotary drive bearing for application to a radar according to claim 5, characterized in that: One end of the connecting block (4) is arc-shaped, and one end of the positioning block (6) is also arc-shaped. The curvature of the connecting block (4) is greater than that of the positioning block (6).

7. A rotary drive bearing for use in a radar according to claim 1, wherein: The connecting mechanism (8) includes a connecting rod (81), a slider (82), a sliding rod (83), and a return spring (84). The connecting rod (81) is hinged to the top rod (7), the slider (82) is hinged to one end of the connecting rod (81), the sliding rod (83) is slidably connected to the slider (82), and the return spring (84) is fixedly installed between the slider (82) and the secondary housing (9).

8. A rotary drive bearing for application to a radar according to claim 7, characterized in that: The connecting block (4) has a top groove (85) at one end, which cooperates with the top rod (7). The depth of the top groove (85) is the same as the width of the top rod (7).

9. A rotary drive bearing for application to a radar according to claim 8, characterised in that: The secondary shell (9) is internally provided with a sliding slot (86), and the sliding block (82), the sliding rod (83) and the reset spring (84) are all installed in the sliding slot (86).

Images